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1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
268bb0ce 159#include <linux/prefetch.h>
457c4cbc 160#include <net/net_namespace.h>
1da177e4
LT		 161#include <net/checksum.h>
162#include <net/ipv6.h>
163#include <net/addrconf.h>
a553e4a6
JHS		 164#ifdef CONFIG_XFRM
165#include <net/xfrm.h>
166#endif
1da177e4
LT		 167#include <asm/byteorder.h>
168#include <linux/rcupdate.h>
1977f032 169#include <linux/bitops.h>
63adc6fb
SH		 170#include <linux/io.h>
171#include <linux/timex.h>
172#include <linux/uaccess.h>
1da177e4 173#include <asm/dma.h>
222f1806 174#include <asm/div64.h> /* do_div */
1da177e4 175
43d28b65 176#define VERSION "2.74"
1da177e4 177#define IP_NAME_SZ 32
ca6549af 178#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 179#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 180
f9467eae
JP		 181#define func_enter() pr_debug("entering %s\n", __func__);
182
1da177e4 183/* Device flag bits */
222f1806
LC		 184#define F_IPSRC_RND (1<<0) /* IP-Src Random */
185#define F_IPDST_RND (1<<1) /* IP-Dst Random */
186#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
187#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
188#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
189#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
190#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
191#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 192#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 193#define F_VID_RND (1<<9) /* Random VLAN ID */
194#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 195#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 196#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 197#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 198#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 199#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 200
201/* Thread control flag bits */
6b80d6a6
SH		 202#define T_STOP (1<<0) /* Stop run */
203#define T_RUN (1<<1) /* Start run */
204#define T_REMDEVALL (1<<2) /* Remove all devs */
205#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 206
1da177e4
LT		 207/* If lock -- can be removed after some work */
208#define if_lock(t) spin_lock(&(t->if_lock));
209#define if_unlock(t) spin_unlock(&(t->if_lock));
210
211/* Used to help with determining the pkts on receive */
212#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 213#define PG_PROC_DIR "pktgen"
214#define PGCTRL "pgctrl"
63adc6fb 215static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 216
217#define MAX_CFLOWS 65536
218
34954ddc
FF		 219#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
220#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
221
222f1806 222struct flow_state {
252e3346 223 __be32 cur_daddr;
222f1806 224 int count;
a553e4a6
JHS		 225#ifdef CONFIG_XFRM
226 struct xfrm_state *x;
227#endif
007a531b 228 __u32 flags;
1da177e4
LT		 229};
230
007a531b
JHS		 231/* flow flag bits */
232#define F_INIT (1<<0) /* flow has been initialized */
233
1da177e4 234struct pktgen_dev {
1da177e4
LT		 235 /*
236 * Try to keep frequent/infrequent used vars. separated.
237 */
39df232f
SH		 238 struct proc_dir_entry *entry; /* proc file */
239 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 240 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 241
63adc6fb 242 int running; /* if false, the test will stop */
1da177e4 243
222f1806
LC		 244 /* If min != max, then we will either do a linear iteration, or
245 * we will do a random selection from within the range.
246 */
247 __u32 flags;
95ed63f7
AK		 248 int removal_mark; /* non-zero => the device is marked for
249 * removal by worker thread */
1da177e4 250
68bf9f0b
AW		 251 int min_pkt_size;
252 int max_pkt_size;
16dab72f 253 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 254 int nfrags;
26ad7879 255 struct page *page;
fd29cf72
SH		 256 u64 delay; /* nano-seconds */
257
222f1806
LC		 258 __u64 count; /* Default No packets to send */
259 __u64 sofar; /* How many pkts we've sent so far */
260 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 261 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 262
263 /* runtime counters relating to clone_skb */
222f1806
LC		 264
265 __u64 allocated_skbs;
266 __u32 clone_count;
267 int last_ok; /* Was last skb sent?
63adc6fb
SH		 268 * Or a failed transmit of some sort?
269 * This will keep sequence numbers in order
222f1806 270 */
fd29cf72
SH		 271 ktime_t next_tx;
272 ktime_t started_at;
273 ktime_t stopped_at;
274 u64 idle_acc; /* nano-seconds */
275
222f1806
LC		 276 __u32 seq_num;
277
63adc6fb
SH		 278 int clone_skb; /*
279 * Use multiple SKBs during packet gen.
280 * If this number is greater than 1, then
281 * that many copies of the same packet will be
282 * sent before a new packet is allocated.
283 * If you want to send 1024 identical packets
284 * before creating a new packet,
285 * set clone_skb to 1024.
222f1806
LC		 286 */
287
288 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
291 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
292
293 struct in6_addr in6_saddr;
294 struct in6_addr in6_daddr;
295 struct in6_addr cur_in6_daddr;
296 struct in6_addr cur_in6_saddr;
1da177e4 297 /* For ranges */
222f1806
LC		 298 struct in6_addr min_in6_daddr;
299 struct in6_addr max_in6_daddr;
300 struct in6_addr min_in6_saddr;
301 struct in6_addr max_in6_saddr;
302
303 /* If we're doing ranges, random or incremental, then this
304 * defines the min/max for those ranges.
305 */
252e3346
AV		 306 __be32 saddr_min; /* inclusive, source IP address */
307 __be32 saddr_max; /* exclusive, source IP address */
308 __be32 daddr_min; /* inclusive, dest IP address */
309 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 310
311 __u16 udp_src_min; /* inclusive, source UDP port */
312 __u16 udp_src_max; /* exclusive, source UDP port */
313 __u16 udp_dst_min; /* inclusive, dest UDP port */
314 __u16 udp_dst_max; /* exclusive, dest UDP port */
315
1ca7768c 316 /* DSCP + ECN */
63adc6fb
SH		 317 __u8 tos; /* six MSB of (former) IPv4 TOS
318 are for dscp codepoint */
319 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
320 (see RFC 3260, sec. 4) */
1ca7768c 321
ca6549af 322 /* MPLS */
95c96174 323 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 324 __be32 labels[MAX_MPLS_LABELS];
325
34954ddc
FF		 326 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
327 __u8 vlan_p;
328 __u8 vlan_cfi;
329 __u16 vlan_id; /* 0xffff means no vlan tag */
330
331 __u8 svlan_p;
332 __u8 svlan_cfi;
333 __u16 svlan_id; /* 0xffff means no svlan tag */
334
222f1806
LC		 335 __u32 src_mac_count; /* How many MACs to iterate through */
336 __u32 dst_mac_count; /* How many MACs to iterate through */
337
338 unsigned char dst_mac[ETH_ALEN];
339 unsigned char src_mac[ETH_ALEN];
340
341 __u32 cur_dst_mac_offset;
342 __u32 cur_src_mac_offset;
252e3346
AV		 343 __be32 cur_saddr;
344 __be32 cur_daddr;
66ed1e5e 345 __u16 ip_id;
222f1806
LC		 346 __u16 cur_udp_dst;
347 __u16 cur_udp_src;
45b270f8 348 __u16 cur_queue_map;
222f1806 349 __u32 cur_pkt_size;
baac8564 350 __u32 last_pkt_size;
222f1806
LC		 351
352 __u8 hh[14];
353 /* = {
354 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
355
356 We fill in SRC address later
357 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
358 0x08, 0x00
359 };
360 */
361 __u16 pad; /* pad out the hh struct to an even 16 bytes */
362
63adc6fb 363 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 364 * are transmitting the same one multiple times
365 */
63adc6fb
SH		 366 struct net_device *odev; /* The out-going device.
367 * Note that the device should have it's
368 * pg_info pointer pointing back to this
369 * device.
370 * Set when the user specifies the out-going
371 * device name (not when the inject is
372 * started as it used to do.)
373 */
593f63b0 374 char odevname[32];
1da177e4 375 struct flow_state *flows;
95c96174
ED		 376 unsigned int cflows; /* Concurrent flows (config) */
377 unsigned int lflow; /* Flow length (config) */
378 unsigned int nflows; /* accumulated flows (stats) */
379 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 380
381 u16 queue_map_min;
382 u16 queue_map_max;
9e50e3ac 383 __u32 skb_priority; /* skb priority field */
e99b99b4 384 int node; /* Memory node */
45b270f8 385
a553e4a6
JHS		 386#ifdef CONFIG_XFRM
387 __u8 ipsmode; /* IPSEC mode (config) */
388 __u8 ipsproto; /* IPSEC type (config) */
389#endif
39df232f 390 char result[512];
1da177e4
LT		 391};
392
393struct pktgen_hdr {
252e3346
AV		 394 __be32 pgh_magic;
395 __be32 seq_num;
396 __be32 tv_sec;
397 __be32 tv_usec;
1da177e4
LT		 398};
399
551eaff1
ED		 400static bool pktgen_exiting __read_mostly;
401
1da177e4 402struct pktgen_thread {
63adc6fb 403 spinlock_t if_lock; /* for list of devices */
c26a8016 404 struct list_head if_list; /* All device here */
cdcdbe0b 405 struct list_head th_list;
ee74baa7 406 struct task_struct *tsk;
222f1806 407 char result[512];
222f1806 408
63adc6fb
SH		 409 /* Field for thread to receive "posted" events terminate,
410 stop ifs etc. */
222f1806
LC		 411
412 u32 control;
1da177e4
LT		 413 int cpu;
414
222f1806 415 wait_queue_head_t queue;
d3ede327 416 struct completion start_done;
1da177e4
LT		 417};
418
419#define REMOVE 1
420#define FIND 0
421
fd29cf72 422static inline ktime_t ktime_now(void)
1da177e4 423{
fd29cf72
SH		 424 struct timespec ts;
425 ktime_get_ts(&ts);
426
427 return timespec_to_ktime(ts);
1da177e4
LT		 428}
429
fd29cf72
SH		 430/* This works even if 32 bit because of careful byte order choice */
431static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 432{
fd29cf72 433 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 434}
435
c3d2f52d 436static const char version[] =
f9467eae
JP		 437 "Packet Generator for packet performance testing. "
438 "Version: " VERSION "\n";
1da177e4 439
222f1806
LC		 440static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
441static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
442static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 443 const char *ifname, bool exact);
1da177e4
LT		 444static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
445static void pktgen_run_all_threads(void);
eb37b41c 446static void pktgen_reset_all_threads(void);
1da177e4 447static void pktgen_stop_all_threads_ifs(void);
3bda06a3 448
222f1806 449static void pktgen_stop(struct pktgen_thread *t);
1da177e4 450static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 451
1da177e4 452/* Module parameters, defaults. */
65c5b786
SH		 453static int pg_count_d __read_mostly = 1000;
454static int pg_delay_d __read_mostly;
455static int pg_clone_skb_d __read_mostly;
456static int debug __read_mostly;
1da177e4 457
222fa076 458static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 459static LIST_HEAD(pktgen_threads);
1da177e4 460
1da177e4
LT		 461static struct notifier_block pktgen_notifier_block = {
462 .notifier_call = pktgen_device_event,
463};
464
1da177e4 465/*
4ec93edb 466 * /proc handling functions
1da177e4
LT		 467 *
468 */
469
d50a6b56 470static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 471{
c3d2f52d 472 seq_puts(seq, version);
d50a6b56 473 return 0;
1da177e4
LT		 474}
475
63adc6fb
SH		 476static ssize_t pgctrl_write(struct file *file, const char __user *buf,
477 size_t count, loff_t *ppos)
1da177e4 478{
1da177e4 479 int err = 0;
d50a6b56 480 char data[128];
1da177e4 481
222f1806
LC		 482 if (!capable(CAP_NET_ADMIN)) {
483 err = -EPERM;
1da177e4 484 goto out;
222f1806 485 }
1da177e4 486
d50a6b56
SH		 487 if (count > sizeof(data))
488 count = sizeof(data);
1da177e4 489
1da177e4 490 if (copy_from_user(data, buf, count)) {
b4099fab 491 err = -EFAULT;
d50a6b56 492 goto out;
222f1806
LC		 493 }
494 data[count - 1] = 0; /* Make string */
1da177e4 495
222f1806 496 if (!strcmp(data, "stop"))
1da177e4
LT		 497 pktgen_stop_all_threads_ifs();
498
222f1806 499 else if (!strcmp(data, "start"))
1da177e4
LT		 500 pktgen_run_all_threads();
501
eb37b41c
JB		 502 else if (!strcmp(data, "reset"))
503 pktgen_reset_all_threads();
504
222f1806 505 else
f9467eae 506 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 507
508 err = count;
509
222f1806
LC		 510out:
511 return err;
1da177e4
LT		 512}
513
d50a6b56
SH		 514static int pgctrl_open(struct inode *inode, struct file *file)
515{
516 return single_open(file, pgctrl_show, PDE(inode)->data);
517}
518
9a32144e 519static const struct file_operations pktgen_fops = {
222f1806
LC		 520 .owner = THIS_MODULE,
521 .open = pgctrl_open,
522 .read = seq_read,
523 .llseek = seq_lseek,
524 .write = pgctrl_write,
525 .release = single_release,
d50a6b56
SH		 526};
527
528static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 529{
648fda74 530 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 531 ktime_t stopped;
532 u64 idle;
222f1806
LC		 533
534 seq_printf(seq,
535 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
536 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
537 pkt_dev->max_pkt_size);
538
539 seq_printf(seq,
fd29cf72
SH		 540 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
541 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 542 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 543
544 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
545 pkt_dev->lflow);
546
45b270f8
RO		 547 seq_printf(seq,
548 " queue_map_min: %u queue_map_max: %u\n",
549 pkt_dev->queue_map_min,
550 pkt_dev->queue_map_max);
551
9e50e3ac
JF		 552 if (pkt_dev->skb_priority)
553 seq_printf(seq, " skb_priority: %u\n",
554 pkt_dev->skb_priority);
555
222f1806 556 if (pkt_dev->flags & F_IPV6) {
222f1806 557 seq_printf(seq,
47a0200d
AD		 558 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
559 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
560 &pkt_dev->in6_saddr,
561 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
562 &pkt_dev->in6_daddr,
563 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 564 } else {
565 seq_printf(seq,
566 " dst_min: %s dst_max: %s\n",
567 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 568 seq_printf(seq,
63adc6fb
SH		 569 " src_min: %s src_max: %s\n",
570 pkt_dev->src_min, pkt_dev->src_max);
571 }
1da177e4 572
222f1806 573 seq_puts(seq, " src_mac: ");
1da177e4 574
e174961c
JB		 575 seq_printf(seq, "%pM ",
576 is_zero_ether_addr(pkt_dev->src_mac) ?
577 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 578
579 seq_printf(seq, "dst_mac: ");
e174961c 580 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 581
582 seq_printf(seq,
63adc6fb
SH		 583 " udp_src_min: %d udp_src_max: %d"
584 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 585 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
586 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
587
588 seq_printf(seq,
ca6549af 589 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 590 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 591
ca6549af 592 if (pkt_dev->nr_labels) {
95c96174 593 unsigned int i;
ca6549af 594 seq_printf(seq, " mpls: ");
e71a4783 595 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 596 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
597 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
598 }
599
63adc6fb 600 if (pkt_dev->vlan_id != 0xffff)
34954ddc 601 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 602 pkt_dev->vlan_id, pkt_dev->vlan_p,
603 pkt_dev->vlan_cfi);
34954ddc 604
63adc6fb 605 if (pkt_dev->svlan_id != 0xffff)
34954ddc 606 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 607 pkt_dev->svlan_id, pkt_dev->svlan_p,
608 pkt_dev->svlan_cfi);
34954ddc 609
63adc6fb 610 if (pkt_dev->tos)
1ca7768c 611 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 612
63adc6fb 613 if (pkt_dev->traffic_class)
1ca7768c 614 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 615
e99b99b4
RO		 616 if (pkt_dev->node >= 0)
617 seq_printf(seq, " node: %d\n", pkt_dev->node);
618
ca6549af
SW		 619 seq_printf(seq, " Flags: ");
620
222f1806
LC		 621 if (pkt_dev->flags & F_IPV6)
622 seq_printf(seq, "IPV6 ");
1da177e4 623
222f1806
LC		 624 if (pkt_dev->flags & F_IPSRC_RND)
625 seq_printf(seq, "IPSRC_RND ");
1da177e4 626
222f1806
LC		 627 if (pkt_dev->flags & F_IPDST_RND)
628 seq_printf(seq, "IPDST_RND ");
1da177e4 629
222f1806
LC		 630 if (pkt_dev->flags & F_TXSIZE_RND)
631 seq_printf(seq, "TXSIZE_RND ");
1da177e4 632
222f1806
LC		 633 if (pkt_dev->flags & F_UDPSRC_RND)
634 seq_printf(seq, "UDPSRC_RND ");
1da177e4 635
222f1806
LC		 636 if (pkt_dev->flags & F_UDPDST_RND)
637 seq_printf(seq, "UDPDST_RND ");
1da177e4 638
ca6549af
SW		 639 if (pkt_dev->flags & F_MPLS_RND)
640 seq_printf(seq, "MPLS_RND ");
641
45b270f8
RO		 642 if (pkt_dev->flags & F_QUEUE_MAP_RND)
643 seq_printf(seq, "QUEUE_MAP_RND ");
644
e6fce5b9
RO		 645 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
646 seq_printf(seq, "QUEUE_MAP_CPU ");
647
007a531b
JHS		 648 if (pkt_dev->cflows) {
649 if (pkt_dev->flags & F_FLOW_SEQ)
650 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
651 else
652 seq_printf(seq, "FLOW_RND ");
653 }
654
a553e4a6
JHS		 655#ifdef CONFIG_XFRM
656 if (pkt_dev->flags & F_IPSEC_ON)
657 seq_printf(seq, "IPSEC ");
658#endif
659
222f1806
LC		 660 if (pkt_dev->flags & F_MACSRC_RND)
661 seq_printf(seq, "MACSRC_RND ");
1da177e4 662
222f1806
LC		 663 if (pkt_dev->flags & F_MACDST_RND)
664 seq_printf(seq, "MACDST_RND ");
1da177e4 665
34954ddc
FF		 666 if (pkt_dev->flags & F_VID_RND)
667 seq_printf(seq, "VID_RND ");
668
669 if (pkt_dev->flags & F_SVID_RND)
670 seq_printf(seq, "SVID_RND ");
671
e99b99b4
RO		 672 if (pkt_dev->flags & F_NODE)
673 seq_printf(seq, "NODE_ALLOC ");
674
222f1806
LC		 675 seq_puts(seq, "\n");
676
fd29cf72
SH		 677 /* not really stopped, more like last-running-at */
678 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
679 idle = pkt_dev->idle_acc;
680 do_div(idle, NSEC_PER_USEC);
1da177e4 681
222f1806 682 seq_printf(seq,
fd29cf72 683 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 684 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 685 (unsigned long long)pkt_dev->errors);
686
687 seq_printf(seq,
688 " started: %lluus stopped: %lluus idle: %lluus\n",
689 (unsigned long long) ktime_to_us(pkt_dev->started_at),
690 (unsigned long long) ktime_to_us(stopped),
691 (unsigned long long) idle);
1da177e4 692
222f1806
LC		 693 seq_printf(seq,
694 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 695 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
696 pkt_dev->cur_src_mac_offset);
1da177e4 697
222f1806 698 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 699 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
700 &pkt_dev->cur_in6_saddr,
701 &pkt_dev->cur_in6_daddr);
222f1806 702 } else
0373a946
AW		 703 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
704 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 705
222f1806 706 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 707 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 708
45b270f8
RO		 709 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
710
222f1806 711 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 712
713 if (pkt_dev->result[0])
222f1806 714 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 715 else
222f1806 716 seq_printf(seq, "Result: Idle\n");
1da177e4 717
d50a6b56 718 return 0;
1da177e4
LT		 719}
720
ca6549af 721
63adc6fb
SH		 722static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
723 __u32 *num)
ca6549af
SW		 724{
725 int i = 0;
726 *num = 0;
727
e71a4783 728 for (; i < maxlen; i++) {
82fd5b5d 729 int value;
ca6549af
SW		 730 char c;
731 *num <<= 4;
732 if (get_user(c, &user_buffer[i]))
733 return -EFAULT;
82fd5b5d
AS		 734 value = hex_to_bin(c);
735 if (value >= 0)
736 *num |= value;
ca6549af
SW		 737 else
738 break;
739 }
740 return i;
741}
742
222f1806
LC		 743static int count_trail_chars(const char __user * user_buffer,
744 unsigned int maxlen)
1da177e4
LT		 745{
746 int i;
747
748 for (i = 0; i < maxlen; i++) {
222f1806
LC		 749 char c;
750 if (get_user(c, &user_buffer[i]))
751 return -EFAULT;
752 switch (c) {
1da177e4
LT		 753 case '\"':
754 case '\n':
755 case '\r':
756 case '\t':
757 case ' ':
758 case '=':
759 break;
760 default:
761 goto done;
3ff50b79 762 }
1da177e4
LT		 763 }
764done:
765 return i;
766}
767
bf0813bd
PG		 768static long num_arg(const char __user *user_buffer, unsigned long maxlen,
769 unsigned long *num)
1da177e4 770{
d6182223 771 int i;
1da177e4 772 *num = 0;
222f1806 773
d6182223 774 for (i = 0; i < maxlen; i++) {
222f1806
LC		 775 char c;
776 if (get_user(c, &user_buffer[i]))
777 return -EFAULT;
778 if ((c >= '0') && (c <= '9')) {
1da177e4 779 *num *= 10;
222f1806 780 *num += c - '0';
1da177e4
LT		 781 } else
782 break;
783 }
784 return i;
785}
786
222f1806 787static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 788{
d6182223 789 int i;
1da177e4 790
d6182223 791 for (i = 0; i < maxlen; i++) {
222f1806
LC		 792 char c;
793 if (get_user(c, &user_buffer[i]))
794 return -EFAULT;
795 switch (c) {
1da177e4
LT		 796 case '\"':
797 case '\n':
798 case '\r':
799 case '\t':
800 case ' ':
801 goto done_str;
802 break;
803 default:
804 break;
3ff50b79 805 }
1da177e4
LT		 806 }
807done_str:
1da177e4
LT		 808 return i;
809}
810
ca6549af
SW		 811static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
812{
95c96174 813 unsigned int n = 0;
ca6549af
SW		 814 char c;
815 ssize_t i = 0;
816 int len;
817
818 pkt_dev->nr_labels = 0;
819 do {
820 __u32 tmp;
1ca7768c 821 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 822 if (len <= 0)
823 return len;
824 pkt_dev->labels[n] = htonl(tmp);
825 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
826 pkt_dev->flags |= F_MPLS_RND;
827 i += len;
828 if (get_user(c, &buffer[i]))
829 return -EFAULT;
830 i++;
831 n++;
832 if (n >= MAX_MPLS_LABELS)
833 return -E2BIG;
e71a4783 834 } while (c == ',');
ca6549af
SW		 835
836 pkt_dev->nr_labels = n;
837 return i;
838}
839
222f1806
LC		 840static ssize_t pktgen_if_write(struct file *file,
841 const char __user * user_buffer, size_t count,
842 loff_t * offset)
1da177e4 843{
8a994a71 844 struct seq_file *seq = file->private_data;
222f1806 845 struct pktgen_dev *pkt_dev = seq->private;
d6182223 846 int i, max, len;
1da177e4
LT		 847 char name[16], valstr[32];
848 unsigned long value = 0;
222f1806
LC		 849 char *pg_result = NULL;
850 int tmp = 0;
1da177e4 851 char buf[128];
222f1806
LC		 852
853 pg_result = &(pkt_dev->result[0]);
854
1da177e4 855 if (count < 1) {
f9467eae 856 pr_warning("wrong command format\n");
1da177e4
LT		 857 return -EINVAL;
858 }
222f1806 859
d6182223
PG		 860 max = count;
861 tmp = count_trail_chars(user_buffer, max);
222f1806 862 if (tmp < 0) {
f9467eae 863 pr_warning("illegal format\n");
222f1806 864 return tmp;
1da177e4 865 }
d6182223 866 i = tmp;
222f1806 867
1da177e4
LT		 868 /* Read variable name */
869
870 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 871 if (len < 0)
222f1806 872 return len;
63adc6fb 873
1da177e4 874 memset(name, 0, sizeof(name));
222f1806 875 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 876 return -EFAULT;
877 i += len;
222f1806
LC		 878
879 max = count - i;
1da177e4 880 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 881 if (len < 0)
882 return len;
883
1da177e4
LT		 884 i += len;
885
886 if (debug) {
86c2c0a8 887 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 888 char tb[copy + 1];
889 if (copy_from_user(tb, user_buffer, copy))
1da177e4 890 return -EFAULT;
448d7b5d 891 tb[copy] = 0;
f342cda7
JP		 892 pr_debug("%s,%lu buffer -:%s:-\n",
893 name, (unsigned long)count, tb);
222f1806 894 }
1da177e4
LT		 895
896 if (!strcmp(name, "min_pkt_size")) {
897 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 898 if (len < 0)
222f1806 899 return len;
63adc6fb 900
1da177e4 901 i += len;
222f1806
LC		 902 if (value < 14 + 20 + 8)
903 value = 14 + 20 + 8;
904 if (value != pkt_dev->min_pkt_size) {
905 pkt_dev->min_pkt_size = value;
906 pkt_dev->cur_pkt_size = value;
907 }
908 sprintf(pg_result, "OK: min_pkt_size=%u",
909 pkt_dev->min_pkt_size);
1da177e4
LT		 910 return count;
911 }
912
222f1806 913 if (!strcmp(name, "max_pkt_size")) {
1da177e4 914 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 915 if (len < 0)
222f1806 916 return len;
63adc6fb 917
1da177e4 918 i += len;
222f1806
LC		 919 if (value < 14 + 20 + 8)
920 value = 14 + 20 + 8;
921 if (value != pkt_dev->max_pkt_size) {
922 pkt_dev->max_pkt_size = value;
923 pkt_dev->cur_pkt_size = value;
924 }
925 sprintf(pg_result, "OK: max_pkt_size=%u",
926 pkt_dev->max_pkt_size);
1da177e4
LT		 927 return count;
928 }
929
222f1806 930 /* Shortcut for min = max */
1da177e4
LT		 931
932 if (!strcmp(name, "pkt_size")) {
933 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 934 if (len < 0)
222f1806 935 return len;
63adc6fb 936
1da177e4 937 i += len;
222f1806
LC		 938 if (value < 14 + 20 + 8)
939 value = 14 + 20 + 8;
940 if (value != pkt_dev->min_pkt_size) {
941 pkt_dev->min_pkt_size = value;
942 pkt_dev->max_pkt_size = value;
943 pkt_dev->cur_pkt_size = value;
944 }
1da177e4
LT		 945 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
946 return count;
947 }
948
222f1806 949 if (!strcmp(name, "debug")) {
1da177e4 950 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 951 if (len < 0)
222f1806 952 return len;
63adc6fb 953
1da177e4 954 i += len;
222f1806 955 debug = value;
1da177e4
LT		 956 sprintf(pg_result, "OK: debug=%u", debug);
957 return count;
958 }
959
222f1806 960 if (!strcmp(name, "frags")) {
1da177e4 961 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 962 if (len < 0)
222f1806 963 return len;
63adc6fb 964
1da177e4
LT		 965 i += len;
966 pkt_dev->nfrags = value;
967 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
968 return count;
969 }
970 if (!strcmp(name, "delay")) {
971 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 972 if (len < 0)
222f1806 973 return len;
63adc6fb 974
1da177e4 975 i += len;
fd29cf72
SH		 976 if (value == 0x7FFFFFFF)
977 pkt_dev->delay = ULLONG_MAX;
978 else
9240d715 979 pkt_dev->delay = (u64)value;
fd29cf72
SH		 980
981 sprintf(pg_result, "OK: delay=%llu",
982 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 983 return count;
984 }
43d28b65
DT		 985 if (!strcmp(name, "rate")) {
986 len = num_arg(&user_buffer[i], 10, &value);
987 if (len < 0)
988 return len;
989
990 i += len;
991 if (!value)
992 return len;
993 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
994 if (debug)
f9467eae 995 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 996
997 sprintf(pg_result, "OK: rate=%lu", value);
998 return count;
999 }
1000 if (!strcmp(name, "ratep")) {
1001 len = num_arg(&user_buffer[i], 10, &value);
1002 if (len < 0)
1003 return len;
1004
1005 i += len;
1006 if (!value)
1007 return len;
1008 pkt_dev->delay = NSEC_PER_SEC/value;
1009 if (debug)
f9467eae 1010 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1011
1012 sprintf(pg_result, "OK: rate=%lu", value);
1013 return count;
1014 }
222f1806 1015 if (!strcmp(name, "udp_src_min")) {
1da177e4 1016 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1017 if (len < 0)
222f1806 1018 return len;
63adc6fb 1019
1da177e4 1020 i += len;
222f1806
LC		 1021 if (value != pkt_dev->udp_src_min) {
1022 pkt_dev->udp_src_min = value;
1023 pkt_dev->cur_udp_src = value;
1024 }
1da177e4
LT		 1025 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1026 return count;
1027 }
222f1806 1028 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1029 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1030 if (len < 0)
222f1806 1031 return len;
63adc6fb 1032
1da177e4 1033 i += len;
222f1806
LC		 1034 if (value != pkt_dev->udp_dst_min) {
1035 pkt_dev->udp_dst_min = value;
1036 pkt_dev->cur_udp_dst = value;
1037 }
1da177e4
LT		 1038 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1039 return count;
1040 }
222f1806 1041 if (!strcmp(name, "udp_src_max")) {
1da177e4 1042 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1043 if (len < 0)
222f1806 1044 return len;
63adc6fb 1045
1da177e4 1046 i += len;
222f1806
LC		 1047 if (value != pkt_dev->udp_src_max) {
1048 pkt_dev->udp_src_max = value;
1049 pkt_dev->cur_udp_src = value;
1050 }
1da177e4
LT		 1051 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1052 return count;
1053 }
222f1806 1054 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1055 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1056 if (len < 0)
222f1806 1057 return len;
63adc6fb 1058
1da177e4 1059 i += len;
222f1806
LC		 1060 if (value != pkt_dev->udp_dst_max) {
1061 pkt_dev->udp_dst_max = value;
1062 pkt_dev->cur_udp_dst = value;
1063 }
1da177e4
LT		 1064 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1065 return count;
1066 }
1067 if (!strcmp(name, "clone_skb")) {
1068 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1069 if (len < 0)
222f1806 1070 return len;
d8873315
NH		 1071 if ((value > 0) &&
1072 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1073 return -ENOTSUPP;
1da177e4 1074 i += len;
222f1806
LC		 1075 pkt_dev->clone_skb = value;
1076
1da177e4
LT		 1077 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1078 return count;
1079 }
1080 if (!strcmp(name, "count")) {
1081 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1082 if (len < 0)
222f1806 1083 return len;
63adc6fb 1084
1da177e4
LT		 1085 i += len;
1086 pkt_dev->count = value;
1087 sprintf(pg_result, "OK: count=%llu",
222f1806 1088 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1089 return count;
1090 }
1091 if (!strcmp(name, "src_mac_count")) {
1092 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1093 if (len < 0)
222f1806 1094 return len;
63adc6fb 1095
1da177e4
LT		 1096 i += len;
1097 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1098 pkt_dev->src_mac_count = value;
1099 pkt_dev->cur_src_mac_offset = 0;
1100 }
1101 sprintf(pg_result, "OK: src_mac_count=%d",
1102 pkt_dev->src_mac_count);
1da177e4
LT		 1103 return count;
1104 }
1105 if (!strcmp(name, "dst_mac_count")) {
1106 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1107 if (len < 0)
222f1806 1108 return len;
63adc6fb 1109
1da177e4
LT		 1110 i += len;
1111 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1112 pkt_dev->dst_mac_count = value;
1113 pkt_dev->cur_dst_mac_offset = 0;
1114 }
1115 sprintf(pg_result, "OK: dst_mac_count=%d",
1116 pkt_dev->dst_mac_count);
1da177e4
LT		 1117 return count;
1118 }
e99b99b4
RO		 1119 if (!strcmp(name, "node")) {
1120 len = num_arg(&user_buffer[i], 10, &value);
1121 if (len < 0)
1122 return len;
1123
1124 i += len;
1125
1126 if (node_possible(value)) {
1127 pkt_dev->node = value;
1128 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1129 if (pkt_dev->page) {
1130 put_page(pkt_dev->page);
1131 pkt_dev->page = NULL;
1132 }
e99b99b4
RO		 1133 }
1134 else
1135 sprintf(pg_result, "ERROR: node not possible");
1136 return count;
1137 }
1da177e4 1138 if (!strcmp(name, "flag")) {
222f1806
LC		 1139 char f[32];
1140 memset(f, 0, 32);
1da177e4 1141 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1142 if (len < 0)
222f1806 1143 return len;
63adc6fb 1144
1da177e4
LT		 1145 if (copy_from_user(f, &user_buffer[i], len))
1146 return -EFAULT;
1147 i += len;
222f1806
LC		 1148 if (strcmp(f, "IPSRC_RND") == 0)
1149 pkt_dev->flags |= F_IPSRC_RND;
1150
1151 else if (strcmp(f, "!IPSRC_RND") == 0)
1152 pkt_dev->flags &= ~F_IPSRC_RND;
1153
1154 else if (strcmp(f, "TXSIZE_RND") == 0)
1155 pkt_dev->flags |= F_TXSIZE_RND;
1156
1157 else if (strcmp(f, "!TXSIZE_RND") == 0)
1158 pkt_dev->flags &= ~F_TXSIZE_RND;
1159
1160 else if (strcmp(f, "IPDST_RND") == 0)
1161 pkt_dev->flags |= F_IPDST_RND;
1162
1163 else if (strcmp(f, "!IPDST_RND") == 0)
1164 pkt_dev->flags &= ~F_IPDST_RND;
1165
1166 else if (strcmp(f, "UDPSRC_RND") == 0)
1167 pkt_dev->flags |= F_UDPSRC_RND;
1168
1169 else if (strcmp(f, "!UDPSRC_RND") == 0)
1170 pkt_dev->flags &= ~F_UDPSRC_RND;
1171
1172 else if (strcmp(f, "UDPDST_RND") == 0)
1173 pkt_dev->flags |= F_UDPDST_RND;
1174
1175 else if (strcmp(f, "!UDPDST_RND") == 0)
1176 pkt_dev->flags &= ~F_UDPDST_RND;
1177
1178 else if (strcmp(f, "MACSRC_RND") == 0)
1179 pkt_dev->flags |= F_MACSRC_RND;
1180
1181 else if (strcmp(f, "!MACSRC_RND") == 0)
1182 pkt_dev->flags &= ~F_MACSRC_RND;
1183
1184 else if (strcmp(f, "MACDST_RND") == 0)
1185 pkt_dev->flags |= F_MACDST_RND;
1186
1187 else if (strcmp(f, "!MACDST_RND") == 0)
1188 pkt_dev->flags &= ~F_MACDST_RND;
1189
ca6549af
SW		 1190 else if (strcmp(f, "MPLS_RND") == 0)
1191 pkt_dev->flags |= F_MPLS_RND;
1192
1193 else if (strcmp(f, "!MPLS_RND") == 0)
1194 pkt_dev->flags &= ~F_MPLS_RND;
1195
34954ddc
FF		 1196 else if (strcmp(f, "VID_RND") == 0)
1197 pkt_dev->flags |= F_VID_RND;
1198
1199 else if (strcmp(f, "!VID_RND") == 0)
1200 pkt_dev->flags &= ~F_VID_RND;
1201
1202 else if (strcmp(f, "SVID_RND") == 0)
1203 pkt_dev->flags |= F_SVID_RND;
1204
1205 else if (strcmp(f, "!SVID_RND") == 0)
1206 pkt_dev->flags &= ~F_SVID_RND;
1207
007a531b
JHS		 1208 else if (strcmp(f, "FLOW_SEQ") == 0)
1209 pkt_dev->flags |= F_FLOW_SEQ;
1210
45b270f8
RO		 1211 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1212 pkt_dev->flags |= F_QUEUE_MAP_RND;
1213
1214 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1215 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1216
1217 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1218 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1219
1220 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1221 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1222#ifdef CONFIG_XFRM
1223 else if (strcmp(f, "IPSEC") == 0)
1224 pkt_dev->flags |= F_IPSEC_ON;
1225#endif
1226
1ca7768c
FF		 1227 else if (strcmp(f, "!IPV6") == 0)
1228 pkt_dev->flags &= ~F_IPV6;
1229
e99b99b4
RO		 1230 else if (strcmp(f, "NODE_ALLOC") == 0)
1231 pkt_dev->flags |= F_NODE;
1232
1233 else if (strcmp(f, "!NODE_ALLOC") == 0)
1234 pkt_dev->flags &= ~F_NODE;
1235
222f1806
LC		 1236 else {
1237 sprintf(pg_result,
1238 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1239 f,
1ca7768c 1240 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1241 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1242 return count;
1243 }
1da177e4
LT		 1244 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1245 return count;
1246 }
1247 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1248 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1249 if (len < 0)
222f1806 1250 return len;
1da177e4 1251
222f1806 1252 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1253 return -EFAULT;
222f1806
LC		 1254 buf[len] = 0;
1255 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1256 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1257 strncpy(pkt_dev->dst_min, buf, len);
1258 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1259 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1260 }
1261 if (debug)
f342cda7 1262 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1263 i += len;
1da177e4
LT		 1264 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1265 return count;
1266 }
1267 if (!strcmp(name, "dst_max")) {
1268 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1269 if (len < 0)
222f1806 1270 return len;
63adc6fb 1271
1da177e4 1272
222f1806 1273 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1274 return -EFAULT;
1275
222f1806
LC		 1276 buf[len] = 0;
1277 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1278 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1279 strncpy(pkt_dev->dst_max, buf, len);
1280 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1281 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1282 }
1283 if (debug)
f342cda7 1284 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1285 i += len;
1286 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1287 return count;
1288 }
1289 if (!strcmp(name, "dst6")) {
1290 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1291 if (len < 0)
1292 return len;
1da177e4
LT		 1293
1294 pkt_dev->flags |= F_IPV6;
1295
222f1806 1296 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1297 return -EFAULT;
222f1806 1298 buf[len] = 0;
1da177e4 1299
c468fb13 1300 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1301 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1302
4e3fd7a0 1303 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1304
222f1806 1305 if (debug)
f342cda7 1306 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1307
222f1806 1308 i += len;
1da177e4
LT		 1309 sprintf(pg_result, "OK: dst6=%s", buf);
1310 return count;
1311 }
1312 if (!strcmp(name, "dst6_min")) {
1313 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1314 if (len < 0)
1315 return len;
1da177e4
LT		 1316
1317 pkt_dev->flags |= F_IPV6;
1318
222f1806 1319 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1320 return -EFAULT;
222f1806 1321 buf[len] = 0;
1da177e4 1322
c468fb13 1323 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1324 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1325
4e3fd7a0 1326 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1327 if (debug)
f342cda7 1328 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1329
222f1806 1330 i += len;
1da177e4
LT		 1331 sprintf(pg_result, "OK: dst6_min=%s", buf);
1332 return count;
1333 }
1334 if (!strcmp(name, "dst6_max")) {
1335 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1336 if (len < 0)
1337 return len;
1da177e4
LT		 1338
1339 pkt_dev->flags |= F_IPV6;
1340
222f1806 1341 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1342 return -EFAULT;
222f1806 1343 buf[len] = 0;
1da177e4 1344
c468fb13 1345 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1346 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1347
222f1806 1348 if (debug)
f342cda7 1349 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1350
222f1806 1351 i += len;
1da177e4
LT		 1352 sprintf(pg_result, "OK: dst6_max=%s", buf);
1353 return count;
1354 }
1355 if (!strcmp(name, "src6")) {
1356 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1357 if (len < 0)
1358 return len;
1da177e4
LT		 1359
1360 pkt_dev->flags |= F_IPV6;
1361
222f1806 1362 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1363 return -EFAULT;
222f1806 1364 buf[len] = 0;
1da177e4 1365
c468fb13 1366 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1367 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1368
4e3fd7a0 1369 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1370
222f1806 1371 if (debug)
f342cda7 1372 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1373
1374 i += len;
1da177e4
LT		 1375 sprintf(pg_result, "OK: src6=%s", buf);
1376 return count;
1377 }
1378 if (!strcmp(name, "src_min")) {
1379 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1380 if (len < 0)
222f1806 1381 return len;
63adc6fb 1382
222f1806 1383 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1384 return -EFAULT;
222f1806
LC		 1385 buf[len] = 0;
1386 if (strcmp(buf, pkt_dev->src_min) != 0) {
1387 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1388 strncpy(pkt_dev->src_min, buf, len);
1389 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1390 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1391 }
1392 if (debug)
f342cda7 1393 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1394 i += len;
1395 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1396 return count;
1397 }
1398 if (!strcmp(name, "src_max")) {
1399 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1400 if (len < 0)
222f1806 1401 return len;
63adc6fb 1402
222f1806 1403 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1404 return -EFAULT;
222f1806
LC		 1405 buf[len] = 0;
1406 if (strcmp(buf, pkt_dev->src_max) != 0) {
1407 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1408 strncpy(pkt_dev->src_max, buf, len);
1409 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1410 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1411 }
1412 if (debug)
f342cda7 1413 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1414 i += len;
1415 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1416 return count;
1417 }
1418 if (!strcmp(name, "dst_mac")) {
1da177e4 1419 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1420 if (len < 0)
222f1806 1421 return len;
63adc6fb 1422
1da177e4 1423 memset(valstr, 0, sizeof(valstr));
222f1806 1424 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1425 return -EFAULT;
1da177e4 1426
4940fc88
AD		 1427 if (!mac_pton(valstr, pkt_dev->dst_mac))
1428 return -EINVAL;
1da177e4 1429 /* Set up Dest MAC */
4940fc88 1430 memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
222f1806 1431
4940fc88 1432 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1433 return count;
1434 }
1435 if (!strcmp(name, "src_mac")) {
1da177e4 1436 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1437 if (len < 0)
222f1806 1438 return len;
63adc6fb 1439
1da177e4 1440 memset(valstr, 0, sizeof(valstr));
222f1806 1441 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1442 return -EFAULT;
1da177e4 1443
4940fc88
AD		 1444 if (!mac_pton(valstr, pkt_dev->src_mac))
1445 return -EINVAL;
ce5d0b47 1446 /* Set up Src MAC */
4940fc88 1447 memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
ce5d0b47 1448
4940fc88 1449 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1450 return count;
1451 }
1452
222f1806
LC		 1453 if (!strcmp(name, "clear_counters")) {
1454 pktgen_clear_counters(pkt_dev);
1455 sprintf(pg_result, "OK: Clearing counters.\n");
1456 return count;
1457 }
1da177e4
LT		 1458
1459 if (!strcmp(name, "flows")) {
1460 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1461 if (len < 0)
222f1806 1462 return len;
63adc6fb 1463
1da177e4
LT		 1464 i += len;
1465 if (value > MAX_CFLOWS)
1466 value = MAX_CFLOWS;
1467
1468 pkt_dev->cflows = value;
1469 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1470 return count;
1471 }
1472
1473 if (!strcmp(name, "flowlen")) {
1474 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1475 if (len < 0)
222f1806 1476 return len;
63adc6fb 1477
1da177e4
LT		 1478 i += len;
1479 pkt_dev->lflow = value;
1480 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1481 return count;
1482 }
222f1806 1483
45b270f8
RO		 1484 if (!strcmp(name, "queue_map_min")) {
1485 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1486 if (len < 0)
45b270f8 1487 return len;
63adc6fb 1488
45b270f8
RO		 1489 i += len;
1490 pkt_dev->queue_map_min = value;
1491 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1492 return count;
1493 }
1494
1495 if (!strcmp(name, "queue_map_max")) {
1496 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1497 if (len < 0)
45b270f8 1498 return len;
63adc6fb 1499
45b270f8
RO		 1500 i += len;
1501 pkt_dev->queue_map_max = value;
1502 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1503 return count;
1504 }
1505
ca6549af 1506 if (!strcmp(name, "mpls")) {
95c96174 1507 unsigned int n, cnt;
cfcabdcc 1508
ca6549af 1509 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1510 if (len < 0)
1511 return len;
ca6549af 1512 i += len;
cfcabdcc 1513 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1514 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1515 cnt += sprintf(pg_result + cnt,
1516 "%08x%s", ntohl(pkt_dev->labels[n]),
1517 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1518
1519 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1520 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1521 pkt_dev->svlan_id = 0xffff;
1522
1523 if (debug)
f342cda7 1524 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1525 }
1526 return count;
1527 }
1528
1529 if (!strcmp(name, "vlan_id")) {
1530 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1531 if (len < 0)
34954ddc 1532 return len;
63adc6fb 1533
34954ddc
FF		 1534 i += len;
1535 if (value <= 4095) {
1536 pkt_dev->vlan_id = value; /* turn on VLAN */
1537
1538 if (debug)
f342cda7 1539 pr_debug("VLAN turned on\n");
34954ddc
FF		 1540
1541 if (debug && pkt_dev->nr_labels)
f342cda7 1542 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1543
1544 pkt_dev->nr_labels = 0; /* turn off MPLS */
1545 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1546 } else {
1547 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1548 pkt_dev->svlan_id = 0xffff;
1549
1550 if (debug)
f342cda7 1551 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1552 }
1553 return count;
1554 }
1555
1556 if (!strcmp(name, "vlan_p")) {
1557 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1558 if (len < 0)
34954ddc 1559 return len;
63adc6fb 1560
34954ddc
FF		 1561 i += len;
1562 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1563 pkt_dev->vlan_p = value;
1564 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1565 } else {
1566 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1567 }
1568 return count;
1569 }
1570
1571 if (!strcmp(name, "vlan_cfi")) {
1572 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1573 if (len < 0)
34954ddc 1574 return len;
63adc6fb 1575
34954ddc
FF		 1576 i += len;
1577 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1578 pkt_dev->vlan_cfi = value;
1579 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1580 } else {
1581 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1582 }
1583 return count;
1584 }
1585
1586 if (!strcmp(name, "svlan_id")) {
1587 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1588 if (len < 0)
34954ddc 1589 return len;
63adc6fb 1590
34954ddc
FF		 1591 i += len;
1592 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1593 pkt_dev->svlan_id = value; /* turn on SVLAN */
1594
1595 if (debug)
f342cda7 1596 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1597
1598 if (debug && pkt_dev->nr_labels)
f342cda7 1599 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1600
1601 pkt_dev->nr_labels = 0; /* turn off MPLS */
1602 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1603 } else {
1604 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1605 pkt_dev->svlan_id = 0xffff;
1606
1607 if (debug)
f342cda7 1608 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1609 }
1610 return count;
1611 }
1612
1613 if (!strcmp(name, "svlan_p")) {
1614 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1615 if (len < 0)
34954ddc 1616 return len;
63adc6fb 1617
34954ddc
FF		 1618 i += len;
1619 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1620 pkt_dev->svlan_p = value;
1621 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1622 } else {
1623 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1624 }
1625 return count;
1626 }
1627
1628 if (!strcmp(name, "svlan_cfi")) {
1629 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1630 if (len < 0)
34954ddc 1631 return len;
63adc6fb 1632
34954ddc
FF		 1633 i += len;
1634 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1635 pkt_dev->svlan_cfi = value;
1636 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1637 } else {
1638 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1639 }
ca6549af
SW		 1640 return count;
1641 }
1642
1ca7768c
FF		 1643 if (!strcmp(name, "tos")) {
1644 __u32 tmp_value = 0;
1645 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1646 if (len < 0)
1ca7768c 1647 return len;
63adc6fb 1648
1ca7768c
FF		 1649 i += len;
1650 if (len == 2) {
1651 pkt_dev->tos = tmp_value;
1652 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1653 } else {
1654 sprintf(pg_result, "ERROR: tos must be 00-ff");
1655 }
1656 return count;
1657 }
1658
1659 if (!strcmp(name, "traffic_class")) {
1660 __u32 tmp_value = 0;
1661 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1662 if (len < 0)
1ca7768c 1663 return len;
63adc6fb 1664
1ca7768c
FF		 1665 i += len;
1666 if (len == 2) {
1667 pkt_dev->traffic_class = tmp_value;
1668 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1669 } else {
1670 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1671 }
1672 return count;
1673 }
1674
9e50e3ac
JF		 1675 if (!strcmp(name, "skb_priority")) {
1676 len = num_arg(&user_buffer[i], 9, &value);
1677 if (len < 0)
1678 return len;
1679
1680 i += len;
1681 pkt_dev->skb_priority = value;
1682 sprintf(pg_result, "OK: skb_priority=%i",
1683 pkt_dev->skb_priority);
1684 return count;
1685 }
1686
1da177e4
LT		 1687 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1688 return -EINVAL;
1689}
1690
d50a6b56 1691static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1692{
d50a6b56
SH		 1693 return single_open(file, pktgen_if_show, PDE(inode)->data);
1694}
1da177e4 1695
9a32144e 1696static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1697 .owner = THIS_MODULE,
1698 .open = pktgen_if_open,
1699 .read = seq_read,
1700 .llseek = seq_lseek,
1701 .write = pktgen_if_write,
1702 .release = single_release,
d50a6b56 1703};
1da177e4 1704
d50a6b56
SH		 1705static int pktgen_thread_show(struct seq_file *seq, void *v)
1706{
222f1806 1707 struct pktgen_thread *t = seq->private;
648fda74 1708 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1709
1710 BUG_ON(!t);
1da177e4 1711
222f1806 1712 seq_printf(seq, "Running: ");
1da177e4 1713
222f1806 1714 if_lock(t);
c26a8016 1715 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1716 if (pkt_dev->running)
593f63b0 1717 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1718
222f1806
LC		 1719 seq_printf(seq, "\nStopped: ");
1720
c26a8016 1721 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1722 if (!pkt_dev->running)
593f63b0 1723 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1724
1725 if (t->result[0])
d50a6b56 1726 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1727 else
d50a6b56 1728 seq_printf(seq, "\nResult: NA\n");
1da177e4 1729
222f1806 1730 if_unlock(t);
1da177e4 1731
d50a6b56 1732 return 0;
1da177e4
LT		 1733}
1734
d50a6b56 1735static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1736 const char __user * user_buffer,
1737 size_t count, loff_t * offset)
1da177e4 1738{
8a994a71 1739 struct seq_file *seq = file->private_data;
222f1806 1740 struct pktgen_thread *t = seq->private;
d6182223 1741 int i, max, len, ret;
1da177e4 1742 char name[40];
222f1806 1743 char *pg_result;
d50a6b56 1744
1da177e4 1745 if (count < 1) {
222f1806 1746 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1747 return -EINVAL;
1748 }
d50a6b56 1749
d6182223
PG		 1750 max = count;
1751 len = count_trail_chars(user_buffer, max);
222f1806 1752 if (len < 0)
d50a6b56
SH		 1753 return len;
1754
d6182223 1755 i = len;
d50a6b56 1756
1da177e4
LT		 1757 /* Read variable name */
1758
1759 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1760 if (len < 0)
d50a6b56 1761 return len;
222f1806 1762
1da177e4
LT		 1763 memset(name, 0, sizeof(name));
1764 if (copy_from_user(name, &user_buffer[i], len))
1765 return -EFAULT;
1766 i += len;
d50a6b56 1767
222f1806 1768 max = count - i;
1da177e4 1769 len = count_trail_chars(&user_buffer[i], max);
222f1806 1770 if (len < 0)
d50a6b56
SH		 1771 return len;
1772
1da177e4
LT		 1773 i += len;
1774
d50a6b56 1775 if (debug)
f342cda7 1776 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1777
222f1806 1778 if (!t) {
f9467eae 1779 pr_err("ERROR: No thread\n");
1da177e4
LT		 1780 ret = -EINVAL;
1781 goto out;
1782 }
1783
1784 pg_result = &(t->result[0]);
1785
222f1806
LC		 1786 if (!strcmp(name, "add_device")) {
1787 char f[32];
1788 memset(f, 0, 32);
1da177e4 1789 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1790 if (len < 0) {
1791 ret = len;
1da177e4
LT		 1792 goto out;
1793 }
222f1806 1794 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1795 return -EFAULT;
1796 i += len;
6146e6a4 1797 mutex_lock(&pktgen_thread_lock);
222f1806 1798 pktgen_add_device(t, f);
6146e6a4 1799 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1800 ret = count;
1801 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1802 goto out;
1803 }
1804
222f1806 1805 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1806 mutex_lock(&pktgen_thread_lock);
95ed63f7 1807 t->control |= T_REMDEVALL;
6146e6a4 1808 mutex_unlock(&pktgen_thread_lock);
222f1806 1809 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1810 ret = count;
222f1806 1811 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1812 goto out;
1813 }
1814
222f1806 1815 if (!strcmp(name, "max_before_softirq")) {
b163911f 1816 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1817 ret = count;
1da177e4
LT		 1818 goto out;
1819 }
1820
1821 ret = -EINVAL;
222f1806 1822out:
1da177e4
LT		 1823 return ret;
1824}
1825
d50a6b56 1826static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1827{
d50a6b56 1828 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1829}
1830
9a32144e 1831static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1832 .owner = THIS_MODULE,
1833 .open = pktgen_thread_open,
1834 .read = seq_read,
1835 .llseek = seq_lseek,
1836 .write = pktgen_thread_write,
1837 .release = single_release,
d50a6b56 1838};
1da177e4
LT		 1839
1840/* Think find or remove for NN */
222f1806 1841static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1842{
1843 struct pktgen_thread *t;
1844 struct pktgen_dev *pkt_dev = NULL;
3e984840 1845 bool exact = (remove == FIND);
1da177e4 1846
cdcdbe0b 1847 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1848 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1849 if (pkt_dev) {
222f1806
LC		 1850 if (remove) {
1851 if_lock(t);
1852 pkt_dev->removal_mark = 1;
1853 t->control |= T_REMDEV;
1854 if_unlock(t);
1855 }
1da177e4
LT		 1856 break;
1857 }
1da177e4 1858 }
222f1806 1859 return pkt_dev;
1da177e4
LT		 1860}
1861
95ed63f7
AK		 1862/*
1863 * mark a device for removal
1864 */
39df232f 1865static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1866{
1867 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1868 const int max_tries = 10, msec_per_try = 125;
1869 int i = 0;
95ed63f7 1870
6146e6a4 1871 mutex_lock(&pktgen_thread_lock);
f9467eae 1872 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1873
222f1806 1874 while (1) {
95ed63f7
AK		 1875
1876 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1877 if (pkt_dev == NULL)
1878 break; /* success */
95ed63f7 1879
6146e6a4 1880 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1881 pr_debug("%s: waiting for %s to disappear....\n",
1882 __func__, ifname);
95ed63f7 1883 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1884 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1885
1886 if (++i >= max_tries) {
f9467eae
JP		 1887 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1888 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1889 break;
1890 }
1891
1892 }
1893
6146e6a4 1894 mutex_unlock(&pktgen_thread_lock);
39df232f 1895}
95ed63f7 1896
39df232f
SH		 1897static void pktgen_change_name(struct net_device *dev)
1898{
1899 struct pktgen_thread *t;
1900
1901 list_for_each_entry(t, &pktgen_threads, th_list) {
1902 struct pktgen_dev *pkt_dev;
1903
1904 list_for_each_entry(pkt_dev, &t->if_list, list) {
1905 if (pkt_dev->odev != dev)
1906 continue;
1907
1908 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1909
2975315b
AD		 1910 pkt_dev->entry = proc_create_data(dev->name, 0600,
1911 pg_proc_dir,
1912 &pktgen_if_fops,
1913 pkt_dev);
39df232f 1914 if (!pkt_dev->entry)
f9467eae
JP		 1915 pr_err("can't move proc entry for '%s'\n",
1916 dev->name);
39df232f
SH		 1917 break;
1918 }
1919 }
1da177e4
LT		 1920}
1921
222f1806
LC		 1922static int pktgen_device_event(struct notifier_block *unused,
1923 unsigned long event, void *ptr)
1da177e4 1924{
39df232f 1925 struct net_device *dev = ptr;
1da177e4 1926
c57b5468 1927 if (!net_eq(dev_net(dev), &init_net) || 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
SH		 1935 case NETDEV_CHANGENAME:
1936 pktgen_change_name(dev);
1da177e4 1937 break;
222f1806 1938
1da177e4 1939 case NETDEV_UNREGISTER:
222f1806 1940 pktgen_mark_device(dev->name);
1da177e4 1941 break;
3ff50b79 1942 }
1da177e4
LT		 1943
1944 return NOTIFY_DONE;
1945}
1946
63adc6fb
SH		 1947static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1948 const char *ifname)
e6fce5b9
RO		 1949{
1950 char b[IFNAMSIZ+5];
d6182223 1951 int i;
e6fce5b9 1952
63adc6fb
SH		 1953 for (i = 0; ifname[i] != '@'; i++) {
1954 if (i == IFNAMSIZ)
e6fce5b9
RO		 1955 break;
1956
1957 b[i] = ifname[i];
1958 }
1959 b[i] = 0;
1960
1961 return dev_get_by_name(&init_net, b);
1962}
1963
1964
1da177e4
LT		 1965/* Associate pktgen_dev with a device. */
1966
39df232f 1967static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 1968{
1da177e4 1969 struct net_device *odev;
39df232f 1970 int err;
1da177e4
LT		 1971
1972 /* Clean old setups */
1da177e4
LT		 1973 if (pkt_dev->odev) {
1974 dev_put(pkt_dev->odev);
222f1806
LC		 1975 pkt_dev->odev = NULL;
1976 }
1da177e4 1977
e6fce5b9 1978 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 1979 if (!odev) {
f9467eae 1980 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 1981 return -ENODEV;
1da177e4 1982 }
39df232f 1983
1da177e4 1984 if (odev->type != ARPHRD_ETHER) {
f9467eae 1985 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 1986 err = -EINVAL;
1987 } else if (!netif_running(odev)) {
f9467eae 1988 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 1989 err = -ENETDOWN;
1990 } else {
1991 pkt_dev->odev = odev;
1992 return 0;
1da177e4 1993 }
1da177e4 1994
1da177e4 1995 dev_put(odev);
39df232f 1996 return err;
1da177e4
LT		 1997}
1998
1999/* Read pkt_dev from the interface and set up internal pktgen_dev
2000 * structure to have the right information to create/send packets
2001 */
2002static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2003{
64c00d81
AG		 2004 int ntxq;
2005
222f1806 2006 if (!pkt_dev->odev) {
f9467eae 2007 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2008 sprintf(pkt_dev->result,
2009 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2010 return;
2011 }
2012
64c00d81
AG		 2013 /* make sure that we don't pick a non-existing transmit queue */
2014 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2015
64c00d81 2016 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2017 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2018 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2019 pkt_dev->odevname);
26e29eed 2020 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2021 }
88271660 2022 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2023 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2024 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2025 pkt_dev->odevname);
26e29eed 2026 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2027 }
2028
222f1806 2029 /* Default to the interface's mac if not explicitly set. */
1da177e4 2030
f404e9a6 2031 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2032 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2033
222f1806 2034 /* Set up Dest MAC */
f404e9a6 2035 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2036
222f1806 2037 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2038 int i, set = 0, err = 1;
2039 struct inet6_dev *idev;
2040
68bf9f0b
AW		 2041 if (pkt_dev->min_pkt_size == 0) {
2042 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2043 + sizeof(struct udphdr)
2044 + sizeof(struct pktgen_hdr)
2045 + pkt_dev->pkt_overhead;
2046 }
2047
222f1806
LC		 2048 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2049 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2050 set = 1;
2051 break;
2052 }
2053
222f1806
LC		 2054 if (!set) {
2055
1da177e4
LT		 2056 /*
2057 * Use linklevel address if unconfigured.
2058 *
2059 * use ipv6_get_lladdr if/when it's get exported
2060 */
2061
8814c4b5 2062 rcu_read_lock();
63adc6fb
SH		 2063 idev = __in6_dev_get(pkt_dev->odev);
2064 if (idev) {
1da177e4
LT		 2065 struct inet6_ifaddr *ifp;
2066
2067 read_lock_bh(&idev->lock);
4c139b8c
AW		 2068 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2069 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2070 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2071 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2072 err = 0;
2073 break;
2074 }
2075 }
2076 read_unlock_bh(&idev->lock);
2077 }
8814c4b5 2078 rcu_read_unlock();
222f1806 2079 if (err)
f9467eae 2080 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2081 }
222f1806 2082 } else {
68bf9f0b
AW		 2083 if (pkt_dev->min_pkt_size == 0) {
2084 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2085 + sizeof(struct udphdr)
2086 + sizeof(struct pktgen_hdr)
2087 + pkt_dev->pkt_overhead;
2088 }
2089
1da177e4
LT		 2090 pkt_dev->saddr_min = 0;
2091 pkt_dev->saddr_max = 0;
2092 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2093
2094 struct in_device *in_dev;
1da177e4
LT		 2095
2096 rcu_read_lock();
e5ed6399 2097 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2098 if (in_dev) {
2099 if (in_dev->ifa_list) {
222f1806
LC		 2100 pkt_dev->saddr_min =
2101 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2102 pkt_dev->saddr_max = pkt_dev->saddr_min;
2103 }
1da177e4
LT		 2104 }
2105 rcu_read_unlock();
222f1806 2106 } else {
1da177e4
LT		 2107 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2108 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2109 }
2110
2111 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2112 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2113 }
222f1806 2114 /* Initialize current values. */
68bf9f0b
AW		 2115 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2116 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2117 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2118
222f1806
LC		 2119 pkt_dev->cur_dst_mac_offset = 0;
2120 pkt_dev->cur_src_mac_offset = 0;
2121 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2122 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2123 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2124 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2125 pkt_dev->nflows = 0;
2126}
2127
fd29cf72
SH		 2128
2129static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2130{
ef87979c 2131 ktime_t start_time, end_time;
417bc4b8 2132 s64 remaining;
2bc481cf
SH		 2133 struct hrtimer_sleeper t;
2134
2135 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2136 hrtimer_set_expires(&t.timer, spin_until);
2137
43d28b65 2138 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2139 if (remaining <= 0) {
2140 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2141 return;
417bc4b8 2142 }
2bc481cf 2143
ef87979c 2144 start_time = ktime_now();
33136d12
ED		 2145 if (remaining < 100000) {
2146 /* for small delays (<100us), just loop until limit is reached */
2147 do {
2148 end_time = ktime_now();
2149 } while (ktime_lt(end_time, spin_until));
2150 } else {
2bc481cf
SH		 2151 /* see do_nanosleep */
2152 hrtimer_init_sleeper(&t, current);
2153 do {
2154 set_current_state(TASK_INTERRUPTIBLE);
2155 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2156 if (!hrtimer_active(&t.timer))
2157 t.task = NULL;
2158
2159 if (likely(t.task))
1da177e4 2160 schedule();
1da177e4 2161
2bc481cf
SH		 2162 hrtimer_cancel(&t.timer);
2163 } while (t.task && pkt_dev->running && !signal_pending(current));
2164 __set_current_state(TASK_RUNNING);
33136d12 2165 end_time = ktime_now();
1da177e4 2166 }
ef87979c
SH		 2167
2168 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2169 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2170}
2171
16dab72f
JHS		 2172static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2173{
a553e4a6 2174 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2175 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2176 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2177 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2178}
2179
648fda74 2180static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2181{
648fda74 2182 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2183}
2184
2185static inline int f_pick(struct pktgen_dev *pkt_dev)
2186{
2187 int flow = pkt_dev->curfl;
2188
2189 if (pkt_dev->flags & F_FLOW_SEQ) {
2190 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2191 /* reset time */
2192 pkt_dev->flows[flow].count = 0;
1211a645 2193 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2194 pkt_dev->curfl += 1;
2195 if (pkt_dev->curfl >= pkt_dev->cflows)
2196 pkt_dev->curfl = 0; /*reset */
2197 }
2198 } else {
2199 flow = random32() % pkt_dev->cflows;
1211a645 2200 pkt_dev->curfl = flow;
007a531b 2201
1211a645 2202 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2203 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2204 pkt_dev->flows[flow].flags = 0;
2205 }
007a531b
JHS		 2206 }
2207
2208 return pkt_dev->curfl;
2209}
2210
a553e4a6
JHS		 2211
2212#ifdef CONFIG_XFRM
2213/* If there was already an IPSEC SA, we keep it as is, else
2214 * we go look for it ...
2215*/
bd55775c 2216#define DUMMY_MARK 0
fea1ab0f 2217static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2218{
2219 struct xfrm_state *x = pkt_dev->flows[flow].x;
2220 if (!x) {
2221 /*slow path: we dont already have xfrm_state*/
bd55775c 2222 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2223 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2224 (xfrm_address_t *)&pkt_dev->cur_saddr,
2225 AF_INET,
2226 pkt_dev->ipsmode,
2227 pkt_dev->ipsproto, 0);
2228 if (x) {
2229 pkt_dev->flows[flow].x = x;
2230 set_pkt_overhead(pkt_dev);
63adc6fb 2231 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2232 }
2233
2234 }
2235}
2236#endif
fd2ea0a7
DM		 2237static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2238{
e6fce5b9
RO		 2239
2240 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2241 pkt_dev->cur_queue_map = smp_processor_id();
2242
896a7cf8 2243 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2244 __u16 t;
2245 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2246 t = random32() %
2247 (pkt_dev->queue_map_max -
2248 pkt_dev->queue_map_min + 1)
2249 + pkt_dev->queue_map_min;
2250 } else {
2251 t = pkt_dev->cur_queue_map + 1;
2252 if (t > pkt_dev->queue_map_max)
2253 t = pkt_dev->queue_map_min;
2254 }
2255 pkt_dev->cur_queue_map = t;
2256 }
bfdbc0ac 2257 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2258}
2259
1da177e4
LT		 2260/* Increment/randomize headers according to flags and current values
2261 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2262 */
222f1806
LC		 2263static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2264{
2265 __u32 imn;
2266 __u32 imx;
2267 int flow = 0;
1da177e4 2268
007a531b
JHS		 2269 if (pkt_dev->cflows)
2270 flow = f_pick(pkt_dev);
1da177e4
LT		 2271
2272 /* Deal with source MAC */
222f1806
LC		 2273 if (pkt_dev->src_mac_count > 1) {
2274 __u32 mc;
2275 __u32 tmp;
2276
2277 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2278 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2279 else {
2280 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2281 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2282 pkt_dev->src_mac_count)
2283 pkt_dev->cur_src_mac_offset = 0;
2284 }
2285
2286 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2287 pkt_dev->hh[11] = tmp;
2288 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2289 pkt_dev->hh[10] = tmp;
2290 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2291 pkt_dev->hh[9] = tmp;
2292 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2293 pkt_dev->hh[8] = tmp;
2294 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2295 pkt_dev->hh[7] = tmp;
2296 }
2297
2298 /* Deal with Destination MAC */
2299 if (pkt_dev->dst_mac_count > 1) {
2300 __u32 mc;
2301 __u32 tmp;
2302
2303 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2304 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2305
2306 else {
2307 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2308 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2309 pkt_dev->dst_mac_count) {
2310 pkt_dev->cur_dst_mac_offset = 0;
2311 }
2312 }
2313
2314 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2315 pkt_dev->hh[5] = tmp;
2316 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2317 pkt_dev->hh[4] = tmp;
2318 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2319 pkt_dev->hh[3] = tmp;
2320 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2321 pkt_dev->hh[2] = tmp;
2322 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2323 pkt_dev->hh[1] = tmp;
2324 }
2325
ca6549af 2326 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2327 unsigned int i;
e71a4783 2328 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2329 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2330 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2331 ((__force __be32)random32() &
ca6549af
SW		 2332 htonl(0x000fffff));
2333 }
2334
34954ddc 2335 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2336 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2337 }
2338
2339 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2340 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2341 }
2342
222f1806
LC		 2343 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2344 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2345 pkt_dev->cur_udp_src = random32() %
2346 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2347 + pkt_dev->udp_src_min;
222f1806
LC		 2348
2349 else {
1da177e4
LT		 2350 pkt_dev->cur_udp_src++;
2351 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2352 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2353 }
2354 }
2355
2356 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2357 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2358 pkt_dev->cur_udp_dst = random32() %
2359 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2360 + pkt_dev->udp_dst_min;
222f1806 2361 } else {
1da177e4 2362 pkt_dev->cur_udp_dst++;
222f1806 2363 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2364 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2365 }
2366 }
1da177e4
LT		 2367
2368 if (!(pkt_dev->flags & F_IPV6)) {
2369
63adc6fb
SH		 2370 imn = ntohl(pkt_dev->saddr_min);
2371 imx = ntohl(pkt_dev->saddr_max);
2372 if (imn < imx) {
1da177e4 2373 __u32 t;
222f1806 2374 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2375 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2376 else {
2377 t = ntohl(pkt_dev->cur_saddr);
2378 t++;
63adc6fb 2379 if (t > imx)
1da177e4 2380 t = imn;
63adc6fb 2381
1da177e4
LT		 2382 }
2383 pkt_dev->cur_saddr = htonl(t);
2384 }
222f1806 2385
007a531b 2386 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2387 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2388 } else {
252e3346
AV		 2389 imn = ntohl(pkt_dev->daddr_min);
2390 imx = ntohl(pkt_dev->daddr_max);
2391 if (imn < imx) {
1da177e4 2392 __u32 t;
252e3346 2393 __be32 s;
1da177e4
LT		 2394 if (pkt_dev->flags & F_IPDST_RND) {
2395
5fa6fc76 2396 t = random32() % (imx - imn) + imn;
252e3346 2397 s = htonl(t);
1da177e4 2398
21cf2253
JP		 2399 while (ipv4_is_loopback(s) ||
2400 ipv4_is_multicast(s) ||
1e637c74 2401 ipv4_is_lbcast(s) ||
21cf2253
JP		 2402 ipv4_is_zeronet(s) ||
2403 ipv4_is_local_multicast(s)) {
5fa6fc76 2404 t = random32() % (imx - imn) + imn;
252e3346 2405 s = htonl(t);
1da177e4 2406 }
252e3346
AV		 2407 pkt_dev->cur_daddr = s;
2408 } else {
1da177e4
LT		 2409 t = ntohl(pkt_dev->cur_daddr);
2410 t++;
2411 if (t > imx) {
2412 t = imn;
2413 }
2414 pkt_dev->cur_daddr = htonl(t);
2415 }
2416 }
222f1806 2417 if (pkt_dev->cflows) {
007a531b 2418 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2419 pkt_dev->flows[flow].cur_daddr =
2420 pkt_dev->cur_daddr;
a553e4a6
JHS		 2421#ifdef CONFIG_XFRM
2422 if (pkt_dev->flags & F_IPSEC_ON)
2423 get_ipsec_sa(pkt_dev, flow);
2424#endif
1da177e4
LT		 2425 pkt_dev->nflows++;
2426 }
2427 }
222f1806
LC		 2428 } else { /* IPV6 * */
2429
06e30411 2430 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2431 int i;
2432
2433 /* Only random destinations yet */
2434
222f1806 2435 for (i = 0; i < 4; i++) {
1da177e4 2436 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2437 (((__force __be32)random32() |
222f1806
LC		 2438 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2439 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2440 }
222f1806 2441 }
1da177e4
LT		 2442 }
2443
222f1806
LC		 2444 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2445 __u32 t;
2446 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2447 t = random32() %
2448 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2449 + pkt_dev->min_pkt_size;
222f1806 2450 } else {
1da177e4 2451 t = pkt_dev->cur_pkt_size + 1;
222f1806 2452 if (t > pkt_dev->max_pkt_size)
1da177e4 2453 t = pkt_dev->min_pkt_size;
222f1806
LC		 2454 }
2455 pkt_dev->cur_pkt_size = t;
2456 }
1da177e4 2457
fd2ea0a7 2458 set_cur_queue_map(pkt_dev);
45b270f8 2459
1da177e4
LT		 2460 pkt_dev->flows[flow].count++;
2461}
2462
a553e4a6
JHS		 2463
2464#ifdef CONFIG_XFRM
2465static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2466{
2467 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2468 int err = 0;
a553e4a6
JHS		 2469
2470 if (!x)
2471 return 0;
2472 /* XXX: we dont support tunnel mode for now until
2473 * we resolve the dst issue */
2474 if (x->props.mode != XFRM_MODE_TRANSPORT)
2475 return 0;
2476
2477 spin_lock(&x->lock);
a553e4a6 2478
13996378 2479 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2480 if (err)
2481 goto error;
2482 err = x->type->output(x, skb);
2483 if (err)
2484 goto error;
2485
63adc6fb 2486 x->curlft.bytes += skb->len;
a553e4a6 2487 x->curlft.packets++;
a553e4a6
JHS		 2488error:
2489 spin_unlock(&x->lock);
2490 return err;
2491}
2492
475ac1e4 2493static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2494{
2495 if (pkt_dev->cflows) {
2496 /* let go of the SAs if we have them */
d6182223
PG		 2497 int i;
2498 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2499 struct xfrm_state *x = pkt_dev->flows[i].x;
2500 if (x) {
2501 xfrm_state_put(x);
2502 pkt_dev->flows[i].x = NULL;
2503 }
2504 }
2505 }
2506}
2507
475ac1e4 2508static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2509 struct sk_buff *skb, __be16 protocol)
2510{
2511 if (pkt_dev->flags & F_IPSEC_ON) {
2512 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2513 int nhead = 0;
2514 if (x) {
2515 int ret;
2516 __u8 *eth;
2517 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2518 if (nhead > 0) {
a553e4a6
JHS		 2519 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2520 if (ret < 0) {
f9467eae
JP		 2521 pr_err("Error expanding ipsec packet %d\n",
2522 ret);
b4bb4ac8 2523 goto err;
a553e4a6
JHS		 2524 }
2525 }
2526
2527 /* ipsec is not expecting ll header */
2528 skb_pull(skb, ETH_HLEN);
2529 ret = pktgen_output_ipsec(skb, pkt_dev);
2530 if (ret) {
f9467eae 2531 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2532 goto err;
a553e4a6
JHS		 2533 }
2534 /* restore ll */
2535 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2536 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2537 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2538 }
2539 }
2540 return 1;
b4bb4ac8
IJ		 2541err:
2542 kfree_skb(skb);
2543 return 0;
a553e4a6
JHS		 2544}
2545#endif
2546
ca6549af
SW		 2547static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2548{
95c96174 2549 unsigned int i;
63adc6fb 2550 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2551 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2552
ca6549af
SW		 2553 mpls--;
2554 *mpls |= MPLS_STACK_BOTTOM;
2555}
2556
0f37c605
AV		 2557static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2558 unsigned int prio)
2559{
2560 return htons(id | (cfi << 12) | (prio << 13));
2561}
2562
26ad7879
ED		 2563static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2564 int datalen)
2565{
2566 struct timeval timestamp;
2567 struct pktgen_hdr *pgh;
2568
2569 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2570 datalen -= sizeof(*pgh);
2571
2572 if (pkt_dev->nfrags <= 0) {
05aebe2e 2573 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2574 } else {
2575 int frags = pkt_dev->nfrags;
2576 int i, len;
7d36a991 2577 int frag_len;
26ad7879
ED		 2578
2579
2580 if (frags > MAX_SKB_FRAGS)
2581 frags = MAX_SKB_FRAGS;
2582 len = datalen - frags * PAGE_SIZE;
2583 if (len > 0) {
2584 memset(skb_put(skb, len), 0, len);
2585 datalen = frags * PAGE_SIZE;
2586 }
2587
2588 i = 0;
7d36a991 2589 frag_len = (datalen/frags) < PAGE_SIZE ?
2590 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2591 while (datalen > 0) {
2592 if (unlikely(!pkt_dev->page)) {
2593 int node = numa_node_id();
2594
2595 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2596 node = pkt_dev->node;
2597 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2598 if (!pkt_dev->page)
2599 break;
2600 }
a0bec1cd 2601 get_page(pkt_dev->page);
ea2ab693 2602 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2603 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2604 /*last fragment, fill rest of data*/
2605 if (i == (frags - 1))
9e903e08
ED		 2606 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2607 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2608 else
9e903e08
ED		 2609 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2610 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2611 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2612 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2613 i++;
2614 skb_shinfo(skb)->nr_frags = i;
2615 }
26ad7879
ED		 2616 }
2617
2618 /* Stamp the time, and sequence number,
2619 * convert them to network byte order
2620 */
2621 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2622 pgh->seq_num = htonl(pkt_dev->seq_num);
2623
2624 do_gettimeofday(&timestamp);
2625 pgh->tv_sec = htonl(timestamp.tv_sec);
2626 pgh->tv_usec = htonl(timestamp.tv_usec);
2627}
2628
222f1806
LC		 2629static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2630 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2631{
2632 struct sk_buff *skb = NULL;
2633 __u8 *eth;
2634 struct udphdr *udph;
2635 int datalen, iplen;
2636 struct iphdr *iph;
d5f1ce9a 2637 __be16 protocol = htons(ETH_P_IP);
ca6549af 2638 __be32 *mpls;
34954ddc
FF		 2639 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2640 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2641 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2642 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2643 u16 queue_map;
ca6549af
SW		 2644
2645 if (pkt_dev->nr_labels)
d5f1ce9a 2646 protocol = htons(ETH_P_MPLS_UC);
222f1806 2647
34954ddc 2648 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2649 protocol = htons(ETH_P_8021Q);
34954ddc 2650
64053bee
RO		 2651 /* Update any of the values, used when we're incrementing various
2652 * fields.
2653 */
2654 mod_cur_headers(pkt_dev);
eb589063 2655 queue_map = pkt_dev->cur_queue_map;
64053bee 2656
7ac5459e 2657 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2658
2659 if (pkt_dev->flags & F_NODE) {
2660 int node;
2661
2662 if (pkt_dev->node >= 0)
2663 node = pkt_dev->node;
2664 else
2665 node = numa_node_id();
2666
2667 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2668 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2669 if (likely(skb)) {
2670 skb_reserve(skb, NET_SKB_PAD);
2671 skb->dev = odev;
2672 }
2673 }
2674 else
2675 skb = __netdev_alloc_skb(odev,
2676 pkt_dev->cur_pkt_size + 64
2677 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2678
1da177e4
LT		 2679 if (!skb) {
2680 sprintf(pkt_dev->result, "No memory");
2681 return NULL;
2682 }
a8d764b9 2683 prefetchw(skb->data);
1da177e4 2684
7ac5459e 2685 skb_reserve(skb, datalen);
1da177e4
LT		 2686
2687 /* Reserve for ethernet and IP header */
2688 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2689 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2690 if (pkt_dev->nr_labels)
2691 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2692
2693 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2694 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2695 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2696 *svlan_tci = build_tci(pkt_dev->svlan_id,
2697 pkt_dev->svlan_cfi,
2698 pkt_dev->svlan_p);
34954ddc 2699 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2700 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2701 }
2702 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2703 *vlan_tci = build_tci(pkt_dev->vlan_id,
2704 pkt_dev->vlan_cfi,
2705 pkt_dev->vlan_p);
34954ddc 2706 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2707 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2708 }
2709
27a884dc 2710 skb->network_header = skb->tail;
b0e380b1 2711 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2712 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2713 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2714 skb->priority = pkt_dev->skb_priority;
2715
ddc7b8e3
ACM		 2716 iph = ip_hdr(skb);
2717 udph = udp_hdr(skb);
1da177e4 2718
1da177e4 2719 memcpy(eth, pkt_dev->hh, 12);
252e3346 2720 *(__be16 *) & eth[12] = protocol;
1da177e4 2721
ca6549af
SW		 2722 /* Eth + IPh + UDPh + mpls */
2723 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2724 pkt_dev->pkt_overhead;
6af773e7 2725 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2726 datalen = sizeof(struct pktgen_hdr);
222f1806 2727
1da177e4
LT		 2728 udph->source = htons(pkt_dev->cur_udp_src);
2729 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2730 udph->len = htons(datalen + 8); /* DATA + udphdr */
2731 udph->check = 0; /* No checksum */
1da177e4
LT		 2732
2733 iph->ihl = 5;
2734 iph->version = 4;
2735 iph->ttl = 32;
1ca7768c 2736 iph->tos = pkt_dev->tos;
222f1806 2737 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2738 iph->saddr = pkt_dev->cur_saddr;
2739 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2740 iph->id = htons(pkt_dev->ip_id);
2741 pkt_dev->ip_id++;
1da177e4
LT		 2742 iph->frag_off = 0;
2743 iplen = 20 + 8 + datalen;
2744 iph->tot_len = htons(iplen);
2745 iph->check = 0;
222f1806 2746 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2747 skb->protocol = protocol;
b0e380b1 2748 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2749 pkt_dev->pkt_overhead);
1da177e4
LT		 2750 skb->dev = odev;
2751 skb->pkt_type = PACKET_HOST;
26ad7879 2752 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2753
a553e4a6
JHS		 2754#ifdef CONFIG_XFRM
2755 if (!process_ipsec(pkt_dev, skb, protocol))
2756 return NULL;
2757#endif
2758
1da177e4
LT		 2759 return skb;
2760}
2761
222f1806
LC		 2762static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2763 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2764{
2765 struct sk_buff *skb = NULL;
2766 __u8 *eth;
2767 struct udphdr *udph;
2768 int datalen;
2769 struct ipv6hdr *iph;
d5f1ce9a 2770 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2771 __be32 *mpls;
34954ddc
FF		 2772 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2773 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2774 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2775 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2776 u16 queue_map;
ca6549af
SW		 2777
2778 if (pkt_dev->nr_labels)
d5f1ce9a 2779 protocol = htons(ETH_P_MPLS_UC);
64053bee 2780
34954ddc 2781 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2782 protocol = htons(ETH_P_8021Q);
34954ddc 2783
64053bee
RO		 2784 /* Update any of the values, used when we're incrementing various
2785 * fields.
2786 */
2787 mod_cur_headers(pkt_dev);
eb589063 2788 queue_map = pkt_dev->cur_queue_map;
64053bee 2789
e470757d
SH		 2790 skb = __netdev_alloc_skb(odev,
2791 pkt_dev->cur_pkt_size + 64
2792 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 2793 if (!skb) {
2794 sprintf(pkt_dev->result, "No memory");
2795 return NULL;
2796 }
a8d764b9 2797 prefetchw(skb->data);
1da177e4
LT		 2798
2799 skb_reserve(skb, 16);
2800
2801 /* Reserve for ethernet and IP header */
2802 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2803 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2804 if (pkt_dev->nr_labels)
2805 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2806
2807 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2808 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2809 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2810 *svlan_tci = build_tci(pkt_dev->svlan_id,
2811 pkt_dev->svlan_cfi,
2812 pkt_dev->svlan_p);
34954ddc 2813 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2814 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2815 }
2816 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2817 *vlan_tci = build_tci(pkt_dev->vlan_id,
2818 pkt_dev->vlan_cfi,
2819 pkt_dev->vlan_p);
34954ddc 2820 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2821 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2822 }
2823
27a884dc 2824 skb->network_header = skb->tail;
b0e380b1 2825 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 2826 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 2827 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2828 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 2829 iph = ipv6_hdr(skb);
2830 udph = udp_hdr(skb);
1da177e4 2831
1da177e4 2832 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2833 *(__be16 *) &eth[12] = protocol;
64053bee 2834
ca6549af
SW		 2835 /* Eth + IPh + UDPh + mpls */
2836 datalen = pkt_dev->cur_pkt_size - 14 -
2837 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2838 pkt_dev->pkt_overhead;
1da177e4 2839
5aa8b572 2840 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2841 datalen = sizeof(struct pktgen_hdr);
e87cc472 2842 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2843 }
2844
2845 udph->source = htons(pkt_dev->cur_udp_src);
2846 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2847 udph->len = htons(datalen + sizeof(struct udphdr));
2848 udph->check = 0; /* No checksum */
1da177e4 2849
d5f1ce9a 2850 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2851
1ca7768c
FF		 2852 if (pkt_dev->traffic_class) {
2853 /* Version + traffic class + flow (0) */
252e3346 2854 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2855 }
2856
1da177e4
LT		 2857 iph->hop_limit = 32;
2858
2859 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
2860 iph->nexthdr = IPPROTO_UDP;
2861
4e3fd7a0
AD		 2862 iph->daddr = pkt_dev->cur_in6_daddr;
2863 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2864
b0e380b1 2865 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2866 pkt_dev->pkt_overhead);
ca6549af 2867 skb->protocol = protocol;
1da177e4
LT		 2868 skb->dev = odev;
2869 skb->pkt_type = PACKET_HOST;
2870
26ad7879 2871 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2872
1da177e4
LT		 2873 return skb;
2874}
2875
475ac1e4
SH		 2876static struct sk_buff *fill_packet(struct net_device *odev,
2877 struct pktgen_dev *pkt_dev)
1da177e4 2878{
222f1806 2879 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2880 return fill_packet_ipv6(odev, pkt_dev);
2881 else
2882 return fill_packet_ipv4(odev, pkt_dev);
2883}
2884
222f1806 2885static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2886{
222f1806
LC		 2887 pkt_dev->seq_num = 1;
2888 pkt_dev->idle_acc = 0;
1da177e4 2889 pkt_dev->sofar = 0;
222f1806
LC		 2890 pkt_dev->tx_bytes = 0;
2891 pkt_dev->errors = 0;
1da177e4
LT		 2892}
2893
2894/* Set up structure for sending pkts, clear counters */
2895
2896static void pktgen_run(struct pktgen_thread *t)
2897{
c26a8016 2898 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2899 int started = 0;
2900
f9467eae 2901 func_enter();
1da177e4
LT		 2902
2903 if_lock(t);
c26a8016 2904 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 2905
2906 /*
2907 * setup odev and create initial packet.
2908 */
2909 pktgen_setup_inject(pkt_dev);
2910
222f1806 2911 if (pkt_dev->odev) {
1da177e4 2912 pktgen_clear_counters(pkt_dev);
222f1806 2913 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 2914 pkt_dev->skb = NULL;
fd29cf72
SH		 2915 pkt_dev->started_at =
2916 pkt_dev->next_tx = ktime_now();
2917
16dab72f 2918 set_pkt_overhead(pkt_dev);
222f1806 2919
1da177e4
LT		 2920 strcpy(pkt_dev->result, "Starting");
2921 started++;
222f1806 2922 } else
1da177e4
LT		 2923 strcpy(pkt_dev->result, "Error starting");
2924 }
2925 if_unlock(t);
222f1806
LC		 2926 if (started)
2927 t->control &= ~(T_STOP);
1da177e4
LT		 2928}
2929
2930static void pktgen_stop_all_threads_ifs(void)
2931{
cdcdbe0b 2932 struct pktgen_thread *t;
1da177e4 2933
f9467eae 2934 func_enter();
1da177e4 2935
6146e6a4 2936 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 2937
2938 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 2939 t->control |= T_STOP;
cdcdbe0b 2940
6146e6a4 2941 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 2942}
2943
648fda74 2944static int thread_is_running(const struct pktgen_thread *t)
1da177e4 2945{
648fda74 2946 const struct pktgen_dev *pkt_dev;
1da177e4 2947
c26a8016 2948 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 2949 if (pkt_dev->running)
2950 return 1;
2951 return 0;
1da177e4
LT		 2952}
2953
222f1806 2954static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 2955{
222f1806 2956 if_lock(t);
1da177e4 2957
222f1806 2958 while (thread_is_running(t)) {
1da177e4 2959
222f1806 2960 if_unlock(t);
1da177e4 2961
222f1806 2962 msleep_interruptible(100);
1da177e4 2963
222f1806
LC		 2964 if (signal_pending(current))
2965 goto signal;
2966 if_lock(t);
2967 }
2968 if_unlock(t);
2969 return 1;
2970signal:
2971 return 0;
1da177e4
LT		 2972}
2973
2974static int pktgen_wait_all_threads_run(void)
2975{
cdcdbe0b 2976 struct pktgen_thread *t;
1da177e4 2977 int sig = 1;
222f1806 2978
6146e6a4 2979 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 2980
2981 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 2982 sig = pktgen_wait_thread_run(t);
222f1806
LC		 2983 if (sig == 0)
2984 break;
1da177e4 2985 }
cdcdbe0b
LC		 2986
2987 if (sig == 0)
2988 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 2989 t->control |= (T_STOP);
cdcdbe0b 2990
6146e6a4 2991 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 2992 return sig;
2993}
2994
2995static void pktgen_run_all_threads(void)
2996{
cdcdbe0b 2997 struct pktgen_thread *t;
1da177e4 2998
f9467eae 2999 func_enter();
1da177e4 3000
6146e6a4 3001 mutex_lock(&pktgen_thread_lock);
1da177e4 3002
cdcdbe0b 3003 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3004 t->control |= (T_RUN);
cdcdbe0b 3005
6146e6a4 3006 mutex_unlock(&pktgen_thread_lock);
1da177e4 3007
63adc6fb
SH		 3008 /* Propagate thread->control */
3009 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3010
1da177e4
LT		 3011 pktgen_wait_all_threads_run();
3012}
3013
eb37b41c
JB		 3014static void pktgen_reset_all_threads(void)
3015{
3016 struct pktgen_thread *t;
3017
f9467eae 3018 func_enter();
eb37b41c
JB		 3019
3020 mutex_lock(&pktgen_thread_lock);
3021
3022 list_for_each_entry(t, &pktgen_threads, th_list)
3023 t->control |= (T_REMDEVALL);
3024
3025 mutex_unlock(&pktgen_thread_lock);
3026
63adc6fb
SH		 3027 /* Propagate thread->control */
3028 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3029
3030 pktgen_wait_all_threads_run();
3031}
3032
1da177e4
LT		 3033static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3034{
fd29cf72 3035 __u64 bps, mbps, pps;
222f1806 3036 char *p = pkt_dev->result;
fd29cf72
SH		 3037 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3038 pkt_dev->started_at);
3039 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3040
03a14ab1 3041 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3042 (unsigned long long)ktime_to_us(elapsed),
3043 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3044 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3045 (unsigned long long)pkt_dev->sofar,
3046 pkt_dev->cur_pkt_size, nr_frags);
3047
fd29cf72
SH		 3048 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3049 ktime_to_ns(elapsed));
222f1806
LC		 3050
3051 bps = pps * 8 * pkt_dev->cur_pkt_size;
3052
3053 mbps = bps;
3054 do_div(mbps, 1000000);
3055 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3056 (unsigned long long)pps,
3057 (unsigned long long)mbps,
3058 (unsigned long long)bps,
3059 (unsigned long long)pkt_dev->errors);
1da177e4 3060}
1da177e4
LT		 3061
3062/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3063static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3064{
222f1806 3065 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3066
222f1806 3067 if (!pkt_dev->running) {
f9467eae
JP		 3068 pr_warning("interface: %s is already stopped\n",
3069 pkt_dev->odevname);
222f1806
LC		 3070 return -EINVAL;
3071 }
1da177e4 3072
3bda06a3
SH		 3073 kfree_skb(pkt_dev->skb);
3074 pkt_dev->skb = NULL;
fd29cf72 3075 pkt_dev->stopped_at = ktime_now();
222f1806 3076 pkt_dev->running = 0;
1da177e4 3077
95ed63f7 3078 show_results(pkt_dev, nr_frags);
1da177e4 3079
222f1806 3080 return 0;
1da177e4
LT		 3081}
3082
222f1806 3083static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3084{
c26a8016 3085 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3086
1da177e4
LT		 3087 if_lock(t);
3088
c26a8016
LC		 3089 list_for_each_entry(pkt_dev, &t->if_list, list) {
3090 if (!pkt_dev->running)
222f1806
LC		 3091 continue;
3092 if (best == NULL)
c26a8016 3093 best = pkt_dev;
fd29cf72 3094 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3095 best = pkt_dev;
1da177e4
LT		 3096 }
3097 if_unlock(t);
222f1806 3098 return best;
1da177e4
LT		 3099}
3100
222f1806
LC		 3101static void pktgen_stop(struct pktgen_thread *t)
3102{
c26a8016 3103 struct pktgen_dev *pkt_dev;
1da177e4 3104
f9467eae 3105 func_enter();
1da177e4 3106
222f1806 3107 if_lock(t);
1da177e4 3108
c26a8016
LC		 3109 list_for_each_entry(pkt_dev, &t->if_list, list) {
3110 pktgen_stop_device(pkt_dev);
95ed63f7 3111 }
1da177e4 3112
222f1806 3113 if_unlock(t);
1da177e4
LT		 3114}
3115
95ed63f7
AK		 3116/*
3117 * one of our devices needs to be removed - find it
3118 * and remove it
3119 */
3120static void pktgen_rem_one_if(struct pktgen_thread *t)
3121{
c26a8016
LC		 3122 struct list_head *q, *n;
3123 struct pktgen_dev *cur;
95ed63f7 3124
f9467eae 3125 func_enter();
95ed63f7
AK		 3126
3127 if_lock(t);
3128
c26a8016
LC		 3129 list_for_each_safe(q, n, &t->if_list) {
3130 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3131
222f1806
LC		 3132 if (!cur->removal_mark)
3133 continue;
95ed63f7 3134
86dc1ad2 3135 kfree_skb(cur->skb);
95ed63f7
AK		 3136 cur->skb = NULL;
3137
3138 pktgen_remove_device(t, cur);
3139
3140 break;
3141 }
3142
3143 if_unlock(t);
3144}
3145
222f1806 3146static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3147{
c26a8016
LC		 3148 struct list_head *q, *n;
3149 struct pktgen_dev *cur;
222f1806 3150
f9467eae
JP		 3151 func_enter();
3152
222f1806 3153 /* Remove all devices, free mem */
95ed63f7 3154
222f1806 3155 if_lock(t);
1da177e4 3156
c26a8016
LC		 3157 list_for_each_safe(q, n, &t->if_list) {
3158 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3159
86dc1ad2 3160 kfree_skb(cur->skb);
95ed63f7
AK		 3161 cur->skb = NULL;
3162
1da177e4
LT		 3163 pktgen_remove_device(t, cur);
3164 }
3165
222f1806 3166 if_unlock(t);
1da177e4
LT		 3167}
3168
222f1806 3169static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3170{
222f1806 3171 /* Remove from the thread list */
1da177e4 3172
ee74baa7 3173 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3174
1da177e4
LT		 3175}
3176
ef87979c 3177static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3178{
fd29cf72 3179 ktime_t idle_start = ktime_now();
ef87979c
SH		 3180 schedule();
3181 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3182}
3791decb 3183
ef87979c
SH		 3184static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3185{
3186 ktime_t idle_start = ktime_now();
3791decb 3187
ef87979c
SH		 3188 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3189 if (signal_pending(current))
3190 break;
3191
3192 if (need_resched())
3193 pktgen_resched(pkt_dev);
3194 else
3195 cpu_relax();
3196 }
fd29cf72 3197 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3198}
3199
475ac1e4 3200static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3201{
00829823 3202 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3203 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3204 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3205 struct netdev_queue *txq;
fd2ea0a7 3206 u16 queue_map;
1da177e4
LT		 3207 int ret;
3208
ef87979c
SH		 3209 /* If device is offline, then don't send */
3210 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3211 pktgen_stop_device(pkt_dev);
3212 return;
fd2ea0a7
DM		 3213 }
3214
ef87979c
SH		 3215 /* This is max DELAY, this has special meaning of
3216 * "never transmit"
3217 */
3218 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3219 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3220 return;
1da177e4 3221 }
222f1806 3222
ef87979c 3223 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3224 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3225 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3226 /* build a new pkt */
3227 kfree_skb(pkt_dev->skb);
3228
3229 pkt_dev->skb = fill_packet(odev, pkt_dev);
3230 if (pkt_dev->skb == NULL) {
f9467eae 3231 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3232 schedule();
3233 pkt_dev->clone_count--; /* back out increment, OOM */
3234 return;
1da177e4 3235 }
baac8564 3236 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3237 pkt_dev->allocated_skbs++;
3238 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3239 }
95ed63f7 3240
ef87979c
SH		 3241 if (pkt_dev->delay && pkt_dev->last_ok)
3242 spin(pkt_dev, pkt_dev->next_tx);
3243
fd2ea0a7
DM		 3244 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3245 txq = netdev_get_tx_queue(odev, queue_map);
3246
3247 __netif_tx_lock_bh(txq);
5b8db2f5 3248
73466498 3249 if (unlikely(netif_xmit_frozen_or_stopped(txq))) {
ef87979c 3250 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3251 pkt_dev->last_ok = 0;
3252 goto unlock;
3253 }
3254 atomic_inc(&(pkt_dev->skb->users));
3255 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3256
3257 switch (ret) {
3258 case NETDEV_TX_OK:
3259 txq_trans_update(txq);
3260 pkt_dev->last_ok = 1;
3261 pkt_dev->sofar++;
3262 pkt_dev->seq_num++;
baac8564 3263 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3264 break;
f466dba1
JF		 3265 case NET_XMIT_DROP:
3266 case NET_XMIT_CN:
3267 case NET_XMIT_POLICED:
3268 /* skb has been consumed */
3269 pkt_dev->errors++;
3270 break;
ef87979c 3271 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3272 net_info_ratelimited("%s xmit error: %d\n",
3273 pkt_dev->odevname, ret);
ef87979c
SH		 3274 pkt_dev->errors++;
3275 /* fallthru */
3276 case NETDEV_TX_LOCKED:
3277 case NETDEV_TX_BUSY:
3278 /* Retry it next time */
3279 atomic_dec(&(pkt_dev->skb->users));
3280 pkt_dev->last_ok = 0;
222f1806 3281 }
0835acfe 3282unlock:
fd2ea0a7 3283 __netif_tx_unlock_bh(txq);
222f1806 3284
1da177e4
LT		 3285 /* If pkt_dev->count is zero, then run forever */
3286 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3287 pktgen_wait_for_skb(pkt_dev);
222f1806 3288
1da177e4
LT		 3289 /* Done with this */
3290 pktgen_stop_device(pkt_dev);
222f1806 3291 }
222f1806 3292}
1da177e4 3293
4ec93edb 3294/*
1da177e4
LT		 3295 * Main loop of the thread goes here
3296 */
3297
ee74baa7 3298static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3299{
3300 DEFINE_WAIT(wait);
ee74baa7 3301 struct pktgen_thread *t = arg;
222f1806 3302 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3303 int cpu = t->cpu;
1da177e4 3304
ee74baa7 3305 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3306
3307 init_waitqueue_head(&t->queue);
d3ede327 3308 complete(&t->start_done);
1da177e4 3309
f9467eae 3310 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3311
ee74baa7 3312 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3313
83144186
RW		 3314 set_freezable();
3315
ee74baa7
DM		 3316 while (!kthread_should_stop()) {
3317 pkt_dev = next_to_run(t);
1da177e4 3318
ef87979c 3319 if (unlikely(!pkt_dev && t->control == 0)) {
551eaff1
ED		 3320 if (pktgen_exiting)
3321 break;
ef87979c
SH		 3322 wait_event_interruptible_timeout(t->queue,
3323 t->control != 0,
3324 HZ/10);
1b3f720b 3325 try_to_freeze();
ef87979c 3326 continue;
ee74baa7 3327 }
1da177e4 3328
ee74baa7 3329 __set_current_state(TASK_RUNNING);
222f1806 3330
ef87979c 3331 if (likely(pkt_dev)) {
1da177e4
LT		 3332 pktgen_xmit(pkt_dev);
3333
ef87979c
SH		 3334 if (need_resched())
3335 pktgen_resched(pkt_dev);
3336 else
3337 cpu_relax();
3338 }
3339
222f1806 3340 if (t->control & T_STOP) {
1da177e4
LT		 3341 pktgen_stop(t);
3342 t->control &= ~(T_STOP);
3343 }
3344
222f1806 3345 if (t->control & T_RUN) {
1da177e4
LT		 3346 pktgen_run(t);
3347 t->control &= ~(T_RUN);
3348 }
3349
222f1806 3350 if (t->control & T_REMDEVALL) {
1da177e4 3351 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3352 t->control &= ~(T_REMDEVALL);
3353 }
3354
222f1806 3355 if (t->control & T_REMDEV) {
95ed63f7 3356 pktgen_rem_one_if(t);
1da177e4
LT		 3357 t->control &= ~(T_REMDEV);
3358 }
3359
09fe3ef4
AM		 3360 try_to_freeze();
3361
ee74baa7 3362 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3363 }
1da177e4 3364
f9467eae 3365 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3366 pktgen_stop(t);
1da177e4 3367
f9467eae 3368 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3369 pktgen_rem_all_ifs(t);
1da177e4 3370
f9467eae 3371 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3372 pktgen_rem_thread(t);
cdcdbe0b 3373
551eaff1
ED		 3374 /* Wait for kthread_stop */
3375 while (!kthread_should_stop()) {
3376 set_current_state(TASK_INTERRUPTIBLE);
3377 schedule();
3378 }
3379 __set_current_state(TASK_RUNNING);
3380
ee74baa7 3381 return 0;
1da177e4
LT		 3382}
3383
222f1806 3384static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3385 const char *ifname, bool exact)
1da177e4 3386{
c26a8016 3387 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3388 size_t len = strlen(ifname);
222f1806 3389
3e984840 3390 if_lock(t);
c26a8016 3391 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3392 if (strncmp(p->odevname, ifname, len) == 0) {
3393 if (p->odevname[len]) {
3394 if (exact || p->odevname[len] != '@')
3395 continue;
3396 }
c26a8016 3397 pkt_dev = p;
222f1806
LC		 3398 break;
3399 }
222f1806
LC		 3400
3401 if_unlock(t);
f9467eae 3402 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3403 return pkt_dev;
1da177e4
LT		 3404}
3405
4ec93edb
YH		 3406/*
3407 * Adds a dev at front of if_list.
1da177e4
LT		 3408 */
3409
222f1806
LC		 3410static int add_dev_to_thread(struct pktgen_thread *t,
3411 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3412{
3413 int rv = 0;
222f1806
LC		 3414
3415 if_lock(t);
3416
3417 if (pkt_dev->pg_thread) {
f9467eae 3418 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3419 rv = -EBUSY;
3420 goto out;
3421 }
c26a8016
LC		 3422
3423 list_add(&pkt_dev->list, &t->if_list);
222f1806 3424 pkt_dev->pg_thread = t;
1da177e4
LT		 3425 pkt_dev->running = 0;
3426
222f1806
LC		 3427out:
3428 if_unlock(t);
3429 return rv;
1da177e4
LT		 3430}
3431
3432/* Called under thread lock */
3433
222f1806 3434static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3435{
222f1806 3436 struct pktgen_dev *pkt_dev;
39df232f 3437 int err;
3291b9db 3438 int node = cpu_to_node(t->cpu);
222f1806 3439
1da177e4
LT		 3440 /* We don't allow a device to be on several threads */
3441
d50a6b56
SH		 3442 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3443 if (pkt_dev) {
f9467eae 3444 pr_err("ERROR: interface already used\n");
222f1806
LC		 3445 return -EBUSY;
3446 }
d50a6b56 3447
3291b9db 3448 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3449 if (!pkt_dev)
3450 return -ENOMEM;
3451
593f63b0 3452 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3453 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3454 node);
d50a6b56
SH		 3455 if (pkt_dev->flows == NULL) {
3456 kfree(pkt_dev);
3457 return -ENOMEM;
3458 }
d50a6b56 3459
95ed63f7 3460 pkt_dev->removal_mark = 0;
d50a6b56 3461 pkt_dev->nfrags = 0;
fd29cf72 3462 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3463 pkt_dev->count = pg_count_d;
3464 pkt_dev->sofar = 0;
222f1806 3465 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3466 pkt_dev->udp_src_max = 9;
3467 pkt_dev->udp_dst_min = 9;
3468 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3469 pkt_dev->vlan_p = 0;
3470 pkt_dev->vlan_cfi = 0;
3471 pkt_dev->vlan_id = 0xffff;
3472 pkt_dev->svlan_p = 0;
3473 pkt_dev->svlan_cfi = 0;
3474 pkt_dev->svlan_id = 0xffff;
e99b99b4 3475 pkt_dev->node = -1;
34954ddc 3476
39df232f
SH		 3477 err = pktgen_setup_dev(pkt_dev, ifname);
3478 if (err)
3479 goto out1;
d8873315
NH		 3480 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3481 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3482
5efdccbc
DL		 3483 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3484 &pktgen_if_fops, pkt_dev);
39df232f 3485 if (!pkt_dev->entry) {
f9467eae 3486 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3487 PG_PROC_DIR, ifname);
39df232f
SH		 3488 err = -EINVAL;
3489 goto out2;
d50a6b56 3490 }
a553e4a6
JHS		 3491#ifdef CONFIG_XFRM
3492 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3493 pkt_dev->ipsproto = IPPROTO_ESP;
3494#endif
d50a6b56
SH		 3495
3496 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3497out2:
3498 dev_put(pkt_dev->odev);
3499out1:
a553e4a6
JHS		 3500#ifdef CONFIG_XFRM
3501 free_SAs(pkt_dev);
3502#endif
1d0ebfe7 3503 vfree(pkt_dev->flows);
39df232f
SH		 3504 kfree(pkt_dev);
3505 return err;
1da177e4
LT		 3506}
3507
ee74baa7 3508static int __init pktgen_create_thread(int cpu)
1da177e4 3509{
cdcdbe0b 3510 struct pktgen_thread *t;
d50a6b56 3511 struct proc_dir_entry *pe;
ee74baa7 3512 struct task_struct *p;
222f1806 3513
3291b9db
ED		 3514 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3515 cpu_to_node(cpu));
222f1806 3516 if (!t) {
f9467eae 3517 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3518 return -ENOMEM;
3519 }
3520
222f1806 3521 spin_lock_init(&t->if_lock);
1da177e4 3522 t->cpu = cpu;
222f1806 3523
ee74baa7
DM		 3524 INIT_LIST_HEAD(&t->if_list);
3525
3526 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3527 init_completion(&t->start_done);
ee74baa7 3528
94dcf29a
ED		 3529 p = kthread_create_on_node(pktgen_thread_worker,
3530 t,
3531 cpu_to_node(cpu),
3532 "kpktgend_%d", cpu);
ee74baa7 3533 if (IS_ERR(p)) {
f9467eae 3534 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3535 list_del(&t->th_list);
3536 kfree(t);
3537 return PTR_ERR(p);
3538 }
3539 kthread_bind(p, cpu);
3540 t->tsk = p;
3541
5efdccbc
DL		 3542 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3543 &pktgen_thread_fops, t);
222f1806 3544 if (!pe) {
f9467eae 3545 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3546 PG_PROC_DIR, t->tsk->comm);
3547 kthread_stop(p);
3548 list_del(&t->th_list);
222f1806
LC		 3549 kfree(t);
3550 return -EINVAL;
3551 }
d50a6b56 3552
ee74baa7 3553 wake_up_process(p);
d3ede327 3554 wait_for_completion(&t->start_done);
1da177e4
LT		 3555
3556 return 0;
3557}
3558
4ec93edb
YH		 3559/*
3560 * Removes a device from the thread if_list.
1da177e4 3561 */
222f1806
LC		 3562static void _rem_dev_from_if_list(struct pktgen_thread *t,
3563 struct pktgen_dev *pkt_dev)
1da177e4 3564{
c26a8016
LC		 3565 struct list_head *q, *n;
3566 struct pktgen_dev *p;
1da177e4 3567
c26a8016
LC		 3568 list_for_each_safe(q, n, &t->if_list) {
3569 p = list_entry(q, struct pktgen_dev, list);
3570 if (p == pkt_dev)
3571 list_del(&p->list);
1da177e4
LT		 3572 }
3573}
3574
222f1806
LC		 3575static int pktgen_remove_device(struct pktgen_thread *t,
3576 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3577{
3578
f9467eae 3579 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3580
222f1806 3581 if (pkt_dev->running) {
f9467eae 3582 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3583 pktgen_stop_device(pkt_dev);
3584 }
3585
3586 /* Dis-associate from the interface */
1da177e4
LT		 3587
3588 if (pkt_dev->odev) {
3589 dev_put(pkt_dev->odev);
222f1806
LC		 3590 pkt_dev->odev = NULL;
3591 }
3592
1da177e4
LT		 3593 /* And update the thread if_list */
3594
3595 _rem_dev_from_if_list(t, pkt_dev);
3596
39df232f
SH		 3597 if (pkt_dev->entry)
3598 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3599
a553e4a6
JHS		 3600#ifdef CONFIG_XFRM
3601 free_SAs(pkt_dev);
3602#endif
1d0ebfe7 3603 vfree(pkt_dev->flows);
26ad7879
ED		 3604 if (pkt_dev->page)
3605 put_page(pkt_dev->page);
1da177e4 3606 kfree(pkt_dev);
222f1806 3607 return 0;
1da177e4
LT		 3608}
3609
222f1806 3610static int __init pg_init(void)
1da177e4
LT		 3611{
3612 int cpu;
d50a6b56 3613 struct proc_dir_entry *pe;
ce14f894 3614 int ret = 0;
1da177e4 3615
f9467eae 3616 pr_info("%s", version);
1da177e4 3617
457c4cbc 3618 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3619 if (!pg_proc_dir)
3620 return -ENODEV;
1da177e4 3621
25296d59 3622 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3623 if (pe == NULL) {
f9467eae 3624 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
ce14f894
WC		 3625 ret = -EINVAL;
3626 goto remove_dir;
222f1806 3627 }
1da177e4 3628
1da177e4 3629 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3630
670c02c2 3631 for_each_online_cpu(cpu) {
8024bb24 3632 int err;
1da177e4 3633
ee74baa7 3634 err = pktgen_create_thread(cpu);
8024bb24 3635 if (err)
f9467eae
JP		 3636 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3637 cpu, err);
222f1806 3638 }
8024bb24
LC		 3639
3640 if (list_empty(&pktgen_threads)) {
f9467eae 3641 pr_err("ERROR: Initialization failed for all threads\n");
ce14f894
WC		 3642 ret = -ENODEV;
3643 goto unregister;
8024bb24
LC		 3644 }
3645
222f1806 3646 return 0;
ce14f894
WC		 3647
3648 unregister:
3649 unregister_netdevice_notifier(&pktgen_notifier_block);
3650 remove_proc_entry(PGCTRL, pg_proc_dir);
3651 remove_dir:
3652 proc_net_remove(&init_net, PG_PROC_DIR);
3653 return ret;
1da177e4
LT		 3654}
3655
3656static void __exit pg_cleanup(void)
3657{
cdcdbe0b
LC		 3658 struct pktgen_thread *t;
3659 struct list_head *q, *n;
d4b11335 3660 LIST_HEAD(list);
1da177e4 3661
222f1806 3662 /* Stop all interfaces & threads */
551eaff1 3663 pktgen_exiting = true;
1da177e4 3664
c57b5468 3665 mutex_lock(&pktgen_thread_lock);
d4b11335 3666 list_splice_init(&pktgen_threads, &list);
c57b5468
ED		 3667 mutex_unlock(&pktgen_thread_lock);
3668
3669 list_for_each_safe(q, n, &list) {
cdcdbe0b 3670 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3671 list_del(&t->th_list);
ee74baa7
DM		 3672 kthread_stop(t->tsk);
3673 kfree(t);
222f1806 3674 }
1da177e4 3675
222f1806 3676 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3677 unregister_netdevice_notifier(&pktgen_notifier_block);
3678
222f1806 3679 /* Clean up proc file system */
d50a6b56 3680 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3681 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3682}
3683
1da177e4
LT		 3684module_init(pg_init);
3685module_exit(pg_cleanup);
3686
c3d2f52d 3687MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3688MODULE_DESCRIPTION("Packet Generator tool");
3689MODULE_LICENSE("GPL");
c3d2f52d 3690MODULE_VERSION(VERSION);
1da177e4 3691module_param(pg_count_d, int, 0);
c3d2f52d 3692MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3693module_param(pg_delay_d, int, 0);
c3d2f52d 3694MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3695module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3696MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3697module_param(debug, int, 0);
c3d2f52d 3698MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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