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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
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090075 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 * to /proc gives result code thats should be read be the "writer".
Stephen Hemmingerb4099fa2005-10-14 15:32:22 -070078 * For practical use this should be no problem.
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090080 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 * --ro
83 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090084 * Fix refcount off by one if first packet fails, potential null deref,
Linus Torvalds1da177e2005-04-16 15:20:36 -070085 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090092 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090096 * New xmit() return, do_div and misc clean up by Stephen Hemminger
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 * <shemminger@osdl.org> 040923
98 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090099 * Randy Dunlap fixed u64 printk compiler waring
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 * 050103
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
Adit Ranadivece5d0b42007-09-16 14:52:15 -0700114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 */
Joe Perchesf9467ea2010-06-21 12:29:14 +0000118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
Luiz Capitulino222fa072006-03-20 22:24:27 -0800126#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
Randy Dunlap4fc268d2006-01-11 12:17:47 -0800136#include <linux/capability.h>
Stephen Hemminger2bc481c2009-08-28 23:41:29 -0700137#include <linux/hrtimer.h>
Andrew Morton09fe3ef2007-04-12 14:45:32 -0700138#include <linux/freezer.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#include <linux/delay.h>
140#include <linux/timer.h>
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800141#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700149#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700155#include <linux/seq_file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156#include <linux/wait.h>
Kris Katterjohnf404e9a2006-01-17 13:04:57 -0800157#include <linux/etherdevice.h>
David S. Milleree74baa2007-01-01 20:51:53 -0800158#include <linux/kthread.h>
Linus Torvalds268bb0c2011-05-20 12:50:29 -0700159#include <linux/prefetch.h>
Eric W. Biederman457c4cb2007-09-12 12:01:34 +0200160#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161#include <net/checksum.h>
162#include <net/ipv6.h>
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200163#include <net/udp.h>
Stephen Rothwell73d94e92013-07-29 16:21:26 +1000164#include <net/ip6_checksum.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165#include <net/addrconf.h>
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700166#ifdef CONFIG_XFRM
167#include <net/xfrm.h>
168#endif
Cong Wang4e58a022013-01-28 19:55:53 +0000169#include <net/netns/generic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170#include <asm/byteorder.h>
171#include <linux/rcupdate.h>
Jiri Slaby1977f032007-10-18 23:40:25 -0700172#include <linux/bitops.h>
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000173#include <linux/io.h>
174#include <linux/timex.h>
175#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176#include <asm/dma.h>
Luiz Capitulino222f1802006-03-20 22:16:13 -0800177#include <asm/div64.h> /* do_div */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Daniel Turull43d28b62010-06-09 22:49:57 +0000179#define VERSION "2.74"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180#define IP_NAME_SZ 32
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800181#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -0800182#define MPLS_STACK_BOTTOM htonl(0x00000100)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Joe Perchesf9467ea2010-06-21 12:29:14 +0000184#define func_enter() pr_debug("entering %s\n", __func__);
185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186/* Device flag bits */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800187#define F_IPSRC_RND (1<<0) /* IP-Src Random */
188#define F_IPDST_RND (1<<1) /* IP-Dst Random */
189#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
190#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
191#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
192#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
193#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
194#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800195#define F_MPLS_RND (1<<8) /* Random MPLS labels */
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700196#define F_VID_RND (1<<9) /* Random VLAN ID */
197#define F_SVID_RND (1<<10) /* Random SVLAN ID */
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700198#define F_FLOW_SEQ (1<<11) /* Sequential flows */
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700199#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
Robert Olsson45b270f2007-08-28 15:45:55 -0700200#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
Robert Olssone6fce5b2008-08-07 02:23:01 -0700201#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
Robert Olssone99b99b2010-03-18 22:44:30 +0000202#define F_NODE (1<<15) /* Node memory alloc*/
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200203#define F_UDPCSUM (1<<16) /* Include UDP checksum */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
205/* Thread control flag bits */
Stephen Hemminger6b80d6a2009-09-22 19:41:42 +0000206#define T_STOP (1<<0) /* Stop run */
207#define T_RUN (1<<1) /* Start run */
208#define T_REMDEVALL (1<<2) /* Remove all devs */
209#define T_REMDEV (1<<3) /* Remove one dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211/* If lock -- can be removed after some work */
212#define if_lock(t) spin_lock(&(t->if_lock));
213#define if_unlock(t) spin_unlock(&(t->if_lock));
214
215/* Used to help with determining the pkts on receive */
216#define PKTGEN_MAGIC 0xbe9be955
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700217#define PG_PROC_DIR "pktgen"
218#define PGCTRL "pgctrl"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220#define MAX_CFLOWS 65536
221
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700222#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
223#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
224
Luiz Capitulino222f1802006-03-20 22:16:13 -0800225struct flow_state {
Al Viro252e3342006-11-14 20:48:11 -0800226 __be32 cur_daddr;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800227 int count;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700228#ifdef CONFIG_XFRM
229 struct xfrm_state *x;
230#endif
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700231 __u32 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232};
233
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700234/* flow flag bits */
235#define F_INIT (1<<0) /* flow has been initialized */
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237struct pktgen_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 /*
239 * Try to keep frequent/infrequent used vars. separated.
240 */
Stephen Hemminger39df2322007-03-04 16:11:51 -0800241 struct proc_dir_entry *entry; /* proc file */
242 struct pktgen_thread *pg_thread;/* the owner */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000243 struct list_head list; /* chaining in the thread's run-queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000245 int running; /* if false, the test will stop */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800246
247 /* If min != max, then we will either do a linear iteration, or
248 * we will do a random selection from within the range.
249 */
250 __u32 flags;
Arthur Kepner95ed63f2006-03-20 21:26:56 -0800251 int removal_mark; /* non-zero => the device is marked for
252 * removal by worker thread */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
Amerigo Wang68bf9f02012-10-09 17:48:17 +0000254 int min_pkt_size;
255 int max_pkt_size;
Jamal Hadi Salim16dab722007-07-02 22:39:50 -0700256 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800257 int nfrags;
Eric Dumazet26ad7872011-01-25 13:26:05 -0800258 struct page *page;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000259 u64 delay; /* nano-seconds */
260
Luiz Capitulino222f1802006-03-20 22:16:13 -0800261 __u64 count; /* Default No packets to send */
262 __u64 sofar; /* How many pkts we've sent so far */
263 __u64 tx_bytes; /* How many bytes we've transmitted */
John Fastabendf466dba2009-12-23 22:02:57 -0800264 __u64 errors; /* Errors when trying to transmit, */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
Luiz Capitulino222f1802006-03-20 22:16:13 -0800266 /* runtime counters relating to clone_skb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
Luiz Capitulino222f1802006-03-20 22:16:13 -0800268 __u64 allocated_skbs;
269 __u32 clone_count;
270 int last_ok; /* Was last skb sent?
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000271 * Or a failed transmit of some sort?
272 * This will keep sequence numbers in order
Luiz Capitulino222f1802006-03-20 22:16:13 -0800273 */
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000274 ktime_t next_tx;
275 ktime_t started_at;
276 ktime_t stopped_at;
277 u64 idle_acc; /* nano-seconds */
278
Luiz Capitulino222f1802006-03-20 22:16:13 -0800279 __u32 seq_num;
280
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000281 int clone_skb; /*
282 * Use multiple SKBs during packet gen.
283 * If this number is greater than 1, then
284 * that many copies of the same packet will be
285 * sent before a new packet is allocated.
286 * If you want to send 1024 identical packets
287 * before creating a new packet,
288 * set clone_skb to 1024.
Luiz Capitulino222f1802006-03-20 22:16:13 -0800289 */
290
291 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
293 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
294 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
295
296 struct in6_addr in6_saddr;
297 struct in6_addr in6_daddr;
298 struct in6_addr cur_in6_daddr;
299 struct in6_addr cur_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 /* For ranges */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800301 struct in6_addr min_in6_daddr;
302 struct in6_addr max_in6_daddr;
303 struct in6_addr min_in6_saddr;
304 struct in6_addr max_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
Luiz Capitulino222f1802006-03-20 22:16:13 -0800306 /* If we're doing ranges, random or incremental, then this
307 * defines the min/max for those ranges.
308 */
Al Viro252e3342006-11-14 20:48:11 -0800309 __be32 saddr_min; /* inclusive, source IP address */
310 __be32 saddr_max; /* exclusive, source IP address */
311 __be32 daddr_min; /* inclusive, dest IP address */
312 __be32 daddr_max; /* exclusive, dest IP address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
Luiz Capitulino222f1802006-03-20 22:16:13 -0800314 __u16 udp_src_min; /* inclusive, source UDP port */
315 __u16 udp_src_max; /* exclusive, source UDP port */
316 __u16 udp_dst_min; /* inclusive, dest UDP port */
317 __u16 udp_dst_max; /* exclusive, dest UDP port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700319 /* DSCP + ECN */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000320 __u8 tos; /* six MSB of (former) IPv4 TOS
321 are for dscp codepoint */
322 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
323 (see RFC 3260, sec. 4) */
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700324
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800325 /* MPLS */
Eric Dumazet95c96172012-04-15 05:58:06 +0000326 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800327 __be32 labels[MAX_MPLS_LABELS];
328
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700329 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
330 __u8 vlan_p;
331 __u8 vlan_cfi;
332 __u16 vlan_id; /* 0xffff means no vlan tag */
333
334 __u8 svlan_p;
335 __u8 svlan_cfi;
336 __u16 svlan_id; /* 0xffff means no svlan tag */
337
Luiz Capitulino222f1802006-03-20 22:16:13 -0800338 __u32 src_mac_count; /* How many MACs to iterate through */
339 __u32 dst_mac_count; /* How many MACs to iterate through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Luiz Capitulino222f1802006-03-20 22:16:13 -0800341 unsigned char dst_mac[ETH_ALEN];
342 unsigned char src_mac[ETH_ALEN];
343
344 __u32 cur_dst_mac_offset;
345 __u32 cur_src_mac_offset;
Al Viro252e3342006-11-14 20:48:11 -0800346 __be32 cur_saddr;
347 __be32 cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -0700348 __u16 ip_id;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800349 __u16 cur_udp_dst;
350 __u16 cur_udp_src;
Robert Olsson45b270f2007-08-28 15:45:55 -0700351 __u16 cur_queue_map;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800352 __u32 cur_pkt_size;
Eric Dumazetbaac8562009-11-05 21:04:32 -0800353 __u32 last_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800354
355 __u8 hh[14];
356 /* = {
357 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
358
359 We fill in SRC address later
360 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
361 0x08, 0x00
362 };
363 */
364 __u16 pad; /* pad out the hh struct to an even 16 bytes */
365
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000366 struct sk_buff *skb; /* skb we are to transmit next, used for when we
Luiz Capitulino222f1802006-03-20 22:16:13 -0800367 * are transmitting the same one multiple times
368 */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000369 struct net_device *odev; /* The out-going device.
370 * Note that the device should have it's
371 * pg_info pointer pointing back to this
372 * device.
373 * Set when the user specifies the out-going
374 * device name (not when the inject is
375 * started as it used to do.)
376 */
Eric Dumazet593f63b2009-11-23 01:44:37 +0000377 char odevname[32];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 struct flow_state *flows;
Eric Dumazet95c96172012-04-15 05:58:06 +0000379 unsigned int cflows; /* Concurrent flows (config) */
380 unsigned int lflow; /* Flow length (config) */
381 unsigned int nflows; /* accumulated flows (stats) */
382 unsigned int curfl; /* current sequenced flow (state)*/
Robert Olsson45b270f2007-08-28 15:45:55 -0700383
384 u16 queue_map_min;
385 u16 queue_map_max;
John Fastabend9e50e3a2010-11-16 19:12:28 +0000386 __u32 skb_priority; /* skb priority field */
Robert Olssone99b99b2010-03-18 22:44:30 +0000387 int node; /* Memory node */
Robert Olsson45b270f2007-08-28 15:45:55 -0700388
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700389#ifdef CONFIG_XFRM
390 __u8 ipsmode; /* IPSEC mode (config) */
391 __u8 ipsproto; /* IPSEC type (config) */
Fan Dude4aee72014-01-03 11:18:30 +0800392 __u32 spi;
Fan Ducf93d472014-01-03 11:18:31 +0800393 struct dst_entry dst;
394 struct dst_ops dstops;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700395#endif
Stephen Hemminger39df2322007-03-04 16:11:51 -0800396 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397};
398
399struct pktgen_hdr {
Al Viro252e3342006-11-14 20:48:11 -0800400 __be32 pgh_magic;
401 __be32 seq_num;
402 __be32 tv_sec;
403 __be32 tv_usec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404};
405
Cong Wang4e58a022013-01-28 19:55:53 +0000406
407static int pg_net_id __read_mostly;
408
409struct pktgen_net {
410 struct net *net;
411 struct proc_dir_entry *proc_dir;
412 struct list_head pktgen_threads;
413 bool pktgen_exiting;
414};
Eric Dumazet551eaff2010-11-21 10:26:44 -0800415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416struct pktgen_thread {
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000417 spinlock_t if_lock; /* for list of devices */
Luiz Capitulinoc26a8012006-03-20 22:18:16 -0800418 struct list_head if_list; /* All device here */
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800419 struct list_head th_list;
David S. Milleree74baa2007-01-01 20:51:53 -0800420 struct task_struct *tsk;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800421 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000423 /* Field for thread to receive "posted" events terminate,
424 stop ifs etc. */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800425
426 u32 control;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 int cpu;
428
Luiz Capitulino222f1802006-03-20 22:16:13 -0800429 wait_queue_head_t queue;
Denis V. Lunevd3ede322008-05-20 15:12:44 -0700430 struct completion start_done;
Cong Wang4e58a022013-01-28 19:55:53 +0000431 struct pktgen_net *net;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432};
433
434#define REMOVE 1
435#define FIND 0
436
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000437static const char version[] =
Joe Perchesf9467ea2010-06-21 12:29:14 +0000438 "Packet Generator for packet performance testing. "
439 "Version: " VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Luiz Capitulino222f1802006-03-20 22:16:13 -0800441static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
442static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
443static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -0800444 const char *ifname, bool exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
Cong Wang4e58a022013-01-28 19:55:53 +0000446static void pktgen_run_all_threads(struct pktgen_net *pn);
447static void pktgen_reset_all_threads(struct pktgen_net *pn);
448static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
Stephen Hemminger3bda06a2009-08-27 13:55:10 +0000449
Luiz Capitulino222f1802006-03-20 22:16:13 -0800450static void pktgen_stop(struct pktgen_thread *t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -0800452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453/* Module parameters, defaults. */
Stephen Hemminger65c5b782009-08-27 13:55:09 +0000454static int pg_count_d __read_mostly = 1000;
455static int pg_delay_d __read_mostly;
456static int pg_clone_skb_d __read_mostly;
457static int debug __read_mostly;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Luiz Capitulino222fa072006-03-20 22:24:27 -0800459static DEFINE_MUTEX(pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461static struct notifier_block pktgen_notifier_block = {
462 .notifier_call = pktgen_device_event,
463};
464
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465/*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900466 * /proc handling functions
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 *
468 */
469
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700470static int pgctrl_show(struct seq_file *seq, void *v)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800471{
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000472 seq_puts(seq, version);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700473 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474}
475
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000476static ssize_t pgctrl_write(struct file *file, const char __user *buf,
477 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478{
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700479 char data[128];
Cong Wang4e58a022013-01-28 19:55:53 +0000480 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481
Mathias Krause09455742014-02-21 21:38:35 +0100482 if (!capable(CAP_NET_ADMIN))
483 return -EPERM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484
Mathias Krause20b0c712014-02-21 21:38:34 +0100485 if (count == 0)
486 return -EINVAL;
487
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700488 if (count > sizeof(data))
489 count = sizeof(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
Mathias Krause09455742014-02-21 21:38:35 +0100491 if (copy_from_user(data, buf, count))
492 return -EFAULT;
493
Mathias Krause20b0c712014-02-21 21:38:34 +0100494 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Luiz Capitulino222f1802006-03-20 22:16:13 -0800496 if (!strcmp(data, "stop"))
Cong Wang4e58a022013-01-28 19:55:53 +0000497 pktgen_stop_all_threads_ifs(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498
Luiz Capitulino222f1802006-03-20 22:16:13 -0800499 else if (!strcmp(data, "start"))
Cong Wang4e58a022013-01-28 19:55:53 +0000500 pktgen_run_all_threads(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800502 else if (!strcmp(data, "reset"))
Cong Wang4e58a022013-01-28 19:55:53 +0000503 pktgen_reset_all_threads(pn);
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800504
Luiz Capitulino222f1802006-03-20 22:16:13 -0800505 else
Joe Perchesf9467ea2010-06-21 12:29:14 +0000506 pr_warning("Unknown command: %s\n", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
Mathias Krause09455742014-02-21 21:38:35 +0100508 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509}
510
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700511static int pgctrl_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
Al Virod9dda782013-03-31 18:16:14 -0400513 return single_open(file, pgctrl_show, PDE_DATA(inode));
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700514}
515
Arjan van de Ven9a321442007-02-12 00:55:35 -0800516static const struct file_operations pktgen_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800517 .owner = THIS_MODULE,
518 .open = pgctrl_open,
519 .read = seq_read,
520 .llseek = seq_lseek,
521 .write = pgctrl_write,
522 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700523};
524
525static int pktgen_if_show(struct seq_file *seq, void *v)
526{
Stephen Hemminger648fda72009-08-27 13:55:07 +0000527 const struct pktgen_dev *pkt_dev = seq->private;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000528 ktime_t stopped;
529 u64 idle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Luiz Capitulino222f1802006-03-20 22:16:13 -0800531 seq_printf(seq,
532 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
533 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
534 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535
Luiz Capitulino222f1802006-03-20 22:16:13 -0800536 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000537 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
538 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
Eric Dumazet593f63b2009-11-23 01:44:37 +0000539 pkt_dev->clone_skb, pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
Luiz Capitulino222f1802006-03-20 22:16:13 -0800541 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
542 pkt_dev->lflow);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
Robert Olsson45b270f2007-08-28 15:45:55 -0700544 seq_printf(seq,
545 " queue_map_min: %u queue_map_max: %u\n",
546 pkt_dev->queue_map_min,
547 pkt_dev->queue_map_max);
548
John Fastabend9e50e3a2010-11-16 19:12:28 +0000549 if (pkt_dev->skb_priority)
550 seq_printf(seq, " skb_priority: %u\n",
551 pkt_dev->skb_priority);
552
Luiz Capitulino222f1802006-03-20 22:16:13 -0800553 if (pkt_dev->flags & F_IPV6) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800554 seq_printf(seq,
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000555 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
556 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
557 &pkt_dev->in6_saddr,
558 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
559 &pkt_dev->in6_daddr,
560 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000561 } else {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800562 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000563 " dst_min: %s dst_max: %s\n",
564 pkt_dev->dst_min, pkt_dev->dst_max);
565 seq_printf(seq,
566 " src_min: %s src_max: %s\n",
567 pkt_dev->src_min, pkt_dev->src_max);
568 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700570 seq_puts(seq, " src_mac: ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
Johannes Berge1749612008-10-27 15:59:26 -0700572 seq_printf(seq, "%pM ",
573 is_zero_ether_addr(pkt_dev->src_mac) ?
574 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
Thomas Graf97dc48e2014-05-16 23:28:54 +0200576 seq_puts(seq, "dst_mac: ");
Johannes Berge1749612008-10-27 15:59:26 -0700577 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
Luiz Capitulino222f1802006-03-20 22:16:13 -0800579 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000580 " udp_src_min: %d udp_src_max: %d"
581 " udp_dst_min: %d udp_dst_max: %d\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800582 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
583 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
Luiz Capitulino222f1802006-03-20 22:16:13 -0800585 seq_printf(seq,
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800586 " src_mac_count: %d dst_mac_count: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700587 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800589 if (pkt_dev->nr_labels) {
Eric Dumazet95c96172012-04-15 05:58:06 +0000590 unsigned int i;
Thomas Graf97dc48e2014-05-16 23:28:54 +0200591 seq_puts(seq, " mpls: ");
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700592 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800593 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
594 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
595 }
596
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000597 if (pkt_dev->vlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700598 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000599 pkt_dev->vlan_id, pkt_dev->vlan_p,
600 pkt_dev->vlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700601
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000602 if (pkt_dev->svlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700603 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000604 pkt_dev->svlan_id, pkt_dev->svlan_p,
605 pkt_dev->svlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700606
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000607 if (pkt_dev->tos)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700608 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700609
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000610 if (pkt_dev->traffic_class)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700611 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700612
Robert Olssone99b99b2010-03-18 22:44:30 +0000613 if (pkt_dev->node >= 0)
614 seq_printf(seq, " node: %d\n", pkt_dev->node);
615
Thomas Graf97dc48e2014-05-16 23:28:54 +0200616 seq_puts(seq, " Flags: ");
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800617
Luiz Capitulino222f1802006-03-20 22:16:13 -0800618 if (pkt_dev->flags & F_IPV6)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200619 seq_puts(seq, "IPV6 ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
Luiz Capitulino222f1802006-03-20 22:16:13 -0800621 if (pkt_dev->flags & F_IPSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200622 seq_puts(seq, "IPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
Luiz Capitulino222f1802006-03-20 22:16:13 -0800624 if (pkt_dev->flags & F_IPDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200625 seq_puts(seq, "IPDST_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626
Luiz Capitulino222f1802006-03-20 22:16:13 -0800627 if (pkt_dev->flags & F_TXSIZE_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200628 seq_puts(seq, "TXSIZE_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629
Luiz Capitulino222f1802006-03-20 22:16:13 -0800630 if (pkt_dev->flags & F_UDPSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200631 seq_puts(seq, "UDPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632
Luiz Capitulino222f1802006-03-20 22:16:13 -0800633 if (pkt_dev->flags & F_UDPDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200634 seq_puts(seq, "UDPDST_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800635
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200636 if (pkt_dev->flags & F_UDPCSUM)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200637 seq_puts(seq, "UDPCSUM ");
Thomas Grafc26bf4a2013-07-25 18:12:18 +0200638
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800639 if (pkt_dev->flags & F_MPLS_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200640 seq_puts(seq, "MPLS_RND ");
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800641
Robert Olsson45b270f2007-08-28 15:45:55 -0700642 if (pkt_dev->flags & F_QUEUE_MAP_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200643 seq_puts(seq, "QUEUE_MAP_RND ");
Robert Olsson45b270f2007-08-28 15:45:55 -0700644
Robert Olssone6fce5b2008-08-07 02:23:01 -0700645 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200646 seq_puts(seq, "QUEUE_MAP_CPU ");
Robert Olssone6fce5b2008-08-07 02:23:01 -0700647
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700648 if (pkt_dev->cflows) {
649 if (pkt_dev->flags & F_FLOW_SEQ)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200650 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700651 else
Thomas Graf97dc48e2014-05-16 23:28:54 +0200652 seq_puts(seq, "FLOW_RND ");
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700653 }
654
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700655#ifdef CONFIG_XFRM
Fan Du81013282014-01-03 11:18:33 +0800656 if (pkt_dev->flags & F_IPSEC_ON) {
Thomas Graf97dc48e2014-05-16 23:28:54 +0200657 seq_puts(seq, "IPSEC ");
Fan Du81013282014-01-03 11:18:33 +0800658 if (pkt_dev->spi)
659 seq_printf(seq, "spi:%u", pkt_dev->spi);
660 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700661#endif
662
Luiz Capitulino222f1802006-03-20 22:16:13 -0800663 if (pkt_dev->flags & F_MACSRC_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200664 seq_puts(seq, "MACSRC_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800665
666 if (pkt_dev->flags & F_MACDST_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200667 seq_puts(seq, "MACDST_RND ");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800668
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700669 if (pkt_dev->flags & F_VID_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200670 seq_puts(seq, "VID_RND ");
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700671
672 if (pkt_dev->flags & F_SVID_RND)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200673 seq_puts(seq, "SVID_RND ");
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700674
Robert Olssone99b99b2010-03-18 22:44:30 +0000675 if (pkt_dev->flags & F_NODE)
Thomas Graf97dc48e2014-05-16 23:28:54 +0200676 seq_puts(seq, "NODE_ALLOC ");
Robert Olssone99b99b2010-03-18 22:44:30 +0000677
Luiz Capitulino222f1802006-03-20 22:16:13 -0800678 seq_puts(seq, "\n");
679
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000680 /* not really stopped, more like last-running-at */
Daniel Borkmann398f3822012-10-28 08:27:19 +0000681 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000682 idle = pkt_dev->idle_acc;
683 do_div(idle, NSEC_PER_USEC);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800684
685 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000686 "Current:\n pkts-sofar: %llu errors: %llu\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800687 (unsigned long long)pkt_dev->sofar,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000688 (unsigned long long)pkt_dev->errors);
689
690 seq_printf(seq,
691 " started: %lluus stopped: %lluus idle: %lluus\n",
692 (unsigned long long) ktime_to_us(pkt_dev->started_at),
693 (unsigned long long) ktime_to_us(stopped),
694 (unsigned long long) idle);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800695
696 seq_printf(seq,
697 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700698 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
699 pkt_dev->cur_src_mac_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700
Luiz Capitulino222f1802006-03-20 22:16:13 -0800701 if (pkt_dev->flags & F_IPV6) {
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000702 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
703 &pkt_dev->cur_in6_saddr,
704 &pkt_dev->cur_in6_daddr);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800705 } else
Amerigo Wang0373a942012-10-09 17:48:18 +0000706 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
707 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
Luiz Capitulino222f1802006-03-20 22:16:13 -0800709 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700710 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711
Robert Olsson45b270f2007-08-28 15:45:55 -0700712 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
713
Luiz Capitulino222f1802006-03-20 22:16:13 -0800714 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
716 if (pkt_dev->result[0])
Luiz Capitulino222f1802006-03-20 22:16:13 -0800717 seq_printf(seq, "Result: %s\n", pkt_dev->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 else
Thomas Graf97dc48e2014-05-16 23:28:54 +0200719 seq_puts(seq, "Result: Idle\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -0700721 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722}
723
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800724
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000725static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
726 __u32 *num)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800727{
728 int i = 0;
729 *num = 0;
730
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700731 for (; i < maxlen; i++) {
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000732 int value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800733 char c;
734 *num <<= 4;
735 if (get_user(c, &user_buffer[i]))
736 return -EFAULT;
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000737 value = hex_to_bin(c);
738 if (value >= 0)
739 *num |= value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800740 else
741 break;
742 }
743 return i;
744}
745
Luiz Capitulino222f1802006-03-20 22:16:13 -0800746static int count_trail_chars(const char __user * user_buffer,
747 unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748{
749 int i;
750
751 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800752 char c;
753 if (get_user(c, &user_buffer[i]))
754 return -EFAULT;
755 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 case '\"':
757 case '\n':
758 case '\r':
759 case '\t':
760 case ' ':
761 case '=':
762 break;
763 default:
764 goto done;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700765 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 }
767done:
768 return i;
769}
770
Paul Gortmakerbf0813b2012-01-19 15:40:06 +0000771static long num_arg(const char __user *user_buffer, unsigned long maxlen,
772 unsigned long *num)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000774 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 *num = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800776
Paul Gortmakerd6182222010-10-18 12:14:44 +0000777 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800778 char c;
779 if (get_user(c, &user_buffer[i]))
780 return -EFAULT;
781 if ((c >= '0') && (c <= '9')) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 *num *= 10;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800783 *num += c - '0';
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 } else
785 break;
786 }
787 return i;
788}
789
Luiz Capitulino222f1802006-03-20 22:16:13 -0800790static int strn_len(const char __user * user_buffer, unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000792 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
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 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 case '\"':
800 case '\n':
801 case '\r':
802 case '\t':
803 case ' ':
804 goto done_str;
805 break;
806 default:
807 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700808 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 }
810done_str:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 return i;
812}
813
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800814static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
815{
Eric Dumazet95c96172012-04-15 05:58:06 +0000816 unsigned int n = 0;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800817 char c;
818 ssize_t i = 0;
819 int len;
820
821 pkt_dev->nr_labels = 0;
822 do {
823 __u32 tmp;
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700824 len = hex32_arg(&buffer[i], 8, &tmp);
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800825 if (len <= 0)
826 return len;
827 pkt_dev->labels[n] = htonl(tmp);
828 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
829 pkt_dev->flags |= F_MPLS_RND;
830 i += len;
831 if (get_user(c, &buffer[i]))
832 return -EFAULT;
833 i++;
834 n++;
835 if (n >= MAX_MPLS_LABELS)
836 return -E2BIG;
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700837 } while (c == ',');
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800838
839 pkt_dev->nr_labels = n;
840 return i;
841}
842
Luiz Capitulino222f1802006-03-20 22:16:13 -0800843static ssize_t pktgen_if_write(struct file *file,
844 const char __user * user_buffer, size_t count,
845 loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846{
Joe Perches8a994a72010-07-12 10:50:23 +0000847 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800848 struct pktgen_dev *pkt_dev = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +0000849 int i, max, len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 char name[16], valstr[32];
851 unsigned long value = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800852 char *pg_result = NULL;
853 int tmp = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 char buf[128];
Luiz Capitulino222f1802006-03-20 22:16:13 -0800855
856 pg_result = &(pkt_dev->result[0]);
857
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 if (count < 1) {
Joe Perchesf9467ea2010-06-21 12:29:14 +0000859 pr_warning("wrong command format\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 return -EINVAL;
861 }
Luiz Capitulino222f1802006-03-20 22:16:13 -0800862
Paul Gortmakerd6182222010-10-18 12:14:44 +0000863 max = count;
864 tmp = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800865 if (tmp < 0) {
Joe Perchesf9467ea2010-06-21 12:29:14 +0000866 pr_warning("illegal format\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800867 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 }
Paul Gortmakerd6182222010-10-18 12:14:44 +0000869 i = tmp;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800870
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 /* Read variable name */
872
873 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000874 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800875 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000876
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 memset(name, 0, sizeof(name));
Luiz Capitulino222f1802006-03-20 22:16:13 -0800878 if (copy_from_user(name, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 return -EFAULT;
880 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800881
882 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800884 if (len < 0)
885 return len;
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 i += len;
888
889 if (debug) {
Dmitry Torokhov86c2c0a2010-11-06 20:11:38 +0000890 size_t copy = min_t(size_t, count, 1023);
Nelson Elhage448d7b52010-10-28 11:31:07 -0700891 char tb[copy + 1];
892 if (copy_from_user(tb, user_buffer, copy))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 return -EFAULT;
Nelson Elhage448d7b52010-10-28 11:31:07 -0700894 tb[copy] = 0;
Joe Perchesf342cda2012-05-16 17:50:41 +0000895 pr_debug("%s,%lu buffer -:%s:-\n",
896 name, (unsigned long)count, tb);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800897 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898
899 if (!strcmp(name, "min_pkt_size")) {
900 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000901 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800902 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800905 if (value < 14 + 20 + 8)
906 value = 14 + 20 + 8;
907 if (value != pkt_dev->min_pkt_size) {
908 pkt_dev->min_pkt_size = value;
909 pkt_dev->cur_pkt_size = value;
910 }
911 sprintf(pg_result, "OK: min_pkt_size=%u",
912 pkt_dev->min_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 return count;
914 }
915
Luiz Capitulino222f1802006-03-20 22:16:13 -0800916 if (!strcmp(name, "max_pkt_size")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000918 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800919 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000920
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800922 if (value < 14 + 20 + 8)
923 value = 14 + 20 + 8;
924 if (value != pkt_dev->max_pkt_size) {
925 pkt_dev->max_pkt_size = value;
926 pkt_dev->cur_pkt_size = value;
927 }
928 sprintf(pg_result, "OK: max_pkt_size=%u",
929 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 return count;
931 }
932
Luiz Capitulino222f1802006-03-20 22:16:13 -0800933 /* Shortcut for min = max */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934
935 if (!strcmp(name, "pkt_size")) {
936 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000937 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800938 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000939
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800941 if (value < 14 + 20 + 8)
942 value = 14 + 20 + 8;
943 if (value != pkt_dev->min_pkt_size) {
944 pkt_dev->min_pkt_size = value;
945 pkt_dev->max_pkt_size = value;
946 pkt_dev->cur_pkt_size = value;
947 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
949 return count;
950 }
951
Luiz Capitulino222f1802006-03-20 22:16:13 -0800952 if (!strcmp(name, "debug")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000954 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800955 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000956
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800958 debug = value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959 sprintf(pg_result, "OK: debug=%u", debug);
960 return count;
961 }
962
Luiz Capitulino222f1802006-03-20 22:16:13 -0800963 if (!strcmp(name, "frags")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000965 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800966 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000967
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 i += len;
969 pkt_dev->nfrags = value;
970 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
971 return count;
972 }
973 if (!strcmp(name, "delay")) {
974 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000975 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800976 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000977
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 i += len;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000979 if (value == 0x7FFFFFFF)
980 pkt_dev->delay = ULLONG_MAX;
981 else
Eric Dumazet9240d712009-10-03 01:39:18 +0000982 pkt_dev->delay = (u64)value;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000983
984 sprintf(pg_result, "OK: delay=%llu",
985 (unsigned long long) pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 return count;
987 }
Daniel Turull43d28b62010-06-09 22:49:57 +0000988 if (!strcmp(name, "rate")) {
989 len = num_arg(&user_buffer[i], 10, &value);
990 if (len < 0)
991 return len;
992
993 i += len;
994 if (!value)
995 return len;
996 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
997 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +0000998 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +0000999
1000 sprintf(pg_result, "OK: rate=%lu", value);
1001 return count;
1002 }
1003 if (!strcmp(name, "ratep")) {
1004 len = num_arg(&user_buffer[i], 10, &value);
1005 if (len < 0)
1006 return len;
1007
1008 i += len;
1009 if (!value)
1010 return len;
1011 pkt_dev->delay = NSEC_PER_SEC/value;
1012 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001013 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +00001014
1015 sprintf(pg_result, "OK: rate=%lu", value);
1016 return count;
1017 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001018 if (!strcmp(name, "udp_src_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001020 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001021 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001022
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001024 if (value != pkt_dev->udp_src_min) {
1025 pkt_dev->udp_src_min = value;
1026 pkt_dev->cur_udp_src = value;
1027 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1029 return count;
1030 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001031 if (!strcmp(name, "udp_dst_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001033 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001034 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001035
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001037 if (value != pkt_dev->udp_dst_min) {
1038 pkt_dev->udp_dst_min = value;
1039 pkt_dev->cur_udp_dst = value;
1040 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1042 return count;
1043 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001044 if (!strcmp(name, "udp_src_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001046 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001047 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001048
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001050 if (value != pkt_dev->udp_src_max) {
1051 pkt_dev->udp_src_max = value;
1052 pkt_dev->cur_udp_src = value;
1053 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1055 return count;
1056 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001057 if (!strcmp(name, "udp_dst_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001059 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001060 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001061
Linus Torvalds1da177e2005-04-16 15:20:36 -07001062 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001063 if (value != pkt_dev->udp_dst_max) {
1064 pkt_dev->udp_dst_max = value;
1065 pkt_dev->cur_udp_dst = value;
1066 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1068 return count;
1069 }
1070 if (!strcmp(name, "clone_skb")) {
1071 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001072 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001073 return len;
Neil Hormand8873312011-07-26 06:05:37 +00001074 if ((value > 0) &&
1075 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1076 return -ENOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001078 pkt_dev->clone_skb = value;
1079
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1081 return count;
1082 }
1083 if (!strcmp(name, "count")) {
1084 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001085 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001086 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001087
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088 i += len;
1089 pkt_dev->count = value;
1090 sprintf(pg_result, "OK: count=%llu",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001091 (unsigned long long)pkt_dev->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 return count;
1093 }
1094 if (!strcmp(name, "src_mac_count")) {
1095 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001096 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001097 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001098
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 i += len;
1100 if (pkt_dev->src_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001101 pkt_dev->src_mac_count = value;
1102 pkt_dev->cur_src_mac_offset = 0;
1103 }
1104 sprintf(pg_result, "OK: src_mac_count=%d",
1105 pkt_dev->src_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 return count;
1107 }
1108 if (!strcmp(name, "dst_mac_count")) {
1109 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001110 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001111 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001112
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 i += len;
1114 if (pkt_dev->dst_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001115 pkt_dev->dst_mac_count = value;
1116 pkt_dev->cur_dst_mac_offset = 0;
1117 }
1118 sprintf(pg_result, "OK: dst_mac_count=%d",
1119 pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 return count;
1121 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001122 if (!strcmp(name, "node")) {
1123 len = num_arg(&user_buffer[i], 10, &value);
1124 if (len < 0)
1125 return len;
1126
1127 i += len;
1128
1129 if (node_possible(value)) {
1130 pkt_dev->node = value;
1131 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
Eric Dumazet26ad7872011-01-25 13:26:05 -08001132 if (pkt_dev->page) {
1133 put_page(pkt_dev->page);
1134 pkt_dev->page = NULL;
1135 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001136 }
1137 else
1138 sprintf(pg_result, "ERROR: node not possible");
1139 return count;
1140 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 if (!strcmp(name, "flag")) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001142 char f[32];
1143 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001145 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001146 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001147
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148 if (copy_from_user(f, &user_buffer[i], len))
1149 return -EFAULT;
1150 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001151 if (strcmp(f, "IPSRC_RND") == 0)
1152 pkt_dev->flags |= F_IPSRC_RND;
1153
1154 else if (strcmp(f, "!IPSRC_RND") == 0)
1155 pkt_dev->flags &= ~F_IPSRC_RND;
1156
1157 else if (strcmp(f, "TXSIZE_RND") == 0)
1158 pkt_dev->flags |= F_TXSIZE_RND;
1159
1160 else if (strcmp(f, "!TXSIZE_RND") == 0)
1161 pkt_dev->flags &= ~F_TXSIZE_RND;
1162
1163 else if (strcmp(f, "IPDST_RND") == 0)
1164 pkt_dev->flags |= F_IPDST_RND;
1165
1166 else if (strcmp(f, "!IPDST_RND") == 0)
1167 pkt_dev->flags &= ~F_IPDST_RND;
1168
1169 else if (strcmp(f, "UDPSRC_RND") == 0)
1170 pkt_dev->flags |= F_UDPSRC_RND;
1171
1172 else if (strcmp(f, "!UDPSRC_RND") == 0)
1173 pkt_dev->flags &= ~F_UDPSRC_RND;
1174
1175 else if (strcmp(f, "UDPDST_RND") == 0)
1176 pkt_dev->flags |= F_UDPDST_RND;
1177
1178 else if (strcmp(f, "!UDPDST_RND") == 0)
1179 pkt_dev->flags &= ~F_UDPDST_RND;
1180
1181 else if (strcmp(f, "MACSRC_RND") == 0)
1182 pkt_dev->flags |= F_MACSRC_RND;
1183
1184 else if (strcmp(f, "!MACSRC_RND") == 0)
1185 pkt_dev->flags &= ~F_MACSRC_RND;
1186
1187 else if (strcmp(f, "MACDST_RND") == 0)
1188 pkt_dev->flags |= F_MACDST_RND;
1189
1190 else if (strcmp(f, "!MACDST_RND") == 0)
1191 pkt_dev->flags &= ~F_MACDST_RND;
1192
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001193 else if (strcmp(f, "MPLS_RND") == 0)
1194 pkt_dev->flags |= F_MPLS_RND;
1195
1196 else if (strcmp(f, "!MPLS_RND") == 0)
1197 pkt_dev->flags &= ~F_MPLS_RND;
1198
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001199 else if (strcmp(f, "VID_RND") == 0)
1200 pkt_dev->flags |= F_VID_RND;
1201
1202 else if (strcmp(f, "!VID_RND") == 0)
1203 pkt_dev->flags &= ~F_VID_RND;
1204
1205 else if (strcmp(f, "SVID_RND") == 0)
1206 pkt_dev->flags |= F_SVID_RND;
1207
1208 else if (strcmp(f, "!SVID_RND") == 0)
1209 pkt_dev->flags &= ~F_SVID_RND;
1210
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07001211 else if (strcmp(f, "FLOW_SEQ") == 0)
1212 pkt_dev->flags |= F_FLOW_SEQ;
1213
Robert Olsson45b270f2007-08-28 15:45:55 -07001214 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1215 pkt_dev->flags |= F_QUEUE_MAP_RND;
1216
1217 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1218 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
Robert Olssone6fce5b2008-08-07 02:23:01 -07001219
1220 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1221 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1222
1223 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1224 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07001225#ifdef CONFIG_XFRM
1226 else if (strcmp(f, "IPSEC") == 0)
1227 pkt_dev->flags |= F_IPSEC_ON;
1228#endif
1229
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001230 else if (strcmp(f, "!IPV6") == 0)
1231 pkt_dev->flags &= ~F_IPV6;
1232
Robert Olssone99b99b2010-03-18 22:44:30 +00001233 else if (strcmp(f, "NODE_ALLOC") == 0)
1234 pkt_dev->flags |= F_NODE;
1235
1236 else if (strcmp(f, "!NODE_ALLOC") == 0)
1237 pkt_dev->flags &= ~F_NODE;
1238
Thomas Grafc26bf4a2013-07-25 18:12:18 +02001239 else if (strcmp(f, "UDPCSUM") == 0)
1240 pkt_dev->flags |= F_UDPCSUM;
1241
1242 else if (strcmp(f, "!UDPCSUM") == 0)
1243 pkt_dev->flags &= ~F_UDPCSUM;
1244
Luiz Capitulino222f1802006-03-20 22:16:13 -08001245 else {
1246 sprintf(pg_result,
1247 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1248 f,
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001249 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
Mathias Krause72f8e062014-02-21 21:38:36 +01001250 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1251 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1252 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
1253#ifdef CONFIG_XFRM
1254 "IPSEC, "
1255#endif
1256 "NODE_ALLOC\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001257 return count;
1258 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1260 return count;
1261 }
1262 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1263 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001264 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001265 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266
Luiz Capitulino222f1802006-03-20 22:16:13 -08001267 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001269 buf[len] = 0;
1270 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1271 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1272 strncpy(pkt_dev->dst_min, buf, len);
1273 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1274 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1275 }
1276 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001277 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001278 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1280 return count;
1281 }
1282 if (!strcmp(name, "dst_max")) {
1283 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001284 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001285 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001286
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287
Luiz Capitulino222f1802006-03-20 22:16:13 -08001288 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 return -EFAULT;
1290
Luiz Capitulino222f1802006-03-20 22:16:13 -08001291 buf[len] = 0;
1292 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1293 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1294 strncpy(pkt_dev->dst_max, buf, len);
1295 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1296 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1297 }
1298 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001299 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300 i += len;
1301 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1302 return count;
1303 }
1304 if (!strcmp(name, "dst6")) {
1305 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001306 if (len < 0)
1307 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308
1309 pkt_dev->flags |= F_IPV6;
1310
Luiz Capitulino222f1802006-03-20 22:16:13 -08001311 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001313 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314
Amerigo Wangc468fb12012-10-09 17:48:20 +00001315 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001316 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001318 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319
Luiz Capitulino222f1802006-03-20 22:16:13 -08001320 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001321 pr_debug("dst6 set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322
Luiz Capitulino222f1802006-03-20 22:16:13 -08001323 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 sprintf(pg_result, "OK: dst6=%s", buf);
1325 return count;
1326 }
1327 if (!strcmp(name, "dst6_min")) {
1328 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001329 if (len < 0)
1330 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331
1332 pkt_dev->flags |= F_IPV6;
1333
Luiz Capitulino222f1802006-03-20 22:16:13 -08001334 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001336 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
Amerigo Wangc468fb12012-10-09 17:48:20 +00001338 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001339 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001341 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001342 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001343 pr_debug("dst6_min set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344
Luiz Capitulino222f1802006-03-20 22:16:13 -08001345 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001346 sprintf(pg_result, "OK: dst6_min=%s", buf);
1347 return count;
1348 }
1349 if (!strcmp(name, "dst6_max")) {
1350 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001351 if (len < 0)
1352 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353
1354 pkt_dev->flags |= F_IPV6;
1355
Luiz Capitulino222f1802006-03-20 22:16:13 -08001356 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001358 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359
Amerigo Wangc468fb12012-10-09 17:48:20 +00001360 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001361 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362
Luiz Capitulino222f1802006-03-20 22:16:13 -08001363 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001364 pr_debug("dst6_max set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365
Luiz Capitulino222f1802006-03-20 22:16:13 -08001366 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 sprintf(pg_result, "OK: dst6_max=%s", buf);
1368 return count;
1369 }
1370 if (!strcmp(name, "src6")) {
1371 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001372 if (len < 0)
1373 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001374
1375 pkt_dev->flags |= F_IPV6;
1376
Luiz Capitulino222f1802006-03-20 22:16:13 -08001377 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001379 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380
Amerigo Wangc468fb12012-10-09 17:48:20 +00001381 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001382 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00001384 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385
Luiz Capitulino222f1802006-03-20 22:16:13 -08001386 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001387 pr_debug("src6 set to: %s\n", buf);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001388
1389 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 sprintf(pg_result, "OK: src6=%s", buf);
1391 return count;
1392 }
1393 if (!strcmp(name, "src_min")) {
1394 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001395 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001396 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001397
Luiz Capitulino222f1802006-03-20 22:16:13 -08001398 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001400 buf[len] = 0;
1401 if (strcmp(buf, pkt_dev->src_min) != 0) {
1402 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1403 strncpy(pkt_dev->src_min, buf, len);
1404 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1405 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1406 }
1407 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001408 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409 i += len;
1410 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1411 return count;
1412 }
1413 if (!strcmp(name, "src_max")) {
1414 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001415 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001416 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001417
Luiz Capitulino222f1802006-03-20 22:16:13 -08001418 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001420 buf[len] = 0;
1421 if (strcmp(buf, pkt_dev->src_max) != 0) {
1422 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1423 strncpy(pkt_dev->src_max, buf, len);
1424 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1425 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1426 }
1427 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001428 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 i += len;
1430 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1431 return count;
1432 }
1433 if (!strcmp(name, "dst_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001435 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001436 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001437
Linus Torvalds1da177e2005-04-16 15:20:36 -07001438 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001439 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001442 if (!mac_pton(valstr, pkt_dev->dst_mac))
1443 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444 /* Set up Dest MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08001445 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001446
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001447 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 return count;
1449 }
1450 if (!strcmp(name, "src_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001452 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001453 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001454
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001456 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001459 if (!mac_pton(valstr, pkt_dev->src_mac))
1460 return -EINVAL;
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001461 /* Set up Src MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08001462 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001463
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001464 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 return count;
1466 }
1467
Luiz Capitulino222f1802006-03-20 22:16:13 -08001468 if (!strcmp(name, "clear_counters")) {
1469 pktgen_clear_counters(pkt_dev);
1470 sprintf(pg_result, "OK: Clearing counters.\n");
1471 return count;
1472 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473
1474 if (!strcmp(name, "flows")) {
1475 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001476 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001477 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001478
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479 i += len;
1480 if (value > MAX_CFLOWS)
1481 value = MAX_CFLOWS;
1482
1483 pkt_dev->cflows = value;
1484 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1485 return count;
1486 }
Fan Du6bae9192014-01-10 14:39:13 +08001487#ifdef CONFIG_XFRM
Fan Dude4aee72014-01-03 11:18:30 +08001488 if (!strcmp(name, "spi")) {
1489 len = num_arg(&user_buffer[i], 10, &value);
1490 if (len < 0)
1491 return len;
1492
1493 i += len;
1494 pkt_dev->spi = value;
1495 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1496 return count;
1497 }
Fan Du6bae9192014-01-10 14:39:13 +08001498#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499 if (!strcmp(name, "flowlen")) {
1500 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001501 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001502 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001503
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 i += len;
1505 pkt_dev->lflow = value;
1506 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1507 return count;
1508 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001509
Robert Olsson45b270f2007-08-28 15:45:55 -07001510 if (!strcmp(name, "queue_map_min")) {
1511 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001512 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001513 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001514
Robert Olsson45b270f2007-08-28 15:45:55 -07001515 i += len;
1516 pkt_dev->queue_map_min = value;
1517 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1518 return count;
1519 }
1520
1521 if (!strcmp(name, "queue_map_max")) {
1522 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001523 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001524 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001525
Robert Olsson45b270f2007-08-28 15:45:55 -07001526 i += len;
1527 pkt_dev->queue_map_max = value;
1528 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1529 return count;
1530 }
1531
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001532 if (!strcmp(name, "mpls")) {
Eric Dumazet95c96172012-04-15 05:58:06 +00001533 unsigned int n, cnt;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001534
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001535 len = get_labels(&user_buffer[i], pkt_dev);
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001536 if (len < 0)
1537 return len;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001538 i += len;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001539 cnt = sprintf(pg_result, "OK: mpls=");
Stephen Hemmingere71a4782007-04-10 20:10:33 -07001540 for (n = 0; n < pkt_dev->nr_labels; n++)
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001541 cnt += sprintf(pg_result + cnt,
1542 "%08x%s", ntohl(pkt_dev->labels[n]),
1543 n == pkt_dev->nr_labels-1 ? "" : ",");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001544
1545 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1546 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1547 pkt_dev->svlan_id = 0xffff;
1548
1549 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001550 pr_debug("VLAN/SVLAN auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001551 }
1552 return count;
1553 }
1554
1555 if (!strcmp(name, "vlan_id")) {
1556 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001557 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001558 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001559
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001560 i += len;
1561 if (value <= 4095) {
1562 pkt_dev->vlan_id = value; /* turn on VLAN */
1563
1564 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001565 pr_debug("VLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001566
1567 if (debug && pkt_dev->nr_labels)
Joe Perchesf342cda2012-05-16 17:50:41 +00001568 pr_debug("MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001569
1570 pkt_dev->nr_labels = 0; /* turn off MPLS */
1571 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1572 } else {
1573 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1574 pkt_dev->svlan_id = 0xffff;
1575
1576 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001577 pr_debug("VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001578 }
1579 return count;
1580 }
1581
1582 if (!strcmp(name, "vlan_p")) {
1583 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001584 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001585 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001586
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001587 i += len;
1588 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1589 pkt_dev->vlan_p = value;
1590 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1591 } else {
1592 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1593 }
1594 return count;
1595 }
1596
1597 if (!strcmp(name, "vlan_cfi")) {
1598 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001599 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001600 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001601
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001602 i += len;
1603 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1604 pkt_dev->vlan_cfi = value;
1605 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1606 } else {
1607 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1608 }
1609 return count;
1610 }
1611
1612 if (!strcmp(name, "svlan_id")) {
1613 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001614 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001615 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001616
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001617 i += len;
1618 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1619 pkt_dev->svlan_id = value; /* turn on SVLAN */
1620
1621 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001622 pr_debug("SVLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001623
1624 if (debug && pkt_dev->nr_labels)
Joe Perchesf342cda2012-05-16 17:50:41 +00001625 pr_debug("MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001626
1627 pkt_dev->nr_labels = 0; /* turn off MPLS */
1628 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1629 } else {
1630 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1631 pkt_dev->svlan_id = 0xffff;
1632
1633 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001634 pr_debug("VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001635 }
1636 return count;
1637 }
1638
1639 if (!strcmp(name, "svlan_p")) {
1640 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001641 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001642 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001643
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001644 i += len;
1645 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1646 pkt_dev->svlan_p = value;
1647 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1648 } else {
1649 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1650 }
1651 return count;
1652 }
1653
1654 if (!strcmp(name, "svlan_cfi")) {
1655 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001656 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001657 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001658
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001659 i += len;
1660 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1661 pkt_dev->svlan_cfi = value;
1662 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1663 } else {
1664 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1665 }
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001666 return count;
1667 }
1668
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001669 if (!strcmp(name, "tos")) {
1670 __u32 tmp_value = 0;
1671 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001672 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001673 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001674
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001675 i += len;
1676 if (len == 2) {
1677 pkt_dev->tos = tmp_value;
1678 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1679 } else {
1680 sprintf(pg_result, "ERROR: tos must be 00-ff");
1681 }
1682 return count;
1683 }
1684
1685 if (!strcmp(name, "traffic_class")) {
1686 __u32 tmp_value = 0;
1687 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001688 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001689 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001690
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001691 i += len;
1692 if (len == 2) {
1693 pkt_dev->traffic_class = tmp_value;
1694 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1695 } else {
1696 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1697 }
1698 return count;
1699 }
1700
John Fastabend9e50e3a2010-11-16 19:12:28 +00001701 if (!strcmp(name, "skb_priority")) {
1702 len = num_arg(&user_buffer[i], 9, &value);
1703 if (len < 0)
1704 return len;
1705
1706 i += len;
1707 pkt_dev->skb_priority = value;
1708 sprintf(pg_result, "OK: skb_priority=%i",
1709 pkt_dev->skb_priority);
1710 return count;
1711 }
1712
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1714 return -EINVAL;
1715}
1716
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001717static int pktgen_if_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718{
Al Virod9dda782013-03-31 18:16:14 -04001719 return single_open(file, pktgen_if_show, PDE_DATA(inode));
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001720}
1721
Arjan van de Ven9a321442007-02-12 00:55:35 -08001722static const struct file_operations pktgen_if_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001723 .owner = THIS_MODULE,
1724 .open = pktgen_if_open,
1725 .read = seq_read,
1726 .llseek = seq_lseek,
1727 .write = pktgen_if_write,
1728 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001729};
1730
1731static int pktgen_thread_show(struct seq_file *seq, void *v)
1732{
Luiz Capitulino222f1802006-03-20 22:16:13 -08001733 struct pktgen_thread *t = seq->private;
Stephen Hemminger648fda72009-08-27 13:55:07 +00001734 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001736 BUG_ON(!t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001737
Thomas Graf97dc48e2014-05-16 23:28:54 +02001738 seq_puts(seq, "Running: ");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001739
1740 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08001741 list_for_each_entry(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001742 if (pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001743 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001744
Thomas Graf97dc48e2014-05-16 23:28:54 +02001745 seq_puts(seq, "\nStopped: ");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001746
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08001747 list_for_each_entry(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001748 if (!pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001749 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750
1751 if (t->result[0])
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001752 seq_printf(seq, "\nResult: %s\n", t->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001753 else
Thomas Graf97dc48e2014-05-16 23:28:54 +02001754 seq_puts(seq, "\nResult: NA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001755
Luiz Capitulino222f1802006-03-20 22:16:13 -08001756 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001757
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001758 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001759}
1760
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001761static ssize_t pktgen_thread_write(struct file *file,
Luiz Capitulino222f1802006-03-20 22:16:13 -08001762 const char __user * user_buffer,
1763 size_t count, loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764{
Joe Perches8a994a72010-07-12 10:50:23 +00001765 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001766 struct pktgen_thread *t = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +00001767 int i, max, len, ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001768 char name[40];
Luiz Capitulino222f1802006-03-20 22:16:13 -08001769 char *pg_result;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001770
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771 if (count < 1) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001772 // sprintf(pg_result, "Wrong command format");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 return -EINVAL;
1774 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001775
Paul Gortmakerd6182222010-10-18 12:14:44 +00001776 max = count;
1777 len = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001778 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001779 return len;
1780
Paul Gortmakerd6182222010-10-18 12:14:44 +00001781 i = len;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001782
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783 /* Read variable name */
1784
1785 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001786 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001787 return len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001788
Linus Torvalds1da177e2005-04-16 15:20:36 -07001789 memset(name, 0, sizeof(name));
1790 if (copy_from_user(name, &user_buffer[i], len))
1791 return -EFAULT;
1792 i += len;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001793
Luiz Capitulino222f1802006-03-20 22:16:13 -08001794 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001796 if (len < 0)
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001797 return len;
1798
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 i += len;
1800
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001801 if (debug)
Joe Perchesf342cda2012-05-16 17:50:41 +00001802 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803
Luiz Capitulino222f1802006-03-20 22:16:13 -08001804 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001805 pr_err("ERROR: No thread\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 ret = -EINVAL;
1807 goto out;
1808 }
1809
1810 pg_result = &(t->result[0]);
1811
Luiz Capitulino222f1802006-03-20 22:16:13 -08001812 if (!strcmp(name, "add_device")) {
1813 char f[32];
1814 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001815 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001816 if (len < 0) {
1817 ret = len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 goto out;
1819 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001820 if (copy_from_user(f, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001821 return -EFAULT;
1822 i += len;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001823 mutex_lock(&pktgen_thread_lock);
Cong Wang604dfd62013-01-27 21:14:08 +00001824 ret = pktgen_add_device(t, f);
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001825 mutex_unlock(&pktgen_thread_lock);
Cong Wang604dfd62013-01-27 21:14:08 +00001826 if (!ret) {
1827 ret = count;
1828 sprintf(pg_result, "OK: add_device=%s", f);
1829 } else
1830 sprintf(pg_result, "ERROR: can not add device %s", f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001831 goto out;
1832 }
1833
Luiz Capitulino222f1802006-03-20 22:16:13 -08001834 if (!strcmp(name, "rem_device_all")) {
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001835 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001836 t->control |= T_REMDEVALL;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001837 mutex_unlock(&pktgen_thread_lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001838 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839 ret = count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001840 sprintf(pg_result, "OK: rem_device_all");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 goto out;
1842 }
1843
Luiz Capitulino222f1802006-03-20 22:16:13 -08001844 if (!strcmp(name, "max_before_softirq")) {
Robert Olssonb1639112007-08-28 15:46:58 -07001845 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001846 ret = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847 goto out;
1848 }
1849
1850 ret = -EINVAL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001851out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 return ret;
1853}
1854
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001855static int pktgen_thread_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001856{
Al Virod9dda782013-03-31 18:16:14 -04001857 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858}
1859
Arjan van de Ven9a321442007-02-12 00:55:35 -08001860static const struct file_operations pktgen_thread_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001861 .owner = THIS_MODULE,
1862 .open = pktgen_thread_open,
1863 .read = seq_read,
1864 .llseek = seq_lseek,
1865 .write = pktgen_thread_write,
1866 .release = single_release,
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07001867};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868
1869/* Think find or remove for NN */
Cong Wang4e58a022013-01-28 19:55:53 +00001870static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1871 const char *ifname, int remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872{
1873 struct pktgen_thread *t;
1874 struct pktgen_dev *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08001875 bool exact = (remove == FIND);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876
Cong Wang4e58a022013-01-28 19:55:53 +00001877 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Eric Dumazet3e984842009-11-24 14:50:53 -08001878 pkt_dev = pktgen_find_dev(t, ifname, exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 if (pkt_dev) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001880 if (remove) {
1881 if_lock(t);
1882 pkt_dev->removal_mark = 1;
1883 t->control |= T_REMDEV;
1884 if_unlock(t);
1885 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886 break;
1887 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001888 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001889 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890}
1891
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001892/*
1893 * mark a device for removal
1894 */
Cong Wang4e58a022013-01-28 19:55:53 +00001895static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896{
1897 struct pktgen_dev *pkt_dev = NULL;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001898 const int max_tries = 10, msec_per_try = 125;
1899 int i = 0;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001900
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001901 mutex_lock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001902 pr_debug("%s: marking %s for removal\n", __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001903
Luiz Capitulino222f1802006-03-20 22:16:13 -08001904 while (1) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001905
Cong Wang4e58a022013-01-28 19:55:53 +00001906 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001907 if (pkt_dev == NULL)
1908 break; /* success */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001909
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001910 mutex_unlock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001911 pr_debug("%s: waiting for %s to disappear....\n",
1912 __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001913 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001914 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001915
1916 if (++i >= max_tries) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001917 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1918 __func__, msec_per_try * i, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001919 break;
1920 }
1921
1922 }
1923
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001924 mutex_unlock(&pktgen_thread_lock);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001925}
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001926
Cong Wang4e58a022013-01-28 19:55:53 +00001927static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
Stephen Hemminger39df2322007-03-04 16:11:51 -08001928{
1929 struct pktgen_thread *t;
1930
Cong Wang4e58a022013-01-28 19:55:53 +00001931 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08001932 struct pktgen_dev *pkt_dev;
1933
1934 list_for_each_entry(pkt_dev, &t->if_list, list) {
1935 if (pkt_dev->odev != dev)
1936 continue;
1937
David Howellsa8ca16e2013-04-12 17:27:28 +01001938 proc_remove(pkt_dev->entry);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001939
Alexey Dobriyan29753152009-08-28 23:34:43 -07001940 pkt_dev->entry = proc_create_data(dev->name, 0600,
Cong Wang4e58a022013-01-28 19:55:53 +00001941 pn->proc_dir,
Alexey Dobriyan29753152009-08-28 23:34:43 -07001942 &pktgen_if_fops,
1943 pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001944 if (!pkt_dev->entry)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001945 pr_err("can't move proc entry for '%s'\n",
1946 dev->name);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001947 break;
1948 }
1949 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001950}
1951
Luiz Capitulino222f1802006-03-20 22:16:13 -08001952static int pktgen_device_event(struct notifier_block *unused,
1953 unsigned long event, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001954{
Jiri Pirko351638e2013-05-28 01:30:21 +00001955 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
Cong Wang4e58a022013-01-28 19:55:53 +00001956 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957
Cong Wang4e58a022013-01-28 19:55:53 +00001958 if (pn->pktgen_exiting)
Eric W. Biedermane9dc8652007-09-12 13:02:17 +02001959 return NOTIFY_DONE;
1960
Linus Torvalds1da177e2005-04-16 15:20:36 -07001961 /* It is OK that we do not hold the group lock right now,
1962 * as we run under the RTNL lock.
1963 */
1964
1965 switch (event) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08001966 case NETDEV_CHANGENAME:
Cong Wang4e58a022013-01-28 19:55:53 +00001967 pktgen_change_name(pn, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001968 break;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001969
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 case NETDEV_UNREGISTER:
Cong Wang4e58a022013-01-28 19:55:53 +00001971 pktgen_mark_device(pn, dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001972 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -07001973 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001974
1975 return NOTIFY_DONE;
1976}
1977
Cong Wang4e58a022013-01-28 19:55:53 +00001978static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
1979 struct pktgen_dev *pkt_dev,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001980 const char *ifname)
Robert Olssone6fce5b2008-08-07 02:23:01 -07001981{
1982 char b[IFNAMSIZ+5];
Paul Gortmakerd6182222010-10-18 12:14:44 +00001983 int i;
Robert Olssone6fce5b2008-08-07 02:23:01 -07001984
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001985 for (i = 0; ifname[i] != '@'; i++) {
1986 if (i == IFNAMSIZ)
Robert Olssone6fce5b2008-08-07 02:23:01 -07001987 break;
1988
1989 b[i] = ifname[i];
1990 }
1991 b[i] = 0;
1992
Cong Wang4e58a022013-01-28 19:55:53 +00001993 return dev_get_by_name(pn->net, b);
Robert Olssone6fce5b2008-08-07 02:23:01 -07001994}
1995
1996
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997/* Associate pktgen_dev with a device. */
1998
Cong Wang4e58a022013-01-28 19:55:53 +00001999static int pktgen_setup_dev(const struct pktgen_net *pn,
2000 struct pktgen_dev *pkt_dev, const char *ifname)
Luiz Capitulino222f1802006-03-20 22:16:13 -08002001{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002 struct net_device *odev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08002003 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004
2005 /* Clean old setups */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006 if (pkt_dev->odev) {
2007 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002008 pkt_dev->odev = NULL;
2009 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002010
Cong Wang4e58a022013-01-28 19:55:53 +00002011 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002012 if (!odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002013 pr_err("no such netdevice: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002014 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015 }
Stephen Hemminger39df2322007-03-04 16:11:51 -08002016
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017 if (odev->type != ARPHRD_ETHER) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002018 pr_err("not an ethernet device: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002019 err = -EINVAL;
2020 } else if (!netif_running(odev)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002021 pr_err("device is down: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002022 err = -ENETDOWN;
2023 } else {
2024 pkt_dev->odev = odev;
2025 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002026 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002027
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028 dev_put(odev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002029 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030}
2031
2032/* Read pkt_dev from the interface and set up internal pktgen_dev
2033 * structure to have the right information to create/send packets
2034 */
2035static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2036{
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002037 int ntxq;
2038
Luiz Capitulino222f1802006-03-20 22:16:13 -08002039 if (!pkt_dev->odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002040 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08002041 sprintf(pkt_dev->result,
2042 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2043 return;
2044 }
2045
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002046 /* make sure that we don't pick a non-existing transmit queue */
2047 ntxq = pkt_dev->odev->real_num_tx_queues;
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002048
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002049 if (ntxq <= pkt_dev->queue_map_min) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002050 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2051 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2052 pkt_dev->odevname);
Dan Carpenter26e29ee2012-01-06 03:13:47 +00002053 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002054 }
Jesse Brandeburg88271662008-10-28 13:21:51 -07002055 if (pkt_dev->queue_map_max >= ntxq) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002056 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2057 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2058 pkt_dev->odevname);
Dan Carpenter26e29ee2012-01-06 03:13:47 +00002059 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002060 }
2061
Luiz Capitulino222f1802006-03-20 22:16:13 -08002062 /* Default to the interface's mac if not explicitly set. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002063
Kris Katterjohnf404e9a2006-01-17 13:04:57 -08002064 if (is_zero_ether_addr(pkt_dev->src_mac))
Joe Perches9ea08b12014-01-20 09:52:19 -08002065 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066
Luiz Capitulino222f1802006-03-20 22:16:13 -08002067 /* Set up Dest MAC */
Joe Perches9ea08b12014-01-20 09:52:19 -08002068 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069
Luiz Capitulino222f1802006-03-20 22:16:13 -08002070 if (pkt_dev->flags & F_IPV6) {
Amerigo Wang4c139b82012-10-09 17:48:19 +00002071 int i, set = 0, err = 1;
2072 struct inet6_dev *idev;
2073
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002074 if (pkt_dev->min_pkt_size == 0) {
2075 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2076 + sizeof(struct udphdr)
2077 + sizeof(struct pktgen_hdr)
2078 + pkt_dev->pkt_overhead;
2079 }
2080
Luiz Capitulino222f1802006-03-20 22:16:13 -08002081 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2082 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 set = 1;
2084 break;
2085 }
2086
Luiz Capitulino222f1802006-03-20 22:16:13 -08002087 if (!set) {
2088
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 /*
2090 * Use linklevel address if unconfigured.
2091 *
2092 * use ipv6_get_lladdr if/when it's get exported
2093 */
2094
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002095 rcu_read_lock();
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002096 idev = __in6_dev_get(pkt_dev->odev);
2097 if (idev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002098 struct inet6_ifaddr *ifp;
2099
2100 read_lock_bh(&idev->lock);
Amerigo Wang4c139b82012-10-09 17:48:19 +00002101 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2102 if ((ifp->scope & IFA_LINK) &&
Joe Perchesf64f9e72009-11-29 16:55:45 -08002103 !(ifp->flags & IFA_F_TENTATIVE)) {
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00002104 pkt_dev->cur_in6_saddr = ifp->addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 err = 0;
2106 break;
2107 }
2108 }
2109 read_unlock_bh(&idev->lock);
2110 }
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002111 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002112 if (err)
Joe Perchesf9467ea2010-06-21 12:29:14 +00002113 pr_err("ERROR: IPv6 link address not available\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002114 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002115 } else {
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002116 if (pkt_dev->min_pkt_size == 0) {
2117 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2118 + sizeof(struct udphdr)
2119 + sizeof(struct pktgen_hdr)
2120 + pkt_dev->pkt_overhead;
2121 }
2122
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123 pkt_dev->saddr_min = 0;
2124 pkt_dev->saddr_max = 0;
2125 if (strlen(pkt_dev->src_min) == 0) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002126
2127 struct in_device *in_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128
2129 rcu_read_lock();
Herbert Xue5ed6392005-10-03 14:35:55 -07002130 in_dev = __in_dev_get_rcu(pkt_dev->odev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131 if (in_dev) {
2132 if (in_dev->ifa_list) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002133 pkt_dev->saddr_min =
2134 in_dev->ifa_list->ifa_address;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135 pkt_dev->saddr_max = pkt_dev->saddr_min;
2136 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002137 }
2138 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002139 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2141 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2142 }
2143
2144 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2145 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2146 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002147 /* Initialize current values. */
Amerigo Wang68bf9f02012-10-09 17:48:17 +00002148 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2149 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2150 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2151
Luiz Capitulino222f1802006-03-20 22:16:13 -08002152 pkt_dev->cur_dst_mac_offset = 0;
2153 pkt_dev->cur_src_mac_offset = 0;
2154 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2155 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2156 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2157 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002158 pkt_dev->nflows = 0;
2159}
2160
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002162static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2163{
Stephen Hemmingeref879792009-09-22 19:41:43 +00002164 ktime_t start_time, end_time;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002165 s64 remaining;
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002166 struct hrtimer_sleeper t;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002167
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002168 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2169 hrtimer_set_expires(&t.timer, spin_until);
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002170
Daniel Turull43d28b62010-06-09 22:49:57 +00002171 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002172 if (remaining <= 0) {
2173 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002174 return;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002175 }
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002176
Daniel Borkmann398f3822012-10-28 08:27:19 +00002177 start_time = ktime_get();
Eric Dumazet33136d12011-10-20 17:00:21 -04002178 if (remaining < 100000) {
2179 /* for small delays (<100us), just loop until limit is reached */
2180 do {
Daniel Borkmann398f3822012-10-28 08:27:19 +00002181 end_time = ktime_get();
2182 } while (ktime_compare(end_time, spin_until) < 0);
Eric Dumazet33136d12011-10-20 17:00:21 -04002183 } else {
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002184 /* see do_nanosleep */
2185 hrtimer_init_sleeper(&t, current);
2186 do {
2187 set_current_state(TASK_INTERRUPTIBLE);
2188 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2189 if (!hrtimer_active(&t.timer))
2190 t.task = NULL;
2191
2192 if (likely(t.task))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002193 schedule();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002195 hrtimer_cancel(&t.timer);
2196 } while (t.task && pkt_dev->running && !signal_pending(current));
2197 __set_current_state(TASK_RUNNING);
Daniel Borkmann398f3822012-10-28 08:27:19 +00002198 end_time = ktime_get();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199 }
Stephen Hemmingeref879792009-09-22 19:41:43 +00002200
2201 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
Daniel Turull07a0f0f2010-06-10 23:08:11 -07002202 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203}
2204
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002205static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2206{
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002207 pkt_dev->pkt_overhead = 0;
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002208 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2209 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2210 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2211}
2212
Stephen Hemminger648fda72009-08-27 13:55:07 +00002213static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002214{
Stephen Hemminger648fda72009-08-27 13:55:07 +00002215 return !!(pkt_dev->flows[flow].flags & F_INIT);
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002216}
2217
2218static inline int f_pick(struct pktgen_dev *pkt_dev)
2219{
2220 int flow = pkt_dev->curfl;
2221
2222 if (pkt_dev->flags & F_FLOW_SEQ) {
2223 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2224 /* reset time */
2225 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002226 pkt_dev->flows[flow].flags = 0;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002227 pkt_dev->curfl += 1;
2228 if (pkt_dev->curfl >= pkt_dev->cflows)
2229 pkt_dev->curfl = 0; /*reset */
2230 }
2231 } else {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002232 flow = prandom_u32() % pkt_dev->cflows;
Robert Olsson1211a642008-08-05 18:44:26 -07002233 pkt_dev->curfl = flow;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002234
Robert Olsson1211a642008-08-05 18:44:26 -07002235 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002236 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002237 pkt_dev->flows[flow].flags = 0;
2238 }
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002239 }
2240
2241 return pkt_dev->curfl;
2242}
2243
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002244
2245#ifdef CONFIG_XFRM
2246/* If there was already an IPSEC SA, we keep it as is, else
2247 * we go look for it ...
2248*/
Jamal Hadi Salimbd557752010-02-22 16:20:22 -08002249#define DUMMY_MARK 0
Adrian Bunkfea1ab02007-07-30 18:04:09 -07002250static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002251{
2252 struct xfrm_state *x = pkt_dev->flows[flow].x;
Cong Wang4e58a022013-01-28 19:55:53 +00002253 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002254 if (!x) {
Fan Duc4549972014-01-03 11:18:32 +08002255
2256 if (pkt_dev->spi) {
2257 /* We need as quick as possible to find the right SA
2258 * Searching with minimum criteria to archieve this.
2259 */
2260 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2261 } else {
2262 /* slow path: we dont already have xfrm_state */
2263 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2264 (xfrm_address_t *)&pkt_dev->cur_daddr,
2265 (xfrm_address_t *)&pkt_dev->cur_saddr,
2266 AF_INET,
2267 pkt_dev->ipsmode,
2268 pkt_dev->ipsproto, 0);
2269 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002270 if (x) {
2271 pkt_dev->flows[flow].x = x;
2272 set_pkt_overhead(pkt_dev);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002273 pkt_dev->pkt_overhead += x->props.header_len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002274 }
2275
2276 }
2277}
2278#endif
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002279static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2280{
Robert Olssone6fce5b2008-08-07 02:23:01 -07002281
2282 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2283 pkt_dev->cur_queue_map = smp_processor_id();
2284
Eric Dumazet896a7cf2009-10-02 20:24:59 +00002285 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002286 __u16 t;
2287 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002288 t = prandom_u32() %
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002289 (pkt_dev->queue_map_max -
2290 pkt_dev->queue_map_min + 1)
2291 + pkt_dev->queue_map_min;
2292 } else {
2293 t = pkt_dev->cur_queue_map + 1;
2294 if (t > pkt_dev->queue_map_max)
2295 t = pkt_dev->queue_map_min;
2296 }
2297 pkt_dev->cur_queue_map = t;
2298 }
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002299 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 -07002300}
2301
Linus Torvalds1da177e2005-04-16 15:20:36 -07002302/* Increment/randomize headers according to flags and current values
2303 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2304 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002305static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2306{
2307 __u32 imn;
2308 __u32 imx;
2309 int flow = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002310
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002311 if (pkt_dev->cflows)
2312 flow = f_pick(pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002313
2314 /* Deal with source MAC */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002315 if (pkt_dev->src_mac_count > 1) {
2316 __u32 mc;
2317 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002318
Luiz Capitulino222f1802006-03-20 22:16:13 -08002319 if (pkt_dev->flags & F_MACSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002320 mc = prandom_u32() % pkt_dev->src_mac_count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002321 else {
2322 mc = pkt_dev->cur_src_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002323 if (pkt_dev->cur_src_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002324 pkt_dev->src_mac_count)
2325 pkt_dev->cur_src_mac_offset = 0;
2326 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327
Luiz Capitulino222f1802006-03-20 22:16:13 -08002328 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2329 pkt_dev->hh[11] = tmp;
2330 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2331 pkt_dev->hh[10] = tmp;
2332 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2333 pkt_dev->hh[9] = tmp;
2334 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2335 pkt_dev->hh[8] = tmp;
2336 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2337 pkt_dev->hh[7] = tmp;
2338 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002339
Luiz Capitulino222f1802006-03-20 22:16:13 -08002340 /* Deal with Destination MAC */
2341 if (pkt_dev->dst_mac_count > 1) {
2342 __u32 mc;
2343 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002344
Luiz Capitulino222f1802006-03-20 22:16:13 -08002345 if (pkt_dev->flags & F_MACDST_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002346 mc = prandom_u32() % pkt_dev->dst_mac_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347
Luiz Capitulino222f1802006-03-20 22:16:13 -08002348 else {
2349 mc = pkt_dev->cur_dst_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002350 if (pkt_dev->cur_dst_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002351 pkt_dev->dst_mac_count) {
2352 pkt_dev->cur_dst_mac_offset = 0;
2353 }
2354 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355
Luiz Capitulino222f1802006-03-20 22:16:13 -08002356 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2357 pkt_dev->hh[5] = tmp;
2358 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2359 pkt_dev->hh[4] = tmp;
2360 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2361 pkt_dev->hh[3] = tmp;
2362 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2363 pkt_dev->hh[2] = tmp;
2364 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2365 pkt_dev->hh[1] = tmp;
2366 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002368 if (pkt_dev->flags & F_MPLS_RND) {
Eric Dumazet95c96172012-04-15 05:58:06 +00002369 unsigned int i;
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002370 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002371 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2372 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002373 ((__force __be32)prandom_u32() &
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002374 htonl(0x000fffff));
2375 }
2376
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002377 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002378 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002379 }
2380
2381 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002382 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002383 }
2384
Luiz Capitulino222f1802006-03-20 22:16:13 -08002385 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2386 if (pkt_dev->flags & F_UDPSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002387 pkt_dev->cur_udp_src = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002388 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2389 + pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002390
Luiz Capitulino222f1802006-03-20 22:16:13 -08002391 else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002392 pkt_dev->cur_udp_src++;
2393 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2394 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002395 }
2396 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002397
Luiz Capitulino222f1802006-03-20 22:16:13 -08002398 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2399 if (pkt_dev->flags & F_UDPDST_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002400 pkt_dev->cur_udp_dst = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002401 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2402 + pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002403 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002404 pkt_dev->cur_udp_dst++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002405 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002406 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002407 }
2408 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002409
2410 if (!(pkt_dev->flags & F_IPV6)) {
2411
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002412 imn = ntohl(pkt_dev->saddr_min);
2413 imx = ntohl(pkt_dev->saddr_max);
2414 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415 __u32 t;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002416 if (pkt_dev->flags & F_IPSRC_RND)
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002417 t = prandom_u32() % (imx - imn) + imn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418 else {
2419 t = ntohl(pkt_dev->cur_saddr);
2420 t++;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002421 if (t > imx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002422 t = imn;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002423
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424 }
2425 pkt_dev->cur_saddr = htonl(t);
2426 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002427
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002428 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002429 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2430 } else {
Al Viro252e3342006-11-14 20:48:11 -08002431 imn = ntohl(pkt_dev->daddr_min);
2432 imx = ntohl(pkt_dev->daddr_max);
2433 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002434 __u32 t;
Al Viro252e3342006-11-14 20:48:11 -08002435 __be32 s;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436 if (pkt_dev->flags & F_IPDST_RND) {
2437
Akinobu Mita70e3ba72013-04-29 16:21:41 -07002438 do {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002439 t = prandom_u32() %
2440 (imx - imn) + imn;
Al Viro252e3342006-11-14 20:48:11 -08002441 s = htonl(t);
Akinobu Mita70e3ba72013-04-29 16:21:41 -07002442 } while (ipv4_is_loopback(s) ||
2443 ipv4_is_multicast(s) ||
2444 ipv4_is_lbcast(s) ||
2445 ipv4_is_zeronet(s) ||
2446 ipv4_is_local_multicast(s));
Al Viro252e3342006-11-14 20:48:11 -08002447 pkt_dev->cur_daddr = s;
2448 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449 t = ntohl(pkt_dev->cur_daddr);
2450 t++;
2451 if (t > imx) {
2452 t = imn;
2453 }
2454 pkt_dev->cur_daddr = htonl(t);
2455 }
2456 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002457 if (pkt_dev->cflows) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002458 pkt_dev->flows[flow].flags |= F_INIT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002459 pkt_dev->flows[flow].cur_daddr =
2460 pkt_dev->cur_daddr;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002461#ifdef CONFIG_XFRM
2462 if (pkt_dev->flags & F_IPSEC_ON)
2463 get_ipsec_sa(pkt_dev, flow);
2464#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002465 pkt_dev->nflows++;
2466 }
2467 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002468 } else { /* IPV6 * */
2469
Joe Perches06e30412012-10-18 17:55:31 +00002470 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002471 int i;
2472
2473 /* Only random destinations yet */
2474
Luiz Capitulino222f1802006-03-20 22:16:13 -08002475 for (i = 0; i < 4; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002476 pkt_dev->cur_in6_daddr.s6_addr32[i] =
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002477 (((__force __be32)prandom_u32() |
Luiz Capitulino222f1802006-03-20 22:16:13 -08002478 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2479 pkt_dev->max_in6_daddr.s6_addr32[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002481 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002482 }
2483
Luiz Capitulino222f1802006-03-20 22:16:13 -08002484 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2485 __u32 t;
2486 if (pkt_dev->flags & F_TXSIZE_RND) {
Akinobu Mita33d7c5e2013-04-29 16:21:40 -07002487 t = prandom_u32() %
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002488 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2489 + pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002490 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002491 t = pkt_dev->cur_pkt_size + 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002492 if (t > pkt_dev->max_pkt_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002493 t = pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002494 }
2495 pkt_dev->cur_pkt_size = t;
2496 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002497
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002498 set_cur_queue_map(pkt_dev);
Robert Olsson45b270f2007-08-28 15:45:55 -07002499
Linus Torvalds1da177e2005-04-16 15:20:36 -07002500 pkt_dev->flows[flow].count++;
2501}
2502
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002503
2504#ifdef CONFIG_XFRM
Fengguang Wu5537a052014-01-06 11:00:07 +01002505static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
Fan Ducf93d472014-01-03 11:18:31 +08002506
2507 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2508};
2509
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002510static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2511{
2512 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2513 int err = 0;
Fan Du6de9ace2014-01-03 11:18:28 +08002514 struct net *net = dev_net(pkt_dev->odev);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002515
2516 if (!x)
2517 return 0;
2518 /* XXX: we dont support tunnel mode for now until
2519 * we resolve the dst issue */
Fan Ducf93d472014-01-03 11:18:31 +08002520 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002521 return 0;
2522
Fan Ducf93d472014-01-03 11:18:31 +08002523 /* But when user specify an valid SPI, transformation
2524 * supports both transport/tunnel mode + ESP/AH type.
2525 */
2526 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2527 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2528
2529 rcu_read_lock_bh();
Herbert Xu13996372007-10-17 21:35:51 -07002530 err = x->outer_mode->output(x, skb);
Fan Ducf93d472014-01-03 11:18:31 +08002531 rcu_read_unlock_bh();
Fan Du6de9ace2014-01-03 11:18:28 +08002532 if (err) {
2533 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002534 goto error;
Fan Du6de9ace2014-01-03 11:18:28 +08002535 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002536 err = x->type->output(x, skb);
Fan Du6de9ace2014-01-03 11:18:28 +08002537 if (err) {
2538 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002539 goto error;
Fan Du6de9ace2014-01-03 11:18:28 +08002540 }
Fan Du0af0a412014-01-03 11:18:27 +08002541 spin_lock_bh(&x->lock);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002542 x->curlft.bytes += skb->len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002543 x->curlft.packets++;
Fan Du0af0a412014-01-03 11:18:27 +08002544 spin_unlock_bh(&x->lock);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002545error:
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002546 return err;
2547}
2548
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002549static void free_SAs(struct pktgen_dev *pkt_dev)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002550{
2551 if (pkt_dev->cflows) {
2552 /* let go of the SAs if we have them */
Paul Gortmakerd6182222010-10-18 12:14:44 +00002553 int i;
2554 for (i = 0; i < pkt_dev->cflows; i++) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002555 struct xfrm_state *x = pkt_dev->flows[i].x;
2556 if (x) {
2557 xfrm_state_put(x);
2558 pkt_dev->flows[i].x = NULL;
2559 }
2560 }
2561 }
2562}
2563
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002564static int process_ipsec(struct pktgen_dev *pkt_dev,
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002565 struct sk_buff *skb, __be16 protocol)
2566{
2567 if (pkt_dev->flags & F_IPSEC_ON) {
2568 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2569 int nhead = 0;
2570 if (x) {
2571 int ret;
2572 __u8 *eth;
fan.du38682042013-12-01 16:28:48 +08002573 struct iphdr *iph;
2574
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002575 nhead = x->props.header_len - skb_headroom(skb);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002576 if (nhead > 0) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002577 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2578 if (ret < 0) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002579 pr_err("Error expanding ipsec packet %d\n",
2580 ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002581 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002582 }
2583 }
2584
2585 /* ipsec is not expecting ll header */
2586 skb_pull(skb, ETH_HLEN);
2587 ret = pktgen_output_ipsec(skb, pkt_dev);
2588 if (ret) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002589 pr_err("Error creating ipsec packet %d\n", ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002590 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002591 }
2592 /* restore ll */
2593 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2594 memcpy(eth, pkt_dev->hh, 12);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002595 *(u16 *) &eth[12] = protocol;
fan.du38682042013-12-01 16:28:48 +08002596
2597 /* Update IPv4 header len as well as checksum value */
2598 iph = ip_hdr(skb);
2599 iph->tot_len = htons(skb->len - ETH_HLEN);
2600 ip_send_check(iph);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002601 }
2602 }
2603 return 1;
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002604err:
2605 kfree_skb(skb);
2606 return 0;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002607}
2608#endif
2609
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002610static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2611{
Eric Dumazet95c96172012-04-15 05:58:06 +00002612 unsigned int i;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002613 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002614 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002615
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002616 mpls--;
2617 *mpls |= MPLS_STACK_BOTTOM;
2618}
2619
Al Viro0f37c602006-11-03 03:49:56 -08002620static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2621 unsigned int prio)
2622{
2623 return htons(id | (cfi << 12) | (prio << 13));
2624}
2625
Eric Dumazet26ad7872011-01-25 13:26:05 -08002626static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2627 int datalen)
2628{
2629 struct timeval timestamp;
2630 struct pktgen_hdr *pgh;
2631
2632 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2633 datalen -= sizeof(*pgh);
2634
2635 if (pkt_dev->nfrags <= 0) {
Daniel Turull05aebe22011-03-14 13:47:40 -07002636 memset(skb_put(skb, datalen), 0, datalen);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002637 } else {
2638 int frags = pkt_dev->nfrags;
2639 int i, len;
amit salecha7d36a992011-04-22 16:22:20 +00002640 int frag_len;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002641
2642
2643 if (frags > MAX_SKB_FRAGS)
2644 frags = MAX_SKB_FRAGS;
2645 len = datalen - frags * PAGE_SIZE;
2646 if (len > 0) {
2647 memset(skb_put(skb, len), 0, len);
2648 datalen = frags * PAGE_SIZE;
2649 }
2650
2651 i = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002652 frag_len = (datalen/frags) < PAGE_SIZE ?
2653 (datalen/frags) : PAGE_SIZE;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002654 while (datalen > 0) {
2655 if (unlikely(!pkt_dev->page)) {
2656 int node = numa_node_id();
2657
2658 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2659 node = pkt_dev->node;
2660 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2661 if (!pkt_dev->page)
2662 break;
2663 }
Ian Campbella0bec1c2011-10-18 22:55:11 +00002664 get_page(pkt_dev->page);
Ian Campbellea2ab692011-08-22 23:44:58 +00002665 skb_frag_set_page(skb, i, pkt_dev->page);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002666 skb_shinfo(skb)->frags[i].page_offset = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002667 /*last fragment, fill rest of data*/
2668 if (i == (frags - 1))
Eric Dumazet9e903e02011-10-18 21:00:24 +00002669 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2670 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
amit salecha7d36a992011-04-22 16:22:20 +00002671 else
Eric Dumazet9e903e02011-10-18 21:00:24 +00002672 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2673 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2674 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2675 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002676 i++;
2677 skb_shinfo(skb)->nr_frags = i;
2678 }
Eric Dumazet26ad7872011-01-25 13:26:05 -08002679 }
2680
2681 /* Stamp the time, and sequence number,
2682 * convert them to network byte order
2683 */
2684 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2685 pgh->seq_num = htonl(pkt_dev->seq_num);
2686
2687 do_gettimeofday(&timestamp);
2688 pgh->tv_sec = htonl(timestamp.tv_sec);
2689 pgh->tv_usec = htonl(timestamp.tv_usec);
2690}
2691
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002692static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2693 struct pktgen_dev *pkt_dev,
2694 unsigned int extralen)
2695{
2696 struct sk_buff *skb = NULL;
2697 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2698 pkt_dev->pkt_overhead;
2699
2700 if (pkt_dev->flags & F_NODE) {
2701 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2702
2703 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2704 if (likely(skb)) {
2705 skb_reserve(skb, NET_SKB_PAD);
2706 skb->dev = dev;
2707 }
2708 } else {
2709 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2710 }
2711
2712 return skb;
2713}
2714
Luiz Capitulino222f1802006-03-20 22:16:13 -08002715static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2716 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002717{
2718 struct sk_buff *skb = NULL;
2719 __u8 *eth;
2720 struct udphdr *udph;
2721 int datalen, iplen;
2722 struct iphdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002723 __be16 protocol = htons(ETH_P_IP);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002724 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002725 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2726 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2727 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2728 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002729 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002730
2731 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002732 protocol = htons(ETH_P_MPLS_UC);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002733
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002734 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002735 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002736
Robert Olsson64053be2005-06-26 15:27:10 -07002737 /* Update any of the values, used when we're incrementing various
2738 * fields.
2739 */
2740 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002741 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002742
David S. Miller7ac54592006-01-18 14:19:10 -08002743 datalen = (odev->hard_header_len + 16) & ~0xf;
Robert Olssone99b99b2010-03-18 22:44:30 +00002744
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002745 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002746 if (!skb) {
2747 sprintf(pkt_dev->result, "No memory");
2748 return NULL;
2749 }
2750
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002751 prefetchw(skb->data);
David S. Miller7ac54592006-01-18 14:19:10 -08002752 skb_reserve(skb, datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002753
2754 /* Reserve for ethernet and IP header */
2755 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002756 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2757 if (pkt_dev->nr_labels)
2758 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002759
2760 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002761 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002762 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002763 *svlan_tci = build_tci(pkt_dev->svlan_id,
2764 pkt_dev->svlan_cfi,
2765 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002766 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002767 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002768 }
2769 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002770 *vlan_tci = build_tci(pkt_dev->vlan_id,
2771 pkt_dev->vlan_cfi,
2772 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002773 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002774 *vlan_encapsulated_proto = htons(ETH_P_IP);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002775 }
2776
Thomas Graf525cebe2013-06-03 11:49:23 +00002777 skb_set_mac_header(skb, 0);
2778 skb_set_network_header(skb, skb->len);
2779 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2780
2781 skb_set_transport_header(skb, skb->len);
2782 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002783 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002784 skb->priority = pkt_dev->skb_priority;
2785
Linus Torvalds1da177e2005-04-16 15:20:36 -07002786 memcpy(eth, pkt_dev->hh, 12);
Al Viro252e3342006-11-14 20:48:11 -08002787 *(__be16 *) & eth[12] = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002788
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002789 /* Eth + IPh + UDPh + mpls */
2790 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002791 pkt_dev->pkt_overhead;
Nishank Trivedi6af773e2012-09-12 13:32:49 +00002792 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002793 datalen = sizeof(struct pktgen_hdr);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002794
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795 udph->source = htons(pkt_dev->cur_udp_src);
2796 udph->dest = htons(pkt_dev->cur_udp_dst);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002797 udph->len = htons(datalen + 8); /* DATA + udphdr */
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002798 udph->check = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002799
2800 iph->ihl = 5;
2801 iph->version = 4;
2802 iph->ttl = 32;
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002803 iph->tos = pkt_dev->tos;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002804 iph->protocol = IPPROTO_UDP; /* UDP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805 iph->saddr = pkt_dev->cur_saddr;
2806 iph->daddr = pkt_dev->cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -07002807 iph->id = htons(pkt_dev->ip_id);
2808 pkt_dev->ip_id++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002809 iph->frag_off = 0;
2810 iplen = 20 + 8 + datalen;
2811 iph->tot_len = htons(iplen);
Thomas Graf03c633e2013-07-25 14:08:04 +02002812 ip_send_check(iph);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002813 skb->protocol = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002814 skb->dev = odev;
2815 skb->pkt_type = PACKET_HOST;
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002816
2817 if (!(pkt_dev->flags & F_UDPCSUM)) {
2818 skb->ip_summed = CHECKSUM_NONE;
2819 } else if (odev->features & NETIF_F_V4_CSUM) {
2820 skb->ip_summed = CHECKSUM_PARTIAL;
2821 skb->csum = 0;
2822 udp4_hwcsum(skb, udph->source, udph->dest);
2823 } else {
2824 __wsum csum = udp_csum(skb);
2825
2826 /* add protocol-dependent pseudo-header */
2827 udph->check = csum_tcpudp_magic(udph->source, udph->dest,
2828 datalen + 8, IPPROTO_UDP, csum);
2829
2830 if (udph->check == 0)
2831 udph->check = CSUM_MANGLED_0;
2832 }
2833
Eric Dumazet26ad7872011-01-25 13:26:05 -08002834 pktgen_finalize_skb(pkt_dev, skb, datalen);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002835
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002836#ifdef CONFIG_XFRM
2837 if (!process_ipsec(pkt_dev, skb, protocol))
2838 return NULL;
2839#endif
2840
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 return skb;
2842}
2843
Luiz Capitulino222f1802006-03-20 22:16:13 -08002844static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2845 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846{
2847 struct sk_buff *skb = NULL;
2848 __u8 *eth;
2849 struct udphdr *udph;
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002850 int datalen, udplen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002851 struct ipv6hdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002852 __be16 protocol = htons(ETH_P_IPV6);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002853 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002854 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2855 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2856 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2857 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002858 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002859
2860 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002861 protocol = htons(ETH_P_MPLS_UC);
Robert Olsson64053be2005-06-26 15:27:10 -07002862
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002863 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002864 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002865
Robert Olsson64053be2005-06-26 15:27:10 -07002866 /* Update any of the values, used when we're incrementing various
2867 * fields.
2868 */
2869 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002870 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002871
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002872 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002873 if (!skb) {
2874 sprintf(pkt_dev->result, "No memory");
2875 return NULL;
2876 }
2877
Daniel Borkmann7a6e2882013-06-08 14:18:16 +02002878 prefetchw(skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002879 skb_reserve(skb, 16);
2880
2881 /* Reserve for ethernet and IP header */
2882 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002883 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2884 if (pkt_dev->nr_labels)
2885 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002886
2887 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002888 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002889 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002890 *svlan_tci = build_tci(pkt_dev->svlan_id,
2891 pkt_dev->svlan_cfi,
2892 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002893 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002894 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002895 }
2896 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002897 *vlan_tci = build_tci(pkt_dev->vlan_id,
2898 pkt_dev->vlan_cfi,
2899 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002900 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002901 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002902 }
2903
Thomas Graf525cebe2013-06-03 11:49:23 +00002904 skb_set_mac_header(skb, 0);
2905 skb_set_network_header(skb, skb->len);
2906 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2907
2908 skb_set_transport_header(skb, skb->len);
2909 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002910 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002911 skb->priority = pkt_dev->skb_priority;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002912
Linus Torvalds1da177e2005-04-16 15:20:36 -07002913 memcpy(eth, pkt_dev->hh, 12);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002914 *(__be16 *) &eth[12] = protocol;
Robert Olsson64053be2005-06-26 15:27:10 -07002915
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002916 /* Eth + IPh + UDPh + mpls */
2917 datalen = pkt_dev->cur_pkt_size - 14 -
2918 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002919 pkt_dev->pkt_overhead;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002920
Amerigo Wang5aa8b572012-10-09 17:48:16 +00002921 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002922 datalen = sizeof(struct pktgen_hdr);
Joe Perchese87cc472012-05-13 21:56:26 +00002923 net_info_ratelimited("increased datalen to %d\n", datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924 }
2925
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002926 udplen = datalen + sizeof(struct udphdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002927 udph->source = htons(pkt_dev->cur_udp_src);
2928 udph->dest = htons(pkt_dev->cur_udp_dst);
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002929 udph->len = htons(udplen);
2930 udph->check = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002931
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002932 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002933
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002934 if (pkt_dev->traffic_class) {
2935 /* Version + traffic class + flow (0) */
Al Viro252e3342006-11-14 20:48:11 -08002936 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002937 }
2938
Linus Torvalds1da177e2005-04-16 15:20:36 -07002939 iph->hop_limit = 32;
2940
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002941 iph->payload_len = htons(udplen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002942 iph->nexthdr = IPPROTO_UDP;
2943
Alexey Dobriyan4e3fd7a2011-11-21 03:39:03 +00002944 iph->daddr = pkt_dev->cur_in6_daddr;
2945 iph->saddr = pkt_dev->cur_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002946
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002947 skb->protocol = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002948 skb->dev = odev;
2949 skb->pkt_type = PACKET_HOST;
2950
Thomas Grafc26bf4a2013-07-25 18:12:18 +02002951 if (!(pkt_dev->flags & F_UDPCSUM)) {
2952 skb->ip_summed = CHECKSUM_NONE;
2953 } else if (odev->features & NETIF_F_V6_CSUM) {
2954 skb->ip_summed = CHECKSUM_PARTIAL;
2955 skb->csum_start = skb_transport_header(skb) - skb->head;
2956 skb->csum_offset = offsetof(struct udphdr, check);
2957 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2958 } else {
2959 __wsum csum = udp_csum(skb);
2960
2961 /* add protocol-dependent pseudo-header */
2962 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2963
2964 if (udph->check == 0)
2965 udph->check = CSUM_MANGLED_0;
2966 }
2967
Eric Dumazet26ad7872011-01-25 13:26:05 -08002968 pktgen_finalize_skb(pkt_dev, skb, datalen);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002969
Linus Torvalds1da177e2005-04-16 15:20:36 -07002970 return skb;
2971}
2972
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002973static struct sk_buff *fill_packet(struct net_device *odev,
2974 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002975{
Luiz Capitulino222f1802006-03-20 22:16:13 -08002976 if (pkt_dev->flags & F_IPV6)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002977 return fill_packet_ipv6(odev, pkt_dev);
2978 else
2979 return fill_packet_ipv4(odev, pkt_dev);
2980}
2981
Luiz Capitulino222f1802006-03-20 22:16:13 -08002982static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002983{
Luiz Capitulino222f1802006-03-20 22:16:13 -08002984 pkt_dev->seq_num = 1;
2985 pkt_dev->idle_acc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002986 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002987 pkt_dev->tx_bytes = 0;
2988 pkt_dev->errors = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002989}
2990
2991/* Set up structure for sending pkts, clear counters */
2992
2993static void pktgen_run(struct pktgen_thread *t)
2994{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08002995 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002996 int started = 0;
2997
Joe Perchesf9467ea2010-06-21 12:29:14 +00002998 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002999
3000 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003001 list_for_each_entry(pkt_dev, &t->if_list, list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003002
3003 /*
3004 * setup odev and create initial packet.
3005 */
3006 pktgen_setup_inject(pkt_dev);
3007
Luiz Capitulino222f1802006-03-20 22:16:13 -08003008 if (pkt_dev->odev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003009 pktgen_clear_counters(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003010 pkt_dev->running = 1; /* Cranke yeself! */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003011 pkt_dev->skb = NULL;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003012 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003013
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07003014 set_pkt_overhead(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003015
Linus Torvalds1da177e2005-04-16 15:20:36 -07003016 strcpy(pkt_dev->result, "Starting");
3017 started++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003018 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003019 strcpy(pkt_dev->result, "Error starting");
3020 }
3021 if_unlock(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003022 if (started)
3023 t->control &= ~(T_STOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003024}
3025
Cong Wang4e58a022013-01-28 19:55:53 +00003026static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003028 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003029
Joe Perchesf9467ea2010-06-21 12:29:14 +00003030 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003031
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003032 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003033
Cong Wang4e58a022013-01-28 19:55:53 +00003034 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003035 t->control |= T_STOP;
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003036
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003037 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003038}
3039
Stephen Hemminger648fda72009-08-27 13:55:07 +00003040static int thread_is_running(const struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003041{
Stephen Hemminger648fda72009-08-27 13:55:07 +00003042 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003043
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003044 list_for_each_entry(pkt_dev, &t->if_list, list)
Stephen Hemminger648fda72009-08-27 13:55:07 +00003045 if (pkt_dev->running)
3046 return 1;
3047 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003048}
3049
Luiz Capitulino222f1802006-03-20 22:16:13 -08003050static int pktgen_wait_thread_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003051{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003052 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003053
Luiz Capitulino222f1802006-03-20 22:16:13 -08003054 while (thread_is_running(t)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055
Luiz Capitulino222f1802006-03-20 22:16:13 -08003056 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003057
Luiz Capitulino222f1802006-03-20 22:16:13 -08003058 msleep_interruptible(100);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059
Luiz Capitulino222f1802006-03-20 22:16:13 -08003060 if (signal_pending(current))
3061 goto signal;
3062 if_lock(t);
3063 }
3064 if_unlock(t);
3065 return 1;
3066signal:
3067 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003068}
3069
Cong Wang4e58a022013-01-28 19:55:53 +00003070static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003071{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003072 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003073 int sig = 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003074
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003075 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003076
Cong Wang4e58a022013-01-28 19:55:53 +00003077 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003078 sig = pktgen_wait_thread_run(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003079 if (sig == 0)
3080 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003081 }
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003082
3083 if (sig == 0)
Cong Wang4e58a022013-01-28 19:55:53 +00003084 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003085 t->control |= (T_STOP);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003086
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003087 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003088 return sig;
3089}
3090
Cong Wang4e58a022013-01-28 19:55:53 +00003091static void pktgen_run_all_threads(struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003092{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003093 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003094
Joe Perchesf9467ea2010-06-21 12:29:14 +00003095 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003096
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003097 mutex_lock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003098
Cong Wang4e58a022013-01-28 19:55:53 +00003099 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003100 t->control |= (T_RUN);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003101
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003102 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003104 /* Propagate thread->control */
3105 schedule_timeout_interruptible(msecs_to_jiffies(125));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003106
Cong Wang4e58a022013-01-28 19:55:53 +00003107 pktgen_wait_all_threads_run(pn);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108}
3109
Cong Wang4e58a022013-01-28 19:55:53 +00003110static void pktgen_reset_all_threads(struct pktgen_net *pn)
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003111{
3112 struct pktgen_thread *t;
3113
Joe Perchesf9467ea2010-06-21 12:29:14 +00003114 func_enter();
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003115
3116 mutex_lock(&pktgen_thread_lock);
3117
Cong Wang4e58a022013-01-28 19:55:53 +00003118 list_for_each_entry(t, &pn->pktgen_threads, th_list)
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003119 t->control |= (T_REMDEVALL);
3120
3121 mutex_unlock(&pktgen_thread_lock);
3122
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003123 /* Propagate thread->control */
3124 schedule_timeout_interruptible(msecs_to_jiffies(125));
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003125
Cong Wang4e58a022013-01-28 19:55:53 +00003126 pktgen_wait_all_threads_run(pn);
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003127}
3128
Linus Torvalds1da177e2005-04-16 15:20:36 -07003129static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3130{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003131 __u64 bps, mbps, pps;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003132 char *p = pkt_dev->result;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003133 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3134 pkt_dev->started_at);
3135 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003136
Daniel Turull03a14ab2011-03-09 14:11:00 -08003137 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003138 (unsigned long long)ktime_to_us(elapsed),
3139 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3140 (unsigned long long)ktime_to_us(idle),
Luiz Capitulino222f1802006-03-20 22:16:13 -08003141 (unsigned long long)pkt_dev->sofar,
3142 pkt_dev->cur_pkt_size, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003143
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003144 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3145 ktime_to_ns(elapsed));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003146
Luiz Capitulino222f1802006-03-20 22:16:13 -08003147 bps = pps * 8 * pkt_dev->cur_pkt_size;
3148
3149 mbps = bps;
3150 do_div(mbps, 1000000);
3151 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3152 (unsigned long long)pps,
3153 (unsigned long long)mbps,
3154 (unsigned long long)bps,
3155 (unsigned long long)pkt_dev->errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003156}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003157
3158/* Set stopped-at timer, remove from running list, do counters & statistics */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003159static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003160{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003161 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003162
Luiz Capitulino222f1802006-03-20 22:16:13 -08003163 if (!pkt_dev->running) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003164 pr_warning("interface: %s is already stopped\n",
3165 pkt_dev->odevname);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003166 return -EINVAL;
3167 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003168
Stephen Hemminger3bda06a2009-08-27 13:55:10 +00003169 kfree_skb(pkt_dev->skb);
3170 pkt_dev->skb = NULL;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003171 pkt_dev->stopped_at = ktime_get();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003172 pkt_dev->running = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003173
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003174 show_results(pkt_dev, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003175
Luiz Capitulino222f1802006-03-20 22:16:13 -08003176 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003177}
3178
Luiz Capitulino222f1802006-03-20 22:16:13 -08003179static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003180{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003181 struct pktgen_dev *pkt_dev, *best = NULL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003182
Linus Torvalds1da177e2005-04-16 15:20:36 -07003183 if_lock(t);
3184
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003185 list_for_each_entry(pkt_dev, &t->if_list, list) {
3186 if (!pkt_dev->running)
Luiz Capitulino222f1802006-03-20 22:16:13 -08003187 continue;
3188 if (best == NULL)
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003189 best = pkt_dev;
Daniel Borkmann398f3822012-10-28 08:27:19 +00003190 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003191 best = pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003192 }
3193 if_unlock(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003194 return best;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003195}
3196
Luiz Capitulino222f1802006-03-20 22:16:13 -08003197static void pktgen_stop(struct pktgen_thread *t)
3198{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003199 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003200
Joe Perchesf9467ea2010-06-21 12:29:14 +00003201 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003202
Luiz Capitulino222f1802006-03-20 22:16:13 -08003203 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003204
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003205 list_for_each_entry(pkt_dev, &t->if_list, list) {
3206 pktgen_stop_device(pkt_dev);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003207 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003208
Luiz Capitulino222f1802006-03-20 22:16:13 -08003209 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003210}
3211
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003212/*
3213 * one of our devices needs to be removed - find it
3214 * and remove it
3215 */
3216static void pktgen_rem_one_if(struct pktgen_thread *t)
3217{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003218 struct list_head *q, *n;
3219 struct pktgen_dev *cur;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003220
Joe Perchesf9467ea2010-06-21 12:29:14 +00003221 func_enter();
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003222
3223 if_lock(t);
3224
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003225 list_for_each_safe(q, n, &t->if_list) {
3226 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003227
Luiz Capitulino222f1802006-03-20 22:16:13 -08003228 if (!cur->removal_mark)
3229 continue;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003230
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003231 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003232 cur->skb = NULL;
3233
3234 pktgen_remove_device(t, cur);
3235
3236 break;
3237 }
3238
3239 if_unlock(t);
3240}
3241
Luiz Capitulino222f1802006-03-20 22:16:13 -08003242static void pktgen_rem_all_ifs(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003243{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003244 struct list_head *q, *n;
3245 struct pktgen_dev *cur;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003246
Joe Perchesf9467ea2010-06-21 12:29:14 +00003247 func_enter();
3248
Luiz Capitulino222f1802006-03-20 22:16:13 -08003249 /* Remove all devices, free mem */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003250
Luiz Capitulino222f1802006-03-20 22:16:13 -08003251 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003252
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003253 list_for_each_safe(q, n, &t->if_list) {
3254 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003255
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003256 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003257 cur->skb = NULL;
3258
Linus Torvalds1da177e2005-04-16 15:20:36 -07003259 pktgen_remove_device(t, cur);
3260 }
3261
Luiz Capitulino222f1802006-03-20 22:16:13 -08003262 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003263}
3264
Luiz Capitulino222f1802006-03-20 22:16:13 -08003265static void pktgen_rem_thread(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003266{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003267 /* Remove from the thread list */
Cong Wang4e58a022013-01-28 19:55:53 +00003268 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003269}
3270
Stephen Hemmingeref879792009-09-22 19:41:43 +00003271static void pktgen_resched(struct pktgen_dev *pkt_dev)
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003272{
Daniel Borkmann398f3822012-10-28 08:27:19 +00003273 ktime_t idle_start = ktime_get();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003274 schedule();
Daniel Borkmann398f3822012-10-28 08:27:19 +00003275 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003276}
3277
Stephen Hemmingeref879792009-09-22 19:41:43 +00003278static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3279{
Daniel Borkmann398f3822012-10-28 08:27:19 +00003280 ktime_t idle_start = ktime_get();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003281
3282 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3283 if (signal_pending(current))
3284 break;
3285
3286 if (need_resched())
3287 pktgen_resched(pkt_dev);
3288 else
3289 cpu_relax();
3290 }
Daniel Borkmann398f3822012-10-28 08:27:19 +00003291 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
Stephen Hemmingeref879792009-09-22 19:41:43 +00003292}
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003293
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00003294static void pktgen_xmit(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003295{
Stephen Hemminger00829822008-11-20 20:14:53 -08003296 struct net_device *odev = pkt_dev->odev;
Stephen Hemminger6fef4c02009-08-31 19:50:41 +00003297 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
Stephen Hemminger00829822008-11-20 20:14:53 -08003298 = odev->netdev_ops->ndo_start_xmit;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003299 struct netdev_queue *txq;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003300 u16 queue_map;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003301 int ret;
3302
Stephen Hemmingeref879792009-09-22 19:41:43 +00003303 /* If device is offline, then don't send */
3304 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3305 pktgen_stop_device(pkt_dev);
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003306 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003307 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003308
Stephen Hemmingeref879792009-09-22 19:41:43 +00003309 /* This is max DELAY, this has special meaning of
3310 * "never transmit"
3311 */
3312 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
Daniel Borkmann398f3822012-10-28 08:27:19 +00003313 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003314 return;
3315 }
3316
3317 /* If no skb or clone count exhausted then get new one */
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003318 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3319 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3320 /* build a new pkt */
3321 kfree_skb(pkt_dev->skb);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003322
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003323 pkt_dev->skb = fill_packet(odev, pkt_dev);
3324 if (pkt_dev->skb == NULL) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003325 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003326 schedule();
3327 pkt_dev->clone_count--; /* back out increment, OOM */
3328 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003329 }
Eric Dumazetbaac8562009-11-05 21:04:32 -08003330 pkt_dev->last_pkt_size = pkt_dev->skb->len;
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003331 pkt_dev->allocated_skbs++;
3332 pkt_dev->clone_count = 0; /* reset counter */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003333 }
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003334
Stephen Hemmingeref879792009-09-22 19:41:43 +00003335 if (pkt_dev->delay && pkt_dev->last_ok)
3336 spin(pkt_dev, pkt_dev->next_tx);
3337
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003338 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3339 txq = netdev_get_tx_queue(odev, queue_map);
3340
Daniel Borkmann0f2eea42014-04-11 13:22:00 +02003341 local_bh_disable();
3342
3343 HARD_TX_LOCK(odev, txq, smp_processor_id());
Stephen Hemmingeref879792009-09-22 19:41:43 +00003344
Daniel Borkmann6f25cd42014-04-07 17:18:30 +02003345 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003346 ret = NETDEV_TX_BUSY;
Eric Dumazet0835acf2009-09-30 13:03:33 +00003347 pkt_dev->last_ok = 0;
3348 goto unlock;
3349 }
3350 atomic_inc(&(pkt_dev->skb->users));
3351 ret = (*xmit)(pkt_dev->skb, odev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003352
Stephen Hemmingeref879792009-09-22 19:41:43 +00003353 switch (ret) {
3354 case NETDEV_TX_OK:
3355 txq_trans_update(txq);
3356 pkt_dev->last_ok = 1;
3357 pkt_dev->sofar++;
3358 pkt_dev->seq_num++;
Eric Dumazetbaac8562009-11-05 21:04:32 -08003359 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003360 break;
John Fastabendf466dba2009-12-23 22:02:57 -08003361 case NET_XMIT_DROP:
3362 case NET_XMIT_CN:
3363 case NET_XMIT_POLICED:
3364 /* skb has been consumed */
3365 pkt_dev->errors++;
3366 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003367 default: /* Drivers are not supposed to return other values! */
Joe Perchese87cc472012-05-13 21:56:26 +00003368 net_info_ratelimited("%s xmit error: %d\n",
3369 pkt_dev->odevname, ret);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003370 pkt_dev->errors++;
3371 /* fallthru */
3372 case NETDEV_TX_LOCKED:
3373 case NETDEV_TX_BUSY:
3374 /* Retry it next time */
3375 atomic_dec(&(pkt_dev->skb->users));
3376 pkt_dev->last_ok = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003377 }
Eric Dumazet0835acf2009-09-30 13:03:33 +00003378unlock:
Daniel Borkmann0f2eea42014-04-11 13:22:00 +02003379 HARD_TX_UNLOCK(odev, txq);
3380
3381 local_bh_enable();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003382
Linus Torvalds1da177e2005-04-16 15:20:36 -07003383 /* If pkt_dev->count is zero, then run forever */
3384 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003385 pktgen_wait_for_skb(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003386
Linus Torvalds1da177e2005-04-16 15:20:36 -07003387 /* Done with this */
3388 pktgen_stop_device(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003389 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003390}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003391
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003392/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07003393 * Main loop of the thread goes here
3394 */
3395
David S. Milleree74baa2007-01-01 20:51:53 -08003396static int pktgen_thread_worker(void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003397{
3398 DEFINE_WAIT(wait);
David S. Milleree74baa2007-01-01 20:51:53 -08003399 struct pktgen_thread *t = arg;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003400 struct pktgen_dev *pkt_dev = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003401 int cpu = t->cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003402
David S. Milleree74baa2007-01-01 20:51:53 -08003403 BUG_ON(smp_processor_id() != cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003404
3405 init_waitqueue_head(&t->queue);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003406 complete(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003407
Joe Perchesf9467ea2010-06-21 12:29:14 +00003408 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003409
David S. Milleree74baa2007-01-01 20:51:53 -08003410 set_current_state(TASK_INTERRUPTIBLE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003411
Rafael J. Wysocki83144182007-07-17 04:03:35 -07003412 set_freezable();
3413
David S. Milleree74baa2007-01-01 20:51:53 -08003414 while (!kthread_should_stop()) {
3415 pkt_dev = next_to_run(t);
3416
Stephen Hemmingeref879792009-09-22 19:41:43 +00003417 if (unlikely(!pkt_dev && t->control == 0)) {
Cong Wang4e58a022013-01-28 19:55:53 +00003418 if (t->net->pktgen_exiting)
Eric Dumazet551eaff2010-11-21 10:26:44 -08003419 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003420 wait_event_interruptible_timeout(t->queue,
3421 t->control != 0,
3422 HZ/10);
Rafael J. Wysocki1b3f7202010-02-04 14:00:41 -08003423 try_to_freeze();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003424 continue;
David S. Milleree74baa2007-01-01 20:51:53 -08003425 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003426
Linus Torvalds1da177e2005-04-16 15:20:36 -07003427 __set_current_state(TASK_RUNNING);
3428
Stephen Hemmingeref879792009-09-22 19:41:43 +00003429 if (likely(pkt_dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003430 pktgen_xmit(pkt_dev);
3431
Stephen Hemmingeref879792009-09-22 19:41:43 +00003432 if (need_resched())
3433 pktgen_resched(pkt_dev);
3434 else
3435 cpu_relax();
3436 }
3437
Luiz Capitulino222f1802006-03-20 22:16:13 -08003438 if (t->control & T_STOP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003439 pktgen_stop(t);
3440 t->control &= ~(T_STOP);
3441 }
3442
Luiz Capitulino222f1802006-03-20 22:16:13 -08003443 if (t->control & T_RUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003444 pktgen_run(t);
3445 t->control &= ~(T_RUN);
3446 }
3447
Luiz Capitulino222f1802006-03-20 22:16:13 -08003448 if (t->control & T_REMDEVALL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003449 pktgen_rem_all_ifs(t);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003450 t->control &= ~(T_REMDEVALL);
3451 }
3452
Luiz Capitulino222f1802006-03-20 22:16:13 -08003453 if (t->control & T_REMDEV) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003454 pktgen_rem_one_if(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003455 t->control &= ~(T_REMDEV);
3456 }
3457
Andrew Morton09fe3ef2007-04-12 14:45:32 -07003458 try_to_freeze();
3459
David S. Milleree74baa2007-01-01 20:51:53 -08003460 set_current_state(TASK_INTERRUPTIBLE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003461 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003462
Joe Perchesf9467ea2010-06-21 12:29:14 +00003463 pr_debug("%s stopping all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003464 pktgen_stop(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003465
Joe Perchesf9467ea2010-06-21 12:29:14 +00003466 pr_debug("%s removing all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003467 pktgen_rem_all_ifs(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468
Joe Perchesf9467ea2010-06-21 12:29:14 +00003469 pr_debug("%s removing thread\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003470 pktgen_rem_thread(t);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003471
Eric Dumazet551eaff2010-11-21 10:26:44 -08003472 /* Wait for kthread_stop */
3473 while (!kthread_should_stop()) {
3474 set_current_state(TASK_INTERRUPTIBLE);
3475 schedule();
3476 }
3477 __set_current_state(TASK_RUNNING);
3478
David S. Milleree74baa2007-01-01 20:51:53 -08003479 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003480}
3481
Luiz Capitulino222f1802006-03-20 22:16:13 -08003482static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -08003483 const char *ifname, bool exact)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003484{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003485 struct pktgen_dev *p, *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08003486 size_t len = strlen(ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003487
Eric Dumazet3e984842009-11-24 14:50:53 -08003488 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003489 list_for_each_entry(p, &t->if_list, list)
Eric Dumazet3e984842009-11-24 14:50:53 -08003490 if (strncmp(p->odevname, ifname, len) == 0) {
3491 if (p->odevname[len]) {
3492 if (exact || p->odevname[len] != '@')
3493 continue;
3494 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003495 pkt_dev = p;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003496 break;
3497 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003498
Luiz Capitulino222f1802006-03-20 22:16:13 -08003499 if_unlock(t);
Joe Perchesf9467ea2010-06-21 12:29:14 +00003500 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003501 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003502}
3503
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003504/*
3505 * Adds a dev at front of if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003506 */
3507
Luiz Capitulino222f1802006-03-20 22:16:13 -08003508static int add_dev_to_thread(struct pktgen_thread *t,
3509 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003510{
3511 int rv = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003512
Luiz Capitulino222f1802006-03-20 22:16:13 -08003513 if_lock(t);
3514
3515 if (pkt_dev->pg_thread) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003516 pr_err("ERROR: already assigned to a thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003517 rv = -EBUSY;
3518 goto out;
3519 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003520
3521 list_add(&pkt_dev->list, &t->if_list);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003522 pkt_dev->pg_thread = t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003523 pkt_dev->running = 0;
3524
Luiz Capitulino222f1802006-03-20 22:16:13 -08003525out:
3526 if_unlock(t);
3527 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003528}
3529
3530/* Called under thread lock */
3531
Luiz Capitulino222f1802006-03-20 22:16:13 -08003532static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003533{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003534 struct pktgen_dev *pkt_dev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08003535 int err;
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003536 int node = cpu_to_node(t->cpu);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003537
Linus Torvalds1da177e2005-04-16 15:20:36 -07003538 /* We don't allow a device to be on several threads */
3539
Cong Wang4e58a022013-01-28 19:55:53 +00003540 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003541 if (pkt_dev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003542 pr_err("ERROR: interface already used\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003543 return -EBUSY;
3544 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003545
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003546 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003547 if (!pkt_dev)
3548 return -ENOMEM;
3549
Eric Dumazet593f63b2009-11-23 01:44:37 +00003550 strcpy(pkt_dev->odevname, ifname);
WANG Cong68d5ac22011-05-22 00:17:11 +00003551 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003552 node);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003553 if (pkt_dev->flows == NULL) {
3554 kfree(pkt_dev);
3555 return -ENOMEM;
3556 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003557
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003558 pkt_dev->removal_mark = 0;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003559 pkt_dev->nfrags = 0;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003560 pkt_dev->delay = pg_delay_d;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003561 pkt_dev->count = pg_count_d;
3562 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003563 pkt_dev->udp_src_min = 9; /* sink port */
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003564 pkt_dev->udp_src_max = 9;
3565 pkt_dev->udp_dst_min = 9;
3566 pkt_dev->udp_dst_max = 9;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003567 pkt_dev->vlan_p = 0;
3568 pkt_dev->vlan_cfi = 0;
3569 pkt_dev->vlan_id = 0xffff;
3570 pkt_dev->svlan_p = 0;
3571 pkt_dev->svlan_cfi = 0;
3572 pkt_dev->svlan_id = 0xffff;
Robert Olssone99b99b2010-03-18 22:44:30 +00003573 pkt_dev->node = -1;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003574
Cong Wang4e58a022013-01-28 19:55:53 +00003575 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003576 if (err)
3577 goto out1;
Neil Hormand8873312011-07-26 06:05:37 +00003578 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3579 pkt_dev->clone_skb = pg_clone_skb_d;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003580
Cong Wang4e58a022013-01-28 19:55:53 +00003581 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003582 &pktgen_if_fops, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003583 if (!pkt_dev->entry) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003584 pr_err("cannot create %s/%s procfs entry\n",
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003585 PG_PROC_DIR, ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003586 err = -EINVAL;
3587 goto out2;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003588 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003589#ifdef CONFIG_XFRM
3590 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3591 pkt_dev->ipsproto = IPPROTO_ESP;
Fan Ducf93d472014-01-03 11:18:31 +08003592
3593 /* xfrm tunnel mode needs additional dst to extract outter
3594 * ip header protocol/ttl/id field, here creat a phony one.
3595 * instead of looking for a valid rt, which definitely hurting
3596 * performance under such circumstance.
3597 */
3598 pkt_dev->dstops.family = AF_INET;
3599 pkt_dev->dst.dev = pkt_dev->odev;
3600 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3601 pkt_dev->dst.child = &pkt_dev->dst;
3602 pkt_dev->dst.ops = &pkt_dev->dstops;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003603#endif
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003604
3605 return add_dev_to_thread(t, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003606out2:
3607 dev_put(pkt_dev->odev);
3608out1:
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003609#ifdef CONFIG_XFRM
3610 free_SAs(pkt_dev);
3611#endif
Figo.zhang1d0ebfe2009-06-08 00:40:35 -07003612 vfree(pkt_dev->flows);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003613 kfree(pkt_dev);
3614 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003615}
3616
Cong Wang4e58a022013-01-28 19:55:53 +00003617static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003618{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003619 struct pktgen_thread *t;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003620 struct proc_dir_entry *pe;
David S. Milleree74baa2007-01-01 20:51:53 -08003621 struct task_struct *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003622
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003623 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3624 cpu_to_node(cpu));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003625 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003626 pr_err("ERROR: out of memory, can't create new thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003627 return -ENOMEM;
3628 }
3629
Luiz Capitulino222f1802006-03-20 22:16:13 -08003630 spin_lock_init(&t->if_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003631 t->cpu = cpu;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003632
David S. Milleree74baa2007-01-01 20:51:53 -08003633 INIT_LIST_HEAD(&t->if_list);
3634
Cong Wang4e58a022013-01-28 19:55:53 +00003635 list_add_tail(&t->th_list, &pn->pktgen_threads);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003636 init_completion(&t->start_done);
David S. Milleree74baa2007-01-01 20:51:53 -08003637
Eric Dumazet94dcf292011-03-22 16:30:45 -07003638 p = kthread_create_on_node(pktgen_thread_worker,
3639 t,
3640 cpu_to_node(cpu),
3641 "kpktgend_%d", cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003642 if (IS_ERR(p)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003643 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003644 list_del(&t->th_list);
3645 kfree(t);
3646 return PTR_ERR(p);
3647 }
3648 kthread_bind(p, cpu);
3649 t->tsk = p;
3650
Cong Wang4e58a022013-01-28 19:55:53 +00003651 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003652 &pktgen_thread_fops, t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003653 if (!pe) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003654 pr_err("cannot create %s/%s procfs entry\n",
David S. Milleree74baa2007-01-01 20:51:53 -08003655 PG_PROC_DIR, t->tsk->comm);
3656 kthread_stop(p);
3657 list_del(&t->th_list);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003658 kfree(t);
3659 return -EINVAL;
3660 }
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003661
Cong Wang4e58a022013-01-28 19:55:53 +00003662 t->net = pn;
David S. Milleree74baa2007-01-01 20:51:53 -08003663 wake_up_process(p);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003664 wait_for_completion(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003665
3666 return 0;
3667}
3668
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003669/*
3670 * Removes a device from the thread if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003671 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003672static void _rem_dev_from_if_list(struct pktgen_thread *t,
3673 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003674{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003675 struct list_head *q, *n;
3676 struct pktgen_dev *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003677
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003678 list_for_each_safe(q, n, &t->if_list) {
3679 p = list_entry(q, struct pktgen_dev, list);
3680 if (p == pkt_dev)
3681 list_del(&p->list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003682 }
3683}
3684
Luiz Capitulino222f1802006-03-20 22:16:13 -08003685static int pktgen_remove_device(struct pktgen_thread *t,
3686 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003687{
Joe Perchesf9467ea2010-06-21 12:29:14 +00003688 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003689
Luiz Capitulino222f1802006-03-20 22:16:13 -08003690 if (pkt_dev->running) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003691 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003692 pktgen_stop_device(pkt_dev);
3693 }
3694
3695 /* Dis-associate from the interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003696
3697 if (pkt_dev->odev) {
3698 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003699 pkt_dev->odev = NULL;
3700 }
3701
Linus Torvalds1da177e2005-04-16 15:20:36 -07003702 /* And update the thread if_list */
3703
3704 _rem_dev_from_if_list(t, pkt_dev);
3705
Stephen Hemminger39df2322007-03-04 16:11:51 -08003706 if (pkt_dev->entry)
David Howellsa8ca16e2013-04-12 17:27:28 +01003707 proc_remove(pkt_dev->entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003708
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);
Eric Dumazet26ad7872011-01-25 13:26:05 -08003713 if (pkt_dev->page)
3714 put_page(pkt_dev->page);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003715 kfree(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003716 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003717}
3718
Cong Wang4e58a022013-01-28 19:55:53 +00003719static int __net_init pg_net_init(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003720{
Cong Wang4e58a022013-01-28 19:55:53 +00003721 struct pktgen_net *pn = net_generic(net, pg_net_id);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003722 struct proc_dir_entry *pe;
Cong Wang4e58a022013-01-28 19:55:53 +00003723 int cpu, ret = 0;
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003724
Cong Wang4e58a022013-01-28 19:55:53 +00003725 pn->net = net;
3726 INIT_LIST_HEAD(&pn->pktgen_threads);
3727 pn->pktgen_exiting = false;
3728 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3729 if (!pn->proc_dir) {
3730 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
Stephen Hemmingerd50a6b562005-10-14 15:42:33 -07003731 return -ENODEV;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003732 }
Cong Wang4e58a022013-01-28 19:55:53 +00003733 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
3734 if (pe == NULL) {
3735 pr_err("cannot create %s procfs entry\n", PGCTRL);
3736 ret = -EINVAL;
3737 goto remove;
3738 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003739
John Hawkes670c02c2005-10-13 09:30:31 -07003740 for_each_online_cpu(cpu) {
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003741 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003742
Cong Wang4e58a022013-01-28 19:55:53 +00003743 err = pktgen_create_thread(cpu, pn);
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003744 if (err)
Cong Wang4e58a022013-01-28 19:55:53 +00003745 pr_warn("Cannot create thread for cpu %d (%d)\n",
Joe Perchesf9467ea2010-06-21 12:29:14 +00003746 cpu, err);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003747 }
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003748
Cong Wang4e58a022013-01-28 19:55:53 +00003749 if (list_empty(&pn->pktgen_threads)) {
3750 pr_err("Initialization failed for all threads\n");
WANG Congce14f892011-05-22 00:52:08 +00003751 ret = -ENODEV;
Cong Wang4e58a022013-01-28 19:55:53 +00003752 goto remove_entry;
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003753 }
3754
Luiz Capitulino222f1802006-03-20 22:16:13 -08003755 return 0;
WANG Congce14f892011-05-22 00:52:08 +00003756
Cong Wang4e58a022013-01-28 19:55:53 +00003757remove_entry:
3758 remove_proc_entry(PGCTRL, pn->proc_dir);
3759remove:
Gao fengece31ff2013-02-18 01:34:56 +00003760 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
WANG Congce14f892011-05-22 00:52:08 +00003761 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003762}
3763
Cong Wang4e58a022013-01-28 19:55:53 +00003764static void __net_exit pg_net_exit(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003765{
Cong Wang4e58a022013-01-28 19:55:53 +00003766 struct pktgen_net *pn = net_generic(net, pg_net_id);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003767 struct pktgen_thread *t;
3768 struct list_head *q, *n;
Eric Dumazetd4b11332012-05-17 23:52:26 +00003769 LIST_HEAD(list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003770
Luiz Capitulino222f1802006-03-20 22:16:13 -08003771 /* Stop all interfaces & threads */
Cong Wang4e58a022013-01-28 19:55:53 +00003772 pn->pktgen_exiting = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003773
Eric Dumazetc57b5462012-05-09 13:29:51 +00003774 mutex_lock(&pktgen_thread_lock);
Cong Wang4e58a022013-01-28 19:55:53 +00003775 list_splice_init(&pn->pktgen_threads, &list);
Eric Dumazetc57b5462012-05-09 13:29:51 +00003776 mutex_unlock(&pktgen_thread_lock);
3777
3778 list_for_each_safe(q, n, &list) {
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003779 t = list_entry(q, struct pktgen_thread, th_list);
Eric Dumazetc57b5462012-05-09 13:29:51 +00003780 list_del(&t->th_list);
David S. Milleree74baa2007-01-01 20:51:53 -08003781 kthread_stop(t->tsk);
3782 kfree(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003783 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003784
Cong Wang4e58a022013-01-28 19:55:53 +00003785 remove_proc_entry(PGCTRL, pn->proc_dir);
Gao fengece31ff2013-02-18 01:34:56 +00003786 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
Cong Wang4e58a022013-01-28 19:55:53 +00003787}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003788
Cong Wang4e58a022013-01-28 19:55:53 +00003789static struct pernet_operations pg_net_ops = {
3790 .init = pg_net_init,
3791 .exit = pg_net_exit,
3792 .id = &pg_net_id,
3793 .size = sizeof(struct pktgen_net),
3794};
3795
3796static int __init pg_init(void)
3797{
3798 int ret = 0;
3799
3800 pr_info("%s", version);
3801 ret = register_pernet_subsys(&pg_net_ops);
3802 if (ret)
3803 return ret;
3804 ret = register_netdevice_notifier(&pktgen_notifier_block);
3805 if (ret)
3806 unregister_pernet_subsys(&pg_net_ops);
3807
3808 return ret;
3809}
3810
3811static void __exit pg_cleanup(void)
3812{
3813 unregister_netdevice_notifier(&pktgen_notifier_block);
3814 unregister_pernet_subsys(&pg_net_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003815}
3816
Linus Torvalds1da177e2005-04-16 15:20:36 -07003817module_init(pg_init);
3818module_exit(pg_cleanup);
3819
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003820MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003821MODULE_DESCRIPTION("Packet Generator tool");
3822MODULE_LICENSE("GPL");
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003823MODULE_VERSION(VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003824module_param(pg_count_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003825MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003826module_param(pg_delay_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003827MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003828module_param(pg_clone_skb_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003829MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003830module_param(debug, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003831MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");