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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
Jan Engelhardt96de0e22007-10-19 23:21:04 +02009 * Jens Låås <jens.laas@data.slu.se>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090018 * The tool is implemented as a linux module. Parameters are output
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090047 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 * as a "fastpath" with a configurable number of clones after alloc's.
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090050 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 * clones.
53 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090054 * Also moved to /proc/net/pktgen/
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090063 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090068 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +020072 * way.
73 * The if_list is RCU protected, and the if_lock remains to protect updating
74 * of if_list, from "add_device" as it invoked from userspace (via proc write).
Linus Torvalds1da177e2005-04-16 15:20:36 -070075 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090076 * By design there should only be *one* "controlling" process. In practice
77 * multiple write accesses gives unpredictable result. Understood by "write"
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 * to /proc gives result code thats should be read be the "writer".
Stephen Hemmingerb4099fa2005-10-14 15:32:22 -070079 * For practical use this should be no problem.
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090081 * Note when adding devices to a specific CPU there good idea to also assign
82 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 * --ro
84 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090085 * Fix refcount off by one if first packet fails, potential null deref,
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 * memleak 030710- KJP
87 *
88 * First "ranges" functionality for ipv6 030726 --ro
89 *
90 * Included flow support. 030802 ANK.
91 *
92 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090093 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
95 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
96 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090097 * New xmit() return, do_div and misc clean up by Stephen Hemminger
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 * <shemminger@osdl.org> 040923
99 *
Stephen Hemmingerca9f1fd2015-02-14 13:47:54 -0500100 * Randy Dunlap fixed u64 printk compiler warning
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 *
102 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
103 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
104 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900105 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
107 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900108 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 * 050103
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800110 *
111 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
112 *
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700113 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
114 *
Adit Ranadivece5d0b42007-09-16 14:52:15 -0700115 * Fixed src_mac command to set source mac of packet to value specified in
116 * command by Adit Ranadive <adit.262@gmail.com>
117 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 */
Joe Perchesf9467ea2010-06-21 12:29:14 +0000119
120#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
121
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122#include <linux/sys.h>
123#include <linux/types.h>
124#include <linux/module.h>
125#include <linux/moduleparam.h>
126#include <linux/kernel.h>
Luiz Capitulino222fa072006-03-20 22:24:27 -0800127#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128#include <linux/sched.h>
129#include <linux/slab.h>
130#include <linux/vmalloc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#include <linux/unistd.h>
132#include <linux/string.h>
133#include <linux/ptrace.h>
134#include <linux/errno.h>
135#include <linux/ioport.h>
136#include <linux/interrupt.h>
Randy Dunlap4fc268d2006-01-11 12:17:47 -0800137#include <linux/capability.h>
Stephen Hemminger2bc481c2009-08-28 23:41:29 -0700138#include <linux/hrtimer.h>
Andrew Morton09fe3ef2007-04-12 14:45:32 -0700139#include <linux/freezer.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140#include <linux/delay.h>
141#include <linux/timer.h>
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800142#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143#include <linux/init.h>
144#include <linux/skbuff.h>
145#include <linux/netdevice.h>
146#include <linux/inet.h>
147#include <linux/inetdevice.h>
148#include <linux/rtnetlink.h>
149#include <linux/if_arp.h>
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700150#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151#include <linux/in.h>
152#include <linux/ip.h>
153#include <linux/ipv6.h>
154#include <linux/udp.h>
155#include <linux/proc_fs.h>
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700156#include <linux/seq_file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157#include <linux/wait.h>
Kris Katterjohnf404e9a2006-01-17 13:04:57 -0800158#include <linux/etherdevice.h>
David S. Milleree74baa2007-01-01 20:51:53 -0800159#include <linux/kthread.h>
Linus Torvalds268bb0c2011-05-20 12:50:29 -0700160#include <linux/prefetch.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200161#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162#include <net/checksum.h>
163#include <net/ipv6.h>
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200164#include <net/udp.h>
Stephen Rothwell73d94e92013-07-29 16:21:26 +1000165#include <net/ip6_checksum.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166#include <net/addrconf.h>
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700167#ifdef CONFIG_XFRM
168#include <net/xfrm.h>
169#endif
Cong Wang4e58a022013-01-28 19:55:53 +0000170#include <net/netns/generic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171#include <asm/byteorder.h>
172#include <linux/rcupdate.h>
Jiri Slaby1977f032007-10-18 23:40:25 -0700173#include <linux/bitops.h>
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000174#include <linux/io.h>
175#include <linux/timex.h>
176#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177#include <asm/dma.h>
Luiz Capitulino222f1802006-03-20 22:16:13 -0800178#include <asm/div64.h> /* do_div */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
Jesper Dangaard Brouer40207262015-05-21 12:16:56 +0200180#define VERSION "2.75"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181#define IP_NAME_SZ 32
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800182#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -0800183#define MPLS_STACK_BOTTOM htonl(0x00000100)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
Joe Perchesf9467ea2010-06-21 12:29:14 +0000185#define func_enter() pr_debug("entering %s\n", __func__);
186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187/* Device flag bits */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800188#define F_IPSRC_RND (1<<0) /* IP-Src Random */
189#define F_IPDST_RND (1<<1) /* IP-Dst Random */
190#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
191#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
192#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
193#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
194#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
195#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800196#define F_MPLS_RND (1<<8) /* Random MPLS labels */
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700197#define F_VID_RND (1<<9) /* Random VLAN ID */
198#define F_SVID_RND (1<<10) /* Random SVLAN ID */
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700199#define F_FLOW_SEQ (1<<11) /* Sequential flows */
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700200#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
Robert Olsson45b270f2007-08-28 15:45:55 -0700201#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
Robert Olssone6fce5b2008-08-07 02:23:01 -0700202#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
Robert Olssone99b99b2010-03-18 22:44:30 +0000203#define F_NODE (1<<15) /* Node memory alloc*/
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200204#define F_UDPCSUM (1<<16) /* Include UDP checksum */
Jesper Dangaard Brouerafb84b622014-08-28 18:14:47 +0200205#define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
207/* Thread control flag bits */
Stephen Hemminger6b80d6a2009-09-22 19:41:42 +0000208#define T_STOP (1<<0) /* Stop run */
209#define T_RUN (1<<1) /* Start run */
210#define T_REMDEVALL (1<<2) /* Remove all devs */
211#define T_REMDEV (1<<3) /* Remove one dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +0200213/* Xmit modes */
214#define M_START_XMIT 0 /* Default normal TX */
215#define M_NETIF_RECEIVE 1 /* Inject packets into stack */
216
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +0200217/* If lock -- protects updating of if_list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218#define if_lock(t) spin_lock(&(t->if_lock));
219#define if_unlock(t) spin_unlock(&(t->if_lock));
220
221/* Used to help with determining the pkts on receive */
222#define PKTGEN_MAGIC 0xbe9be955
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700223#define PG_PROC_DIR "pktgen"
224#define PGCTRL "pgctrl"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226#define MAX_CFLOWS 65536
227
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700228#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
229#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
230
Luiz Capitulino222f1802006-03-20 22:16:13 -0800231struct flow_state {
Al Viro252e3342006-11-14 20:48:11 -0800232 __be32 cur_daddr;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800233 int count;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700234#ifdef CONFIG_XFRM
235 struct xfrm_state *x;
236#endif
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700237 __u32 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238};
239
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700240/* flow flag bits */
241#define F_INIT (1<<0) /* flow has been initialized */
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243struct pktgen_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 /*
245 * Try to keep frequent/infrequent used vars. separated.
246 */
Stephen Hemminger39df2322007-03-04 16:11:51 -0800247 struct proc_dir_entry *entry; /* proc file */
248 struct pktgen_thread *pg_thread;/* the owner */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000249 struct list_head list; /* chaining in the thread's run-queue */
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +0200250 struct rcu_head rcu; /* freed by RCU */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000252 int running; /* if false, the test will stop */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800253
254 /* If min != max, then we will either do a linear iteration, or
255 * we will do a random selection from within the range.
256 */
257 __u32 flags;
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +0200258 int xmit_mode;
Amerigo Wang68bf9f02012-10-09 17:48:17 +0000259 int min_pkt_size;
260 int max_pkt_size;
Jamal Hadi Salim16dab722007-07-02 22:39:50 -0700261 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800262 int nfrags;
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +0200263 int removal_mark; /* non-zero => the device is marked for
264 * removal by worker thread */
265
Eric Dumazet26ad7872011-01-25 13:26:05 -0800266 struct page *page;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000267 u64 delay; /* nano-seconds */
268
Luiz Capitulino222f1802006-03-20 22:16:13 -0800269 __u64 count; /* Default No packets to send */
270 __u64 sofar; /* How many pkts we've sent so far */
271 __u64 tx_bytes; /* How many bytes we've transmitted */
John Fastabendf466dba2009-12-23 22:02:57 -0800272 __u64 errors; /* Errors when trying to transmit, */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Luiz Capitulino222f1802006-03-20 22:16:13 -0800274 /* runtime counters relating to clone_skb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
Luiz Capitulino222f1802006-03-20 22:16:13 -0800276 __u32 clone_count;
277 int last_ok; /* Was last skb sent?
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000278 * Or a failed transmit of some sort?
279 * This will keep sequence numbers in order
Luiz Capitulino222f1802006-03-20 22:16:13 -0800280 */
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000281 ktime_t next_tx;
282 ktime_t started_at;
283 ktime_t stopped_at;
284 u64 idle_acc; /* nano-seconds */
285
Luiz Capitulino222f1802006-03-20 22:16:13 -0800286 __u32 seq_num;
287
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000288 int clone_skb; /*
289 * Use multiple SKBs during packet gen.
290 * If this number is greater than 1, then
291 * that many copies of the same packet will be
292 * sent before a new packet is allocated.
293 * If you want to send 1024 identical packets
294 * before creating a new packet,
295 * set clone_skb to 1024.
Luiz Capitulino222f1802006-03-20 22:16:13 -0800296 */
297
298 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
299 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
300 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
301 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
302
303 struct in6_addr in6_saddr;
304 struct in6_addr in6_daddr;
305 struct in6_addr cur_in6_daddr;
306 struct in6_addr cur_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 /* For ranges */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800308 struct in6_addr min_in6_daddr;
309 struct in6_addr max_in6_daddr;
310 struct in6_addr min_in6_saddr;
311 struct in6_addr max_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Luiz Capitulino222f1802006-03-20 22:16:13 -0800313 /* If we're doing ranges, random or incremental, then this
314 * defines the min/max for those ranges.
315 */
Al Viro252e3342006-11-14 20:48:11 -0800316 __be32 saddr_min; /* inclusive, source IP address */
317 __be32 saddr_max; /* exclusive, source IP address */
318 __be32 daddr_min; /* inclusive, dest IP address */
319 __be32 daddr_max; /* exclusive, dest IP address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Luiz Capitulino222f1802006-03-20 22:16:13 -0800321 __u16 udp_src_min; /* inclusive, source UDP port */
322 __u16 udp_src_max; /* exclusive, source UDP port */
323 __u16 udp_dst_min; /* inclusive, dest UDP port */
324 __u16 udp_dst_max; /* exclusive, dest UDP port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700326 /* DSCP + ECN */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000327 __u8 tos; /* six MSB of (former) IPv4 TOS
328 are for dscp codepoint */
329 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
330 (see RFC 3260, sec. 4) */
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700331
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800332 /* MPLS */
Eric Dumazet95c96172012-04-15 05:58:06 +0000333 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800334 __be32 labels[MAX_MPLS_LABELS];
335
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700336 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
337 __u8 vlan_p;
338 __u8 vlan_cfi;
339 __u16 vlan_id; /* 0xffff means no vlan tag */
340
341 __u8 svlan_p;
342 __u8 svlan_cfi;
343 __u16 svlan_id; /* 0xffff means no svlan tag */
344
Luiz Capitulino222f1802006-03-20 22:16:13 -0800345 __u32 src_mac_count; /* How many MACs to iterate through */
346 __u32 dst_mac_count; /* How many MACs to iterate through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347
Luiz Capitulino222f1802006-03-20 22:16:13 -0800348 unsigned char dst_mac[ETH_ALEN];
349 unsigned char src_mac[ETH_ALEN];
350
351 __u32 cur_dst_mac_offset;
352 __u32 cur_src_mac_offset;
Al Viro252e3342006-11-14 20:48:11 -0800353 __be32 cur_saddr;
354 __be32 cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -0700355 __u16 ip_id;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800356 __u16 cur_udp_dst;
357 __u16 cur_udp_src;
Robert Olsson45b270f2007-08-28 15:45:55 -0700358 __u16 cur_queue_map;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800359 __u32 cur_pkt_size;
Eric Dumazetbaac8562009-11-05 21:04:32 -0800360 __u32 last_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800361
362 __u8 hh[14];
363 /* = {
364 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
365
366 We fill in SRC address later
367 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
368 0x08, 0x00
369 };
370 */
371 __u16 pad; /* pad out the hh struct to an even 16 bytes */
372
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000373 struct sk_buff *skb; /* skb we are to transmit next, used for when we
Luiz Capitulino222f1802006-03-20 22:16:13 -0800374 * are transmitting the same one multiple times
375 */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000376 struct net_device *odev; /* The out-going device.
377 * Note that the device should have it's
378 * pg_info pointer pointing back to this
379 * device.
380 * Set when the user specifies the out-going
381 * device name (not when the inject is
382 * started as it used to do.)
383 */
Eric Dumazet593f63b2009-11-23 01:44:37 +0000384 char odevname[32];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 struct flow_state *flows;
Eric Dumazet95c96172012-04-15 05:58:06 +0000386 unsigned int cflows; /* Concurrent flows (config) */
387 unsigned int lflow; /* Flow length (config) */
388 unsigned int nflows; /* accumulated flows (stats) */
389 unsigned int curfl; /* current sequenced flow (state)*/
Robert Olsson45b270f2007-08-28 15:45:55 -0700390
391 u16 queue_map_min;
392 u16 queue_map_max;
John Fastabend9e50e3a2010-11-16 19:12:28 +0000393 __u32 skb_priority; /* skb priority field */
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -0700394 unsigned int burst; /* number of duplicated packets to burst */
Robert Olssone99b99b2010-03-18 22:44:30 +0000395 int node; /* Memory node */
Robert Olsson45b270f2007-08-28 15:45:55 -0700396
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700397#ifdef CONFIG_XFRM
398 __u8 ipsmode; /* IPSEC mode (config) */
399 __u8 ipsproto; /* IPSEC type (config) */
Fan Dude4aee72014-01-03 11:18:30 +0800400 __u32 spi;
Fan Ducf93d472014-01-03 11:18:31 +0800401 struct dst_entry dst;
402 struct dst_ops dstops;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700403#endif
Stephen Hemminger39df2322007-03-04 16:11:51 -0800404 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405};
406
407struct pktgen_hdr {
Al Viro252e3342006-11-14 20:48:11 -0800408 __be32 pgh_magic;
409 __be32 seq_num;
410 __be32 tv_sec;
411 __be32 tv_usec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412};
413
Cong Wang4e58a022013-01-28 19:55:53 +0000414
415static int pg_net_id __read_mostly;
416
417struct pktgen_net {
418 struct net *net;
419 struct proc_dir_entry *proc_dir;
420 struct list_head pktgen_threads;
421 bool pktgen_exiting;
422};
Eric Dumazet551eaff2010-11-21 10:26:44 -0800423
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424struct pktgen_thread {
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000425 spinlock_t if_lock; /* for list of devices */
Luiz Capitulinoc26a8012006-03-20 22:18:16 -0800426 struct list_head if_list; /* All device here */
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800427 struct list_head th_list;
David S. Milleree74baa2007-01-01 20:51:53 -0800428 struct task_struct *tsk;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800429 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000431 /* Field for thread to receive "posted" events terminate,
432 stop ifs etc. */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800433
434 u32 control;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 int cpu;
436
Luiz Capitulino222f1802006-03-20 22:16:13 -0800437 wait_queue_head_t queue;
Denis V. Lunevd3ede322008-05-20 15:12:44 -0700438 struct completion start_done;
Cong Wang4e58a022013-01-28 19:55:53 +0000439 struct pktgen_net *net;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440};
441
442#define REMOVE 1
443#define FIND 0
444
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000445static const char version[] =
Joe Perchesf9467ea2010-06-21 12:29:14 +0000446 "Packet Generator for packet performance testing. "
447 "Version: " VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
Luiz Capitulino222f1802006-03-20 22:16:13 -0800449static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
450static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
451static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -0800452 const char *ifname, bool exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
Cong Wang4e58a022013-01-28 19:55:53 +0000454static void pktgen_run_all_threads(struct pktgen_net *pn);
455static void pktgen_reset_all_threads(struct pktgen_net *pn);
456static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
Stephen Hemminger3bda06a2009-08-27 13:55:10 +0000457
Luiz Capitulino222f1802006-03-20 22:16:13 -0800458static void pktgen_stop(struct pktgen_thread *t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -0800460
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461/* Module parameters, defaults. */
Stephen Hemminger65c5b782009-08-27 13:55:09 +0000462static int pg_count_d __read_mostly = 1000;
463static int pg_delay_d __read_mostly;
464static int pg_clone_skb_d __read_mostly;
465static int debug __read_mostly;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
Luiz Capitulino222fa072006-03-20 22:24:27 -0800467static DEFINE_MUTEX(pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469static struct notifier_block pktgen_notifier_block = {
470 .notifier_call = pktgen_device_event,
471};
472
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473/*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900474 * /proc handling functions
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 *
476 */
477
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700478static int pgctrl_show(struct seq_file *seq, void *v)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800479{
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000480 seq_puts(seq, version);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700481 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482}
483
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000484static ssize_t pgctrl_write(struct file *file, const char __user *buf,
485 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486{
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700487 char data[128];
Cong Wang4e58a022013-01-28 19:55:53 +0000488 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
Mathias Krause09455742014-02-21 21:38:35 +0100490 if (!capable(CAP_NET_ADMIN))
491 return -EPERM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Mathias Krause20b0c712014-02-21 21:38:34 +0100493 if (count == 0)
494 return -EINVAL;
495
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700496 if (count > sizeof(data))
497 count = sizeof(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498
Mathias Krause09455742014-02-21 21:38:35 +0100499 if (copy_from_user(data, buf, count))
500 return -EFAULT;
501
Mathias Krause20b0c712014-02-21 21:38:34 +0100502 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
Luiz Capitulino222f1802006-03-20 22:16:13 -0800504 if (!strcmp(data, "stop"))
Cong Wang4e58a022013-01-28 19:55:53 +0000505 pktgen_stop_all_threads_ifs(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
Luiz Capitulino222f1802006-03-20 22:16:13 -0800507 else if (!strcmp(data, "start"))
Cong Wang4e58a022013-01-28 19:55:53 +0000508 pktgen_run_all_threads(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800510 else if (!strcmp(data, "reset"))
Cong Wang4e58a022013-01-28 19:55:53 +0000511 pktgen_reset_all_threads(pn);
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800512
Luiz Capitulino222f1802006-03-20 22:16:13 -0800513 else
Jesper Dangaard Brouer40207262015-05-21 12:16:56 +0200514 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
Mathias Krause09455742014-02-21 21:38:35 +0100516 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517}
518
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700519static int pgctrl_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520{
Al Virod9dda782013-03-31 18:16:14 -0400521 return single_open(file, pgctrl_show, PDE_DATA(inode));
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700522}
523
Arjan van de Ven9a321442007-02-12 00:55:35 -0800524static const struct file_operations pktgen_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800525 .owner = THIS_MODULE,
526 .open = pgctrl_open,
527 .read = seq_read,
528 .llseek = seq_lseek,
529 .write = pgctrl_write,
530 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700531};
532
533static int pktgen_if_show(struct seq_file *seq, void *v)
534{
Stephen Hemminger648fda72009-08-27 13:55:07 +0000535 const struct pktgen_dev *pkt_dev = seq->private;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000536 ktime_t stopped;
537 u64 idle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538
Luiz Capitulino222f1802006-03-20 22:16:13 -0800539 seq_printf(seq,
540 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
541 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
542 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
Luiz Capitulino222f1802006-03-20 22:16:13 -0800544 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000545 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
546 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
Eric Dumazet593f63b2009-11-23 01:44:37 +0000547 pkt_dev->clone_skb, pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
Luiz Capitulino222f1802006-03-20 22:16:13 -0800549 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
550 pkt_dev->lflow);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551
Robert Olsson45b270f2007-08-28 15:45:55 -0700552 seq_printf(seq,
553 " queue_map_min: %u queue_map_max: %u\n",
554 pkt_dev->queue_map_min,
555 pkt_dev->queue_map_max);
556
John Fastabend9e50e3a2010-11-16 19:12:28 +0000557 if (pkt_dev->skb_priority)
558 seq_printf(seq, " skb_priority: %u\n",
559 pkt_dev->skb_priority);
560
Luiz Capitulino222f1802006-03-20 22:16:13 -0800561 if (pkt_dev->flags & F_IPV6) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800562 seq_printf(seq,
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000563 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
564 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
565 &pkt_dev->in6_saddr,
566 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
567 &pkt_dev->in6_daddr,
568 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000569 } else {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800570 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000571 " dst_min: %s dst_max: %s\n",
572 pkt_dev->dst_min, pkt_dev->dst_max);
573 seq_printf(seq,
Jesper Dangaard Brouerd079abd2015-05-21 12:16:11 +0200574 " src_min: %s src_max: %s\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000575 pkt_dev->src_min, pkt_dev->src_max);
576 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700578 seq_puts(seq, " src_mac: ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
Johannes Berge1749612008-10-27 15:59:26 -0700580 seq_printf(seq, "%pM ",
581 is_zero_ether_addr(pkt_dev->src_mac) ?
582 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Thomas Graf97dc48e2014-05-16 23:28:54 +0200584 seq_puts(seq, "dst_mac: ");
Johannes Berge1749612008-10-27 15:59:26 -0700585 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
Luiz Capitulino222f1802006-03-20 22:16:13 -0800587 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000588 " udp_src_min: %d udp_src_max: %d"
589 " udp_dst_min: %d udp_dst_max: %d\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800590 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
591 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592
Luiz Capitulino222f1802006-03-20 22:16:13 -0800593 seq_printf(seq,
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800594 " src_mac_count: %d dst_mac_count: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700595 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800597 if (pkt_dev->nr_labels) {
Eric Dumazet95c96172012-04-15 05:58:06 +0000598 unsigned int i;
Thomas Graf97dc48e2014-05-16 23:28:54 +0200599 seq_puts(seq, " mpls: ");
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700600 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800601 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
602 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
603 }
604
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000605 if (pkt_dev->vlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700606 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000607 pkt_dev->vlan_id, pkt_dev->vlan_p,
608 pkt_dev->vlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700609
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000610 if (pkt_dev->svlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700611 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000612 pkt_dev->svlan_id, pkt_dev->svlan_p,
613 pkt_dev->svlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700614
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000615 if (pkt_dev->tos)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700616 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700617
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000618 if (pkt_dev->traffic_class)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700619 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700620
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -0700621 if (pkt_dev->burst > 1)
622 seq_printf(seq, " burst: %d\n", pkt_dev->burst);
623
Robert Olssone99b99b2010-03-18 22:44:30 +0000624 if (pkt_dev->node >= 0)
625 seq_printf(seq, " node: %d\n", pkt_dev->node);
626
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +0200627 if (pkt_dev->xmit_mode == M_NETIF_RECEIVE)
628 seq_puts(seq, " xmit_mode: netif_receive\n");
629
Thomas Graf97dc48e2014-05-16 23:28:54 +0200630 seq_puts(seq, " Flags: ");
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800631
Luiz Capitulino222f1802006-03-20 22:16:13 -0800632 if (pkt_dev->flags & F_IPV6)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200633 seq_puts(seq, "IPV6 ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Luiz Capitulino222f1802006-03-20 22:16:13 -0800635 if (pkt_dev->flags & F_IPSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200636 seq_puts(seq, "IPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637
Luiz Capitulino222f1802006-03-20 22:16:13 -0800638 if (pkt_dev->flags & F_IPDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200639 seq_puts(seq, "IPDST_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640
Luiz Capitulino222f1802006-03-20 22:16:13 -0800641 if (pkt_dev->flags & F_TXSIZE_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200642 seq_puts(seq, "TXSIZE_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
Luiz Capitulino222f1802006-03-20 22:16:13 -0800644 if (pkt_dev->flags & F_UDPSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200645 seq_puts(seq, "UDPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Luiz Capitulino222f1802006-03-20 22:16:13 -0800647 if (pkt_dev->flags & F_UDPDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200648 seq_puts(seq, "UDPDST_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800649
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200650 if (pkt_dev->flags & F_UDPCSUM)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200651 seq_puts(seq, "UDPCSUM ");
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200652
Jesper Dangaard Brouerafb84b622014-08-28 18:14:47 +0200653 if (pkt_dev->flags & F_NO_TIMESTAMP)
654 seq_puts(seq, "NO_TIMESTAMP ");
655
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800656 if (pkt_dev->flags & F_MPLS_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200657 seq_puts(seq, "MPLS_RND ");
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800658
Robert Olsson45b270f2007-08-28 15:45:55 -0700659 if (pkt_dev->flags & F_QUEUE_MAP_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200660 seq_puts(seq, "QUEUE_MAP_RND ");
Robert Olsson45b270f2007-08-28 15:45:55 -0700661
Robert Olssone6fce5b2008-08-07 02:23:01 -0700662 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200663 seq_puts(seq, "QUEUE_MAP_CPU ");
Robert Olssone6fce5b2008-08-07 02:23:01 -0700664
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700665 if (pkt_dev->cflows) {
666 if (pkt_dev->flags & F_FLOW_SEQ)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200667 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700668 else
Thomas Graf97dc48e2014-05-16 23:28:54 +0200669 seq_puts(seq, "FLOW_RND ");
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700670 }
671
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700672#ifdef CONFIG_XFRM
Fan Du81013282014-01-03 11:18:33 +0800673 if (pkt_dev->flags & F_IPSEC_ON) {
Thomas Graf97dc48e2014-05-16 23:28:54 +0200674 seq_puts(seq, "IPSEC ");
Fan Du81013282014-01-03 11:18:33 +0800675 if (pkt_dev->spi)
676 seq_printf(seq, "spi:%u", pkt_dev->spi);
677 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700678#endif
679
Luiz Capitulino222f1802006-03-20 22:16:13 -0800680 if (pkt_dev->flags & F_MACSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200681 seq_puts(seq, "MACSRC_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800682
683 if (pkt_dev->flags & F_MACDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200684 seq_puts(seq, "MACDST_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800685
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700686 if (pkt_dev->flags & F_VID_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200687 seq_puts(seq, "VID_RND ");
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700688
689 if (pkt_dev->flags & F_SVID_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200690 seq_puts(seq, "SVID_RND ");
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700691
Robert Olssone99b99b2010-03-18 22:44:30 +0000692 if (pkt_dev->flags & F_NODE)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200693 seq_puts(seq, "NODE_ALLOC ");
Robert Olssone99b99b2010-03-18 22:44:30 +0000694
Luiz Capitulino222f1802006-03-20 22:16:13 -0800695 seq_puts(seq, "\n");
696
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000697 /* not really stopped, more like last-running-at */
Daniel Borkmann398f3822012-10-28 08:27:19 +0000698 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000699 idle = pkt_dev->idle_acc;
700 do_div(idle, NSEC_PER_USEC);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800701
702 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000703 "Current:\n pkts-sofar: %llu errors: %llu\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800704 (unsigned long long)pkt_dev->sofar,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000705 (unsigned long long)pkt_dev->errors);
706
707 seq_printf(seq,
708 " started: %lluus stopped: %lluus idle: %lluus\n",
709 (unsigned long long) ktime_to_us(pkt_dev->started_at),
710 (unsigned long long) ktime_to_us(stopped),
711 (unsigned long long) idle);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800712
713 seq_printf(seq,
714 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700715 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
716 pkt_dev->cur_src_mac_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
Luiz Capitulino222f1802006-03-20 22:16:13 -0800718 if (pkt_dev->flags & F_IPV6) {
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000719 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
720 &pkt_dev->cur_in6_saddr,
721 &pkt_dev->cur_in6_daddr);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800722 } else
Amerigo Wang0373a942012-10-09 17:48:18 +0000723 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
724 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
Luiz Capitulino222f1802006-03-20 22:16:13 -0800726 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700727 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728
Robert Olsson45b270f2007-08-28 15:45:55 -0700729 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
730
Luiz Capitulino222f1802006-03-20 22:16:13 -0800731 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732
733 if (pkt_dev->result[0])
Luiz Capitulino222f1802006-03-20 22:16:13 -0800734 seq_printf(seq, "Result: %s\n", pkt_dev->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 else
Thomas Graf97dc48e2014-05-16 23:28:54 +0200736 seq_puts(seq, "Result: Idle\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700738 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739}
740
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800741
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000742static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
743 __u32 *num)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800744{
745 int i = 0;
746 *num = 0;
747
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700748 for (; i < maxlen; i++) {
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000749 int value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800750 char c;
751 *num <<= 4;
752 if (get_user(c, &user_buffer[i]))
753 return -EFAULT;
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000754 value = hex_to_bin(c);
755 if (value >= 0)
756 *num |= value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800757 else
758 break;
759 }
760 return i;
761}
762
Luiz Capitulino222f1802006-03-20 22:16:13 -0800763static int count_trail_chars(const char __user * user_buffer,
764 unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765{
766 int i;
767
768 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800769 char c;
770 if (get_user(c, &user_buffer[i]))
771 return -EFAULT;
772 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 case '\"':
774 case '\n':
775 case '\r':
776 case '\t':
777 case ' ':
778 case '=':
779 break;
780 default:
781 goto done;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700782 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 }
784done:
785 return i;
786}
787
Paul Gortmakerbf0813b2012-01-19 15:40:06 +0000788static long num_arg(const char __user *user_buffer, unsigned long maxlen,
789 unsigned long *num)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000791 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 *num = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800793
Paul Gortmakerd6182222010-10-18 12:14:44 +0000794 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800795 char c;
796 if (get_user(c, &user_buffer[i]))
797 return -EFAULT;
798 if ((c >= '0') && (c <= '9')) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 *num *= 10;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800800 *num += c - '0';
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 } else
802 break;
803 }
804 return i;
805}
806
Luiz Capitulino222f1802006-03-20 22:16:13 -0800807static int strn_len(const char __user * user_buffer, unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000809 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
Paul Gortmakerd6182222010-10-18 12:14:44 +0000811 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800812 char c;
813 if (get_user(c, &user_buffer[i]))
814 return -EFAULT;
815 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 case '\"':
817 case '\n':
818 case '\r':
819 case '\t':
820 case ' ':
821 goto done_str;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 default:
823 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700824 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 }
826done_str:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 return i;
828}
829
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800830static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
831{
Eric Dumazet95c96172012-04-15 05:58:06 +0000832 unsigned int n = 0;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800833 char c;
834 ssize_t i = 0;
835 int len;
836
837 pkt_dev->nr_labels = 0;
838 do {
839 __u32 tmp;
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700840 len = hex32_arg(&buffer[i], 8, &tmp);
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800841 if (len <= 0)
842 return len;
843 pkt_dev->labels[n] = htonl(tmp);
844 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
845 pkt_dev->flags |= F_MPLS_RND;
846 i += len;
847 if (get_user(c, &buffer[i]))
848 return -EFAULT;
849 i++;
850 n++;
851 if (n >= MAX_MPLS_LABELS)
852 return -E2BIG;
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700853 } while (c == ',');
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800854
855 pkt_dev->nr_labels = n;
856 return i;
857}
858
Luiz Capitulino222f1802006-03-20 22:16:13 -0800859static ssize_t pktgen_if_write(struct file *file,
860 const char __user * user_buffer, size_t count,
861 loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862{
Joe Perches8a994a72010-07-12 10:50:23 +0000863 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800864 struct pktgen_dev *pkt_dev = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +0000865 int i, max, len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 char name[16], valstr[32];
867 unsigned long value = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800868 char *pg_result = NULL;
869 int tmp = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 char buf[128];
Luiz Capitulino222f1802006-03-20 22:16:13 -0800871
872 pg_result = &(pkt_dev->result[0]);
873
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 if (count < 1) {
Joe Perches294a0b72014-09-09 21:17:30 -0700875 pr_warn("wrong command format\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 return -EINVAL;
877 }
Luiz Capitulino222f1802006-03-20 22:16:13 -0800878
Paul Gortmakerd6182222010-10-18 12:14:44 +0000879 max = count;
880 tmp = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800881 if (tmp < 0) {
Joe Perches294a0b72014-09-09 21:17:30 -0700882 pr_warn("illegal format\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800883 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884 }
Paul Gortmakerd6182222010-10-18 12:14:44 +0000885 i = tmp;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 /* Read variable name */
888
889 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000890 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800891 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 memset(name, 0, sizeof(name));
Luiz Capitulino222f1802006-03-20 22:16:13 -0800894 if (copy_from_user(name, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 return -EFAULT;
896 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800897
898 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800900 if (len < 0)
901 return len;
902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 i += len;
904
905 if (debug) {
Dmitry Torokhov86c2c0a2010-11-06 20:11:38 +0000906 size_t copy = min_t(size_t, count, 1023);
Nelson Elhage448d7b52010-10-28 11:31:07 -0700907 char tb[copy + 1];
908 if (copy_from_user(tb, user_buffer, copy))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 return -EFAULT;
Nelson Elhage448d7b52010-10-28 11:31:07 -0700910 tb[copy] = 0;
Joe Perchesf342cda2012-05-16 17:50:41 +0000911 pr_debug("%s,%lu buffer -:%s:-\n",
912 name, (unsigned long)count, tb);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800913 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914
915 if (!strcmp(name, "min_pkt_size")) {
916 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000917 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800918 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000919
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800921 if (value < 14 + 20 + 8)
922 value = 14 + 20 + 8;
923 if (value != pkt_dev->min_pkt_size) {
924 pkt_dev->min_pkt_size = value;
925 pkt_dev->cur_pkt_size = value;
926 }
927 sprintf(pg_result, "OK: min_pkt_size=%u",
928 pkt_dev->min_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 return count;
930 }
931
Luiz Capitulino222f1802006-03-20 22:16:13 -0800932 if (!strcmp(name, "max_pkt_size")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000934 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800935 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000936
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800938 if (value < 14 + 20 + 8)
939 value = 14 + 20 + 8;
940 if (value != pkt_dev->max_pkt_size) {
941 pkt_dev->max_pkt_size = value;
942 pkt_dev->cur_pkt_size = value;
943 }
944 sprintf(pg_result, "OK: max_pkt_size=%u",
945 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 return count;
947 }
948
Luiz Capitulino222f1802006-03-20 22:16:13 -0800949 /* Shortcut for min = max */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950
951 if (!strcmp(name, "pkt_size")) {
952 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000953 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800954 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000955
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800957 if (value < 14 + 20 + 8)
958 value = 14 + 20 + 8;
959 if (value != pkt_dev->min_pkt_size) {
960 pkt_dev->min_pkt_size = value;
961 pkt_dev->max_pkt_size = value;
962 pkt_dev->cur_pkt_size = value;
963 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
965 return count;
966 }
967
Luiz Capitulino222f1802006-03-20 22:16:13 -0800968 if (!strcmp(name, "debug")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000970 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800971 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000972
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800974 debug = value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 sprintf(pg_result, "OK: debug=%u", debug);
976 return count;
977 }
978
Luiz Capitulino222f1802006-03-20 22:16:13 -0800979 if (!strcmp(name, "frags")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000981 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800982 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000983
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984 i += len;
985 pkt_dev->nfrags = value;
986 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
987 return count;
988 }
989 if (!strcmp(name, "delay")) {
990 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000991 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800992 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000993
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994 i += len;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000995 if (value == 0x7FFFFFFF)
996 pkt_dev->delay = ULLONG_MAX;
997 else
Eric Dumazet9240d712009-10-03 01:39:18 +0000998 pkt_dev->delay = (u64)value;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000999
1000 sprintf(pg_result, "OK: delay=%llu",
1001 (unsigned long long) pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 return count;
1003 }
Daniel Turull43d28b62010-06-09 22:49:57 +00001004 if (!strcmp(name, "rate")) {
1005 len = num_arg(&user_buffer[i], 10, &value);
1006 if (len < 0)
1007 return len;
1008
1009 i += len;
1010 if (!value)
1011 return len;
1012 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
1013 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001014 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +00001015
1016 sprintf(pg_result, "OK: rate=%lu", value);
1017 return count;
1018 }
1019 if (!strcmp(name, "ratep")) {
1020 len = num_arg(&user_buffer[i], 10, &value);
1021 if (len < 0)
1022 return len;
1023
1024 i += len;
1025 if (!value)
1026 return len;
1027 pkt_dev->delay = NSEC_PER_SEC/value;
1028 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001029 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +00001030
1031 sprintf(pg_result, "OK: rate=%lu", value);
1032 return count;
1033 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001034 if (!strcmp(name, "udp_src_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001036 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001037 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001038
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001040 if (value != pkt_dev->udp_src_min) {
1041 pkt_dev->udp_src_min = value;
1042 pkt_dev->cur_udp_src = value;
1043 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1045 return count;
1046 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001047 if (!strcmp(name, "udp_dst_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001049 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001050 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001051
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001053 if (value != pkt_dev->udp_dst_min) {
1054 pkt_dev->udp_dst_min = value;
1055 pkt_dev->cur_udp_dst = value;
1056 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1058 return count;
1059 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001060 if (!strcmp(name, "udp_src_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001062 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001063 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001064
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001066 if (value != pkt_dev->udp_src_max) {
1067 pkt_dev->udp_src_max = value;
1068 pkt_dev->cur_udp_src = value;
1069 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1071 return count;
1072 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001073 if (!strcmp(name, "udp_dst_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001075 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001076 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001077
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001079 if (value != pkt_dev->udp_dst_max) {
1080 pkt_dev->udp_dst_max = value;
1081 pkt_dev->cur_udp_dst = value;
1082 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1084 return count;
1085 }
1086 if (!strcmp(name, "clone_skb")) {
1087 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001088 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001089 return len;
Neil Hormand8873312011-07-26 06:05:37 +00001090 if ((value > 0) &&
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02001091 ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) ||
1092 !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
Neil Hormand8873312011-07-26 06:05:37 +00001093 return -ENOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001095 pkt_dev->clone_skb = value;
1096
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1098 return count;
1099 }
1100 if (!strcmp(name, "count")) {
1101 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001102 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001103 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001104
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 i += len;
1106 pkt_dev->count = value;
1107 sprintf(pg_result, "OK: count=%llu",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001108 (unsigned long long)pkt_dev->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 return count;
1110 }
1111 if (!strcmp(name, "src_mac_count")) {
1112 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001113 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001114 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001115
Linus Torvalds1da177e2005-04-16 15:20:36 -07001116 i += len;
1117 if (pkt_dev->src_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001118 pkt_dev->src_mac_count = value;
1119 pkt_dev->cur_src_mac_offset = 0;
1120 }
1121 sprintf(pg_result, "OK: src_mac_count=%d",
1122 pkt_dev->src_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123 return count;
1124 }
1125 if (!strcmp(name, "dst_mac_count")) {
1126 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001127 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001128 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001129
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 i += len;
1131 if (pkt_dev->dst_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001132 pkt_dev->dst_mac_count = value;
1133 pkt_dev->cur_dst_mac_offset = 0;
1134 }
1135 sprintf(pg_result, "OK: dst_mac_count=%d",
1136 pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137 return count;
1138 }
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07001139 if (!strcmp(name, "burst")) {
1140 len = num_arg(&user_buffer[i], 10, &value);
1141 if (len < 0)
1142 return len;
1143
1144 i += len;
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02001145 if ((value > 1) && (pkt_dev->xmit_mode == M_START_XMIT) &&
Eric Dumazet52d6c8c2015-02-22 17:03:41 -08001146 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1147 return -ENOTSUPP;
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07001148 pkt_dev->burst = value < 1 ? 1 : value;
1149 sprintf(pg_result, "OK: burst=%d", pkt_dev->burst);
1150 return count;
1151 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001152 if (!strcmp(name, "node")) {
1153 len = num_arg(&user_buffer[i], 10, &value);
1154 if (len < 0)
1155 return len;
1156
1157 i += len;
1158
1159 if (node_possible(value)) {
1160 pkt_dev->node = value;
1161 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
Eric Dumazet26ad7872011-01-25 13:26:05 -08001162 if (pkt_dev->page) {
1163 put_page(pkt_dev->page);
1164 pkt_dev->page = NULL;
1165 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001166 }
1167 else
1168 sprintf(pg_result, "ERROR: node not possible");
1169 return count;
1170 }
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02001171 if (!strcmp(name, "xmit_mode")) {
1172 char f[32];
1173
1174 memset(f, 0, 32);
1175 len = strn_len(&user_buffer[i], sizeof(f) - 1);
1176 if (len < 0)
1177 return len;
1178
1179 if (copy_from_user(f, &user_buffer[i], len))
1180 return -EFAULT;
1181 i += len;
1182
1183 if (strcmp(f, "start_xmit") == 0) {
1184 pkt_dev->xmit_mode = M_START_XMIT;
1185 } else if (strcmp(f, "netif_receive") == 0) {
1186 /* clone_skb set earlier, not supported in this mode */
1187 if (pkt_dev->clone_skb > 0)
1188 return -ENOTSUPP;
1189
1190 pkt_dev->xmit_mode = M_NETIF_RECEIVE;
Alexei Starovoitov9eea9222015-05-11 15:19:48 -07001191
1192 /* make sure new packet is allocated every time
1193 * pktgen_xmit() is called
1194 */
1195 pkt_dev->last_ok = 1;
1196
1197 /* override clone_skb if user passed default value
1198 * at module loading time
1199 */
1200 pkt_dev->clone_skb = 0;
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02001201 } else {
1202 sprintf(pg_result,
1203 "xmit_mode -:%s:- unknown\nAvailable modes: %s",
1204 f, "start_xmit, netif_receive\n");
1205 return count;
1206 }
1207 sprintf(pg_result, "OK: xmit_mode=%s", f);
1208 return count;
1209 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 if (!strcmp(name, "flag")) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001211 char f[32];
1212 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001214 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001215 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001216
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 if (copy_from_user(f, &user_buffer[i], len))
1218 return -EFAULT;
1219 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001220 if (strcmp(f, "IPSRC_RND") == 0)
1221 pkt_dev->flags |= F_IPSRC_RND;
1222
1223 else if (strcmp(f, "!IPSRC_RND") == 0)
1224 pkt_dev->flags &= ~F_IPSRC_RND;
1225
1226 else if (strcmp(f, "TXSIZE_RND") == 0)
1227 pkt_dev->flags |= F_TXSIZE_RND;
1228
1229 else if (strcmp(f, "!TXSIZE_RND") == 0)
1230 pkt_dev->flags &= ~F_TXSIZE_RND;
1231
1232 else if (strcmp(f, "IPDST_RND") == 0)
1233 pkt_dev->flags |= F_IPDST_RND;
1234
1235 else if (strcmp(f, "!IPDST_RND") == 0)
1236 pkt_dev->flags &= ~F_IPDST_RND;
1237
1238 else if (strcmp(f, "UDPSRC_RND") == 0)
1239 pkt_dev->flags |= F_UDPSRC_RND;
1240
1241 else if (strcmp(f, "!UDPSRC_RND") == 0)
1242 pkt_dev->flags &= ~F_UDPSRC_RND;
1243
1244 else if (strcmp(f, "UDPDST_RND") == 0)
1245 pkt_dev->flags |= F_UDPDST_RND;
1246
1247 else if (strcmp(f, "!UDPDST_RND") == 0)
1248 pkt_dev->flags &= ~F_UDPDST_RND;
1249
1250 else if (strcmp(f, "MACSRC_RND") == 0)
1251 pkt_dev->flags |= F_MACSRC_RND;
1252
1253 else if (strcmp(f, "!MACSRC_RND") == 0)
1254 pkt_dev->flags &= ~F_MACSRC_RND;
1255
1256 else if (strcmp(f, "MACDST_RND") == 0)
1257 pkt_dev->flags |= F_MACDST_RND;
1258
1259 else if (strcmp(f, "!MACDST_RND") == 0)
1260 pkt_dev->flags &= ~F_MACDST_RND;
1261
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001262 else if (strcmp(f, "MPLS_RND") == 0)
1263 pkt_dev->flags |= F_MPLS_RND;
1264
1265 else if (strcmp(f, "!MPLS_RND") == 0)
1266 pkt_dev->flags &= ~F_MPLS_RND;
1267
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001268 else if (strcmp(f, "VID_RND") == 0)
1269 pkt_dev->flags |= F_VID_RND;
1270
1271 else if (strcmp(f, "!VID_RND") == 0)
1272 pkt_dev->flags &= ~F_VID_RND;
1273
1274 else if (strcmp(f, "SVID_RND") == 0)
1275 pkt_dev->flags |= F_SVID_RND;
1276
1277 else if (strcmp(f, "!SVID_RND") == 0)
1278 pkt_dev->flags &= ~F_SVID_RND;
1279
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07001280 else if (strcmp(f, "FLOW_SEQ") == 0)
1281 pkt_dev->flags |= F_FLOW_SEQ;
1282
Robert Olsson45b270f2007-08-28 15:45:55 -07001283 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1284 pkt_dev->flags |= F_QUEUE_MAP_RND;
1285
1286 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1287 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
Robert Olssone6fce5b2008-08-07 02:23:01 -07001288
1289 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1290 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1291
1292 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1293 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07001294#ifdef CONFIG_XFRM
1295 else if (strcmp(f, "IPSEC") == 0)
1296 pkt_dev->flags |= F_IPSEC_ON;
1297#endif
1298
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001299 else if (strcmp(f, "!IPV6") == 0)
1300 pkt_dev->flags &= ~F_IPV6;
1301
Robert Olssone99b99b2010-03-18 22:44:30 +00001302 else if (strcmp(f, "NODE_ALLOC") == 0)
1303 pkt_dev->flags |= F_NODE;
1304
1305 else if (strcmp(f, "!NODE_ALLOC") == 0)
1306 pkt_dev->flags &= ~F_NODE;
1307
Thomas Grafc26bf4a2013-07-25 18:12:18 +02001308 else if (strcmp(f, "UDPCSUM") == 0)
1309 pkt_dev->flags |= F_UDPCSUM;
1310
1311 else if (strcmp(f, "!UDPCSUM") == 0)
1312 pkt_dev->flags &= ~F_UDPCSUM;
1313
Jesper Dangaard Brouerafb84b622014-08-28 18:14:47 +02001314 else if (strcmp(f, "NO_TIMESTAMP") == 0)
1315 pkt_dev->flags |= F_NO_TIMESTAMP;
1316
Jesper Dangaard Brouerf1f00d8ff2015-05-07 16:34:51 +02001317 else if (strcmp(f, "!NO_TIMESTAMP") == 0)
1318 pkt_dev->flags &= ~F_NO_TIMESTAMP;
1319
Luiz Capitulino222f1802006-03-20 22:16:13 -08001320 else {
1321 sprintf(pg_result,
1322 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1323 f,
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001324 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
Mathias Krause72f8e062014-02-21 21:38:36 +01001325 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1326 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1327 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
Jesper Dangaard Brouerafb84b622014-08-28 18:14:47 +02001328 "NO_TIMESTAMP, "
Mathias Krause72f8e062014-02-21 21:38:36 +01001329#ifdef CONFIG_XFRM
1330 "IPSEC, "
1331#endif
1332 "NODE_ALLOC\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001333 return count;
1334 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1336 return count;
1337 }
1338 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1339 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001340 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001341 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342
Luiz Capitulino222f1802006-03-20 22:16:13 -08001343 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001345 buf[len] = 0;
1346 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1347 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1348 strncpy(pkt_dev->dst_min, buf, len);
1349 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1350 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1351 }
1352 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001353 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001354 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1356 return count;
1357 }
1358 if (!strcmp(name, "dst_max")) {
1359 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001360 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001361 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001362
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363
Luiz Capitulino222f1802006-03-20 22:16:13 -08001364 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 return -EFAULT;
1366
Luiz Capitulino222f1802006-03-20 22:16:13 -08001367 buf[len] = 0;
1368 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1369 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1370 strncpy(pkt_dev->dst_max, buf, len);
1371 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1372 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1373 }
1374 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001375 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 i += len;
1377 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1378 return count;
1379 }
1380 if (!strcmp(name, "dst6")) {
1381 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001382 if (len < 0)
1383 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384
1385 pkt_dev->flags |= F_IPV6;
1386
Luiz Capitulino222f1802006-03-20 22:16:13 -08001387 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001389 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390
Amerigo Wangc468fb12012-10-09 17:48:20 +00001391 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001392 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001394 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001395
Luiz Capitulino222f1802006-03-20 22:16:13 -08001396 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001397 pr_debug("dst6 set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398
Luiz Capitulino222f1802006-03-20 22:16:13 -08001399 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 sprintf(pg_result, "OK: dst6=%s", buf);
1401 return count;
1402 }
1403 if (!strcmp(name, "dst6_min")) {
1404 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001405 if (len < 0)
1406 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407
1408 pkt_dev->flags |= F_IPV6;
1409
Luiz Capitulino222f1802006-03-20 22:16:13 -08001410 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001412 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413
Amerigo Wangc468fb12012-10-09 17:48:20 +00001414 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001415 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001417 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001418 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001419 pr_debug("dst6_min set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001420
Luiz Capitulino222f1802006-03-20 22:16:13 -08001421 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422 sprintf(pg_result, "OK: dst6_min=%s", buf);
1423 return count;
1424 }
1425 if (!strcmp(name, "dst6_max")) {
1426 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001427 if (len < 0)
1428 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429
1430 pkt_dev->flags |= F_IPV6;
1431
Luiz Capitulino222f1802006-03-20 22:16:13 -08001432 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001434 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435
Amerigo Wangc468fb12012-10-09 17:48:20 +00001436 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001437 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438
Luiz Capitulino222f1802006-03-20 22:16:13 -08001439 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001440 pr_debug("dst6_max set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441
Luiz Capitulino222f1802006-03-20 22:16:13 -08001442 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 sprintf(pg_result, "OK: dst6_max=%s", buf);
1444 return count;
1445 }
1446 if (!strcmp(name, "src6")) {
1447 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001448 if (len < 0)
1449 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450
1451 pkt_dev->flags |= F_IPV6;
1452
Luiz Capitulino222f1802006-03-20 22:16:13 -08001453 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001455 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456
Amerigo Wangc468fb12012-10-09 17:48:20 +00001457 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001458 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001460 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461
Luiz Capitulino222f1802006-03-20 22:16:13 -08001462 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001463 pr_debug("src6 set to: %s\n", buf);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001464
1465 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 sprintf(pg_result, "OK: src6=%s", buf);
1467 return count;
1468 }
1469 if (!strcmp(name, "src_min")) {
1470 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001471 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001472 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001473
Luiz Capitulino222f1802006-03-20 22:16:13 -08001474 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001475 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001476 buf[len] = 0;
1477 if (strcmp(buf, pkt_dev->src_min) != 0) {
1478 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1479 strncpy(pkt_dev->src_min, buf, len);
1480 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1481 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1482 }
1483 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001484 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 i += len;
1486 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1487 return count;
1488 }
1489 if (!strcmp(name, "src_max")) {
1490 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001491 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001492 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001493
Luiz Capitulino222f1802006-03-20 22:16:13 -08001494 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001496 buf[len] = 0;
1497 if (strcmp(buf, pkt_dev->src_max) != 0) {
1498 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1499 strncpy(pkt_dev->src_max, buf, len);
1500 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1501 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1502 }
1503 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001504 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001505 i += len;
1506 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1507 return count;
1508 }
1509 if (!strcmp(name, "dst_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001511 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001512 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001513
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001515 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001518 if (!mac_pton(valstr, pkt_dev->dst_mac))
1519 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520 /* Set up Dest MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08001521 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001522
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001523 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524 return count;
1525 }
1526 if (!strcmp(name, "src_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001528 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001529 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001530
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001532 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001533 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001535 if (!mac_pton(valstr, pkt_dev->src_mac))
1536 return -EINVAL;
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001537 /* Set up Src MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08001538 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001539
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001540 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001541 return count;
1542 }
1543
Luiz Capitulino222f1802006-03-20 22:16:13 -08001544 if (!strcmp(name, "clear_counters")) {
1545 pktgen_clear_counters(pkt_dev);
1546 sprintf(pg_result, "OK: Clearing counters.\n");
1547 return count;
1548 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549
1550 if (!strcmp(name, "flows")) {
1551 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001552 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001553 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001554
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555 i += len;
1556 if (value > MAX_CFLOWS)
1557 value = MAX_CFLOWS;
1558
1559 pkt_dev->cflows = value;
1560 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1561 return count;
1562 }
Fan Du6bae9192014-01-10 14:39:13 +08001563#ifdef CONFIG_XFRM
Fan Dude4aee72014-01-03 11:18:30 +08001564 if (!strcmp(name, "spi")) {
1565 len = num_arg(&user_buffer[i], 10, &value);
1566 if (len < 0)
1567 return len;
1568
1569 i += len;
1570 pkt_dev->spi = value;
1571 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1572 return count;
1573 }
Fan Du6bae9192014-01-10 14:39:13 +08001574#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575 if (!strcmp(name, "flowlen")) {
1576 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001577 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001578 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001579
Linus Torvalds1da177e2005-04-16 15:20:36 -07001580 i += len;
1581 pkt_dev->lflow = value;
1582 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1583 return count;
1584 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001585
Robert Olsson45b270f2007-08-28 15:45:55 -07001586 if (!strcmp(name, "queue_map_min")) {
1587 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001588 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001589 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001590
Robert Olsson45b270f2007-08-28 15:45:55 -07001591 i += len;
1592 pkt_dev->queue_map_min = value;
1593 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1594 return count;
1595 }
1596
1597 if (!strcmp(name, "queue_map_max")) {
1598 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001599 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001600 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001601
Robert Olsson45b270f2007-08-28 15:45:55 -07001602 i += len;
1603 pkt_dev->queue_map_max = value;
1604 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1605 return count;
1606 }
1607
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001608 if (!strcmp(name, "mpls")) {
Eric Dumazet95c96172012-04-15 05:58:06 +00001609 unsigned int n, cnt;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001610
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001611 len = get_labels(&user_buffer[i], pkt_dev);
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001612 if (len < 0)
1613 return len;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001614 i += len;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001615 cnt = sprintf(pg_result, "OK: mpls=");
Stephen Hemmingere71a4782007-04-10 20:10:33 -07001616 for (n = 0; n < pkt_dev->nr_labels; n++)
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001617 cnt += sprintf(pg_result + cnt,
1618 "%08x%s", ntohl(pkt_dev->labels[n]),
1619 n == pkt_dev->nr_labels-1 ? "" : ",");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001620
1621 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1622 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1623 pkt_dev->svlan_id = 0xffff;
1624
1625 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001626 pr_debug("VLAN/SVLAN auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001627 }
1628 return count;
1629 }
1630
1631 if (!strcmp(name, "vlan_id")) {
1632 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001633 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001634 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001635
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001636 i += len;
1637 if (value <= 4095) {
1638 pkt_dev->vlan_id = value; /* turn on VLAN */
1639
1640 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001641 pr_debug("VLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001642
1643 if (debug && pkt_dev->nr_labels)
Joe Perchesf342cda2012-05-16 17:50:41 +00001644 pr_debug("MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001645
1646 pkt_dev->nr_labels = 0; /* turn off MPLS */
1647 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1648 } else {
1649 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1650 pkt_dev->svlan_id = 0xffff;
1651
1652 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001653 pr_debug("VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001654 }
1655 return count;
1656 }
1657
1658 if (!strcmp(name, "vlan_p")) {
1659 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001660 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001661 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001662
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001663 i += len;
1664 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1665 pkt_dev->vlan_p = value;
1666 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1667 } else {
1668 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1669 }
1670 return count;
1671 }
1672
1673 if (!strcmp(name, "vlan_cfi")) {
1674 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001675 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001676 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001677
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001678 i += len;
1679 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1680 pkt_dev->vlan_cfi = value;
1681 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1682 } else {
1683 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1684 }
1685 return count;
1686 }
1687
1688 if (!strcmp(name, "svlan_id")) {
1689 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001690 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001691 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001692
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001693 i += len;
1694 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1695 pkt_dev->svlan_id = value; /* turn on SVLAN */
1696
1697 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001698 pr_debug("SVLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001699
1700 if (debug && pkt_dev->nr_labels)
Joe Perchesf342cda2012-05-16 17:50:41 +00001701 pr_debug("MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001702
1703 pkt_dev->nr_labels = 0; /* turn off MPLS */
1704 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1705 } else {
1706 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1707 pkt_dev->svlan_id = 0xffff;
1708
1709 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001710 pr_debug("VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001711 }
1712 return count;
1713 }
1714
1715 if (!strcmp(name, "svlan_p")) {
1716 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001717 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001718 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001719
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001720 i += len;
1721 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1722 pkt_dev->svlan_p = value;
1723 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1724 } else {
1725 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1726 }
1727 return count;
1728 }
1729
1730 if (!strcmp(name, "svlan_cfi")) {
1731 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001732 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001733 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001734
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001735 i += len;
1736 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1737 pkt_dev->svlan_cfi = value;
1738 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1739 } else {
1740 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1741 }
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001742 return count;
1743 }
1744
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001745 if (!strcmp(name, "tos")) {
1746 __u32 tmp_value = 0;
1747 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001748 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001749 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001750
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001751 i += len;
1752 if (len == 2) {
1753 pkt_dev->tos = tmp_value;
1754 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1755 } else {
1756 sprintf(pg_result, "ERROR: tos must be 00-ff");
1757 }
1758 return count;
1759 }
1760
1761 if (!strcmp(name, "traffic_class")) {
1762 __u32 tmp_value = 0;
1763 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001764 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001765 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001766
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001767 i += len;
1768 if (len == 2) {
1769 pkt_dev->traffic_class = tmp_value;
1770 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1771 } else {
1772 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1773 }
1774 return count;
1775 }
1776
John Fastabend9e50e3a2010-11-16 19:12:28 +00001777 if (!strcmp(name, "skb_priority")) {
1778 len = num_arg(&user_buffer[i], 9, &value);
1779 if (len < 0)
1780 return len;
1781
1782 i += len;
1783 pkt_dev->skb_priority = value;
1784 sprintf(pg_result, "OK: skb_priority=%i",
1785 pkt_dev->skb_priority);
1786 return count;
1787 }
1788
Linus Torvalds1da177e2005-04-16 15:20:36 -07001789 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1790 return -EINVAL;
1791}
1792
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001793static int pktgen_if_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001794{
Al Virod9dda782013-03-31 18:16:14 -04001795 return single_open(file, pktgen_if_show, PDE_DATA(inode));
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001796}
1797
Arjan van de Ven9a321442007-02-12 00:55:35 -08001798static const struct file_operations pktgen_if_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001799 .owner = THIS_MODULE,
1800 .open = pktgen_if_open,
1801 .read = seq_read,
1802 .llseek = seq_lseek,
1803 .write = pktgen_if_write,
1804 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001805};
1806
1807static int pktgen_thread_show(struct seq_file *seq, void *v)
1808{
Luiz Capitulino222f1802006-03-20 22:16:13 -08001809 struct pktgen_thread *t = seq->private;
Stephen Hemminger648fda72009-08-27 13:55:07 +00001810 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001812 BUG_ON(!t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813
Thomas Graf97dc48e2014-05-16 23:28:54 +02001814 seq_puts(seq, "Running: ");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001815
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02001816 rcu_read_lock();
1817 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001818 if (pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001819 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820
Thomas Graf97dc48e2014-05-16 23:28:54 +02001821 seq_puts(seq, "\nStopped: ");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001822
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02001823 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001824 if (!pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001825 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826
1827 if (t->result[0])
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001828 seq_printf(seq, "\nResult: %s\n", t->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001829 else
Thomas Graf97dc48e2014-05-16 23:28:54 +02001830 seq_puts(seq, "\nResult: NA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001831
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02001832 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001834 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835}
1836
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001837static ssize_t pktgen_thread_write(struct file *file,
Luiz Capitulino222f1802006-03-20 22:16:13 -08001838 const char __user * user_buffer,
1839 size_t count, loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840{
Joe Perches8a994a72010-07-12 10:50:23 +00001841 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001842 struct pktgen_thread *t = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +00001843 int i, max, len, ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844 char name[40];
Luiz Capitulino222f1802006-03-20 22:16:13 -08001845 char *pg_result;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001846
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 if (count < 1) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001848 // sprintf(pg_result, "Wrong command format");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849 return -EINVAL;
1850 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001851
Paul Gortmakerd6182222010-10-18 12:14:44 +00001852 max = count;
1853 len = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001854 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001855 return len;
1856
Paul Gortmakerd6182222010-10-18 12:14:44 +00001857 i = len;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001858
Linus Torvalds1da177e2005-04-16 15:20:36 -07001859 /* Read variable name */
1860
1861 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001862 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001863 return len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001864
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865 memset(name, 0, sizeof(name));
1866 if (copy_from_user(name, &user_buffer[i], len))
1867 return -EFAULT;
1868 i += len;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001869
Luiz Capitulino222f1802006-03-20 22:16:13 -08001870 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001871 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001872 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001873 return len;
1874
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875 i += len;
1876
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001877 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001878 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879
Luiz Capitulino222f1802006-03-20 22:16:13 -08001880 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001881 pr_err("ERROR: No thread\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 ret = -EINVAL;
1883 goto out;
1884 }
1885
1886 pg_result = &(t->result[0]);
1887
Luiz Capitulino222f1802006-03-20 22:16:13 -08001888 if (!strcmp(name, "add_device")) {
1889 char f[32];
1890 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001891 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001892 if (len < 0) {
1893 ret = len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001894 goto out;
1895 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001896 if (copy_from_user(f, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001897 return -EFAULT;
1898 i += len;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001899 mutex_lock(&pktgen_thread_lock);
Cong Wang604dfd62013-01-27 21:14:08 +00001900 ret = pktgen_add_device(t, f);
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001901 mutex_unlock(&pktgen_thread_lock);
Cong Wang604dfd62013-01-27 21:14:08 +00001902 if (!ret) {
1903 ret = count;
1904 sprintf(pg_result, "OK: add_device=%s", f);
1905 } else
1906 sprintf(pg_result, "ERROR: can not add device %s", f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907 goto out;
1908 }
1909
Luiz Capitulino222f1802006-03-20 22:16:13 -08001910 if (!strcmp(name, "rem_device_all")) {
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001911 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001912 t->control |= T_REMDEVALL;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001913 mutex_unlock(&pktgen_thread_lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001914 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915 ret = count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001916 sprintf(pg_result, "OK: rem_device_all");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001917 goto out;
1918 }
1919
Luiz Capitulino222f1802006-03-20 22:16:13 -08001920 if (!strcmp(name, "max_before_softirq")) {
Robert Olssonb1639112007-08-28 15:46:58 -07001921 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001922 ret = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923 goto out;
1924 }
1925
1926 ret = -EINVAL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001927out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928 return ret;
1929}
1930
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001931static int pktgen_thread_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932{
Al Virod9dda782013-03-31 18:16:14 -04001933 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934}
1935
Arjan van de Ven9a321442007-02-12 00:55:35 -08001936static const struct file_operations pktgen_thread_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001937 .owner = THIS_MODULE,
1938 .open = pktgen_thread_open,
1939 .read = seq_read,
1940 .llseek = seq_lseek,
1941 .write = pktgen_thread_write,
1942 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001943};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001944
1945/* Think find or remove for NN */
Cong Wang4e58a022013-01-28 19:55:53 +00001946static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1947 const char *ifname, int remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001948{
1949 struct pktgen_thread *t;
1950 struct pktgen_dev *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08001951 bool exact = (remove == FIND);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952
Cong Wang4e58a022013-01-28 19:55:53 +00001953 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Eric Dumazet3e984842009-11-24 14:50:53 -08001954 pkt_dev = pktgen_find_dev(t, ifname, exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955 if (pkt_dev) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001956 if (remove) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001957 pkt_dev->removal_mark = 1;
1958 t->control |= T_REMDEV;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001959 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960 break;
1961 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001963 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001964}
1965
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001966/*
1967 * mark a device for removal
1968 */
Cong Wang4e58a022013-01-28 19:55:53 +00001969static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970{
1971 struct pktgen_dev *pkt_dev = NULL;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001972 const int max_tries = 10, msec_per_try = 125;
1973 int i = 0;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001974
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001975 mutex_lock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001976 pr_debug("%s: marking %s for removal\n", __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001977
Luiz Capitulino222f1802006-03-20 22:16:13 -08001978 while (1) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001979
Cong Wang4e58a022013-01-28 19:55:53 +00001980 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001981 if (pkt_dev == NULL)
1982 break; /* success */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001983
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001984 mutex_unlock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001985 pr_debug("%s: waiting for %s to disappear....\n",
1986 __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001987 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001988 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001989
1990 if (++i >= max_tries) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001991 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1992 __func__, msec_per_try * i, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001993 break;
1994 }
1995
1996 }
1997
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001998 mutex_unlock(&pktgen_thread_lock);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001999}
Arthur Kepner95ed63f2006-03-20 21:26:56 -08002000
Cong Wang4e58a022013-01-28 19:55:53 +00002001static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
Stephen Hemminger39df2322007-03-04 16:11:51 -08002002{
2003 struct pktgen_thread *t;
2004
Cong Wang4e58a022013-01-28 19:55:53 +00002005 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08002006 struct pktgen_dev *pkt_dev;
2007
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02002008 rcu_read_lock();
2009 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08002010 if (pkt_dev->odev != dev)
2011 continue;
2012
David Howellsa8ca16e2013-04-12 17:27:28 +01002013 proc_remove(pkt_dev->entry);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002014
Alexey Dobriyan29753152009-08-28 23:34:43 -07002015 pkt_dev->entry = proc_create_data(dev->name, 0600,
Cong Wang4e58a022013-01-28 19:55:53 +00002016 pn->proc_dir,
Alexey Dobriyan29753152009-08-28 23:34:43 -07002017 &pktgen_if_fops,
2018 pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002019 if (!pkt_dev->entry)
Joe Perchesf9467ea2010-06-21 12:29:14 +00002020 pr_err("can't move proc entry for '%s'\n",
2021 dev->name);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002022 break;
2023 }
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02002024 rcu_read_unlock();
Stephen Hemminger39df2322007-03-04 16:11:51 -08002025 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026}
2027
Luiz Capitulino222f1802006-03-20 22:16:13 -08002028static int pktgen_device_event(struct notifier_block *unused,
2029 unsigned long event, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030{
Jiri Pirko351638e2013-05-28 01:30:21 +00002031 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
Cong Wang4e58a022013-01-28 19:55:53 +00002032 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002033
Cong Wang4e58a022013-01-28 19:55:53 +00002034 if (pn->pktgen_exiting)
Eric W. Biedermane9dc8652007-09-12 13:02:17 +02002035 return NOTIFY_DONE;
2036
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037 /* It is OK that we do not hold the group lock right now,
2038 * as we run under the RTNL lock.
2039 */
2040
2041 switch (event) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08002042 case NETDEV_CHANGENAME:
Cong Wang4e58a022013-01-28 19:55:53 +00002043 pktgen_change_name(pn, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044 break;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002045
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046 case NETDEV_UNREGISTER:
Cong Wang4e58a022013-01-28 19:55:53 +00002047 pktgen_mark_device(pn, dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002048 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -07002049 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050
2051 return NOTIFY_DONE;
2052}
2053
Cong Wang4e58a022013-01-28 19:55:53 +00002054static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
2055 struct pktgen_dev *pkt_dev,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002056 const char *ifname)
Robert Olssone6fce5b2008-08-07 02:23:01 -07002057{
2058 char b[IFNAMSIZ+5];
Paul Gortmakerd6182222010-10-18 12:14:44 +00002059 int i;
Robert Olssone6fce5b2008-08-07 02:23:01 -07002060
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002061 for (i = 0; ifname[i] != '@'; i++) {
2062 if (i == IFNAMSIZ)
Robert Olssone6fce5b2008-08-07 02:23:01 -07002063 break;
2064
2065 b[i] = ifname[i];
2066 }
2067 b[i] = 0;
2068
Cong Wang4e58a022013-01-28 19:55:53 +00002069 return dev_get_by_name(pn->net, b);
Robert Olssone6fce5b2008-08-07 02:23:01 -07002070}
2071
2072
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073/* Associate pktgen_dev with a device. */
2074
Cong Wang4e58a022013-01-28 19:55:53 +00002075static int pktgen_setup_dev(const struct pktgen_net *pn,
2076 struct pktgen_dev *pkt_dev, const char *ifname)
Luiz Capitulino222f1802006-03-20 22:16:13 -08002077{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 struct net_device *odev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08002079 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080
2081 /* Clean old setups */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002082 if (pkt_dev->odev) {
2083 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002084 pkt_dev->odev = NULL;
2085 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002086
Cong Wang4e58a022013-01-28 19:55:53 +00002087 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088 if (!odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002089 pr_err("no such netdevice: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002090 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 }
Stephen Hemminger39df2322007-03-04 16:11:51 -08002092
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093 if (odev->type != ARPHRD_ETHER) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002094 pr_err("not an ethernet device: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002095 err = -EINVAL;
2096 } else if (!netif_running(odev)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002097 pr_err("device is down: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002098 err = -ENETDOWN;
2099 } else {
2100 pkt_dev->odev = odev;
2101 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002103
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104 dev_put(odev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002105 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106}
2107
2108/* Read pkt_dev from the interface and set up internal pktgen_dev
2109 * structure to have the right information to create/send packets
2110 */
2111static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2112{
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002113 int ntxq;
2114
Luiz Capitulino222f1802006-03-20 22:16:13 -08002115 if (!pkt_dev->odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002116 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08002117 sprintf(pkt_dev->result,
2118 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2119 return;
2120 }
2121
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002122 /* make sure that we don't pick a non-existing transmit queue */
2123 ntxq = pkt_dev->odev->real_num_tx_queues;
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002124
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002125 if (ntxq <= pkt_dev->queue_map_min) {
Joe Perches294a0b72014-09-09 21:17:30 -07002126 pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2127 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2128 pkt_dev->odevname);
Dan Carpenter26e29ee2012-01-06 03:13:47 +00002129 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002130 }
Jesse Brandeburg88271662008-10-28 13:21:51 -07002131 if (pkt_dev->queue_map_max >= ntxq) {
Joe Perches294a0b72014-09-09 21:17:30 -07002132 pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2133 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2134 pkt_dev->odevname);
Dan Carpenter26e29ee2012-01-06 03:13:47 +00002135 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002136 }
2137
Luiz Capitulino222f1802006-03-20 22:16:13 -08002138 /* Default to the interface's mac if not explicitly set. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002139
Kris Katterjohnf404e9a2006-01-17 13:04:57 -08002140 if (is_zero_ether_addr(pkt_dev->src_mac))
Joe Perches9ea08b12014-01-20 09:52:19 -08002141 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142
Luiz Capitulino222f1802006-03-20 22:16:13 -08002143 /* Set up Dest MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08002144 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145
Luiz Capitulino222f1802006-03-20 22:16:13 -08002146 if (pkt_dev->flags & F_IPV6) {
Amerigo Wang4c139b82012-10-09 17:48:19 +00002147 int i, set = 0, err = 1;
2148 struct inet6_dev *idev;
2149
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002150 if (pkt_dev->min_pkt_size == 0) {
2151 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2152 + sizeof(struct udphdr)
2153 + sizeof(struct pktgen_hdr)
2154 + pkt_dev->pkt_overhead;
2155 }
2156
Luiz Capitulino222f1802006-03-20 22:16:13 -08002157 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2158 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 set = 1;
2160 break;
2161 }
2162
Luiz Capitulino222f1802006-03-20 22:16:13 -08002163 if (!set) {
2164
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165 /*
2166 * Use linklevel address if unconfigured.
2167 *
2168 * use ipv6_get_lladdr if/when it's get exported
2169 */
2170
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002171 rcu_read_lock();
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002172 idev = __in6_dev_get(pkt_dev->odev);
2173 if (idev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174 struct inet6_ifaddr *ifp;
2175
2176 read_lock_bh(&idev->lock);
Amerigo Wang4c139b82012-10-09 17:48:19 +00002177 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2178 if ((ifp->scope & IFA_LINK) &&
Joe Perchesf64f9e72009-11-29 16:55:45 -08002179 !(ifp->flags & IFA_F_TENTATIVE)) {
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00002180 pkt_dev->cur_in6_saddr = ifp->addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002181 err = 0;
2182 break;
2183 }
2184 }
2185 read_unlock_bh(&idev->lock);
2186 }
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002187 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002188 if (err)
Joe Perchesf9467ea2010-06-21 12:29:14 +00002189 pr_err("ERROR: IPv6 link address not available\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002191 } else {
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002192 if (pkt_dev->min_pkt_size == 0) {
2193 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2194 + sizeof(struct udphdr)
2195 + sizeof(struct pktgen_hdr)
2196 + pkt_dev->pkt_overhead;
2197 }
2198
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199 pkt_dev->saddr_min = 0;
2200 pkt_dev->saddr_max = 0;
2201 if (strlen(pkt_dev->src_min) == 0) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002202
2203 struct in_device *in_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204
2205 rcu_read_lock();
Herbert Xue5ed6392005-10-03 14:35:55 -07002206 in_dev = __in_dev_get_rcu(pkt_dev->odev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002207 if (in_dev) {
2208 if (in_dev->ifa_list) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002209 pkt_dev->saddr_min =
2210 in_dev->ifa_list->ifa_address;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002211 pkt_dev->saddr_max = pkt_dev->saddr_min;
2212 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002213 }
2214 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002215 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2217 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2218 }
2219
2220 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2221 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2222 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002223 /* Initialize current values. */
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002224 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2225 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2226 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2227
Luiz Capitulino222f1802006-03-20 22:16:13 -08002228 pkt_dev->cur_dst_mac_offset = 0;
2229 pkt_dev->cur_src_mac_offset = 0;
2230 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2231 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2232 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2233 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002234 pkt_dev->nflows = 0;
2235}
2236
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002238static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2239{
Stephen Hemmingeref879792009-09-22 19:41:43 +00002240 ktime_t start_time, end_time;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002241 s64 remaining;
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002242 struct hrtimer_sleeper t;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002243
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002244 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2245 hrtimer_set_expires(&t.timer, spin_until);
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002246
Daniel Turull43d28b62010-06-09 22:49:57 +00002247 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002248 if (remaining <= 0) {
2249 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002250 return;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002251 }
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002252
Daniel Borkmann398f3822012-10-28 08:27:19 +00002253 start_time = ktime_get();
Eric Dumazet33136d12011-10-20 17:00:21 -04002254 if (remaining < 100000) {
2255 /* for small delays (<100us), just loop until limit is reached */
2256 do {
Daniel Borkmann398f3822012-10-28 08:27:19 +00002257 end_time = ktime_get();
2258 } while (ktime_compare(end_time, spin_until) < 0);
Eric Dumazet33136d12011-10-20 17:00:21 -04002259 } else {
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002260 /* see do_nanosleep */
2261 hrtimer_init_sleeper(&t, current);
2262 do {
2263 set_current_state(TASK_INTERRUPTIBLE);
2264 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002265
2266 if (likely(t.task))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002267 schedule();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002268
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002269 hrtimer_cancel(&t.timer);
2270 } while (t.task && pkt_dev->running && !signal_pending(current));
2271 __set_current_state(TASK_RUNNING);
Daniel Borkmann398f3822012-10-28 08:27:19 +00002272 end_time = ktime_get();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002273 }
Stephen Hemmingeref879792009-09-22 19:41:43 +00002274
2275 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
Daniel Turull07a0f0f2010-06-10 23:08:11 -07002276 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002277}
2278
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002279static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2280{
Bogdan Hamciuc879c72202015-07-29 12:45:58 +03002281 pkt_dev->pkt_overhead = LL_RESERVED_SPACE(pkt_dev->odev);
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002282 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2283 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2284 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2285}
2286
Stephen Hemminger648fda72009-08-27 13:55:07 +00002287static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002288{
Stephen Hemminger648fda72009-08-27 13:55:07 +00002289 return !!(pkt_dev->flows[flow].flags & F_INIT);
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002290}
2291
2292static inline int f_pick(struct pktgen_dev *pkt_dev)
2293{
2294 int flow = pkt_dev->curfl;
2295
2296 if (pkt_dev->flags & F_FLOW_SEQ) {
2297 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2298 /* reset time */
2299 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002300 pkt_dev->flows[flow].flags = 0;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002301 pkt_dev->curfl += 1;
2302 if (pkt_dev->curfl >= pkt_dev->cflows)
2303 pkt_dev->curfl = 0; /*reset */
2304 }
2305 } else {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002306 flow = prandom_u32() % pkt_dev->cflows;
Robert Olsson1211a642008-08-05 18:44:26 -07002307 pkt_dev->curfl = flow;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002308
Robert Olsson1211a642008-08-05 18:44:26 -07002309 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002310 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002311 pkt_dev->flows[flow].flags = 0;
2312 }
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002313 }
2314
2315 return pkt_dev->curfl;
2316}
2317
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002318
2319#ifdef CONFIG_XFRM
2320/* If there was already an IPSEC SA, we keep it as is, else
2321 * we go look for it ...
2322*/
Jamal Hadi Salimbd557752010-02-22 16:20:22 -08002323#define DUMMY_MARK 0
Adrian Bunkfea1ab02007-07-30 18:04:09 -07002324static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002325{
2326 struct xfrm_state *x = pkt_dev->flows[flow].x;
Cong Wang4e58a022013-01-28 19:55:53 +00002327 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002328 if (!x) {
Fan Duc4549972014-01-03 11:18:32 +08002329
2330 if (pkt_dev->spi) {
2331 /* We need as quick as possible to find the right SA
2332 * Searching with minimum criteria to archieve this.
2333 */
2334 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2335 } else {
2336 /* slow path: we dont already have xfrm_state */
2337 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2338 (xfrm_address_t *)&pkt_dev->cur_daddr,
2339 (xfrm_address_t *)&pkt_dev->cur_saddr,
2340 AF_INET,
2341 pkt_dev->ipsmode,
2342 pkt_dev->ipsproto, 0);
2343 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002344 if (x) {
2345 pkt_dev->flows[flow].x = x;
2346 set_pkt_overhead(pkt_dev);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002347 pkt_dev->pkt_overhead += x->props.header_len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002348 }
2349
2350 }
2351}
2352#endif
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002353static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2354{
Robert Olssone6fce5b2008-08-07 02:23:01 -07002355
2356 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2357 pkt_dev->cur_queue_map = smp_processor_id();
2358
Eric Dumazet896a7cf2009-10-02 20:24:59 +00002359 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002360 __u16 t;
2361 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002362 t = prandom_u32() %
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002363 (pkt_dev->queue_map_max -
2364 pkt_dev->queue_map_min + 1)
2365 + pkt_dev->queue_map_min;
2366 } else {
2367 t = pkt_dev->cur_queue_map + 1;
2368 if (t > pkt_dev->queue_map_max)
2369 t = pkt_dev->queue_map_min;
2370 }
2371 pkt_dev->cur_queue_map = t;
2372 }
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002373 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002374}
2375
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376/* Increment/randomize headers according to flags and current values
2377 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2378 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002379static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2380{
2381 __u32 imn;
2382 __u32 imx;
2383 int flow = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002385 if (pkt_dev->cflows)
2386 flow = f_pick(pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387
2388 /* Deal with source MAC */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002389 if (pkt_dev->src_mac_count > 1) {
2390 __u32 mc;
2391 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392
Luiz Capitulino222f1802006-03-20 22:16:13 -08002393 if (pkt_dev->flags & F_MACSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002394 mc = prandom_u32() % pkt_dev->src_mac_count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002395 else {
2396 mc = pkt_dev->cur_src_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002397 if (pkt_dev->cur_src_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002398 pkt_dev->src_mac_count)
2399 pkt_dev->cur_src_mac_offset = 0;
2400 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401
Luiz Capitulino222f1802006-03-20 22:16:13 -08002402 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2403 pkt_dev->hh[11] = tmp;
2404 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2405 pkt_dev->hh[10] = tmp;
2406 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2407 pkt_dev->hh[9] = tmp;
2408 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2409 pkt_dev->hh[8] = tmp;
2410 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2411 pkt_dev->hh[7] = tmp;
2412 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413
Luiz Capitulino222f1802006-03-20 22:16:13 -08002414 /* Deal with Destination MAC */
2415 if (pkt_dev->dst_mac_count > 1) {
2416 __u32 mc;
2417 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418
Luiz Capitulino222f1802006-03-20 22:16:13 -08002419 if (pkt_dev->flags & F_MACDST_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002420 mc = prandom_u32() % pkt_dev->dst_mac_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421
Luiz Capitulino222f1802006-03-20 22:16:13 -08002422 else {
2423 mc = pkt_dev->cur_dst_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002424 if (pkt_dev->cur_dst_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002425 pkt_dev->dst_mac_count) {
2426 pkt_dev->cur_dst_mac_offset = 0;
2427 }
2428 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002429
Luiz Capitulino222f1802006-03-20 22:16:13 -08002430 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2431 pkt_dev->hh[5] = tmp;
2432 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2433 pkt_dev->hh[4] = tmp;
2434 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2435 pkt_dev->hh[3] = tmp;
2436 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2437 pkt_dev->hh[2] = tmp;
2438 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2439 pkt_dev->hh[1] = tmp;
2440 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002441
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002442 if (pkt_dev->flags & F_MPLS_RND) {
Eric Dumazet95c96172012-04-15 05:58:06 +00002443 unsigned int i;
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002444 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002445 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2446 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002447 ((__force __be32)prandom_u32() &
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002448 htonl(0x000fffff));
2449 }
2450
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002451 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002452 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002453 }
2454
2455 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002456 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002457 }
2458
Luiz Capitulino222f1802006-03-20 22:16:13 -08002459 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2460 if (pkt_dev->flags & F_UDPSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002461 pkt_dev->cur_udp_src = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002462 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2463 + pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002464
Luiz Capitulino222f1802006-03-20 22:16:13 -08002465 else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002466 pkt_dev->cur_udp_src++;
2467 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2468 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002469 }
2470 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002471
Luiz Capitulino222f1802006-03-20 22:16:13 -08002472 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2473 if (pkt_dev->flags & F_UDPDST_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002474 pkt_dev->cur_udp_dst = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002475 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2476 + pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002477 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002478 pkt_dev->cur_udp_dst++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002479 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002481 }
2482 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002483
2484 if (!(pkt_dev->flags & F_IPV6)) {
2485
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002486 imn = ntohl(pkt_dev->saddr_min);
2487 imx = ntohl(pkt_dev->saddr_max);
2488 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002489 __u32 t;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002490 if (pkt_dev->flags & F_IPSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002491 t = prandom_u32() % (imx - imn) + imn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002492 else {
2493 t = ntohl(pkt_dev->cur_saddr);
2494 t++;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002495 if (t > imx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002496 t = imn;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002497
Linus Torvalds1da177e2005-04-16 15:20:36 -07002498 }
2499 pkt_dev->cur_saddr = htonl(t);
2500 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002501
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002502 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002503 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2504 } else {
Al Viro252e3342006-11-14 20:48:11 -08002505 imn = ntohl(pkt_dev->daddr_min);
2506 imx = ntohl(pkt_dev->daddr_max);
2507 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002508 __u32 t;
Al Viro252e3342006-11-14 20:48:11 -08002509 __be32 s;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510 if (pkt_dev->flags & F_IPDST_RND) {
2511
Akinobu Mita70e3ba72013-04-29 16:21:41 -07002512 do {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002513 t = prandom_u32() %
2514 (imx - imn) + imn;
Al Viro252e3342006-11-14 20:48:11 -08002515 s = htonl(t);
Akinobu Mita70e3ba72013-04-29 16:21:41 -07002516 } while (ipv4_is_loopback(s) ||
2517 ipv4_is_multicast(s) ||
2518 ipv4_is_lbcast(s) ||
2519 ipv4_is_zeronet(s) ||
2520 ipv4_is_local_multicast(s));
Al Viro252e3342006-11-14 20:48:11 -08002521 pkt_dev->cur_daddr = s;
2522 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002523 t = ntohl(pkt_dev->cur_daddr);
2524 t++;
2525 if (t > imx) {
2526 t = imn;
2527 }
2528 pkt_dev->cur_daddr = htonl(t);
2529 }
2530 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002531 if (pkt_dev->cflows) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002532 pkt_dev->flows[flow].flags |= F_INIT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002533 pkt_dev->flows[flow].cur_daddr =
2534 pkt_dev->cur_daddr;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002535#ifdef CONFIG_XFRM
2536 if (pkt_dev->flags & F_IPSEC_ON)
2537 get_ipsec_sa(pkt_dev, flow);
2538#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539 pkt_dev->nflows++;
2540 }
2541 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002542 } else { /* IPV6 * */
2543
Joe Perches06e30412012-10-18 17:55:31 +00002544 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002545 int i;
2546
2547 /* Only random destinations yet */
2548
Luiz Capitulino222f1802006-03-20 22:16:13 -08002549 for (i = 0; i < 4; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002550 pkt_dev->cur_in6_daddr.s6_addr32[i] =
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002551 (((__force __be32)prandom_u32() |
Luiz Capitulino222f1802006-03-20 22:16:13 -08002552 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2553 pkt_dev->max_in6_daddr.s6_addr32[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002555 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002556 }
2557
Luiz Capitulino222f1802006-03-20 22:16:13 -08002558 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2559 __u32 t;
2560 if (pkt_dev->flags & F_TXSIZE_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002561 t = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002562 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2563 + pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002564 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002565 t = pkt_dev->cur_pkt_size + 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002566 if (t > pkt_dev->max_pkt_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002567 t = pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002568 }
2569 pkt_dev->cur_pkt_size = t;
2570 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002571
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002572 set_cur_queue_map(pkt_dev);
Robert Olsson45b270f2007-08-28 15:45:55 -07002573
Linus Torvalds1da177e2005-04-16 15:20:36 -07002574 pkt_dev->flows[flow].count++;
2575}
2576
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002577
2578#ifdef CONFIG_XFRM
Fengguang Wu5537a052014-01-06 11:00:07 +01002579static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
Fan Ducf93d472014-01-03 11:18:31 +08002580
2581 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2582};
2583
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002584static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2585{
2586 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2587 int err = 0;
Fan Du6de9ace2014-01-03 11:18:28 +08002588 struct net *net = dev_net(pkt_dev->odev);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002589
2590 if (!x)
2591 return 0;
2592 /* XXX: we dont support tunnel mode for now until
2593 * we resolve the dst issue */
Fan Ducf93d472014-01-03 11:18:31 +08002594 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002595 return 0;
2596
Fan Ducf93d472014-01-03 11:18:31 +08002597 /* But when user specify an valid SPI, transformation
2598 * supports both transport/tunnel mode + ESP/AH type.
2599 */
2600 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2601 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2602
2603 rcu_read_lock_bh();
Herbert Xu13996372007-10-17 21:35:51 -07002604 err = x->outer_mode->output(x, skb);
Fan Ducf93d472014-01-03 11:18:31 +08002605 rcu_read_unlock_bh();
Fan Du6de9ace2014-01-03 11:18:28 +08002606 if (err) {
2607 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002608 goto error;
Fan Du6de9ace2014-01-03 11:18:28 +08002609 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002610 err = x->type->output(x, skb);
Fan Du6de9ace2014-01-03 11:18:28 +08002611 if (err) {
2612 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002613 goto error;
Fan Du6de9ace2014-01-03 11:18:28 +08002614 }
Fan Du0af0a412014-01-03 11:18:27 +08002615 spin_lock_bh(&x->lock);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002616 x->curlft.bytes += skb->len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002617 x->curlft.packets++;
Fan Du0af0a412014-01-03 11:18:27 +08002618 spin_unlock_bh(&x->lock);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002619error:
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002620 return err;
2621}
2622
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002623static void free_SAs(struct pktgen_dev *pkt_dev)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002624{
2625 if (pkt_dev->cflows) {
2626 /* let go of the SAs if we have them */
Paul Gortmakerd6182222010-10-18 12:14:44 +00002627 int i;
2628 for (i = 0; i < pkt_dev->cflows; i++) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002629 struct xfrm_state *x = pkt_dev->flows[i].x;
2630 if (x) {
2631 xfrm_state_put(x);
2632 pkt_dev->flows[i].x = NULL;
2633 }
2634 }
2635 }
2636}
2637
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002638static int process_ipsec(struct pktgen_dev *pkt_dev,
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002639 struct sk_buff *skb, __be16 protocol)
2640{
2641 if (pkt_dev->flags & F_IPSEC_ON) {
2642 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2643 int nhead = 0;
2644 if (x) {
Eric Dumazetd4969582015-05-25 16:06:37 -07002645 struct ethhdr *eth;
fan.du38682042013-12-01 16:28:48 +08002646 struct iphdr *iph;
Eric Dumazetd4969582015-05-25 16:06:37 -07002647 int ret;
fan.du38682042013-12-01 16:28:48 +08002648
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002649 nhead = x->props.header_len - skb_headroom(skb);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002650 if (nhead > 0) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002651 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2652 if (ret < 0) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002653 pr_err("Error expanding ipsec packet %d\n",
2654 ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002655 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002656 }
2657 }
2658
2659 /* ipsec is not expecting ll header */
2660 skb_pull(skb, ETH_HLEN);
2661 ret = pktgen_output_ipsec(skb, pkt_dev);
2662 if (ret) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002663 pr_err("Error creating ipsec packet %d\n", ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002664 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002665 }
2666 /* restore ll */
Eric Dumazetd4969582015-05-25 16:06:37 -07002667 eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
2668 memcpy(eth, pkt_dev->hh, 2 * ETH_ALEN);
2669 eth->h_proto = protocol;
fan.du38682042013-12-01 16:28:48 +08002670
2671 /* Update IPv4 header len as well as checksum value */
2672 iph = ip_hdr(skb);
2673 iph->tot_len = htons(skb->len - ETH_HLEN);
2674 ip_send_check(iph);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002675 }
2676 }
2677 return 1;
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002678err:
2679 kfree_skb(skb);
2680 return 0;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002681}
2682#endif
2683
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002684static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2685{
Eric Dumazet95c96172012-04-15 05:58:06 +00002686 unsigned int i;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002687 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002688 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002689
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002690 mpls--;
2691 *mpls |= MPLS_STACK_BOTTOM;
2692}
2693
Al Viro0f37c602006-11-03 03:49:56 -08002694static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2695 unsigned int prio)
2696{
2697 return htons(id | (cfi << 12) | (prio << 13));
2698}
2699
Eric Dumazet26ad7872011-01-25 13:26:05 -08002700static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2701 int datalen)
2702{
2703 struct timeval timestamp;
2704 struct pktgen_hdr *pgh;
2705
2706 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2707 datalen -= sizeof(*pgh);
2708
2709 if (pkt_dev->nfrags <= 0) {
Daniel Turull05aebe22011-03-14 13:47:40 -07002710 memset(skb_put(skb, datalen), 0, datalen);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002711 } else {
2712 int frags = pkt_dev->nfrags;
2713 int i, len;
amit salecha7d36a992011-04-22 16:22:20 +00002714 int frag_len;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002715
2716
2717 if (frags > MAX_SKB_FRAGS)
2718 frags = MAX_SKB_FRAGS;
2719 len = datalen - frags * PAGE_SIZE;
2720 if (len > 0) {
2721 memset(skb_put(skb, len), 0, len);
2722 datalen = frags * PAGE_SIZE;
2723 }
2724
2725 i = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002726 frag_len = (datalen/frags) < PAGE_SIZE ?
2727 (datalen/frags) : PAGE_SIZE;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002728 while (datalen > 0) {
2729 if (unlikely(!pkt_dev->page)) {
2730 int node = numa_node_id();
2731
2732 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2733 node = pkt_dev->node;
2734 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2735 if (!pkt_dev->page)
2736 break;
2737 }
Ian Campbella0bec1c2011-10-18 22:55:11 +00002738 get_page(pkt_dev->page);
Ian Campbellea2ab692011-08-22 23:44:58 +00002739 skb_frag_set_page(skb, i, pkt_dev->page);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002740 skb_shinfo(skb)->frags[i].page_offset = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002741 /*last fragment, fill rest of data*/
2742 if (i == (frags - 1))
Eric Dumazet9e903e02011-10-18 21:00:24 +00002743 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2744 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
amit salecha7d36a992011-04-22 16:22:20 +00002745 else
Eric Dumazet9e903e02011-10-18 21:00:24 +00002746 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2747 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2748 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2749 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002750 i++;
2751 skb_shinfo(skb)->nr_frags = i;
2752 }
Eric Dumazet26ad7872011-01-25 13:26:05 -08002753 }
2754
2755 /* Stamp the time, and sequence number,
2756 * convert them to network byte order
2757 */
2758 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2759 pgh->seq_num = htonl(pkt_dev->seq_num);
2760
Jesper Dangaard Brouerafb84b622014-08-28 18:14:47 +02002761 if (pkt_dev->flags & F_NO_TIMESTAMP) {
2762 pgh->tv_sec = 0;
2763 pgh->tv_usec = 0;
2764 } else {
2765 do_gettimeofday(&timestamp);
2766 pgh->tv_sec = htonl(timestamp.tv_sec);
2767 pgh->tv_usec = htonl(timestamp.tv_usec);
2768 }
Eric Dumazet26ad7872011-01-25 13:26:05 -08002769}
2770
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002771static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2772 struct pktgen_dev *pkt_dev,
2773 unsigned int extralen)
2774{
2775 struct sk_buff *skb = NULL;
2776 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2777 pkt_dev->pkt_overhead;
2778
2779 if (pkt_dev->flags & F_NODE) {
2780 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2781
2782 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2783 if (likely(skb)) {
2784 skb_reserve(skb, NET_SKB_PAD);
2785 skb->dev = dev;
2786 }
2787 } else {
2788 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2789 }
John Fastabend3de03592016-01-10 21:38:44 -08002790
2791 if (likely(skb))
2792 skb_reserve(skb, LL_RESERVED_SPACE(dev));
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002793
2794 return skb;
2795}
2796
Luiz Capitulino222f1802006-03-20 22:16:13 -08002797static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2798 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002799{
2800 struct sk_buff *skb = NULL;
2801 __u8 *eth;
2802 struct udphdr *udph;
2803 int datalen, iplen;
2804 struct iphdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002805 __be16 protocol = htons(ETH_P_IP);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002806 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002807 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2808 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2809 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2810 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002811 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002812
2813 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002814 protocol = htons(ETH_P_MPLS_UC);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002815
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002816 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002817 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002818
Robert Olsson64053be2005-06-26 15:27:10 -07002819 /* Update any of the values, used when we're incrementing various
2820 * fields.
2821 */
2822 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002823 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002824
David S. Miller7ac54592006-01-18 14:19:10 -08002825 datalen = (odev->hard_header_len + 16) & ~0xf;
Robert Olssone99b99b2010-03-18 22:44:30 +00002826
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002827 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002828 if (!skb) {
2829 sprintf(pkt_dev->result, "No memory");
2830 return NULL;
2831 }
2832
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002833 prefetchw(skb->data);
David S. Miller7ac54592006-01-18 14:19:10 -08002834 skb_reserve(skb, datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002835
2836 /* Reserve for ethernet and IP header */
2837 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002838 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2839 if (pkt_dev->nr_labels)
2840 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002841
2842 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002843 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002844 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002845 *svlan_tci = build_tci(pkt_dev->svlan_id,
2846 pkt_dev->svlan_cfi,
2847 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002848 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002849 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002850 }
2851 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002852 *vlan_tci = build_tci(pkt_dev->vlan_id,
2853 pkt_dev->vlan_cfi,
2854 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002855 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002856 *vlan_encapsulated_proto = htons(ETH_P_IP);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002857 }
2858
Thomas Graf525cebe2013-06-03 11:49:23 +00002859 skb_set_mac_header(skb, 0);
2860 skb_set_network_header(skb, skb->len);
2861 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2862
2863 skb_set_transport_header(skb, skb->len);
2864 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002865 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002866 skb->priority = pkt_dev->skb_priority;
2867
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868 memcpy(eth, pkt_dev->hh, 12);
Al Viro252e3342006-11-14 20:48:11 -08002869 *(__be16 *) & eth[12] = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002870
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002871 /* Eth + IPh + UDPh + mpls */
2872 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002873 pkt_dev->pkt_overhead;
Nishank Trivedi6af773e2012-09-12 13:32:49 +00002874 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002875 datalen = sizeof(struct pktgen_hdr);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002876
Linus Torvalds1da177e2005-04-16 15:20:36 -07002877 udph->source = htons(pkt_dev->cur_udp_src);
2878 udph->dest = htons(pkt_dev->cur_udp_dst);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002879 udph->len = htons(datalen + 8); /* DATA + udphdr */
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002880 udph->check = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881
2882 iph->ihl = 5;
2883 iph->version = 4;
2884 iph->ttl = 32;
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002885 iph->tos = pkt_dev->tos;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002886 iph->protocol = IPPROTO_UDP; /* UDP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002887 iph->saddr = pkt_dev->cur_saddr;
2888 iph->daddr = pkt_dev->cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -07002889 iph->id = htons(pkt_dev->ip_id);
2890 pkt_dev->ip_id++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002891 iph->frag_off = 0;
2892 iplen = 20 + 8 + datalen;
2893 iph->tot_len = htons(iplen);
Thomas Graf03c633e2013-07-25 14:08:04 +02002894 ip_send_check(iph);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002895 skb->protocol = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002896 skb->dev = odev;
2897 skb->pkt_type = PACKET_HOST;
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002898
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01002899 pktgen_finalize_skb(pkt_dev, skb, datalen);
2900
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002901 if (!(pkt_dev->flags & F_UDPCSUM)) {
2902 skb->ip_summed = CHECKSUM_NONE;
Tom Herbertc8cd0982015-12-14 11:19:44 -08002903 } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM)) {
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002904 skb->ip_summed = CHECKSUM_PARTIAL;
2905 skb->csum = 0;
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01002906 udp4_hwcsum(skb, iph->saddr, iph->daddr);
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002907 } else {
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01002908 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0);
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002909
2910 /* add protocol-dependent pseudo-header */
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01002911 udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002912 datalen + 8, IPPROTO_UDP, csum);
2913
2914 if (udph->check == 0)
2915 udph->check = CSUM_MANGLED_0;
2916 }
2917
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002918#ifdef CONFIG_XFRM
2919 if (!process_ipsec(pkt_dev, skb, protocol))
2920 return NULL;
2921#endif
2922
Linus Torvalds1da177e2005-04-16 15:20:36 -07002923 return skb;
2924}
2925
Luiz Capitulino222f1802006-03-20 22:16:13 -08002926static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2927 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002928{
2929 struct sk_buff *skb = NULL;
2930 __u8 *eth;
2931 struct udphdr *udph;
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002932 int datalen, udplen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002933 struct ipv6hdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002934 __be16 protocol = htons(ETH_P_IPV6);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002935 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002936 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2937 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2938 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2939 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002940 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002941
2942 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002943 protocol = htons(ETH_P_MPLS_UC);
Robert Olsson64053be2005-06-26 15:27:10 -07002944
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002945 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002946 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002947
Robert Olsson64053be2005-06-26 15:27:10 -07002948 /* Update any of the values, used when we're incrementing various
2949 * fields.
2950 */
2951 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002952 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002953
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002954 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002955 if (!skb) {
2956 sprintf(pkt_dev->result, "No memory");
2957 return NULL;
2958 }
2959
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002960 prefetchw(skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002961 skb_reserve(skb, 16);
2962
2963 /* Reserve for ethernet and IP header */
2964 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002965 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2966 if (pkt_dev->nr_labels)
2967 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002968
2969 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002970 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002971 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002972 *svlan_tci = build_tci(pkt_dev->svlan_id,
2973 pkt_dev->svlan_cfi,
2974 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002975 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002976 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002977 }
2978 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002979 *vlan_tci = build_tci(pkt_dev->vlan_id,
2980 pkt_dev->vlan_cfi,
2981 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002982 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002983 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002984 }
2985
Thomas Graf525cebe2013-06-03 11:49:23 +00002986 skb_set_mac_header(skb, 0);
2987 skb_set_network_header(skb, skb->len);
2988 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2989
2990 skb_set_transport_header(skb, skb->len);
2991 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002992 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002993 skb->priority = pkt_dev->skb_priority;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002994
Linus Torvalds1da177e2005-04-16 15:20:36 -07002995 memcpy(eth, pkt_dev->hh, 12);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002996 *(__be16 *) &eth[12] = protocol;
Robert Olsson64053be2005-06-26 15:27:10 -07002997
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002998 /* Eth + IPh + UDPh + mpls */
2999 datalen = pkt_dev->cur_pkt_size - 14 -
3000 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07003001 pkt_dev->pkt_overhead;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003002
Amerigo Wang5aa8b572012-10-09 17:48:16 +00003003 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003004 datalen = sizeof(struct pktgen_hdr);
Joe Perchese87cc472012-05-13 21:56:26 +00003005 net_info_ratelimited("increased datalen to %d\n", datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003006 }
3007
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003008 udplen = datalen + sizeof(struct udphdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003009 udph->source = htons(pkt_dev->cur_udp_src);
3010 udph->dest = htons(pkt_dev->cur_udp_dst);
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003011 udph->len = htons(udplen);
3012 udph->check = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003013
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08003014 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003015
Francesco Fondelli1ca77682006-09-27 16:32:03 -07003016 if (pkt_dev->traffic_class) {
3017 /* Version + traffic class + flow (0) */
Al Viro252e3342006-11-14 20:48:11 -08003018 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
Francesco Fondelli1ca77682006-09-27 16:32:03 -07003019 }
3020
Linus Torvalds1da177e2005-04-16 15:20:36 -07003021 iph->hop_limit = 32;
3022
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003023 iph->payload_len = htons(udplen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003024 iph->nexthdr = IPPROTO_UDP;
3025
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00003026 iph->daddr = pkt_dev->cur_in6_daddr;
3027 iph->saddr = pkt_dev->cur_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003028
Steven Whitehouseca6549a2006-03-23 01:10:26 -08003029 skb->protocol = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003030 skb->dev = odev;
3031 skb->pkt_type = PACKET_HOST;
3032
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01003033 pktgen_finalize_skb(pkt_dev, skb, datalen);
3034
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003035 if (!(pkt_dev->flags & F_UDPCSUM)) {
3036 skb->ip_summed = CHECKSUM_NONE;
Tom Herbertc8cd0982015-12-14 11:19:44 -08003037 } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IPV6_CSUM)) {
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003038 skb->ip_summed = CHECKSUM_PARTIAL;
3039 skb->csum_start = skb_transport_header(skb) - skb->head;
3040 skb->csum_offset = offsetof(struct udphdr, check);
3041 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
3042 } else {
Sabrina Dubroca7744b5f2015-02-04 23:08:50 +01003043 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0);
Thomas Grafc26bf4a2013-07-25 18:12:18 +02003044
3045 /* add protocol-dependent pseudo-header */
3046 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
3047
3048 if (udph->check == 0)
3049 udph->check = CSUM_MANGLED_0;
3050 }
3051
Linus Torvalds1da177e2005-04-16 15:20:36 -07003052 return skb;
3053}
3054
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00003055static struct sk_buff *fill_packet(struct net_device *odev,
3056 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003057{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003058 if (pkt_dev->flags & F_IPV6)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059 return fill_packet_ipv6(odev, pkt_dev);
3060 else
3061 return fill_packet_ipv4(odev, pkt_dev);
3062}
3063
Luiz Capitulino222f1802006-03-20 22:16:13 -08003064static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003065{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003066 pkt_dev->seq_num = 1;
3067 pkt_dev->idle_acc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003068 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003069 pkt_dev->tx_bytes = 0;
3070 pkt_dev->errors = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003071}
3072
3073/* Set up structure for sending pkts, clear counters */
3074
3075static void pktgen_run(struct pktgen_thread *t)
3076{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003077 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003078 int started = 0;
3079
Joe Perchesf9467ea2010-06-21 12:29:14 +00003080 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003081
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003082 rcu_read_lock();
3083 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003084
3085 /*
3086 * setup odev and create initial packet.
3087 */
3088 pktgen_setup_inject(pkt_dev);
3089
Luiz Capitulino222f1802006-03-20 22:16:13 -08003090 if (pkt_dev->odev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003091 pktgen_clear_counters(pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003092 pkt_dev->skb = NULL;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003093 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003094
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07003095 set_pkt_overhead(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003096
Linus Torvalds1da177e2005-04-16 15:20:36 -07003097 strcpy(pkt_dev->result, "Starting");
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003098 pkt_dev->running = 1; /* Cranke yeself! */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003099 started++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003100 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003101 strcpy(pkt_dev->result, "Error starting");
3102 }
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003103 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003104 if (started)
3105 t->control &= ~(T_STOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003106}
3107
Cong Wang4e58a022013-01-28 19:55:53 +00003108static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003109{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003110 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003111
Joe Perchesf9467ea2010-06-21 12:29:14 +00003112 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003113
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003114 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003115
Cong Wang4e58a022013-01-28 19:55:53 +00003116 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003117 t->control |= T_STOP;
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003118
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003119 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003120}
3121
Stephen Hemminger648fda72009-08-27 13:55:07 +00003122static int thread_is_running(const struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003123{
Stephen Hemminger648fda72009-08-27 13:55:07 +00003124 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003125
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003126 rcu_read_lock();
3127 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
3128 if (pkt_dev->running) {
3129 rcu_read_unlock();
Stephen Hemminger648fda72009-08-27 13:55:07 +00003130 return 1;
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003131 }
3132 rcu_read_unlock();
Stephen Hemminger648fda72009-08-27 13:55:07 +00003133 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003134}
3135
Luiz Capitulino222f1802006-03-20 22:16:13 -08003136static int pktgen_wait_thread_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003137{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003138 while (thread_is_running(t)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003139
Luiz Capitulino222f1802006-03-20 22:16:13 -08003140 msleep_interruptible(100);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003141
Luiz Capitulino222f1802006-03-20 22:16:13 -08003142 if (signal_pending(current))
3143 goto signal;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003144 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003145 return 1;
3146signal:
3147 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003148}
3149
Cong Wang4e58a022013-01-28 19:55:53 +00003150static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003151{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003152 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003153 int sig = 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003154
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003155 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003156
Cong Wang4e58a022013-01-28 19:55:53 +00003157 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003158 sig = pktgen_wait_thread_run(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003159 if (sig == 0)
3160 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003161 }
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003162
3163 if (sig == 0)
Cong Wang4e58a022013-01-28 19:55:53 +00003164 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003165 t->control |= (T_STOP);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003166
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003167 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003168 return sig;
3169}
3170
Cong Wang4e58a022013-01-28 19:55:53 +00003171static void pktgen_run_all_threads(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003172{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003173 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003174
Joe Perchesf9467ea2010-06-21 12:29:14 +00003175 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003176
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003177 mutex_lock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003178
Cong Wang4e58a022013-01-28 19:55:53 +00003179 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003180 t->control |= (T_RUN);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003181
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003182 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003183
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003184 /* Propagate thread->control */
3185 schedule_timeout_interruptible(msecs_to_jiffies(125));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003186
Cong Wang4e58a022013-01-28 19:55:53 +00003187 pktgen_wait_all_threads_run(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003188}
3189
Cong Wang4e58a022013-01-28 19:55:53 +00003190static void pktgen_reset_all_threads(struct pktgen_net *pn)
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003191{
3192 struct pktgen_thread *t;
3193
Joe Perchesf9467ea2010-06-21 12:29:14 +00003194 func_enter();
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003195
3196 mutex_lock(&pktgen_thread_lock);
3197
Cong Wang4e58a022013-01-28 19:55:53 +00003198 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003199 t->control |= (T_REMDEVALL);
3200
3201 mutex_unlock(&pktgen_thread_lock);
3202
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003203 /* Propagate thread->control */
3204 schedule_timeout_interruptible(msecs_to_jiffies(125));
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003205
Cong Wang4e58a022013-01-28 19:55:53 +00003206 pktgen_wait_all_threads_run(pn);
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003207}
3208
Linus Torvalds1da177e2005-04-16 15:20:36 -07003209static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3210{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003211 __u64 bps, mbps, pps;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003212 char *p = pkt_dev->result;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003213 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3214 pkt_dev->started_at);
3215 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003216
Daniel Turull03a14ab2011-03-09 14:11:00 -08003217 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003218 (unsigned long long)ktime_to_us(elapsed),
3219 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3220 (unsigned long long)ktime_to_us(idle),
Luiz Capitulino222f1802006-03-20 22:16:13 -08003221 (unsigned long long)pkt_dev->sofar,
3222 pkt_dev->cur_pkt_size, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003223
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003224 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3225 ktime_to_ns(elapsed));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003226
Luiz Capitulino222f1802006-03-20 22:16:13 -08003227 bps = pps * 8 * pkt_dev->cur_pkt_size;
3228
3229 mbps = bps;
3230 do_div(mbps, 1000000);
3231 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3232 (unsigned long long)pps,
3233 (unsigned long long)mbps,
3234 (unsigned long long)bps,
3235 (unsigned long long)pkt_dev->errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003236}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003237
3238/* Set stopped-at timer, remove from running list, do counters & statistics */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003239static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003240{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003241 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003242
Luiz Capitulino222f1802006-03-20 22:16:13 -08003243 if (!pkt_dev->running) {
Joe Perches294a0b72014-09-09 21:17:30 -07003244 pr_warn("interface: %s is already stopped\n",
3245 pkt_dev->odevname);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003246 return -EINVAL;
3247 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003248
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003249 pkt_dev->running = 0;
Stephen Hemminger3bda06a2009-08-27 13:55:10 +00003250 kfree_skb(pkt_dev->skb);
3251 pkt_dev->skb = NULL;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003252 pkt_dev->stopped_at = ktime_get();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003253
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003254 show_results(pkt_dev, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003255
Luiz Capitulino222f1802006-03-20 22:16:13 -08003256 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003257}
3258
Luiz Capitulino222f1802006-03-20 22:16:13 -08003259static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003260{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003261 struct pktgen_dev *pkt_dev, *best = NULL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003262
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003263 rcu_read_lock();
3264 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003265 if (!pkt_dev->running)
Luiz Capitulino222f1802006-03-20 22:16:13 -08003266 continue;
3267 if (best == NULL)
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003268 best = pkt_dev;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003269 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003270 best = pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003271 }
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003272 rcu_read_unlock();
3273
Luiz Capitulino222f1802006-03-20 22:16:13 -08003274 return best;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003275}
3276
Luiz Capitulino222f1802006-03-20 22:16:13 -08003277static void pktgen_stop(struct pktgen_thread *t)
3278{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003279 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003280
Joe Perchesf9467ea2010-06-21 12:29:14 +00003281 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003282
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003283 rcu_read_lock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003284
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003285 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003286 pktgen_stop_device(pkt_dev);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003287 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003288
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003289 rcu_read_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003290}
3291
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003292/*
3293 * one of our devices needs to be removed - find it
3294 * and remove it
3295 */
3296static void pktgen_rem_one_if(struct pktgen_thread *t)
3297{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003298 struct list_head *q, *n;
3299 struct pktgen_dev *cur;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003300
Joe Perchesf9467ea2010-06-21 12:29:14 +00003301 func_enter();
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003302
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003303 list_for_each_safe(q, n, &t->if_list) {
3304 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003305
Luiz Capitulino222f1802006-03-20 22:16:13 -08003306 if (!cur->removal_mark)
3307 continue;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003308
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003309 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003310 cur->skb = NULL;
3311
3312 pktgen_remove_device(t, cur);
3313
3314 break;
3315 }
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003316}
3317
Luiz Capitulino222f1802006-03-20 22:16:13 -08003318static void pktgen_rem_all_ifs(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003319{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003320 struct list_head *q, *n;
3321 struct pktgen_dev *cur;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003322
Joe Perchesf9467ea2010-06-21 12:29:14 +00003323 func_enter();
3324
Luiz Capitulino222f1802006-03-20 22:16:13 -08003325 /* Remove all devices, free mem */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003326
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003327 list_for_each_safe(q, n, &t->if_list) {
3328 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003329
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003330 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003331 cur->skb = NULL;
3332
Linus Torvalds1da177e2005-04-16 15:20:36 -07003333 pktgen_remove_device(t, cur);
3334 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003335}
3336
Luiz Capitulino222f1802006-03-20 22:16:13 -08003337static void pktgen_rem_thread(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003338{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003339 /* Remove from the thread list */
Cong Wang4e58a022013-01-28 19:55:53 +00003340 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003341}
3342
Stephen Hemmingeref879792009-09-22 19:41:43 +00003343static void pktgen_resched(struct pktgen_dev *pkt_dev)
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003344{
Daniel Borkmann398f3822012-10-28 08:27:19 +00003345 ktime_t idle_start = ktime_get();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003346 schedule();
Daniel Borkmann398f3822012-10-28 08:27:19 +00003347 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003348}
3349
Stephen Hemmingeref879792009-09-22 19:41:43 +00003350static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3351{
Daniel Borkmann398f3822012-10-28 08:27:19 +00003352 ktime_t idle_start = ktime_get();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003353
3354 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3355 if (signal_pending(current))
3356 break;
3357
3358 if (need_resched())
3359 pktgen_resched(pkt_dev);
3360 else
3361 cpu_relax();
3362 }
Daniel Borkmann398f3822012-10-28 08:27:19 +00003363 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
Stephen Hemmingeref879792009-09-22 19:41:43 +00003364}
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003365
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00003366static void pktgen_xmit(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003367{
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07003368 unsigned int burst = ACCESS_ONCE(pkt_dev->burst);
Stephen Hemminger00829822008-11-20 20:14:53 -08003369 struct net_device *odev = pkt_dev->odev;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003370 struct netdev_queue *txq;
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02003371 struct sk_buff *skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003372 int ret;
3373
Stephen Hemmingeref879792009-09-22 19:41:43 +00003374 /* If device is offline, then don't send */
3375 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3376 pktgen_stop_device(pkt_dev);
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003377 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003378 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003379
Stephen Hemmingeref879792009-09-22 19:41:43 +00003380 /* This is max DELAY, this has special meaning of
3381 * "never transmit"
3382 */
3383 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
Daniel Borkmann398f3822012-10-28 08:27:19 +00003384 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003385 return;
3386 }
3387
3388 /* If no skb or clone count exhausted then get new one */
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003389 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3390 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3391 /* build a new pkt */
3392 kfree_skb(pkt_dev->skb);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003393
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003394 pkt_dev->skb = fill_packet(odev, pkt_dev);
3395 if (pkt_dev->skb == NULL) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003396 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003397 schedule();
3398 pkt_dev->clone_count--; /* back out increment, OOM */
3399 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003400 }
Eric Dumazetbaac8562009-11-05 21:04:32 -08003401 pkt_dev->last_pkt_size = pkt_dev->skb->len;
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003402 pkt_dev->clone_count = 0; /* reset counter */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003403 }
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003404
Stephen Hemmingeref879792009-09-22 19:41:43 +00003405 if (pkt_dev->delay && pkt_dev->last_ok)
3406 spin(pkt_dev, pkt_dev->next_tx);
3407
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02003408 if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) {
3409 skb = pkt_dev->skb;
3410 skb->protocol = eth_type_trans(skb, skb->dev);
3411 atomic_add(burst, &skb->users);
3412 local_bh_disable();
3413 do {
3414 ret = netif_receive_skb(skb);
3415 if (ret == NET_RX_DROP)
3416 pkt_dev->errors++;
3417 pkt_dev->sofar++;
3418 pkt_dev->seq_num++;
3419 if (atomic_read(&skb->users) != burst) {
3420 /* skb was queued by rps/rfs or taps,
3421 * so cannot reuse this skb
3422 */
3423 atomic_sub(burst - 1, &skb->users);
3424 /* get out of the loop and wait
3425 * until skb is consumed
3426 */
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02003427 break;
3428 }
3429 /* skb was 'freed' by stack, so clean few
3430 * bits and reuse it
3431 */
3432#ifdef CONFIG_NET_CLS_ACT
3433 skb->tc_verd = 0; /* reset reclass/redir ttl */
3434#endif
3435 } while (--burst > 0);
3436 goto out; /* Skips xmit_mode M_START_XMIT */
3437 }
3438
Daniel Borkmann10c51b56232014-08-27 11:11:27 +02003439 txq = skb_get_tx_queue(odev, pkt_dev->skb);
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003440
Daniel Borkmann0f2eea42014-04-11 13:22:00 +02003441 local_bh_disable();
3442
3443 HARD_TX_LOCK(odev, txq, smp_processor_id());
Stephen Hemmingeref879792009-09-22 19:41:43 +00003444
Daniel Borkmann6f25cd42014-04-07 17:18:30 +02003445 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003446 ret = NETDEV_TX_BUSY;
Eric Dumazet0835acf2009-09-30 13:03:33 +00003447 pkt_dev->last_ok = 0;
3448 goto unlock;
3449 }
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07003450 atomic_add(burst, &pkt_dev->skb->users);
3451
3452xmit_more:
3453 ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003454
Stephen Hemmingeref879792009-09-22 19:41:43 +00003455 switch (ret) {
3456 case NETDEV_TX_OK:
Stephen Hemmingeref879792009-09-22 19:41:43 +00003457 pkt_dev->last_ok = 1;
3458 pkt_dev->sofar++;
3459 pkt_dev->seq_num++;
Eric Dumazetbaac8562009-11-05 21:04:32 -08003460 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07003461 if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq))
3462 goto xmit_more;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003463 break;
John Fastabendf466dba2009-12-23 22:02:57 -08003464 case NET_XMIT_DROP:
3465 case NET_XMIT_CN:
3466 case NET_XMIT_POLICED:
3467 /* skb has been consumed */
3468 pkt_dev->errors++;
3469 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003470 default: /* Drivers are not supposed to return other values! */
Joe Perchese87cc472012-05-13 21:56:26 +00003471 net_info_ratelimited("%s xmit error: %d\n",
3472 pkt_dev->odevname, ret);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003473 pkt_dev->errors++;
3474 /* fallthru */
3475 case NETDEV_TX_LOCKED:
3476 case NETDEV_TX_BUSY:
3477 /* Retry it next time */
3478 atomic_dec(&(pkt_dev->skb->users));
3479 pkt_dev->last_ok = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003480 }
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07003481 if (unlikely(burst))
3482 atomic_sub(burst, &pkt_dev->skb->users);
Eric Dumazet0835acf2009-09-30 13:03:33 +00003483unlock:
Daniel Borkmann0f2eea42014-04-11 13:22:00 +02003484 HARD_TX_UNLOCK(odev, txq);
3485
Alexei Starovoitov62f64ae2015-05-07 16:35:32 +02003486out:
Daniel Borkmann0f2eea42014-04-11 13:22:00 +02003487 local_bh_enable();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003488
Linus Torvalds1da177e2005-04-16 15:20:36 -07003489 /* If pkt_dev->count is zero, then run forever */
3490 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003491 pktgen_wait_for_skb(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003492
Linus Torvalds1da177e2005-04-16 15:20:36 -07003493 /* Done with this */
3494 pktgen_stop_device(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003495 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003496}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003497
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003498/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07003499 * Main loop of the thread goes here
3500 */
3501
David S. Milleree74baa2007-01-01 20:51:53 -08003502static int pktgen_thread_worker(void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003503{
3504 DEFINE_WAIT(wait);
David S. Milleree74baa2007-01-01 20:51:53 -08003505 struct pktgen_thread *t = arg;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003506 struct pktgen_dev *pkt_dev = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003507 int cpu = t->cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003508
David S. Milleree74baa2007-01-01 20:51:53 -08003509 BUG_ON(smp_processor_id() != cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003510
3511 init_waitqueue_head(&t->queue);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003512 complete(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003513
Joe Perchesf9467ea2010-06-21 12:29:14 +00003514 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003515
Rafael J. Wysocki83144182007-07-17 04:03:35 -07003516 set_freezable();
3517
David S. Milleree74baa2007-01-01 20:51:53 -08003518 while (!kthread_should_stop()) {
3519 pkt_dev = next_to_run(t);
3520
Stephen Hemmingeref879792009-09-22 19:41:43 +00003521 if (unlikely(!pkt_dev && t->control == 0)) {
Cong Wang4e58a022013-01-28 19:55:53 +00003522 if (t->net->pktgen_exiting)
Eric Dumazet551eaff2010-11-21 10:26:44 -08003523 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003524 wait_event_interruptible_timeout(t->queue,
3525 t->control != 0,
3526 HZ/10);
Rafael J. Wysocki1b3f7202010-02-04 14:00:41 -08003527 try_to_freeze();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003528 continue;
David S. Milleree74baa2007-01-01 20:51:53 -08003529 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003530
Stephen Hemmingeref879792009-09-22 19:41:43 +00003531 if (likely(pkt_dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003532 pktgen_xmit(pkt_dev);
3533
Stephen Hemmingeref879792009-09-22 19:41:43 +00003534 if (need_resched())
3535 pktgen_resched(pkt_dev);
3536 else
3537 cpu_relax();
3538 }
3539
Luiz Capitulino222f1802006-03-20 22:16:13 -08003540 if (t->control & T_STOP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003541 pktgen_stop(t);
3542 t->control &= ~(T_STOP);
3543 }
3544
Luiz Capitulino222f1802006-03-20 22:16:13 -08003545 if (t->control & T_RUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003546 pktgen_run(t);
3547 t->control &= ~(T_RUN);
3548 }
3549
Luiz Capitulino222f1802006-03-20 22:16:13 -08003550 if (t->control & T_REMDEVALL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003551 pktgen_rem_all_ifs(t);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003552 t->control &= ~(T_REMDEVALL);
3553 }
3554
Luiz Capitulino222f1802006-03-20 22:16:13 -08003555 if (t->control & T_REMDEV) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003556 pktgen_rem_one_if(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003557 t->control &= ~(T_REMDEV);
3558 }
3559
Andrew Morton09fe3ef2007-04-12 14:45:32 -07003560 try_to_freeze();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003561 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003562
Joe Perchesf9467ea2010-06-21 12:29:14 +00003563 pr_debug("%s stopping all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003564 pktgen_stop(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003565
Joe Perchesf9467ea2010-06-21 12:29:14 +00003566 pr_debug("%s removing all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003567 pktgen_rem_all_ifs(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003568
Joe Perchesf9467ea2010-06-21 12:29:14 +00003569 pr_debug("%s removing thread\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003570 pktgen_rem_thread(t);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003571
David S. Milleree74baa2007-01-01 20:51:53 -08003572 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003573}
3574
Luiz Capitulino222f1802006-03-20 22:16:13 -08003575static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -08003576 const char *ifname, bool exact)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003577{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003578 struct pktgen_dev *p, *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08003579 size_t len = strlen(ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003580
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003581 rcu_read_lock();
3582 list_for_each_entry_rcu(p, &t->if_list, list)
Eric Dumazet3e984842009-11-24 14:50:53 -08003583 if (strncmp(p->odevname, ifname, len) == 0) {
3584 if (p->odevname[len]) {
3585 if (exact || p->odevname[len] != '@')
3586 continue;
3587 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003588 pkt_dev = p;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003589 break;
3590 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003591
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003592 rcu_read_unlock();
Joe Perchesf9467ea2010-06-21 12:29:14 +00003593 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003594 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003595}
3596
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003597/*
3598 * Adds a dev at front of if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003599 */
3600
Luiz Capitulino222f1802006-03-20 22:16:13 -08003601static int add_dev_to_thread(struct pktgen_thread *t,
3602 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003603{
3604 int rv = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003605
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003606 /* This function cannot be called concurrently, as its called
3607 * under pktgen_thread_lock mutex, but it can run from
3608 * userspace on another CPU than the kthread. The if_lock()
3609 * is used here to sync with concurrent instances of
3610 * _rem_dev_from_if_list() invoked via kthread, which is also
3611 * updating the if_list */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003612 if_lock(t);
3613
3614 if (pkt_dev->pg_thread) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003615 pr_err("ERROR: already assigned to a thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003616 rv = -EBUSY;
3617 goto out;
3618 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003619
Linus Torvalds1da177e2005-04-16 15:20:36 -07003620 pkt_dev->running = 0;
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003621 pkt_dev->pg_thread = t;
3622 list_add_rcu(&pkt_dev->list, &t->if_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003623
Luiz Capitulino222f1802006-03-20 22:16:13 -08003624out:
3625 if_unlock(t);
3626 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003627}
3628
3629/* Called under thread lock */
3630
Luiz Capitulino222f1802006-03-20 22:16:13 -08003631static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003632{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003633 struct pktgen_dev *pkt_dev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08003634 int err;
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003635 int node = cpu_to_node(t->cpu);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003636
Linus Torvalds1da177e2005-04-16 15:20:36 -07003637 /* We don't allow a device to be on several threads */
3638
Cong Wang4e58a022013-01-28 19:55:53 +00003639 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003640 if (pkt_dev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003641 pr_err("ERROR: interface already used\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003642 return -EBUSY;
3643 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003644
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003645 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003646 if (!pkt_dev)
3647 return -ENOMEM;
3648
Eric Dumazet593f63b2009-11-23 01:44:37 +00003649 strcpy(pkt_dev->odevname, ifname);
WANG Cong68d5ac22011-05-22 00:17:11 +00003650 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003651 node);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003652 if (pkt_dev->flows == NULL) {
3653 kfree(pkt_dev);
3654 return -ENOMEM;
3655 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003656
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003657 pkt_dev->removal_mark = 0;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003658 pkt_dev->nfrags = 0;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003659 pkt_dev->delay = pg_delay_d;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003660 pkt_dev->count = pg_count_d;
3661 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003662 pkt_dev->udp_src_min = 9; /* sink port */
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003663 pkt_dev->udp_src_max = 9;
3664 pkt_dev->udp_dst_min = 9;
3665 pkt_dev->udp_dst_max = 9;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003666 pkt_dev->vlan_p = 0;
3667 pkt_dev->vlan_cfi = 0;
3668 pkt_dev->vlan_id = 0xffff;
3669 pkt_dev->svlan_p = 0;
3670 pkt_dev->svlan_cfi = 0;
3671 pkt_dev->svlan_id = 0xffff;
Alexei Starovoitov38b2cf22014-09-30 17:53:21 -07003672 pkt_dev->burst = 1;
Robert Olssone99b99b2010-03-18 22:44:30 +00003673 pkt_dev->node = -1;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003674
Cong Wang4e58a022013-01-28 19:55:53 +00003675 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003676 if (err)
3677 goto out1;
Neil Hormand8873312011-07-26 06:05:37 +00003678 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3679 pkt_dev->clone_skb = pg_clone_skb_d;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003680
Cong Wang4e58a022013-01-28 19:55:53 +00003681 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003682 &pktgen_if_fops, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003683 if (!pkt_dev->entry) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003684 pr_err("cannot create %s/%s procfs entry\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003685 PG_PROC_DIR, ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003686 err = -EINVAL;
3687 goto out2;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003688 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003689#ifdef CONFIG_XFRM
3690 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3691 pkt_dev->ipsproto = IPPROTO_ESP;
Fan Ducf93d472014-01-03 11:18:31 +08003692
3693 /* xfrm tunnel mode needs additional dst to extract outter
3694 * ip header protocol/ttl/id field, here creat a phony one.
3695 * instead of looking for a valid rt, which definitely hurting
3696 * performance under such circumstance.
3697 */
3698 pkt_dev->dstops.family = AF_INET;
3699 pkt_dev->dst.dev = pkt_dev->odev;
3700 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3701 pkt_dev->dst.child = &pkt_dev->dst;
3702 pkt_dev->dst.ops = &pkt_dev->dstops;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003703#endif
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003704
3705 return add_dev_to_thread(t, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003706out2:
3707 dev_put(pkt_dev->odev);
3708out1:
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003709#ifdef CONFIG_XFRM
3710 free_SAs(pkt_dev);
3711#endif
Figo.zhang1d0ebfe2009-06-08 00:40:35 -07003712 vfree(pkt_dev->flows);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003713 kfree(pkt_dev);
3714 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003715}
3716
Cong Wang4e58a022013-01-28 19:55:53 +00003717static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003718{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003719 struct pktgen_thread *t;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003720 struct proc_dir_entry *pe;
David S. Milleree74baa2007-01-01 20:51:53 -08003721 struct task_struct *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003722
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003723 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3724 cpu_to_node(cpu));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003725 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003726 pr_err("ERROR: out of memory, can't create new thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003727 return -ENOMEM;
3728 }
3729
Luiz Capitulino222f1802006-03-20 22:16:13 -08003730 spin_lock_init(&t->if_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003731 t->cpu = cpu;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003732
David S. Milleree74baa2007-01-01 20:51:53 -08003733 INIT_LIST_HEAD(&t->if_list);
3734
Cong Wang4e58a022013-01-28 19:55:53 +00003735 list_add_tail(&t->th_list, &pn->pktgen_threads);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003736 init_completion(&t->start_done);
David S. Milleree74baa2007-01-01 20:51:53 -08003737
Eric Dumazet94dcf292011-03-22 16:30:45 -07003738 p = kthread_create_on_node(pktgen_thread_worker,
3739 t,
3740 cpu_to_node(cpu),
3741 "kpktgend_%d", cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003742 if (IS_ERR(p)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003743 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003744 list_del(&t->th_list);
3745 kfree(t);
3746 return PTR_ERR(p);
3747 }
3748 kthread_bind(p, cpu);
3749 t->tsk = p;
3750
Cong Wang4e58a022013-01-28 19:55:53 +00003751 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003752 &pktgen_thread_fops, t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003753 if (!pe) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003754 pr_err("cannot create %s/%s procfs entry\n",
David S. Milleree74baa2007-01-01 20:51:53 -08003755 PG_PROC_DIR, t->tsk->comm);
3756 kthread_stop(p);
3757 list_del(&t->th_list);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003758 kfree(t);
3759 return -EINVAL;
3760 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003761
Cong Wang4e58a022013-01-28 19:55:53 +00003762 t->net = pn;
Oleg Nesterov1fbe4b462015-07-08 21:42:13 +02003763 get_task_struct(p);
David S. Milleree74baa2007-01-01 20:51:53 -08003764 wake_up_process(p);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003765 wait_for_completion(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003766
3767 return 0;
3768}
3769
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003770/*
3771 * Removes a device from the thread if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003772 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003773static void _rem_dev_from_if_list(struct pktgen_thread *t,
3774 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003775{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003776 struct list_head *q, *n;
3777 struct pktgen_dev *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003778
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003779 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003780 list_for_each_safe(q, n, &t->if_list) {
3781 p = list_entry(q, struct pktgen_dev, list);
3782 if (p == pkt_dev)
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003783 list_del_rcu(&p->list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003784 }
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003785 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003786}
3787
Luiz Capitulino222f1802006-03-20 22:16:13 -08003788static int pktgen_remove_device(struct pktgen_thread *t,
3789 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003790{
Joe Perchesf9467ea2010-06-21 12:29:14 +00003791 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003792
Luiz Capitulino222f1802006-03-20 22:16:13 -08003793 if (pkt_dev->running) {
Joe Perches294a0b72014-09-09 21:17:30 -07003794 pr_warn("WARNING: trying to remove a running interface, stopping it now\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003795 pktgen_stop_device(pkt_dev);
3796 }
3797
3798 /* Dis-associate from the interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003799
3800 if (pkt_dev->odev) {
3801 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003802 pkt_dev->odev = NULL;
3803 }
3804
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003805 /* Remove proc before if_list entry, because add_device uses
3806 * list to determine if interface already exist, avoid race
3807 * with proc_create_data() */
Markus Elfringef87c5d2014-11-18 20:10:34 +01003808 proc_remove(pkt_dev->entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003809
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003810 /* And update the thread if_list */
3811 _rem_dev_from_if_list(t, pkt_dev);
3812
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003813#ifdef CONFIG_XFRM
3814 free_SAs(pkt_dev);
3815#endif
Figo.zhang1d0ebfe2009-06-08 00:40:35 -07003816 vfree(pkt_dev->flows);
Eric Dumazet26ad7872011-01-25 13:26:05 -08003817 if (pkt_dev->page)
3818 put_page(pkt_dev->page);
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003819 kfree_rcu(pkt_dev, rcu);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003820 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003821}
3822
Cong Wang4e58a022013-01-28 19:55:53 +00003823static int __net_init pg_net_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003824{
Cong Wang4e58a022013-01-28 19:55:53 +00003825 struct pktgen_net *pn = net_generic(net, pg_net_id);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003826 struct proc_dir_entry *pe;
Cong Wang4e58a022013-01-28 19:55:53 +00003827 int cpu, ret = 0;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003828
Cong Wang4e58a022013-01-28 19:55:53 +00003829 pn->net = net;
3830 INIT_LIST_HEAD(&pn->pktgen_threads);
3831 pn->pktgen_exiting = false;
3832 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3833 if (!pn->proc_dir) {
3834 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003835 return -ENODEV;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003836 }
Cong Wang4e58a022013-01-28 19:55:53 +00003837 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
3838 if (pe == NULL) {
3839 pr_err("cannot create %s procfs entry\n", PGCTRL);
3840 ret = -EINVAL;
3841 goto remove;
3842 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003843
John Hawkes670c02c2005-10-13 09:30:31 -07003844 for_each_online_cpu(cpu) {
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003845 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003846
Cong Wang4e58a022013-01-28 19:55:53 +00003847 err = pktgen_create_thread(cpu, pn);
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003848 if (err)
Cong Wang4e58a022013-01-28 19:55:53 +00003849 pr_warn("Cannot create thread for cpu %d (%d)\n",
Joe Perchesf9467ea2010-06-21 12:29:14 +00003850 cpu, err);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003851 }
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003852
Cong Wang4e58a022013-01-28 19:55:53 +00003853 if (list_empty(&pn->pktgen_threads)) {
3854 pr_err("Initialization failed for all threads\n");
WANG Congce14f892011-05-22 00:52:08 +00003855 ret = -ENODEV;
Cong Wang4e58a022013-01-28 19:55:53 +00003856 goto remove_entry;
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003857 }
3858
Luiz Capitulino222f1802006-03-20 22:16:13 -08003859 return 0;
WANG Congce14f892011-05-22 00:52:08 +00003860
Cong Wang4e58a022013-01-28 19:55:53 +00003861remove_entry:
3862 remove_proc_entry(PGCTRL, pn->proc_dir);
3863remove:
Gao fengece31ff2013-02-18 01:34:56 +00003864 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
WANG Congce14f892011-05-22 00:52:08 +00003865 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003866}
3867
Cong Wang4e58a022013-01-28 19:55:53 +00003868static void __net_exit pg_net_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003869{
Cong Wang4e58a022013-01-28 19:55:53 +00003870 struct pktgen_net *pn = net_generic(net, pg_net_id);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003871 struct pktgen_thread *t;
3872 struct list_head *q, *n;
Eric Dumazetd4b11332012-05-17 23:52:26 +00003873 LIST_HEAD(list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003874
Luiz Capitulino222f1802006-03-20 22:16:13 -08003875 /* Stop all interfaces & threads */
Cong Wang4e58a022013-01-28 19:55:53 +00003876 pn->pktgen_exiting = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003877
Eric Dumazetc57b5462012-05-09 13:29:51 +00003878 mutex_lock(&pktgen_thread_lock);
Cong Wang4e58a022013-01-28 19:55:53 +00003879 list_splice_init(&pn->pktgen_threads, &list);
Eric Dumazetc57b5462012-05-09 13:29:51 +00003880 mutex_unlock(&pktgen_thread_lock);
3881
3882 list_for_each_safe(q, n, &list) {
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003883 t = list_entry(q, struct pktgen_thread, th_list);
Eric Dumazetc57b5462012-05-09 13:29:51 +00003884 list_del(&t->th_list);
David S. Milleree74baa2007-01-01 20:51:53 -08003885 kthread_stop(t->tsk);
Oleg Nesterov1fbe4b462015-07-08 21:42:13 +02003886 put_task_struct(t->tsk);
David S. Milleree74baa2007-01-01 20:51:53 -08003887 kfree(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003888 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003889
Cong Wang4e58a022013-01-28 19:55:53 +00003890 remove_proc_entry(PGCTRL, pn->proc_dir);
Gao fengece31ff2013-02-18 01:34:56 +00003891 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
Cong Wang4e58a022013-01-28 19:55:53 +00003892}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003893
Cong Wang4e58a022013-01-28 19:55:53 +00003894static struct pernet_operations pg_net_ops = {
3895 .init = pg_net_init,
3896 .exit = pg_net_exit,
3897 .id = &pg_net_id,
3898 .size = sizeof(struct pktgen_net),
3899};
3900
3901static int __init pg_init(void)
3902{
3903 int ret = 0;
3904
3905 pr_info("%s", version);
3906 ret = register_pernet_subsys(&pg_net_ops);
3907 if (ret)
3908 return ret;
3909 ret = register_netdevice_notifier(&pktgen_notifier_block);
3910 if (ret)
3911 unregister_pernet_subsys(&pg_net_ops);
3912
3913 return ret;
3914}
3915
3916static void __exit pg_cleanup(void)
3917{
3918 unregister_netdevice_notifier(&pktgen_notifier_block);
3919 unregister_pernet_subsys(&pg_net_ops);
Jesper Dangaard Brouer87883702014-06-26 13:16:59 +02003920 /* Don't need rcu_barrier() due to use of kfree_rcu() */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003921}
3922
Linus Torvalds1da177e2005-04-16 15:20:36 -07003923module_init(pg_init);
3924module_exit(pg_cleanup);
3925
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003926MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003927MODULE_DESCRIPTION("Packet Generator tool");
3928MODULE_LICENSE("GPL");
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003929MODULE_VERSION(VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003930module_param(pg_count_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003931MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003932module_param(pg_delay_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003933MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003934module_param(pg_clone_skb_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003935MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003936module_param(debug, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003937MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");