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net: optimize Berkeley Packet Filter (BPF) processing
[net-next-2.6.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4
LT		 117 */
118#include <linux/sys.h>
119#include <linux/types.h>
120#include <linux/module.h>
121#include <linux/moduleparam.h>
122#include <linux/kernel.h>
222fa076 123#include <linux/mutex.h>
1da177e4
LT		 124#include <linux/sched.h>
125#include <linux/slab.h>
126#include <linux/vmalloc.h>
1da177e4
LT		 127#include <linux/unistd.h>
128#include <linux/string.h>
129#include <linux/ptrace.h>
130#include <linux/errno.h>
131#include <linux/ioport.h>
132#include <linux/interrupt.h>
4fc268d2 133#include <linux/capability.h>
2bc481cf 134#include <linux/hrtimer.h>
09fe3ef4 135#include <linux/freezer.h>
1da177e4
LT		 136#include <linux/delay.h>
137#include <linux/timer.h>
cdcdbe0b 138#include <linux/list.h>
1da177e4
LT		 139#include <linux/init.h>
140#include <linux/skbuff.h>
141#include <linux/netdevice.h>
142#include <linux/inet.h>
143#include <linux/inetdevice.h>
144#include <linux/rtnetlink.h>
145#include <linux/if_arp.h>
34954ddc 146#include <linux/if_vlan.h>
1da177e4
LT		 147#include <linux/in.h>
148#include <linux/ip.h>
149#include <linux/ipv6.h>
150#include <linux/udp.h>
151#include <linux/proc_fs.h>
d50a6b56 152#include <linux/seq_file.h>
1da177e4 153#include <linux/wait.h>
f404e9a6 154#include <linux/etherdevice.h>
ee74baa7 155#include <linux/kthread.h>
457c4cbc 156#include <net/net_namespace.h>
1da177e4
LT		 157#include <net/checksum.h>
158#include <net/ipv6.h>
159#include <net/addrconf.h>
a553e4a6
JHS		 160#ifdef CONFIG_XFRM
161#include <net/xfrm.h>
162#endif
1da177e4
LT		 163#include <asm/byteorder.h>
164#include <linux/rcupdate.h>
1977f032 165#include <linux/bitops.h>
63adc6fb
SH		 166#include <linux/io.h>
167#include <linux/timex.h>
168#include <linux/uaccess.h>
1da177e4 169#include <asm/dma.h>
222f1806 170#include <asm/div64.h> /* do_div */
1da177e4 171
43d28b65 172#define VERSION "2.74"
1da177e4 173#define IP_NAME_SZ 32
ca6549af 174#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 175#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4
LT		 176
177/* Device flag bits */
222f1806
LC		 178#define F_IPSRC_RND (1<<0) /* IP-Src Random */
179#define F_IPDST_RND (1<<1) /* IP-Dst Random */
180#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
181#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
182#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
183#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
184#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
185#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 186#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 187#define F_VID_RND (1<<9) /* Random VLAN ID */
188#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 189#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 190#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 191#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 192#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 193#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 194
195/* Thread control flag bits */
6b80d6a6
SH		 196#define T_STOP (1<<0) /* Stop run */
197#define T_RUN (1<<1) /* Start run */
198#define T_REMDEVALL (1<<2) /* Remove all devs */
199#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 200
1da177e4
LT		 201/* If lock -- can be removed after some work */
202#define if_lock(t) spin_lock(&(t->if_lock));
203#define if_unlock(t) spin_unlock(&(t->if_lock));
204
205/* Used to help with determining the pkts on receive */
206#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 207#define PG_PROC_DIR "pktgen"
208#define PGCTRL "pgctrl"
63adc6fb 209static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 210
211#define MAX_CFLOWS 65536
212
34954ddc
FF		 213#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
214#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
215
222f1806 216struct flow_state {
252e3346 217 __be32 cur_daddr;
222f1806 218 int count;
a553e4a6
JHS		 219#ifdef CONFIG_XFRM
220 struct xfrm_state *x;
221#endif
007a531b 222 __u32 flags;
1da177e4
LT		 223};
224
007a531b
JHS		 225/* flow flag bits */
226#define F_INIT (1<<0) /* flow has been initialized */
227
1da177e4 228struct pktgen_dev {
1da177e4
LT		 229 /*
230 * Try to keep frequent/infrequent used vars. separated.
231 */
39df232f
SH		 232 struct proc_dir_entry *entry; /* proc file */
233 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 234 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 235
63adc6fb 236 int running; /* if false, the test will stop */
1da177e4 237
222f1806
LC		 238 /* If min != max, then we will either do a linear iteration, or
239 * we will do a random selection from within the range.
240 */
241 __u32 flags;
95ed63f7
AK		 242 int removal_mark; /* non-zero => the device is marked for
243 * removal by worker thread */
1da177e4 244
222f1806
LC		 245 int min_pkt_size; /* = ETH_ZLEN; */
246 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 247 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 248 int nfrags;
fd29cf72
SH		 249 u64 delay; /* nano-seconds */
250
222f1806
LC		 251 __u64 count; /* Default No packets to send */
252 __u64 sofar; /* How many pkts we've sent so far */
253 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 254 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 255
256 /* runtime counters relating to clone_skb */
222f1806
LC		 257
258 __u64 allocated_skbs;
259 __u32 clone_count;
260 int last_ok; /* Was last skb sent?
63adc6fb
SH		 261 * Or a failed transmit of some sort?
262 * This will keep sequence numbers in order
222f1806 263 */
fd29cf72
SH		 264 ktime_t next_tx;
265 ktime_t started_at;
266 ktime_t stopped_at;
267 u64 idle_acc; /* nano-seconds */
268
222f1806
LC		 269 __u32 seq_num;
270
63adc6fb
SH		 271 int clone_skb; /*
272 * Use multiple SKBs during packet gen.
273 * If this number is greater than 1, then
274 * that many copies of the same packet will be
275 * sent before a new packet is allocated.
276 * If you want to send 1024 identical packets
277 * before creating a new packet,
278 * set clone_skb to 1024.
222f1806
LC		 279 */
280
281 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
282 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
283 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
284 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
285
286 struct in6_addr in6_saddr;
287 struct in6_addr in6_daddr;
288 struct in6_addr cur_in6_daddr;
289 struct in6_addr cur_in6_saddr;
1da177e4 290 /* For ranges */
222f1806
LC		 291 struct in6_addr min_in6_daddr;
292 struct in6_addr max_in6_daddr;
293 struct in6_addr min_in6_saddr;
294 struct in6_addr max_in6_saddr;
295
296 /* If we're doing ranges, random or incremental, then this
297 * defines the min/max for those ranges.
298 */
252e3346
AV		 299 __be32 saddr_min; /* inclusive, source IP address */
300 __be32 saddr_max; /* exclusive, source IP address */
301 __be32 daddr_min; /* inclusive, dest IP address */
302 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 303
304 __u16 udp_src_min; /* inclusive, source UDP port */
305 __u16 udp_src_max; /* exclusive, source UDP port */
306 __u16 udp_dst_min; /* inclusive, dest UDP port */
307 __u16 udp_dst_max; /* exclusive, dest UDP port */
308
1ca7768c 309 /* DSCP + ECN */
63adc6fb
SH		 310 __u8 tos; /* six MSB of (former) IPv4 TOS
311 are for dscp codepoint */
312 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
313 (see RFC 3260, sec. 4) */
1ca7768c 314
ca6549af
SW		 315 /* MPLS */
316 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
317 __be32 labels[MAX_MPLS_LABELS];
318
34954ddc
FF		 319 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
320 __u8 vlan_p;
321 __u8 vlan_cfi;
322 __u16 vlan_id; /* 0xffff means no vlan tag */
323
324 __u8 svlan_p;
325 __u8 svlan_cfi;
326 __u16 svlan_id; /* 0xffff means no svlan tag */
327
222f1806
LC		 328 __u32 src_mac_count; /* How many MACs to iterate through */
329 __u32 dst_mac_count; /* How many MACs to iterate through */
330
331 unsigned char dst_mac[ETH_ALEN];
332 unsigned char src_mac[ETH_ALEN];
333
334 __u32 cur_dst_mac_offset;
335 __u32 cur_src_mac_offset;
252e3346
AV		 336 __be32 cur_saddr;
337 __be32 cur_daddr;
66ed1e5e 338 __u16 ip_id;
222f1806
LC		 339 __u16 cur_udp_dst;
340 __u16 cur_udp_src;
45b270f8 341 __u16 cur_queue_map;
222f1806 342 __u32 cur_pkt_size;
baac8564 343 __u32 last_pkt_size;
222f1806
LC		 344
345 __u8 hh[14];
346 /* = {
347 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
348
349 We fill in SRC address later
350 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
351 0x08, 0x00
352 };
353 */
354 __u16 pad; /* pad out the hh struct to an even 16 bytes */
355
63adc6fb 356 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 357 * are transmitting the same one multiple times
358 */
63adc6fb
SH		 359 struct net_device *odev; /* The out-going device.
360 * Note that the device should have it's
361 * pg_info pointer pointing back to this
362 * device.
363 * Set when the user specifies the out-going
364 * device name (not when the inject is
365 * started as it used to do.)
366 */
593f63b0 367 char odevname[32];
1da177e4 368 struct flow_state *flows;
222f1806
LC		 369 unsigned cflows; /* Concurrent flows (config) */
370 unsigned lflow; /* Flow length (config) */
371 unsigned nflows; /* accumulated flows (stats) */
007a531b 372 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 373
374 u16 queue_map_min;
375 u16 queue_map_max;
e99b99b4 376 int node; /* Memory node */
45b270f8 377
a553e4a6
JHS		 378#ifdef CONFIG_XFRM
379 __u8 ipsmode; /* IPSEC mode (config) */
380 __u8 ipsproto; /* IPSEC type (config) */
381#endif
39df232f 382 char result[512];
1da177e4
LT		 383};
384
385struct pktgen_hdr {
252e3346
AV		 386 __be32 pgh_magic;
387 __be32 seq_num;
388 __be32 tv_sec;
389 __be32 tv_usec;
1da177e4
LT		 390};
391
392struct pktgen_thread {
63adc6fb 393 spinlock_t if_lock; /* for list of devices */
c26a8016 394 struct list_head if_list; /* All device here */
cdcdbe0b 395 struct list_head th_list;
ee74baa7 396 struct task_struct *tsk;
222f1806 397 char result[512];
222f1806 398
63adc6fb
SH		 399 /* Field for thread to receive "posted" events terminate,
400 stop ifs etc. */
222f1806
LC		 401
402 u32 control;
1da177e4
LT		 403 int cpu;
404
222f1806 405 wait_queue_head_t queue;
d3ede327 406 struct completion start_done;
1da177e4
LT		 407};
408
409#define REMOVE 1
410#define FIND 0
411
fd29cf72 412static inline ktime_t ktime_now(void)
1da177e4 413{
fd29cf72
SH		 414 struct timespec ts;
415 ktime_get_ts(&ts);
416
417 return timespec_to_ktime(ts);
1da177e4
LT		 418}
419
fd29cf72
SH		 420/* This works even if 32 bit because of careful byte order choice */
421static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 422{
fd29cf72 423 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 424}
425
c3d2f52d
SH		 426static const char version[] =
427 "pktgen " VERSION ": Packet Generator for packet performance testing.\n";
1da177e4 428
222f1806
LC		 429static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
430static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
431static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 432 const char *ifname, bool exact);
1da177e4
LT		 433static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
434static void pktgen_run_all_threads(void);
eb37b41c 435static void pktgen_reset_all_threads(void);
1da177e4 436static void pktgen_stop_all_threads_ifs(void);
3bda06a3 437
222f1806 438static void pktgen_stop(struct pktgen_thread *t);
1da177e4 439static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 440
222f1806
LC		 441static unsigned int scan_ip6(const char *s, char ip[16]);
442static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 443
444/* Module parameters, defaults. */
65c5b786
SH		 445static int pg_count_d __read_mostly = 1000;
446static int pg_delay_d __read_mostly;
447static int pg_clone_skb_d __read_mostly;
448static int debug __read_mostly;
1da177e4 449
222fa076 450static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 451static LIST_HEAD(pktgen_threads);
1da177e4 452
1da177e4
LT		 453static struct notifier_block pktgen_notifier_block = {
454 .notifier_call = pktgen_device_event,
455};
456
1da177e4 457/*
4ec93edb 458 * /proc handling functions
1da177e4
LT		 459 *
460 */
461
d50a6b56 462static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 463{
c3d2f52d 464 seq_puts(seq, version);
d50a6b56 465 return 0;
1da177e4
LT		 466}
467
63adc6fb
SH		 468static ssize_t pgctrl_write(struct file *file, const char __user *buf,
469 size_t count, loff_t *ppos)
1da177e4 470{
1da177e4 471 int err = 0;
d50a6b56 472 char data[128];
1da177e4 473
222f1806
LC		 474 if (!capable(CAP_NET_ADMIN)) {
475 err = -EPERM;
1da177e4 476 goto out;
222f1806 477 }
1da177e4 478
d50a6b56
SH		 479 if (count > sizeof(data))
480 count = sizeof(data);
1da177e4 481
1da177e4 482 if (copy_from_user(data, buf, count)) {
b4099fab 483 err = -EFAULT;
d50a6b56 484 goto out;
222f1806
LC		 485 }
486 data[count - 1] = 0; /* Make string */
1da177e4 487
222f1806 488 if (!strcmp(data, "stop"))
1da177e4
LT		 489 pktgen_stop_all_threads_ifs();
490
222f1806 491 else if (!strcmp(data, "start"))
1da177e4
LT		 492 pktgen_run_all_threads();
493
eb37b41c
JB		 494 else if (!strcmp(data, "reset"))
495 pktgen_reset_all_threads();
496
222f1806 497 else
25a8b254 498 printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
1da177e4
LT		 499
500 err = count;
501
222f1806
LC		 502out:
503 return err;
1da177e4
LT		 504}
505
d50a6b56
SH		 506static int pgctrl_open(struct inode *inode, struct file *file)
507{
508 return single_open(file, pgctrl_show, PDE(inode)->data);
509}
510
9a32144e 511static const struct file_operations pktgen_fops = {
222f1806
LC		 512 .owner = THIS_MODULE,
513 .open = pgctrl_open,
514 .read = seq_read,
515 .llseek = seq_lseek,
516 .write = pgctrl_write,
517 .release = single_release,
d50a6b56
SH		 518};
519
520static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 521{
648fda74 522 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 523 ktime_t stopped;
524 u64 idle;
222f1806
LC		 525
526 seq_printf(seq,
527 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
528 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
529 pkt_dev->max_pkt_size);
530
531 seq_printf(seq,
fd29cf72
SH		 532 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
533 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 534 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 535
536 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
537 pkt_dev->lflow);
538
45b270f8
RO		 539 seq_printf(seq,
540 " queue_map_min: %u queue_map_max: %u\n",
541 pkt_dev->queue_map_min,
542 pkt_dev->queue_map_max);
543
222f1806
LC		 544 if (pkt_dev->flags & F_IPV6) {
545 char b1[128], b2[128], b3[128];
546 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
547 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
548 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
549 seq_printf(seq,
550 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
551 b2, b3);
552
553 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
554 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
555 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
556 seq_printf(seq,
557 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
558 b2, b3);
559
63adc6fb
SH		 560 } else {
561 seq_printf(seq,
562 " dst_min: %s dst_max: %s\n",
563 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 564 seq_printf(seq,
63adc6fb
SH		 565 " src_min: %s src_max: %s\n",
566 pkt_dev->src_min, pkt_dev->src_max);
567 }
1da177e4 568
222f1806 569 seq_puts(seq, " src_mac: ");
1da177e4 570
e174961c
JB		 571 seq_printf(seq, "%pM ",
572 is_zero_ether_addr(pkt_dev->src_mac) ?
573 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 574
575 seq_printf(seq, "dst_mac: ");
e174961c 576 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 577
578 seq_printf(seq,
63adc6fb
SH		 579 " udp_src_min: %d udp_src_max: %d"
580 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 581 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
582 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
583
584 seq_printf(seq,
ca6549af 585 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 586 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 587
ca6549af
SW		 588 if (pkt_dev->nr_labels) {
589 unsigned i;
590 seq_printf(seq, " mpls: ");
e71a4783 591 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 592 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
593 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
594 }
595
63adc6fb 596 if (pkt_dev->vlan_id != 0xffff)
34954ddc 597 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 598 pkt_dev->vlan_id, pkt_dev->vlan_p,
599 pkt_dev->vlan_cfi);
34954ddc 600
63adc6fb 601 if (pkt_dev->svlan_id != 0xffff)
34954ddc 602 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 603 pkt_dev->svlan_id, pkt_dev->svlan_p,
604 pkt_dev->svlan_cfi);
34954ddc 605
63adc6fb 606 if (pkt_dev->tos)
1ca7768c 607 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 608
63adc6fb 609 if (pkt_dev->traffic_class)
1ca7768c 610 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 611
e99b99b4
RO		 612 if (pkt_dev->node >= 0)
613 seq_printf(seq, " node: %d\n", pkt_dev->node);
614
ca6549af
SW		 615 seq_printf(seq, " Flags: ");
616
222f1806
LC		 617 if (pkt_dev->flags & F_IPV6)
618 seq_printf(seq, "IPV6 ");
1da177e4 619
222f1806
LC		 620 if (pkt_dev->flags & F_IPSRC_RND)
621 seq_printf(seq, "IPSRC_RND ");
1da177e4 622
222f1806
LC		 623 if (pkt_dev->flags & F_IPDST_RND)
624 seq_printf(seq, "IPDST_RND ");
1da177e4 625
222f1806
LC		 626 if (pkt_dev->flags & F_TXSIZE_RND)
627 seq_printf(seq, "TXSIZE_RND ");
1da177e4 628
222f1806
LC		 629 if (pkt_dev->flags & F_UDPSRC_RND)
630 seq_printf(seq, "UDPSRC_RND ");
1da177e4 631
222f1806
LC		 632 if (pkt_dev->flags & F_UDPDST_RND)
633 seq_printf(seq, "UDPDST_RND ");
1da177e4 634
ca6549af
SW		 635 if (pkt_dev->flags & F_MPLS_RND)
636 seq_printf(seq, "MPLS_RND ");
637
45b270f8
RO		 638 if (pkt_dev->flags & F_QUEUE_MAP_RND)
639 seq_printf(seq, "QUEUE_MAP_RND ");
640
e6fce5b9
RO		 641 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
642 seq_printf(seq, "QUEUE_MAP_CPU ");
643
007a531b
JHS		 644 if (pkt_dev->cflows) {
645 if (pkt_dev->flags & F_FLOW_SEQ)
646 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
647 else
648 seq_printf(seq, "FLOW_RND ");
649 }
650
a553e4a6
JHS		 651#ifdef CONFIG_XFRM
652 if (pkt_dev->flags & F_IPSEC_ON)
653 seq_printf(seq, "IPSEC ");
654#endif
655
222f1806
LC		 656 if (pkt_dev->flags & F_MACSRC_RND)
657 seq_printf(seq, "MACSRC_RND ");
1da177e4 658
222f1806
LC		 659 if (pkt_dev->flags & F_MACDST_RND)
660 seq_printf(seq, "MACDST_RND ");
1da177e4 661
34954ddc
FF		 662 if (pkt_dev->flags & F_VID_RND)
663 seq_printf(seq, "VID_RND ");
664
665 if (pkt_dev->flags & F_SVID_RND)
666 seq_printf(seq, "SVID_RND ");
667
e99b99b4
RO		 668 if (pkt_dev->flags & F_NODE)
669 seq_printf(seq, "NODE_ALLOC ");
670
222f1806
LC		 671 seq_puts(seq, "\n");
672
fd29cf72
SH		 673 /* not really stopped, more like last-running-at */
674 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
675 idle = pkt_dev->idle_acc;
676 do_div(idle, NSEC_PER_USEC);
1da177e4 677
222f1806 678 seq_printf(seq,
fd29cf72 679 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 680 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 681 (unsigned long long)pkt_dev->errors);
682
683 seq_printf(seq,
684 " started: %lluus stopped: %lluus idle: %lluus\n",
685 (unsigned long long) ktime_to_us(pkt_dev->started_at),
686 (unsigned long long) ktime_to_us(stopped),
687 (unsigned long long) idle);
1da177e4 688
222f1806
LC		 689 seq_printf(seq,
690 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 691 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
692 pkt_dev->cur_src_mac_offset);
1da177e4 693
222f1806 694 if (pkt_dev->flags & F_IPV6) {
1da177e4 695 char b1[128], b2[128];
222f1806
LC		 696 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
697 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
698 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
699 } else
700 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 701 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 702
222f1806 703 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 704 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 705
45b270f8
RO		 706 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
707
222f1806 708 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 709
710 if (pkt_dev->result[0])
222f1806 711 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 712 else
222f1806 713 seq_printf(seq, "Result: Idle\n");
1da177e4 714
d50a6b56 715 return 0;
1da177e4
LT		 716}
717
ca6549af 718
63adc6fb
SH		 719static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
720 __u32 *num)
ca6549af
SW		 721{
722 int i = 0;
723 *num = 0;
724
e71a4783 725 for (; i < maxlen; i++) {
ca6549af
SW		 726 char c;
727 *num <<= 4;
728 if (get_user(c, &user_buffer[i]))
729 return -EFAULT;
730 if ((c >= '0') && (c <= '9'))
731 *num |= c - '0';
732 else if ((c >= 'a') && (c <= 'f'))
733 *num |= c - 'a' + 10;
734 else if ((c >= 'A') && (c <= 'F'))
735 *num |= c - 'A' + 10;
736 else
737 break;
738 }
739 return i;
740}
741
222f1806
LC		 742static int count_trail_chars(const char __user * user_buffer,
743 unsigned int maxlen)
1da177e4
LT		 744{
745 int i;
746
747 for (i = 0; i < maxlen; i++) {
222f1806
LC		 748 char c;
749 if (get_user(c, &user_buffer[i]))
750 return -EFAULT;
751 switch (c) {
1da177e4
LT		 752 case '\"':
753 case '\n':
754 case '\r':
755 case '\t':
756 case ' ':
757 case '=':
758 break;
759 default:
760 goto done;
3ff50b79 761 }
1da177e4
LT		 762 }
763done:
764 return i;
765}
766
222f1806
LC		 767static unsigned long num_arg(const char __user * user_buffer,
768 unsigned long maxlen, unsigned long *num)
1da177e4
LT		 769{
770 int i = 0;
771 *num = 0;
222f1806
LC		 772
773 for (; i < maxlen; i++) {
774 char c;
775 if (get_user(c, &user_buffer[i]))
776 return -EFAULT;
777 if ((c >= '0') && (c <= '9')) {
1da177e4 778 *num *= 10;
222f1806 779 *num += c - '0';
1da177e4
LT		 780 } else
781 break;
782 }
783 return i;
784}
785
222f1806 786static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4
LT		 787{
788 int i = 0;
789
222f1806
LC		 790 for (; i < maxlen; i++) {
791 char c;
792 if (get_user(c, &user_buffer[i]))
793 return -EFAULT;
794 switch (c) {
1da177e4
LT		 795 case '\"':
796 case '\n':
797 case '\r':
798 case '\t':
799 case ' ':
800 goto done_str;
801 break;
802 default:
803 break;
3ff50b79 804 }
1da177e4
LT		 805 }
806done_str:
1da177e4
LT		 807 return i;
808}
809
ca6549af
SW		 810static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
811{
812 unsigned n = 0;
813 char c;
814 ssize_t i = 0;
815 int len;
816
817 pkt_dev->nr_labels = 0;
818 do {
819 __u32 tmp;
1ca7768c 820 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 821 if (len <= 0)
822 return len;
823 pkt_dev->labels[n] = htonl(tmp);
824 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
825 pkt_dev->flags |= F_MPLS_RND;
826 i += len;
827 if (get_user(c, &buffer[i]))
828 return -EFAULT;
829 i++;
830 n++;
831 if (n >= MAX_MPLS_LABELS)
832 return -E2BIG;
e71a4783 833 } while (c == ',');
ca6549af
SW		 834
835 pkt_dev->nr_labels = n;
836 return i;
837}
838
222f1806
LC		 839static ssize_t pktgen_if_write(struct file *file,
840 const char __user * user_buffer, size_t count,
841 loff_t * offset)
1da177e4 842{
222f1806
LC		 843 struct seq_file *seq = (struct seq_file *)file->private_data;
844 struct pktgen_dev *pkt_dev = seq->private;
1da177e4
LT		 845 int i = 0, max, len;
846 char name[16], valstr[32];
847 unsigned long value = 0;
222f1806
LC		 848 char *pg_result = NULL;
849 int tmp = 0;
1da177e4 850 char buf[128];
222f1806
LC		 851
852 pg_result = &(pkt_dev->result[0]);
853
1da177e4 854 if (count < 1) {
25a8b254 855 printk(KERN_WARNING "pktgen: wrong command format\n");
1da177e4
LT		 856 return -EINVAL;
857 }
222f1806 858
1da177e4
LT		 859 max = count - i;
860 tmp = count_trail_chars(&user_buffer[i], max);
222f1806 861 if (tmp < 0) {
25a8b254 862 printk(KERN_WARNING "pktgen: illegal format\n");
222f1806 863 return tmp;
1da177e4 864 }
222f1806
LC		 865 i += tmp;
866
1da177e4
LT		 867 /* Read variable name */
868
869 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 870 if (len < 0)
222f1806 871 return len;
63adc6fb 872
1da177e4 873 memset(name, 0, sizeof(name));
222f1806 874 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 875 return -EFAULT;
876 i += len;
222f1806
LC		 877
878 max = count - i;
1da177e4 879 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 880 if (len < 0)
881 return len;
882
1da177e4
LT		 883 i += len;
884
885 if (debug) {
222f1806
LC		 886 char tb[count + 1];
887 if (copy_from_user(tb, user_buffer, count))
1da177e4 888 return -EFAULT;
222f1806 889 tb[count] = 0;
25a8b254 890 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 891 (unsigned long)count, tb);
892 }
1da177e4
LT		 893
894 if (!strcmp(name, "min_pkt_size")) {
895 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 896 if (len < 0)
222f1806 897 return len;
63adc6fb 898
1da177e4 899 i += len;
222f1806
LC		 900 if (value < 14 + 20 + 8)
901 value = 14 + 20 + 8;
902 if (value != pkt_dev->min_pkt_size) {
903 pkt_dev->min_pkt_size = value;
904 pkt_dev->cur_pkt_size = value;
905 }
906 sprintf(pg_result, "OK: min_pkt_size=%u",
907 pkt_dev->min_pkt_size);
1da177e4
LT		 908 return count;
909 }
910
222f1806 911 if (!strcmp(name, "max_pkt_size")) {
1da177e4 912 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 913 if (len < 0)
222f1806 914 return len;
63adc6fb 915
1da177e4 916 i += len;
222f1806
LC		 917 if (value < 14 + 20 + 8)
918 value = 14 + 20 + 8;
919 if (value != pkt_dev->max_pkt_size) {
920 pkt_dev->max_pkt_size = value;
921 pkt_dev->cur_pkt_size = value;
922 }
923 sprintf(pg_result, "OK: max_pkt_size=%u",
924 pkt_dev->max_pkt_size);
1da177e4
LT		 925 return count;
926 }
927
222f1806 928 /* Shortcut for min = max */
1da177e4
LT		 929
930 if (!strcmp(name, "pkt_size")) {
931 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 932 if (len < 0)
222f1806 933 return len;
63adc6fb 934
1da177e4 935 i += len;
222f1806
LC		 936 if (value < 14 + 20 + 8)
937 value = 14 + 20 + 8;
938 if (value != pkt_dev->min_pkt_size) {
939 pkt_dev->min_pkt_size = value;
940 pkt_dev->max_pkt_size = value;
941 pkt_dev->cur_pkt_size = value;
942 }
1da177e4
LT		 943 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
944 return count;
945 }
946
222f1806 947 if (!strcmp(name, "debug")) {
1da177e4 948 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 949 if (len < 0)
222f1806 950 return len;
63adc6fb 951
1da177e4 952 i += len;
222f1806 953 debug = value;
1da177e4
LT		 954 sprintf(pg_result, "OK: debug=%u", debug);
955 return count;
956 }
957
222f1806 958 if (!strcmp(name, "frags")) {
1da177e4 959 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 960 if (len < 0)
222f1806 961 return len;
63adc6fb 962
1da177e4
LT		 963 i += len;
964 pkt_dev->nfrags = value;
965 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
966 return count;
967 }
968 if (!strcmp(name, "delay")) {
969 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 970 if (len < 0)
222f1806 971 return len;
63adc6fb 972
1da177e4 973 i += len;
fd29cf72
SH		 974 if (value == 0x7FFFFFFF)
975 pkt_dev->delay = ULLONG_MAX;
976 else
9240d715 977 pkt_dev->delay = (u64)value;
fd29cf72
SH		 978
979 sprintf(pg_result, "OK: delay=%llu",
980 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 981 return count;
982 }
43d28b65
DT		 983 if (!strcmp(name, "rate")) {
984 len = num_arg(&user_buffer[i], 10, &value);
985 if (len < 0)
986 return len;
987
988 i += len;
989 if (!value)
990 return len;
991 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
992 if (debug)
993 printk(KERN_INFO
994 "pktgen: Delay set at: %llu ns\n",
995 pkt_dev->delay);
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)
1010 printk(KERN_INFO
1011 "pktgen: Delay set at: %llu ns\n",
1012 pkt_dev->delay);
1013
1014 sprintf(pg_result, "OK: rate=%lu", value);
1015 return count;
1016 }
222f1806 1017 if (!strcmp(name, "udp_src_min")) {
1da177e4 1018 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1019 if (len < 0)
222f1806 1020 return len;
63adc6fb 1021
1da177e4 1022 i += len;
222f1806
LC		 1023 if (value != pkt_dev->udp_src_min) {
1024 pkt_dev->udp_src_min = value;
1025 pkt_dev->cur_udp_src = value;
1026 }
1da177e4
LT		 1027 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1028 return count;
1029 }
222f1806 1030 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1031 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1032 if (len < 0)
222f1806 1033 return len;
63adc6fb 1034
1da177e4 1035 i += len;
222f1806
LC		 1036 if (value != pkt_dev->udp_dst_min) {
1037 pkt_dev->udp_dst_min = value;
1038 pkt_dev->cur_udp_dst = value;
1039 }
1da177e4
LT		 1040 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1041 return count;
1042 }
222f1806 1043 if (!strcmp(name, "udp_src_max")) {
1da177e4 1044 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1045 if (len < 0)
222f1806 1046 return len;
63adc6fb 1047
1da177e4 1048 i += len;
222f1806
LC		 1049 if (value != pkt_dev->udp_src_max) {
1050 pkt_dev->udp_src_max = value;
1051 pkt_dev->cur_udp_src = value;
1052 }
1da177e4
LT		 1053 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1054 return count;
1055 }
222f1806 1056 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1057 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1058 if (len < 0)
222f1806 1059 return len;
63adc6fb 1060
1da177e4 1061 i += len;
222f1806
LC		 1062 if (value != pkt_dev->udp_dst_max) {
1063 pkt_dev->udp_dst_max = value;
1064 pkt_dev->cur_udp_dst = value;
1065 }
1da177e4
LT		 1066 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1067 return count;
1068 }
1069 if (!strcmp(name, "clone_skb")) {
1070 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1071 if (len < 0)
222f1806 1072 return len;
63adc6fb 1073
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);
1129 }
1130 else
1131 sprintf(pg_result, "ERROR: node not possible");
1132 return count;
1133 }
1da177e4 1134 if (!strcmp(name, "flag")) {
222f1806
LC		 1135 char f[32];
1136 memset(f, 0, 32);
1da177e4 1137 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1138 if (len < 0)
222f1806 1139 return len;
63adc6fb 1140
1da177e4
LT		 1141 if (copy_from_user(f, &user_buffer[i], len))
1142 return -EFAULT;
1143 i += len;
222f1806
LC		 1144 if (strcmp(f, "IPSRC_RND") == 0)
1145 pkt_dev->flags |= F_IPSRC_RND;
1146
1147 else if (strcmp(f, "!IPSRC_RND") == 0)
1148 pkt_dev->flags &= ~F_IPSRC_RND;
1149
1150 else if (strcmp(f, "TXSIZE_RND") == 0)
1151 pkt_dev->flags |= F_TXSIZE_RND;
1152
1153 else if (strcmp(f, "!TXSIZE_RND") == 0)
1154 pkt_dev->flags &= ~F_TXSIZE_RND;
1155
1156 else if (strcmp(f, "IPDST_RND") == 0)
1157 pkt_dev->flags |= F_IPDST_RND;
1158
1159 else if (strcmp(f, "!IPDST_RND") == 0)
1160 pkt_dev->flags &= ~F_IPDST_RND;
1161
1162 else if (strcmp(f, "UDPSRC_RND") == 0)
1163 pkt_dev->flags |= F_UDPSRC_RND;
1164
1165 else if (strcmp(f, "!UDPSRC_RND") == 0)
1166 pkt_dev->flags &= ~F_UDPSRC_RND;
1167
1168 else if (strcmp(f, "UDPDST_RND") == 0)
1169 pkt_dev->flags |= F_UDPDST_RND;
1170
1171 else if (strcmp(f, "!UDPDST_RND") == 0)
1172 pkt_dev->flags &= ~F_UDPDST_RND;
1173
1174 else if (strcmp(f, "MACSRC_RND") == 0)
1175 pkt_dev->flags |= F_MACSRC_RND;
1176
1177 else if (strcmp(f, "!MACSRC_RND") == 0)
1178 pkt_dev->flags &= ~F_MACSRC_RND;
1179
1180 else if (strcmp(f, "MACDST_RND") == 0)
1181 pkt_dev->flags |= F_MACDST_RND;
1182
1183 else if (strcmp(f, "!MACDST_RND") == 0)
1184 pkt_dev->flags &= ~F_MACDST_RND;
1185
ca6549af
SW		 1186 else if (strcmp(f, "MPLS_RND") == 0)
1187 pkt_dev->flags |= F_MPLS_RND;
1188
1189 else if (strcmp(f, "!MPLS_RND") == 0)
1190 pkt_dev->flags &= ~F_MPLS_RND;
1191
34954ddc
FF		 1192 else if (strcmp(f, "VID_RND") == 0)
1193 pkt_dev->flags |= F_VID_RND;
1194
1195 else if (strcmp(f, "!VID_RND") == 0)
1196 pkt_dev->flags &= ~F_VID_RND;
1197
1198 else if (strcmp(f, "SVID_RND") == 0)
1199 pkt_dev->flags |= F_SVID_RND;
1200
1201 else if (strcmp(f, "!SVID_RND") == 0)
1202 pkt_dev->flags &= ~F_SVID_RND;
1203
007a531b
JHS		 1204 else if (strcmp(f, "FLOW_SEQ") == 0)
1205 pkt_dev->flags |= F_FLOW_SEQ;
1206
45b270f8
RO		 1207 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1208 pkt_dev->flags |= F_QUEUE_MAP_RND;
1209
1210 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1211 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1212
1213 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1214 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1215
1216 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1217 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1218#ifdef CONFIG_XFRM
1219 else if (strcmp(f, "IPSEC") == 0)
1220 pkt_dev->flags |= F_IPSEC_ON;
1221#endif
1222
1ca7768c
FF		 1223 else if (strcmp(f, "!IPV6") == 0)
1224 pkt_dev->flags &= ~F_IPV6;
1225
e99b99b4
RO		 1226 else if (strcmp(f, "NODE_ALLOC") == 0)
1227 pkt_dev->flags |= F_NODE;
1228
1229 else if (strcmp(f, "!NODE_ALLOC") == 0)
1230 pkt_dev->flags &= ~F_NODE;
1231
222f1806
LC		 1232 else {
1233 sprintf(pg_result,
1234 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1235 f,
1ca7768c 1236 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1237 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1238 return count;
1239 }
1da177e4
LT		 1240 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1241 return count;
1242 }
1243 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1244 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1245 if (len < 0)
222f1806 1246 return len;
1da177e4 1247
222f1806 1248 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1249 return -EFAULT;
222f1806
LC		 1250 buf[len] = 0;
1251 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1252 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1253 strncpy(pkt_dev->dst_min, buf, len);
1254 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1255 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1256 }
1257 if (debug)
25a8b254 1258 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1259 pkt_dev->dst_min);
1260 i += len;
1da177e4
LT		 1261 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1262 return count;
1263 }
1264 if (!strcmp(name, "dst_max")) {
1265 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1266 if (len < 0)
222f1806 1267 return len;
63adc6fb 1268
1da177e4 1269
222f1806 1270 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1271 return -EFAULT;
1272
222f1806
LC		 1273 buf[len] = 0;
1274 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1275 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1276 strncpy(pkt_dev->dst_max, buf, len);
1277 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1278 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1279 }
1280 if (debug)
25a8b254 1281 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1282 pkt_dev->dst_max);
1da177e4
LT		 1283 i += len;
1284 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1285 return count;
1286 }
1287 if (!strcmp(name, "dst6")) {
1288 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1289 if (len < 0)
1290 return len;
1da177e4
LT		 1291
1292 pkt_dev->flags |= F_IPV6;
1293
222f1806 1294 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1295 return -EFAULT;
222f1806 1296 buf[len] = 0;
1da177e4
LT		 1297
1298 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1299 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1300
1301 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1302
222f1806 1303 if (debug)
25a8b254 1304 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1305
222f1806 1306 i += len;
1da177e4
LT		 1307 sprintf(pg_result, "OK: dst6=%s", buf);
1308 return count;
1309 }
1310 if (!strcmp(name, "dst6_min")) {
1311 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1312 if (len < 0)
1313 return len;
1da177e4
LT		 1314
1315 pkt_dev->flags |= F_IPV6;
1316
222f1806 1317 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1318 return -EFAULT;
222f1806 1319 buf[len] = 0;
1da177e4
LT		 1320
1321 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1322 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1323
222f1806
LC		 1324 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1325 &pkt_dev->min_in6_daddr);
1326 if (debug)
25a8b254 1327 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1328
222f1806 1329 i += len;
1da177e4
LT		 1330 sprintf(pg_result, "OK: dst6_min=%s", buf);
1331 return count;
1332 }
1333 if (!strcmp(name, "dst6_max")) {
1334 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1335 if (len < 0)
1336 return len;
1da177e4
LT		 1337
1338 pkt_dev->flags |= F_IPV6;
1339
222f1806 1340 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1341 return -EFAULT;
222f1806 1342 buf[len] = 0;
1da177e4
LT		 1343
1344 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1345 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1346
222f1806 1347 if (debug)
25a8b254 1348 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1349
222f1806 1350 i += len;
1da177e4
LT		 1351 sprintf(pg_result, "OK: dst6_max=%s", buf);
1352 return count;
1353 }
1354 if (!strcmp(name, "src6")) {
1355 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1356 if (len < 0)
1357 return len;
1da177e4
LT		 1358
1359 pkt_dev->flags |= F_IPV6;
1360
222f1806 1361 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1362 return -EFAULT;
222f1806 1363 buf[len] = 0;
1da177e4
LT		 1364
1365 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1366 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1367
1368 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1369
222f1806 1370 if (debug)
25a8b254 1371 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1372
1373 i += len;
1da177e4
LT		 1374 sprintf(pg_result, "OK: src6=%s", buf);
1375 return count;
1376 }
1377 if (!strcmp(name, "src_min")) {
1378 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1379 if (len < 0)
222f1806 1380 return len;
63adc6fb 1381
222f1806 1382 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1383 return -EFAULT;
222f1806
LC		 1384 buf[len] = 0;
1385 if (strcmp(buf, pkt_dev->src_min) != 0) {
1386 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1387 strncpy(pkt_dev->src_min, buf, len);
1388 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1389 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1390 }
1391 if (debug)
25a8b254 1392 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1393 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)
25a8b254 1413 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1414 pkt_dev->src_max);
1da177e4
LT		 1415 i += len;
1416 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1417 return count;
1418 }
1419 if (!strcmp(name, "dst_mac")) {
1420 char *v = valstr;
f404e9a6 1421 unsigned char old_dmac[ETH_ALEN];
1da177e4 1422 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1423 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1424
1da177e4 1425 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1426 if (len < 0)
222f1806 1427 return len;
63adc6fb 1428
1da177e4 1429 memset(valstr, 0, sizeof(valstr));
222f1806 1430 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1431 return -EFAULT;
1432 i += len;
1433
222f1806 1434 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
1da177e4
LT		 1435 if (*v >= '0' && *v <= '9') {
1436 *m *= 16;
1437 *m += *v - '0';
1438 }
1439 if (*v >= 'A' && *v <= 'F') {
1440 *m *= 16;
1441 *m += *v - 'A' + 10;
1442 }
1443 if (*v >= 'a' && *v <= 'f') {
1444 *m *= 16;
1445 *m += *v - 'a' + 10;
1446 }
1447 if (*v == ':') {
1448 m++;
1449 *m = 0;
1450 }
1451 }
1452
1453 /* Set up Dest MAC */
f404e9a6
KK		 1454 if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
1455 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
222f1806 1456
1da177e4
LT		 1457 sprintf(pg_result, "OK: dstmac");
1458 return count;
1459 }
1460 if (!strcmp(name, "src_mac")) {
1461 char *v = valstr;
ce5d0b47 1462 unsigned char old_smac[ETH_ALEN];
1da177e4
LT		 1463 unsigned char *m = pkt_dev->src_mac;
1464
ce5d0b47
AR		 1465 memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
1466
1da177e4 1467 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1468 if (len < 0)
222f1806 1469 return len;
63adc6fb 1470
1da177e4 1471 memset(valstr, 0, sizeof(valstr));
222f1806 1472 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1473 return -EFAULT;
1474 i += len;
1475
222f1806 1476 for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
1da177e4
LT		 1477 if (*v >= '0' && *v <= '9') {
1478 *m *= 16;
1479 *m += *v - '0';
1480 }
1481 if (*v >= 'A' && *v <= 'F') {
1482 *m *= 16;
1483 *m += *v - 'A' + 10;
1484 }
1485 if (*v >= 'a' && *v <= 'f') {
1486 *m *= 16;
1487 *m += *v - 'a' + 10;
1488 }
1489 if (*v == ':') {
1490 m++;
1491 *m = 0;
1492 }
222f1806 1493 }
1da177e4 1494
ce5d0b47
AR		 1495 /* Set up Src MAC */
1496 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1497 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1498
222f1806 1499 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1500 return count;
1501 }
1502
222f1806
LC		 1503 if (!strcmp(name, "clear_counters")) {
1504 pktgen_clear_counters(pkt_dev);
1505 sprintf(pg_result, "OK: Clearing counters.\n");
1506 return count;
1507 }
1da177e4
LT		 1508
1509 if (!strcmp(name, "flows")) {
1510 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1511 if (len < 0)
222f1806 1512 return len;
63adc6fb 1513
1da177e4
LT		 1514 i += len;
1515 if (value > MAX_CFLOWS)
1516 value = MAX_CFLOWS;
1517
1518 pkt_dev->cflows = value;
1519 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1520 return count;
1521 }
1522
1523 if (!strcmp(name, "flowlen")) {
1524 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1525 if (len < 0)
222f1806 1526 return len;
63adc6fb 1527
1da177e4
LT		 1528 i += len;
1529 pkt_dev->lflow = value;
1530 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1531 return count;
1532 }
222f1806 1533
45b270f8
RO		 1534 if (!strcmp(name, "queue_map_min")) {
1535 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1536 if (len < 0)
45b270f8 1537 return len;
63adc6fb 1538
45b270f8
RO		 1539 i += len;
1540 pkt_dev->queue_map_min = value;
1541 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1542 return count;
1543 }
1544
1545 if (!strcmp(name, "queue_map_max")) {
1546 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1547 if (len < 0)
45b270f8 1548 return len;
63adc6fb 1549
45b270f8
RO		 1550 i += len;
1551 pkt_dev->queue_map_max = value;
1552 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1553 return count;
1554 }
1555
ca6549af 1556 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1557 unsigned n, cnt;
1558
ca6549af 1559 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1560 if (len < 0)
1561 return len;
ca6549af 1562 i += len;
cfcabdcc 1563 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1564 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1565 cnt += sprintf(pg_result + cnt,
1566 "%08x%s", ntohl(pkt_dev->labels[n]),
1567 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1568
1569 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1570 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1571 pkt_dev->svlan_id = 0xffff;
1572
1573 if (debug)
25a8b254 1574 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1575 }
1576 return count;
1577 }
1578
1579 if (!strcmp(name, "vlan_id")) {
1580 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1581 if (len < 0)
34954ddc 1582 return len;
63adc6fb 1583
34954ddc
FF		 1584 i += len;
1585 if (value <= 4095) {
1586 pkt_dev->vlan_id = value; /* turn on VLAN */
1587
1588 if (debug)
25a8b254 1589 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1590
1591 if (debug && pkt_dev->nr_labels)
25a8b254 1592 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1593
1594 pkt_dev->nr_labels = 0; /* turn off MPLS */
1595 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1596 } else {
1597 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1598 pkt_dev->svlan_id = 0xffff;
1599
1600 if (debug)
25a8b254 1601 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1602 }
1603 return count;
1604 }
1605
1606 if (!strcmp(name, "vlan_p")) {
1607 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1608 if (len < 0)
34954ddc 1609 return len;
63adc6fb 1610
34954ddc
FF		 1611 i += len;
1612 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1613 pkt_dev->vlan_p = value;
1614 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1615 } else {
1616 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1617 }
1618 return count;
1619 }
1620
1621 if (!strcmp(name, "vlan_cfi")) {
1622 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1623 if (len < 0)
34954ddc 1624 return len;
63adc6fb 1625
34954ddc
FF		 1626 i += len;
1627 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1628 pkt_dev->vlan_cfi = value;
1629 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1630 } else {
1631 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1632 }
1633 return count;
1634 }
1635
1636 if (!strcmp(name, "svlan_id")) {
1637 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1638 if (len < 0)
34954ddc 1639 return len;
63adc6fb 1640
34954ddc
FF		 1641 i += len;
1642 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1643 pkt_dev->svlan_id = value; /* turn on SVLAN */
1644
1645 if (debug)
25a8b254 1646 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1647
1648 if (debug && pkt_dev->nr_labels)
25a8b254 1649 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1650
1651 pkt_dev->nr_labels = 0; /* turn off MPLS */
1652 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1653 } else {
1654 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1655 pkt_dev->svlan_id = 0xffff;
1656
1657 if (debug)
25a8b254 1658 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1659 }
1660 return count;
1661 }
1662
1663 if (!strcmp(name, "svlan_p")) {
1664 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1665 if (len < 0)
34954ddc 1666 return len;
63adc6fb 1667
34954ddc
FF		 1668 i += len;
1669 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1670 pkt_dev->svlan_p = value;
1671 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1672 } else {
1673 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1674 }
1675 return count;
1676 }
1677
1678 if (!strcmp(name, "svlan_cfi")) {
1679 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1680 if (len < 0)
34954ddc 1681 return len;
63adc6fb 1682
34954ddc
FF		 1683 i += len;
1684 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1685 pkt_dev->svlan_cfi = value;
1686 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1687 } else {
1688 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1689 }
ca6549af
SW		 1690 return count;
1691 }
1692
1ca7768c
FF		 1693 if (!strcmp(name, "tos")) {
1694 __u32 tmp_value = 0;
1695 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1696 if (len < 0)
1ca7768c 1697 return len;
63adc6fb 1698
1ca7768c
FF		 1699 i += len;
1700 if (len == 2) {
1701 pkt_dev->tos = tmp_value;
1702 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1703 } else {
1704 sprintf(pg_result, "ERROR: tos must be 00-ff");
1705 }
1706 return count;
1707 }
1708
1709 if (!strcmp(name, "traffic_class")) {
1710 __u32 tmp_value = 0;
1711 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1712 if (len < 0)
1ca7768c 1713 return len;
63adc6fb 1714
1ca7768c
FF		 1715 i += len;
1716 if (len == 2) {
1717 pkt_dev->traffic_class = tmp_value;
1718 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1719 } else {
1720 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1721 }
1722 return count;
1723 }
1724
1da177e4
LT		 1725 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1726 return -EINVAL;
1727}
1728
d50a6b56 1729static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1730{
d50a6b56
SH		 1731 return single_open(file, pktgen_if_show, PDE(inode)->data);
1732}
1da177e4 1733
9a32144e 1734static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1735 .owner = THIS_MODULE,
1736 .open = pktgen_if_open,
1737 .read = seq_read,
1738 .llseek = seq_lseek,
1739 .write = pktgen_if_write,
1740 .release = single_release,
d50a6b56 1741};
1da177e4 1742
d50a6b56
SH		 1743static int pktgen_thread_show(struct seq_file *seq, void *v)
1744{
222f1806 1745 struct pktgen_thread *t = seq->private;
648fda74 1746 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1747
1748 BUG_ON(!t);
1da177e4 1749
222f1806 1750 seq_printf(seq, "Running: ");
1da177e4 1751
222f1806 1752 if_lock(t);
c26a8016 1753 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1754 if (pkt_dev->running)
593f63b0 1755 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1756
222f1806
LC		 1757 seq_printf(seq, "\nStopped: ");
1758
c26a8016 1759 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1760 if (!pkt_dev->running)
593f63b0 1761 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1762
1763 if (t->result[0])
d50a6b56 1764 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1765 else
d50a6b56 1766 seq_printf(seq, "\nResult: NA\n");
1da177e4 1767
222f1806 1768 if_unlock(t);
1da177e4 1769
d50a6b56 1770 return 0;
1da177e4
LT		 1771}
1772
d50a6b56 1773static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1774 const char __user * user_buffer,
1775 size_t count, loff_t * offset)
1da177e4 1776{
222f1806
LC		 1777 struct seq_file *seq = (struct seq_file *)file->private_data;
1778 struct pktgen_thread *t = seq->private;
1da177e4
LT		 1779 int i = 0, max, len, ret;
1780 char name[40];
222f1806 1781 char *pg_result;
d50a6b56 1782
1da177e4 1783 if (count < 1) {
222f1806 1784 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1785 return -EINVAL;
1786 }
d50a6b56 1787
1da177e4 1788 max = count - i;
222f1806
LC		 1789 len = count_trail_chars(&user_buffer[i], max);
1790 if (len < 0)
d50a6b56
SH		 1791 return len;
1792
1da177e4 1793 i += len;
d50a6b56 1794
1da177e4
LT		 1795 /* Read variable name */
1796
1797 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1798 if (len < 0)
d50a6b56 1799 return len;
222f1806 1800
1da177e4
LT		 1801 memset(name, 0, sizeof(name));
1802 if (copy_from_user(name, &user_buffer[i], len))
1803 return -EFAULT;
1804 i += len;
d50a6b56 1805
222f1806 1806 max = count - i;
1da177e4 1807 len = count_trail_chars(&user_buffer[i], max);
222f1806 1808 if (len < 0)
d50a6b56
SH		 1809 return len;
1810
1da177e4
LT		 1811 i += len;
1812
d50a6b56 1813 if (debug)
25a8b254
DM		 1814 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1815 name, (unsigned long)count);
1da177e4 1816
222f1806 1817 if (!t) {
25a8b254 1818 printk(KERN_ERR "pktgen: ERROR: No thread\n");
1da177e4
LT		 1819 ret = -EINVAL;
1820 goto out;
1821 }
1822
1823 pg_result = &(t->result[0]);
1824
222f1806
LC		 1825 if (!strcmp(name, "add_device")) {
1826 char f[32];
1827 memset(f, 0, 32);
1da177e4 1828 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1829 if (len < 0) {
1830 ret = len;
1da177e4
LT		 1831 goto out;
1832 }
222f1806 1833 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1834 return -EFAULT;
1835 i += len;
6146e6a4 1836 mutex_lock(&pktgen_thread_lock);
222f1806 1837 pktgen_add_device(t, f);
6146e6a4 1838 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1839 ret = count;
1840 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1841 goto out;
1842 }
1843
222f1806 1844 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1845 mutex_lock(&pktgen_thread_lock);
95ed63f7 1846 t->control |= T_REMDEVALL;
6146e6a4 1847 mutex_unlock(&pktgen_thread_lock);
222f1806 1848 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1849 ret = count;
222f1806 1850 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1851 goto out;
1852 }
1853
222f1806 1854 if (!strcmp(name, "max_before_softirq")) {
b163911f 1855 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1856 ret = count;
1da177e4
LT		 1857 goto out;
1858 }
1859
1860 ret = -EINVAL;
222f1806 1861out:
1da177e4
LT		 1862 return ret;
1863}
1864
d50a6b56 1865static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1866{
d50a6b56 1867 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1868}
1869
9a32144e 1870static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1871 .owner = THIS_MODULE,
1872 .open = pktgen_thread_open,
1873 .read = seq_read,
1874 .llseek = seq_lseek,
1875 .write = pktgen_thread_write,
1876 .release = single_release,
d50a6b56 1877};
1da177e4
LT		 1878
1879/* Think find or remove for NN */
222f1806 1880static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1881{
1882 struct pktgen_thread *t;
1883 struct pktgen_dev *pkt_dev = NULL;
3e984840 1884 bool exact = (remove == FIND);
1da177e4 1885
cdcdbe0b 1886 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1887 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1888 if (pkt_dev) {
222f1806
LC		 1889 if (remove) {
1890 if_lock(t);
1891 pkt_dev->removal_mark = 1;
1892 t->control |= T_REMDEV;
1893 if_unlock(t);
1894 }
1da177e4
LT		 1895 break;
1896 }
1da177e4 1897 }
222f1806 1898 return pkt_dev;
1da177e4
LT		 1899}
1900
95ed63f7
AK		 1901/*
1902 * mark a device for removal
1903 */
39df232f 1904static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1905{
1906 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1907 const int max_tries = 10, msec_per_try = 125;
1908 int i = 0;
95ed63f7 1909
6146e6a4 1910 mutex_lock(&pktgen_thread_lock);
25c4e53a 1911 pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
95ed63f7 1912
222f1806 1913 while (1) {
95ed63f7
AK		 1914
1915 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1916 if (pkt_dev == NULL)
1917 break; /* success */
95ed63f7 1918
6146e6a4 1919 mutex_unlock(&pktgen_thread_lock);
25c4e53a
SH		 1920 pr_debug("pktgen: pktgen_mark_device waiting for %s "
1921 "to disappear....\n", ifname);
95ed63f7 1922 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1923 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1924
1925 if (++i >= max_tries) {
25a8b254
DM		 1926 printk(KERN_ERR "pktgen_mark_device: timed out after "
1927 "waiting %d msec for device %s to be removed\n",
222f1806 1928 msec_per_try * i, ifname);
95ed63f7
AK		 1929 break;
1930 }
1931
1932 }
1933
6146e6a4 1934 mutex_unlock(&pktgen_thread_lock);
39df232f 1935}
95ed63f7 1936
39df232f
SH		 1937static void pktgen_change_name(struct net_device *dev)
1938{
1939 struct pktgen_thread *t;
1940
1941 list_for_each_entry(t, &pktgen_threads, th_list) {
1942 struct pktgen_dev *pkt_dev;
1943
1944 list_for_each_entry(pkt_dev, &t->if_list, list) {
1945 if (pkt_dev->odev != dev)
1946 continue;
1947
1948 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1949
2975315b
AD		 1950 pkt_dev->entry = proc_create_data(dev->name, 0600,
1951 pg_proc_dir,
1952 &pktgen_if_fops,
1953 pkt_dev);
39df232f
SH		 1954 if (!pkt_dev->entry)
1955 printk(KERN_ERR "pktgen: can't move proc "
1956 " entry for '%s'\n", dev->name);
1957 break;
1958 }
1959 }
1da177e4
LT		 1960}
1961
222f1806
LC		 1962static int pktgen_device_event(struct notifier_block *unused,
1963 unsigned long event, void *ptr)
1da177e4 1964{
39df232f 1965 struct net_device *dev = ptr;
1da177e4 1966
721499e8 1967 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1968 return NOTIFY_DONE;
1969
1da177e4
LT		 1970 /* It is OK that we do not hold the group lock right now,
1971 * as we run under the RTNL lock.
1972 */
1973
1974 switch (event) {
39df232f
SH		 1975 case NETDEV_CHANGENAME:
1976 pktgen_change_name(dev);
1da177e4 1977 break;
222f1806 1978
1da177e4 1979 case NETDEV_UNREGISTER:
222f1806 1980 pktgen_mark_device(dev->name);
1da177e4 1981 break;
3ff50b79 1982 }
1da177e4
LT		 1983
1984 return NOTIFY_DONE;
1985}
1986
63adc6fb
SH		 1987static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1988 const char *ifname)
e6fce5b9
RO		 1989{
1990 char b[IFNAMSIZ+5];
1991 int i = 0;
1992
63adc6fb
SH		 1993 for (i = 0; ifname[i] != '@'; i++) {
1994 if (i == IFNAMSIZ)
e6fce5b9
RO		 1995 break;
1996
1997 b[i] = ifname[i];
1998 }
1999 b[i] = 0;
2000
2001 return dev_get_by_name(&init_net, b);
2002}
2003
2004
1da177e4
LT		 2005/* Associate pktgen_dev with a device. */
2006
39df232f 2007static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2008{
1da177e4 2009 struct net_device *odev;
39df232f 2010 int err;
1da177e4
LT		 2011
2012 /* Clean old setups */
1da177e4
LT		 2013 if (pkt_dev->odev) {
2014 dev_put(pkt_dev->odev);
222f1806
LC		 2015 pkt_dev->odev = NULL;
2016 }
1da177e4 2017
e6fce5b9 2018 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 2019 if (!odev) {
25a8b254 2020 printk(KERN_ERR "pktgen: no such netdevice: \"%s\"\n", ifname);
39df232f 2021 return -ENODEV;
1da177e4 2022 }
39df232f 2023
1da177e4 2024 if (odev->type != ARPHRD_ETHER) {
25a8b254 2025 printk(KERN_ERR "pktgen: not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2026 err = -EINVAL;
2027 } else if (!netif_running(odev)) {
25a8b254 2028 printk(KERN_ERR "pktgen: device is down: \"%s\"\n", ifname);
39df232f
SH		 2029 err = -ENETDOWN;
2030 } else {
2031 pkt_dev->odev = odev;
2032 return 0;
1da177e4 2033 }
1da177e4 2034
1da177e4 2035 dev_put(odev);
39df232f 2036 return err;
1da177e4
LT		 2037}
2038
2039/* Read pkt_dev from the interface and set up internal pktgen_dev
2040 * structure to have the right information to create/send packets
2041 */
2042static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2043{
64c00d81
AG		 2044 int ntxq;
2045
222f1806 2046 if (!pkt_dev->odev) {
25a8b254
DM		 2047 printk(KERN_ERR "pktgen: ERROR: pkt_dev->odev == NULL in "
2048 "setup_inject.\n");
222f1806
LC		 2049 sprintf(pkt_dev->result,
2050 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2051 return;
2052 }
2053
64c00d81
AG		 2054 /* make sure that we don't pick a non-existing transmit queue */
2055 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2056
64c00d81
AG		 2057 if (ntxq <= pkt_dev->queue_map_min) {
2058 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 2059 "queue_map_min (zero-based) (%d) exceeds valid range "
2060 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 2061 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
593f63b0 2062 pkt_dev->odevname);
64c00d81
AG		 2063 pkt_dev->queue_map_min = ntxq - 1;
2064 }
88271660 2065 if (pkt_dev->queue_map_max >= ntxq) {
64c00d81 2066 printk(KERN_WARNING "pktgen: WARNING: Requested "
88271660
JB		 2067 "queue_map_max (zero-based) (%d) exceeds valid range "
2068 "[0 - %d] for (%d) queues on %s, resetting\n",
63adc6fb 2069 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
593f63b0 2070 pkt_dev->odevname);
64c00d81
AG		 2071 pkt_dev->queue_map_max = ntxq - 1;
2072 }
2073
222f1806 2074 /* Default to the interface's mac if not explicitly set. */
1da177e4 2075
f404e9a6 2076 if (is_zero_ether_addr(pkt_dev->src_mac))
222f1806 2077 memcpy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr, ETH_ALEN);
1da177e4 2078
222f1806 2079 /* Set up Dest MAC */
f404e9a6 2080 memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
1da177e4 2081
222f1806
LC		 2082 /* Set up pkt size */
2083 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2084
2085 if (pkt_dev->flags & F_IPV6) {
1da177e4 2086 /*
4ec93edb 2087 * Skip this automatic address setting until locks or functions
1da177e4
LT		 2088 * gets exported
2089 */
2090
2091#ifdef NOTNOW
222f1806 2092 int i, set = 0, err = 1;
1da177e4
LT		 2093 struct inet6_dev *idev;
2094
222f1806
LC		 2095 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2096 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2097 set = 1;
2098 break;
2099 }
2100
222f1806
LC		 2101 if (!set) {
2102
1da177e4
LT		 2103 /*
2104 * Use linklevel address if unconfigured.
2105 *
2106 * use ipv6_get_lladdr if/when it's get exported
2107 */
2108
8814c4b5 2109 rcu_read_lock();
63adc6fb
SH		 2110 idev = __in6_dev_get(pkt_dev->odev);
2111 if (idev) {
1da177e4
LT		 2112 struct inet6_ifaddr *ifp;
2113
2114 read_lock_bh(&idev->lock);
222f1806
LC		 2115 for (ifp = idev->addr_list; ifp;
2116 ifp = ifp->if_next) {
f64f9e71
JP		 2117 if (ifp->scope == IFA_LINK &&
2118 !(ifp->flags & IFA_F_TENTATIVE)) {
222f1806
LC		 2119 ipv6_addr_copy(&pkt_dev->
2120 cur_in6_saddr,
2121 &ifp->addr);
1da177e4
LT		 2122 err = 0;
2123 break;
2124 }
2125 }
2126 read_unlock_bh(&idev->lock);
2127 }
8814c4b5 2128 rcu_read_unlock();
222f1806 2129 if (err)
25a8b254
DM		 2130 printk(KERN_ERR "pktgen: ERROR: IPv6 link "
2131 "address not availble.\n");
1da177e4
LT		 2132 }
2133#endif
222f1806 2134 } else {
1da177e4
LT		 2135 pkt_dev->saddr_min = 0;
2136 pkt_dev->saddr_max = 0;
2137 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2138
2139 struct in_device *in_dev;
1da177e4
LT		 2140
2141 rcu_read_lock();
e5ed6399 2142 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2143 if (in_dev) {
2144 if (in_dev->ifa_list) {
222f1806
LC		 2145 pkt_dev->saddr_min =
2146 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2147 pkt_dev->saddr_max = pkt_dev->saddr_min;
2148 }
1da177e4
LT		 2149 }
2150 rcu_read_unlock();
222f1806 2151 } else {
1da177e4
LT		 2152 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2153 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2154 }
2155
2156 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2157 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2158 }
222f1806
LC		 2159 /* Initialize current values. */
2160 pkt_dev->cur_dst_mac_offset = 0;
2161 pkt_dev->cur_src_mac_offset = 0;
2162 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2163 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2164 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2165 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2166 pkt_dev->nflows = 0;
2167}
2168
fd29cf72
SH		 2169
2170static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2171{
ef87979c 2172 ktime_t start_time, end_time;
417bc4b8 2173 s64 remaining;
2bc481cf
SH		 2174 struct hrtimer_sleeper t;
2175
2176 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2177 hrtimer_set_expires(&t.timer, spin_until);
2178
43d28b65 2179 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2180 if (remaining <= 0) {
2181 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2182 return;
417bc4b8 2183 }
2bc481cf 2184
ef87979c 2185 start_time = ktime_now();
43d28b65
DT		 2186 if (remaining < 100000)
2187 ndelay(remaining); /* really small just spin */
2bc481cf
SH		 2188 else {
2189 /* see do_nanosleep */
2190 hrtimer_init_sleeper(&t, current);
2191 do {
2192 set_current_state(TASK_INTERRUPTIBLE);
2193 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2194 if (!hrtimer_active(&t.timer))
2195 t.task = NULL;
2196
2197 if (likely(t.task))
1da177e4 2198 schedule();
1da177e4 2199
2bc481cf
SH		 2200 hrtimer_cancel(&t.timer);
2201 } while (t.task && pkt_dev->running && !signal_pending(current));
2202 __set_current_state(TASK_RUNNING);
1da177e4 2203 }
ef87979c
SH		 2204 end_time = ktime_now();
2205
2206 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2207 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2208}
2209
16dab72f
JHS		 2210static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2211{
a553e4a6 2212 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2213 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2214 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2215 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2216}
2217
648fda74 2218static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2219{
648fda74 2220 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2221}
2222
2223static inline int f_pick(struct pktgen_dev *pkt_dev)
2224{
2225 int flow = pkt_dev->curfl;
2226
2227 if (pkt_dev->flags & F_FLOW_SEQ) {
2228 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2229 /* reset time */
2230 pkt_dev->flows[flow].count = 0;
1211a645 2231 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2232 pkt_dev->curfl += 1;
2233 if (pkt_dev->curfl >= pkt_dev->cflows)
2234 pkt_dev->curfl = 0; /*reset */
2235 }
2236 } else {
2237 flow = random32() % pkt_dev->cflows;
1211a645 2238 pkt_dev->curfl = flow;
007a531b 2239
1211a645 2240 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2241 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2242 pkt_dev->flows[flow].flags = 0;
2243 }
007a531b
JHS		 2244 }
2245
2246 return pkt_dev->curfl;
2247}
2248
a553e4a6
JHS		 2249
2250#ifdef CONFIG_XFRM
2251/* If there was already an IPSEC SA, we keep it as is, else
2252 * we go look for it ...
2253*/
bd55775c 2254#define DUMMY_MARK 0
fea1ab0f 2255static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2256{
2257 struct xfrm_state *x = pkt_dev->flows[flow].x;
2258 if (!x) {
2259 /*slow path: we dont already have xfrm_state*/
bd55775c 2260 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2261 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2262 (xfrm_address_t *)&pkt_dev->cur_saddr,
2263 AF_INET,
2264 pkt_dev->ipsmode,
2265 pkt_dev->ipsproto, 0);
2266 if (x) {
2267 pkt_dev->flows[flow].x = x;
2268 set_pkt_overhead(pkt_dev);
63adc6fb 2269 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2270 }
2271
2272 }
2273}
2274#endif
fd2ea0a7
DM		 2275static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2276{
e6fce5b9
RO		 2277
2278 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2279 pkt_dev->cur_queue_map = smp_processor_id();
2280
896a7cf8 2281 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2282 __u16 t;
2283 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2284 t = random32() %
2285 (pkt_dev->queue_map_max -
2286 pkt_dev->queue_map_min + 1)
2287 + pkt_dev->queue_map_min;
2288 } else {
2289 t = pkt_dev->cur_queue_map + 1;
2290 if (t > pkt_dev->queue_map_max)
2291 t = pkt_dev->queue_map_min;
2292 }
2293 pkt_dev->cur_queue_map = t;
2294 }
bfdbc0ac 2295 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2296}
2297
1da177e4
LT		 2298/* Increment/randomize headers according to flags and current values
2299 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2300 */
222f1806
LC		 2301static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2302{
2303 __u32 imn;
2304 __u32 imx;
2305 int flow = 0;
1da177e4 2306
007a531b
JHS		 2307 if (pkt_dev->cflows)
2308 flow = f_pick(pkt_dev);
1da177e4
LT		 2309
2310 /* Deal with source MAC */
222f1806
LC		 2311 if (pkt_dev->src_mac_count > 1) {
2312 __u32 mc;
2313 __u32 tmp;
2314
2315 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2316 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2317 else {
2318 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2319 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2320 pkt_dev->src_mac_count)
2321 pkt_dev->cur_src_mac_offset = 0;
2322 }
2323
2324 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2325 pkt_dev->hh[11] = tmp;
2326 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2327 pkt_dev->hh[10] = tmp;
2328 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2329 pkt_dev->hh[9] = tmp;
2330 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2331 pkt_dev->hh[8] = tmp;
2332 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2333 pkt_dev->hh[7] = tmp;
2334 }
2335
2336 /* Deal with Destination MAC */
2337 if (pkt_dev->dst_mac_count > 1) {
2338 __u32 mc;
2339 __u32 tmp;
2340
2341 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2342 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2343
2344 else {
2345 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2346 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2347 pkt_dev->dst_mac_count) {
2348 pkt_dev->cur_dst_mac_offset = 0;
2349 }
2350 }
2351
2352 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2353 pkt_dev->hh[5] = tmp;
2354 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2355 pkt_dev->hh[4] = tmp;
2356 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2357 pkt_dev->hh[3] = tmp;
2358 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2359 pkt_dev->hh[2] = tmp;
2360 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2361 pkt_dev->hh[1] = tmp;
2362 }
2363
ca6549af
SW		 2364 if (pkt_dev->flags & F_MPLS_RND) {
2365 unsigned i;
e71a4783 2366 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2367 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2368 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2369 ((__force __be32)random32() &
ca6549af
SW		 2370 htonl(0x000fffff));
2371 }
2372
34954ddc 2373 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2374 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2375 }
2376
2377 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2378 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2379 }
2380
222f1806
LC		 2381 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2382 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2383 pkt_dev->cur_udp_src = random32() %
2384 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2385 + pkt_dev->udp_src_min;
222f1806
LC		 2386
2387 else {
1da177e4
LT		 2388 pkt_dev->cur_udp_src++;
2389 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2390 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2391 }
2392 }
2393
2394 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2395 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2396 pkt_dev->cur_udp_dst = random32() %
2397 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2398 + pkt_dev->udp_dst_min;
222f1806 2399 } else {
1da177e4 2400 pkt_dev->cur_udp_dst++;
222f1806 2401 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2402 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2403 }
2404 }
1da177e4
LT		 2405
2406 if (!(pkt_dev->flags & F_IPV6)) {
2407
63adc6fb
SH		 2408 imn = ntohl(pkt_dev->saddr_min);
2409 imx = ntohl(pkt_dev->saddr_max);
2410 if (imn < imx) {
1da177e4 2411 __u32 t;
222f1806 2412 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2413 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2414 else {
2415 t = ntohl(pkt_dev->cur_saddr);
2416 t++;
63adc6fb 2417 if (t > imx)
1da177e4 2418 t = imn;
63adc6fb 2419
1da177e4
LT		 2420 }
2421 pkt_dev->cur_saddr = htonl(t);
2422 }
222f1806 2423
007a531b 2424 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2425 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2426 } else {
252e3346
AV		 2427 imn = ntohl(pkt_dev->daddr_min);
2428 imx = ntohl(pkt_dev->daddr_max);
2429 if (imn < imx) {
1da177e4 2430 __u32 t;
252e3346 2431 __be32 s;
1da177e4
LT		 2432 if (pkt_dev->flags & F_IPDST_RND) {
2433
5fa6fc76 2434 t = random32() % (imx - imn) + imn;
252e3346 2435 s = htonl(t);
1da177e4 2436
21cf2253
JP		 2437 while (ipv4_is_loopback(s) ||
2438 ipv4_is_multicast(s) ||
1e637c74 2439 ipv4_is_lbcast(s) ||
21cf2253
JP		 2440 ipv4_is_zeronet(s) ||
2441 ipv4_is_local_multicast(s)) {
5fa6fc76 2442 t = random32() % (imx - imn) + imn;
252e3346 2443 s = htonl(t);
1da177e4 2444 }
252e3346
AV		 2445 pkt_dev->cur_daddr = s;
2446 } else {
1da177e4
LT		 2447 t = ntohl(pkt_dev->cur_daddr);
2448 t++;
2449 if (t > imx) {
2450 t = imn;
2451 }
2452 pkt_dev->cur_daddr = htonl(t);
2453 }
2454 }
222f1806 2455 if (pkt_dev->cflows) {
007a531b 2456 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2457 pkt_dev->flows[flow].cur_daddr =
2458 pkt_dev->cur_daddr;
a553e4a6
JHS		 2459#ifdef CONFIG_XFRM
2460 if (pkt_dev->flags & F_IPSEC_ON)
2461 get_ipsec_sa(pkt_dev, flow);
2462#endif
1da177e4
LT		 2463 pkt_dev->nflows++;
2464 }
2465 }
222f1806
LC		 2466 } else { /* IPV6 * */
2467
2468 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2469 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2470 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2471 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2472 else {
2473 int i;
2474
2475 /* Only random destinations yet */
2476
222f1806 2477 for (i = 0; i < 4; i++) {
1da177e4 2478 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2479 (((__force __be32)random32() |
222f1806
LC		 2480 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2481 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2482 }
222f1806 2483 }
1da177e4
LT		 2484 }
2485
222f1806
LC		 2486 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2487 __u32 t;
2488 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2489 t = random32() %
2490 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2491 + pkt_dev->min_pkt_size;
222f1806 2492 } else {
1da177e4 2493 t = pkt_dev->cur_pkt_size + 1;
222f1806 2494 if (t > pkt_dev->max_pkt_size)
1da177e4 2495 t = pkt_dev->min_pkt_size;
222f1806
LC		 2496 }
2497 pkt_dev->cur_pkt_size = t;
2498 }
1da177e4 2499
fd2ea0a7 2500 set_cur_queue_map(pkt_dev);
45b270f8 2501
1da177e4
LT		 2502 pkt_dev->flows[flow].count++;
2503}
2504
a553e4a6
JHS		 2505
2506#ifdef CONFIG_XFRM
2507static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2508{
2509 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2510 int err = 0;
2511 struct iphdr *iph;
2512
2513 if (!x)
2514 return 0;
2515 /* XXX: we dont support tunnel mode for now until
2516 * we resolve the dst issue */
2517 if (x->props.mode != XFRM_MODE_TRANSPORT)
2518 return 0;
2519
2520 spin_lock(&x->lock);
2521 iph = ip_hdr(skb);
2522
13996378 2523 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2524 if (err)
2525 goto error;
2526 err = x->type->output(x, skb);
2527 if (err)
2528 goto error;
2529
63adc6fb 2530 x->curlft.bytes += skb->len;
a553e4a6 2531 x->curlft.packets++;
a553e4a6
JHS		 2532error:
2533 spin_unlock(&x->lock);
2534 return err;
2535}
2536
475ac1e4 2537static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2538{
2539 if (pkt_dev->cflows) {
2540 /* let go of the SAs if we have them */
2541 int i = 0;
5b5f792a 2542 for (; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2543 struct xfrm_state *x = pkt_dev->flows[i].x;
2544 if (x) {
2545 xfrm_state_put(x);
2546 pkt_dev->flows[i].x = NULL;
2547 }
2548 }
2549 }
2550}
2551
475ac1e4 2552static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2553 struct sk_buff *skb, __be16 protocol)
2554{
2555 if (pkt_dev->flags & F_IPSEC_ON) {
2556 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2557 int nhead = 0;
2558 if (x) {
2559 int ret;
2560 __u8 *eth;
2561 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2562 if (nhead > 0) {
a553e4a6
JHS		 2563 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2564 if (ret < 0) {
25a8b254 2565 printk(KERN_ERR "Error expanding "
63adc6fb 2566 "ipsec packet %d\n", ret);
b4bb4ac8 2567 goto err;
a553e4a6
JHS		 2568 }
2569 }
2570
2571 /* ipsec is not expecting ll header */
2572 skb_pull(skb, ETH_HLEN);
2573 ret = pktgen_output_ipsec(skb, pkt_dev);
2574 if (ret) {
25a8b254 2575 printk(KERN_ERR "Error creating ipsec "
63adc6fb 2576 "packet %d\n", ret);
b4bb4ac8 2577 goto err;
a553e4a6
JHS		 2578 }
2579 /* restore ll */
2580 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2581 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2582 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2583 }
2584 }
2585 return 1;
b4bb4ac8
IJ		 2586err:
2587 kfree_skb(skb);
2588 return 0;
a553e4a6
JHS		 2589}
2590#endif
2591
ca6549af
SW		 2592static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2593{
2594 unsigned i;
63adc6fb 2595 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2596 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2597
ca6549af
SW		 2598 mpls--;
2599 *mpls |= MPLS_STACK_BOTTOM;
2600}
2601
0f37c605
AV		 2602static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2603 unsigned int prio)
2604{
2605 return htons(id | (cfi << 12) | (prio << 13));
2606}
2607
222f1806
LC		 2608static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2609 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2610{
2611 struct sk_buff *skb = NULL;
2612 __u8 *eth;
2613 struct udphdr *udph;
2614 int datalen, iplen;
2615 struct iphdr *iph;
222f1806 2616 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2617 __be16 protocol = htons(ETH_P_IP);
ca6549af 2618 __be32 *mpls;
34954ddc
FF		 2619 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2620 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2621 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2622 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2623 u16 queue_map;
ca6549af
SW		 2624
2625 if (pkt_dev->nr_labels)
d5f1ce9a 2626 protocol = htons(ETH_P_MPLS_UC);
222f1806 2627
34954ddc 2628 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2629 protocol = htons(ETH_P_8021Q);
34954ddc 2630
64053bee
RO		 2631 /* Update any of the values, used when we're incrementing various
2632 * fields.
2633 */
fd2ea0a7 2634 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2635 mod_cur_headers(pkt_dev);
2636
7ac5459e 2637 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2638
2639 if (pkt_dev->flags & F_NODE) {
2640 int node;
2641
2642 if (pkt_dev->node >= 0)
2643 node = pkt_dev->node;
2644 else
2645 node = numa_node_id();
2646
2647 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2648 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2649 if (likely(skb)) {
2650 skb_reserve(skb, NET_SKB_PAD);
2651 skb->dev = odev;
2652 }
2653 }
2654 else
2655 skb = __netdev_alloc_skb(odev,
2656 pkt_dev->cur_pkt_size + 64
2657 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2658
1da177e4
LT		 2659 if (!skb) {
2660 sprintf(pkt_dev->result, "No memory");
2661 return NULL;
2662 }
2663
7ac5459e 2664 skb_reserve(skb, datalen);
1da177e4
LT		 2665
2666 /* Reserve for ethernet and IP header */
2667 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2668 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2669 if (pkt_dev->nr_labels)
2670 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2671
2672 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2673 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2674 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2675 *svlan_tci = build_tci(pkt_dev->svlan_id,
2676 pkt_dev->svlan_cfi,
2677 pkt_dev->svlan_p);
34954ddc 2678 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2679 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2680 }
2681 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2682 *vlan_tci = build_tci(pkt_dev->vlan_id,
2683 pkt_dev->vlan_cfi,
2684 pkt_dev->vlan_p);
34954ddc 2685 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2686 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2687 }
2688
27a884dc 2689 skb->network_header = skb->tail;
b0e380b1 2690 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2691 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2692 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 2693 iph = ip_hdr(skb);
2694 udph = udp_hdr(skb);
1da177e4 2695
1da177e4 2696 memcpy(eth, pkt_dev->hh, 12);
252e3346 2697 *(__be16 *) & eth[12] = protocol;
1da177e4 2698
ca6549af
SW		 2699 /* Eth + IPh + UDPh + mpls */
2700 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2701 pkt_dev->pkt_overhead;
222f1806 2702 if (datalen < sizeof(struct pktgen_hdr))
1da177e4 2703 datalen = sizeof(struct pktgen_hdr);
222f1806 2704
1da177e4
LT		 2705 udph->source = htons(pkt_dev->cur_udp_src);
2706 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 2707 udph->len = htons(datalen + 8); /* DATA + udphdr */
2708 udph->check = 0; /* No checksum */
1da177e4
LT		 2709
2710 iph->ihl = 5;
2711 iph->version = 4;
2712 iph->ttl = 32;
1ca7768c 2713 iph->tos = pkt_dev->tos;
222f1806 2714 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2715 iph->saddr = pkt_dev->cur_saddr;
2716 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2717 iph->id = htons(pkt_dev->ip_id);
2718 pkt_dev->ip_id++;
1da177e4
LT		 2719 iph->frag_off = 0;
2720 iplen = 20 + 8 + datalen;
2721 iph->tot_len = htons(iplen);
2722 iph->check = 0;
222f1806 2723 iph->check = ip_fast_csum((void *)iph, iph->ihl);
ca6549af 2724 skb->protocol = protocol;
b0e380b1 2725 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 2726 pkt_dev->pkt_overhead);
1da177e4
LT		 2727 skb->dev = odev;
2728 skb->pkt_type = PACKET_HOST;
2729
66ed1e5e 2730 if (pkt_dev->nfrags <= 0) {
222f1806 2731 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
66ed1e5e
ED		 2732 memset(pgh + 1, 0, datalen - sizeof(struct pktgen_hdr));
2733 } else {
1da177e4 2734 int frags = pkt_dev->nfrags;
66ed1e5e 2735 int i, len;
1da177e4 2736
222f1806
LC		 2737 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
2738
1da177e4
LT		 2739 if (frags > MAX_SKB_FRAGS)
2740 frags = MAX_SKB_FRAGS;
222f1806 2741 if (datalen > frags * PAGE_SIZE) {
66ed1e5e
ED		 2742 len = datalen - frags * PAGE_SIZE;
2743 memset(skb_put(skb, len), 0, len);
222f1806 2744 datalen = frags * PAGE_SIZE;
1da177e4
LT		 2745 }
2746
2747 i = 0;
2748 while (datalen > 0) {
66ed1e5e 2749 struct page *page = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
1da177e4
LT		 2750 skb_shinfo(skb)->frags[i].page = page;
2751 skb_shinfo(skb)->frags[i].page_offset = 0;
2752 skb_shinfo(skb)->frags[i].size =
222f1806 2753 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 2754 datalen -= skb_shinfo(skb)->frags[i].size;
2755 skb->len += skb_shinfo(skb)->frags[i].size;
2756 skb->data_len += skb_shinfo(skb)->frags[i].size;
2757 i++;
2758 skb_shinfo(skb)->nr_frags = i;
2759 }
2760
2761 while (i < frags) {
2762 int rem;
2763
2764 if (i == 0)
2765 break;
2766
2767 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
2768 if (rem == 0)
2769 break;
2770
2771 skb_shinfo(skb)->frags[i - 1].size -= rem;
2772
222f1806
LC		 2773 skb_shinfo(skb)->frags[i] =
2774 skb_shinfo(skb)->frags[i - 1];
1da177e4 2775 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 2776 skb_shinfo(skb)->frags[i].page =
2777 skb_shinfo(skb)->frags[i - 1].page;
2778 skb_shinfo(skb)->frags[i].page_offset +=
2779 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 2780 skb_shinfo(skb)->frags[i].size = rem;
2781 i++;
2782 skb_shinfo(skb)->nr_frags = i;
2783 }
2784 }
2785
63adc6fb
SH		 2786 /* Stamp the time, and sequence number,
2787 * convert them to network byte order
2788 */
222f1806
LC		 2789 if (pgh) {
2790 struct timeval timestamp;
2791
2792 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2793 pgh->seq_num = htonl(pkt_dev->seq_num);
2794
2795 do_gettimeofday(&timestamp);
2796 pgh->tv_sec = htonl(timestamp.tv_sec);
2797 pgh->tv_usec = htonl(timestamp.tv_usec);
2798 }
1da177e4 2799
a553e4a6
JHS		 2800#ifdef CONFIG_XFRM
2801 if (!process_ipsec(pkt_dev, skb, protocol))
2802 return NULL;
2803#endif
2804
1da177e4
LT		 2805 return skb;
2806}
2807
2808/*
4ec93edb 2809 * scan_ip6, fmt_ip taken from dietlibc-0.21
1da177e4
LT		 2810 * Author Felix von Leitner <felix-dietlibc@fefe.de>
2811 *
4ec93edb 2812 * Slightly modified for kernel.
1da177e4
LT		 2813 * Should be candidate for net/ipv4/utils.c
2814 * --ro
2815 */
2816
222f1806 2817static unsigned int scan_ip6(const char *s, char ip[16])
1da177e4
LT		 2818{
2819 unsigned int i;
222f1806 2820 unsigned int len = 0;
1da177e4
LT		 2821 unsigned long u;
2822 char suffix[16];
222f1806
LC		 2823 unsigned int prefixlen = 0;
2824 unsigned int suffixlen = 0;
252e3346 2825 __be32 tmp;
cfcabdcc 2826 char *pos;
1da177e4 2827
222f1806
LC		 2828 for (i = 0; i < 16; i++)
2829 ip[i] = 0;
1da177e4
LT		 2830
2831 for (;;) {
2832 if (*s == ':') {
2833 len++;
222f1806
LC		 2834 if (s[1] == ':') { /* Found "::", skip to part 2 */
2835 s += 2;
1da177e4
LT		 2836 len++;
2837 break;
2838 }
2839 s++;
2840 }
1da177e4 2841
cfcabdcc
SH		 2842 u = simple_strtoul(s, &pos, 16);
2843 i = pos - s;
222f1806
LC		 2844 if (!i)
2845 return 0;
2846 if (prefixlen == 12 && s[i] == '.') {
1da177e4
LT		 2847
2848 /* the last 4 bytes may be written as IPv4 address */
2849
2850 tmp = in_aton(s);
222f1806
LC		 2851 memcpy((struct in_addr *)(ip + 12), &tmp, sizeof(tmp));
2852 return i + len;
1da177e4
LT		 2853 }
2854 ip[prefixlen++] = (u >> 8);
2855 ip[prefixlen++] = (u & 255);
222f1806
LC		 2856 s += i;
2857 len += i;
2858 if (prefixlen == 16)
1da177e4
LT		 2859 return len;
2860 }
2861
2862/* part 2, after "::" */
2863 for (;;) {
2864 if (*s == ':') {
222f1806 2865 if (suffixlen == 0)
1da177e4
LT		 2866 break;
2867 s++;
2868 len++;
222f1806 2869 } else if (suffixlen != 0)
1da177e4 2870 break;
cfcabdcc
SH		 2871
2872 u = simple_strtol(s, &pos, 16);
2873 i = pos - s;
1da177e4 2874 if (!i) {
222f1806
LC		 2875 if (*s)
2876 len--;
1da177e4
LT		 2877 break;
2878 }
222f1806 2879 if (suffixlen + prefixlen <= 12 && s[i] == '.') {
1da177e4 2880 tmp = in_aton(s);
222f1806
LC		 2881 memcpy((struct in_addr *)(suffix + suffixlen), &tmp,
2882 sizeof(tmp));
2883 suffixlen += 4;
2884 len += strlen(s);
1da177e4
LT		 2885 break;
2886 }
2887 suffix[suffixlen++] = (u >> 8);
2888 suffix[suffixlen++] = (u & 255);
222f1806
LC		 2889 s += i;
2890 len += i;
2891 if (prefixlen + suffixlen == 16)
1da177e4
LT		 2892 break;
2893 }
222f1806
LC		 2894 for (i = 0; i < suffixlen; i++)
2895 ip[16 - suffixlen + i] = suffix[i];
1da177e4
LT		 2896 return len;
2897}
2898
222f1806
LC		 2899static char tohex(char hexdigit)
2900{
2901 return hexdigit > 9 ? hexdigit + 'a' - 10 : hexdigit + '0';
1da177e4
LT		 2902}
2903
222f1806
LC		 2904static int fmt_xlong(char *s, unsigned int i)
2905{
2906 char *bak = s;
2907 *s = tohex((i >> 12) & 0xf);
2908 if (s != bak || *s != '0')
2909 ++s;
2910 *s = tohex((i >> 8) & 0xf);
2911 if (s != bak || *s != '0')
2912 ++s;
2913 *s = tohex((i >> 4) & 0xf);
2914 if (s != bak || *s != '0')
2915 ++s;
2916 *s = tohex(i & 0xf);
2917 return s - bak + 1;
1da177e4
LT		 2918}
2919
222f1806
LC		 2920static unsigned int fmt_ip6(char *s, const char ip[16])
2921{
1da177e4
LT		 2922 unsigned int len;
2923 unsigned int i;
2924 unsigned int temp;
2925 unsigned int compressing;
2926 int j;
2927
222f1806
LC		 2928 len = 0;
2929 compressing = 0;
2930 for (j = 0; j < 16; j += 2) {
1da177e4
LT		 2931
2932#ifdef V4MAPPEDPREFIX
222f1806
LC		 2933 if (j == 12 && !memcmp(ip, V4mappedprefix, 12)) {
2934 inet_ntoa_r(*(struct in_addr *)(ip + 12), s);
2935 temp = strlen(s);
2936 return len + temp;
1da177e4
LT		 2937 }
2938#endif
222f1806
LC		 2939 temp = ((unsigned long)(unsigned char)ip[j] << 8) +
2940 (unsigned long)(unsigned char)ip[j + 1];
1da177e4
LT		 2941 if (temp == 0) {
2942 if (!compressing) {
222f1806
LC		 2943 compressing = 1;
2944 if (j == 0) {
2945 *s++ = ':';
2946 ++len;
1da177e4
LT		 2947 }
2948 }
2949 } else {
2950 if (compressing) {
222f1806
LC		 2951 compressing = 0;
2952 *s++ = ':';
2953 ++len;
1da177e4 2954 }
222f1806
LC		 2955 i = fmt_xlong(s, temp);
2956 len += i;
2957 s += i;
2958 if (j < 14) {
1da177e4
LT		 2959 *s++ = ':';
2960 ++len;
2961 }
2962 }
2963 }
2964 if (compressing) {
222f1806
LC		 2965 *s++ = ':';
2966 ++len;
1da177e4 2967 }
222f1806 2968 *s = 0;
1da177e4
LT		 2969 return len;
2970}
2971
222f1806
LC		 2972static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2973 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2974{
2975 struct sk_buff *skb = NULL;
2976 __u8 *eth;
2977 struct udphdr *udph;
2978 int datalen;
2979 struct ipv6hdr *iph;
222f1806 2980 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2981 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2982 __be32 *mpls;
34954ddc
FF		 2983 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2984 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2985 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2986 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2987 u16 queue_map;
ca6549af
SW		 2988
2989 if (pkt_dev->nr_labels)
d5f1ce9a 2990 protocol = htons(ETH_P_MPLS_UC);
64053bee 2991
34954ddc 2992 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2993 protocol = htons(ETH_P_8021Q);
34954ddc 2994
64053bee
RO		 2995 /* Update any of the values, used when we're incrementing various
2996 * fields.
2997 */
fd2ea0a7 2998 queue_map = pkt_dev->cur_queue_map;
64053bee
RO		 2999 mod_cur_headers(pkt_dev);
3000
e470757d
SH		 3001 skb = __netdev_alloc_skb(odev,
3002 pkt_dev->cur_pkt_size + 64
3003 + 16 + pkt_dev->pkt_overhead, GFP_NOWAIT);
1da177e4
LT		 3004 if (!skb) {
3005 sprintf(pkt_dev->result, "No memory");
3006 return NULL;
3007 }
3008
3009 skb_reserve(skb, 16);
3010
3011 /* Reserve for ethernet and IP header */
3012 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 3013 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
3014 if (pkt_dev->nr_labels)
3015 mpls_push(mpls, pkt_dev);
34954ddc
FF		 3016
3017 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 3018 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 3019 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 3020 *svlan_tci = build_tci(pkt_dev->svlan_id,
3021 pkt_dev->svlan_cfi,
3022 pkt_dev->svlan_p);
34954ddc 3023 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 3024 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 3025 }
3026 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 3027 *vlan_tci = build_tci(pkt_dev->vlan_id,
3028 pkt_dev->vlan_cfi,
3029 pkt_dev->vlan_p);
34954ddc 3030 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 3031 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 3032 }
3033
27a884dc 3034 skb->network_header = skb->tail;
b0e380b1 3035 skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
ddc7b8e3 3036 skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
fd2ea0a7 3037 skb_set_queue_mapping(skb, queue_map);
ddc7b8e3
ACM		 3038 iph = ipv6_hdr(skb);
3039 udph = udp_hdr(skb);
1da177e4 3040
1da177e4 3041 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 3042 *(__be16 *) &eth[12] = protocol;
64053bee 3043
ca6549af
SW		 3044 /* Eth + IPh + UDPh + mpls */
3045 datalen = pkt_dev->cur_pkt_size - 14 -
3046 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 3047 pkt_dev->pkt_overhead;
1da177e4 3048
222f1806 3049 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 3050 datalen = sizeof(struct pktgen_hdr);
3051 if (net_ratelimit())
222f1806
LC		 3052 printk(KERN_INFO "pktgen: increased datalen to %d\n",
3053 datalen);
1da177e4
LT		 3054 }
3055
3056 udph->source = htons(pkt_dev->cur_udp_src);
3057 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806
LC		 3058 udph->len = htons(datalen + sizeof(struct udphdr));
3059 udph->check = 0; /* No checksum */
1da177e4 3060
d5f1ce9a 3061 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 3062
1ca7768c
FF		 3063 if (pkt_dev->traffic_class) {
3064 /* Version + traffic class + flow (0) */
252e3346 3065 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 3066 }
3067
1da177e4
LT		 3068 iph->hop_limit = 32;
3069
3070 iph->payload_len = htons(sizeof(struct udphdr) + datalen);
3071 iph->nexthdr = IPPROTO_UDP;
3072
3073 ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
3074 ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
3075
b0e380b1 3076 skb->mac_header = (skb->network_header - ETH_HLEN -
16dab72f 3077 pkt_dev->pkt_overhead);
ca6549af 3078 skb->protocol = protocol;
1da177e4
LT		 3079 skb->dev = odev;
3080 skb->pkt_type = PACKET_HOST;
3081
222f1806
LC		 3082 if (pkt_dev->nfrags <= 0)
3083 pgh = (struct pktgen_hdr *)skb_put(skb, datalen);
1da177e4
LT		 3084 else {
3085 int frags = pkt_dev->nfrags;
3086 int i;
3087
222f1806
LC		 3088 pgh = (struct pktgen_hdr *)(((char *)(udph)) + 8);
3089
1da177e4
LT		 3090 if (frags > MAX_SKB_FRAGS)
3091 frags = MAX_SKB_FRAGS;
222f1806
LC		 3092 if (datalen > frags * PAGE_SIZE) {
3093 skb_put(skb, datalen - frags * PAGE_SIZE);
3094 datalen = frags * PAGE_SIZE;
1da177e4
LT		 3095 }
3096
3097 i = 0;
3098 while (datalen > 0) {
3099 struct page *page = alloc_pages(GFP_KERNEL, 0);
3100 skb_shinfo(skb)->frags[i].page = page;
3101 skb_shinfo(skb)->frags[i].page_offset = 0;
3102 skb_shinfo(skb)->frags[i].size =
222f1806 3103 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE);
1da177e4
LT		 3104 datalen -= skb_shinfo(skb)->frags[i].size;
3105 skb->len += skb_shinfo(skb)->frags[i].size;
3106 skb->data_len += skb_shinfo(skb)->frags[i].size;
3107 i++;
3108 skb_shinfo(skb)->nr_frags = i;
3109 }
3110
3111 while (i < frags) {
3112 int rem;
3113
3114 if (i == 0)
3115 break;
3116
3117 rem = skb_shinfo(skb)->frags[i - 1].size / 2;
3118 if (rem == 0)
3119 break;
3120
3121 skb_shinfo(skb)->frags[i - 1].size -= rem;
3122
222f1806
LC		 3123 skb_shinfo(skb)->frags[i] =
3124 skb_shinfo(skb)->frags[i - 1];
1da177e4 3125 get_page(skb_shinfo(skb)->frags[i].page);
222f1806
LC		 3126 skb_shinfo(skb)->frags[i].page =
3127 skb_shinfo(skb)->frags[i - 1].page;
3128 skb_shinfo(skb)->frags[i].page_offset +=
3129 skb_shinfo(skb)->frags[i - 1].size;
1da177e4
LT		 3130 skb_shinfo(skb)->frags[i].size = rem;
3131 i++;
3132 skb_shinfo(skb)->nr_frags = i;
3133 }
3134 }
3135
63adc6fb
SH		 3136 /* Stamp the time, and sequence number,
3137 * convert them to network byte order
3138 * should we update cloned packets too ?
3139 */
222f1806
LC		 3140 if (pgh) {
3141 struct timeval timestamp;
3142
3143 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
3144 pgh->seq_num = htonl(pkt_dev->seq_num);
3145
3146 do_gettimeofday(&timestamp);
3147 pgh->tv_sec = htonl(timestamp.tv_sec);
3148 pgh->tv_usec = htonl(timestamp.tv_usec);
3149 }
34954ddc 3150 /* pkt_dev->seq_num++; FF: you really mean this? */
222f1806 3151
1da177e4
LT		 3152 return skb;
3153}
3154
475ac1e4
SH		 3155static struct sk_buff *fill_packet(struct net_device *odev,
3156 struct pktgen_dev *pkt_dev)
1da177e4 3157{
222f1806 3158 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3159 return fill_packet_ipv6(odev, pkt_dev);
3160 else
3161 return fill_packet_ipv4(odev, pkt_dev);
3162}
3163
222f1806 3164static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3165{
222f1806
LC		 3166 pkt_dev->seq_num = 1;
3167 pkt_dev->idle_acc = 0;
1da177e4 3168 pkt_dev->sofar = 0;
222f1806
LC		 3169 pkt_dev->tx_bytes = 0;
3170 pkt_dev->errors = 0;
1da177e4
LT		 3171}
3172
3173/* Set up structure for sending pkts, clear counters */
3174
3175static void pktgen_run(struct pktgen_thread *t)
3176{
c26a8016 3177 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3178 int started = 0;
3179
25c4e53a 3180 pr_debug("pktgen: entering pktgen_run. %p\n", t);
1da177e4
LT		 3181
3182 if_lock(t);
c26a8016 3183 list_for_each_entry(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3184
3185 /*
3186 * setup odev and create initial packet.
3187 */
3188 pktgen_setup_inject(pkt_dev);
3189
222f1806 3190 if (pkt_dev->odev) {
1da177e4 3191 pktgen_clear_counters(pkt_dev);
222f1806 3192 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3193 pkt_dev->skb = NULL;
fd29cf72
SH		 3194 pkt_dev->started_at =
3195 pkt_dev->next_tx = ktime_now();
3196
16dab72f 3197 set_pkt_overhead(pkt_dev);
222f1806 3198
1da177e4
LT		 3199 strcpy(pkt_dev->result, "Starting");
3200 started++;
222f1806 3201 } else
1da177e4
LT		 3202 strcpy(pkt_dev->result, "Error starting");
3203 }
3204 if_unlock(t);
222f1806
LC		 3205 if (started)
3206 t->control &= ~(T_STOP);
1da177e4
LT		 3207}
3208
3209static void pktgen_stop_all_threads_ifs(void)
3210{
cdcdbe0b 3211 struct pktgen_thread *t;
1da177e4 3212
25c4e53a 3213 pr_debug("pktgen: entering pktgen_stop_all_threads_ifs.\n");
1da177e4 3214
6146e6a4 3215 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3216
3217 list_for_each_entry(t, &pktgen_threads, th_list)
95ed63f7 3218 t->control |= T_STOP;
cdcdbe0b 3219
6146e6a4 3220 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3221}
3222
648fda74 3223static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3224{
648fda74 3225 const struct pktgen_dev *pkt_dev;
1da177e4 3226
c26a8016 3227 list_for_each_entry(pkt_dev, &t->if_list, list)
648fda74
SH		 3228 if (pkt_dev->running)
3229 return 1;
3230 return 0;
1da177e4
LT		 3231}
3232
222f1806 3233static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3234{
222f1806 3235 if_lock(t);
1da177e4 3236
222f1806 3237 while (thread_is_running(t)) {
1da177e4 3238
222f1806 3239 if_unlock(t);
1da177e4 3240
222f1806 3241 msleep_interruptible(100);
1da177e4 3242
222f1806
LC		 3243 if (signal_pending(current))
3244 goto signal;
3245 if_lock(t);
3246 }
3247 if_unlock(t);
3248 return 1;
3249signal:
3250 return 0;
1da177e4
LT		 3251}
3252
3253static int pktgen_wait_all_threads_run(void)
3254{
cdcdbe0b 3255 struct pktgen_thread *t;
1da177e4 3256 int sig = 1;
222f1806 3257
6146e6a4 3258 mutex_lock(&pktgen_thread_lock);
cdcdbe0b
LC		 3259
3260 list_for_each_entry(t, &pktgen_threads, th_list) {
1da177e4 3261 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3262 if (sig == 0)
3263 break;
1da177e4 3264 }
cdcdbe0b
LC		 3265
3266 if (sig == 0)
3267 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3268 t->control |= (T_STOP);
cdcdbe0b 3269
6146e6a4 3270 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3271 return sig;
3272}
3273
3274static void pktgen_run_all_threads(void)
3275{
cdcdbe0b 3276 struct pktgen_thread *t;
1da177e4 3277
25c4e53a 3278 pr_debug("pktgen: entering pktgen_run_all_threads.\n");
1da177e4 3279
6146e6a4 3280 mutex_lock(&pktgen_thread_lock);
1da177e4 3281
cdcdbe0b 3282 list_for_each_entry(t, &pktgen_threads, th_list)
1da177e4 3283 t->control |= (T_RUN);
cdcdbe0b 3284
6146e6a4 3285 mutex_unlock(&pktgen_thread_lock);
1da177e4 3286
63adc6fb
SH		 3287 /* Propagate thread->control */
3288 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3289
1da177e4
LT		 3290 pktgen_wait_all_threads_run();
3291}
3292
eb37b41c
JB		 3293static void pktgen_reset_all_threads(void)
3294{
3295 struct pktgen_thread *t;
3296
3297 pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
3298
3299 mutex_lock(&pktgen_thread_lock);
3300
3301 list_for_each_entry(t, &pktgen_threads, th_list)
3302 t->control |= (T_REMDEVALL);
3303
3304 mutex_unlock(&pktgen_thread_lock);
3305
63adc6fb
SH		 3306 /* Propagate thread->control */
3307 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c
JB		 3308
3309 pktgen_wait_all_threads_run();
3310}
3311
1da177e4
LT		 3312static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3313{
fd29cf72 3314 __u64 bps, mbps, pps;
222f1806 3315 char *p = pkt_dev->result;
fd29cf72
SH		 3316 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3317 pkt_dev->started_at);
3318 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3319
3320 p += sprintf(p, "OK: %llu(c%llu+d%llu) nsec, %llu (%dbyte,%dfrags)\n",
3321 (unsigned long long)ktime_to_us(elapsed),
3322 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3323 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3324 (unsigned long long)pkt_dev->sofar,
3325 pkt_dev->cur_pkt_size, nr_frags);
3326
fd29cf72
SH		 3327 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3328 ktime_to_ns(elapsed));
222f1806
LC		 3329
3330 bps = pps * 8 * pkt_dev->cur_pkt_size;
3331
3332 mbps = bps;
3333 do_div(mbps, 1000000);
3334 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3335 (unsigned long long)pps,
3336 (unsigned long long)mbps,
3337 (unsigned long long)bps,
3338 (unsigned long long)pkt_dev->errors);
1da177e4 3339}
1da177e4
LT		 3340
3341/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3342static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3343{
222f1806 3344 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3345
222f1806 3346 if (!pkt_dev->running) {
25a8b254 3347 printk(KERN_WARNING "pktgen: interface: %s is already "
593f63b0 3348 "stopped\n", pkt_dev->odevname);
222f1806
LC		 3349 return -EINVAL;
3350 }
1da177e4 3351
3bda06a3
SH		 3352 kfree_skb(pkt_dev->skb);
3353 pkt_dev->skb = NULL;
fd29cf72 3354 pkt_dev->stopped_at = ktime_now();
222f1806 3355 pkt_dev->running = 0;
1da177e4 3356
95ed63f7 3357 show_results(pkt_dev, nr_frags);
1da177e4 3358
222f1806 3359 return 0;
1da177e4
LT		 3360}
3361
222f1806 3362static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3363{
c26a8016 3364 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3365
1da177e4
LT		 3366 if_lock(t);
3367
c26a8016
LC		 3368 list_for_each_entry(pkt_dev, &t->if_list, list) {
3369 if (!pkt_dev->running)
222f1806
LC		 3370 continue;
3371 if (best == NULL)
c26a8016 3372 best = pkt_dev;
fd29cf72 3373 else if (ktime_lt(pkt_dev->next_tx, best->next_tx))
c26a8016 3374 best = pkt_dev;
1da177e4
LT		 3375 }
3376 if_unlock(t);
222f1806 3377 return best;
1da177e4
LT		 3378}
3379
222f1806
LC		 3380static void pktgen_stop(struct pktgen_thread *t)
3381{
c26a8016 3382 struct pktgen_dev *pkt_dev;
1da177e4 3383
25c4e53a 3384 pr_debug("pktgen: entering pktgen_stop\n");
1da177e4 3385
222f1806 3386 if_lock(t);
1da177e4 3387
c26a8016
LC		 3388 list_for_each_entry(pkt_dev, &t->if_list, list) {
3389 pktgen_stop_device(pkt_dev);
95ed63f7 3390 }
1da177e4 3391
222f1806 3392 if_unlock(t);
1da177e4
LT		 3393}
3394
95ed63f7
AK		 3395/*
3396 * one of our devices needs to be removed - find it
3397 * and remove it
3398 */
3399static void pktgen_rem_one_if(struct pktgen_thread *t)
3400{
c26a8016
LC		 3401 struct list_head *q, *n;
3402 struct pktgen_dev *cur;
95ed63f7 3403
25c4e53a 3404 pr_debug("pktgen: entering pktgen_rem_one_if\n");
95ed63f7
AK		 3405
3406 if_lock(t);
3407
c26a8016
LC		 3408 list_for_each_safe(q, n, &t->if_list) {
3409 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3410
222f1806
LC		 3411 if (!cur->removal_mark)
3412 continue;
95ed63f7 3413
86dc1ad2 3414 kfree_skb(cur->skb);
95ed63f7
AK		 3415 cur->skb = NULL;
3416
3417 pktgen_remove_device(t, cur);
3418
3419 break;
3420 }
3421
3422 if_unlock(t);
3423}
3424
222f1806 3425static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3426{
c26a8016
LC		 3427 struct list_head *q, *n;
3428 struct pktgen_dev *cur;
222f1806
LC		 3429
3430 /* Remove all devices, free mem */
95ed63f7 3431
25c4e53a 3432 pr_debug("pktgen: entering pktgen_rem_all_ifs\n");
222f1806 3433 if_lock(t);
1da177e4 3434
c26a8016
LC		 3435 list_for_each_safe(q, n, &t->if_list) {
3436 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3437
86dc1ad2 3438 kfree_skb(cur->skb);
95ed63f7
AK		 3439 cur->skb = NULL;
3440
1da177e4
LT		 3441 pktgen_remove_device(t, cur);
3442 }
3443
222f1806 3444 if_unlock(t);
1da177e4
LT		 3445}
3446
222f1806 3447static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3448{
222f1806 3449 /* Remove from the thread list */
1da177e4 3450
ee74baa7 3451 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3452
6146e6a4 3453 mutex_lock(&pktgen_thread_lock);
1da177e4 3454
cdcdbe0b
LC		 3455 list_del(&t->th_list);
3456
6146e6a4 3457 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3458}
3459
ef87979c 3460static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3461{
fd29cf72 3462 ktime_t idle_start = ktime_now();
ef87979c
SH		 3463 schedule();
3464 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3465}
3791decb 3466
ef87979c
SH		 3467static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3468{
3469 ktime_t idle_start = ktime_now();
3791decb 3470
ef87979c
SH		 3471 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3472 if (signal_pending(current))
3473 break;
3474
3475 if (need_resched())
3476 pktgen_resched(pkt_dev);
3477 else
3478 cpu_relax();
3479 }
fd29cf72 3480 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3481}
3482
475ac1e4 3483static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3484{
00829823 3485 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3486 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3487 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3488 struct netdev_queue *txq;
fd2ea0a7 3489 u16 queue_map;
1da177e4
LT		 3490 int ret;
3491
ef87979c
SH		 3492 /* If device is offline, then don't send */
3493 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3494 pktgen_stop_device(pkt_dev);
3495 return;
fd2ea0a7
DM		 3496 }
3497
ef87979c
SH		 3498 /* This is max DELAY, this has special meaning of
3499 * "never transmit"
3500 */
3501 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3502 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3503 return;
1da177e4 3504 }
222f1806 3505
ef87979c 3506 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3507 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3508 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3509 /* build a new pkt */
3510 kfree_skb(pkt_dev->skb);
3511
3512 pkt_dev->skb = fill_packet(odev, pkt_dev);
3513 if (pkt_dev->skb == NULL) {
3514 printk(KERN_ERR "pktgen: ERROR: couldn't "
3515 "allocate skb in fill_packet.\n");
3516 schedule();
3517 pkt_dev->clone_count--; /* back out increment, OOM */
3518 return;
1da177e4 3519 }
baac8564 3520 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3521 pkt_dev->allocated_skbs++;
3522 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3523 }
95ed63f7 3524
ef87979c
SH		 3525 if (pkt_dev->delay && pkt_dev->last_ok)
3526 spin(pkt_dev, pkt_dev->next_tx);
3527
fd2ea0a7
DM		 3528 queue_map = skb_get_queue_mapping(pkt_dev->skb);
3529 txq = netdev_get_tx_queue(odev, queue_map);
3530
3531 __netif_tx_lock_bh(txq);
5b8db2f5 3532
0835acfe 3533 if (unlikely(netif_tx_queue_stopped(txq) || netif_tx_queue_frozen(txq))) {
ef87979c 3534 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3535 pkt_dev->last_ok = 0;
3536 goto unlock;
3537 }
3538 atomic_inc(&(pkt_dev->skb->users));
3539 ret = (*xmit)(pkt_dev->skb, odev);
ef87979c
SH		 3540
3541 switch (ret) {
3542 case NETDEV_TX_OK:
3543 txq_trans_update(txq);
3544 pkt_dev->last_ok = 1;
3545 pkt_dev->sofar++;
3546 pkt_dev->seq_num++;
baac8564 3547 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3548 break;
f466dba1
JF		 3549 case NET_XMIT_DROP:
3550 case NET_XMIT_CN:
3551 case NET_XMIT_POLICED:
3552 /* skb has been consumed */
3553 pkt_dev->errors++;
3554 break;
ef87979c
SH		 3555 default: /* Drivers are not supposed to return other values! */
3556 if (net_ratelimit())
3557 pr_info("pktgen: %s xmit error: %d\n",
593f63b0 3558 pkt_dev->odevname, ret);
ef87979c
SH		 3559 pkt_dev->errors++;
3560 /* fallthru */
3561 case NETDEV_TX_LOCKED:
3562 case NETDEV_TX_BUSY:
3563 /* Retry it next time */
3564 atomic_dec(&(pkt_dev->skb->users));
3565 pkt_dev->last_ok = 0;
222f1806 3566 }
0835acfe 3567unlock:
fd2ea0a7 3568 __netif_tx_unlock_bh(txq);
222f1806 3569
1da177e4
LT		 3570 /* If pkt_dev->count is zero, then run forever */
3571 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3572 pktgen_wait_for_skb(pkt_dev);
222f1806 3573
1da177e4
LT		 3574 /* Done with this */
3575 pktgen_stop_device(pkt_dev);
222f1806 3576 }
222f1806 3577}
1da177e4 3578
4ec93edb 3579/*
1da177e4
LT		 3580 * Main loop of the thread goes here
3581 */
3582
ee74baa7 3583static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3584{
3585 DEFINE_WAIT(wait);
ee74baa7 3586 struct pktgen_thread *t = arg;
222f1806 3587 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3588 int cpu = t->cpu;
1da177e4 3589
ee74baa7 3590 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3591
3592 init_waitqueue_head(&t->queue);
d3ede327 3593 complete(&t->start_done);
1da177e4 3594
63adc6fb
SH		 3595 pr_debug("pktgen: starting pktgen/%d: pid=%d\n",
3596 cpu, task_pid_nr(current));
1da177e4 3597
ee74baa7 3598 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3599
83144186
RW		 3600 set_freezable();
3601
ee74baa7
DM		 3602 while (!kthread_should_stop()) {
3603 pkt_dev = next_to_run(t);
1da177e4 3604
ef87979c
SH		 3605 if (unlikely(!pkt_dev && t->control == 0)) {
3606 wait_event_interruptible_timeout(t->queue,
3607 t->control != 0,
3608 HZ/10);
1b3f720b 3609 try_to_freeze();
ef87979c 3610 continue;
ee74baa7 3611 }
1da177e4 3612
ee74baa7 3613 __set_current_state(TASK_RUNNING);
222f1806 3614
ef87979c 3615 if (likely(pkt_dev)) {
1da177e4
LT		 3616 pktgen_xmit(pkt_dev);
3617
ef87979c
SH		 3618 if (need_resched())
3619 pktgen_resched(pkt_dev);
3620 else
3621 cpu_relax();
3622 }
3623
222f1806 3624 if (t->control & T_STOP) {
1da177e4
LT		 3625 pktgen_stop(t);
3626 t->control &= ~(T_STOP);
3627 }
3628
222f1806 3629 if (t->control & T_RUN) {
1da177e4
LT		 3630 pktgen_run(t);
3631 t->control &= ~(T_RUN);
3632 }
3633
222f1806 3634 if (t->control & T_REMDEVALL) {
1da177e4 3635 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3636 t->control &= ~(T_REMDEVALL);
3637 }
3638
222f1806 3639 if (t->control & T_REMDEV) {
95ed63f7 3640 pktgen_rem_one_if(t);
1da177e4
LT		 3641 t->control &= ~(T_REMDEV);
3642 }
3643
09fe3ef4
AM		 3644 try_to_freeze();
3645
ee74baa7 3646 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3647 }
1da177e4 3648
25c4e53a 3649 pr_debug("pktgen: %s stopping all device\n", t->tsk->comm);
222f1806 3650 pktgen_stop(t);
1da177e4 3651
25c4e53a 3652 pr_debug("pktgen: %s removing all device\n", t->tsk->comm);
222f1806 3653 pktgen_rem_all_ifs(t);
1da177e4 3654
25c4e53a 3655 pr_debug("pktgen: %s removing thread.\n", t->tsk->comm);
222f1806 3656 pktgen_rem_thread(t);
cdcdbe0b 3657
ee74baa7 3658 return 0;
1da177e4
LT		 3659}
3660
222f1806 3661static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3662 const char *ifname, bool exact)
1da177e4 3663{
c26a8016 3664 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3665 size_t len = strlen(ifname);
222f1806 3666
3e984840 3667 if_lock(t);
c26a8016 3668 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3669 if (strncmp(p->odevname, ifname, len) == 0) {
3670 if (p->odevname[len]) {
3671 if (exact || p->odevname[len] != '@')
3672 continue;
3673 }
c26a8016 3674 pkt_dev = p;
222f1806
LC		 3675 break;
3676 }
222f1806
LC		 3677
3678 if_unlock(t);
25c4e53a 3679 pr_debug("pktgen: find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3680 return pkt_dev;
1da177e4
LT		 3681}
3682
4ec93edb
YH		 3683/*
3684 * Adds a dev at front of if_list.
1da177e4
LT		 3685 */
3686
222f1806
LC		 3687static int add_dev_to_thread(struct pktgen_thread *t,
3688 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3689{
3690 int rv = 0;
222f1806
LC		 3691
3692 if_lock(t);
3693
3694 if (pkt_dev->pg_thread) {
25a8b254
DM		 3695 printk(KERN_ERR "pktgen: ERROR: already assigned "
3696 "to a thread.\n");
222f1806
LC		 3697 rv = -EBUSY;
3698 goto out;
3699 }
c26a8016
LC		 3700
3701 list_add(&pkt_dev->list, &t->if_list);
222f1806 3702 pkt_dev->pg_thread = t;
1da177e4
LT		 3703 pkt_dev->running = 0;
3704
222f1806
LC		 3705out:
3706 if_unlock(t);
3707 return rv;
1da177e4
LT		 3708}
3709
3710/* Called under thread lock */
3711
222f1806 3712static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3713{
222f1806 3714 struct pktgen_dev *pkt_dev;
39df232f 3715 int err;
3291b9db 3716 int node = cpu_to_node(t->cpu);
222f1806 3717
1da177e4
LT		 3718 /* We don't allow a device to be on several threads */
3719
d50a6b56
SH		 3720 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3721 if (pkt_dev) {
25a8b254 3722 printk(KERN_ERR "pktgen: ERROR: interface already used.\n");
222f1806
LC		 3723 return -EBUSY;
3724 }
d50a6b56 3725
3291b9db 3726 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3727 if (!pkt_dev)
3728 return -ENOMEM;
3729
593f63b0 3730 strcpy(pkt_dev->odevname, ifname);
3291b9db
ED		 3731 pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3732 node);
d50a6b56
SH		 3733 if (pkt_dev->flows == NULL) {
3734 kfree(pkt_dev);
3735 return -ENOMEM;
3736 }
222f1806 3737 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3738
95ed63f7 3739 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3740 pkt_dev->min_pkt_size = ETH_ZLEN;
3741 pkt_dev->max_pkt_size = ETH_ZLEN;
3742 pkt_dev->nfrags = 0;
3743 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3744 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3745 pkt_dev->count = pg_count_d;
3746 pkt_dev->sofar = 0;
222f1806 3747 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3748 pkt_dev->udp_src_max = 9;
3749 pkt_dev->udp_dst_min = 9;
3750 pkt_dev->udp_dst_max = 9;
3751
34954ddc
FF		 3752 pkt_dev->vlan_p = 0;
3753 pkt_dev->vlan_cfi = 0;
3754 pkt_dev->vlan_id = 0xffff;
3755 pkt_dev->svlan_p = 0;
3756 pkt_dev->svlan_cfi = 0;
3757 pkt_dev->svlan_id = 0xffff;
e99b99b4 3758 pkt_dev->node = -1;
34954ddc 3759
39df232f
SH		 3760 err = pktgen_setup_dev(pkt_dev, ifname);
3761 if (err)
3762 goto out1;
d50a6b56 3763
5efdccbc
DL		 3764 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3765 &pktgen_if_fops, pkt_dev);
39df232f 3766 if (!pkt_dev->entry) {
25a8b254 3767 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
d50a6b56 3768 PG_PROC_DIR, ifname);
39df232f
SH		 3769 err = -EINVAL;
3770 goto out2;
d50a6b56 3771 }
a553e4a6
JHS		 3772#ifdef CONFIG_XFRM
3773 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3774 pkt_dev->ipsproto = IPPROTO_ESP;
3775#endif
d50a6b56
SH		 3776
3777 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3778out2:
3779 dev_put(pkt_dev->odev);
3780out1:
a553e4a6
JHS		 3781#ifdef CONFIG_XFRM
3782 free_SAs(pkt_dev);
3783#endif
1d0ebfe7 3784 vfree(pkt_dev->flows);
39df232f
SH		 3785 kfree(pkt_dev);
3786 return err;
1da177e4
LT		 3787}
3788
ee74baa7 3789static int __init pktgen_create_thread(int cpu)
1da177e4 3790{
cdcdbe0b 3791 struct pktgen_thread *t;
d50a6b56 3792 struct proc_dir_entry *pe;
ee74baa7 3793 struct task_struct *p;
222f1806 3794
3291b9db
ED		 3795 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3796 cpu_to_node(cpu));
222f1806 3797 if (!t) {
25a8b254
DM		 3798 printk(KERN_ERR "pktgen: ERROR: out of memory, can't "
3799 "create new thread.\n");
222f1806
LC		 3800 return -ENOMEM;
3801 }
3802
222f1806 3803 spin_lock_init(&t->if_lock);
1da177e4 3804 t->cpu = cpu;
222f1806 3805
ee74baa7
DM		 3806 INIT_LIST_HEAD(&t->if_list);
3807
3808 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3809 init_completion(&t->start_done);
ee74baa7
DM		 3810
3811 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3812 if (IS_ERR(p)) {
25a8b254
DM		 3813 printk(KERN_ERR "pktgen: kernel_thread() failed "
3814 "for cpu %d\n", t->cpu);
ee74baa7
DM		 3815 list_del(&t->th_list);
3816 kfree(t);
3817 return PTR_ERR(p);
3818 }
3819 kthread_bind(p, cpu);
3820 t->tsk = p;
3821
5efdccbc
DL		 3822 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3823 &pktgen_thread_fops, t);
222f1806 3824 if (!pe) {
25a8b254 3825 printk(KERN_ERR "pktgen: cannot create %s/%s procfs entry.\n",
ee74baa7
DM		 3826 PG_PROC_DIR, t->tsk->comm);
3827 kthread_stop(p);
3828 list_del(&t->th_list);
222f1806
LC		 3829 kfree(t);
3830 return -EINVAL;
3831 }
d50a6b56 3832
ee74baa7 3833 wake_up_process(p);
d3ede327 3834 wait_for_completion(&t->start_done);
1da177e4
LT		 3835
3836 return 0;
3837}
3838
4ec93edb
YH		 3839/*
3840 * Removes a device from the thread if_list.
1da177e4 3841 */
222f1806
LC		 3842static void _rem_dev_from_if_list(struct pktgen_thread *t,
3843 struct pktgen_dev *pkt_dev)
1da177e4 3844{
c26a8016
LC		 3845 struct list_head *q, *n;
3846 struct pktgen_dev *p;
1da177e4 3847
c26a8016
LC		 3848 list_for_each_safe(q, n, &t->if_list) {
3849 p = list_entry(q, struct pktgen_dev, list);
3850 if (p == pkt_dev)
3851 list_del(&p->list);
1da177e4
LT		 3852 }
3853}
3854
222f1806
LC		 3855static int pktgen_remove_device(struct pktgen_thread *t,
3856 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3857{
3858
25c4e53a 3859 pr_debug("pktgen: remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3860
222f1806 3861 if (pkt_dev->running) {
25a8b254
DM		 3862 printk(KERN_WARNING "pktgen: WARNING: trying to remove a "
3863 "running interface, stopping it now.\n");
222f1806
LC		 3864 pktgen_stop_device(pkt_dev);
3865 }
3866
3867 /* Dis-associate from the interface */
1da177e4
LT		 3868
3869 if (pkt_dev->odev) {
3870 dev_put(pkt_dev->odev);
222f1806
LC		 3871 pkt_dev->odev = NULL;
3872 }
3873
1da177e4
LT		 3874 /* And update the thread if_list */
3875
3876 _rem_dev_from_if_list(t, pkt_dev);
3877
39df232f
SH		 3878 if (pkt_dev->entry)
3879 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3880
a553e4a6
JHS		 3881#ifdef CONFIG_XFRM
3882 free_SAs(pkt_dev);
3883#endif
1d0ebfe7 3884 vfree(pkt_dev->flows);
1da177e4 3885 kfree(pkt_dev);
222f1806 3886 return 0;
1da177e4
LT		 3887}
3888
222f1806 3889static int __init pg_init(void)
1da177e4
LT		 3890{
3891 int cpu;
d50a6b56 3892 struct proc_dir_entry *pe;
1da177e4 3893
25a8b254 3894 printk(KERN_INFO "%s", version);
1da177e4 3895
457c4cbc 3896 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3897 if (!pg_proc_dir)
3898 return -ENODEV;
1da177e4 3899
25296d59 3900 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3901 if (pe == NULL) {
25a8b254
DM		 3902 printk(KERN_ERR "pktgen: ERROR: cannot create %s "
3903 "procfs entry.\n", PGCTRL);
457c4cbc 3904 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3905 return -EINVAL;
3906 }
1da177e4 3907
1da177e4
LT		 3908 /* Register us to receive netdevice events */
3909 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3910
670c02c2 3911 for_each_online_cpu(cpu) {
8024bb24 3912 int err;
1da177e4 3913
ee74baa7 3914 err = pktgen_create_thread(cpu);
8024bb24 3915 if (err)
25a8b254
DM		 3916 printk(KERN_WARNING "pktgen: WARNING: Cannot create "
3917 "thread for cpu %d (%d)\n", cpu, err);
222f1806 3918 }
8024bb24
LC		 3919
3920 if (list_empty(&pktgen_threads)) {
25a8b254
DM		 3921 printk(KERN_ERR "pktgen: ERROR: Initialization failed for "
3922 "all threads\n");
8024bb24
LC		 3923 unregister_netdevice_notifier(&pktgen_notifier_block);
3924 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3925 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3926 return -ENODEV;
3927 }
3928
222f1806 3929 return 0;
1da177e4
LT		 3930}
3931
3932static void __exit pg_cleanup(void)
3933{
cdcdbe0b
LC		 3934 struct pktgen_thread *t;
3935 struct list_head *q, *n;
1da177e4
LT		 3936 wait_queue_head_t queue;
3937 init_waitqueue_head(&queue);
3938
222f1806 3939 /* Stop all interfaces & threads */
1da177e4 3940
cdcdbe0b
LC		 3941 list_for_each_safe(q, n, &pktgen_threads) {
3942 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3943 kthread_stop(t->tsk);
3944 kfree(t);
222f1806 3945 }
1da177e4 3946
222f1806 3947 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3948 unregister_netdevice_notifier(&pktgen_notifier_block);
3949
222f1806 3950 /* Clean up proc file system */
d50a6b56 3951 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3952 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3953}
3954
1da177e4
LT		 3955module_init(pg_init);
3956module_exit(pg_cleanup);
3957
c3d2f52d 3958MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3959MODULE_DESCRIPTION("Packet Generator tool");
3960MODULE_LICENSE("GPL");
c3d2f52d 3961MODULE_VERSION(VERSION);
1da177e4 3962module_param(pg_count_d, int, 0);
c3d2f52d 3963MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3964module_param(pg_delay_d, int, 0);
c3d2f52d 3965MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3966module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3967MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3968module_param(debug, int, 0);
c3d2f52d 3969MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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