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[linux.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <[email protected]>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <[email protected]>
8 * Ben Greear <[email protected]>
96de0e25 9 * Jens Låås <[email protected]>
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 * [email protected]
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. [email protected]
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 <[email protected]>
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 <[email protected]>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel ([email protected])
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 <[email protected]>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <[email protected]> 040419
94 * ia64 compilation fix from Aron Griffis <[email protected]> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <[email protected]> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <[email protected]>
102 * New time handling. Lennert Buytenhek <[email protected]> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh ([email protected])
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <[email protected]>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <[email protected]>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <[email protected]>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <[email protected]>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
268bb0ce 159#include <linux/prefetch.h>
457c4cbc 160#include <net/net_namespace.h>
1da177e4
LT		 161#include <net/checksum.h>
162#include <net/ipv6.h>
163#include <net/addrconf.h>
a553e4a6
JHS		 164#ifdef CONFIG_XFRM
165#include <net/xfrm.h>
166#endif
4e58a027 167#include <net/netns/generic.h>
1da177e4
LT		 168#include <asm/byteorder.h>
169#include <linux/rcupdate.h>
1977f032 170#include <linux/bitops.h>
63adc6fb
SH		 171#include <linux/io.h>
172#include <linux/timex.h>
173#include <linux/uaccess.h>
1da177e4 174#include <asm/dma.h>
222f1806 175#include <asm/div64.h> /* do_div */
1da177e4 176
43d28b65 177#define VERSION "2.74"
1da177e4 178#define IP_NAME_SZ 32
ca6549af 179#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 180#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 181
f9467eae
JP		 182#define func_enter() pr_debug("entering %s\n", __func__);
183
1da177e4 184/* Device flag bits */
222f1806
LC		 185#define F_IPSRC_RND (1<<0) /* IP-Src Random */
186#define F_IPDST_RND (1<<1) /* IP-Dst Random */
187#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
188#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
189#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
190#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
191#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
192#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 193#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 194#define F_VID_RND (1<<9) /* Random VLAN ID */
195#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 196#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 197#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 198#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 199#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 200#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 201
202/* Thread control flag bits */
6b80d6a6
SH		 203#define T_STOP (1<<0) /* Stop run */
204#define T_RUN (1<<1) /* Start run */
205#define T_REMDEVALL (1<<2) /* Remove all devs */
206#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 207
1da177e4
LT		 208/* If lock -- can be removed after some work */
209#define if_lock(t) spin_lock(&(t->if_lock));
210#define if_unlock(t) spin_unlock(&(t->if_lock));
211
212/* Used to help with determining the pkts on receive */
213#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 214#define PG_PROC_DIR "pktgen"
215#define PGCTRL "pgctrl"
1da177e4
LT		 216
217#define MAX_CFLOWS 65536
218
34954ddc
FF		 219#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
220#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
221
222f1806 222struct flow_state {
252e3346 223 __be32 cur_daddr;
222f1806 224 int count;
a553e4a6
JHS		 225#ifdef CONFIG_XFRM
226 struct xfrm_state *x;
227#endif
007a531b 228 __u32 flags;
1da177e4
LT		 229};
230
007a531b
JHS		 231/* flow flag bits */
232#define F_INIT (1<<0) /* flow has been initialized */
233
1da177e4 234struct pktgen_dev {
1da177e4
LT		 235 /*
236 * Try to keep frequent/infrequent used vars. separated.
237 */
39df232f
SH		 238 struct proc_dir_entry *entry; /* proc file */
239 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 240 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 241
63adc6fb 242 int running; /* if false, the test will stop */
1da177e4 243
222f1806
LC		 244 /* If min != max, then we will either do a linear iteration, or
245 * we will do a random selection from within the range.
246 */
247 __u32 flags;
95ed63f7
AK		 248 int removal_mark; /* non-zero => the device is marked for
249 * removal by worker thread */
1da177e4 250
68bf9f0b
AW		 251 int min_pkt_size;
252 int max_pkt_size;
16dab72f 253 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 254 int nfrags;
26ad7879 255 struct page *page;
fd29cf72
SH		 256 u64 delay; /* nano-seconds */
257
222f1806
LC		 258 __u64 count; /* Default No packets to send */
259 __u64 sofar; /* How many pkts we've sent so far */
260 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 261 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 262
263 /* runtime counters relating to clone_skb */
222f1806
LC		 264
265 __u64 allocated_skbs;
266 __u32 clone_count;
267 int last_ok; /* Was last skb sent?
63adc6fb
SH		 268 * Or a failed transmit of some sort?
269 * This will keep sequence numbers in order
222f1806 270 */
fd29cf72
SH		 271 ktime_t next_tx;
272 ktime_t started_at;
273 ktime_t stopped_at;
274 u64 idle_acc; /* nano-seconds */
275
222f1806
LC		 276 __u32 seq_num;
277
63adc6fb
SH		 278 int clone_skb; /*
279 * Use multiple SKBs during packet gen.
280 * If this number is greater than 1, then
281 * that many copies of the same packet will be
282 * sent before a new packet is allocated.
283 * If you want to send 1024 identical packets
284 * before creating a new packet,
285 * set clone_skb to 1024.
222f1806
LC		 286 */
287
288 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
291 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292
293 struct in6_addr in6_saddr;
294 struct in6_addr in6_daddr;
295 struct in6_addr cur_in6_daddr;
296 struct in6_addr cur_in6_saddr;
1da177e4 297 /* For ranges */
222f1806
LC		 298 struct in6_addr min_in6_daddr;
299 struct in6_addr max_in6_daddr;
300 struct in6_addr min_in6_saddr;
301 struct in6_addr max_in6_saddr;
302
303 /* If we're doing ranges, random or incremental, then this
304 * defines the min/max for those ranges.
305 */
252e3346
AV		 306 __be32 saddr_min; /* inclusive, source IP address */
307 __be32 saddr_max; /* exclusive, source IP address */
308 __be32 daddr_min; /* inclusive, dest IP address */
309 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 310
311 __u16 udp_src_min; /* inclusive, source UDP port */
312 __u16 udp_src_max; /* exclusive, source UDP port */
313 __u16 udp_dst_min; /* inclusive, dest UDP port */
314 __u16 udp_dst_max; /* exclusive, dest UDP port */
315
1ca7768c 316 /* DSCP + ECN */
63adc6fb
SH		 317 __u8 tos; /* six MSB of (former) IPv4 TOS
318 are for dscp codepoint */
319 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
320 (see RFC 3260, sec. 4) */
1ca7768c 321
ca6549af 322 /* MPLS */
95c96174 323 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 324 __be32 labels[MAX_MPLS_LABELS];
325
34954ddc
FF		 326 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
327 __u8 vlan_p;
328 __u8 vlan_cfi;
329 __u16 vlan_id; /* 0xffff means no vlan tag */
330
331 __u8 svlan_p;
332 __u8 svlan_cfi;
333 __u16 svlan_id; /* 0xffff means no svlan tag */
334
222f1806
LC		 335 __u32 src_mac_count; /* How many MACs to iterate through */
336 __u32 dst_mac_count; /* How many MACs to iterate through */
337
338 unsigned char dst_mac[ETH_ALEN];
339 unsigned char src_mac[ETH_ALEN];
340
341 __u32 cur_dst_mac_offset;
342 __u32 cur_src_mac_offset;
252e3346
AV		 343 __be32 cur_saddr;
344 __be32 cur_daddr;
66ed1e5e 345 __u16 ip_id;
222f1806
LC		 346 __u16 cur_udp_dst;
347 __u16 cur_udp_src;
45b270f8 348 __u16 cur_queue_map;
222f1806 349 __u32 cur_pkt_size;
baac8564 350 __u32 last_pkt_size;
222f1806
LC		 351
352 __u8 hh[14];
353 /* = {
354 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
355
356 We fill in SRC address later
357 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
358 0x08, 0x00
359 };
360 */
361 __u16 pad; /* pad out the hh struct to an even 16 bytes */
362
63adc6fb 363 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 364 * are transmitting the same one multiple times
365 */
63adc6fb
SH		 366 struct net_device *odev; /* The out-going device.
367 * Note that the device should have it's
368 * pg_info pointer pointing back to this
369 * device.
370 * Set when the user specifies the out-going
371 * device name (not when the inject is
372 * started as it used to do.)
373 */
593f63b0 374 char odevname[32];
1da177e4 375 struct flow_state *flows;
95c96174
ED		 376 unsigned int cflows; /* Concurrent flows (config) */
377 unsigned int lflow; /* Flow length (config) */
378 unsigned int nflows; /* accumulated flows (stats) */
379 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 380
381 u16 queue_map_min;
382 u16 queue_map_max;
9e50e3ac 383 __u32 skb_priority; /* skb priority field */
e99b99b4 384 int node; /* Memory node */
45b270f8 385
a553e4a6
JHS		 386#ifdef CONFIG_XFRM
387 __u8 ipsmode; /* IPSEC mode (config) */
388 __u8 ipsproto; /* IPSEC type (config) */
389#endif
39df232f 390 char result[512];
1da177e4
LT		 391};
392
393struct pktgen_hdr {
252e3346
AV		 394 __be32 pgh_magic;
395 __be32 seq_num;
396 __be32 tv_sec;
397 __be32 tv_usec;
1da177e4
LT		 398};
399
4e58a027
CW		 400
401static int pg_net_id __read_mostly;
402
403struct pktgen_net {
404 struct net *net;
405 struct proc_dir_entry *proc_dir;
406 struct list_head pktgen_threads;
407 bool pktgen_exiting;
408};
551eaff1 409
1da177e4 410struct pktgen_thread {
63adc6fb 411 spinlock_t if_lock; /* for list of devices */
c26a8016 412 struct list_head if_list; /* All device here */
cdcdbe0b 413 struct list_head th_list;
ee74baa7 414 struct task_struct *tsk;
222f1806 415 char result[512];
222f1806 416
63adc6fb
SH		 417 /* Field for thread to receive "posted" events terminate,
418 stop ifs etc. */
222f1806
LC		 419
420 u32 control;
1da177e4
LT		 421 int cpu;
422
222f1806 423 wait_queue_head_t queue;
d3ede327 424 struct completion start_done;
4e58a027 425 struct pktgen_net *net;
1da177e4
LT		 426};
427
428#define REMOVE 1
429#define FIND 0
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 439static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 440static void pktgen_run_all_threads(struct pktgen_net *pn);
441static void pktgen_reset_all_threads(struct pktgen_net *pn);
442static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 443
222f1806 444static void pktgen_stop(struct pktgen_thread *t);
1da177e4 445static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 446
1da177e4 447/* Module parameters, defaults. */
65c5b786
SH		 448static int pg_count_d __read_mostly = 1000;
449static int pg_delay_d __read_mostly;
450static int pg_clone_skb_d __read_mostly;
451static int debug __read_mostly;
1da177e4 452
222fa076 453static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 454
1da177e4
LT		 455static struct notifier_block pktgen_notifier_block = {
456 .notifier_call = pktgen_device_event,
457};
458
1da177e4 459/*
4ec93edb 460 * /proc handling functions
1da177e4
LT		 461 *
462 */
463
d50a6b56 464static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 465{
c3d2f52d 466 seq_puts(seq, version);
d50a6b56 467 return 0;
1da177e4
LT		 468}
469
63adc6fb
SH		 470static ssize_t pgctrl_write(struct file *file, const char __user *buf,
471 size_t count, loff_t *ppos)
1da177e4 472{
1da177e4 473 int err = 0;
d50a6b56 474 char data[128];
4e58a027 475 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 476
222f1806
LC		 477 if (!capable(CAP_NET_ADMIN)) {
478 err = -EPERM;
1da177e4 479 goto out;
222f1806 480 }
1da177e4 481
d50a6b56
SH		 482 if (count > sizeof(data))
483 count = sizeof(data);
1da177e4 484
1da177e4 485 if (copy_from_user(data, buf, count)) {
b4099fab 486 err = -EFAULT;
d50a6b56 487 goto out;
222f1806
LC		 488 }
489 data[count - 1] = 0; /* Make string */
1da177e4 490
222f1806 491 if (!strcmp(data, "stop"))
4e58a027 492 pktgen_stop_all_threads_ifs(pn);
1da177e4 493
222f1806 494 else if (!strcmp(data, "start"))
4e58a027 495 pktgen_run_all_threads(pn);
1da177e4 496
eb37b41c 497 else if (!strcmp(data, "reset"))
4e58a027 498 pktgen_reset_all_threads(pn);
eb37b41c 499
222f1806 500 else
f9467eae 501 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 502
503 err = count;
504
222f1806
LC		 505out:
506 return err;
1da177e4
LT		 507}
508
d50a6b56
SH		 509static int pgctrl_open(struct inode *inode, struct file *file)
510{
511 return single_open(file, pgctrl_show, PDE(inode)->data);
512}
513
9a32144e 514static const struct file_operations pktgen_fops = {
222f1806
LC		 515 .owner = THIS_MODULE,
516 .open = pgctrl_open,
517 .read = seq_read,
518 .llseek = seq_lseek,
519 .write = pgctrl_write,
520 .release = single_release,
d50a6b56
SH		 521};
522
523static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 524{
648fda74 525 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 526 ktime_t stopped;
527 u64 idle;
222f1806
LC		 528
529 seq_printf(seq,
530 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
531 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
532 pkt_dev->max_pkt_size);
533
534 seq_printf(seq,
fd29cf72
SH		 535 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
536 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 537 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 538
539 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
540 pkt_dev->lflow);
541
45b270f8
RO		 542 seq_printf(seq,
543 " queue_map_min: %u queue_map_max: %u\n",
544 pkt_dev->queue_map_min,
545 pkt_dev->queue_map_max);
546
9e50e3ac
JF		 547 if (pkt_dev->skb_priority)
548 seq_printf(seq, " skb_priority: %u\n",
549 pkt_dev->skb_priority);
550
222f1806 551 if (pkt_dev->flags & F_IPV6) {
222f1806 552 seq_printf(seq,
47a0200d
AD		 553 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
554 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
555 &pkt_dev->in6_saddr,
556 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
557 &pkt_dev->in6_daddr,
558 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 559 } else {
560 seq_printf(seq,
561 " dst_min: %s dst_max: %s\n",
562 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 563 seq_printf(seq,
63adc6fb
SH		 564 " src_min: %s src_max: %s\n",
565 pkt_dev->src_min, pkt_dev->src_max);
566 }
1da177e4 567
222f1806 568 seq_puts(seq, " src_mac: ");
1da177e4 569
e174961c
JB		 570 seq_printf(seq, "%pM ",
571 is_zero_ether_addr(pkt_dev->src_mac) ?
572 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 573
574 seq_printf(seq, "dst_mac: ");
e174961c 575 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 576
577 seq_printf(seq,
63adc6fb
SH		 578 " udp_src_min: %d udp_src_max: %d"
579 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 580 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
581 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
582
583 seq_printf(seq,
ca6549af 584 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 585 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 586
ca6549af 587 if (pkt_dev->nr_labels) {
95c96174 588 unsigned int i;
ca6549af 589 seq_printf(seq, " mpls: ");
e71a4783 590 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 591 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
592 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
593 }
594
63adc6fb 595 if (pkt_dev->vlan_id != 0xffff)
34954ddc 596 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 597 pkt_dev->vlan_id, pkt_dev->vlan_p,
598 pkt_dev->vlan_cfi);
34954ddc 599
63adc6fb 600 if (pkt_dev->svlan_id != 0xffff)
34954ddc 601 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 602 pkt_dev->svlan_id, pkt_dev->svlan_p,
603 pkt_dev->svlan_cfi);
34954ddc 604
63adc6fb 605 if (pkt_dev->tos)
1ca7768c 606 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 607
63adc6fb 608 if (pkt_dev->traffic_class)
1ca7768c 609 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 610
e99b99b4
RO		 611 if (pkt_dev->node >= 0)
612 seq_printf(seq, " node: %d\n", pkt_dev->node);
613
ca6549af
SW		 614 seq_printf(seq, " Flags: ");
615
222f1806
LC		 616 if (pkt_dev->flags & F_IPV6)
617 seq_printf(seq, "IPV6 ");
1da177e4 618
222f1806
LC		 619 if (pkt_dev->flags & F_IPSRC_RND)
620 seq_printf(seq, "IPSRC_RND ");
1da177e4 621
222f1806
LC		 622 if (pkt_dev->flags & F_IPDST_RND)
623 seq_printf(seq, "IPDST_RND ");
1da177e4 624
222f1806
LC		 625 if (pkt_dev->flags & F_TXSIZE_RND)
626 seq_printf(seq, "TXSIZE_RND ");
1da177e4 627
222f1806
LC		 628 if (pkt_dev->flags & F_UDPSRC_RND)
629 seq_printf(seq, "UDPSRC_RND ");
1da177e4 630
222f1806
LC		 631 if (pkt_dev->flags & F_UDPDST_RND)
632 seq_printf(seq, "UDPDST_RND ");
1da177e4 633
ca6549af
SW		 634 if (pkt_dev->flags & F_MPLS_RND)
635 seq_printf(seq, "MPLS_RND ");
636
45b270f8
RO		 637 if (pkt_dev->flags & F_QUEUE_MAP_RND)
638 seq_printf(seq, "QUEUE_MAP_RND ");
639
e6fce5b9
RO		 640 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
641 seq_printf(seq, "QUEUE_MAP_CPU ");
642
007a531b
JHS		 643 if (pkt_dev->cflows) {
644 if (pkt_dev->flags & F_FLOW_SEQ)
645 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
646 else
647 seq_printf(seq, "FLOW_RND ");
648 }
649
a553e4a6
JHS		 650#ifdef CONFIG_XFRM
651 if (pkt_dev->flags & F_IPSEC_ON)
652 seq_printf(seq, "IPSEC ");
653#endif
654
222f1806
LC		 655 if (pkt_dev->flags & F_MACSRC_RND)
656 seq_printf(seq, "MACSRC_RND ");
1da177e4 657
222f1806
LC		 658 if (pkt_dev->flags & F_MACDST_RND)
659 seq_printf(seq, "MACDST_RND ");
1da177e4 660
34954ddc
FF		 661 if (pkt_dev->flags & F_VID_RND)
662 seq_printf(seq, "VID_RND ");
663
664 if (pkt_dev->flags & F_SVID_RND)
665 seq_printf(seq, "SVID_RND ");
666
e99b99b4
RO		 667 if (pkt_dev->flags & F_NODE)
668 seq_printf(seq, "NODE_ALLOC ");
669
222f1806
LC		 670 seq_puts(seq, "\n");
671
fd29cf72 672 /* not really stopped, more like last-running-at */
398f382c 673 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 674 idle = pkt_dev->idle_acc;
675 do_div(idle, NSEC_PER_USEC);
1da177e4 676
222f1806 677 seq_printf(seq,
fd29cf72 678 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 679 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 680 (unsigned long long)pkt_dev->errors);
681
682 seq_printf(seq,
683 " started: %lluus stopped: %lluus idle: %lluus\n",
684 (unsigned long long) ktime_to_us(pkt_dev->started_at),
685 (unsigned long long) ktime_to_us(stopped),
686 (unsigned long long) idle);
1da177e4 687
222f1806
LC		 688 seq_printf(seq,
689 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 690 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
691 pkt_dev->cur_src_mac_offset);
1da177e4 692
222f1806 693 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 694 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
695 &pkt_dev->cur_in6_saddr,
696 &pkt_dev->cur_in6_daddr);
222f1806 697 } else
0373a946
AW		 698 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
699 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 700
222f1806 701 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 702 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 703
45b270f8
RO		 704 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
705
222f1806 706 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 707
708 if (pkt_dev->result[0])
222f1806 709 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 710 else
222f1806 711 seq_printf(seq, "Result: Idle\n");
1da177e4 712
d50a6b56 713 return 0;
1da177e4
LT		 714}
715
ca6549af 716
63adc6fb
SH		 717static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
718 __u32 *num)
ca6549af
SW		 719{
720 int i = 0;
721 *num = 0;
722
e71a4783 723 for (; i < maxlen; i++) {
82fd5b5d 724 int value;
ca6549af
SW		 725 char c;
726 *num <<= 4;
727 if (get_user(c, &user_buffer[i]))
728 return -EFAULT;
82fd5b5d
AS		 729 value = hex_to_bin(c);
730 if (value >= 0)
731 *num |= value;
ca6549af
SW		 732 else
733 break;
734 }
735 return i;
736}
737
222f1806
LC		 738static int count_trail_chars(const char __user * user_buffer,
739 unsigned int maxlen)
1da177e4
LT		 740{
741 int i;
742
743 for (i = 0; i < maxlen; i++) {
222f1806
LC		 744 char c;
745 if (get_user(c, &user_buffer[i]))
746 return -EFAULT;
747 switch (c) {
1da177e4
LT		 748 case '\"':
749 case '\n':
750 case '\r':
751 case '\t':
752 case ' ':
753 case '=':
754 break;
755 default:
756 goto done;
3ff50b79 757 }
1da177e4
LT		 758 }
759done:
760 return i;
761}
762
bf0813bd
PG		 763static long num_arg(const char __user *user_buffer, unsigned long maxlen,
764 unsigned long *num)
1da177e4 765{
d6182223 766 int i;
1da177e4 767 *num = 0;
222f1806 768
d6182223 769 for (i = 0; i < maxlen; i++) {
222f1806
LC		 770 char c;
771 if (get_user(c, &user_buffer[i]))
772 return -EFAULT;
773 if ((c >= '0') && (c <= '9')) {
1da177e4 774 *num *= 10;
222f1806 775 *num += c - '0';
1da177e4
LT		 776 } else
777 break;
778 }
779 return i;
780}
781
222f1806 782static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 783{
d6182223 784 int i;
1da177e4 785
d6182223 786 for (i = 0; i < maxlen; i++) {
222f1806
LC		 787 char c;
788 if (get_user(c, &user_buffer[i]))
789 return -EFAULT;
790 switch (c) {
1da177e4
LT		 791 case '\"':
792 case '\n':
793 case '\r':
794 case '\t':
795 case ' ':
796 goto done_str;
797 break;
798 default:
799 break;
3ff50b79 800 }
1da177e4
LT		 801 }
802done_str:
1da177e4
LT		 803 return i;
804}
805
ca6549af
SW		 806static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
807{
95c96174 808 unsigned int n = 0;
ca6549af
SW		 809 char c;
810 ssize_t i = 0;
811 int len;
812
813 pkt_dev->nr_labels = 0;
814 do {
815 __u32 tmp;
1ca7768c 816 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 817 if (len <= 0)
818 return len;
819 pkt_dev->labels[n] = htonl(tmp);
820 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
821 pkt_dev->flags |= F_MPLS_RND;
822 i += len;
823 if (get_user(c, &buffer[i]))
824 return -EFAULT;
825 i++;
826 n++;
827 if (n >= MAX_MPLS_LABELS)
828 return -E2BIG;
e71a4783 829 } while (c == ',');
ca6549af
SW		 830
831 pkt_dev->nr_labels = n;
832 return i;
833}
834
222f1806
LC		 835static ssize_t pktgen_if_write(struct file *file,
836 const char __user * user_buffer, size_t count,
837 loff_t * offset)
1da177e4 838{
8a994a71 839 struct seq_file *seq = file->private_data;
222f1806 840 struct pktgen_dev *pkt_dev = seq->private;
d6182223 841 int i, max, len;
1da177e4
LT		 842 char name[16], valstr[32];
843 unsigned long value = 0;
222f1806
LC		 844 char *pg_result = NULL;
845 int tmp = 0;
1da177e4 846 char buf[128];
222f1806
LC		 847
848 pg_result = &(pkt_dev->result[0]);
849
1da177e4 850 if (count < 1) {
f9467eae 851 pr_warning("wrong command format\n");
1da177e4
LT		 852 return -EINVAL;
853 }
222f1806 854
d6182223
PG		 855 max = count;
856 tmp = count_trail_chars(user_buffer, max);
222f1806 857 if (tmp < 0) {
f9467eae 858 pr_warning("illegal format\n");
222f1806 859 return tmp;
1da177e4 860 }
d6182223 861 i = tmp;
222f1806 862
1da177e4
LT		 863 /* Read variable name */
864
865 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 866 if (len < 0)
222f1806 867 return len;
63adc6fb 868
1da177e4 869 memset(name, 0, sizeof(name));
222f1806 870 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 871 return -EFAULT;
872 i += len;
222f1806
LC		 873
874 max = count - i;
1da177e4 875 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 876 if (len < 0)
877 return len;
878
1da177e4
LT		 879 i += len;
880
881 if (debug) {
86c2c0a8 882 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 883 char tb[copy + 1];
884 if (copy_from_user(tb, user_buffer, copy))
1da177e4 885 return -EFAULT;
448d7b5d 886 tb[copy] = 0;
f342cda7
JP		 887 pr_debug("%s,%lu buffer -:%s:-\n",
888 name, (unsigned long)count, tb);
222f1806 889 }
1da177e4
LT		 890
891 if (!strcmp(name, "min_pkt_size")) {
892 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 893 if (len < 0)
222f1806 894 return len;
63adc6fb 895
1da177e4 896 i += len;
222f1806
LC		 897 if (value < 14 + 20 + 8)
898 value = 14 + 20 + 8;
899 if (value != pkt_dev->min_pkt_size) {
900 pkt_dev->min_pkt_size = value;
901 pkt_dev->cur_pkt_size = value;
902 }
903 sprintf(pg_result, "OK: min_pkt_size=%u",
904 pkt_dev->min_pkt_size);
1da177e4
LT		 905 return count;
906 }
907
222f1806 908 if (!strcmp(name, "max_pkt_size")) {
1da177e4 909 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 910 if (len < 0)
222f1806 911 return len;
63adc6fb 912
1da177e4 913 i += len;
222f1806
LC		 914 if (value < 14 + 20 + 8)
915 value = 14 + 20 + 8;
916 if (value != pkt_dev->max_pkt_size) {
917 pkt_dev->max_pkt_size = value;
918 pkt_dev->cur_pkt_size = value;
919 }
920 sprintf(pg_result, "OK: max_pkt_size=%u",
921 pkt_dev->max_pkt_size);
1da177e4
LT		 922 return count;
923 }
924
222f1806 925 /* Shortcut for min = max */
1da177e4
LT		 926
927 if (!strcmp(name, "pkt_size")) {
928 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 929 if (len < 0)
222f1806 930 return len;
63adc6fb 931
1da177e4 932 i += len;
222f1806
LC		 933 if (value < 14 + 20 + 8)
934 value = 14 + 20 + 8;
935 if (value != pkt_dev->min_pkt_size) {
936 pkt_dev->min_pkt_size = value;
937 pkt_dev->max_pkt_size = value;
938 pkt_dev->cur_pkt_size = value;
939 }
1da177e4
LT		 940 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
941 return count;
942 }
943
222f1806 944 if (!strcmp(name, "debug")) {
1da177e4 945 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 946 if (len < 0)
222f1806 947 return len;
63adc6fb 948
1da177e4 949 i += len;
222f1806 950 debug = value;
1da177e4
LT		 951 sprintf(pg_result, "OK: debug=%u", debug);
952 return count;
953 }
954
222f1806 955 if (!strcmp(name, "frags")) {
1da177e4 956 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 957 if (len < 0)
222f1806 958 return len;
63adc6fb 959
1da177e4
LT		 960 i += len;
961 pkt_dev->nfrags = value;
962 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
963 return count;
964 }
965 if (!strcmp(name, "delay")) {
966 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 967 if (len < 0)
222f1806 968 return len;
63adc6fb 969
1da177e4 970 i += len;
fd29cf72
SH		 971 if (value == 0x7FFFFFFF)
972 pkt_dev->delay = ULLONG_MAX;
973 else
9240d715 974 pkt_dev->delay = (u64)value;
fd29cf72
SH		 975
976 sprintf(pg_result, "OK: delay=%llu",
977 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 978 return count;
979 }
43d28b65
DT		 980 if (!strcmp(name, "rate")) {
981 len = num_arg(&user_buffer[i], 10, &value);
982 if (len < 0)
983 return len;
984
985 i += len;
986 if (!value)
987 return len;
988 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
989 if (debug)
f9467eae 990 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 991
992 sprintf(pg_result, "OK: rate=%lu", value);
993 return count;
994 }
995 if (!strcmp(name, "ratep")) {
996 len = num_arg(&user_buffer[i], 10, &value);
997 if (len < 0)
998 return len;
999
1000 i += len;
1001 if (!value)
1002 return len;
1003 pkt_dev->delay = NSEC_PER_SEC/value;
1004 if (debug)
f9467eae 1005 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1006
1007 sprintf(pg_result, "OK: rate=%lu", value);
1008 return count;
1009 }
222f1806 1010 if (!strcmp(name, "udp_src_min")) {
1da177e4 1011 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1012 if (len < 0)
222f1806 1013 return len;
63adc6fb 1014
1da177e4 1015 i += len;
222f1806
LC		 1016 if (value != pkt_dev->udp_src_min) {
1017 pkt_dev->udp_src_min = value;
1018 pkt_dev->cur_udp_src = value;
1019 }
1da177e4
LT		 1020 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1021 return count;
1022 }
222f1806 1023 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1024 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1025 if (len < 0)
222f1806 1026 return len;
63adc6fb 1027
1da177e4 1028 i += len;
222f1806
LC		 1029 if (value != pkt_dev->udp_dst_min) {
1030 pkt_dev->udp_dst_min = value;
1031 pkt_dev->cur_udp_dst = value;
1032 }
1da177e4
LT		 1033 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1034 return count;
1035 }
222f1806 1036 if (!strcmp(name, "udp_src_max")) {
1da177e4 1037 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1038 if (len < 0)
222f1806 1039 return len;
63adc6fb 1040
1da177e4 1041 i += len;
222f1806
LC		 1042 if (value != pkt_dev->udp_src_max) {
1043 pkt_dev->udp_src_max = value;
1044 pkt_dev->cur_udp_src = value;
1045 }
1da177e4
LT		 1046 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1047 return count;
1048 }
222f1806 1049 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1050 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1051 if (len < 0)
222f1806 1052 return len;
63adc6fb 1053
1da177e4 1054 i += len;
222f1806
LC		 1055 if (value != pkt_dev->udp_dst_max) {
1056 pkt_dev->udp_dst_max = value;
1057 pkt_dev->cur_udp_dst = value;
1058 }
1da177e4
LT		 1059 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1060 return count;
1061 }
1062 if (!strcmp(name, "clone_skb")) {
1063 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1064 if (len < 0)
222f1806 1065 return len;
d8873315
NH		 1066 if ((value > 0) &&
1067 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1068 return -ENOTSUPP;
1da177e4 1069 i += len;
222f1806
LC		 1070 pkt_dev->clone_skb = value;
1071
1da177e4
LT		 1072 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1073 return count;
1074 }
1075 if (!strcmp(name, "count")) {
1076 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1077 if (len < 0)
222f1806 1078 return len;
63adc6fb 1079
1da177e4
LT		 1080 i += len;
1081 pkt_dev->count = value;
1082 sprintf(pg_result, "OK: count=%llu",
222f1806 1083 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1084 return count;
1085 }
1086 if (!strcmp(name, "src_mac_count")) {
1087 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1088 if (len < 0)
222f1806 1089 return len;
63adc6fb 1090
1da177e4
LT		 1091 i += len;
1092 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1093 pkt_dev->src_mac_count = value;
1094 pkt_dev->cur_src_mac_offset = 0;
1095 }
1096 sprintf(pg_result, "OK: src_mac_count=%d",
1097 pkt_dev->src_mac_count);
1da177e4
LT		 1098 return count;
1099 }
1100 if (!strcmp(name, "dst_mac_count")) {
1101 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1102 if (len < 0)
222f1806 1103 return len;
63adc6fb 1104
1da177e4
LT		 1105 i += len;
1106 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1107 pkt_dev->dst_mac_count = value;
1108 pkt_dev->cur_dst_mac_offset = 0;
1109 }
1110 sprintf(pg_result, "OK: dst_mac_count=%d",
1111 pkt_dev->dst_mac_count);
1da177e4
LT		 1112 return count;
1113 }
e99b99b4
RO		 1114 if (!strcmp(name, "node")) {
1115 len = num_arg(&user_buffer[i], 10, &value);
1116 if (len < 0)
1117 return len;
1118
1119 i += len;
1120
1121 if (node_possible(value)) {
1122 pkt_dev->node = value;
1123 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1124 if (pkt_dev->page) {
1125 put_page(pkt_dev->page);
1126 pkt_dev->page = NULL;
1127 }
e99b99b4
RO		 1128 }
1129 else
1130 sprintf(pg_result, "ERROR: node not possible");
1131 return count;
1132 }
1da177e4 1133 if (!strcmp(name, "flag")) {
222f1806
LC		 1134 char f[32];
1135 memset(f, 0, 32);
1da177e4 1136 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1137 if (len < 0)
222f1806 1138 return len;
63adc6fb 1139
1da177e4
LT		 1140 if (copy_from_user(f, &user_buffer[i], len))
1141 return -EFAULT;
1142 i += len;
222f1806
LC		 1143 if (strcmp(f, "IPSRC_RND") == 0)
1144 pkt_dev->flags |= F_IPSRC_RND;
1145
1146 else if (strcmp(f, "!IPSRC_RND") == 0)
1147 pkt_dev->flags &= ~F_IPSRC_RND;
1148
1149 else if (strcmp(f, "TXSIZE_RND") == 0)
1150 pkt_dev->flags |= F_TXSIZE_RND;
1151
1152 else if (strcmp(f, "!TXSIZE_RND") == 0)
1153 pkt_dev->flags &= ~F_TXSIZE_RND;
1154
1155 else if (strcmp(f, "IPDST_RND") == 0)
1156 pkt_dev->flags |= F_IPDST_RND;
1157
1158 else if (strcmp(f, "!IPDST_RND") == 0)
1159 pkt_dev->flags &= ~F_IPDST_RND;
1160
1161 else if (strcmp(f, "UDPSRC_RND") == 0)
1162 pkt_dev->flags |= F_UDPSRC_RND;
1163
1164 else if (strcmp(f, "!UDPSRC_RND") == 0)
1165 pkt_dev->flags &= ~F_UDPSRC_RND;
1166
1167 else if (strcmp(f, "UDPDST_RND") == 0)
1168 pkt_dev->flags |= F_UDPDST_RND;
1169
1170 else if (strcmp(f, "!UDPDST_RND") == 0)
1171 pkt_dev->flags &= ~F_UDPDST_RND;
1172
1173 else if (strcmp(f, "MACSRC_RND") == 0)
1174 pkt_dev->flags |= F_MACSRC_RND;
1175
1176 else if (strcmp(f, "!MACSRC_RND") == 0)
1177 pkt_dev->flags &= ~F_MACSRC_RND;
1178
1179 else if (strcmp(f, "MACDST_RND") == 0)
1180 pkt_dev->flags |= F_MACDST_RND;
1181
1182 else if (strcmp(f, "!MACDST_RND") == 0)
1183 pkt_dev->flags &= ~F_MACDST_RND;
1184
ca6549af
SW		 1185 else if (strcmp(f, "MPLS_RND") == 0)
1186 pkt_dev->flags |= F_MPLS_RND;
1187
1188 else if (strcmp(f, "!MPLS_RND") == 0)
1189 pkt_dev->flags &= ~F_MPLS_RND;
1190
34954ddc
FF		 1191 else if (strcmp(f, "VID_RND") == 0)
1192 pkt_dev->flags |= F_VID_RND;
1193
1194 else if (strcmp(f, "!VID_RND") == 0)
1195 pkt_dev->flags &= ~F_VID_RND;
1196
1197 else if (strcmp(f, "SVID_RND") == 0)
1198 pkt_dev->flags |= F_SVID_RND;
1199
1200 else if (strcmp(f, "!SVID_RND") == 0)
1201 pkt_dev->flags &= ~F_SVID_RND;
1202
007a531b
JHS		 1203 else if (strcmp(f, "FLOW_SEQ") == 0)
1204 pkt_dev->flags |= F_FLOW_SEQ;
1205
45b270f8
RO		 1206 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1207 pkt_dev->flags |= F_QUEUE_MAP_RND;
1208
1209 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1210 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1211
1212 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1213 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1214
1215 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1216 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1217#ifdef CONFIG_XFRM
1218 else if (strcmp(f, "IPSEC") == 0)
1219 pkt_dev->flags |= F_IPSEC_ON;
1220#endif
1221
1ca7768c
FF		 1222 else if (strcmp(f, "!IPV6") == 0)
1223 pkt_dev->flags &= ~F_IPV6;
1224
e99b99b4
RO		 1225 else if (strcmp(f, "NODE_ALLOC") == 0)
1226 pkt_dev->flags |= F_NODE;
1227
1228 else if (strcmp(f, "!NODE_ALLOC") == 0)
1229 pkt_dev->flags &= ~F_NODE;
1230
222f1806
LC		 1231 else {
1232 sprintf(pg_result,
1233 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1234 f,
1ca7768c 1235 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1236 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1237 return count;
1238 }
1da177e4
LT		 1239 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1240 return count;
1241 }
1242 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1243 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1244 if (len < 0)
222f1806 1245 return len;
1da177e4 1246
222f1806 1247 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1248 return -EFAULT;
222f1806
LC		 1249 buf[len] = 0;
1250 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1251 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1252 strncpy(pkt_dev->dst_min, buf, len);
1253 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1254 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1255 }
1256 if (debug)
f342cda7 1257 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1258 i += len;
1da177e4
LT		 1259 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1260 return count;
1261 }
1262 if (!strcmp(name, "dst_max")) {
1263 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1264 if (len < 0)
222f1806 1265 return len;
63adc6fb 1266
1da177e4 1267
222f1806 1268 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1269 return -EFAULT;
1270
222f1806
LC		 1271 buf[len] = 0;
1272 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1273 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1274 strncpy(pkt_dev->dst_max, buf, len);
1275 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1276 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1277 }
1278 if (debug)
f342cda7 1279 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1280 i += len;
1281 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1282 return count;
1283 }
1284 if (!strcmp(name, "dst6")) {
1285 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1286 if (len < 0)
1287 return len;
1da177e4
LT		 1288
1289 pkt_dev->flags |= F_IPV6;
1290
222f1806 1291 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1292 return -EFAULT;
222f1806 1293 buf[len] = 0;
1da177e4 1294
c468fb13 1295 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1296 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1297
4e3fd7a0 1298 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1299
222f1806 1300 if (debug)
f342cda7 1301 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1302
222f1806 1303 i += len;
1da177e4
LT		 1304 sprintf(pg_result, "OK: dst6=%s", buf);
1305 return count;
1306 }
1307 if (!strcmp(name, "dst6_min")) {
1308 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1309 if (len < 0)
1310 return len;
1da177e4
LT		 1311
1312 pkt_dev->flags |= F_IPV6;
1313
222f1806 1314 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1315 return -EFAULT;
222f1806 1316 buf[len] = 0;
1da177e4 1317
c468fb13 1318 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1319 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1320
4e3fd7a0 1321 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1322 if (debug)
f342cda7 1323 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1324
222f1806 1325 i += len;
1da177e4
LT		 1326 sprintf(pg_result, "OK: dst6_min=%s", buf);
1327 return count;
1328 }
1329 if (!strcmp(name, "dst6_max")) {
1330 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1331 if (len < 0)
1332 return len;
1da177e4
LT		 1333
1334 pkt_dev->flags |= F_IPV6;
1335
222f1806 1336 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1337 return -EFAULT;
222f1806 1338 buf[len] = 0;
1da177e4 1339
c468fb13 1340 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1341 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1342
222f1806 1343 if (debug)
f342cda7 1344 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1345
222f1806 1346 i += len;
1da177e4
LT		 1347 sprintf(pg_result, "OK: dst6_max=%s", buf);
1348 return count;
1349 }
1350 if (!strcmp(name, "src6")) {
1351 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1352 if (len < 0)
1353 return len;
1da177e4
LT		 1354
1355 pkt_dev->flags |= F_IPV6;
1356
222f1806 1357 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1358 return -EFAULT;
222f1806 1359 buf[len] = 0;
1da177e4 1360
c468fb13 1361 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1362 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1363
4e3fd7a0 1364 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1365
222f1806 1366 if (debug)
f342cda7 1367 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1368
1369 i += len;
1da177e4
LT		 1370 sprintf(pg_result, "OK: src6=%s", buf);
1371 return count;
1372 }
1373 if (!strcmp(name, "src_min")) {
1374 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1375 if (len < 0)
222f1806 1376 return len;
63adc6fb 1377
222f1806 1378 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1379 return -EFAULT;
222f1806
LC		 1380 buf[len] = 0;
1381 if (strcmp(buf, pkt_dev->src_min) != 0) {
1382 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1383 strncpy(pkt_dev->src_min, buf, len);
1384 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1385 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1386 }
1387 if (debug)
f342cda7 1388 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1389 i += len;
1390 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1391 return count;
1392 }
1393 if (!strcmp(name, "src_max")) {
1394 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1395 if (len < 0)
222f1806 1396 return len;
63adc6fb 1397
222f1806 1398 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1399 return -EFAULT;
222f1806
LC		 1400 buf[len] = 0;
1401 if (strcmp(buf, pkt_dev->src_max) != 0) {
1402 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1403 strncpy(pkt_dev->src_max, buf, len);
1404 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1405 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1406 }
1407 if (debug)
f342cda7 1408 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1409 i += len;
1410 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1411 return count;
1412 }
1413 if (!strcmp(name, "dst_mac")) {
1da177e4 1414 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1415 if (len < 0)
222f1806 1416 return len;
63adc6fb 1417
1da177e4 1418 memset(valstr, 0, sizeof(valstr));
222f1806 1419 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1420 return -EFAULT;
1da177e4 1421
4940fc88
AD		 1422 if (!mac_pton(valstr, pkt_dev->dst_mac))
1423 return -EINVAL;
1da177e4 1424 /* Set up Dest MAC */
4940fc88 1425 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1426
4940fc88 1427 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1428 return count;
1429 }
1430 if (!strcmp(name, "src_mac")) {
1da177e4 1431 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1432 if (len < 0)
222f1806 1433 return len;
63adc6fb 1434
1da177e4 1435 memset(valstr, 0, sizeof(valstr));
222f1806 1436 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1437 return -EFAULT;
1da177e4 1438
4940fc88
AD		 1439 if (!mac_pton(valstr, pkt_dev->src_mac))
1440 return -EINVAL;
ce5d0b47 1441 /* Set up Src MAC */
4940fc88 1442 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1443
4940fc88 1444 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1445 return count;
1446 }
1447
222f1806
LC		 1448 if (!strcmp(name, "clear_counters")) {
1449 pktgen_clear_counters(pkt_dev);
1450 sprintf(pg_result, "OK: Clearing counters.\n");
1451 return count;
1452 }
1da177e4
LT		 1453
1454 if (!strcmp(name, "flows")) {
1455 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1456 if (len < 0)
222f1806 1457 return len;
63adc6fb 1458
1da177e4
LT		 1459 i += len;
1460 if (value > MAX_CFLOWS)
1461 value = MAX_CFLOWS;
1462
1463 pkt_dev->cflows = value;
1464 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1465 return count;
1466 }
1467
1468 if (!strcmp(name, "flowlen")) {
1469 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1470 if (len < 0)
222f1806 1471 return len;
63adc6fb 1472
1da177e4
LT		 1473 i += len;
1474 pkt_dev->lflow = value;
1475 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1476 return count;
1477 }
222f1806 1478
45b270f8
RO		 1479 if (!strcmp(name, "queue_map_min")) {
1480 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1481 if (len < 0)
45b270f8 1482 return len;
63adc6fb 1483
45b270f8
RO		 1484 i += len;
1485 pkt_dev->queue_map_min = value;
1486 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1487 return count;
1488 }
1489
1490 if (!strcmp(name, "queue_map_max")) {
1491 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1492 if (len < 0)
45b270f8 1493 return len;
63adc6fb 1494
45b270f8
RO		 1495 i += len;
1496 pkt_dev->queue_map_max = value;
1497 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1498 return count;
1499 }
1500
ca6549af 1501 if (!strcmp(name, "mpls")) {
95c96174 1502 unsigned int n, cnt;
cfcabdcc 1503
ca6549af 1504 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1505 if (len < 0)
1506 return len;
ca6549af 1507 i += len;
cfcabdcc 1508 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1509 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1510 cnt += sprintf(pg_result + cnt,
1511 "%08x%s", ntohl(pkt_dev->labels[n]),
1512 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1513
1514 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1515 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1516 pkt_dev->svlan_id = 0xffff;
1517
1518 if (debug)
f342cda7 1519 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1520 }
1521 return count;
1522 }
1523
1524 if (!strcmp(name, "vlan_id")) {
1525 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1526 if (len < 0)
34954ddc 1527 return len;
63adc6fb 1528
34954ddc
FF		 1529 i += len;
1530 if (value <= 4095) {
1531 pkt_dev->vlan_id = value; /* turn on VLAN */
1532
1533 if (debug)
f342cda7 1534 pr_debug("VLAN turned on\n");
34954ddc
FF		 1535
1536 if (debug && pkt_dev->nr_labels)
f342cda7 1537 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1538
1539 pkt_dev->nr_labels = 0; /* turn off MPLS */
1540 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1541 } else {
1542 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1543 pkt_dev->svlan_id = 0xffff;
1544
1545 if (debug)
f342cda7 1546 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1547 }
1548 return count;
1549 }
1550
1551 if (!strcmp(name, "vlan_p")) {
1552 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1553 if (len < 0)
34954ddc 1554 return len;
63adc6fb 1555
34954ddc
FF		 1556 i += len;
1557 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1558 pkt_dev->vlan_p = value;
1559 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1560 } else {
1561 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1562 }
1563 return count;
1564 }
1565
1566 if (!strcmp(name, "vlan_cfi")) {
1567 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1568 if (len < 0)
34954ddc 1569 return len;
63adc6fb 1570
34954ddc
FF		 1571 i += len;
1572 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1573 pkt_dev->vlan_cfi = value;
1574 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1575 } else {
1576 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1577 }
1578 return count;
1579 }
1580
1581 if (!strcmp(name, "svlan_id")) {
1582 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1583 if (len < 0)
34954ddc 1584 return len;
63adc6fb 1585
34954ddc
FF		 1586 i += len;
1587 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1588 pkt_dev->svlan_id = value; /* turn on SVLAN */
1589
1590 if (debug)
f342cda7 1591 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1592
1593 if (debug && pkt_dev->nr_labels)
f342cda7 1594 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1595
1596 pkt_dev->nr_labels = 0; /* turn off MPLS */
1597 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1598 } else {
1599 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1600 pkt_dev->svlan_id = 0xffff;
1601
1602 if (debug)
f342cda7 1603 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1604 }
1605 return count;
1606 }
1607
1608 if (!strcmp(name, "svlan_p")) {
1609 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1610 if (len < 0)
34954ddc 1611 return len;
63adc6fb 1612
34954ddc
FF		 1613 i += len;
1614 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1615 pkt_dev->svlan_p = value;
1616 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1617 } else {
1618 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1619 }
1620 return count;
1621 }
1622
1623 if (!strcmp(name, "svlan_cfi")) {
1624 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1625 if (len < 0)
34954ddc 1626 return len;
63adc6fb 1627
34954ddc
FF		 1628 i += len;
1629 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1630 pkt_dev->svlan_cfi = value;
1631 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1632 } else {
1633 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1634 }
ca6549af
SW		 1635 return count;
1636 }
1637
1ca7768c
FF		 1638 if (!strcmp(name, "tos")) {
1639 __u32 tmp_value = 0;
1640 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1641 if (len < 0)
1ca7768c 1642 return len;
63adc6fb 1643
1ca7768c
FF		 1644 i += len;
1645 if (len == 2) {
1646 pkt_dev->tos = tmp_value;
1647 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1648 } else {
1649 sprintf(pg_result, "ERROR: tos must be 00-ff");
1650 }
1651 return count;
1652 }
1653
1654 if (!strcmp(name, "traffic_class")) {
1655 __u32 tmp_value = 0;
1656 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1657 if (len < 0)
1ca7768c 1658 return len;
63adc6fb 1659
1ca7768c
FF		 1660 i += len;
1661 if (len == 2) {
1662 pkt_dev->traffic_class = tmp_value;
1663 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1664 } else {
1665 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1666 }
1667 return count;
1668 }
1669
9e50e3ac
JF		 1670 if (!strcmp(name, "skb_priority")) {
1671 len = num_arg(&user_buffer[i], 9, &value);
1672 if (len < 0)
1673 return len;
1674
1675 i += len;
1676 pkt_dev->skb_priority = value;
1677 sprintf(pg_result, "OK: skb_priority=%i",
1678 pkt_dev->skb_priority);
1679 return count;
1680 }
1681
1da177e4
LT		 1682 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1683 return -EINVAL;
1684}
1685
d50a6b56 1686static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1687{
d50a6b56
SH		 1688 return single_open(file, pktgen_if_show, PDE(inode)->data);
1689}
1da177e4 1690
9a32144e 1691static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1692 .owner = THIS_MODULE,
1693 .open = pktgen_if_open,
1694 .read = seq_read,
1695 .llseek = seq_lseek,
1696 .write = pktgen_if_write,
1697 .release = single_release,
d50a6b56 1698};
1da177e4 1699
d50a6b56
SH		 1700static int pktgen_thread_show(struct seq_file *seq, void *v)
1701{
222f1806 1702 struct pktgen_thread *t = seq->private;
648fda74 1703 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1704
1705 BUG_ON(!t);
1da177e4 1706
222f1806 1707 seq_printf(seq, "Running: ");
1da177e4 1708
222f1806 1709 if_lock(t);
c26a8016 1710 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1711 if (pkt_dev->running)
593f63b0 1712 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1713
222f1806
LC		 1714 seq_printf(seq, "\nStopped: ");
1715
c26a8016 1716 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1717 if (!pkt_dev->running)
593f63b0 1718 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1719
1720 if (t->result[0])
d50a6b56 1721 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1722 else
d50a6b56 1723 seq_printf(seq, "\nResult: NA\n");
1da177e4 1724
222f1806 1725 if_unlock(t);
1da177e4 1726
d50a6b56 1727 return 0;
1da177e4
LT		 1728}
1729
d50a6b56 1730static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1731 const char __user * user_buffer,
1732 size_t count, loff_t * offset)
1da177e4 1733{
8a994a71 1734 struct seq_file *seq = file->private_data;
222f1806 1735 struct pktgen_thread *t = seq->private;
d6182223 1736 int i, max, len, ret;
1da177e4 1737 char name[40];
222f1806 1738 char *pg_result;
d50a6b56 1739
1da177e4 1740 if (count < 1) {
222f1806 1741 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1742 return -EINVAL;
1743 }
d50a6b56 1744
d6182223
PG		 1745 max = count;
1746 len = count_trail_chars(user_buffer, max);
222f1806 1747 if (len < 0)
d50a6b56
SH		 1748 return len;
1749
d6182223 1750 i = len;
d50a6b56 1751
1da177e4
LT		 1752 /* Read variable name */
1753
1754 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1755 if (len < 0)
d50a6b56 1756 return len;
222f1806 1757
1da177e4
LT		 1758 memset(name, 0, sizeof(name));
1759 if (copy_from_user(name, &user_buffer[i], len))
1760 return -EFAULT;
1761 i += len;
d50a6b56 1762
222f1806 1763 max = count - i;
1da177e4 1764 len = count_trail_chars(&user_buffer[i], max);
222f1806 1765 if (len < 0)
d50a6b56
SH		 1766 return len;
1767
1da177e4
LT		 1768 i += len;
1769
d50a6b56 1770 if (debug)
f342cda7 1771 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1772
222f1806 1773 if (!t) {
f9467eae 1774 pr_err("ERROR: No thread\n");
1da177e4
LT		 1775 ret = -EINVAL;
1776 goto out;
1777 }
1778
1779 pg_result = &(t->result[0]);
1780
222f1806
LC		 1781 if (!strcmp(name, "add_device")) {
1782 char f[32];
1783 memset(f, 0, 32);
1da177e4 1784 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1785 if (len < 0) {
1786 ret = len;
1da177e4
LT		 1787 goto out;
1788 }
222f1806 1789 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1790 return -EFAULT;
1791 i += len;
6146e6a4 1792 mutex_lock(&pktgen_thread_lock);
604dfd6e 1793 ret = pktgen_add_device(t, f);
6146e6a4 1794 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1795 if (!ret) {
1796 ret = count;
1797 sprintf(pg_result, "OK: add_device=%s", f);
1798 } else
1799 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1800 goto out;
1801 }
1802
222f1806 1803 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1804 mutex_lock(&pktgen_thread_lock);
95ed63f7 1805 t->control |= T_REMDEVALL;
6146e6a4 1806 mutex_unlock(&pktgen_thread_lock);
222f1806 1807 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1808 ret = count;
222f1806 1809 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1810 goto out;
1811 }
1812
222f1806 1813 if (!strcmp(name, "max_before_softirq")) {
b163911f 1814 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1815 ret = count;
1da177e4
LT		 1816 goto out;
1817 }
1818
1819 ret = -EINVAL;
222f1806 1820out:
1da177e4
LT		 1821 return ret;
1822}
1823
d50a6b56 1824static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1825{
d50a6b56 1826 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1827}
1828
9a32144e 1829static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1830 .owner = THIS_MODULE,
1831 .open = pktgen_thread_open,
1832 .read = seq_read,
1833 .llseek = seq_lseek,
1834 .write = pktgen_thread_write,
1835 .release = single_release,
d50a6b56 1836};
1da177e4
LT		 1837
1838/* Think find or remove for NN */
4e58a027
CW		 1839static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1840 const char *ifname, int remove)
1da177e4
LT		 1841{
1842 struct pktgen_thread *t;
1843 struct pktgen_dev *pkt_dev = NULL;
3e984840 1844 bool exact = (remove == FIND);
1da177e4 1845
4e58a027 1846 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1847 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1848 if (pkt_dev) {
222f1806
LC		 1849 if (remove) {
1850 if_lock(t);
1851 pkt_dev->removal_mark = 1;
1852 t->control |= T_REMDEV;
1853 if_unlock(t);
1854 }
1da177e4
LT		 1855 break;
1856 }
1da177e4 1857 }
222f1806 1858 return pkt_dev;
1da177e4
LT		 1859}
1860
95ed63f7
AK		 1861/*
1862 * mark a device for removal
1863 */
4e58a027 1864static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1865{
1866 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1867 const int max_tries = 10, msec_per_try = 125;
1868 int i = 0;
95ed63f7 1869
6146e6a4 1870 mutex_lock(&pktgen_thread_lock);
f9467eae 1871 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1872
222f1806 1873 while (1) {
95ed63f7 1874
4e58a027 1875 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1876 if (pkt_dev == NULL)
1877 break; /* success */
95ed63f7 1878
6146e6a4 1879 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1880 pr_debug("%s: waiting for %s to disappear....\n",
1881 __func__, ifname);
95ed63f7 1882 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1883 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1884
1885 if (++i >= max_tries) {
f9467eae
JP		 1886 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1887 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1888 break;
1889 }
1890
1891 }
1892
6146e6a4 1893 mutex_unlock(&pktgen_thread_lock);
39df232f 1894}
95ed63f7 1895
4e58a027 1896static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 1897{
1898 struct pktgen_thread *t;
1899
4e58a027 1900 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 1901 struct pktgen_dev *pkt_dev;
1902
1903 list_for_each_entry(pkt_dev, &t->if_list, list) {
1904 if (pkt_dev->odev != dev)
1905 continue;
1906
4e58a027 1907 remove_proc_entry(pkt_dev->entry->name, pn->proc_dir);
39df232f 1908
2975315b 1909 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1910 pn->proc_dir,
2975315b
AD		 1911 &pktgen_if_fops,
1912 pkt_dev);
39df232f 1913 if (!pkt_dev->entry)
f9467eae
JP		 1914 pr_err("can't move proc entry for '%s'\n",
1915 dev->name);
39df232f
SH		 1916 break;
1917 }
1918 }
1da177e4
LT		 1919}
1920
222f1806
LC		 1921static int pktgen_device_event(struct notifier_block *unused,
1922 unsigned long event, void *ptr)
1da177e4 1923{
39df232f 1924 struct net_device *dev = ptr;
4e58a027 1925 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1926
4e58a027 1927 if (pn->pktgen_exiting)
e9dc8653
EB		 1928 return NOTIFY_DONE;
1929
1da177e4
LT		 1930 /* It is OK that we do not hold the group lock right now,
1931 * as we run under the RTNL lock.
1932 */
1933
1934 switch (event) {
39df232f 1935 case NETDEV_CHANGENAME:
4e58a027 1936 pktgen_change_name(pn, dev);
1da177e4 1937 break;
222f1806 1938
1da177e4 1939 case NETDEV_UNREGISTER:
4e58a027 1940 pktgen_mark_device(pn, dev->name);
1da177e4 1941 break;
3ff50b79 1942 }
1da177e4
LT		 1943
1944 return NOTIFY_DONE;
1945}
1946
4e58a027
CW		 1947static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
1948 struct pktgen_dev *pkt_dev,
63adc6fb 1949 const char *ifname)
e6fce5b9
RO		 1950{
1951 char b[IFNAMSIZ+5];
d6182223 1952 int i;
e6fce5b9 1953
63adc6fb
SH		 1954 for (i = 0; ifname[i] != '@'; i++) {
1955 if (i == IFNAMSIZ)
e6fce5b9
RO		 1956 break;
1957
1958 b[i] = ifname[i];
1959 }
1960 b[i] = 0;
1961
4e58a027 1962 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 1963}
1964
1965
1da177e4
LT		 1966/* Associate pktgen_dev with a device. */
1967
4e58a027
CW		 1968static int pktgen_setup_dev(const struct pktgen_net *pn,
1969 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1970{
1da177e4 1971 struct net_device *odev;
39df232f 1972 int err;
1da177e4
LT		 1973
1974 /* Clean old setups */
1da177e4
LT		 1975 if (pkt_dev->odev) {
1976 dev_put(pkt_dev->odev);
222f1806
LC		 1977 pkt_dev->odev = NULL;
1978 }
1da177e4 1979
4e58a027 1980 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 1981 if (!odev) {
f9467eae 1982 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1983 return -ENODEV;
1da177e4 1984 }
39df232f 1985
1da177e4 1986 if (odev->type != ARPHRD_ETHER) {
f9467eae 1987 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1988 err = -EINVAL;
1989 } else if (!netif_running(odev)) {
f9467eae 1990 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 1991 err = -ENETDOWN;
1992 } else {
1993 pkt_dev->odev = odev;
1994 return 0;
1da177e4 1995 }
1da177e4 1996
1da177e4 1997 dev_put(odev);
39df232f 1998 return err;
1da177e4
LT		 1999}
2000
2001/* Read pkt_dev from the interface and set up internal pktgen_dev
2002 * structure to have the right information to create/send packets
2003 */
2004static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2005{
64c00d81
AG		 2006 int ntxq;
2007
222f1806 2008 if (!pkt_dev->odev) {
f9467eae 2009 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2010 sprintf(pkt_dev->result,
2011 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2012 return;
2013 }
2014
64c00d81
AG		 2015 /* make sure that we don't pick a non-existing transmit queue */
2016 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2017
64c00d81 2018 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2019 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2020 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2021 pkt_dev->odevname);
26e29eed 2022 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2023 }
88271660 2024 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2025 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2026 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2027 pkt_dev->odevname);
26e29eed 2028 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2029 }
2030
222f1806 2031 /* Default to the interface's mac if not explicitly set. */
1da177e4 2032
f404e9a6 2033 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2034 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2035
222f1806 2036 /* Set up Dest MAC */
f404e9a6 2037 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2038
222f1806 2039 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2040 int i, set = 0, err = 1;
2041 struct inet6_dev *idev;
2042
68bf9f0b
AW		 2043 if (pkt_dev->min_pkt_size == 0) {
2044 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2045 + sizeof(struct udphdr)
2046 + sizeof(struct pktgen_hdr)
2047 + pkt_dev->pkt_overhead;
2048 }
2049
222f1806
LC		 2050 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2051 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2052 set = 1;
2053 break;
2054 }
2055
222f1806
LC		 2056 if (!set) {
2057
1da177e4
LT		 2058 /*
2059 * Use linklevel address if unconfigured.
2060 *
2061 * use ipv6_get_lladdr if/when it's get exported
2062 */
2063
8814c4b5 2064 rcu_read_lock();
63adc6fb
SH		 2065 idev = __in6_dev_get(pkt_dev->odev);
2066 if (idev) {
1da177e4
LT		 2067 struct inet6_ifaddr *ifp;
2068
2069 read_lock_bh(&idev->lock);
4c139b8c
AW		 2070 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2071 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2072 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2073 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2074 err = 0;
2075 break;
2076 }
2077 }
2078 read_unlock_bh(&idev->lock);
2079 }
8814c4b5 2080 rcu_read_unlock();
222f1806 2081 if (err)
f9467eae 2082 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2083 }
222f1806 2084 } else {
68bf9f0b
AW		 2085 if (pkt_dev->min_pkt_size == 0) {
2086 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2087 + sizeof(struct udphdr)
2088 + sizeof(struct pktgen_hdr)
2089 + pkt_dev->pkt_overhead;
2090 }
2091
1da177e4
LT		 2092 pkt_dev->saddr_min = 0;
2093 pkt_dev->saddr_max = 0;
2094 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2095
2096 struct in_device *in_dev;
1da177e4
LT		 2097
2098 rcu_read_lock();
e5ed6399 2099 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2100 if (in_dev) {
2101 if (in_dev->ifa_list) {
222f1806
LC		 2102 pkt_dev->saddr_min =
2103 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2104 pkt_dev->saddr_max = pkt_dev->saddr_min;
2105 }
1da177e4
LT		 2106 }
2107 rcu_read_unlock();
222f1806 2108 } else {
1da177e4
LT		 2109 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2110 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2111 }
2112
2113 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2114 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2115 }
222f1806 2116 /* Initialize current values. */
68bf9f0b
AW		 2117 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2118 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2119 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2120
222f1806
LC		 2121 pkt_dev->cur_dst_mac_offset = 0;
2122 pkt_dev->cur_src_mac_offset = 0;
2123 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2124 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2125 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2126 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2127 pkt_dev->nflows = 0;
2128}
2129
fd29cf72
SH		 2130
2131static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2132{
ef87979c 2133 ktime_t start_time, end_time;
417bc4b8 2134 s64 remaining;
2bc481cf
SH		 2135 struct hrtimer_sleeper t;
2136
2137 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2138 hrtimer_set_expires(&t.timer, spin_until);
2139
43d28b65 2140 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2141 if (remaining <= 0) {
2142 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2143 return;
417bc4b8 2144 }
2bc481cf 2145
398f382c 2146 start_time = ktime_get();
33136d12
ED		 2147 if (remaining < 100000) {
2148 /* for small delays (<100us), just loop until limit is reached */
2149 do {
398f382c
DB		 2150 end_time = ktime_get();
2151 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2152 } else {
2bc481cf
SH		 2153 /* see do_nanosleep */
2154 hrtimer_init_sleeper(&t, current);
2155 do {
2156 set_current_state(TASK_INTERRUPTIBLE);
2157 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2158 if (!hrtimer_active(&t.timer))
2159 t.task = NULL;
2160
2161 if (likely(t.task))
1da177e4 2162 schedule();
1da177e4 2163
2bc481cf
SH		 2164 hrtimer_cancel(&t.timer);
2165 } while (t.task && pkt_dev->running && !signal_pending(current));
2166 __set_current_state(TASK_RUNNING);
398f382c 2167 end_time = ktime_get();
1da177e4 2168 }
ef87979c
SH		 2169
2170 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2171 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2172}
2173
16dab72f
JHS		 2174static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2175{
a553e4a6 2176 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2177 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2178 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2179 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2180}
2181
648fda74 2182static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2183{
648fda74 2184 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2185}
2186
2187static inline int f_pick(struct pktgen_dev *pkt_dev)
2188{
2189 int flow = pkt_dev->curfl;
2190
2191 if (pkt_dev->flags & F_FLOW_SEQ) {
2192 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2193 /* reset time */
2194 pkt_dev->flows[flow].count = 0;
1211a645 2195 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2196 pkt_dev->curfl += 1;
2197 if (pkt_dev->curfl >= pkt_dev->cflows)
2198 pkt_dev->curfl = 0; /*reset */
2199 }
2200 } else {
33d7c5e5 2201 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2202 pkt_dev->curfl = flow;
007a531b 2203
1211a645 2204 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2205 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2206 pkt_dev->flows[flow].flags = 0;
2207 }
007a531b
JHS		 2208 }
2209
2210 return pkt_dev->curfl;
2211}
2212
a553e4a6
JHS		 2213
2214#ifdef CONFIG_XFRM
2215/* If there was already an IPSEC SA, we keep it as is, else
2216 * we go look for it ...
2217*/
bd55775c 2218#define DUMMY_MARK 0
fea1ab0f 2219static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2220{
2221 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2222 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6
JHS		 2223 if (!x) {
2224 /*slow path: we dont already have xfrm_state*/
4e58a027 2225 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
5447c5e4 2226 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2227 (xfrm_address_t *)&pkt_dev->cur_saddr,
2228 AF_INET,
2229 pkt_dev->ipsmode,
2230 pkt_dev->ipsproto, 0);
2231 if (x) {
2232 pkt_dev->flows[flow].x = x;
2233 set_pkt_overhead(pkt_dev);
63adc6fb 2234 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2235 }
2236
2237 }
2238}
2239#endif
fd2ea0a7
DM		 2240static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2241{
e6fce5b9
RO		 2242
2243 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2244 pkt_dev->cur_queue_map = smp_processor_id();
2245
896a7cf8 2246 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2247 __u16 t;
2248 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2249 t = prandom_u32() %
fd2ea0a7
DM		 2250 (pkt_dev->queue_map_max -
2251 pkt_dev->queue_map_min + 1)
2252 + pkt_dev->queue_map_min;
2253 } else {
2254 t = pkt_dev->cur_queue_map + 1;
2255 if (t > pkt_dev->queue_map_max)
2256 t = pkt_dev->queue_map_min;
2257 }
2258 pkt_dev->cur_queue_map = t;
2259 }
bfdbc0ac 2260 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2261}
2262
1da177e4
LT		 2263/* Increment/randomize headers according to flags and current values
2264 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2265 */
222f1806
LC		 2266static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2267{
2268 __u32 imn;
2269 __u32 imx;
2270 int flow = 0;
1da177e4 2271
007a531b
JHS		 2272 if (pkt_dev->cflows)
2273 flow = f_pick(pkt_dev);
1da177e4
LT		 2274
2275 /* Deal with source MAC */
222f1806
LC		 2276 if (pkt_dev->src_mac_count > 1) {
2277 __u32 mc;
2278 __u32 tmp;
2279
2280 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2281 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2282 else {
2283 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2284 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2285 pkt_dev->src_mac_count)
2286 pkt_dev->cur_src_mac_offset = 0;
2287 }
2288
2289 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2290 pkt_dev->hh[11] = tmp;
2291 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2292 pkt_dev->hh[10] = tmp;
2293 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2294 pkt_dev->hh[9] = tmp;
2295 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2296 pkt_dev->hh[8] = tmp;
2297 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2298 pkt_dev->hh[7] = tmp;
2299 }
2300
2301 /* Deal with Destination MAC */
2302 if (pkt_dev->dst_mac_count > 1) {
2303 __u32 mc;
2304 __u32 tmp;
2305
2306 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2307 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2308
2309 else {
2310 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2311 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2312 pkt_dev->dst_mac_count) {
2313 pkt_dev->cur_dst_mac_offset = 0;
2314 }
2315 }
2316
2317 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2318 pkt_dev->hh[5] = tmp;
2319 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2320 pkt_dev->hh[4] = tmp;
2321 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2322 pkt_dev->hh[3] = tmp;
2323 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2324 pkt_dev->hh[2] = tmp;
2325 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2326 pkt_dev->hh[1] = tmp;
2327 }
2328
ca6549af 2329 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2330 unsigned int i;
e71a4783 2331 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2332 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2333 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2334 ((__force __be32)prandom_u32() &
ca6549af
SW		 2335 htonl(0x000fffff));
2336 }
2337
34954ddc 2338 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2339 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2340 }
2341
2342 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2343 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2344 }
2345
222f1806
LC		 2346 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2347 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2348 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2349 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2350 + pkt_dev->udp_src_min;
222f1806
LC		 2351
2352 else {
1da177e4
LT		 2353 pkt_dev->cur_udp_src++;
2354 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2355 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2356 }
2357 }
2358
2359 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2360 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2361 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2362 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2363 + pkt_dev->udp_dst_min;
222f1806 2364 } else {
1da177e4 2365 pkt_dev->cur_udp_dst++;
222f1806 2366 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2367 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2368 }
2369 }
1da177e4
LT		 2370
2371 if (!(pkt_dev->flags & F_IPV6)) {
2372
63adc6fb
SH		 2373 imn = ntohl(pkt_dev->saddr_min);
2374 imx = ntohl(pkt_dev->saddr_max);
2375 if (imn < imx) {
1da177e4 2376 __u32 t;
222f1806 2377 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2378 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2379 else {
2380 t = ntohl(pkt_dev->cur_saddr);
2381 t++;
63adc6fb 2382 if (t > imx)
1da177e4 2383 t = imn;
63adc6fb 2384
1da177e4
LT		 2385 }
2386 pkt_dev->cur_saddr = htonl(t);
2387 }
222f1806 2388
007a531b 2389 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2390 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2391 } else {
252e3346
AV		 2392 imn = ntohl(pkt_dev->daddr_min);
2393 imx = ntohl(pkt_dev->daddr_max);
2394 if (imn < imx) {
1da177e4 2395 __u32 t;
252e3346 2396 __be32 s;
1da177e4
LT		 2397 if (pkt_dev->flags & F_IPDST_RND) {
2398
33d7c5e5 2399 t = prandom_u32() % (imx - imn) + imn;
252e3346 2400 s = htonl(t);
1da177e4 2401
21cf2253
JP		 2402 while (ipv4_is_loopback(s) ||
2403 ipv4_is_multicast(s) ||
1e637c74 2404 ipv4_is_lbcast(s) ||
21cf2253
JP		 2405 ipv4_is_zeronet(s) ||
2406 ipv4_is_local_multicast(s)) {
33d7c5e5
AM		 2407 t = prandom_u32() %
2408 (imx - imn) + imn;
252e3346 2409 s = htonl(t);
1da177e4 2410 }
252e3346
AV		 2411 pkt_dev->cur_daddr = s;
2412 } else {
1da177e4
LT		 2413 t = ntohl(pkt_dev->cur_daddr);
2414 t++;
2415 if (t > imx) {
2416 t = imn;
2417 }
2418 pkt_dev->cur_daddr = htonl(t);
2419 }
2420 }
222f1806 2421 if (pkt_dev->cflows) {
007a531b 2422 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2423 pkt_dev->flows[flow].cur_daddr =
2424 pkt_dev->cur_daddr;
a553e4a6
JHS		 2425#ifdef CONFIG_XFRM
2426 if (pkt_dev->flags & F_IPSEC_ON)
2427 get_ipsec_sa(pkt_dev, flow);
2428#endif
1da177e4
LT		 2429 pkt_dev->nflows++;
2430 }
2431 }
222f1806
LC		 2432 } else { /* IPV6 * */
2433
06e30411 2434 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2435 int i;
2436
2437 /* Only random destinations yet */
2438
222f1806 2439 for (i = 0; i < 4; i++) {
1da177e4 2440 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2441 (((__force __be32)prandom_u32() |
222f1806
LC		 2442 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2443 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2444 }
222f1806 2445 }
1da177e4
LT		 2446 }
2447
222f1806
LC		 2448 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2449 __u32 t;
2450 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2451 t = prandom_u32() %
5fa6fc76
SH		 2452 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2453 + pkt_dev->min_pkt_size;
222f1806 2454 } else {
1da177e4 2455 t = pkt_dev->cur_pkt_size + 1;
222f1806 2456 if (t > pkt_dev->max_pkt_size)
1da177e4 2457 t = pkt_dev->min_pkt_size;
222f1806
LC		 2458 }
2459 pkt_dev->cur_pkt_size = t;
2460 }
1da177e4 2461
fd2ea0a7 2462 set_cur_queue_map(pkt_dev);
45b270f8 2463
1da177e4
LT		 2464 pkt_dev->flows[flow].count++;
2465}
2466
a553e4a6
JHS		 2467
2468#ifdef CONFIG_XFRM
2469static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2470{
2471 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2472 int err = 0;
a553e4a6
JHS		 2473
2474 if (!x)
2475 return 0;
2476 /* XXX: we dont support tunnel mode for now until
2477 * we resolve the dst issue */
2478 if (x->props.mode != XFRM_MODE_TRANSPORT)
2479 return 0;
2480
2481 spin_lock(&x->lock);
a553e4a6 2482
13996378 2483 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2484 if (err)
2485 goto error;
2486 err = x->type->output(x, skb);
2487 if (err)
2488 goto error;
2489
63adc6fb 2490 x->curlft.bytes += skb->len;
a553e4a6 2491 x->curlft.packets++;
a553e4a6
JHS		 2492error:
2493 spin_unlock(&x->lock);
2494 return err;
2495}
2496
475ac1e4 2497static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2498{
2499 if (pkt_dev->cflows) {
2500 /* let go of the SAs if we have them */
d6182223
PG		 2501 int i;
2502 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2503 struct xfrm_state *x = pkt_dev->flows[i].x;
2504 if (x) {
2505 xfrm_state_put(x);
2506 pkt_dev->flows[i].x = NULL;
2507 }
2508 }
2509 }
2510}
2511
475ac1e4 2512static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2513 struct sk_buff *skb, __be16 protocol)
2514{
2515 if (pkt_dev->flags & F_IPSEC_ON) {
2516 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2517 int nhead = 0;
2518 if (x) {
2519 int ret;
2520 __u8 *eth;
2521 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2522 if (nhead > 0) {
a553e4a6
JHS		 2523 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2524 if (ret < 0) {
f9467eae
JP		 2525 pr_err("Error expanding ipsec packet %d\n",
2526 ret);
b4bb4ac8 2527 goto err;
a553e4a6
JHS		 2528 }
2529 }
2530
2531 /* ipsec is not expecting ll header */
2532 skb_pull(skb, ETH_HLEN);
2533 ret = pktgen_output_ipsec(skb, pkt_dev);
2534 if (ret) {
f9467eae 2535 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2536 goto err;
a553e4a6
JHS		 2537 }
2538 /* restore ll */
2539 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2540 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2541 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2542 }
2543 }
2544 return 1;
b4bb4ac8
IJ		 2545err:
2546 kfree_skb(skb);
2547 return 0;
a553e4a6
JHS		 2548}
2549#endif
2550
ca6549af
SW		 2551static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2552{
95c96174 2553 unsigned int i;
63adc6fb 2554 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2555 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2556
ca6549af
SW		 2557 mpls--;
2558 *mpls |= MPLS_STACK_BOTTOM;
2559}
2560
0f37c605
AV		 2561static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2562 unsigned int prio)
2563{
2564 return htons(id | (cfi << 12) | (prio << 13));
2565}
2566
26ad7879
ED		 2567static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2568 int datalen)
2569{
2570 struct timeval timestamp;
2571 struct pktgen_hdr *pgh;
2572
2573 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2574 datalen -= sizeof(*pgh);
2575
2576 if (pkt_dev->nfrags <= 0) {
05aebe2e 2577 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2578 } else {
2579 int frags = pkt_dev->nfrags;
2580 int i, len;
7d36a991 2581 int frag_len;
26ad7879
ED		 2582
2583
2584 if (frags > MAX_SKB_FRAGS)
2585 frags = MAX_SKB_FRAGS;
2586 len = datalen - frags * PAGE_SIZE;
2587 if (len > 0) {
2588 memset(skb_put(skb, len), 0, len);
2589 datalen = frags * PAGE_SIZE;
2590 }
2591
2592 i = 0;
7d36a991 2593 frag_len = (datalen/frags) < PAGE_SIZE ?
2594 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2595 while (datalen > 0) {
2596 if (unlikely(!pkt_dev->page)) {
2597 int node = numa_node_id();
2598
2599 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2600 node = pkt_dev->node;
2601 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2602 if (!pkt_dev->page)
2603 break;
2604 }
a0bec1cd 2605 get_page(pkt_dev->page);
ea2ab693 2606 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2607 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2608 /*last fragment, fill rest of data*/
2609 if (i == (frags - 1))
9e903e08
ED		 2610 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2611 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2612 else
9e903e08
ED		 2613 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2614 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2615 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2616 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2617 i++;
2618 skb_shinfo(skb)->nr_frags = i;
2619 }
26ad7879
ED		 2620 }
2621
2622 /* Stamp the time, and sequence number,
2623 * convert them to network byte order
2624 */
2625 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2626 pgh->seq_num = htonl(pkt_dev->seq_num);
2627
2628 do_gettimeofday(&timestamp);
2629 pgh->tv_sec = htonl(timestamp.tv_sec);
2630 pgh->tv_usec = htonl(timestamp.tv_usec);
2631}
2632
222f1806
LC		 2633static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2634 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2635{
2636 struct sk_buff *skb = NULL;
2637 __u8 *eth;
2638 struct udphdr *udph;
2639 int datalen, iplen;
2640 struct iphdr *iph;
d5f1ce9a 2641 __be16 protocol = htons(ETH_P_IP);
ca6549af 2642 __be32 *mpls;
34954ddc
FF		 2643 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2644 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2645 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2646 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2647 u16 queue_map;
ca6549af
SW		 2648
2649 if (pkt_dev->nr_labels)
d5f1ce9a 2650 protocol = htons(ETH_P_MPLS_UC);
222f1806 2651
34954ddc 2652 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2653 protocol = htons(ETH_P_8021Q);
34954ddc 2654
64053bee
RO		 2655 /* Update any of the values, used when we're incrementing various
2656 * fields.
2657 */
2658 mod_cur_headers(pkt_dev);
eb589063 2659 queue_map = pkt_dev->cur_queue_map;
64053bee 2660
7ac5459e 2661 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2662
2663 if (pkt_dev->flags & F_NODE) {
2664 int node;
2665
2666 if (pkt_dev->node >= 0)
2667 node = pkt_dev->node;
2668 else
2669 node = numa_node_id();
2670
2671 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2672 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2673 if (likely(skb)) {
2674 skb_reserve(skb, NET_SKB_PAD);
2675 skb->dev = odev;
2676 }
2677 }
2678 else
2679 skb = __netdev_alloc_skb(odev,
2680 pkt_dev->cur_pkt_size + 64
2681 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2682
1da177e4
LT		 2683 if (!skb) {
2684 sprintf(pkt_dev->result, "No memory");
2685 return NULL;
2686 }
a8d764b9 2687 prefetchw(skb->data);
1da177e4 2688
7ac5459e 2689 skb_reserve(skb, datalen);
1da177e4
LT		 2690
2691 /* Reserve for ethernet and IP header */
2692 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2693 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2694 if (pkt_dev->nr_labels)
2695 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2696
2697 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2698 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2699 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2700 *svlan_tci = build_tci(pkt_dev->svlan_id,
2701 pkt_dev->svlan_cfi,
2702 pkt_dev->svlan_p);
34954ddc 2703 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2704 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2705 }
2706 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2707 *vlan_tci = build_tci(pkt_dev->vlan_id,
2708 pkt_dev->vlan_cfi,
2709 pkt_dev->vlan_p);
34954ddc 2710 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2711 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2712 }
2713
27a884dc 2714 skb->network_header = skb->tail;
b0e380b1 2715 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2716 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2717 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2718 skb->priority = pkt_dev->skb_priority;
2719
ddc7b8e3
ACM		 2720 iph = ip_hdr(skb);
2721 udph = udp_hdr(skb);
1da177e4 2722
1da177e4 2723 memcpy(eth, pkt_dev->hh, 12);
252e3346 2724 *(__be16 *) & eth[12] = protocol;
1da177e4 2725
ca6549af
SW		 2726 /* Eth + IPh + UDPh + mpls */
2727 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2728 pkt_dev->pkt_overhead;
6af773e7 2729 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2730 datalen = sizeof(struct pktgen_hdr);
222f1806 2731
1da177e4
LT		 2732 udph->source = htons(pkt_dev->cur_udp_src);
2733 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2734 udph->len = htons(datalen + 8); /* DATA + udphdr */
2735 udph->check = 0; /* No checksum */
1da177e4
LT		 2736
2737 iph->ihl = 5;
2738 iph->version = 4;
2739 iph->ttl = 32;
1ca7768c 2740 iph->tos = pkt_dev->tos;
222f1806 2741 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2742 iph->saddr = pkt_dev->cur_saddr;
2743 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2744 iph->id = htons(pkt_dev->ip_id);
2745 pkt_dev->ip_id++;
1da177e4
LT		 2746 iph->frag_off = 0;
2747 iplen = 20 + 8 + datalen;
2748 iph->tot_len = htons(iplen);
2749 iph->check = 0;
222f1806 2750 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2751 skb->protocol = protocol;
b0e380b1 2752 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2753 pkt_dev->pkt_overhead);
1da177e4
LT		 2754 skb->dev = odev;
2755 skb->pkt_type = PACKET_HOST;
26ad7879 2756 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2757
a553e4a6
JHS		 2758#ifdef CONFIG_XFRM
2759 if (!process_ipsec(pkt_dev, skb, protocol))
2760 return NULL;
2761#endif
2762
1da177e4
LT		 2763 return skb;
2764}
2765
222f1806
LC		 2766static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2767 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2768{
2769 struct sk_buff *skb = NULL;
2770 __u8 *eth;
2771 struct udphdr *udph;
2772 int datalen;
2773 struct ipv6hdr *iph;
d5f1ce9a 2774 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2775 __be32 *mpls;
34954ddc
FF		 2776 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2777 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2778 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2779 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2780 u16 queue_map;
ca6549af
SW		 2781
2782 if (pkt_dev->nr_labels)
d5f1ce9a 2783 protocol = htons(ETH_P_MPLS_UC);
64053bee 2784
34954ddc 2785 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2786 protocol = htons(ETH_P_8021Q);
34954ddc 2787
64053bee
RO		 2788 /* Update any of the values, used when we're incrementing various
2789 * fields.
2790 */
2791 mod_cur_headers(pkt_dev);
eb589063 2792 queue_map = pkt_dev->cur_queue_map;
64053bee 2793
e470757d
SH		 2794 skb = __netdev_alloc_skb(odev,
2795 pkt_dev->cur_pkt_size + 64
2796 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2797 if (!skb) {
2798 sprintf(pkt_dev->result, "No memory");
2799 return NULL;
2800 }
a8d764b9 2801 prefetchw(skb->data);
1da177e4
LT		 2802
2803 skb_reserve(skb, 16);
2804
2805 /* Reserve for ethernet and IP header */
2806 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2807 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2808 if (pkt_dev->nr_labels)
2809 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2810
2811 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2812 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2813 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2814 *svlan_tci = build_tci(pkt_dev->svlan_id,
2815 pkt_dev->svlan_cfi,
2816 pkt_dev->svlan_p);
34954ddc 2817 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2818 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2819 }
2820 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2821 *vlan_tci = build_tci(pkt_dev->vlan_id,
2822 pkt_dev->vlan_cfi,
2823 pkt_dev->vlan_p);
34954ddc 2824 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2825 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2826 }
2827
27a884dc 2828 skb->network_header = skb->tail;
b0e380b1 2829 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2830 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2831 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2832 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 2833 iph = ipv6_hdr(skb);
2834 udph = udp_hdr(skb);
1da177e4 2835
1da177e4 2836 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2837 *(__be16 *) &eth[12] = protocol;
64053bee 2838
ca6549af
SW		 2839 /* Eth + IPh + UDPh + mpls */
2840 datalen = pkt_dev->cur_pkt_size - 14 -
2841 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2842 pkt_dev->pkt_overhead;
1da177e4 2843
5aa8b572 2844 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2845 datalen = sizeof(struct pktgen_hdr);
e87cc472 2846 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2847 }
2848
2849 udph->source = htons(pkt_dev->cur_udp_src);
2850 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2851 udph->len = htons(datalen + sizeof(struct udphdr));
2852 udph->check = 0; /* No checksum */
1da177e4 2853
d5f1ce9a 2854 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2855
1ca7768c
FF		 2856 if (pkt_dev->traffic_class) {
2857 /* Version + traffic class + flow (0) */
252e3346 2858 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2859 }
2860
1da177e4
LT		 2861 iph->hop_limit = 32;
2862
2863 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2864 iph->nexthdr = IPPROTO_UDP;
2865
4e3fd7a0
AD		 2866 iph->daddr = pkt_dev->cur_in6_daddr;
2867 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2868
b0e380b1 2869 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2870 pkt_dev->pkt_overhead);
ca6549af 2871 skb->protocol = protocol;
1da177e4
LT		 2872 skb->dev = odev;
2873 skb->pkt_type = PACKET_HOST;
2874
26ad7879 2875 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2876
1da177e4
LT		 2877 return skb;
2878}
2879
475ac1e4
SH		 2880static struct sk_buff *fill_packet(struct net_device *odev,
2881 struct pktgen_dev *pkt_dev)
1da177e4 2882{
222f1806 2883 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2884 return fill_packet_ipv6(odev, pkt_dev);
2885 else
2886 return fill_packet_ipv4(odev, pkt_dev);
2887}
2888
222f1806 2889static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2890{
222f1806
LC		 2891 pkt_dev->seq_num = 1;
2892 pkt_dev->idle_acc = 0;
1da177e4 2893 pkt_dev->sofar = 0;
222f1806
LC		 2894 pkt_dev->tx_bytes = 0;
2895 pkt_dev->errors = 0;
1da177e4
LT		 2896}
2897
2898/* Set up structure for sending pkts, clear counters */
2899
2900static void pktgen_run(struct pktgen_thread *t)
2901{
c26a8016 2902 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2903 int started = 0;
2904
f9467eae 2905 func_enter();
1da177e4
LT		 2906
2907 if_lock(t);
c26a8016 2908 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 2909
2910 /*
2911 * setup odev and create initial packet.
2912 */
2913 pktgen_setup_inject(pkt_dev);
2914
222f1806 2915 if (pkt_dev->odev) {
1da177e4 2916 pktgen_clear_counters(pkt_dev);
222f1806 2917 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 2918 pkt_dev->skb = NULL;
398f382c 2919 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 2920
16dab72f 2921 set_pkt_overhead(pkt_dev);
222f1806 2922
1da177e4
LT		 2923 strcpy(pkt_dev->result, "Starting");
2924 started++;
222f1806 2925 } else
1da177e4
LT		 2926 strcpy(pkt_dev->result, "Error starting");
2927 }
2928 if_unlock(t);
222f1806
LC		 2929 if (started)
2930 t->control &= ~(T_STOP);
1da177e4
LT		 2931}
2932
4e58a027 2933static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 2934{
cdcdbe0b 2935 struct pktgen_thread *t;
1da177e4 2936
f9467eae 2937 func_enter();
1da177e4 2938
6146e6a4 2939 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 2940
4e58a027 2941 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 2942 t->control |= T_STOP;
cdcdbe0b 2943
6146e6a4 2944 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 2945}
2946
648fda74 2947static int thread_is_running(const struct pktgen_thread *t)
1da177e4 2948{
648fda74 2949 const struct pktgen_dev *pkt_dev;
1da177e4 2950
c26a8016 2951 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 2952 if (pkt_dev->running)
2953 return 1;
2954 return 0;
1da177e4
LT		 2955}
2956
222f1806 2957static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 2958{
222f1806 2959 if_lock(t);
1da177e4 2960
222f1806 2961 while (thread_is_running(t)) {
1da177e4 2962
222f1806 2963 if_unlock(t);
1da177e4 2964
222f1806 2965 msleep_interruptible(100);
1da177e4 2966
222f1806
LC		 2967 if (signal_pending(current))
2968 goto signal;
2969 if_lock(t);
2970 }
2971 if_unlock(t);
2972 return 1;
2973signal:
2974 return 0;
1da177e4
LT		 2975}
2976
4e58a027 2977static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 2978{
cdcdbe0b 2979 struct pktgen_thread *t;
1da177e4 2980 int sig = 1;
222f1806 2981
6146e6a4 2982 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 2983
4e58a027 2984 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 2985 sig = pktgen_wait_thread_run(t);
222f1806
LC		 2986 if (sig == 0)
2987 break;
1da177e4 2988 }
cdcdbe0b
LC		 2989
2990 if (sig == 0)
4e58a027 2991 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 2992 t->control |= (T_STOP);
cdcdbe0b 2993
6146e6a4 2994 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 2995 return sig;
2996}
2997
4e58a027 2998static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 2999{
cdcdbe0b 3000 struct pktgen_thread *t;
1da177e4 3001
f9467eae 3002 func_enter();
1da177e4 3003
6146e6a4 3004 mutex_lock(&pktgen_thread_lock);
1da177e4 3005
4e58a027 3006 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3007 t->control |= (T_RUN);
cdcdbe0b 3008
6146e6a4 3009 mutex_unlock(&pktgen_thread_lock);
1da177e4 3010
63adc6fb
SH		 3011 /* Propagate thread->control */
3012 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3013
4e58a027 3014 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3015}
3016
4e58a027 3017static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3018{
3019 struct pktgen_thread *t;
3020
f9467eae 3021 func_enter();
eb37b41c
JB		 3022
3023 mutex_lock(&pktgen_thread_lock);
3024
4e58a027 3025 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3026 t->control |= (T_REMDEVALL);
3027
3028 mutex_unlock(&pktgen_thread_lock);
3029
63adc6fb
SH		 3030 /* Propagate thread->control */
3031 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3032
4e58a027 3033 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3034}
3035
1da177e4
LT		 3036static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3037{
fd29cf72 3038 __u64 bps, mbps, pps;
222f1806 3039 char *p = pkt_dev->result;
fd29cf72
SH		 3040 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3041 pkt_dev->started_at);
3042 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3043
03a14ab1 3044 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3045 (unsigned long long)ktime_to_us(elapsed),
3046 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3047 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3048 (unsigned long long)pkt_dev->sofar,
3049 pkt_dev->cur_pkt_size, nr_frags);
3050
fd29cf72
SH		 3051 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3052 ktime_to_ns(elapsed));
222f1806
LC		 3053
3054 bps = pps * 8 * pkt_dev->cur_pkt_size;
3055
3056 mbps = bps;
3057 do_div(mbps, 1000000);
3058 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3059 (unsigned long long)pps,
3060 (unsigned long long)mbps,
3061 (unsigned long long)bps,
3062 (unsigned long long)pkt_dev->errors);
1da177e4 3063}
1da177e4
LT		 3064
3065/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3066static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3067{
222f1806 3068 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3069
222f1806 3070 if (!pkt_dev->running) {
f9467eae
JP		 3071 pr_warning("interface: %s is already stopped\n",
3072 pkt_dev->odevname);
222f1806
LC		 3073 return -EINVAL;
3074 }
1da177e4 3075
3bda06a3
SH		 3076 kfree_skb(pkt_dev->skb);
3077 pkt_dev->skb = NULL;
398f382c 3078 pkt_dev->stopped_at = ktime_get();
222f1806 3079 pkt_dev->running = 0;
1da177e4 3080
95ed63f7 3081 show_results(pkt_dev, nr_frags);
1da177e4 3082
222f1806 3083 return 0;
1da177e4
LT		 3084}
3085
222f1806 3086static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3087{
c26a8016 3088 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3089
1da177e4
LT		 3090 if_lock(t);
3091
c26a8016
LC		 3092 list_for_each_entry(pkt_dev, &t->if_list, list) {
3093 if (!pkt_dev->running)
222f1806
LC		 3094 continue;
3095 if (best == NULL)
c26a8016 3096 best = pkt_dev;
398f382c 3097 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3098 best = pkt_dev;
1da177e4
LT		 3099 }
3100 if_unlock(t);
222f1806 3101 return best;
1da177e4
LT		 3102}
3103
222f1806
LC		 3104static void pktgen_stop(struct pktgen_thread *t)
3105{
c26a8016 3106 struct pktgen_dev *pkt_dev;
1da177e4 3107
f9467eae 3108 func_enter();
1da177e4 3109
222f1806 3110 if_lock(t);
1da177e4 3111
c26a8016
LC		 3112 list_for_each_entry(pkt_dev, &t->if_list, list) {
3113 pktgen_stop_device(pkt_dev);
95ed63f7 3114 }
1da177e4 3115
222f1806 3116 if_unlock(t);
1da177e4
LT		 3117}
3118
95ed63f7
AK		 3119/*
3120 * one of our devices needs to be removed - find it
3121 * and remove it
3122 */
3123static void pktgen_rem_one_if(struct pktgen_thread *t)
3124{
c26a8016
LC		 3125 struct list_head *q, *n;
3126 struct pktgen_dev *cur;
95ed63f7 3127
f9467eae 3128 func_enter();
95ed63f7
AK		 3129
3130 if_lock(t);
3131
c26a8016
LC		 3132 list_for_each_safe(q, n, &t->if_list) {
3133 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3134
222f1806
LC		 3135 if (!cur->removal_mark)
3136 continue;
95ed63f7 3137
86dc1ad2 3138 kfree_skb(cur->skb);
95ed63f7
AK		 3139 cur->skb = NULL;
3140
3141 pktgen_remove_device(t, cur);
3142
3143 break;
3144 }
3145
3146 if_unlock(t);
3147}
3148
222f1806 3149static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3150{
c26a8016
LC		 3151 struct list_head *q, *n;
3152 struct pktgen_dev *cur;
222f1806 3153
f9467eae
JP		 3154 func_enter();
3155
222f1806 3156 /* Remove all devices, free mem */
95ed63f7 3157
222f1806 3158 if_lock(t);
1da177e4 3159
c26a8016
LC		 3160 list_for_each_safe(q, n, &t->if_list) {
3161 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3162
86dc1ad2 3163 kfree_skb(cur->skb);
95ed63f7
AK		 3164 cur->skb = NULL;
3165
1da177e4
LT		 3166 pktgen_remove_device(t, cur);
3167 }
3168
222f1806 3169 if_unlock(t);
1da177e4
LT		 3170}
3171
222f1806 3172static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3173{
222f1806 3174 /* Remove from the thread list */
4e58a027 3175 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3176}
3177
ef87979c 3178static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3179{
398f382c 3180 ktime_t idle_start = ktime_get();
ef87979c 3181 schedule();
398f382c 3182 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3183}
3791decb 3184
ef87979c
SH		 3185static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3186{
398f382c 3187 ktime_t idle_start = ktime_get();
3791decb 3188
ef87979c
SH		 3189 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3190 if (signal_pending(current))
3191 break;
3192
3193 if (need_resched())
3194 pktgen_resched(pkt_dev);
3195 else
3196 cpu_relax();
3197 }
398f382c 3198 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3199}
3200
475ac1e4 3201static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3202{
00829823 3203 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3204 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3205 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3206 struct netdev_queue *txq;
fd2ea0a7 3207 u16 queue_map;
1da177e4
LT		 3208 int ret;
3209
ef87979c
SH		 3210 /* If device is offline, then don't send */
3211 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3212 pktgen_stop_device(pkt_dev);
3213 return;
fd2ea0a7
DM		 3214 }
3215
ef87979c
SH		 3216 /* This is max DELAY, this has special meaning of
3217 * "never transmit"
3218 */
3219 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3220 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3221 return;
1da177e4 3222 }
222f1806 3223
ef87979c 3224 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3225 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3226 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3227 /* build a new pkt */
3228 kfree_skb(pkt_dev->skb);
3229
3230 pkt_dev->skb = fill_packet(odev, pkt_dev);
3231 if (pkt_dev->skb == NULL) {
f9467eae 3232 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3233 schedule();
3234 pkt_dev->clone_count--; /* back out increment, OOM */
3235 return;
1da177e4 3236 }
baac8564 3237 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3238 pkt_dev->allocated_skbs++;
3239 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3240 }
95ed63f7 3241
ef87979c
SH		 3242 if (pkt_dev->delay && pkt_dev->last_ok)
3243 spin(pkt_dev, pkt_dev->next_tx);
3244
fd2ea0a7
DM		 3245 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3246 txq = netdev_get_tx_queue(odev, queue_map);
3247
3248 __netif_tx_lock_bh(txq);
5b8db2f5 3249
73466498 3250 if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
ef87979c 3251 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3252 pkt_dev->last_ok = 0;
3253 goto unlock;
3254 }
3255 atomic_inc(&(pkt_dev->skb->users));
3256 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3257
3258 switch (ret) {
3259 case NETDEV_TX_OK:
3260 txq_trans_update(txq);
3261 pkt_dev->last_ok = 1;
3262 pkt_dev->sofar++;
3263 pkt_dev->seq_num++;
baac8564 3264 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3265 break;
f466dba1
JF		 3266 case NET_XMIT_DROP:
3267 case NET_XMIT_CN:
3268 case NET_XMIT_POLICED:
3269 /* skb has been consumed */
3270 pkt_dev->errors++;
3271 break;
ef87979c 3272 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3273 net_info_ratelimited("%s xmit error: %d\n",
3274 pkt_dev->odevname, ret);
ef87979c
SH		 3275 pkt_dev->errors++;
3276 /* fallthru */
3277 case NETDEV_TX_LOCKED:
3278 case NETDEV_TX_BUSY:
3279 /* Retry it next time */
3280 atomic_dec(&(pkt_dev->skb->users));
3281 pkt_dev->last_ok = 0;
222f1806 3282 }
0835acfe 3283unlock:
fd2ea0a7 3284 __netif_tx_unlock_bh(txq);
222f1806 3285
1da177e4
LT		 3286 /* If pkt_dev->count is zero, then run forever */
3287 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3288 pktgen_wait_for_skb(pkt_dev);
222f1806 3289
1da177e4
LT		 3290 /* Done with this */
3291 pktgen_stop_device(pkt_dev);
222f1806 3292 }
222f1806 3293}
1da177e4 3294
4ec93edb 3295/*
1da177e4
LT		 3296 * Main loop of the thread goes here
3297 */
3298
ee74baa7 3299static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3300{
3301 DEFINE_WAIT(wait);
ee74baa7 3302 struct pktgen_thread *t = arg;
222f1806 3303 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3304 int cpu = t->cpu;
1da177e4 3305
ee74baa7 3306 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3307
3308 init_waitqueue_head(&t->queue);
d3ede327 3309 complete(&t->start_done);
1da177e4 3310
f9467eae 3311 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3312
ee74baa7 3313 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3314
83144186
RW		 3315 set_freezable();
3316
ee74baa7
DM		 3317 while (!kthread_should_stop()) {
3318 pkt_dev = next_to_run(t);
1da177e4 3319
ef87979c 3320 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3321 if (t->net->pktgen_exiting)
551eaff1 3322 break;
ef87979c
SH		 3323 wait_event_interruptible_timeout(t->queue,
3324 t->control != 0,
3325 HZ/10);
1b3f720b 3326 try_to_freeze();
ef87979c 3327 continue;
ee74baa7 3328 }
1da177e4 3329
ee74baa7 3330 __set_current_state(TASK_RUNNING);
222f1806 3331
ef87979c 3332 if (likely(pkt_dev)) {
1da177e4
LT		 3333 pktgen_xmit(pkt_dev);
3334
ef87979c
SH		 3335 if (need_resched())
3336 pktgen_resched(pkt_dev);
3337 else
3338 cpu_relax();
3339 }
3340
222f1806 3341 if (t->control & T_STOP) {
1da177e4
LT		 3342 pktgen_stop(t);
3343 t->control &= ~(T_STOP);
3344 }
3345
222f1806 3346 if (t->control & T_RUN) {
1da177e4
LT		 3347 pktgen_run(t);
3348 t->control &= ~(T_RUN);
3349 }
3350
222f1806 3351 if (t->control & T_REMDEVALL) {
1da177e4 3352 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3353 t->control &= ~(T_REMDEVALL);
3354 }
3355
222f1806 3356 if (t->control & T_REMDEV) {
95ed63f7 3357 pktgen_rem_one_if(t);
1da177e4
LT		 3358 t->control &= ~(T_REMDEV);
3359 }
3360
09fe3ef4
AM		 3361 try_to_freeze();
3362
ee74baa7 3363 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3364 }
1da177e4 3365
f9467eae 3366 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3367 pktgen_stop(t);
1da177e4 3368
f9467eae 3369 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3370 pktgen_rem_all_ifs(t);
1da177e4 3371
f9467eae 3372 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3373 pktgen_rem_thread(t);
cdcdbe0b 3374
551eaff1
ED		 3375 /* Wait for kthread_stop */
3376 while (!kthread_should_stop()) {
3377 set_current_state(TASK_INTERRUPTIBLE);
3378 schedule();
3379 }
3380 __set_current_state(TASK_RUNNING);
3381
ee74baa7 3382 return 0;
1da177e4
LT		 3383}
3384
222f1806 3385static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3386 const char *ifname, bool exact)
1da177e4 3387{
c26a8016 3388 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3389 size_t len = strlen(ifname);
222f1806 3390
3e984840 3391 if_lock(t);
c26a8016 3392 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3393 if (strncmp(p->odevname, ifname, len) == 0) {
3394 if (p->odevname[len]) {
3395 if (exact || p->odevname[len] != '@')
3396 continue;
3397 }
c26a8016 3398 pkt_dev = p;
222f1806
LC		 3399 break;
3400 }
222f1806
LC		 3401
3402 if_unlock(t);
f9467eae 3403 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3404 return pkt_dev;
1da177e4
LT		 3405}
3406
4ec93edb
YH		 3407/*
3408 * Adds a dev at front of if_list.
1da177e4
LT		 3409 */
3410
222f1806
LC		 3411static int add_dev_to_thread(struct pktgen_thread *t,
3412 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3413{
3414 int rv = 0;
222f1806
LC		 3415
3416 if_lock(t);
3417
3418 if (pkt_dev->pg_thread) {
f9467eae 3419 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3420 rv = -EBUSY;
3421 goto out;
3422 }
c26a8016
LC		 3423
3424 list_add(&pkt_dev->list, &t->if_list);
222f1806 3425 pkt_dev->pg_thread = t;
1da177e4
LT		 3426 pkt_dev->running = 0;
3427
222f1806
LC		 3428out:
3429 if_unlock(t);
3430 return rv;
1da177e4
LT		 3431}
3432
3433/* Called under thread lock */
3434
222f1806 3435static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3436{
222f1806 3437 struct pktgen_dev *pkt_dev;
39df232f 3438 int err;
3291b9db 3439 int node = cpu_to_node(t->cpu);
222f1806 3440
1da177e4
LT		 3441 /* We don't allow a device to be on several threads */
3442
4e58a027 3443 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3444 if (pkt_dev) {
f9467eae 3445 pr_err("ERROR: interface already used\n");
222f1806
LC		 3446 return -EBUSY;
3447 }
d50a6b56 3448
3291b9db 3449 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3450 if (!pkt_dev)
3451 return -ENOMEM;
3452
593f63b0 3453 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3454 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3455 node);
d50a6b56
SH		 3456 if (pkt_dev->flows == NULL) {
3457 kfree(pkt_dev);
3458 return -ENOMEM;
3459 }
d50a6b56 3460
95ed63f7 3461 pkt_dev->removal_mark = 0;
d50a6b56 3462 pkt_dev->nfrags = 0;
fd29cf72 3463 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3464 pkt_dev->count = pg_count_d;
3465 pkt_dev->sofar = 0;
222f1806 3466 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3467 pkt_dev->udp_src_max = 9;
3468 pkt_dev->udp_dst_min = 9;
3469 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3470 pkt_dev->vlan_p = 0;
3471 pkt_dev->vlan_cfi = 0;
3472 pkt_dev->vlan_id = 0xffff;
3473 pkt_dev->svlan_p = 0;
3474 pkt_dev->svlan_cfi = 0;
3475 pkt_dev->svlan_id = 0xffff;
e99b99b4 3476 pkt_dev->node = -1;
34954ddc 3477
4e58a027 3478 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3479 if (err)
3480 goto out1;
d8873315
NH		 3481 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3482 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3483
4e58a027 3484 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3485 &pktgen_if_fops, pkt_dev);
39df232f 3486 if (!pkt_dev->entry) {
f9467eae 3487 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3488 PG_PROC_DIR, ifname);
39df232f
SH		 3489 err = -EINVAL;
3490 goto out2;
d50a6b56 3491 }
a553e4a6
JHS		 3492#ifdef CONFIG_XFRM
3493 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3494 pkt_dev->ipsproto = IPPROTO_ESP;
3495#endif
d50a6b56
SH		 3496
3497 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3498out2:
3499 dev_put(pkt_dev->odev);
3500out1:
a553e4a6
JHS		 3501#ifdef CONFIG_XFRM
3502 free_SAs(pkt_dev);
3503#endif
1d0ebfe7 3504 vfree(pkt_dev->flows);
39df232f
SH		 3505 kfree(pkt_dev);
3506 return err;
1da177e4
LT		 3507}
3508
4e58a027 3509static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3510{
cdcdbe0b 3511 struct pktgen_thread *t;
d50a6b56 3512 struct proc_dir_entry *pe;
ee74baa7 3513 struct task_struct *p;
222f1806 3514
3291b9db
ED		 3515 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3516 cpu_to_node(cpu));
222f1806 3517 if (!t) {
f9467eae 3518 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3519 return -ENOMEM;
3520 }
3521
222f1806 3522 spin_lock_init(&t->if_lock);
1da177e4 3523 t->cpu = cpu;
222f1806 3524
ee74baa7
DM		 3525 INIT_LIST_HEAD(&t->if_list);
3526
4e58a027 3527 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3528 init_completion(&t->start_done);
ee74baa7 3529
94dcf29a
ED		 3530 p = kthread_create_on_node(pktgen_thread_worker,
3531 t,
3532 cpu_to_node(cpu),
3533 "kpktgend_%d", cpu);
ee74baa7 3534 if (IS_ERR(p)) {
f9467eae 3535 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3536 list_del(&t->th_list);
3537 kfree(t);
3538 return PTR_ERR(p);
3539 }
3540 kthread_bind(p, cpu);
3541 t->tsk = p;
3542
4e58a027 3543 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3544 &pktgen_thread_fops, t);
222f1806 3545 if (!pe) {
f9467eae 3546 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3547 PG_PROC_DIR, t->tsk->comm);
3548 kthread_stop(p);
3549 list_del(&t->th_list);
222f1806
LC		 3550 kfree(t);
3551 return -EINVAL;
3552 }
d50a6b56 3553
4e58a027 3554 t->net = pn;
ee74baa7 3555 wake_up_process(p);
d3ede327 3556 wait_for_completion(&t->start_done);
1da177e4
LT		 3557
3558 return 0;
3559}
3560
4ec93edb
YH		 3561/*
3562 * Removes a device from the thread if_list.
1da177e4 3563 */
222f1806
LC		 3564static void _rem_dev_from_if_list(struct pktgen_thread *t,
3565 struct pktgen_dev *pkt_dev)
1da177e4 3566{
c26a8016
LC		 3567 struct list_head *q, *n;
3568 struct pktgen_dev *p;
1da177e4 3569
c26a8016
LC		 3570 list_for_each_safe(q, n, &t->if_list) {
3571 p = list_entry(q, struct pktgen_dev, list);
3572 if (p == pkt_dev)
3573 list_del(&p->list);
1da177e4
LT		 3574 }
3575}
3576
222f1806
LC		 3577static int pktgen_remove_device(struct pktgen_thread *t,
3578 struct pktgen_dev *pkt_dev)
1da177e4 3579{
4e58a027 3580 struct pktgen_net *pn = t->net;
1da177e4 3581
f9467eae 3582 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3583
222f1806 3584 if (pkt_dev->running) {
f9467eae 3585 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3586 pktgen_stop_device(pkt_dev);
3587 }
3588
3589 /* Dis-associate from the interface */
1da177e4
LT		 3590
3591 if (pkt_dev->odev) {
3592 dev_put(pkt_dev->odev);
222f1806
LC		 3593 pkt_dev->odev = NULL;
3594 }
3595
1da177e4
LT		 3596 /* And update the thread if_list */
3597
3598 _rem_dev_from_if_list(t, pkt_dev);
3599
39df232f 3600 if (pkt_dev->entry)
4e58a027 3601 remove_proc_entry(pkt_dev->entry->name, pn->proc_dir);
1da177e4 3602
a553e4a6
JHS		 3603#ifdef CONFIG_XFRM
3604 free_SAs(pkt_dev);
3605#endif
1d0ebfe7 3606 vfree(pkt_dev->flows);
26ad7879
ED		 3607 if (pkt_dev->page)
3608 put_page(pkt_dev->page);
1da177e4 3609 kfree(pkt_dev);
222f1806 3610 return 0;
1da177e4
LT		 3611}
3612
4e58a027 3613static int __net_init pg_net_init(struct net *net)
1da177e4 3614{
4e58a027 3615 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3616 struct proc_dir_entry *pe;
4e58a027
CW		 3617 int cpu, ret = 0;
3618
3619 pn->net = net;
3620 INIT_LIST_HEAD(&pn->pktgen_threads);
3621 pn->pktgen_exiting = false;
3622 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3623 if (!pn->proc_dir) {
3624 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3625 return -ENODEV;
4e58a027
CW		 3626 }
3627 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3628 if (pe == NULL) {
4e58a027 3629 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3630 ret = -EINVAL;
4e58a027 3631 goto remove;
222f1806 3632 }
1da177e4 3633
670c02c2 3634 for_each_online_cpu(cpu) {
8024bb24 3635 int err;
1da177e4 3636
4e58a027 3637 err = pktgen_create_thread(cpu, pn);
8024bb24 3638 if (err)
4e58a027 3639 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3640 cpu, err);
222f1806 3641 }
8024bb24 3642
4e58a027
CW		 3643 if (list_empty(&pn->pktgen_threads)) {
3644 pr_err("Initialization failed for all threads\n");
ce14f894 3645 ret = -ENODEV;
4e58a027 3646 goto remove_entry;
8024bb24
LC		 3647 }
3648
222f1806 3649 return 0;
ce14f894 3650
4e58a027
CW		 3651remove_entry:
3652 remove_proc_entry(PGCTRL, pn->proc_dir);
3653remove:
ece31ffd 3654 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3655 return ret;
1da177e4
LT		 3656}
3657
4e58a027 3658static void __net_exit pg_net_exit(struct net *net)
1da177e4 3659{
4e58a027 3660 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3661 struct pktgen_thread *t;
3662 struct list_head *q, *n;
d4b11335 3663 LIST_HEAD(list);
1da177e4 3664
222f1806 3665 /* Stop all interfaces & threads */
4e58a027 3666 pn->pktgen_exiting = true;
1da177e4 3667
c57b5468 3668 mutex_lock(&pktgen_thread_lock);
4e58a027 3669 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3670 mutex_unlock(&pktgen_thread_lock);
3671
3672 list_for_each_safe(q, n, &list) {
cdcdbe0b 3673 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3674 list_del(&t->th_list);
ee74baa7
DM		 3675 kthread_stop(t->tsk);
3676 kfree(t);
222f1806 3677 }
1da177e4 3678
4e58a027 3679 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3680 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3681}
3682
3683static struct pernet_operations pg_net_ops = {
3684 .init = pg_net_init,
3685 .exit = pg_net_exit,
3686 .id = &pg_net_id,
3687 .size = sizeof(struct pktgen_net),
3688};
3689
3690static int __init pg_init(void)
3691{
3692 int ret = 0;
1da177e4 3693
4e58a027
CW		 3694 pr_info("%s", version);
3695 ret = register_pernet_subsys(&pg_net_ops);
3696 if (ret)
3697 return ret;
3698 ret = register_netdevice_notifier(&pktgen_notifier_block);
3699 if (ret)
3700 unregister_pernet_subsys(&pg_net_ops);
3701
3702 return ret;
3703}
3704
3705static void __exit pg_cleanup(void)
3706{
3707 unregister_netdevice_notifier(&pktgen_notifier_block);
3708 unregister_pernet_subsys(&pg_net_ops);
1da177e4
LT		 3709}
3710
1da177e4
LT		 3711module_init(pg_init);
3712module_exit(pg_cleanup);
3713
c3d2f52d 3714MODULE_AUTHOR("Robert Olsson <[email protected]>");
1da177e4
LT		 3715MODULE_DESCRIPTION("Packet Generator tool");
3716MODULE_LICENSE("GPL");
c3d2f52d 3717MODULE_VERSION(VERSION);
1da177e4 3718module_param(pg_count_d, int, 0);
c3d2f52d 3719MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3720module_param(pg_delay_d, int, 0);
c3d2f52d 3721MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3722module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3723MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3724module_param(debug, int, 0);
c3d2f52d 3725MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
Empty description
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