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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 Hemmingerd50a6b52005-10-14 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>
163#include <net/addrconf.h>
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700164#ifdef CONFIG_XFRM
165#include <net/xfrm.h>
166#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167#include <asm/byteorder.h>
168#include <linux/rcupdate.h>
Jiri Slaby1977f032007-10-18 23:40:25 -0700169#include <linux/bitops.h>
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000170#include <linux/io.h>
171#include <linux/timex.h>
172#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173#include <asm/dma.h>
Luiz Capitulino222f1802006-03-20 22:16:13 -0800174#include <asm/div64.h> /* do_div */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
Daniel Turull43d28b62010-06-09 22:49:57 +0000176#define VERSION "2.74"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177#define IP_NAME_SZ 32
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800178#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -0800179#define MPLS_STACK_BOTTOM htonl(0x00000100)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Joe Perchesf9467ea2010-06-21 12:29:14 +0000181#define func_enter() pr_debug("entering %s\n", __func__);
182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183/* Device flag bits */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800184#define F_IPSRC_RND (1<<0) /* IP-Src Random */
185#define F_IPDST_RND (1<<1) /* IP-Dst Random */
186#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
187#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
188#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
189#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
190#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
191#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800192#define F_MPLS_RND (1<<8) /* Random MPLS labels */
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700193#define F_VID_RND (1<<9) /* Random VLAN ID */
194#define F_SVID_RND (1<<10) /* Random SVLAN ID */
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700195#define F_FLOW_SEQ (1<<11) /* Sequential flows */
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700196#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
Robert Olsson45b270f2007-08-28 15:45:55 -0700197#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
Robert Olssone6fce5b2008-08-07 02:23:01 -0700198#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
Robert Olssone99b99b2010-03-18 22:44:30 +0000199#define F_NODE (1<<15) /* Node memory alloc*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
201/* Thread control flag bits */
Stephen Hemminger6b80d6a2009-09-22 19:41:42 +0000202#define T_STOP (1<<0) /* Stop run */
203#define T_RUN (1<<1) /* Start run */
204#define T_REMDEVALL (1<<2) /* Remove all devs */
205#define T_REMDEV (1<<3) /* Remove one dev */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207/* If lock -- can be removed after some work */
208#define if_lock(t) spin_lock(&(t->if_lock));
209#define if_unlock(t) spin_unlock(&(t->if_lock));
210
211/* Used to help with determining the pkts on receive */
212#define PKTGEN_MAGIC 0xbe9be955
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700213#define PG_PROC_DIR "pktgen"
214#define PGCTRL "pgctrl"
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000215static struct proc_dir_entry *pg_proc_dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216
217#define MAX_CFLOWS 65536
218
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700219#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
220#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
221
Luiz Capitulino222f1802006-03-20 22:16:13 -0800222struct flow_state {
Al Viro252e3342006-11-14 20:48:11 -0800223 __be32 cur_daddr;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800224 int count;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700225#ifdef CONFIG_XFRM
226 struct xfrm_state *x;
227#endif
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700228 __u32 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229};
230
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700231/* flow flag bits */
232#define F_INIT (1<<0) /* flow has been initialized */
233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234struct pktgen_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 /*
236 * Try to keep frequent/infrequent used vars. separated.
237 */
Stephen Hemminger39df2322007-03-04 16:11:51 -0800238 struct proc_dir_entry *entry; /* proc file */
239 struct pktgen_thread *pg_thread;/* the owner */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000240 struct list_head list; /* chaining in the thread's run-queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000242 int running; /* if false, the test will stop */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800243
244 /* If min != max, then we will either do a linear iteration, or
245 * we will do a random selection from within the range.
246 */
247 __u32 flags;
Arthur Kepner95ed63f2006-03-20 21:26:56 -0800248 int removal_mark; /* non-zero => the device is marked for
249 * removal by worker thread */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
Luiz Capitulino222f1802006-03-20 22:16:13 -0800251 int min_pkt_size; /* = ETH_ZLEN; */
252 int max_pkt_size; /* = ETH_ZLEN; */
Jamal Hadi Salim16dab722007-07-02 22:39:50 -0700253 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800254 int nfrags;
Eric Dumazet26ad7872011-01-25 13:26:05 -0800255 struct page *page;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000256 u64 delay; /* nano-seconds */
257
Luiz Capitulino222f1802006-03-20 22:16:13 -0800258 __u64 count; /* Default No packets to send */
259 __u64 sofar; /* How many pkts we've sent so far */
260 __u64 tx_bytes; /* How many bytes we've transmitted */
John Fastabendf466dba2009-12-23 22:02:57 -0800261 __u64 errors; /* Errors when trying to transmit, */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Luiz Capitulino222f1802006-03-20 22:16:13 -0800263 /* runtime counters relating to clone_skb */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
Luiz Capitulino222f1802006-03-20 22:16:13 -0800265 __u64 allocated_skbs;
266 __u32 clone_count;
267 int last_ok; /* Was last skb sent?
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000268 * Or a failed transmit of some sort?
269 * This will keep sequence numbers in order
Luiz Capitulino222f1802006-03-20 22:16:13 -0800270 */
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000271 ktime_t next_tx;
272 ktime_t started_at;
273 ktime_t stopped_at;
274 u64 idle_acc; /* nano-seconds */
275
Luiz Capitulino222f1802006-03-20 22:16:13 -0800276 __u32 seq_num;
277
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000278 int clone_skb; /*
279 * Use multiple SKBs during packet gen.
280 * If this number is greater than 1, then
281 * that many copies of the same packet will be
282 * sent before a new packet is allocated.
283 * If you want to send 1024 identical packets
284 * before creating a new packet,
285 * set clone_skb to 1024.
Luiz Capitulino222f1802006-03-20 22:16:13 -0800286 */
287
288 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
291 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292
293 struct in6_addr in6_saddr;
294 struct in6_addr in6_daddr;
295 struct in6_addr cur_in6_daddr;
296 struct in6_addr cur_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 /* For ranges */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800298 struct in6_addr min_in6_daddr;
299 struct in6_addr max_in6_daddr;
300 struct in6_addr min_in6_saddr;
301 struct in6_addr max_in6_saddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
Luiz Capitulino222f1802006-03-20 22:16:13 -0800303 /* If we're doing ranges, random or incremental, then this
304 * defines the min/max for those ranges.
305 */
Al Viro252e3342006-11-14 20:48:11 -0800306 __be32 saddr_min; /* inclusive, source IP address */
307 __be32 saddr_max; /* exclusive, source IP address */
308 __be32 daddr_min; /* inclusive, dest IP address */
309 __be32 daddr_max; /* exclusive, dest IP address */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Luiz Capitulino222f1802006-03-20 22:16:13 -0800311 __u16 udp_src_min; /* inclusive, source UDP port */
312 __u16 udp_src_max; /* exclusive, source UDP port */
313 __u16 udp_dst_min; /* inclusive, dest UDP port */
314 __u16 udp_dst_max; /* exclusive, dest UDP port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700316 /* DSCP + ECN */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000317 __u8 tos; /* six MSB of (former) IPv4 TOS
318 are for dscp codepoint */
319 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
320 (see RFC 3260, sec. 4) */
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700321
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800322 /* MPLS */
323 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
324 __be32 labels[MAX_MPLS_LABELS];
325
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700326 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
327 __u8 vlan_p;
328 __u8 vlan_cfi;
329 __u16 vlan_id; /* 0xffff means no vlan tag */
330
331 __u8 svlan_p;
332 __u8 svlan_cfi;
333 __u16 svlan_id; /* 0xffff means no svlan tag */
334
Luiz Capitulino222f1802006-03-20 22:16:13 -0800335 __u32 src_mac_count; /* How many MACs to iterate through */
336 __u32 dst_mac_count; /* How many MACs to iterate through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
Luiz Capitulino222f1802006-03-20 22:16:13 -0800338 unsigned char dst_mac[ETH_ALEN];
339 unsigned char src_mac[ETH_ALEN];
340
341 __u32 cur_dst_mac_offset;
342 __u32 cur_src_mac_offset;
Al Viro252e3342006-11-14 20:48:11 -0800343 __be32 cur_saddr;
344 __be32 cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -0700345 __u16 ip_id;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800346 __u16 cur_udp_dst;
347 __u16 cur_udp_src;
Robert Olsson45b270f2007-08-28 15:45:55 -0700348 __u16 cur_queue_map;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800349 __u32 cur_pkt_size;
Eric Dumazetbaac8562009-11-05 21:04:32 -0800350 __u32 last_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800351
352 __u8 hh[14];
353 /* = {
354 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
355
356 We fill in SRC address later
357 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
358 0x08, 0x00
359 };
360 */
361 __u16 pad; /* pad out the hh struct to an even 16 bytes */
362
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000363 struct sk_buff *skb; /* skb we are to transmit next, used for when we
Luiz Capitulino222f1802006-03-20 22:16:13 -0800364 * are transmitting the same one multiple times
365 */
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000366 struct net_device *odev; /* The out-going device.
367 * Note that the device should have it's
368 * pg_info pointer pointing back to this
369 * device.
370 * Set when the user specifies the out-going
371 * device name (not when the inject is
372 * started as it used to do.)
373 */
Eric Dumazet593f63b2009-11-23 01:44:37 +0000374 char odevname[32];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 struct flow_state *flows;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800376 unsigned cflows; /* Concurrent flows (config) */
377 unsigned lflow; /* Flow length (config) */
378 unsigned nflows; /* accumulated flows (stats) */
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700379 unsigned curfl; /* current sequenced flow (state)*/
Robert Olsson45b270f2007-08-28 15:45:55 -0700380
381 u16 queue_map_min;
382 u16 queue_map_max;
John Fastabend9e50e3a2010-11-16 19:12:28 +0000383 __u32 skb_priority; /* skb priority field */
Robert Olssone99b99b2010-03-18 22:44:30 +0000384 int node; /* Memory node */
Robert Olsson45b270f2007-08-28 15:45:55 -0700385
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700386#ifdef CONFIG_XFRM
387 __u8 ipsmode; /* IPSEC mode (config) */
388 __u8 ipsproto; /* IPSEC type (config) */
389#endif
Stephen Hemminger39df2322007-03-04 16:11:51 -0800390 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391};
392
393struct pktgen_hdr {
Al Viro252e3342006-11-14 20:48:11 -0800394 __be32 pgh_magic;
395 __be32 seq_num;
396 __be32 tv_sec;
397 __be32 tv_usec;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398};
399
Eric Dumazet551eaff2010-11-21 10:26:44 -0800400static bool pktgen_exiting __read_mostly;
401
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402struct pktgen_thread {
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000403 spinlock_t if_lock; /* for list of devices */
Luiz Capitulinoc26a8012006-03-20 22:18:16 -0800404 struct list_head if_list; /* All device here */
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800405 struct list_head th_list;
David S. Milleree74baa2007-01-01 20:51:53 -0800406 struct task_struct *tsk;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800407 char result[512];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000409 /* Field for thread to receive "posted" events terminate,
410 stop ifs etc. */
Luiz Capitulino222f1802006-03-20 22:16:13 -0800411
412 u32 control;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 int cpu;
414
Luiz Capitulino222f1802006-03-20 22:16:13 -0800415 wait_queue_head_t queue;
Denis V. Lunevd3ede322008-05-20 15:12:44 -0700416 struct completion start_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417};
418
419#define REMOVE 1
420#define FIND 0
421
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000422static inline ktime_t ktime_now(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000424 struct timespec ts;
425 ktime_get_ts(&ts);
426
427 return timespec_to_ktime(ts);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428}
429
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000430/* This works even if 32 bit because of careful byte order choice */
431static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000433 return cmp1.tv64 < cmp2.tv64;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000436static const char version[] =
Joe Perchesf9467ea2010-06-21 12:29:14 +0000437 "Packet Generator for packet performance testing. "
438 "Version: " VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
Luiz Capitulino222f1802006-03-20 22:16:13 -0800440static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
441static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
442static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -0800443 const char *ifname, bool exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
445static void pktgen_run_all_threads(void);
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800446static void pktgen_reset_all_threads(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447static void pktgen_stop_all_threads_ifs(void);
Stephen Hemminger3bda06a2009-08-27 13:55:10 +0000448
Luiz Capitulino222f1802006-03-20 22:16:13 -0800449static void pktgen_stop(struct pktgen_thread *t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -0800451
Luiz Capitulino222f1802006-03-20 22:16:13 -0800452static unsigned int scan_ip6(const char *s, char ip[16]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
454/* Module parameters, defaults. */
Stephen Hemminger65c5b782009-08-27 13:55:09 +0000455static int pg_count_d __read_mostly = 1000;
456static int pg_delay_d __read_mostly;
457static int pg_clone_skb_d __read_mostly;
458static int debug __read_mostly;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
Luiz Capitulino222fa072006-03-20 22:24:27 -0800460static DEFINE_MUTEX(pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -0800461static LIST_HEAD(pktgen_threads);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463static struct notifier_block pktgen_notifier_block = {
464 .notifier_call = pktgen_device_event,
465};
466
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467/*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900468 * /proc handling functions
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 *
470 */
471
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700472static int pgctrl_show(struct seq_file *seq, void *v)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800473{
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +0000474 seq_puts(seq, version);
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700475 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476}
477
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000478static ssize_t pgctrl_write(struct file *file, const char __user *buf,
479 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 int err = 0;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700482 char data[128];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
Luiz Capitulino222f1802006-03-20 22:16:13 -0800484 if (!capable(CAP_NET_ADMIN)) {
485 err = -EPERM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 goto out;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800487 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700489 if (count > sizeof(data))
490 count = sizeof(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 if (copy_from_user(data, buf, count)) {
Stephen Hemmingerb4099fa2005-10-14 15:32:22 -0700493 err = -EFAULT;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700494 goto out;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800495 }
496 data[count - 1] = 0; /* Make string */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
Luiz Capitulino222f1802006-03-20 22:16:13 -0800498 if (!strcmp(data, "stop"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 pktgen_stop_all_threads_ifs();
500
Luiz Capitulino222f1802006-03-20 22:16:13 -0800501 else if (!strcmp(data, "start"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 pktgen_run_all_threads();
503
Jesse Brandeburgeb37b412008-11-10 16:48:03 -0800504 else if (!strcmp(data, "reset"))
505 pktgen_reset_all_threads();
506
Luiz Capitulino222f1802006-03-20 22:16:13 -0800507 else
Joe Perchesf9467ea2010-06-21 12:29:14 +0000508 pr_warning("Unknown command: %s\n", data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
510 err = count;
511
Luiz Capitulino222f1802006-03-20 22:16:13 -0800512out:
513 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514}
515
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700516static int pgctrl_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517{
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700518 return single_open(file, pgctrl_show, PDE(inode)->data);
519}
520
Arjan van de Ven9a321442007-02-12 00:55:35 -0800521static const struct file_operations pktgen_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800522 .owner = THIS_MODULE,
523 .open = pgctrl_open,
524 .read = seq_read,
525 .llseek = seq_lseek,
526 .write = pgctrl_write,
527 .release = single_release,
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700528};
529
530static int pktgen_if_show(struct seq_file *seq, void *v)
531{
Stephen Hemminger648fda72009-08-27 13:55:07 +0000532 const struct pktgen_dev *pkt_dev = seq->private;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000533 ktime_t stopped;
534 u64 idle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535
Luiz Capitulino222f1802006-03-20 22:16:13 -0800536 seq_printf(seq,
537 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
538 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
539 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
Luiz Capitulino222f1802006-03-20 22:16:13 -0800541 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000542 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
543 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
Eric Dumazet593f63b2009-11-23 01:44:37 +0000544 pkt_dev->clone_skb, pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545
Luiz Capitulino222f1802006-03-20 22:16:13 -0800546 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
547 pkt_dev->lflow);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
Robert Olsson45b270f2007-08-28 15:45:55 -0700549 seq_printf(seq,
550 " queue_map_min: %u queue_map_max: %u\n",
551 pkt_dev->queue_map_min,
552 pkt_dev->queue_map_max);
553
John Fastabend9e50e3a2010-11-16 19:12:28 +0000554 if (pkt_dev->skb_priority)
555 seq_printf(seq, " skb_priority: %u\n",
556 pkt_dev->skb_priority);
557
Luiz Capitulino222f1802006-03-20 22:16:13 -0800558 if (pkt_dev->flags & F_IPV6) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800559 seq_printf(seq,
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000560 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
561 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
562 &pkt_dev->in6_saddr,
563 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
564 &pkt_dev->in6_daddr,
565 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000566 } else {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800567 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000568 " dst_min: %s dst_max: %s\n",
569 pkt_dev->dst_min, pkt_dev->dst_max);
570 seq_printf(seq,
571 " src_min: %s src_max: %s\n",
572 pkt_dev->src_min, pkt_dev->src_max);
573 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700575 seq_puts(seq, " src_mac: ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
Johannes Berge1749612008-10-27 15:59:26 -0700577 seq_printf(seq, "%pM ",
578 is_zero_ether_addr(pkt_dev->src_mac) ?
579 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580
Luiz Capitulino222f1802006-03-20 22:16:13 -0800581 seq_printf(seq, "dst_mac: ");
Johannes Berge1749612008-10-27 15:59:26 -0700582 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Luiz Capitulino222f1802006-03-20 22:16:13 -0800584 seq_printf(seq,
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000585 " udp_src_min: %d udp_src_max: %d"
586 " udp_dst_min: %d udp_dst_max: %d\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800587 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
588 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589
Luiz Capitulino222f1802006-03-20 22:16:13 -0800590 seq_printf(seq,
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800591 " src_mac_count: %d dst_mac_count: %d\n",
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700592 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800594 if (pkt_dev->nr_labels) {
595 unsigned i;
596 seq_printf(seq, " mpls: ");
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700597 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800598 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
599 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
600 }
601
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000602 if (pkt_dev->vlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700603 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000604 pkt_dev->vlan_id, pkt_dev->vlan_p,
605 pkt_dev->vlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700606
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000607 if (pkt_dev->svlan_id != 0xffff)
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700608 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000609 pkt_dev->svlan_id, pkt_dev->svlan_p,
610 pkt_dev->svlan_cfi);
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700611
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000612 if (pkt_dev->tos)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700613 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700614
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000615 if (pkt_dev->traffic_class)
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700616 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700617
Robert Olssone99b99b2010-03-18 22:44:30 +0000618 if (pkt_dev->node >= 0)
619 seq_printf(seq, " node: %d\n", pkt_dev->node);
620
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800621 seq_printf(seq, " Flags: ");
622
Luiz Capitulino222f1802006-03-20 22:16:13 -0800623 if (pkt_dev->flags & F_IPV6)
624 seq_printf(seq, "IPV6 ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
Luiz Capitulino222f1802006-03-20 22:16:13 -0800626 if (pkt_dev->flags & F_IPSRC_RND)
627 seq_printf(seq, "IPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
Luiz Capitulino222f1802006-03-20 22:16:13 -0800629 if (pkt_dev->flags & F_IPDST_RND)
630 seq_printf(seq, "IPDST_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631
Luiz Capitulino222f1802006-03-20 22:16:13 -0800632 if (pkt_dev->flags & F_TXSIZE_RND)
633 seq_printf(seq, "TXSIZE_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Luiz Capitulino222f1802006-03-20 22:16:13 -0800635 if (pkt_dev->flags & F_UDPSRC_RND)
636 seq_printf(seq, "UDPSRC_RND ");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637
Luiz Capitulino222f1802006-03-20 22:16:13 -0800638 if (pkt_dev->flags & F_UDPDST_RND)
639 seq_printf(seq, "UDPDST_RND ");
640
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800641 if (pkt_dev->flags & F_MPLS_RND)
642 seq_printf(seq, "MPLS_RND ");
643
Robert Olsson45b270f2007-08-28 15:45:55 -0700644 if (pkt_dev->flags & F_QUEUE_MAP_RND)
645 seq_printf(seq, "QUEUE_MAP_RND ");
646
Robert Olssone6fce5b2008-08-07 02:23:01 -0700647 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
648 seq_printf(seq, "QUEUE_MAP_CPU ");
649
Jamal Hadi Salim007a5312007-07-02 22:40:36 -0700650 if (pkt_dev->cflows) {
651 if (pkt_dev->flags & F_FLOW_SEQ)
652 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
653 else
654 seq_printf(seq, "FLOW_RND ");
655 }
656
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -0700657#ifdef CONFIG_XFRM
658 if (pkt_dev->flags & F_IPSEC_ON)
659 seq_printf(seq, "IPSEC ");
660#endif
661
Luiz Capitulino222f1802006-03-20 22:16:13 -0800662 if (pkt_dev->flags & F_MACSRC_RND)
663 seq_printf(seq, "MACSRC_RND ");
664
665 if (pkt_dev->flags & F_MACDST_RND)
666 seq_printf(seq, "MACDST_RND ");
667
Francesco Fondelli34954dd2006-09-27 16:30:44 -0700668 if (pkt_dev->flags & F_VID_RND)
669 seq_printf(seq, "VID_RND ");
670
671 if (pkt_dev->flags & F_SVID_RND)
672 seq_printf(seq, "SVID_RND ");
673
Robert Olssone99b99b2010-03-18 22:44:30 +0000674 if (pkt_dev->flags & F_NODE)
675 seq_printf(seq, "NODE_ALLOC ");
676
Luiz Capitulino222f1802006-03-20 22:16:13 -0800677 seq_puts(seq, "\n");
678
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000679 /* not really stopped, more like last-running-at */
680 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
681 idle = pkt_dev->idle_acc;
682 do_div(idle, NSEC_PER_USEC);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800683
684 seq_printf(seq,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000685 "Current:\n pkts-sofar: %llu errors: %llu\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -0800686 (unsigned long long)pkt_dev->sofar,
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000687 (unsigned long long)pkt_dev->errors);
688
689 seq_printf(seq,
690 " started: %lluus stopped: %lluus idle: %lluus\n",
691 (unsigned long long) ktime_to_us(pkt_dev->started_at),
692 (unsigned long long) ktime_to_us(stopped),
693 (unsigned long long) idle);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800694
695 seq_printf(seq,
696 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700697 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
698 pkt_dev->cur_src_mac_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Luiz Capitulino222f1802006-03-20 22:16:13 -0800700 if (pkt_dev->flags & F_IPV6) {
Alexey Dobriyan47a02002011-05-03 11:23:40 +0000701 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
702 &pkt_dev->cur_in6_saddr,
703 &pkt_dev->cur_in6_daddr);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800704 } else
705 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700706 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707
Luiz Capitulino222f1802006-03-20 22:16:13 -0800708 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700709 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
Robert Olsson45b270f2007-08-28 15:45:55 -0700711 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
712
Luiz Capitulino222f1802006-03-20 22:16:13 -0800713 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714
715 if (pkt_dev->result[0])
Luiz Capitulino222f1802006-03-20 22:16:13 -0800716 seq_printf(seq, "Result: %s\n", pkt_dev->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 else
Luiz Capitulino222f1802006-03-20 22:16:13 -0800718 seq_printf(seq, "Result: Idle\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -0700720 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721}
722
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800723
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000724static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
725 __u32 *num)
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800726{
727 int i = 0;
728 *num = 0;
729
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700730 for (; i < maxlen; i++) {
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000731 int value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800732 char c;
733 *num <<= 4;
734 if (get_user(c, &user_buffer[i]))
735 return -EFAULT;
Andy Shevchenko82fd5b52010-09-20 20:40:26 +0000736 value = hex_to_bin(c);
737 if (value >= 0)
738 *num |= value;
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800739 else
740 break;
741 }
742 return i;
743}
744
Luiz Capitulino222f1802006-03-20 22:16:13 -0800745static int count_trail_chars(const char __user * user_buffer,
746 unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747{
748 int i;
749
750 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800751 char c;
752 if (get_user(c, &user_buffer[i]))
753 return -EFAULT;
754 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 case '\"':
756 case '\n':
757 case '\r':
758 case '\t':
759 case ' ':
760 case '=':
761 break;
762 default:
763 goto done;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700764 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 }
766done:
767 return i;
768}
769
Luiz Capitulino222f1802006-03-20 22:16:13 -0800770static unsigned long num_arg(const char __user * user_buffer,
771 unsigned long maxlen, unsigned long *num)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000773 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 *num = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800775
Paul Gortmakerd6182222010-10-18 12:14:44 +0000776 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800777 char c;
778 if (get_user(c, &user_buffer[i]))
779 return -EFAULT;
780 if ((c >= '0') && (c <= '9')) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 *num *= 10;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800782 *num += c - '0';
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 } else
784 break;
785 }
786 return i;
787}
788
Luiz Capitulino222f1802006-03-20 22:16:13 -0800789static int strn_len(const char __user * user_buffer, unsigned int maxlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790{
Paul Gortmakerd6182222010-10-18 12:14:44 +0000791 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
Paul Gortmakerd6182222010-10-18 12:14:44 +0000793 for (i = 0; i < maxlen; i++) {
Luiz Capitulino222f1802006-03-20 22:16:13 -0800794 char c;
795 if (get_user(c, &user_buffer[i]))
796 return -EFAULT;
797 switch (c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 case '\"':
799 case '\n':
800 case '\r':
801 case '\t':
802 case ' ':
803 goto done_str;
804 break;
805 default:
806 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -0700807 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808 }
809done_str:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 return i;
811}
812
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800813static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
814{
815 unsigned n = 0;
816 char c;
817 ssize_t i = 0;
818 int len;
819
820 pkt_dev->nr_labels = 0;
821 do {
822 __u32 tmp;
Francesco Fondelli1ca77682006-09-27 16:32:03 -0700823 len = hex32_arg(&buffer[i], 8, &tmp);
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800824 if (len <= 0)
825 return len;
826 pkt_dev->labels[n] = htonl(tmp);
827 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
828 pkt_dev->flags |= F_MPLS_RND;
829 i += len;
830 if (get_user(c, &buffer[i]))
831 return -EFAULT;
832 i++;
833 n++;
834 if (n >= MAX_MPLS_LABELS)
835 return -E2BIG;
Stephen Hemmingere71a4782007-04-10 20:10:33 -0700836 } while (c == ',');
Steven Whitehouseca6549a2006-03-23 01:10:26 -0800837
838 pkt_dev->nr_labels = n;
839 return i;
840}
841
Luiz Capitulino222f1802006-03-20 22:16:13 -0800842static ssize_t pktgen_if_write(struct file *file,
843 const char __user * user_buffer, size_t count,
844 loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845{
Joe Perches8a994a72010-07-12 10:50:23 +0000846 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800847 struct pktgen_dev *pkt_dev = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +0000848 int i, max, len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 char name[16], valstr[32];
850 unsigned long value = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800851 char *pg_result = NULL;
852 int tmp = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 char buf[128];
Luiz Capitulino222f1802006-03-20 22:16:13 -0800854
855 pg_result = &(pkt_dev->result[0]);
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 if (count < 1) {
Joe Perchesf9467ea2010-06-21 12:29:14 +0000858 pr_warning("wrong command format\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859 return -EINVAL;
860 }
Luiz Capitulino222f1802006-03-20 22:16:13 -0800861
Paul Gortmakerd6182222010-10-18 12:14:44 +0000862 max = count;
863 tmp = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800864 if (tmp < 0) {
Joe Perchesf9467ea2010-06-21 12:29:14 +0000865 pr_warning("illegal format\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -0800866 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867 }
Paul Gortmakerd6182222010-10-18 12:14:44 +0000868 i = tmp;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 /* Read variable name */
871
872 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000873 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800874 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000875
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 memset(name, 0, sizeof(name));
Luiz Capitulino222f1802006-03-20 22:16:13 -0800877 if (copy_from_user(name, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878 return -EFAULT;
879 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800880
881 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -0800883 if (len < 0)
884 return len;
885
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 i += len;
887
888 if (debug) {
Dmitry Torokhov86c2c0a2010-11-06 20:11:38 +0000889 size_t copy = min_t(size_t, count, 1023);
Nelson Elhage448d7b52010-10-28 11:31:07 -0700890 char tb[copy + 1];
891 if (copy_from_user(tb, user_buffer, copy))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 return -EFAULT;
Nelson Elhage448d7b52010-10-28 11:31:07 -0700893 tb[copy] = 0;
David S. Miller25a8b252007-07-30 16:11:48 -0700894 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
Luiz Capitulino222f1802006-03-20 22:16:13 -0800895 (unsigned long)count, tb);
896 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
898 if (!strcmp(name, "min_pkt_size")) {
899 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000900 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800901 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800904 if (value < 14 + 20 + 8)
905 value = 14 + 20 + 8;
906 if (value != pkt_dev->min_pkt_size) {
907 pkt_dev->min_pkt_size = value;
908 pkt_dev->cur_pkt_size = value;
909 }
910 sprintf(pg_result, "OK: min_pkt_size=%u",
911 pkt_dev->min_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 return count;
913 }
914
Luiz Capitulino222f1802006-03-20 22:16:13 -0800915 if (!strcmp(name, "max_pkt_size")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000917 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800918 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000919
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800921 if (value < 14 + 20 + 8)
922 value = 14 + 20 + 8;
923 if (value != pkt_dev->max_pkt_size) {
924 pkt_dev->max_pkt_size = value;
925 pkt_dev->cur_pkt_size = value;
926 }
927 sprintf(pg_result, "OK: max_pkt_size=%u",
928 pkt_dev->max_pkt_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 return count;
930 }
931
Luiz Capitulino222f1802006-03-20 22:16:13 -0800932 /* Shortcut for min = max */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933
934 if (!strcmp(name, "pkt_size")) {
935 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000936 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800937 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000938
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800940 if (value < 14 + 20 + 8)
941 value = 14 + 20 + 8;
942 if (value != pkt_dev->min_pkt_size) {
943 pkt_dev->min_pkt_size = value;
944 pkt_dev->max_pkt_size = value;
945 pkt_dev->cur_pkt_size = value;
946 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
948 return count;
949 }
950
Luiz Capitulino222f1802006-03-20 22:16:13 -0800951 if (!strcmp(name, "debug")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000953 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800954 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000955
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -0800957 debug = value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 sprintf(pg_result, "OK: debug=%u", debug);
959 return count;
960 }
961
Luiz Capitulino222f1802006-03-20 22:16:13 -0800962 if (!strcmp(name, "frags")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000964 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800965 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000966
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 i += len;
968 pkt_dev->nfrags = value;
969 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
970 return count;
971 }
972 if (!strcmp(name, "delay")) {
973 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000974 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -0800975 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +0000976
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 i += len;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000978 if (value == 0x7FFFFFFF)
979 pkt_dev->delay = ULLONG_MAX;
980 else
Eric Dumazet9240d712009-10-03 01:39:18 +0000981 pkt_dev->delay = (u64)value;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +0000982
983 sprintf(pg_result, "OK: delay=%llu",
984 (unsigned long long) pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985 return count;
986 }
Daniel Turull43d28b62010-06-09 22:49:57 +0000987 if (!strcmp(name, "rate")) {
988 len = num_arg(&user_buffer[i], 10, &value);
989 if (len < 0)
990 return len;
991
992 i += len;
993 if (!value)
994 return len;
995 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
996 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +0000997 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +0000998
999 sprintf(pg_result, "OK: rate=%lu", value);
1000 return count;
1001 }
1002 if (!strcmp(name, "ratep")) {
1003 len = num_arg(&user_buffer[i], 10, &value);
1004 if (len < 0)
1005 return len;
1006
1007 i += len;
1008 if (!value)
1009 return len;
1010 pkt_dev->delay = NSEC_PER_SEC/value;
1011 if (debug)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001012 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
Daniel Turull43d28b62010-06-09 22:49:57 +00001013
1014 sprintf(pg_result, "OK: rate=%lu", value);
1015 return count;
1016 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001017 if (!strcmp(name, "udp_src_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001019 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001020 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001021
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001023 if (value != pkt_dev->udp_src_min) {
1024 pkt_dev->udp_src_min = value;
1025 pkt_dev->cur_udp_src = value;
1026 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1028 return count;
1029 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001030 if (!strcmp(name, "udp_dst_min")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001032 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001033 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001034
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001036 if (value != pkt_dev->udp_dst_min) {
1037 pkt_dev->udp_dst_min = value;
1038 pkt_dev->cur_udp_dst = value;
1039 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1041 return count;
1042 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001043 if (!strcmp(name, "udp_src_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001045 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001046 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001049 if (value != pkt_dev->udp_src_max) {
1050 pkt_dev->udp_src_max = value;
1051 pkt_dev->cur_udp_src = value;
1052 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1054 return count;
1055 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001056 if (!strcmp(name, "udp_dst_max")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001058 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001059 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001060
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001062 if (value != pkt_dev->udp_dst_max) {
1063 pkt_dev->udp_dst_max = value;
1064 pkt_dev->cur_udp_dst = value;
1065 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1067 return count;
1068 }
1069 if (!strcmp(name, "clone_skb")) {
1070 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001071 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001072 return len;
Neil Hormand8873312011-07-26 06:05:37 +00001073 if ((value > 0) &&
1074 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1075 return -ENOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001077 pkt_dev->clone_skb = value;
1078
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1080 return count;
1081 }
1082 if (!strcmp(name, "count")) {
1083 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001084 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001085 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001086
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087 i += len;
1088 pkt_dev->count = value;
1089 sprintf(pg_result, "OK: count=%llu",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001090 (unsigned long long)pkt_dev->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 return count;
1092 }
1093 if (!strcmp(name, "src_mac_count")) {
1094 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001095 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001096 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001097
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 i += len;
1099 if (pkt_dev->src_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001100 pkt_dev->src_mac_count = value;
1101 pkt_dev->cur_src_mac_offset = 0;
1102 }
1103 sprintf(pg_result, "OK: src_mac_count=%d",
1104 pkt_dev->src_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 return count;
1106 }
1107 if (!strcmp(name, "dst_mac_count")) {
1108 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001109 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001110 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001111
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112 i += len;
1113 if (pkt_dev->dst_mac_count != value) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001114 pkt_dev->dst_mac_count = value;
1115 pkt_dev->cur_dst_mac_offset = 0;
1116 }
1117 sprintf(pg_result, "OK: dst_mac_count=%d",
1118 pkt_dev->dst_mac_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 return count;
1120 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001121 if (!strcmp(name, "node")) {
1122 len = num_arg(&user_buffer[i], 10, &value);
1123 if (len < 0)
1124 return len;
1125
1126 i += len;
1127
1128 if (node_possible(value)) {
1129 pkt_dev->node = value;
1130 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
Eric Dumazet26ad7872011-01-25 13:26:05 -08001131 if (pkt_dev->page) {
1132 put_page(pkt_dev->page);
1133 pkt_dev->page = NULL;
1134 }
Robert Olssone99b99b2010-03-18 22:44:30 +00001135 }
1136 else
1137 sprintf(pg_result, "ERROR: node not possible");
1138 return count;
1139 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 if (!strcmp(name, "flag")) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001141 char f[32];
1142 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001144 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001145 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001146
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 if (copy_from_user(f, &user_buffer[i], len))
1148 return -EFAULT;
1149 i += len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001150 if (strcmp(f, "IPSRC_RND") == 0)
1151 pkt_dev->flags |= F_IPSRC_RND;
1152
1153 else if (strcmp(f, "!IPSRC_RND") == 0)
1154 pkt_dev->flags &= ~F_IPSRC_RND;
1155
1156 else if (strcmp(f, "TXSIZE_RND") == 0)
1157 pkt_dev->flags |= F_TXSIZE_RND;
1158
1159 else if (strcmp(f, "!TXSIZE_RND") == 0)
1160 pkt_dev->flags &= ~F_TXSIZE_RND;
1161
1162 else if (strcmp(f, "IPDST_RND") == 0)
1163 pkt_dev->flags |= F_IPDST_RND;
1164
1165 else if (strcmp(f, "!IPDST_RND") == 0)
1166 pkt_dev->flags &= ~F_IPDST_RND;
1167
1168 else if (strcmp(f, "UDPSRC_RND") == 0)
1169 pkt_dev->flags |= F_UDPSRC_RND;
1170
1171 else if (strcmp(f, "!UDPSRC_RND") == 0)
1172 pkt_dev->flags &= ~F_UDPSRC_RND;
1173
1174 else if (strcmp(f, "UDPDST_RND") == 0)
1175 pkt_dev->flags |= F_UDPDST_RND;
1176
1177 else if (strcmp(f, "!UDPDST_RND") == 0)
1178 pkt_dev->flags &= ~F_UDPDST_RND;
1179
1180 else if (strcmp(f, "MACSRC_RND") == 0)
1181 pkt_dev->flags |= F_MACSRC_RND;
1182
1183 else if (strcmp(f, "!MACSRC_RND") == 0)
1184 pkt_dev->flags &= ~F_MACSRC_RND;
1185
1186 else if (strcmp(f, "MACDST_RND") == 0)
1187 pkt_dev->flags |= F_MACDST_RND;
1188
1189 else if (strcmp(f, "!MACDST_RND") == 0)
1190 pkt_dev->flags &= ~F_MACDST_RND;
1191
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001192 else if (strcmp(f, "MPLS_RND") == 0)
1193 pkt_dev->flags |= F_MPLS_RND;
1194
1195 else if (strcmp(f, "!MPLS_RND") == 0)
1196 pkt_dev->flags &= ~F_MPLS_RND;
1197
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001198 else if (strcmp(f, "VID_RND") == 0)
1199 pkt_dev->flags |= F_VID_RND;
1200
1201 else if (strcmp(f, "!VID_RND") == 0)
1202 pkt_dev->flags &= ~F_VID_RND;
1203
1204 else if (strcmp(f, "SVID_RND") == 0)
1205 pkt_dev->flags |= F_SVID_RND;
1206
1207 else if (strcmp(f, "!SVID_RND") == 0)
1208 pkt_dev->flags &= ~F_SVID_RND;
1209
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07001210 else if (strcmp(f, "FLOW_SEQ") == 0)
1211 pkt_dev->flags |= F_FLOW_SEQ;
1212
Robert Olsson45b270f2007-08-28 15:45:55 -07001213 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1214 pkt_dev->flags |= F_QUEUE_MAP_RND;
1215
1216 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1217 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
Robert Olssone6fce5b2008-08-07 02:23:01 -07001218
1219 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1220 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1221
1222 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1223 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07001224#ifdef CONFIG_XFRM
1225 else if (strcmp(f, "IPSEC") == 0)
1226 pkt_dev->flags |= F_IPSEC_ON;
1227#endif
1228
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001229 else if (strcmp(f, "!IPV6") == 0)
1230 pkt_dev->flags &= ~F_IPV6;
1231
Robert Olssone99b99b2010-03-18 22:44:30 +00001232 else if (strcmp(f, "NODE_ALLOC") == 0)
1233 pkt_dev->flags |= F_NODE;
1234
1235 else if (strcmp(f, "!NODE_ALLOC") == 0)
1236 pkt_dev->flags &= ~F_NODE;
1237
Luiz Capitulino222f1802006-03-20 22:16:13 -08001238 else {
1239 sprintf(pg_result,
1240 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1241 f,
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001242 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
Robert Olssone99b99b2010-03-18 22:44:30 +00001243 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001244 return count;
1245 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1247 return count;
1248 }
1249 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1250 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001251 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001252 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253
Luiz Capitulino222f1802006-03-20 22:16:13 -08001254 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001256 buf[len] = 0;
1257 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1258 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1259 strncpy(pkt_dev->dst_min, buf, len);
1260 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1261 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1262 }
1263 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001264 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001265 pkt_dev->dst_min);
1266 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1268 return count;
1269 }
1270 if (!strcmp(name, "dst_max")) {
1271 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001272 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001273 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001274
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275
Luiz Capitulino222f1802006-03-20 22:16:13 -08001276 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277 return -EFAULT;
1278
Luiz Capitulino222f1802006-03-20 22:16:13 -08001279 buf[len] = 0;
1280 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1281 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1282 strncpy(pkt_dev->dst_max, buf, len);
1283 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1284 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1285 }
1286 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001287 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001288 pkt_dev->dst_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 i += len;
1290 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1291 return count;
1292 }
1293 if (!strcmp(name, "dst6")) {
1294 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001295 if (len < 0)
1296 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297
1298 pkt_dev->flags |= F_IPV6;
1299
Luiz Capitulino222f1802006-03-20 22:16:13 -08001300 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001302 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303
1304 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001305 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306
1307 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1308
Luiz Capitulino222f1802006-03-20 22:16:13 -08001309 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001310 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311
Luiz Capitulino222f1802006-03-20 22:16:13 -08001312 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 sprintf(pg_result, "OK: dst6=%s", buf);
1314 return count;
1315 }
1316 if (!strcmp(name, "dst6_min")) {
1317 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001318 if (len < 0)
1319 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001320
1321 pkt_dev->flags |= F_IPV6;
1322
Luiz Capitulino222f1802006-03-20 22:16:13 -08001323 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001325 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326
1327 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001328 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329
Luiz Capitulino222f1802006-03-20 22:16:13 -08001330 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1331 &pkt_dev->min_in6_daddr);
1332 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001333 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334
Luiz Capitulino222f1802006-03-20 22:16:13 -08001335 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336 sprintf(pg_result, "OK: dst6_min=%s", buf);
1337 return count;
1338 }
1339 if (!strcmp(name, "dst6_max")) {
1340 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001341 if (len < 0)
1342 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343
1344 pkt_dev->flags |= F_IPV6;
1345
Luiz Capitulino222f1802006-03-20 22:16:13 -08001346 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001348 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
1350 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001351 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
Luiz Capitulino222f1802006-03-20 22:16:13 -08001353 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001354 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355
Luiz Capitulino222f1802006-03-20 22:16:13 -08001356 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357 sprintf(pg_result, "OK: dst6_max=%s", buf);
1358 return count;
1359 }
1360 if (!strcmp(name, "src6")) {
1361 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001362 if (len < 0)
1363 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364
1365 pkt_dev->flags |= F_IPV6;
1366
Luiz Capitulino222f1802006-03-20 22:16:13 -08001367 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001369 buf[len] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370
1371 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
Alexey Dobriyan47a02002011-05-03 11:23:40 +00001372 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373
1374 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1375
Luiz Capitulino222f1802006-03-20 22:16:13 -08001376 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001377 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001378
1379 i += len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 sprintf(pg_result, "OK: src6=%s", buf);
1381 return count;
1382 }
1383 if (!strcmp(name, "src_min")) {
1384 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001385 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001386 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001387
Luiz Capitulino222f1802006-03-20 22:16:13 -08001388 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001390 buf[len] = 0;
1391 if (strcmp(buf, pkt_dev->src_min) != 0) {
1392 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1393 strncpy(pkt_dev->src_min, buf, len);
1394 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1395 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1396 }
1397 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001398 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001399 pkt_dev->src_min);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 i += len;
1401 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1402 return count;
1403 }
1404 if (!strcmp(name, "src_max")) {
1405 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001406 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001407 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001408
Luiz Capitulino222f1802006-03-20 22:16:13 -08001409 if (copy_from_user(buf, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410 return -EFAULT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001411 buf[len] = 0;
1412 if (strcmp(buf, pkt_dev->src_max) != 0) {
1413 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1414 strncpy(pkt_dev->src_max, buf, len);
1415 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1416 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1417 }
1418 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001419 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
Luiz Capitulino222f1802006-03-20 22:16:13 -08001420 pkt_dev->src_max);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 i += len;
1422 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1423 return count;
1424 }
1425 if (!strcmp(name, "dst_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001427 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001428 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001429
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001431 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001434 if (!mac_pton(valstr, pkt_dev->dst_mac))
1435 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001436 /* Set up Dest MAC */
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001437 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001438
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001439 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440 return count;
1441 }
1442 if (!strcmp(name, "src_mac")) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001444 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001445 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001446
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447 memset(valstr, 0, sizeof(valstr));
Luiz Capitulino222f1802006-03-20 22:16:13 -08001448 if (copy_from_user(valstr, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 return -EFAULT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001451 if (!mac_pton(valstr, pkt_dev->src_mac))
1452 return -EINVAL;
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001453 /* Set up Src MAC */
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001454 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
Adit Ranadivece5d0b42007-09-16 14:52:15 -07001455
Alexey Dobriyan4940fc82011-05-07 23:00:07 +00001456 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 return count;
1458 }
1459
Luiz Capitulino222f1802006-03-20 22:16:13 -08001460 if (!strcmp(name, "clear_counters")) {
1461 pktgen_clear_counters(pkt_dev);
1462 sprintf(pg_result, "OK: Clearing counters.\n");
1463 return count;
1464 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465
1466 if (!strcmp(name, "flows")) {
1467 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001468 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001469 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001470
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 i += len;
1472 if (value > MAX_CFLOWS)
1473 value = MAX_CFLOWS;
1474
1475 pkt_dev->cflows = value;
1476 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1477 return count;
1478 }
1479
1480 if (!strcmp(name, "flowlen")) {
1481 len = num_arg(&user_buffer[i], 10, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001482 if (len < 0)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001483 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001484
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 i += len;
1486 pkt_dev->lflow = value;
1487 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1488 return count;
1489 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001490
Robert Olsson45b270f2007-08-28 15:45:55 -07001491 if (!strcmp(name, "queue_map_min")) {
1492 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001493 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001494 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001495
Robert Olsson45b270f2007-08-28 15:45:55 -07001496 i += len;
1497 pkt_dev->queue_map_min = value;
1498 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1499 return count;
1500 }
1501
1502 if (!strcmp(name, "queue_map_max")) {
1503 len = num_arg(&user_buffer[i], 5, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001504 if (len < 0)
Robert Olsson45b270f2007-08-28 15:45:55 -07001505 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001506
Robert Olsson45b270f2007-08-28 15:45:55 -07001507 i += len;
1508 pkt_dev->queue_map_max = value;
1509 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1510 return count;
1511 }
1512
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001513 if (!strcmp(name, "mpls")) {
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001514 unsigned n, cnt;
1515
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001516 len = get_labels(&user_buffer[i], pkt_dev);
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001517 if (len < 0)
1518 return len;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001519 i += len;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001520 cnt = sprintf(pg_result, "OK: mpls=");
Stephen Hemmingere71a4782007-04-10 20:10:33 -07001521 for (n = 0; n < pkt_dev->nr_labels; n++)
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07001522 cnt += sprintf(pg_result + cnt,
1523 "%08x%s", ntohl(pkt_dev->labels[n]),
1524 n == pkt_dev->nr_labels-1 ? "" : ",");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001525
1526 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1527 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1528 pkt_dev->svlan_id = 0xffff;
1529
1530 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001531 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001532 }
1533 return count;
1534 }
1535
1536 if (!strcmp(name, "vlan_id")) {
1537 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001538 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001539 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001540
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001541 i += len;
1542 if (value <= 4095) {
1543 pkt_dev->vlan_id = value; /* turn on VLAN */
1544
1545 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001546 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001547
1548 if (debug && pkt_dev->nr_labels)
David S. Miller25a8b252007-07-30 16:11:48 -07001549 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001550
1551 pkt_dev->nr_labels = 0; /* turn off MPLS */
1552 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1553 } else {
1554 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1555 pkt_dev->svlan_id = 0xffff;
1556
1557 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001558 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001559 }
1560 return count;
1561 }
1562
1563 if (!strcmp(name, "vlan_p")) {
1564 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001565 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001566 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001567
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001568 i += len;
1569 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1570 pkt_dev->vlan_p = value;
1571 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1572 } else {
1573 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1574 }
1575 return count;
1576 }
1577
1578 if (!strcmp(name, "vlan_cfi")) {
1579 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001580 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001581 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001582
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001583 i += len;
1584 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1585 pkt_dev->vlan_cfi = value;
1586 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1587 } else {
1588 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1589 }
1590 return count;
1591 }
1592
1593 if (!strcmp(name, "svlan_id")) {
1594 len = num_arg(&user_buffer[i], 4, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001595 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001596 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001597
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001598 i += len;
1599 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1600 pkt_dev->svlan_id = value; /* turn on SVLAN */
1601
1602 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001603 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001604
1605 if (debug && pkt_dev->nr_labels)
David S. Miller25a8b252007-07-30 16:11:48 -07001606 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001607
1608 pkt_dev->nr_labels = 0; /* turn off MPLS */
1609 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1610 } else {
1611 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1612 pkt_dev->svlan_id = 0xffff;
1613
1614 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001615 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001616 }
1617 return count;
1618 }
1619
1620 if (!strcmp(name, "svlan_p")) {
1621 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001622 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001623 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001624
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001625 i += len;
1626 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1627 pkt_dev->svlan_p = value;
1628 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1629 } else {
1630 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1631 }
1632 return count;
1633 }
1634
1635 if (!strcmp(name, "svlan_cfi")) {
1636 len = num_arg(&user_buffer[i], 1, &value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001637 if (len < 0)
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001638 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001639
Francesco Fondelli34954dd2006-09-27 16:30:44 -07001640 i += len;
1641 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1642 pkt_dev->svlan_cfi = value;
1643 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1644 } else {
1645 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1646 }
Steven Whitehouseca6549a2006-03-23 01:10:26 -08001647 return count;
1648 }
1649
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001650 if (!strcmp(name, "tos")) {
1651 __u32 tmp_value = 0;
1652 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001653 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001654 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001655
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001656 i += len;
1657 if (len == 2) {
1658 pkt_dev->tos = tmp_value;
1659 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1660 } else {
1661 sprintf(pg_result, "ERROR: tos must be 00-ff");
1662 }
1663 return count;
1664 }
1665
1666 if (!strcmp(name, "traffic_class")) {
1667 __u32 tmp_value = 0;
1668 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001669 if (len < 0)
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001670 return len;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001671
Francesco Fondelli1ca77682006-09-27 16:32:03 -07001672 i += len;
1673 if (len == 2) {
1674 pkt_dev->traffic_class = tmp_value;
1675 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1676 } else {
1677 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1678 }
1679 return count;
1680 }
1681
John Fastabend9e50e3a2010-11-16 19:12:28 +00001682 if (!strcmp(name, "skb_priority")) {
1683 len = num_arg(&user_buffer[i], 9, &value);
1684 if (len < 0)
1685 return len;
1686
1687 i += len;
1688 pkt_dev->skb_priority = value;
1689 sprintf(pg_result, "OK: skb_priority=%i",
1690 pkt_dev->skb_priority);
1691 return count;
1692 }
1693
Linus Torvalds1da177e2005-04-16 15:20:36 -07001694 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1695 return -EINVAL;
1696}
1697
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001698static int pktgen_if_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699{
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001700 return single_open(file, pktgen_if_show, PDE(inode)->data);
1701}
1702
Arjan van de Ven9a321442007-02-12 00:55:35 -08001703static const struct file_operations pktgen_if_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001704 .owner = THIS_MODULE,
1705 .open = pktgen_if_open,
1706 .read = seq_read,
1707 .llseek = seq_lseek,
1708 .write = pktgen_if_write,
1709 .release = single_release,
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001710};
1711
1712static int pktgen_thread_show(struct seq_file *seq, void *v)
1713{
Luiz Capitulino222f1802006-03-20 22:16:13 -08001714 struct pktgen_thread *t = seq->private;
Stephen Hemminger648fda72009-08-27 13:55:07 +00001715 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001717 BUG_ON(!t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718
Luiz Capitulino222f1802006-03-20 22:16:13 -08001719 seq_printf(seq, "Running: ");
1720
1721 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08001722 list_for_each_entry(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001723 if (pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001724 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725
Luiz Capitulino222f1802006-03-20 22:16:13 -08001726 seq_printf(seq, "\nStopped: ");
1727
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08001728 list_for_each_entry(pkt_dev, &t->if_list, list)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001729 if (!pkt_dev->running)
Eric Dumazet593f63b2009-11-23 01:44:37 +00001730 seq_printf(seq, "%s ", pkt_dev->odevname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731
1732 if (t->result[0])
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001733 seq_printf(seq, "\nResult: %s\n", t->result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 else
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001735 seq_printf(seq, "\nResult: NA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736
Luiz Capitulino222f1802006-03-20 22:16:13 -08001737 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001739 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740}
1741
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001742static ssize_t pktgen_thread_write(struct file *file,
Luiz Capitulino222f1802006-03-20 22:16:13 -08001743 const char __user * user_buffer,
1744 size_t count, loff_t * offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745{
Joe Perches8a994a72010-07-12 10:50:23 +00001746 struct seq_file *seq = file->private_data;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001747 struct pktgen_thread *t = seq->private;
Paul Gortmakerd6182222010-10-18 12:14:44 +00001748 int i, max, len, ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749 char name[40];
Luiz Capitulino222f1802006-03-20 22:16:13 -08001750 char *pg_result;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001751
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752 if (count < 1) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001753 // sprintf(pg_result, "Wrong command format");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754 return -EINVAL;
1755 }
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001756
Paul Gortmakerd6182222010-10-18 12:14:44 +00001757 max = count;
1758 len = count_trail_chars(user_buffer, max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001759 if (len < 0)
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001760 return len;
1761
Paul Gortmakerd6182222010-10-18 12:14:44 +00001762 i = len;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001763
Linus Torvalds1da177e2005-04-16 15:20:36 -07001764 /* Read variable name */
1765
1766 len = strn_len(&user_buffer[i], sizeof(name) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001767 if (len < 0)
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001768 return len;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001769
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770 memset(name, 0, sizeof(name));
1771 if (copy_from_user(name, &user_buffer[i], len))
1772 return -EFAULT;
1773 i += len;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001774
Luiz Capitulino222f1802006-03-20 22:16:13 -08001775 max = count - i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001776 len = count_trail_chars(&user_buffer[i], max);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001777 if (len < 0)
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001778 return len;
1779
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780 i += len;
1781
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001782 if (debug)
David S. Miller25a8b252007-07-30 16:11:48 -07001783 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1784 name, (unsigned long)count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785
Luiz Capitulino222f1802006-03-20 22:16:13 -08001786 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001787 pr_err("ERROR: No thread\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 ret = -EINVAL;
1789 goto out;
1790 }
1791
1792 pg_result = &(t->result[0]);
1793
Luiz Capitulino222f1802006-03-20 22:16:13 -08001794 if (!strcmp(name, "add_device")) {
1795 char f[32];
1796 memset(f, 0, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797 len = strn_len(&user_buffer[i], sizeof(f) - 1);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001798 if (len < 0) {
1799 ret = len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 goto out;
1801 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001802 if (copy_from_user(f, &user_buffer[i], len))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 return -EFAULT;
1804 i += len;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001805 mutex_lock(&pktgen_thread_lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001806 pktgen_add_device(t, f);
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001807 mutex_unlock(&pktgen_thread_lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001808 ret = count;
1809 sprintf(pg_result, "OK: add_device=%s", f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810 goto out;
1811 }
1812
Luiz Capitulino222f1802006-03-20 22:16:13 -08001813 if (!strcmp(name, "rem_device_all")) {
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001814 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001815 t->control |= T_REMDEVALL;
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001816 mutex_unlock(&pktgen_thread_lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001817 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818 ret = count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001819 sprintf(pg_result, "OK: rem_device_all");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820 goto out;
1821 }
1822
Luiz Capitulino222f1802006-03-20 22:16:13 -08001823 if (!strcmp(name, "max_before_softirq")) {
Robert Olssonb1639112007-08-28 15:46:58 -07001824 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
Luiz Capitulino222f1802006-03-20 22:16:13 -08001825 ret = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826 goto out;
1827 }
1828
1829 ret = -EINVAL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001830out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001831 return ret;
1832}
1833
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001834static int pktgen_thread_open(struct inode *inode, struct file *file)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001835{
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001836 return single_open(file, pktgen_thread_show, PDE(inode)->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001837}
1838
Arjan van de Ven9a321442007-02-12 00:55:35 -08001839static const struct file_operations pktgen_thread_fops = {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001840 .owner = THIS_MODULE,
1841 .open = pktgen_thread_open,
1842 .read = seq_read,
1843 .llseek = seq_lseek,
1844 .write = pktgen_thread_write,
1845 .release = single_release,
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07001846};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001847
1848/* Think find or remove for NN */
Luiz Capitulino222f1802006-03-20 22:16:13 -08001849static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850{
1851 struct pktgen_thread *t;
1852 struct pktgen_dev *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08001853 bool exact = (remove == FIND);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08001855 list_for_each_entry(t, &pktgen_threads, th_list) {
Eric Dumazet3e984842009-11-24 14:50:53 -08001856 pkt_dev = pktgen_find_dev(t, ifname, exact);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857 if (pkt_dev) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08001858 if (remove) {
1859 if_lock(t);
1860 pkt_dev->removal_mark = 1;
1861 t->control |= T_REMDEV;
1862 if_unlock(t);
1863 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001864 break;
1865 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08001867 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868}
1869
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001870/*
1871 * mark a device for removal
1872 */
Stephen Hemminger39df2322007-03-04 16:11:51 -08001873static void pktgen_mark_device(const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874{
1875 struct pktgen_dev *pkt_dev = NULL;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001876 const int max_tries = 10, msec_per_try = 125;
1877 int i = 0;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001878
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001879 mutex_lock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001880 pr_debug("%s: marking %s for removal\n", __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001881
Luiz Capitulino222f1802006-03-20 22:16:13 -08001882 while (1) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001883
1884 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001885 if (pkt_dev == NULL)
1886 break; /* success */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001887
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001888 mutex_unlock(&pktgen_thread_lock);
Joe Perchesf9467ea2010-06-21 12:29:14 +00001889 pr_debug("%s: waiting for %s to disappear....\n",
1890 __func__, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001891 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001892 mutex_lock(&pktgen_thread_lock);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001893
1894 if (++i >= max_tries) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001895 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1896 __func__, msec_per_try * i, ifname);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001897 break;
1898 }
1899
1900 }
1901
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08001902 mutex_unlock(&pktgen_thread_lock);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001903}
Arthur Kepner95ed63f2006-03-20 21:26:56 -08001904
Stephen Hemminger39df2322007-03-04 16:11:51 -08001905static void pktgen_change_name(struct net_device *dev)
1906{
1907 struct pktgen_thread *t;
1908
1909 list_for_each_entry(t, &pktgen_threads, th_list) {
1910 struct pktgen_dev *pkt_dev;
1911
1912 list_for_each_entry(pkt_dev, &t->if_list, list) {
1913 if (pkt_dev->odev != dev)
1914 continue;
1915
1916 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1917
Alexey Dobriyan29753152009-08-28 23:34:43 -07001918 pkt_dev->entry = proc_create_data(dev->name, 0600,
1919 pg_proc_dir,
1920 &pktgen_if_fops,
1921 pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001922 if (!pkt_dev->entry)
Joe Perchesf9467ea2010-06-21 12:29:14 +00001923 pr_err("can't move proc entry for '%s'\n",
1924 dev->name);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001925 break;
1926 }
1927 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928}
1929
Luiz Capitulino222f1802006-03-20 22:16:13 -08001930static int pktgen_device_event(struct notifier_block *unused,
1931 unsigned long event, void *ptr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932{
Stephen Hemminger39df2322007-03-04 16:11:51 -08001933 struct net_device *dev = ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934
YOSHIFUJI Hideaki721499e2008-07-19 22:34:43 -07001935 if (!net_eq(dev_net(dev), &init_net))
Eric W. Biedermane9dc8652007-09-12 13:02:17 +02001936 return NOTIFY_DONE;
1937
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938 /* It is OK that we do not hold the group lock right now,
1939 * as we run under the RTNL lock.
1940 */
1941
1942 switch (event) {
Stephen Hemminger39df2322007-03-04 16:11:51 -08001943 case NETDEV_CHANGENAME:
1944 pktgen_change_name(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945 break;
Luiz Capitulino222f1802006-03-20 22:16:13 -08001946
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947 case NETDEV_UNREGISTER:
Luiz Capitulino222f1802006-03-20 22:16:13 -08001948 pktgen_mark_device(dev->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949 break;
Stephen Hemminger3ff50b72007-04-20 17:09:22 -07001950 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001951
1952 return NOTIFY_DONE;
1953}
1954
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001955static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1956 const char *ifname)
Robert Olssone6fce5b2008-08-07 02:23:01 -07001957{
1958 char b[IFNAMSIZ+5];
Paul Gortmakerd6182222010-10-18 12:14:44 +00001959 int i;
Robert Olssone6fce5b2008-08-07 02:23:01 -07001960
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00001961 for (i = 0; ifname[i] != '@'; i++) {
1962 if (i == IFNAMSIZ)
Robert Olssone6fce5b2008-08-07 02:23:01 -07001963 break;
1964
1965 b[i] = ifname[i];
1966 }
1967 b[i] = 0;
1968
1969 return dev_get_by_name(&init_net, b);
1970}
1971
1972
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973/* Associate pktgen_dev with a device. */
1974
Stephen Hemminger39df2322007-03-04 16:11:51 -08001975static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
Luiz Capitulino222f1802006-03-20 22:16:13 -08001976{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001977 struct net_device *odev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08001978 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001979
1980 /* Clean old setups */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 if (pkt_dev->odev) {
1982 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08001983 pkt_dev->odev = NULL;
1984 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985
Robert Olssone6fce5b2008-08-07 02:23:01 -07001986 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001987 if (!odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001988 pr_err("no such netdevice: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001989 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990 }
Stephen Hemminger39df2322007-03-04 16:11:51 -08001991
Linus Torvalds1da177e2005-04-16 15:20:36 -07001992 if (odev->type != ARPHRD_ETHER) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001993 pr_err("not an ethernet device: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001994 err = -EINVAL;
1995 } else if (!netif_running(odev)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00001996 pr_err("device is down: \"%s\"\n", ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08001997 err = -ENETDOWN;
1998 } else {
1999 pkt_dev->odev = odev;
2000 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002001 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002002
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003 dev_put(odev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08002004 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005}
2006
2007/* Read pkt_dev from the interface and set up internal pktgen_dev
2008 * structure to have the right information to create/send packets
2009 */
2010static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2011{
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002012 int ntxq;
2013
Luiz Capitulino222f1802006-03-20 22:16:13 -08002014 if (!pkt_dev->odev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002015 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08002016 sprintf(pkt_dev->result,
2017 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2018 return;
2019 }
2020
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002021 /* make sure that we don't pick a non-existing transmit queue */
2022 ntxq = pkt_dev->odev->real_num_tx_queues;
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002023
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002024 if (ntxq <= pkt_dev->queue_map_min) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002025 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2026 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2027 pkt_dev->odevname);
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002028 pkt_dev->queue_map_min = ntxq - 1;
2029 }
Jesse Brandeburg88271662008-10-28 13:21:51 -07002030 if (pkt_dev->queue_map_max >= ntxq) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002031 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2032 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2033 pkt_dev->odevname);
Andrew Gallatin64c00d82008-08-13 15:16:00 -07002034 pkt_dev->queue_map_max = ntxq - 1;
2035 }
2036
Luiz Capitulino222f1802006-03-20 22:16:13 -08002037 /* Default to the interface's mac if not explicitly set. */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038
Kris Katterjohnf404e9a2006-01-17 13:04:57 -08002039 if (is_zero_ether_addr(pkt_dev->src_mac))
Luiz Capitulino222f1802006-03-20 22:16:13 -08002040 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041
Luiz Capitulino222f1802006-03-20 22:16:13 -08002042 /* Set up Dest MAC */
Kris Katterjohnf404e9a2006-01-17 13:04:57 -08002043 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044
Luiz Capitulino222f1802006-03-20 22:16:13 -08002045 /* Set up pkt size */
2046 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2047
2048 if (pkt_dev->flags & F_IPV6) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002049 /*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09002050 * Skip this automatic address setting until locks or functions
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051 * gets exported
2052 */
2053
2054#ifdef NOTNOW
Luiz Capitulino222f1802006-03-20 22:16:13 -08002055 int i, set = 0, err = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056 struct inet6_dev *idev;
2057
Luiz Capitulino222f1802006-03-20 22:16:13 -08002058 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2059 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060 set = 1;
2061 break;
2062 }
2063
Luiz Capitulino222f1802006-03-20 22:16:13 -08002064 if (!set) {
2065
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066 /*
2067 * Use linklevel address if unconfigured.
2068 *
2069 * use ipv6_get_lladdr if/when it's get exported
2070 */
2071
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002072 rcu_read_lock();
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002073 idev = __in6_dev_get(pkt_dev->odev);
2074 if (idev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 struct inet6_ifaddr *ifp;
2076
2077 read_lock_bh(&idev->lock);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002078 for (ifp = idev->addr_list; ifp;
2079 ifp = ifp->if_next) {
Joe Perchesf64f9e72009-11-29 16:55:45 -08002080 if (ifp->scope == IFA_LINK &&
2081 !(ifp->flags & IFA_F_TENTATIVE)) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002082 ipv6_addr_copy(&pkt_dev->
2083 cur_in6_saddr,
2084 &ifp->addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 err = 0;
2086 break;
2087 }
2088 }
2089 read_unlock_bh(&idev->lock);
2090 }
YOSHIFUJI Hideaki8814c4b2006-09-22 14:44:24 -07002091 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002092 if (err)
Joe Perchesf9467ea2010-06-21 12:29:14 +00002093 pr_err("ERROR: IPv6 link address not available\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002094 }
2095#endif
Luiz Capitulino222f1802006-03-20 22:16:13 -08002096 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 pkt_dev->saddr_min = 0;
2098 pkt_dev->saddr_max = 0;
2099 if (strlen(pkt_dev->src_min) == 0) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002100
2101 struct in_device *in_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
2103 rcu_read_lock();
Herbert Xue5ed6392005-10-03 14:35:55 -07002104 in_dev = __in_dev_get_rcu(pkt_dev->odev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 if (in_dev) {
2106 if (in_dev->ifa_list) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002107 pkt_dev->saddr_min =
2108 in_dev->ifa_list->ifa_address;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109 pkt_dev->saddr_max = pkt_dev->saddr_min;
2110 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111 }
2112 rcu_read_unlock();
Luiz Capitulino222f1802006-03-20 22:16:13 -08002113 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002114 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2115 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2116 }
2117
2118 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2119 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2120 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002121 /* Initialize current values. */
2122 pkt_dev->cur_dst_mac_offset = 0;
2123 pkt_dev->cur_src_mac_offset = 0;
2124 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2125 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2126 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2127 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128 pkt_dev->nflows = 0;
2129}
2130
Linus Torvalds1da177e2005-04-16 15:20:36 -07002131
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002132static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2133{
Stephen Hemmingeref879792009-09-22 19:41:43 +00002134 ktime_t start_time, end_time;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002135 s64 remaining;
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002136 struct hrtimer_sleeper t;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002137
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002138 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2139 hrtimer_set_expires(&t.timer, spin_until);
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00002140
Daniel Turull43d28b62010-06-09 22:49:57 +00002141 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002142 if (remaining <= 0) {
2143 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002144 return;
Eric Dumazet417bc4b2009-10-01 09:29:45 -07002145 }
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002146
Stephen Hemmingeref879792009-09-22 19:41:43 +00002147 start_time = ktime_now();
Eric Dumazet33136d12011-10-20 17:00:21 -04002148 if (remaining < 100000) {
2149 /* for small delays (<100us), just loop until limit is reached */
2150 do {
2151 end_time = ktime_now();
2152 } while (ktime_lt(end_time, spin_until));
2153 } else {
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002154 /* see do_nanosleep */
2155 hrtimer_init_sleeper(&t, current);
2156 do {
2157 set_current_state(TASK_INTERRUPTIBLE);
2158 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2159 if (!hrtimer_active(&t.timer))
2160 t.task = NULL;
2161
2162 if (likely(t.task))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163 schedule();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002164
Stephen Hemminger2bc481c2009-08-28 23:41:29 -07002165 hrtimer_cancel(&t.timer);
2166 } while (t.task && pkt_dev->running && !signal_pending(current));
2167 __set_current_state(TASK_RUNNING);
Eric Dumazet33136d12011-10-20 17:00:21 -04002168 end_time = ktime_now();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169 }
Stephen Hemmingeref879792009-09-22 19:41:43 +00002170
2171 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
Daniel Turull07a0f0f2010-06-10 23:08:11 -07002172 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173}
2174
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002175static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2176{
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002177 pkt_dev->pkt_overhead = 0;
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002178 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2179 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2180 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2181}
2182
Stephen Hemminger648fda72009-08-27 13:55:07 +00002183static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002184{
Stephen Hemminger648fda72009-08-27 13:55:07 +00002185 return !!(pkt_dev->flows[flow].flags & F_INIT);
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002186}
2187
2188static inline int f_pick(struct pktgen_dev *pkt_dev)
2189{
2190 int flow = pkt_dev->curfl;
2191
2192 if (pkt_dev->flags & F_FLOW_SEQ) {
2193 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2194 /* reset time */
2195 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002196 pkt_dev->flows[flow].flags = 0;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002197 pkt_dev->curfl += 1;
2198 if (pkt_dev->curfl >= pkt_dev->cflows)
2199 pkt_dev->curfl = 0; /*reset */
2200 }
2201 } else {
2202 flow = random32() % pkt_dev->cflows;
Robert Olsson1211a642008-08-05 18:44:26 -07002203 pkt_dev->curfl = flow;
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002204
Robert Olsson1211a642008-08-05 18:44:26 -07002205 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002206 pkt_dev->flows[flow].count = 0;
Robert Olsson1211a642008-08-05 18:44:26 -07002207 pkt_dev->flows[flow].flags = 0;
2208 }
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002209 }
2210
2211 return pkt_dev->curfl;
2212}
2213
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002214
2215#ifdef CONFIG_XFRM
2216/* If there was already an IPSEC SA, we keep it as is, else
2217 * we go look for it ...
2218*/
Jamal Hadi Salimbd557752010-02-22 16:20:22 -08002219#define DUMMY_MARK 0
Adrian Bunkfea1ab02007-07-30 18:04:09 -07002220static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002221{
2222 struct xfrm_state *x = pkt_dev->flows[flow].x;
2223 if (!x) {
2224 /*slow path: we dont already have xfrm_state*/
Jamal Hadi Salimbd557752010-02-22 16:20:22 -08002225 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
Alexey Dobriyan5447c5e2008-11-25 17:31:51 -08002226 (xfrm_address_t *)&pkt_dev->cur_daddr,
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002227 (xfrm_address_t *)&pkt_dev->cur_saddr,
2228 AF_INET,
2229 pkt_dev->ipsmode,
2230 pkt_dev->ipsproto, 0);
2231 if (x) {
2232 pkt_dev->flows[flow].x = x;
2233 set_pkt_overhead(pkt_dev);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002234 pkt_dev->pkt_overhead += x->props.header_len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002235 }
2236
2237 }
2238}
2239#endif
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002240static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2241{
Robert Olssone6fce5b2008-08-07 02:23:01 -07002242
2243 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2244 pkt_dev->cur_queue_map = smp_processor_id();
2245
Eric Dumazet896a7cf2009-10-02 20:24:59 +00002246 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002247 __u16 t;
2248 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2249 t = random32() %
2250 (pkt_dev->queue_map_max -
2251 pkt_dev->queue_map_min + 1)
2252 + pkt_dev->queue_map_min;
2253 } else {
2254 t = pkt_dev->cur_queue_map + 1;
2255 if (t > pkt_dev->queue_map_max)
2256 t = pkt_dev->queue_map_min;
2257 }
2258 pkt_dev->cur_queue_map = t;
2259 }
Robert Olssonbfdbc0a2008-11-19 14:09:47 -08002260 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 -07002261}
2262
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263/* Increment/randomize headers according to flags and current values
2264 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2265 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002266static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2267{
2268 __u32 imn;
2269 __u32 imx;
2270 int flow = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002271
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002272 if (pkt_dev->cflows)
2273 flow = f_pick(pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002274
2275 /* Deal with source MAC */
Luiz Capitulino222f1802006-03-20 22:16:13 -08002276 if (pkt_dev->src_mac_count > 1) {
2277 __u32 mc;
2278 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002279
Luiz Capitulino222f1802006-03-20 22:16:13 -08002280 if (pkt_dev->flags & F_MACSRC_RND)
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002281 mc = random32() % pkt_dev->src_mac_count;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002282 else {
2283 mc = pkt_dev->cur_src_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002284 if (pkt_dev->cur_src_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002285 pkt_dev->src_mac_count)
2286 pkt_dev->cur_src_mac_offset = 0;
2287 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288
Luiz Capitulino222f1802006-03-20 22:16:13 -08002289 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2290 pkt_dev->hh[11] = tmp;
2291 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2292 pkt_dev->hh[10] = tmp;
2293 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2294 pkt_dev->hh[9] = tmp;
2295 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2296 pkt_dev->hh[8] = tmp;
2297 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2298 pkt_dev->hh[7] = tmp;
2299 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300
Luiz Capitulino222f1802006-03-20 22:16:13 -08002301 /* Deal with Destination MAC */
2302 if (pkt_dev->dst_mac_count > 1) {
2303 __u32 mc;
2304 __u32 tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002305
Luiz Capitulino222f1802006-03-20 22:16:13 -08002306 if (pkt_dev->flags & F_MACDST_RND)
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002307 mc = random32() % pkt_dev->dst_mac_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002308
Luiz Capitulino222f1802006-03-20 22:16:13 -08002309 else {
2310 mc = pkt_dev->cur_dst_mac_offset++;
Robert Olssonff2a79a2008-08-05 18:45:05 -07002311 if (pkt_dev->cur_dst_mac_offset >=
Luiz Capitulino222f1802006-03-20 22:16:13 -08002312 pkt_dev->dst_mac_count) {
2313 pkt_dev->cur_dst_mac_offset = 0;
2314 }
2315 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316
Luiz Capitulino222f1802006-03-20 22:16:13 -08002317 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2318 pkt_dev->hh[5] = tmp;
2319 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2320 pkt_dev->hh[4] = tmp;
2321 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2322 pkt_dev->hh[3] = tmp;
2323 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2324 pkt_dev->hh[2] = tmp;
2325 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2326 pkt_dev->hh[1] = tmp;
2327 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002329 if (pkt_dev->flags & F_MPLS_RND) {
2330 unsigned i;
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002331 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002332 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2333 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002334 ((__force __be32)random32() &
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002335 htonl(0x000fffff));
2336 }
2337
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002338 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002339 pkt_dev->vlan_id = random32() & (4096-1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002340 }
2341
2342 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002343 pkt_dev->svlan_id = random32() & (4096 - 1);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002344 }
2345
Luiz Capitulino222f1802006-03-20 22:16:13 -08002346 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2347 if (pkt_dev->flags & F_UDPSRC_RND)
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002348 pkt_dev->cur_udp_src = random32() %
2349 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2350 + pkt_dev->udp_src_min;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002351
Luiz Capitulino222f1802006-03-20 22:16:13 -08002352 else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002353 pkt_dev->cur_udp_src++;
2354 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2355 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002356 }
2357 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358
Luiz Capitulino222f1802006-03-20 22:16:13 -08002359 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2360 if (pkt_dev->flags & F_UDPDST_RND) {
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002361 pkt_dev->cur_udp_dst = random32() %
2362 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2363 + pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002364 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002365 pkt_dev->cur_udp_dst++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002366 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002368 }
2369 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370
2371 if (!(pkt_dev->flags & F_IPV6)) {
2372
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002373 imn = ntohl(pkt_dev->saddr_min);
2374 imx = ntohl(pkt_dev->saddr_max);
2375 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376 __u32 t;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002377 if (pkt_dev->flags & F_IPSRC_RND)
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002378 t = random32() % (imx - imn) + imn;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379 else {
2380 t = ntohl(pkt_dev->cur_saddr);
2381 t++;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002382 if (t > imx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002383 t = imn;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002384
Linus Torvalds1da177e2005-04-16 15:20:36 -07002385 }
2386 pkt_dev->cur_saddr = htonl(t);
2387 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002388
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002389 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002390 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2391 } else {
Al Viro252e3342006-11-14 20:48:11 -08002392 imn = ntohl(pkt_dev->daddr_min);
2393 imx = ntohl(pkt_dev->daddr_max);
2394 if (imn < imx) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002395 __u32 t;
Al Viro252e3342006-11-14 20:48:11 -08002396 __be32 s;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002397 if (pkt_dev->flags & F_IPDST_RND) {
2398
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002399 t = random32() % (imx - imn) + imn;
Al Viro252e3342006-11-14 20:48:11 -08002400 s = htonl(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401
Joe Perches21cf2252007-12-16 13:44:00 -08002402 while (ipv4_is_loopback(s) ||
2403 ipv4_is_multicast(s) ||
Jan Engelhardt1e637c72008-01-21 03:18:08 -08002404 ipv4_is_lbcast(s) ||
Joe Perches21cf2252007-12-16 13:44:00 -08002405 ipv4_is_zeronet(s) ||
2406 ipv4_is_local_multicast(s)) {
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002407 t = random32() % (imx - imn) + imn;
Al Viro252e3342006-11-14 20:48:11 -08002408 s = htonl(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002409 }
Al Viro252e3342006-11-14 20:48:11 -08002410 pkt_dev->cur_daddr = s;
2411 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412 t = ntohl(pkt_dev->cur_daddr);
2413 t++;
2414 if (t > imx) {
2415 t = imn;
2416 }
2417 pkt_dev->cur_daddr = htonl(t);
2418 }
2419 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002420 if (pkt_dev->cflows) {
Jamal Hadi Salim007a5312007-07-02 22:40:36 -07002421 pkt_dev->flows[flow].flags |= F_INIT;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002422 pkt_dev->flows[flow].cur_daddr =
2423 pkt_dev->cur_daddr;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002424#ifdef CONFIG_XFRM
2425 if (pkt_dev->flags & F_IPSEC_ON)
2426 get_ipsec_sa(pkt_dev, flow);
2427#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002428 pkt_dev->nflows++;
2429 }
2430 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002431 } else { /* IPV6 * */
2432
2433 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2434 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2435 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2436 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002437 else {
2438 int i;
2439
2440 /* Only random destinations yet */
2441
Luiz Capitulino222f1802006-03-20 22:16:13 -08002442 for (i = 0; i < 4; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002443 pkt_dev->cur_in6_daddr.s6_addr32[i] =
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002444 (((__force __be32)random32() |
Luiz Capitulino222f1802006-03-20 22:16:13 -08002445 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2446 pkt_dev->max_in6_daddr.s6_addr32[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002448 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002449 }
2450
Luiz Capitulino222f1802006-03-20 22:16:13 -08002451 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2452 __u32 t;
2453 if (pkt_dev->flags & F_TXSIZE_RND) {
Stephen Hemminger5fa6fc72007-03-04 16:07:28 -08002454 t = random32() %
2455 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2456 + pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002457 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002458 t = pkt_dev->cur_pkt_size + 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002459 if (t > pkt_dev->max_pkt_size)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460 t = pkt_dev->min_pkt_size;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002461 }
2462 pkt_dev->cur_pkt_size = t;
2463 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002464
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002465 set_cur_queue_map(pkt_dev);
Robert Olsson45b270f2007-08-28 15:45:55 -07002466
Linus Torvalds1da177e2005-04-16 15:20:36 -07002467 pkt_dev->flows[flow].count++;
2468}
2469
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002470
2471#ifdef CONFIG_XFRM
2472static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2473{
2474 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2475 int err = 0;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002476
2477 if (!x)
2478 return 0;
2479 /* XXX: we dont support tunnel mode for now until
2480 * we resolve the dst issue */
2481 if (x->props.mode != XFRM_MODE_TRANSPORT)
2482 return 0;
2483
2484 spin_lock(&x->lock);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002485
Herbert Xu13996372007-10-17 21:35:51 -07002486 err = x->outer_mode->output(x, skb);
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002487 if (err)
2488 goto error;
2489 err = x->type->output(x, skb);
2490 if (err)
2491 goto error;
2492
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002493 x->curlft.bytes += skb->len;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002494 x->curlft.packets++;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002495error:
2496 spin_unlock(&x->lock);
2497 return err;
2498}
2499
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002500static void free_SAs(struct pktgen_dev *pkt_dev)
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002501{
2502 if (pkt_dev->cflows) {
2503 /* let go of the SAs if we have them */
Paul Gortmakerd6182222010-10-18 12:14:44 +00002504 int i;
2505 for (i = 0; i < pkt_dev->cflows; i++) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002506 struct xfrm_state *x = pkt_dev->flows[i].x;
2507 if (x) {
2508 xfrm_state_put(x);
2509 pkt_dev->flows[i].x = NULL;
2510 }
2511 }
2512 }
2513}
2514
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002515static int process_ipsec(struct pktgen_dev *pkt_dev,
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002516 struct sk_buff *skb, __be16 protocol)
2517{
2518 if (pkt_dev->flags & F_IPSEC_ON) {
2519 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2520 int nhead = 0;
2521 if (x) {
2522 int ret;
2523 __u8 *eth;
2524 nhead = x->props.header_len - skb_headroom(skb);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002525 if (nhead > 0) {
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002526 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2527 if (ret < 0) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002528 pr_err("Error expanding ipsec packet %d\n",
2529 ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002530 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002531 }
2532 }
2533
2534 /* ipsec is not expecting ll header */
2535 skb_pull(skb, ETH_HLEN);
2536 ret = pktgen_output_ipsec(skb, pkt_dev);
2537 if (ret) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00002538 pr_err("Error creating ipsec packet %d\n", ret);
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002539 goto err;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002540 }
2541 /* restore ll */
2542 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2543 memcpy(eth, pkt_dev->hh, 12);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002544 *(u16 *) &eth[12] = protocol;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002545 }
2546 }
2547 return 1;
Ilpo Järvinenb4bb4ac2008-10-13 18:43:59 -07002548err:
2549 kfree_skb(skb);
2550 return 0;
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002551}
2552#endif
2553
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002554static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2555{
2556 unsigned i;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002557 for (i = 0; i < pkt_dev->nr_labels; i++)
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002558 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002559
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002560 mpls--;
2561 *mpls |= MPLS_STACK_BOTTOM;
2562}
2563
Al Viro0f37c602006-11-03 03:49:56 -08002564static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2565 unsigned int prio)
2566{
2567 return htons(id | (cfi << 12) | (prio << 13));
2568}
2569
Eric Dumazet26ad7872011-01-25 13:26:05 -08002570static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2571 int datalen)
2572{
2573 struct timeval timestamp;
2574 struct pktgen_hdr *pgh;
2575
2576 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2577 datalen -= sizeof(*pgh);
2578
2579 if (pkt_dev->nfrags <= 0) {
Daniel Turull05aebe22011-03-14 13:47:40 -07002580 memset(skb_put(skb, datalen), 0, datalen);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002581 } else {
2582 int frags = pkt_dev->nfrags;
2583 int i, len;
amit salecha7d36a992011-04-22 16:22:20 +00002584 int frag_len;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002585
2586
2587 if (frags > MAX_SKB_FRAGS)
2588 frags = MAX_SKB_FRAGS;
2589 len = datalen - frags * PAGE_SIZE;
2590 if (len > 0) {
2591 memset(skb_put(skb, len), 0, len);
2592 datalen = frags * PAGE_SIZE;
2593 }
2594
2595 i = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002596 frag_len = (datalen/frags) < PAGE_SIZE ?
2597 (datalen/frags) : PAGE_SIZE;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002598 while (datalen > 0) {
2599 if (unlikely(!pkt_dev->page)) {
2600 int node = numa_node_id();
2601
2602 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2603 node = pkt_dev->node;
2604 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2605 if (!pkt_dev->page)
2606 break;
2607 }
Ian Campbella0bec1c2011-10-18 22:55:11 +00002608 get_page(pkt_dev->page);
Ian Campbellea2ab692011-08-22 23:44:58 +00002609 skb_frag_set_page(skb, i, pkt_dev->page);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002610 skb_shinfo(skb)->frags[i].page_offset = 0;
amit salecha7d36a992011-04-22 16:22:20 +00002611 /*last fragment, fill rest of data*/
2612 if (i == (frags - 1))
Eric Dumazet9e903e02011-10-18 21:00:24 +00002613 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2614 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
amit salecha7d36a992011-04-22 16:22:20 +00002615 else
Eric Dumazet9e903e02011-10-18 21:00:24 +00002616 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2617 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2618 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2619 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
Eric Dumazet26ad7872011-01-25 13:26:05 -08002620 i++;
2621 skb_shinfo(skb)->nr_frags = i;
2622 }
Eric Dumazet26ad7872011-01-25 13:26:05 -08002623 }
2624
2625 /* Stamp the time, and sequence number,
2626 * convert them to network byte order
2627 */
2628 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2629 pgh->seq_num = htonl(pkt_dev->seq_num);
2630
2631 do_gettimeofday(&timestamp);
2632 pgh->tv_sec = htonl(timestamp.tv_sec);
2633 pgh->tv_usec = htonl(timestamp.tv_usec);
2634}
2635
Luiz Capitulino222f1802006-03-20 22:16:13 -08002636static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2637 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002638{
2639 struct sk_buff *skb = NULL;
2640 __u8 *eth;
2641 struct udphdr *udph;
2642 int datalen, iplen;
2643 struct iphdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002644 __be16 protocol = htons(ETH_P_IP);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002645 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002646 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2647 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2648 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2649 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002650 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002651
2652 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002653 protocol = htons(ETH_P_MPLS_UC);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002654
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002655 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002656 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002657
Robert Olsson64053be2005-06-26 15:27:10 -07002658 /* Update any of the values, used when we're incrementing various
2659 * fields.
2660 */
2661 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002662 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002663
David S. Miller7ac54592006-01-18 14:19:10 -08002664 datalen = (odev->hard_header_len + 16) & ~0xf;
Robert Olssone99b99b2010-03-18 22:44:30 +00002665
2666 if (pkt_dev->flags & F_NODE) {
2667 int node;
2668
2669 if (pkt_dev->node >= 0)
2670 node = pkt_dev->node;
2671 else
2672 node = numa_node_id();
2673
2674 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2675 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2676 if (likely(skb)) {
2677 skb_reserve(skb, NET_SKB_PAD);
2678 skb->dev = odev;
2679 }
2680 }
2681 else
2682 skb = __netdev_alloc_skb(odev,
2683 pkt_dev->cur_pkt_size + 64
2684 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2685
Linus Torvalds1da177e2005-04-16 15:20:36 -07002686 if (!skb) {
2687 sprintf(pkt_dev->result, "No memory");
2688 return NULL;
2689 }
Junchang Wanga8d764b2010-12-08 16:55:16 +00002690 prefetchw(skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002691
David S. Miller7ac54592006-01-18 14:19:10 -08002692 skb_reserve(skb, datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002693
2694 /* Reserve for ethernet and IP header */
2695 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002696 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2697 if (pkt_dev->nr_labels)
2698 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002699
2700 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002701 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002702 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002703 *svlan_tci = build_tci(pkt_dev->svlan_id,
2704 pkt_dev->svlan_cfi,
2705 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002706 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002707 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002708 }
2709 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002710 *vlan_tci = build_tci(pkt_dev->vlan_id,
2711 pkt_dev->vlan_cfi,
2712 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002713 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002714 *vlan_encapsulated_proto = htons(ETH_P_IP);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002715 }
2716
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -07002717 skb->network_header = skb->tail;
Arnaldo Carvalho de Melob0e380b2007-04-10 21:21:55 -07002718 skb->transport_header = skb->network_header + sizeof(struct iphdr);
Arnaldo Carvalho de Meloddc7b8e2007-03-15 21:42:27 -03002719 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002720 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002721 skb->priority = pkt_dev->skb_priority;
2722
Arnaldo Carvalho de Meloddc7b8e2007-03-15 21:42:27 -03002723 iph = ip_hdr(skb);
2724 udph = udp_hdr(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002725
Linus Torvalds1da177e2005-04-16 15:20:36 -07002726 memcpy(eth, pkt_dev->hh, 12);
Al Viro252e3342006-11-14 20:48:11 -08002727 *(__be16 *) & eth[12] = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002728
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002729 /* Eth + IPh + UDPh + mpls */
2730 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002731 pkt_dev->pkt_overhead;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002732 if (datalen < sizeof(struct pktgen_hdr))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002733 datalen = sizeof(struct pktgen_hdr);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002734
Linus Torvalds1da177e2005-04-16 15:20:36 -07002735 udph->source = htons(pkt_dev->cur_udp_src);
2736 udph->dest = htons(pkt_dev->cur_udp_dst);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002737 udph->len = htons(datalen + 8); /* DATA + udphdr */
2738 udph->check = 0; /* No checksum */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002739
2740 iph->ihl = 5;
2741 iph->version = 4;
2742 iph->ttl = 32;
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002743 iph->tos = pkt_dev->tos;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002744 iph->protocol = IPPROTO_UDP; /* UDP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002745 iph->saddr = pkt_dev->cur_saddr;
2746 iph->daddr = pkt_dev->cur_daddr;
Eric Dumazet66ed1e52009-10-24 06:55:20 -07002747 iph->id = htons(pkt_dev->ip_id);
2748 pkt_dev->ip_id++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002749 iph->frag_off = 0;
2750 iplen = 20 + 8 + datalen;
2751 iph->tot_len = htons(iplen);
2752 iph->check = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002753 iph->check = ip_fast_csum((void *)iph, iph->ihl);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002754 skb->protocol = protocol;
Arnaldo Carvalho de Melob0e380b2007-04-10 21:21:55 -07002755 skb->mac_header = (skb->network_header - ETH_HLEN -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002756 pkt_dev->pkt_overhead);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002757 skb->dev = odev;
2758 skb->pkt_type = PACKET_HOST;
Eric Dumazet26ad7872011-01-25 13:26:05 -08002759 pktgen_finalize_skb(pkt_dev, skb, datalen);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002760
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07002761#ifdef CONFIG_XFRM
2762 if (!process_ipsec(pkt_dev, skb, protocol))
2763 return NULL;
2764#endif
2765
Linus Torvalds1da177e2005-04-16 15:20:36 -07002766 return skb;
2767}
2768
2769/*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09002770 * scan_ip6, fmt_ip taken from dietlibc-0.21
Linus Torvalds1da177e2005-04-16 15:20:36 -07002771 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2772 *
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09002773 * Slightly modified for kernel.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002774 * Should be candidate for net/ipv4/utils.c
2775 * --ro
2776 */
2777
Luiz Capitulino222f1802006-03-20 22:16:13 -08002778static unsigned int scan_ip6(const char *s, char ip[16])
Linus Torvalds1da177e2005-04-16 15:20:36 -07002779{
2780 unsigned int i;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002781 unsigned int len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002782 unsigned long u;
2783 char suffix[16];
Luiz Capitulino222f1802006-03-20 22:16:13 -08002784 unsigned int prefixlen = 0;
2785 unsigned int suffixlen = 0;
Al Viro252e3342006-11-14 20:48:11 -08002786 __be32 tmp;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07002787 char *pos;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002788
Luiz Capitulino222f1802006-03-20 22:16:13 -08002789 for (i = 0; i < 16; i++)
2790 ip[i] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002791
2792 for (;;) {
2793 if (*s == ':') {
2794 len++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002795 if (s[1] == ':') { /* Found "::", skip to part 2 */
2796 s += 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797 len++;
2798 break;
2799 }
2800 s++;
2801 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002802
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07002803 u = simple_strtoul(s, &pos, 16);
2804 i = pos - s;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002805 if (!i)
2806 return 0;
2807 if (prefixlen == 12 && s[i] == '.') {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002808
2809 /* the last 4 bytes may be written as IPv4 address */
2810
2811 tmp = in_aton(s);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002812 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2813 return i + len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002814 }
2815 ip[prefixlen++] = (u >> 8);
2816 ip[prefixlen++] = (u & 255);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002817 s += i;
2818 len += i;
2819 if (prefixlen == 16)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002820 return len;
2821 }
2822
2823/* part 2, after "::" */
2824 for (;;) {
2825 if (*s == ':') {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002826 if (suffixlen == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002827 break;
2828 s++;
2829 len++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002830 } else if (suffixlen != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002831 break;
Stephen Hemmingercfcabdc2007-10-09 01:59:42 -07002832
2833 u = simple_strtol(s, &pos, 16);
2834 i = pos - s;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002835 if (!i) {
Luiz Capitulino222f1802006-03-20 22:16:13 -08002836 if (*s)
2837 len--;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002838 break;
2839 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002840 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 tmp = in_aton(s);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002842 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2843 sizeof(tmp));
2844 suffixlen += 4;
2845 len += strlen(s);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846 break;
2847 }
2848 suffix[suffixlen++] = (u >> 8);
2849 suffix[suffixlen++] = (u & 255);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002850 s += i;
2851 len += i;
2852 if (prefixlen + suffixlen == 16)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002853 break;
2854 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08002855 for (i = 0; i < suffixlen; i++)
2856 ip[16 - suffixlen + i] = suffix[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002857 return len;
2858}
2859
Luiz Capitulino222f1802006-03-20 22:16:13 -08002860static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2861 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002862{
2863 struct sk_buff *skb = NULL;
2864 __u8 *eth;
2865 struct udphdr *udph;
2866 int datalen;
2867 struct ipv6hdr *iph;
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002868 __be16 protocol = htons(ETH_P_IPV6);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002869 __be32 *mpls;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002870 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2871 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2872 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2873 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002874 u16 queue_map;
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002875
2876 if (pkt_dev->nr_labels)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002877 protocol = htons(ETH_P_MPLS_UC);
Robert Olsson64053be2005-06-26 15:27:10 -07002878
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002879 if (pkt_dev->vlan_id != 0xffff)
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002880 protocol = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002881
Robert Olsson64053be2005-06-26 15:27:10 -07002882 /* Update any of the values, used when we're incrementing various
2883 * fields.
2884 */
2885 mod_cur_headers(pkt_dev);
Junchang Wangeb589062010-11-07 23:19:43 +00002886 queue_map = pkt_dev->cur_queue_map;
Robert Olsson64053be2005-06-26 15:27:10 -07002887
Stephen Hemmingere4707572009-08-27 13:55:13 +00002888 skb = __netdev_alloc_skb(odev,
2889 pkt_dev->cur_pkt_size + 64
2890 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002891 if (!skb) {
2892 sprintf(pkt_dev->result, "No memory");
2893 return NULL;
2894 }
Junchang Wanga8d764b2010-12-08 16:55:16 +00002895 prefetchw(skb->data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002896
2897 skb_reserve(skb, 16);
2898
2899 /* Reserve for ethernet and IP header */
2900 eth = (__u8 *) skb_push(skb, 14);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002901 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2902 if (pkt_dev->nr_labels)
2903 mpls_push(mpls, pkt_dev);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002904
2905 if (pkt_dev->vlan_id != 0xffff) {
Stephen Hemmingere71a4782007-04-10 20:10:33 -07002906 if (pkt_dev->svlan_id != 0xffff) {
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002907 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002908 *svlan_tci = build_tci(pkt_dev->svlan_id,
2909 pkt_dev->svlan_cfi,
2910 pkt_dev->svlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002911 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002912 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002913 }
2914 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
Al Viro0f37c602006-11-03 03:49:56 -08002915 *vlan_tci = build_tci(pkt_dev->vlan_id,
2916 pkt_dev->vlan_cfi,
2917 pkt_dev->vlan_p);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002918 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002919 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
Francesco Fondelli34954dd2006-09-27 16:30:44 -07002920 }
2921
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -07002922 skb->network_header = skb->tail;
Arnaldo Carvalho de Melob0e380b2007-04-10 21:21:55 -07002923 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
Arnaldo Carvalho de Meloddc7b8e2007-03-15 21:42:27 -03002924 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
David S. Millerfd2ea0a2008-07-17 01:56:23 -07002925 skb_set_queue_mapping(skb, queue_map);
John Fastabend9e50e3a2010-11-16 19:12:28 +00002926 skb->priority = pkt_dev->skb_priority;
Arnaldo Carvalho de Meloddc7b8e2007-03-15 21:42:27 -03002927 iph = ipv6_hdr(skb);
2928 udph = udp_hdr(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002929
Linus Torvalds1da177e2005-04-16 15:20:36 -07002930 memcpy(eth, pkt_dev->hh, 12);
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00002931 *(__be16 *) &eth[12] = protocol;
Robert Olsson64053be2005-06-26 15:27:10 -07002932
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002933 /* Eth + IPh + UDPh + mpls */
2934 datalen = pkt_dev->cur_pkt_size - 14 -
2935 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002936 pkt_dev->pkt_overhead;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002937
Luiz Capitulino222f1802006-03-20 22:16:13 -08002938 if (datalen < sizeof(struct pktgen_hdr)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002939 datalen = sizeof(struct pktgen_hdr);
2940 if (net_ratelimit())
Joe Perchesf9467ea2010-06-21 12:29:14 +00002941 pr_info("increased datalen to %d\n", datalen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002942 }
2943
2944 udph->source = htons(pkt_dev->cur_udp_src);
2945 udph->dest = htons(pkt_dev->cur_udp_dst);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002946 udph->len = htons(datalen + sizeof(struct udphdr));
2947 udph->check = 0; /* No checksum */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002948
Stephen Hemmingerd5f1ce92007-03-04 16:08:08 -08002949 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002950
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002951 if (pkt_dev->traffic_class) {
2952 /* Version + traffic class + flow (0) */
Al Viro252e3342006-11-14 20:48:11 -08002953 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
Francesco Fondelli1ca77682006-09-27 16:32:03 -07002954 }
2955
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956 iph->hop_limit = 32;
2957
2958 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2959 iph->nexthdr = IPPROTO_UDP;
2960
2961 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2962 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2963
Arnaldo Carvalho de Melob0e380b2007-04-10 21:21:55 -07002964 skb->mac_header = (skb->network_header - ETH_HLEN -
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07002965 pkt_dev->pkt_overhead);
Steven Whitehouseca6549a2006-03-23 01:10:26 -08002966 skb->protocol = protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967 skb->dev = odev;
2968 skb->pkt_type = PACKET_HOST;
2969
Eric Dumazet26ad7872011-01-25 13:26:05 -08002970 pktgen_finalize_skb(pkt_dev, skb, datalen);
Luiz Capitulino222f1802006-03-20 22:16:13 -08002971
Linus Torvalds1da177e2005-04-16 15:20:36 -07002972 return skb;
2973}
2974
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00002975static struct sk_buff *fill_packet(struct net_device *odev,
2976 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002977{
Luiz Capitulino222f1802006-03-20 22:16:13 -08002978 if (pkt_dev->flags & F_IPV6)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002979 return fill_packet_ipv6(odev, pkt_dev);
2980 else
2981 return fill_packet_ipv4(odev, pkt_dev);
2982}
2983
Luiz Capitulino222f1802006-03-20 22:16:13 -08002984static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002985{
Luiz Capitulino222f1802006-03-20 22:16:13 -08002986 pkt_dev->seq_num = 1;
2987 pkt_dev->idle_acc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08002989 pkt_dev->tx_bytes = 0;
2990 pkt_dev->errors = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002991}
2992
2993/* Set up structure for sending pkts, clear counters */
2994
2995static void pktgen_run(struct pktgen_thread *t)
2996{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08002997 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002998 int started = 0;
2999
Joe Perchesf9467ea2010-06-21 12:29:14 +00003000 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003001
3002 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003003 list_for_each_entry(pkt_dev, &t->if_list, list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003004
3005 /*
3006 * setup odev and create initial packet.
3007 */
3008 pktgen_setup_inject(pkt_dev);
3009
Luiz Capitulino222f1802006-03-20 22:16:13 -08003010 if (pkt_dev->odev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003011 pktgen_clear_counters(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003012 pkt_dev->running = 1; /* Cranke yeself! */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003013 pkt_dev->skb = NULL;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003014 pkt_dev->started_at =
3015 pkt_dev->next_tx = ktime_now();
3016
Jamal Hadi Salim16dab722007-07-02 22:39:50 -07003017 set_pkt_overhead(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003018
Linus Torvalds1da177e2005-04-16 15:20:36 -07003019 strcpy(pkt_dev->result, "Starting");
3020 started++;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003021 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003022 strcpy(pkt_dev->result, "Error starting");
3023 }
3024 if_unlock(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003025 if (started)
3026 t->control &= ~(T_STOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003027}
3028
3029static void pktgen_stop_all_threads_ifs(void)
3030{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003031 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003032
Joe Perchesf9467ea2010-06-21 12:29:14 +00003033 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003034
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003035 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003036
3037 list_for_each_entry(t, &pktgen_threads, th_list)
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003038 t->control |= T_STOP;
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003039
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003040 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003041}
3042
Stephen Hemminger648fda72009-08-27 13:55:07 +00003043static int thread_is_running(const struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003044{
Stephen Hemminger648fda72009-08-27 13:55:07 +00003045 const struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003046
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003047 list_for_each_entry(pkt_dev, &t->if_list, list)
Stephen Hemminger648fda72009-08-27 13:55:07 +00003048 if (pkt_dev->running)
3049 return 1;
3050 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003051}
3052
Luiz Capitulino222f1802006-03-20 22:16:13 -08003053static int pktgen_wait_thread_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003054{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003055 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003056
Luiz Capitulino222f1802006-03-20 22:16:13 -08003057 while (thread_is_running(t)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003058
Luiz Capitulino222f1802006-03-20 22:16:13 -08003059 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003060
Luiz Capitulino222f1802006-03-20 22:16:13 -08003061 msleep_interruptible(100);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003062
Luiz Capitulino222f1802006-03-20 22:16:13 -08003063 if (signal_pending(current))
3064 goto signal;
3065 if_lock(t);
3066 }
3067 if_unlock(t);
3068 return 1;
3069signal:
3070 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003071}
3072
3073static int pktgen_wait_all_threads_run(void)
3074{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003075 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003076 int sig = 1;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003077
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003078 mutex_lock(&pktgen_thread_lock);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003079
3080 list_for_each_entry(t, &pktgen_threads, th_list) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003081 sig = pktgen_wait_thread_run(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003082 if (sig == 0)
3083 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003084 }
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003085
3086 if (sig == 0)
3087 list_for_each_entry(t, &pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003088 t->control |= (T_STOP);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003089
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003090 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003091 return sig;
3092}
3093
3094static void pktgen_run_all_threads(void)
3095{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003096 struct pktgen_thread *t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003097
Joe Perchesf9467ea2010-06-21 12:29:14 +00003098 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003099
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003100 mutex_lock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003101
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003102 list_for_each_entry(t, &pktgen_threads, th_list)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003103 t->control |= (T_RUN);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003104
Luiz Capitulino6146e6a2006-03-20 22:24:45 -08003105 mutex_unlock(&pktgen_thread_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003106
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003107 /* Propagate thread->control */
3108 schedule_timeout_interruptible(msecs_to_jiffies(125));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003109
Linus Torvalds1da177e2005-04-16 15:20:36 -07003110 pktgen_wait_all_threads_run();
3111}
3112
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003113static void pktgen_reset_all_threads(void)
3114{
3115 struct pktgen_thread *t;
3116
Joe Perchesf9467ea2010-06-21 12:29:14 +00003117 func_enter();
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003118
3119 mutex_lock(&pktgen_thread_lock);
3120
3121 list_for_each_entry(t, &pktgen_threads, th_list)
3122 t->control |= (T_REMDEVALL);
3123
3124 mutex_unlock(&pktgen_thread_lock);
3125
Stephen Hemminger63adc6f2009-08-27 13:55:19 +00003126 /* Propagate thread->control */
3127 schedule_timeout_interruptible(msecs_to_jiffies(125));
Jesse Brandeburgeb37b412008-11-10 16:48:03 -08003128
3129 pktgen_wait_all_threads_run();
3130}
3131
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3133{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003134 __u64 bps, mbps, pps;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003135 char *p = pkt_dev->result;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003136 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3137 pkt_dev->started_at);
3138 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003139
Daniel Turull03a14ab2011-03-09 14:11:00 -08003140 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003141 (unsigned long long)ktime_to_us(elapsed),
3142 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3143 (unsigned long long)ktime_to_us(idle),
Luiz Capitulino222f1802006-03-20 22:16:13 -08003144 (unsigned long long)pkt_dev->sofar,
3145 pkt_dev->cur_pkt_size, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003146
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003147 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3148 ktime_to_ns(elapsed));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003149
Luiz Capitulino222f1802006-03-20 22:16:13 -08003150 bps = pps * 8 * pkt_dev->cur_pkt_size;
3151
3152 mbps = bps;
3153 do_div(mbps, 1000000);
3154 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3155 (unsigned long long)pps,
3156 (unsigned long long)mbps,
3157 (unsigned long long)bps,
3158 (unsigned long long)pkt_dev->errors);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003159}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003160
3161/* Set stopped-at timer, remove from running list, do counters & statistics */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003162static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003163{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003164 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003165
Luiz Capitulino222f1802006-03-20 22:16:13 -08003166 if (!pkt_dev->running) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003167 pr_warning("interface: %s is already stopped\n",
3168 pkt_dev->odevname);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003169 return -EINVAL;
3170 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003171
Stephen Hemminger3bda06a2009-08-27 13:55:10 +00003172 kfree_skb(pkt_dev->skb);
3173 pkt_dev->skb = NULL;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003174 pkt_dev->stopped_at = ktime_now();
Luiz Capitulino222f1802006-03-20 22:16:13 -08003175 pkt_dev->running = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003176
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003177 show_results(pkt_dev, nr_frags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003178
Luiz Capitulino222f1802006-03-20 22:16:13 -08003179 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003180}
3181
Luiz Capitulino222f1802006-03-20 22:16:13 -08003182static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003183{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003184 struct pktgen_dev *pkt_dev, *best = NULL;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003185
Linus Torvalds1da177e2005-04-16 15:20:36 -07003186 if_lock(t);
3187
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003188 list_for_each_entry(pkt_dev, &t->if_list, list) {
3189 if (!pkt_dev->running)
Luiz Capitulino222f1802006-03-20 22:16:13 -08003190 continue;
3191 if (best == NULL)
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003192 best = pkt_dev;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003193 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003194 best = pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003195 }
3196 if_unlock(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003197 return best;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003198}
3199
Luiz Capitulino222f1802006-03-20 22:16:13 -08003200static void pktgen_stop(struct pktgen_thread *t)
3201{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003202 struct pktgen_dev *pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003203
Joe Perchesf9467ea2010-06-21 12:29:14 +00003204 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003205
Luiz Capitulino222f1802006-03-20 22:16:13 -08003206 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003207
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003208 list_for_each_entry(pkt_dev, &t->if_list, list) {
3209 pktgen_stop_device(pkt_dev);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003210 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003211
Luiz Capitulino222f1802006-03-20 22:16:13 -08003212 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003213}
3214
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003215/*
3216 * one of our devices needs to be removed - find it
3217 * and remove it
3218 */
3219static void pktgen_rem_one_if(struct pktgen_thread *t)
3220{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003221 struct list_head *q, *n;
3222 struct pktgen_dev *cur;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003223
Joe Perchesf9467ea2010-06-21 12:29:14 +00003224 func_enter();
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003225
3226 if_lock(t);
3227
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003228 list_for_each_safe(q, n, &t->if_list) {
3229 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003230
Luiz Capitulino222f1802006-03-20 22:16:13 -08003231 if (!cur->removal_mark)
3232 continue;
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003233
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003234 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003235 cur->skb = NULL;
3236
3237 pktgen_remove_device(t, cur);
3238
3239 break;
3240 }
3241
3242 if_unlock(t);
3243}
3244
Luiz Capitulino222f1802006-03-20 22:16:13 -08003245static void pktgen_rem_all_ifs(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003246{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003247 struct list_head *q, *n;
3248 struct pktgen_dev *cur;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003249
Joe Perchesf9467ea2010-06-21 12:29:14 +00003250 func_enter();
3251
Luiz Capitulino222f1802006-03-20 22:16:13 -08003252 /* Remove all devices, free mem */
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003253
Luiz Capitulino222f1802006-03-20 22:16:13 -08003254 if_lock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003255
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003256 list_for_each_safe(q, n, &t->if_list) {
3257 cur = list_entry(q, struct pktgen_dev, list);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003258
Wei Yongjun86dc1ad2009-02-25 00:31:54 +00003259 kfree_skb(cur->skb);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003260 cur->skb = NULL;
3261
Linus Torvalds1da177e2005-04-16 15:20:36 -07003262 pktgen_remove_device(t, cur);
3263 }
3264
Luiz Capitulino222f1802006-03-20 22:16:13 -08003265 if_unlock(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003266}
3267
Luiz Capitulino222f1802006-03-20 22:16:13 -08003268static void pktgen_rem_thread(struct pktgen_thread *t)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003269{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003270 /* Remove from the thread list */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003271
David S. Milleree74baa2007-01-01 20:51:53 -08003272 remove_proc_entry(t->tsk->comm, pg_proc_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003273
Linus Torvalds1da177e2005-04-16 15:20:36 -07003274}
3275
Stephen Hemmingeref879792009-09-22 19:41:43 +00003276static void pktgen_resched(struct pktgen_dev *pkt_dev)
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003277{
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003278 ktime_t idle_start = ktime_now();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003279 schedule();
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003280 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003281}
3282
Stephen Hemmingeref879792009-09-22 19:41:43 +00003283static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3284{
3285 ktime_t idle_start = ktime_now();
3286
3287 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3288 if (signal_pending(current))
3289 break;
3290
3291 if (need_resched())
3292 pktgen_resched(pkt_dev);
3293 else
3294 cpu_relax();
3295 }
3296 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3297}
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003298
Stephen Hemminger475ac1e2009-08-27 13:55:08 +00003299static void pktgen_xmit(struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003300{
Stephen Hemminger00829822008-11-20 20:14:53 -08003301 struct net_device *odev = pkt_dev->odev;
Stephen Hemminger6fef4c02009-08-31 19:50:41 +00003302 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
Stephen Hemminger00829822008-11-20 20:14:53 -08003303 = odev->netdev_ops->ndo_start_xmit;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003304 struct netdev_queue *txq;
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003305 u16 queue_map;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003306 int ret;
3307
Stephen Hemmingeref879792009-09-22 19:41:43 +00003308 /* If device is offline, then don't send */
3309 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3310 pktgen_stop_device(pkt_dev);
Stephen Hemminger3791dec2009-08-27 13:55:11 +00003311 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003312 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003313
Stephen Hemmingeref879792009-09-22 19:41:43 +00003314 /* This is max DELAY, this has special meaning of
3315 * "never transmit"
3316 */
3317 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3318 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3319 return;
3320 }
3321
3322 /* If no skb or clone count exhausted then get new one */
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003323 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3324 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3325 /* build a new pkt */
3326 kfree_skb(pkt_dev->skb);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003327
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003328 pkt_dev->skb = fill_packet(odev, pkt_dev);
3329 if (pkt_dev->skb == NULL) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003330 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003331 schedule();
3332 pkt_dev->clone_count--; /* back out increment, OOM */
3333 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003334 }
Eric Dumazetbaac8562009-11-05 21:04:32 -08003335 pkt_dev->last_pkt_size = pkt_dev->skb->len;
Stephen Hemminger7d7bb1c2009-08-27 13:55:12 +00003336 pkt_dev->allocated_skbs++;
3337 pkt_dev->clone_count = 0; /* reset counter */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003338 }
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003339
Stephen Hemmingeref879792009-09-22 19:41:43 +00003340 if (pkt_dev->delay && pkt_dev->last_ok)
3341 spin(pkt_dev, pkt_dev->next_tx);
3342
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003343 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3344 txq = netdev_get_tx_queue(odev, queue_map);
3345
3346 __netif_tx_lock_bh(txq);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003347
Eric Dumazet5a0d2262010-11-23 10:42:02 +00003348 if (unlikely(netif_tx_queue_frozen_or_stopped(txq))) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003349 ret = NETDEV_TX_BUSY;
Eric Dumazet0835acf2009-09-30 13:03:33 +00003350 pkt_dev->last_ok = 0;
3351 goto unlock;
3352 }
3353 atomic_inc(&(pkt_dev->skb->users));
3354 ret = (*xmit)(pkt_dev->skb, odev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003355
Stephen Hemmingeref879792009-09-22 19:41:43 +00003356 switch (ret) {
3357 case NETDEV_TX_OK:
3358 txq_trans_update(txq);
3359 pkt_dev->last_ok = 1;
3360 pkt_dev->sofar++;
3361 pkt_dev->seq_num++;
Eric Dumazetbaac8562009-11-05 21:04:32 -08003362 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003363 break;
John Fastabendf466dba2009-12-23 22:02:57 -08003364 case NET_XMIT_DROP:
3365 case NET_XMIT_CN:
3366 case NET_XMIT_POLICED:
3367 /* skb has been consumed */
3368 pkt_dev->errors++;
3369 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003370 default: /* Drivers are not supposed to return other values! */
3371 if (net_ratelimit())
Joe Perches58231182010-12-20 10:30:06 -08003372 pr_info("%s xmit error: %d\n", pkt_dev->odevname, ret);
Stephen Hemmingeref879792009-09-22 19:41:43 +00003373 pkt_dev->errors++;
3374 /* fallthru */
3375 case NETDEV_TX_LOCKED:
3376 case NETDEV_TX_BUSY:
3377 /* Retry it next time */
3378 atomic_dec(&(pkt_dev->skb->users));
3379 pkt_dev->last_ok = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003380 }
Eric Dumazet0835acf2009-09-30 13:03:33 +00003381unlock:
David S. Millerfd2ea0a2008-07-17 01:56:23 -07003382 __netif_tx_unlock_bh(txq);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003383
Linus Torvalds1da177e2005-04-16 15:20:36 -07003384 /* If pkt_dev->count is zero, then run forever */
3385 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
Stephen Hemmingeref879792009-09-22 19:41:43 +00003386 pktgen_wait_for_skb(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003387
Linus Torvalds1da177e2005-04-16 15:20:36 -07003388 /* Done with this */
3389 pktgen_stop_device(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003390 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003391}
Linus Torvalds1da177e2005-04-16 15:20:36 -07003392
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003393/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07003394 * Main loop of the thread goes here
3395 */
3396
David S. Milleree74baa2007-01-01 20:51:53 -08003397static int pktgen_thread_worker(void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003398{
3399 DEFINE_WAIT(wait);
David S. Milleree74baa2007-01-01 20:51:53 -08003400 struct pktgen_thread *t = arg;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003401 struct pktgen_dev *pkt_dev = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003402 int cpu = t->cpu;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003403
David S. Milleree74baa2007-01-01 20:51:53 -08003404 BUG_ON(smp_processor_id() != cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003405
3406 init_waitqueue_head(&t->queue);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003407 complete(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003408
Joe Perchesf9467ea2010-06-21 12:29:14 +00003409 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
Linus Torvalds1da177e2005-04-16 15:20:36 -07003410
David S. Milleree74baa2007-01-01 20:51:53 -08003411 set_current_state(TASK_INTERRUPTIBLE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003412
Rafael J. Wysocki83144182007-07-17 04:03:35 -07003413 set_freezable();
3414
David S. Milleree74baa2007-01-01 20:51:53 -08003415 while (!kthread_should_stop()) {
3416 pkt_dev = next_to_run(t);
3417
Stephen Hemmingeref879792009-09-22 19:41:43 +00003418 if (unlikely(!pkt_dev && t->control == 0)) {
Eric Dumazet551eaff2010-11-21 10:26:44 -08003419 if (pktgen_exiting)
3420 break;
Stephen Hemmingeref879792009-09-22 19:41:43 +00003421 wait_event_interruptible_timeout(t->queue,
3422 t->control != 0,
3423 HZ/10);
Rafael J. Wysocki1b3f7202010-02-04 14:00:41 -08003424 try_to_freeze();
Stephen Hemmingeref879792009-09-22 19:41:43 +00003425 continue;
David S. Milleree74baa2007-01-01 20:51:53 -08003426 }
Luiz Capitulino222f1802006-03-20 22:16:13 -08003427
Linus Torvalds1da177e2005-04-16 15:20:36 -07003428 __set_current_state(TASK_RUNNING);
3429
Stephen Hemmingeref879792009-09-22 19:41:43 +00003430 if (likely(pkt_dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003431 pktgen_xmit(pkt_dev);
3432
Stephen Hemmingeref879792009-09-22 19:41:43 +00003433 if (need_resched())
3434 pktgen_resched(pkt_dev);
3435 else
3436 cpu_relax();
3437 }
3438
Luiz Capitulino222f1802006-03-20 22:16:13 -08003439 if (t->control & T_STOP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003440 pktgen_stop(t);
3441 t->control &= ~(T_STOP);
3442 }
3443
Luiz Capitulino222f1802006-03-20 22:16:13 -08003444 if (t->control & T_RUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003445 pktgen_run(t);
3446 t->control &= ~(T_RUN);
3447 }
3448
Luiz Capitulino222f1802006-03-20 22:16:13 -08003449 if (t->control & T_REMDEVALL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003450 pktgen_rem_all_ifs(t);
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003451 t->control &= ~(T_REMDEVALL);
3452 }
3453
Luiz Capitulino222f1802006-03-20 22:16:13 -08003454 if (t->control & T_REMDEV) {
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003455 pktgen_rem_one_if(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003456 t->control &= ~(T_REMDEV);
3457 }
3458
Andrew Morton09fe3ef2007-04-12 14:45:32 -07003459 try_to_freeze();
3460
David S. Milleree74baa2007-01-01 20:51:53 -08003461 set_current_state(TASK_INTERRUPTIBLE);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003462 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003463
Joe Perchesf9467ea2010-06-21 12:29:14 +00003464 pr_debug("%s stopping all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003465 pktgen_stop(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003466
Joe Perchesf9467ea2010-06-21 12:29:14 +00003467 pr_debug("%s removing all device\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003468 pktgen_rem_all_ifs(t);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003469
Joe Perchesf9467ea2010-06-21 12:29:14 +00003470 pr_debug("%s removing thread\n", t->tsk->comm);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003471 pktgen_rem_thread(t);
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003472
Eric Dumazet551eaff2010-11-21 10:26:44 -08003473 /* Wait for kthread_stop */
3474 while (!kthread_should_stop()) {
3475 set_current_state(TASK_INTERRUPTIBLE);
3476 schedule();
3477 }
3478 __set_current_state(TASK_RUNNING);
3479
David S. Milleree74baa2007-01-01 20:51:53 -08003480 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003481}
3482
Luiz Capitulino222f1802006-03-20 22:16:13 -08003483static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
Eric Dumazet3e984842009-11-24 14:50:53 -08003484 const char *ifname, bool exact)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003485{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003486 struct pktgen_dev *p, *pkt_dev = NULL;
Eric Dumazet3e984842009-11-24 14:50:53 -08003487 size_t len = strlen(ifname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003488
Eric Dumazet3e984842009-11-24 14:50:53 -08003489 if_lock(t);
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003490 list_for_each_entry(p, &t->if_list, list)
Eric Dumazet3e984842009-11-24 14:50:53 -08003491 if (strncmp(p->odevname, ifname, len) == 0) {
3492 if (p->odevname[len]) {
3493 if (exact || p->odevname[len] != '@')
3494 continue;
3495 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003496 pkt_dev = p;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003497 break;
3498 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003499
Luiz Capitulino222f1802006-03-20 22:16:13 -08003500 if_unlock(t);
Joe Perchesf9467ea2010-06-21 12:29:14 +00003501 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003502 return pkt_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003503}
3504
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003505/*
3506 * Adds a dev at front of if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003507 */
3508
Luiz Capitulino222f1802006-03-20 22:16:13 -08003509static int add_dev_to_thread(struct pktgen_thread *t,
3510 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003511{
3512 int rv = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003513
Luiz Capitulino222f1802006-03-20 22:16:13 -08003514 if_lock(t);
3515
3516 if (pkt_dev->pg_thread) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003517 pr_err("ERROR: already assigned to a thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003518 rv = -EBUSY;
3519 goto out;
3520 }
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003521
3522 list_add(&pkt_dev->list, &t->if_list);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003523 pkt_dev->pg_thread = t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003524 pkt_dev->running = 0;
3525
Luiz Capitulino222f1802006-03-20 22:16:13 -08003526out:
3527 if_unlock(t);
3528 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003529}
3530
3531/* Called under thread lock */
3532
Luiz Capitulino222f1802006-03-20 22:16:13 -08003533static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003534{
Luiz Capitulino222f1802006-03-20 22:16:13 -08003535 struct pktgen_dev *pkt_dev;
Stephen Hemminger39df2322007-03-04 16:11:51 -08003536 int err;
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003537 int node = cpu_to_node(t->cpu);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003538
Linus Torvalds1da177e2005-04-16 15:20:36 -07003539 /* We don't allow a device to be on several threads */
3540
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003541 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3542 if (pkt_dev) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003543 pr_err("ERROR: interface already used\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003544 return -EBUSY;
3545 }
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003546
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003547 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003548 if (!pkt_dev)
3549 return -ENOMEM;
3550
Eric Dumazet593f63b2009-11-23 01:44:37 +00003551 strcpy(pkt_dev->odevname, ifname);
WANG Cong68d5ac22011-05-22 00:17:11 +00003552 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003553 node);
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003554 if (pkt_dev->flows == NULL) {
3555 kfree(pkt_dev);
3556 return -ENOMEM;
3557 }
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003558
Arthur Kepner95ed63f2006-03-20 21:26:56 -08003559 pkt_dev->removal_mark = 0;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003560 pkt_dev->min_pkt_size = ETH_ZLEN;
3561 pkt_dev->max_pkt_size = ETH_ZLEN;
3562 pkt_dev->nfrags = 0;
Stephen Hemmingerfd29cf72009-08-27 13:55:16 +00003563 pkt_dev->delay = pg_delay_d;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003564 pkt_dev->count = pg_count_d;
3565 pkt_dev->sofar = 0;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003566 pkt_dev->udp_src_min = 9; /* sink port */
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003567 pkt_dev->udp_src_max = 9;
3568 pkt_dev->udp_dst_min = 9;
3569 pkt_dev->udp_dst_max = 9;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003570 pkt_dev->vlan_p = 0;
3571 pkt_dev->vlan_cfi = 0;
3572 pkt_dev->vlan_id = 0xffff;
3573 pkt_dev->svlan_p = 0;
3574 pkt_dev->svlan_cfi = 0;
3575 pkt_dev->svlan_id = 0xffff;
Robert Olssone99b99b2010-03-18 22:44:30 +00003576 pkt_dev->node = -1;
Francesco Fondelli34954dd2006-09-27 16:30:44 -07003577
Stephen Hemminger39df2322007-03-04 16:11:51 -08003578 err = pktgen_setup_dev(pkt_dev, ifname);
3579 if (err)
3580 goto out1;
Neil Hormand8873312011-07-26 06:05:37 +00003581 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3582 pkt_dev->clone_skb = pg_clone_skb_d;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003583
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003584 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3585 &pktgen_if_fops, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003586 if (!pkt_dev->entry) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003587 pr_err("cannot create %s/%s procfs entry\n",
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003588 PG_PROC_DIR, ifname);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003589 err = -EINVAL;
3590 goto out2;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003591 }
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003592#ifdef CONFIG_XFRM
3593 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3594 pkt_dev->ipsproto = IPPROTO_ESP;
3595#endif
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003596
3597 return add_dev_to_thread(t, pkt_dev);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003598out2:
3599 dev_put(pkt_dev->odev);
3600out1:
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003601#ifdef CONFIG_XFRM
3602 free_SAs(pkt_dev);
3603#endif
Figo.zhang1d0ebfe2009-06-08 00:40:35 -07003604 vfree(pkt_dev->flows);
Stephen Hemminger39df2322007-03-04 16:11:51 -08003605 kfree(pkt_dev);
3606 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003607}
3608
David S. Milleree74baa2007-01-01 20:51:53 -08003609static int __init pktgen_create_thread(int cpu)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003610{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003611 struct pktgen_thread *t;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003612 struct proc_dir_entry *pe;
David S. Milleree74baa2007-01-01 20:51:53 -08003613 struct task_struct *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003614
Eric Dumazet3291b9d2009-11-29 00:44:33 -08003615 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3616 cpu_to_node(cpu));
Luiz Capitulino222f1802006-03-20 22:16:13 -08003617 if (!t) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003618 pr_err("ERROR: out of memory, can't create new thread\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003619 return -ENOMEM;
3620 }
3621
Luiz Capitulino222f1802006-03-20 22:16:13 -08003622 spin_lock_init(&t->if_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003623 t->cpu = cpu;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003624
David S. Milleree74baa2007-01-01 20:51:53 -08003625 INIT_LIST_HEAD(&t->if_list);
3626
3627 list_add_tail(&t->th_list, &pktgen_threads);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003628 init_completion(&t->start_done);
David S. Milleree74baa2007-01-01 20:51:53 -08003629
Eric Dumazet94dcf292011-03-22 16:30:45 -07003630 p = kthread_create_on_node(pktgen_thread_worker,
3631 t,
3632 cpu_to_node(cpu),
3633 "kpktgend_%d", cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003634 if (IS_ERR(p)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003635 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
David S. Milleree74baa2007-01-01 20:51:53 -08003636 list_del(&t->th_list);
3637 kfree(t);
3638 return PTR_ERR(p);
3639 }
3640 kthread_bind(p, cpu);
3641 t->tsk = p;
3642
Denis V. Lunev5efdccb2008-05-02 02:46:22 -07003643 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3644 &pktgen_thread_fops, t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003645 if (!pe) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003646 pr_err("cannot create %s/%s procfs entry\n",
David S. Milleree74baa2007-01-01 20:51:53 -08003647 PG_PROC_DIR, t->tsk->comm);
3648 kthread_stop(p);
3649 list_del(&t->th_list);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003650 kfree(t);
3651 return -EINVAL;
3652 }
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003653
David S. Milleree74baa2007-01-01 20:51:53 -08003654 wake_up_process(p);
Denis V. Lunevd3ede322008-05-20 15:12:44 -07003655 wait_for_completion(&t->start_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003656
3657 return 0;
3658}
3659
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09003660/*
3661 * Removes a device from the thread if_list.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003662 */
Luiz Capitulino222f1802006-03-20 22:16:13 -08003663static void _rem_dev_from_if_list(struct pktgen_thread *t,
3664 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003665{
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003666 struct list_head *q, *n;
3667 struct pktgen_dev *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003668
Luiz Capitulinoc26a8012006-03-20 22:18:16 -08003669 list_for_each_safe(q, n, &t->if_list) {
3670 p = list_entry(q, struct pktgen_dev, list);
3671 if (p == pkt_dev)
3672 list_del(&p->list);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003673 }
3674}
3675
Luiz Capitulino222f1802006-03-20 22:16:13 -08003676static int pktgen_remove_device(struct pktgen_thread *t,
3677 struct pktgen_dev *pkt_dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003678{
3679
Joe Perchesf9467ea2010-06-21 12:29:14 +00003680 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003681
Luiz Capitulino222f1802006-03-20 22:16:13 -08003682 if (pkt_dev->running) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003683 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
Luiz Capitulino222f1802006-03-20 22:16:13 -08003684 pktgen_stop_device(pkt_dev);
3685 }
3686
3687 /* Dis-associate from the interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003688
3689 if (pkt_dev->odev) {
3690 dev_put(pkt_dev->odev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003691 pkt_dev->odev = NULL;
3692 }
3693
Linus Torvalds1da177e2005-04-16 15:20:36 -07003694 /* And update the thread if_list */
3695
3696 _rem_dev_from_if_list(t, pkt_dev);
3697
Stephen Hemminger39df2322007-03-04 16:11:51 -08003698 if (pkt_dev->entry)
3699 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003700
Jamal Hadi Salima553e4a2007-07-02 22:41:59 -07003701#ifdef CONFIG_XFRM
3702 free_SAs(pkt_dev);
3703#endif
Figo.zhang1d0ebfe2009-06-08 00:40:35 -07003704 vfree(pkt_dev->flows);
Eric Dumazet26ad7872011-01-25 13:26:05 -08003705 if (pkt_dev->page)
3706 put_page(pkt_dev->page);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003707 kfree(pkt_dev);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003708 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003709}
3710
Luiz Capitulino222f1802006-03-20 22:16:13 -08003711static int __init pg_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003712{
3713 int cpu;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003714 struct proc_dir_entry *pe;
WANG Congce14f892011-05-22 00:52:08 +00003715 int ret = 0;
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003716
Joe Perchesf9467ea2010-06-21 12:29:14 +00003717 pr_info("%s", version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003718
Eric W. Biederman457c4cb2007-09-12 12:01:34 +02003719 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003720 if (!pg_proc_dir)
3721 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003722
Wang Chen25296d52008-02-28 14:11:49 -08003723 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003724 if (pe == NULL) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003725 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
WANG Congce14f892011-05-22 00:52:08 +00003726 ret = -EINVAL;
3727 goto remove_dir;
Luiz Capitulino222f1802006-03-20 22:16:13 -08003728 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003729
Linus Torvalds1da177e2005-04-16 15:20:36 -07003730 register_netdevice_notifier(&pktgen_notifier_block);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003731
John Hawkes670c02c2005-10-13 09:30:31 -07003732 for_each_online_cpu(cpu) {
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003733 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003734
David S. Milleree74baa2007-01-01 20:51:53 -08003735 err = pktgen_create_thread(cpu);
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003736 if (err)
Joe Perchesf9467ea2010-06-21 12:29:14 +00003737 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3738 cpu, err);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003739 }
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003740
3741 if (list_empty(&pktgen_threads)) {
Joe Perchesf9467ea2010-06-21 12:29:14 +00003742 pr_err("ERROR: Initialization failed for all threads\n");
WANG Congce14f892011-05-22 00:52:08 +00003743 ret = -ENODEV;
3744 goto unregister;
Luiz Capitulino8024bb22006-03-20 22:17:55 -08003745 }
3746
Luiz Capitulino222f1802006-03-20 22:16:13 -08003747 return 0;
WANG Congce14f892011-05-22 00:52:08 +00003748
3749 unregister:
3750 unregister_netdevice_notifier(&pktgen_notifier_block);
3751 remove_proc_entry(PGCTRL, pg_proc_dir);
3752 remove_dir:
3753 proc_net_remove(&init_net, PG_PROC_DIR);
3754 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003755}
3756
3757static void __exit pg_cleanup(void)
3758{
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003759 struct pktgen_thread *t;
3760 struct list_head *q, *n;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003761
Luiz Capitulino222f1802006-03-20 22:16:13 -08003762 /* Stop all interfaces & threads */
Eric Dumazet551eaff2010-11-21 10:26:44 -08003763 pktgen_exiting = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003764
Luiz Capitulinocdcdbe02006-03-20 22:16:40 -08003765 list_for_each_safe(q, n, &pktgen_threads) {
3766 t = list_entry(q, struct pktgen_thread, th_list);
David S. Milleree74baa2007-01-01 20:51:53 -08003767 kthread_stop(t->tsk);
3768 kfree(t);
Luiz Capitulino222f1802006-03-20 22:16:13 -08003769 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003770
Luiz Capitulino222f1802006-03-20 22:16:13 -08003771 /* Un-register us from receiving netdevice events */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003772 unregister_netdevice_notifier(&pktgen_notifier_block);
3773
Luiz Capitulino222f1802006-03-20 22:16:13 -08003774 /* Clean up proc file system */
Stephen Hemmingerd50a6b52005-10-14 15:42:33 -07003775 remove_proc_entry(PGCTRL, pg_proc_dir);
Eric W. Biederman457c4cb2007-09-12 12:01:34 +02003776 proc_net_remove(&init_net, PG_PROC_DIR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003777}
3778
Linus Torvalds1da177e2005-04-16 15:20:36 -07003779module_init(pg_init);
3780module_exit(pg_cleanup);
3781
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003782MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003783MODULE_DESCRIPTION("Packet Generator tool");
3784MODULE_LICENSE("GPL");
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003785MODULE_VERSION(VERSION);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003786module_param(pg_count_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003787MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003788module_param(pg_delay_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003789MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003790module_param(pg_clone_skb_d, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003791MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003792module_param(debug, int, 0);
Stephen Hemmingerc3d2f522009-08-27 13:55:20 +00003793MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");