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dql: Dynamic queue limits
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
268bb0ce 159#include <linux/prefetch.h>
457c4cbc 160#include <net/net_namespace.h>
1da177e4
LT		 161#include <net/checksum.h>
162#include <net/ipv6.h>
163#include <net/addrconf.h>
a553e4a6
JHS		 164#ifdef CONFIG_XFRM
165#include <net/xfrm.h>
166#endif
1da177e4
LT		 167#include <asm/byteorder.h>
168#include <linux/rcupdate.h>
1977f032 169#include <linux/bitops.h>
63adc6fb
SH		 170#include <linux/io.h>
171#include <linux/timex.h>
172#include <linux/uaccess.h>
1da177e4 173#include <asm/dma.h>
222f1806 174#include <asm/div64.h> /* do_div */
1da177e4 175
43d28b65 176#define VERSION "2.74"
1da177e4 177#define IP_NAME_SZ 32
ca6549af 178#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 179#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 180
f9467eae
JP		 181#define func_enter() pr_debug("entering %s\n", __func__);
182
1da177e4 183/* Device flag bits */
222f1806
LC		 184#define F_IPSRC_RND (1<<0) /* IP-Src Random */
185#define F_IPDST_RND (1<<1) /* IP-Dst Random */
186#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
187#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
188#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
189#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
190#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
191#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 192#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 193#define F_VID_RND (1<<9) /* Random VLAN ID */
194#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 195#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 196#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 197#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 198#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 199#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 200
201/* Thread control flag bits */
6b80d6a6
SH		 202#define T_STOP (1<<0) /* Stop run */
203#define T_RUN (1<<1) /* Start run */
204#define T_REMDEVALL (1<<2) /* Remove all devs */
205#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 206
1da177e4
LT		 207/* If lock -- can be removed after some work */
208#define if_lock(t) spin_lock(&(t->if_lock));
209#define if_unlock(t) spin_unlock(&(t->if_lock));
210
211/* Used to help with determining the pkts on receive */
212#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 213#define PG_PROC_DIR "pktgen"
214#define PGCTRL "pgctrl"
63adc6fb 215static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 216
217#define MAX_CFLOWS 65536
218
34954ddc
FF		 219#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
220#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
221
222f1806 222struct flow_state {
252e3346 223 __be32 cur_daddr;
222f1806 224 int count;
a553e4a6
JHS		 225#ifdef CONFIG_XFRM
226 struct xfrm_state *x;
227#endif
007a531b 228 __u32 flags;
1da177e4
LT		 229};
230
007a531b
JHS		 231/* flow flag bits */
232#define F_INIT (1<<0) /* flow has been initialized */
233
1da177e4 234struct pktgen_dev {
1da177e4
LT		 235 /*
236 * Try to keep frequent/infrequent used vars. separated.
237 */
39df232f
SH		 238 struct proc_dir_entry *entry; /* proc file */
239 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 240 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 241
63adc6fb 242 int running; /* if false, the test will stop */
1da177e4 243
222f1806
LC		 244 /* If min != max, then we will either do a linear iteration, or
245 * we will do a random selection from within the range.
246 */
247 __u32 flags;
95ed63f7
AK		 248 int removal_mark; /* non-zero => the device is marked for
249 * removal by worker thread */
1da177e4 250
222f1806
LC		 251 int min_pkt_size; /* = ETH_ZLEN; */
252 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 253 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 254 int nfrags;
26ad7879 255 struct page *page;
fd29cf72
SH		 256 u64 delay; /* nano-seconds */
257
222f1806
LC		 258 __u64 count; /* Default No packets to send */
259 __u64 sofar; /* How many pkts we've sent so far */
260 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 261 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 262
263 /* runtime counters relating to clone_skb */
222f1806
LC		 264
265 __u64 allocated_skbs;
266 __u32 clone_count;
267 int last_ok; /* Was last skb sent?
63adc6fb
SH		 268 * Or a failed transmit of some sort?
269 * This will keep sequence numbers in order
222f1806 270 */
fd29cf72
SH		 271 ktime_t next_tx;
272 ktime_t started_at;
273 ktime_t stopped_at;
274 u64 idle_acc; /* nano-seconds */
275
222f1806
LC		 276 __u32 seq_num;
277
63adc6fb
SH		 278 int clone_skb; /*
279 * Use multiple SKBs during packet gen.
280 * If this number is greater than 1, then
281 * that many copies of the same packet will be
282 * sent before a new packet is allocated.
283 * If you want to send 1024 identical packets
284 * before creating a new packet,
285 * set clone_skb to 1024.
222f1806
LC		 286 */
287
288 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
291 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292
293 struct in6_addr in6_saddr;
294 struct in6_addr in6_daddr;
295 struct in6_addr cur_in6_daddr;
296 struct in6_addr cur_in6_saddr;
1da177e4 297 /* For ranges */
222f1806
LC		 298 struct in6_addr min_in6_daddr;
299 struct in6_addr max_in6_daddr;
300 struct in6_addr min_in6_saddr;
301 struct in6_addr max_in6_saddr;
302
303 /* If we're doing ranges, random or incremental, then this
304 * defines the min/max for those ranges.
305 */
252e3346
AV		 306 __be32 saddr_min; /* inclusive, source IP address */
307 __be32 saddr_max; /* exclusive, source IP address */
308 __be32 daddr_min; /* inclusive, dest IP address */
309 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 310
311 __u16 udp_src_min; /* inclusive, source UDP port */
312 __u16 udp_src_max; /* exclusive, source UDP port */
313 __u16 udp_dst_min; /* inclusive, dest UDP port */
314 __u16 udp_dst_max; /* exclusive, dest UDP port */
315
1ca7768c 316 /* DSCP + ECN */
63adc6fb
SH		 317 __u8 tos; /* six MSB of (former) IPv4 TOS
318 are for dscp codepoint */
319 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
320 (see RFC 3260, sec. 4) */
1ca7768c 321
ca6549af
SW		 322 /* MPLS */
323 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
324 __be32 labels[MAX_MPLS_LABELS];
325
34954ddc
FF		 326 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
327 __u8 vlan_p;
328 __u8 vlan_cfi;
329 __u16 vlan_id; /* 0xffff means no vlan tag */
330
331 __u8 svlan_p;
332 __u8 svlan_cfi;
333 __u16 svlan_id; /* 0xffff means no svlan tag */
334
222f1806
LC		 335 __u32 src_mac_count; /* How many MACs to iterate through */
336 __u32 dst_mac_count; /* How many MACs to iterate through */
337
338 unsigned char dst_mac[ETH_ALEN];
339 unsigned char src_mac[ETH_ALEN];
340
341 __u32 cur_dst_mac_offset;
342 __u32 cur_src_mac_offset;
252e3346
AV		 343 __be32 cur_saddr;
344 __be32 cur_daddr;
66ed1e5e 345 __u16 ip_id;
222f1806
LC		 346 __u16 cur_udp_dst;
347 __u16 cur_udp_src;
45b270f8 348 __u16 cur_queue_map;
222f1806 349 __u32 cur_pkt_size;
baac8564 350 __u32 last_pkt_size;
222f1806
LC		 351
352 __u8 hh[14];
353 /* = {
354 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
355
356 We fill in SRC address later
357 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
358 0x08, 0x00
359 };
360 */
361 __u16 pad; /* pad out the hh struct to an even 16 bytes */
362
63adc6fb 363 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 364 * are transmitting the same one multiple times
365 */
63adc6fb
SH		 366 struct net_device *odev; /* The out-going device.
367 * Note that the device should have it's
368 * pg_info pointer pointing back to this
369 * device.
370 * Set when the user specifies the out-going
371 * device name (not when the inject is
372 * started as it used to do.)
373 */
593f63b0 374 char odevname[32];
1da177e4 375 struct flow_state *flows;
222f1806
LC		 376 unsigned cflows; /* Concurrent flows (config) */
377 unsigned lflow; /* Flow length (config) */
378 unsigned nflows; /* accumulated flows (stats) */
007a531b 379 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 380
381 u16 queue_map_min;
382 u16 queue_map_max;
9e50e3ac 383 __u32 skb_priority; /* skb priority field */
e99b99b4 384 int node; /* Memory node */
45b270f8 385
a553e4a6
JHS		 386#ifdef CONFIG_XFRM
387 __u8 ipsmode; /* IPSEC mode (config) */
388 __u8 ipsproto; /* IPSEC type (config) */
389#endif
39df232f 390 char result[512];
1da177e4
LT		 391};
392
393struct pktgen_hdr {
252e3346
AV		 394 __be32 pgh_magic;
395 __be32 seq_num;
396 __be32 tv_sec;
397 __be32 tv_usec;
1da177e4
LT		 398};
399
551eaff1
ED		 400static bool pktgen_exiting __read_mostly;
401
1da177e4 402struct pktgen_thread {
63adc6fb 403 spinlock_t if_lock; /* for list of devices */
c26a8016 404 struct list_head if_list; /* All device here */
cdcdbe0b 405 struct list_head th_list;
ee74baa7 406 struct task_struct *tsk;
222f1806 407 char result[512];
222f1806 408
63adc6fb
SH		 409 /* Field for thread to receive "posted" events terminate,
410 stop ifs etc. */
222f1806
LC		 411
412 u32 control;
1da177e4
LT		 413 int cpu;
414
222f1806 415 wait_queue_head_t queue;
d3ede327 416 struct completion start_done;
1da177e4
LT		 417};
418
419#define REMOVE 1
420#define FIND 0
421
fd29cf72 422static inline ktime_t ktime_now(void)
1da177e4 423{
fd29cf72
SH		 424 struct timespec ts;
425 ktime_get_ts(&ts);
426
427 return timespec_to_ktime(ts);
1da177e4
LT		 428}
429
fd29cf72
SH		 430/* This works even if 32 bit because of careful byte order choice */
431static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 432{
fd29cf72 433 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 434}
435
c3d2f52d 436static const char version[] =
f9467eae
JP		 437 "Packet Generator for packet performance testing. "
438 "Version: " VERSION "\n";
1da177e4 439
222f1806
LC		 440static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
441static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
442static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 443 const char *ifname, bool exact);
1da177e4
LT		 444static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
445static void pktgen_run_all_threads(void);
eb37b41c 446static void pktgen_reset_all_threads(void);
1da177e4 447static void pktgen_stop_all_threads_ifs(void);
3bda06a3 448
222f1806 449static void pktgen_stop(struct pktgen_thread *t);
1da177e4 450static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 451
222f1806 452static unsigned int scan_ip6(const char *s, char ip[16]);
1da177e4
LT		 453
454/* Module parameters, defaults. */
65c5b786
SH		 455static int pg_count_d __read_mostly = 1000;
456static int pg_delay_d __read_mostly;
457static int pg_clone_skb_d __read_mostly;
458static int debug __read_mostly;
1da177e4 459
222fa076 460static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 461static LIST_HEAD(pktgen_threads);
1da177e4 462
1da177e4
LT		 463static struct notifier_block pktgen_notifier_block = {
464 .notifier_call = pktgen_device_event,
465};
466
1da177e4 467/*
4ec93edb 468 * /proc handling functions
1da177e4
LT		 469 *
470 */
471
d50a6b56 472static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 473{
c3d2f52d 474 seq_puts(seq, version);
d50a6b56 475 return 0;
1da177e4
LT		 476}
477
63adc6fb
SH		 478static ssize_t pgctrl_write(struct file *file, const char __user *buf,
479 size_t count, loff_t *ppos)
1da177e4 480{
1da177e4 481 int err = 0;
d50a6b56 482 char data[128];
1da177e4 483
222f1806
LC		 484 if (!capable(CAP_NET_ADMIN)) {
485 err = -EPERM;
1da177e4 486 goto out;
222f1806 487 }
1da177e4 488
d50a6b56
SH		 489 if (count > sizeof(data))
490 count = sizeof(data);
1da177e4 491
1da177e4 492 if (copy_from_user(data, buf, count)) {
b4099fab 493 err = -EFAULT;
d50a6b56 494 goto out;
222f1806
LC		 495 }
496 data[count - 1] = 0; /* Make string */
1da177e4 497
222f1806 498 if (!strcmp(data, "stop"))
1da177e4
LT		 499 pktgen_stop_all_threads_ifs();
500
222f1806 501 else if (!strcmp(data, "start"))
1da177e4
LT		 502 pktgen_run_all_threads();
503
eb37b41c
JB		 504 else if (!strcmp(data, "reset"))
505 pktgen_reset_all_threads();
506
222f1806 507 else
f9467eae 508 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 509
510 err = count;
511
222f1806
LC		 512out:
513 return err;
1da177e4
LT		 514}
515
d50a6b56
SH		 516static int pgctrl_open(struct inode *inode, struct file *file)
517{
518 return single_open(file, pgctrl_show, PDE(inode)->data);
519}
520
9a32144e 521static const struct file_operations pktgen_fops = {
222f1806
LC		 522 .owner = THIS_MODULE,
523 .open = pgctrl_open,
524 .read = seq_read,
525 .llseek = seq_lseek,
526 .write = pgctrl_write,
527 .release = single_release,
d50a6b56
SH		 528};
529
530static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 531{
648fda74 532 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 533 ktime_t stopped;
534 u64 idle;
222f1806
LC		 535
536 seq_printf(seq,
537 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
538 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
539 pkt_dev->max_pkt_size);
540
541 seq_printf(seq,
fd29cf72
SH		 542 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
543 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 544 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 545
546 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
547 pkt_dev->lflow);
548
45b270f8
RO		 549 seq_printf(seq,
550 " queue_map_min: %u queue_map_max: %u\n",
551 pkt_dev->queue_map_min,
552 pkt_dev->queue_map_max);
553
9e50e3ac
JF		 554 if (pkt_dev->skb_priority)
555 seq_printf(seq, " skb_priority: %u\n",
556 pkt_dev->skb_priority);
557
222f1806 558 if (pkt_dev->flags & F_IPV6) {
222f1806 559 seq_printf(seq,
47a0200d
AD		 560 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
561 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
562 &pkt_dev->in6_saddr,
563 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
564 &pkt_dev->in6_daddr,
565 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 566 } else {
567 seq_printf(seq,
568 " dst_min: %s dst_max: %s\n",
569 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 570 seq_printf(seq,
63adc6fb
SH		 571 " src_min: %s src_max: %s\n",
572 pkt_dev->src_min, pkt_dev->src_max);
573 }
1da177e4 574
222f1806 575 seq_puts(seq, " src_mac: ");
1da177e4 576
e174961c
JB		 577 seq_printf(seq, "%pM ",
578 is_zero_ether_addr(pkt_dev->src_mac) ?
579 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 580
581 seq_printf(seq, "dst_mac: ");
e174961c 582 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 583
584 seq_printf(seq,
63adc6fb
SH		 585 " udp_src_min: %d udp_src_max: %d"
586 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 587 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
588 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
589
590 seq_printf(seq,
ca6549af 591 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 592 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 593
ca6549af
SW		 594 if (pkt_dev->nr_labels) {
595 unsigned i;
596 seq_printf(seq, " mpls: ");
e71a4783 597 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 598 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
599 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
600 }
601
63adc6fb 602 if (pkt_dev->vlan_id != 0xffff)
34954ddc 603 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 604 pkt_dev->vlan_id, pkt_dev->vlan_p,
605 pkt_dev->vlan_cfi);
34954ddc 606
63adc6fb 607 if (pkt_dev->svlan_id != 0xffff)
34954ddc 608 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 609 pkt_dev->svlan_id, pkt_dev->svlan_p,
610 pkt_dev->svlan_cfi);
34954ddc 611
63adc6fb 612 if (pkt_dev->tos)
1ca7768c 613 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 614
63adc6fb 615 if (pkt_dev->traffic_class)
1ca7768c 616 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 617
e99b99b4
RO		 618 if (pkt_dev->node >= 0)
619 seq_printf(seq, " node: %d\n", pkt_dev->node);
620
ca6549af
SW		 621 seq_printf(seq, " Flags: ");
622
222f1806
LC		 623 if (pkt_dev->flags & F_IPV6)
624 seq_printf(seq, "IPV6 ");
1da177e4 625
222f1806
LC		 626 if (pkt_dev->flags & F_IPSRC_RND)
627 seq_printf(seq, "IPSRC_RND ");
1da177e4 628
222f1806
LC		 629 if (pkt_dev->flags & F_IPDST_RND)
630 seq_printf(seq, "IPDST_RND ");
1da177e4 631
222f1806
LC		 632 if (pkt_dev->flags & F_TXSIZE_RND)
633 seq_printf(seq, "TXSIZE_RND ");
1da177e4 634
222f1806
LC		 635 if (pkt_dev->flags & F_UDPSRC_RND)
636 seq_printf(seq, "UDPSRC_RND ");
1da177e4 637
222f1806
LC		 638 if (pkt_dev->flags & F_UDPDST_RND)
639 seq_printf(seq, "UDPDST_RND ");
1da177e4 640
ca6549af
SW		 641 if (pkt_dev->flags & F_MPLS_RND)
642 seq_printf(seq, "MPLS_RND ");
643
45b270f8
RO		 644 if (pkt_dev->flags & F_QUEUE_MAP_RND)
645 seq_printf(seq, "QUEUE_MAP_RND ");
646
e6fce5b9
RO		 647 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
648 seq_printf(seq, "QUEUE_MAP_CPU ");
649
007a531b
JHS		 650 if (pkt_dev->cflows) {
651 if (pkt_dev->flags & F_FLOW_SEQ)
652 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
653 else
654 seq_printf(seq, "FLOW_RND ");
655 }
656
a553e4a6
JHS		 657#ifdef CONFIG_XFRM
658 if (pkt_dev->flags & F_IPSEC_ON)
659 seq_printf(seq, "IPSEC ");
660#endif
661
222f1806
LC		 662 if (pkt_dev->flags & F_MACSRC_RND)
663 seq_printf(seq, "MACSRC_RND ");
1da177e4 664
222f1806
LC		 665 if (pkt_dev->flags & F_MACDST_RND)
666 seq_printf(seq, "MACDST_RND ");
1da177e4 667
34954ddc
FF		 668 if (pkt_dev->flags & F_VID_RND)
669 seq_printf(seq, "VID_RND ");
670
671 if (pkt_dev->flags & F_SVID_RND)
672 seq_printf(seq, "SVID_RND ");
673
e99b99b4
RO		 674 if (pkt_dev->flags & F_NODE)
675 seq_printf(seq, "NODE_ALLOC ");
676
222f1806
LC		 677 seq_puts(seq, "\n");
678
fd29cf72
SH		 679 /* not really stopped, more like last-running-at */
680 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
681 idle = pkt_dev->idle_acc;
682 do_div(idle, NSEC_PER_USEC);
1da177e4 683
222f1806 684 seq_printf(seq,
fd29cf72 685 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 686 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 687 (unsigned long long)pkt_dev->errors);
688
689 seq_printf(seq,
690 " started: %lluus stopped: %lluus idle: %lluus\n",
691 (unsigned long long) ktime_to_us(pkt_dev->started_at),
692 (unsigned long long) ktime_to_us(stopped),
693 (unsigned long long) idle);
1da177e4 694
222f1806
LC		 695 seq_printf(seq,
696 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 697 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
698 pkt_dev->cur_src_mac_offset);
1da177e4 699
222f1806 700 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 701 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
702 &pkt_dev->cur_in6_saddr,
703 &pkt_dev->cur_in6_daddr);
222f1806
LC		 704 } else
705 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 706 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 707
222f1806 708 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 709 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 710
45b270f8
RO		 711 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
712
222f1806 713 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 714
715 if (pkt_dev->result[0])
222f1806 716 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 717 else
222f1806 718 seq_printf(seq, "Result: Idle\n");
1da177e4 719
d50a6b56 720 return 0;
1da177e4
LT		 721}
722
ca6549af 723
63adc6fb
SH		 724static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
725 __u32 *num)
ca6549af
SW		 726{
727 int i = 0;
728 *num = 0;
729
e71a4783 730 for (; i < maxlen; i++) {
82fd5b5d 731 int value;
ca6549af
SW		 732 char c;
733 *num <<= 4;
734 if (get_user(c, &user_buffer[i]))
735 return -EFAULT;
82fd5b5d
AS		 736 value = hex_to_bin(c);
737 if (value >= 0)
738 *num |= value;
ca6549af
SW		 739 else
740 break;
741 }
742 return i;
743}
744
222f1806
LC		 745static int count_trail_chars(const char __user * user_buffer,
746 unsigned int maxlen)
1da177e4
LT		 747{
748 int i;
749
750 for (i = 0; i < maxlen; i++) {
222f1806
LC		 751 char c;
752 if (get_user(c, &user_buffer[i]))
753 return -EFAULT;
754 switch (c) {
1da177e4
LT		 755 case '\"':
756 case '\n':
757 case '\r':
758 case '\t':
759 case ' ':
760 case '=':
761 break;
762 default:
763 goto done;
3ff50b79 764 }
1da177e4
LT		 765 }
766done:
767 return i;
768}
769
222f1806
LC		 770static unsigned long num_arg(const char __user * user_buffer,
771 unsigned long maxlen, unsigned long *num)
1da177e4 772{
d6182223 773 int i;
1da177e4 774 *num = 0;
222f1806 775
d6182223 776 for (i = 0; i < maxlen; i++) {
222f1806
LC		 777 char c;
778 if (get_user(c, &user_buffer[i]))
779 return -EFAULT;
780 if ((c >= '0') && (c <= '9')) {
1da177e4 781 *num *= 10;
222f1806 782 *num += c - '0';
1da177e4
LT		 783 } else
784 break;
785 }
786 return i;
787}
788
222f1806 789static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 790{
d6182223 791 int i;
1da177e4 792
d6182223 793 for (i = 0; i < maxlen; i++) {
222f1806
LC		 794 char c;
795 if (get_user(c, &user_buffer[i]))
796 return -EFAULT;
797 switch (c) {
1da177e4
LT		 798 case '\"':
799 case '\n':
800 case '\r':
801 case '\t':
802 case ' ':
803 goto done_str;
804 break;
805 default:
806 break;
3ff50b79 807 }
1da177e4
LT		 808 }
809done_str:
1da177e4
LT		 810 return i;
811}
812
ca6549af
SW		 813static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
814{
815 unsigned n = 0;
816 char c;
817 ssize_t i = 0;
818 int len;
819
820 pkt_dev->nr_labels = 0;
821 do {
822 __u32 tmp;
1ca7768c 823 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 824 if (len <= 0)
825 return len;
826 pkt_dev->labels[n] = htonl(tmp);
827 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
828 pkt_dev->flags |= F_MPLS_RND;
829 i += len;
830 if (get_user(c, &buffer[i]))
831 return -EFAULT;
832 i++;
833 n++;
834 if (n >= MAX_MPLS_LABELS)
835 return -E2BIG;
e71a4783 836 } while (c == ',');
ca6549af
SW		 837
838 pkt_dev->nr_labels = n;
839 return i;
840}
841
222f1806
LC		 842static ssize_t pktgen_if_write(struct file *file,
843 const char __user * user_buffer, size_t count,
844 loff_t * offset)
1da177e4 845{
8a994a71 846 struct seq_file *seq = file->private_data;
222f1806 847 struct pktgen_dev *pkt_dev = seq->private;
d6182223 848 int i, max, len;
1da177e4
LT		 849 char name[16], valstr[32];
850 unsigned long value = 0;
222f1806
LC		 851 char *pg_result = NULL;
852 int tmp = 0;
1da177e4 853 char buf[128];
222f1806
LC		 854
855 pg_result = &(pkt_dev->result[0]);
856
1da177e4 857 if (count < 1) {
f9467eae 858 pr_warning("wrong command format\n");
1da177e4
LT		 859 return -EINVAL;
860 }
222f1806 861
d6182223
PG		 862 max = count;
863 tmp = count_trail_chars(user_buffer, max);
222f1806 864 if (tmp < 0) {
f9467eae 865 pr_warning("illegal format\n");
222f1806 866 return tmp;
1da177e4 867 }
d6182223 868 i = tmp;
222f1806 869
1da177e4
LT		 870 /* Read variable name */
871
872 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 873 if (len < 0)
222f1806 874 return len;
63adc6fb 875
1da177e4 876 memset(name, 0, sizeof(name));
222f1806 877 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 878 return -EFAULT;
879 i += len;
222f1806
LC		 880
881 max = count - i;
1da177e4 882 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 883 if (len < 0)
884 return len;
885
1da177e4
LT		 886 i += len;
887
888 if (debug) {
86c2c0a8 889 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 890 char tb[copy + 1];
891 if (copy_from_user(tb, user_buffer, copy))
1da177e4 892 return -EFAULT;
448d7b5d 893 tb[copy] = 0;
25a8b254 894 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 895 (unsigned long)count, tb);
896 }
1da177e4
LT		 897
898 if (!strcmp(name, "min_pkt_size")) {
899 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 900 if (len < 0)
222f1806 901 return len;
63adc6fb 902
1da177e4 903 i += len;
222f1806
LC		 904 if (value < 14 + 20 + 8)
905 value = 14 + 20 + 8;
906 if (value != pkt_dev->min_pkt_size) {
907 pkt_dev->min_pkt_size = value;
908 pkt_dev->cur_pkt_size = value;
909 }
910 sprintf(pg_result, "OK: min_pkt_size=%u",
911 pkt_dev->min_pkt_size);
1da177e4
LT		 912 return count;
913 }
914
222f1806 915 if (!strcmp(name, "max_pkt_size")) {
1da177e4 916 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 917 if (len < 0)
222f1806 918 return len;
63adc6fb 919
1da177e4 920 i += len;
222f1806
LC		 921 if (value < 14 + 20 + 8)
922 value = 14 + 20 + 8;
923 if (value != pkt_dev->max_pkt_size) {
924 pkt_dev->max_pkt_size = value;
925 pkt_dev->cur_pkt_size = value;
926 }
927 sprintf(pg_result, "OK: max_pkt_size=%u",
928 pkt_dev->max_pkt_size);
1da177e4
LT		 929 return count;
930 }
931
222f1806 932 /* Shortcut for min = max */
1da177e4
LT		 933
934 if (!strcmp(name, "pkt_size")) {
935 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 936 if (len < 0)
222f1806 937 return len;
63adc6fb 938
1da177e4 939 i += len;
222f1806
LC		 940 if (value < 14 + 20 + 8)
941 value = 14 + 20 + 8;
942 if (value != pkt_dev->min_pkt_size) {
943 pkt_dev->min_pkt_size = value;
944 pkt_dev->max_pkt_size = value;
945 pkt_dev->cur_pkt_size = value;
946 }
1da177e4
LT		 947 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
948 return count;
949 }
950
222f1806 951 if (!strcmp(name, "debug")) {
1da177e4 952 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 953 if (len < 0)
222f1806 954 return len;
63adc6fb 955
1da177e4 956 i += len;
222f1806 957 debug = value;
1da177e4
LT		 958 sprintf(pg_result, "OK: debug=%u", debug);
959 return count;
960 }
961
222f1806 962 if (!strcmp(name, "frags")) {
1da177e4 963 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 964 if (len < 0)
222f1806 965 return len;
63adc6fb 966
1da177e4
LT		 967 i += len;
968 pkt_dev->nfrags = value;
969 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
970 return count;
971 }
972 if (!strcmp(name, "delay")) {
973 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 974 if (len < 0)
222f1806 975 return len;
63adc6fb 976
1da177e4 977 i += len;
fd29cf72
SH		 978 if (value == 0x7FFFFFFF)
979 pkt_dev->delay = ULLONG_MAX;
980 else
9240d715 981 pkt_dev->delay = (u64)value;
fd29cf72
SH		 982
983 sprintf(pg_result, "OK: delay=%llu",
984 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 985 return count;
986 }
43d28b65
DT		 987 if (!strcmp(name, "rate")) {
988 len = num_arg(&user_buffer[i], 10, &value);
989 if (len < 0)
990 return len;
991
992 i += len;
993 if (!value)
994 return len;
995 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
996 if (debug)
f9467eae 997 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 998
999 sprintf(pg_result, "OK: rate=%lu", value);
1000 return count;
1001 }
1002 if (!strcmp(name, "ratep")) {
1003 len = num_arg(&user_buffer[i], 10, &value);
1004 if (len < 0)
1005 return len;
1006
1007 i += len;
1008 if (!value)
1009 return len;
1010 pkt_dev->delay = NSEC_PER_SEC/value;
1011 if (debug)
f9467eae 1012 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1013
1014 sprintf(pg_result, "OK: rate=%lu", value);
1015 return count;
1016 }
222f1806 1017 if (!strcmp(name, "udp_src_min")) {
1da177e4 1018 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1019 if (len < 0)
222f1806 1020 return len;
63adc6fb 1021
1da177e4 1022 i += len;
222f1806
LC		 1023 if (value != pkt_dev->udp_src_min) {
1024 pkt_dev->udp_src_min = value;
1025 pkt_dev->cur_udp_src = value;
1026 }
1da177e4
LT		 1027 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1028 return count;
1029 }
222f1806 1030 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1031 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1032 if (len < 0)
222f1806 1033 return len;
63adc6fb 1034
1da177e4 1035 i += len;
222f1806
LC		 1036 if (value != pkt_dev->udp_dst_min) {
1037 pkt_dev->udp_dst_min = value;
1038 pkt_dev->cur_udp_dst = value;
1039 }
1da177e4
LT		 1040 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1041 return count;
1042 }
222f1806 1043 if (!strcmp(name, "udp_src_max")) {
1da177e4 1044 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1045 if (len < 0)
222f1806 1046 return len;
63adc6fb 1047
1da177e4 1048 i += len;
222f1806
LC		 1049 if (value != pkt_dev->udp_src_max) {
1050 pkt_dev->udp_src_max = value;
1051 pkt_dev->cur_udp_src = value;
1052 }
1da177e4
LT		 1053 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1054 return count;
1055 }
222f1806 1056 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1057 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1058 if (len < 0)
222f1806 1059 return len;
63adc6fb 1060
1da177e4 1061 i += len;
222f1806
LC		 1062 if (value != pkt_dev->udp_dst_max) {
1063 pkt_dev->udp_dst_max = value;
1064 pkt_dev->cur_udp_dst = value;
1065 }
1da177e4
LT		 1066 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1067 return count;
1068 }
1069 if (!strcmp(name, "clone_skb")) {
1070 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1071 if (len < 0)
222f1806 1072 return len;
d8873315
NH		 1073 if ((value > 0) &&
1074 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1075 return -ENOTSUPP;
1da177e4 1076 i += len;
222f1806
LC		 1077 pkt_dev->clone_skb = value;
1078
1da177e4
LT		 1079 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1080 return count;
1081 }
1082 if (!strcmp(name, "count")) {
1083 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1084 if (len < 0)
222f1806 1085 return len;
63adc6fb 1086
1da177e4
LT		 1087 i += len;
1088 pkt_dev->count = value;
1089 sprintf(pg_result, "OK: count=%llu",
222f1806 1090 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1091 return count;
1092 }
1093 if (!strcmp(name, "src_mac_count")) {
1094 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1095 if (len < 0)
222f1806 1096 return len;
63adc6fb 1097
1da177e4
LT		 1098 i += len;
1099 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1100 pkt_dev->src_mac_count = value;
1101 pkt_dev->cur_src_mac_offset = 0;
1102 }
1103 sprintf(pg_result, "OK: src_mac_count=%d",
1104 pkt_dev->src_mac_count);
1da177e4
LT		 1105 return count;
1106 }
1107 if (!strcmp(name, "dst_mac_count")) {
1108 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1109 if (len < 0)
222f1806 1110 return len;
63adc6fb 1111
1da177e4
LT		 1112 i += len;
1113 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1114 pkt_dev->dst_mac_count = value;
1115 pkt_dev->cur_dst_mac_offset = 0;
1116 }
1117 sprintf(pg_result, "OK: dst_mac_count=%d",
1118 pkt_dev->dst_mac_count);
1da177e4
LT		 1119 return count;
1120 }
e99b99b4
RO		 1121 if (!strcmp(name, "node")) {
1122 len = num_arg(&user_buffer[i], 10, &value);
1123 if (len < 0)
1124 return len;
1125
1126 i += len;
1127
1128 if (node_possible(value)) {
1129 pkt_dev->node = value;
1130 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1131 if (pkt_dev->page) {
1132 put_page(pkt_dev->page);
1133 pkt_dev->page = NULL;
1134 }
e99b99b4
RO		 1135 }
1136 else
1137 sprintf(pg_result, "ERROR: node not possible");
1138 return count;
1139 }
1da177e4 1140 if (!strcmp(name, "flag")) {
222f1806
LC		 1141 char f[32];
1142 memset(f, 0, 32);
1da177e4 1143 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1144 if (len < 0)
222f1806 1145 return len;
63adc6fb 1146
1da177e4
LT		 1147 if (copy_from_user(f, &user_buffer[i], len))
1148 return -EFAULT;
1149 i += len;
222f1806
LC		 1150 if (strcmp(f, "IPSRC_RND") == 0)
1151 pkt_dev->flags |= F_IPSRC_RND;
1152
1153 else if (strcmp(f, "!IPSRC_RND") == 0)
1154 pkt_dev->flags &= ~F_IPSRC_RND;
1155
1156 else if (strcmp(f, "TXSIZE_RND") == 0)
1157 pkt_dev->flags |= F_TXSIZE_RND;
1158
1159 else if (strcmp(f, "!TXSIZE_RND") == 0)
1160 pkt_dev->flags &= ~F_TXSIZE_RND;
1161
1162 else if (strcmp(f, "IPDST_RND") == 0)
1163 pkt_dev->flags |= F_IPDST_RND;
1164
1165 else if (strcmp(f, "!IPDST_RND") == 0)
1166 pkt_dev->flags &= ~F_IPDST_RND;
1167
1168 else if (strcmp(f, "UDPSRC_RND") == 0)
1169 pkt_dev->flags |= F_UDPSRC_RND;
1170
1171 else if (strcmp(f, "!UDPSRC_RND") == 0)
1172 pkt_dev->flags &= ~F_UDPSRC_RND;
1173
1174 else if (strcmp(f, "UDPDST_RND") == 0)
1175 pkt_dev->flags |= F_UDPDST_RND;
1176
1177 else if (strcmp(f, "!UDPDST_RND") == 0)
1178 pkt_dev->flags &= ~F_UDPDST_RND;
1179
1180 else if (strcmp(f, "MACSRC_RND") == 0)
1181 pkt_dev->flags |= F_MACSRC_RND;
1182
1183 else if (strcmp(f, "!MACSRC_RND") == 0)
1184 pkt_dev->flags &= ~F_MACSRC_RND;
1185
1186 else if (strcmp(f, "MACDST_RND") == 0)
1187 pkt_dev->flags |= F_MACDST_RND;
1188
1189 else if (strcmp(f, "!MACDST_RND") == 0)
1190 pkt_dev->flags &= ~F_MACDST_RND;
1191
ca6549af
SW		 1192 else if (strcmp(f, "MPLS_RND") == 0)
1193 pkt_dev->flags |= F_MPLS_RND;
1194
1195 else if (strcmp(f, "!MPLS_RND") == 0)
1196 pkt_dev->flags &= ~F_MPLS_RND;
1197
34954ddc
FF		 1198 else if (strcmp(f, "VID_RND") == 0)
1199 pkt_dev->flags |= F_VID_RND;
1200
1201 else if (strcmp(f, "!VID_RND") == 0)
1202 pkt_dev->flags &= ~F_VID_RND;
1203
1204 else if (strcmp(f, "SVID_RND") == 0)
1205 pkt_dev->flags |= F_SVID_RND;
1206
1207 else if (strcmp(f, "!SVID_RND") == 0)
1208 pkt_dev->flags &= ~F_SVID_RND;
1209
007a531b
JHS		 1210 else if (strcmp(f, "FLOW_SEQ") == 0)
1211 pkt_dev->flags |= F_FLOW_SEQ;
1212
45b270f8
RO		 1213 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1214 pkt_dev->flags |= F_QUEUE_MAP_RND;
1215
1216 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1217 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1218
1219 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1220 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1221
1222 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1223 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1224#ifdef CONFIG_XFRM
1225 else if (strcmp(f, "IPSEC") == 0)
1226 pkt_dev->flags |= F_IPSEC_ON;
1227#endif
1228
1ca7768c
FF		 1229 else if (strcmp(f, "!IPV6") == 0)
1230 pkt_dev->flags &= ~F_IPV6;
1231
e99b99b4
RO		 1232 else if (strcmp(f, "NODE_ALLOC") == 0)
1233 pkt_dev->flags |= F_NODE;
1234
1235 else if (strcmp(f, "!NODE_ALLOC") == 0)
1236 pkt_dev->flags &= ~F_NODE;
1237
222f1806
LC		 1238 else {
1239 sprintf(pg_result,
1240 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1241 f,
1ca7768c 1242 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1243 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1244 return count;
1245 }
1da177e4
LT		 1246 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1247 return count;
1248 }
1249 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1250 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1251 if (len < 0)
222f1806 1252 return len;
1da177e4 1253
222f1806 1254 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1255 return -EFAULT;
222f1806
LC		 1256 buf[len] = 0;
1257 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1258 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1259 strncpy(pkt_dev->dst_min, buf, len);
1260 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1261 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1262 }
1263 if (debug)
25a8b254 1264 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1265 pkt_dev->dst_min);
1266 i += len;
1da177e4
LT		 1267 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1268 return count;
1269 }
1270 if (!strcmp(name, "dst_max")) {
1271 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1272 if (len < 0)
222f1806 1273 return len;
63adc6fb 1274
1da177e4 1275
222f1806 1276 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1277 return -EFAULT;
1278
222f1806
LC		 1279 buf[len] = 0;
1280 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1281 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1282 strncpy(pkt_dev->dst_max, buf, len);
1283 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1284 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1285 }
1286 if (debug)
25a8b254 1287 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1288 pkt_dev->dst_max);
1da177e4
LT		 1289 i += len;
1290 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1291 return count;
1292 }
1293 if (!strcmp(name, "dst6")) {
1294 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1295 if (len < 0)
1296 return len;
1da177e4
LT		 1297
1298 pkt_dev->flags |= F_IPV6;
1299
222f1806 1300 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1301 return -EFAULT;
222f1806 1302 buf[len] = 0;
1da177e4
LT		 1303
1304 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
47a0200d 1305 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1306
4e3fd7a0 1307 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1308
222f1806 1309 if (debug)
25a8b254 1310 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1311
222f1806 1312 i += len;
1da177e4
LT		 1313 sprintf(pg_result, "OK: dst6=%s", buf);
1314 return count;
1315 }
1316 if (!strcmp(name, "dst6_min")) {
1317 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1318 if (len < 0)
1319 return len;
1da177e4
LT		 1320
1321 pkt_dev->flags |= F_IPV6;
1322
222f1806 1323 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1324 return -EFAULT;
222f1806 1325 buf[len] = 0;
1da177e4
LT		 1326
1327 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
47a0200d 1328 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1329
4e3fd7a0 1330 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1331 if (debug)
25a8b254 1332 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1333
222f1806 1334 i += len;
1da177e4
LT		 1335 sprintf(pg_result, "OK: dst6_min=%s", buf);
1336 return count;
1337 }
1338 if (!strcmp(name, "dst6_max")) {
1339 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1340 if (len < 0)
1341 return len;
1da177e4
LT		 1342
1343 pkt_dev->flags |= F_IPV6;
1344
222f1806 1345 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1346 return -EFAULT;
222f1806 1347 buf[len] = 0;
1da177e4
LT		 1348
1349 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
47a0200d 1350 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1351
222f1806 1352 if (debug)
25a8b254 1353 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1354
222f1806 1355 i += len;
1da177e4
LT		 1356 sprintf(pg_result, "OK: dst6_max=%s", buf);
1357 return count;
1358 }
1359 if (!strcmp(name, "src6")) {
1360 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1361 if (len < 0)
1362 return len;
1da177e4
LT		 1363
1364 pkt_dev->flags |= F_IPV6;
1365
222f1806 1366 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1367 return -EFAULT;
222f1806 1368 buf[len] = 0;
1da177e4
LT		 1369
1370 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
47a0200d 1371 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1372
4e3fd7a0 1373 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1374
222f1806 1375 if (debug)
25a8b254 1376 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1377
1378 i += len;
1da177e4
LT		 1379 sprintf(pg_result, "OK: src6=%s", buf);
1380 return count;
1381 }
1382 if (!strcmp(name, "src_min")) {
1383 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1384 if (len < 0)
222f1806 1385 return len;
63adc6fb 1386
222f1806 1387 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1388 return -EFAULT;
222f1806
LC		 1389 buf[len] = 0;
1390 if (strcmp(buf, pkt_dev->src_min) != 0) {
1391 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1392 strncpy(pkt_dev->src_min, buf, len);
1393 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1394 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1395 }
1396 if (debug)
25a8b254 1397 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1398 pkt_dev->src_min);
1da177e4
LT		 1399 i += len;
1400 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1401 return count;
1402 }
1403 if (!strcmp(name, "src_max")) {
1404 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1405 if (len < 0)
222f1806 1406 return len;
63adc6fb 1407
222f1806 1408 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1409 return -EFAULT;
222f1806
LC		 1410 buf[len] = 0;
1411 if (strcmp(buf, pkt_dev->src_max) != 0) {
1412 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1413 strncpy(pkt_dev->src_max, buf, len);
1414 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1415 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1416 }
1417 if (debug)
25a8b254 1418 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1419 pkt_dev->src_max);
1da177e4
LT		 1420 i += len;
1421 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1422 return count;
1423 }
1424 if (!strcmp(name, "dst_mac")) {
1da177e4 1425 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1426 if (len < 0)
222f1806 1427 return len;
63adc6fb 1428
1da177e4 1429 memset(valstr, 0, sizeof(valstr));
222f1806 1430 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1431 return -EFAULT;
1da177e4 1432
4940fc88
AD		 1433 if (!mac_pton(valstr, pkt_dev->dst_mac))
1434 return -EINVAL;
1da177e4 1435 /* Set up Dest MAC */
4940fc88 1436 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1437
4940fc88 1438 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1439 return count;
1440 }
1441 if (!strcmp(name, "src_mac")) {
1da177e4 1442 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1443 if (len < 0)
222f1806 1444 return len;
63adc6fb 1445
1da177e4 1446 memset(valstr, 0, sizeof(valstr));
222f1806 1447 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1448 return -EFAULT;
1da177e4 1449
4940fc88
AD		 1450 if (!mac_pton(valstr, pkt_dev->src_mac))
1451 return -EINVAL;
ce5d0b47 1452 /* Set up Src MAC */
4940fc88 1453 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1454
4940fc88 1455 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1456 return count;
1457 }
1458
222f1806
LC		 1459 if (!strcmp(name, "clear_counters")) {
1460 pktgen_clear_counters(pkt_dev);
1461 sprintf(pg_result, "OK: Clearing counters.\n");
1462 return count;
1463 }
1da177e4
LT		 1464
1465 if (!strcmp(name, "flows")) {
1466 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1467 if (len < 0)
222f1806 1468 return len;
63adc6fb 1469
1da177e4
LT		 1470 i += len;
1471 if (value > MAX_CFLOWS)
1472 value = MAX_CFLOWS;
1473
1474 pkt_dev->cflows = value;
1475 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1476 return count;
1477 }
1478
1479 if (!strcmp(name, "flowlen")) {
1480 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1481 if (len < 0)
222f1806 1482 return len;
63adc6fb 1483
1da177e4
LT		 1484 i += len;
1485 pkt_dev->lflow = value;
1486 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1487 return count;
1488 }
222f1806 1489
45b270f8
RO		 1490 if (!strcmp(name, "queue_map_min")) {
1491 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1492 if (len < 0)
45b270f8 1493 return len;
63adc6fb 1494
45b270f8
RO		 1495 i += len;
1496 pkt_dev->queue_map_min = value;
1497 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1498 return count;
1499 }
1500
1501 if (!strcmp(name, "queue_map_max")) {
1502 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1503 if (len < 0)
45b270f8 1504 return len;
63adc6fb 1505
45b270f8
RO		 1506 i += len;
1507 pkt_dev->queue_map_max = value;
1508 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1509 return count;
1510 }
1511
ca6549af 1512 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1513 unsigned n, cnt;
1514
ca6549af 1515 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1516 if (len < 0)
1517 return len;
ca6549af 1518 i += len;
cfcabdcc 1519 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1520 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1521 cnt += sprintf(pg_result + cnt,
1522 "%08x%s", ntohl(pkt_dev->labels[n]),
1523 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1524
1525 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1526 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1527 pkt_dev->svlan_id = 0xffff;
1528
1529 if (debug)
25a8b254 1530 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1531 }
1532 return count;
1533 }
1534
1535 if (!strcmp(name, "vlan_id")) {
1536 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1537 if (len < 0)
34954ddc 1538 return len;
63adc6fb 1539
34954ddc
FF		 1540 i += len;
1541 if (value <= 4095) {
1542 pkt_dev->vlan_id = value; /* turn on VLAN */
1543
1544 if (debug)
25a8b254 1545 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1546
1547 if (debug && pkt_dev->nr_labels)
25a8b254 1548 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1549
1550 pkt_dev->nr_labels = 0; /* turn off MPLS */
1551 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1552 } else {
1553 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1554 pkt_dev->svlan_id = 0xffff;
1555
1556 if (debug)
25a8b254 1557 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1558 }
1559 return count;
1560 }
1561
1562 if (!strcmp(name, "vlan_p")) {
1563 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1564 if (len < 0)
34954ddc 1565 return len;
63adc6fb 1566
34954ddc
FF		 1567 i += len;
1568 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1569 pkt_dev->vlan_p = value;
1570 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1571 } else {
1572 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1573 }
1574 return count;
1575 }
1576
1577 if (!strcmp(name, "vlan_cfi")) {
1578 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1579 if (len < 0)
34954ddc 1580 return len;
63adc6fb 1581
34954ddc
FF		 1582 i += len;
1583 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1584 pkt_dev->vlan_cfi = value;
1585 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1586 } else {
1587 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1588 }
1589 return count;
1590 }
1591
1592 if (!strcmp(name, "svlan_id")) {
1593 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1594 if (len < 0)
34954ddc 1595 return len;
63adc6fb 1596
34954ddc
FF		 1597 i += len;
1598 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1599 pkt_dev->svlan_id = value; /* turn on SVLAN */
1600
1601 if (debug)
25a8b254 1602 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1603
1604 if (debug && pkt_dev->nr_labels)
25a8b254 1605 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1606
1607 pkt_dev->nr_labels = 0; /* turn off MPLS */
1608 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1609 } else {
1610 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1611 pkt_dev->svlan_id = 0xffff;
1612
1613 if (debug)
25a8b254 1614 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1615 }
1616 return count;
1617 }
1618
1619 if (!strcmp(name, "svlan_p")) {
1620 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1621 if (len < 0)
34954ddc 1622 return len;
63adc6fb 1623
34954ddc
FF		 1624 i += len;
1625 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1626 pkt_dev->svlan_p = value;
1627 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1628 } else {
1629 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1630 }
1631 return count;
1632 }
1633
1634 if (!strcmp(name, "svlan_cfi")) {
1635 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1636 if (len < 0)
34954ddc 1637 return len;
63adc6fb 1638
34954ddc
FF		 1639 i += len;
1640 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1641 pkt_dev->svlan_cfi = value;
1642 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1643 } else {
1644 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1645 }
ca6549af
SW		 1646 return count;
1647 }
1648
1ca7768c
FF		 1649 if (!strcmp(name, "tos")) {
1650 __u32 tmp_value = 0;
1651 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1652 if (len < 0)
1ca7768c 1653 return len;
63adc6fb 1654
1ca7768c
FF		 1655 i += len;
1656 if (len == 2) {
1657 pkt_dev->tos = tmp_value;
1658 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1659 } else {
1660 sprintf(pg_result, "ERROR: tos must be 00-ff");
1661 }
1662 return count;
1663 }
1664
1665 if (!strcmp(name, "traffic_class")) {
1666 __u32 tmp_value = 0;
1667 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1668 if (len < 0)
1ca7768c 1669 return len;
63adc6fb 1670
1ca7768c
FF		 1671 i += len;
1672 if (len == 2) {
1673 pkt_dev->traffic_class = tmp_value;
1674 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1675 } else {
1676 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1677 }
1678 return count;
1679 }
1680
9e50e3ac
JF		 1681 if (!strcmp(name, "skb_priority")) {
1682 len = num_arg(&user_buffer[i], 9, &value);
1683 if (len < 0)
1684 return len;
1685
1686 i += len;
1687 pkt_dev->skb_priority = value;
1688 sprintf(pg_result, "OK: skb_priority=%i",
1689 pkt_dev->skb_priority);
1690 return count;
1691 }
1692
1da177e4
LT		 1693 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1694 return -EINVAL;
1695}
1696
d50a6b56 1697static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1698{
d50a6b56
SH		 1699 return single_open(file, pktgen_if_show, PDE(inode)->data);
1700}
1da177e4 1701
9a32144e 1702static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1703 .owner = THIS_MODULE,
1704 .open = pktgen_if_open,
1705 .read = seq_read,
1706 .llseek = seq_lseek,
1707 .write = pktgen_if_write,
1708 .release = single_release,
d50a6b56 1709};
1da177e4 1710
d50a6b56
SH		 1711static int pktgen_thread_show(struct seq_file *seq, void *v)
1712{
222f1806 1713 struct pktgen_thread *t = seq->private;
648fda74 1714 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1715
1716 BUG_ON(!t);
1da177e4 1717
222f1806 1718 seq_printf(seq, "Running: ");
1da177e4 1719
222f1806 1720 if_lock(t);
c26a8016 1721 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1722 if (pkt_dev->running)
593f63b0 1723 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1724
222f1806
LC		 1725 seq_printf(seq, "\nStopped: ");
1726
c26a8016 1727 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1728 if (!pkt_dev->running)
593f63b0 1729 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1730
1731 if (t->result[0])
d50a6b56 1732 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1733 else
d50a6b56 1734 seq_printf(seq, "\nResult: NA\n");
1da177e4 1735
222f1806 1736 if_unlock(t);
1da177e4 1737
d50a6b56 1738 return 0;
1da177e4
LT		 1739}
1740
d50a6b56 1741static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1742 const char __user * user_buffer,
1743 size_t count, loff_t * offset)
1da177e4 1744{
8a994a71 1745 struct seq_file *seq = file->private_data;
222f1806 1746 struct pktgen_thread *t = seq->private;
d6182223 1747 int i, max, len, ret;
1da177e4 1748 char name[40];
222f1806 1749 char *pg_result;
d50a6b56 1750
1da177e4 1751 if (count < 1) {
222f1806 1752 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1753 return -EINVAL;
1754 }
d50a6b56 1755
d6182223
PG		 1756 max = count;
1757 len = count_trail_chars(user_buffer, max);
222f1806 1758 if (len < 0)
d50a6b56
SH		 1759 return len;
1760
d6182223 1761 i = len;
d50a6b56 1762
1da177e4
LT		 1763 /* Read variable name */
1764
1765 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1766 if (len < 0)
d50a6b56 1767 return len;
222f1806 1768
1da177e4
LT		 1769 memset(name, 0, sizeof(name));
1770 if (copy_from_user(name, &user_buffer[i], len))
1771 return -EFAULT;
1772 i += len;
d50a6b56 1773
222f1806 1774 max = count - i;
1da177e4 1775 len = count_trail_chars(&user_buffer[i], max);
222f1806 1776 if (len < 0)
d50a6b56
SH		 1777 return len;
1778
1da177e4
LT		 1779 i += len;
1780
d50a6b56 1781 if (debug)
25a8b254
DM		 1782 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1783 name, (unsigned long)count);
1da177e4 1784
222f1806 1785 if (!t) {
f9467eae 1786 pr_err("ERROR: No thread\n");
1da177e4
LT		 1787 ret = -EINVAL;
1788 goto out;
1789 }
1790
1791 pg_result = &(t->result[0]);
1792
222f1806
LC		 1793 if (!strcmp(name, "add_device")) {
1794 char f[32];
1795 memset(f, 0, 32);
1da177e4 1796 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1797 if (len < 0) {
1798 ret = len;
1da177e4
LT		 1799 goto out;
1800 }
222f1806 1801 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1802 return -EFAULT;
1803 i += len;
6146e6a4 1804 mutex_lock(&pktgen_thread_lock);
222f1806 1805 pktgen_add_device(t, f);
6146e6a4 1806 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1807 ret = count;
1808 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1809 goto out;
1810 }
1811
222f1806 1812 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1813 mutex_lock(&pktgen_thread_lock);
95ed63f7 1814 t->control |= T_REMDEVALL;
6146e6a4 1815 mutex_unlock(&pktgen_thread_lock);
222f1806 1816 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1817 ret = count;
222f1806 1818 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1819 goto out;
1820 }
1821
222f1806 1822 if (!strcmp(name, "max_before_softirq")) {
b163911f 1823 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1824 ret = count;
1da177e4
LT		 1825 goto out;
1826 }
1827
1828 ret = -EINVAL;
222f1806 1829out:
1da177e4
LT		 1830 return ret;
1831}
1832
d50a6b56 1833static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1834{
d50a6b56 1835 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1836}
1837
9a32144e 1838static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1839 .owner = THIS_MODULE,
1840 .open = pktgen_thread_open,
1841 .read = seq_read,
1842 .llseek = seq_lseek,
1843 .write = pktgen_thread_write,
1844 .release = single_release,
d50a6b56 1845};
1da177e4
LT		 1846
1847/* Think find or remove for NN */
222f1806 1848static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1849{
1850 struct pktgen_thread *t;
1851 struct pktgen_dev *pkt_dev = NULL;
3e984840 1852 bool exact = (remove == FIND);
1da177e4 1853
cdcdbe0b 1854 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1855 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1856 if (pkt_dev) {
222f1806
LC		 1857 if (remove) {
1858 if_lock(t);
1859 pkt_dev->removal_mark = 1;
1860 t->control |= T_REMDEV;
1861 if_unlock(t);
1862 }
1da177e4
LT		 1863 break;
1864 }
1da177e4 1865 }
222f1806 1866 return pkt_dev;
1da177e4
LT		 1867}
1868
95ed63f7
AK		 1869/*
1870 * mark a device for removal
1871 */
39df232f 1872static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1873{
1874 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1875 const int max_tries = 10, msec_per_try = 125;
1876 int i = 0;
95ed63f7 1877
6146e6a4 1878 mutex_lock(&pktgen_thread_lock);
f9467eae 1879 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1880
222f1806 1881 while (1) {
95ed63f7
AK		 1882
1883 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1884 if (pkt_dev == NULL)
1885 break; /* success */
95ed63f7 1886
6146e6a4 1887 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1888 pr_debug("%s: waiting for %s to disappear....\n",
1889 __func__, ifname);
95ed63f7 1890 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1891 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1892
1893 if (++i >= max_tries) {
f9467eae
JP		 1894 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1895 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1896 break;
1897 }
1898
1899 }
1900
6146e6a4 1901 mutex_unlock(&pktgen_thread_lock);
39df232f 1902}
95ed63f7 1903
39df232f
SH		 1904static void pktgen_change_name(struct net_device *dev)
1905{
1906 struct pktgen_thread *t;
1907
1908 list_for_each_entry(t, &pktgen_threads, th_list) {
1909 struct pktgen_dev *pkt_dev;
1910
1911 list_for_each_entry(pkt_dev, &t->if_list, list) {
1912 if (pkt_dev->odev != dev)
1913 continue;
1914
1915 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1916
2975315b
AD		 1917 pkt_dev->entry = proc_create_data(dev->name, 0600,
1918 pg_proc_dir,
1919 &pktgen_if_fops,
1920 pkt_dev);
39df232f 1921 if (!pkt_dev->entry)
f9467eae
JP		 1922 pr_err("can't move proc entry for '%s'\n",
1923 dev->name);
39df232f
SH		 1924 break;
1925 }
1926 }
1da177e4
LT		 1927}
1928
222f1806
LC		 1929static int pktgen_device_event(struct notifier_block *unused,
1930 unsigned long event, void *ptr)
1da177e4 1931{
39df232f 1932 struct net_device *dev = ptr;
1da177e4 1933
721499e8 1934 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1935 return NOTIFY_DONE;
1936
1da177e4
LT		 1937 /* It is OK that we do not hold the group lock right now,
1938 * as we run under the RTNL lock.
1939 */
1940
1941 switch (event) {
39df232f
SH		 1942 case NETDEV_CHANGENAME:
1943 pktgen_change_name(dev);
1da177e4 1944 break;
222f1806 1945
1da177e4 1946 case NETDEV_UNREGISTER:
222f1806 1947 pktgen_mark_device(dev->name);
1da177e4 1948 break;
3ff50b79 1949 }
1da177e4
LT		 1950
1951 return NOTIFY_DONE;
1952}
1953
63adc6fb
SH		 1954static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1955 const char *ifname)
e6fce5b9
RO		 1956{
1957 char b[IFNAMSIZ+5];
d6182223 1958 int i;
e6fce5b9 1959
63adc6fb
SH		 1960 for (i = 0; ifname[i] != '@'; i++) {
1961 if (i == IFNAMSIZ)
e6fce5b9
RO		 1962 break;
1963
1964 b[i] = ifname[i];
1965 }
1966 b[i] = 0;
1967
1968 return dev_get_by_name(&init_net, b);
1969}
1970
1971
1da177e4
LT		 1972/* Associate pktgen_dev with a device. */
1973
39df232f 1974static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1975{
1da177e4 1976 struct net_device *odev;
39df232f 1977 int err;
1da177e4
LT		 1978
1979 /* Clean old setups */
1da177e4
LT		 1980 if (pkt_dev->odev) {
1981 dev_put(pkt_dev->odev);
222f1806
LC		 1982 pkt_dev->odev = NULL;
1983 }
1da177e4 1984
e6fce5b9 1985 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1986 if (!odev) {
f9467eae 1987 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1988 return -ENODEV;
1da177e4 1989 }
39df232f 1990
1da177e4 1991 if (odev->type != ARPHRD_ETHER) {
f9467eae 1992 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1993 err = -EINVAL;
1994 } else if (!netif_running(odev)) {
f9467eae 1995 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 1996 err = -ENETDOWN;
1997 } else {
1998 pkt_dev->odev = odev;
1999 return 0;
1da177e4 2000 }
1da177e4 2001
1da177e4 2002 dev_put(odev);
39df232f 2003 return err;
1da177e4
LT		 2004}
2005
2006/* Read pkt_dev from the interface and set up internal pktgen_dev
2007 * structure to have the right information to create/send packets
2008 */
2009static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2010{
64c00d81
AG		 2011 int ntxq;
2012
222f1806 2013 if (!pkt_dev->odev) {
f9467eae 2014 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2015 sprintf(pkt_dev->result,
2016 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2017 return;
2018 }
2019
64c00d81
AG		 2020 /* make sure that we don't pick a non-existing transmit queue */
2021 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2022
64c00d81 2023 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2024 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2025 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2026 pkt_dev->odevname);
64c00d81
AG		 2027 pkt_dev->queue_map_min = ntxq - 1;
2028 }
88271660 2029 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2030 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2031 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2032 pkt_dev->odevname);
64c00d81
AG		 2033 pkt_dev->queue_map_max = ntxq - 1;
2034 }
2035
222f1806 2036 /* Default to the interface's mac if not explicitly set. */
1da177e4 2037
f404e9a6 2038 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2039 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2040
222f1806 2041 /* Set up Dest MAC */
f404e9a6 2042 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2043
222f1806
LC		 2044 /* Set up pkt size */
2045 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2046
2047 if (pkt_dev->flags & F_IPV6) {
1da177e4 2048 /*
4ec93edb 2049 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2050 * gets exported
2051 */
2052
2053#ifdef NOTNOW
222f1806 2054 int i, set = 0, err = 1;
1da177e4
LT		 2055 struct inet6_dev *idev;
2056
222f1806
LC		 2057 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2058 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2059 set = 1;
2060 break;
2061 }
2062
222f1806
LC		 2063 if (!set) {
2064
1da177e4
LT		 2065 /*
2066 * Use linklevel address if unconfigured.
2067 *
2068 * use ipv6_get_lladdr if/when it's get exported
2069 */
2070
8814c4b5 2071 rcu_read_lock();
63adc6fb
SH		 2072 idev = __in6_dev_get(pkt_dev->odev);
2073 if (idev) {
1da177e4
LT		 2074 struct inet6_ifaddr *ifp;
2075
2076 read_lock_bh(&idev->lock);
222f1806
LC		 2077 for (ifp = idev->addr_list; ifp;
2078 ifp = ifp->if_next) {
f64f9e71
JP		 2079 if (ifp->scope == IFA_LINK &&
2080 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2081 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2082 err = 0;
2083 break;
2084 }
2085 }
2086 read_unlock_bh(&idev->lock);
2087 }
8814c4b5 2088 rcu_read_unlock();
222f1806 2089 if (err)
f9467eae 2090 pr_err("ERROR: IPv6 link address not available\n");
1da177e4
LT		 2091 }
2092#endif
222f1806 2093 } else {
1da177e4
LT		 2094 pkt_dev->saddr_min = 0;
2095 pkt_dev->saddr_max = 0;
2096 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2097
2098 struct in_device *in_dev;
1da177e4
LT		 2099
2100 rcu_read_lock();
e5ed6399 2101 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2102 if (in_dev) {
2103 if (in_dev->ifa_list) {
222f1806
LC		 2104 pkt_dev->saddr_min =
2105 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2106 pkt_dev->saddr_max = pkt_dev->saddr_min;
2107 }
1da177e4
LT		 2108 }
2109 rcu_read_unlock();
222f1806 2110 } else {
1da177e4
LT		 2111 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2112 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2113 }
2114
2115 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2116 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2117 }
222f1806
LC		 2118 /* Initialize current values. */
2119 pkt_dev->cur_dst_mac_offset = 0;
2120 pkt_dev->cur_src_mac_offset = 0;
2121 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2122 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2123 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2124 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2125 pkt_dev->nflows = 0;
2126}
2127
fd29cf72
SH		 2128
2129static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2130{
ef87979c 2131 ktime_t start_time, end_time;
417bc4b8 2132 s64 remaining;
2bc481cf
SH		 2133 struct hrtimer_sleeper t;
2134
2135 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2136 hrtimer_set_expires(&t.timer, spin_until);
2137
43d28b65 2138 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2139 if (remaining <= 0) {
2140 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2141 return;
417bc4b8 2142 }
2bc481cf 2143
ef87979c 2144 start_time = ktime_now();
33136d12
ED		 2145 if (remaining < 100000) {
2146 /* for small delays (<100us), just loop until limit is reached */
2147 do {
2148 end_time = ktime_now();
2149 } while (ktime_lt(end_time, spin_until));
2150 } else {
2bc481cf
SH		 2151 /* see do_nanosleep */
2152 hrtimer_init_sleeper(&t, current);
2153 do {
2154 set_current_state(TASK_INTERRUPTIBLE);
2155 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2156 if (!hrtimer_active(&t.timer))
2157 t.task = NULL;
2158
2159 if (likely(t.task))
1da177e4 2160 schedule();
1da177e4 2161
2bc481cf
SH		 2162 hrtimer_cancel(&t.timer);
2163 } while (t.task && pkt_dev->running && !signal_pending(current));
2164 __set_current_state(TASK_RUNNING);
33136d12 2165 end_time = ktime_now();
1da177e4 2166 }
ef87979c
SH		 2167
2168 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2169 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2170}
2171
16dab72f
JHS		 2172static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2173{
a553e4a6 2174 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2175 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2176 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2177 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2178}
2179
648fda74 2180static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2181{
648fda74 2182 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2183}
2184
2185static inline int f_pick(struct pktgen_dev *pkt_dev)
2186{
2187 int flow = pkt_dev->curfl;
2188
2189 if (pkt_dev->flags & F_FLOW_SEQ) {
2190 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2191 /* reset time */
2192 pkt_dev->flows[flow].count = 0;
1211a645 2193 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2194 pkt_dev->curfl += 1;
2195 if (pkt_dev->curfl >= pkt_dev->cflows)
2196 pkt_dev->curfl = 0; /*reset */
2197 }
2198 } else {
2199 flow = random32() % pkt_dev->cflows;
1211a645 2200 pkt_dev->curfl = flow;
007a531b 2201
1211a645 2202 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2203 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2204 pkt_dev->flows[flow].flags = 0;
2205 }
007a531b
JHS		 2206 }
2207
2208 return pkt_dev->curfl;
2209}
2210
a553e4a6
JHS		 2211
2212#ifdef CONFIG_XFRM
2213/* If there was already an IPSEC SA, we keep it as is, else
2214 * we go look for it ...
2215*/
bd55775c 2216#define DUMMY_MARK 0
fea1ab0f 2217static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2218{
2219 struct xfrm_state *x = pkt_dev->flows[flow].x;
2220 if (!x) {
2221 /*slow path: we dont already have xfrm_state*/
bd55775c 2222 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2223 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2224 (xfrm_address_t *)&pkt_dev->cur_saddr,
2225 AF_INET,
2226 pkt_dev->ipsmode,
2227 pkt_dev->ipsproto, 0);
2228 if (x) {
2229 pkt_dev->flows[flow].x = x;
2230 set_pkt_overhead(pkt_dev);
63adc6fb 2231 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2232 }
2233
2234 }
2235}
2236#endif
fd2ea0a7
DM		 2237static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2238{
e6fce5b9
RO		 2239
2240 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2241 pkt_dev->cur_queue_map = smp_processor_id();
2242
896a7cf8 2243 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2244 __u16 t;
2245 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2246 t = random32() %
2247 (pkt_dev->queue_map_max -
2248 pkt_dev->queue_map_min + 1)
2249 + pkt_dev->queue_map_min;
2250 } else {
2251 t = pkt_dev->cur_queue_map + 1;
2252 if (t > pkt_dev->queue_map_max)
2253 t = pkt_dev->queue_map_min;
2254 }
2255 pkt_dev->cur_queue_map = t;
2256 }
bfdbc0ac 2257 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2258}
2259
1da177e4
LT		 2260/* Increment/randomize headers according to flags and current values
2261 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2262 */
222f1806
LC		 2263static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2264{
2265 __u32 imn;
2266 __u32 imx;
2267 int flow = 0;
1da177e4 2268
007a531b
JHS		 2269 if (pkt_dev->cflows)
2270 flow = f_pick(pkt_dev);
1da177e4
LT		 2271
2272 /* Deal with source MAC */
222f1806
LC		 2273 if (pkt_dev->src_mac_count > 1) {
2274 __u32 mc;
2275 __u32 tmp;
2276
2277 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2278 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2279 else {
2280 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2281 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2282 pkt_dev->src_mac_count)
2283 pkt_dev->cur_src_mac_offset = 0;
2284 }
2285
2286 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2287 pkt_dev->hh[11] = tmp;
2288 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2289 pkt_dev->hh[10] = tmp;
2290 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2291 pkt_dev->hh[9] = tmp;
2292 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2293 pkt_dev->hh[8] = tmp;
2294 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2295 pkt_dev->hh[7] = tmp;
2296 }
2297
2298 /* Deal with Destination MAC */
2299 if (pkt_dev->dst_mac_count > 1) {
2300 __u32 mc;
2301 __u32 tmp;
2302
2303 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2304 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2305
2306 else {
2307 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2308 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2309 pkt_dev->dst_mac_count) {
2310 pkt_dev->cur_dst_mac_offset = 0;
2311 }
2312 }
2313
2314 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2315 pkt_dev->hh[5] = tmp;
2316 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2317 pkt_dev->hh[4] = tmp;
2318 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2319 pkt_dev->hh[3] = tmp;
2320 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2321 pkt_dev->hh[2] = tmp;
2322 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2323 pkt_dev->hh[1] = tmp;
2324 }
2325
ca6549af
SW		 2326 if (pkt_dev->flags & F_MPLS_RND) {
2327 unsigned i;
e71a4783 2328 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2329 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2330 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2331 ((__force __be32)random32() &
ca6549af
SW		 2332 htonl(0x000fffff));
2333 }
2334
34954ddc 2335 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2336 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2337 }
2338
2339 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2340 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2341 }
2342
222f1806
LC		 2343 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2344 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2345 pkt_dev->cur_udp_src = random32() %
2346 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2347 + pkt_dev->udp_src_min;
222f1806
LC		 2348
2349 else {
1da177e4
LT		 2350 pkt_dev->cur_udp_src++;
2351 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2352 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2353 }
2354 }
2355
2356 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2357 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2358 pkt_dev->cur_udp_dst = random32() %
2359 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2360 + pkt_dev->udp_dst_min;
222f1806 2361 } else {
1da177e4 2362 pkt_dev->cur_udp_dst++;
222f1806 2363 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2364 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2365 }
2366 }
1da177e4
LT		 2367
2368 if (!(pkt_dev->flags & F_IPV6)) {
2369
63adc6fb
SH		 2370 imn = ntohl(pkt_dev->saddr_min);
2371 imx = ntohl(pkt_dev->saddr_max);
2372 if (imn < imx) {
1da177e4 2373 __u32 t;
222f1806 2374 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2375 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2376 else {
2377 t = ntohl(pkt_dev->cur_saddr);
2378 t++;
63adc6fb 2379 if (t > imx)
1da177e4 2380 t = imn;
63adc6fb 2381
1da177e4
LT		 2382 }
2383 pkt_dev->cur_saddr = htonl(t);
2384 }
222f1806 2385
007a531b 2386 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2387 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2388 } else {
252e3346
AV		 2389 imn = ntohl(pkt_dev->daddr_min);
2390 imx = ntohl(pkt_dev->daddr_max);
2391 if (imn < imx) {
1da177e4 2392 __u32 t;
252e3346 2393 __be32 s;
1da177e4
LT		 2394 if (pkt_dev->flags & F_IPDST_RND) {
2395
5fa6fc76 2396 t = random32() % (imx - imn) + imn;
252e3346 2397 s = htonl(t);
1da177e4 2398
21cf2253
JP		 2399 while (ipv4_is_loopback(s) ||
2400 ipv4_is_multicast(s) ||
1e637c74 2401 ipv4_is_lbcast(s) ||
21cf2253
JP		 2402 ipv4_is_zeronet(s) ||
2403 ipv4_is_local_multicast(s)) {
5fa6fc76 2404 t = random32() % (imx - imn) + imn;
252e3346 2405 s = htonl(t);
1da177e4 2406 }
252e3346
AV		 2407 pkt_dev->cur_daddr = s;
2408 } else {
1da177e4
LT		 2409 t = ntohl(pkt_dev->cur_daddr);
2410 t++;
2411 if (t > imx) {
2412 t = imn;
2413 }
2414 pkt_dev->cur_daddr = htonl(t);
2415 }
2416 }
222f1806 2417 if (pkt_dev->cflows) {
007a531b 2418 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2419 pkt_dev->flows[flow].cur_daddr =
2420 pkt_dev->cur_daddr;
a553e4a6
JHS		 2421#ifdef CONFIG_XFRM
2422 if (pkt_dev->flags & F_IPSEC_ON)
2423 get_ipsec_sa(pkt_dev, flow);
2424#endif
1da177e4
LT		 2425 pkt_dev->nflows++;
2426 }
2427 }
222f1806
LC		 2428 } else { /* IPV6 * */
2429
2430 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2431 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2432 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2433 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2434 else {
2435 int i;
2436
2437 /* Only random destinations yet */
2438
222f1806 2439 for (i = 0; i < 4; i++) {
1da177e4 2440 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2441 (((__force __be32)random32() |
222f1806
LC		 2442 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2443 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2444 }
222f1806 2445 }
1da177e4
LT		 2446 }
2447
222f1806
LC		 2448 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2449 __u32 t;
2450 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2451 t = random32() %
2452 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2453 + pkt_dev->min_pkt_size;
222f1806 2454 } else {
1da177e4 2455 t = pkt_dev->cur_pkt_size + 1;
222f1806 2456 if (t > pkt_dev->max_pkt_size)
1da177e4 2457 t = pkt_dev->min_pkt_size;
222f1806
LC		 2458 }
2459 pkt_dev->cur_pkt_size = t;
2460 }
1da177e4 2461
fd2ea0a7 2462 set_cur_queue_map(pkt_dev);
45b270f8 2463
1da177e4
LT		 2464 pkt_dev->flows[flow].count++;
2465}
2466
a553e4a6
JHS		 2467
2468#ifdef CONFIG_XFRM
2469static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2470{
2471 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2472 int err = 0;
a553e4a6
JHS		 2473
2474 if (!x)
2475 return 0;
2476 /* XXX: we dont support tunnel mode for now until
2477 * we resolve the dst issue */
2478 if (x->props.mode != XFRM_MODE_TRANSPORT)
2479 return 0;
2480
2481 spin_lock(&x->lock);
a553e4a6 2482
13996378 2483 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2484 if (err)
2485 goto error;
2486 err = x->type->output(x, skb);
2487 if (err)
2488 goto error;
2489
63adc6fb 2490 x->curlft.bytes += skb->len;
a553e4a6 2491 x->curlft.packets++;
a553e4a6
JHS		 2492error:
2493 spin_unlock(&x->lock);
2494 return err;
2495}
2496
475ac1e4 2497static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2498{
2499 if (pkt_dev->cflows) {
2500 /* let go of the SAs if we have them */
d6182223
PG		 2501 int i;
2502 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2503 struct xfrm_state *x = pkt_dev->flows[i].x;
2504 if (x) {
2505 xfrm_state_put(x);
2506 pkt_dev->flows[i].x = NULL;
2507 }
2508 }
2509 }
2510}
2511
475ac1e4 2512static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2513 struct sk_buff *skb, __be16 protocol)
2514{
2515 if (pkt_dev->flags & F_IPSEC_ON) {
2516 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2517 int nhead = 0;
2518 if (x) {
2519 int ret;
2520 __u8 *eth;
2521 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2522 if (nhead > 0) {
a553e4a6
JHS		 2523 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2524 if (ret < 0) {
f9467eae
JP		 2525 pr_err("Error expanding ipsec packet %d\n",
2526 ret);
b4bb4ac8 2527 goto err;
a553e4a6
JHS		 2528 }
2529 }
2530
2531 /* ipsec is not expecting ll header */
2532 skb_pull(skb, ETH_HLEN);
2533 ret = pktgen_output_ipsec(skb, pkt_dev);
2534 if (ret) {
f9467eae 2535 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2536 goto err;
a553e4a6
JHS		 2537 }
2538 /* restore ll */
2539 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2540 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2541 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2542 }
2543 }
2544 return 1;
b4bb4ac8
IJ		 2545err:
2546 kfree_skb(skb);
2547 return 0;
a553e4a6
JHS		 2548}
2549#endif
2550
ca6549af
SW		 2551static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2552{
2553 unsigned i;
63adc6fb 2554 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2555 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2556
ca6549af
SW		 2557 mpls--;
2558 *mpls |= MPLS_STACK_BOTTOM;
2559}
2560
0f37c605
AV		 2561static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2562 unsigned int prio)
2563{
2564 return htons(id | (cfi << 12) | (prio << 13));
2565}
2566
26ad7879
ED		 2567static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2568 int datalen)
2569{
2570 struct timeval timestamp;
2571 struct pktgen_hdr *pgh;
2572
2573 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2574 datalen -= sizeof(*pgh);
2575
2576 if (pkt_dev->nfrags <= 0) {
05aebe2e 2577 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2578 } else {
2579 int frags = pkt_dev->nfrags;
2580 int i, len;
7d36a991 2581 int frag_len;
26ad7879
ED		 2582
2583
2584 if (frags > MAX_SKB_FRAGS)
2585 frags = MAX_SKB_FRAGS;
2586 len = datalen - frags * PAGE_SIZE;
2587 if (len > 0) {
2588 memset(skb_put(skb, len), 0, len);
2589 datalen = frags * PAGE_SIZE;
2590 }
2591
2592 i = 0;
7d36a991 2593 frag_len = (datalen/frags) < PAGE_SIZE ?
2594 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2595 while (datalen > 0) {
2596 if (unlikely(!pkt_dev->page)) {
2597 int node = numa_node_id();
2598
2599 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2600 node = pkt_dev->node;
2601 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2602 if (!pkt_dev->page)
2603 break;
2604 }
a0bec1cd 2605 get_page(pkt_dev->page);
ea2ab693 2606 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2607 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2608 /*last fragment, fill rest of data*/
2609 if (i == (frags - 1))
9e903e08
ED		 2610 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2611 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2612 else
9e903e08
ED		 2613 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2614 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2615 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2616 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2617 i++;
2618 skb_shinfo(skb)->nr_frags = i;
2619 }
26ad7879
ED		 2620 }
2621
2622 /* Stamp the time, and sequence number,
2623 * convert them to network byte order
2624 */
2625 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2626 pgh->seq_num = htonl(pkt_dev->seq_num);
2627
2628 do_gettimeofday(&timestamp);
2629 pgh->tv_sec = htonl(timestamp.tv_sec);
2630 pgh->tv_usec = htonl(timestamp.tv_usec);
2631}
2632
222f1806
LC		 2633static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2634 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2635{
2636 struct sk_buff *skb = NULL;
2637 __u8 *eth;
2638 struct udphdr *udph;
2639 int datalen, iplen;
2640 struct iphdr *iph;
d5f1ce9a 2641 __be16 protocol = htons(ETH_P_IP);
ca6549af 2642 __be32 *mpls;
34954ddc
FF		 2643 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2644 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2645 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2646 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2647 u16 queue_map;
ca6549af
SW		 2648
2649 if (pkt_dev->nr_labels)
d5f1ce9a 2650 protocol = htons(ETH_P_MPLS_UC);
222f1806 2651
34954ddc 2652 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2653 protocol = htons(ETH_P_8021Q);
34954ddc 2654
64053bee
RO		 2655 /* Update any of the values, used when we're incrementing various
2656 * fields.
2657 */
2658 mod_cur_headers(pkt_dev);
eb589063 2659 queue_map = pkt_dev->cur_queue_map;
64053bee 2660
7ac5459e 2661 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2662
2663 if (pkt_dev->flags & F_NODE) {
2664 int node;
2665
2666 if (pkt_dev->node >= 0)
2667 node = pkt_dev->node;
2668 else
2669 node = numa_node_id();
2670
2671 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2672 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2673 if (likely(skb)) {
2674 skb_reserve(skb, NET_SKB_PAD);
2675 skb->dev = odev;
2676 }
2677 }
2678 else
2679 skb = __netdev_alloc_skb(odev,
2680 pkt_dev->cur_pkt_size + 64
2681 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2682
1da177e4
LT		 2683 if (!skb) {
2684 sprintf(pkt_dev->result, "No memory");
2685 return NULL;
2686 }
a8d764b9 2687 prefetchw(skb->data);
1da177e4 2688
7ac5459e 2689 skb_reserve(skb, datalen);
1da177e4
LT		 2690
2691 /* Reserve for ethernet and IP header */
2692 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2693 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2694 if (pkt_dev->nr_labels)
2695 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2696
2697 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2698 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2699 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2700 *svlan_tci = build_tci(pkt_dev->svlan_id,
2701 pkt_dev->svlan_cfi,
2702 pkt_dev->svlan_p);
34954ddc 2703 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2704 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2705 }
2706 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2707 *vlan_tci = build_tci(pkt_dev->vlan_id,
2708 pkt_dev->vlan_cfi,
2709 pkt_dev->vlan_p);
34954ddc 2710 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2711 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2712 }
2713
27a884dc 2714 skb->network_header = skb->tail;
b0e380b1 2715 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2716 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2717 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2718 skb->priority = pkt_dev->skb_priority;
2719
ddc7b8e3
ACM		 2720 iph = ip_hdr(skb);
2721 udph = udp_hdr(skb);
1da177e4 2722
1da177e4 2723 memcpy(eth, pkt_dev->hh, 12);
252e3346 2724 *(__be16 *) & eth[12] = protocol;
1da177e4 2725
ca6549af
SW		 2726 /* Eth + IPh + UDPh + mpls */
2727 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2728 pkt_dev->pkt_overhead;
222f1806 2729 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2730 datalen = sizeof(struct pktgen_hdr);
222f1806 2731
1da177e4
LT		 2732 udph->source = htons(pkt_dev->cur_udp_src);
2733 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2734 udph->len = htons(datalen + 8); /* DATA + udphdr */
2735 udph->check = 0; /* No checksum */
1da177e4
LT		 2736
2737 iph->ihl = 5;
2738 iph->version = 4;
2739 iph->ttl = 32;
1ca7768c 2740 iph->tos = pkt_dev->tos;
222f1806 2741 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2742 iph->saddr = pkt_dev->cur_saddr;
2743 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2744 iph->id = htons(pkt_dev->ip_id);
2745 pkt_dev->ip_id++;
1da177e4
LT		 2746 iph->frag_off = 0;
2747 iplen = 20 + 8 + datalen;
2748 iph->tot_len = htons(iplen);
2749 iph->check = 0;
222f1806 2750 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2751 skb->protocol = protocol;
b0e380b1 2752 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2753 pkt_dev->pkt_overhead);
1da177e4
LT		 2754 skb->dev = odev;
2755 skb->pkt_type = PACKET_HOST;
26ad7879 2756 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2757
a553e4a6
JHS		 2758#ifdef CONFIG_XFRM
2759 if (!process_ipsec(pkt_dev, skb, protocol))
2760 return NULL;
2761#endif
2762
1da177e4
LT		 2763 return skb;
2764}
2765
2766/*
4ec93edb 2767 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2768 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2769 *
4ec93edb 2770 * Slightly modified for kernel.
1da177e4
LT		 2771 * Should be candidate for net/ipv4/utils.c
2772 * --ro
2773 */
2774
222f1806 2775static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2776{
2777 unsigned int i;
222f1806 2778 unsigned int len = 0;
1da177e4
LT		 2779 unsigned long u;
2780 char suffix[16];
222f1806
LC		 2781 unsigned int prefixlen = 0;
2782 unsigned int suffixlen = 0;
252e3346 2783 __be32 tmp;
cfcabdcc 2784 char *pos;
1da177e4 2785
222f1806
LC		 2786 for (i = 0; i < 16; i++)
2787 ip[i] = 0;
1da177e4
LT		 2788
2789 for (;;) {
2790 if (*s == ':') {
2791 len++;
222f1806
LC		 2792 if (s[1] == ':') { /* Found "::", skip to part 2 */
2793 s += 2;
1da177e4
LT		 2794 len++;
2795 break;
2796 }
2797 s++;
2798 }
1da177e4 2799
cfcabdcc
SH		 2800 u = simple_strtoul(s, &pos, 16);
2801 i = pos - s;
222f1806
LC		 2802 if (!i)
2803 return 0;
2804 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2805
2806 /* the last 4 bytes may be written as IPv4 address */
2807
2808 tmp = in_aton(s);
222f1806
LC		 2809 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2810 return i + len;
1da177e4
LT		 2811 }
2812 ip[prefixlen++] = (u >> 8);
2813 ip[prefixlen++] = (u & 255);
222f1806
LC		 2814 s += i;
2815 len += i;
2816 if (prefixlen == 16)
1da177e4
LT		 2817 return len;
2818 }
2819
2820/* part 2, after "::" */
2821 for (;;) {
2822 if (*s == ':') {
222f1806 2823 if (suffixlen == 0)
1da177e4
LT		 2824 break;
2825 s++;
2826 len++;
222f1806 2827 } else if (suffixlen != 0)
1da177e4 2828 break;
cfcabdcc
SH		 2829
2830 u = simple_strtol(s, &pos, 16);
2831 i = pos - s;
1da177e4 2832 if (!i) {
222f1806
LC		 2833 if (*s)
2834 len--;
1da177e4
LT		 2835 break;
2836 }
222f1806 2837 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2838 tmp = in_aton(s);
222f1806
LC		 2839 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2840 sizeof(tmp));
2841 suffixlen += 4;
2842 len += strlen(s);
1da177e4
LT		 2843 break;
2844 }
2845 suffix[suffixlen++] = (u >> 8);
2846 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2847 s += i;
2848 len += i;
2849 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2850 break;
2851 }
222f1806
LC		 2852 for (i = 0; i < suffixlen; i++)
2853 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2854 return len;
2855}
2856
222f1806
LC		 2857static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2858 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2859{
2860 struct sk_buff *skb = NULL;
2861 __u8 *eth;
2862 struct udphdr *udph;
2863 int datalen;
2864 struct ipv6hdr *iph;
d5f1ce9a 2865 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2866 __be32 *mpls;
34954ddc
FF		 2867 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2868 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2869 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2870 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2871 u16 queue_map;
ca6549af
SW		 2872
2873 if (pkt_dev->nr_labels)
d5f1ce9a 2874 protocol = htons(ETH_P_MPLS_UC);
64053bee 2875
34954ddc 2876 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2877 protocol = htons(ETH_P_8021Q);
34954ddc 2878
64053bee
RO		 2879 /* Update any of the values, used when we're incrementing various
2880 * fields.
2881 */
2882 mod_cur_headers(pkt_dev);
eb589063 2883 queue_map = pkt_dev->cur_queue_map;
64053bee 2884
e470757d
SH		 2885 skb = __netdev_alloc_skb(odev,
2886 pkt_dev->cur_pkt_size + 64
2887 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2888 if (!skb) {
2889 sprintf(pkt_dev->result, "No memory");
2890 return NULL;
2891 }
a8d764b9 2892 prefetchw(skb->data);
1da177e4
LT		 2893
2894 skb_reserve(skb, 16);
2895
2896 /* Reserve for ethernet and IP header */
2897 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2898 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2899 if (pkt_dev->nr_labels)
2900 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2901
2902 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2903 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2904 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2905 *svlan_tci = build_tci(pkt_dev->svlan_id,
2906 pkt_dev->svlan_cfi,
2907 pkt_dev->svlan_p);
34954ddc 2908 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2909 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2910 }
2911 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2912 *vlan_tci = build_tci(pkt_dev->vlan_id,
2913 pkt_dev->vlan_cfi,
2914 pkt_dev->vlan_p);
34954ddc 2915 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2916 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2917 }
2918
27a884dc 2919 skb->network_header = skb->tail;
b0e380b1 2920 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2921 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2922 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2923 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 2924 iph = ipv6_hdr(skb);
2925 udph = udp_hdr(skb);
1da177e4 2926
1da177e4 2927 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2928 *(__be16 *) &eth[12] = protocol;
64053bee 2929
ca6549af
SW		 2930 /* Eth + IPh + UDPh + mpls */
2931 datalen = pkt_dev->cur_pkt_size - 14 -
2932 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2933 pkt_dev->pkt_overhead;
1da177e4 2934
222f1806 2935 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 2936 datalen = sizeof(struct pktgen_hdr);
2937 if (net_ratelimit())
f9467eae 2938 pr_info("increased datalen to %d\n", datalen);
1da177e4
LT		 2939 }
2940
2941 udph->source = htons(pkt_dev->cur_udp_src);
2942 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2943 udph->len = htons(datalen + sizeof(struct udphdr));
2944 udph->check = 0; /* No checksum */
1da177e4 2945
d5f1ce9a 2946 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2947
1ca7768c
FF		 2948 if (pkt_dev->traffic_class) {
2949 /* Version + traffic class + flow (0) */
252e3346 2950 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2951 }
2952
1da177e4
LT		 2953 iph->hop_limit = 32;
2954
2955 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2956 iph->nexthdr = IPPROTO_UDP;
2957
4e3fd7a0
AD		 2958 iph->daddr = pkt_dev->cur_in6_daddr;
2959 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2960
b0e380b1 2961 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2962 pkt_dev->pkt_overhead);
ca6549af 2963 skb->protocol = protocol;
1da177e4
LT		 2964 skb->dev = odev;
2965 skb->pkt_type = PACKET_HOST;
2966
26ad7879 2967 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2968
1da177e4
LT		 2969 return skb;
2970}
2971
475ac1e4
SH		 2972static struct sk_buff *fill_packet(struct net_device *odev,
2973 struct pktgen_dev *pkt_dev)
1da177e4 2974{
222f1806 2975 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2976 return fill_packet_ipv6(odev, pkt_dev);
2977 else
2978 return fill_packet_ipv4(odev, pkt_dev);
2979}
2980
222f1806 2981static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2982{
222f1806
LC		 2983 pkt_dev->seq_num = 1;
2984 pkt_dev->idle_acc = 0;
1da177e4 2985 pkt_dev->sofar = 0;
222f1806
LC		 2986 pkt_dev->tx_bytes = 0;
2987 pkt_dev->errors = 0;
1da177e4
LT		 2988}
2989
2990/* Set up structure for sending pkts, clear counters */
2991
2992static void pktgen_run(struct pktgen_thread *t)
2993{
c26a8016 2994 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2995 int started = 0;
2996
f9467eae 2997 func_enter();
1da177e4
LT		 2998
2999 if_lock(t);
c26a8016 3000 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3001
3002 /*
3003 * setup odev and create initial packet.
3004 */
3005 pktgen_setup_inject(pkt_dev);
3006
222f1806 3007 if (pkt_dev->odev) {
1da177e4 3008 pktgen_clear_counters(pkt_dev);
222f1806 3009 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3010 pkt_dev->skb = NULL;
fd29cf72
SH		 3011 pkt_dev->started_at =
3012 pkt_dev->next_tx = ktime_now();
3013
16dab72f 3014 set_pkt_overhead(pkt_dev);
222f1806 3015
1da177e4
LT		 3016 strcpy(pkt_dev->result, "Starting");
3017 started++;
222f1806 3018 } else
1da177e4
LT		 3019 strcpy(pkt_dev->result, "Error starting");
3020 }
3021 if_unlock(t);
222f1806
LC		 3022 if (started)
3023 t->control &= ~(T_STOP);
1da177e4
LT		 3024}
3025
3026static void pktgen_stop_all_threads_ifs(void)
3027{
cdcdbe0b 3028 struct pktgen_thread *t;
1da177e4 3029
f9467eae 3030 func_enter();
1da177e4 3031
6146e6a4 3032 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3033
3034 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3035 t->control |= T_STOP;
cdcdbe0b 3036
6146e6a4 3037 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3038}
3039
648fda74 3040static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3041{
648fda74 3042 const struct pktgen_dev *pkt_dev;
1da177e4 3043
c26a8016 3044 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3045 if (pkt_dev->running)
3046 return 1;
3047 return 0;
1da177e4
LT		 3048}
3049
222f1806 3050static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3051{
222f1806 3052 if_lock(t);
1da177e4 3053
222f1806 3054 while (thread_is_running(t)) {
1da177e4 3055
222f1806 3056 if_unlock(t);
1da177e4 3057
222f1806 3058 msleep_interruptible(100);
1da177e4 3059
222f1806
LC		 3060 if (signal_pending(current))
3061 goto signal;
3062 if_lock(t);
3063 }
3064 if_unlock(t);
3065 return 1;
3066signal:
3067 return 0;
1da177e4
LT		 3068}
3069
3070static int pktgen_wait_all_threads_run(void)
3071{
cdcdbe0b 3072 struct pktgen_thread *t;
1da177e4 3073 int sig = 1;
222f1806 3074
6146e6a4 3075 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3076
3077 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3078 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3079 if (sig == 0)
3080 break;
1da177e4 3081 }
cdcdbe0b
LC		 3082
3083 if (sig == 0)
3084 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3085 t->control |= (T_STOP);
cdcdbe0b 3086
6146e6a4 3087 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3088 return sig;
3089}
3090
3091static void pktgen_run_all_threads(void)
3092{
cdcdbe0b 3093 struct pktgen_thread *t;
1da177e4 3094
f9467eae 3095 func_enter();
1da177e4 3096
6146e6a4 3097 mutex_lock(&pktgen_thread_lock);
1da177e4 3098
cdcdbe0b 3099 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3100 t->control |= (T_RUN);
cdcdbe0b 3101
6146e6a4 3102 mutex_unlock(&pktgen_thread_lock);
1da177e4 3103
63adc6fb
SH		 3104 /* Propagate thread->control */
3105 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3106
1da177e4
LT		 3107 pktgen_wait_all_threads_run();
3108}
3109
eb37b41c
JB		 3110static void pktgen_reset_all_threads(void)
3111{
3112 struct pktgen_thread *t;
3113
f9467eae 3114 func_enter();
eb37b41c
JB		 3115
3116 mutex_lock(&pktgen_thread_lock);
3117
3118 list_for_each_entry(t, &pktgen_threads, th_list)
3119 t->control |= (T_REMDEVALL);
3120
3121 mutex_unlock(&pktgen_thread_lock);
3122
63adc6fb
SH		 3123 /* Propagate thread->control */
3124 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3125
3126 pktgen_wait_all_threads_run();
3127}
3128
1da177e4
LT		 3129static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3130{
fd29cf72 3131 __u64 bps, mbps, pps;
222f1806 3132 char *p = pkt_dev->result;
fd29cf72
SH		 3133 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3134 pkt_dev->started_at);
3135 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3136
03a14ab1 3137 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3138 (unsigned long long)ktime_to_us(elapsed),
3139 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3140 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3141 (unsigned long long)pkt_dev->sofar,
3142 pkt_dev->cur_pkt_size, nr_frags);
3143
fd29cf72
SH		 3144 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3145 ktime_to_ns(elapsed));
222f1806
LC		 3146
3147 bps = pps * 8 * pkt_dev->cur_pkt_size;
3148
3149 mbps = bps;
3150 do_div(mbps, 1000000);
3151 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3152 (unsigned long long)pps,
3153 (unsigned long long)mbps,
3154 (unsigned long long)bps,
3155 (unsigned long long)pkt_dev->errors);
1da177e4 3156}
1da177e4
LT		 3157
3158/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3159static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3160{
222f1806 3161 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3162
222f1806 3163 if (!pkt_dev->running) {
f9467eae
JP		 3164 pr_warning("interface: %s is already stopped\n",
3165 pkt_dev->odevname);
222f1806
LC		 3166 return -EINVAL;
3167 }
1da177e4 3168
3bda06a3
SH		 3169 kfree_skb(pkt_dev->skb);
3170 pkt_dev->skb = NULL;
fd29cf72 3171 pkt_dev->stopped_at = ktime_now();
222f1806 3172 pkt_dev->running = 0;
1da177e4 3173
95ed63f7 3174 show_results(pkt_dev, nr_frags);
1da177e4 3175
222f1806 3176 return 0;
1da177e4
LT		 3177}
3178
222f1806 3179static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3180{
c26a8016 3181 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3182
1da177e4
LT		 3183 if_lock(t);
3184
c26a8016
LC		 3185 list_for_each_entry(pkt_dev, &t->if_list, list) {
3186 if (!pkt_dev->running)
222f1806
LC		 3187 continue;
3188 if (best == NULL)
c26a8016 3189 best = pkt_dev;
fd29cf72 3190 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3191 best = pkt_dev;
1da177e4
LT		 3192 }
3193 if_unlock(t);
222f1806 3194 return best;
1da177e4
LT		 3195}
3196
222f1806
LC		 3197static void pktgen_stop(struct pktgen_thread *t)
3198{
c26a8016 3199 struct pktgen_dev *pkt_dev;
1da177e4 3200
f9467eae 3201 func_enter();
1da177e4 3202
222f1806 3203 if_lock(t);
1da177e4 3204
c26a8016
LC		 3205 list_for_each_entry(pkt_dev, &t->if_list, list) {
3206 pktgen_stop_device(pkt_dev);
95ed63f7 3207 }
1da177e4 3208
222f1806 3209 if_unlock(t);
1da177e4
LT		 3210}
3211
95ed63f7
AK		 3212/*
3213 * one of our devices needs to be removed - find it
3214 * and remove it
3215 */
3216static void pktgen_rem_one_if(struct pktgen_thread *t)
3217{
c26a8016
LC		 3218 struct list_head *q, *n;
3219 struct pktgen_dev *cur;
95ed63f7 3220
f9467eae 3221 func_enter();
95ed63f7
AK		 3222
3223 if_lock(t);
3224
c26a8016
LC		 3225 list_for_each_safe(q, n, &t->if_list) {
3226 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3227
222f1806
LC		 3228 if (!cur->removal_mark)
3229 continue;
95ed63f7 3230
86dc1ad2 3231 kfree_skb(cur->skb);
95ed63f7
AK		 3232 cur->skb = NULL;
3233
3234 pktgen_remove_device(t, cur);
3235
3236 break;
3237 }
3238
3239 if_unlock(t);
3240}
3241
222f1806 3242static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3243{
c26a8016
LC		 3244 struct list_head *q, *n;
3245 struct pktgen_dev *cur;
222f1806 3246
f9467eae
JP		 3247 func_enter();
3248
222f1806 3249 /* Remove all devices, free mem */
95ed63f7 3250
222f1806 3251 if_lock(t);
1da177e4 3252
c26a8016
LC		 3253 list_for_each_safe(q, n, &t->if_list) {
3254 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3255
86dc1ad2 3256 kfree_skb(cur->skb);
95ed63f7
AK		 3257 cur->skb = NULL;
3258
1da177e4
LT		 3259 pktgen_remove_device(t, cur);
3260 }
3261
222f1806 3262 if_unlock(t);
1da177e4
LT		 3263}
3264
222f1806 3265static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3266{
222f1806 3267 /* Remove from the thread list */
1da177e4 3268
ee74baa7 3269 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3270
1da177e4
LT		 3271}
3272
ef87979c 3273static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3274{
fd29cf72 3275 ktime_t idle_start = ktime_now();
ef87979c
SH		 3276 schedule();
3277 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3278}
3791decb 3279
ef87979c
SH		 3280static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3281{
3282 ktime_t idle_start = ktime_now();
3791decb 3283
ef87979c
SH		 3284 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3285 if (signal_pending(current))
3286 break;
3287
3288 if (need_resched())
3289 pktgen_resched(pkt_dev);
3290 else
3291 cpu_relax();
3292 }
fd29cf72 3293 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3294}
3295
475ac1e4 3296static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3297{
00829823 3298 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3299 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3300 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3301 struct netdev_queue *txq;
fd2ea0a7 3302 u16 queue_map;
1da177e4
LT		 3303 int ret;
3304
ef87979c
SH		 3305 /* If device is offline, then don't send */
3306 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3307 pktgen_stop_device(pkt_dev);
3308 return;
fd2ea0a7
DM		 3309 }
3310
ef87979c
SH		 3311 /* This is max DELAY, this has special meaning of
3312 * "never transmit"
3313 */
3314 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3315 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3316 return;
1da177e4 3317 }
222f1806 3318
ef87979c 3319 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3320 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3321 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3322 /* build a new pkt */
3323 kfree_skb(pkt_dev->skb);
3324
3325 pkt_dev->skb = fill_packet(odev, pkt_dev);
3326 if (pkt_dev->skb == NULL) {
f9467eae 3327 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3328 schedule();
3329 pkt_dev->clone_count--; /* back out increment, OOM */
3330 return;
1da177e4 3331 }
baac8564 3332 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3333 pkt_dev->allocated_skbs++;
3334 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3335 }
95ed63f7 3336
ef87979c
SH		 3337 if (pkt_dev->delay && pkt_dev->last_ok)
3338 spin(pkt_dev, pkt_dev->next_tx);
3339
fd2ea0a7
DM		 3340 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3341 txq = netdev_get_tx_queue(odev, queue_map);
3342
3343 __netif_tx_lock_bh(txq);
5b8db2f5 3344
5a0d2268 3345 if (unlikely(netif_tx_queue_frozen_or_stopped(txq))) {
ef87979c 3346 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3347 pkt_dev->last_ok = 0;
3348 goto unlock;
3349 }
3350 atomic_inc(&(pkt_dev->skb->users));
3351 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3352
3353 switch (ret) {
3354 case NETDEV_TX_OK:
3355 txq_trans_update(txq);
3356 pkt_dev->last_ok = 1;
3357 pkt_dev->sofar++;
3358 pkt_dev->seq_num++;
baac8564 3359 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3360 break;
f466dba1
JF		 3361 case NET_XMIT_DROP:
3362 case NET_XMIT_CN:
3363 case NET_XMIT_POLICED:
3364 /* skb has been consumed */
3365 pkt_dev->errors++;
3366 break;
ef87979c
SH		 3367 default: /* Drivers are not supposed to return other values! */
3368 if (net_ratelimit())
58231186 3369 pr_info("%s xmit error: %d\n", pkt_dev->odevname, ret);
ef87979c
SH		 3370 pkt_dev->errors++;
3371 /* fallthru */
3372 case NETDEV_TX_LOCKED:
3373 case NETDEV_TX_BUSY:
3374 /* Retry it next time */
3375 atomic_dec(&(pkt_dev->skb->users));
3376 pkt_dev->last_ok = 0;
222f1806 3377 }
0835acfe 3378unlock:
fd2ea0a7 3379 __netif_tx_unlock_bh(txq);
222f1806 3380
1da177e4
LT		 3381 /* If pkt_dev->count is zero, then run forever */
3382 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3383 pktgen_wait_for_skb(pkt_dev);
222f1806 3384
1da177e4
LT		 3385 /* Done with this */
3386 pktgen_stop_device(pkt_dev);
222f1806 3387 }
222f1806 3388}
1da177e4 3389
4ec93edb 3390/*
1da177e4
LT		 3391 * Main loop of the thread goes here
3392 */
3393
ee74baa7 3394static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3395{
3396 DEFINE_WAIT(wait);
ee74baa7 3397 struct pktgen_thread *t = arg;
222f1806 3398 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3399 int cpu = t->cpu;
1da177e4 3400
ee74baa7 3401 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3402
3403 init_waitqueue_head(&t->queue);
d3ede327 3404 complete(&t->start_done);
1da177e4 3405
f9467eae 3406 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3407
ee74baa7 3408 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3409
83144186
RW		 3410 set_freezable();
3411
ee74baa7
DM		 3412 while (!kthread_should_stop()) {
3413 pkt_dev = next_to_run(t);
1da177e4 3414
ef87979c 3415 if (unlikely(!pkt_dev && t->control == 0)) {
551eaff1
ED		 3416 if (pktgen_exiting)
3417 break;
ef87979c
SH		 3418 wait_event_interruptible_timeout(t->queue,
3419 t->control != 0,
3420 HZ/10);
1b3f720b 3421 try_to_freeze();
ef87979c 3422 continue;
ee74baa7 3423 }
1da177e4 3424
ee74baa7 3425 __set_current_state(TASK_RUNNING);
222f1806 3426
ef87979c 3427 if (likely(pkt_dev)) {
1da177e4
LT		 3428 pktgen_xmit(pkt_dev);
3429
ef87979c
SH		 3430 if (need_resched())
3431 pktgen_resched(pkt_dev);
3432 else
3433 cpu_relax();
3434 }
3435
222f1806 3436 if (t->control & T_STOP) {
1da177e4
LT		 3437 pktgen_stop(t);
3438 t->control &= ~(T_STOP);
3439 }
3440
222f1806 3441 if (t->control & T_RUN) {
1da177e4
LT		 3442 pktgen_run(t);
3443 t->control &= ~(T_RUN);
3444 }
3445
222f1806 3446 if (t->control & T_REMDEVALL) {
1da177e4 3447 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3448 t->control &= ~(T_REMDEVALL);
3449 }
3450
222f1806 3451 if (t->control & T_REMDEV) {
95ed63f7 3452 pktgen_rem_one_if(t);
1da177e4
LT		 3453 t->control &= ~(T_REMDEV);
3454 }
3455
09fe3ef4
AM		 3456 try_to_freeze();
3457
ee74baa7 3458 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3459 }
1da177e4 3460
f9467eae 3461 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3462 pktgen_stop(t);
1da177e4 3463
f9467eae 3464 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3465 pktgen_rem_all_ifs(t);
1da177e4 3466
f9467eae 3467 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3468 pktgen_rem_thread(t);
cdcdbe0b 3469
551eaff1
ED		 3470 /* Wait for kthread_stop */
3471 while (!kthread_should_stop()) {
3472 set_current_state(TASK_INTERRUPTIBLE);
3473 schedule();
3474 }
3475 __set_current_state(TASK_RUNNING);
3476
ee74baa7 3477 return 0;
1da177e4
LT		 3478}
3479
222f1806 3480static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3481 const char *ifname, bool exact)
1da177e4 3482{
c26a8016 3483 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3484 size_t len = strlen(ifname);
222f1806 3485
3e984840 3486 if_lock(t);
c26a8016 3487 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3488 if (strncmp(p->odevname, ifname, len) == 0) {
3489 if (p->odevname[len]) {
3490 if (exact || p->odevname[len] != '@')
3491 continue;
3492 }
c26a8016 3493 pkt_dev = p;
222f1806
LC		 3494 break;
3495 }
222f1806
LC		 3496
3497 if_unlock(t);
f9467eae 3498 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3499 return pkt_dev;
1da177e4
LT		 3500}
3501
4ec93edb
YH		 3502/*
3503 * Adds a dev at front of if_list.
1da177e4
LT		 3504 */
3505
222f1806
LC		 3506static int add_dev_to_thread(struct pktgen_thread *t,
3507 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3508{
3509 int rv = 0;
222f1806
LC		 3510
3511 if_lock(t);
3512
3513 if (pkt_dev->pg_thread) {
f9467eae 3514 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3515 rv = -EBUSY;
3516 goto out;
3517 }
c26a8016
LC		 3518
3519 list_add(&pkt_dev->list, &t->if_list);
222f1806 3520 pkt_dev->pg_thread = t;
1da177e4
LT		 3521 pkt_dev->running = 0;
3522
222f1806
LC		 3523out:
3524 if_unlock(t);
3525 return rv;
1da177e4
LT		 3526}
3527
3528/* Called under thread lock */
3529
222f1806 3530static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3531{
222f1806 3532 struct pktgen_dev *pkt_dev;
39df232f 3533 int err;
3291b9db 3534 int node = cpu_to_node(t->cpu);
222f1806 3535
1da177e4
LT		 3536 /* We don't allow a device to be on several threads */
3537
d50a6b56
SH		 3538 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3539 if (pkt_dev) {
f9467eae 3540 pr_err("ERROR: interface already used\n");
222f1806
LC		 3541 return -EBUSY;
3542 }
d50a6b56 3543
3291b9db 3544 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3545 if (!pkt_dev)
3546 return -ENOMEM;
3547
593f63b0 3548 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3549 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3550 node);
d50a6b56
SH		 3551 if (pkt_dev->flows == NULL) {
3552 kfree(pkt_dev);
3553 return -ENOMEM;
3554 }
d50a6b56 3555
95ed63f7 3556 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3557 pkt_dev->min_pkt_size = ETH_ZLEN;
3558 pkt_dev->max_pkt_size = ETH_ZLEN;
3559 pkt_dev->nfrags = 0;
fd29cf72 3560 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3561 pkt_dev->count = pg_count_d;
3562 pkt_dev->sofar = 0;
222f1806 3563 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3564 pkt_dev->udp_src_max = 9;
3565 pkt_dev->udp_dst_min = 9;
3566 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3567 pkt_dev->vlan_p = 0;
3568 pkt_dev->vlan_cfi = 0;
3569 pkt_dev->vlan_id = 0xffff;
3570 pkt_dev->svlan_p = 0;
3571 pkt_dev->svlan_cfi = 0;
3572 pkt_dev->svlan_id = 0xffff;
e99b99b4 3573 pkt_dev->node = -1;
34954ddc 3574
39df232f
SH		 3575 err = pktgen_setup_dev(pkt_dev, ifname);
3576 if (err)
3577 goto out1;
d8873315
NH		 3578 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3579 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3580
5efdccbc
DL		 3581 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3582 &pktgen_if_fops, pkt_dev);
39df232f 3583 if (!pkt_dev->entry) {
f9467eae 3584 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3585 PG_PROC_DIR, ifname);
39df232f
SH		 3586 err = -EINVAL;
3587 goto out2;
d50a6b56 3588 }
a553e4a6
JHS		 3589#ifdef CONFIG_XFRM
3590 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3591 pkt_dev->ipsproto = IPPROTO_ESP;
3592#endif
d50a6b56
SH		 3593
3594 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3595out2:
3596 dev_put(pkt_dev->odev);
3597out1:
a553e4a6
JHS		 3598#ifdef CONFIG_XFRM
3599 free_SAs(pkt_dev);
3600#endif
1d0ebfe7 3601 vfree(pkt_dev->flows);
39df232f
SH		 3602 kfree(pkt_dev);
3603 return err;
1da177e4
LT		 3604}
3605
ee74baa7 3606static int __init pktgen_create_thread(int cpu)
1da177e4 3607{
cdcdbe0b 3608 struct pktgen_thread *t;
d50a6b56 3609 struct proc_dir_entry *pe;
ee74baa7 3610 struct task_struct *p;
222f1806 3611
3291b9db
ED		 3612 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3613 cpu_to_node(cpu));
222f1806 3614 if (!t) {
f9467eae 3615 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3616 return -ENOMEM;
3617 }
3618
222f1806 3619 spin_lock_init(&t->if_lock);
1da177e4 3620 t->cpu = cpu;
222f1806 3621
ee74baa7
DM		 3622 INIT_LIST_HEAD(&t->if_list);
3623
3624 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3625 init_completion(&t->start_done);
ee74baa7 3626
94dcf29a
ED		 3627 p = kthread_create_on_node(pktgen_thread_worker,
3628 t,
3629 cpu_to_node(cpu),
3630 "kpktgend_%d", cpu);
ee74baa7 3631 if (IS_ERR(p)) {
f9467eae 3632 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3633 list_del(&t->th_list);
3634 kfree(t);
3635 return PTR_ERR(p);
3636 }
3637 kthread_bind(p, cpu);
3638 t->tsk = p;
3639
5efdccbc
DL		 3640 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3641 &pktgen_thread_fops, t);
222f1806 3642 if (!pe) {
f9467eae 3643 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3644 PG_PROC_DIR, t->tsk->comm);
3645 kthread_stop(p);
3646 list_del(&t->th_list);
222f1806
LC		 3647 kfree(t);
3648 return -EINVAL;
3649 }
d50a6b56 3650
ee74baa7 3651 wake_up_process(p);
d3ede327 3652 wait_for_completion(&t->start_done);
1da177e4
LT		 3653
3654 return 0;
3655}
3656
4ec93edb
YH		 3657/*
3658 * Removes a device from the thread if_list.
1da177e4 3659 */
222f1806
LC		 3660static void _rem_dev_from_if_list(struct pktgen_thread *t,
3661 struct pktgen_dev *pkt_dev)
1da177e4 3662{
c26a8016
LC		 3663 struct list_head *q, *n;
3664 struct pktgen_dev *p;
1da177e4 3665
c26a8016
LC		 3666 list_for_each_safe(q, n, &t->if_list) {
3667 p = list_entry(q, struct pktgen_dev, list);
3668 if (p == pkt_dev)
3669 list_del(&p->list);
1da177e4
LT		 3670 }
3671}
3672
222f1806
LC		 3673static int pktgen_remove_device(struct pktgen_thread *t,
3674 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3675{
3676
f9467eae 3677 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3678
222f1806 3679 if (pkt_dev->running) {
f9467eae 3680 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3681 pktgen_stop_device(pkt_dev);
3682 }
3683
3684 /* Dis-associate from the interface */
1da177e4
LT		 3685
3686 if (pkt_dev->odev) {
3687 dev_put(pkt_dev->odev);
222f1806
LC		 3688 pkt_dev->odev = NULL;
3689 }
3690
1da177e4
LT		 3691 /* And update the thread if_list */
3692
3693 _rem_dev_from_if_list(t, pkt_dev);
3694
39df232f
SH		 3695 if (pkt_dev->entry)
3696 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3697
a553e4a6
JHS		 3698#ifdef CONFIG_XFRM
3699 free_SAs(pkt_dev);
3700#endif
1d0ebfe7 3701 vfree(pkt_dev->flows);
26ad7879
ED		 3702 if (pkt_dev->page)
3703 put_page(pkt_dev->page);
1da177e4 3704 kfree(pkt_dev);
222f1806 3705 return 0;
1da177e4
LT		 3706}
3707
222f1806 3708static int __init pg_init(void)
1da177e4
LT		 3709{
3710 int cpu;
d50a6b56 3711 struct proc_dir_entry *pe;
ce14f894 3712 int ret = 0;
1da177e4 3713
f9467eae 3714 pr_info("%s", version);
1da177e4 3715
457c4cbc 3716 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3717 if (!pg_proc_dir)
3718 return -ENODEV;
1da177e4 3719
25296d59 3720 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3721 if (pe == NULL) {
f9467eae 3722 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
ce14f894
WC		 3723 ret = -EINVAL;
3724 goto remove_dir;
222f1806 3725 }
1da177e4 3726
1da177e4 3727 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3728
670c02c2 3729 for_each_online_cpu(cpu) {
8024bb24 3730 int err;
1da177e4 3731
ee74baa7 3732 err = pktgen_create_thread(cpu);
8024bb24 3733 if (err)
f9467eae
JP		 3734 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3735 cpu, err);
222f1806 3736 }
8024bb24
LC		 3737
3738 if (list_empty(&pktgen_threads)) {
f9467eae 3739 pr_err("ERROR: Initialization failed for all threads\n");
ce14f894
WC		 3740 ret = -ENODEV;
3741 goto unregister;
8024bb24
LC		 3742 }
3743
222f1806 3744 return 0;
ce14f894
WC		 3745
3746 unregister:
3747 unregister_netdevice_notifier(&pktgen_notifier_block);
3748 remove_proc_entry(PGCTRL, pg_proc_dir);
3749 remove_dir:
3750 proc_net_remove(&init_net, PG_PROC_DIR);
3751 return ret;
1da177e4
LT		 3752}
3753
3754static void __exit pg_cleanup(void)
3755{
cdcdbe0b
LC		 3756 struct pktgen_thread *t;
3757 struct list_head *q, *n;
1da177e4 3758
222f1806 3759 /* Stop all interfaces & threads */
551eaff1 3760 pktgen_exiting = true;
1da177e4 3761
cdcdbe0b
LC		 3762 list_for_each_safe(q, n, &pktgen_threads) {
3763 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3764 kthread_stop(t->tsk);
3765 kfree(t);
222f1806 3766 }
1da177e4 3767
222f1806 3768 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3769 unregister_netdevice_notifier(&pktgen_notifier_block);
3770
222f1806 3771 /* Clean up proc file system */
d50a6b56 3772 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3773 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3774}
3775
1da177e4
LT		 3776module_init(pg_init);
3777module_exit(pg_cleanup);
3778
c3d2f52d 3779MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3780MODULE_DESCRIPTION("Packet Generator tool");
3781MODULE_LICENSE("GPL");
c3d2f52d 3782MODULE_VERSION(VERSION);
1da177e4 3783module_param(pg_count_d, int, 0);
c3d2f52d 3784MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3785module_param(pg_delay_d, int, 0);
c3d2f52d 3786MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3787module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3788MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3789module_param(debug, int, 0);
c3d2f52d 3790MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
kernel source for telekom puls (alcatel/mediatek)