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net: add priority field to pktgen
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CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
1da177e4
LT		 72 * way. The if_lock should be possible to remove when add/rem_device is merged
73 * into this too.
74 *
4ec93edb
YH		 75 * By design there should only be *one* "controlling" process. In practice
76 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 77 * to /proc gives result code thats should be read be the "writer".
b4099fab 78 * For practical use this should be no problem.
1da177e4 79 *
4ec93edb
YH		 80 * Note when adding devices to a specific CPU there good idea to also assign
81 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 82 * --ro
83 *
4ec93edb 84 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 85 * memleak 030710- KJP
86 *
87 * First "ranges" functionality for ipv6 030726 --ro
88 *
89 * Included flow support. 030802 ANK.
90 *
91 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 92 *
1da177e4
LT		 93 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
94 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
95 *
4ec93edb 96 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 97 * <shemminger@osdl.org> 040923
98 *
4ec93edb 99 * Randy Dunlap fixed u64 printk compiler waring
1da177e4
LT		 100 *
101 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
102 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
103 *
4ec93edb 104 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 105 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
106 *
4ec93edb 107 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 108 * 050103
ca6549af
SW		 109 *
110 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
111 *
34954ddc
FF		 112 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
113 *
ce5d0b47
AR		 114 * Fixed src_mac command to set source mac of packet to value specified in
115 * command by Adit Ranadive <adit.262@gmail.com>
116 *
1da177e4 117 */
f9467eae
JP		 118
119#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
120
1da177e4
LT		 121#include <linux/sys.h>
122#include <linux/types.h>
123#include <linux/module.h>
124#include <linux/moduleparam.h>
125#include <linux/kernel.h>
222fa076 126#include <linux/mutex.h>
1da177e4
LT		 127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/vmalloc.h>
1da177e4
LT		 130#include <linux/unistd.h>
131#include <linux/string.h>
132#include <linux/ptrace.h>
133#include <linux/errno.h>
134#include <linux/ioport.h>
135#include <linux/interrupt.h>
4fc268d2 136#include <linux/capability.h>
2bc481cf 137#include <linux/hrtimer.h>
09fe3ef4 138#include <linux/freezer.h>
1da177e4
LT		 139#include <linux/delay.h>
140#include <linux/timer.h>
cdcdbe0b 141#include <linux/list.h>
1da177e4
LT		 142#include <linux/init.h>
143#include <linux/skbuff.h>
144#include <linux/netdevice.h>
145#include <linux/inet.h>
146#include <linux/inetdevice.h>
147#include <linux/rtnetlink.h>
148#include <linux/if_arp.h>
34954ddc 149#include <linux/if_vlan.h>
1da177e4
LT		 150#include <linux/in.h>
151#include <linux/ip.h>
152#include <linux/ipv6.h>
153#include <linux/udp.h>
154#include <linux/proc_fs.h>
d50a6b56 155#include <linux/seq_file.h>
1da177e4 156#include <linux/wait.h>
f404e9a6 157#include <linux/etherdevice.h>
ee74baa7 158#include <linux/kthread.h>
457c4cbc 159#include <net/net_namespace.h>
1da177e4
LT		 160#include <net/checksum.h>
161#include <net/ipv6.h>
162#include <net/addrconf.h>
a553e4a6
JHS		 163#ifdef CONFIG_XFRM
164#include <net/xfrm.h>
165#endif
1da177e4
LT		 166#include <asm/byteorder.h>
167#include <linux/rcupdate.h>
1977f032 168#include <linux/bitops.h>
63adc6fb
SH		 169#include <linux/io.h>
170#include <linux/timex.h>
171#include <linux/uaccess.h>
1da177e4 172#include <asm/dma.h>
222f1806 173#include <asm/div64.h> /* do_div */
1da177e4 174
43d28b65 175#define VERSION "2.74"
1da177e4 176#define IP_NAME_SZ 32
ca6549af 177#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 178#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 179
f9467eae
JP		 180#define func_enter() pr_debug("entering %s\n", __func__);
181
1da177e4 182/* Device flag bits */
222f1806
LC		 183#define F_IPSRC_RND (1<<0) /* IP-Src Random */
184#define F_IPDST_RND (1<<1) /* IP-Dst Random */
185#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
186#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
187#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
188#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
189#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
190#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 191#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 192#define F_VID_RND (1<<9) /* Random VLAN ID */
193#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 194#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 195#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 196#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 197#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 198#define F_NODE (1<<15) /* Node memory alloc*/
1da177e4
LT		 199
200/* Thread control flag bits */
6b80d6a6
SH		 201#define T_STOP (1<<0) /* Stop run */
202#define T_RUN (1<<1) /* Start run */
203#define T_REMDEVALL (1<<2) /* Remove all devs */
204#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 205
1da177e4
LT		 206/* If lock -- can be removed after some work */
207#define if_lock(t) spin_lock(&(t->if_lock));
208#define if_unlock(t) spin_unlock(&(t->if_lock));
209
210/* Used to help with determining the pkts on receive */
211#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 212#define PG_PROC_DIR "pktgen"
213#define PGCTRL "pgctrl"
63adc6fb 214static struct proc_dir_entry *pg_proc_dir;
1da177e4
LT		 215
216#define MAX_CFLOWS 65536
217
34954ddc
FF		 218#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
219#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
220
222f1806 221struct flow_state {
252e3346 222 __be32 cur_daddr;
222f1806 223 int count;
a553e4a6
JHS		 224#ifdef CONFIG_XFRM
225 struct xfrm_state *x;
226#endif
007a531b 227 __u32 flags;
1da177e4
LT		 228};
229
007a531b
JHS		 230/* flow flag bits */
231#define F_INIT (1<<0) /* flow has been initialized */
232
1da177e4 233struct pktgen_dev {
1da177e4
LT		 234 /*
235 * Try to keep frequent/infrequent used vars. separated.
236 */
39df232f
SH		 237 struct proc_dir_entry *entry; /* proc file */
238 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 239 struct list_head list; /* chaining in the thread's run-queue */
1da177e4 240
63adc6fb 241 int running; /* if false, the test will stop */
1da177e4 242
222f1806
LC		 243 /* If min != max, then we will either do a linear iteration, or
244 * we will do a random selection from within the range.
245 */
246 __u32 flags;
95ed63f7
AK		 247 int removal_mark; /* non-zero => the device is marked for
248 * removal by worker thread */
1da177e4 249
222f1806
LC		 250 int min_pkt_size; /* = ETH_ZLEN; */
251 int max_pkt_size; /* = ETH_ZLEN; */
16dab72f 252 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 253 int nfrags;
fd29cf72
SH		 254 u64 delay; /* nano-seconds */
255
222f1806
LC		 256 __u64 count; /* Default No packets to send */
257 __u64 sofar; /* How many pkts we've sent so far */
258 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 259 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 260
261 /* runtime counters relating to clone_skb */
222f1806
LC		 262
263 __u64 allocated_skbs;
264 __u32 clone_count;
265 int last_ok; /* Was last skb sent?
63adc6fb
SH		 266 * Or a failed transmit of some sort?
267 * This will keep sequence numbers in order
222f1806 268 */
fd29cf72
SH		 269 ktime_t next_tx;
270 ktime_t started_at;
271 ktime_t stopped_at;
272 u64 idle_acc; /* nano-seconds */
273
222f1806
LC		 274 __u32 seq_num;
275
63adc6fb
SH		 276 int clone_skb; /*
277 * Use multiple SKBs during packet gen.
278 * If this number is greater than 1, then
279 * that many copies of the same packet will be
280 * sent before a new packet is allocated.
281 * If you want to send 1024 identical packets
282 * before creating a new packet,
283 * set clone_skb to 1024.
222f1806
LC		 284 */
285
286 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
287 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
288 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
289 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
290
291 struct in6_addr in6_saddr;
292 struct in6_addr in6_daddr;
293 struct in6_addr cur_in6_daddr;
294 struct in6_addr cur_in6_saddr;
1da177e4 295 /* For ranges */
222f1806
LC		 296 struct in6_addr min_in6_daddr;
297 struct in6_addr max_in6_daddr;
298 struct in6_addr min_in6_saddr;
299 struct in6_addr max_in6_saddr;
300
301 /* If we're doing ranges, random or incremental, then this
302 * defines the min/max for those ranges.
303 */
252e3346
AV		 304 __be32 saddr_min; /* inclusive, source IP address */
305 __be32 saddr_max; /* exclusive, source IP address */
306 __be32 daddr_min; /* inclusive, dest IP address */
307 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 308
309 __u16 udp_src_min; /* inclusive, source UDP port */
310 __u16 udp_src_max; /* exclusive, source UDP port */
311 __u16 udp_dst_min; /* inclusive, dest UDP port */
312 __u16 udp_dst_max; /* exclusive, dest UDP port */
313
1ca7768c 314 /* DSCP + ECN */
63adc6fb
SH		 315 __u8 tos; /* six MSB of (former) IPv4 TOS
316 are for dscp codepoint */
317 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
318 (see RFC 3260, sec. 4) */
1ca7768c 319
ca6549af
SW		 320 /* MPLS */
321 unsigned nr_labels; /* Depth of stack, 0 = no MPLS */
322 __be32 labels[MAX_MPLS_LABELS];
323
34954ddc
FF		 324 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
325 __u8 vlan_p;
326 __u8 vlan_cfi;
327 __u16 vlan_id; /* 0xffff means no vlan tag */
328
329 __u8 svlan_p;
330 __u8 svlan_cfi;
331 __u16 svlan_id; /* 0xffff means no svlan tag */
332
222f1806
LC		 333 __u32 src_mac_count; /* How many MACs to iterate through */
334 __u32 dst_mac_count; /* How many MACs to iterate through */
335
336 unsigned char dst_mac[ETH_ALEN];
337 unsigned char src_mac[ETH_ALEN];
338
339 __u32 cur_dst_mac_offset;
340 __u32 cur_src_mac_offset;
252e3346
AV		 341 __be32 cur_saddr;
342 __be32 cur_daddr;
66ed1e5e 343 __u16 ip_id;
222f1806
LC		 344 __u16 cur_udp_dst;
345 __u16 cur_udp_src;
45b270f8 346 __u16 cur_queue_map;
222f1806 347 __u32 cur_pkt_size;
baac8564 348 __u32 last_pkt_size;
222f1806
LC		 349
350 __u8 hh[14];
351 /* = {
352 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
353
354 We fill in SRC address later
355 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
356 0x08, 0x00
357 };
358 */
359 __u16 pad; /* pad out the hh struct to an even 16 bytes */
360
63adc6fb 361 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 362 * are transmitting the same one multiple times
363 */
63adc6fb
SH		 364 struct net_device *odev; /* The out-going device.
365 * Note that the device should have it's
366 * pg_info pointer pointing back to this
367 * device.
368 * Set when the user specifies the out-going
369 * device name (not when the inject is
370 * started as it used to do.)
371 */
593f63b0 372 char odevname[32];
1da177e4 373 struct flow_state *flows;
222f1806
LC		 374 unsigned cflows; /* Concurrent flows (config) */
375 unsigned lflow; /* Flow length (config) */
376 unsigned nflows; /* accumulated flows (stats) */
007a531b 377 unsigned curfl; /* current sequenced flow (state)*/
45b270f8
RO		 378
379 u16 queue_map_min;
380 u16 queue_map_max;
9e50e3ac 381 __u32 skb_priority; /* skb priority field */
e99b99b4 382 int node; /* Memory node */
45b270f8 383
a553e4a6
JHS		 384#ifdef CONFIG_XFRM
385 __u8 ipsmode; /* IPSEC mode (config) */
386 __u8 ipsproto; /* IPSEC type (config) */
387#endif
39df232f 388 char result[512];
1da177e4
LT		 389};
390
391struct pktgen_hdr {
252e3346
AV		 392 __be32 pgh_magic;
393 __be32 seq_num;
394 __be32 tv_sec;
395 __be32 tv_usec;
1da177e4
LT		 396};
397
398struct pktgen_thread {
63adc6fb 399 spinlock_t if_lock; /* for list of devices */
c26a8016 400 struct list_head if_list; /* All device here */
cdcdbe0b 401 struct list_head th_list;
ee74baa7 402 struct task_struct *tsk;
222f1806 403 char result[512];
222f1806 404
63adc6fb
SH		 405 /* Field for thread to receive "posted" events terminate,
406 stop ifs etc. */
222f1806
LC		 407
408 u32 control;
1da177e4
LT		 409 int cpu;
410
222f1806 411 wait_queue_head_t queue;
d3ede327 412 struct completion start_done;
1da177e4
LT		 413};
414
415#define REMOVE 1
416#define FIND 0
417
fd29cf72 418static inline ktime_t ktime_now(void)
1da177e4 419{
fd29cf72
SH		 420 struct timespec ts;
421 ktime_get_ts(&ts);
422
423 return timespec_to_ktime(ts);
1da177e4
LT		 424}
425
fd29cf72
SH		 426/* This works even if 32 bit because of careful byte order choice */
427static inline int ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
1da177e4 428{
fd29cf72 429 return cmp1.tv64 < cmp2.tv64;
1da177e4
LT		 430}
431
c3d2f52d 432static const char version[] =
f9467eae
JP		 433 "Packet Generator for packet performance testing. "
434 "Version: " VERSION "\n";
1da177e4 435
222f1806
LC		 436static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
437static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
438static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 439 const char *ifname, bool exact);
1da177e4
LT		 440static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
441static void pktgen_run_all_threads(void);
eb37b41c 442static void pktgen_reset_all_threads(void);
1da177e4 443static void pktgen_stop_all_threads_ifs(void);
3bda06a3 444
222f1806 445static void pktgen_stop(struct pktgen_thread *t);
1da177e4 446static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 447
222f1806
LC		 448static unsigned int scan_ip6(const char *s, char ip[16]);
449static unsigned int fmt_ip6(char *s, const char ip[16]);
1da177e4
LT		 450
451/* Module parameters, defaults. */
65c5b786
SH		 452static int pg_count_d __read_mostly = 1000;
453static int pg_delay_d __read_mostly;
454static int pg_clone_skb_d __read_mostly;
455static int debug __read_mostly;
1da177e4 456
222fa076 457static DEFINE_MUTEX(pktgen_thread_lock);
cdcdbe0b 458static LIST_HEAD(pktgen_threads);
1da177e4 459
1da177e4
LT		 460static struct notifier_block pktgen_notifier_block = {
461 .notifier_call = pktgen_device_event,
462};
463
1da177e4 464/*
4ec93edb 465 * /proc handling functions
1da177e4
LT		 466 *
467 */
468
d50a6b56 469static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 470{
c3d2f52d 471 seq_puts(seq, version);
d50a6b56 472 return 0;
1da177e4
LT		 473}
474
63adc6fb
SH		 475static ssize_t pgctrl_write(struct file *file, const char __user *buf,
476 size_t count, loff_t *ppos)
1da177e4 477{
1da177e4 478 int err = 0;
d50a6b56 479 char data[128];
1da177e4 480
222f1806
LC		 481 if (!capable(CAP_NET_ADMIN)) {
482 err = -EPERM;
1da177e4 483 goto out;
222f1806 484 }
1da177e4 485
d50a6b56
SH		 486 if (count > sizeof(data))
487 count = sizeof(data);
1da177e4 488
1da177e4 489 if (copy_from_user(data, buf, count)) {
b4099fab 490 err = -EFAULT;
d50a6b56 491 goto out;
222f1806
LC		 492 }
493 data[count - 1] = 0; /* Make string */
1da177e4 494
222f1806 495 if (!strcmp(data, "stop"))
1da177e4
LT		 496 pktgen_stop_all_threads_ifs();
497
222f1806 498 else if (!strcmp(data, "start"))
1da177e4
LT		 499 pktgen_run_all_threads();
500
eb37b41c
JB		 501 else if (!strcmp(data, "reset"))
502 pktgen_reset_all_threads();
503
222f1806 504 else
f9467eae 505 pr_warning("Unknown command: %s\n", data);
1da177e4
LT		 506
507 err = count;
508
222f1806
LC		 509out:
510 return err;
1da177e4
LT		 511}
512
d50a6b56
SH		 513static int pgctrl_open(struct inode *inode, struct file *file)
514{
515 return single_open(file, pgctrl_show, PDE(inode)->data);
516}
517
9a32144e 518static const struct file_operations pktgen_fops = {
222f1806
LC		 519 .owner = THIS_MODULE,
520 .open = pgctrl_open,
521 .read = seq_read,
522 .llseek = seq_lseek,
523 .write = pgctrl_write,
524 .release = single_release,
d50a6b56
SH		 525};
526
527static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 528{
648fda74 529 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 530 ktime_t stopped;
531 u64 idle;
222f1806
LC		 532
533 seq_printf(seq,
534 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
535 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
536 pkt_dev->max_pkt_size);
537
538 seq_printf(seq,
fd29cf72
SH		 539 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
540 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 541 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 542
543 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
544 pkt_dev->lflow);
545
45b270f8
RO		 546 seq_printf(seq,
547 " queue_map_min: %u queue_map_max: %u\n",
548 pkt_dev->queue_map_min,
549 pkt_dev->queue_map_max);
550
9e50e3ac
JF		 551 if (pkt_dev->skb_priority)
552 seq_printf(seq, " skb_priority: %u\n",
553 pkt_dev->skb_priority);
554
222f1806
LC		 555 if (pkt_dev->flags & F_IPV6) {
556 char b1[128], b2[128], b3[128];
557 fmt_ip6(b1, pkt_dev->in6_saddr.s6_addr);
558 fmt_ip6(b2, pkt_dev->min_in6_saddr.s6_addr);
559 fmt_ip6(b3, pkt_dev->max_in6_saddr.s6_addr);
560 seq_printf(seq,
561 " saddr: %s min_saddr: %s max_saddr: %s\n", b1,
562 b2, b3);
563
564 fmt_ip6(b1, pkt_dev->in6_daddr.s6_addr);
565 fmt_ip6(b2, pkt_dev->min_in6_daddr.s6_addr);
566 fmt_ip6(b3, pkt_dev->max_in6_daddr.s6_addr);
567 seq_printf(seq,
568 " daddr: %s min_daddr: %s max_daddr: %s\n", b1,
569 b2, b3);
570
63adc6fb
SH		 571 } else {
572 seq_printf(seq,
573 " dst_min: %s dst_max: %s\n",
574 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 575 seq_printf(seq,
63adc6fb
SH		 576 " src_min: %s src_max: %s\n",
577 pkt_dev->src_min, pkt_dev->src_max);
578 }
1da177e4 579
222f1806 580 seq_puts(seq, " src_mac: ");
1da177e4 581
e174961c
JB		 582 seq_printf(seq, "%pM ",
583 is_zero_ether_addr(pkt_dev->src_mac) ?
584 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806
LC		 585
586 seq_printf(seq, "dst_mac: ");
e174961c 587 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 588
589 seq_printf(seq,
63adc6fb
SH		 590 " udp_src_min: %d udp_src_max: %d"
591 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 592 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
593 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
594
595 seq_printf(seq,
ca6549af 596 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 597 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 598
ca6549af
SW		 599 if (pkt_dev->nr_labels) {
600 unsigned i;
601 seq_printf(seq, " mpls: ");
e71a4783 602 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 603 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
604 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
605 }
606
63adc6fb 607 if (pkt_dev->vlan_id != 0xffff)
34954ddc 608 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 609 pkt_dev->vlan_id, pkt_dev->vlan_p,
610 pkt_dev->vlan_cfi);
34954ddc 611
63adc6fb 612 if (pkt_dev->svlan_id != 0xffff)
34954ddc 613 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 614 pkt_dev->svlan_id, pkt_dev->svlan_p,
615 pkt_dev->svlan_cfi);
34954ddc 616
63adc6fb 617 if (pkt_dev->tos)
1ca7768c 618 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 619
63adc6fb 620 if (pkt_dev->traffic_class)
1ca7768c 621 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 622
e99b99b4
RO		 623 if (pkt_dev->node >= 0)
624 seq_printf(seq, " node: %d\n", pkt_dev->node);
625
ca6549af
SW		 626 seq_printf(seq, " Flags: ");
627
222f1806
LC		 628 if (pkt_dev->flags & F_IPV6)
629 seq_printf(seq, "IPV6 ");
1da177e4 630
222f1806
LC		 631 if (pkt_dev->flags & F_IPSRC_RND)
632 seq_printf(seq, "IPSRC_RND ");
1da177e4 633
222f1806
LC		 634 if (pkt_dev->flags & F_IPDST_RND)
635 seq_printf(seq, "IPDST_RND ");
1da177e4 636
222f1806
LC		 637 if (pkt_dev->flags & F_TXSIZE_RND)
638 seq_printf(seq, "TXSIZE_RND ");
1da177e4 639
222f1806
LC		 640 if (pkt_dev->flags & F_UDPSRC_RND)
641 seq_printf(seq, "UDPSRC_RND ");
1da177e4 642
222f1806
LC		 643 if (pkt_dev->flags & F_UDPDST_RND)
644 seq_printf(seq, "UDPDST_RND ");
1da177e4 645
ca6549af
SW		 646 if (pkt_dev->flags & F_MPLS_RND)
647 seq_printf(seq, "MPLS_RND ");
648
45b270f8
RO		 649 if (pkt_dev->flags & F_QUEUE_MAP_RND)
650 seq_printf(seq, "QUEUE_MAP_RND ");
651
e6fce5b9
RO		 652 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
653 seq_printf(seq, "QUEUE_MAP_CPU ");
654
007a531b
JHS		 655 if (pkt_dev->cflows) {
656 if (pkt_dev->flags & F_FLOW_SEQ)
657 seq_printf(seq, "FLOW_SEQ "); /*in sequence flows*/
658 else
659 seq_printf(seq, "FLOW_RND ");
660 }
661
a553e4a6
JHS		 662#ifdef CONFIG_XFRM
663 if (pkt_dev->flags & F_IPSEC_ON)
664 seq_printf(seq, "IPSEC ");
665#endif
666
222f1806
LC		 667 if (pkt_dev->flags & F_MACSRC_RND)
668 seq_printf(seq, "MACSRC_RND ");
1da177e4 669
222f1806
LC		 670 if (pkt_dev->flags & F_MACDST_RND)
671 seq_printf(seq, "MACDST_RND ");
1da177e4 672
34954ddc
FF		 673 if (pkt_dev->flags & F_VID_RND)
674 seq_printf(seq, "VID_RND ");
675
676 if (pkt_dev->flags & F_SVID_RND)
677 seq_printf(seq, "SVID_RND ");
678
e99b99b4
RO		 679 if (pkt_dev->flags & F_NODE)
680 seq_printf(seq, "NODE_ALLOC ");
681
222f1806
LC		 682 seq_puts(seq, "\n");
683
fd29cf72
SH		 684 /* not really stopped, more like last-running-at */
685 stopped = pkt_dev->running ? ktime_now() : pkt_dev->stopped_at;
686 idle = pkt_dev->idle_acc;
687 do_div(idle, NSEC_PER_USEC);
1da177e4 688
222f1806 689 seq_printf(seq,
fd29cf72 690 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 691 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 692 (unsigned long long)pkt_dev->errors);
693
694 seq_printf(seq,
695 " started: %lluus stopped: %lluus idle: %lluus\n",
696 (unsigned long long) ktime_to_us(pkt_dev->started_at),
697 (unsigned long long) ktime_to_us(stopped),
698 (unsigned long long) idle);
1da177e4 699
222f1806
LC		 700 seq_printf(seq,
701 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 702 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
703 pkt_dev->cur_src_mac_offset);
1da177e4 704
222f1806 705 if (pkt_dev->flags & F_IPV6) {
1da177e4 706 char b1[128], b2[128];
222f1806
LC		 707 fmt_ip6(b1, pkt_dev->cur_in6_daddr.s6_addr);
708 fmt_ip6(b2, pkt_dev->cur_in6_saddr.s6_addr);
709 seq_printf(seq, " cur_saddr: %s cur_daddr: %s\n", b2, b1);
710 } else
711 seq_printf(seq, " cur_saddr: 0x%x cur_daddr: 0x%x\n",
d50a6b56 712 pkt_dev->cur_saddr, pkt_dev->cur_daddr);
1da177e4 713
222f1806 714 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 715 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 716
45b270f8
RO		 717 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
718
222f1806 719 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 720
721 if (pkt_dev->result[0])
222f1806 722 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 723 else
222f1806 724 seq_printf(seq, "Result: Idle\n");
1da177e4 725
d50a6b56 726 return 0;
1da177e4
LT		 727}
728
ca6549af 729
63adc6fb
SH		 730static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
731 __u32 *num)
ca6549af
SW		 732{
733 int i = 0;
734 *num = 0;
735
e71a4783 736 for (; i < maxlen; i++) {
82fd5b5d 737 int value;
ca6549af
SW		 738 char c;
739 *num <<= 4;
740 if (get_user(c, &user_buffer[i]))
741 return -EFAULT;
82fd5b5d
AS		 742 value = hex_to_bin(c);
743 if (value >= 0)
744 *num |= value;
ca6549af
SW		 745 else
746 break;
747 }
748 return i;
749}
750
222f1806
LC		 751static int count_trail_chars(const char __user * user_buffer,
752 unsigned int maxlen)
1da177e4
LT		 753{
754 int i;
755
756 for (i = 0; i < maxlen; i++) {
222f1806
LC		 757 char c;
758 if (get_user(c, &user_buffer[i]))
759 return -EFAULT;
760 switch (c) {
1da177e4
LT		 761 case '\"':
762 case '\n':
763 case '\r':
764 case '\t':
765 case ' ':
766 case '=':
767 break;
768 default:
769 goto done;
3ff50b79 770 }
1da177e4
LT		 771 }
772done:
773 return i;
774}
775
222f1806
LC		 776static unsigned long num_arg(const char __user * user_buffer,
777 unsigned long maxlen, unsigned long *num)
1da177e4 778{
d6182223 779 int i;
1da177e4 780 *num = 0;
222f1806 781
d6182223 782 for (i = 0; i < maxlen; i++) {
222f1806
LC		 783 char c;
784 if (get_user(c, &user_buffer[i]))
785 return -EFAULT;
786 if ((c >= '0') && (c <= '9')) {
1da177e4 787 *num *= 10;
222f1806 788 *num += c - '0';
1da177e4
LT		 789 } else
790 break;
791 }
792 return i;
793}
794
222f1806 795static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 796{
d6182223 797 int i;
1da177e4 798
d6182223 799 for (i = 0; i < maxlen; i++) {
222f1806
LC		 800 char c;
801 if (get_user(c, &user_buffer[i]))
802 return -EFAULT;
803 switch (c) {
1da177e4
LT		 804 case '\"':
805 case '\n':
806 case '\r':
807 case '\t':
808 case ' ':
809 goto done_str;
810 break;
811 default:
812 break;
3ff50b79 813 }
1da177e4
LT		 814 }
815done_str:
1da177e4
LT		 816 return i;
817}
818
ca6549af
SW		 819static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
820{
821 unsigned n = 0;
822 char c;
823 ssize_t i = 0;
824 int len;
825
826 pkt_dev->nr_labels = 0;
827 do {
828 __u32 tmp;
1ca7768c 829 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 830 if (len <= 0)
831 return len;
832 pkt_dev->labels[n] = htonl(tmp);
833 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
834 pkt_dev->flags |= F_MPLS_RND;
835 i += len;
836 if (get_user(c, &buffer[i]))
837 return -EFAULT;
838 i++;
839 n++;
840 if (n >= MAX_MPLS_LABELS)
841 return -E2BIG;
e71a4783 842 } while (c == ',');
ca6549af
SW		 843
844 pkt_dev->nr_labels = n;
845 return i;
846}
847
222f1806
LC		 848static ssize_t pktgen_if_write(struct file *file,
849 const char __user * user_buffer, size_t count,
850 loff_t * offset)
1da177e4 851{
8a994a71 852 struct seq_file *seq = file->private_data;
222f1806 853 struct pktgen_dev *pkt_dev = seq->private;
d6182223 854 int i, max, len;
1da177e4
LT		 855 char name[16], valstr[32];
856 unsigned long value = 0;
222f1806
LC		 857 char *pg_result = NULL;
858 int tmp = 0;
1da177e4 859 char buf[128];
222f1806
LC		 860
861 pg_result = &(pkt_dev->result[0]);
862
1da177e4 863 if (count < 1) {
f9467eae 864 pr_warning("wrong command format\n");
1da177e4
LT		 865 return -EINVAL;
866 }
222f1806 867
d6182223
PG		 868 max = count;
869 tmp = count_trail_chars(user_buffer, max);
222f1806 870 if (tmp < 0) {
f9467eae 871 pr_warning("illegal format\n");
222f1806 872 return tmp;
1da177e4 873 }
d6182223 874 i = tmp;
222f1806 875
1da177e4
LT		 876 /* Read variable name */
877
878 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 879 if (len < 0)
222f1806 880 return len;
63adc6fb 881
1da177e4 882 memset(name, 0, sizeof(name));
222f1806 883 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 884 return -EFAULT;
885 i += len;
222f1806
LC		 886
887 max = count - i;
1da177e4 888 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 889 if (len < 0)
890 return len;
891
1da177e4
LT		 892 i += len;
893
894 if (debug) {
86c2c0a8 895 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 896 char tb[copy + 1];
897 if (copy_from_user(tb, user_buffer, copy))
1da177e4 898 return -EFAULT;
448d7b5d 899 tb[copy] = 0;
25a8b254 900 printk(KERN_DEBUG "pktgen: %s,%lu buffer -:%s:-\n", name,
222f1806
LC		 901 (unsigned long)count, tb);
902 }
1da177e4
LT		 903
904 if (!strcmp(name, "min_pkt_size")) {
905 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 906 if (len < 0)
222f1806 907 return len;
63adc6fb 908
1da177e4 909 i += len;
222f1806
LC		 910 if (value < 14 + 20 + 8)
911 value = 14 + 20 + 8;
912 if (value != pkt_dev->min_pkt_size) {
913 pkt_dev->min_pkt_size = value;
914 pkt_dev->cur_pkt_size = value;
915 }
916 sprintf(pg_result, "OK: min_pkt_size=%u",
917 pkt_dev->min_pkt_size);
1da177e4
LT		 918 return count;
919 }
920
222f1806 921 if (!strcmp(name, "max_pkt_size")) {
1da177e4 922 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 923 if (len < 0)
222f1806 924 return len;
63adc6fb 925
1da177e4 926 i += len;
222f1806
LC		 927 if (value < 14 + 20 + 8)
928 value = 14 + 20 + 8;
929 if (value != pkt_dev->max_pkt_size) {
930 pkt_dev->max_pkt_size = value;
931 pkt_dev->cur_pkt_size = value;
932 }
933 sprintf(pg_result, "OK: max_pkt_size=%u",
934 pkt_dev->max_pkt_size);
1da177e4
LT		 935 return count;
936 }
937
222f1806 938 /* Shortcut for min = max */
1da177e4
LT		 939
940 if (!strcmp(name, "pkt_size")) {
941 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 942 if (len < 0)
222f1806 943 return len;
63adc6fb 944
1da177e4 945 i += len;
222f1806
LC		 946 if (value < 14 + 20 + 8)
947 value = 14 + 20 + 8;
948 if (value != pkt_dev->min_pkt_size) {
949 pkt_dev->min_pkt_size = value;
950 pkt_dev->max_pkt_size = value;
951 pkt_dev->cur_pkt_size = value;
952 }
1da177e4
LT		 953 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
954 return count;
955 }
956
222f1806 957 if (!strcmp(name, "debug")) {
1da177e4 958 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 959 if (len < 0)
222f1806 960 return len;
63adc6fb 961
1da177e4 962 i += len;
222f1806 963 debug = value;
1da177e4
LT		 964 sprintf(pg_result, "OK: debug=%u", debug);
965 return count;
966 }
967
222f1806 968 if (!strcmp(name, "frags")) {
1da177e4 969 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 970 if (len < 0)
222f1806 971 return len;
63adc6fb 972
1da177e4
LT		 973 i += len;
974 pkt_dev->nfrags = value;
975 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
976 return count;
977 }
978 if (!strcmp(name, "delay")) {
979 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 980 if (len < 0)
222f1806 981 return len;
63adc6fb 982
1da177e4 983 i += len;
fd29cf72
SH		 984 if (value == 0x7FFFFFFF)
985 pkt_dev->delay = ULLONG_MAX;
986 else
9240d715 987 pkt_dev->delay = (u64)value;
fd29cf72
SH		 988
989 sprintf(pg_result, "OK: delay=%llu",
990 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 991 return count;
992 }
43d28b65
DT		 993 if (!strcmp(name, "rate")) {
994 len = num_arg(&user_buffer[i], 10, &value);
995 if (len < 0)
996 return len;
997
998 i += len;
999 if (!value)
1000 return len;
1001 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
1002 if (debug)
f9467eae 1003 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1004
1005 sprintf(pg_result, "OK: rate=%lu", value);
1006 return count;
1007 }
1008 if (!strcmp(name, "ratep")) {
1009 len = num_arg(&user_buffer[i], 10, &value);
1010 if (len < 0)
1011 return len;
1012
1013 i += len;
1014 if (!value)
1015 return len;
1016 pkt_dev->delay = NSEC_PER_SEC/value;
1017 if (debug)
f9467eae 1018 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1019
1020 sprintf(pg_result, "OK: rate=%lu", value);
1021 return count;
1022 }
222f1806 1023 if (!strcmp(name, "udp_src_min")) {
1da177e4 1024 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1025 if (len < 0)
222f1806 1026 return len;
63adc6fb 1027
1da177e4 1028 i += len;
222f1806
LC		 1029 if (value != pkt_dev->udp_src_min) {
1030 pkt_dev->udp_src_min = value;
1031 pkt_dev->cur_udp_src = value;
1032 }
1da177e4
LT		 1033 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1034 return count;
1035 }
222f1806 1036 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1037 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1038 if (len < 0)
222f1806 1039 return len;
63adc6fb 1040
1da177e4 1041 i += len;
222f1806
LC		 1042 if (value != pkt_dev->udp_dst_min) {
1043 pkt_dev->udp_dst_min = value;
1044 pkt_dev->cur_udp_dst = value;
1045 }
1da177e4
LT		 1046 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1047 return count;
1048 }
222f1806 1049 if (!strcmp(name, "udp_src_max")) {
1da177e4 1050 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1051 if (len < 0)
222f1806 1052 return len;
63adc6fb 1053
1da177e4 1054 i += len;
222f1806
LC		 1055 if (value != pkt_dev->udp_src_max) {
1056 pkt_dev->udp_src_max = value;
1057 pkt_dev->cur_udp_src = value;
1058 }
1da177e4
LT		 1059 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1060 return count;
1061 }
222f1806 1062 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1063 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1064 if (len < 0)
222f1806 1065 return len;
63adc6fb 1066
1da177e4 1067 i += len;
222f1806
LC		 1068 if (value != pkt_dev->udp_dst_max) {
1069 pkt_dev->udp_dst_max = value;
1070 pkt_dev->cur_udp_dst = value;
1071 }
1da177e4
LT		 1072 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1073 return count;
1074 }
1075 if (!strcmp(name, "clone_skb")) {
1076 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1077 if (len < 0)
222f1806 1078 return len;
63adc6fb 1079
1da177e4 1080 i += len;
222f1806
LC		 1081 pkt_dev->clone_skb = value;
1082
1da177e4
LT		 1083 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1084 return count;
1085 }
1086 if (!strcmp(name, "count")) {
1087 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1088 if (len < 0)
222f1806 1089 return len;
63adc6fb 1090
1da177e4
LT		 1091 i += len;
1092 pkt_dev->count = value;
1093 sprintf(pg_result, "OK: count=%llu",
222f1806 1094 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1095 return count;
1096 }
1097 if (!strcmp(name, "src_mac_count")) {
1098 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1099 if (len < 0)
222f1806 1100 return len;
63adc6fb 1101
1da177e4
LT		 1102 i += len;
1103 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1104 pkt_dev->src_mac_count = value;
1105 pkt_dev->cur_src_mac_offset = 0;
1106 }
1107 sprintf(pg_result, "OK: src_mac_count=%d",
1108 pkt_dev->src_mac_count);
1da177e4
LT		 1109 return count;
1110 }
1111 if (!strcmp(name, "dst_mac_count")) {
1112 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1113 if (len < 0)
222f1806 1114 return len;
63adc6fb 1115
1da177e4
LT		 1116 i += len;
1117 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1118 pkt_dev->dst_mac_count = value;
1119 pkt_dev->cur_dst_mac_offset = 0;
1120 }
1121 sprintf(pg_result, "OK: dst_mac_count=%d",
1122 pkt_dev->dst_mac_count);
1da177e4
LT		 1123 return count;
1124 }
e99b99b4
RO		 1125 if (!strcmp(name, "node")) {
1126 len = num_arg(&user_buffer[i], 10, &value);
1127 if (len < 0)
1128 return len;
1129
1130 i += len;
1131
1132 if (node_possible(value)) {
1133 pkt_dev->node = value;
1134 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
1135 }
1136 else
1137 sprintf(pg_result, "ERROR: node not possible");
1138 return count;
1139 }
1da177e4 1140 if (!strcmp(name, "flag")) {
222f1806
LC		 1141 char f[32];
1142 memset(f, 0, 32);
1da177e4 1143 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1144 if (len < 0)
222f1806 1145 return len;
63adc6fb 1146
1da177e4
LT		 1147 if (copy_from_user(f, &user_buffer[i], len))
1148 return -EFAULT;
1149 i += len;
222f1806
LC		 1150 if (strcmp(f, "IPSRC_RND") == 0)
1151 pkt_dev->flags |= F_IPSRC_RND;
1152
1153 else if (strcmp(f, "!IPSRC_RND") == 0)
1154 pkt_dev->flags &= ~F_IPSRC_RND;
1155
1156 else if (strcmp(f, "TXSIZE_RND") == 0)
1157 pkt_dev->flags |= F_TXSIZE_RND;
1158
1159 else if (strcmp(f, "!TXSIZE_RND") == 0)
1160 pkt_dev->flags &= ~F_TXSIZE_RND;
1161
1162 else if (strcmp(f, "IPDST_RND") == 0)
1163 pkt_dev->flags |= F_IPDST_RND;
1164
1165 else if (strcmp(f, "!IPDST_RND") == 0)
1166 pkt_dev->flags &= ~F_IPDST_RND;
1167
1168 else if (strcmp(f, "UDPSRC_RND") == 0)
1169 pkt_dev->flags |= F_UDPSRC_RND;
1170
1171 else if (strcmp(f, "!UDPSRC_RND") == 0)
1172 pkt_dev->flags &= ~F_UDPSRC_RND;
1173
1174 else if (strcmp(f, "UDPDST_RND") == 0)
1175 pkt_dev->flags |= F_UDPDST_RND;
1176
1177 else if (strcmp(f, "!UDPDST_RND") == 0)
1178 pkt_dev->flags &= ~F_UDPDST_RND;
1179
1180 else if (strcmp(f, "MACSRC_RND") == 0)
1181 pkt_dev->flags |= F_MACSRC_RND;
1182
1183 else if (strcmp(f, "!MACSRC_RND") == 0)
1184 pkt_dev->flags &= ~F_MACSRC_RND;
1185
1186 else if (strcmp(f, "MACDST_RND") == 0)
1187 pkt_dev->flags |= F_MACDST_RND;
1188
1189 else if (strcmp(f, "!MACDST_RND") == 0)
1190 pkt_dev->flags &= ~F_MACDST_RND;
1191
ca6549af
SW		 1192 else if (strcmp(f, "MPLS_RND") == 0)
1193 pkt_dev->flags |= F_MPLS_RND;
1194
1195 else if (strcmp(f, "!MPLS_RND") == 0)
1196 pkt_dev->flags &= ~F_MPLS_RND;
1197
34954ddc
FF		 1198 else if (strcmp(f, "VID_RND") == 0)
1199 pkt_dev->flags |= F_VID_RND;
1200
1201 else if (strcmp(f, "!VID_RND") == 0)
1202 pkt_dev->flags &= ~F_VID_RND;
1203
1204 else if (strcmp(f, "SVID_RND") == 0)
1205 pkt_dev->flags |= F_SVID_RND;
1206
1207 else if (strcmp(f, "!SVID_RND") == 0)
1208 pkt_dev->flags &= ~F_SVID_RND;
1209
007a531b
JHS		 1210 else if (strcmp(f, "FLOW_SEQ") == 0)
1211 pkt_dev->flags |= F_FLOW_SEQ;
1212
45b270f8
RO		 1213 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1214 pkt_dev->flags |= F_QUEUE_MAP_RND;
1215
1216 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1217 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1218
1219 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1220 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1221
1222 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1223 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1224#ifdef CONFIG_XFRM
1225 else if (strcmp(f, "IPSEC") == 0)
1226 pkt_dev->flags |= F_IPSEC_ON;
1227#endif
1228
1ca7768c
FF		 1229 else if (strcmp(f, "!IPV6") == 0)
1230 pkt_dev->flags &= ~F_IPV6;
1231
e99b99b4
RO		 1232 else if (strcmp(f, "NODE_ALLOC") == 0)
1233 pkt_dev->flags |= F_NODE;
1234
1235 else if (strcmp(f, "!NODE_ALLOC") == 0)
1236 pkt_dev->flags &= ~F_NODE;
1237
222f1806
LC		 1238 else {
1239 sprintf(pg_result,
1240 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1241 f,
1ca7768c 1242 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
e99b99b4 1243 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, IPSEC, NODE_ALLOC\n");
222f1806
LC		 1244 return count;
1245 }
1da177e4
LT		 1246 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1247 return count;
1248 }
1249 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1250 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1251 if (len < 0)
222f1806 1252 return len;
1da177e4 1253
222f1806 1254 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1255 return -EFAULT;
222f1806
LC		 1256 buf[len] = 0;
1257 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1258 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1259 strncpy(pkt_dev->dst_min, buf, len);
1260 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1261 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1262 }
1263 if (debug)
25a8b254 1264 printk(KERN_DEBUG "pktgen: dst_min set to: %s\n",
222f1806
LC		 1265 pkt_dev->dst_min);
1266 i += len;
1da177e4
LT		 1267 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1268 return count;
1269 }
1270 if (!strcmp(name, "dst_max")) {
1271 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1272 if (len < 0)
222f1806 1273 return len;
63adc6fb 1274
1da177e4 1275
222f1806 1276 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1277 return -EFAULT;
1278
222f1806
LC		 1279 buf[len] = 0;
1280 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1281 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1282 strncpy(pkt_dev->dst_max, buf, len);
1283 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1284 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1285 }
1286 if (debug)
25a8b254 1287 printk(KERN_DEBUG "pktgen: dst_max set to: %s\n",
222f1806 1288 pkt_dev->dst_max);
1da177e4
LT		 1289 i += len;
1290 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1291 return count;
1292 }
1293 if (!strcmp(name, "dst6")) {
1294 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1295 if (len < 0)
1296 return len;
1da177e4
LT		 1297
1298 pkt_dev->flags |= F_IPV6;
1299
222f1806 1300 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1301 return -EFAULT;
222f1806 1302 buf[len] = 0;
1da177e4
LT		 1303
1304 scan_ip6(buf, pkt_dev->in6_daddr.s6_addr);
222f1806 1305 fmt_ip6(buf, pkt_dev->in6_daddr.s6_addr);
1da177e4
LT		 1306
1307 ipv6_addr_copy(&pkt_dev->cur_in6_daddr, &pkt_dev->in6_daddr);
1308
222f1806 1309 if (debug)
25a8b254 1310 printk(KERN_DEBUG "pktgen: dst6 set to: %s\n", buf);
1da177e4 1311
222f1806 1312 i += len;
1da177e4
LT		 1313 sprintf(pg_result, "OK: dst6=%s", buf);
1314 return count;
1315 }
1316 if (!strcmp(name, "dst6_min")) {
1317 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1318 if (len < 0)
1319 return len;
1da177e4
LT		 1320
1321 pkt_dev->flags |= F_IPV6;
1322
222f1806 1323 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1324 return -EFAULT;
222f1806 1325 buf[len] = 0;
1da177e4
LT		 1326
1327 scan_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
222f1806 1328 fmt_ip6(buf, pkt_dev->min_in6_daddr.s6_addr);
1da177e4 1329
222f1806
LC		 1330 ipv6_addr_copy(&pkt_dev->cur_in6_daddr,
1331 &pkt_dev->min_in6_daddr);
1332 if (debug)
25a8b254 1333 printk(KERN_DEBUG "pktgen: dst6_min set to: %s\n", buf);
1da177e4 1334
222f1806 1335 i += len;
1da177e4
LT		 1336 sprintf(pg_result, "OK: dst6_min=%s", buf);
1337 return count;
1338 }
1339 if (!strcmp(name, "dst6_max")) {
1340 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1341 if (len < 0)
1342 return len;
1da177e4
LT		 1343
1344 pkt_dev->flags |= F_IPV6;
1345
222f1806 1346 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1347 return -EFAULT;
222f1806 1348 buf[len] = 0;
1da177e4
LT		 1349
1350 scan_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
222f1806 1351 fmt_ip6(buf, pkt_dev->max_in6_daddr.s6_addr);
1da177e4 1352
222f1806 1353 if (debug)
25a8b254 1354 printk(KERN_DEBUG "pktgen: dst6_max set to: %s\n", buf);
1da177e4 1355
222f1806 1356 i += len;
1da177e4
LT		 1357 sprintf(pg_result, "OK: dst6_max=%s", buf);
1358 return count;
1359 }
1360 if (!strcmp(name, "src6")) {
1361 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1362 if (len < 0)
1363 return len;
1da177e4
LT		 1364
1365 pkt_dev->flags |= F_IPV6;
1366
222f1806 1367 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1368 return -EFAULT;
222f1806 1369 buf[len] = 0;
1da177e4
LT		 1370
1371 scan_ip6(buf, pkt_dev->in6_saddr.s6_addr);
222f1806 1372 fmt_ip6(buf, pkt_dev->in6_saddr.s6_addr);
1da177e4
LT		 1373
1374 ipv6_addr_copy(&pkt_dev->cur_in6_saddr, &pkt_dev->in6_saddr);
1375
222f1806 1376 if (debug)
25a8b254 1377 printk(KERN_DEBUG "pktgen: src6 set to: %s\n", buf);
222f1806
LC		 1378
1379 i += len;
1da177e4
LT		 1380 sprintf(pg_result, "OK: src6=%s", buf);
1381 return count;
1382 }
1383 if (!strcmp(name, "src_min")) {
1384 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1385 if (len < 0)
222f1806 1386 return len;
63adc6fb 1387
222f1806 1388 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1389 return -EFAULT;
222f1806
LC		 1390 buf[len] = 0;
1391 if (strcmp(buf, pkt_dev->src_min) != 0) {
1392 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1393 strncpy(pkt_dev->src_min, buf, len);
1394 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1395 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1396 }
1397 if (debug)
25a8b254 1398 printk(KERN_DEBUG "pktgen: src_min set to: %s\n",
222f1806 1399 pkt_dev->src_min);
1da177e4
LT		 1400 i += len;
1401 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1402 return count;
1403 }
1404 if (!strcmp(name, "src_max")) {
1405 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1406 if (len < 0)
222f1806 1407 return len;
63adc6fb 1408
222f1806 1409 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1410 return -EFAULT;
222f1806
LC		 1411 buf[len] = 0;
1412 if (strcmp(buf, pkt_dev->src_max) != 0) {
1413 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1414 strncpy(pkt_dev->src_max, buf, len);
1415 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1416 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1417 }
1418 if (debug)
25a8b254 1419 printk(KERN_DEBUG "pktgen: src_max set to: %s\n",
222f1806 1420 pkt_dev->src_max);
1da177e4
LT		 1421 i += len;
1422 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1423 return count;
1424 }
1425 if (!strcmp(name, "dst_mac")) {
1426 char *v = valstr;
f404e9a6 1427 unsigned char old_dmac[ETH_ALEN];
1da177e4 1428 unsigned char *m = pkt_dev->dst_mac;
f404e9a6 1429 memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
222f1806 1430
1da177e4 1431 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1432 if (len < 0)
222f1806 1433 return len;
63adc6fb 1434
1da177e4 1435 memset(valstr, 0, sizeof(valstr));
222f1806 1436 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4
LT		 1437 return -EFAULT;
1438 i += len;
1439
222f1806 1440 for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
451e07a2
AS		 1441 int value;
1442
1443 value = hex_to_bin(*v);
1444 if (value >= 0)
1445 *m = *m * 16 + value;
1446
1da177e4
LT		 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++) {
451e07a2
AS		 1477 int value;
1478
1479 value = hex_to_bin(*v);
1480 if (value >= 0)
1481 *m = *m * 16 + value;
1482
1da177e4
LT		 1483 if (*v == ':') {
1484 m++;
1485 *m = 0;
1486 }
222f1806 1487 }
1da177e4 1488
ce5d0b47
AR		 1489 /* Set up Src MAC */
1490 if (compare_ether_addr(old_smac, pkt_dev->src_mac))
1491 memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
1492
222f1806 1493 sprintf(pg_result, "OK: srcmac");
1da177e4
LT		 1494 return count;
1495 }
1496
222f1806
LC		 1497 if (!strcmp(name, "clear_counters")) {
1498 pktgen_clear_counters(pkt_dev);
1499 sprintf(pg_result, "OK: Clearing counters.\n");
1500 return count;
1501 }
1da177e4
LT		 1502
1503 if (!strcmp(name, "flows")) {
1504 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1505 if (len < 0)
222f1806 1506 return len;
63adc6fb 1507
1da177e4
LT		 1508 i += len;
1509 if (value > MAX_CFLOWS)
1510 value = MAX_CFLOWS;
1511
1512 pkt_dev->cflows = value;
1513 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1514 return count;
1515 }
1516
1517 if (!strcmp(name, "flowlen")) {
1518 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1519 if (len < 0)
222f1806 1520 return len;
63adc6fb 1521
1da177e4
LT		 1522 i += len;
1523 pkt_dev->lflow = value;
1524 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1525 return count;
1526 }
222f1806 1527
45b270f8
RO		 1528 if (!strcmp(name, "queue_map_min")) {
1529 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1530 if (len < 0)
45b270f8 1531 return len;
63adc6fb 1532
45b270f8
RO		 1533 i += len;
1534 pkt_dev->queue_map_min = value;
1535 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1536 return count;
1537 }
1538
1539 if (!strcmp(name, "queue_map_max")) {
1540 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1541 if (len < 0)
45b270f8 1542 return len;
63adc6fb 1543
45b270f8
RO		 1544 i += len;
1545 pkt_dev->queue_map_max = value;
1546 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1547 return count;
1548 }
1549
ca6549af 1550 if (!strcmp(name, "mpls")) {
cfcabdcc
SH		 1551 unsigned n, cnt;
1552
ca6549af 1553 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1554 if (len < 0)
1555 return len;
ca6549af 1556 i += len;
cfcabdcc 1557 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1558 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1559 cnt += sprintf(pg_result + cnt,
1560 "%08x%s", ntohl(pkt_dev->labels[n]),
1561 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1562
1563 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1564 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1565 pkt_dev->svlan_id = 0xffff;
1566
1567 if (debug)
25a8b254 1568 printk(KERN_DEBUG "pktgen: VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1569 }
1570 return count;
1571 }
1572
1573 if (!strcmp(name, "vlan_id")) {
1574 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1575 if (len < 0)
34954ddc 1576 return len;
63adc6fb 1577
34954ddc
FF		 1578 i += len;
1579 if (value <= 4095) {
1580 pkt_dev->vlan_id = value; /* turn on VLAN */
1581
1582 if (debug)
25a8b254 1583 printk(KERN_DEBUG "pktgen: VLAN turned on\n");
34954ddc
FF		 1584
1585 if (debug && pkt_dev->nr_labels)
25a8b254 1586 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1587
1588 pkt_dev->nr_labels = 0; /* turn off MPLS */
1589 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1590 } else {
1591 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1592 pkt_dev->svlan_id = 0xffff;
1593
1594 if (debug)
25a8b254 1595 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1596 }
1597 return count;
1598 }
1599
1600 if (!strcmp(name, "vlan_p")) {
1601 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1602 if (len < 0)
34954ddc 1603 return len;
63adc6fb 1604
34954ddc
FF		 1605 i += len;
1606 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1607 pkt_dev->vlan_p = value;
1608 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1609 } else {
1610 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1611 }
1612 return count;
1613 }
1614
1615 if (!strcmp(name, "vlan_cfi")) {
1616 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1617 if (len < 0)
34954ddc 1618 return len;
63adc6fb 1619
34954ddc
FF		 1620 i += len;
1621 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1622 pkt_dev->vlan_cfi = value;
1623 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1624 } else {
1625 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1626 }
1627 return count;
1628 }
1629
1630 if (!strcmp(name, "svlan_id")) {
1631 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1632 if (len < 0)
34954ddc 1633 return len;
63adc6fb 1634
34954ddc
FF		 1635 i += len;
1636 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1637 pkt_dev->svlan_id = value; /* turn on SVLAN */
1638
1639 if (debug)
25a8b254 1640 printk(KERN_DEBUG "pktgen: SVLAN turned on\n");
34954ddc
FF		 1641
1642 if (debug && pkt_dev->nr_labels)
25a8b254 1643 printk(KERN_DEBUG "pktgen: MPLS auto turned off\n");
34954ddc
FF		 1644
1645 pkt_dev->nr_labels = 0; /* turn off MPLS */
1646 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1647 } else {
1648 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1649 pkt_dev->svlan_id = 0xffff;
1650
1651 if (debug)
25a8b254 1652 printk(KERN_DEBUG "pktgen: VLAN/SVLAN turned off\n");
34954ddc
FF		 1653 }
1654 return count;
1655 }
1656
1657 if (!strcmp(name, "svlan_p")) {
1658 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1659 if (len < 0)
34954ddc 1660 return len;
63adc6fb 1661
34954ddc
FF		 1662 i += len;
1663 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1664 pkt_dev->svlan_p = value;
1665 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1666 } else {
1667 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1668 }
1669 return count;
1670 }
1671
1672 if (!strcmp(name, "svlan_cfi")) {
1673 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1674 if (len < 0)
34954ddc 1675 return len;
63adc6fb 1676
34954ddc
FF		 1677 i += len;
1678 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1679 pkt_dev->svlan_cfi = value;
1680 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1681 } else {
1682 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1683 }
ca6549af
SW		 1684 return count;
1685 }
1686
1ca7768c
FF		 1687 if (!strcmp(name, "tos")) {
1688 __u32 tmp_value = 0;
1689 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1690 if (len < 0)
1ca7768c 1691 return len;
63adc6fb 1692
1ca7768c
FF		 1693 i += len;
1694 if (len == 2) {
1695 pkt_dev->tos = tmp_value;
1696 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1697 } else {
1698 sprintf(pg_result, "ERROR: tos must be 00-ff");
1699 }
1700 return count;
1701 }
1702
1703 if (!strcmp(name, "traffic_class")) {
1704 __u32 tmp_value = 0;
1705 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1706 if (len < 0)
1ca7768c 1707 return len;
63adc6fb 1708
1ca7768c
FF		 1709 i += len;
1710 if (len == 2) {
1711 pkt_dev->traffic_class = tmp_value;
1712 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1713 } else {
1714 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1715 }
1716 return count;
1717 }
1718
9e50e3ac
JF		 1719 if (!strcmp(name, "skb_priority")) {
1720 len = num_arg(&user_buffer[i], 9, &value);
1721 if (len < 0)
1722 return len;
1723
1724 i += len;
1725 pkt_dev->skb_priority = value;
1726 sprintf(pg_result, "OK: skb_priority=%i",
1727 pkt_dev->skb_priority);
1728 return count;
1729 }
1730
1da177e4
LT		 1731 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1732 return -EINVAL;
1733}
1734
d50a6b56 1735static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1736{
d50a6b56
SH		 1737 return single_open(file, pktgen_if_show, PDE(inode)->data);
1738}
1da177e4 1739
9a32144e 1740static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1741 .owner = THIS_MODULE,
1742 .open = pktgen_if_open,
1743 .read = seq_read,
1744 .llseek = seq_lseek,
1745 .write = pktgen_if_write,
1746 .release = single_release,
d50a6b56 1747};
1da177e4 1748
d50a6b56
SH		 1749static int pktgen_thread_show(struct seq_file *seq, void *v)
1750{
222f1806 1751 struct pktgen_thread *t = seq->private;
648fda74 1752 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1753
1754 BUG_ON(!t);
1da177e4 1755
222f1806 1756 seq_printf(seq, "Running: ");
1da177e4 1757
222f1806 1758 if_lock(t);
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 1762
222f1806
LC		 1763 seq_printf(seq, "\nStopped: ");
1764
c26a8016 1765 list_for_each_entry(pkt_dev, &t->if_list, list)
222f1806 1766 if (!pkt_dev->running)
593f63b0 1767 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1768
1769 if (t->result[0])
d50a6b56 1770 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1771 else
d50a6b56 1772 seq_printf(seq, "\nResult: NA\n");
1da177e4 1773
222f1806 1774 if_unlock(t);
1da177e4 1775
d50a6b56 1776 return 0;
1da177e4
LT		 1777}
1778
d50a6b56 1779static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1780 const char __user * user_buffer,
1781 size_t count, loff_t * offset)
1da177e4 1782{
8a994a71 1783 struct seq_file *seq = file->private_data;
222f1806 1784 struct pktgen_thread *t = seq->private;
d6182223 1785 int i, max, len, ret;
1da177e4 1786 char name[40];
222f1806 1787 char *pg_result;
d50a6b56 1788
1da177e4 1789 if (count < 1) {
222f1806 1790 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1791 return -EINVAL;
1792 }
d50a6b56 1793
d6182223
PG		 1794 max = count;
1795 len = count_trail_chars(user_buffer, max);
222f1806 1796 if (len < 0)
d50a6b56
SH		 1797 return len;
1798
d6182223 1799 i = len;
d50a6b56 1800
1da177e4
LT		 1801 /* Read variable name */
1802
1803 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1804 if (len < 0)
d50a6b56 1805 return len;
222f1806 1806
1da177e4
LT		 1807 memset(name, 0, sizeof(name));
1808 if (copy_from_user(name, &user_buffer[i], len))
1809 return -EFAULT;
1810 i += len;
d50a6b56 1811
222f1806 1812 max = count - i;
1da177e4 1813 len = count_trail_chars(&user_buffer[i], max);
222f1806 1814 if (len < 0)
d50a6b56
SH		 1815 return len;
1816
1da177e4
LT		 1817 i += len;
1818
d50a6b56 1819 if (debug)
25a8b254
DM		 1820 printk(KERN_DEBUG "pktgen: t=%s, count=%lu\n",
1821 name, (unsigned long)count);
1da177e4 1822
222f1806 1823 if (!t) {
f9467eae 1824 pr_err("ERROR: No thread\n");
1da177e4
LT		 1825 ret = -EINVAL;
1826 goto out;
1827 }
1828
1829 pg_result = &(t->result[0]);
1830
222f1806
LC		 1831 if (!strcmp(name, "add_device")) {
1832 char f[32];
1833 memset(f, 0, 32);
1da177e4 1834 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1835 if (len < 0) {
1836 ret = len;
1da177e4
LT		 1837 goto out;
1838 }
222f1806 1839 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1840 return -EFAULT;
1841 i += len;
6146e6a4 1842 mutex_lock(&pktgen_thread_lock);
222f1806 1843 pktgen_add_device(t, f);
6146e6a4 1844 mutex_unlock(&pktgen_thread_lock);
222f1806
LC		 1845 ret = count;
1846 sprintf(pg_result, "OK: add_device=%s", f);
1da177e4
LT		 1847 goto out;
1848 }
1849
222f1806 1850 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1851 mutex_lock(&pktgen_thread_lock);
95ed63f7 1852 t->control |= T_REMDEVALL;
6146e6a4 1853 mutex_unlock(&pktgen_thread_lock);
222f1806 1854 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1855 ret = count;
222f1806 1856 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1857 goto out;
1858 }
1859
222f1806 1860 if (!strcmp(name, "max_before_softirq")) {
b163911f 1861 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1862 ret = count;
1da177e4
LT		 1863 goto out;
1864 }
1865
1866 ret = -EINVAL;
222f1806 1867out:
1da177e4
LT		 1868 return ret;
1869}
1870
d50a6b56 1871static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1872{
d50a6b56 1873 return single_open(file, pktgen_thread_show, PDE(inode)->data);
1da177e4
LT		 1874}
1875
9a32144e 1876static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1877 .owner = THIS_MODULE,
1878 .open = pktgen_thread_open,
1879 .read = seq_read,
1880 .llseek = seq_lseek,
1881 .write = pktgen_thread_write,
1882 .release = single_release,
d50a6b56 1883};
1da177e4
LT		 1884
1885/* Think find or remove for NN */
222f1806 1886static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
1da177e4
LT		 1887{
1888 struct pktgen_thread *t;
1889 struct pktgen_dev *pkt_dev = NULL;
3e984840 1890 bool exact = (remove == FIND);
1da177e4 1891
cdcdbe0b 1892 list_for_each_entry(t, &pktgen_threads, th_list) {
3e984840 1893 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1894 if (pkt_dev) {
222f1806
LC		 1895 if (remove) {
1896 if_lock(t);
1897 pkt_dev->removal_mark = 1;
1898 t->control |= T_REMDEV;
1899 if_unlock(t);
1900 }
1da177e4
LT		 1901 break;
1902 }
1da177e4 1903 }
222f1806 1904 return pkt_dev;
1da177e4
LT		 1905}
1906
95ed63f7
AK		 1907/*
1908 * mark a device for removal
1909 */
39df232f 1910static void pktgen_mark_device(const char *ifname)
1da177e4
LT		 1911{
1912 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1913 const int max_tries = 10, msec_per_try = 125;
1914 int i = 0;
95ed63f7 1915
6146e6a4 1916 mutex_lock(&pktgen_thread_lock);
f9467eae 1917 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1918
222f1806 1919 while (1) {
95ed63f7
AK		 1920
1921 pkt_dev = __pktgen_NN_threads(ifname, REMOVE);
222f1806
LC		 1922 if (pkt_dev == NULL)
1923 break; /* success */
95ed63f7 1924
6146e6a4 1925 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1926 pr_debug("%s: waiting for %s to disappear....\n",
1927 __func__, ifname);
95ed63f7 1928 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1929 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1930
1931 if (++i >= max_tries) {
f9467eae
JP		 1932 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1933 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1934 break;
1935 }
1936
1937 }
1938
6146e6a4 1939 mutex_unlock(&pktgen_thread_lock);
39df232f 1940}
95ed63f7 1941
39df232f
SH		 1942static void pktgen_change_name(struct net_device *dev)
1943{
1944 struct pktgen_thread *t;
1945
1946 list_for_each_entry(t, &pktgen_threads, th_list) {
1947 struct pktgen_dev *pkt_dev;
1948
1949 list_for_each_entry(pkt_dev, &t->if_list, list) {
1950 if (pkt_dev->odev != dev)
1951 continue;
1952
1953 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1954
2975315b
AD		 1955 pkt_dev->entry = proc_create_data(dev->name, 0600,
1956 pg_proc_dir,
1957 &pktgen_if_fops,
1958 pkt_dev);
39df232f 1959 if (!pkt_dev->entry)
f9467eae
JP		 1960 pr_err("can't move proc entry for '%s'\n",
1961 dev->name);
39df232f
SH		 1962 break;
1963 }
1964 }
1da177e4
LT		 1965}
1966
222f1806
LC		 1967static int pktgen_device_event(struct notifier_block *unused,
1968 unsigned long event, void *ptr)
1da177e4 1969{
39df232f 1970 struct net_device *dev = ptr;
1da177e4 1971
721499e8 1972 if (!net_eq(dev_net(dev), &init_net))
e9dc8653
EB		 1973 return NOTIFY_DONE;
1974
1da177e4
LT		 1975 /* It is OK that we do not hold the group lock right now,
1976 * as we run under the RTNL lock.
1977 */
1978
1979 switch (event) {
39df232f
SH		 1980 case NETDEV_CHANGENAME:
1981 pktgen_change_name(dev);
1da177e4 1982 break;
222f1806 1983
1da177e4 1984 case NETDEV_UNREGISTER:
222f1806 1985 pktgen_mark_device(dev->name);
1da177e4 1986 break;
3ff50b79 1987 }
1da177e4
LT		 1988
1989 return NOTIFY_DONE;
1990}
1991
63adc6fb
SH		 1992static struct net_device *pktgen_dev_get_by_name(struct pktgen_dev *pkt_dev,
1993 const char *ifname)
e6fce5b9
RO		 1994{
1995 char b[IFNAMSIZ+5];
d6182223 1996 int i;
e6fce5b9 1997
63adc6fb
SH		 1998 for (i = 0; ifname[i] != '@'; i++) {
1999 if (i == IFNAMSIZ)
e6fce5b9
RO		 2000 break;
2001
2002 b[i] = ifname[i];
2003 }
2004 b[i] = 0;
2005
2006 return dev_get_by_name(&init_net, b);
2007}
2008
2009
1da177e4
LT		 2010/* Associate pktgen_dev with a device. */
2011
39df232f 2012static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2013{
1da177e4 2014 struct net_device *odev;
39df232f 2015 int err;
1da177e4
LT		 2016
2017 /* Clean old setups */
1da177e4
LT		 2018 if (pkt_dev->odev) {
2019 dev_put(pkt_dev->odev);
222f1806
LC		 2020 pkt_dev->odev = NULL;
2021 }
1da177e4 2022
e6fce5b9 2023 odev = pktgen_dev_get_by_name(pkt_dev, ifname);
1da177e4 2024 if (!odev) {
f9467eae 2025 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2026 return -ENODEV;
1da177e4 2027 }
39df232f 2028
1da177e4 2029 if (odev->type != ARPHRD_ETHER) {
f9467eae 2030 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2031 err = -EINVAL;
2032 } else if (!netif_running(odev)) {
f9467eae 2033 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2034 err = -ENETDOWN;
2035 } else {
2036 pkt_dev->odev = odev;
2037 return 0;
1da177e4 2038 }
1da177e4 2039
1da177e4 2040 dev_put(odev);
39df232f 2041 return err;
1da177e4
LT		 2042}
2043
2044/* Read pkt_dev from the interface and set up internal pktgen_dev
2045 * structure to have the right information to create/send packets
2046 */
2047static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2048{
64c00d81
AG		 2049 int ntxq;
2050
222f1806 2051 if (!pkt_dev->odev) {
f9467eae 2052 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2053 sprintf(pkt_dev->result,
2054 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2055 return;
2056 }
2057
64c00d81
AG		 2058 /* make sure that we don't pick a non-existing transmit queue */
2059 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2060
64c00d81 2061 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2062 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2063 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2064 pkt_dev->odevname);
64c00d81
AG		 2065 pkt_dev->queue_map_min = ntxq - 1;
2066 }
88271660 2067 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2068 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2069 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
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)
f9467eae 2130 pr_err("ERROR: IPv6 link address not available\n");
1da177e4
LT		 2131 }
2132#endif
222f1806 2133 } else {
1da177e4
LT		 2134 pkt_dev->saddr_min = 0;
2135 pkt_dev->saddr_max = 0;
2136 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2137
2138 struct in_device *in_dev;
1da177e4
LT		 2139
2140 rcu_read_lock();
e5ed6399 2141 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2142 if (in_dev) {
2143 if (in_dev->ifa_list) {
222f1806
LC		 2144 pkt_dev->saddr_min =
2145 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2146 pkt_dev->saddr_max = pkt_dev->saddr_min;
2147 }
1da177e4
LT		 2148 }
2149 rcu_read_unlock();
222f1806 2150 } else {
1da177e4
LT		 2151 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2152 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2153 }
2154
2155 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2156 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2157 }
222f1806
LC		 2158 /* Initialize current values. */
2159 pkt_dev->cur_dst_mac_offset = 0;
2160 pkt_dev->cur_src_mac_offset = 0;
2161 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2162 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2163 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2164 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2165 pkt_dev->nflows = 0;
2166}
2167
fd29cf72
SH		 2168
2169static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2170{
ef87979c 2171 ktime_t start_time, end_time;
417bc4b8 2172 s64 remaining;
2bc481cf
SH		 2173 struct hrtimer_sleeper t;
2174
2175 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2176 hrtimer_set_expires(&t.timer, spin_until);
2177
43d28b65 2178 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2179 if (remaining <= 0) {
2180 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2181 return;
417bc4b8 2182 }
2bc481cf 2183
ef87979c 2184 start_time = ktime_now();
43d28b65
DT		 2185 if (remaining < 100000)
2186 ndelay(remaining); /* really small just spin */
2bc481cf
SH		 2187 else {
2188 /* see do_nanosleep */
2189 hrtimer_init_sleeper(&t, current);
2190 do {
2191 set_current_state(TASK_INTERRUPTIBLE);
2192 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2193 if (!hrtimer_active(&t.timer))
2194 t.task = NULL;
2195
2196 if (likely(t.task))
1da177e4 2197 schedule();
1da177e4 2198
2bc481cf
SH		 2199 hrtimer_cancel(&t.timer);
2200 } while (t.task && pkt_dev->running && !signal_pending(current));
2201 __set_current_state(TASK_RUNNING);
1da177e4 2202 }
ef87979c
SH		 2203 end_time = ktime_now();
2204
2205 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2206 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2207}
2208
16dab72f
JHS		 2209static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2210{
a553e4a6 2211 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2212 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2213 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2214 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2215}
2216
648fda74 2217static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2218{
648fda74 2219 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2220}
2221
2222static inline int f_pick(struct pktgen_dev *pkt_dev)
2223{
2224 int flow = pkt_dev->curfl;
2225
2226 if (pkt_dev->flags & F_FLOW_SEQ) {
2227 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2228 /* reset time */
2229 pkt_dev->flows[flow].count = 0;
1211a645 2230 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2231 pkt_dev->curfl += 1;
2232 if (pkt_dev->curfl >= pkt_dev->cflows)
2233 pkt_dev->curfl = 0; /*reset */
2234 }
2235 } else {
2236 flow = random32() % pkt_dev->cflows;
1211a645 2237 pkt_dev->curfl = flow;
007a531b 2238
1211a645 2239 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2240 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2241 pkt_dev->flows[flow].flags = 0;
2242 }
007a531b
JHS		 2243 }
2244
2245 return pkt_dev->curfl;
2246}
2247
a553e4a6
JHS		 2248
2249#ifdef CONFIG_XFRM
2250/* If there was already an IPSEC SA, we keep it as is, else
2251 * we go look for it ...
2252*/
bd55775c 2253#define DUMMY_MARK 0
fea1ab0f 2254static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2255{
2256 struct xfrm_state *x = pkt_dev->flows[flow].x;
2257 if (!x) {
2258 /*slow path: we dont already have xfrm_state*/
bd55775c 2259 x = xfrm_stateonly_find(&init_net, DUMMY_MARK,
5447c5e4 2260 (xfrm_address_t *)&pkt_dev->cur_daddr,
a553e4a6
JHS		 2261 (xfrm_address_t *)&pkt_dev->cur_saddr,
2262 AF_INET,
2263 pkt_dev->ipsmode,
2264 pkt_dev->ipsproto, 0);
2265 if (x) {
2266 pkt_dev->flows[flow].x = x;
2267 set_pkt_overhead(pkt_dev);
63adc6fb 2268 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2269 }
2270
2271 }
2272}
2273#endif
fd2ea0a7
DM		 2274static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2275{
e6fce5b9
RO		 2276
2277 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2278 pkt_dev->cur_queue_map = smp_processor_id();
2279
896a7cf8 2280 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2281 __u16 t;
2282 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
2283 t = random32() %
2284 (pkt_dev->queue_map_max -
2285 pkt_dev->queue_map_min + 1)
2286 + pkt_dev->queue_map_min;
2287 } else {
2288 t = pkt_dev->cur_queue_map + 1;
2289 if (t > pkt_dev->queue_map_max)
2290 t = pkt_dev->queue_map_min;
2291 }
2292 pkt_dev->cur_queue_map = t;
2293 }
bfdbc0ac 2294 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2295}
2296
1da177e4
LT		 2297/* Increment/randomize headers according to flags and current values
2298 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2299 */
222f1806
LC		 2300static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2301{
2302 __u32 imn;
2303 __u32 imx;
2304 int flow = 0;
1da177e4 2305
007a531b
JHS		 2306 if (pkt_dev->cflows)
2307 flow = f_pick(pkt_dev);
1da177e4
LT		 2308
2309 /* Deal with source MAC */
222f1806
LC		 2310 if (pkt_dev->src_mac_count > 1) {
2311 __u32 mc;
2312 __u32 tmp;
2313
2314 if (pkt_dev->flags & F_MACSRC_RND)
5fa6fc76 2315 mc = random32() % pkt_dev->src_mac_count;
222f1806
LC		 2316 else {
2317 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2318 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2319 pkt_dev->src_mac_count)
2320 pkt_dev->cur_src_mac_offset = 0;
2321 }
2322
2323 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2324 pkt_dev->hh[11] = tmp;
2325 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2326 pkt_dev->hh[10] = tmp;
2327 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2328 pkt_dev->hh[9] = tmp;
2329 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2330 pkt_dev->hh[8] = tmp;
2331 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2332 pkt_dev->hh[7] = tmp;
2333 }
2334
2335 /* Deal with Destination MAC */
2336 if (pkt_dev->dst_mac_count > 1) {
2337 __u32 mc;
2338 __u32 tmp;
2339
2340 if (pkt_dev->flags & F_MACDST_RND)
5fa6fc76 2341 mc = random32() % pkt_dev->dst_mac_count;
222f1806
LC		 2342
2343 else {
2344 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2345 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2346 pkt_dev->dst_mac_count) {
2347 pkt_dev->cur_dst_mac_offset = 0;
2348 }
2349 }
2350
2351 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2352 pkt_dev->hh[5] = tmp;
2353 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2354 pkt_dev->hh[4] = tmp;
2355 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2356 pkt_dev->hh[3] = tmp;
2357 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2358 pkt_dev->hh[2] = tmp;
2359 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2360 pkt_dev->hh[1] = tmp;
2361 }
2362
ca6549af
SW		 2363 if (pkt_dev->flags & F_MPLS_RND) {
2364 unsigned i;
e71a4783 2365 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2366 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2367 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
5fa6fc76 2368 ((__force __be32)random32() &
ca6549af
SW		 2369 htonl(0x000fffff));
2370 }
2371
34954ddc 2372 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
5fa6fc76 2373 pkt_dev->vlan_id = random32() & (4096-1);
34954ddc
FF		 2374 }
2375
2376 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
5fa6fc76 2377 pkt_dev->svlan_id = random32() & (4096 - 1);
34954ddc
FF		 2378 }
2379
222f1806
LC		 2380 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2381 if (pkt_dev->flags & F_UDPSRC_RND)
5fa6fc76
SH		 2382 pkt_dev->cur_udp_src = random32() %
2383 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2384 + pkt_dev->udp_src_min;
222f1806
LC		 2385
2386 else {
1da177e4
LT		 2387 pkt_dev->cur_udp_src++;
2388 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2389 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2390 }
2391 }
2392
2393 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2394 if (pkt_dev->flags & F_UDPDST_RND) {
5fa6fc76
SH		 2395 pkt_dev->cur_udp_dst = random32() %
2396 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2397 + pkt_dev->udp_dst_min;
222f1806 2398 } else {
1da177e4 2399 pkt_dev->cur_udp_dst++;
222f1806 2400 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2401 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2402 }
2403 }
1da177e4
LT		 2404
2405 if (!(pkt_dev->flags & F_IPV6)) {
2406
63adc6fb
SH		 2407 imn = ntohl(pkt_dev->saddr_min);
2408 imx = ntohl(pkt_dev->saddr_max);
2409 if (imn < imx) {
1da177e4 2410 __u32 t;
222f1806 2411 if (pkt_dev->flags & F_IPSRC_RND)
5fa6fc76 2412 t = random32() % (imx - imn) + imn;
1da177e4
LT		 2413 else {
2414 t = ntohl(pkt_dev->cur_saddr);
2415 t++;
63adc6fb 2416 if (t > imx)
1da177e4 2417 t = imn;
63adc6fb 2418
1da177e4
LT		 2419 }
2420 pkt_dev->cur_saddr = htonl(t);
2421 }
222f1806 2422
007a531b 2423 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2424 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2425 } else {
252e3346
AV		 2426 imn = ntohl(pkt_dev->daddr_min);
2427 imx = ntohl(pkt_dev->daddr_max);
2428 if (imn < imx) {
1da177e4 2429 __u32 t;
252e3346 2430 __be32 s;
1da177e4
LT		 2431 if (pkt_dev->flags & F_IPDST_RND) {
2432
5fa6fc76 2433 t = random32() % (imx - imn) + imn;
252e3346 2434 s = htonl(t);
1da177e4 2435
21cf2253
JP		 2436 while (ipv4_is_loopback(s) ||
2437 ipv4_is_multicast(s) ||
1e637c74 2438 ipv4_is_lbcast(s) ||
21cf2253
JP		 2439 ipv4_is_zeronet(s) ||
2440 ipv4_is_local_multicast(s)) {
5fa6fc76 2441 t = random32() % (imx - imn) + imn;
252e3346 2442 s = htonl(t);
1da177e4 2443 }
252e3346
AV		 2444 pkt_dev->cur_daddr = s;
2445 } else {
1da177e4
LT		 2446 t = ntohl(pkt_dev->cur_daddr);
2447 t++;
2448 if (t > imx) {
2449 t = imn;
2450 }
2451 pkt_dev->cur_daddr = htonl(t);
2452 }
2453 }
222f1806 2454 if (pkt_dev->cflows) {
007a531b 2455 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2456 pkt_dev->flows[flow].cur_daddr =
2457 pkt_dev->cur_daddr;
a553e4a6
JHS		 2458#ifdef CONFIG_XFRM
2459 if (pkt_dev->flags & F_IPSEC_ON)
2460 get_ipsec_sa(pkt_dev, flow);
2461#endif
1da177e4
LT		 2462 pkt_dev->nflows++;
2463 }
2464 }
222f1806
LC		 2465 } else { /* IPV6 * */
2466
2467 if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
2468 pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
2469 pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
2470 pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
1da177e4
LT		 2471 else {
2472 int i;
2473
2474 /* Only random destinations yet */
2475
222f1806 2476 for (i = 0; i < 4; i++) {
1da177e4 2477 pkt_dev->cur_in6_daddr.s6_addr32[i] =
5fa6fc76 2478 (((__force __be32)random32() |
222f1806
LC		 2479 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2480 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2481 }
222f1806 2482 }
1da177e4
LT		 2483 }
2484
222f1806
LC		 2485 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2486 __u32 t;
2487 if (pkt_dev->flags & F_TXSIZE_RND) {
5fa6fc76
SH		 2488 t = random32() %
2489 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2490 + pkt_dev->min_pkt_size;
222f1806 2491 } else {
1da177e4 2492 t = pkt_dev->cur_pkt_size + 1;
222f1806 2493 if (t > pkt_dev->max_pkt_size)
1da177e4 2494 t = pkt_dev->min_pkt_size;
222f1806
LC		 2495 }
2496 pkt_dev->cur_pkt_size = t;
2497 }
1da177e4 2498
fd2ea0a7 2499 set_cur_queue_map(pkt_dev);
45b270f8 2500
1da177e4
LT		 2501 pkt_dev->flows[flow].count++;
2502}
2503
a553e4a6
JHS		 2504
2505#ifdef CONFIG_XFRM
2506static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2507{
2508 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2509 int err = 0;
2510 struct iphdr *iph;
2511
2512 if (!x)
2513 return 0;
2514 /* XXX: we dont support tunnel mode for now until
2515 * we resolve the dst issue */
2516 if (x->props.mode != XFRM_MODE_TRANSPORT)
2517 return 0;
2518
2519 spin_lock(&x->lock);
2520 iph = ip_hdr(skb);
2521
13996378 2522 err = x->outer_mode->output(x, skb);
a553e4a6
JHS		 2523 if (err)
2524 goto error;
2525 err = x->type->output(x, skb);
2526 if (err)
2527 goto error;
2528
63adc6fb 2529 x->curlft.bytes += skb->len;
a553e4a6 2530 x->curlft.packets++;
a553e4a6
JHS		 2531error:
2532 spin_unlock(&x->lock);
2533 return err;
2534}
2535
475ac1e4 2536static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2537{
2538 if (pkt_dev->cflows) {
2539 /* let go of the SAs if we have them */
d6182223
PG		 2540 int i;
2541 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2542 struct xfrm_state *x = pkt_dev->flows[i].x;
2543 if (x) {
2544 xfrm_state_put(x);
2545 pkt_dev->flows[i].x = NULL;
2546 }
2547 }
2548 }
2549}
2550
475ac1e4 2551static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2552 struct sk_buff *skb, __be16 protocol)
2553{
2554 if (pkt_dev->flags & F_IPSEC_ON) {
2555 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2556 int nhead = 0;
2557 if (x) {
2558 int ret;
2559 __u8 *eth;
2560 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2561 if (nhead > 0) {
a553e4a6
JHS		 2562 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2563 if (ret < 0) {
f9467eae
JP		 2564 pr_err("Error expanding ipsec packet %d\n",
2565 ret);
b4bb4ac8 2566 goto err;
a553e4a6
JHS		 2567 }
2568 }
2569
2570 /* ipsec is not expecting ll header */
2571 skb_pull(skb, ETH_HLEN);
2572 ret = pktgen_output_ipsec(skb, pkt_dev);
2573 if (ret) {
f9467eae 2574 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2575 goto err;
a553e4a6
JHS		 2576 }
2577 /* restore ll */
2578 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2579 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2580 *(u16 *) &eth[12] = protocol;
a553e4a6
JHS		 2581 }
2582 }
2583 return 1;
b4bb4ac8
IJ		 2584err:
2585 kfree_skb(skb);
2586 return 0;
a553e4a6
JHS		 2587}
2588#endif
2589
ca6549af
SW		 2590static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2591{
2592 unsigned i;
63adc6fb 2593 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2594 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2595
ca6549af
SW		 2596 mpls--;
2597 *mpls |= MPLS_STACK_BOTTOM;
2598}
2599
0f37c605
AV		 2600static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2601 unsigned int prio)
2602{
2603 return htons(id | (cfi << 12) | (prio << 13));
2604}
2605
222f1806
LC		 2606static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2607 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2608{
2609 struct sk_buff *skb = NULL;
2610 __u8 *eth;
2611 struct udphdr *udph;
2612 int datalen, iplen;
2613 struct iphdr *iph;
222f1806 2614 struct pktgen_hdr *pgh = NULL;
d5f1ce9a 2615 __be16 protocol = htons(ETH_P_IP);
ca6549af 2616 __be32 *mpls;
34954ddc
FF		 2617 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2618 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2619 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2620 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2621 u16 queue_map;
ca6549af
SW		 2622
2623 if (pkt_dev->nr_labels)
d5f1ce9a 2624 protocol = htons(ETH_P_MPLS_UC);
222f1806 2625
34954ddc 2626 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2627 protocol = htons(ETH_P_8021Q);
34954ddc 2628
64053bee
RO		 2629 /* Update any of the values, used when we're incrementing various
2630 * fields.
2631 */
2632 mod_cur_headers(pkt_dev);
eb589063 2633 queue_map = pkt_dev->cur_queue_map;
64053bee 2634
7ac5459e 2635 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4
RO		 2636
2637 if (pkt_dev->flags & F_NODE) {
2638 int node;
2639
2640 if (pkt_dev->node >= 0)
2641 node = pkt_dev->node;
2642 else
2643 node = numa_node_id();
2644
2645 skb = __alloc_skb(NET_SKB_PAD + pkt_dev->cur_pkt_size + 64
2646 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT, 0, node);
2647 if (likely(skb)) {
2648 skb_reserve(skb, NET_SKB_PAD);
2649 skb->dev = odev;
2650 }
2651 }
2652 else
2653 skb = __netdev_alloc_skb(odev,
2654 pkt_dev->cur_pkt_size + 64
2655 + datalen + pkt_dev->pkt_overhead, GFP_NOWAIT);
2656
1da177e4
LT		 2657 if (!skb) {
2658 sprintf(pkt_dev->result, "No memory");
2659 return NULL;
2660 }
2661
7ac5459e 2662 skb_reserve(skb, datalen);
1da177e4
LT		 2663
2664 /* Reserve for ethernet and IP header */
2665 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2666 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2667 if (pkt_dev->nr_labels)
2668 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2669
2670 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2671 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2672 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2673 *svlan_tci = build_tci(pkt_dev->svlan_id,
2674 pkt_dev->svlan_cfi,
2675 pkt_dev->svlan_p);
34954ddc 2676 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2677 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2678 }
2679 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2680 *vlan_tci = build_tci(pkt_dev->vlan_id,
2681 pkt_dev->vlan_cfi,
2682 pkt_dev->vlan_p);
34954ddc 2683 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2684 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2685 }
2686
27a884dc 2687 skb->network_header = skb->tail;
b0e380b1 2688 skb->transport_header = skb->network_header + sizeof(struct iphdr);
ddc7b8e3 2689 skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
fd2ea0a7 2690 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2691 skb->priority = pkt_dev->skb_priority;
2692
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 */
2998 mod_cur_headers(pkt_dev);
eb589063 2999 queue_map = pkt_dev->cur_queue_map;
64053bee 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);
9e50e3ac 3038 skb->priority = pkt_dev->skb_priority;
ddc7b8e3
ACM		 3039 iph = ipv6_hdr(skb);
3040 udph = udp_hdr(skb);
1da177e4 3041
1da177e4 3042 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 3043 *(__be16 *) &eth[12] = protocol;
64053bee 3044
ca6549af
SW		 3045 /* Eth + IPh + UDPh + mpls */
3046 datalen = pkt_dev->cur_pkt_size - 14 -
3047 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 3048 pkt_dev->pkt_overhead;
1da177e4 3049
222f1806 3050 if (datalen < sizeof(struct pktgen_hdr)) {
1da177e4
LT		 3051 datalen = sizeof(struct pktgen_hdr);
3052 if (net_ratelimit())
f9467eae 3053 pr_info("increased datalen to %d\n", 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
f9467eae 3180 func_enter();
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
f9467eae 3213 func_enter();
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
f9467eae 3278 func_enter();
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
f9467eae 3297 func_enter();
eb37b41c
JB		 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) {
f9467eae
JP		 3347 pr_warning("interface: %s is already stopped\n",
3348 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
f9467eae 3384 func_enter();
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
f9467eae 3404 func_enter();
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 3429
f9467eae
JP		 3430 func_enter();
3431
222f1806 3432 /* Remove all devices, free mem */
95ed63f7 3433
222f1806 3434 if_lock(t);
1da177e4 3435
c26a8016
LC		 3436 list_for_each_safe(q, n, &t->if_list) {
3437 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3438
86dc1ad2 3439 kfree_skb(cur->skb);
95ed63f7
AK		 3440 cur->skb = NULL;
3441
1da177e4
LT		 3442 pktgen_remove_device(t, cur);
3443 }
3444
222f1806 3445 if_unlock(t);
1da177e4
LT		 3446}
3447
222f1806 3448static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3449{
222f1806 3450 /* Remove from the thread list */
1da177e4 3451
ee74baa7 3452 remove_proc_entry(t->tsk->comm, pg_proc_dir);
1da177e4 3453
6146e6a4 3454 mutex_lock(&pktgen_thread_lock);
1da177e4 3455
cdcdbe0b
LC		 3456 list_del(&t->th_list);
3457
6146e6a4 3458 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3459}
3460
ef87979c 3461static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3462{
fd29cf72 3463 ktime_t idle_start = ktime_now();
ef87979c
SH		 3464 schedule();
3465 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3466}
3791decb 3467
ef87979c
SH		 3468static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3469{
3470 ktime_t idle_start = ktime_now();
3791decb 3471
ef87979c
SH		 3472 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3473 if (signal_pending(current))
3474 break;
3475
3476 if (need_resched())
3477 pktgen_resched(pkt_dev);
3478 else
3479 cpu_relax();
3480 }
fd29cf72 3481 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_now(), idle_start));
3791decb
SH		 3482}
3483
475ac1e4 3484static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3485{
00829823 3486 struct net_device *odev = pkt_dev->odev;
6fef4c0c 3487 netdev_tx_t (*xmit)(struct sk_buff *, struct net_device *)
00829823 3488 = odev->netdev_ops->ndo_start_xmit;
fd2ea0a7 3489 struct netdev_queue *txq;
fd2ea0a7 3490 u16 queue_map;
1da177e4
LT		 3491 int ret;
3492
ef87979c
SH		 3493 /* If device is offline, then don't send */
3494 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3495 pktgen_stop_device(pkt_dev);
3496 return;
fd2ea0a7
DM		 3497 }
3498
ef87979c
SH		 3499 /* This is max DELAY, this has special meaning of
3500 * "never transmit"
3501 */
3502 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
3503 pkt_dev->next_tx = ktime_add_ns(ktime_now(), ULONG_MAX);
3791decb 3504 return;
1da177e4 3505 }
222f1806 3506
ef87979c 3507 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3508 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3509 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3510 /* build a new pkt */
3511 kfree_skb(pkt_dev->skb);
3512
3513 pkt_dev->skb = fill_packet(odev, pkt_dev);
3514 if (pkt_dev->skb == NULL) {
f9467eae 3515 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 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
f9467eae 3595 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3596
ee74baa7 3597 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3598
83144186
RW		 3599 set_freezable();
3600
ee74baa7
DM		 3601 while (!kthread_should_stop()) {
3602 pkt_dev = next_to_run(t);
1da177e4 3603
ef87979c
SH		 3604 if (unlikely(!pkt_dev && t->control == 0)) {
3605 wait_event_interruptible_timeout(t->queue,
3606 t->control != 0,
3607 HZ/10);
1b3f720b 3608 try_to_freeze();
ef87979c 3609 continue;
ee74baa7 3610 }
1da177e4 3611
ee74baa7 3612 __set_current_state(TASK_RUNNING);
222f1806 3613
ef87979c 3614 if (likely(pkt_dev)) {
1da177e4
LT		 3615 pktgen_xmit(pkt_dev);
3616
ef87979c
SH		 3617 if (need_resched())
3618 pktgen_resched(pkt_dev);
3619 else
3620 cpu_relax();
3621 }
3622
222f1806 3623 if (t->control & T_STOP) {
1da177e4
LT		 3624 pktgen_stop(t);
3625 t->control &= ~(T_STOP);
3626 }
3627
222f1806 3628 if (t->control & T_RUN) {
1da177e4
LT		 3629 pktgen_run(t);
3630 t->control &= ~(T_RUN);
3631 }
3632
222f1806 3633 if (t->control & T_REMDEVALL) {
1da177e4 3634 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3635 t->control &= ~(T_REMDEVALL);
3636 }
3637
222f1806 3638 if (t->control & T_REMDEV) {
95ed63f7 3639 pktgen_rem_one_if(t);
1da177e4
LT		 3640 t->control &= ~(T_REMDEV);
3641 }
3642
09fe3ef4
AM		 3643 try_to_freeze();
3644
ee74baa7 3645 set_current_state(TASK_INTERRUPTIBLE);
222f1806 3646 }
1da177e4 3647
f9467eae 3648 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3649 pktgen_stop(t);
1da177e4 3650
f9467eae 3651 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3652 pktgen_rem_all_ifs(t);
1da177e4 3653
f9467eae 3654 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3655 pktgen_rem_thread(t);
cdcdbe0b 3656
ee74baa7 3657 return 0;
1da177e4
LT		 3658}
3659
222f1806 3660static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3661 const char *ifname, bool exact)
1da177e4 3662{
c26a8016 3663 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3664 size_t len = strlen(ifname);
222f1806 3665
3e984840 3666 if_lock(t);
c26a8016 3667 list_for_each_entry(p, &t->if_list, list)
3e984840
ED		 3668 if (strncmp(p->odevname, ifname, len) == 0) {
3669 if (p->odevname[len]) {
3670 if (exact || p->odevname[len] != '@')
3671 continue;
3672 }
c26a8016 3673 pkt_dev = p;
222f1806
LC		 3674 break;
3675 }
222f1806
LC		 3676
3677 if_unlock(t);
f9467eae 3678 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3679 return pkt_dev;
1da177e4
LT		 3680}
3681
4ec93edb
YH		 3682/*
3683 * Adds a dev at front of if_list.
1da177e4
LT		 3684 */
3685
222f1806
LC		 3686static int add_dev_to_thread(struct pktgen_thread *t,
3687 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3688{
3689 int rv = 0;
222f1806
LC		 3690
3691 if_lock(t);
3692
3693 if (pkt_dev->pg_thread) {
f9467eae 3694 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3695 rv = -EBUSY;
3696 goto out;
3697 }
c26a8016
LC		 3698
3699 list_add(&pkt_dev->list, &t->if_list);
222f1806 3700 pkt_dev->pg_thread = t;
1da177e4
LT		 3701 pkt_dev->running = 0;
3702
222f1806
LC		 3703out:
3704 if_unlock(t);
3705 return rv;
1da177e4
LT		 3706}
3707
3708/* Called under thread lock */
3709
222f1806 3710static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3711{
222f1806 3712 struct pktgen_dev *pkt_dev;
39df232f 3713 int err;
3291b9db 3714 int node = cpu_to_node(t->cpu);
222f1806 3715
1da177e4
LT		 3716 /* We don't allow a device to be on several threads */
3717
d50a6b56
SH		 3718 pkt_dev = __pktgen_NN_threads(ifname, FIND);
3719 if (pkt_dev) {
f9467eae 3720 pr_err("ERROR: interface already used\n");
222f1806
LC		 3721 return -EBUSY;
3722 }
d50a6b56 3723
3291b9db 3724 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3725 if (!pkt_dev)
3726 return -ENOMEM;
3727
593f63b0 3728 strcpy(pkt_dev->odevname, ifname);
3291b9db
ED		 3729 pkt_dev->flows = vmalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3730 node);
d50a6b56
SH		 3731 if (pkt_dev->flows == NULL) {
3732 kfree(pkt_dev);
3733 return -ENOMEM;
3734 }
222f1806 3735 memset(pkt_dev->flows, 0, MAX_CFLOWS * sizeof(struct flow_state));
d50a6b56 3736
95ed63f7 3737 pkt_dev->removal_mark = 0;
d50a6b56
SH		 3738 pkt_dev->min_pkt_size = ETH_ZLEN;
3739 pkt_dev->max_pkt_size = ETH_ZLEN;
3740 pkt_dev->nfrags = 0;
3741 pkt_dev->clone_skb = pg_clone_skb_d;
fd29cf72 3742 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3743 pkt_dev->count = pg_count_d;
3744 pkt_dev->sofar = 0;
222f1806 3745 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3746 pkt_dev->udp_src_max = 9;
3747 pkt_dev->udp_dst_min = 9;
3748 pkt_dev->udp_dst_max = 9;
3749
34954ddc
FF		 3750 pkt_dev->vlan_p = 0;
3751 pkt_dev->vlan_cfi = 0;
3752 pkt_dev->vlan_id = 0xffff;
3753 pkt_dev->svlan_p = 0;
3754 pkt_dev->svlan_cfi = 0;
3755 pkt_dev->svlan_id = 0xffff;
e99b99b4 3756 pkt_dev->node = -1;
34954ddc 3757
39df232f
SH		 3758 err = pktgen_setup_dev(pkt_dev, ifname);
3759 if (err)
3760 goto out1;
d50a6b56 3761
5efdccbc
DL		 3762 pkt_dev->entry = proc_create_data(ifname, 0600, pg_proc_dir,
3763 &pktgen_if_fops, pkt_dev);
39df232f 3764 if (!pkt_dev->entry) {
f9467eae 3765 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3766 PG_PROC_DIR, ifname);
39df232f
SH		 3767 err = -EINVAL;
3768 goto out2;
d50a6b56 3769 }
a553e4a6
JHS		 3770#ifdef CONFIG_XFRM
3771 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3772 pkt_dev->ipsproto = IPPROTO_ESP;
3773#endif
d50a6b56
SH		 3774
3775 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3776out2:
3777 dev_put(pkt_dev->odev);
3778out1:
a553e4a6
JHS		 3779#ifdef CONFIG_XFRM
3780 free_SAs(pkt_dev);
3781#endif
1d0ebfe7 3782 vfree(pkt_dev->flows);
39df232f
SH		 3783 kfree(pkt_dev);
3784 return err;
1da177e4
LT		 3785}
3786
ee74baa7 3787static int __init pktgen_create_thread(int cpu)
1da177e4 3788{
cdcdbe0b 3789 struct pktgen_thread *t;
d50a6b56 3790 struct proc_dir_entry *pe;
ee74baa7 3791 struct task_struct *p;
222f1806 3792
3291b9db
ED		 3793 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3794 cpu_to_node(cpu));
222f1806 3795 if (!t) {
f9467eae 3796 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3797 return -ENOMEM;
3798 }
3799
222f1806 3800 spin_lock_init(&t->if_lock);
1da177e4 3801 t->cpu = cpu;
222f1806 3802
ee74baa7
DM		 3803 INIT_LIST_HEAD(&t->if_list);
3804
3805 list_add_tail(&t->th_list, &pktgen_threads);
d3ede327 3806 init_completion(&t->start_done);
ee74baa7
DM		 3807
3808 p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
3809 if (IS_ERR(p)) {
f9467eae 3810 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3811 list_del(&t->th_list);
3812 kfree(t);
3813 return PTR_ERR(p);
3814 }
3815 kthread_bind(p, cpu);
3816 t->tsk = p;
3817
5efdccbc
DL		 3818 pe = proc_create_data(t->tsk->comm, 0600, pg_proc_dir,
3819 &pktgen_thread_fops, t);
222f1806 3820 if (!pe) {
f9467eae 3821 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3822 PG_PROC_DIR, t->tsk->comm);
3823 kthread_stop(p);
3824 list_del(&t->th_list);
222f1806
LC		 3825 kfree(t);
3826 return -EINVAL;
3827 }
d50a6b56 3828
ee74baa7 3829 wake_up_process(p);
d3ede327 3830 wait_for_completion(&t->start_done);
1da177e4
LT		 3831
3832 return 0;
3833}
3834
4ec93edb
YH		 3835/*
3836 * Removes a device from the thread if_list.
1da177e4 3837 */
222f1806
LC		 3838static void _rem_dev_from_if_list(struct pktgen_thread *t,
3839 struct pktgen_dev *pkt_dev)
1da177e4 3840{
c26a8016
LC		 3841 struct list_head *q, *n;
3842 struct pktgen_dev *p;
1da177e4 3843
c26a8016
LC		 3844 list_for_each_safe(q, n, &t->if_list) {
3845 p = list_entry(q, struct pktgen_dev, list);
3846 if (p == pkt_dev)
3847 list_del(&p->list);
1da177e4
LT		 3848 }
3849}
3850
222f1806
LC		 3851static int pktgen_remove_device(struct pktgen_thread *t,
3852 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3853{
3854
f9467eae 3855 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3856
222f1806 3857 if (pkt_dev->running) {
f9467eae 3858 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3859 pktgen_stop_device(pkt_dev);
3860 }
3861
3862 /* Dis-associate from the interface */
1da177e4
LT		 3863
3864 if (pkt_dev->odev) {
3865 dev_put(pkt_dev->odev);
222f1806
LC		 3866 pkt_dev->odev = NULL;
3867 }
3868
1da177e4
LT		 3869 /* And update the thread if_list */
3870
3871 _rem_dev_from_if_list(t, pkt_dev);
3872
39df232f
SH		 3873 if (pkt_dev->entry)
3874 remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
1da177e4 3875
a553e4a6
JHS		 3876#ifdef CONFIG_XFRM
3877 free_SAs(pkt_dev);
3878#endif
1d0ebfe7 3879 vfree(pkt_dev->flows);
1da177e4 3880 kfree(pkt_dev);
222f1806 3881 return 0;
1da177e4
LT		 3882}
3883
222f1806 3884static int __init pg_init(void)
1da177e4
LT		 3885{
3886 int cpu;
d50a6b56 3887 struct proc_dir_entry *pe;
1da177e4 3888
f9467eae 3889 pr_info("%s", version);
1da177e4 3890
457c4cbc 3891 pg_proc_dir = proc_mkdir(PG_PROC_DIR, init_net.proc_net);
d50a6b56
SH		 3892 if (!pg_proc_dir)
3893 return -ENODEV;
1da177e4 3894
25296d59 3895 pe = proc_create(PGCTRL, 0600, pg_proc_dir, &pktgen_fops);
222f1806 3896 if (pe == NULL) {
f9467eae 3897 pr_err("ERROR: cannot create %s procfs entry\n", PGCTRL);
457c4cbc 3898 proc_net_remove(&init_net, PG_PROC_DIR);
222f1806
LC		 3899 return -EINVAL;
3900 }
1da177e4 3901
1da177e4
LT		 3902 /* Register us to receive netdevice events */
3903 register_netdevice_notifier(&pktgen_notifier_block);
222f1806 3904
670c02c2 3905 for_each_online_cpu(cpu) {
8024bb24 3906 int err;
1da177e4 3907
ee74baa7 3908 err = pktgen_create_thread(cpu);
8024bb24 3909 if (err)
f9467eae
JP		 3910 pr_warning("WARNING: Cannot create thread for cpu %d (%d)\n",
3911 cpu, err);
222f1806 3912 }
8024bb24
LC		 3913
3914 if (list_empty(&pktgen_threads)) {
f9467eae 3915 pr_err("ERROR: Initialization failed for all threads\n");
8024bb24
LC		 3916 unregister_netdevice_notifier(&pktgen_notifier_block);
3917 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3918 proc_net_remove(&init_net, PG_PROC_DIR);
8024bb24
LC		 3919 return -ENODEV;
3920 }
3921
222f1806 3922 return 0;
1da177e4
LT		 3923}
3924
3925static void __exit pg_cleanup(void)
3926{
cdcdbe0b
LC		 3927 struct pktgen_thread *t;
3928 struct list_head *q, *n;
1da177e4 3929
222f1806 3930 /* Stop all interfaces & threads */
1da177e4 3931
cdcdbe0b
LC		 3932 list_for_each_safe(q, n, &pktgen_threads) {
3933 t = list_entry(q, struct pktgen_thread, th_list);
ee74baa7
DM		 3934 kthread_stop(t->tsk);
3935 kfree(t);
222f1806 3936 }
1da177e4 3937
222f1806 3938 /* Un-register us from receiving netdevice events */
1da177e4
LT		 3939 unregister_netdevice_notifier(&pktgen_notifier_block);
3940
222f1806 3941 /* Clean up proc file system */
d50a6b56 3942 remove_proc_entry(PGCTRL, pg_proc_dir);
457c4cbc 3943 proc_net_remove(&init_net, PG_PROC_DIR);
1da177e4
LT		 3944}
3945
1da177e4
LT		 3946module_init(pg_init);
3947module_exit(pg_cleanup);
3948
c3d2f52d 3949MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3950MODULE_DESCRIPTION("Packet Generator tool");
3951MODULE_LICENSE("GPL");
c3d2f52d 3952MODULE_VERSION(VERSION);
1da177e4 3953module_param(pg_count_d, int, 0);
c3d2f52d 3954MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3955module_param(pg_delay_d, int, 0);
c3d2f52d 3956MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3957module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3958MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3959module_param(debug, int, 0);
c3d2f52d 3960MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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