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[deliverable/linux.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
8788370a
JDB		 72 * way.
73 * The if_list is RCU protected, and the if_lock remains to protect updating
74 * of if_list, from "add_device" as it invoked from userspace (via proc write).
1da177e4 75 *
4ec93edb
YH		 76 * By design there should only be *one* "controlling" process. In practice
77 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 78 * to /proc gives result code thats should be read be the "writer".
b4099fab 79 * For practical use this should be no problem.
1da177e4 80 *
4ec93edb
YH		 81 * Note when adding devices to a specific CPU there good idea to also assign
82 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 83 * --ro
84 *
4ec93edb 85 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 86 * memleak 030710- KJP
87 *
88 * First "ranges" functionality for ipv6 030726 --ro
89 *
90 * Included flow support. 030802 ANK.
91 *
92 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 93 *
1da177e4
LT		 94 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
95 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
96 *
4ec93edb 97 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 98 * <shemminger@osdl.org> 040923
99 *
ca9f1fd2 100 * Randy Dunlap fixed u64 printk compiler warning
1da177e4
LT		 101 *
102 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
103 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
104 *
4ec93edb 105 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 106 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
107 *
4ec93edb 108 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 109 * 050103
ca6549af
SW		 110 *
111 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
112 *
34954ddc
FF		 113 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
114 *
ce5d0b47
AR		 115 * Fixed src_mac command to set source mac of packet to value specified in
116 * command by Adit Ranadive <adit.262@gmail.com>
117 *
1da177e4 118 */
f9467eae
JP		 119
120#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
121
1da177e4
LT		 122#include <linux/sys.h>
123#include <linux/types.h>
124#include <linux/module.h>
125#include <linux/moduleparam.h>
126#include <linux/kernel.h>
222fa076 127#include <linux/mutex.h>
1da177e4
LT		 128#include <linux/sched.h>
129#include <linux/slab.h>
130#include <linux/vmalloc.h>
1da177e4
LT		 131#include <linux/unistd.h>
132#include <linux/string.h>
133#include <linux/ptrace.h>
134#include <linux/errno.h>
135#include <linux/ioport.h>
136#include <linux/interrupt.h>
4fc268d2 137#include <linux/capability.h>
2bc481cf 138#include <linux/hrtimer.h>
09fe3ef4 139#include <linux/freezer.h>
1da177e4
LT		 140#include <linux/delay.h>
141#include <linux/timer.h>
cdcdbe0b 142#include <linux/list.h>
1da177e4
LT		 143#include <linux/init.h>
144#include <linux/skbuff.h>
145#include <linux/netdevice.h>
146#include <linux/inet.h>
147#include <linux/inetdevice.h>
148#include <linux/rtnetlink.h>
149#include <linux/if_arp.h>
34954ddc 150#include <linux/if_vlan.h>
1da177e4
LT		 151#include <linux/in.h>
152#include <linux/ip.h>
153#include <linux/ipv6.h>
154#include <linux/udp.h>
155#include <linux/proc_fs.h>
d50a6b56 156#include <linux/seq_file.h>
1da177e4 157#include <linux/wait.h>
f404e9a6 158#include <linux/etherdevice.h>
ee74baa7 159#include <linux/kthread.h>
268bb0ce 160#include <linux/prefetch.h>
457c4cbc 161#include <net/net_namespace.h>
1da177e4
LT		 162#include <net/checksum.h>
163#include <net/ipv6.h>
c26bf4a5 164#include <net/udp.h>
73d94e94 165#include <net/ip6_checksum.h>
1da177e4 166#include <net/addrconf.h>
a553e4a6
JHS		 167#ifdef CONFIG_XFRM
168#include <net/xfrm.h>
169#endif
4e58a027 170#include <net/netns/generic.h>
1da177e4
LT		 171#include <asm/byteorder.h>
172#include <linux/rcupdate.h>
1977f032 173#include <linux/bitops.h>
63adc6fb
SH		 174#include <linux/io.h>
175#include <linux/timex.h>
176#include <linux/uaccess.h>
1da177e4 177#include <asm/dma.h>
222f1806 178#include <asm/div64.h> /* do_div */
1da177e4 179
40207264 180#define VERSION "2.75"
1da177e4 181#define IP_NAME_SZ 32
ca6549af 182#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
d5f1ce9a 183#define MPLS_STACK_BOTTOM htonl(0x00000100)
1da177e4 184
f9467eae
JP		 185#define func_enter() pr_debug("entering %s\n", __func__);
186
1da177e4 187/* Device flag bits */
222f1806
LC		 188#define F_IPSRC_RND (1<<0) /* IP-Src Random */
189#define F_IPDST_RND (1<<1) /* IP-Dst Random */
190#define F_UDPSRC_RND (1<<2) /* UDP-Src Random */
191#define F_UDPDST_RND (1<<3) /* UDP-Dst Random */
192#define F_MACSRC_RND (1<<4) /* MAC-Src Random */
193#define F_MACDST_RND (1<<5) /* MAC-Dst Random */
194#define F_TXSIZE_RND (1<<6) /* Transmit size is random */
195#define F_IPV6 (1<<7) /* Interface in IPV6 Mode */
ca6549af 196#define F_MPLS_RND (1<<8) /* Random MPLS labels */
34954ddc
FF		 197#define F_VID_RND (1<<9) /* Random VLAN ID */
198#define F_SVID_RND (1<<10) /* Random SVLAN ID */
007a531b 199#define F_FLOW_SEQ (1<<11) /* Sequential flows */
a553e4a6 200#define F_IPSEC_ON (1<<12) /* ipsec on for flows */
45b270f8 201#define F_QUEUE_MAP_RND (1<<13) /* queue map Random */
e6fce5b9 202#define F_QUEUE_MAP_CPU (1<<14) /* queue map mirrors smp_processor_id() */
e99b99b4 203#define F_NODE (1<<15) /* Node memory alloc*/
c26bf4a5 204#define F_UDPCSUM (1<<16) /* Include UDP checksum */
afb84b62 205#define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */
1da177e4
LT		 206
207/* Thread control flag bits */
6b80d6a6
SH		 208#define T_STOP (1<<0) /* Stop run */
209#define T_RUN (1<<1) /* Start run */
210#define T_REMDEVALL (1<<2) /* Remove all devs */
211#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 212
62f64aed
AS		 213/* Xmit modes */
214#define M_START_XMIT 0 /* Default normal TX */
215#define M_NETIF_RECEIVE 1 /* Inject packets into stack */
0967f244 216#define M_QUEUE_XMIT 2 /* Inject packet into qdisc */
62f64aed 217
8788370a 218/* If lock -- protects updating of if_list */
1da177e4
LT		 219#define if_lock(t) spin_lock(&(t->if_lock));
220#define if_unlock(t) spin_unlock(&(t->if_lock));
221
222/* Used to help with determining the pkts on receive */
223#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 224#define PG_PROC_DIR "pktgen"
225#define PGCTRL "pgctrl"
1da177e4
LT		 226
227#define MAX_CFLOWS 65536
228
34954ddc
FF		 229#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
230#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
231
222f1806 232struct flow_state {
252e3346 233 __be32 cur_daddr;
222f1806 234 int count;
a553e4a6
JHS		 235#ifdef CONFIG_XFRM
236 struct xfrm_state *x;
237#endif
007a531b 238 __u32 flags;
1da177e4
LT		 239};
240
007a531b
JHS		 241/* flow flag bits */
242#define F_INIT (1<<0) /* flow has been initialized */
243
1da177e4 244struct pktgen_dev {
1da177e4
LT		 245 /*
246 * Try to keep frequent/infrequent used vars. separated.
247 */
39df232f
SH		 248 struct proc_dir_entry *entry; /* proc file */
249 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 250 struct list_head list; /* chaining in the thread's run-queue */
8788370a 251 struct rcu_head rcu; /* freed by RCU */
1da177e4 252
63adc6fb 253 int running; /* if false, the test will stop */
1da177e4 254
222f1806
LC		 255 /* If min != max, then we will either do a linear iteration, or
256 * we will do a random selection from within the range.
257 */
258 __u32 flags;
62f64aed 259 int xmit_mode;
68bf9f0b
AW		 260 int min_pkt_size;
261 int max_pkt_size;
16dab72f 262 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 263 int nfrags;
62f64aed
AS		 264 int removal_mark; /* non-zero => the device is marked for
265 * removal by worker thread */
266
26ad7879 267 struct page *page;
fd29cf72
SH		 268 u64 delay; /* nano-seconds */
269
222f1806
LC		 270 __u64 count; /* Default No packets to send */
271 __u64 sofar; /* How many pkts we've sent so far */
272 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 273 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 274
275 /* runtime counters relating to clone_skb */
222f1806 276
222f1806
LC		 277 __u32 clone_count;
278 int last_ok; /* Was last skb sent?
63adc6fb
SH		 279 * Or a failed transmit of some sort?
280 * This will keep sequence numbers in order
222f1806 281 */
fd29cf72
SH		 282 ktime_t next_tx;
283 ktime_t started_at;
284 ktime_t stopped_at;
285 u64 idle_acc; /* nano-seconds */
286
222f1806
LC		 287 __u32 seq_num;
288
63adc6fb
SH		 289 int clone_skb; /*
290 * Use multiple SKBs during packet gen.
291 * If this number is greater than 1, then
292 * that many copies of the same packet will be
293 * sent before a new packet is allocated.
294 * If you want to send 1024 identical packets
295 * before creating a new packet,
296 * set clone_skb to 1024.
222f1806
LC		 297 */
298
299 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
300 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
301 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
302 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
303
304 struct in6_addr in6_saddr;
305 struct in6_addr in6_daddr;
306 struct in6_addr cur_in6_daddr;
307 struct in6_addr cur_in6_saddr;
1da177e4 308 /* For ranges */
222f1806
LC		 309 struct in6_addr min_in6_daddr;
310 struct in6_addr max_in6_daddr;
311 struct in6_addr min_in6_saddr;
312 struct in6_addr max_in6_saddr;
313
314 /* If we're doing ranges, random or incremental, then this
315 * defines the min/max for those ranges.
316 */
252e3346
AV		 317 __be32 saddr_min; /* inclusive, source IP address */
318 __be32 saddr_max; /* exclusive, source IP address */
319 __be32 daddr_min; /* inclusive, dest IP address */
320 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 321
322 __u16 udp_src_min; /* inclusive, source UDP port */
323 __u16 udp_src_max; /* exclusive, source UDP port */
324 __u16 udp_dst_min; /* inclusive, dest UDP port */
325 __u16 udp_dst_max; /* exclusive, dest UDP port */
326
1ca7768c 327 /* DSCP + ECN */
63adc6fb
SH		 328 __u8 tos; /* six MSB of (former) IPv4 TOS
329 are for dscp codepoint */
330 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
331 (see RFC 3260, sec. 4) */
1ca7768c 332
ca6549af 333 /* MPLS */
95c96174 334 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 335 __be32 labels[MAX_MPLS_LABELS];
336
34954ddc
FF		 337 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
338 __u8 vlan_p;
339 __u8 vlan_cfi;
340 __u16 vlan_id; /* 0xffff means no vlan tag */
341
342 __u8 svlan_p;
343 __u8 svlan_cfi;
344 __u16 svlan_id; /* 0xffff means no svlan tag */
345
222f1806
LC		 346 __u32 src_mac_count; /* How many MACs to iterate through */
347 __u32 dst_mac_count; /* How many MACs to iterate through */
348
349 unsigned char dst_mac[ETH_ALEN];
350 unsigned char src_mac[ETH_ALEN];
351
352 __u32 cur_dst_mac_offset;
353 __u32 cur_src_mac_offset;
252e3346
AV		 354 __be32 cur_saddr;
355 __be32 cur_daddr;
66ed1e5e 356 __u16 ip_id;
222f1806
LC		 357 __u16 cur_udp_dst;
358 __u16 cur_udp_src;
45b270f8 359 __u16 cur_queue_map;
222f1806 360 __u32 cur_pkt_size;
baac8564 361 __u32 last_pkt_size;
222f1806
LC		 362
363 __u8 hh[14];
364 /* = {
365 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
366
367 We fill in SRC address later
368 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
369 0x08, 0x00
370 };
371 */
372 __u16 pad; /* pad out the hh struct to an even 16 bytes */
373
63adc6fb 374 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 375 * are transmitting the same one multiple times
376 */
63adc6fb
SH		 377 struct net_device *odev; /* The out-going device.
378 * Note that the device should have it's
379 * pg_info pointer pointing back to this
380 * device.
381 * Set when the user specifies the out-going
382 * device name (not when the inject is
383 * started as it used to do.)
384 */
593f63b0 385 char odevname[32];
1da177e4 386 struct flow_state *flows;
95c96174
ED		 387 unsigned int cflows; /* Concurrent flows (config) */
388 unsigned int lflow; /* Flow length (config) */
389 unsigned int nflows; /* accumulated flows (stats) */
390 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 391
392 u16 queue_map_min;
393 u16 queue_map_max;
9e50e3ac 394 __u32 skb_priority; /* skb priority field */
38b2cf29 395 unsigned int burst; /* number of duplicated packets to burst */
e99b99b4 396 int node; /* Memory node */
45b270f8 397
a553e4a6
JHS		 398#ifdef CONFIG_XFRM
399 __u8 ipsmode; /* IPSEC mode (config) */
400 __u8 ipsproto; /* IPSEC type (config) */
de4aee7d 401 __u32 spi;
cf93d47e
FD		 402 struct dst_entry dst;
403 struct dst_ops dstops;
a553e4a6 404#endif
39df232f 405 char result[512];
1da177e4
LT		 406};
407
408struct pktgen_hdr {
252e3346
AV		 409 __be32 pgh_magic;
410 __be32 seq_num;
411 __be32 tv_sec;
412 __be32 tv_usec;
1da177e4
LT		 413};
414
4e58a027
CW		 415
416static int pg_net_id __read_mostly;
417
418struct pktgen_net {
419 struct net *net;
420 struct proc_dir_entry *proc_dir;
421 struct list_head pktgen_threads;
422 bool pktgen_exiting;
423};
551eaff1 424
1da177e4 425struct pktgen_thread {
63adc6fb 426 spinlock_t if_lock; /* for list of devices */
c26a8016 427 struct list_head if_list; /* All device here */
cdcdbe0b 428 struct list_head th_list;
ee74baa7 429 struct task_struct *tsk;
222f1806 430 char result[512];
222f1806 431
63adc6fb
SH		 432 /* Field for thread to receive "posted" events terminate,
433 stop ifs etc. */
222f1806
LC		 434
435 u32 control;
1da177e4
LT		 436 int cpu;
437
222f1806 438 wait_queue_head_t queue;
d3ede327 439 struct completion start_done;
4e58a027 440 struct pktgen_net *net;
1da177e4
LT		 441};
442
443#define REMOVE 1
444#define FIND 0
445
c3d2f52d 446static const char version[] =
f9467eae
JP		 447 "Packet Generator for packet performance testing. "
448 "Version: " VERSION "\n";
1da177e4 449
222f1806
LC		 450static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
451static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
452static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 453 const char *ifname, bool exact);
1da177e4 454static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 455static void pktgen_run_all_threads(struct pktgen_net *pn);
456static void pktgen_reset_all_threads(struct pktgen_net *pn);
457static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 458
222f1806 459static void pktgen_stop(struct pktgen_thread *t);
1da177e4 460static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 461
1da177e4 462/* Module parameters, defaults. */
65c5b786
SH		 463static int pg_count_d __read_mostly = 1000;
464static int pg_delay_d __read_mostly;
465static int pg_clone_skb_d __read_mostly;
466static int debug __read_mostly;
1da177e4 467
222fa076 468static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 469
1da177e4
LT		 470static struct notifier_block pktgen_notifier_block = {
471 .notifier_call = pktgen_device_event,
472};
473
1da177e4 474/*
4ec93edb 475 * /proc handling functions
1da177e4
LT		 476 *
477 */
478
d50a6b56 479static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 480{
c3d2f52d 481 seq_puts(seq, version);
d50a6b56 482 return 0;
1da177e4
LT		 483}
484
63adc6fb
SH		 485static ssize_t pgctrl_write(struct file *file, const char __user *buf,
486 size_t count, loff_t *ppos)
1da177e4 487{
d50a6b56 488 char data[128];
4e58a027 489 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 490
09455747
MK		 491 if (!capable(CAP_NET_ADMIN))
492 return -EPERM;
1da177e4 493
20b0c718
MK		 494 if (count == 0)
495 return -EINVAL;
496
d50a6b56
SH		 497 if (count > sizeof(data))
498 count = sizeof(data);
1da177e4 499
09455747
MK		 500 if (copy_from_user(data, buf, count))
501 return -EFAULT;
502
20b0c718 503 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
1da177e4 504
222f1806 505 if (!strcmp(data, "stop"))
4e58a027 506 pktgen_stop_all_threads_ifs(pn);
1da177e4 507
222f1806 508 else if (!strcmp(data, "start"))
4e58a027 509 pktgen_run_all_threads(pn);
1da177e4 510
eb37b41c 511 else if (!strcmp(data, "reset"))
4e58a027 512 pktgen_reset_all_threads(pn);
eb37b41c 513
222f1806 514 else
40207264 515 return -EINVAL;
1da177e4 516
09455747 517 return count;
1da177e4
LT		 518}
519
d50a6b56
SH		 520static int pgctrl_open(struct inode *inode, struct file *file)
521{
d9dda78b 522 return single_open(file, pgctrl_show, PDE_DATA(inode));
d50a6b56
SH		 523}
524
9a32144e 525static const struct file_operations pktgen_fops = {
222f1806
LC		 526 .owner = THIS_MODULE,
527 .open = pgctrl_open,
528 .read = seq_read,
529 .llseek = seq_lseek,
530 .write = pgctrl_write,
531 .release = single_release,
d50a6b56
SH		 532};
533
534static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 535{
648fda74 536 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 537 ktime_t stopped;
538 u64 idle;
222f1806
LC		 539
540 seq_printf(seq,
541 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
542 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
543 pkt_dev->max_pkt_size);
544
545 seq_printf(seq,
fd29cf72
SH		 546 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
547 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 548 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 549
550 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
551 pkt_dev->lflow);
552
45b270f8
RO		 553 seq_printf(seq,
554 " queue_map_min: %u queue_map_max: %u\n",
555 pkt_dev->queue_map_min,
556 pkt_dev->queue_map_max);
557
9e50e3ac
JF		 558 if (pkt_dev->skb_priority)
559 seq_printf(seq, " skb_priority: %u\n",
560 pkt_dev->skb_priority);
561
222f1806 562 if (pkt_dev->flags & F_IPV6) {
222f1806 563 seq_printf(seq,
47a0200d
AD		 564 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
565 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
566 &pkt_dev->in6_saddr,
567 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
568 &pkt_dev->in6_daddr,
569 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 570 } else {
571 seq_printf(seq,
572 " dst_min: %s dst_max: %s\n",
573 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 574 seq_printf(seq,
d079abd1 575 " src_min: %s src_max: %s\n",
63adc6fb
SH		 576 pkt_dev->src_min, pkt_dev->src_max);
577 }
1da177e4 578
222f1806 579 seq_puts(seq, " src_mac: ");
1da177e4 580
e174961c
JB		 581 seq_printf(seq, "%pM ",
582 is_zero_ether_addr(pkt_dev->src_mac) ?
583 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806 584
97dc48e2 585 seq_puts(seq, "dst_mac: ");
e174961c 586 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 587
588 seq_printf(seq,
63adc6fb
SH		 589 " udp_src_min: %d udp_src_max: %d"
590 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 591 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
592 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
593
594 seq_printf(seq,
ca6549af 595 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 596 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 597
ca6549af 598 if (pkt_dev->nr_labels) {
95c96174 599 unsigned int i;
97dc48e2 600 seq_puts(seq, " mpls: ");
e71a4783 601 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 602 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
603 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
604 }
605
63adc6fb 606 if (pkt_dev->vlan_id != 0xffff)
34954ddc 607 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 608 pkt_dev->vlan_id, pkt_dev->vlan_p,
609 pkt_dev->vlan_cfi);
34954ddc 610
63adc6fb 611 if (pkt_dev->svlan_id != 0xffff)
34954ddc 612 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 613 pkt_dev->svlan_id, pkt_dev->svlan_p,
614 pkt_dev->svlan_cfi);
34954ddc 615
63adc6fb 616 if (pkt_dev->tos)
1ca7768c 617 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 618
63adc6fb 619 if (pkt_dev->traffic_class)
1ca7768c 620 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 621
38b2cf29
AS		 622 if (pkt_dev->burst > 1)
623 seq_printf(seq, " burst: %d\n", pkt_dev->burst);
624
e99b99b4
RO		 625 if (pkt_dev->node >= 0)
626 seq_printf(seq, " node: %d\n", pkt_dev->node);
627
62f64aed
AS		 628 if (pkt_dev->xmit_mode == M_NETIF_RECEIVE)
629 seq_puts(seq, " xmit_mode: netif_receive\n");
0967f244
JF		 630 else if (pkt_dev->xmit_mode == M_QUEUE_XMIT)
631 seq_puts(seq, " xmit_mode: xmit_queue\n");
62f64aed 632
97dc48e2 633 seq_puts(seq, " Flags: ");
ca6549af 634
222f1806 635 if (pkt_dev->flags & F_IPV6)
97dc48e2 636 seq_puts(seq, "IPV6 ");
1da177e4 637
222f1806 638 if (pkt_dev->flags & F_IPSRC_RND)
97dc48e2 639 seq_puts(seq, "IPSRC_RND ");
1da177e4 640
222f1806 641 if (pkt_dev->flags & F_IPDST_RND)
97dc48e2 642 seq_puts(seq, "IPDST_RND ");
1da177e4 643
222f1806 644 if (pkt_dev->flags & F_TXSIZE_RND)
97dc48e2 645 seq_puts(seq, "TXSIZE_RND ");
1da177e4 646
222f1806 647 if (pkt_dev->flags & F_UDPSRC_RND)
97dc48e2 648 seq_puts(seq, "UDPSRC_RND ");
1da177e4 649
222f1806 650 if (pkt_dev->flags & F_UDPDST_RND)
97dc48e2 651 seq_puts(seq, "UDPDST_RND ");
1da177e4 652
c26bf4a5 653 if (pkt_dev->flags & F_UDPCSUM)
97dc48e2 654 seq_puts(seq, "UDPCSUM ");
c26bf4a5 655
afb84b62
JDB		 656 if (pkt_dev->flags & F_NO_TIMESTAMP)
657 seq_puts(seq, "NO_TIMESTAMP ");
658
ca6549af 659 if (pkt_dev->flags & F_MPLS_RND)
97dc48e2 660 seq_puts(seq, "MPLS_RND ");
ca6549af 661
45b270f8 662 if (pkt_dev->flags & F_QUEUE_MAP_RND)
97dc48e2 663 seq_puts(seq, "QUEUE_MAP_RND ");
45b270f8 664
e6fce5b9 665 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
97dc48e2 666 seq_puts(seq, "QUEUE_MAP_CPU ");
e6fce5b9 667
007a531b
JHS		 668 if (pkt_dev->cflows) {
669 if (pkt_dev->flags & F_FLOW_SEQ)
97dc48e2 670 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
007a531b 671 else
97dc48e2 672 seq_puts(seq, "FLOW_RND ");
007a531b
JHS		 673 }
674
a553e4a6 675#ifdef CONFIG_XFRM
8101328b 676 if (pkt_dev->flags & F_IPSEC_ON) {
97dc48e2 677 seq_puts(seq, "IPSEC ");
8101328b
FD		 678 if (pkt_dev->spi)
679 seq_printf(seq, "spi:%u", pkt_dev->spi);
680 }
a553e4a6
JHS		 681#endif
682
222f1806 683 if (pkt_dev->flags & F_MACSRC_RND)
97dc48e2 684 seq_puts(seq, "MACSRC_RND ");
1da177e4 685
222f1806 686 if (pkt_dev->flags & F_MACDST_RND)
97dc48e2 687 seq_puts(seq, "MACDST_RND ");
1da177e4 688
34954ddc 689 if (pkt_dev->flags & F_VID_RND)
97dc48e2 690 seq_puts(seq, "VID_RND ");
34954ddc
FF		 691
692 if (pkt_dev->flags & F_SVID_RND)
97dc48e2 693 seq_puts(seq, "SVID_RND ");
34954ddc 694
e99b99b4 695 if (pkt_dev->flags & F_NODE)
97dc48e2 696 seq_puts(seq, "NODE_ALLOC ");
e99b99b4 697
222f1806
LC		 698 seq_puts(seq, "\n");
699
fd29cf72 700 /* not really stopped, more like last-running-at */
398f382c 701 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 702 idle = pkt_dev->idle_acc;
703 do_div(idle, NSEC_PER_USEC);
1da177e4 704
222f1806 705 seq_printf(seq,
fd29cf72 706 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 707 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 708 (unsigned long long)pkt_dev->errors);
709
710 seq_printf(seq,
711 " started: %lluus stopped: %lluus idle: %lluus\n",
712 (unsigned long long) ktime_to_us(pkt_dev->started_at),
713 (unsigned long long) ktime_to_us(stopped),
714 (unsigned long long) idle);
1da177e4 715
222f1806
LC		 716 seq_printf(seq,
717 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 718 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
719 pkt_dev->cur_src_mac_offset);
1da177e4 720
222f1806 721 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 722 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
723 &pkt_dev->cur_in6_saddr,
724 &pkt_dev->cur_in6_daddr);
222f1806 725 } else
0373a946
AW		 726 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
727 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 728
222f1806 729 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 730 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 731
45b270f8
RO		 732 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
733
222f1806 734 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 735
736 if (pkt_dev->result[0])
222f1806 737 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 738 else
97dc48e2 739 seq_puts(seq, "Result: Idle\n");
1da177e4 740
d50a6b56 741 return 0;
1da177e4
LT		 742}
743
ca6549af 744
63adc6fb
SH		 745static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
746 __u32 *num)
ca6549af
SW		 747{
748 int i = 0;
749 *num = 0;
750
e71a4783 751 for (; i < maxlen; i++) {
82fd5b5d 752 int value;
ca6549af
SW		 753 char c;
754 *num <<= 4;
755 if (get_user(c, &user_buffer[i]))
756 return -EFAULT;
82fd5b5d
AS		 757 value = hex_to_bin(c);
758 if (value >= 0)
759 *num |= value;
ca6549af
SW		 760 else
761 break;
762 }
763 return i;
764}
765
222f1806
LC		 766static int count_trail_chars(const char __user * user_buffer,
767 unsigned int maxlen)
1da177e4
LT		 768{
769 int i;
770
771 for (i = 0; i < maxlen; i++) {
222f1806
LC		 772 char c;
773 if (get_user(c, &user_buffer[i]))
774 return -EFAULT;
775 switch (c) {
1da177e4
LT		 776 case '\"':
777 case '\n':
778 case '\r':
779 case '\t':
780 case ' ':
781 case '=':
782 break;
783 default:
784 goto done;
3ff50b79 785 }
1da177e4
LT		 786 }
787done:
788 return i;
789}
790
bf0813bd
PG		 791static long num_arg(const char __user *user_buffer, unsigned long maxlen,
792 unsigned long *num)
1da177e4 793{
d6182223 794 int i;
1da177e4 795 *num = 0;
222f1806 796
d6182223 797 for (i = 0; i < maxlen; i++) {
222f1806
LC		 798 char c;
799 if (get_user(c, &user_buffer[i]))
800 return -EFAULT;
801 if ((c >= '0') && (c <= '9')) {
1da177e4 802 *num *= 10;
222f1806 803 *num += c - '0';
1da177e4
LT		 804 } else
805 break;
806 }
807 return i;
808}
809
222f1806 810static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 811{
d6182223 812 int i;
1da177e4 813
d6182223 814 for (i = 0; i < maxlen; i++) {
222f1806
LC		 815 char c;
816 if (get_user(c, &user_buffer[i]))
817 return -EFAULT;
818 switch (c) {
1da177e4
LT		 819 case '\"':
820 case '\n':
821 case '\r':
822 case '\t':
823 case ' ':
824 goto done_str;
1da177e4
LT		 825 default:
826 break;
3ff50b79 827 }
1da177e4
LT		 828 }
829done_str:
1da177e4
LT		 830 return i;
831}
832
ca6549af
SW		 833static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
834{
95c96174 835 unsigned int n = 0;
ca6549af
SW		 836 char c;
837 ssize_t i = 0;
838 int len;
839
840 pkt_dev->nr_labels = 0;
841 do {
842 __u32 tmp;
1ca7768c 843 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 844 if (len <= 0)
845 return len;
846 pkt_dev->labels[n] = htonl(tmp);
847 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
848 pkt_dev->flags |= F_MPLS_RND;
849 i += len;
850 if (get_user(c, &buffer[i]))
851 return -EFAULT;
852 i++;
853 n++;
854 if (n >= MAX_MPLS_LABELS)
855 return -E2BIG;
e71a4783 856 } while (c == ',');
ca6549af
SW		 857
858 pkt_dev->nr_labels = n;
859 return i;
860}
861
222f1806
LC		 862static ssize_t pktgen_if_write(struct file *file,
863 const char __user * user_buffer, size_t count,
864 loff_t * offset)
1da177e4 865{
8a994a71 866 struct seq_file *seq = file->private_data;
222f1806 867 struct pktgen_dev *pkt_dev = seq->private;
d6182223 868 int i, max, len;
1da177e4
LT		 869 char name[16], valstr[32];
870 unsigned long value = 0;
222f1806
LC		 871 char *pg_result = NULL;
872 int tmp = 0;
1da177e4 873 char buf[128];
222f1806
LC		 874
875 pg_result = &(pkt_dev->result[0]);
876
1da177e4 877 if (count < 1) {
294a0b7f 878 pr_warn("wrong command format\n");
1da177e4
LT		 879 return -EINVAL;
880 }
222f1806 881
d6182223
PG		 882 max = count;
883 tmp = count_trail_chars(user_buffer, max);
222f1806 884 if (tmp < 0) {
294a0b7f 885 pr_warn("illegal format\n");
222f1806 886 return tmp;
1da177e4 887 }
d6182223 888 i = tmp;
222f1806 889
1da177e4
LT		 890 /* Read variable name */
891
892 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 893 if (len < 0)
222f1806 894 return len;
63adc6fb 895
1da177e4 896 memset(name, 0, sizeof(name));
222f1806 897 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 898 return -EFAULT;
899 i += len;
222f1806
LC		 900
901 max = count - i;
1da177e4 902 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 903 if (len < 0)
904 return len;
905
1da177e4
LT		 906 i += len;
907
908 if (debug) {
86c2c0a8 909 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 910 char tb[copy + 1];
911 if (copy_from_user(tb, user_buffer, copy))
1da177e4 912 return -EFAULT;
448d7b5d 913 tb[copy] = 0;
f342cda7
JP		 914 pr_debug("%s,%lu buffer -:%s:-\n",
915 name, (unsigned long)count, tb);
222f1806 916 }
1da177e4
LT		 917
918 if (!strcmp(name, "min_pkt_size")) {
919 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 920 if (len < 0)
222f1806 921 return len;
63adc6fb 922
1da177e4 923 i += len;
222f1806
LC		 924 if (value < 14 + 20 + 8)
925 value = 14 + 20 + 8;
926 if (value != pkt_dev->min_pkt_size) {
927 pkt_dev->min_pkt_size = value;
928 pkt_dev->cur_pkt_size = value;
929 }
930 sprintf(pg_result, "OK: min_pkt_size=%u",
931 pkt_dev->min_pkt_size);
1da177e4
LT		 932 return count;
933 }
934
222f1806 935 if (!strcmp(name, "max_pkt_size")) {
1da177e4 936 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 937 if (len < 0)
222f1806 938 return len;
63adc6fb 939
1da177e4 940 i += len;
222f1806
LC		 941 if (value < 14 + 20 + 8)
942 value = 14 + 20 + 8;
943 if (value != pkt_dev->max_pkt_size) {
944 pkt_dev->max_pkt_size = value;
945 pkt_dev->cur_pkt_size = value;
946 }
947 sprintf(pg_result, "OK: max_pkt_size=%u",
948 pkt_dev->max_pkt_size);
1da177e4
LT		 949 return count;
950 }
951
222f1806 952 /* Shortcut for min = max */
1da177e4
LT		 953
954 if (!strcmp(name, "pkt_size")) {
955 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 956 if (len < 0)
222f1806 957 return len;
63adc6fb 958
1da177e4 959 i += len;
222f1806
LC		 960 if (value < 14 + 20 + 8)
961 value = 14 + 20 + 8;
962 if (value != pkt_dev->min_pkt_size) {
963 pkt_dev->min_pkt_size = value;
964 pkt_dev->max_pkt_size = value;
965 pkt_dev->cur_pkt_size = value;
966 }
1da177e4
LT		 967 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
968 return count;
969 }
970
222f1806 971 if (!strcmp(name, "debug")) {
1da177e4 972 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 973 if (len < 0)
222f1806 974 return len;
63adc6fb 975
1da177e4 976 i += len;
222f1806 977 debug = value;
1da177e4
LT		 978 sprintf(pg_result, "OK: debug=%u", debug);
979 return count;
980 }
981
222f1806 982 if (!strcmp(name, "frags")) {
1da177e4 983 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 984 if (len < 0)
222f1806 985 return len;
63adc6fb 986
1da177e4
LT		 987 i += len;
988 pkt_dev->nfrags = value;
989 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
990 return count;
991 }
992 if (!strcmp(name, "delay")) {
993 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 994 if (len < 0)
222f1806 995 return len;
63adc6fb 996
1da177e4 997 i += len;
fd29cf72
SH		 998 if (value == 0x7FFFFFFF)
999 pkt_dev->delay = ULLONG_MAX;
1000 else
9240d715 1001 pkt_dev->delay = (u64)value;
fd29cf72
SH		 1002
1003 sprintf(pg_result, "OK: delay=%llu",
1004 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 1005 return count;
1006 }
43d28b65
DT		 1007 if (!strcmp(name, "rate")) {
1008 len = num_arg(&user_buffer[i], 10, &value);
1009 if (len < 0)
1010 return len;
1011
1012 i += len;
1013 if (!value)
1014 return len;
1015 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
1016 if (debug)
f9467eae 1017 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1018
1019 sprintf(pg_result, "OK: rate=%lu", value);
1020 return count;
1021 }
1022 if (!strcmp(name, "ratep")) {
1023 len = num_arg(&user_buffer[i], 10, &value);
1024 if (len < 0)
1025 return len;
1026
1027 i += len;
1028 if (!value)
1029 return len;
1030 pkt_dev->delay = NSEC_PER_SEC/value;
1031 if (debug)
f9467eae 1032 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1033
1034 sprintf(pg_result, "OK: rate=%lu", value);
1035 return count;
1036 }
222f1806 1037 if (!strcmp(name, "udp_src_min")) {
1da177e4 1038 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1039 if (len < 0)
222f1806 1040 return len;
63adc6fb 1041
1da177e4 1042 i += len;
222f1806
LC		 1043 if (value != pkt_dev->udp_src_min) {
1044 pkt_dev->udp_src_min = value;
1045 pkt_dev->cur_udp_src = value;
1046 }
1da177e4
LT		 1047 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1048 return count;
1049 }
222f1806 1050 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1051 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1052 if (len < 0)
222f1806 1053 return len;
63adc6fb 1054
1da177e4 1055 i += len;
222f1806
LC		 1056 if (value != pkt_dev->udp_dst_min) {
1057 pkt_dev->udp_dst_min = value;
1058 pkt_dev->cur_udp_dst = value;
1059 }
1da177e4
LT		 1060 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1061 return count;
1062 }
222f1806 1063 if (!strcmp(name, "udp_src_max")) {
1da177e4 1064 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1065 if (len < 0)
222f1806 1066 return len;
63adc6fb 1067
1da177e4 1068 i += len;
222f1806
LC		 1069 if (value != pkt_dev->udp_src_max) {
1070 pkt_dev->udp_src_max = value;
1071 pkt_dev->cur_udp_src = value;
1072 }
1da177e4
LT		 1073 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1074 return count;
1075 }
222f1806 1076 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1077 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1078 if (len < 0)
222f1806 1079 return len;
63adc6fb 1080
1da177e4 1081 i += len;
222f1806
LC		 1082 if (value != pkt_dev->udp_dst_max) {
1083 pkt_dev->udp_dst_max = value;
1084 pkt_dev->cur_udp_dst = value;
1085 }
1da177e4
LT		 1086 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1087 return count;
1088 }
1089 if (!strcmp(name, "clone_skb")) {
1090 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1091 if (len < 0)
222f1806 1092 return len;
d8873315 1093 if ((value > 0) &&
62f64aed
AS		 1094 ((pkt_dev->xmit_mode == M_NETIF_RECEIVE) ||
1095 !(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
d8873315 1096 return -ENOTSUPP;
1da177e4 1097 i += len;
222f1806
LC		 1098 pkt_dev->clone_skb = value;
1099
1da177e4
LT		 1100 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1101 return count;
1102 }
1103 if (!strcmp(name, "count")) {
1104 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1105 if (len < 0)
222f1806 1106 return len;
63adc6fb 1107
1da177e4
LT		 1108 i += len;
1109 pkt_dev->count = value;
1110 sprintf(pg_result, "OK: count=%llu",
222f1806 1111 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1112 return count;
1113 }
1114 if (!strcmp(name, "src_mac_count")) {
1115 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1116 if (len < 0)
222f1806 1117 return len;
63adc6fb 1118
1da177e4
LT		 1119 i += len;
1120 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1121 pkt_dev->src_mac_count = value;
1122 pkt_dev->cur_src_mac_offset = 0;
1123 }
1124 sprintf(pg_result, "OK: src_mac_count=%d",
1125 pkt_dev->src_mac_count);
1da177e4
LT		 1126 return count;
1127 }
1128 if (!strcmp(name, "dst_mac_count")) {
1129 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1130 if (len < 0)
222f1806 1131 return len;
63adc6fb 1132
1da177e4
LT		 1133 i += len;
1134 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1135 pkt_dev->dst_mac_count = value;
1136 pkt_dev->cur_dst_mac_offset = 0;
1137 }
1138 sprintf(pg_result, "OK: dst_mac_count=%d",
1139 pkt_dev->dst_mac_count);
1da177e4
LT		 1140 return count;
1141 }
38b2cf29
AS		 1142 if (!strcmp(name, "burst")) {
1143 len = num_arg(&user_buffer[i], 10, &value);
1144 if (len < 0)
1145 return len;
1146
1147 i += len;
0967f244
JF		 1148 if ((value > 1) &&
1149 ((pkt_dev->xmit_mode == M_QUEUE_XMIT) ||
1150 ((pkt_dev->xmit_mode == M_START_XMIT) &&
1151 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))))
52d6c8c6 1152 return -ENOTSUPP;
38b2cf29
AS		 1153 pkt_dev->burst = value < 1 ? 1 : value;
1154 sprintf(pg_result, "OK: burst=%d", pkt_dev->burst);
1155 return count;
1156 }
e99b99b4
RO		 1157 if (!strcmp(name, "node")) {
1158 len = num_arg(&user_buffer[i], 10, &value);
1159 if (len < 0)
1160 return len;
1161
1162 i += len;
1163
1164 if (node_possible(value)) {
1165 pkt_dev->node = value;
1166 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1167 if (pkt_dev->page) {
1168 put_page(pkt_dev->page);
1169 pkt_dev->page = NULL;
1170 }
e99b99b4
RO		 1171 }
1172 else
1173 sprintf(pg_result, "ERROR: node not possible");
1174 return count;
1175 }
62f64aed
AS		 1176 if (!strcmp(name, "xmit_mode")) {
1177 char f[32];
1178
1179 memset(f, 0, 32);
1180 len = strn_len(&user_buffer[i], sizeof(f) - 1);
1181 if (len < 0)
1182 return len;
1183
1184 if (copy_from_user(f, &user_buffer[i], len))
1185 return -EFAULT;
1186 i += len;
1187
1188 if (strcmp(f, "start_xmit") == 0) {
1189 pkt_dev->xmit_mode = M_START_XMIT;
1190 } else if (strcmp(f, "netif_receive") == 0) {
1191 /* clone_skb set earlier, not supported in this mode */
1192 if (pkt_dev->clone_skb > 0)
1193 return -ENOTSUPP;
1194
1195 pkt_dev->xmit_mode = M_NETIF_RECEIVE;
9eea9222
AS		 1196
1197 /* make sure new packet is allocated every time
1198 * pktgen_xmit() is called
1199 */
1200 pkt_dev->last_ok = 1;
1201
1202 /* override clone_skb if user passed default value
1203 * at module loading time
1204 */
1205 pkt_dev->clone_skb = 0;
0967f244
JF		 1206 } else if (strcmp(f, "queue_xmit") == 0) {
1207 pkt_dev->xmit_mode = M_QUEUE_XMIT;
1208 pkt_dev->last_ok = 1;
62f64aed
AS		 1209 } else {
1210 sprintf(pg_result,
1211 "xmit_mode -:%s:- unknown\nAvailable modes: %s",
1212 f, "start_xmit, netif_receive\n");
1213 return count;
1214 }
1215 sprintf(pg_result, "OK: xmit_mode=%s", f);
1216 return count;
1217 }
1da177e4 1218 if (!strcmp(name, "flag")) {
222f1806
LC		 1219 char f[32];
1220 memset(f, 0, 32);
1da177e4 1221 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1222 if (len < 0)
222f1806 1223 return len;
63adc6fb 1224
1da177e4
LT		 1225 if (copy_from_user(f, &user_buffer[i], len))
1226 return -EFAULT;
1227 i += len;
222f1806
LC		 1228 if (strcmp(f, "IPSRC_RND") == 0)
1229 pkt_dev->flags |= F_IPSRC_RND;
1230
1231 else if (strcmp(f, "!IPSRC_RND") == 0)
1232 pkt_dev->flags &= ~F_IPSRC_RND;
1233
1234 else if (strcmp(f, "TXSIZE_RND") == 0)
1235 pkt_dev->flags |= F_TXSIZE_RND;
1236
1237 else if (strcmp(f, "!TXSIZE_RND") == 0)
1238 pkt_dev->flags &= ~F_TXSIZE_RND;
1239
1240 else if (strcmp(f, "IPDST_RND") == 0)
1241 pkt_dev->flags |= F_IPDST_RND;
1242
1243 else if (strcmp(f, "!IPDST_RND") == 0)
1244 pkt_dev->flags &= ~F_IPDST_RND;
1245
1246 else if (strcmp(f, "UDPSRC_RND") == 0)
1247 pkt_dev->flags |= F_UDPSRC_RND;
1248
1249 else if (strcmp(f, "!UDPSRC_RND") == 0)
1250 pkt_dev->flags &= ~F_UDPSRC_RND;
1251
1252 else if (strcmp(f, "UDPDST_RND") == 0)
1253 pkt_dev->flags |= F_UDPDST_RND;
1254
1255 else if (strcmp(f, "!UDPDST_RND") == 0)
1256 pkt_dev->flags &= ~F_UDPDST_RND;
1257
1258 else if (strcmp(f, "MACSRC_RND") == 0)
1259 pkt_dev->flags |= F_MACSRC_RND;
1260
1261 else if (strcmp(f, "!MACSRC_RND") == 0)
1262 pkt_dev->flags &= ~F_MACSRC_RND;
1263
1264 else if (strcmp(f, "MACDST_RND") == 0)
1265 pkt_dev->flags |= F_MACDST_RND;
1266
1267 else if (strcmp(f, "!MACDST_RND") == 0)
1268 pkt_dev->flags &= ~F_MACDST_RND;
1269
ca6549af
SW		 1270 else if (strcmp(f, "MPLS_RND") == 0)
1271 pkt_dev->flags |= F_MPLS_RND;
1272
1273 else if (strcmp(f, "!MPLS_RND") == 0)
1274 pkt_dev->flags &= ~F_MPLS_RND;
1275
34954ddc
FF		 1276 else if (strcmp(f, "VID_RND") == 0)
1277 pkt_dev->flags |= F_VID_RND;
1278
1279 else if (strcmp(f, "!VID_RND") == 0)
1280 pkt_dev->flags &= ~F_VID_RND;
1281
1282 else if (strcmp(f, "SVID_RND") == 0)
1283 pkt_dev->flags |= F_SVID_RND;
1284
1285 else if (strcmp(f, "!SVID_RND") == 0)
1286 pkt_dev->flags &= ~F_SVID_RND;
1287
007a531b
JHS		 1288 else if (strcmp(f, "FLOW_SEQ") == 0)
1289 pkt_dev->flags |= F_FLOW_SEQ;
1290
45b270f8
RO		 1291 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1292 pkt_dev->flags |= F_QUEUE_MAP_RND;
1293
1294 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1295 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1296
1297 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1298 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1299
1300 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1301 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1302#ifdef CONFIG_XFRM
1303 else if (strcmp(f, "IPSEC") == 0)
1304 pkt_dev->flags |= F_IPSEC_ON;
1305#endif
1306
1ca7768c
FF		 1307 else if (strcmp(f, "!IPV6") == 0)
1308 pkt_dev->flags &= ~F_IPV6;
1309
e99b99b4
RO		 1310 else if (strcmp(f, "NODE_ALLOC") == 0)
1311 pkt_dev->flags |= F_NODE;
1312
1313 else if (strcmp(f, "!NODE_ALLOC") == 0)
1314 pkt_dev->flags &= ~F_NODE;
1315
c26bf4a5
TG		 1316 else if (strcmp(f, "UDPCSUM") == 0)
1317 pkt_dev->flags |= F_UDPCSUM;
1318
1319 else if (strcmp(f, "!UDPCSUM") == 0)
1320 pkt_dev->flags &= ~F_UDPCSUM;
1321
afb84b62
JDB		 1322 else if (strcmp(f, "NO_TIMESTAMP") == 0)
1323 pkt_dev->flags |= F_NO_TIMESTAMP;
1324
f1f00d8f
JDB		 1325 else if (strcmp(f, "!NO_TIMESTAMP") == 0)
1326 pkt_dev->flags &= ~F_NO_TIMESTAMP;
1327
222f1806
LC		 1328 else {
1329 sprintf(pg_result,
1330 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1331 f,
1ca7768c 1332 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
72f8e06f
MK		 1333 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1334 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1335 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
afb84b62 1336 "NO_TIMESTAMP, "
72f8e06f
MK		 1337#ifdef CONFIG_XFRM
1338 "IPSEC, "
1339#endif
1340 "NODE_ALLOC\n");
222f1806
LC		 1341 return count;
1342 }
1da177e4
LT		 1343 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1344 return count;
1345 }
1346 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1347 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1348 if (len < 0)
222f1806 1349 return len;
1da177e4 1350
222f1806 1351 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1352 return -EFAULT;
222f1806
LC		 1353 buf[len] = 0;
1354 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1355 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1356 strncpy(pkt_dev->dst_min, buf, len);
1357 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1358 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1359 }
1360 if (debug)
f342cda7 1361 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1362 i += len;
1da177e4
LT		 1363 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1364 return count;
1365 }
1366 if (!strcmp(name, "dst_max")) {
1367 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1368 if (len < 0)
222f1806 1369 return len;
63adc6fb 1370
1da177e4 1371
222f1806 1372 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1373 return -EFAULT;
1374
222f1806
LC		 1375 buf[len] = 0;
1376 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1377 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1378 strncpy(pkt_dev->dst_max, buf, len);
1379 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1380 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1381 }
1382 if (debug)
f342cda7 1383 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1384 i += len;
1385 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1386 return count;
1387 }
1388 if (!strcmp(name, "dst6")) {
1389 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1390 if (len < 0)
1391 return len;
1da177e4
LT		 1392
1393 pkt_dev->flags |= F_IPV6;
1394
222f1806 1395 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1396 return -EFAULT;
222f1806 1397 buf[len] = 0;
1da177e4 1398
c468fb13 1399 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1400 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1401
4e3fd7a0 1402 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1403
222f1806 1404 if (debug)
f342cda7 1405 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1406
222f1806 1407 i += len;
1da177e4
LT		 1408 sprintf(pg_result, "OK: dst6=%s", buf);
1409 return count;
1410 }
1411 if (!strcmp(name, "dst6_min")) {
1412 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1413 if (len < 0)
1414 return len;
1da177e4
LT		 1415
1416 pkt_dev->flags |= F_IPV6;
1417
222f1806 1418 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1419 return -EFAULT;
222f1806 1420 buf[len] = 0;
1da177e4 1421
c468fb13 1422 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1423 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1424
4e3fd7a0 1425 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1426 if (debug)
f342cda7 1427 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1428
222f1806 1429 i += len;
1da177e4
LT		 1430 sprintf(pg_result, "OK: dst6_min=%s", buf);
1431 return count;
1432 }
1433 if (!strcmp(name, "dst6_max")) {
1434 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1435 if (len < 0)
1436 return len;
1da177e4
LT		 1437
1438 pkt_dev->flags |= F_IPV6;
1439
222f1806 1440 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1441 return -EFAULT;
222f1806 1442 buf[len] = 0;
1da177e4 1443
c468fb13 1444 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1445 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1446
222f1806 1447 if (debug)
f342cda7 1448 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1449
222f1806 1450 i += len;
1da177e4
LT		 1451 sprintf(pg_result, "OK: dst6_max=%s", buf);
1452 return count;
1453 }
1454 if (!strcmp(name, "src6")) {
1455 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1456 if (len < 0)
1457 return len;
1da177e4
LT		 1458
1459 pkt_dev->flags |= F_IPV6;
1460
222f1806 1461 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1462 return -EFAULT;
222f1806 1463 buf[len] = 0;
1da177e4 1464
c468fb13 1465 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1466 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1467
4e3fd7a0 1468 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1469
222f1806 1470 if (debug)
f342cda7 1471 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1472
1473 i += len;
1da177e4
LT		 1474 sprintf(pg_result, "OK: src6=%s", buf);
1475 return count;
1476 }
1477 if (!strcmp(name, "src_min")) {
1478 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1479 if (len < 0)
222f1806 1480 return len;
63adc6fb 1481
222f1806 1482 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1483 return -EFAULT;
222f1806
LC		 1484 buf[len] = 0;
1485 if (strcmp(buf, pkt_dev->src_min) != 0) {
1486 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1487 strncpy(pkt_dev->src_min, buf, len);
1488 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1489 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1490 }
1491 if (debug)
f342cda7 1492 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1493 i += len;
1494 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1495 return count;
1496 }
1497 if (!strcmp(name, "src_max")) {
1498 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1499 if (len < 0)
222f1806 1500 return len;
63adc6fb 1501
222f1806 1502 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1503 return -EFAULT;
222f1806
LC		 1504 buf[len] = 0;
1505 if (strcmp(buf, pkt_dev->src_max) != 0) {
1506 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1507 strncpy(pkt_dev->src_max, buf, len);
1508 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1509 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1510 }
1511 if (debug)
f342cda7 1512 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1513 i += len;
1514 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1515 return count;
1516 }
1517 if (!strcmp(name, "dst_mac")) {
1da177e4 1518 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1519 if (len < 0)
222f1806 1520 return len;
63adc6fb 1521
1da177e4 1522 memset(valstr, 0, sizeof(valstr));
222f1806 1523 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1524 return -EFAULT;
1da177e4 1525
4940fc88
AD		 1526 if (!mac_pton(valstr, pkt_dev->dst_mac))
1527 return -EINVAL;
1da177e4 1528 /* Set up Dest MAC */
9ea08b12 1529 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
222f1806 1530
4940fc88 1531 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1532 return count;
1533 }
1534 if (!strcmp(name, "src_mac")) {
1da177e4 1535 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1536 if (len < 0)
222f1806 1537 return len;
63adc6fb 1538
1da177e4 1539 memset(valstr, 0, sizeof(valstr));
222f1806 1540 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1541 return -EFAULT;
1da177e4 1542
4940fc88
AD		 1543 if (!mac_pton(valstr, pkt_dev->src_mac))
1544 return -EINVAL;
ce5d0b47 1545 /* Set up Src MAC */
9ea08b12 1546 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
ce5d0b47 1547
4940fc88 1548 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1549 return count;
1550 }
1551
222f1806
LC		 1552 if (!strcmp(name, "clear_counters")) {
1553 pktgen_clear_counters(pkt_dev);
1554 sprintf(pg_result, "OK: Clearing counters.\n");
1555 return count;
1556 }
1da177e4
LT		 1557
1558 if (!strcmp(name, "flows")) {
1559 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1560 if (len < 0)
222f1806 1561 return len;
63adc6fb 1562
1da177e4
LT		 1563 i += len;
1564 if (value > MAX_CFLOWS)
1565 value = MAX_CFLOWS;
1566
1567 pkt_dev->cflows = value;
1568 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1569 return count;
1570 }
6bae9190 1571#ifdef CONFIG_XFRM
de4aee7d
FD		 1572 if (!strcmp(name, "spi")) {
1573 len = num_arg(&user_buffer[i], 10, &value);
1574 if (len < 0)
1575 return len;
1576
1577 i += len;
1578 pkt_dev->spi = value;
1579 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1580 return count;
1581 }
6bae9190 1582#endif
1da177e4
LT		 1583 if (!strcmp(name, "flowlen")) {
1584 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1585 if (len < 0)
222f1806 1586 return len;
63adc6fb 1587
1da177e4
LT		 1588 i += len;
1589 pkt_dev->lflow = value;
1590 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1591 return count;
1592 }
222f1806 1593
45b270f8
RO		 1594 if (!strcmp(name, "queue_map_min")) {
1595 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1596 if (len < 0)
45b270f8 1597 return len;
63adc6fb 1598
45b270f8
RO		 1599 i += len;
1600 pkt_dev->queue_map_min = value;
1601 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1602 return count;
1603 }
1604
1605 if (!strcmp(name, "queue_map_max")) {
1606 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1607 if (len < 0)
45b270f8 1608 return len;
63adc6fb 1609
45b270f8
RO		 1610 i += len;
1611 pkt_dev->queue_map_max = value;
1612 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1613 return count;
1614 }
1615
ca6549af 1616 if (!strcmp(name, "mpls")) {
95c96174 1617 unsigned int n, cnt;
cfcabdcc 1618
ca6549af 1619 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1620 if (len < 0)
1621 return len;
ca6549af 1622 i += len;
cfcabdcc 1623 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1624 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1625 cnt += sprintf(pg_result + cnt,
1626 "%08x%s", ntohl(pkt_dev->labels[n]),
1627 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1628
1629 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1630 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1631 pkt_dev->svlan_id = 0xffff;
1632
1633 if (debug)
f342cda7 1634 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1635 }
1636 return count;
1637 }
1638
1639 if (!strcmp(name, "vlan_id")) {
1640 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1641 if (len < 0)
34954ddc 1642 return len;
63adc6fb 1643
34954ddc
FF		 1644 i += len;
1645 if (value <= 4095) {
1646 pkt_dev->vlan_id = value; /* turn on VLAN */
1647
1648 if (debug)
f342cda7 1649 pr_debug("VLAN turned on\n");
34954ddc
FF		 1650
1651 if (debug && pkt_dev->nr_labels)
f342cda7 1652 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1653
1654 pkt_dev->nr_labels = 0; /* turn off MPLS */
1655 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1656 } else {
1657 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1658 pkt_dev->svlan_id = 0xffff;
1659
1660 if (debug)
f342cda7 1661 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1662 }
1663 return count;
1664 }
1665
1666 if (!strcmp(name, "vlan_p")) {
1667 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1668 if (len < 0)
34954ddc 1669 return len;
63adc6fb 1670
34954ddc
FF		 1671 i += len;
1672 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1673 pkt_dev->vlan_p = value;
1674 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1675 } else {
1676 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1677 }
1678 return count;
1679 }
1680
1681 if (!strcmp(name, "vlan_cfi")) {
1682 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1683 if (len < 0)
34954ddc 1684 return len;
63adc6fb 1685
34954ddc
FF		 1686 i += len;
1687 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1688 pkt_dev->vlan_cfi = value;
1689 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1690 } else {
1691 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1692 }
1693 return count;
1694 }
1695
1696 if (!strcmp(name, "svlan_id")) {
1697 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1698 if (len < 0)
34954ddc 1699 return len;
63adc6fb 1700
34954ddc
FF		 1701 i += len;
1702 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1703 pkt_dev->svlan_id = value; /* turn on SVLAN */
1704
1705 if (debug)
f342cda7 1706 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1707
1708 if (debug && pkt_dev->nr_labels)
f342cda7 1709 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1710
1711 pkt_dev->nr_labels = 0; /* turn off MPLS */
1712 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1713 } else {
1714 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1715 pkt_dev->svlan_id = 0xffff;
1716
1717 if (debug)
f342cda7 1718 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1719 }
1720 return count;
1721 }
1722
1723 if (!strcmp(name, "svlan_p")) {
1724 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1725 if (len < 0)
34954ddc 1726 return len;
63adc6fb 1727
34954ddc
FF		 1728 i += len;
1729 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1730 pkt_dev->svlan_p = value;
1731 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1732 } else {
1733 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1734 }
1735 return count;
1736 }
1737
1738 if (!strcmp(name, "svlan_cfi")) {
1739 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1740 if (len < 0)
34954ddc 1741 return len;
63adc6fb 1742
34954ddc
FF		 1743 i += len;
1744 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1745 pkt_dev->svlan_cfi = value;
1746 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1747 } else {
1748 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1749 }
ca6549af
SW		 1750 return count;
1751 }
1752
1ca7768c
FF		 1753 if (!strcmp(name, "tos")) {
1754 __u32 tmp_value = 0;
1755 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1756 if (len < 0)
1ca7768c 1757 return len;
63adc6fb 1758
1ca7768c
FF		 1759 i += len;
1760 if (len == 2) {
1761 pkt_dev->tos = tmp_value;
1762 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1763 } else {
1764 sprintf(pg_result, "ERROR: tos must be 00-ff");
1765 }
1766 return count;
1767 }
1768
1769 if (!strcmp(name, "traffic_class")) {
1770 __u32 tmp_value = 0;
1771 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1772 if (len < 0)
1ca7768c 1773 return len;
63adc6fb 1774
1ca7768c
FF		 1775 i += len;
1776 if (len == 2) {
1777 pkt_dev->traffic_class = tmp_value;
1778 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1779 } else {
1780 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1781 }
1782 return count;
1783 }
1784
9e50e3ac
JF		 1785 if (!strcmp(name, "skb_priority")) {
1786 len = num_arg(&user_buffer[i], 9, &value);
1787 if (len < 0)
1788 return len;
1789
1790 i += len;
1791 pkt_dev->skb_priority = value;
1792 sprintf(pg_result, "OK: skb_priority=%i",
1793 pkt_dev->skb_priority);
1794 return count;
1795 }
1796
1da177e4
LT		 1797 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1798 return -EINVAL;
1799}
1800
d50a6b56 1801static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1802{
d9dda78b 1803 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1804}
1da177e4 1805
9a32144e 1806static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1807 .owner = THIS_MODULE,
1808 .open = pktgen_if_open,
1809 .read = seq_read,
1810 .llseek = seq_lseek,
1811 .write = pktgen_if_write,
1812 .release = single_release,
d50a6b56 1813};
1da177e4 1814
d50a6b56
SH		 1815static int pktgen_thread_show(struct seq_file *seq, void *v)
1816{
222f1806 1817 struct pktgen_thread *t = seq->private;
648fda74 1818 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1819
1820 BUG_ON(!t);
1da177e4 1821
97dc48e2 1822 seq_puts(seq, "Running: ");
1da177e4 1823
8788370a
JDB		 1824 rcu_read_lock();
1825 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1826 if (pkt_dev->running)
593f63b0 1827 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1828
97dc48e2 1829 seq_puts(seq, "\nStopped: ");
222f1806 1830
8788370a 1831 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1832 if (!pkt_dev->running)
593f63b0 1833 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1834
1835 if (t->result[0])
d50a6b56 1836 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1837 else
97dc48e2 1838 seq_puts(seq, "\nResult: NA\n");
1da177e4 1839
8788370a 1840 rcu_read_unlock();
1da177e4 1841
d50a6b56 1842 return 0;
1da177e4
LT		 1843}
1844
d50a6b56 1845static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1846 const char __user * user_buffer,
1847 size_t count, loff_t * offset)
1da177e4 1848{
8a994a71 1849 struct seq_file *seq = file->private_data;
222f1806 1850 struct pktgen_thread *t = seq->private;
d6182223 1851 int i, max, len, ret;
1da177e4 1852 char name[40];
222f1806 1853 char *pg_result;
d50a6b56 1854
1da177e4 1855 if (count < 1) {
222f1806 1856 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1857 return -EINVAL;
1858 }
d50a6b56 1859
d6182223
PG		 1860 max = count;
1861 len = count_trail_chars(user_buffer, max);
222f1806 1862 if (len < 0)
d50a6b56
SH		 1863 return len;
1864
d6182223 1865 i = len;
d50a6b56 1866
1da177e4
LT		 1867 /* Read variable name */
1868
1869 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1870 if (len < 0)
d50a6b56 1871 return len;
222f1806 1872
1da177e4
LT		 1873 memset(name, 0, sizeof(name));
1874 if (copy_from_user(name, &user_buffer[i], len))
1875 return -EFAULT;
1876 i += len;
d50a6b56 1877
222f1806 1878 max = count - i;
1da177e4 1879 len = count_trail_chars(&user_buffer[i], max);
222f1806 1880 if (len < 0)
d50a6b56
SH		 1881 return len;
1882
1da177e4
LT		 1883 i += len;
1884
d50a6b56 1885 if (debug)
f342cda7 1886 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1887
222f1806 1888 if (!t) {
f9467eae 1889 pr_err("ERROR: No thread\n");
1da177e4
LT		 1890 ret = -EINVAL;
1891 goto out;
1892 }
1893
1894 pg_result = &(t->result[0]);
1895
222f1806
LC		 1896 if (!strcmp(name, "add_device")) {
1897 char f[32];
1898 memset(f, 0, 32);
1da177e4 1899 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1900 if (len < 0) {
1901 ret = len;
1da177e4
LT		 1902 goto out;
1903 }
222f1806 1904 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1905 return -EFAULT;
1906 i += len;
6146e6a4 1907 mutex_lock(&pktgen_thread_lock);
604dfd6e 1908 ret = pktgen_add_device(t, f);
6146e6a4 1909 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1910 if (!ret) {
1911 ret = count;
1912 sprintf(pg_result, "OK: add_device=%s", f);
1913 } else
1914 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1915 goto out;
1916 }
1917
222f1806 1918 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1919 mutex_lock(&pktgen_thread_lock);
95ed63f7 1920 t->control |= T_REMDEVALL;
6146e6a4 1921 mutex_unlock(&pktgen_thread_lock);
222f1806 1922 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1923 ret = count;
222f1806 1924 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1925 goto out;
1926 }
1927
222f1806 1928 if (!strcmp(name, "max_before_softirq")) {
b163911f 1929 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1930 ret = count;
1da177e4
LT		 1931 goto out;
1932 }
1933
1934 ret = -EINVAL;
222f1806 1935out:
1da177e4
LT		 1936 return ret;
1937}
1938
d50a6b56 1939static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1940{
d9dda78b 1941 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT		 1942}
1943
9a32144e 1944static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1945 .owner = THIS_MODULE,
1946 .open = pktgen_thread_open,
1947 .read = seq_read,
1948 .llseek = seq_lseek,
1949 .write = pktgen_thread_write,
1950 .release = single_release,
d50a6b56 1951};
1da177e4
LT		 1952
1953/* Think find or remove for NN */
4e58a027
CW		 1954static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1955 const char *ifname, int remove)
1da177e4
LT		 1956{
1957 struct pktgen_thread *t;
1958 struct pktgen_dev *pkt_dev = NULL;
3e984840 1959 bool exact = (remove == FIND);
1da177e4 1960
4e58a027 1961 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1962 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1963 if (pkt_dev) {
222f1806 1964 if (remove) {
222f1806
LC		 1965 pkt_dev->removal_mark = 1;
1966 t->control |= T_REMDEV;
222f1806 1967 }
1da177e4
LT		 1968 break;
1969 }
1da177e4 1970 }
222f1806 1971 return pkt_dev;
1da177e4
LT		 1972}
1973
95ed63f7
AK		 1974/*
1975 * mark a device for removal
1976 */
4e58a027 1977static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1978{
1979 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1980 const int max_tries = 10, msec_per_try = 125;
1981 int i = 0;
95ed63f7 1982
6146e6a4 1983 mutex_lock(&pktgen_thread_lock);
f9467eae 1984 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1985
222f1806 1986 while (1) {
95ed63f7 1987
4e58a027 1988 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1989 if (pkt_dev == NULL)
1990 break; /* success */
95ed63f7 1991
6146e6a4 1992 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1993 pr_debug("%s: waiting for %s to disappear....\n",
1994 __func__, ifname);
95ed63f7 1995 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1996 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1997
1998 if (++i >= max_tries) {
f9467eae
JP		 1999 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
2000 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 2001 break;
2002 }
2003
2004 }
2005
6146e6a4 2006 mutex_unlock(&pktgen_thread_lock);
39df232f 2007}
95ed63f7 2008
4e58a027 2009static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 2010{
2011 struct pktgen_thread *t;
2012
4e58a027 2013 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 2014 struct pktgen_dev *pkt_dev;
2015
8788370a
JDB		 2016 rcu_read_lock();
2017 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
39df232f
SH		 2018 if (pkt_dev->odev != dev)
2019 continue;
2020
a8ca16ea 2021 proc_remove(pkt_dev->entry);
39df232f 2022
2975315b 2023 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 2024 pn->proc_dir,
2975315b
AD		 2025 &pktgen_if_fops,
2026 pkt_dev);
39df232f 2027 if (!pkt_dev->entry)
f9467eae
JP		 2028 pr_err("can't move proc entry for '%s'\n",
2029 dev->name);
39df232f
SH		 2030 break;
2031 }
8788370a 2032 rcu_read_unlock();
39df232f 2033 }
1da177e4
LT		 2034}
2035
222f1806
LC		 2036static int pktgen_device_event(struct notifier_block *unused,
2037 unsigned long event, void *ptr)
1da177e4 2038{
351638e7 2039 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 2040 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 2041
4e58a027 2042 if (pn->pktgen_exiting)
e9dc8653
EB		 2043 return NOTIFY_DONE;
2044
1da177e4
LT		 2045 /* It is OK that we do not hold the group lock right now,
2046 * as we run under the RTNL lock.
2047 */
2048
2049 switch (event) {
39df232f 2050 case NETDEV_CHANGENAME:
4e58a027 2051 pktgen_change_name(pn, dev);
1da177e4 2052 break;
222f1806 2053
1da177e4 2054 case NETDEV_UNREGISTER:
4e58a027 2055 pktgen_mark_device(pn, dev->name);
1da177e4 2056 break;
3ff50b79 2057 }
1da177e4
LT		 2058
2059 return NOTIFY_DONE;
2060}
2061
4e58a027
CW		 2062static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
2063 struct pktgen_dev *pkt_dev,
63adc6fb 2064 const char *ifname)
e6fce5b9
RO		 2065{
2066 char b[IFNAMSIZ+5];
d6182223 2067 int i;
e6fce5b9 2068
63adc6fb
SH		 2069 for (i = 0; ifname[i] != '@'; i++) {
2070 if (i == IFNAMSIZ)
e6fce5b9
RO		 2071 break;
2072
2073 b[i] = ifname[i];
2074 }
2075 b[i] = 0;
2076
4e58a027 2077 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 2078}
2079
2080
1da177e4
LT		 2081/* Associate pktgen_dev with a device. */
2082
4e58a027
CW		 2083static int pktgen_setup_dev(const struct pktgen_net *pn,
2084 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2085{
1da177e4 2086 struct net_device *odev;
39df232f 2087 int err;
1da177e4
LT		 2088
2089 /* Clean old setups */
1da177e4
LT		 2090 if (pkt_dev->odev) {
2091 dev_put(pkt_dev->odev);
222f1806
LC		 2092 pkt_dev->odev = NULL;
2093 }
1da177e4 2094
4e58a027 2095 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 2096 if (!odev) {
f9467eae 2097 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2098 return -ENODEV;
1da177e4 2099 }
39df232f 2100
1da177e4 2101 if (odev->type != ARPHRD_ETHER) {
f9467eae 2102 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2103 err = -EINVAL;
2104 } else if (!netif_running(odev)) {
f9467eae 2105 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2106 err = -ENETDOWN;
2107 } else {
2108 pkt_dev->odev = odev;
2109 return 0;
1da177e4 2110 }
1da177e4 2111
1da177e4 2112 dev_put(odev);
39df232f 2113 return err;
1da177e4
LT		 2114}
2115
2116/* Read pkt_dev from the interface and set up internal pktgen_dev
2117 * structure to have the right information to create/send packets
2118 */
2119static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2120{
64c00d81
AG		 2121 int ntxq;
2122
222f1806 2123 if (!pkt_dev->odev) {
f9467eae 2124 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2125 sprintf(pkt_dev->result,
2126 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2127 return;
2128 }
2129
64c00d81
AG		 2130 /* make sure that we don't pick a non-existing transmit queue */
2131 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2132
64c00d81 2133 if (ntxq <= pkt_dev->queue_map_min) {
294a0b7f
JP		 2134 pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2135 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2136 pkt_dev->odevname);
26e29eed 2137 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2138 }
88271660 2139 if (pkt_dev->queue_map_max >= ntxq) {
294a0b7f
JP		 2140 pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2141 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2142 pkt_dev->odevname);
26e29eed 2143 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2144 }
2145
222f1806 2146 /* Default to the interface's mac if not explicitly set. */
1da177e4 2147
f404e9a6 2148 if (is_zero_ether_addr(pkt_dev->src_mac))
9ea08b12 2149 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
1da177e4 2150
222f1806 2151 /* Set up Dest MAC */
9ea08b12 2152 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
1da177e4 2153
222f1806 2154 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2155 int i, set = 0, err = 1;
2156 struct inet6_dev *idev;
2157
68bf9f0b
AW		 2158 if (pkt_dev->min_pkt_size == 0) {
2159 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2160 + sizeof(struct udphdr)
2161 + sizeof(struct pktgen_hdr)
2162 + pkt_dev->pkt_overhead;
2163 }
2164
222f1806
LC		 2165 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2166 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2167 set = 1;
2168 break;
2169 }
2170
222f1806
LC		 2171 if (!set) {
2172
1da177e4
LT		 2173 /*
2174 * Use linklevel address if unconfigured.
2175 *
2176 * use ipv6_get_lladdr if/when it's get exported
2177 */
2178
8814c4b5 2179 rcu_read_lock();
63adc6fb
SH		 2180 idev = __in6_dev_get(pkt_dev->odev);
2181 if (idev) {
1da177e4
LT		 2182 struct inet6_ifaddr *ifp;
2183
2184 read_lock_bh(&idev->lock);
4c139b8c
AW		 2185 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2186 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2187 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2188 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2189 err = 0;
2190 break;
2191 }
2192 }
2193 read_unlock_bh(&idev->lock);
2194 }
8814c4b5 2195 rcu_read_unlock();
222f1806 2196 if (err)
f9467eae 2197 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2198 }
222f1806 2199 } else {
68bf9f0b
AW		 2200 if (pkt_dev->min_pkt_size == 0) {
2201 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2202 + sizeof(struct udphdr)
2203 + sizeof(struct pktgen_hdr)
2204 + pkt_dev->pkt_overhead;
2205 }
2206
1da177e4
LT		 2207 pkt_dev->saddr_min = 0;
2208 pkt_dev->saddr_max = 0;
2209 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2210
2211 struct in_device *in_dev;
1da177e4
LT		 2212
2213 rcu_read_lock();
e5ed6399 2214 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2215 if (in_dev) {
2216 if (in_dev->ifa_list) {
222f1806
LC		 2217 pkt_dev->saddr_min =
2218 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2219 pkt_dev->saddr_max = pkt_dev->saddr_min;
2220 }
1da177e4
LT		 2221 }
2222 rcu_read_unlock();
222f1806 2223 } else {
1da177e4
LT		 2224 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2225 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2226 }
2227
2228 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2229 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2230 }
222f1806 2231 /* Initialize current values. */
68bf9f0b
AW		 2232 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2233 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2234 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2235
222f1806
LC		 2236 pkt_dev->cur_dst_mac_offset = 0;
2237 pkt_dev->cur_src_mac_offset = 0;
2238 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2239 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2240 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2241 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2242 pkt_dev->nflows = 0;
2243}
2244
fd29cf72
SH		 2245
2246static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2247{
ef87979c 2248 ktime_t start_time, end_time;
417bc4b8 2249 s64 remaining;
2bc481cf
SH		 2250 struct hrtimer_sleeper t;
2251
2252 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2253 hrtimer_set_expires(&t.timer, spin_until);
2254
43d28b65 2255 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
bcf91bdb
GR		 2256 if (remaining <= 0)
2257 goto out;
2bc481cf 2258
398f382c 2259 start_time = ktime_get();
33136d12
ED		 2260 if (remaining < 100000) {
2261 /* for small delays (<100us), just loop until limit is reached */
2262 do {
398f382c
DB		 2263 end_time = ktime_get();
2264 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2265 } else {
2bc481cf
SH		 2266 /* see do_nanosleep */
2267 hrtimer_init_sleeper(&t, current);
2268 do {
2269 set_current_state(TASK_INTERRUPTIBLE);
2270 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2bc481cf
SH		 2271
2272 if (likely(t.task))
1da177e4 2273 schedule();
1da177e4 2274
2bc481cf
SH		 2275 hrtimer_cancel(&t.timer);
2276 } while (t.task && pkt_dev->running && !signal_pending(current));
2277 __set_current_state(TASK_RUNNING);
398f382c 2278 end_time = ktime_get();
1da177e4 2279 }
ef87979c
SH		 2280
2281 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
bcf91bdb 2282out:
07a0f0f0 2283 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
bcf91bdb 2284 destroy_hrtimer_on_stack(&t.timer);
1da177e4
LT		 2285}
2286
16dab72f
JHS		 2287static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2288{
879c7220 2289 pkt_dev->pkt_overhead = LL_RESERVED_SPACE(pkt_dev->odev);
16dab72f
JHS		 2290 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2291 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2292 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2293}
2294
648fda74 2295static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2296{
648fda74 2297 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2298}
2299
2300static inline int f_pick(struct pktgen_dev *pkt_dev)
2301{
2302 int flow = pkt_dev->curfl;
2303
2304 if (pkt_dev->flags & F_FLOW_SEQ) {
2305 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2306 /* reset time */
2307 pkt_dev->flows[flow].count = 0;
1211a645 2308 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2309 pkt_dev->curfl += 1;
2310 if (pkt_dev->curfl >= pkt_dev->cflows)
2311 pkt_dev->curfl = 0; /*reset */
2312 }
2313 } else {
33d7c5e5 2314 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2315 pkt_dev->curfl = flow;
007a531b 2316
1211a645 2317 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2318 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2319 pkt_dev->flows[flow].flags = 0;
2320 }
007a531b
JHS		 2321 }
2322
2323 return pkt_dev->curfl;
2324}
2325
a553e4a6
JHS		 2326
2327#ifdef CONFIG_XFRM
2328/* If there was already an IPSEC SA, we keep it as is, else
2329 * we go look for it ...
2330*/
bd55775c 2331#define DUMMY_MARK 0
fea1ab0f 2332static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2333{
2334 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2335 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6 2336 if (!x) {
c454997e
FD		 2337
2338 if (pkt_dev->spi) {
2339 /* We need as quick as possible to find the right SA
2340 * Searching with minimum criteria to archieve this.
2341 */
2342 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2343 } else {
2344 /* slow path: we dont already have xfrm_state */
2345 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2346 (xfrm_address_t *)&pkt_dev->cur_daddr,
2347 (xfrm_address_t *)&pkt_dev->cur_saddr,
2348 AF_INET,
2349 pkt_dev->ipsmode,
2350 pkt_dev->ipsproto, 0);
2351 }
a553e4a6
JHS		 2352 if (x) {
2353 pkt_dev->flows[flow].x = x;
2354 set_pkt_overhead(pkt_dev);
63adc6fb 2355 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2356 }
2357
2358 }
2359}
2360#endif
fd2ea0a7
DM		 2361static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2362{
e6fce5b9
RO		 2363
2364 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2365 pkt_dev->cur_queue_map = smp_processor_id();
2366
896a7cf8 2367 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2368 __u16 t;
2369 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2370 t = prandom_u32() %
fd2ea0a7
DM		 2371 (pkt_dev->queue_map_max -
2372 pkt_dev->queue_map_min + 1)
2373 + pkt_dev->queue_map_min;
2374 } else {
2375 t = pkt_dev->cur_queue_map + 1;
2376 if (t > pkt_dev->queue_map_max)
2377 t = pkt_dev->queue_map_min;
2378 }
2379 pkt_dev->cur_queue_map = t;
2380 }
bfdbc0ac 2381 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2382}
2383
1da177e4
LT		 2384/* Increment/randomize headers according to flags and current values
2385 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2386 */
222f1806
LC		 2387static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2388{
2389 __u32 imn;
2390 __u32 imx;
2391 int flow = 0;
1da177e4 2392
007a531b
JHS		 2393 if (pkt_dev->cflows)
2394 flow = f_pick(pkt_dev);
1da177e4
LT		 2395
2396 /* Deal with source MAC */
222f1806
LC		 2397 if (pkt_dev->src_mac_count > 1) {
2398 __u32 mc;
2399 __u32 tmp;
2400
2401 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2402 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2403 else {
2404 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2405 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2406 pkt_dev->src_mac_count)
2407 pkt_dev->cur_src_mac_offset = 0;
2408 }
2409
2410 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2411 pkt_dev->hh[11] = tmp;
2412 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2413 pkt_dev->hh[10] = tmp;
2414 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2415 pkt_dev->hh[9] = tmp;
2416 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2417 pkt_dev->hh[8] = tmp;
2418 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2419 pkt_dev->hh[7] = tmp;
2420 }
2421
2422 /* Deal with Destination MAC */
2423 if (pkt_dev->dst_mac_count > 1) {
2424 __u32 mc;
2425 __u32 tmp;
2426
2427 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2428 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2429
2430 else {
2431 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2432 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2433 pkt_dev->dst_mac_count) {
2434 pkt_dev->cur_dst_mac_offset = 0;
2435 }
2436 }
2437
2438 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2439 pkt_dev->hh[5] = tmp;
2440 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2441 pkt_dev->hh[4] = tmp;
2442 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2443 pkt_dev->hh[3] = tmp;
2444 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2445 pkt_dev->hh[2] = tmp;
2446 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2447 pkt_dev->hh[1] = tmp;
2448 }
2449
ca6549af 2450 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2451 unsigned int i;
e71a4783 2452 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2453 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2454 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2455 ((__force __be32)prandom_u32() &
ca6549af
SW		 2456 htonl(0x000fffff));
2457 }
2458
34954ddc 2459 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2460 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2461 }
2462
2463 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2464 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2465 }
2466
222f1806
LC		 2467 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2468 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2469 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2470 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2471 + pkt_dev->udp_src_min;
222f1806
LC		 2472
2473 else {
1da177e4
LT		 2474 pkt_dev->cur_udp_src++;
2475 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2476 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2477 }
2478 }
2479
2480 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2481 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2482 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2483 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2484 + pkt_dev->udp_dst_min;
222f1806 2485 } else {
1da177e4 2486 pkt_dev->cur_udp_dst++;
222f1806 2487 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2488 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2489 }
2490 }
1da177e4
LT		 2491
2492 if (!(pkt_dev->flags & F_IPV6)) {
2493
63adc6fb
SH		 2494 imn = ntohl(pkt_dev->saddr_min);
2495 imx = ntohl(pkt_dev->saddr_max);
2496 if (imn < imx) {
1da177e4 2497 __u32 t;
222f1806 2498 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2499 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2500 else {
2501 t = ntohl(pkt_dev->cur_saddr);
2502 t++;
63adc6fb 2503 if (t > imx)
1da177e4 2504 t = imn;
63adc6fb 2505
1da177e4
LT		 2506 }
2507 pkt_dev->cur_saddr = htonl(t);
2508 }
222f1806 2509
007a531b 2510 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2511 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2512 } else {
252e3346
AV		 2513 imn = ntohl(pkt_dev->daddr_min);
2514 imx = ntohl(pkt_dev->daddr_max);
2515 if (imn < imx) {
1da177e4 2516 __u32 t;
252e3346 2517 __be32 s;
1da177e4
LT		 2518 if (pkt_dev->flags & F_IPDST_RND) {
2519
70e3ba72 2520 do {
33d7c5e5
AM		 2521 t = prandom_u32() %
2522 (imx - imn) + imn;
252e3346 2523 s = htonl(t);
70e3ba72
AM		 2524 } while (ipv4_is_loopback(s) ||
2525 ipv4_is_multicast(s) ||
2526 ipv4_is_lbcast(s) ||
2527 ipv4_is_zeronet(s) ||
2528 ipv4_is_local_multicast(s));
252e3346
AV		 2529 pkt_dev->cur_daddr = s;
2530 } else {
1da177e4
LT		 2531 t = ntohl(pkt_dev->cur_daddr);
2532 t++;
2533 if (t > imx) {
2534 t = imn;
2535 }
2536 pkt_dev->cur_daddr = htonl(t);
2537 }
2538 }
222f1806 2539 if (pkt_dev->cflows) {
007a531b 2540 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2541 pkt_dev->flows[flow].cur_daddr =
2542 pkt_dev->cur_daddr;
a553e4a6
JHS		 2543#ifdef CONFIG_XFRM
2544 if (pkt_dev->flags & F_IPSEC_ON)
2545 get_ipsec_sa(pkt_dev, flow);
2546#endif
1da177e4
LT		 2547 pkt_dev->nflows++;
2548 }
2549 }
222f1806
LC		 2550 } else { /* IPV6 * */
2551
06e30411 2552 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2553 int i;
2554
2555 /* Only random destinations yet */
2556
222f1806 2557 for (i = 0; i < 4; i++) {
1da177e4 2558 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2559 (((__force __be32)prandom_u32() |
222f1806
LC		 2560 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2561 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2562 }
222f1806 2563 }
1da177e4
LT		 2564 }
2565
222f1806
LC		 2566 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2567 __u32 t;
2568 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2569 t = prandom_u32() %
5fa6fc76
SH		 2570 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2571 + pkt_dev->min_pkt_size;
222f1806 2572 } else {
1da177e4 2573 t = pkt_dev->cur_pkt_size + 1;
222f1806 2574 if (t > pkt_dev->max_pkt_size)
1da177e4 2575 t = pkt_dev->min_pkt_size;
222f1806
LC		 2576 }
2577 pkt_dev->cur_pkt_size = t;
2578 }
1da177e4 2579
fd2ea0a7 2580 set_cur_queue_map(pkt_dev);
45b270f8 2581
1da177e4
LT		 2582 pkt_dev->flows[flow].count++;
2583}
2584
a553e4a6
JHS		 2585
2586#ifdef CONFIG_XFRM
5537a055 2587static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
cf93d47e
FD		 2588
2589 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2590};
2591
a553e4a6
JHS		 2592static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2593{
2594 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2595 int err = 0;
6de9ace4 2596 struct net *net = dev_net(pkt_dev->odev);
a553e4a6
JHS		 2597
2598 if (!x)
2599 return 0;
2600 /* XXX: we dont support tunnel mode for now until
2601 * we resolve the dst issue */
cf93d47e 2602 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
a553e4a6
JHS		 2603 return 0;
2604
cf93d47e
FD		 2605 /* But when user specify an valid SPI, transformation
2606 * supports both transport/tunnel mode + ESP/AH type.
2607 */
2608 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2609 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2610
2611 rcu_read_lock_bh();
13996378 2612 err = x->outer_mode->output(x, skb);
cf93d47e 2613 rcu_read_unlock_bh();
6de9ace4
FD		 2614 if (err) {
2615 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
a553e4a6 2616 goto error;
6de9ace4 2617 }
a553e4a6 2618 err = x->type->output(x, skb);
6de9ace4
FD		 2619 if (err) {
2620 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
a553e4a6 2621 goto error;
6de9ace4 2622 }
0af0a413 2623 spin_lock_bh(&x->lock);
63adc6fb 2624 x->curlft.bytes += skb->len;
a553e4a6 2625 x->curlft.packets++;
0af0a413 2626 spin_unlock_bh(&x->lock);
a553e4a6 2627error:
a553e4a6
JHS		 2628 return err;
2629}
2630
475ac1e4 2631static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2632{
2633 if (pkt_dev->cflows) {
2634 /* let go of the SAs if we have them */
d6182223
PG		 2635 int i;
2636 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2637 struct xfrm_state *x = pkt_dev->flows[i].x;
2638 if (x) {
2639 xfrm_state_put(x);
2640 pkt_dev->flows[i].x = NULL;
2641 }
2642 }
2643 }
2644}
2645
475ac1e4 2646static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2647 struct sk_buff *skb, __be16 protocol)
2648{
2649 if (pkt_dev->flags & F_IPSEC_ON) {
2650 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2651 int nhead = 0;
2652 if (x) {
d4969581 2653 struct ethhdr *eth;
3868204d 2654 struct iphdr *iph;
d4969581 2655 int ret;
3868204d 2656
a553e4a6 2657 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2658 if (nhead > 0) {
a553e4a6
JHS		 2659 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2660 if (ret < 0) {
f9467eae
JP		 2661 pr_err("Error expanding ipsec packet %d\n",
2662 ret);
b4bb4ac8 2663 goto err;
a553e4a6
JHS		 2664 }
2665 }
2666
2667 /* ipsec is not expecting ll header */
2668 skb_pull(skb, ETH_HLEN);
2669 ret = pktgen_output_ipsec(skb, pkt_dev);
2670 if (ret) {
f9467eae 2671 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2672 goto err;
a553e4a6
JHS		 2673 }
2674 /* restore ll */
d4969581
ED		 2675 eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
2676 memcpy(eth, pkt_dev->hh, 2 * ETH_ALEN);
2677 eth->h_proto = protocol;
3868204d 2678
2679 /* Update IPv4 header len as well as checksum value */
2680 iph = ip_hdr(skb);
2681 iph->tot_len = htons(skb->len - ETH_HLEN);
2682 ip_send_check(iph);
a553e4a6
JHS		 2683 }
2684 }
2685 return 1;
b4bb4ac8
IJ		 2686err:
2687 kfree_skb(skb);
2688 return 0;
a553e4a6
JHS		 2689}
2690#endif
2691
ca6549af
SW		 2692static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2693{
95c96174 2694 unsigned int i;
63adc6fb 2695 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2696 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2697
ca6549af
SW		 2698 mpls--;
2699 *mpls |= MPLS_STACK_BOTTOM;
2700}
2701
0f37c605
AV		 2702static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2703 unsigned int prio)
2704{
2705 return htons(id | (cfi << 12) | (prio << 13));
2706}
2707
26ad7879
ED		 2708static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2709 int datalen)
2710{
2711 struct timeval timestamp;
2712 struct pktgen_hdr *pgh;
2713
2714 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2715 datalen -= sizeof(*pgh);
2716
2717 if (pkt_dev->nfrags <= 0) {
05aebe2e 2718 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2719 } else {
2720 int frags = pkt_dev->nfrags;
2721 int i, len;
7d36a991 2722 int frag_len;
26ad7879
ED		 2723
2724
2725 if (frags > MAX_SKB_FRAGS)
2726 frags = MAX_SKB_FRAGS;
2727 len = datalen - frags * PAGE_SIZE;
2728 if (len > 0) {
2729 memset(skb_put(skb, len), 0, len);
2730 datalen = frags * PAGE_SIZE;
2731 }
2732
2733 i = 0;
7d36a991 2734 frag_len = (datalen/frags) < PAGE_SIZE ?
2735 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2736 while (datalen > 0) {
2737 if (unlikely(!pkt_dev->page)) {
2738 int node = numa_node_id();
2739
2740 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2741 node = pkt_dev->node;
2742 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2743 if (!pkt_dev->page)
2744 break;
2745 }
a0bec1cd 2746 get_page(pkt_dev->page);
ea2ab693 2747 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2748 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2749 /*last fragment, fill rest of data*/
2750 if (i == (frags - 1))
9e903e08
ED		 2751 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2752 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2753 else
9e903e08
ED		 2754 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2755 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2756 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2757 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2758 i++;
2759 skb_shinfo(skb)->nr_frags = i;
2760 }
26ad7879
ED		 2761 }
2762
2763 /* Stamp the time, and sequence number,
2764 * convert them to network byte order
2765 */
2766 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2767 pgh->seq_num = htonl(pkt_dev->seq_num);
2768
afb84b62
JDB		 2769 if (pkt_dev->flags & F_NO_TIMESTAMP) {
2770 pgh->tv_sec = 0;
2771 pgh->tv_usec = 0;
2772 } else {
2773 do_gettimeofday(&timestamp);
2774 pgh->tv_sec = htonl(timestamp.tv_sec);
2775 pgh->tv_usec = htonl(timestamp.tv_usec);
2776 }
26ad7879
ED		 2777}
2778
7a6e288d
DB		 2779static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2780 struct pktgen_dev *pkt_dev,
2781 unsigned int extralen)
2782{
2783 struct sk_buff *skb = NULL;
2784 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2785 pkt_dev->pkt_overhead;
2786
2787 if (pkt_dev->flags & F_NODE) {
2788 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2789
2790 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2791 if (likely(skb)) {
2792 skb_reserve(skb, NET_SKB_PAD);
2793 skb->dev = dev;
2794 }
2795 } else {
2796 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2797 }
3de03596
JF		 2798
2799 if (likely(skb))
2800 skb_reserve(skb, LL_RESERVED_SPACE(dev));
7a6e288d
DB		 2801
2802 return skb;
2803}
2804
222f1806
LC		 2805static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2806 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2807{
2808 struct sk_buff *skb = NULL;
2809 __u8 *eth;
2810 struct udphdr *udph;
2811 int datalen, iplen;
2812 struct iphdr *iph;
d5f1ce9a 2813 __be16 protocol = htons(ETH_P_IP);
ca6549af 2814 __be32 *mpls;
34954ddc
FF		 2815 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2816 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2817 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2818 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2819 u16 queue_map;
ca6549af
SW		 2820
2821 if (pkt_dev->nr_labels)
d5f1ce9a 2822 protocol = htons(ETH_P_MPLS_UC);
222f1806 2823
34954ddc 2824 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2825 protocol = htons(ETH_P_8021Q);
34954ddc 2826
64053bee
RO		 2827 /* Update any of the values, used when we're incrementing various
2828 * fields.
2829 */
2830 mod_cur_headers(pkt_dev);
eb589063 2831 queue_map = pkt_dev->cur_queue_map;
64053bee 2832
7ac5459e 2833 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2834
7a6e288d 2835 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT		 2836 if (!skb) {
2837 sprintf(pkt_dev->result, "No memory");
2838 return NULL;
2839 }
2840
7a6e288d 2841 prefetchw(skb->data);
7ac5459e 2842 skb_reserve(skb, datalen);
1da177e4
LT		 2843
2844 /* Reserve for ethernet and IP header */
2845 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2846 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2847 if (pkt_dev->nr_labels)
2848 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2849
2850 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2851 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2852 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2853 *svlan_tci = build_tci(pkt_dev->svlan_id,
2854 pkt_dev->svlan_cfi,
2855 pkt_dev->svlan_p);
34954ddc 2856 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2857 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2858 }
2859 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2860 *vlan_tci = build_tci(pkt_dev->vlan_id,
2861 pkt_dev->vlan_cfi,
2862 pkt_dev->vlan_p);
34954ddc 2863 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2864 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2865 }
2866
c145aeb3 2867 skb_reset_mac_header(skb);
525cebed
TG		 2868 skb_set_network_header(skb, skb->len);
2869 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2870
2871 skb_set_transport_header(skb, skb->len);
2872 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2873 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2874 skb->priority = pkt_dev->skb_priority;
2875
1da177e4 2876 memcpy(eth, pkt_dev->hh, 12);
252e3346 2877 *(__be16 *) & eth[12] = protocol;
1da177e4 2878
ca6549af
SW		 2879 /* Eth + IPh + UDPh + mpls */
2880 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2881 pkt_dev->pkt_overhead;
6af773e7 2882 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2883 datalen = sizeof(struct pktgen_hdr);
222f1806 2884
1da177e4
LT		 2885 udph->source = htons(pkt_dev->cur_udp_src);
2886 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2887 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2888 udph->check = 0;
1da177e4
LT		 2889
2890 iph->ihl = 5;
2891 iph->version = 4;
2892 iph->ttl = 32;
1ca7768c 2893 iph->tos = pkt_dev->tos;
222f1806 2894 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2895 iph->saddr = pkt_dev->cur_saddr;
2896 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2897 iph->id = htons(pkt_dev->ip_id);
2898 pkt_dev->ip_id++;
1da177e4
LT		 2899 iph->frag_off = 0;
2900 iplen = 20 + 8 + datalen;
2901 iph->tot_len = htons(iplen);
03c633e7 2902 ip_send_check(iph);
ca6549af 2903 skb->protocol = protocol;
1da177e4
LT		 2904 skb->dev = odev;
2905 skb->pkt_type = PACKET_HOST;
c26bf4a5 2906
7744b5f3
SD		 2907 pktgen_finalize_skb(pkt_dev, skb, datalen);
2908
c26bf4a5
TG		 2909 if (!(pkt_dev->flags & F_UDPCSUM)) {
2910 skb->ip_summed = CHECKSUM_NONE;
c8cd0989 2911 } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM)) {
c26bf4a5
TG		 2912 skb->ip_summed = CHECKSUM_PARTIAL;
2913 skb->csum = 0;
7744b5f3 2914 udp4_hwcsum(skb, iph->saddr, iph->daddr);
c26bf4a5 2915 } else {
7744b5f3 2916 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0);
c26bf4a5
TG		 2917
2918 /* add protocol-dependent pseudo-header */
7744b5f3 2919 udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
c26bf4a5
TG		 2920 datalen + 8, IPPROTO_UDP, csum);
2921
2922 if (udph->check == 0)
2923 udph->check = CSUM_MANGLED_0;
2924 }
2925
a553e4a6
JHS		 2926#ifdef CONFIG_XFRM
2927 if (!process_ipsec(pkt_dev, skb, protocol))
2928 return NULL;
2929#endif
2930
1da177e4
LT		 2931 return skb;
2932}
2933
222f1806
LC		 2934static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2935 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2936{
2937 struct sk_buff *skb = NULL;
2938 __u8 *eth;
2939 struct udphdr *udph;
c26bf4a5 2940 int datalen, udplen;
1da177e4 2941 struct ipv6hdr *iph;
d5f1ce9a 2942 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2943 __be32 *mpls;
34954ddc
FF		 2944 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2945 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2946 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2947 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2948 u16 queue_map;
ca6549af
SW		 2949
2950 if (pkt_dev->nr_labels)
d5f1ce9a 2951 protocol = htons(ETH_P_MPLS_UC);
64053bee 2952
34954ddc 2953 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2954 protocol = htons(ETH_P_8021Q);
34954ddc 2955
64053bee
RO		 2956 /* Update any of the values, used when we're incrementing various
2957 * fields.
2958 */
2959 mod_cur_headers(pkt_dev);
eb589063 2960 queue_map = pkt_dev->cur_queue_map;
64053bee 2961
7a6e288d 2962 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT		 2963 if (!skb) {
2964 sprintf(pkt_dev->result, "No memory");
2965 return NULL;
2966 }
2967
7a6e288d 2968 prefetchw(skb->data);
1da177e4
LT		 2969 skb_reserve(skb, 16);
2970
2971 /* Reserve for ethernet and IP header */
2972 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2973 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2974 if (pkt_dev->nr_labels)
2975 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2976
2977 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2978 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2979 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2980 *svlan_tci = build_tci(pkt_dev->svlan_id,
2981 pkt_dev->svlan_cfi,
2982 pkt_dev->svlan_p);
34954ddc 2983 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2984 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2985 }
2986 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2987 *vlan_tci = build_tci(pkt_dev->vlan_id,
2988 pkt_dev->vlan_cfi,
2989 pkt_dev->vlan_p);
34954ddc 2990 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2991 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2992 }
2993
c145aeb3 2994 skb_reset_mac_header(skb);
525cebed
TG		 2995 skb_set_network_header(skb, skb->len);
2996 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2997
2998 skb_set_transport_header(skb, skb->len);
2999 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 3000 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 3001 skb->priority = pkt_dev->skb_priority;
1da177e4 3002
1da177e4 3003 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 3004 *(__be16 *) &eth[12] = protocol;
64053bee 3005
ca6549af
SW		 3006 /* Eth + IPh + UDPh + mpls */
3007 datalen = pkt_dev->cur_pkt_size - 14 -
3008 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 3009 pkt_dev->pkt_overhead;
1da177e4 3010
5aa8b572 3011 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 3012 datalen = sizeof(struct pktgen_hdr);
e87cc472 3013 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 3014 }
3015
c26bf4a5 3016 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT		 3017 udph->source = htons(pkt_dev->cur_udp_src);
3018 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG		 3019 udph->len = htons(udplen);
3020 udph->check = 0;
1da177e4 3021
d5f1ce9a 3022 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 3023
1ca7768c
FF		 3024 if (pkt_dev->traffic_class) {
3025 /* Version + traffic class + flow (0) */
252e3346 3026 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 3027 }
3028
1da177e4
LT		 3029 iph->hop_limit = 32;
3030
c26bf4a5 3031 iph->payload_len = htons(udplen);
1da177e4
LT		 3032 iph->nexthdr = IPPROTO_UDP;
3033
4e3fd7a0
AD		 3034 iph->daddr = pkt_dev->cur_in6_daddr;
3035 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 3036
ca6549af 3037 skb->protocol = protocol;
1da177e4
LT		 3038 skb->dev = odev;
3039 skb->pkt_type = PACKET_HOST;
3040
7744b5f3
SD		 3041 pktgen_finalize_skb(pkt_dev, skb, datalen);
3042
c26bf4a5
TG		 3043 if (!(pkt_dev->flags & F_UDPCSUM)) {
3044 skb->ip_summed = CHECKSUM_NONE;
c8cd0989 3045 } else if (odev->features & (NETIF_F_HW_CSUM | NETIF_F_IPV6_CSUM)) {
c26bf4a5
TG		 3046 skb->ip_summed = CHECKSUM_PARTIAL;
3047 skb->csum_start = skb_transport_header(skb) - skb->head;
3048 skb->csum_offset = offsetof(struct udphdr, check);
3049 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
3050 } else {
7744b5f3 3051 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0);
c26bf4a5
TG		 3052
3053 /* add protocol-dependent pseudo-header */
3054 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
3055
3056 if (udph->check == 0)
3057 udph->check = CSUM_MANGLED_0;
3058 }
3059
1da177e4
LT		 3060 return skb;
3061}
3062
475ac1e4
SH		 3063static struct sk_buff *fill_packet(struct net_device *odev,
3064 struct pktgen_dev *pkt_dev)
1da177e4 3065{
222f1806 3066 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3067 return fill_packet_ipv6(odev, pkt_dev);
3068 else
3069 return fill_packet_ipv4(odev, pkt_dev);
3070}
3071
222f1806 3072static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3073{
222f1806
LC		 3074 pkt_dev->seq_num = 1;
3075 pkt_dev->idle_acc = 0;
1da177e4 3076 pkt_dev->sofar = 0;
222f1806
LC		 3077 pkt_dev->tx_bytes = 0;
3078 pkt_dev->errors = 0;
1da177e4
LT		 3079}
3080
3081/* Set up structure for sending pkts, clear counters */
3082
3083static void pktgen_run(struct pktgen_thread *t)
3084{
c26a8016 3085 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3086 int started = 0;
3087
f9467eae 3088 func_enter();
1da177e4 3089
8788370a
JDB		 3090 rcu_read_lock();
3091 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3092
3093 /*
3094 * setup odev and create initial packet.
3095 */
3096 pktgen_setup_inject(pkt_dev);
3097
222f1806 3098 if (pkt_dev->odev) {
1da177e4 3099 pktgen_clear_counters(pkt_dev);
1da177e4 3100 pkt_dev->skb = NULL;
398f382c 3101 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 3102
16dab72f 3103 set_pkt_overhead(pkt_dev);
222f1806 3104
1da177e4 3105 strcpy(pkt_dev->result, "Starting");
8788370a 3106 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3107 started++;
222f1806 3108 } else
1da177e4
LT		 3109 strcpy(pkt_dev->result, "Error starting");
3110 }
8788370a 3111 rcu_read_unlock();
222f1806
LC		 3112 if (started)
3113 t->control &= ~(T_STOP);
1da177e4
LT		 3114}
3115
4e58a027 3116static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 3117{
cdcdbe0b 3118 struct pktgen_thread *t;
1da177e4 3119
f9467eae 3120 func_enter();
1da177e4 3121
6146e6a4 3122 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3123
4e58a027 3124 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 3125 t->control |= T_STOP;
cdcdbe0b 3126
6146e6a4 3127 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3128}
3129
648fda74 3130static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3131{
648fda74 3132 const struct pktgen_dev *pkt_dev;
1da177e4 3133
8788370a
JDB		 3134 rcu_read_lock();
3135 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
3136 if (pkt_dev->running) {
3137 rcu_read_unlock();
648fda74 3138 return 1;
8788370a
JDB		 3139 }
3140 rcu_read_unlock();
648fda74 3141 return 0;
1da177e4
LT		 3142}
3143
222f1806 3144static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3145{
222f1806 3146 while (thread_is_running(t)) {
1da177e4 3147
222f1806 3148 msleep_interruptible(100);
1da177e4 3149
222f1806
LC		 3150 if (signal_pending(current))
3151 goto signal;
222f1806 3152 }
222f1806
LC		 3153 return 1;
3154signal:
3155 return 0;
1da177e4
LT		 3156}
3157
4e58a027 3158static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3159{
cdcdbe0b 3160 struct pktgen_thread *t;
1da177e4 3161 int sig = 1;
222f1806 3162
6146e6a4 3163 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3164
4e58a027 3165 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3166 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3167 if (sig == 0)
3168 break;
1da177e4 3169 }
cdcdbe0b
LC		 3170
3171 if (sig == 0)
4e58a027 3172 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3173 t->control |= (T_STOP);
cdcdbe0b 3174
6146e6a4 3175 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3176 return sig;
3177}
3178
4e58a027 3179static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3180{
cdcdbe0b 3181 struct pktgen_thread *t;
1da177e4 3182
f9467eae 3183 func_enter();
1da177e4 3184
6146e6a4 3185 mutex_lock(&pktgen_thread_lock);
1da177e4 3186
4e58a027 3187 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3188 t->control |= (T_RUN);
cdcdbe0b 3189
6146e6a4 3190 mutex_unlock(&pktgen_thread_lock);
1da177e4 3191
63adc6fb
SH		 3192 /* Propagate thread->control */
3193 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3194
4e58a027 3195 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3196}
3197
4e58a027 3198static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3199{
3200 struct pktgen_thread *t;
3201
f9467eae 3202 func_enter();
eb37b41c
JB		 3203
3204 mutex_lock(&pktgen_thread_lock);
3205
4e58a027 3206 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3207 t->control |= (T_REMDEVALL);
3208
3209 mutex_unlock(&pktgen_thread_lock);
3210
63adc6fb
SH		 3211 /* Propagate thread->control */
3212 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3213
4e58a027 3214 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3215}
3216
1da177e4
LT		 3217static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3218{
fd29cf72 3219 __u64 bps, mbps, pps;
222f1806 3220 char *p = pkt_dev->result;
fd29cf72
SH		 3221 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3222 pkt_dev->started_at);
3223 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3224
03a14ab1 3225 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3226 (unsigned long long)ktime_to_us(elapsed),
3227 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3228 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3229 (unsigned long long)pkt_dev->sofar,
3230 pkt_dev->cur_pkt_size, nr_frags);
3231
fd29cf72
SH		 3232 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3233 ktime_to_ns(elapsed));
222f1806
LC		 3234
3235 bps = pps * 8 * pkt_dev->cur_pkt_size;
3236
3237 mbps = bps;
3238 do_div(mbps, 1000000);
3239 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3240 (unsigned long long)pps,
3241 (unsigned long long)mbps,
3242 (unsigned long long)bps,
3243 (unsigned long long)pkt_dev->errors);
1da177e4 3244}
1da177e4
LT		 3245
3246/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3247static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3248{
222f1806 3249 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3250
222f1806 3251 if (!pkt_dev->running) {
294a0b7f
JP		 3252 pr_warn("interface: %s is already stopped\n",
3253 pkt_dev->odevname);
222f1806
LC		 3254 return -EINVAL;
3255 }
1da177e4 3256
8788370a 3257 pkt_dev->running = 0;
3bda06a3
SH		 3258 kfree_skb(pkt_dev->skb);
3259 pkt_dev->skb = NULL;
398f382c 3260 pkt_dev->stopped_at = ktime_get();
1da177e4 3261
95ed63f7 3262 show_results(pkt_dev, nr_frags);
1da177e4 3263
222f1806 3264 return 0;
1da177e4
LT		 3265}
3266
222f1806 3267static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3268{
c26a8016 3269 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3270
8788370a
JDB		 3271 rcu_read_lock();
3272 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3273 if (!pkt_dev->running)
222f1806
LC		 3274 continue;
3275 if (best == NULL)
c26a8016 3276 best = pkt_dev;
398f382c 3277 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3278 best = pkt_dev;
1da177e4 3279 }
8788370a
JDB		 3280 rcu_read_unlock();
3281
222f1806 3282 return best;
1da177e4
LT		 3283}
3284
222f1806
LC		 3285static void pktgen_stop(struct pktgen_thread *t)
3286{
c26a8016 3287 struct pktgen_dev *pkt_dev;
1da177e4 3288
f9467eae 3289 func_enter();
1da177e4 3290
8788370a 3291 rcu_read_lock();
1da177e4 3292
8788370a 3293 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3294 pktgen_stop_device(pkt_dev);
95ed63f7 3295 }
1da177e4 3296
8788370a 3297 rcu_read_unlock();
1da177e4
LT		 3298}
3299
95ed63f7
AK		 3300/*
3301 * one of our devices needs to be removed - find it
3302 * and remove it
3303 */
3304static void pktgen_rem_one_if(struct pktgen_thread *t)
3305{
c26a8016
LC		 3306 struct list_head *q, *n;
3307 struct pktgen_dev *cur;
95ed63f7 3308
f9467eae 3309 func_enter();
95ed63f7 3310
c26a8016
LC		 3311 list_for_each_safe(q, n, &t->if_list) {
3312 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3313
222f1806
LC		 3314 if (!cur->removal_mark)
3315 continue;
95ed63f7 3316
86dc1ad2 3317 kfree_skb(cur->skb);
95ed63f7
AK		 3318 cur->skb = NULL;
3319
3320 pktgen_remove_device(t, cur);
3321
3322 break;
3323 }
95ed63f7
AK		 3324}
3325
222f1806 3326static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3327{
c26a8016
LC		 3328 struct list_head *q, *n;
3329 struct pktgen_dev *cur;
222f1806 3330
f9467eae
JP		 3331 func_enter();
3332
222f1806 3333 /* Remove all devices, free mem */
95ed63f7 3334
c26a8016
LC		 3335 list_for_each_safe(q, n, &t->if_list) {
3336 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3337
86dc1ad2 3338 kfree_skb(cur->skb);
95ed63f7
AK		 3339 cur->skb = NULL;
3340
1da177e4
LT		 3341 pktgen_remove_device(t, cur);
3342 }
1da177e4
LT		 3343}
3344
222f1806 3345static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3346{
222f1806 3347 /* Remove from the thread list */
4e58a027 3348 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3349}
3350
ef87979c 3351static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3352{
398f382c 3353 ktime_t idle_start = ktime_get();
ef87979c 3354 schedule();
398f382c 3355 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3356}
3791decb 3357
ef87979c
SH		 3358static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3359{
398f382c 3360 ktime_t idle_start = ktime_get();
3791decb 3361
ef87979c
SH		 3362 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3363 if (signal_pending(current))
3364 break;
3365
3366 if (need_resched())
3367 pktgen_resched(pkt_dev);
3368 else
3369 cpu_relax();
3370 }
398f382c 3371 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3372}
3373
475ac1e4 3374static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3375{
38b2cf29 3376 unsigned int burst = ACCESS_ONCE(pkt_dev->burst);
00829823 3377 struct net_device *odev = pkt_dev->odev;
fd2ea0a7 3378 struct netdev_queue *txq;
62f64aed 3379 struct sk_buff *skb;
1da177e4
LT		 3380 int ret;
3381
ef87979c
SH		 3382 /* If device is offline, then don't send */
3383 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3384 pktgen_stop_device(pkt_dev);
3385 return;
fd2ea0a7
DM		 3386 }
3387
ef87979c
SH		 3388 /* This is max DELAY, this has special meaning of
3389 * "never transmit"
3390 */
3391 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3392 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3393 return;
1da177e4 3394 }
222f1806 3395
ef87979c 3396 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3397 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3398 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3399 /* build a new pkt */
3400 kfree_skb(pkt_dev->skb);
3401
3402 pkt_dev->skb = fill_packet(odev, pkt_dev);
3403 if (pkt_dev->skb == NULL) {
f9467eae 3404 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3405 schedule();
3406 pkt_dev->clone_count--; /* back out increment, OOM */
3407 return;
1da177e4 3408 }
baac8564 3409 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf 3410 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3411 }
95ed63f7 3412
ef87979c
SH		 3413 if (pkt_dev->delay && pkt_dev->last_ok)
3414 spin(pkt_dev, pkt_dev->next_tx);
3415
62f64aed
AS		 3416 if (pkt_dev->xmit_mode == M_NETIF_RECEIVE) {
3417 skb = pkt_dev->skb;
3418 skb->protocol = eth_type_trans(skb, skb->dev);
3419 atomic_add(burst, &skb->users);
3420 local_bh_disable();
3421 do {
3422 ret = netif_receive_skb(skb);
3423 if (ret == NET_RX_DROP)
3424 pkt_dev->errors++;
3425 pkt_dev->sofar++;
3426 pkt_dev->seq_num++;
3427 if (atomic_read(&skb->users) != burst) {
3428 /* skb was queued by rps/rfs or taps,
3429 * so cannot reuse this skb
3430 */
3431 atomic_sub(burst - 1, &skb->users);
3432 /* get out of the loop and wait
3433 * until skb is consumed
3434 */
62f64aed
AS		 3435 break;
3436 }
3437 /* skb was 'freed' by stack, so clean few
3438 * bits and reuse it
3439 */
3440#ifdef CONFIG_NET_CLS_ACT
3441 skb->tc_verd = 0; /* reset reclass/redir ttl */
3442#endif
3443 } while (--burst > 0);
3444 goto out; /* Skips xmit_mode M_START_XMIT */
0967f244
JF		 3445 } else if (pkt_dev->xmit_mode == M_QUEUE_XMIT) {
3446 local_bh_disable();
3447 atomic_inc(&pkt_dev->skb->users);
3448
3449 ret = dev_queue_xmit(pkt_dev->skb);
3450 switch (ret) {
3451 case NET_XMIT_SUCCESS:
3452 pkt_dev->sofar++;
3453 pkt_dev->seq_num++;
3454 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
3455 break;
3456 case NET_XMIT_DROP:
3457 case NET_XMIT_CN:
3458 /* These are all valid return codes for a qdisc but
3459 * indicate packets are being dropped or will likely
3460 * be dropped soon.
3461 */
3462 case NETDEV_TX_BUSY:
3463 /* qdisc may call dev_hard_start_xmit directly in cases
3464 * where no queues exist e.g. loopback device, virtual
3465 * devices, etc. In this case we need to handle
3466 * NETDEV_TX_ codes.
3467 */
3468 default:
3469 pkt_dev->errors++;
3470 net_info_ratelimited("%s xmit error: %d\n",
3471 pkt_dev->odevname, ret);
3472 break;
3473 }
3474 goto out;
62f64aed
AS		 3475 }
3476
10c51b56 3477 txq = skb_get_tx_queue(odev, pkt_dev->skb);
fd2ea0a7 3478
0f2eea4b
DB		 3479 local_bh_disable();
3480
3481 HARD_TX_LOCK(odev, txq, smp_processor_id());
5b8db2f5 3482
6f25cd47 3483 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
ef87979c 3484 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3485 pkt_dev->last_ok = 0;
3486 goto unlock;
3487 }
38b2cf29
AS		 3488 atomic_add(burst, &pkt_dev->skb->users);
3489
3490xmit_more:
3491 ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0);
ef87979c
SH		 3492
3493 switch (ret) {
3494 case NETDEV_TX_OK:
ef87979c
SH		 3495 pkt_dev->last_ok = 1;
3496 pkt_dev->sofar++;
3497 pkt_dev->seq_num++;
baac8564 3498 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
38b2cf29
AS		 3499 if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq))
3500 goto xmit_more;
ef87979c 3501 break;
f466dba1
JF		 3502 case NET_XMIT_DROP:
3503 case NET_XMIT_CN:
f466dba1
JF		 3504 /* skb has been consumed */
3505 pkt_dev->errors++;
3506 break;
ef87979c 3507 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3508 net_info_ratelimited("%s xmit error: %d\n",
3509 pkt_dev->odevname, ret);
ef87979c
SH		 3510 pkt_dev->errors++;
3511 /* fallthru */
ef87979c
SH		 3512 case NETDEV_TX_BUSY:
3513 /* Retry it next time */
3514 atomic_dec(&(pkt_dev->skb->users));
3515 pkt_dev->last_ok = 0;
222f1806 3516 }
38b2cf29
AS		 3517 if (unlikely(burst))
3518 atomic_sub(burst, &pkt_dev->skb->users);
0835acfe 3519unlock:
0f2eea4b
DB		 3520 HARD_TX_UNLOCK(odev, txq);
3521
62f64aed 3522out:
0f2eea4b 3523 local_bh_enable();
222f1806 3524
1da177e4
LT		 3525 /* If pkt_dev->count is zero, then run forever */
3526 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3527 pktgen_wait_for_skb(pkt_dev);
222f1806 3528
1da177e4
LT		 3529 /* Done with this */
3530 pktgen_stop_device(pkt_dev);
222f1806 3531 }
222f1806 3532}
1da177e4 3533
4ec93edb 3534/*
1da177e4
LT		 3535 * Main loop of the thread goes here
3536 */
3537
ee74baa7 3538static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3539{
3540 DEFINE_WAIT(wait);
ee74baa7 3541 struct pktgen_thread *t = arg;
222f1806 3542 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3543 int cpu = t->cpu;
1da177e4 3544
ee74baa7 3545 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3546
3547 init_waitqueue_head(&t->queue);
d3ede327 3548 complete(&t->start_done);
1da177e4 3549
f9467eae 3550 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3551
83144186
RW		 3552 set_freezable();
3553
ee74baa7
DM		 3554 while (!kthread_should_stop()) {
3555 pkt_dev = next_to_run(t);
1da177e4 3556
ef87979c 3557 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3558 if (t->net->pktgen_exiting)
551eaff1 3559 break;
ef87979c
SH		 3560 wait_event_interruptible_timeout(t->queue,
3561 t->control != 0,
3562 HZ/10);
1b3f720b 3563 try_to_freeze();
ef87979c 3564 continue;
ee74baa7 3565 }
1da177e4 3566
ef87979c 3567 if (likely(pkt_dev)) {
1da177e4
LT		 3568 pktgen_xmit(pkt_dev);
3569
ef87979c
SH		 3570 if (need_resched())
3571 pktgen_resched(pkt_dev);
3572 else
3573 cpu_relax();
3574 }
3575
222f1806 3576 if (t->control & T_STOP) {
1da177e4
LT		 3577 pktgen_stop(t);
3578 t->control &= ~(T_STOP);
3579 }
3580
222f1806 3581 if (t->control & T_RUN) {
1da177e4
LT		 3582 pktgen_run(t);
3583 t->control &= ~(T_RUN);
3584 }
3585
222f1806 3586 if (t->control & T_REMDEVALL) {
1da177e4 3587 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3588 t->control &= ~(T_REMDEVALL);
3589 }
3590
222f1806 3591 if (t->control & T_REMDEV) {
95ed63f7 3592 pktgen_rem_one_if(t);
1da177e4
LT		 3593 t->control &= ~(T_REMDEV);
3594 }
3595
09fe3ef4 3596 try_to_freeze();
222f1806 3597 }
1da177e4 3598
f9467eae 3599 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3600 pktgen_stop(t);
1da177e4 3601
f9467eae 3602 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3603 pktgen_rem_all_ifs(t);
1da177e4 3604
f9467eae 3605 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3606 pktgen_rem_thread(t);
cdcdbe0b 3607
ee74baa7 3608 return 0;
1da177e4
LT		 3609}
3610
222f1806 3611static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3612 const char *ifname, bool exact)
1da177e4 3613{
c26a8016 3614 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3615 size_t len = strlen(ifname);
222f1806 3616
8788370a
JDB		 3617 rcu_read_lock();
3618 list_for_each_entry_rcu(p, &t->if_list, list)
3e984840
ED		 3619 if (strncmp(p->odevname, ifname, len) == 0) {
3620 if (p->odevname[len]) {
3621 if (exact || p->odevname[len] != '@')
3622 continue;
3623 }
c26a8016 3624 pkt_dev = p;
222f1806
LC		 3625 break;
3626 }
222f1806 3627
8788370a 3628 rcu_read_unlock();
f9467eae 3629 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3630 return pkt_dev;
1da177e4
LT		 3631}
3632
4ec93edb
YH		 3633/*
3634 * Adds a dev at front of if_list.
1da177e4
LT		 3635 */
3636
222f1806
LC		 3637static int add_dev_to_thread(struct pktgen_thread *t,
3638 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3639{
3640 int rv = 0;
222f1806 3641
8788370a
JDB		 3642 /* This function cannot be called concurrently, as its called
3643 * under pktgen_thread_lock mutex, but it can run from
3644 * userspace on another CPU than the kthread. The if_lock()
3645 * is used here to sync with concurrent instances of
3646 * _rem_dev_from_if_list() invoked via kthread, which is also
3647 * updating the if_list */
222f1806
LC		 3648 if_lock(t);
3649
3650 if (pkt_dev->pg_thread) {
f9467eae 3651 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3652 rv = -EBUSY;
3653 goto out;
3654 }
c26a8016 3655
1da177e4 3656 pkt_dev->running = 0;
8788370a
JDB		 3657 pkt_dev->pg_thread = t;
3658 list_add_rcu(&pkt_dev->list, &t->if_list);
1da177e4 3659
222f1806
LC		 3660out:
3661 if_unlock(t);
3662 return rv;
1da177e4
LT		 3663}
3664
3665/* Called under thread lock */
3666
222f1806 3667static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3668{
222f1806 3669 struct pktgen_dev *pkt_dev;
39df232f 3670 int err;
3291b9db 3671 int node = cpu_to_node(t->cpu);
222f1806 3672
1da177e4
LT		 3673 /* We don't allow a device to be on several threads */
3674
4e58a027 3675 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3676 if (pkt_dev) {
f9467eae 3677 pr_err("ERROR: interface already used\n");
222f1806
LC		 3678 return -EBUSY;
3679 }
d50a6b56 3680
3291b9db 3681 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3682 if (!pkt_dev)
3683 return -ENOMEM;
3684
593f63b0 3685 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3686 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3687 node);
d50a6b56
SH		 3688 if (pkt_dev->flows == NULL) {
3689 kfree(pkt_dev);
3690 return -ENOMEM;
3691 }
d50a6b56 3692
95ed63f7 3693 pkt_dev->removal_mark = 0;
d50a6b56 3694 pkt_dev->nfrags = 0;
fd29cf72 3695 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3696 pkt_dev->count = pg_count_d;
3697 pkt_dev->sofar = 0;
222f1806 3698 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3699 pkt_dev->udp_src_max = 9;
3700 pkt_dev->udp_dst_min = 9;
3701 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3702 pkt_dev->vlan_p = 0;
3703 pkt_dev->vlan_cfi = 0;
3704 pkt_dev->vlan_id = 0xffff;
3705 pkt_dev->svlan_p = 0;
3706 pkt_dev->svlan_cfi = 0;
3707 pkt_dev->svlan_id = 0xffff;
38b2cf29 3708 pkt_dev->burst = 1;
e99b99b4 3709 pkt_dev->node = -1;
34954ddc 3710
4e58a027 3711 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3712 if (err)
3713 goto out1;
d8873315
NH		 3714 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3715 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3716
4e58a027 3717 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3718 &pktgen_if_fops, pkt_dev);
39df232f 3719 if (!pkt_dev->entry) {
f9467eae 3720 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3721 PG_PROC_DIR, ifname);
39df232f
SH		 3722 err = -EINVAL;
3723 goto out2;
d50a6b56 3724 }
a553e4a6
JHS		 3725#ifdef CONFIG_XFRM
3726 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3727 pkt_dev->ipsproto = IPPROTO_ESP;
cf93d47e
FD		 3728
3729 /* xfrm tunnel mode needs additional dst to extract outter
3730 * ip header protocol/ttl/id field, here creat a phony one.
3731 * instead of looking for a valid rt, which definitely hurting
3732 * performance under such circumstance.
3733 */
3734 pkt_dev->dstops.family = AF_INET;
3735 pkt_dev->dst.dev = pkt_dev->odev;
3736 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3737 pkt_dev->dst.child = &pkt_dev->dst;
3738 pkt_dev->dst.ops = &pkt_dev->dstops;
a553e4a6 3739#endif
d50a6b56
SH		 3740
3741 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3742out2:
3743 dev_put(pkt_dev->odev);
3744out1:
a553e4a6
JHS		 3745#ifdef CONFIG_XFRM
3746 free_SAs(pkt_dev);
3747#endif
1d0ebfe7 3748 vfree(pkt_dev->flows);
39df232f
SH		 3749 kfree(pkt_dev);
3750 return err;
1da177e4
LT		 3751}
3752
4e58a027 3753static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3754{
cdcdbe0b 3755 struct pktgen_thread *t;
d50a6b56 3756 struct proc_dir_entry *pe;
ee74baa7 3757 struct task_struct *p;
222f1806 3758
3291b9db
ED		 3759 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3760 cpu_to_node(cpu));
222f1806 3761 if (!t) {
f9467eae 3762 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3763 return -ENOMEM;
3764 }
3765
222f1806 3766 spin_lock_init(&t->if_lock);
1da177e4 3767 t->cpu = cpu;
222f1806 3768
ee74baa7
DM		 3769 INIT_LIST_HEAD(&t->if_list);
3770
4e58a027 3771 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3772 init_completion(&t->start_done);
ee74baa7 3773
94dcf29a
ED		 3774 p = kthread_create_on_node(pktgen_thread_worker,
3775 t,
3776 cpu_to_node(cpu),
3777 "kpktgend_%d", cpu);
ee74baa7 3778 if (IS_ERR(p)) {
f9467eae 3779 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3780 list_del(&t->th_list);
3781 kfree(t);
3782 return PTR_ERR(p);
3783 }
3784 kthread_bind(p, cpu);
3785 t->tsk = p;
3786
4e58a027 3787 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3788 &pktgen_thread_fops, t);
222f1806 3789 if (!pe) {
f9467eae 3790 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3791 PG_PROC_DIR, t->tsk->comm);
3792 kthread_stop(p);
3793 list_del(&t->th_list);
222f1806
LC		 3794 kfree(t);
3795 return -EINVAL;
3796 }
d50a6b56 3797
4e58a027 3798 t->net = pn;
1fbe4b46 3799 get_task_struct(p);
ee74baa7 3800 wake_up_process(p);
d3ede327 3801 wait_for_completion(&t->start_done);
1da177e4
LT		 3802
3803 return 0;
3804}
3805
4ec93edb
YH		 3806/*
3807 * Removes a device from the thread if_list.
1da177e4 3808 */
222f1806
LC		 3809static void _rem_dev_from_if_list(struct pktgen_thread *t,
3810 struct pktgen_dev *pkt_dev)
1da177e4 3811{
c26a8016
LC		 3812 struct list_head *q, *n;
3813 struct pktgen_dev *p;
1da177e4 3814
8788370a 3815 if_lock(t);
c26a8016
LC		 3816 list_for_each_safe(q, n, &t->if_list) {
3817 p = list_entry(q, struct pktgen_dev, list);
3818 if (p == pkt_dev)
8788370a 3819 list_del_rcu(&p->list);
1da177e4 3820 }
8788370a 3821 if_unlock(t);
1da177e4
LT		 3822}
3823
222f1806
LC		 3824static int pktgen_remove_device(struct pktgen_thread *t,
3825 struct pktgen_dev *pkt_dev)
1da177e4 3826{
f9467eae 3827 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3828
222f1806 3829 if (pkt_dev->running) {
294a0b7f 3830 pr_warn("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3831 pktgen_stop_device(pkt_dev);
3832 }
3833
3834 /* Dis-associate from the interface */
1da177e4
LT		 3835
3836 if (pkt_dev->odev) {
3837 dev_put(pkt_dev->odev);
222f1806
LC		 3838 pkt_dev->odev = NULL;
3839 }
3840
8788370a
JDB		 3841 /* Remove proc before if_list entry, because add_device uses
3842 * list to determine if interface already exist, avoid race
3843 * with proc_create_data() */
ef87c5d6 3844 proc_remove(pkt_dev->entry);
1da177e4 3845
8788370a
JDB		 3846 /* And update the thread if_list */
3847 _rem_dev_from_if_list(t, pkt_dev);
3848
a553e4a6
JHS		 3849#ifdef CONFIG_XFRM
3850 free_SAs(pkt_dev);
3851#endif
1d0ebfe7 3852 vfree(pkt_dev->flows);
26ad7879
ED		 3853 if (pkt_dev->page)
3854 put_page(pkt_dev->page);
8788370a 3855 kfree_rcu(pkt_dev, rcu);
222f1806 3856 return 0;
1da177e4
LT		 3857}
3858
4e58a027 3859static int __net_init pg_net_init(struct net *net)
1da177e4 3860{
4e58a027 3861 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3862 struct proc_dir_entry *pe;
4e58a027
CW		 3863 int cpu, ret = 0;
3864
3865 pn->net = net;
3866 INIT_LIST_HEAD(&pn->pktgen_threads);
3867 pn->pktgen_exiting = false;
3868 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3869 if (!pn->proc_dir) {
3870 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3871 return -ENODEV;
4e58a027
CW		 3872 }
3873 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3874 if (pe == NULL) {
4e58a027 3875 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3876 ret = -EINVAL;
4e58a027 3877 goto remove;
222f1806 3878 }
1da177e4 3879
670c02c2 3880 for_each_online_cpu(cpu) {
8024bb24 3881 int err;
1da177e4 3882
4e58a027 3883 err = pktgen_create_thread(cpu, pn);
8024bb24 3884 if (err)
4e58a027 3885 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3886 cpu, err);
222f1806 3887 }
8024bb24 3888
4e58a027
CW		 3889 if (list_empty(&pn->pktgen_threads)) {
3890 pr_err("Initialization failed for all threads\n");
ce14f894 3891 ret = -ENODEV;
4e58a027 3892 goto remove_entry;
8024bb24
LC		 3893 }
3894
222f1806 3895 return 0;
ce14f894 3896
4e58a027
CW		 3897remove_entry:
3898 remove_proc_entry(PGCTRL, pn->proc_dir);
3899remove:
ece31ffd 3900 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3901 return ret;
1da177e4
LT		 3902}
3903
4e58a027 3904static void __net_exit pg_net_exit(struct net *net)
1da177e4 3905{
4e58a027 3906 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3907 struct pktgen_thread *t;
3908 struct list_head *q, *n;
d4b11335 3909 LIST_HEAD(list);
1da177e4 3910
222f1806 3911 /* Stop all interfaces & threads */
4e58a027 3912 pn->pktgen_exiting = true;
1da177e4 3913
c57b5468 3914 mutex_lock(&pktgen_thread_lock);
4e58a027 3915 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3916 mutex_unlock(&pktgen_thread_lock);
3917
3918 list_for_each_safe(q, n, &list) {
cdcdbe0b 3919 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3920 list_del(&t->th_list);
ee74baa7 3921 kthread_stop(t->tsk);
1fbe4b46 3922 put_task_struct(t->tsk);
ee74baa7 3923 kfree(t);
222f1806 3924 }
1da177e4 3925
4e58a027 3926 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3927 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3928}
3929
3930static struct pernet_operations pg_net_ops = {
3931 .init = pg_net_init,
3932 .exit = pg_net_exit,
3933 .id = &pg_net_id,
3934 .size = sizeof(struct pktgen_net),
3935};
3936
3937static int __init pg_init(void)
3938{
3939 int ret = 0;
1da177e4 3940
4e58a027
CW		 3941 pr_info("%s", version);
3942 ret = register_pernet_subsys(&pg_net_ops);
3943 if (ret)
3944 return ret;
3945 ret = register_netdevice_notifier(&pktgen_notifier_block);
3946 if (ret)
3947 unregister_pernet_subsys(&pg_net_ops);
3948
3949 return ret;
3950}
3951
3952static void __exit pg_cleanup(void)
3953{
3954 unregister_netdevice_notifier(&pktgen_notifier_block);
3955 unregister_pernet_subsys(&pg_net_ops);
8788370a 3956 /* Don't need rcu_barrier() due to use of kfree_rcu() */
1da177e4
LT		 3957}
3958
1da177e4
LT		 3959module_init(pg_init);
3960module_exit(pg_cleanup);
3961
c3d2f52d 3962MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3963MODULE_DESCRIPTION("Packet Generator tool");
3964MODULE_LICENSE("GPL");
c3d2f52d 3965MODULE_VERSION(VERSION);
1da177e4 3966module_param(pg_count_d, int, 0);
c3d2f52d 3967MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3968module_param(pg_delay_d, int, 0);
c3d2f52d 3969MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3970module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3971MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3972module_param(debug, int, 0);
c3d2f52d 3973MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
Linux kernel - Deliverables
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