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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>
457c4cbc 159#include <net/net_namespace.h>
1da177e4
LT		 160#include <net/checksum.h>
161#include <net/ipv6.h>
162#include <net/addrconf.h>
a553e4a6
JHS		 163#ifdef CONFIG_XFRM
164#include <net/xfrm.h>
165#endif
1da177e4
LT		 166#include <asm/byteorder.h>
167#include <linux/rcupdate.h>
1977f032 168#include <linux/bitops.h>
63adc6fb
SH		 169#include <linux/io.h>
170#include <linux/timex.h>
171#include <linux/uaccess.h>
1da177e4 172#include <asm/dma.h>
222f1806 173#include <asm/div64.h> /* do_div */
1da177e4 174
43d28b65 175#define VERSION "2.74"
1da177e4 176#define IP_NAME_SZ 32
ca6549af 177#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 178#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 179
f9467eae
JP		 180#define func_enter() pr_debug("entering %s\n", __func__);
181
1da177e4 182/* Device flag bits */
222f1806
LC		 183#define F_IPSRC_RND (1<<0) /* IP-Src Random */
184#define F_IPDST_RND (1<<1) /* IP-Dst Random */
185#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
186#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
187#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
188#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
189#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
190#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 191#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 192#define F_VID_RND (1<<9) /* Random VLAN ID */
193#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 194#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 195#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 196#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 197#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 198#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 199
200/* Thread control flag bits */
6b80d6a6
SH		 201#define T_STOP (1<<0) /* Stop run */
202#define T_RUN (1<<1) /* Start run */
203#define T_REMDEVALL (1<<2) /* Remove all devs */
204#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 205
1da177e4
LT		 206/* If lock -- can be removed after some work */
207#define if_lock(t) spin_lock(&(t->if_lock));
208#define if_unlock(t) spin_unlock(&(t->if_lock));
209
210/* Used to help with determining the pkts on receive */
211#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 212#define PG_PROC_DIR "pktgen"
213#define PGCTRL "pgctrl"
63adc6fb 214static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 215
216#define MAX_CFLOWS 65536
217
34954ddc
FF		 218#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
219#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
220
222f1806 221struct flow_state {
252e3346 222 __be32 cur_daddr;
222f1806 223 int count;
a553e4a6
JHS		 224#ifdef CONFIG_XFRM
225 struct xfrm_state *x;
226#endif
007a531b 227 __u32 flags;
1da177e4
LT		 228};
229
007a531b
JHS		 230/* flow flag bits */
231#define F_INIT (1<<0) /* flow has been initialized */
232
1da177e4 233struct pktgen_dev {
1da177e4
LT		 234 /*
235 * Try to keep frequent/infrequent used vars. separated.
236 */
39df232f
SH		 237 struct proc_dir_entry *entry; /* proc file */
238 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 239 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 240
63adc6fb 241 int running; /* if false, the test will stop */
1da177e4 242
222f1806
LC		 243 /* If min != max, then we will either do a linear iteration, or
244 * we will do a random selection from within the range.
245 */
246 __u32 flags;
95ed63f7
AK		 247 int removal_mark; /* non-zero => the device is marked for
248 * removal by worker thread */
1da177e4 249
222f1806
LC		 250 int min_pkt_size; /* = ETH_ZLEN; */
251 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 252 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 253 int nfrags;
fd29cf72
SH		 254 u64 delay; /* nano-seconds */
255
222f1806
LC		 256 __u64 count; /* Default No packets to send */
257 __u64 sofar; /* How many pkts we've sent so far */
258 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 259 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 260
261 /* runtime counters relating to clone_skb */
222f1806
LC		 262
263 __u64 allocated_skbs;
264 __u32 clone_count;
265 int last_ok; /* Was last skb sent?
63adc6fb
SH		 266 * Or a failed transmit of some sort?
267 * This will keep sequence numbers in order
222f1806 268 */
fd29cf72
SH		 269 ktime_t next_tx;
270 ktime_t started_at;
271 ktime_t stopped_at;
272 u64 idle_acc; /* nano-seconds */
273
222f1806
LC		 274 __u32 seq_num;
275
63adc6fb
SH		 276 int clone_skb; /*
277 * Use multiple SKBs during packet gen.
278 * If this number is greater than 1, then
279 * that many copies of the same packet will be
280 * sent before a new packet is allocated.
281 * If you want to send 1024 identical packets
282 * before creating a new packet,
283 * set clone_skb to 1024.
222f1806
LC		 284 */
285
286 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
287 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
288 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290
291 struct in6_addr in6_saddr;
292 struct in6_addr in6_daddr;
293 struct in6_addr cur_in6_daddr;
294 struct in6_addr cur_in6_saddr;
1da177e4 295 /* For ranges */
222f1806
LC		 296 struct in6_addr min_in6_daddr;
297 struct in6_addr max_in6_daddr;
298 struct in6_addr min_in6_saddr;
299 struct in6_addr max_in6_saddr;
300
301 /* If we're doing ranges, random or incremental, then this
302 * defines the min/max for those ranges.
303 */
252e3346
AV		 304 __be32 saddr_min; /* inclusive, source IP address */
305 __be32 saddr_max; /* exclusive, source IP address */
306 __be32 daddr_min; /* inclusive, dest IP address */
307 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 308
309 __u16 udp_src_min; /* inclusive, source UDP port */
310 __u16 udp_src_max; /* exclusive, source UDP port */
311 __u16 udp_dst_min; /* inclusive, dest UDP port */
312 __u16 udp_dst_max; /* exclusive, dest UDP port */
313
1ca7768c 314 /* DSCP + ECN */
63adc6fb
SH		 315 __u8 tos; /* six MSB of (former) IPv4 TOS
316 are for dscp codepoint */
317 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
318 (see RFC 3260, sec. 4) */
1ca7768c 319
ca6549af
SW		 320 /* MPLS */
321 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
322 __be32 labels[MAX_MPLS_LABELS];
323
34954ddc
FF		 324 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
325 __u8 vlan_p;
326 __u8 vlan_cfi;
327 __u16 vlan_id; /* 0xffff means no vlan tag */
328
329 __u8 svlan_p;
330 __u8 svlan_cfi;
331 __u16 svlan_id; /* 0xffff means no svlan tag */
332
222f1806
LC		 333 __u32 src_mac_count; /* How many MACs to iterate through */
334 __u32 dst_mac_count; /* How many MACs to iterate through */
335
336 unsigned char dst_mac[ETH_ALEN];
337 unsigned char src_mac[ETH_ALEN];
338
339 __u32 cur_dst_mac_offset;
340 __u32 cur_src_mac_offset;
252e3346
AV		 341 __be32 cur_saddr;
342 __be32 cur_daddr;
66ed1e5e 343 __u16 ip_id;
222f1806
LC		 344 __u16 cur_udp_dst;
345 __u16 cur_udp_src;
45b270f8 346 __u16 cur_queue_map;
222f1806 347 __u32 cur_pkt_size;
baac8564 348 __u32 last_pkt_size;
222f1806
LC		 349
350 __u8 hh[14];
351 /* = {
352 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
353
354 We fill in SRC address later
355 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
356 0x08, 0x00
357 };
358 */
359 __u16 pad; /* pad out the hh struct to an even 16 bytes */
360
63adc6fb 361 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 362 * are transmitting the same one multiple times
363 */
63adc6fb
SH		 364 struct net_device *odev; /* The out-going device.
365 * Note that the device should have it's
366 * pg_info pointer pointing back to this
367 * device.
368 * Set when the user specifies the out-going
369 * device name (not when the inject is
370 * started as it used to do.)
371 */
593f63b0 372 char odevname[32];
1da177e4 373 struct flow_state *flows;
222f1806
LC		 374 unsigned cflows; /* Concurrent flows (config) */
375 unsigned lflow; /* Flow length (config) */
376 unsigned nflows; /* accumulated flows (stats) */
007a531b 377 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 378
379 u16 queue_map_min;
380 u16 queue_map_max;
e99b99b4 381 int node; /* Memory node */
45b270f8 382
a553e4a6
JHS		 383#ifdef CONFIG_XFRM
384 __u8 ipsmode; /* IPSEC mode (config) */
385 __u8 ipsproto; /* IPSEC type (config) */
386#endif
39df232f 387 char result[512];
1da177e4
LT		 388};
389
390struct pktgen_hdr {
252e3346
AV		 391 __be32 pgh_magic;
392 __be32 seq_num;
393 __be32 tv_sec;
394 __be32 tv_usec;
1da177e4
LT		 395};
396
397struct pktgen_thread {
63adc6fb 398 spinlock_t if_lock; /* for list of devices */
c26a8016 399 struct list_head if_list; /* All device here */
cdcdbe0b 400 struct list_head th_list;
ee74baa7 401 struct task_struct *tsk;
222f1806 402 char result[512];
222f1806 403
63adc6fb
SH		 404 /* Field for thread to receive "posted" events terminate,
405 stop ifs etc. */
222f1806
LC		 406
407 u32 control;
1da177e4
LT		 408 int cpu;
409
222f1806 410 wait_queue_head_t queue;
d3ede327 411 struct completion start_done;
1da177e4
LT		 412};
413
414#define REMOVE 1
415#define FIND 0
416
fd29cf72 417static inline ktime_t ktime_now(void)
1da177e4 418{
fd29cf72
SH		 419 struct timespec ts;
420 ktime_get_ts(&ts);
421
422 return timespec_to_ktime(ts);
1da177e4
LT		 423}
424
fd29cf72
SH		 425/* This works even if 32 bit because of careful byte order choice */
426static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 427{
fd29cf72 428 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 429}
430
c3d2f52d 431static const char version[] =
f9467eae
JP		 432 "Packet Generator for packet performance testing. "
433 "Version: " VERSION "\n";
1da177e4 434
222f1806
LC		 435static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
436static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
437static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 438 const char *ifname, bool exact);
1da177e4
LT		 439static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
440static void pktgen_run_all_threads(void);
eb37b41c 441static void pktgen_reset_all_threads(void);
1da177e4 442static void pktgen_stop_all_threads_ifs(void);
3bda06a3 443
222f1806 444static void pktgen_stop(struct pktgen_thread *t);
1da177e4 445static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 446
222f1806
LC		 447static unsigned int scan_ip6(const char *s, char ip[16]);
448static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 449
450/* Module parameters, defaults. */
65c5b786
SH		 451static int pg_count_d __read_mostly = 1000;
452static int pg_delay_d __read_mostly;
453static int pg_clone_skb_d __read_mostly;
454static int debug __read_mostly;
1da177e4 455
222fa076 456static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 457static LIST_HEAD(pktgen_threads);
1da177e4 458
1da177e4
LT		 459static struct notifier_block pktgen_notifier_block = {
460 .notifier_call = pktgen_device_event,
461};
462
1da177e4 463/*
4ec93edb 464 * /proc handling functions
1da177e4
LT		 465 *
466 */
467
d50a6b56 468static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 469{
c3d2f52d 470 seq_puts(seq, version);
d50a6b56 471 return 0;
1da177e4
LT		 472}
473
63adc6fb
SH		 474static ssize_t pgctrl_write(struct file *file, const char __user *buf,
475 size_t count, loff_t *ppos)
1da177e4 476{
1da177e4 477 int err = 0;
d50a6b56 478 char data[128];
1da177e4 479
222f1806
LC		 480 if (!capable(CAP_NET_ADMIN)) {
481 err = -EPERM;
1da177e4 482 goto out;
222f1806 483 }
1da177e4 484
d50a6b56
SH		 485 if (count > sizeof(data))
486 count = sizeof(data);
1da177e4 487
1da177e4 488 if (copy_from_user(data, buf, count)) {
b4099fab 489 err = -EFAULT;
d50a6b56 490 goto out;
222f1806
LC		 491 }
492 data[count - 1] = 0; /* Make string */
1da177e4 493
222f1806 494 if (!strcmp(data, "stop"))
1da177e4
LT		 495 pktgen_stop_all_threads_ifs();
496
222f1806 497 else if (!strcmp(data, "start"))
1da177e4
LT		 498 pktgen_run_all_threads();
499
eb37b41c
JB		 500 else if (!strcmp(data, "reset"))
501 pktgen_reset_all_threads();
502
222f1806 503 else
f9467eae 504 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 505
506 err = count;
507
222f1806
LC		 508out:
509 return err;
1da177e4
LT		 510}
511
d50a6b56
SH		 512static int pgctrl_open(struct inode *inode, struct file *file)
513{
514 return single_open(file, pgctrl_show, PDE(inode)->data);
515}
516
9a32144e 517static const struct file_operations pktgen_fops = {
222f1806
LC		 518 .owner = THIS_MODULE,
519 .open = pgctrl_open,
520 .read = seq_read,
521 .llseek = seq_lseek,
522 .write = pgctrl_write,
523 .release = single_release,
d50a6b56
SH		 524};
525
526static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 527{
648fda74 528 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 529 ktime_t stopped;
530 u64 idle;
222f1806
LC		 531
532 seq_printf(seq,
533 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
534 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
535 pkt_dev->max_pkt_size);
536
537 seq_printf(seq,
fd29cf72
SH		 538 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
539 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 540 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 541
542 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
543 pkt_dev->lflow);
544
45b270f8
RO		 545 seq_printf(seq,
546 " queue_map_min: %u queue_map_max: %u\n",
547 pkt_dev->queue_map_min,
548 pkt_dev->queue_map_max);
549
222f1806
LC		 550 if (pkt_dev->flags & F_IPV6) {
551 char b1[128], b2[128], b3[128];
552 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
553 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
554 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
555 seq_printf(seq,
556 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
557 b2, b3);
558
559 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
560 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
561 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
562 seq_printf(seq,
563 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
564 b2, b3);
565
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) {
1da177e4 701 char b1[128], b2[128];
222f1806
LC		 702 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
703 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
704 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
705 } else
706 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 707 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 708
222f1806 709 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 710 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 711
45b270f8
RO		 712 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
713
222f1806 714 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 715
716 if (pkt_dev->result[0])
222f1806 717 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 718 else
222f1806 719 seq_printf(seq, "Result: Idle\n");
1da177e4 720
d50a6b56 721 return 0;
1da177e4
LT		 722}
723
ca6549af 724
63adc6fb
SH		 725static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
726 __u32 *num)
ca6549af
SW		 727{
728 int i = 0;
729 *num = 0;
730
e71a4783 731 for (; i < maxlen; i++) {
82fd5b5d 732 int value;
ca6549af
SW		 733 char c;
734 *num <<= 4;
735 if (get_user(c, &user_buffer[i]))
736 return -EFAULT;
82fd5b5d
AS		 737 value = hex_to_bin(c);
738 if (value >= 0)
739 *num |= value;
ca6549af
SW		 740 else
741 break;
742 }
743 return i;
744}
745
222f1806
LC		 746static int count_trail_chars(const char __user * user_buffer,
747 unsigned int maxlen)
1da177e4
LT		 748{
749 int i;
750
751 for (i = 0; i < maxlen; i++) {
222f1806
LC		 752 char c;
753 if (get_user(c, &user_buffer[i]))
754 return -EFAULT;
755 switch (c) {
1da177e4
LT		 756 case '\"':
757 case '\n':
758 case '\r':
759 case '\t':
760 case ' ':
761 case '=':
762 break;
763 default:
764 goto done;
3ff50b79 765 }
1da177e4
LT		 766 }
767done:
768 return i;
769}
770
222f1806
LC		 771static unsigned long num_arg(const char __user * user_buffer,
772 unsigned long maxlen, unsigned long *num)
1da177e4 773{
d6182223 774 int i;
1da177e4 775 *num = 0;
222f1806 776
d6182223 777 for (i = 0; i < maxlen; i++) {
222f1806
LC		 778 char c;
779 if (get_user(c, &user_buffer[i]))
780 return -EFAULT;
781 if ((c >= '0') && (c <= '9')) {
1da177e4 782 *num *= 10;
222f1806 783 *num += c - '0';
1da177e4
LT		 784 } else
785 break;
786 }
787 return i;
788}
789
222f1806 790static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 791{
d6182223 792 int i;
1da177e4 793
d6182223 794 for (i = 0; i < maxlen; i++) {
222f1806
LC		 795 char c;
796 if (get_user(c, &user_buffer[i]))
797 return -EFAULT;
798 switch (c) {
1da177e4
LT		 799 case '\"':
800 case '\n':
801 case '\r':
802 case '\t':
803 case ' ':
804 goto done_str;
805 break;
806 default:
807 break;
3ff50b79 808 }
1da177e4
LT		 809 }
810done_str:
1da177e4
LT		 811 return i;
812}
813
ca6549af
SW		 814static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
815{
816 unsigned n = 0;
817 char c;
818 ssize_t i = 0;
819 int len;
820
821 pkt_dev->nr_labels = 0;
822 do {
823 __u32 tmp;
1ca7768c 824 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 825 if (len <= 0)
826 return len;
827 pkt_dev->labels[n] = htonl(tmp);
828 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
829 pkt_dev->flags |= F_MPLS_RND;
830 i += len;
831 if (get_user(c, &buffer[i]))
832 return -EFAULT;
833 i++;
834 n++;
835 if (n >= MAX_MPLS_LABELS)
836 return -E2BIG;
e71a4783 837 } while (c == ',');
ca6549af
SW		 838
839 pkt_dev->nr_labels = n;
840 return i;
841}
842
222f1806
LC		 843static ssize_t pktgen_if_write(struct file *file,
844 const char __user * user_buffer, size_t count,
845 loff_t * offset)
1da177e4 846{
8a994a71 847 struct seq_file *seq = file->private_data;
222f1806 848 struct pktgen_dev *pkt_dev = seq->private;
d6182223 849 int i, max, len;
1da177e4
LT		 850 char name[16], valstr[32];
851 unsigned long value = 0;
222f1806
LC		 852 char *pg_result = NULL;
853 int tmp = 0;
1da177e4 854 char buf[128];
222f1806
LC		 855
856 pg_result = &(pkt_dev->result[0]);
857
1da177e4 858 if (count < 1) {
f9467eae 859 pr_warning("wrong command format\n");
1da177e4
LT		 860 return -EINVAL;
861 }
222f1806 862
d6182223
PG		 863 max = count;
864 tmp = count_trail_chars(user_buffer, max);
222f1806 865 if (tmp < 0) {
f9467eae 866 pr_warning("illegal format\n");
222f1806 867 return tmp;
1da177e4 868 }
d6182223 869 i = tmp;
222f1806 870
1da177e4
LT		 871 /* Read variable name */
872
873 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 874 if (len < 0)
222f1806 875 return len;
63adc6fb 876
1da177e4 877 memset(name, 0, sizeof(name));
222f1806 878 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 879 return -EFAULT;
880 i += len;
222f1806
LC		 881
882 max = count - i;
1da177e4 883 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 884 if (len < 0)
885 return len;
886
1da177e4
LT		 887 i += len;
888
889 if (debug) {
86c2c0a8 890 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 891 char tb[copy + 1];
892 if (copy_from_user(tb, user_buffer, copy))
1da177e4 893 return -EFAULT;
448d7b5d 894 tb[copy] = 0;
25a8b254 895 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 896 (unsigned long)count, tb);
897 }
1da177e4
LT		 898
899 if (!strcmp(name, "min_pkt_size")) {
900 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 901 if (len < 0)
222f1806 902 return len;
63adc6fb 903
1da177e4 904 i += len;
222f1806
LC		 905 if (value < 14 + 20 + 8)
906 value = 14 + 20 + 8;
907 if (value != pkt_dev->min_pkt_size) {
908 pkt_dev->min_pkt_size = value;
909 pkt_dev->cur_pkt_size = value;
910 }
911 sprintf(pg_result, "OK: min_pkt_size=%u",
912 pkt_dev->min_pkt_size);
1da177e4
LT		 913 return count;
914 }
915
222f1806 916 if (!strcmp(name, "max_pkt_size")) {
1da177e4 917 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 918 if (len < 0)
222f1806 919 return len;
63adc6fb 920
1da177e4 921 i += len;
222f1806
LC		 922 if (value < 14 + 20 + 8)
923 value = 14 + 20 + 8;
924 if (value != pkt_dev->max_pkt_size) {
925 pkt_dev->max_pkt_size = value;
926 pkt_dev->cur_pkt_size = value;
927 }
928 sprintf(pg_result, "OK: max_pkt_size=%u",
929 pkt_dev->max_pkt_size);
1da177e4
LT		 930 return count;
931 }
932
222f1806 933 /* Shortcut for min = max */
1da177e4
LT		 934
935 if (!strcmp(name, "pkt_size")) {
936 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 937 if (len < 0)
222f1806 938 return len;
63adc6fb 939
1da177e4 940 i += len;
222f1806
LC		 941 if (value < 14 + 20 + 8)
942 value = 14 + 20 + 8;
943 if (value != pkt_dev->min_pkt_size) {
944 pkt_dev->min_pkt_size = value;
945 pkt_dev->max_pkt_size = value;
946 pkt_dev->cur_pkt_size = value;
947 }
1da177e4
LT		 948 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
949 return count;
950 }
951
222f1806 952 if (!strcmp(name, "debug")) {
1da177e4 953 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 954 if (len < 0)
222f1806 955 return len;
63adc6fb 956
1da177e4 957 i += len;
222f1806 958 debug = value;
1da177e4
LT		 959 sprintf(pg_result, "OK: debug=%u", debug);
960 return count;
961 }
962
222f1806 963 if (!strcmp(name, "frags")) {
1da177e4 964 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 965 if (len < 0)
222f1806 966 return len;
63adc6fb 967
1da177e4
LT		 968 i += len;
969 pkt_dev->nfrags = value;
970 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
971 return count;
972 }
973 if (!strcmp(name, "delay")) {
974 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 975 if (len < 0)
222f1806 976 return len;
63adc6fb 977
1da177e4 978 i += len;
fd29cf72
SH		 979 if (value == 0x7FFFFFFF)
980 pkt_dev->delay = ULLONG_MAX;
981 else
9240d715 982 pkt_dev->delay = (u64)value;
fd29cf72
SH		 983
984 sprintf(pg_result, "OK: delay=%llu",
985 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 986 return count;
987 }
43d28b65
DT		 988 if (!strcmp(name, "rate")) {
989 len = num_arg(&user_buffer[i], 10, &value);
990 if (len < 0)
991 return len;
992
993 i += len;
994 if (!value)
995 return len;
996 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
997 if (debug)
f9467eae 998 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 999
1000 sprintf(pg_result, "OK: rate=%lu", value);
1001 return count;
1002 }
1003 if (!strcmp(name, "ratep")) {
1004 len = num_arg(&user_buffer[i], 10, &value);
1005 if (len < 0)
1006 return len;
1007
1008 i += len;
1009 if (!value)
1010 return len;
1011 pkt_dev->delay = NSEC_PER_SEC/value;
1012 if (debug)
f9467eae 1013 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1014
1015 sprintf(pg_result, "OK: rate=%lu", value);
1016 return count;
1017 }
222f1806 1018 if (!strcmp(name, "udp_src_min")) {
1da177e4 1019 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1020 if (len < 0)
222f1806 1021 return len;
63adc6fb 1022
1da177e4 1023 i += len;
222f1806
LC		 1024 if (value != pkt_dev->udp_src_min) {
1025 pkt_dev->udp_src_min = value;
1026 pkt_dev->cur_udp_src = value;
1027 }
1da177e4
LT		 1028 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1029 return count;
1030 }
222f1806 1031 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1032 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1033 if (len < 0)
222f1806 1034 return len;
63adc6fb 1035
1da177e4 1036 i += len;
222f1806
LC		 1037 if (value != pkt_dev->udp_dst_min) {
1038 pkt_dev->udp_dst_min = value;
1039 pkt_dev->cur_udp_dst = value;
1040 }
1da177e4
LT		 1041 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1042 return count;
1043 }
222f1806 1044 if (!strcmp(name, "udp_src_max")) {
1da177e4 1045 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1046 if (len < 0)
222f1806 1047 return len;
63adc6fb 1048
1da177e4 1049 i += len;
222f1806
LC		 1050 if (value != pkt_dev->udp_src_max) {
1051 pkt_dev->udp_src_max = value;
1052 pkt_dev->cur_udp_src = value;
1053 }
1da177e4
LT		 1054 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1055 return count;
1056 }
222f1806 1057 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1058 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1059 if (len < 0)
222f1806 1060 return len;
63adc6fb 1061
1da177e4 1062 i += len;
222f1806
LC		 1063 if (value != pkt_dev->udp_dst_max) {
1064 pkt_dev->udp_dst_max = value;
1065 pkt_dev->cur_udp_dst = value;
1066 }
1da177e4
LT		 1067 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1068 return count;
1069 }
1070 if (!strcmp(name, "clone_skb")) {
1071 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1072 if (len < 0)
222f1806 1073 return len;
63adc6fb 1074
1da177e4 1075 i += len;
222f1806
LC		 1076 pkt_dev->clone_skb = value;
1077
1da177e4
LT		 1078 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1079 return count;
1080 }
1081 if (!strcmp(name, "count")) {
1082 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1083 if (len < 0)
222f1806 1084 return len;
63adc6fb 1085
1da177e4
LT		 1086 i += len;
1087 pkt_dev->count = value;
1088 sprintf(pg_result, "OK: count=%llu",
222f1806 1089 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1090 return count;
1091 }
1092 if (!strcmp(name, "src_mac_count")) {
1093 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1094 if (len < 0)
222f1806 1095 return len;
63adc6fb 1096
1da177e4
LT		 1097 i += len;
1098 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1099 pkt_dev->src_mac_count = value;
1100 pkt_dev->cur_src_mac_offset = 0;
1101 }
1102 sprintf(pg_result, "OK: src_mac_count=%d",
1103 pkt_dev->src_mac_count);
1da177e4
LT		 1104 return count;
1105 }
1106 if (!strcmp(name, "dst_mac_count")) {
1107 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1108 if (len < 0)
222f1806 1109 return len;
63adc6fb 1110
1da177e4
LT		 1111 i += len;
1112 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1113 pkt_dev->dst_mac_count = value;
1114 pkt_dev->cur_dst_mac_offset = 0;
1115 }
1116 sprintf(pg_result, "OK: dst_mac_count=%d",
1117 pkt_dev->dst_mac_count);
1da177e4
LT		 1118 return count;
1119 }
e99b99b4
RO		 1120 if (!strcmp(name, "node")) {
1121 len = num_arg(&user_buffer[i], 10, &value);
1122 if (len < 0)
1123 return len;
1124
1125 i += len;
1126
1127 if (node_possible(value)) {
1128 pkt_dev->node = value;
1129 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
1130 }
1131 else
1132 sprintf(pg_result, "ERROR: node not possible");
1133 return count;
1134 }
1da177e4 1135 if (!strcmp(name, "flag")) {
222f1806
LC		 1136 char f[32];
1137 memset(f, 0, 32);
1da177e4 1138 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1139 if (len < 0)
222f1806 1140 return len;
63adc6fb 1141
1da177e4
LT		 1142 if (copy_from_user(f, &user_buffer[i], len))
1143 return -EFAULT;
1144 i += len;
222f1806
LC		 1145 if (strcmp(f, "IPSRC_RND") == 0)
1146 pkt_dev->flags |= F_IPSRC_RND;
1147
1148 else if (strcmp(f, "!IPSRC_RND") == 0)
1149 pkt_dev->flags &= ~F_IPSRC_RND;
1150
1151 else if (strcmp(f, "TXSIZE_RND") == 0)
1152 pkt_dev->flags |= F_TXSIZE_RND;
1153
1154 else if (strcmp(f, "!TXSIZE_RND") == 0)
1155 pkt_dev->flags &= ~F_TXSIZE_RND;
1156
1157 else if (strcmp(f, "IPDST_RND") == 0)
1158 pkt_dev->flags |= F_IPDST_RND;
1159
1160 else if (strcmp(f, "!IPDST_RND") == 0)
1161 pkt_dev->flags &= ~F_IPDST_RND;
1162
1163 else if (strcmp(f, "UDPSRC_RND") == 0)
1164 pkt_dev->flags |= F_UDPSRC_RND;
1165
1166 else if (strcmp(f, "!UDPSRC_RND") == 0)
1167 pkt_dev->flags &= ~F_UDPSRC_RND;
1168
1169 else if (strcmp(f, "UDPDST_RND") == 0)
1170 pkt_dev->flags |= F_UDPDST_RND;
1171
1172 else if (strcmp(f, "!UDPDST_RND") == 0)
1173 pkt_dev->flags &= ~F_UDPDST_RND;
1174
1175 else if (strcmp(f, "MACSRC_RND") == 0)
1176 pkt_dev->flags |= F_MACSRC_RND;
1177
1178 else if (strcmp(f, "!MACSRC_RND") == 0)
1179 pkt_dev->flags &= ~F_MACSRC_RND;
1180
1181 else if (strcmp(f, "MACDST_RND") == 0)
1182 pkt_dev->flags |= F_MACDST_RND;
1183
1184 else if (strcmp(f, "!MACDST_RND") == 0)
1185 pkt_dev->flags &= ~F_MACDST_RND;
1186
ca6549af
SW		 1187 else if (strcmp(f, "MPLS_RND") == 0)
1188 pkt_dev->flags |= F_MPLS_RND;
1189
1190 else if (strcmp(f, "!MPLS_RND") == 0)
1191 pkt_dev->flags &= ~F_MPLS_RND;
1192
34954ddc
FF		 1193 else if (strcmp(f, "VID_RND") == 0)
1194 pkt_dev->flags |= F_VID_RND;
1195
1196 else if (strcmp(f, "!VID_RND") == 0)
1197 pkt_dev->flags &= ~F_VID_RND;
1198
1199 else if (strcmp(f, "SVID_RND") == 0)
1200 pkt_dev->flags |= F_SVID_RND;
1201
1202 else if (strcmp(f, "!SVID_RND") == 0)
1203 pkt_dev->flags &= ~F_SVID_RND;
1204
007a531b
JHS		 1205 else if (strcmp(f, "FLOW_SEQ") == 0)
1206 pkt_dev->flags |= F_FLOW_SEQ;
1207
45b270f8
RO		 1208 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1209 pkt_dev->flags |= F_QUEUE_MAP_RND;
1210
1211 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1212 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1213
1214 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1215 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1216
1217 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1218 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1219#ifdef CONFIG_XFRM
1220 else if (strcmp(f, "IPSEC") == 0)
1221 pkt_dev->flags |= F_IPSEC_ON;
1222#endif
1223
1ca7768c
FF		 1224 else if (strcmp(f, "!IPV6") == 0)
1225 pkt_dev->flags &= ~F_IPV6;
1226
e99b99b4
RO		 1227 else if (strcmp(f, "NODE_ALLOC") == 0)
1228 pkt_dev->flags |= F_NODE;
1229
1230 else if (strcmp(f, "!NODE_ALLOC") == 0)
1231 pkt_dev->flags &= ~F_NODE;
1232
222f1806
LC		 1233 else {
1234 sprintf(pg_result,
1235 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1236 f,
1ca7768c 1237 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1238 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1239 return count;
1240 }
1da177e4
LT		 1241 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1242 return count;
1243 }
1244 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1245 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1246 if (len < 0)
222f1806 1247 return len;
1da177e4 1248
222f1806 1249 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1250 return -EFAULT;
222f1806
LC		 1251 buf[len] = 0;
1252 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1253 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1254 strncpy(pkt_dev->dst_min, buf, len);
1255 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1256 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1257 }
1258 if (debug)
25a8b254 1259 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1260 pkt_dev->dst_min);
1261 i += len;
1da177e4
LT		 1262 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1263 return count;
1264 }
1265 if (!strcmp(name, "dst_max")) {
1266 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1267 if (len < 0)
222f1806 1268 return len;
63adc6fb 1269
1da177e4 1270
222f1806 1271 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1272 return -EFAULT;
1273
222f1806
LC		 1274 buf[len] = 0;
1275 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1276 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1277 strncpy(pkt_dev->dst_max, buf, len);
1278 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1279 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1280 }
1281 if (debug)
25a8b254 1282 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1283 pkt_dev->dst_max);
1da177e4
LT		 1284 i += len;
1285 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1286 return count;
1287 }
1288 if (!strcmp(name, "dst6")) {
1289 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1290 if (len < 0)
1291 return len;
1da177e4
LT		 1292
1293 pkt_dev->flags |= F_IPV6;
1294
222f1806 1295 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1296 return -EFAULT;
222f1806 1297 buf[len] = 0;
1da177e4
LT		 1298
1299 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1300 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1301
1302 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1303
222f1806 1304 if (debug)
25a8b254 1305 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1306
222f1806 1307 i += len;
1da177e4
LT		 1308 sprintf(pg_result, "OK: dst6=%s", buf);
1309 return count;
1310 }
1311 if (!strcmp(name, "dst6_min")) {
1312 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1313 if (len < 0)
1314 return len;
1da177e4
LT		 1315
1316 pkt_dev->flags |= F_IPV6;
1317
222f1806 1318 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1319 return -EFAULT;
222f1806 1320 buf[len] = 0;
1da177e4
LT		 1321
1322 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1323 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1324
222f1806
LC		 1325 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1326 &pkt_dev->min_in6_daddr);
1327 if (debug)
25a8b254 1328 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1329
222f1806 1330 i += len;
1da177e4
LT		 1331 sprintf(pg_result, "OK: dst6_min=%s", buf);
1332 return count;
1333 }
1334 if (!strcmp(name, "dst6_max")) {
1335 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1336 if (len < 0)
1337 return len;
1da177e4
LT		 1338
1339 pkt_dev->flags |= F_IPV6;
1340
222f1806 1341 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1342 return -EFAULT;
222f1806 1343 buf[len] = 0;
1da177e4
LT		 1344
1345 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1346 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1347
222f1806 1348 if (debug)
25a8b254 1349 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1350
222f1806 1351 i += len;
1da177e4
LT		 1352 sprintf(pg_result, "OK: dst6_max=%s", buf);
1353 return count;
1354 }
1355 if (!strcmp(name, "src6")) {
1356 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1357 if (len < 0)
1358 return len;
1da177e4
LT		 1359
1360 pkt_dev->flags |= F_IPV6;
1361
222f1806 1362 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1363 return -EFAULT;
222f1806 1364 buf[len] = 0;
1da177e4
LT		 1365
1366 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1367 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1368
1369 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1370
222f1806 1371 if (debug)
25a8b254 1372 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1373
1374 i += len;
1da177e4
LT		 1375 sprintf(pg_result, "OK: src6=%s", buf);
1376 return count;
1377 }
1378 if (!strcmp(name, "src_min")) {
1379 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1380 if (len < 0)
222f1806 1381 return len;
63adc6fb 1382
222f1806 1383 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1384 return -EFAULT;
222f1806
LC		 1385 buf[len] = 0;
1386 if (strcmp(buf, pkt_dev->src_min) != 0) {
1387 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1388 strncpy(pkt_dev->src_min, buf, len);
1389 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1390 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1391 }
1392 if (debug)
25a8b254 1393 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1394 pkt_dev->src_min);
1da177e4
LT		 1395 i += len;
1396 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1397 return count;
1398 }
1399 if (!strcmp(name, "src_max")) {
1400 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1401 if (len < 0)
222f1806 1402 return len;
63adc6fb 1403
222f1806 1404 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1405 return -EFAULT;
222f1806
LC		 1406 buf[len] = 0;
1407 if (strcmp(buf, pkt_dev->src_max) != 0) {
1408 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1409 strncpy(pkt_dev->src_max, buf, len);
1410 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1411 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1412 }
1413 if (debug)
25a8b254 1414 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1415 pkt_dev->src_max);
1da177e4
LT		 1416 i += len;
1417 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1418 return count;
1419 }
1420 if (!strcmp(name, "dst_mac")) {
1421 char *v = valstr;
f404e9a6 1422 unsigned char old_dmac[ETH_ALEN];
1da177e4 1423 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1424 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1425
1da177e4 1426 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1427 if (len < 0)
222f1806 1428 return len;
63adc6fb 1429
1da177e4 1430 memset(valstr, 0, sizeof(valstr));
222f1806 1431 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1432 return -EFAULT;
1433 i += len;
1434
222f1806 1435 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
451e07a2
AS		 1436 int value;
1437
1438 value = hex_to_bin(*v);
1439 if (value >= 0)
1440 *m = *m * 16 + value;
1441
1da177e4
LT		 1442 if (*v == ':') {
1443 m++;
1444 *m = 0;
1445 }
1446 }
1447
1448 /* Set up Dest MAC */
f404e9a6
KK		 1449 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1450 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1451
1da177e4
LT		 1452 sprintf(pg_result, "OK: dstmac");
1453 return count;
1454 }
1455 if (!strcmp(name, "src_mac")) {
1456 char *v = valstr;
ce5d0b47 1457 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1458 unsigned char *m = pkt_dev->src_mac;
1459
ce5d0b47
AR		 1460 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1461
1da177e4 1462 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1463 if (len < 0)
222f1806 1464 return len;
63adc6fb 1465
1da177e4 1466 memset(valstr, 0, sizeof(valstr));
222f1806 1467 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1468 return -EFAULT;
1469 i += len;
1470
222f1806 1471 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
451e07a2
AS		 1472 int value;
1473
1474 value = hex_to_bin(*v);
1475 if (value >= 0)
1476 *m = *m * 16 + value;
1477
1da177e4
LT		 1478 if (*v == ':') {
1479 m++;
1480 *m = 0;
1481 }
222f1806 1482 }
1da177e4 1483
ce5d0b47
AR		 1484 /* Set up Src MAC */
1485 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1486 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1487
222f1806 1488 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1489 return count;
1490 }
1491
222f1806
LC		 1492 if (!strcmp(name, "clear_counters")) {
1493 pktgen_clear_counters(pkt_dev);
1494 sprintf(pg_result, "OK: Clearing counters.\n");
1495 return count;
1496 }
1da177e4
LT		 1497
1498 if (!strcmp(name, "flows")) {
1499 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1500 if (len < 0)
222f1806 1501 return len;
63adc6fb 1502
1da177e4
LT		 1503 i += len;
1504 if (value > MAX_CFLOWS)
1505 value = MAX_CFLOWS;
1506
1507 pkt_dev->cflows = value;
1508 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1509 return count;
1510 }
1511
1512 if (!strcmp(name, "flowlen")) {
1513 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1514 if (len < 0)
222f1806 1515 return len;
63adc6fb 1516
1da177e4
LT		 1517 i += len;
1518 pkt_dev->lflow = value;
1519 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1520 return count;
1521 }
222f1806 1522
45b270f8
RO		 1523 if (!strcmp(name, "queue_map_min")) {
1524 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1525 if (len < 0)
45b270f8 1526 return len;
63adc6fb 1527
45b270f8
RO		 1528 i += len;
1529 pkt_dev->queue_map_min = value;
1530 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1531 return count;
1532 }
1533
1534 if (!strcmp(name, "queue_map_max")) {
1535 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1536 if (len < 0)
45b270f8 1537 return len;
63adc6fb 1538
45b270f8
RO		 1539 i += len;
1540 pkt_dev->queue_map_max = value;
1541 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1542 return count;
1543 }
1544
ca6549af 1545 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1546 unsigned n, cnt;
1547
ca6549af 1548 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1549 if (len < 0)
1550 return len;
ca6549af 1551 i += len;
cfcabdcc 1552 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1553 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1554 cnt += sprintf(pg_result + cnt,
1555 "%08x%s", ntohl(pkt_dev->labels[n]),
1556 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1557
1558 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1559 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1560 pkt_dev->svlan_id = 0xffff;
1561
1562 if (debug)
25a8b254 1563 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1564 }
1565 return count;
1566 }
1567
1568 if (!strcmp(name, "vlan_id")) {
1569 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1570 if (len < 0)
34954ddc 1571 return len;
63adc6fb 1572
34954ddc
FF		 1573 i += len;
1574 if (value <= 4095) {
1575 pkt_dev->vlan_id = value; /* turn on VLAN */
1576
1577 if (debug)
25a8b254 1578 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1579
1580 if (debug && pkt_dev->nr_labels)
25a8b254 1581 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1582
1583 pkt_dev->nr_labels = 0; /* turn off MPLS */
1584 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1585 } else {
1586 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1587 pkt_dev->svlan_id = 0xffff;
1588
1589 if (debug)
25a8b254 1590 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1591 }
1592 return count;
1593 }
1594
1595 if (!strcmp(name, "vlan_p")) {
1596 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1597 if (len < 0)
34954ddc 1598 return len;
63adc6fb 1599
34954ddc
FF		 1600 i += len;
1601 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1602 pkt_dev->vlan_p = value;
1603 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1604 } else {
1605 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1606 }
1607 return count;
1608 }
1609
1610 if (!strcmp(name, "vlan_cfi")) {
1611 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1612 if (len < 0)
34954ddc 1613 return len;
63adc6fb 1614
34954ddc
FF		 1615 i += len;
1616 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1617 pkt_dev->vlan_cfi = value;
1618 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1619 } else {
1620 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1621 }
1622 return count;
1623 }
1624
1625 if (!strcmp(name, "svlan_id")) {
1626 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1627 if (len < 0)
34954ddc 1628 return len;
63adc6fb 1629
34954ddc
FF		 1630 i += len;
1631 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1632 pkt_dev->svlan_id = value; /* turn on SVLAN */
1633
1634 if (debug)
25a8b254 1635 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1636
1637 if (debug && pkt_dev->nr_labels)
25a8b254 1638 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1639
1640 pkt_dev->nr_labels = 0; /* turn off MPLS */
1641 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1642 } else {
1643 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1644 pkt_dev->svlan_id = 0xffff;
1645
1646 if (debug)
25a8b254 1647 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1648 }
1649 return count;
1650 }
1651
1652 if (!strcmp(name, "svlan_p")) {
1653 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1654 if (len < 0)
34954ddc 1655 return len;
63adc6fb 1656
34954ddc
FF		 1657 i += len;
1658 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1659 pkt_dev->svlan_p = value;
1660 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1661 } else {
1662 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1663 }
1664 return count;
1665 }
1666
1667 if (!strcmp(name, "svlan_cfi")) {
1668 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1669 if (len < 0)
34954ddc 1670 return len;
63adc6fb 1671
34954ddc
FF		 1672 i += len;
1673 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1674 pkt_dev->svlan_cfi = value;
1675 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1676 } else {
1677 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1678 }
ca6549af
SW		 1679 return count;
1680 }
1681
1ca7768c
FF		 1682 if (!strcmp(name, "tos")) {
1683 __u32 tmp_value = 0;
1684 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1685 if (len < 0)
1ca7768c 1686 return len;
63adc6fb 1687
1ca7768c
FF		 1688 i += len;
1689 if (len == 2) {
1690 pkt_dev->tos = tmp_value;
1691 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1692 } else {
1693 sprintf(pg_result, "ERROR: tos must be 00-ff");
1694 }
1695 return count;
1696 }
1697
1698 if (!strcmp(name, "traffic_class")) {
1699 __u32 tmp_value = 0;
1700 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1701 if (len < 0)
1ca7768c 1702 return len;
63adc6fb 1703
1ca7768c
FF		 1704 i += len;
1705 if (len == 2) {
1706 pkt_dev->traffic_class = tmp_value;
1707 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1708 } else {
1709 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1710 }
1711 return count;
1712 }
1713
1da177e4
LT		 1714 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1715 return -EINVAL;
1716}
1717
d50a6b56 1718static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1719{
d50a6b56
SH		 1720 return single_open(file, pktgen_if_show, PDE(inode)->data);
1721}
1da177e4 1722
9a32144e 1723static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1724 .owner = THIS_MODULE,
1725 .open = pktgen_if_open,
1726 .read = seq_read,
1727 .llseek = seq_lseek,
1728 .write = pktgen_if_write,
1729 .release = single_release,
d50a6b56 1730};
1da177e4 1731
d50a6b56
SH		 1732static int pktgen_thread_show(struct seq_file *seq, void *v)
1733{
222f1806 1734 struct pktgen_thread *t = seq->private;
648fda74 1735 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1736
1737 BUG_ON(!t);
1da177e4 1738
222f1806 1739 seq_printf(seq, "Running: ");
1da177e4 1740
222f1806 1741 if_lock(t);
c26a8016 1742 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1743 if (pkt_dev->running)
593f63b0 1744 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1745
222f1806
LC		 1746 seq_printf(seq, "\nStopped: ");
1747
c26a8016 1748 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1749 if (!pkt_dev->running)
593f63b0 1750 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1751
1752 if (t->result[0])
d50a6b56 1753 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1754 else
d50a6b56 1755 seq_printf(seq, "\nResult: NA\n");
1da177e4 1756
222f1806 1757 if_unlock(t);
1da177e4 1758
d50a6b56 1759 return 0;
1da177e4
LT		 1760}
1761
d50a6b56 1762static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1763 const char __user * user_buffer,
1764 size_t count, loff_t * offset)
1da177e4 1765{
8a994a71 1766 struct seq_file *seq = file->private_data;
222f1806 1767 struct pktgen_thread *t = seq->private;
d6182223 1768 int i, max, len, ret;
1da177e4 1769 char name[40];
222f1806 1770 char *pg_result;
d50a6b56 1771
1da177e4 1772 if (count < 1) {
222f1806 1773 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1774 return -EINVAL;
1775 }
d50a6b56 1776
d6182223
PG		 1777 max = count;
1778 len = count_trail_chars(user_buffer, max);
222f1806 1779 if (len < 0)
d50a6b56
SH		 1780 return len;
1781
d6182223 1782 i = len;
d50a6b56 1783
1da177e4
LT		 1784 /* Read variable name */
1785
1786 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1787 if (len < 0)
d50a6b56 1788 return len;
222f1806 1789
1da177e4
LT		 1790 memset(name, 0, sizeof(name));
1791 if (copy_from_user(name, &user_buffer[i], len))
1792 return -EFAULT;
1793 i += len;
d50a6b56 1794
222f1806 1795 max = count - i;
1da177e4 1796 len = count_trail_chars(&user_buffer[i], max);
222f1806 1797 if (len < 0)
d50a6b56
SH		 1798 return len;
1799
1da177e4
LT		 1800 i += len;
1801
d50a6b56 1802 if (debug)
25a8b254
DM		 1803 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1804 name, (unsigned long)count);
1da177e4 1805
222f1806 1806 if (!t) {
f9467eae 1807 pr_err("ERROR: No thread\n");
1da177e4
LT		 1808 ret = -EINVAL;
1809 goto out;
1810 }
1811
1812 pg_result = &(t->result[0]);
1813
222f1806
LC		 1814 if (!strcmp(name, "add_device")) {
1815 char f[32];
1816 memset(f, 0, 32);
1da177e4 1817 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1818 if (len < 0) {
1819 ret = len;
1da177e4
LT		 1820 goto out;
1821 }
222f1806 1822 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1823 return -EFAULT;
1824 i += len;
6146e6a4 1825 mutex_lock(&pktgen_thread_lock);
222f1806 1826 pktgen_add_device(t, f);
6146e6a4 1827 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1828 ret = count;
1829 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1830 goto out;
1831 }
1832
222f1806 1833 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1834 mutex_lock(&pktgen_thread_lock);
95ed63f7 1835 t->control |= T_REMDEVALL;
6146e6a4 1836 mutex_unlock(&pktgen_thread_lock);
222f1806 1837 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1838 ret = count;
222f1806 1839 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1840 goto out;
1841 }
1842
222f1806 1843 if (!strcmp(name, "max_before_softirq")) {
b163911f 1844 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1845 ret = count;
1da177e4
LT		 1846 goto out;
1847 }
1848
1849 ret = -EINVAL;
222f1806 1850out:
1da177e4
LT		 1851 return ret;
1852}
1853
d50a6b56 1854static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1855{
d50a6b56 1856 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1857}
1858
9a32144e 1859static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1860 .owner = THIS_MODULE,
1861 .open = pktgen_thread_open,
1862 .read = seq_read,
1863 .llseek = seq_lseek,
1864 .write = pktgen_thread_write,
1865 .release = single_release,
d50a6b56 1866};
1da177e4
LT		 1867
1868/* Think find or remove for NN */
222f1806 1869static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1870{
1871 struct pktgen_thread *t;
1872 struct pktgen_dev *pkt_dev = NULL;
3e984840 1873 bool exact = (remove == FIND);
1da177e4 1874
cdcdbe0b 1875 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1876 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1877 if (pkt_dev) {
222f1806
LC		 1878 if (remove) {
1879 if_lock(t);
1880 pkt_dev->removal_mark = 1;
1881 t->control |= T_REMDEV;
1882 if_unlock(t);
1883 }
1da177e4
LT		 1884 break;
1885 }
1da177e4 1886 }
222f1806 1887 return pkt_dev;
1da177e4
LT		 1888}
1889
95ed63f7
AK		 1890/*
1891 * mark a device for removal
1892 */
39df232f 1893static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1894{
1895 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1896 const int max_tries = 10, msec_per_try = 125;
1897 int i = 0;
95ed63f7 1898
6146e6a4 1899 mutex_lock(&pktgen_thread_lock);
f9467eae 1900 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1901
222f1806 1902 while (1) {
95ed63f7
AK		 1903
1904 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1905 if (pkt_dev == NULL)
1906 break; /* success */
95ed63f7 1907
6146e6a4 1908 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1909 pr_debug("%s: waiting for %s to disappear....\n",
1910 __func__, ifname);
95ed63f7 1911 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1912 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1913
1914 if (++i >= max_tries) {
f9467eae
JP		 1915 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1916 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1917 break;
1918 }
1919
1920 }
1921
6146e6a4 1922 mutex_unlock(&pktgen_thread_lock);
39df232f 1923}
95ed63f7 1924
39df232f
SH		 1925static void pktgen_change_name(struct net_device *dev)
1926{
1927 struct pktgen_thread *t;
1928
1929 list_for_each_entry(t, &pktgen_threads, th_list) {
1930 struct pktgen_dev *pkt_dev;
1931
1932 list_for_each_entry(pkt_dev, &t->if_list, list) {
1933 if (pkt_dev->odev != dev)
1934 continue;
1935
1936 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1937
2975315b
AD		 1938 pkt_dev->entry = proc_create_data(dev->name, 0600,
1939 pg_proc_dir,
1940 &pktgen_if_fops,
1941 pkt_dev);
39df232f 1942 if (!pkt_dev->entry)
f9467eae
JP		 1943 pr_err("can't move proc entry for '%s'\n",
1944 dev->name);
39df232f
SH		 1945 break;
1946 }
1947 }
1da177e4
LT		 1948}
1949
222f1806
LC		 1950static int pktgen_device_event(struct notifier_block *unused,
1951 unsigned long event, void *ptr)
1da177e4 1952{
39df232f 1953 struct net_device *dev = ptr;
1da177e4 1954
721499e8 1955 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1956 return NOTIFY_DONE;
1957
1da177e4
LT		 1958 /* It is OK that we do not hold the group lock right now,
1959 * as we run under the RTNL lock.
1960 */
1961
1962 switch (event) {
39df232f
SH		 1963 case NETDEV_CHANGENAME:
1964 pktgen_change_name(dev);
1da177e4 1965 break;
222f1806 1966
1da177e4 1967 case NETDEV_UNREGISTER:
222f1806 1968 pktgen_mark_device(dev->name);
1da177e4 1969 break;
3ff50b79 1970 }
1da177e4
LT		 1971
1972 return NOTIFY_DONE;
1973}
1974
63adc6fb
SH		 1975static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1976 const char *ifname)
e6fce5b9
RO		 1977{
1978 char b[IFNAMSIZ+5];
d6182223 1979 int i;
e6fce5b9 1980
63adc6fb
SH		 1981 for (i = 0; ifname[i] != '@'; i++) {
1982 if (i == IFNAMSIZ)
e6fce5b9
RO		 1983 break;
1984
1985 b[i] = ifname[i];
1986 }
1987 b[i] = 0;
1988
1989 return dev_get_by_name(&init_net, b);
1990}
1991
1992
1da177e4
LT		 1993/* Associate pktgen_dev with a device. */
1994
39df232f 1995static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1996{
1da177e4 1997 struct net_device *odev;
39df232f 1998 int err;
1da177e4
LT		 1999
2000 /* Clean old setups */
1da177e4
LT		 2001 if (pkt_dev->odev) {
2002 dev_put(pkt_dev->odev);
222f1806
LC		 2003 pkt_dev->odev = NULL;
2004 }
1da177e4 2005
e6fce5b9 2006 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 2007 if (!odev) {
f9467eae 2008 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2009 return -ENODEV;
1da177e4 2010 }
39df232f 2011
1da177e4 2012 if (odev->type != ARPHRD_ETHER) {
f9467eae 2013 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2014 err = -EINVAL;
2015 } else if (!netif_running(odev)) {
f9467eae 2016 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2017 err = -ENETDOWN;
2018 } else {
2019 pkt_dev->odev = odev;
2020 return 0;
1da177e4 2021 }
1da177e4 2022
1da177e4 2023 dev_put(odev);
39df232f 2024 return err;
1da177e4
LT		 2025}
2026
2027/* Read pkt_dev from the interface and set up internal pktgen_dev
2028 * structure to have the right information to create/send packets
2029 */
2030static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2031{
64c00d81
AG		 2032 int ntxq;
2033
222f1806 2034 if (!pkt_dev->odev) {
f9467eae 2035 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2036 sprintf(pkt_dev->result,
2037 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2038 return;
2039 }
2040
64c00d81
AG		 2041 /* make sure that we don't pick a non-existing transmit queue */
2042 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2043
64c00d81 2044 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2045 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2046 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2047 pkt_dev->odevname);
64c00d81
AG		 2048 pkt_dev->queue_map_min = ntxq - 1;
2049 }
88271660 2050 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2051 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2052 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2053 pkt_dev->odevname);
64c00d81
AG		 2054 pkt_dev->queue_map_max = ntxq - 1;
2055 }
2056
222f1806 2057 /* Default to the interface's mac if not explicitly set. */
1da177e4 2058
f404e9a6 2059 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2060 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2061
222f1806 2062 /* Set up Dest MAC */
f404e9a6 2063 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2064
222f1806
LC		 2065 /* Set up pkt size */
2066 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2067
2068 if (pkt_dev->flags & F_IPV6) {
1da177e4 2069 /*
4ec93edb 2070 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2071 * gets exported
2072 */
2073
2074#ifdef NOTNOW
222f1806 2075 int i, set = 0, err = 1;
1da177e4
LT		 2076 struct inet6_dev *idev;
2077
222f1806
LC		 2078 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2079 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2080 set = 1;
2081 break;
2082 }
2083
222f1806
LC		 2084 if (!set) {
2085
1da177e4
LT		 2086 /*
2087 * Use linklevel address if unconfigured.
2088 *
2089 * use ipv6_get_lladdr if/when it's get exported
2090 */
2091
8814c4b5 2092 rcu_read_lock();
63adc6fb
SH		 2093 idev = __in6_dev_get(pkt_dev->odev);
2094 if (idev) {
1da177e4
LT		 2095 struct inet6_ifaddr *ifp;
2096
2097 read_lock_bh(&idev->lock);
222f1806
LC		 2098 for (ifp = idev->addr_list; ifp;
2099 ifp = ifp->if_next) {
f64f9e71
JP		 2100 if (ifp->scope == IFA_LINK &&
2101 !(ifp->flags & IFA_F_TENTATIVE)) {
222f1806
LC		 2102 ipv6_addr_copy(&pkt_dev->
2103 cur_in6_saddr,
2104 &ifp->addr);
1da177e4
LT		 2105 err = 0;
2106 break;
2107 }
2108 }
2109 read_unlock_bh(&idev->lock);
2110 }
8814c4b5 2111 rcu_read_unlock();
222f1806 2112 if (err)
f9467eae 2113 pr_err("ERROR: IPv6 link address not available\n");
1da177e4
LT		 2114 }
2115#endif
222f1806 2116 } else {
1da177e4
LT		 2117 pkt_dev->saddr_min = 0;
2118 pkt_dev->saddr_max = 0;
2119 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2120
2121 struct in_device *in_dev;
1da177e4
LT		 2122
2123 rcu_read_lock();
e5ed6399 2124 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2125 if (in_dev) {
2126 if (in_dev->ifa_list) {
222f1806
LC		 2127 pkt_dev->saddr_min =
2128 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2129 pkt_dev->saddr_max = pkt_dev->saddr_min;
2130 }
1da177e4
LT		 2131 }
2132 rcu_read_unlock();
222f1806 2133 } else {
1da177e4
LT		 2134 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2135 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2136 }
2137
2138 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2139 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2140 }
222f1806
LC		 2141 /* Initialize current values. */
2142 pkt_dev->cur_dst_mac_offset = 0;
2143 pkt_dev->cur_src_mac_offset = 0;
2144 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2145 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2146 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2147 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2148 pkt_dev->nflows = 0;
2149}
2150
fd29cf72
SH		 2151
2152static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2153{
ef87979c 2154 ktime_t start_time, end_time;
417bc4b8 2155 s64 remaining;
2bc481cf
SH		 2156 struct hrtimer_sleeper t;
2157
2158 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2159 hrtimer_set_expires(&t.timer, spin_until);
2160
43d28b65 2161 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2162 if (remaining <= 0) {
2163 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2164 return;
417bc4b8 2165 }
2bc481cf 2166
ef87979c 2167 start_time = ktime_now();
43d28b65
DT		 2168 if (remaining < 100000)
2169 ndelay(remaining); /* really small just spin */
2bc481cf
SH		 2170 else {
2171 /* see do_nanosleep */
2172 hrtimer_init_sleeper(&t, current);
2173 do {
2174 set_current_state(TASK_INTERRUPTIBLE);
2175 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2176 if (!hrtimer_active(&t.timer))
2177 t.task = NULL;
2178
2179 if (likely(t.task))
1da177e4 2180 schedule();
1da177e4 2181
2bc481cf
SH		 2182 hrtimer_cancel(&t.timer);
2183 } while (t.task && pkt_dev->running && !signal_pending(current));
2184 __set_current_state(TASK_RUNNING);
1da177e4 2185 }
ef87979c
SH		 2186 end_time = ktime_now();
2187
2188 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2189 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2190}
2191
16dab72f
JHS		 2192static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2193{
a553e4a6 2194 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2195 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2196 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2197 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2198}
2199
648fda74 2200static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2201{
648fda74 2202 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2203}
2204
2205static inline int f_pick(struct pktgen_dev *pkt_dev)
2206{
2207 int flow = pkt_dev->curfl;
2208
2209 if (pkt_dev->flags & F_FLOW_SEQ) {
2210 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2211 /* reset time */
2212 pkt_dev->flows[flow].count = 0;
1211a645 2213 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2214 pkt_dev->curfl += 1;
2215 if (pkt_dev->curfl >= pkt_dev->cflows)
2216 pkt_dev->curfl = 0; /*reset */
2217 }
2218 } else {
2219 flow = random32() % pkt_dev->cflows;
1211a645 2220 pkt_dev->curfl = flow;
007a531b 2221
1211a645 2222 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2223 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2224 pkt_dev->flows[flow].flags = 0;
2225 }
007a531b
JHS		 2226 }
2227
2228 return pkt_dev->curfl;
2229}
2230
a553e4a6
JHS		 2231
2232#ifdef CONFIG_XFRM
2233/* If there was already an IPSEC SA, we keep it as is, else
2234 * we go look for it ...
2235*/
bd55775c 2236#define DUMMY_MARK 0
fea1ab0f 2237static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2238{
2239 struct xfrm_state *x = pkt_dev->flows[flow].x;
2240 if (!x) {
2241 /*slow path: we dont already have xfrm_state*/
bd55775c 2242 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2243 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2244 (xfrm_address_t *)&pkt_dev->cur_saddr,
2245 AF_INET,
2246 pkt_dev->ipsmode,
2247 pkt_dev->ipsproto, 0);
2248 if (x) {
2249 pkt_dev->flows[flow].x = x;
2250 set_pkt_overhead(pkt_dev);
63adc6fb 2251 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2252 }
2253
2254 }
2255}
2256#endif
fd2ea0a7
DM		 2257static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2258{
e6fce5b9
RO		 2259
2260 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2261 pkt_dev->cur_queue_map = smp_processor_id();
2262
896a7cf8 2263 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2264 __u16 t;
2265 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2266 t = random32() %
2267 (pkt_dev->queue_map_max -
2268 pkt_dev->queue_map_min + 1)
2269 + pkt_dev->queue_map_min;
2270 } else {
2271 t = pkt_dev->cur_queue_map + 1;
2272 if (t > pkt_dev->queue_map_max)
2273 t = pkt_dev->queue_map_min;
2274 }
2275 pkt_dev->cur_queue_map = t;
2276 }
bfdbc0ac 2277 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2278}
2279
1da177e4
LT		 2280/* Increment/randomize headers according to flags and current values
2281 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2282 */
222f1806
LC		 2283static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2284{
2285 __u32 imn;
2286 __u32 imx;
2287 int flow = 0;
1da177e4 2288
007a531b
JHS		 2289 if (pkt_dev->cflows)
2290 flow = f_pick(pkt_dev);
1da177e4
LT		 2291
2292 /* Deal with source MAC */
222f1806
LC		 2293 if (pkt_dev->src_mac_count > 1) {
2294 __u32 mc;
2295 __u32 tmp;
2296
2297 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2298 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2299 else {
2300 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2301 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2302 pkt_dev->src_mac_count)
2303 pkt_dev->cur_src_mac_offset = 0;
2304 }
2305
2306 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2307 pkt_dev->hh[11] = tmp;
2308 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2309 pkt_dev->hh[10] = tmp;
2310 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2311 pkt_dev->hh[9] = tmp;
2312 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2313 pkt_dev->hh[8] = tmp;
2314 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2315 pkt_dev->hh[7] = tmp;
2316 }
2317
2318 /* Deal with Destination MAC */
2319 if (pkt_dev->dst_mac_count > 1) {
2320 __u32 mc;
2321 __u32 tmp;
2322
2323 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2324 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2325
2326 else {
2327 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2328 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2329 pkt_dev->dst_mac_count) {
2330 pkt_dev->cur_dst_mac_offset = 0;
2331 }
2332 }
2333
2334 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2335 pkt_dev->hh[5] = tmp;
2336 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2337 pkt_dev->hh[4] = tmp;
2338 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2339 pkt_dev->hh[3] = tmp;
2340 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2341 pkt_dev->hh[2] = tmp;
2342 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2343 pkt_dev->hh[1] = tmp;
2344 }
2345
ca6549af
SW		 2346 if (pkt_dev->flags & F_MPLS_RND) {
2347 unsigned i;
e71a4783 2348 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2349 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2350 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2351 ((__force __be32)random32() &
ca6549af
SW		 2352 htonl(0x000fffff));
2353 }
2354
34954ddc 2355 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2356 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2357 }
2358
2359 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2360 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2361 }
2362
222f1806
LC		 2363 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2364 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2365 pkt_dev->cur_udp_src = random32() %
2366 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2367 + pkt_dev->udp_src_min;
222f1806
LC		 2368
2369 else {
1da177e4
LT		 2370 pkt_dev->cur_udp_src++;
2371 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2372 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2373 }
2374 }
2375
2376 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2377 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2378 pkt_dev->cur_udp_dst = random32() %
2379 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2380 + pkt_dev->udp_dst_min;
222f1806 2381 } else {
1da177e4 2382 pkt_dev->cur_udp_dst++;
222f1806 2383 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2384 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2385 }
2386 }
1da177e4
LT		 2387
2388 if (!(pkt_dev->flags & F_IPV6)) {
2389
63adc6fb
SH		 2390 imn = ntohl(pkt_dev->saddr_min);
2391 imx = ntohl(pkt_dev->saddr_max);
2392 if (imn < imx) {
1da177e4 2393 __u32 t;
222f1806 2394 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2395 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2396 else {
2397 t = ntohl(pkt_dev->cur_saddr);
2398 t++;
63adc6fb 2399 if (t > imx)
1da177e4 2400 t = imn;
63adc6fb 2401
1da177e4
LT		 2402 }
2403 pkt_dev->cur_saddr = htonl(t);
2404 }
222f1806 2405
007a531b 2406 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2407 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2408 } else {
252e3346
AV		 2409 imn = ntohl(pkt_dev->daddr_min);
2410 imx = ntohl(pkt_dev->daddr_max);
2411 if (imn < imx) {
1da177e4 2412 __u32 t;
252e3346 2413 __be32 s;
1da177e4
LT		 2414 if (pkt_dev->flags & F_IPDST_RND) {
2415
5fa6fc76 2416 t = random32() % (imx - imn) + imn;
252e3346 2417 s = htonl(t);
1da177e4 2418
21cf2253
JP		 2419 while (ipv4_is_loopback(s) ||
2420 ipv4_is_multicast(s) ||
1e637c74 2421 ipv4_is_lbcast(s) ||
21cf2253
JP		 2422 ipv4_is_zeronet(s) ||
2423 ipv4_is_local_multicast(s)) {
5fa6fc76 2424 t = random32() % (imx - imn) + imn;
252e3346 2425 s = htonl(t);
1da177e4 2426 }
252e3346
AV		 2427 pkt_dev->cur_daddr = s;
2428 } else {
1da177e4
LT		 2429 t = ntohl(pkt_dev->cur_daddr);
2430 t++;
2431 if (t > imx) {
2432 t = imn;
2433 }
2434 pkt_dev->cur_daddr = htonl(t);
2435 }
2436 }
222f1806 2437 if (pkt_dev->cflows) {
007a531b 2438 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2439 pkt_dev->flows[flow].cur_daddr =
2440 pkt_dev->cur_daddr;
a553e4a6
JHS		 2441#ifdef CONFIG_XFRM
2442 if (pkt_dev->flags & F_IPSEC_ON)
2443 get_ipsec_sa(pkt_dev, flow);
2444#endif
1da177e4
LT		 2445 pkt_dev->nflows++;
2446 }
2447 }
222f1806
LC		 2448 } else { /* IPV6 * */
2449
2450 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2451 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2452 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2453 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2454 else {
2455 int i;
2456
2457 /* Only random destinations yet */
2458
222f1806 2459 for (i = 0; i < 4; i++) {
1da177e4 2460 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2461 (((__force __be32)random32() |
222f1806
LC		 2462 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2463 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2464 }
222f1806 2465 }
1da177e4
LT		 2466 }
2467
222f1806
LC		 2468 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2469 __u32 t;
2470 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2471 t = random32() %
2472 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2473 + pkt_dev->min_pkt_size;
222f1806 2474 } else {
1da177e4 2475 t = pkt_dev->cur_pkt_size + 1;
222f1806 2476 if (t > pkt_dev->max_pkt_size)
1da177e4 2477 t = pkt_dev->min_pkt_size;
222f1806
LC		 2478 }
2479 pkt_dev->cur_pkt_size = t;
2480 }
1da177e4 2481
fd2ea0a7 2482 set_cur_queue_map(pkt_dev);
45b270f8 2483
1da177e4
LT		 2484 pkt_dev->flows[flow].count++;
2485}
2486
a553e4a6
JHS		 2487
2488#ifdef CONFIG_XFRM
2489static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2490{
2491 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2492 int err = 0;
2493 struct iphdr *iph;
2494
2495 if (!x)
2496 return 0;
2497 /* XXX: we dont support tunnel mode for now until
2498 * we resolve the dst issue */
2499 if (x->props.mode != XFRM_MODE_TRANSPORT)
2500 return 0;
2501
2502 spin_lock(&x->lock);
2503 iph = ip_hdr(skb);
2504
13996378 2505 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2506 if (err)
2507 goto error;
2508 err = x->type->output(x, skb);
2509 if (err)
2510 goto error;
2511
63adc6fb 2512 x->curlft.bytes += skb->len;
a553e4a6 2513 x->curlft.packets++;
a553e4a6
JHS		 2514error:
2515 spin_unlock(&x->lock);
2516 return err;
2517}
2518
475ac1e4 2519static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2520{
2521 if (pkt_dev->cflows) {
2522 /* let go of the SAs if we have them */
d6182223
PG		 2523 int i;
2524 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2525 struct xfrm_state *x = pkt_dev->flows[i].x;
2526 if (x) {
2527 xfrm_state_put(x);
2528 pkt_dev->flows[i].x = NULL;
2529 }
2530 }
2531 }
2532}
2533
475ac1e4 2534static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2535 struct sk_buff *skb, __be16 protocol)
2536{
2537 if (pkt_dev->flags & F_IPSEC_ON) {
2538 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2539 int nhead = 0;
2540 if (x) {
2541 int ret;
2542 __u8 *eth;
2543 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2544 if (nhead > 0) {
a553e4a6
JHS		 2545 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2546 if (ret < 0) {
f9467eae
JP		 2547 pr_err("Error expanding ipsec packet %d\n",
2548 ret);
b4bb4ac8 2549 goto err;
a553e4a6
JHS		 2550 }
2551 }
2552
2553 /* ipsec is not expecting ll header */
2554 skb_pull(skb, ETH_HLEN);
2555 ret = pktgen_output_ipsec(skb, pkt_dev);
2556 if (ret) {
f9467eae 2557 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2558 goto err;
a553e4a6
JHS		 2559 }
2560 /* restore ll */
2561 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2562 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2563 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2564 }
2565 }
2566 return 1;
b4bb4ac8
IJ		 2567err:
2568 kfree_skb(skb);
2569 return 0;
a553e4a6
JHS		 2570}
2571#endif
2572
ca6549af
SW		 2573static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2574{
2575 unsigned i;
63adc6fb 2576 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2577 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2578
ca6549af
SW		 2579 mpls--;
2580 *mpls |= MPLS_STACK_BOTTOM;
2581}
2582
0f37c605
AV		 2583static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2584 unsigned int prio)
2585{
2586 return htons(id | (cfi << 12) | (prio << 13));
2587}
2588
222f1806
LC		 2589static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2590 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2591{
2592 struct sk_buff *skb = NULL;
2593 __u8 *eth;
2594 struct udphdr *udph;
2595 int datalen, iplen;
2596 struct iphdr *iph;
222f1806 2597 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2598 __be16 protocol = htons(ETH_P_IP);
ca6549af 2599 __be32 *mpls;
34954ddc
FF		 2600 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2601 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2602 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2603 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2604 u16 queue_map;
ca6549af
SW		 2605
2606 if (pkt_dev->nr_labels)
d5f1ce9a 2607 protocol = htons(ETH_P_MPLS_UC);
222f1806 2608
34954ddc 2609 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2610 protocol = htons(ETH_P_8021Q);
34954ddc 2611
64053bee
RO		 2612 /* Update any of the values, used when we're incrementing various
2613 * fields.
2614 */
2615 mod_cur_headers(pkt_dev);
eb589063 2616 queue_map = pkt_dev->cur_queue_map;
64053bee 2617
7ac5459e 2618 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2619
2620 if (pkt_dev->flags & F_NODE) {
2621 int node;
2622
2623 if (pkt_dev->node >= 0)
2624 node = pkt_dev->node;
2625 else
2626 node = numa_node_id();
2627
2628 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2629 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2630 if (likely(skb)) {
2631 skb_reserve(skb, NET_SKB_PAD);
2632 skb->dev = odev;
2633 }
2634 }
2635 else
2636 skb = __netdev_alloc_skb(odev,
2637 pkt_dev->cur_pkt_size + 64
2638 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2639
1da177e4
LT		 2640 if (!skb) {
2641 sprintf(pkt_dev->result, "No memory");
2642 return NULL;
2643 }
2644
7ac5459e 2645 skb_reserve(skb, datalen);
1da177e4
LT		 2646
2647 /* Reserve for ethernet and IP header */
2648 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2649 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2650 if (pkt_dev->nr_labels)
2651 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2652
2653 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2654 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2655 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2656 *svlan_tci = build_tci(pkt_dev->svlan_id,
2657 pkt_dev->svlan_cfi,
2658 pkt_dev->svlan_p);
34954ddc 2659 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2660 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2661 }
2662 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2663 *vlan_tci = build_tci(pkt_dev->vlan_id,
2664 pkt_dev->vlan_cfi,
2665 pkt_dev->vlan_p);
34954ddc 2666 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2667 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2668 }
2669
27a884dc 2670 skb->network_header = skb->tail;
b0e380b1 2671 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2672 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2673 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2674 iph = ip_hdr(skb);
2675 udph = udp_hdr(skb);
1da177e4 2676
1da177e4 2677 memcpy(eth, pkt_dev->hh, 12);
252e3346 2678 *(__be16 *) & eth[12] = protocol;
1da177e4 2679
ca6549af
SW		 2680 /* Eth + IPh + UDPh + mpls */
2681 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2682 pkt_dev->pkt_overhead;
222f1806 2683 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2684 datalen = sizeof(struct pktgen_hdr);
222f1806 2685
1da177e4
LT		 2686 udph->source = htons(pkt_dev->cur_udp_src);
2687 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2688 udph->len = htons(datalen + 8); /* DATA + udphdr */
2689 udph->check = 0; /* No checksum */
1da177e4
LT		 2690
2691 iph->ihl = 5;
2692 iph->version = 4;
2693 iph->ttl = 32;
1ca7768c 2694 iph->tos = pkt_dev->tos;
222f1806 2695 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2696 iph->saddr = pkt_dev->cur_saddr;
2697 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2698 iph->id = htons(pkt_dev->ip_id);
2699 pkt_dev->ip_id++;
1da177e4
LT		 2700 iph->frag_off = 0;
2701 iplen = 20 + 8 + datalen;
2702 iph->tot_len = htons(iplen);
2703 iph->check = 0;
222f1806 2704 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2705 skb->protocol = protocol;
b0e380b1 2706 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2707 pkt_dev->pkt_overhead);
1da177e4
LT		 2708 skb->dev = odev;
2709 skb->pkt_type = PACKET_HOST;
2710
66ed1e5e 2711 if (pkt_dev->nfrags <= 0) {
222f1806 2712 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
66ed1e5e
ED		 2713 memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
2714 } else {
1da177e4 2715 int frags = pkt_dev->nfrags;
66ed1e5e 2716 int i, len;
1da177e4 2717
222f1806
LC		 2718 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2719
1da177e4
LT		 2720 if (frags > MAX_SKB_FRAGS)
2721 frags = MAX_SKB_FRAGS;
222f1806 2722 if (datalen > frags * PAGE_SIZE) {
66ed1e5e
ED		 2723 len = datalen - frags * PAGE_SIZE;
2724 memset(skb_put(skb, len), 0, len);
222f1806 2725 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2726 }
2727
2728 i = 0;
2729 while (datalen > 0) {
66ed1e5e 2730 struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
1da177e4
LT		 2731 skb_shinfo(skb)->frags[i].page = page;
2732 skb_shinfo(skb)->frags[i].page_offset = 0;
2733 skb_shinfo(skb)->frags[i].size =
222f1806 2734 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2735 datalen -= skb_shinfo(skb)->frags[i].size;
2736 skb->len += skb_shinfo(skb)->frags[i].size;
2737 skb->data_len += skb_shinfo(skb)->frags[i].size;
2738 i++;
2739 skb_shinfo(skb)->nr_frags = i;
2740 }
2741
2742 while (i < frags) {
2743 int rem;
2744
2745 if (i == 0)
2746 break;
2747
2748 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2749 if (rem == 0)
2750 break;
2751
2752 skb_shinfo(skb)->frags[i - 1].size -= rem;
2753
222f1806
LC		 2754 skb_shinfo(skb)->frags[i] =
2755 skb_shinfo(skb)->frags[i - 1];
1da177e4 2756 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2757 skb_shinfo(skb)->frags[i].page =
2758 skb_shinfo(skb)->frags[i - 1].page;
2759 skb_shinfo(skb)->frags[i].page_offset +=
2760 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2761 skb_shinfo(skb)->frags[i].size = rem;
2762 i++;
2763 skb_shinfo(skb)->nr_frags = i;
2764 }
2765 }
2766
63adc6fb
SH		 2767 /* Stamp the time, and sequence number,
2768 * convert them to network byte order
2769 */
222f1806
LC		 2770 if (pgh) {
2771 struct timeval timestamp;
2772
2773 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2774 pgh->seq_num = htonl(pkt_dev->seq_num);
2775
2776 do_gettimeofday(&timestamp);
2777 pgh->tv_sec = htonl(timestamp.tv_sec);
2778 pgh->tv_usec = htonl(timestamp.tv_usec);
2779 }
1da177e4 2780
a553e4a6
JHS		 2781#ifdef CONFIG_XFRM
2782 if (!process_ipsec(pkt_dev, skb, protocol))
2783 return NULL;
2784#endif
2785
1da177e4
LT		 2786 return skb;
2787}
2788
2789/*
4ec93edb 2790 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2791 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2792 *
4ec93edb 2793 * Slightly modified for kernel.
1da177e4
LT		 2794 * Should be candidate for net/ipv4/utils.c
2795 * --ro
2796 */
2797
222f1806 2798static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2799{
2800 unsigned int i;
222f1806 2801 unsigned int len = 0;
1da177e4
LT		 2802 unsigned long u;
2803 char suffix[16];
222f1806
LC		 2804 unsigned int prefixlen = 0;
2805 unsigned int suffixlen = 0;
252e3346 2806 __be32 tmp;
cfcabdcc 2807 char *pos;
1da177e4 2808
222f1806
LC		 2809 for (i = 0; i < 16; i++)
2810 ip[i] = 0;
1da177e4
LT		 2811
2812 for (;;) {
2813 if (*s == ':') {
2814 len++;
222f1806
LC		 2815 if (s[1] == ':') { /* Found "::", skip to part 2 */
2816 s += 2;
1da177e4
LT		 2817 len++;
2818 break;
2819 }
2820 s++;
2821 }
1da177e4 2822
cfcabdcc
SH		 2823 u = simple_strtoul(s, &pos, 16);
2824 i = pos - s;
222f1806
LC		 2825 if (!i)
2826 return 0;
2827 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2828
2829 /* the last 4 bytes may be written as IPv4 address */
2830
2831 tmp = in_aton(s);
222f1806
LC		 2832 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2833 return i + len;
1da177e4
LT		 2834 }
2835 ip[prefixlen++] = (u >> 8);
2836 ip[prefixlen++] = (u & 255);
222f1806
LC		 2837 s += i;
2838 len += i;
2839 if (prefixlen == 16)
1da177e4
LT		 2840 return len;
2841 }
2842
2843/* part 2, after "::" */
2844 for (;;) {
2845 if (*s == ':') {
222f1806 2846 if (suffixlen == 0)
1da177e4
LT		 2847 break;
2848 s++;
2849 len++;
222f1806 2850 } else if (suffixlen != 0)
1da177e4 2851 break;
cfcabdcc
SH		 2852
2853 u = simple_strtol(s, &pos, 16);
2854 i = pos - s;
1da177e4 2855 if (!i) {
222f1806
LC		 2856 if (*s)
2857 len--;
1da177e4
LT		 2858 break;
2859 }
222f1806 2860 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2861 tmp = in_aton(s);
222f1806
LC		 2862 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2863 sizeof(tmp));
2864 suffixlen += 4;
2865 len += strlen(s);
1da177e4
LT		 2866 break;
2867 }
2868 suffix[suffixlen++] = (u >> 8);
2869 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2870 s += i;
2871 len += i;
2872 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2873 break;
2874 }
222f1806
LC		 2875 for (i = 0; i < suffixlen; i++)
2876 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2877 return len;
2878}
2879
222f1806
LC		 2880static char tohex(char hexdigit)
2881{
2882 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2883}
2884
222f1806
LC		 2885static int fmt_xlong(char *s, unsigned int i)
2886{
2887 char *bak = s;
2888 *s = tohex((i >> 12) & 0xf);
2889 if (s != bak || *s != '0')
2890 ++s;
2891 *s = tohex((i >> 8) & 0xf);
2892 if (s != bak || *s != '0')
2893 ++s;
2894 *s = tohex((i >> 4) & 0xf);
2895 if (s != bak || *s != '0')
2896 ++s;
2897 *s = tohex(i & 0xf);
2898 return s - bak + 1;
1da177e4
LT		 2899}
2900
222f1806
LC		 2901static unsigned int fmt_ip6(char *s, const char ip[16])
2902{
1da177e4
LT		 2903 unsigned int len;
2904 unsigned int i;
2905 unsigned int temp;
2906 unsigned int compressing;
2907 int j;
2908
222f1806
LC		 2909 len = 0;
2910 compressing = 0;
2911 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2912
2913#ifdef V4MAPPEDPREFIX
222f1806
LC		 2914 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2915 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2916 temp = strlen(s);
2917 return len + temp;
1da177e4
LT		 2918 }
2919#endif
222f1806
LC		 2920 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2921 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2922 if (temp == 0) {
2923 if (!compressing) {
222f1806
LC		 2924 compressing = 1;
2925 if (j == 0) {
2926 *s++ = ':';
2927 ++len;
1da177e4
LT		 2928 }
2929 }
2930 } else {
2931 if (compressing) {
222f1806
LC		 2932 compressing = 0;
2933 *s++ = ':';
2934 ++len;
1da177e4 2935 }
222f1806
LC		 2936 i = fmt_xlong(s, temp);
2937 len += i;
2938 s += i;
2939 if (j < 14) {
1da177e4
LT		 2940 *s++ = ':';
2941 ++len;
2942 }
2943 }
2944 }
2945 if (compressing) {
222f1806
LC		 2946 *s++ = ':';
2947 ++len;
1da177e4 2948 }
222f1806 2949 *s = 0;
1da177e4
LT		 2950 return len;
2951}
2952
222f1806
LC		 2953static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2954 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2955{
2956 struct sk_buff *skb = NULL;
2957 __u8 *eth;
2958 struct udphdr *udph;
2959 int datalen;
2960 struct ipv6hdr *iph;
222f1806 2961 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2962 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2963 __be32 *mpls;
34954ddc
FF		 2964 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2965 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2966 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2967 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2968 u16 queue_map;
ca6549af
SW		 2969
2970 if (pkt_dev->nr_labels)
d5f1ce9a 2971 protocol = htons(ETH_P_MPLS_UC);
64053bee 2972
34954ddc 2973 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2974 protocol = htons(ETH_P_8021Q);
34954ddc 2975
64053bee
RO		 2976 /* Update any of the values, used when we're incrementing various
2977 * fields.
2978 */
2979 mod_cur_headers(pkt_dev);
eb589063 2980 queue_map = pkt_dev->cur_queue_map;
64053bee 2981
e470757d
SH		 2982 skb = __netdev_alloc_skb(odev,
2983 pkt_dev->cur_pkt_size + 64
2984 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2985 if (!skb) {
2986 sprintf(pkt_dev->result, "No memory");
2987 return NULL;
2988 }
2989
2990 skb_reserve(skb, 16);
2991
2992 /* Reserve for ethernet and IP header */
2993 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2994 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2995 if (pkt_dev->nr_labels)
2996 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2997
2998 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2999 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 3000 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 3001 *svlan_tci = build_tci(pkt_dev->svlan_id,
3002 pkt_dev->svlan_cfi,
3003 pkt_dev->svlan_p);
34954ddc 3004 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 3005 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 3006 }
3007 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 3008 *vlan_tci = build_tci(pkt_dev->vlan_id,
3009 pkt_dev->vlan_cfi,
3010 pkt_dev->vlan_p);
34954ddc 3011 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 3012 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 3013 }
3014
27a884dc 3015 skb->network_header = skb->tail;
b0e380b1 3016 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 3017 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 3018 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 3019 iph = ipv6_hdr(skb);
3020 udph = udp_hdr(skb);
1da177e4 3021
1da177e4 3022 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 3023 *(__be16 *) &eth[12] = protocol;
64053bee 3024
ca6549af
SW		 3025 /* Eth + IPh + UDPh + mpls */
3026 datalen = pkt_dev->cur_pkt_size - 14 -
3027 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 3028 pkt_dev->pkt_overhead;
1da177e4 3029
222f1806 3030 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 3031 datalen = sizeof(struct pktgen_hdr);
3032 if (net_ratelimit())
f9467eae 3033 pr_info("increased datalen to %d\n", datalen);
1da177e4
LT		 3034 }
3035
3036 udph->source = htons(pkt_dev->cur_udp_src);
3037 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 3038 udph->len = htons(datalen + sizeof(struct udphdr));
3039 udph->check = 0; /* No checksum */
1da177e4 3040
d5f1ce9a 3041 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 3042
1ca7768c
FF		 3043 if (pkt_dev->traffic_class) {
3044 /* Version + traffic class + flow (0) */
252e3346 3045 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 3046 }
3047
1da177e4
LT		 3048 iph->hop_limit = 32;
3049
3050 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
3051 iph->nexthdr = IPPROTO_UDP;
3052
3053 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
3054 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
3055
b0e380b1 3056 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 3057 pkt_dev->pkt_overhead);
ca6549af 3058 skb->protocol = protocol;
1da177e4
LT		 3059 skb->dev = odev;
3060 skb->pkt_type = PACKET_HOST;
3061
222f1806
LC		 3062 if (pkt_dev->nfrags <= 0)
3063 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 3064 else {
3065 int frags = pkt_dev->nfrags;
3066 int i;
3067
222f1806
LC		 3068 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
3069
1da177e4
LT		 3070 if (frags > MAX_SKB_FRAGS)
3071 frags = MAX_SKB_FRAGS;
222f1806
LC		 3072 if (datalen > frags * PAGE_SIZE) {
3073 skb_put(skb, datalen - frags * PAGE_SIZE);
3074 datalen = frags * PAGE_SIZE;
1da177e4
LT		 3075 }
3076
3077 i = 0;
3078 while (datalen > 0) {
3079 struct page *page = alloc_pages(GFP_KERNEL, 0);
3080 skb_shinfo(skb)->frags[i].page = page;
3081 skb_shinfo(skb)->frags[i].page_offset = 0;
3082 skb_shinfo(skb)->frags[i].size =
222f1806 3083 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 3084 datalen -= skb_shinfo(skb)->frags[i].size;
3085 skb->len += skb_shinfo(skb)->frags[i].size;
3086 skb->data_len += skb_shinfo(skb)->frags[i].size;
3087 i++;
3088 skb_shinfo(skb)->nr_frags = i;
3089 }
3090
3091 while (i < frags) {
3092 int rem;
3093
3094 if (i == 0)
3095 break;
3096
3097 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3098 if (rem == 0)
3099 break;
3100
3101 skb_shinfo(skb)->frags[i - 1].size -= rem;
3102
222f1806
LC		 3103 skb_shinfo(skb)->frags[i] =
3104 skb_shinfo(skb)->frags[i - 1];
1da177e4 3105 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3106 skb_shinfo(skb)->frags[i].page =
3107 skb_shinfo(skb)->frags[i - 1].page;
3108 skb_shinfo(skb)->frags[i].page_offset +=
3109 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3110 skb_shinfo(skb)->frags[i].size = rem;
3111 i++;
3112 skb_shinfo(skb)->nr_frags = i;
3113 }
3114 }
3115
63adc6fb
SH		 3116 /* Stamp the time, and sequence number,
3117 * convert them to network byte order
3118 * should we update cloned packets too ?
3119 */
222f1806
LC		 3120 if (pgh) {
3121 struct timeval timestamp;
3122
3123 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3124 pgh->seq_num = htonl(pkt_dev->seq_num);
3125
3126 do_gettimeofday(&timestamp);
3127 pgh->tv_sec = htonl(timestamp.tv_sec);
3128 pgh->tv_usec = htonl(timestamp.tv_usec);
3129 }
34954ddc 3130 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3131
1da177e4
LT		 3132 return skb;
3133}
3134
475ac1e4
SH		 3135static struct sk_buff *fill_packet(struct net_device *odev,
3136 struct pktgen_dev *pkt_dev)
1da177e4 3137{
222f1806 3138 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3139 return fill_packet_ipv6(odev, pkt_dev);
3140 else
3141 return fill_packet_ipv4(odev, pkt_dev);
3142}
3143
222f1806 3144static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3145{
222f1806
LC		 3146 pkt_dev->seq_num = 1;
3147 pkt_dev->idle_acc = 0;
1da177e4 3148 pkt_dev->sofar = 0;
222f1806
LC		 3149 pkt_dev->tx_bytes = 0;
3150 pkt_dev->errors = 0;
1da177e4
LT		 3151}
3152
3153/* Set up structure for sending pkts, clear counters */
3154
3155static void pktgen_run(struct pktgen_thread *t)
3156{
c26a8016 3157 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3158 int started = 0;
3159
f9467eae 3160 func_enter();
1da177e4
LT		 3161
3162 if_lock(t);
c26a8016 3163 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3164
3165 /*
3166 * setup odev and create initial packet.
3167 */
3168 pktgen_setup_inject(pkt_dev);
3169
222f1806 3170 if (pkt_dev->odev) {
1da177e4 3171 pktgen_clear_counters(pkt_dev);
222f1806 3172 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3173 pkt_dev->skb = NULL;
fd29cf72
SH		 3174 pkt_dev->started_at =
3175 pkt_dev->next_tx = ktime_now();
3176
16dab72f 3177 set_pkt_overhead(pkt_dev);
222f1806 3178
1da177e4
LT		 3179 strcpy(pkt_dev->result, "Starting");
3180 started++;
222f1806 3181 } else
1da177e4
LT		 3182 strcpy(pkt_dev->result, "Error starting");
3183 }
3184 if_unlock(t);
222f1806
LC		 3185 if (started)
3186 t->control &= ~(T_STOP);
1da177e4
LT		 3187}
3188
3189static void pktgen_stop_all_threads_ifs(void)
3190{
cdcdbe0b 3191 struct pktgen_thread *t;
1da177e4 3192
f9467eae 3193 func_enter();
1da177e4 3194
6146e6a4 3195 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3196
3197 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3198 t->control |= T_STOP;
cdcdbe0b 3199
6146e6a4 3200 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3201}
3202
648fda74 3203static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3204{
648fda74 3205 const struct pktgen_dev *pkt_dev;
1da177e4 3206
c26a8016 3207 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3208 if (pkt_dev->running)
3209 return 1;
3210 return 0;
1da177e4
LT		 3211}
3212
222f1806 3213static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3214{
222f1806 3215 if_lock(t);
1da177e4 3216
222f1806 3217 while (thread_is_running(t)) {
1da177e4 3218
222f1806 3219 if_unlock(t);
1da177e4 3220
222f1806 3221 msleep_interruptible(100);
1da177e4 3222
222f1806
LC		 3223 if (signal_pending(current))
3224 goto signal;
3225 if_lock(t);
3226 }
3227 if_unlock(t);
3228 return 1;
3229signal:
3230 return 0;
1da177e4
LT		 3231}
3232
3233static int pktgen_wait_all_threads_run(void)
3234{
cdcdbe0b 3235 struct pktgen_thread *t;
1da177e4 3236 int sig = 1;
222f1806 3237
6146e6a4 3238 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3239
3240 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3241 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3242 if (sig == 0)
3243 break;
1da177e4 3244 }
cdcdbe0b
LC		 3245
3246 if (sig == 0)
3247 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3248 t->control |= (T_STOP);
cdcdbe0b 3249
6146e6a4 3250 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3251 return sig;
3252}
3253
3254static void pktgen_run_all_threads(void)
3255{
cdcdbe0b 3256 struct pktgen_thread *t;
1da177e4 3257
f9467eae 3258 func_enter();
1da177e4 3259
6146e6a4 3260 mutex_lock(&pktgen_thread_lock);
1da177e4 3261
cdcdbe0b 3262 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3263 t->control |= (T_RUN);
cdcdbe0b 3264
6146e6a4 3265 mutex_unlock(&pktgen_thread_lock);
1da177e4 3266
63adc6fb
SH		 3267 /* Propagate thread->control */
3268 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3269
1da177e4
LT		 3270 pktgen_wait_all_threads_run();
3271}
3272
eb37b41c
JB		 3273static void pktgen_reset_all_threads(void)
3274{
3275 struct pktgen_thread *t;
3276
f9467eae 3277 func_enter();
eb37b41c
JB		 3278
3279 mutex_lock(&pktgen_thread_lock);
3280
3281 list_for_each_entry(t, &pktgen_threads, th_list)
3282 t->control |= (T_REMDEVALL);
3283
3284 mutex_unlock(&pktgen_thread_lock);
3285
63adc6fb
SH		 3286 /* Propagate thread->control */
3287 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3288
3289 pktgen_wait_all_threads_run();
3290}
3291
1da177e4
LT		 3292static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3293{
fd29cf72 3294 __u64 bps, mbps, pps;
222f1806 3295 char *p = pkt_dev->result;
fd29cf72
SH		 3296 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3297 pkt_dev->started_at);
3298 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3299
3300 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3301 (unsigned long long)ktime_to_us(elapsed),
3302 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3303 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3304 (unsigned long long)pkt_dev->sofar,
3305 pkt_dev->cur_pkt_size, nr_frags);
3306
fd29cf72
SH		 3307 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3308 ktime_to_ns(elapsed));
222f1806
LC		 3309
3310 bps = pps * 8 * pkt_dev->cur_pkt_size;
3311
3312 mbps = bps;
3313 do_div(mbps, 1000000);
3314 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3315 (unsigned long long)pps,
3316 (unsigned long long)mbps,
3317 (unsigned long long)bps,
3318 (unsigned long long)pkt_dev->errors);
1da177e4 3319}
1da177e4
LT		 3320
3321/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3322static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3323{
222f1806 3324 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3325
222f1806 3326 if (!pkt_dev->running) {
f9467eae
JP		 3327 pr_warning("interface: %s is already stopped\n",
3328 pkt_dev->odevname);
222f1806
LC		 3329 return -EINVAL;
3330 }
1da177e4 3331
3bda06a3
SH		 3332 kfree_skb(pkt_dev->skb);
3333 pkt_dev->skb = NULL;
fd29cf72 3334 pkt_dev->stopped_at = ktime_now();
222f1806 3335 pkt_dev->running = 0;
1da177e4 3336
95ed63f7 3337 show_results(pkt_dev, nr_frags);
1da177e4 3338
222f1806 3339 return 0;
1da177e4
LT		 3340}
3341
222f1806 3342static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3343{
c26a8016 3344 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3345
1da177e4
LT		 3346 if_lock(t);
3347
c26a8016
LC		 3348 list_for_each_entry(pkt_dev, &t->if_list, list) {
3349 if (!pkt_dev->running)
222f1806
LC		 3350 continue;
3351 if (best == NULL)
c26a8016 3352 best = pkt_dev;
fd29cf72 3353 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3354 best = pkt_dev;
1da177e4
LT		 3355 }
3356 if_unlock(t);
222f1806 3357 return best;
1da177e4
LT		 3358}
3359
222f1806
LC		 3360static void pktgen_stop(struct pktgen_thread *t)
3361{
c26a8016 3362 struct pktgen_dev *pkt_dev;
1da177e4 3363
f9467eae 3364 func_enter();
1da177e4 3365
222f1806 3366 if_lock(t);
1da177e4 3367
c26a8016
LC		 3368 list_for_each_entry(pkt_dev, &t->if_list, list) {
3369 pktgen_stop_device(pkt_dev);
95ed63f7 3370 }
1da177e4 3371
222f1806 3372 if_unlock(t);
1da177e4
LT		 3373}
3374
95ed63f7
AK		 3375/*
3376 * one of our devices needs to be removed - find it
3377 * and remove it
3378 */
3379static void pktgen_rem_one_if(struct pktgen_thread *t)
3380{
c26a8016
LC		 3381 struct list_head *q, *n;
3382 struct pktgen_dev *cur;
95ed63f7 3383
f9467eae 3384 func_enter();
95ed63f7
AK		 3385
3386 if_lock(t);
3387
c26a8016
LC		 3388 list_for_each_safe(q, n, &t->if_list) {
3389 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3390
222f1806
LC		 3391 if (!cur->removal_mark)
3392 continue;
95ed63f7 3393
86dc1ad2 3394 kfree_skb(cur->skb);
95ed63f7
AK		 3395 cur->skb = NULL;
3396
3397 pktgen_remove_device(t, cur);
3398
3399 break;
3400 }
3401
3402 if_unlock(t);
3403}
3404
222f1806 3405static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3406{
c26a8016
LC		 3407 struct list_head *q, *n;
3408 struct pktgen_dev *cur;
222f1806 3409
f9467eae
JP		 3410 func_enter();
3411
222f1806 3412 /* Remove all devices, free mem */
95ed63f7 3413
222f1806 3414 if_lock(t);
1da177e4 3415
c26a8016
LC		 3416 list_for_each_safe(q, n, &t->if_list) {
3417 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3418
86dc1ad2 3419 kfree_skb(cur->skb);
95ed63f7
AK		 3420 cur->skb = NULL;
3421
1da177e4
LT		 3422 pktgen_remove_device(t, cur);
3423 }
3424
222f1806 3425 if_unlock(t);
1da177e4
LT		 3426}
3427
222f1806 3428static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3429{
222f1806 3430 /* Remove from the thread list */
1da177e4 3431
ee74baa7 3432 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3433
6146e6a4 3434 mutex_lock(&pktgen_thread_lock);
1da177e4 3435
cdcdbe0b
LC		 3436 list_del(&t->th_list);
3437
6146e6a4 3438 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3439}
3440
ef87979c 3441static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3442{
fd29cf72 3443 ktime_t idle_start = ktime_now();
ef87979c
SH		 3444 schedule();
3445 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3446}
3791decb 3447
ef87979c
SH		 3448static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3449{
3450 ktime_t idle_start = ktime_now();
3791decb 3451
ef87979c
SH		 3452 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3453 if (signal_pending(current))
3454 break;
3455
3456 if (need_resched())
3457 pktgen_resched(pkt_dev);
3458 else
3459 cpu_relax();
3460 }
fd29cf72 3461 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3462}
3463
475ac1e4 3464static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3465{
00829823 3466 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3467 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3468 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3469 struct netdev_queue *txq;
fd2ea0a7 3470 u16 queue_map;
1da177e4
LT		 3471 int ret;
3472
ef87979c
SH		 3473 /* If device is offline, then don't send */
3474 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3475 pktgen_stop_device(pkt_dev);
3476 return;
fd2ea0a7
DM		 3477 }
3478
ef87979c
SH		 3479 /* This is max DELAY, this has special meaning of
3480 * "never transmit"
3481 */
3482 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3483 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3484 return;
1da177e4 3485 }
222f1806 3486
ef87979c 3487 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3488 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3489 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3490 /* build a new pkt */
3491 kfree_skb(pkt_dev->skb);
3492
3493 pkt_dev->skb = fill_packet(odev, pkt_dev);
3494 if (pkt_dev->skb == NULL) {
f9467eae 3495 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3496 schedule();
3497 pkt_dev->clone_count--; /* back out increment, OOM */
3498 return;
1da177e4 3499 }
baac8564 3500 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3501 pkt_dev->allocated_skbs++;
3502 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3503 }
95ed63f7 3504
ef87979c
SH		 3505 if (pkt_dev->delay && pkt_dev->last_ok)
3506 spin(pkt_dev, pkt_dev->next_tx);
3507
fd2ea0a7
DM		 3508 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3509 txq = netdev_get_tx_queue(odev, queue_map);
3510
3511 __netif_tx_lock_bh(txq);
5b8db2f5 3512
0835acfe 3513 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
ef87979c 3514 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3515 pkt_dev->last_ok = 0;
3516 goto unlock;
3517 }
3518 atomic_inc(&(pkt_dev->skb->users));
3519 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3520
3521 switch (ret) {
3522 case NETDEV_TX_OK:
3523 txq_trans_update(txq);
3524 pkt_dev->last_ok = 1;
3525 pkt_dev->sofar++;
3526 pkt_dev->seq_num++;
baac8564 3527 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3528 break;
f466dba1
JF		 3529 case NET_XMIT_DROP:
3530 case NET_XMIT_CN:
3531 case NET_XMIT_POLICED:
3532 /* skb has been consumed */
3533 pkt_dev->errors++;
3534 break;
ef87979c
SH		 3535 default: /* Drivers are not supposed to return other values! */
3536 if (net_ratelimit())
3537 pr_info("pktgen: %s xmit error: %d\n",
593f63b0 3538 pkt_dev->odevname, ret);
ef87979c
SH		 3539 pkt_dev->errors++;
3540 /* fallthru */
3541 case NETDEV_TX_LOCKED:
3542 case NETDEV_TX_BUSY:
3543 /* Retry it next time */
3544 atomic_dec(&(pkt_dev->skb->users));
3545 pkt_dev->last_ok = 0;
222f1806 3546 }
0835acfe 3547unlock:
fd2ea0a7 3548 __netif_tx_unlock_bh(txq);
222f1806 3549
1da177e4
LT		 3550 /* If pkt_dev->count is zero, then run forever */
3551 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3552 pktgen_wait_for_skb(pkt_dev);
222f1806 3553
1da177e4
LT		 3554 /* Done with this */
3555 pktgen_stop_device(pkt_dev);
222f1806 3556 }
222f1806 3557}
1da177e4 3558
4ec93edb 3559/*
1da177e4
LT		 3560 * Main loop of the thread goes here
3561 */
3562
ee74baa7 3563static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3564{
3565 DEFINE_WAIT(wait);
ee74baa7 3566 struct pktgen_thread *t = arg;
222f1806 3567 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3568 int cpu = t->cpu;
1da177e4 3569
ee74baa7 3570 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3571
3572 init_waitqueue_head(&t->queue);
d3ede327 3573 complete(&t->start_done);
1da177e4 3574
f9467eae 3575 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3576
ee74baa7 3577 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3578
83144186
RW		 3579 set_freezable();
3580
ee74baa7
DM		 3581 while (!kthread_should_stop()) {
3582 pkt_dev = next_to_run(t);
1da177e4 3583
ef87979c
SH		 3584 if (unlikely(!pkt_dev && t->control == 0)) {
3585 wait_event_interruptible_timeout(t->queue,
3586 t->control != 0,
3587 HZ/10);
1b3f720b 3588 try_to_freeze();
ef87979c 3589 continue;
ee74baa7 3590 }
1da177e4 3591
ee74baa7 3592 __set_current_state(TASK_RUNNING);
222f1806 3593
ef87979c 3594 if (likely(pkt_dev)) {
1da177e4
LT		 3595 pktgen_xmit(pkt_dev);
3596
ef87979c
SH		 3597 if (need_resched())
3598 pktgen_resched(pkt_dev);
3599 else
3600 cpu_relax();
3601 }
3602
222f1806 3603 if (t->control & T_STOP) {
1da177e4
LT		 3604 pktgen_stop(t);
3605 t->control &= ~(T_STOP);
3606 }
3607
222f1806 3608 if (t->control & T_RUN) {
1da177e4
LT		 3609 pktgen_run(t);
3610 t->control &= ~(T_RUN);
3611 }
3612
222f1806 3613 if (t->control & T_REMDEVALL) {
1da177e4 3614 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3615 t->control &= ~(T_REMDEVALL);
3616 }
3617
222f1806 3618 if (t->control & T_REMDEV) {
95ed63f7 3619 pktgen_rem_one_if(t);
1da177e4
LT		 3620 t->control &= ~(T_REMDEV);
3621 }
3622
09fe3ef4
AM		 3623 try_to_freeze();
3624
ee74baa7 3625 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3626 }
1da177e4 3627
f9467eae 3628 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3629 pktgen_stop(t);
1da177e4 3630
f9467eae 3631 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3632 pktgen_rem_all_ifs(t);
1da177e4 3633
f9467eae 3634 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3635 pktgen_rem_thread(t);
cdcdbe0b 3636
ee74baa7 3637 return 0;
1da177e4
LT		 3638}
3639
222f1806 3640static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3641 const char *ifname, bool exact)
1da177e4 3642{
c26a8016 3643 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3644 size_t len = strlen(ifname);
222f1806 3645
3e984840 3646 if_lock(t);
c26a8016 3647 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3648 if (strncmp(p->odevname, ifname, len) == 0) {
3649 if (p->odevname[len]) {
3650 if (exact || p->odevname[len] != '@')
3651 continue;
3652 }
c26a8016 3653 pkt_dev = p;
222f1806
LC		 3654 break;
3655 }
222f1806
LC		 3656
3657 if_unlock(t);
f9467eae 3658 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3659 return pkt_dev;
1da177e4
LT		 3660}
3661
4ec93edb
YH		 3662/*
3663 * Adds a dev at front of if_list.
1da177e4
LT		 3664 */
3665
222f1806
LC		 3666static int add_dev_to_thread(struct pktgen_thread *t,
3667 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3668{
3669 int rv = 0;
222f1806
LC		 3670
3671 if_lock(t);
3672
3673 if (pkt_dev->pg_thread) {
f9467eae 3674 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3675 rv = -EBUSY;
3676 goto out;
3677 }
c26a8016
LC		 3678
3679 list_add(&pkt_dev->list, &t->if_list);
222f1806 3680 pkt_dev->pg_thread = t;
1da177e4
LT		 3681 pkt_dev->running = 0;
3682
222f1806
LC		 3683out:
3684 if_unlock(t);
3685 return rv;
1da177e4
LT		 3686}
3687
3688/* Called under thread lock */
3689
222f1806 3690static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3691{
222f1806 3692 struct pktgen_dev *pkt_dev;
39df232f 3693 int err;
3291b9db 3694 int node = cpu_to_node(t->cpu);
222f1806 3695
1da177e4
LT		 3696 /* We don't allow a device to be on several threads */
3697
d50a6b56
SH		 3698 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3699 if (pkt_dev) {
f9467eae 3700 pr_err("ERROR: interface already used\n");
222f1806
LC		 3701 return -EBUSY;
3702 }
d50a6b56 3703
3291b9db 3704 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3705 if (!pkt_dev)
3706 return -ENOMEM;
3707
593f63b0 3708 strcpy(pkt_dev->odevname, ifname);
3291b9db
ED		 3709 pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3710 node);
d50a6b56
SH		 3711 if (pkt_dev->flows == NULL) {
3712 kfree(pkt_dev);
3713 return -ENOMEM;
3714 }
222f1806 3715 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3716
95ed63f7 3717 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3718 pkt_dev->min_pkt_size = ETH_ZLEN;
3719 pkt_dev->max_pkt_size = ETH_ZLEN;
3720 pkt_dev->nfrags = 0;
3721 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3722 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3723 pkt_dev->count = pg_count_d;
3724 pkt_dev->sofar = 0;
222f1806 3725 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3726 pkt_dev->udp_src_max = 9;
3727 pkt_dev->udp_dst_min = 9;
3728 pkt_dev->udp_dst_max = 9;
3729
34954ddc
FF		 3730 pkt_dev->vlan_p = 0;
3731 pkt_dev->vlan_cfi = 0;
3732 pkt_dev->vlan_id = 0xffff;
3733 pkt_dev->svlan_p = 0;
3734 pkt_dev->svlan_cfi = 0;
3735 pkt_dev->svlan_id = 0xffff;
e99b99b4 3736 pkt_dev->node = -1;
34954ddc 3737
39df232f
SH		 3738 err = pktgen_setup_dev(pkt_dev, ifname);
3739 if (err)
3740 goto out1;
d50a6b56 3741
5efdccbc
DL		 3742 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3743 &pktgen_if_fops, pkt_dev);
39df232f 3744 if (!pkt_dev->entry) {
f9467eae 3745 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3746 PG_PROC_DIR, ifname);
39df232f
SH		 3747 err = -EINVAL;
3748 goto out2;
d50a6b56 3749 }
a553e4a6
JHS		 3750#ifdef CONFIG_XFRM
3751 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3752 pkt_dev->ipsproto = IPPROTO_ESP;
3753#endif
d50a6b56
SH		 3754
3755 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3756out2:
3757 dev_put(pkt_dev->odev);
3758out1:
a553e4a6
JHS		 3759#ifdef CONFIG_XFRM
3760 free_SAs(pkt_dev);
3761#endif
1d0ebfe7 3762 vfree(pkt_dev->flows);
39df232f
SH		 3763 kfree(pkt_dev);
3764 return err;
1da177e4
LT		 3765}
3766
ee74baa7 3767static int __init pktgen_create_thread(int cpu)
1da177e4 3768{
cdcdbe0b 3769 struct pktgen_thread *t;
d50a6b56 3770 struct proc_dir_entry *pe;
ee74baa7 3771 struct task_struct *p;
222f1806 3772
3291b9db
ED		 3773 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3774 cpu_to_node(cpu));
222f1806 3775 if (!t) {
f9467eae 3776 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3777 return -ENOMEM;
3778 }
3779
222f1806 3780 spin_lock_init(&t->if_lock);
1da177e4 3781 t->cpu = cpu;
222f1806 3782
ee74baa7
DM		 3783 INIT_LIST_HEAD(&t->if_list);
3784
3785 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3786 init_completion(&t->start_done);
ee74baa7
DM		 3787
3788 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3789 if (IS_ERR(p)) {
f9467eae 3790 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3791 list_del(&t->th_list);
3792 kfree(t);
3793 return PTR_ERR(p);
3794 }
3795 kthread_bind(p, cpu);
3796 t->tsk = p;
3797
5efdccbc
DL		 3798 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3799 &pktgen_thread_fops, t);
222f1806 3800 if (!pe) {
f9467eae 3801 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3802 PG_PROC_DIR, t->tsk->comm);
3803 kthread_stop(p);
3804 list_del(&t->th_list);
222f1806
LC		 3805 kfree(t);
3806 return -EINVAL;
3807 }
d50a6b56 3808
ee74baa7 3809 wake_up_process(p);
d3ede327 3810 wait_for_completion(&t->start_done);
1da177e4
LT		 3811
3812 return 0;
3813}
3814
4ec93edb
YH		 3815/*
3816 * Removes a device from the thread if_list.
1da177e4 3817 */
222f1806
LC		 3818static void _rem_dev_from_if_list(struct pktgen_thread *t,
3819 struct pktgen_dev *pkt_dev)
1da177e4 3820{
c26a8016
LC		 3821 struct list_head *q, *n;
3822 struct pktgen_dev *p;
1da177e4 3823
c26a8016
LC		 3824 list_for_each_safe(q, n, &t->if_list) {
3825 p = list_entry(q, struct pktgen_dev, list);
3826 if (p == pkt_dev)
3827 list_del(&p->list);
1da177e4
LT		 3828 }
3829}
3830
222f1806
LC		 3831static int pktgen_remove_device(struct pktgen_thread *t,
3832 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3833{
3834
f9467eae 3835 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3836
222f1806 3837 if (pkt_dev->running) {
f9467eae 3838 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3839 pktgen_stop_device(pkt_dev);
3840 }
3841
3842 /* Dis-associate from the interface */
1da177e4
LT		 3843
3844 if (pkt_dev->odev) {
3845 dev_put(pkt_dev->odev);
222f1806
LC		 3846 pkt_dev->odev = NULL;
3847 }
3848
1da177e4
LT		 3849 /* And update the thread if_list */
3850
3851 _rem_dev_from_if_list(t, pkt_dev);
3852
39df232f
SH		 3853 if (pkt_dev->entry)
3854 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3855
a553e4a6
JHS		 3856#ifdef CONFIG_XFRM
3857 free_SAs(pkt_dev);
3858#endif
1d0ebfe7 3859 vfree(pkt_dev->flows);
1da177e4 3860 kfree(pkt_dev);
222f1806 3861 return 0;
1da177e4
LT		 3862}
3863
222f1806 3864static int __init pg_init(void)
1da177e4
LT		 3865{
3866 int cpu;
d50a6b56 3867 struct proc_dir_entry *pe;
1da177e4 3868
f9467eae 3869 pr_info("%s", version);
1da177e4 3870
457c4cbc 3871 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3872 if (!pg_proc_dir)
3873 return -ENODEV;
1da177e4 3874
25296d59 3875 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3876 if (pe == NULL) {
f9467eae 3877 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
457c4cbc 3878 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3879 return -EINVAL;
3880 }
1da177e4 3881
1da177e4
LT		 3882 /* Register us to receive netdevice events */
3883 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3884
670c02c2 3885 for_each_online_cpu(cpu) {
8024bb24 3886 int err;
1da177e4 3887
ee74baa7 3888 err = pktgen_create_thread(cpu);
8024bb24 3889 if (err)
f9467eae
JP		 3890 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3891 cpu, err);
222f1806 3892 }
8024bb24
LC		 3893
3894 if (list_empty(&pktgen_threads)) {
f9467eae 3895 pr_err("ERROR: Initialization failed for all threads\n");
8024bb24
LC		 3896 unregister_netdevice_notifier(&pktgen_notifier_block);
3897 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3898 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3899 return -ENODEV;
3900 }
3901
222f1806 3902 return 0;
1da177e4
LT		 3903}
3904
3905static void __exit pg_cleanup(void)
3906{
cdcdbe0b
LC		 3907 struct pktgen_thread *t;
3908 struct list_head *q, *n;
1da177e4 3909
222f1806 3910 /* Stop all interfaces & threads */
1da177e4 3911
cdcdbe0b
LC		 3912 list_for_each_safe(q, n, &pktgen_threads) {
3913 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3914 kthread_stop(t->tsk);
3915 kfree(t);
222f1806 3916 }
1da177e4 3917
222f1806 3918 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3919 unregister_netdevice_notifier(&pktgen_notifier_block);
3920
222f1806 3921 /* Clean up proc file system */
d50a6b56 3922 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3923 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3924}
3925
1da177e4
LT		 3926module_init(pg_init);
3927module_exit(pg_cleanup);
3928
c3d2f52d 3929MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3930MODULE_DESCRIPTION("Packet Generator tool");
3931MODULE_LICENSE("GPL");
c3d2f52d 3932MODULE_VERSION(VERSION);
1da177e4 3933module_param(pg_count_d, int, 0);
c3d2f52d 3934MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3935module_param(pg_delay_d, int, 0);
c3d2f52d 3936MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3937module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3938MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3939module_param(debug, int, 0);
c3d2f52d 3940MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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