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neigh: fix rcu splat in neigh_update()
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
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>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
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.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * 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 *
4ec93edb
YH		 47 * 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
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * 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
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --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 *
4ec93edb 63 *
1da177e4
LT		 64 * 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:
4ec93edb
YH		 68 * 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
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * 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.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * 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>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#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>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#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>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#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>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
268bb0ce 159#include <linux/prefetch.h>
457c4cbc 160#include <net/net_namespace.h>
1da177e4
LT		 161#include <net/checksum.h>
162#include <net/ipv6.h>
163#include <net/addrconf.h>
a553e4a6
JHS		 164#ifdef CONFIG_XFRM
165#include <net/xfrm.h>
166#endif
1da177e4
LT		 167#include <asm/byteorder.h>
168#include <linux/rcupdate.h>
1977f032 169#include <linux/bitops.h>
63adc6fb
SH		 170#include <linux/io.h>
171#include <linux/timex.h>
172#include <linux/uaccess.h>
1da177e4 173#include <asm/dma.h>
222f1806 174#include <asm/div64.h> /* do_div */
1da177e4 175
43d28b65 176#define VERSION "2.74"
1da177e4 177#define IP_NAME_SZ 32
ca6549af 178#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 179#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 180
f9467eae
JP		 181#define func_enter() pr_debug("entering %s\n", __func__);
182
1da177e4 183/* Device flag bits */
222f1806
LC		 184#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 */
ca6549af 192#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 193#define F_VID_RND (1<<9) /* Random VLAN ID */
194#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 195#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 196#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 197#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 198#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 199#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 200
201/* Thread control flag bits */
6b80d6a6
SH		 202#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 */
1da177e4 206
1da177e4
LT		 207/* 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
d50a6b56
SH		 213#define PG_PROC_DIR "pktgen"
214#define PGCTRL "pgctrl"
63adc6fb 215static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 216
217#define MAX_CFLOWS 65536
218
34954ddc
FF		 219#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
220#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
221
222f1806 222struct flow_state {
252e3346 223 __be32 cur_daddr;
222f1806 224 int count;
a553e4a6
JHS		 225#ifdef CONFIG_XFRM
226 struct xfrm_state *x;
227#endif
007a531b 228 __u32 flags;
1da177e4
LT		 229};
230
007a531b
JHS		 231/* flow flag bits */
232#define F_INIT (1<<0) /* flow has been initialized */
233
1da177e4 234struct pktgen_dev {
1da177e4
LT		 235 /*
236 * Try to keep frequent/infrequent used vars. separated.
237 */
39df232f
SH		 238 struct proc_dir_entry *entry; /* proc file */
239 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 240 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 241
63adc6fb 242 int running; /* if false, the test will stop */
1da177e4 243
222f1806
LC		 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;
95ed63f7
AK		 248 int removal_mark; /* non-zero => the device is marked for
249 * removal by worker thread */
1da177e4 250
222f1806
LC		 251 int min_pkt_size; /* = ETH_ZLEN; */
252 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 253 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 254 int nfrags;
26ad7879 255 struct page *page;
fd29cf72
SH		 256 u64 delay; /* nano-seconds */
257
222f1806
LC		 258 __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 */
f466dba1 261 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 262
263 /* runtime counters relating to clone_skb */
222f1806
LC		 264
265 __u64 allocated_skbs;
266 __u32 clone_count;
267 int last_ok; /* Was last skb sent?
63adc6fb
SH		 268 * Or a failed transmit of some sort?
269 * This will keep sequence numbers in order
222f1806 270 */
fd29cf72
SH		 271 ktime_t next_tx;
272 ktime_t started_at;
273 ktime_t stopped_at;
274 u64 idle_acc; /* nano-seconds */
275
222f1806
LC		 276 __u32 seq_num;
277
63adc6fb
SH		 278 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.
222f1806
LC		 286 */
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;
1da177e4 297 /* For ranges */
222f1806
LC		 298 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;
302
303 /* If we're doing ranges, random or incremental, then this
304 * defines the min/max for those ranges.
305 */
252e3346
AV		 306 __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 */
222f1806
LC		 310
311 __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 */
315
1ca7768c 316 /* DSCP + ECN */
63adc6fb
SH		 317 __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) */
1ca7768c 321
ca6549af
SW		 322 /* MPLS */
323 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
324 __be32 labels[MAX_MPLS_LABELS];
325
34954ddc
FF		 326 /* 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
222f1806
LC		 335 __u32 src_mac_count; /* How many MACs to iterate through */
336 __u32 dst_mac_count; /* How many MACs to iterate through */
337
338 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;
252e3346
AV		 343 __be32 cur_saddr;
344 __be32 cur_daddr;
66ed1e5e 345 __u16 ip_id;
222f1806
LC		 346 __u16 cur_udp_dst;
347 __u16 cur_udp_src;
45b270f8 348 __u16 cur_queue_map;
222f1806 349 __u32 cur_pkt_size;
baac8564 350 __u32 last_pkt_size;
222f1806
LC		 351
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
63adc6fb 363 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 364 * are transmitting the same one multiple times
365 */
63adc6fb
SH		 366 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 */
593f63b0 374 char odevname[32];
1da177e4 375 struct flow_state *flows;
222f1806
LC		 376 unsigned cflows; /* Concurrent flows (config) */
377 unsigned lflow; /* Flow length (config) */
378 unsigned nflows; /* accumulated flows (stats) */
007a531b 379 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 380
381 u16 queue_map_min;
382 u16 queue_map_max;
9e50e3ac 383 __u32 skb_priority; /* skb priority field */
e99b99b4 384 int node; /* Memory node */
45b270f8 385
a553e4a6
JHS		 386#ifdef CONFIG_XFRM
387 __u8 ipsmode; /* IPSEC mode (config) */
388 __u8 ipsproto; /* IPSEC type (config) */
389#endif
39df232f 390 char result[512];
1da177e4
LT		 391};
392
393struct pktgen_hdr {
252e3346
AV		 394 __be32 pgh_magic;
395 __be32 seq_num;
396 __be32 tv_sec;
397 __be32 tv_usec;
1da177e4
LT		 398};
399
551eaff1
ED		 400static bool pktgen_exiting __read_mostly;
401
1da177e4 402struct pktgen_thread {
63adc6fb 403 spinlock_t if_lock; /* for list of devices */
c26a8016 404 struct list_head if_list; /* All device here */
cdcdbe0b 405 struct list_head th_list;
ee74baa7 406 struct task_struct *tsk;
222f1806 407 char result[512];
222f1806 408
63adc6fb
SH		 409 /* Field for thread to receive "posted" events terminate,
410 stop ifs etc. */
222f1806
LC		 411
412 u32 control;
1da177e4
LT		 413 int cpu;
414
222f1806 415 wait_queue_head_t queue;
d3ede327 416 struct completion start_done;
1da177e4
LT		 417};
418
419#define REMOVE 1
420#define FIND 0
421
fd29cf72 422static inline ktime_t ktime_now(void)
1da177e4 423{
fd29cf72
SH		 424 struct timespec ts;
425 ktime_get_ts(&ts);
426
427 return timespec_to_ktime(ts);
1da177e4
LT		 428}
429
fd29cf72
SH		 430/* 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)
1da177e4 432{
fd29cf72 433 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 434}
435
c3d2f52d 436static const char version[] =
f9467eae
JP		 437 "Packet Generator for packet performance testing. "
438 "Version: " VERSION "\n";
1da177e4 439
222f1806
LC		 440static 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,
3e984840 443 const char *ifname, bool exact);
1da177e4
LT		 444static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
445static void pktgen_run_all_threads(void);
eb37b41c 446static void pktgen_reset_all_threads(void);
1da177e4 447static void pktgen_stop_all_threads_ifs(void);
3bda06a3 448
222f1806 449static void pktgen_stop(struct pktgen_thread *t);
1da177e4 450static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 451
222f1806 452static unsigned int scan_ip6(const char *s, char ip[16]);
1da177e4
LT		 453
454/* Module parameters, defaults. */
65c5b786
SH		 455static 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;
1da177e4 459
222fa076 460static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 461static LIST_HEAD(pktgen_threads);
1da177e4 462
1da177e4
LT		 463static struct notifier_block pktgen_notifier_block = {
464 .notifier_call = pktgen_device_event,
465};
466
1da177e4 467/*
4ec93edb 468 * /proc handling functions
1da177e4
LT		 469 *
470 */
471
d50a6b56 472static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 473{
c3d2f52d 474 seq_puts(seq, version);
d50a6b56 475 return 0;
1da177e4
LT		 476}
477
63adc6fb
SH		 478static ssize_t pgctrl_write(struct file *file, const char __user *buf,
479 size_t count, loff_t *ppos)
1da177e4 480{
1da177e4 481 int err = 0;
d50a6b56 482 char data[128];
1da177e4 483
222f1806
LC		 484 if (!capable(CAP_NET_ADMIN)) {
485 err = -EPERM;
1da177e4 486 goto out;
222f1806 487 }
1da177e4 488
d50a6b56
SH		 489 if (count > sizeof(data))
490 count = sizeof(data);
1da177e4 491
1da177e4 492 if (copy_from_user(data, buf, count)) {
b4099fab 493 err = -EFAULT;
d50a6b56 494 goto out;
222f1806
LC		 495 }
496 data[count - 1] = 0; /* Make string */
1da177e4 497
222f1806 498 if (!strcmp(data, "stop"))
1da177e4
LT		 499 pktgen_stop_all_threads_ifs();
500
222f1806 501 else if (!strcmp(data, "start"))
1da177e4
LT		 502 pktgen_run_all_threads();
503
eb37b41c
JB		 504 else if (!strcmp(data, "reset"))
505 pktgen_reset_all_threads();
506
222f1806 507 else
f9467eae 508 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 509
510 err = count;
511
222f1806
LC		 512out:
513 return err;
1da177e4
LT		 514}
515
d50a6b56
SH		 516static int pgctrl_open(struct inode *inode, struct file *file)
517{
518 return single_open(file, pgctrl_show, PDE(inode)->data);
519}
520
9a32144e 521static const struct file_operations pktgen_fops = {
222f1806
LC		 522 .owner = THIS_MODULE,
523 .open = pgctrl_open,
524 .read = seq_read,
525 .llseek = seq_lseek,
526 .write = pgctrl_write,
527 .release = single_release,
d50a6b56
SH		 528};
529
530static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 531{
648fda74 532 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 533 ktime_t stopped;
534 u64 idle;
222f1806
LC		 535
536 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);
540
541 seq_printf(seq,
fd29cf72
SH		 542 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
543 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 544 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 545
546 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
547 pkt_dev->lflow);
548
45b270f8
RO		 549 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
9e50e3ac
JF		 554 if (pkt_dev->skb_priority)
555 seq_printf(seq, " skb_priority: %u\n",
556 pkt_dev->skb_priority);
557
222f1806 558 if (pkt_dev->flags & F_IPV6) {
222f1806 559 seq_printf(seq,
47a0200d
AD		 560 " 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);
63adc6fb
SH		 566 } else {
567 seq_printf(seq,
568 " dst_min: %s dst_max: %s\n",
569 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 570 seq_printf(seq,
63adc6fb
SH		 571 " src_min: %s src_max: %s\n",
572 pkt_dev->src_min, pkt_dev->src_max);
573 }
1da177e4 574
222f1806 575 seq_puts(seq, " src_mac: ");
1da177e4 576
e174961c
JB		 577 seq_printf(seq, "%pM ",
578 is_zero_ether_addr(pkt_dev->src_mac) ?
579 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 580
581 seq_printf(seq, "dst_mac: ");
e174961c 582 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 583
584 seq_printf(seq,
63adc6fb
SH		 585 " udp_src_min: %d udp_src_max: %d"
586 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 587 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
588 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
589
590 seq_printf(seq,
ca6549af 591 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 592 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 593
ca6549af
SW		 594 if (pkt_dev->nr_labels) {
595 unsigned i;
596 seq_printf(seq, " mpls: ");
e71a4783 597 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 598 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
599 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
600 }
601
63adc6fb 602 if (pkt_dev->vlan_id != 0xffff)
34954ddc 603 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 604 pkt_dev->vlan_id, pkt_dev->vlan_p,
605 pkt_dev->vlan_cfi);
34954ddc 606
63adc6fb 607 if (pkt_dev->svlan_id != 0xffff)
34954ddc 608 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 609 pkt_dev->svlan_id, pkt_dev->svlan_p,
610 pkt_dev->svlan_cfi);
34954ddc 611
63adc6fb 612 if (pkt_dev->tos)
1ca7768c 613 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 614
63adc6fb 615 if (pkt_dev->traffic_class)
1ca7768c 616 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 617
e99b99b4
RO		 618 if (pkt_dev->node >= 0)
619 seq_printf(seq, " node: %d\n", pkt_dev->node);
620
ca6549af
SW		 621 seq_printf(seq, " Flags: ");
622
222f1806
LC		 623 if (pkt_dev->flags & F_IPV6)
624 seq_printf(seq, "IPV6 ");
1da177e4 625
222f1806
LC		 626 if (pkt_dev->flags & F_IPSRC_RND)
627 seq_printf(seq, "IPSRC_RND ");
1da177e4 628
222f1806
LC		 629 if (pkt_dev->flags & F_IPDST_RND)
630 seq_printf(seq, "IPDST_RND ");
1da177e4 631
222f1806
LC		 632 if (pkt_dev->flags & F_TXSIZE_RND)
633 seq_printf(seq, "TXSIZE_RND ");
1da177e4 634
222f1806
LC		 635 if (pkt_dev->flags & F_UDPSRC_RND)
636 seq_printf(seq, "UDPSRC_RND ");
1da177e4 637
222f1806
LC		 638 if (pkt_dev->flags & F_UDPDST_RND)
639 seq_printf(seq, "UDPDST_RND ");
1da177e4 640
ca6549af
SW		 641 if (pkt_dev->flags & F_MPLS_RND)
642 seq_printf(seq, "MPLS_RND ");
643
45b270f8
RO		 644 if (pkt_dev->flags & F_QUEUE_MAP_RND)
645 seq_printf(seq, "QUEUE_MAP_RND ");
646
e6fce5b9
RO		 647 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
648 seq_printf(seq, "QUEUE_MAP_CPU ");
649
007a531b
JHS		 650 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
a553e4a6
JHS		 657#ifdef CONFIG_XFRM
658 if (pkt_dev->flags & F_IPSEC_ON)
659 seq_printf(seq, "IPSEC ");
660#endif
661
222f1806
LC		 662 if (pkt_dev->flags & F_MACSRC_RND)
663 seq_printf(seq, "MACSRC_RND ");
1da177e4 664
222f1806
LC		 665 if (pkt_dev->flags & F_MACDST_RND)
666 seq_printf(seq, "MACDST_RND ");
1da177e4 667
34954ddc
FF		 668 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
e99b99b4
RO		 674 if (pkt_dev->flags & F_NODE)
675 seq_printf(seq, "NODE_ALLOC ");
676
222f1806
LC		 677 seq_puts(seq, "\n");
678
fd29cf72
SH		 679 /* 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);
1da177e4 683
222f1806 684 seq_printf(seq,
fd29cf72 685 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 686 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 687 (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);
1da177e4 694
222f1806
LC		 695 seq_printf(seq,
696 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 697 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
698 pkt_dev->cur_src_mac_offset);
1da177e4 699
222f1806 700 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 701 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
702 &pkt_dev->cur_in6_saddr,
703 &pkt_dev->cur_in6_daddr);
222f1806
LC		 704 } else
705 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 706 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 707
222f1806 708 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 709 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 710
45b270f8
RO		 711 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
712
222f1806 713 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 714
715 if (pkt_dev->result[0])
222f1806 716 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 717 else
222f1806 718 seq_printf(seq, "Result: Idle\n");
1da177e4 719
d50a6b56 720 return 0;
1da177e4
LT		 721}
722
ca6549af 723
63adc6fb
SH		 724static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
725 __u32 *num)
ca6549af
SW		 726{
727 int i = 0;
728 *num = 0;
729
e71a4783 730 for (; i < maxlen; i++) {
82fd5b5d 731 int value;
ca6549af
SW		 732 char c;
733 *num <<= 4;
734 if (get_user(c, &user_buffer[i]))
735 return -EFAULT;
82fd5b5d
AS		 736 value = hex_to_bin(c);
737 if (value >= 0)
738 *num |= value;
ca6549af
SW		 739 else
740 break;
741 }
742 return i;
743}
744
222f1806
LC		 745static int count_trail_chars(const char __user * user_buffer,
746 unsigned int maxlen)
1da177e4
LT		 747{
748 int i;
749
750 for (i = 0; i < maxlen; i++) {
222f1806
LC		 751 char c;
752 if (get_user(c, &user_buffer[i]))
753 return -EFAULT;
754 switch (c) {
1da177e4
LT		 755 case '\"':
756 case '\n':
757 case '\r':
758 case '\t':
759 case ' ':
760 case '=':
761 break;
762 default:
763 goto done;
3ff50b79 764 }
1da177e4
LT		 765 }
766done:
767 return i;
768}
769
222f1806
LC		 770static unsigned long num_arg(const char __user * user_buffer,
771 unsigned long maxlen, unsigned long *num)
1da177e4 772{
d6182223 773 int i;
1da177e4 774 *num = 0;
222f1806 775
d6182223 776 for (i = 0; i < maxlen; i++) {
222f1806
LC		 777 char c;
778 if (get_user(c, &user_buffer[i]))
779 return -EFAULT;
780 if ((c >= '0') && (c <= '9')) {
1da177e4 781 *num *= 10;
222f1806 782 *num += c - '0';
1da177e4
LT		 783 } else
784 break;
785 }
786 return i;
787}
788
222f1806 789static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 790{
d6182223 791 int i;
1da177e4 792
d6182223 793 for (i = 0; i < maxlen; i++) {
222f1806
LC		 794 char c;
795 if (get_user(c, &user_buffer[i]))
796 return -EFAULT;
797 switch (c) {
1da177e4
LT		 798 case '\"':
799 case '\n':
800 case '\r':
801 case '\t':
802 case ' ':
803 goto done_str;
804 break;
805 default:
806 break;
3ff50b79 807 }
1da177e4
LT		 808 }
809done_str:
1da177e4
LT		 810 return i;
811}
812
ca6549af
SW		 813static 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;
1ca7768c 823 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 824 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;
e71a4783 836 } while (c == ',');
ca6549af
SW		 837
838 pkt_dev->nr_labels = n;
839 return i;
840}
841
222f1806
LC		 842static ssize_t pktgen_if_write(struct file *file,
843 const char __user * user_buffer, size_t count,
844 loff_t * offset)
1da177e4 845{
8a994a71 846 struct seq_file *seq = file->private_data;
222f1806 847 struct pktgen_dev *pkt_dev = seq->private;
d6182223 848 int i, max, len;
1da177e4
LT		 849 char name[16], valstr[32];
850 unsigned long value = 0;
222f1806
LC		 851 char *pg_result = NULL;
852 int tmp = 0;
1da177e4 853 char buf[128];
222f1806
LC		 854
855 pg_result = &(pkt_dev->result[0]);
856
1da177e4 857 if (count < 1) {
f9467eae 858 pr_warning("wrong command format\n");
1da177e4
LT		 859 return -EINVAL;
860 }
222f1806 861
d6182223
PG		 862 max = count;
863 tmp = count_trail_chars(user_buffer, max);
222f1806 864 if (tmp < 0) {
f9467eae 865 pr_warning("illegal format\n");
222f1806 866 return tmp;
1da177e4 867 }
d6182223 868 i = tmp;
222f1806 869
1da177e4
LT		 870 /* Read variable name */
871
872 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 873 if (len < 0)
222f1806 874 return len;
63adc6fb 875
1da177e4 876 memset(name, 0, sizeof(name));
222f1806 877 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 878 return -EFAULT;
879 i += len;
222f1806
LC		 880
881 max = count - i;
1da177e4 882 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 883 if (len < 0)
884 return len;
885
1da177e4
LT		 886 i += len;
887
888 if (debug) {
86c2c0a8 889 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 890 char tb[copy + 1];
891 if (copy_from_user(tb, user_buffer, copy))
1da177e4 892 return -EFAULT;
448d7b5d 893 tb[copy] = 0;
25a8b254 894 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 895 (unsigned long)count, tb);
896 }
1da177e4
LT		 897
898 if (!strcmp(name, "min_pkt_size")) {
899 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 900 if (len < 0)
222f1806 901 return len;
63adc6fb 902
1da177e4 903 i += len;
222f1806
LC		 904 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);
1da177e4
LT		 912 return count;
913 }
914
222f1806 915 if (!strcmp(name, "max_pkt_size")) {
1da177e4 916 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 917 if (len < 0)
222f1806 918 return len;
63adc6fb 919
1da177e4 920 i += len;
222f1806
LC		 921 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);
1da177e4
LT		 929 return count;
930 }
931
222f1806 932 /* Shortcut for min = max */
1da177e4
LT		 933
934 if (!strcmp(name, "pkt_size")) {
935 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 936 if (len < 0)
222f1806 937 return len;
63adc6fb 938
1da177e4 939 i += len;
222f1806
LC		 940 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 }
1da177e4
LT		 947 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
948 return count;
949 }
950
222f1806 951 if (!strcmp(name, "debug")) {
1da177e4 952 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 953 if (len < 0)
222f1806 954 return len;
63adc6fb 955
1da177e4 956 i += len;
222f1806 957 debug = value;
1da177e4
LT		 958 sprintf(pg_result, "OK: debug=%u", debug);
959 return count;
960 }
961
222f1806 962 if (!strcmp(name, "frags")) {
1da177e4 963 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 964 if (len < 0)
222f1806 965 return len;
63adc6fb 966
1da177e4
LT		 967 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);
63adc6fb 974 if (len < 0)
222f1806 975 return len;
63adc6fb 976
1da177e4 977 i += len;
fd29cf72
SH		 978 if (value == 0x7FFFFFFF)
979 pkt_dev->delay = ULLONG_MAX;
980 else
9240d715 981 pkt_dev->delay = (u64)value;
fd29cf72
SH		 982
983 sprintf(pg_result, "OK: delay=%llu",
984 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 985 return count;
986 }
43d28b65
DT		 987 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)
f9467eae 997 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 998
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)
f9467eae 1012 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1013
1014 sprintf(pg_result, "OK: rate=%lu", value);
1015 return count;
1016 }
222f1806 1017 if (!strcmp(name, "udp_src_min")) {
1da177e4 1018 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1019 if (len < 0)
222f1806 1020 return len;
63adc6fb 1021
1da177e4 1022 i += len;
222f1806
LC		 1023 if (value != pkt_dev->udp_src_min) {
1024 pkt_dev->udp_src_min = value;
1025 pkt_dev->cur_udp_src = value;
1026 }
1da177e4
LT		 1027 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1028 return count;
1029 }
222f1806 1030 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1031 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1032 if (len < 0)
222f1806 1033 return len;
63adc6fb 1034
1da177e4 1035 i += len;
222f1806
LC		 1036 if (value != pkt_dev->udp_dst_min) {
1037 pkt_dev->udp_dst_min = value;
1038 pkt_dev->cur_udp_dst = value;
1039 }
1da177e4
LT		 1040 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1041 return count;
1042 }
222f1806 1043 if (!strcmp(name, "udp_src_max")) {
1da177e4 1044 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1045 if (len < 0)
222f1806 1046 return len;
63adc6fb 1047
1da177e4 1048 i += len;
222f1806
LC		 1049 if (value != pkt_dev->udp_src_max) {
1050 pkt_dev->udp_src_max = value;
1051 pkt_dev->cur_udp_src = value;
1052 }
1da177e4
LT		 1053 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1054 return count;
1055 }
222f1806 1056 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1057 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1058 if (len < 0)
222f1806 1059 return len;
63adc6fb 1060
1da177e4 1061 i += len;
222f1806
LC		 1062 if (value != pkt_dev->udp_dst_max) {
1063 pkt_dev->udp_dst_max = value;
1064 pkt_dev->cur_udp_dst = value;
1065 }
1da177e4
LT		 1066 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);
63adc6fb 1071 if (len < 0)
222f1806 1072 return len;
d8873315
NH		 1073 if ((value > 0) &&
1074 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1075 return -ENOTSUPP;
1da177e4 1076 i += len;
222f1806
LC		 1077 pkt_dev->clone_skb = value;
1078
1da177e4
LT		 1079 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);
63adc6fb 1084 if (len < 0)
222f1806 1085 return len;
63adc6fb 1086
1da177e4
LT		 1087 i += len;
1088 pkt_dev->count = value;
1089 sprintf(pg_result, "OK: count=%llu",
222f1806 1090 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1091 return count;
1092 }
1093 if (!strcmp(name, "src_mac_count")) {
1094 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1095 if (len < 0)
222f1806 1096 return len;
63adc6fb 1097
1da177e4
LT		 1098 i += len;
1099 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1100 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);
1da177e4
LT		 1105 return count;
1106 }
1107 if (!strcmp(name, "dst_mac_count")) {
1108 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1109 if (len < 0)
222f1806 1110 return len;
63adc6fb 1111
1da177e4
LT		 1112 i += len;
1113 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1114 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);
1da177e4
LT		 1119 return count;
1120 }
e99b99b4
RO		 1121 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);
26ad7879
ED		 1131 if (pkt_dev->page) {
1132 put_page(pkt_dev->page);
1133 pkt_dev->page = NULL;
1134 }
e99b99b4
RO		 1135 }
1136 else
1137 sprintf(pg_result, "ERROR: node not possible");
1138 return count;
1139 }
1da177e4 1140 if (!strcmp(name, "flag")) {
222f1806
LC		 1141 char f[32];
1142 memset(f, 0, 32);
1da177e4 1143 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1144 if (len < 0)
222f1806 1145 return len;
63adc6fb 1146
1da177e4
LT		 1147 if (copy_from_user(f, &user_buffer[i], len))
1148 return -EFAULT;
1149 i += len;
222f1806
LC		 1150 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
ca6549af
SW		 1192 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
34954ddc
FF		 1198 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
007a531b
JHS		 1210 else if (strcmp(f, "FLOW_SEQ") == 0)
1211 pkt_dev->flags |= F_FLOW_SEQ;
1212
45b270f8
RO		 1213 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;
e6fce5b9
RO		 1218
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;
a553e4a6
JHS		 1224#ifdef CONFIG_XFRM
1225 else if (strcmp(f, "IPSEC") == 0)
1226 pkt_dev->flags |= F_IPSEC_ON;
1227#endif
1228
1ca7768c
FF		 1229 else if (strcmp(f, "!IPV6") == 0)
1230 pkt_dev->flags &= ~F_IPV6;
1231
e99b99b4
RO		 1232 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
222f1806
LC		 1238 else {
1239 sprintf(pg_result,
1240 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1241 f,
1ca7768c 1242 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1243 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1244 return count;
1245 }
1da177e4
LT		 1246 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);
63adc6fb 1251 if (len < 0)
222f1806 1252 return len;
1da177e4 1253
222f1806 1254 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1255 return -EFAULT;
222f1806
LC		 1256 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)
25a8b254 1264 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1265 pkt_dev->dst_min);
1266 i += len;
1da177e4
LT		 1267 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);
63adc6fb 1272 if (len < 0)
222f1806 1273 return len;
63adc6fb 1274
1da177e4 1275
222f1806 1276 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1277 return -EFAULT;
1278
222f1806
LC		 1279 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)
25a8b254 1287 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1288 pkt_dev->dst_max);
1da177e4
LT		 1289 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);
222f1806
LC		 1295 if (len < 0)
1296 return len;
1da177e4
LT		 1297
1298 pkt_dev->flags |= F_IPV6;
1299
222f1806 1300 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1301 return -EFAULT;
222f1806 1302 buf[len] = 0;
1da177e4
LT		 1303
1304 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
47a0200d 1305 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4
LT		 1306
1307 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1308
222f1806 1309 if (debug)
25a8b254 1310 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1311
222f1806 1312 i += len;
1da177e4
LT		 1313 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);
222f1806
LC		 1318 if (len < 0)
1319 return len;
1da177e4
LT		 1320
1321 pkt_dev->flags |= F_IPV6;
1322
222f1806 1323 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1324 return -EFAULT;
222f1806 1325 buf[len] = 0;
1da177e4
LT		 1326
1327 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
47a0200d 1328 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1329
222f1806
LC		 1330 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1331 &pkt_dev->min_in6_daddr);
1332 if (debug)
25a8b254 1333 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1334
222f1806 1335 i += len;
1da177e4
LT		 1336 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);
222f1806
LC		 1341 if (len < 0)
1342 return len;
1da177e4
LT		 1343
1344 pkt_dev->flags |= F_IPV6;
1345
222f1806 1346 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1347 return -EFAULT;
222f1806 1348 buf[len] = 0;
1da177e4
LT		 1349
1350 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
47a0200d 1351 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1352
222f1806 1353 if (debug)
25a8b254 1354 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1355
222f1806 1356 i += len;
1da177e4
LT		 1357 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);
222f1806
LC		 1362 if (len < 0)
1363 return len;
1da177e4
LT		 1364
1365 pkt_dev->flags |= F_IPV6;
1366
222f1806 1367 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1368 return -EFAULT;
222f1806 1369 buf[len] = 0;
1da177e4
LT		 1370
1371 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
47a0200d 1372 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4
LT		 1373
1374 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1375
222f1806 1376 if (debug)
25a8b254 1377 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1378
1379 i += len;
1da177e4
LT		 1380 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);
63adc6fb 1385 if (len < 0)
222f1806 1386 return len;
63adc6fb 1387
222f1806 1388 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1389 return -EFAULT;
222f1806
LC		 1390 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)
25a8b254 1398 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1399 pkt_dev->src_min);
1da177e4
LT		 1400 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);
63adc6fb 1406 if (len < 0)
222f1806 1407 return len;
63adc6fb 1408
222f1806 1409 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1410 return -EFAULT;
222f1806
LC		 1411 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)
25a8b254 1419 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1420 pkt_dev->src_max);
1da177e4
LT		 1421 i += len;
1422 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1423 return count;
1424 }
1425 if (!strcmp(name, "dst_mac")) {
1da177e4 1426 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1427 if (len < 0)
222f1806 1428 return len;
63adc6fb 1429
1da177e4 1430 memset(valstr, 0, sizeof(valstr));
222f1806 1431 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1432 return -EFAULT;
1da177e4 1433
4940fc88
AD		 1434 if (!mac_pton(valstr, pkt_dev->dst_mac))
1435 return -EINVAL;
1da177e4 1436 /* Set up Dest MAC */
4940fc88 1437 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1438
4940fc88 1439 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1440 return count;
1441 }
1442 if (!strcmp(name, "src_mac")) {
1da177e4 1443 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1444 if (len < 0)
222f1806 1445 return len;
63adc6fb 1446
1da177e4 1447 memset(valstr, 0, sizeof(valstr));
222f1806 1448 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1449 return -EFAULT;
1da177e4 1450
4940fc88
AD		 1451 if (!mac_pton(valstr, pkt_dev->src_mac))
1452 return -EINVAL;
ce5d0b47 1453 /* Set up Src MAC */
4940fc88 1454 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1455
4940fc88 1456 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1457 return count;
1458 }
1459
222f1806
LC		 1460 if (!strcmp(name, "clear_counters")) {
1461 pktgen_clear_counters(pkt_dev);
1462 sprintf(pg_result, "OK: Clearing counters.\n");
1463 return count;
1464 }
1da177e4
LT		 1465
1466 if (!strcmp(name, "flows")) {
1467 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1468 if (len < 0)
222f1806 1469 return len;
63adc6fb 1470
1da177e4
LT		 1471 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);
63adc6fb 1482 if (len < 0)
222f1806 1483 return len;
63adc6fb 1484
1da177e4
LT		 1485 i += len;
1486 pkt_dev->lflow = value;
1487 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1488 return count;
1489 }
222f1806 1490
45b270f8
RO		 1491 if (!strcmp(name, "queue_map_min")) {
1492 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1493 if (len < 0)
45b270f8 1494 return len;
63adc6fb 1495
45b270f8
RO		 1496 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);
63adc6fb 1504 if (len < 0)
45b270f8 1505 return len;
63adc6fb 1506
45b270f8
RO		 1507 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
ca6549af 1513 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1514 unsigned n, cnt;
1515
ca6549af 1516 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1517 if (len < 0)
1518 return len;
ca6549af 1519 i += len;
cfcabdcc 1520 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1521 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1522 cnt += sprintf(pg_result + cnt,
1523 "%08x%s", ntohl(pkt_dev->labels[n]),
1524 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1525
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)
25a8b254 1531 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1532 }
1533 return count;
1534 }
1535
1536 if (!strcmp(name, "vlan_id")) {
1537 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1538 if (len < 0)
34954ddc 1539 return len;
63adc6fb 1540
34954ddc
FF		 1541 i += len;
1542 if (value <= 4095) {
1543 pkt_dev->vlan_id = value; /* turn on VLAN */
1544
1545 if (debug)
25a8b254 1546 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1547
1548 if (debug && pkt_dev->nr_labels)
25a8b254 1549 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1550
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)
25a8b254 1558 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1559 }
1560 return count;
1561 }
1562
1563 if (!strcmp(name, "vlan_p")) {
1564 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1565 if (len < 0)
34954ddc 1566 return len;
63adc6fb 1567
34954ddc
FF		 1568 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);
63adc6fb 1580 if (len < 0)
34954ddc 1581 return len;
63adc6fb 1582
34954ddc
FF		 1583 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);
63adc6fb 1595 if (len < 0)
34954ddc 1596 return len;
63adc6fb 1597
34954ddc
FF		 1598 i += len;
1599 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1600 pkt_dev->svlan_id = value; /* turn on SVLAN */
1601
1602 if (debug)
25a8b254 1603 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1604
1605 if (debug && pkt_dev->nr_labels)
25a8b254 1606 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1607
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)
25a8b254 1615 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1616 }
1617 return count;
1618 }
1619
1620 if (!strcmp(name, "svlan_p")) {
1621 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1622 if (len < 0)
34954ddc 1623 return len;
63adc6fb 1624
34954ddc
FF		 1625 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);
63adc6fb 1637 if (len < 0)
34954ddc 1638 return len;
63adc6fb 1639
34954ddc
FF		 1640 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 }
ca6549af
SW		 1647 return count;
1648 }
1649
1ca7768c
FF		 1650 if (!strcmp(name, "tos")) {
1651 __u32 tmp_value = 0;
1652 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1653 if (len < 0)
1ca7768c 1654 return len;
63adc6fb 1655
1ca7768c
FF		 1656 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);
63adc6fb 1669 if (len < 0)
1ca7768c 1670 return len;
63adc6fb 1671
1ca7768c
FF		 1672 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
9e50e3ac
JF		 1682 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
1da177e4
LT		 1694 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1695 return -EINVAL;
1696}
1697
d50a6b56 1698static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1699{
d50a6b56
SH		 1700 return single_open(file, pktgen_if_show, PDE(inode)->data);
1701}
1da177e4 1702
9a32144e 1703static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1704 .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,
d50a6b56 1710};
1da177e4 1711
d50a6b56
SH		 1712static int pktgen_thread_show(struct seq_file *seq, void *v)
1713{
222f1806 1714 struct pktgen_thread *t = seq->private;
648fda74 1715 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1716
1717 BUG_ON(!t);
1da177e4 1718
222f1806 1719 seq_printf(seq, "Running: ");
1da177e4 1720
222f1806 1721 if_lock(t);
c26a8016 1722 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1723 if (pkt_dev->running)
593f63b0 1724 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1725
222f1806
LC		 1726 seq_printf(seq, "\nStopped: ");
1727
c26a8016 1728 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1729 if (!pkt_dev->running)
593f63b0 1730 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1731
1732 if (t->result[0])
d50a6b56 1733 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1734 else
d50a6b56 1735 seq_printf(seq, "\nResult: NA\n");
1da177e4 1736
222f1806 1737 if_unlock(t);
1da177e4 1738
d50a6b56 1739 return 0;
1da177e4
LT		 1740}
1741
d50a6b56 1742static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1743 const char __user * user_buffer,
1744 size_t count, loff_t * offset)
1da177e4 1745{
8a994a71 1746 struct seq_file *seq = file->private_data;
222f1806 1747 struct pktgen_thread *t = seq->private;
d6182223 1748 int i, max, len, ret;
1da177e4 1749 char name[40];
222f1806 1750 char *pg_result;
d50a6b56 1751
1da177e4 1752 if (count < 1) {
222f1806 1753 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1754 return -EINVAL;
1755 }
d50a6b56 1756
d6182223
PG		 1757 max = count;
1758 len = count_trail_chars(user_buffer, max);
222f1806 1759 if (len < 0)
d50a6b56
SH		 1760 return len;
1761
d6182223 1762 i = len;
d50a6b56 1763
1da177e4
LT		 1764 /* Read variable name */
1765
1766 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1767 if (len < 0)
d50a6b56 1768 return len;
222f1806 1769
1da177e4
LT		 1770 memset(name, 0, sizeof(name));
1771 if (copy_from_user(name, &user_buffer[i], len))
1772 return -EFAULT;
1773 i += len;
d50a6b56 1774
222f1806 1775 max = count - i;
1da177e4 1776 len = count_trail_chars(&user_buffer[i], max);
222f1806 1777 if (len < 0)
d50a6b56
SH		 1778 return len;
1779
1da177e4
LT		 1780 i += len;
1781
d50a6b56 1782 if (debug)
25a8b254
DM		 1783 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1784 name, (unsigned long)count);
1da177e4 1785
222f1806 1786 if (!t) {
f9467eae 1787 pr_err("ERROR: No thread\n");
1da177e4
LT		 1788 ret = -EINVAL;
1789 goto out;
1790 }
1791
1792 pg_result = &(t->result[0]);
1793
222f1806
LC		 1794 if (!strcmp(name, "add_device")) {
1795 char f[32];
1796 memset(f, 0, 32);
1da177e4 1797 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1798 if (len < 0) {
1799 ret = len;
1da177e4
LT		 1800 goto out;
1801 }
222f1806 1802 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1803 return -EFAULT;
1804 i += len;
6146e6a4 1805 mutex_lock(&pktgen_thread_lock);
222f1806 1806 pktgen_add_device(t, f);
6146e6a4 1807 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1808 ret = count;
1809 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1810 goto out;
1811 }
1812
222f1806 1813 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1814 mutex_lock(&pktgen_thread_lock);
95ed63f7 1815 t->control |= T_REMDEVALL;
6146e6a4 1816 mutex_unlock(&pktgen_thread_lock);
222f1806 1817 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1818 ret = count;
222f1806 1819 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1820 goto out;
1821 }
1822
222f1806 1823 if (!strcmp(name, "max_before_softirq")) {
b163911f 1824 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1825 ret = count;
1da177e4
LT		 1826 goto out;
1827 }
1828
1829 ret = -EINVAL;
222f1806 1830out:
1da177e4
LT		 1831 return ret;
1832}
1833
d50a6b56 1834static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1835{
d50a6b56 1836 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1837}
1838
9a32144e 1839static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1840 .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,
d50a6b56 1846};
1da177e4
LT		 1847
1848/* Think find or remove for NN */
222f1806 1849static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1850{
1851 struct pktgen_thread *t;
1852 struct pktgen_dev *pkt_dev = NULL;
3e984840 1853 bool exact = (remove == FIND);
1da177e4 1854
cdcdbe0b 1855 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1856 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1857 if (pkt_dev) {
222f1806
LC		 1858 if (remove) {
1859 if_lock(t);
1860 pkt_dev->removal_mark = 1;
1861 t->control |= T_REMDEV;
1862 if_unlock(t);
1863 }
1da177e4
LT		 1864 break;
1865 }
1da177e4 1866 }
222f1806 1867 return pkt_dev;
1da177e4
LT		 1868}
1869
95ed63f7
AK		 1870/*
1871 * mark a device for removal
1872 */
39df232f 1873static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1874{
1875 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1876 const int max_tries = 10, msec_per_try = 125;
1877 int i = 0;
95ed63f7 1878
6146e6a4 1879 mutex_lock(&pktgen_thread_lock);
f9467eae 1880 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1881
222f1806 1882 while (1) {
95ed63f7
AK		 1883
1884 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1885 if (pkt_dev == NULL)
1886 break; /* success */
95ed63f7 1887
6146e6a4 1888 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1889 pr_debug("%s: waiting for %s to disappear....\n",
1890 __func__, ifname);
95ed63f7 1891 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1892 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1893
1894 if (++i >= max_tries) {
f9467eae
JP		 1895 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1896 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1897 break;
1898 }
1899
1900 }
1901
6146e6a4 1902 mutex_unlock(&pktgen_thread_lock);
39df232f 1903}
95ed63f7 1904
39df232f
SH		 1905static 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
2975315b
AD		 1918 pkt_dev->entry = proc_create_data(dev->name, 0600,
1919 pg_proc_dir,
1920 &pktgen_if_fops,
1921 pkt_dev);
39df232f 1922 if (!pkt_dev->entry)
f9467eae
JP		 1923 pr_err("can't move proc entry for '%s'\n",
1924 dev->name);
39df232f
SH		 1925 break;
1926 }
1927 }
1da177e4
LT		 1928}
1929
222f1806
LC		 1930static int pktgen_device_event(struct notifier_block *unused,
1931 unsigned long event, void *ptr)
1da177e4 1932{
39df232f 1933 struct net_device *dev = ptr;
1da177e4 1934
721499e8 1935 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1936 return NOTIFY_DONE;
1937
1da177e4
LT		 1938 /* 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) {
39df232f
SH		 1943 case NETDEV_CHANGENAME:
1944 pktgen_change_name(dev);
1da177e4 1945 break;
222f1806 1946
1da177e4 1947 case NETDEV_UNREGISTER:
222f1806 1948 pktgen_mark_device(dev->name);
1da177e4 1949 break;
3ff50b79 1950 }
1da177e4
LT		 1951
1952 return NOTIFY_DONE;
1953}
1954
63adc6fb
SH		 1955static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1956 const char *ifname)
e6fce5b9
RO		 1957{
1958 char b[IFNAMSIZ+5];
d6182223 1959 int i;
e6fce5b9 1960
63adc6fb
SH		 1961 for (i = 0; ifname[i] != '@'; i++) {
1962 if (i == IFNAMSIZ)
e6fce5b9
RO		 1963 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
1da177e4
LT		 1973/* Associate pktgen_dev with a device. */
1974
39df232f 1975static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1976{
1da177e4 1977 struct net_device *odev;
39df232f 1978 int err;
1da177e4
LT		 1979
1980 /* Clean old setups */
1da177e4
LT		 1981 if (pkt_dev->odev) {
1982 dev_put(pkt_dev->odev);
222f1806
LC		 1983 pkt_dev->odev = NULL;
1984 }
1da177e4 1985
e6fce5b9 1986 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1987 if (!odev) {
f9467eae 1988 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1989 return -ENODEV;
1da177e4 1990 }
39df232f 1991
1da177e4 1992 if (odev->type != ARPHRD_ETHER) {
f9467eae 1993 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1994 err = -EINVAL;
1995 } else if (!netif_running(odev)) {
f9467eae 1996 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 1997 err = -ENETDOWN;
1998 } else {
1999 pkt_dev->odev = odev;
2000 return 0;
1da177e4 2001 }
1da177e4 2002
1da177e4 2003 dev_put(odev);
39df232f 2004 return err;
1da177e4
LT		 2005}
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{
64c00d81
AG		 2012 int ntxq;
2013
222f1806 2014 if (!pkt_dev->odev) {
f9467eae 2015 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2016 sprintf(pkt_dev->result,
2017 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2018 return;
2019 }
2020
64c00d81
AG		 2021 /* make sure that we don't pick a non-existing transmit queue */
2022 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2023
64c00d81 2024 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2025 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);
64c00d81
AG		 2028 pkt_dev->queue_map_min = ntxq - 1;
2029 }
88271660 2030 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2031 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);
64c00d81
AG		 2034 pkt_dev->queue_map_max = ntxq - 1;
2035 }
2036
222f1806 2037 /* Default to the interface's mac if not explicitly set. */
1da177e4 2038
f404e9a6 2039 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2040 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2041
222f1806 2042 /* Set up Dest MAC */
f404e9a6 2043 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2044
222f1806
LC		 2045 /* Set up pkt size */
2046 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2047
2048 if (pkt_dev->flags & F_IPV6) {
1da177e4 2049 /*
4ec93edb 2050 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2051 * gets exported
2052 */
2053
2054#ifdef NOTNOW
222f1806 2055 int i, set = 0, err = 1;
1da177e4
LT		 2056 struct inet6_dev *idev;
2057
222f1806
LC		 2058 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2059 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2060 set = 1;
2061 break;
2062 }
2063
222f1806
LC		 2064 if (!set) {
2065
1da177e4
LT		 2066 /*
2067 * Use linklevel address if unconfigured.
2068 *
2069 * use ipv6_get_lladdr if/when it's get exported
2070 */
2071
8814c4b5 2072 rcu_read_lock();
63adc6fb
SH		 2073 idev = __in6_dev_get(pkt_dev->odev);
2074 if (idev) {
1da177e4
LT		 2075 struct inet6_ifaddr *ifp;
2076
2077 read_lock_bh(&idev->lock);
222f1806
LC		 2078 for (ifp = idev->addr_list; ifp;
2079 ifp = ifp->if_next) {
f64f9e71
JP		 2080 if (ifp->scope == IFA_LINK &&
2081 !(ifp->flags & IFA_F_TENTATIVE)) {
222f1806
LC		 2082 ipv6_addr_copy(&pkt_dev->
2083 cur_in6_saddr,
2084 &ifp->addr);
1da177e4
LT		 2085 err = 0;
2086 break;
2087 }
2088 }
2089 read_unlock_bh(&idev->lock);
2090 }
8814c4b5 2091 rcu_read_unlock();
222f1806 2092 if (err)
f9467eae 2093 pr_err("ERROR: IPv6 link address not available\n");
1da177e4
LT		 2094 }
2095#endif
222f1806 2096 } else {
1da177e4
LT		 2097 pkt_dev->saddr_min = 0;
2098 pkt_dev->saddr_max = 0;
2099 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2100
2101 struct in_device *in_dev;
1da177e4
LT		 2102
2103 rcu_read_lock();
e5ed6399 2104 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2105 if (in_dev) {
2106 if (in_dev->ifa_list) {
222f1806
LC		 2107 pkt_dev->saddr_min =
2108 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2109 pkt_dev->saddr_max = pkt_dev->saddr_min;
2110 }
1da177e4
LT		 2111 }
2112 rcu_read_unlock();
222f1806 2113 } else {
1da177e4
LT		 2114 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 }
222f1806
LC		 2121 /* 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;
1da177e4
LT		 2128 pkt_dev->nflows = 0;
2129}
2130
fd29cf72
SH		 2131
2132static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2133{
ef87979c 2134 ktime_t start_time, end_time;
417bc4b8 2135 s64 remaining;
2bc481cf
SH		 2136 struct hrtimer_sleeper t;
2137
2138 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2139 hrtimer_set_expires(&t.timer, spin_until);
2140
43d28b65 2141 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2142 if (remaining <= 0) {
2143 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2144 return;
417bc4b8 2145 }
2bc481cf 2146
ef87979c 2147 start_time = ktime_now();
43d28b65
DT		 2148 if (remaining < 100000)
2149 ndelay(remaining); /* really small just spin */
2bc481cf
SH		 2150 else {
2151 /* see do_nanosleep */
2152 hrtimer_init_sleeper(&t, current);
2153 do {
2154 set_current_state(TASK_INTERRUPTIBLE);
2155 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2156 if (!hrtimer_active(&t.timer))
2157 t.task = NULL;
2158
2159 if (likely(t.task))
1da177e4 2160 schedule();
1da177e4 2161
2bc481cf
SH		 2162 hrtimer_cancel(&t.timer);
2163 } while (t.task && pkt_dev->running && !signal_pending(current));
2164 __set_current_state(TASK_RUNNING);
1da177e4 2165 }
ef87979c
SH		 2166 end_time = ktime_now();
2167
2168 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2169 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2170}
2171
16dab72f
JHS		 2172static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2173{
a553e4a6 2174 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2175 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2176 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2177 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2178}
2179
648fda74 2180static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2181{
648fda74 2182 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2183}
2184
2185static inline int f_pick(struct pktgen_dev *pkt_dev)
2186{
2187 int flow = pkt_dev->curfl;
2188
2189 if (pkt_dev->flags & F_FLOW_SEQ) {
2190 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2191 /* reset time */
2192 pkt_dev->flows[flow].count = 0;
1211a645 2193 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2194 pkt_dev->curfl += 1;
2195 if (pkt_dev->curfl >= pkt_dev->cflows)
2196 pkt_dev->curfl = 0; /*reset */
2197 }
2198 } else {
2199 flow = random32() % pkt_dev->cflows;
1211a645 2200 pkt_dev->curfl = flow;
007a531b 2201
1211a645 2202 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2203 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2204 pkt_dev->flows[flow].flags = 0;
2205 }
007a531b
JHS		 2206 }
2207
2208 return pkt_dev->curfl;
2209}
2210
a553e4a6
JHS		 2211
2212#ifdef CONFIG_XFRM
2213/* If there was already an IPSEC SA, we keep it as is, else
2214 * we go look for it ...
2215*/
bd55775c 2216#define DUMMY_MARK 0
fea1ab0f 2217static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2218{
2219 struct xfrm_state *x = pkt_dev->flows[flow].x;
2220 if (!x) {
2221 /*slow path: we dont already have xfrm_state*/
bd55775c 2222 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2223 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2224 (xfrm_address_t *)&pkt_dev->cur_saddr,
2225 AF_INET,
2226 pkt_dev->ipsmode,
2227 pkt_dev->ipsproto, 0);
2228 if (x) {
2229 pkt_dev->flows[flow].x = x;
2230 set_pkt_overhead(pkt_dev);
63adc6fb 2231 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2232 }
2233
2234 }
2235}
2236#endif
fd2ea0a7
DM		 2237static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2238{
e6fce5b9
RO		 2239
2240 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2241 pkt_dev->cur_queue_map = smp_processor_id();
2242
896a7cf8 2243 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2244 __u16 t;
2245 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2246 t = random32() %
2247 (pkt_dev->queue_map_max -
2248 pkt_dev->queue_map_min + 1)
2249 + pkt_dev->queue_map_min;
2250 } else {
2251 t = pkt_dev->cur_queue_map + 1;
2252 if (t > pkt_dev->queue_map_max)
2253 t = pkt_dev->queue_map_min;
2254 }
2255 pkt_dev->cur_queue_map = t;
2256 }
bfdbc0ac 2257 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2258}
2259
1da177e4
LT		 2260/* Increment/randomize headers according to flags and current values
2261 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2262 */
222f1806
LC		 2263static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2264{
2265 __u32 imn;
2266 __u32 imx;
2267 int flow = 0;
1da177e4 2268
007a531b
JHS		 2269 if (pkt_dev->cflows)
2270 flow = f_pick(pkt_dev);
1da177e4
LT		 2271
2272 /* Deal with source MAC */
222f1806
LC		 2273 if (pkt_dev->src_mac_count > 1) {
2274 __u32 mc;
2275 __u32 tmp;
2276
2277 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2278 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2279 else {
2280 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2281 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2282 pkt_dev->src_mac_count)
2283 pkt_dev->cur_src_mac_offset = 0;
2284 }
2285
2286 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2287 pkt_dev->hh[11] = tmp;
2288 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2289 pkt_dev->hh[10] = tmp;
2290 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2291 pkt_dev->hh[9] = tmp;
2292 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2293 pkt_dev->hh[8] = tmp;
2294 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2295 pkt_dev->hh[7] = tmp;
2296 }
2297
2298 /* Deal with Destination MAC */
2299 if (pkt_dev->dst_mac_count > 1) {
2300 __u32 mc;
2301 __u32 tmp;
2302
2303 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2304 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2305
2306 else {
2307 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2308 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2309 pkt_dev->dst_mac_count) {
2310 pkt_dev->cur_dst_mac_offset = 0;
2311 }
2312 }
2313
2314 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2315 pkt_dev->hh[5] = tmp;
2316 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2317 pkt_dev->hh[4] = tmp;
2318 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2319 pkt_dev->hh[3] = tmp;
2320 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2321 pkt_dev->hh[2] = tmp;
2322 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2323 pkt_dev->hh[1] = tmp;
2324 }
2325
ca6549af
SW		 2326 if (pkt_dev->flags & F_MPLS_RND) {
2327 unsigned i;
e71a4783 2328 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2329 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2330 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2331 ((__force __be32)random32() &
ca6549af
SW		 2332 htonl(0x000fffff));
2333 }
2334
34954ddc 2335 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2336 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2337 }
2338
2339 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2340 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2341 }
2342
222f1806
LC		 2343 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2344 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2345 pkt_dev->cur_udp_src = random32() %
2346 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2347 + pkt_dev->udp_src_min;
222f1806
LC		 2348
2349 else {
1da177e4
LT		 2350 pkt_dev->cur_udp_src++;
2351 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2352 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2353 }
2354 }
2355
2356 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2357 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2358 pkt_dev->cur_udp_dst = random32() %
2359 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2360 + pkt_dev->udp_dst_min;
222f1806 2361 } else {
1da177e4 2362 pkt_dev->cur_udp_dst++;
222f1806 2363 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2364 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2365 }
2366 }
1da177e4
LT		 2367
2368 if (!(pkt_dev->flags & F_IPV6)) {
2369
63adc6fb
SH		 2370 imn = ntohl(pkt_dev->saddr_min);
2371 imx = ntohl(pkt_dev->saddr_max);
2372 if (imn < imx) {
1da177e4 2373 __u32 t;
222f1806 2374 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2375 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2376 else {
2377 t = ntohl(pkt_dev->cur_saddr);
2378 t++;
63adc6fb 2379 if (t > imx)
1da177e4 2380 t = imn;
63adc6fb 2381
1da177e4
LT		 2382 }
2383 pkt_dev->cur_saddr = htonl(t);
2384 }
222f1806 2385
007a531b 2386 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2387 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2388 } else {
252e3346
AV		 2389 imn = ntohl(pkt_dev->daddr_min);
2390 imx = ntohl(pkt_dev->daddr_max);
2391 if (imn < imx) {
1da177e4 2392 __u32 t;
252e3346 2393 __be32 s;
1da177e4
LT		 2394 if (pkt_dev->flags & F_IPDST_RND) {
2395
5fa6fc76 2396 t = random32() % (imx - imn) + imn;
252e3346 2397 s = htonl(t);
1da177e4 2398
21cf2253
JP		 2399 while (ipv4_is_loopback(s) ||
2400 ipv4_is_multicast(s) ||
1e637c74 2401 ipv4_is_lbcast(s) ||
21cf2253
JP		 2402 ipv4_is_zeronet(s) ||
2403 ipv4_is_local_multicast(s)) {
5fa6fc76 2404 t = random32() % (imx - imn) + imn;
252e3346 2405 s = htonl(t);
1da177e4 2406 }
252e3346
AV		 2407 pkt_dev->cur_daddr = s;
2408 } else {
1da177e4
LT		 2409 t = ntohl(pkt_dev->cur_daddr);
2410 t++;
2411 if (t > imx) {
2412 t = imn;
2413 }
2414 pkt_dev->cur_daddr = htonl(t);
2415 }
2416 }
222f1806 2417 if (pkt_dev->cflows) {
007a531b 2418 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2419 pkt_dev->flows[flow].cur_daddr =
2420 pkt_dev->cur_daddr;
a553e4a6
JHS		 2421#ifdef CONFIG_XFRM
2422 if (pkt_dev->flags & F_IPSEC_ON)
2423 get_ipsec_sa(pkt_dev, flow);
2424#endif
1da177e4
LT		 2425 pkt_dev->nflows++;
2426 }
2427 }
222f1806
LC		 2428 } else { /* IPV6 * */
2429
2430 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2431 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2432 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2433 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2434 else {
2435 int i;
2436
2437 /* Only random destinations yet */
2438
222f1806 2439 for (i = 0; i < 4; i++) {
1da177e4 2440 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2441 (((__force __be32)random32() |
222f1806
LC		 2442 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2443 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2444 }
222f1806 2445 }
1da177e4
LT		 2446 }
2447
222f1806
LC		 2448 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2449 __u32 t;
2450 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2451 t = random32() %
2452 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2453 + pkt_dev->min_pkt_size;
222f1806 2454 } else {
1da177e4 2455 t = pkt_dev->cur_pkt_size + 1;
222f1806 2456 if (t > pkt_dev->max_pkt_size)
1da177e4 2457 t = pkt_dev->min_pkt_size;
222f1806
LC		 2458 }
2459 pkt_dev->cur_pkt_size = t;
2460 }
1da177e4 2461
fd2ea0a7 2462 set_cur_queue_map(pkt_dev);
45b270f8 2463
1da177e4
LT		 2464 pkt_dev->flows[flow].count++;
2465}
2466
a553e4a6
JHS		 2467
2468#ifdef CONFIG_XFRM
2469static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2470{
2471 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2472 int err = 0;
a553e4a6
JHS		 2473
2474 if (!x)
2475 return 0;
2476 /* XXX: we dont support tunnel mode for now until
2477 * we resolve the dst issue */
2478 if (x->props.mode != XFRM_MODE_TRANSPORT)
2479 return 0;
2480
2481 spin_lock(&x->lock);
a553e4a6 2482
13996378 2483 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2484 if (err)
2485 goto error;
2486 err = x->type->output(x, skb);
2487 if (err)
2488 goto error;
2489
63adc6fb 2490 x->curlft.bytes += skb->len;
a553e4a6 2491 x->curlft.packets++;
a553e4a6
JHS		 2492error:
2493 spin_unlock(&x->lock);
2494 return err;
2495}
2496
475ac1e4 2497static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2498{
2499 if (pkt_dev->cflows) {
2500 /* let go of the SAs if we have them */
d6182223
PG		 2501 int i;
2502 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2503 struct xfrm_state *x = pkt_dev->flows[i].x;
2504 if (x) {
2505 xfrm_state_put(x);
2506 pkt_dev->flows[i].x = NULL;
2507 }
2508 }
2509 }
2510}
2511
475ac1e4 2512static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2513 struct sk_buff *skb, __be16 protocol)
2514{
2515 if (pkt_dev->flags & F_IPSEC_ON) {
2516 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2517 int nhead = 0;
2518 if (x) {
2519 int ret;
2520 __u8 *eth;
2521 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2522 if (nhead > 0) {
a553e4a6
JHS		 2523 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2524 if (ret < 0) {
f9467eae
JP		 2525 pr_err("Error expanding ipsec packet %d\n",
2526 ret);
b4bb4ac8 2527 goto err;
a553e4a6
JHS		 2528 }
2529 }
2530
2531 /* ipsec is not expecting ll header */
2532 skb_pull(skb, ETH_HLEN);
2533 ret = pktgen_output_ipsec(skb, pkt_dev);
2534 if (ret) {
f9467eae 2535 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2536 goto err;
a553e4a6
JHS		 2537 }
2538 /* restore ll */
2539 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2540 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2541 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2542 }
2543 }
2544 return 1;
b4bb4ac8
IJ		 2545err:
2546 kfree_skb(skb);
2547 return 0;
a553e4a6
JHS		 2548}
2549#endif
2550
ca6549af
SW		 2551static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2552{
2553 unsigned i;
63adc6fb 2554 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2555 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2556
ca6549af
SW		 2557 mpls--;
2558 *mpls |= MPLS_STACK_BOTTOM;
2559}
2560
0f37c605
AV		 2561static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2562 unsigned int prio)
2563{
2564 return htons(id | (cfi << 12) | (prio << 13));
2565}
2566
26ad7879
ED		 2567static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2568 int datalen)
2569{
2570 struct timeval timestamp;
2571 struct pktgen_hdr *pgh;
2572
2573 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2574 datalen -= sizeof(*pgh);
2575
2576 if (pkt_dev->nfrags <= 0) {
05aebe2e 2577 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2578 } else {
2579 int frags = pkt_dev->nfrags;
2580 int i, len;
7d36a991 2581 int frag_len;
26ad7879
ED		 2582
2583
2584 if (frags > MAX_SKB_FRAGS)
2585 frags = MAX_SKB_FRAGS;
2586 len = datalen - frags * PAGE_SIZE;
2587 if (len > 0) {
2588 memset(skb_put(skb, len), 0, len);
2589 datalen = frags * PAGE_SIZE;
2590 }
2591
2592 i = 0;
7d36a991 2593 frag_len = (datalen/frags) < PAGE_SIZE ?
2594 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2595 while (datalen > 0) {
2596 if (unlikely(!pkt_dev->page)) {
2597 int node = numa_node_id();
2598
2599 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2600 node = pkt_dev->node;
2601 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2602 if (!pkt_dev->page)
2603 break;
2604 }
ea2ab693 2605 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2606 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2607 /*last fragment, fill rest of data*/
2608 if (i == (frags - 1))
9e903e08
ED		 2609 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2610 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2611 else
9e903e08
ED		 2612 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2613 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2614 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2615 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2616 i++;
2617 skb_shinfo(skb)->nr_frags = i;
2618 }
26ad7879
ED		 2619 }
2620
2621 /* Stamp the time, and sequence number,
2622 * convert them to network byte order
2623 */
2624 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2625 pgh->seq_num = htonl(pkt_dev->seq_num);
2626
2627 do_gettimeofday(&timestamp);
2628 pgh->tv_sec = htonl(timestamp.tv_sec);
2629 pgh->tv_usec = htonl(timestamp.tv_usec);
2630}
2631
222f1806
LC		 2632static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2633 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2634{
2635 struct sk_buff *skb = NULL;
2636 __u8 *eth;
2637 struct udphdr *udph;
2638 int datalen, iplen;
2639 struct iphdr *iph;
d5f1ce9a 2640 __be16 protocol = htons(ETH_P_IP);
ca6549af 2641 __be32 *mpls;
34954ddc
FF		 2642 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2643 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2644 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2645 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2646 u16 queue_map;
ca6549af
SW		 2647
2648 if (pkt_dev->nr_labels)
d5f1ce9a 2649 protocol = htons(ETH_P_MPLS_UC);
222f1806 2650
34954ddc 2651 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2652 protocol = htons(ETH_P_8021Q);
34954ddc 2653
64053bee
RO		 2654 /* Update any of the values, used when we're incrementing various
2655 * fields.
2656 */
2657 mod_cur_headers(pkt_dev);
eb589063 2658 queue_map = pkt_dev->cur_queue_map;
64053bee 2659
7ac5459e 2660 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2661
2662 if (pkt_dev->flags & F_NODE) {
2663 int node;
2664
2665 if (pkt_dev->node >= 0)
2666 node = pkt_dev->node;
2667 else
2668 node = numa_node_id();
2669
2670 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2671 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2672 if (likely(skb)) {
2673 skb_reserve(skb, NET_SKB_PAD);
2674 skb->dev = odev;
2675 }
2676 }
2677 else
2678 skb = __netdev_alloc_skb(odev,
2679 pkt_dev->cur_pkt_size + 64
2680 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2681
1da177e4
LT		 2682 if (!skb) {
2683 sprintf(pkt_dev->result, "No memory");
2684 return NULL;
2685 }
a8d764b9 2686 prefetchw(skb->data);
1da177e4 2687
7ac5459e 2688 skb_reserve(skb, datalen);
1da177e4
LT		 2689
2690 /* Reserve for ethernet and IP header */
2691 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2692 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2693 if (pkt_dev->nr_labels)
2694 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2695
2696 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2697 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2698 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2699 *svlan_tci = build_tci(pkt_dev->svlan_id,
2700 pkt_dev->svlan_cfi,
2701 pkt_dev->svlan_p);
34954ddc 2702 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2703 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2704 }
2705 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2706 *vlan_tci = build_tci(pkt_dev->vlan_id,
2707 pkt_dev->vlan_cfi,
2708 pkt_dev->vlan_p);
34954ddc 2709 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2710 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2711 }
2712
27a884dc 2713 skb->network_header = skb->tail;
b0e380b1 2714 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2715 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2716 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2717 skb->priority = pkt_dev->skb_priority;
2718
ddc7b8e3
ACM		 2719 iph = ip_hdr(skb);
2720 udph = udp_hdr(skb);
1da177e4 2721
1da177e4 2722 memcpy(eth, pkt_dev->hh, 12);
252e3346 2723 *(__be16 *) & eth[12] = protocol;
1da177e4 2724
ca6549af
SW		 2725 /* Eth + IPh + UDPh + mpls */
2726 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2727 pkt_dev->pkt_overhead;
222f1806 2728 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2729 datalen = sizeof(struct pktgen_hdr);
222f1806 2730
1da177e4
LT		 2731 udph->source = htons(pkt_dev->cur_udp_src);
2732 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2733 udph->len = htons(datalen + 8); /* DATA + udphdr */
2734 udph->check = 0; /* No checksum */
1da177e4
LT		 2735
2736 iph->ihl = 5;
2737 iph->version = 4;
2738 iph->ttl = 32;
1ca7768c 2739 iph->tos = pkt_dev->tos;
222f1806 2740 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2741 iph->saddr = pkt_dev->cur_saddr;
2742 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2743 iph->id = htons(pkt_dev->ip_id);
2744 pkt_dev->ip_id++;
1da177e4
LT		 2745 iph->frag_off = 0;
2746 iplen = 20 + 8 + datalen;
2747 iph->tot_len = htons(iplen);
2748 iph->check = 0;
222f1806 2749 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2750 skb->protocol = protocol;
b0e380b1 2751 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2752 pkt_dev->pkt_overhead);
1da177e4
LT		 2753 skb->dev = odev;
2754 skb->pkt_type = PACKET_HOST;
26ad7879 2755 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2756
a553e4a6
JHS		 2757#ifdef CONFIG_XFRM
2758 if (!process_ipsec(pkt_dev, skb, protocol))
2759 return NULL;
2760#endif
2761
1da177e4
LT		 2762 return skb;
2763}
2764
2765/*
4ec93edb 2766 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2767 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2768 *
4ec93edb 2769 * Slightly modified for kernel.
1da177e4
LT		 2770 * Should be candidate for net/ipv4/utils.c
2771 * --ro
2772 */
2773
222f1806 2774static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2775{
2776 unsigned int i;
222f1806 2777 unsigned int len = 0;
1da177e4
LT		 2778 unsigned long u;
2779 char suffix[16];
222f1806
LC		 2780 unsigned int prefixlen = 0;
2781 unsigned int suffixlen = 0;
252e3346 2782 __be32 tmp;
cfcabdcc 2783 char *pos;
1da177e4 2784
222f1806
LC		 2785 for (i = 0; i < 16; i++)
2786 ip[i] = 0;
1da177e4
LT		 2787
2788 for (;;) {
2789 if (*s == ':') {
2790 len++;
222f1806
LC		 2791 if (s[1] == ':') { /* Found "::", skip to part 2 */
2792 s += 2;
1da177e4
LT		 2793 len++;
2794 break;
2795 }
2796 s++;
2797 }
1da177e4 2798
cfcabdcc
SH		 2799 u = simple_strtoul(s, &pos, 16);
2800 i = pos - s;
222f1806
LC		 2801 if (!i)
2802 return 0;
2803 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2804
2805 /* the last 4 bytes may be written as IPv4 address */
2806
2807 tmp = in_aton(s);
222f1806
LC		 2808 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2809 return i + len;
1da177e4
LT		 2810 }
2811 ip[prefixlen++] = (u >> 8);
2812 ip[prefixlen++] = (u & 255);
222f1806
LC		 2813 s += i;
2814 len += i;
2815 if (prefixlen == 16)
1da177e4
LT		 2816 return len;
2817 }
2818
2819/* part 2, after "::" */
2820 for (;;) {
2821 if (*s == ':') {
222f1806 2822 if (suffixlen == 0)
1da177e4
LT		 2823 break;
2824 s++;
2825 len++;
222f1806 2826 } else if (suffixlen != 0)
1da177e4 2827 break;
cfcabdcc
SH		 2828
2829 u = simple_strtol(s, &pos, 16);
2830 i = pos - s;
1da177e4 2831 if (!i) {
222f1806
LC		 2832 if (*s)
2833 len--;
1da177e4
LT		 2834 break;
2835 }
222f1806 2836 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2837 tmp = in_aton(s);
222f1806
LC		 2838 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2839 sizeof(tmp));
2840 suffixlen += 4;
2841 len += strlen(s);
1da177e4
LT		 2842 break;
2843 }
2844 suffix[suffixlen++] = (u >> 8);
2845 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2846 s += i;
2847 len += i;
2848 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2849 break;
2850 }
222f1806
LC		 2851 for (i = 0; i < suffixlen; i++)
2852 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2853 return len;
2854}
2855
222f1806
LC		 2856static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2857 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2858{
2859 struct sk_buff *skb = NULL;
2860 __u8 *eth;
2861 struct udphdr *udph;
2862 int datalen;
2863 struct ipv6hdr *iph;
d5f1ce9a 2864 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2865 __be32 *mpls;
34954ddc
FF		 2866 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2867 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2868 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2869 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2870 u16 queue_map;
ca6549af
SW		 2871
2872 if (pkt_dev->nr_labels)
d5f1ce9a 2873 protocol = htons(ETH_P_MPLS_UC);
64053bee 2874
34954ddc 2875 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2876 protocol = htons(ETH_P_8021Q);
34954ddc 2877
64053bee
RO		 2878 /* Update any of the values, used when we're incrementing various
2879 * fields.
2880 */
2881 mod_cur_headers(pkt_dev);
eb589063 2882 queue_map = pkt_dev->cur_queue_map;
64053bee 2883
e470757d
SH		 2884 skb = __netdev_alloc_skb(odev,
2885 pkt_dev->cur_pkt_size + 64
2886 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2887 if (!skb) {
2888 sprintf(pkt_dev->result, "No memory");
2889 return NULL;
2890 }
a8d764b9 2891 prefetchw(skb->data);
1da177e4
LT		 2892
2893 skb_reserve(skb, 16);
2894
2895 /* Reserve for ethernet and IP header */
2896 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2897 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2898 if (pkt_dev->nr_labels)
2899 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2900
2901 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2902 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2903 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2904 *svlan_tci = build_tci(pkt_dev->svlan_id,
2905 pkt_dev->svlan_cfi,
2906 pkt_dev->svlan_p);
34954ddc 2907 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2908 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2909 }
2910 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2911 *vlan_tci = build_tci(pkt_dev->vlan_id,
2912 pkt_dev->vlan_cfi,
2913 pkt_dev->vlan_p);
34954ddc 2914 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2915 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2916 }
2917
27a884dc 2918 skb->network_header = skb->tail;
b0e380b1 2919 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2920 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2921 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2922 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 2923 iph = ipv6_hdr(skb);
2924 udph = udp_hdr(skb);
1da177e4 2925
1da177e4 2926 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2927 *(__be16 *) &eth[12] = protocol;
64053bee 2928
ca6549af
SW		 2929 /* Eth + IPh + UDPh + mpls */
2930 datalen = pkt_dev->cur_pkt_size - 14 -
2931 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2932 pkt_dev->pkt_overhead;
1da177e4 2933
222f1806 2934 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2935 datalen = sizeof(struct pktgen_hdr);
2936 if (net_ratelimit())
f9467eae 2937 pr_info("increased datalen to %d\n", datalen);
1da177e4
LT		 2938 }
2939
2940 udph->source = htons(pkt_dev->cur_udp_src);
2941 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2942 udph->len = htons(datalen + sizeof(struct udphdr));
2943 udph->check = 0; /* No checksum */
1da177e4 2944
d5f1ce9a 2945 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2946
1ca7768c
FF		 2947 if (pkt_dev->traffic_class) {
2948 /* Version + traffic class + flow (0) */
252e3346 2949 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2950 }
2951
1da177e4
LT		 2952 iph->hop_limit = 32;
2953
2954 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2955 iph->nexthdr = IPPROTO_UDP;
2956
2957 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
2958 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
2959
b0e380b1 2960 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2961 pkt_dev->pkt_overhead);
ca6549af 2962 skb->protocol = protocol;
1da177e4
LT		 2963 skb->dev = odev;
2964 skb->pkt_type = PACKET_HOST;
2965
26ad7879 2966 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2967
1da177e4
LT		 2968 return skb;
2969}
2970
475ac1e4
SH		 2971static struct sk_buff *fill_packet(struct net_device *odev,
2972 struct pktgen_dev *pkt_dev)
1da177e4 2973{
222f1806 2974 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2975 return fill_packet_ipv6(odev, pkt_dev);
2976 else
2977 return fill_packet_ipv4(odev, pkt_dev);
2978}
2979
222f1806 2980static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2981{
222f1806
LC		 2982 pkt_dev->seq_num = 1;
2983 pkt_dev->idle_acc = 0;
1da177e4 2984 pkt_dev->sofar = 0;
222f1806
LC		 2985 pkt_dev->tx_bytes = 0;
2986 pkt_dev->errors = 0;
1da177e4
LT		 2987}
2988
2989/* Set up structure for sending pkts, clear counters */
2990
2991static void pktgen_run(struct pktgen_thread *t)
2992{
c26a8016 2993 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2994 int started = 0;
2995
f9467eae 2996 func_enter();
1da177e4
LT		 2997
2998 if_lock(t);
c26a8016 2999 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3000
3001 /*
3002 * setup odev and create initial packet.
3003 */
3004 pktgen_setup_inject(pkt_dev);
3005
222f1806 3006 if (pkt_dev->odev) {
1da177e4 3007 pktgen_clear_counters(pkt_dev);
222f1806 3008 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3009 pkt_dev->skb = NULL;
fd29cf72
SH		 3010 pkt_dev->started_at =
3011 pkt_dev->next_tx = ktime_now();
3012
16dab72f 3013 set_pkt_overhead(pkt_dev);
222f1806 3014
1da177e4
LT		 3015 strcpy(pkt_dev->result, "Starting");
3016 started++;
222f1806 3017 } else
1da177e4
LT		 3018 strcpy(pkt_dev->result, "Error starting");
3019 }
3020 if_unlock(t);
222f1806
LC		 3021 if (started)
3022 t->control &= ~(T_STOP);
1da177e4
LT		 3023}
3024
3025static void pktgen_stop_all_threads_ifs(void)
3026{
cdcdbe0b 3027 struct pktgen_thread *t;
1da177e4 3028
f9467eae 3029 func_enter();
1da177e4 3030
6146e6a4 3031 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3032
3033 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3034 t->control |= T_STOP;
cdcdbe0b 3035
6146e6a4 3036 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3037}
3038
648fda74 3039static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3040{
648fda74 3041 const struct pktgen_dev *pkt_dev;
1da177e4 3042
c26a8016 3043 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3044 if (pkt_dev->running)
3045 return 1;
3046 return 0;
1da177e4
LT		 3047}
3048
222f1806 3049static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3050{
222f1806 3051 if_lock(t);
1da177e4 3052
222f1806 3053 while (thread_is_running(t)) {
1da177e4 3054
222f1806 3055 if_unlock(t);
1da177e4 3056
222f1806 3057 msleep_interruptible(100);
1da177e4 3058
222f1806
LC		 3059 if (signal_pending(current))
3060 goto signal;
3061 if_lock(t);
3062 }
3063 if_unlock(t);
3064 return 1;
3065signal:
3066 return 0;
1da177e4
LT		 3067}
3068
3069static int pktgen_wait_all_threads_run(void)
3070{
cdcdbe0b 3071 struct pktgen_thread *t;
1da177e4 3072 int sig = 1;
222f1806 3073
6146e6a4 3074 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3075
3076 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3077 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3078 if (sig == 0)
3079 break;
1da177e4 3080 }
cdcdbe0b
LC		 3081
3082 if (sig == 0)
3083 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3084 t->control |= (T_STOP);
cdcdbe0b 3085
6146e6a4 3086 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3087 return sig;
3088}
3089
3090static void pktgen_run_all_threads(void)
3091{
cdcdbe0b 3092 struct pktgen_thread *t;
1da177e4 3093
f9467eae 3094 func_enter();
1da177e4 3095
6146e6a4 3096 mutex_lock(&pktgen_thread_lock);
1da177e4 3097
cdcdbe0b 3098 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3099 t->control |= (T_RUN);
cdcdbe0b 3100
6146e6a4 3101 mutex_unlock(&pktgen_thread_lock);
1da177e4 3102
63adc6fb
SH		 3103 /* Propagate thread->control */
3104 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3105
1da177e4
LT		 3106 pktgen_wait_all_threads_run();
3107}
3108
eb37b41c
JB		 3109static void pktgen_reset_all_threads(void)
3110{
3111 struct pktgen_thread *t;
3112
f9467eae 3113 func_enter();
eb37b41c
JB		 3114
3115 mutex_lock(&pktgen_thread_lock);
3116
3117 list_for_each_entry(t, &pktgen_threads, th_list)
3118 t->control |= (T_REMDEVALL);
3119
3120 mutex_unlock(&pktgen_thread_lock);
3121
63adc6fb
SH		 3122 /* Propagate thread->control */
3123 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3124
3125 pktgen_wait_all_threads_run();
3126}
3127
1da177e4
LT		 3128static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3129{
fd29cf72 3130 __u64 bps, mbps, pps;
222f1806 3131 char *p = pkt_dev->result;
fd29cf72
SH		 3132 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3133 pkt_dev->started_at);
3134 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3135
03a14ab1 3136 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3137 (unsigned long long)ktime_to_us(elapsed),
3138 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3139 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3140 (unsigned long long)pkt_dev->sofar,
3141 pkt_dev->cur_pkt_size, nr_frags);
3142
fd29cf72
SH		 3143 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3144 ktime_to_ns(elapsed));
222f1806
LC		 3145
3146 bps = pps * 8 * pkt_dev->cur_pkt_size;
3147
3148 mbps = bps;
3149 do_div(mbps, 1000000);
3150 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3151 (unsigned long long)pps,
3152 (unsigned long long)mbps,
3153 (unsigned long long)bps,
3154 (unsigned long long)pkt_dev->errors);
1da177e4 3155}
1da177e4
LT		 3156
3157/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3158static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3159{
222f1806 3160 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3161
222f1806 3162 if (!pkt_dev->running) {
f9467eae
JP		 3163 pr_warning("interface: %s is already stopped\n",
3164 pkt_dev->odevname);
222f1806
LC		 3165 return -EINVAL;
3166 }
1da177e4 3167
3bda06a3
SH		 3168 kfree_skb(pkt_dev->skb);
3169 pkt_dev->skb = NULL;
fd29cf72 3170 pkt_dev->stopped_at = ktime_now();
222f1806 3171 pkt_dev->running = 0;
1da177e4 3172
95ed63f7 3173 show_results(pkt_dev, nr_frags);
1da177e4 3174
222f1806 3175 return 0;
1da177e4
LT		 3176}
3177
222f1806 3178static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3179{
c26a8016 3180 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3181
1da177e4
LT		 3182 if_lock(t);
3183
c26a8016
LC		 3184 list_for_each_entry(pkt_dev, &t->if_list, list) {
3185 if (!pkt_dev->running)
222f1806
LC		 3186 continue;
3187 if (best == NULL)
c26a8016 3188 best = pkt_dev;
fd29cf72 3189 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3190 best = pkt_dev;
1da177e4
LT		 3191 }
3192 if_unlock(t);
222f1806 3193 return best;
1da177e4
LT		 3194}
3195
222f1806
LC		 3196static void pktgen_stop(struct pktgen_thread *t)
3197{
c26a8016 3198 struct pktgen_dev *pkt_dev;
1da177e4 3199
f9467eae 3200 func_enter();
1da177e4 3201
222f1806 3202 if_lock(t);
1da177e4 3203
c26a8016
LC		 3204 list_for_each_entry(pkt_dev, &t->if_list, list) {
3205 pktgen_stop_device(pkt_dev);
95ed63f7 3206 }
1da177e4 3207
222f1806 3208 if_unlock(t);
1da177e4
LT		 3209}
3210
95ed63f7
AK		 3211/*
3212 * one of our devices needs to be removed - find it
3213 * and remove it
3214 */
3215static void pktgen_rem_one_if(struct pktgen_thread *t)
3216{
c26a8016
LC		 3217 struct list_head *q, *n;
3218 struct pktgen_dev *cur;
95ed63f7 3219
f9467eae 3220 func_enter();
95ed63f7
AK		 3221
3222 if_lock(t);
3223
c26a8016
LC		 3224 list_for_each_safe(q, n, &t->if_list) {
3225 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3226
222f1806
LC		 3227 if (!cur->removal_mark)
3228 continue;
95ed63f7 3229
86dc1ad2 3230 kfree_skb(cur->skb);
95ed63f7
AK		 3231 cur->skb = NULL;
3232
3233 pktgen_remove_device(t, cur);
3234
3235 break;
3236 }
3237
3238 if_unlock(t);
3239}
3240
222f1806 3241static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3242{
c26a8016
LC		 3243 struct list_head *q, *n;
3244 struct pktgen_dev *cur;
222f1806 3245
f9467eae
JP		 3246 func_enter();
3247
222f1806 3248 /* Remove all devices, free mem */
95ed63f7 3249
222f1806 3250 if_lock(t);
1da177e4 3251
c26a8016
LC		 3252 list_for_each_safe(q, n, &t->if_list) {
3253 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3254
86dc1ad2 3255 kfree_skb(cur->skb);
95ed63f7
AK		 3256 cur->skb = NULL;
3257
1da177e4
LT		 3258 pktgen_remove_device(t, cur);
3259 }
3260
222f1806 3261 if_unlock(t);
1da177e4
LT		 3262}
3263
222f1806 3264static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3265{
222f1806 3266 /* Remove from the thread list */
1da177e4 3267
ee74baa7 3268 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3269
1da177e4
LT		 3270}
3271
ef87979c 3272static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3273{
fd29cf72 3274 ktime_t idle_start = ktime_now();
ef87979c
SH		 3275 schedule();
3276 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3277}
3791decb 3278
ef87979c
SH		 3279static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3280{
3281 ktime_t idle_start = ktime_now();
3791decb 3282
ef87979c
SH		 3283 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3284 if (signal_pending(current))
3285 break;
3286
3287 if (need_resched())
3288 pktgen_resched(pkt_dev);
3289 else
3290 cpu_relax();
3291 }
fd29cf72 3292 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3293}
3294
475ac1e4 3295static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3296{
00829823 3297 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3298 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3299 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3300 struct netdev_queue *txq;
fd2ea0a7 3301 u16 queue_map;
1da177e4
LT		 3302 int ret;
3303
ef87979c
SH		 3304 /* If device is offline, then don't send */
3305 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3306 pktgen_stop_device(pkt_dev);
3307 return;
fd2ea0a7
DM		 3308 }
3309
ef87979c
SH		 3310 /* This is max DELAY, this has special meaning of
3311 * "never transmit"
3312 */
3313 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3314 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3315 return;
1da177e4 3316 }
222f1806 3317
ef87979c 3318 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3319 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3320 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3321 /* build a new pkt */
3322 kfree_skb(pkt_dev->skb);
3323
3324 pkt_dev->skb = fill_packet(odev, pkt_dev);
3325 if (pkt_dev->skb == NULL) {
f9467eae 3326 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3327 schedule();
3328 pkt_dev->clone_count--; /* back out increment, OOM */
3329 return;
1da177e4 3330 }
baac8564 3331 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3332 pkt_dev->allocated_skbs++;
3333 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3334 }
95ed63f7 3335
ef87979c
SH		 3336 if (pkt_dev->delay && pkt_dev->last_ok)
3337 spin(pkt_dev, pkt_dev->next_tx);
3338
fd2ea0a7
DM		 3339 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3340 txq = netdev_get_tx_queue(odev, queue_map);
3341
3342 __netif_tx_lock_bh(txq);
5b8db2f5 3343
5a0d2268 3344 if (unlikely(netif_tx_queue_frozen_or_stopped(txq))) {
ef87979c 3345 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3346 pkt_dev->last_ok = 0;
3347 goto unlock;
3348 }
3349 atomic_inc(&(pkt_dev->skb->users));
3350 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3351
3352 switch (ret) {
3353 case NETDEV_TX_OK:
3354 txq_trans_update(txq);
3355 pkt_dev->last_ok = 1;
3356 pkt_dev->sofar++;
3357 pkt_dev->seq_num++;
baac8564 3358 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3359 break;
f466dba1
JF		 3360 case NET_XMIT_DROP:
3361 case NET_XMIT_CN:
3362 case NET_XMIT_POLICED:
3363 /* skb has been consumed */
3364 pkt_dev->errors++;
3365 break;
ef87979c
SH		 3366 default: /* Drivers are not supposed to return other values! */
3367 if (net_ratelimit())
58231186 3368 pr_info("%s xmit error: %d\n", pkt_dev->odevname, ret);
ef87979c
SH		 3369 pkt_dev->errors++;
3370 /* fallthru */
3371 case NETDEV_TX_LOCKED:
3372 case NETDEV_TX_BUSY:
3373 /* Retry it next time */
3374 atomic_dec(&(pkt_dev->skb->users));
3375 pkt_dev->last_ok = 0;
222f1806 3376 }
0835acfe 3377unlock:
fd2ea0a7 3378 __netif_tx_unlock_bh(txq);
222f1806 3379
1da177e4
LT		 3380 /* If pkt_dev->count is zero, then run forever */
3381 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3382 pktgen_wait_for_skb(pkt_dev);
222f1806 3383
1da177e4
LT		 3384 /* Done with this */
3385 pktgen_stop_device(pkt_dev);
222f1806 3386 }
222f1806 3387}
1da177e4 3388
4ec93edb 3389/*
1da177e4
LT		 3390 * Main loop of the thread goes here
3391 */
3392
ee74baa7 3393static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3394{
3395 DEFINE_WAIT(wait);
ee74baa7 3396 struct pktgen_thread *t = arg;
222f1806 3397 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3398 int cpu = t->cpu;
1da177e4 3399
ee74baa7 3400 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3401
3402 init_waitqueue_head(&t->queue);
d3ede327 3403 complete(&t->start_done);
1da177e4 3404
f9467eae 3405 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3406
ee74baa7 3407 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3408
83144186
RW		 3409 set_freezable();
3410
ee74baa7
DM		 3411 while (!kthread_should_stop()) {
3412 pkt_dev = next_to_run(t);
1da177e4 3413
ef87979c 3414 if (unlikely(!pkt_dev && t->control == 0)) {
551eaff1
ED		 3415 if (pktgen_exiting)
3416 break;
ef87979c
SH		 3417 wait_event_interruptible_timeout(t->queue,
3418 t->control != 0,
3419 HZ/10);
1b3f720b 3420 try_to_freeze();
ef87979c 3421 continue;
ee74baa7 3422 }
1da177e4 3423
ee74baa7 3424 __set_current_state(TASK_RUNNING);
222f1806 3425
ef87979c 3426 if (likely(pkt_dev)) {
1da177e4
LT		 3427 pktgen_xmit(pkt_dev);
3428
ef87979c
SH		 3429 if (need_resched())
3430 pktgen_resched(pkt_dev);
3431 else
3432 cpu_relax();
3433 }
3434
222f1806 3435 if (t->control & T_STOP) {
1da177e4
LT		 3436 pktgen_stop(t);
3437 t->control &= ~(T_STOP);
3438 }
3439
222f1806 3440 if (t->control & T_RUN) {
1da177e4
LT		 3441 pktgen_run(t);
3442 t->control &= ~(T_RUN);
3443 }
3444
222f1806 3445 if (t->control & T_REMDEVALL) {
1da177e4 3446 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3447 t->control &= ~(T_REMDEVALL);
3448 }
3449
222f1806 3450 if (t->control & T_REMDEV) {
95ed63f7 3451 pktgen_rem_one_if(t);
1da177e4
LT		 3452 t->control &= ~(T_REMDEV);
3453 }
3454
09fe3ef4
AM		 3455 try_to_freeze();
3456
ee74baa7 3457 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3458 }
1da177e4 3459
f9467eae 3460 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3461 pktgen_stop(t);
1da177e4 3462
f9467eae 3463 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3464 pktgen_rem_all_ifs(t);
1da177e4 3465
f9467eae 3466 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3467 pktgen_rem_thread(t);
cdcdbe0b 3468
551eaff1
ED		 3469 /* Wait for kthread_stop */
3470 while (!kthread_should_stop()) {
3471 set_current_state(TASK_INTERRUPTIBLE);
3472 schedule();
3473 }
3474 __set_current_state(TASK_RUNNING);
3475
ee74baa7 3476 return 0;
1da177e4
LT		 3477}
3478
222f1806 3479static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3480 const char *ifname, bool exact)
1da177e4 3481{
c26a8016 3482 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3483 size_t len = strlen(ifname);
222f1806 3484
3e984840 3485 if_lock(t);
c26a8016 3486 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3487 if (strncmp(p->odevname, ifname, len) == 0) {
3488 if (p->odevname[len]) {
3489 if (exact || p->odevname[len] != '@')
3490 continue;
3491 }
c26a8016 3492 pkt_dev = p;
222f1806
LC		 3493 break;
3494 }
222f1806
LC		 3495
3496 if_unlock(t);
f9467eae 3497 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3498 return pkt_dev;
1da177e4
LT		 3499}
3500
4ec93edb
YH		 3501/*
3502 * Adds a dev at front of if_list.
1da177e4
LT		 3503 */
3504
222f1806
LC		 3505static int add_dev_to_thread(struct pktgen_thread *t,
3506 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3507{
3508 int rv = 0;
222f1806
LC		 3509
3510 if_lock(t);
3511
3512 if (pkt_dev->pg_thread) {
f9467eae 3513 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3514 rv = -EBUSY;
3515 goto out;
3516 }
c26a8016
LC		 3517
3518 list_add(&pkt_dev->list, &t->if_list);
222f1806 3519 pkt_dev->pg_thread = t;
1da177e4
LT		 3520 pkt_dev->running = 0;
3521
222f1806
LC		 3522out:
3523 if_unlock(t);
3524 return rv;
1da177e4
LT		 3525}
3526
3527/* Called under thread lock */
3528
222f1806 3529static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3530{
222f1806 3531 struct pktgen_dev *pkt_dev;
39df232f 3532 int err;
3291b9db 3533 int node = cpu_to_node(t->cpu);
222f1806 3534
1da177e4
LT		 3535 /* We don't allow a device to be on several threads */
3536
d50a6b56
SH		 3537 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3538 if (pkt_dev) {
f9467eae 3539 pr_err("ERROR: interface already used\n");
222f1806
LC		 3540 return -EBUSY;
3541 }
d50a6b56 3542
3291b9db 3543 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3544 if (!pkt_dev)
3545 return -ENOMEM;
3546
593f63b0 3547 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3548 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3549 node);
d50a6b56
SH		 3550 if (pkt_dev->flows == NULL) {
3551 kfree(pkt_dev);
3552 return -ENOMEM;
3553 }
d50a6b56 3554
95ed63f7 3555 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3556 pkt_dev->min_pkt_size = ETH_ZLEN;
3557 pkt_dev->max_pkt_size = ETH_ZLEN;
3558 pkt_dev->nfrags = 0;
fd29cf72 3559 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3560 pkt_dev->count = pg_count_d;
3561 pkt_dev->sofar = 0;
222f1806 3562 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3563 pkt_dev->udp_src_max = 9;
3564 pkt_dev->udp_dst_min = 9;
3565 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3566 pkt_dev->vlan_p = 0;
3567 pkt_dev->vlan_cfi = 0;
3568 pkt_dev->vlan_id = 0xffff;
3569 pkt_dev->svlan_p = 0;
3570 pkt_dev->svlan_cfi = 0;
3571 pkt_dev->svlan_id = 0xffff;
e99b99b4 3572 pkt_dev->node = -1;
34954ddc 3573
39df232f
SH		 3574 err = pktgen_setup_dev(pkt_dev, ifname);
3575 if (err)
3576 goto out1;
d8873315
NH		 3577 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3578 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3579
5efdccbc
DL		 3580 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3581 &pktgen_if_fops, pkt_dev);
39df232f 3582 if (!pkt_dev->entry) {
f9467eae 3583 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3584 PG_PROC_DIR, ifname);
39df232f
SH		 3585 err = -EINVAL;
3586 goto out2;
d50a6b56 3587 }
a553e4a6
JHS		 3588#ifdef CONFIG_XFRM
3589 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3590 pkt_dev->ipsproto = IPPROTO_ESP;
3591#endif
d50a6b56
SH		 3592
3593 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3594out2:
3595 dev_put(pkt_dev->odev);
3596out1:
a553e4a6
JHS		 3597#ifdef CONFIG_XFRM
3598 free_SAs(pkt_dev);
3599#endif
1d0ebfe7 3600 vfree(pkt_dev->flows);
39df232f
SH		 3601 kfree(pkt_dev);
3602 return err;
1da177e4
LT		 3603}
3604
ee74baa7 3605static int __init pktgen_create_thread(int cpu)
1da177e4 3606{
cdcdbe0b 3607 struct pktgen_thread *t;
d50a6b56 3608 struct proc_dir_entry *pe;
ee74baa7 3609 struct task_struct *p;
222f1806 3610
3291b9db
ED		 3611 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3612 cpu_to_node(cpu));
222f1806 3613 if (!t) {
f9467eae 3614 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3615 return -ENOMEM;
3616 }
3617
222f1806 3618 spin_lock_init(&t->if_lock);
1da177e4 3619 t->cpu = cpu;
222f1806 3620
ee74baa7
DM		 3621 INIT_LIST_HEAD(&t->if_list);
3622
3623 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3624 init_completion(&t->start_done);
ee74baa7 3625
94dcf29a
ED		 3626 p = kthread_create_on_node(pktgen_thread_worker,
3627 t,
3628 cpu_to_node(cpu),
3629 "kpktgend_%d", cpu);
ee74baa7 3630 if (IS_ERR(p)) {
f9467eae 3631 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3632 list_del(&t->th_list);
3633 kfree(t);
3634 return PTR_ERR(p);
3635 }
3636 kthread_bind(p, cpu);
3637 t->tsk = p;
3638
5efdccbc
DL		 3639 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3640 &pktgen_thread_fops, t);
222f1806 3641 if (!pe) {
f9467eae 3642 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3643 PG_PROC_DIR, t->tsk->comm);
3644 kthread_stop(p);
3645 list_del(&t->th_list);
222f1806
LC		 3646 kfree(t);
3647 return -EINVAL;
3648 }
d50a6b56 3649
ee74baa7 3650 wake_up_process(p);
d3ede327 3651 wait_for_completion(&t->start_done);
1da177e4
LT		 3652
3653 return 0;
3654}
3655
4ec93edb
YH		 3656/*
3657 * Removes a device from the thread if_list.
1da177e4 3658 */
222f1806
LC		 3659static void _rem_dev_from_if_list(struct pktgen_thread *t,
3660 struct pktgen_dev *pkt_dev)
1da177e4 3661{
c26a8016
LC		 3662 struct list_head *q, *n;
3663 struct pktgen_dev *p;
1da177e4 3664
c26a8016
LC		 3665 list_for_each_safe(q, n, &t->if_list) {
3666 p = list_entry(q, struct pktgen_dev, list);
3667 if (p == pkt_dev)
3668 list_del(&p->list);
1da177e4
LT		 3669 }
3670}
3671
222f1806
LC		 3672static int pktgen_remove_device(struct pktgen_thread *t,
3673 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3674{
3675
f9467eae 3676 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3677
222f1806 3678 if (pkt_dev->running) {
f9467eae 3679 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3680 pktgen_stop_device(pkt_dev);
3681 }
3682
3683 /* Dis-associate from the interface */
1da177e4
LT		 3684
3685 if (pkt_dev->odev) {
3686 dev_put(pkt_dev->odev);
222f1806
LC		 3687 pkt_dev->odev = NULL;
3688 }
3689
1da177e4
LT		 3690 /* And update the thread if_list */
3691
3692 _rem_dev_from_if_list(t, pkt_dev);
3693
39df232f
SH		 3694 if (pkt_dev->entry)
3695 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3696
a553e4a6
JHS		 3697#ifdef CONFIG_XFRM
3698 free_SAs(pkt_dev);
3699#endif
1d0ebfe7 3700 vfree(pkt_dev->flows);
26ad7879
ED		 3701 if (pkt_dev->page)
3702 put_page(pkt_dev->page);
1da177e4 3703 kfree(pkt_dev);
222f1806 3704 return 0;
1da177e4
LT		 3705}
3706
222f1806 3707static int __init pg_init(void)
1da177e4
LT		 3708{
3709 int cpu;
d50a6b56 3710 struct proc_dir_entry *pe;
ce14f894 3711 int ret = 0;
1da177e4 3712
f9467eae 3713 pr_info("%s", version);
1da177e4 3714
457c4cbc 3715 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3716 if (!pg_proc_dir)
3717 return -ENODEV;
1da177e4 3718
25296d59 3719 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3720 if (pe == NULL) {
f9467eae 3721 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
ce14f894
WC		 3722 ret = -EINVAL;
3723 goto remove_dir;
222f1806 3724 }
1da177e4 3725
1da177e4 3726 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3727
670c02c2 3728 for_each_online_cpu(cpu) {
8024bb24 3729 int err;
1da177e4 3730
ee74baa7 3731 err = pktgen_create_thread(cpu);
8024bb24 3732 if (err)
f9467eae
JP		 3733 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3734 cpu, err);
222f1806 3735 }
8024bb24
LC		 3736
3737 if (list_empty(&pktgen_threads)) {
f9467eae 3738 pr_err("ERROR: Initialization failed for all threads\n");
ce14f894
WC		 3739 ret = -ENODEV;
3740 goto unregister;
8024bb24
LC		 3741 }
3742
222f1806 3743 return 0;
ce14f894
WC		 3744
3745 unregister:
3746 unregister_netdevice_notifier(&pktgen_notifier_block);
3747 remove_proc_entry(PGCTRL, pg_proc_dir);
3748 remove_dir:
3749 proc_net_remove(&init_net, PG_PROC_DIR);
3750 return ret;
1da177e4
LT		 3751}
3752
3753static void __exit pg_cleanup(void)
3754{
cdcdbe0b
LC		 3755 struct pktgen_thread *t;
3756 struct list_head *q, *n;
1da177e4 3757
222f1806 3758 /* Stop all interfaces & threads */
551eaff1 3759 pktgen_exiting = true;
1da177e4 3760
cdcdbe0b
LC		 3761 list_for_each_safe(q, n, &pktgen_threads) {
3762 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3763 kthread_stop(t->tsk);
3764 kfree(t);
222f1806 3765 }
1da177e4 3766
222f1806 3767 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3768 unregister_netdevice_notifier(&pktgen_notifier_block);
3769
222f1806 3770 /* Clean up proc file system */
d50a6b56 3771 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3772 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3773}
3774
1da177e4
LT		 3775module_init(pg_init);
3776module_exit(pg_cleanup);
3777
c3d2f52d 3778MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3779MODULE_DESCRIPTION("Packet Generator tool");
3780MODULE_LICENSE("GPL");
c3d2f52d 3781MODULE_VERSION(VERSION);
1da177e4 3782module_param(pg_count_d, int, 0);
c3d2f52d 3783MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3784module_param(pg_delay_d, int, 0);
c3d2f52d 3785MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3786module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3787MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3788module_param(debug, int, 0);
c3d2f52d 3789MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
kernel source for telekom puls (alcatel/mediatek)