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pktgen: display IPv4 address in human-readable format
[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
68bf9f0b
AW		 251 int min_pkt_size;
252 int max_pkt_size;
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 322 /* MPLS */
95c96174 323 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 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;
95c96174
ED		 376 unsigned int cflows; /* Concurrent flows (config) */
377 unsigned int lflow; /* Flow length (config) */
378 unsigned int nflows; /* accumulated flows (stats) */
379 unsigned int 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 594 if (pkt_dev->nr_labels) {
95c96174 595 unsigned int i;
ca6549af 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 704 } else
0373a946
AW		 705 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
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
bf0813bd
PG		 770static long num_arg(const char __user *user_buffer, unsigned long maxlen,
771 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{
95c96174 815 unsigned int n = 0;
ca6549af
SW		 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;
f342cda7
JP		 894 pr_debug("%s,%lu buffer -:%s:-\n",
895 name, (unsigned long)count, tb);
222f1806 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)
f342cda7 1264 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1265 i += len;
1da177e4
LT		 1266 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1267 return count;
1268 }
1269 if (!strcmp(name, "dst_max")) {
1270 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1271 if (len < 0)
222f1806 1272 return len;
63adc6fb 1273
1da177e4 1274
222f1806 1275 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1276 return -EFAULT;
1277
222f1806
LC		 1278 buf[len] = 0;
1279 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1280 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1281 strncpy(pkt_dev->dst_max, buf, len);
1282 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1283 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1284 }
1285 if (debug)
f342cda7 1286 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1287 i += len;
1288 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1289 return count;
1290 }
1291 if (!strcmp(name, "dst6")) {
1292 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1293 if (len < 0)
1294 return len;
1da177e4
LT		 1295
1296 pkt_dev->flags |= F_IPV6;
1297
222f1806 1298 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1299 return -EFAULT;
222f1806 1300 buf[len] = 0;
1da177e4
LT		 1301
1302 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
47a0200d 1303 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1304
4e3fd7a0 1305 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1306
222f1806 1307 if (debug)
f342cda7 1308 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1309
222f1806 1310 i += len;
1da177e4
LT		 1311 sprintf(pg_result, "OK: dst6=%s", buf);
1312 return count;
1313 }
1314 if (!strcmp(name, "dst6_min")) {
1315 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1316 if (len < 0)
1317 return len;
1da177e4
LT		 1318
1319 pkt_dev->flags |= F_IPV6;
1320
222f1806 1321 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1322 return -EFAULT;
222f1806 1323 buf[len] = 0;
1da177e4
LT		 1324
1325 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
47a0200d 1326 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1327
4e3fd7a0 1328 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1329 if (debug)
f342cda7 1330 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1331
222f1806 1332 i += len;
1da177e4
LT		 1333 sprintf(pg_result, "OK: dst6_min=%s", buf);
1334 return count;
1335 }
1336 if (!strcmp(name, "dst6_max")) {
1337 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1338 if (len < 0)
1339 return len;
1da177e4
LT		 1340
1341 pkt_dev->flags |= F_IPV6;
1342
222f1806 1343 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1344 return -EFAULT;
222f1806 1345 buf[len] = 0;
1da177e4
LT		 1346
1347 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
47a0200d 1348 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1349
222f1806 1350 if (debug)
f342cda7 1351 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1352
222f1806 1353 i += len;
1da177e4
LT		 1354 sprintf(pg_result, "OK: dst6_max=%s", buf);
1355 return count;
1356 }
1357 if (!strcmp(name, "src6")) {
1358 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1359 if (len < 0)
1360 return len;
1da177e4
LT		 1361
1362 pkt_dev->flags |= F_IPV6;
1363
222f1806 1364 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1365 return -EFAULT;
222f1806 1366 buf[len] = 0;
1da177e4
LT		 1367
1368 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
47a0200d 1369 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1370
4e3fd7a0 1371 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1372
222f1806 1373 if (debug)
f342cda7 1374 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1375
1376 i += len;
1da177e4
LT		 1377 sprintf(pg_result, "OK: src6=%s", buf);
1378 return count;
1379 }
1380 if (!strcmp(name, "src_min")) {
1381 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1382 if (len < 0)
222f1806 1383 return len;
63adc6fb 1384
222f1806 1385 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1386 return -EFAULT;
222f1806
LC		 1387 buf[len] = 0;
1388 if (strcmp(buf, pkt_dev->src_min) != 0) {
1389 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1390 strncpy(pkt_dev->src_min, buf, len);
1391 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1392 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1393 }
1394 if (debug)
f342cda7 1395 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1396 i += len;
1397 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1398 return count;
1399 }
1400 if (!strcmp(name, "src_max")) {
1401 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1402 if (len < 0)
222f1806 1403 return len;
63adc6fb 1404
222f1806 1405 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1406 return -EFAULT;
222f1806
LC		 1407 buf[len] = 0;
1408 if (strcmp(buf, pkt_dev->src_max) != 0) {
1409 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1410 strncpy(pkt_dev->src_max, buf, len);
1411 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1412 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1413 }
1414 if (debug)
f342cda7 1415 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1416 i += len;
1417 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1418 return count;
1419 }
1420 if (!strcmp(name, "dst_mac")) {
1da177e4 1421 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1422 if (len < 0)
222f1806 1423 return len;
63adc6fb 1424
1da177e4 1425 memset(valstr, 0, sizeof(valstr));
222f1806 1426 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1427 return -EFAULT;
1da177e4 1428
4940fc88
AD		 1429 if (!mac_pton(valstr, pkt_dev->dst_mac))
1430 return -EINVAL;
1da177e4 1431 /* Set up Dest MAC */
4940fc88 1432 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1433
4940fc88 1434 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1435 return count;
1436 }
1437 if (!strcmp(name, "src_mac")) {
1da177e4 1438 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1439 if (len < 0)
222f1806 1440 return len;
63adc6fb 1441
1da177e4 1442 memset(valstr, 0, sizeof(valstr));
222f1806 1443 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1444 return -EFAULT;
1da177e4 1445
4940fc88
AD		 1446 if (!mac_pton(valstr, pkt_dev->src_mac))
1447 return -EINVAL;
ce5d0b47 1448 /* Set up Src MAC */
4940fc88 1449 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1450
4940fc88 1451 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1452 return count;
1453 }
1454
222f1806
LC		 1455 if (!strcmp(name, "clear_counters")) {
1456 pktgen_clear_counters(pkt_dev);
1457 sprintf(pg_result, "OK: Clearing counters.\n");
1458 return count;
1459 }
1da177e4
LT		 1460
1461 if (!strcmp(name, "flows")) {
1462 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1463 if (len < 0)
222f1806 1464 return len;
63adc6fb 1465
1da177e4
LT		 1466 i += len;
1467 if (value > MAX_CFLOWS)
1468 value = MAX_CFLOWS;
1469
1470 pkt_dev->cflows = value;
1471 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1472 return count;
1473 }
1474
1475 if (!strcmp(name, "flowlen")) {
1476 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1477 if (len < 0)
222f1806 1478 return len;
63adc6fb 1479
1da177e4
LT		 1480 i += len;
1481 pkt_dev->lflow = value;
1482 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1483 return count;
1484 }
222f1806 1485
45b270f8
RO		 1486 if (!strcmp(name, "queue_map_min")) {
1487 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1488 if (len < 0)
45b270f8 1489 return len;
63adc6fb 1490
45b270f8
RO		 1491 i += len;
1492 pkt_dev->queue_map_min = value;
1493 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1494 return count;
1495 }
1496
1497 if (!strcmp(name, "queue_map_max")) {
1498 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1499 if (len < 0)
45b270f8 1500 return len;
63adc6fb 1501
45b270f8
RO		 1502 i += len;
1503 pkt_dev->queue_map_max = value;
1504 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1505 return count;
1506 }
1507
ca6549af 1508 if (!strcmp(name, "mpls")) {
95c96174 1509 unsigned int n, cnt;
cfcabdcc 1510
ca6549af 1511 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1512 if (len < 0)
1513 return len;
ca6549af 1514 i += len;
cfcabdcc 1515 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1516 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1517 cnt += sprintf(pg_result + cnt,
1518 "%08x%s", ntohl(pkt_dev->labels[n]),
1519 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1520
1521 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1522 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1523 pkt_dev->svlan_id = 0xffff;
1524
1525 if (debug)
f342cda7 1526 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1527 }
1528 return count;
1529 }
1530
1531 if (!strcmp(name, "vlan_id")) {
1532 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1533 if (len < 0)
34954ddc 1534 return len;
63adc6fb 1535
34954ddc
FF		 1536 i += len;
1537 if (value <= 4095) {
1538 pkt_dev->vlan_id = value; /* turn on VLAN */
1539
1540 if (debug)
f342cda7 1541 pr_debug("VLAN turned on\n");
34954ddc
FF		 1542
1543 if (debug && pkt_dev->nr_labels)
f342cda7 1544 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1545
1546 pkt_dev->nr_labels = 0; /* turn off MPLS */
1547 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1548 } else {
1549 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1550 pkt_dev->svlan_id = 0xffff;
1551
1552 if (debug)
f342cda7 1553 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1554 }
1555 return count;
1556 }
1557
1558 if (!strcmp(name, "vlan_p")) {
1559 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1560 if (len < 0)
34954ddc 1561 return len;
63adc6fb 1562
34954ddc
FF		 1563 i += len;
1564 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1565 pkt_dev->vlan_p = value;
1566 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1567 } else {
1568 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1569 }
1570 return count;
1571 }
1572
1573 if (!strcmp(name, "vlan_cfi")) {
1574 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1575 if (len < 0)
34954ddc 1576 return len;
63adc6fb 1577
34954ddc
FF		 1578 i += len;
1579 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1580 pkt_dev->vlan_cfi = value;
1581 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1582 } else {
1583 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1584 }
1585 return count;
1586 }
1587
1588 if (!strcmp(name, "svlan_id")) {
1589 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1590 if (len < 0)
34954ddc 1591 return len;
63adc6fb 1592
34954ddc
FF		 1593 i += len;
1594 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1595 pkt_dev->svlan_id = value; /* turn on SVLAN */
1596
1597 if (debug)
f342cda7 1598 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1599
1600 if (debug && pkt_dev->nr_labels)
f342cda7 1601 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1602
1603 pkt_dev->nr_labels = 0; /* turn off MPLS */
1604 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1605 } else {
1606 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1607 pkt_dev->svlan_id = 0xffff;
1608
1609 if (debug)
f342cda7 1610 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1611 }
1612 return count;
1613 }
1614
1615 if (!strcmp(name, "svlan_p")) {
1616 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1617 if (len < 0)
34954ddc 1618 return len;
63adc6fb 1619
34954ddc
FF		 1620 i += len;
1621 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1622 pkt_dev->svlan_p = value;
1623 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1624 } else {
1625 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1626 }
1627 return count;
1628 }
1629
1630 if (!strcmp(name, "svlan_cfi")) {
1631 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1632 if (len < 0)
34954ddc 1633 return len;
63adc6fb 1634
34954ddc
FF		 1635 i += len;
1636 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1637 pkt_dev->svlan_cfi = value;
1638 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1639 } else {
1640 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1641 }
ca6549af
SW		 1642 return count;
1643 }
1644
1ca7768c
FF		 1645 if (!strcmp(name, "tos")) {
1646 __u32 tmp_value = 0;
1647 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1648 if (len < 0)
1ca7768c 1649 return len;
63adc6fb 1650
1ca7768c
FF		 1651 i += len;
1652 if (len == 2) {
1653 pkt_dev->tos = tmp_value;
1654 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1655 } else {
1656 sprintf(pg_result, "ERROR: tos must be 00-ff");
1657 }
1658 return count;
1659 }
1660
1661 if (!strcmp(name, "traffic_class")) {
1662 __u32 tmp_value = 0;
1663 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1664 if (len < 0)
1ca7768c 1665 return len;
63adc6fb 1666
1ca7768c
FF		 1667 i += len;
1668 if (len == 2) {
1669 pkt_dev->traffic_class = tmp_value;
1670 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1671 } else {
1672 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1673 }
1674 return count;
1675 }
1676
9e50e3ac
JF		 1677 if (!strcmp(name, "skb_priority")) {
1678 len = num_arg(&user_buffer[i], 9, &value);
1679 if (len < 0)
1680 return len;
1681
1682 i += len;
1683 pkt_dev->skb_priority = value;
1684 sprintf(pg_result, "OK: skb_priority=%i",
1685 pkt_dev->skb_priority);
1686 return count;
1687 }
1688
1da177e4
LT		 1689 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1690 return -EINVAL;
1691}
1692
d50a6b56 1693static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1694{
d50a6b56
SH		 1695 return single_open(file, pktgen_if_show, PDE(inode)->data);
1696}
1da177e4 1697
9a32144e 1698static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1699 .owner = THIS_MODULE,
1700 .open = pktgen_if_open,
1701 .read = seq_read,
1702 .llseek = seq_lseek,
1703 .write = pktgen_if_write,
1704 .release = single_release,
d50a6b56 1705};
1da177e4 1706
d50a6b56
SH		 1707static int pktgen_thread_show(struct seq_file *seq, void *v)
1708{
222f1806 1709 struct pktgen_thread *t = seq->private;
648fda74 1710 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1711
1712 BUG_ON(!t);
1da177e4 1713
222f1806 1714 seq_printf(seq, "Running: ");
1da177e4 1715
222f1806 1716 if_lock(t);
c26a8016 1717 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1718 if (pkt_dev->running)
593f63b0 1719 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1720
222f1806
LC		 1721 seq_printf(seq, "\nStopped: ");
1722
c26a8016 1723 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1724 if (!pkt_dev->running)
593f63b0 1725 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1726
1727 if (t->result[0])
d50a6b56 1728 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1729 else
d50a6b56 1730 seq_printf(seq, "\nResult: NA\n");
1da177e4 1731
222f1806 1732 if_unlock(t);
1da177e4 1733
d50a6b56 1734 return 0;
1da177e4
LT		 1735}
1736
d50a6b56 1737static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1738 const char __user * user_buffer,
1739 size_t count, loff_t * offset)
1da177e4 1740{
8a994a71 1741 struct seq_file *seq = file->private_data;
222f1806 1742 struct pktgen_thread *t = seq->private;
d6182223 1743 int i, max, len, ret;
1da177e4 1744 char name[40];
222f1806 1745 char *pg_result;
d50a6b56 1746
1da177e4 1747 if (count < 1) {
222f1806 1748 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1749 return -EINVAL;
1750 }
d50a6b56 1751
d6182223
PG		 1752 max = count;
1753 len = count_trail_chars(user_buffer, max);
222f1806 1754 if (len < 0)
d50a6b56
SH		 1755 return len;
1756
d6182223 1757 i = len;
d50a6b56 1758
1da177e4
LT		 1759 /* Read variable name */
1760
1761 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1762 if (len < 0)
d50a6b56 1763 return len;
222f1806 1764
1da177e4
LT		 1765 memset(name, 0, sizeof(name));
1766 if (copy_from_user(name, &user_buffer[i], len))
1767 return -EFAULT;
1768 i += len;
d50a6b56 1769
222f1806 1770 max = count - i;
1da177e4 1771 len = count_trail_chars(&user_buffer[i], max);
222f1806 1772 if (len < 0)
d50a6b56
SH		 1773 return len;
1774
1da177e4
LT		 1775 i += len;
1776
d50a6b56 1777 if (debug)
f342cda7 1778 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1779
222f1806 1780 if (!t) {
f9467eae 1781 pr_err("ERROR: No thread\n");
1da177e4
LT		 1782 ret = -EINVAL;
1783 goto out;
1784 }
1785
1786 pg_result = &(t->result[0]);
1787
222f1806
LC		 1788 if (!strcmp(name, "add_device")) {
1789 char f[32];
1790 memset(f, 0, 32);
1da177e4 1791 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1792 if (len < 0) {
1793 ret = len;
1da177e4
LT		 1794 goto out;
1795 }
222f1806 1796 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1797 return -EFAULT;
1798 i += len;
6146e6a4 1799 mutex_lock(&pktgen_thread_lock);
222f1806 1800 pktgen_add_device(t, f);
6146e6a4 1801 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1802 ret = count;
1803 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1804 goto out;
1805 }
1806
222f1806 1807 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1808 mutex_lock(&pktgen_thread_lock);
95ed63f7 1809 t->control |= T_REMDEVALL;
6146e6a4 1810 mutex_unlock(&pktgen_thread_lock);
222f1806 1811 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1812 ret = count;
222f1806 1813 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1814 goto out;
1815 }
1816
222f1806 1817 if (!strcmp(name, "max_before_softirq")) {
b163911f 1818 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1819 ret = count;
1da177e4
LT		 1820 goto out;
1821 }
1822
1823 ret = -EINVAL;
222f1806 1824out:
1da177e4
LT		 1825 return ret;
1826}
1827
d50a6b56 1828static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1829{
d50a6b56 1830 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1831}
1832
9a32144e 1833static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1834 .owner = THIS_MODULE,
1835 .open = pktgen_thread_open,
1836 .read = seq_read,
1837 .llseek = seq_lseek,
1838 .write = pktgen_thread_write,
1839 .release = single_release,
d50a6b56 1840};
1da177e4
LT		 1841
1842/* Think find or remove for NN */
222f1806 1843static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1844{
1845 struct pktgen_thread *t;
1846 struct pktgen_dev *pkt_dev = NULL;
3e984840 1847 bool exact = (remove == FIND);
1da177e4 1848
cdcdbe0b 1849 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1850 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1851 if (pkt_dev) {
222f1806
LC		 1852 if (remove) {
1853 if_lock(t);
1854 pkt_dev->removal_mark = 1;
1855 t->control |= T_REMDEV;
1856 if_unlock(t);
1857 }
1da177e4
LT		 1858 break;
1859 }
1da177e4 1860 }
222f1806 1861 return pkt_dev;
1da177e4
LT		 1862}
1863
95ed63f7
AK		 1864/*
1865 * mark a device for removal
1866 */
39df232f 1867static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1868{
1869 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1870 const int max_tries = 10, msec_per_try = 125;
1871 int i = 0;
95ed63f7 1872
6146e6a4 1873 mutex_lock(&pktgen_thread_lock);
f9467eae 1874 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1875
222f1806 1876 while (1) {
95ed63f7
AK		 1877
1878 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1879 if (pkt_dev == NULL)
1880 break; /* success */
95ed63f7 1881
6146e6a4 1882 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1883 pr_debug("%s: waiting for %s to disappear....\n",
1884 __func__, ifname);
95ed63f7 1885 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1886 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1887
1888 if (++i >= max_tries) {
f9467eae
JP		 1889 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1890 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1891 break;
1892 }
1893
1894 }
1895
6146e6a4 1896 mutex_unlock(&pktgen_thread_lock);
39df232f 1897}
95ed63f7 1898
39df232f
SH		 1899static void pktgen_change_name(struct net_device *dev)
1900{
1901 struct pktgen_thread *t;
1902
1903 list_for_each_entry(t, &pktgen_threads, th_list) {
1904 struct pktgen_dev *pkt_dev;
1905
1906 list_for_each_entry(pkt_dev, &t->if_list, list) {
1907 if (pkt_dev->odev != dev)
1908 continue;
1909
1910 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1911
2975315b
AD		 1912 pkt_dev->entry = proc_create_data(dev->name, 0600,
1913 pg_proc_dir,
1914 &pktgen_if_fops,
1915 pkt_dev);
39df232f 1916 if (!pkt_dev->entry)
f9467eae
JP		 1917 pr_err("can't move proc entry for '%s'\n",
1918 dev->name);
39df232f
SH		 1919 break;
1920 }
1921 }
1da177e4
LT		 1922}
1923
222f1806
LC		 1924static int pktgen_device_event(struct notifier_block *unused,
1925 unsigned long event, void *ptr)
1da177e4 1926{
39df232f 1927 struct net_device *dev = ptr;
1da177e4 1928
c57b5468 1929 if (!net_eq(dev_net(dev), &init_net) || pktgen_exiting)
e9dc8653
EB		 1930 return NOTIFY_DONE;
1931
1da177e4
LT		 1932 /* It is OK that we do not hold the group lock right now,
1933 * as we run under the RTNL lock.
1934 */
1935
1936 switch (event) {
39df232f
SH		 1937 case NETDEV_CHANGENAME:
1938 pktgen_change_name(dev);
1da177e4 1939 break;
222f1806 1940
1da177e4 1941 case NETDEV_UNREGISTER:
222f1806 1942 pktgen_mark_device(dev->name);
1da177e4 1943 break;
3ff50b79 1944 }
1da177e4
LT		 1945
1946 return NOTIFY_DONE;
1947}
1948
63adc6fb
SH		 1949static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1950 const char *ifname)
e6fce5b9
RO		 1951{
1952 char b[IFNAMSIZ+5];
d6182223 1953 int i;
e6fce5b9 1954
63adc6fb
SH		 1955 for (i = 0; ifname[i] != '@'; i++) {
1956 if (i == IFNAMSIZ)
e6fce5b9
RO		 1957 break;
1958
1959 b[i] = ifname[i];
1960 }
1961 b[i] = 0;
1962
1963 return dev_get_by_name(&init_net, b);
1964}
1965
1966
1da177e4
LT		 1967/* Associate pktgen_dev with a device. */
1968
39df232f 1969static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1970{
1da177e4 1971 struct net_device *odev;
39df232f 1972 int err;
1da177e4
LT		 1973
1974 /* Clean old setups */
1da177e4
LT		 1975 if (pkt_dev->odev) {
1976 dev_put(pkt_dev->odev);
222f1806
LC		 1977 pkt_dev->odev = NULL;
1978 }
1da177e4 1979
e6fce5b9 1980 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1981 if (!odev) {
f9467eae 1982 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1983 return -ENODEV;
1da177e4 1984 }
39df232f 1985
1da177e4 1986 if (odev->type != ARPHRD_ETHER) {
f9467eae 1987 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1988 err = -EINVAL;
1989 } else if (!netif_running(odev)) {
f9467eae 1990 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 1991 err = -ENETDOWN;
1992 } else {
1993 pkt_dev->odev = odev;
1994 return 0;
1da177e4 1995 }
1da177e4 1996
1da177e4 1997 dev_put(odev);
39df232f 1998 return err;
1da177e4
LT		 1999}
2000
2001/* Read pkt_dev from the interface and set up internal pktgen_dev
2002 * structure to have the right information to create/send packets
2003 */
2004static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2005{
64c00d81
AG		 2006 int ntxq;
2007
222f1806 2008 if (!pkt_dev->odev) {
f9467eae 2009 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2010 sprintf(pkt_dev->result,
2011 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2012 return;
2013 }
2014
64c00d81
AG		 2015 /* make sure that we don't pick a non-existing transmit queue */
2016 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2017
64c00d81 2018 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2019 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2020 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2021 pkt_dev->odevname);
26e29eed 2022 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2023 }
88271660 2024 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2025 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2026 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2027 pkt_dev->odevname);
26e29eed 2028 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2029 }
2030
222f1806 2031 /* Default to the interface's mac if not explicitly set. */
1da177e4 2032
f404e9a6 2033 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2034 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2035
222f1806 2036 /* Set up Dest MAC */
f404e9a6 2037 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2038
222f1806 2039 if (pkt_dev->flags & F_IPV6) {
68bf9f0b
AW		 2040 if (pkt_dev->min_pkt_size == 0) {
2041 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2042 + sizeof(struct udphdr)
2043 + sizeof(struct pktgen_hdr)
2044 + pkt_dev->pkt_overhead;
2045 }
2046
1da177e4 2047 /*
4ec93edb 2048 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2049 * gets exported
2050 */
2051
2052#ifdef NOTNOW
222f1806 2053 int i, set = 0, err = 1;
1da177e4
LT		 2054 struct inet6_dev *idev;
2055
222f1806
LC		 2056 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2057 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2058 set = 1;
2059 break;
2060 }
2061
222f1806
LC		 2062 if (!set) {
2063
1da177e4
LT		 2064 /*
2065 * Use linklevel address if unconfigured.
2066 *
2067 * use ipv6_get_lladdr if/when it's get exported
2068 */
2069
8814c4b5 2070 rcu_read_lock();
63adc6fb
SH		 2071 idev = __in6_dev_get(pkt_dev->odev);
2072 if (idev) {
1da177e4
LT		 2073 struct inet6_ifaddr *ifp;
2074
2075 read_lock_bh(&idev->lock);
222f1806
LC		 2076 for (ifp = idev->addr_list; ifp;
2077 ifp = ifp->if_next) {
f64f9e71
JP		 2078 if (ifp->scope == IFA_LINK &&
2079 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2080 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2081 err = 0;
2082 break;
2083 }
2084 }
2085 read_unlock_bh(&idev->lock);
2086 }
8814c4b5 2087 rcu_read_unlock();
222f1806 2088 if (err)
f9467eae 2089 pr_err("ERROR: IPv6 link address not available\n");
1da177e4
LT		 2090 }
2091#endif
222f1806 2092 } else {
68bf9f0b
AW		 2093 if (pkt_dev->min_pkt_size == 0) {
2094 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2095 + sizeof(struct udphdr)
2096 + sizeof(struct pktgen_hdr)
2097 + pkt_dev->pkt_overhead;
2098 }
2099
1da177e4
LT		 2100 pkt_dev->saddr_min = 0;
2101 pkt_dev->saddr_max = 0;
2102 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2103
2104 struct in_device *in_dev;
1da177e4
LT		 2105
2106 rcu_read_lock();
e5ed6399 2107 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2108 if (in_dev) {
2109 if (in_dev->ifa_list) {
222f1806
LC		 2110 pkt_dev->saddr_min =
2111 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2112 pkt_dev->saddr_max = pkt_dev->saddr_min;
2113 }
1da177e4
LT		 2114 }
2115 rcu_read_unlock();
222f1806 2116 } else {
1da177e4
LT		 2117 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2118 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2119 }
2120
2121 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2122 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2123 }
222f1806 2124 /* Initialize current values. */
68bf9f0b
AW		 2125 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2126 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2127 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2128
222f1806
LC		 2129 pkt_dev->cur_dst_mac_offset = 0;
2130 pkt_dev->cur_src_mac_offset = 0;
2131 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2132 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2133 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2134 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2135 pkt_dev->nflows = 0;
2136}
2137
fd29cf72
SH		 2138
2139static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2140{
ef87979c 2141 ktime_t start_time, end_time;
417bc4b8 2142 s64 remaining;
2bc481cf
SH		 2143 struct hrtimer_sleeper t;
2144
2145 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2146 hrtimer_set_expires(&t.timer, spin_until);
2147
43d28b65 2148 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2149 if (remaining <= 0) {
2150 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2151 return;
417bc4b8 2152 }
2bc481cf 2153
ef87979c 2154 start_time = ktime_now();
33136d12
ED		 2155 if (remaining < 100000) {
2156 /* for small delays (<100us), just loop until limit is reached */
2157 do {
2158 end_time = ktime_now();
2159 } while (ktime_lt(end_time, spin_until));
2160 } else {
2bc481cf
SH		 2161 /* see do_nanosleep */
2162 hrtimer_init_sleeper(&t, current);
2163 do {
2164 set_current_state(TASK_INTERRUPTIBLE);
2165 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2166 if (!hrtimer_active(&t.timer))
2167 t.task = NULL;
2168
2169 if (likely(t.task))
1da177e4 2170 schedule();
1da177e4 2171
2bc481cf
SH		 2172 hrtimer_cancel(&t.timer);
2173 } while (t.task && pkt_dev->running && !signal_pending(current));
2174 __set_current_state(TASK_RUNNING);
33136d12 2175 end_time = ktime_now();
1da177e4 2176 }
ef87979c
SH		 2177
2178 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2179 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2180}
2181
16dab72f
JHS		 2182static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2183{
a553e4a6 2184 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2185 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2186 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2187 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2188}
2189
648fda74 2190static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2191{
648fda74 2192 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2193}
2194
2195static inline int f_pick(struct pktgen_dev *pkt_dev)
2196{
2197 int flow = pkt_dev->curfl;
2198
2199 if (pkt_dev->flags & F_FLOW_SEQ) {
2200 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2201 /* reset time */
2202 pkt_dev->flows[flow].count = 0;
1211a645 2203 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2204 pkt_dev->curfl += 1;
2205 if (pkt_dev->curfl >= pkt_dev->cflows)
2206 pkt_dev->curfl = 0; /*reset */
2207 }
2208 } else {
2209 flow = random32() % pkt_dev->cflows;
1211a645 2210 pkt_dev->curfl = flow;
007a531b 2211
1211a645 2212 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2213 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2214 pkt_dev->flows[flow].flags = 0;
2215 }
007a531b
JHS		 2216 }
2217
2218 return pkt_dev->curfl;
2219}
2220
a553e4a6
JHS		 2221
2222#ifdef CONFIG_XFRM
2223/* If there was already an IPSEC SA, we keep it as is, else
2224 * we go look for it ...
2225*/
bd55775c 2226#define DUMMY_MARK 0
fea1ab0f 2227static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2228{
2229 struct xfrm_state *x = pkt_dev->flows[flow].x;
2230 if (!x) {
2231 /*slow path: we dont already have xfrm_state*/
bd55775c 2232 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2233 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2234 (xfrm_address_t *)&pkt_dev->cur_saddr,
2235 AF_INET,
2236 pkt_dev->ipsmode,
2237 pkt_dev->ipsproto, 0);
2238 if (x) {
2239 pkt_dev->flows[flow].x = x;
2240 set_pkt_overhead(pkt_dev);
63adc6fb 2241 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2242 }
2243
2244 }
2245}
2246#endif
fd2ea0a7
DM		 2247static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2248{
e6fce5b9
RO		 2249
2250 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2251 pkt_dev->cur_queue_map = smp_processor_id();
2252
896a7cf8 2253 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2254 __u16 t;
2255 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2256 t = random32() %
2257 (pkt_dev->queue_map_max -
2258 pkt_dev->queue_map_min + 1)
2259 + pkt_dev->queue_map_min;
2260 } else {
2261 t = pkt_dev->cur_queue_map + 1;
2262 if (t > pkt_dev->queue_map_max)
2263 t = pkt_dev->queue_map_min;
2264 }
2265 pkt_dev->cur_queue_map = t;
2266 }
bfdbc0ac 2267 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2268}
2269
1da177e4
LT		 2270/* Increment/randomize headers according to flags and current values
2271 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2272 */
222f1806
LC		 2273static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2274{
2275 __u32 imn;
2276 __u32 imx;
2277 int flow = 0;
1da177e4 2278
007a531b
JHS		 2279 if (pkt_dev->cflows)
2280 flow = f_pick(pkt_dev);
1da177e4
LT		 2281
2282 /* Deal with source MAC */
222f1806
LC		 2283 if (pkt_dev->src_mac_count > 1) {
2284 __u32 mc;
2285 __u32 tmp;
2286
2287 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2288 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2289 else {
2290 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2291 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2292 pkt_dev->src_mac_count)
2293 pkt_dev->cur_src_mac_offset = 0;
2294 }
2295
2296 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2297 pkt_dev->hh[11] = tmp;
2298 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2299 pkt_dev->hh[10] = tmp;
2300 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2301 pkt_dev->hh[9] = tmp;
2302 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2303 pkt_dev->hh[8] = tmp;
2304 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2305 pkt_dev->hh[7] = tmp;
2306 }
2307
2308 /* Deal with Destination MAC */
2309 if (pkt_dev->dst_mac_count > 1) {
2310 __u32 mc;
2311 __u32 tmp;
2312
2313 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2314 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2315
2316 else {
2317 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2318 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2319 pkt_dev->dst_mac_count) {
2320 pkt_dev->cur_dst_mac_offset = 0;
2321 }
2322 }
2323
2324 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2325 pkt_dev->hh[5] = tmp;
2326 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2327 pkt_dev->hh[4] = tmp;
2328 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2329 pkt_dev->hh[3] = tmp;
2330 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2331 pkt_dev->hh[2] = tmp;
2332 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2333 pkt_dev->hh[1] = tmp;
2334 }
2335
ca6549af 2336 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2337 unsigned int i;
e71a4783 2338 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2339 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2340 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2341 ((__force __be32)random32() &
ca6549af
SW		 2342 htonl(0x000fffff));
2343 }
2344
34954ddc 2345 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2346 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2347 }
2348
2349 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2350 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2351 }
2352
222f1806
LC		 2353 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2354 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2355 pkt_dev->cur_udp_src = random32() %
2356 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2357 + pkt_dev->udp_src_min;
222f1806
LC		 2358
2359 else {
1da177e4
LT		 2360 pkt_dev->cur_udp_src++;
2361 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2362 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2363 }
2364 }
2365
2366 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2367 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2368 pkt_dev->cur_udp_dst = random32() %
2369 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2370 + pkt_dev->udp_dst_min;
222f1806 2371 } else {
1da177e4 2372 pkt_dev->cur_udp_dst++;
222f1806 2373 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2374 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2375 }
2376 }
1da177e4
LT		 2377
2378 if (!(pkt_dev->flags & F_IPV6)) {
2379
63adc6fb
SH		 2380 imn = ntohl(pkt_dev->saddr_min);
2381 imx = ntohl(pkt_dev->saddr_max);
2382 if (imn < imx) {
1da177e4 2383 __u32 t;
222f1806 2384 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2385 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2386 else {
2387 t = ntohl(pkt_dev->cur_saddr);
2388 t++;
63adc6fb 2389 if (t > imx)
1da177e4 2390 t = imn;
63adc6fb 2391
1da177e4
LT		 2392 }
2393 pkt_dev->cur_saddr = htonl(t);
2394 }
222f1806 2395
007a531b 2396 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2397 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2398 } else {
252e3346
AV		 2399 imn = ntohl(pkt_dev->daddr_min);
2400 imx = ntohl(pkt_dev->daddr_max);
2401 if (imn < imx) {
1da177e4 2402 __u32 t;
252e3346 2403 __be32 s;
1da177e4
LT		 2404 if (pkt_dev->flags & F_IPDST_RND) {
2405
5fa6fc76 2406 t = random32() % (imx - imn) + imn;
252e3346 2407 s = htonl(t);
1da177e4 2408
21cf2253
JP		 2409 while (ipv4_is_loopback(s) ||
2410 ipv4_is_multicast(s) ||
1e637c74 2411 ipv4_is_lbcast(s) ||
21cf2253
JP		 2412 ipv4_is_zeronet(s) ||
2413 ipv4_is_local_multicast(s)) {
5fa6fc76 2414 t = random32() % (imx - imn) + imn;
252e3346 2415 s = htonl(t);
1da177e4 2416 }
252e3346
AV		 2417 pkt_dev->cur_daddr = s;
2418 } else {
1da177e4
LT		 2419 t = ntohl(pkt_dev->cur_daddr);
2420 t++;
2421 if (t > imx) {
2422 t = imn;
2423 }
2424 pkt_dev->cur_daddr = htonl(t);
2425 }
2426 }
222f1806 2427 if (pkt_dev->cflows) {
007a531b 2428 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2429 pkt_dev->flows[flow].cur_daddr =
2430 pkt_dev->cur_daddr;
a553e4a6
JHS		 2431#ifdef CONFIG_XFRM
2432 if (pkt_dev->flags & F_IPSEC_ON)
2433 get_ipsec_sa(pkt_dev, flow);
2434#endif
1da177e4
LT		 2435 pkt_dev->nflows++;
2436 }
2437 }
222f1806
LC		 2438 } else { /* IPV6 * */
2439
2440 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2441 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2442 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2443 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2444 else {
2445 int i;
2446
2447 /* Only random destinations yet */
2448
222f1806 2449 for (i = 0; i < 4; i++) {
1da177e4 2450 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2451 (((__force __be32)random32() |
222f1806
LC		 2452 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2453 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2454 }
222f1806 2455 }
1da177e4
LT		 2456 }
2457
222f1806
LC		 2458 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2459 __u32 t;
2460 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2461 t = random32() %
2462 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2463 + pkt_dev->min_pkt_size;
222f1806 2464 } else {
1da177e4 2465 t = pkt_dev->cur_pkt_size + 1;
222f1806 2466 if (t > pkt_dev->max_pkt_size)
1da177e4 2467 t = pkt_dev->min_pkt_size;
222f1806
LC		 2468 }
2469 pkt_dev->cur_pkt_size = t;
2470 }
1da177e4 2471
fd2ea0a7 2472 set_cur_queue_map(pkt_dev);
45b270f8 2473
1da177e4
LT		 2474 pkt_dev->flows[flow].count++;
2475}
2476
a553e4a6
JHS		 2477
2478#ifdef CONFIG_XFRM
2479static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2480{
2481 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2482 int err = 0;
a553e4a6
JHS		 2483
2484 if (!x)
2485 return 0;
2486 /* XXX: we dont support tunnel mode for now until
2487 * we resolve the dst issue */
2488 if (x->props.mode != XFRM_MODE_TRANSPORT)
2489 return 0;
2490
2491 spin_lock(&x->lock);
a553e4a6 2492
13996378 2493 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2494 if (err)
2495 goto error;
2496 err = x->type->output(x, skb);
2497 if (err)
2498 goto error;
2499
63adc6fb 2500 x->curlft.bytes += skb->len;
a553e4a6 2501 x->curlft.packets++;
a553e4a6
JHS		 2502error:
2503 spin_unlock(&x->lock);
2504 return err;
2505}
2506
475ac1e4 2507static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2508{
2509 if (pkt_dev->cflows) {
2510 /* let go of the SAs if we have them */
d6182223
PG		 2511 int i;
2512 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2513 struct xfrm_state *x = pkt_dev->flows[i].x;
2514 if (x) {
2515 xfrm_state_put(x);
2516 pkt_dev->flows[i].x = NULL;
2517 }
2518 }
2519 }
2520}
2521
475ac1e4 2522static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2523 struct sk_buff *skb, __be16 protocol)
2524{
2525 if (pkt_dev->flags & F_IPSEC_ON) {
2526 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2527 int nhead = 0;
2528 if (x) {
2529 int ret;
2530 __u8 *eth;
2531 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2532 if (nhead > 0) {
a553e4a6
JHS		 2533 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2534 if (ret < 0) {
f9467eae
JP		 2535 pr_err("Error expanding ipsec packet %d\n",
2536 ret);
b4bb4ac8 2537 goto err;
a553e4a6
JHS		 2538 }
2539 }
2540
2541 /* ipsec is not expecting ll header */
2542 skb_pull(skb, ETH_HLEN);
2543 ret = pktgen_output_ipsec(skb, pkt_dev);
2544 if (ret) {
f9467eae 2545 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2546 goto err;
a553e4a6
JHS		 2547 }
2548 /* restore ll */
2549 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2550 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2551 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2552 }
2553 }
2554 return 1;
b4bb4ac8
IJ		 2555err:
2556 kfree_skb(skb);
2557 return 0;
a553e4a6
JHS		 2558}
2559#endif
2560
ca6549af
SW		 2561static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2562{
95c96174 2563 unsigned int i;
63adc6fb 2564 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2565 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2566
ca6549af
SW		 2567 mpls--;
2568 *mpls |= MPLS_STACK_BOTTOM;
2569}
2570
0f37c605
AV		 2571static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2572 unsigned int prio)
2573{
2574 return htons(id | (cfi << 12) | (prio << 13));
2575}
2576
26ad7879
ED		 2577static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2578 int datalen)
2579{
2580 struct timeval timestamp;
2581 struct pktgen_hdr *pgh;
2582
2583 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2584 datalen -= sizeof(*pgh);
2585
2586 if (pkt_dev->nfrags <= 0) {
05aebe2e 2587 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2588 } else {
2589 int frags = pkt_dev->nfrags;
2590 int i, len;
7d36a991 2591 int frag_len;
26ad7879
ED		 2592
2593
2594 if (frags > MAX_SKB_FRAGS)
2595 frags = MAX_SKB_FRAGS;
2596 len = datalen - frags * PAGE_SIZE;
2597 if (len > 0) {
2598 memset(skb_put(skb, len), 0, len);
2599 datalen = frags * PAGE_SIZE;
2600 }
2601
2602 i = 0;
7d36a991 2603 frag_len = (datalen/frags) < PAGE_SIZE ?
2604 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2605 while (datalen > 0) {
2606 if (unlikely(!pkt_dev->page)) {
2607 int node = numa_node_id();
2608
2609 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2610 node = pkt_dev->node;
2611 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2612 if (!pkt_dev->page)
2613 break;
2614 }
a0bec1cd 2615 get_page(pkt_dev->page);
ea2ab693 2616 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2617 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2618 /*last fragment, fill rest of data*/
2619 if (i == (frags - 1))
9e903e08
ED		 2620 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2621 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2622 else
9e903e08
ED		 2623 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2624 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2625 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2626 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2627 i++;
2628 skb_shinfo(skb)->nr_frags = i;
2629 }
26ad7879
ED		 2630 }
2631
2632 /* Stamp the time, and sequence number,
2633 * convert them to network byte order
2634 */
2635 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2636 pgh->seq_num = htonl(pkt_dev->seq_num);
2637
2638 do_gettimeofday(&timestamp);
2639 pgh->tv_sec = htonl(timestamp.tv_sec);
2640 pgh->tv_usec = htonl(timestamp.tv_usec);
2641}
2642
222f1806
LC		 2643static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2644 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2645{
2646 struct sk_buff *skb = NULL;
2647 __u8 *eth;
2648 struct udphdr *udph;
2649 int datalen, iplen;
2650 struct iphdr *iph;
d5f1ce9a 2651 __be16 protocol = htons(ETH_P_IP);
ca6549af 2652 __be32 *mpls;
34954ddc
FF		 2653 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2654 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2655 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2656 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2657 u16 queue_map;
ca6549af
SW		 2658
2659 if (pkt_dev->nr_labels)
d5f1ce9a 2660 protocol = htons(ETH_P_MPLS_UC);
222f1806 2661
34954ddc 2662 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2663 protocol = htons(ETH_P_8021Q);
34954ddc 2664
64053bee
RO		 2665 /* Update any of the values, used when we're incrementing various
2666 * fields.
2667 */
2668 mod_cur_headers(pkt_dev);
eb589063 2669 queue_map = pkt_dev->cur_queue_map;
64053bee 2670
7ac5459e 2671 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2672
2673 if (pkt_dev->flags & F_NODE) {
2674 int node;
2675
2676 if (pkt_dev->node >= 0)
2677 node = pkt_dev->node;
2678 else
2679 node = numa_node_id();
2680
2681 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2682 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2683 if (likely(skb)) {
2684 skb_reserve(skb, NET_SKB_PAD);
2685 skb->dev = odev;
2686 }
2687 }
2688 else
2689 skb = __netdev_alloc_skb(odev,
2690 pkt_dev->cur_pkt_size + 64
2691 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2692
1da177e4
LT		 2693 if (!skb) {
2694 sprintf(pkt_dev->result, "No memory");
2695 return NULL;
2696 }
a8d764b9 2697 prefetchw(skb->data);
1da177e4 2698
7ac5459e 2699 skb_reserve(skb, datalen);
1da177e4
LT		 2700
2701 /* Reserve for ethernet and IP header */
2702 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2703 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2704 if (pkt_dev->nr_labels)
2705 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2706
2707 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2708 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2709 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2710 *svlan_tci = build_tci(pkt_dev->svlan_id,
2711 pkt_dev->svlan_cfi,
2712 pkt_dev->svlan_p);
34954ddc 2713 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2714 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2715 }
2716 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2717 *vlan_tci = build_tci(pkt_dev->vlan_id,
2718 pkt_dev->vlan_cfi,
2719 pkt_dev->vlan_p);
34954ddc 2720 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2721 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2722 }
2723
27a884dc 2724 skb->network_header = skb->tail;
b0e380b1 2725 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2726 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2727 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2728 skb->priority = pkt_dev->skb_priority;
2729
ddc7b8e3
ACM		 2730 iph = ip_hdr(skb);
2731 udph = udp_hdr(skb);
1da177e4 2732
1da177e4 2733 memcpy(eth, pkt_dev->hh, 12);
252e3346 2734 *(__be16 *) & eth[12] = protocol;
1da177e4 2735
ca6549af
SW		 2736 /* Eth + IPh + UDPh + mpls */
2737 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2738 pkt_dev->pkt_overhead;
6af773e7 2739 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2740 datalen = sizeof(struct pktgen_hdr);
222f1806 2741
1da177e4
LT		 2742 udph->source = htons(pkt_dev->cur_udp_src);
2743 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2744 udph->len = htons(datalen + 8); /* DATA + udphdr */
2745 udph->check = 0; /* No checksum */
1da177e4
LT		 2746
2747 iph->ihl = 5;
2748 iph->version = 4;
2749 iph->ttl = 32;
1ca7768c 2750 iph->tos = pkt_dev->tos;
222f1806 2751 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2752 iph->saddr = pkt_dev->cur_saddr;
2753 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2754 iph->id = htons(pkt_dev->ip_id);
2755 pkt_dev->ip_id++;
1da177e4
LT		 2756 iph->frag_off = 0;
2757 iplen = 20 + 8 + datalen;
2758 iph->tot_len = htons(iplen);
2759 iph->check = 0;
222f1806 2760 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2761 skb->protocol = protocol;
b0e380b1 2762 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2763 pkt_dev->pkt_overhead);
1da177e4
LT		 2764 skb->dev = odev;
2765 skb->pkt_type = PACKET_HOST;
26ad7879 2766 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2767
a553e4a6
JHS		 2768#ifdef CONFIG_XFRM
2769 if (!process_ipsec(pkt_dev, skb, protocol))
2770 return NULL;
2771#endif
2772
1da177e4
LT		 2773 return skb;
2774}
2775
2776/*
4ec93edb 2777 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2778 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2779 *
4ec93edb 2780 * Slightly modified for kernel.
1da177e4
LT		 2781 * Should be candidate for net/ipv4/utils.c
2782 * --ro
2783 */
2784
222f1806 2785static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2786{
2787 unsigned int i;
222f1806 2788 unsigned int len = 0;
1da177e4
LT		 2789 unsigned long u;
2790 char suffix[16];
222f1806
LC		 2791 unsigned int prefixlen = 0;
2792 unsigned int suffixlen = 0;
252e3346 2793 __be32 tmp;
cfcabdcc 2794 char *pos;
1da177e4 2795
222f1806
LC		 2796 for (i = 0; i < 16; i++)
2797 ip[i] = 0;
1da177e4
LT		 2798
2799 for (;;) {
2800 if (*s == ':') {
2801 len++;
222f1806
LC		 2802 if (s[1] == ':') { /* Found "::", skip to part 2 */
2803 s += 2;
1da177e4
LT		 2804 len++;
2805 break;
2806 }
2807 s++;
2808 }
1da177e4 2809
cfcabdcc
SH		 2810 u = simple_strtoul(s, &pos, 16);
2811 i = pos - s;
222f1806
LC		 2812 if (!i)
2813 return 0;
2814 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2815
2816 /* the last 4 bytes may be written as IPv4 address */
2817
2818 tmp = in_aton(s);
222f1806
LC		 2819 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2820 return i + len;
1da177e4
LT		 2821 }
2822 ip[prefixlen++] = (u >> 8);
2823 ip[prefixlen++] = (u & 255);
222f1806
LC		 2824 s += i;
2825 len += i;
2826 if (prefixlen == 16)
1da177e4
LT		 2827 return len;
2828 }
2829
2830/* part 2, after "::" */
2831 for (;;) {
2832 if (*s == ':') {
222f1806 2833 if (suffixlen == 0)
1da177e4
LT		 2834 break;
2835 s++;
2836 len++;
222f1806 2837 } else if (suffixlen != 0)
1da177e4 2838 break;
cfcabdcc
SH		 2839
2840 u = simple_strtol(s, &pos, 16);
2841 i = pos - s;
1da177e4 2842 if (!i) {
222f1806
LC		 2843 if (*s)
2844 len--;
1da177e4
LT		 2845 break;
2846 }
222f1806 2847 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2848 tmp = in_aton(s);
222f1806
LC		 2849 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2850 sizeof(tmp));
2851 suffixlen += 4;
2852 len += strlen(s);
1da177e4
LT		 2853 break;
2854 }
2855 suffix[suffixlen++] = (u >> 8);
2856 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2857 s += i;
2858 len += i;
2859 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2860 break;
2861 }
222f1806
LC		 2862 for (i = 0; i < suffixlen; i++)
2863 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2864 return len;
2865}
2866
222f1806
LC		 2867static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2868 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2869{
2870 struct sk_buff *skb = NULL;
2871 __u8 *eth;
2872 struct udphdr *udph;
2873 int datalen;
2874 struct ipv6hdr *iph;
d5f1ce9a 2875 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2876 __be32 *mpls;
34954ddc
FF		 2877 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2878 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2879 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2880 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2881 u16 queue_map;
ca6549af
SW		 2882
2883 if (pkt_dev->nr_labels)
d5f1ce9a 2884 protocol = htons(ETH_P_MPLS_UC);
64053bee 2885
34954ddc 2886 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2887 protocol = htons(ETH_P_8021Q);
34954ddc 2888
64053bee
RO		 2889 /* Update any of the values, used when we're incrementing various
2890 * fields.
2891 */
2892 mod_cur_headers(pkt_dev);
eb589063 2893 queue_map = pkt_dev->cur_queue_map;
64053bee 2894
e470757d
SH		 2895 skb = __netdev_alloc_skb(odev,
2896 pkt_dev->cur_pkt_size + 64
2897 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2898 if (!skb) {
2899 sprintf(pkt_dev->result, "No memory");
2900 return NULL;
2901 }
a8d764b9 2902 prefetchw(skb->data);
1da177e4
LT		 2903
2904 skb_reserve(skb, 16);
2905
2906 /* Reserve for ethernet and IP header */
2907 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2908 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2909 if (pkt_dev->nr_labels)
2910 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2911
2912 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2913 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2914 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2915 *svlan_tci = build_tci(pkt_dev->svlan_id,
2916 pkt_dev->svlan_cfi,
2917 pkt_dev->svlan_p);
34954ddc 2918 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2919 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2920 }
2921 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2922 *vlan_tci = build_tci(pkt_dev->vlan_id,
2923 pkt_dev->vlan_cfi,
2924 pkt_dev->vlan_p);
34954ddc 2925 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2926 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2927 }
2928
27a884dc 2929 skb->network_header = skb->tail;
b0e380b1 2930 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2931 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2932 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2933 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 2934 iph = ipv6_hdr(skb);
2935 udph = udp_hdr(skb);
1da177e4 2936
1da177e4 2937 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2938 *(__be16 *) &eth[12] = protocol;
64053bee 2939
ca6549af
SW		 2940 /* Eth + IPh + UDPh + mpls */
2941 datalen = pkt_dev->cur_pkt_size - 14 -
2942 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2943 pkt_dev->pkt_overhead;
1da177e4 2944
5aa8b572 2945 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2946 datalen = sizeof(struct pktgen_hdr);
e87cc472 2947 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2948 }
2949
2950 udph->source = htons(pkt_dev->cur_udp_src);
2951 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2952 udph->len = htons(datalen + sizeof(struct udphdr));
2953 udph->check = 0; /* No checksum */
1da177e4 2954
d5f1ce9a 2955 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2956
1ca7768c
FF		 2957 if (pkt_dev->traffic_class) {
2958 /* Version + traffic class + flow (0) */
252e3346 2959 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2960 }
2961
1da177e4
LT		 2962 iph->hop_limit = 32;
2963
2964 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2965 iph->nexthdr = IPPROTO_UDP;
2966
4e3fd7a0
AD		 2967 iph->daddr = pkt_dev->cur_in6_daddr;
2968 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2969
b0e380b1 2970 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2971 pkt_dev->pkt_overhead);
ca6549af 2972 skb->protocol = protocol;
1da177e4
LT		 2973 skb->dev = odev;
2974 skb->pkt_type = PACKET_HOST;
2975
26ad7879 2976 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2977
1da177e4
LT		 2978 return skb;
2979}
2980
475ac1e4
SH		 2981static struct sk_buff *fill_packet(struct net_device *odev,
2982 struct pktgen_dev *pkt_dev)
1da177e4 2983{
222f1806 2984 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2985 return fill_packet_ipv6(odev, pkt_dev);
2986 else
2987 return fill_packet_ipv4(odev, pkt_dev);
2988}
2989
222f1806 2990static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2991{
222f1806
LC		 2992 pkt_dev->seq_num = 1;
2993 pkt_dev->idle_acc = 0;
1da177e4 2994 pkt_dev->sofar = 0;
222f1806
LC		 2995 pkt_dev->tx_bytes = 0;
2996 pkt_dev->errors = 0;
1da177e4
LT		 2997}
2998
2999/* Set up structure for sending pkts, clear counters */
3000
3001static void pktgen_run(struct pktgen_thread *t)
3002{
c26a8016 3003 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3004 int started = 0;
3005
f9467eae 3006 func_enter();
1da177e4
LT		 3007
3008 if_lock(t);
c26a8016 3009 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3010
3011 /*
3012 * setup odev and create initial packet.
3013 */
3014 pktgen_setup_inject(pkt_dev);
3015
222f1806 3016 if (pkt_dev->odev) {
1da177e4 3017 pktgen_clear_counters(pkt_dev);
222f1806 3018 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3019 pkt_dev->skb = NULL;
fd29cf72
SH		 3020 pkt_dev->started_at =
3021 pkt_dev->next_tx = ktime_now();
3022
16dab72f 3023 set_pkt_overhead(pkt_dev);
222f1806 3024
1da177e4
LT		 3025 strcpy(pkt_dev->result, "Starting");
3026 started++;
222f1806 3027 } else
1da177e4
LT		 3028 strcpy(pkt_dev->result, "Error starting");
3029 }
3030 if_unlock(t);
222f1806
LC		 3031 if (started)
3032 t->control &= ~(T_STOP);
1da177e4
LT		 3033}
3034
3035static void pktgen_stop_all_threads_ifs(void)
3036{
cdcdbe0b 3037 struct pktgen_thread *t;
1da177e4 3038
f9467eae 3039 func_enter();
1da177e4 3040
6146e6a4 3041 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3042
3043 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3044 t->control |= T_STOP;
cdcdbe0b 3045
6146e6a4 3046 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3047}
3048
648fda74 3049static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3050{
648fda74 3051 const struct pktgen_dev *pkt_dev;
1da177e4 3052
c26a8016 3053 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3054 if (pkt_dev->running)
3055 return 1;
3056 return 0;
1da177e4
LT		 3057}
3058
222f1806 3059static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3060{
222f1806 3061 if_lock(t);
1da177e4 3062
222f1806 3063 while (thread_is_running(t)) {
1da177e4 3064
222f1806 3065 if_unlock(t);
1da177e4 3066
222f1806 3067 msleep_interruptible(100);
1da177e4 3068
222f1806
LC		 3069 if (signal_pending(current))
3070 goto signal;
3071 if_lock(t);
3072 }
3073 if_unlock(t);
3074 return 1;
3075signal:
3076 return 0;
1da177e4
LT		 3077}
3078
3079static int pktgen_wait_all_threads_run(void)
3080{
cdcdbe0b 3081 struct pktgen_thread *t;
1da177e4 3082 int sig = 1;
222f1806 3083
6146e6a4 3084 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3085
3086 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3087 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3088 if (sig == 0)
3089 break;
1da177e4 3090 }
cdcdbe0b
LC		 3091
3092 if (sig == 0)
3093 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3094 t->control |= (T_STOP);
cdcdbe0b 3095
6146e6a4 3096 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3097 return sig;
3098}
3099
3100static void pktgen_run_all_threads(void)
3101{
cdcdbe0b 3102 struct pktgen_thread *t;
1da177e4 3103
f9467eae 3104 func_enter();
1da177e4 3105
6146e6a4 3106 mutex_lock(&pktgen_thread_lock);
1da177e4 3107
cdcdbe0b 3108 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3109 t->control |= (T_RUN);
cdcdbe0b 3110
6146e6a4 3111 mutex_unlock(&pktgen_thread_lock);
1da177e4 3112
63adc6fb
SH		 3113 /* Propagate thread->control */
3114 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3115
1da177e4
LT		 3116 pktgen_wait_all_threads_run();
3117}
3118
eb37b41c
JB		 3119static void pktgen_reset_all_threads(void)
3120{
3121 struct pktgen_thread *t;
3122
f9467eae 3123 func_enter();
eb37b41c
JB		 3124
3125 mutex_lock(&pktgen_thread_lock);
3126
3127 list_for_each_entry(t, &pktgen_threads, th_list)
3128 t->control |= (T_REMDEVALL);
3129
3130 mutex_unlock(&pktgen_thread_lock);
3131
63adc6fb
SH		 3132 /* Propagate thread->control */
3133 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3134
3135 pktgen_wait_all_threads_run();
3136}
3137
1da177e4
LT		 3138static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3139{
fd29cf72 3140 __u64 bps, mbps, pps;
222f1806 3141 char *p = pkt_dev->result;
fd29cf72
SH		 3142 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3143 pkt_dev->started_at);
3144 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3145
03a14ab1 3146 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3147 (unsigned long long)ktime_to_us(elapsed),
3148 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3149 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3150 (unsigned long long)pkt_dev->sofar,
3151 pkt_dev->cur_pkt_size, nr_frags);
3152
fd29cf72
SH		 3153 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3154 ktime_to_ns(elapsed));
222f1806
LC		 3155
3156 bps = pps * 8 * pkt_dev->cur_pkt_size;
3157
3158 mbps = bps;
3159 do_div(mbps, 1000000);
3160 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3161 (unsigned long long)pps,
3162 (unsigned long long)mbps,
3163 (unsigned long long)bps,
3164 (unsigned long long)pkt_dev->errors);
1da177e4 3165}
1da177e4
LT		 3166
3167/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3168static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3169{
222f1806 3170 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3171
222f1806 3172 if (!pkt_dev->running) {
f9467eae
JP		 3173 pr_warning("interface: %s is already stopped\n",
3174 pkt_dev->odevname);
222f1806
LC		 3175 return -EINVAL;
3176 }
1da177e4 3177
3bda06a3
SH		 3178 kfree_skb(pkt_dev->skb);
3179 pkt_dev->skb = NULL;
fd29cf72 3180 pkt_dev->stopped_at = ktime_now();
222f1806 3181 pkt_dev->running = 0;
1da177e4 3182
95ed63f7 3183 show_results(pkt_dev, nr_frags);
1da177e4 3184
222f1806 3185 return 0;
1da177e4
LT		 3186}
3187
222f1806 3188static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3189{
c26a8016 3190 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3191
1da177e4
LT		 3192 if_lock(t);
3193
c26a8016
LC		 3194 list_for_each_entry(pkt_dev, &t->if_list, list) {
3195 if (!pkt_dev->running)
222f1806
LC		 3196 continue;
3197 if (best == NULL)
c26a8016 3198 best = pkt_dev;
fd29cf72 3199 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3200 best = pkt_dev;
1da177e4
LT		 3201 }
3202 if_unlock(t);
222f1806 3203 return best;
1da177e4
LT		 3204}
3205
222f1806
LC		 3206static void pktgen_stop(struct pktgen_thread *t)
3207{
c26a8016 3208 struct pktgen_dev *pkt_dev;
1da177e4 3209
f9467eae 3210 func_enter();
1da177e4 3211
222f1806 3212 if_lock(t);
1da177e4 3213
c26a8016
LC		 3214 list_for_each_entry(pkt_dev, &t->if_list, list) {
3215 pktgen_stop_device(pkt_dev);
95ed63f7 3216 }
1da177e4 3217
222f1806 3218 if_unlock(t);
1da177e4
LT		 3219}
3220
95ed63f7
AK		 3221/*
3222 * one of our devices needs to be removed - find it
3223 * and remove it
3224 */
3225static void pktgen_rem_one_if(struct pktgen_thread *t)
3226{
c26a8016
LC		 3227 struct list_head *q, *n;
3228 struct pktgen_dev *cur;
95ed63f7 3229
f9467eae 3230 func_enter();
95ed63f7
AK		 3231
3232 if_lock(t);
3233
c26a8016
LC		 3234 list_for_each_safe(q, n, &t->if_list) {
3235 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3236
222f1806
LC		 3237 if (!cur->removal_mark)
3238 continue;
95ed63f7 3239
86dc1ad2 3240 kfree_skb(cur->skb);
95ed63f7
AK		 3241 cur->skb = NULL;
3242
3243 pktgen_remove_device(t, cur);
3244
3245 break;
3246 }
3247
3248 if_unlock(t);
3249}
3250
222f1806 3251static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3252{
c26a8016
LC		 3253 struct list_head *q, *n;
3254 struct pktgen_dev *cur;
222f1806 3255
f9467eae
JP		 3256 func_enter();
3257
222f1806 3258 /* Remove all devices, free mem */
95ed63f7 3259
222f1806 3260 if_lock(t);
1da177e4 3261
c26a8016
LC		 3262 list_for_each_safe(q, n, &t->if_list) {
3263 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3264
86dc1ad2 3265 kfree_skb(cur->skb);
95ed63f7
AK		 3266 cur->skb = NULL;
3267
1da177e4
LT		 3268 pktgen_remove_device(t, cur);
3269 }
3270
222f1806 3271 if_unlock(t);
1da177e4
LT		 3272}
3273
222f1806 3274static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3275{
222f1806 3276 /* Remove from the thread list */
1da177e4 3277
ee74baa7 3278 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3279
1da177e4
LT		 3280}
3281
ef87979c 3282static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3283{
fd29cf72 3284 ktime_t idle_start = ktime_now();
ef87979c
SH		 3285 schedule();
3286 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3287}
3791decb 3288
ef87979c
SH		 3289static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3290{
3291 ktime_t idle_start = ktime_now();
3791decb 3292
ef87979c
SH		 3293 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3294 if (signal_pending(current))
3295 break;
3296
3297 if (need_resched())
3298 pktgen_resched(pkt_dev);
3299 else
3300 cpu_relax();
3301 }
fd29cf72 3302 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3303}
3304
475ac1e4 3305static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3306{
00829823 3307 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3308 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3309 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3310 struct netdev_queue *txq;
fd2ea0a7 3311 u16 queue_map;
1da177e4
LT		 3312 int ret;
3313
ef87979c
SH		 3314 /* If device is offline, then don't send */
3315 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3316 pktgen_stop_device(pkt_dev);
3317 return;
fd2ea0a7
DM		 3318 }
3319
ef87979c
SH		 3320 /* This is max DELAY, this has special meaning of
3321 * "never transmit"
3322 */
3323 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3324 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3325 return;
1da177e4 3326 }
222f1806 3327
ef87979c 3328 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3329 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3330 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3331 /* build a new pkt */
3332 kfree_skb(pkt_dev->skb);
3333
3334 pkt_dev->skb = fill_packet(odev, pkt_dev);
3335 if (pkt_dev->skb == NULL) {
f9467eae 3336 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3337 schedule();
3338 pkt_dev->clone_count--; /* back out increment, OOM */
3339 return;
1da177e4 3340 }
baac8564 3341 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3342 pkt_dev->allocated_skbs++;
3343 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3344 }
95ed63f7 3345
ef87979c
SH		 3346 if (pkt_dev->delay && pkt_dev->last_ok)
3347 spin(pkt_dev, pkt_dev->next_tx);
3348
fd2ea0a7
DM		 3349 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3350 txq = netdev_get_tx_queue(odev, queue_map);
3351
3352 __netif_tx_lock_bh(txq);
5b8db2f5 3353
73466498 3354 if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
ef87979c 3355 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3356 pkt_dev->last_ok = 0;
3357 goto unlock;
3358 }
3359 atomic_inc(&(pkt_dev->skb->users));
3360 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3361
3362 switch (ret) {
3363 case NETDEV_TX_OK:
3364 txq_trans_update(txq);
3365 pkt_dev->last_ok = 1;
3366 pkt_dev->sofar++;
3367 pkt_dev->seq_num++;
baac8564 3368 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3369 break;
f466dba1
JF		 3370 case NET_XMIT_DROP:
3371 case NET_XMIT_CN:
3372 case NET_XMIT_POLICED:
3373 /* skb has been consumed */
3374 pkt_dev->errors++;
3375 break;
ef87979c 3376 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3377 net_info_ratelimited("%s xmit error: %d\n",
3378 pkt_dev->odevname, ret);
ef87979c
SH		 3379 pkt_dev->errors++;
3380 /* fallthru */
3381 case NETDEV_TX_LOCKED:
3382 case NETDEV_TX_BUSY:
3383 /* Retry it next time */
3384 atomic_dec(&(pkt_dev->skb->users));
3385 pkt_dev->last_ok = 0;
222f1806 3386 }
0835acfe 3387unlock:
fd2ea0a7 3388 __netif_tx_unlock_bh(txq);
222f1806 3389
1da177e4
LT		 3390 /* If pkt_dev->count is zero, then run forever */
3391 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3392 pktgen_wait_for_skb(pkt_dev);
222f1806 3393
1da177e4
LT		 3394 /* Done with this */
3395 pktgen_stop_device(pkt_dev);
222f1806 3396 }
222f1806 3397}
1da177e4 3398
4ec93edb 3399/*
1da177e4
LT		 3400 * Main loop of the thread goes here
3401 */
3402
ee74baa7 3403static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3404{
3405 DEFINE_WAIT(wait);
ee74baa7 3406 struct pktgen_thread *t = arg;
222f1806 3407 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3408 int cpu = t->cpu;
1da177e4 3409
ee74baa7 3410 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3411
3412 init_waitqueue_head(&t->queue);
d3ede327 3413 complete(&t->start_done);
1da177e4 3414
f9467eae 3415 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3416
ee74baa7 3417 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3418
83144186
RW		 3419 set_freezable();
3420
ee74baa7
DM		 3421 while (!kthread_should_stop()) {
3422 pkt_dev = next_to_run(t);
1da177e4 3423
ef87979c 3424 if (unlikely(!pkt_dev && t->control == 0)) {
551eaff1
ED		 3425 if (pktgen_exiting)
3426 break;
ef87979c
SH		 3427 wait_event_interruptible_timeout(t->queue,
3428 t->control != 0,
3429 HZ/10);
1b3f720b 3430 try_to_freeze();
ef87979c 3431 continue;
ee74baa7 3432 }
1da177e4 3433
ee74baa7 3434 __set_current_state(TASK_RUNNING);
222f1806 3435
ef87979c 3436 if (likely(pkt_dev)) {
1da177e4
LT		 3437 pktgen_xmit(pkt_dev);
3438
ef87979c
SH		 3439 if (need_resched())
3440 pktgen_resched(pkt_dev);
3441 else
3442 cpu_relax();
3443 }
3444
222f1806 3445 if (t->control & T_STOP) {
1da177e4
LT		 3446 pktgen_stop(t);
3447 t->control &= ~(T_STOP);
3448 }
3449
222f1806 3450 if (t->control & T_RUN) {
1da177e4
LT		 3451 pktgen_run(t);
3452 t->control &= ~(T_RUN);
3453 }
3454
222f1806 3455 if (t->control & T_REMDEVALL) {
1da177e4 3456 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3457 t->control &= ~(T_REMDEVALL);
3458 }
3459
222f1806 3460 if (t->control & T_REMDEV) {
95ed63f7 3461 pktgen_rem_one_if(t);
1da177e4
LT		 3462 t->control &= ~(T_REMDEV);
3463 }
3464
09fe3ef4
AM		 3465 try_to_freeze();
3466
ee74baa7 3467 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3468 }
1da177e4 3469
f9467eae 3470 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3471 pktgen_stop(t);
1da177e4 3472
f9467eae 3473 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3474 pktgen_rem_all_ifs(t);
1da177e4 3475
f9467eae 3476 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3477 pktgen_rem_thread(t);
cdcdbe0b 3478
551eaff1
ED		 3479 /* Wait for kthread_stop */
3480 while (!kthread_should_stop()) {
3481 set_current_state(TASK_INTERRUPTIBLE);
3482 schedule();
3483 }
3484 __set_current_state(TASK_RUNNING);
3485
ee74baa7 3486 return 0;
1da177e4
LT		 3487}
3488
222f1806 3489static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3490 const char *ifname, bool exact)
1da177e4 3491{
c26a8016 3492 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3493 size_t len = strlen(ifname);
222f1806 3494
3e984840 3495 if_lock(t);
c26a8016 3496 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3497 if (strncmp(p->odevname, ifname, len) == 0) {
3498 if (p->odevname[len]) {
3499 if (exact || p->odevname[len] != '@')
3500 continue;
3501 }
c26a8016 3502 pkt_dev = p;
222f1806
LC		 3503 break;
3504 }
222f1806
LC		 3505
3506 if_unlock(t);
f9467eae 3507 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3508 return pkt_dev;
1da177e4
LT		 3509}
3510
4ec93edb
YH		 3511/*
3512 * Adds a dev at front of if_list.
1da177e4
LT		 3513 */
3514
222f1806
LC		 3515static int add_dev_to_thread(struct pktgen_thread *t,
3516 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3517{
3518 int rv = 0;
222f1806
LC		 3519
3520 if_lock(t);
3521
3522 if (pkt_dev->pg_thread) {
f9467eae 3523 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3524 rv = -EBUSY;
3525 goto out;
3526 }
c26a8016
LC		 3527
3528 list_add(&pkt_dev->list, &t->if_list);
222f1806 3529 pkt_dev->pg_thread = t;
1da177e4
LT		 3530 pkt_dev->running = 0;
3531
222f1806
LC		 3532out:
3533 if_unlock(t);
3534 return rv;
1da177e4
LT		 3535}
3536
3537/* Called under thread lock */
3538
222f1806 3539static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3540{
222f1806 3541 struct pktgen_dev *pkt_dev;
39df232f 3542 int err;
3291b9db 3543 int node = cpu_to_node(t->cpu);
222f1806 3544
1da177e4
LT		 3545 /* We don't allow a device to be on several threads */
3546
d50a6b56
SH		 3547 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3548 if (pkt_dev) {
f9467eae 3549 pr_err("ERROR: interface already used\n");
222f1806
LC		 3550 return -EBUSY;
3551 }
d50a6b56 3552
3291b9db 3553 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3554 if (!pkt_dev)
3555 return -ENOMEM;
3556
593f63b0 3557 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3558 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3559 node);
d50a6b56
SH		 3560 if (pkt_dev->flows == NULL) {
3561 kfree(pkt_dev);
3562 return -ENOMEM;
3563 }
d50a6b56 3564
95ed63f7 3565 pkt_dev->removal_mark = 0;
d50a6b56 3566 pkt_dev->nfrags = 0;
fd29cf72 3567 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3568 pkt_dev->count = pg_count_d;
3569 pkt_dev->sofar = 0;
222f1806 3570 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3571 pkt_dev->udp_src_max = 9;
3572 pkt_dev->udp_dst_min = 9;
3573 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3574 pkt_dev->vlan_p = 0;
3575 pkt_dev->vlan_cfi = 0;
3576 pkt_dev->vlan_id = 0xffff;
3577 pkt_dev->svlan_p = 0;
3578 pkt_dev->svlan_cfi = 0;
3579 pkt_dev->svlan_id = 0xffff;
e99b99b4 3580 pkt_dev->node = -1;
34954ddc 3581
39df232f
SH		 3582 err = pktgen_setup_dev(pkt_dev, ifname);
3583 if (err)
3584 goto out1;
d8873315
NH		 3585 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3586 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3587
5efdccbc
DL		 3588 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3589 &pktgen_if_fops, pkt_dev);
39df232f 3590 if (!pkt_dev->entry) {
f9467eae 3591 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3592 PG_PROC_DIR, ifname);
39df232f
SH		 3593 err = -EINVAL;
3594 goto out2;
d50a6b56 3595 }
a553e4a6
JHS		 3596#ifdef CONFIG_XFRM
3597 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3598 pkt_dev->ipsproto = IPPROTO_ESP;
3599#endif
d50a6b56
SH		 3600
3601 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3602out2:
3603 dev_put(pkt_dev->odev);
3604out1:
a553e4a6
JHS		 3605#ifdef CONFIG_XFRM
3606 free_SAs(pkt_dev);
3607#endif
1d0ebfe7 3608 vfree(pkt_dev->flows);
39df232f
SH		 3609 kfree(pkt_dev);
3610 return err;
1da177e4
LT		 3611}
3612
ee74baa7 3613static int __init pktgen_create_thread(int cpu)
1da177e4 3614{
cdcdbe0b 3615 struct pktgen_thread *t;
d50a6b56 3616 struct proc_dir_entry *pe;
ee74baa7 3617 struct task_struct *p;
222f1806 3618
3291b9db
ED		 3619 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3620 cpu_to_node(cpu));
222f1806 3621 if (!t) {
f9467eae 3622 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3623 return -ENOMEM;
3624 }
3625
222f1806 3626 spin_lock_init(&t->if_lock);
1da177e4 3627 t->cpu = cpu;
222f1806 3628
ee74baa7
DM		 3629 INIT_LIST_HEAD(&t->if_list);
3630
3631 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3632 init_completion(&t->start_done);
ee74baa7 3633
94dcf29a
ED		 3634 p = kthread_create_on_node(pktgen_thread_worker,
3635 t,
3636 cpu_to_node(cpu),
3637 "kpktgend_%d", cpu);
ee74baa7 3638 if (IS_ERR(p)) {
f9467eae 3639 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3640 list_del(&t->th_list);
3641 kfree(t);
3642 return PTR_ERR(p);
3643 }
3644 kthread_bind(p, cpu);
3645 t->tsk = p;
3646
5efdccbc
DL		 3647 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3648 &pktgen_thread_fops, t);
222f1806 3649 if (!pe) {
f9467eae 3650 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3651 PG_PROC_DIR, t->tsk->comm);
3652 kthread_stop(p);
3653 list_del(&t->th_list);
222f1806
LC		 3654 kfree(t);
3655 return -EINVAL;
3656 }
d50a6b56 3657
ee74baa7 3658 wake_up_process(p);
d3ede327 3659 wait_for_completion(&t->start_done);
1da177e4
LT		 3660
3661 return 0;
3662}
3663
4ec93edb
YH		 3664/*
3665 * Removes a device from the thread if_list.
1da177e4 3666 */
222f1806
LC		 3667static void _rem_dev_from_if_list(struct pktgen_thread *t,
3668 struct pktgen_dev *pkt_dev)
1da177e4 3669{
c26a8016
LC		 3670 struct list_head *q, *n;
3671 struct pktgen_dev *p;
1da177e4 3672
c26a8016
LC		 3673 list_for_each_safe(q, n, &t->if_list) {
3674 p = list_entry(q, struct pktgen_dev, list);
3675 if (p == pkt_dev)
3676 list_del(&p->list);
1da177e4
LT		 3677 }
3678}
3679
222f1806
LC		 3680static int pktgen_remove_device(struct pktgen_thread *t,
3681 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3682{
3683
f9467eae 3684 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3685
222f1806 3686 if (pkt_dev->running) {
f9467eae 3687 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3688 pktgen_stop_device(pkt_dev);
3689 }
3690
3691 /* Dis-associate from the interface */
1da177e4
LT		 3692
3693 if (pkt_dev->odev) {
3694 dev_put(pkt_dev->odev);
222f1806
LC		 3695 pkt_dev->odev = NULL;
3696 }
3697
1da177e4
LT		 3698 /* And update the thread if_list */
3699
3700 _rem_dev_from_if_list(t, pkt_dev);
3701
39df232f
SH		 3702 if (pkt_dev->entry)
3703 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3704
a553e4a6
JHS		 3705#ifdef CONFIG_XFRM
3706 free_SAs(pkt_dev);
3707#endif
1d0ebfe7 3708 vfree(pkt_dev->flows);
26ad7879
ED		 3709 if (pkt_dev->page)
3710 put_page(pkt_dev->page);
1da177e4 3711 kfree(pkt_dev);
222f1806 3712 return 0;
1da177e4
LT		 3713}
3714
222f1806 3715static int __init pg_init(void)
1da177e4
LT		 3716{
3717 int cpu;
d50a6b56 3718 struct proc_dir_entry *pe;
ce14f894 3719 int ret = 0;
1da177e4 3720
f9467eae 3721 pr_info("%s", version);
1da177e4 3722
457c4cbc 3723 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3724 if (!pg_proc_dir)
3725 return -ENODEV;
1da177e4 3726
25296d59 3727 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3728 if (pe == NULL) {
f9467eae 3729 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
ce14f894
WC		 3730 ret = -EINVAL;
3731 goto remove_dir;
222f1806 3732 }
1da177e4 3733
1da177e4 3734 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3735
670c02c2 3736 for_each_online_cpu(cpu) {
8024bb24 3737 int err;
1da177e4 3738
ee74baa7 3739 err = pktgen_create_thread(cpu);
8024bb24 3740 if (err)
f9467eae
JP		 3741 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3742 cpu, err);
222f1806 3743 }
8024bb24
LC		 3744
3745 if (list_empty(&pktgen_threads)) {
f9467eae 3746 pr_err("ERROR: Initialization failed for all threads\n");
ce14f894
WC		 3747 ret = -ENODEV;
3748 goto unregister;
8024bb24
LC		 3749 }
3750
222f1806 3751 return 0;
ce14f894
WC		 3752
3753 unregister:
3754 unregister_netdevice_notifier(&pktgen_notifier_block);
3755 remove_proc_entry(PGCTRL, pg_proc_dir);
3756 remove_dir:
3757 proc_net_remove(&init_net, PG_PROC_DIR);
3758 return ret;
1da177e4
LT		 3759}
3760
3761static void __exit pg_cleanup(void)
3762{
cdcdbe0b
LC		 3763 struct pktgen_thread *t;
3764 struct list_head *q, *n;
d4b11335 3765 LIST_HEAD(list);
1da177e4 3766
222f1806 3767 /* Stop all interfaces & threads */
551eaff1 3768 pktgen_exiting = true;
1da177e4 3769
c57b5468 3770 mutex_lock(&pktgen_thread_lock);
d4b11335 3771 list_splice_init(&pktgen_threads, &list);
c57b5468
ED		 3772 mutex_unlock(&pktgen_thread_lock);
3773
3774 list_for_each_safe(q, n, &list) {
cdcdbe0b 3775 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3776 list_del(&t->th_list);
ee74baa7
DM		 3777 kthread_stop(t->tsk);
3778 kfree(t);
222f1806 3779 }
1da177e4 3780
222f1806 3781 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3782 unregister_netdevice_notifier(&pktgen_notifier_block);
3783
222f1806 3784 /* Clean up proc file system */
d50a6b56 3785 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3786 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3787}
3788
1da177e4
LT		 3789module_init(pg_init);
3790module_exit(pg_cleanup);
3791
c3d2f52d 3792MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3793MODULE_DESCRIPTION("Packet Generator tool");
3794MODULE_LICENSE("GPL");
c3d2f52d 3795MODULE_VERSION(VERSION);
1da177e4 3796module_param(pg_count_d, int, 0);
c3d2f52d 3797MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3798module_param(pg_delay_d, int, 0);
c3d2f52d 3799MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3800module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3801MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3802module_param(debug, int, 0);
c3d2f52d 3803MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
kernel source for telekom puls (alcatel/mediatek)