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bnx2x: fix tunneled GSO over IPv6
[mirror_ubuntu-artful-kernel.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 *
4ec93edb 100 * Randy Dunlap fixed u64 printk compiler waring
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
43d28b65 180#define VERSION "2.74"
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 */
1da177e4
LT		 205
206/* Thread control flag bits */
6b80d6a6
SH		 207#define T_STOP (1<<0) /* Stop run */
208#define T_RUN (1<<1) /* Start run */
209#define T_REMDEVALL (1<<2) /* Remove all devs */
210#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 211
8788370a 212/* If lock -- protects updating of if_list */
1da177e4
LT		 213#define if_lock(t) spin_lock(&(t->if_lock));
214#define if_unlock(t) spin_unlock(&(t->if_lock));
215
216/* Used to help with determining the pkts on receive */
217#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 218#define PG_PROC_DIR "pktgen"
219#define PGCTRL "pgctrl"
1da177e4
LT		 220
221#define MAX_CFLOWS 65536
222
34954ddc
FF		 223#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
224#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
225
222f1806 226struct flow_state {
252e3346 227 __be32 cur_daddr;
222f1806 228 int count;
a553e4a6
JHS		 229#ifdef CONFIG_XFRM
230 struct xfrm_state *x;
231#endif
007a531b 232 __u32 flags;
1da177e4
LT		 233};
234
007a531b
JHS		 235/* flow flag bits */
236#define F_INIT (1<<0) /* flow has been initialized */
237
1da177e4 238struct pktgen_dev {
1da177e4
LT		 239 /*
240 * Try to keep frequent/infrequent used vars. separated.
241 */
39df232f
SH		 242 struct proc_dir_entry *entry; /* proc file */
243 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 244 struct list_head list; /* chaining in the thread's run-queue */
8788370a 245 struct rcu_head rcu; /* freed by RCU */
1da177e4 246
63adc6fb 247 int running; /* if false, the test will stop */
1da177e4 248
222f1806
LC		 249 /* If min != max, then we will either do a linear iteration, or
250 * we will do a random selection from within the range.
251 */
252 __u32 flags;
95ed63f7
AK		 253 int removal_mark; /* non-zero => the device is marked for
254 * removal by worker thread */
1da177e4 255
68bf9f0b
AW		 256 int min_pkt_size;
257 int max_pkt_size;
16dab72f 258 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 259 int nfrags;
26ad7879 260 struct page *page;
fd29cf72
SH		 261 u64 delay; /* nano-seconds */
262
222f1806
LC		 263 __u64 count; /* Default No packets to send */
264 __u64 sofar; /* How many pkts we've sent so far */
265 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 266 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 267
268 /* runtime counters relating to clone_skb */
222f1806
LC		 269
270 __u64 allocated_skbs;
271 __u32 clone_count;
272 int last_ok; /* Was last skb sent?
63adc6fb
SH		 273 * Or a failed transmit of some sort?
274 * This will keep sequence numbers in order
222f1806 275 */
fd29cf72
SH		 276 ktime_t next_tx;
277 ktime_t started_at;
278 ktime_t stopped_at;
279 u64 idle_acc; /* nano-seconds */
280
222f1806
LC		 281 __u32 seq_num;
282
63adc6fb
SH		 283 int clone_skb; /*
284 * Use multiple SKBs during packet gen.
285 * If this number is greater than 1, then
286 * that many copies of the same packet will be
287 * sent before a new packet is allocated.
288 * If you want to send 1024 identical packets
289 * before creating a new packet,
290 * set clone_skb to 1024.
222f1806
LC		 291 */
292
293 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
294 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
295 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
296 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
297
298 struct in6_addr in6_saddr;
299 struct in6_addr in6_daddr;
300 struct in6_addr cur_in6_daddr;
301 struct in6_addr cur_in6_saddr;
1da177e4 302 /* For ranges */
222f1806
LC		 303 struct in6_addr min_in6_daddr;
304 struct in6_addr max_in6_daddr;
305 struct in6_addr min_in6_saddr;
306 struct in6_addr max_in6_saddr;
307
308 /* If we're doing ranges, random or incremental, then this
309 * defines the min/max for those ranges.
310 */
252e3346
AV		 311 __be32 saddr_min; /* inclusive, source IP address */
312 __be32 saddr_max; /* exclusive, source IP address */
313 __be32 daddr_min; /* inclusive, dest IP address */
314 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 315
316 __u16 udp_src_min; /* inclusive, source UDP port */
317 __u16 udp_src_max; /* exclusive, source UDP port */
318 __u16 udp_dst_min; /* inclusive, dest UDP port */
319 __u16 udp_dst_max; /* exclusive, dest UDP port */
320
1ca7768c 321 /* DSCP + ECN */
63adc6fb
SH		 322 __u8 tos; /* six MSB of (former) IPv4 TOS
323 are for dscp codepoint */
324 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
325 (see RFC 3260, sec. 4) */
1ca7768c 326
ca6549af 327 /* MPLS */
95c96174 328 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 329 __be32 labels[MAX_MPLS_LABELS];
330
34954ddc
FF		 331 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
332 __u8 vlan_p;
333 __u8 vlan_cfi;
334 __u16 vlan_id; /* 0xffff means no vlan tag */
335
336 __u8 svlan_p;
337 __u8 svlan_cfi;
338 __u16 svlan_id; /* 0xffff means no svlan tag */
339
222f1806
LC		 340 __u32 src_mac_count; /* How many MACs to iterate through */
341 __u32 dst_mac_count; /* How many MACs to iterate through */
342
343 unsigned char dst_mac[ETH_ALEN];
344 unsigned char src_mac[ETH_ALEN];
345
346 __u32 cur_dst_mac_offset;
347 __u32 cur_src_mac_offset;
252e3346
AV		 348 __be32 cur_saddr;
349 __be32 cur_daddr;
66ed1e5e 350 __u16 ip_id;
222f1806
LC		 351 __u16 cur_udp_dst;
352 __u16 cur_udp_src;
45b270f8 353 __u16 cur_queue_map;
222f1806 354 __u32 cur_pkt_size;
baac8564 355 __u32 last_pkt_size;
222f1806
LC		 356
357 __u8 hh[14];
358 /* = {
359 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
360
361 We fill in SRC address later
362 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
363 0x08, 0x00
364 };
365 */
366 __u16 pad; /* pad out the hh struct to an even 16 bytes */
367
63adc6fb 368 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 369 * are transmitting the same one multiple times
370 */
63adc6fb
SH		 371 struct net_device *odev; /* The out-going device.
372 * Note that the device should have it's
373 * pg_info pointer pointing back to this
374 * device.
375 * Set when the user specifies the out-going
376 * device name (not when the inject is
377 * started as it used to do.)
378 */
593f63b0 379 char odevname[32];
1da177e4 380 struct flow_state *flows;
95c96174
ED		 381 unsigned int cflows; /* Concurrent flows (config) */
382 unsigned int lflow; /* Flow length (config) */
383 unsigned int nflows; /* accumulated flows (stats) */
384 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 385
386 u16 queue_map_min;
387 u16 queue_map_max;
9e50e3ac 388 __u32 skb_priority; /* skb priority field */
e99b99b4 389 int node; /* Memory node */
45b270f8 390
a553e4a6
JHS		 391#ifdef CONFIG_XFRM
392 __u8 ipsmode; /* IPSEC mode (config) */
393 __u8 ipsproto; /* IPSEC type (config) */
de4aee7d 394 __u32 spi;
cf93d47e
FD		 395 struct dst_entry dst;
396 struct dst_ops dstops;
a553e4a6 397#endif
39df232f 398 char result[512];
1da177e4
LT		 399};
400
401struct pktgen_hdr {
252e3346
AV		 402 __be32 pgh_magic;
403 __be32 seq_num;
404 __be32 tv_sec;
405 __be32 tv_usec;
1da177e4
LT		 406};
407
4e58a027
CW		 408
409static int pg_net_id __read_mostly;
410
411struct pktgen_net {
412 struct net *net;
413 struct proc_dir_entry *proc_dir;
414 struct list_head pktgen_threads;
415 bool pktgen_exiting;
416};
551eaff1 417
1da177e4 418struct pktgen_thread {
63adc6fb 419 spinlock_t if_lock; /* for list of devices */
c26a8016 420 struct list_head if_list; /* All device here */
cdcdbe0b 421 struct list_head th_list;
ee74baa7 422 struct task_struct *tsk;
222f1806 423 char result[512];
222f1806 424
63adc6fb
SH		 425 /* Field for thread to receive "posted" events terminate,
426 stop ifs etc. */
222f1806
LC		 427
428 u32 control;
1da177e4
LT		 429 int cpu;
430
222f1806 431 wait_queue_head_t queue;
d3ede327 432 struct completion start_done;
4e58a027 433 struct pktgen_net *net;
1da177e4
LT		 434};
435
436#define REMOVE 1
437#define FIND 0
438
c3d2f52d 439static const char version[] =
f9467eae
JP		 440 "Packet Generator for packet performance testing. "
441 "Version: " VERSION "\n";
1da177e4 442
222f1806
LC		 443static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
444static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
445static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 446 const char *ifname, bool exact);
1da177e4 447static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 448static void pktgen_run_all_threads(struct pktgen_net *pn);
449static void pktgen_reset_all_threads(struct pktgen_net *pn);
450static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 451
222f1806 452static void pktgen_stop(struct pktgen_thread *t);
1da177e4 453static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 454
1da177e4 455/* Module parameters, defaults. */
65c5b786
SH		 456static int pg_count_d __read_mostly = 1000;
457static int pg_delay_d __read_mostly;
458static int pg_clone_skb_d __read_mostly;
459static int debug __read_mostly;
1da177e4 460
222fa076 461static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 462
1da177e4
LT		 463static struct notifier_block pktgen_notifier_block = {
464 .notifier_call = pktgen_device_event,
465};
466
1da177e4 467/*
4ec93edb 468 * /proc handling functions
1da177e4
LT		 469 *
470 */
471
d50a6b56 472static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 473{
c3d2f52d 474 seq_puts(seq, version);
d50a6b56 475 return 0;
1da177e4
LT		 476}
477
63adc6fb
SH		 478static ssize_t pgctrl_write(struct file *file, const char __user *buf,
479 size_t count, loff_t *ppos)
1da177e4 480{
d50a6b56 481 char data[128];
4e58a027 482 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 483
09455747
MK		 484 if (!capable(CAP_NET_ADMIN))
485 return -EPERM;
1da177e4 486
20b0c718
MK		 487 if (count == 0)
488 return -EINVAL;
489
d50a6b56
SH		 490 if (count > sizeof(data))
491 count = sizeof(data);
1da177e4 492
09455747
MK		 493 if (copy_from_user(data, buf, count))
494 return -EFAULT;
495
20b0c718 496 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
1da177e4 497
222f1806 498 if (!strcmp(data, "stop"))
4e58a027 499 pktgen_stop_all_threads_ifs(pn);
1da177e4 500
222f1806 501 else if (!strcmp(data, "start"))
4e58a027 502 pktgen_run_all_threads(pn);
1da177e4 503
eb37b41c 504 else if (!strcmp(data, "reset"))
4e58a027 505 pktgen_reset_all_threads(pn);
eb37b41c 506
222f1806 507 else
f9467eae 508 pr_warning("Unknown command: %s\n", data);
1da177e4 509
09455747 510 return count;
1da177e4
LT		 511}
512
d50a6b56
SH		 513static int pgctrl_open(struct inode *inode, struct file *file)
514{
d9dda78b 515 return single_open(file, pgctrl_show, PDE_DATA(inode));
d50a6b56
SH		 516}
517
9a32144e 518static const struct file_operations pktgen_fops = {
222f1806
LC		 519 .owner = THIS_MODULE,
520 .open = pgctrl_open,
521 .read = seq_read,
522 .llseek = seq_lseek,
523 .write = pgctrl_write,
524 .release = single_release,
d50a6b56
SH		 525};
526
527static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 528{
648fda74 529 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 530 ktime_t stopped;
531 u64 idle;
222f1806
LC		 532
533 seq_printf(seq,
534 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
535 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
536 pkt_dev->max_pkt_size);
537
538 seq_printf(seq,
fd29cf72
SH		 539 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
540 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 541 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 542
543 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
544 pkt_dev->lflow);
545
45b270f8
RO		 546 seq_printf(seq,
547 " queue_map_min: %u queue_map_max: %u\n",
548 pkt_dev->queue_map_min,
549 pkt_dev->queue_map_max);
550
9e50e3ac
JF		 551 if (pkt_dev->skb_priority)
552 seq_printf(seq, " skb_priority: %u\n",
553 pkt_dev->skb_priority);
554
222f1806 555 if (pkt_dev->flags & F_IPV6) {
222f1806 556 seq_printf(seq,
47a0200d
AD		 557 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
558 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
559 &pkt_dev->in6_saddr,
560 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
561 &pkt_dev->in6_daddr,
562 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 563 } else {
564 seq_printf(seq,
565 " dst_min: %s dst_max: %s\n",
566 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 567 seq_printf(seq,
63adc6fb
SH		 568 " src_min: %s src_max: %s\n",
569 pkt_dev->src_min, pkt_dev->src_max);
570 }
1da177e4 571
222f1806 572 seq_puts(seq, " src_mac: ");
1da177e4 573
e174961c
JB		 574 seq_printf(seq, "%pM ",
575 is_zero_ether_addr(pkt_dev->src_mac) ?
576 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806 577
97dc48e2 578 seq_puts(seq, "dst_mac: ");
e174961c 579 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 580
581 seq_printf(seq,
63adc6fb
SH		 582 " udp_src_min: %d udp_src_max: %d"
583 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 584 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
585 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
586
587 seq_printf(seq,
ca6549af 588 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 589 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 590
ca6549af 591 if (pkt_dev->nr_labels) {
95c96174 592 unsigned int i;
97dc48e2 593 seq_puts(seq, " mpls: ");
e71a4783 594 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 595 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
596 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
597 }
598
63adc6fb 599 if (pkt_dev->vlan_id != 0xffff)
34954ddc 600 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 601 pkt_dev->vlan_id, pkt_dev->vlan_p,
602 pkt_dev->vlan_cfi);
34954ddc 603
63adc6fb 604 if (pkt_dev->svlan_id != 0xffff)
34954ddc 605 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 606 pkt_dev->svlan_id, pkt_dev->svlan_p,
607 pkt_dev->svlan_cfi);
34954ddc 608
63adc6fb 609 if (pkt_dev->tos)
1ca7768c 610 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 611
63adc6fb 612 if (pkt_dev->traffic_class)
1ca7768c 613 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 614
e99b99b4
RO		 615 if (pkt_dev->node >= 0)
616 seq_printf(seq, " node: %d\n", pkt_dev->node);
617
97dc48e2 618 seq_puts(seq, " Flags: ");
ca6549af 619
222f1806 620 if (pkt_dev->flags & F_IPV6)
97dc48e2 621 seq_puts(seq, "IPV6 ");
1da177e4 622
222f1806 623 if (pkt_dev->flags & F_IPSRC_RND)
97dc48e2 624 seq_puts(seq, "IPSRC_RND ");
1da177e4 625
222f1806 626 if (pkt_dev->flags & F_IPDST_RND)
97dc48e2 627 seq_puts(seq, "IPDST_RND ");
1da177e4 628
222f1806 629 if (pkt_dev->flags & F_TXSIZE_RND)
97dc48e2 630 seq_puts(seq, "TXSIZE_RND ");
1da177e4 631
222f1806 632 if (pkt_dev->flags & F_UDPSRC_RND)
97dc48e2 633 seq_puts(seq, "UDPSRC_RND ");
1da177e4 634
222f1806 635 if (pkt_dev->flags & F_UDPDST_RND)
97dc48e2 636 seq_puts(seq, "UDPDST_RND ");
1da177e4 637
c26bf4a5 638 if (pkt_dev->flags & F_UDPCSUM)
97dc48e2 639 seq_puts(seq, "UDPCSUM ");
c26bf4a5 640
ca6549af 641 if (pkt_dev->flags & F_MPLS_RND)
97dc48e2 642 seq_puts(seq, "MPLS_RND ");
ca6549af 643
45b270f8 644 if (pkt_dev->flags & F_QUEUE_MAP_RND)
97dc48e2 645 seq_puts(seq, "QUEUE_MAP_RND ");
45b270f8 646
e6fce5b9 647 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
97dc48e2 648 seq_puts(seq, "QUEUE_MAP_CPU ");
e6fce5b9 649
007a531b
JHS		 650 if (pkt_dev->cflows) {
651 if (pkt_dev->flags & F_FLOW_SEQ)
97dc48e2 652 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
007a531b 653 else
97dc48e2 654 seq_puts(seq, "FLOW_RND ");
007a531b
JHS		 655 }
656
a553e4a6 657#ifdef CONFIG_XFRM
8101328b 658 if (pkt_dev->flags & F_IPSEC_ON) {
97dc48e2 659 seq_puts(seq, "IPSEC ");
8101328b
FD		 660 if (pkt_dev->spi)
661 seq_printf(seq, "spi:%u", pkt_dev->spi);
662 }
a553e4a6
JHS		 663#endif
664
222f1806 665 if (pkt_dev->flags & F_MACSRC_RND)
97dc48e2 666 seq_puts(seq, "MACSRC_RND ");
1da177e4 667
222f1806 668 if (pkt_dev->flags & F_MACDST_RND)
97dc48e2 669 seq_puts(seq, "MACDST_RND ");
1da177e4 670
34954ddc 671 if (pkt_dev->flags & F_VID_RND)
97dc48e2 672 seq_puts(seq, "VID_RND ");
34954ddc
FF		 673
674 if (pkt_dev->flags & F_SVID_RND)
97dc48e2 675 seq_puts(seq, "SVID_RND ");
34954ddc 676
e99b99b4 677 if (pkt_dev->flags & F_NODE)
97dc48e2 678 seq_puts(seq, "NODE_ALLOC ");
e99b99b4 679
222f1806
LC		 680 seq_puts(seq, "\n");
681
fd29cf72 682 /* not really stopped, more like last-running-at */
398f382c 683 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 684 idle = pkt_dev->idle_acc;
685 do_div(idle, NSEC_PER_USEC);
1da177e4 686
222f1806 687 seq_printf(seq,
fd29cf72 688 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 689 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 690 (unsigned long long)pkt_dev->errors);
691
692 seq_printf(seq,
693 " started: %lluus stopped: %lluus idle: %lluus\n",
694 (unsigned long long) ktime_to_us(pkt_dev->started_at),
695 (unsigned long long) ktime_to_us(stopped),
696 (unsigned long long) idle);
1da177e4 697
222f1806
LC		 698 seq_printf(seq,
699 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 700 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
701 pkt_dev->cur_src_mac_offset);
1da177e4 702
222f1806 703 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 704 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
705 &pkt_dev->cur_in6_saddr,
706 &pkt_dev->cur_in6_daddr);
222f1806 707 } else
0373a946
AW		 708 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
709 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 710
222f1806 711 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 712 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 713
45b270f8
RO		 714 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
715
222f1806 716 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 717
718 if (pkt_dev->result[0])
222f1806 719 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 720 else
97dc48e2 721 seq_puts(seq, "Result: Idle\n");
1da177e4 722
d50a6b56 723 return 0;
1da177e4
LT		 724}
725
ca6549af 726
63adc6fb
SH		 727static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
728 __u32 *num)
ca6549af
SW		 729{
730 int i = 0;
731 *num = 0;
732
e71a4783 733 for (; i < maxlen; i++) {
82fd5b5d 734 int value;
ca6549af
SW		 735 char c;
736 *num <<= 4;
737 if (get_user(c, &user_buffer[i]))
738 return -EFAULT;
82fd5b5d
AS		 739 value = hex_to_bin(c);
740 if (value >= 0)
741 *num |= value;
ca6549af
SW		 742 else
743 break;
744 }
745 return i;
746}
747
222f1806
LC		 748static int count_trail_chars(const char __user * user_buffer,
749 unsigned int maxlen)
1da177e4
LT		 750{
751 int i;
752
753 for (i = 0; i < maxlen; i++) {
222f1806
LC		 754 char c;
755 if (get_user(c, &user_buffer[i]))
756 return -EFAULT;
757 switch (c) {
1da177e4
LT		 758 case '\"':
759 case '\n':
760 case '\r':
761 case '\t':
762 case ' ':
763 case '=':
764 break;
765 default:
766 goto done;
3ff50b79 767 }
1da177e4
LT		 768 }
769done:
770 return i;
771}
772
bf0813bd
PG		 773static long num_arg(const char __user *user_buffer, unsigned long maxlen,
774 unsigned long *num)
1da177e4 775{
d6182223 776 int i;
1da177e4 777 *num = 0;
222f1806 778
d6182223 779 for (i = 0; i < maxlen; i++) {
222f1806
LC		 780 char c;
781 if (get_user(c, &user_buffer[i]))
782 return -EFAULT;
783 if ((c >= '0') && (c <= '9')) {
1da177e4 784 *num *= 10;
222f1806 785 *num += c - '0';
1da177e4
LT		 786 } else
787 break;
788 }
789 return i;
790}
791
222f1806 792static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 793{
d6182223 794 int i;
1da177e4 795
d6182223 796 for (i = 0; i < maxlen; i++) {
222f1806
LC		 797 char c;
798 if (get_user(c, &user_buffer[i]))
799 return -EFAULT;
800 switch (c) {
1da177e4
LT		 801 case '\"':
802 case '\n':
803 case '\r':
804 case '\t':
805 case ' ':
806 goto done_str;
1da177e4
LT		 807 default:
808 break;
3ff50b79 809 }
1da177e4
LT		 810 }
811done_str:
1da177e4
LT		 812 return i;
813}
814
ca6549af
SW		 815static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
816{
95c96174 817 unsigned int n = 0;
ca6549af
SW		 818 char c;
819 ssize_t i = 0;
820 int len;
821
822 pkt_dev->nr_labels = 0;
823 do {
824 __u32 tmp;
1ca7768c 825 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 826 if (len <= 0)
827 return len;
828 pkt_dev->labels[n] = htonl(tmp);
829 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
830 pkt_dev->flags |= F_MPLS_RND;
831 i += len;
832 if (get_user(c, &buffer[i]))
833 return -EFAULT;
834 i++;
835 n++;
836 if (n >= MAX_MPLS_LABELS)
837 return -E2BIG;
e71a4783 838 } while (c == ',');
ca6549af
SW		 839
840 pkt_dev->nr_labels = n;
841 return i;
842}
843
222f1806
LC		 844static ssize_t pktgen_if_write(struct file *file,
845 const char __user * user_buffer, size_t count,
846 loff_t * offset)
1da177e4 847{
8a994a71 848 struct seq_file *seq = file->private_data;
222f1806 849 struct pktgen_dev *pkt_dev = seq->private;
d6182223 850 int i, max, len;
1da177e4
LT		 851 char name[16], valstr[32];
852 unsigned long value = 0;
222f1806
LC		 853 char *pg_result = NULL;
854 int tmp = 0;
1da177e4 855 char buf[128];
222f1806
LC		 856
857 pg_result = &(pkt_dev->result[0]);
858
1da177e4 859 if (count < 1) {
f9467eae 860 pr_warning("wrong command format\n");
1da177e4
LT		 861 return -EINVAL;
862 }
222f1806 863
d6182223
PG		 864 max = count;
865 tmp = count_trail_chars(user_buffer, max);
222f1806 866 if (tmp < 0) {
f9467eae 867 pr_warning("illegal format\n");
222f1806 868 return tmp;
1da177e4 869 }
d6182223 870 i = tmp;
222f1806 871
1da177e4
LT		 872 /* Read variable name */
873
874 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 875 if (len < 0)
222f1806 876 return len;
63adc6fb 877
1da177e4 878 memset(name, 0, sizeof(name));
222f1806 879 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 880 return -EFAULT;
881 i += len;
222f1806
LC		 882
883 max = count - i;
1da177e4 884 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 885 if (len < 0)
886 return len;
887
1da177e4
LT		 888 i += len;
889
890 if (debug) {
86c2c0a8 891 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 892 char tb[copy + 1];
893 if (copy_from_user(tb, user_buffer, copy))
1da177e4 894 return -EFAULT;
448d7b5d 895 tb[copy] = 0;
f342cda7
JP		 896 pr_debug("%s,%lu buffer -:%s:-\n",
897 name, (unsigned long)count, tb);
222f1806 898 }
1da177e4
LT		 899
900 if (!strcmp(name, "min_pkt_size")) {
901 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 902 if (len < 0)
222f1806 903 return len;
63adc6fb 904
1da177e4 905 i += len;
222f1806
LC		 906 if (value < 14 + 20 + 8)
907 value = 14 + 20 + 8;
908 if (value != pkt_dev->min_pkt_size) {
909 pkt_dev->min_pkt_size = value;
910 pkt_dev->cur_pkt_size = value;
911 }
912 sprintf(pg_result, "OK: min_pkt_size=%u",
913 pkt_dev->min_pkt_size);
1da177e4
LT		 914 return count;
915 }
916
222f1806 917 if (!strcmp(name, "max_pkt_size")) {
1da177e4 918 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 919 if (len < 0)
222f1806 920 return len;
63adc6fb 921
1da177e4 922 i += len;
222f1806
LC		 923 if (value < 14 + 20 + 8)
924 value = 14 + 20 + 8;
925 if (value != pkt_dev->max_pkt_size) {
926 pkt_dev->max_pkt_size = value;
927 pkt_dev->cur_pkt_size = value;
928 }
929 sprintf(pg_result, "OK: max_pkt_size=%u",
930 pkt_dev->max_pkt_size);
1da177e4
LT		 931 return count;
932 }
933
222f1806 934 /* Shortcut for min = max */
1da177e4
LT		 935
936 if (!strcmp(name, "pkt_size")) {
937 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 938 if (len < 0)
222f1806 939 return len;
63adc6fb 940
1da177e4 941 i += len;
222f1806
LC		 942 if (value < 14 + 20 + 8)
943 value = 14 + 20 + 8;
944 if (value != pkt_dev->min_pkt_size) {
945 pkt_dev->min_pkt_size = value;
946 pkt_dev->max_pkt_size = value;
947 pkt_dev->cur_pkt_size = value;
948 }
1da177e4
LT		 949 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
950 return count;
951 }
952
222f1806 953 if (!strcmp(name, "debug")) {
1da177e4 954 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 955 if (len < 0)
222f1806 956 return len;
63adc6fb 957
1da177e4 958 i += len;
222f1806 959 debug = value;
1da177e4
LT		 960 sprintf(pg_result, "OK: debug=%u", debug);
961 return count;
962 }
963
222f1806 964 if (!strcmp(name, "frags")) {
1da177e4 965 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 966 if (len < 0)
222f1806 967 return len;
63adc6fb 968
1da177e4
LT		 969 i += len;
970 pkt_dev->nfrags = value;
971 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
972 return count;
973 }
974 if (!strcmp(name, "delay")) {
975 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 976 if (len < 0)
222f1806 977 return len;
63adc6fb 978
1da177e4 979 i += len;
fd29cf72
SH		 980 if (value == 0x7FFFFFFF)
981 pkt_dev->delay = ULLONG_MAX;
982 else
9240d715 983 pkt_dev->delay = (u64)value;
fd29cf72
SH		 984
985 sprintf(pg_result, "OK: delay=%llu",
986 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 987 return count;
988 }
43d28b65
DT		 989 if (!strcmp(name, "rate")) {
990 len = num_arg(&user_buffer[i], 10, &value);
991 if (len < 0)
992 return len;
993
994 i += len;
995 if (!value)
996 return len;
997 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
998 if (debug)
f9467eae 999 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1000
1001 sprintf(pg_result, "OK: rate=%lu", value);
1002 return count;
1003 }
1004 if (!strcmp(name, "ratep")) {
1005 len = num_arg(&user_buffer[i], 10, &value);
1006 if (len < 0)
1007 return len;
1008
1009 i += len;
1010 if (!value)
1011 return len;
1012 pkt_dev->delay = NSEC_PER_SEC/value;
1013 if (debug)
f9467eae 1014 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1015
1016 sprintf(pg_result, "OK: rate=%lu", value);
1017 return count;
1018 }
222f1806 1019 if (!strcmp(name, "udp_src_min")) {
1da177e4 1020 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1021 if (len < 0)
222f1806 1022 return len;
63adc6fb 1023
1da177e4 1024 i += len;
222f1806
LC		 1025 if (value != pkt_dev->udp_src_min) {
1026 pkt_dev->udp_src_min = value;
1027 pkt_dev->cur_udp_src = value;
1028 }
1da177e4
LT		 1029 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1030 return count;
1031 }
222f1806 1032 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1033 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1034 if (len < 0)
222f1806 1035 return len;
63adc6fb 1036
1da177e4 1037 i += len;
222f1806
LC		 1038 if (value != pkt_dev->udp_dst_min) {
1039 pkt_dev->udp_dst_min = value;
1040 pkt_dev->cur_udp_dst = value;
1041 }
1da177e4
LT		 1042 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1043 return count;
1044 }
222f1806 1045 if (!strcmp(name, "udp_src_max")) {
1da177e4 1046 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1047 if (len < 0)
222f1806 1048 return len;
63adc6fb 1049
1da177e4 1050 i += len;
222f1806
LC		 1051 if (value != pkt_dev->udp_src_max) {
1052 pkt_dev->udp_src_max = value;
1053 pkt_dev->cur_udp_src = value;
1054 }
1da177e4
LT		 1055 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1056 return count;
1057 }
222f1806 1058 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1059 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1060 if (len < 0)
222f1806 1061 return len;
63adc6fb 1062
1da177e4 1063 i += len;
222f1806
LC		 1064 if (value != pkt_dev->udp_dst_max) {
1065 pkt_dev->udp_dst_max = value;
1066 pkt_dev->cur_udp_dst = value;
1067 }
1da177e4
LT		 1068 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1069 return count;
1070 }
1071 if (!strcmp(name, "clone_skb")) {
1072 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1073 if (len < 0)
222f1806 1074 return len;
d8873315
NH		 1075 if ((value > 0) &&
1076 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1077 return -ENOTSUPP;
1da177e4 1078 i += len;
222f1806
LC		 1079 pkt_dev->clone_skb = value;
1080
1da177e4
LT		 1081 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1082 return count;
1083 }
1084 if (!strcmp(name, "count")) {
1085 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1086 if (len < 0)
222f1806 1087 return len;
63adc6fb 1088
1da177e4
LT		 1089 i += len;
1090 pkt_dev->count = value;
1091 sprintf(pg_result, "OK: count=%llu",
222f1806 1092 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1093 return count;
1094 }
1095 if (!strcmp(name, "src_mac_count")) {
1096 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1097 if (len < 0)
222f1806 1098 return len;
63adc6fb 1099
1da177e4
LT		 1100 i += len;
1101 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1102 pkt_dev->src_mac_count = value;
1103 pkt_dev->cur_src_mac_offset = 0;
1104 }
1105 sprintf(pg_result, "OK: src_mac_count=%d",
1106 pkt_dev->src_mac_count);
1da177e4
LT		 1107 return count;
1108 }
1109 if (!strcmp(name, "dst_mac_count")) {
1110 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1111 if (len < 0)
222f1806 1112 return len;
63adc6fb 1113
1da177e4
LT		 1114 i += len;
1115 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1116 pkt_dev->dst_mac_count = value;
1117 pkt_dev->cur_dst_mac_offset = 0;
1118 }
1119 sprintf(pg_result, "OK: dst_mac_count=%d",
1120 pkt_dev->dst_mac_count);
1da177e4
LT		 1121 return count;
1122 }
e99b99b4
RO		 1123 if (!strcmp(name, "node")) {
1124 len = num_arg(&user_buffer[i], 10, &value);
1125 if (len < 0)
1126 return len;
1127
1128 i += len;
1129
1130 if (node_possible(value)) {
1131 pkt_dev->node = value;
1132 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1133 if (pkt_dev->page) {
1134 put_page(pkt_dev->page);
1135 pkt_dev->page = NULL;
1136 }
e99b99b4
RO		 1137 }
1138 else
1139 sprintf(pg_result, "ERROR: node not possible");
1140 return count;
1141 }
1da177e4 1142 if (!strcmp(name, "flag")) {
222f1806
LC		 1143 char f[32];
1144 memset(f, 0, 32);
1da177e4 1145 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1146 if (len < 0)
222f1806 1147 return len;
63adc6fb 1148
1da177e4
LT		 1149 if (copy_from_user(f, &user_buffer[i], len))
1150 return -EFAULT;
1151 i += len;
222f1806
LC		 1152 if (strcmp(f, "IPSRC_RND") == 0)
1153 pkt_dev->flags |= F_IPSRC_RND;
1154
1155 else if (strcmp(f, "!IPSRC_RND") == 0)
1156 pkt_dev->flags &= ~F_IPSRC_RND;
1157
1158 else if (strcmp(f, "TXSIZE_RND") == 0)
1159 pkt_dev->flags |= F_TXSIZE_RND;
1160
1161 else if (strcmp(f, "!TXSIZE_RND") == 0)
1162 pkt_dev->flags &= ~F_TXSIZE_RND;
1163
1164 else if (strcmp(f, "IPDST_RND") == 0)
1165 pkt_dev->flags |= F_IPDST_RND;
1166
1167 else if (strcmp(f, "!IPDST_RND") == 0)
1168 pkt_dev->flags &= ~F_IPDST_RND;
1169
1170 else if (strcmp(f, "UDPSRC_RND") == 0)
1171 pkt_dev->flags |= F_UDPSRC_RND;
1172
1173 else if (strcmp(f, "!UDPSRC_RND") == 0)
1174 pkt_dev->flags &= ~F_UDPSRC_RND;
1175
1176 else if (strcmp(f, "UDPDST_RND") == 0)
1177 pkt_dev->flags |= F_UDPDST_RND;
1178
1179 else if (strcmp(f, "!UDPDST_RND") == 0)
1180 pkt_dev->flags &= ~F_UDPDST_RND;
1181
1182 else if (strcmp(f, "MACSRC_RND") == 0)
1183 pkt_dev->flags |= F_MACSRC_RND;
1184
1185 else if (strcmp(f, "!MACSRC_RND") == 0)
1186 pkt_dev->flags &= ~F_MACSRC_RND;
1187
1188 else if (strcmp(f, "MACDST_RND") == 0)
1189 pkt_dev->flags |= F_MACDST_RND;
1190
1191 else if (strcmp(f, "!MACDST_RND") == 0)
1192 pkt_dev->flags &= ~F_MACDST_RND;
1193
ca6549af
SW		 1194 else if (strcmp(f, "MPLS_RND") == 0)
1195 pkt_dev->flags |= F_MPLS_RND;
1196
1197 else if (strcmp(f, "!MPLS_RND") == 0)
1198 pkt_dev->flags &= ~F_MPLS_RND;
1199
34954ddc
FF		 1200 else if (strcmp(f, "VID_RND") == 0)
1201 pkt_dev->flags |= F_VID_RND;
1202
1203 else if (strcmp(f, "!VID_RND") == 0)
1204 pkt_dev->flags &= ~F_VID_RND;
1205
1206 else if (strcmp(f, "SVID_RND") == 0)
1207 pkt_dev->flags |= F_SVID_RND;
1208
1209 else if (strcmp(f, "!SVID_RND") == 0)
1210 pkt_dev->flags &= ~F_SVID_RND;
1211
007a531b
JHS		 1212 else if (strcmp(f, "FLOW_SEQ") == 0)
1213 pkt_dev->flags |= F_FLOW_SEQ;
1214
45b270f8
RO		 1215 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1216 pkt_dev->flags |= F_QUEUE_MAP_RND;
1217
1218 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1219 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1220
1221 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1222 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1223
1224 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1225 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1226#ifdef CONFIG_XFRM
1227 else if (strcmp(f, "IPSEC") == 0)
1228 pkt_dev->flags |= F_IPSEC_ON;
1229#endif
1230
1ca7768c
FF		 1231 else if (strcmp(f, "!IPV6") == 0)
1232 pkt_dev->flags &= ~F_IPV6;
1233
e99b99b4
RO		 1234 else if (strcmp(f, "NODE_ALLOC") == 0)
1235 pkt_dev->flags |= F_NODE;
1236
1237 else if (strcmp(f, "!NODE_ALLOC") == 0)
1238 pkt_dev->flags &= ~F_NODE;
1239
c26bf4a5
TG		 1240 else if (strcmp(f, "UDPCSUM") == 0)
1241 pkt_dev->flags |= F_UDPCSUM;
1242
1243 else if (strcmp(f, "!UDPCSUM") == 0)
1244 pkt_dev->flags &= ~F_UDPCSUM;
1245
222f1806
LC		 1246 else {
1247 sprintf(pg_result,
1248 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1249 f,
1ca7768c 1250 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
72f8e06f
MK		 1251 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1252 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1253 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
1254#ifdef CONFIG_XFRM
1255 "IPSEC, "
1256#endif
1257 "NODE_ALLOC\n");
222f1806
LC		 1258 return count;
1259 }
1da177e4
LT		 1260 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1261 return count;
1262 }
1263 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1264 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1265 if (len < 0)
222f1806 1266 return len;
1da177e4 1267
222f1806 1268 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1269 return -EFAULT;
222f1806
LC		 1270 buf[len] = 0;
1271 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1272 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1273 strncpy(pkt_dev->dst_min, buf, len);
1274 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1275 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1276 }
1277 if (debug)
f342cda7 1278 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1279 i += len;
1da177e4
LT		 1280 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1281 return count;
1282 }
1283 if (!strcmp(name, "dst_max")) {
1284 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1285 if (len < 0)
222f1806 1286 return len;
63adc6fb 1287
1da177e4 1288
222f1806 1289 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1290 return -EFAULT;
1291
222f1806
LC		 1292 buf[len] = 0;
1293 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1294 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1295 strncpy(pkt_dev->dst_max, buf, len);
1296 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1297 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1298 }
1299 if (debug)
f342cda7 1300 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1301 i += len;
1302 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1303 return count;
1304 }
1305 if (!strcmp(name, "dst6")) {
1306 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1307 if (len < 0)
1308 return len;
1da177e4
LT		 1309
1310 pkt_dev->flags |= F_IPV6;
1311
222f1806 1312 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1313 return -EFAULT;
222f1806 1314 buf[len] = 0;
1da177e4 1315
c468fb13 1316 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1317 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1318
4e3fd7a0 1319 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1320
222f1806 1321 if (debug)
f342cda7 1322 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1323
222f1806 1324 i += len;
1da177e4
LT		 1325 sprintf(pg_result, "OK: dst6=%s", buf);
1326 return count;
1327 }
1328 if (!strcmp(name, "dst6_min")) {
1329 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1330 if (len < 0)
1331 return len;
1da177e4
LT		 1332
1333 pkt_dev->flags |= F_IPV6;
1334
222f1806 1335 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1336 return -EFAULT;
222f1806 1337 buf[len] = 0;
1da177e4 1338
c468fb13 1339 in6_pton(buf, -1, pkt_dev->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1340 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1341
4e3fd7a0 1342 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1343 if (debug)
f342cda7 1344 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1345
222f1806 1346 i += len;
1da177e4
LT		 1347 sprintf(pg_result, "OK: dst6_min=%s", buf);
1348 return count;
1349 }
1350 if (!strcmp(name, "dst6_max")) {
1351 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1352 if (len < 0)
1353 return len;
1da177e4
LT		 1354
1355 pkt_dev->flags |= F_IPV6;
1356
222f1806 1357 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1358 return -EFAULT;
222f1806 1359 buf[len] = 0;
1da177e4 1360
c468fb13 1361 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1362 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1363
222f1806 1364 if (debug)
f342cda7 1365 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1366
222f1806 1367 i += len;
1da177e4
LT		 1368 sprintf(pg_result, "OK: dst6_max=%s", buf);
1369 return count;
1370 }
1371 if (!strcmp(name, "src6")) {
1372 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1373 if (len < 0)
1374 return len;
1da177e4
LT		 1375
1376 pkt_dev->flags |= F_IPV6;
1377
222f1806 1378 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1379 return -EFAULT;
222f1806 1380 buf[len] = 0;
1da177e4 1381
c468fb13 1382 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1383 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1384
4e3fd7a0 1385 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1386
222f1806 1387 if (debug)
f342cda7 1388 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1389
1390 i += len;
1da177e4
LT		 1391 sprintf(pg_result, "OK: src6=%s", buf);
1392 return count;
1393 }
1394 if (!strcmp(name, "src_min")) {
1395 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1396 if (len < 0)
222f1806 1397 return len;
63adc6fb 1398
222f1806 1399 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1400 return -EFAULT;
222f1806
LC		 1401 buf[len] = 0;
1402 if (strcmp(buf, pkt_dev->src_min) != 0) {
1403 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1404 strncpy(pkt_dev->src_min, buf, len);
1405 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1406 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1407 }
1408 if (debug)
f342cda7 1409 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1410 i += len;
1411 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1412 return count;
1413 }
1414 if (!strcmp(name, "src_max")) {
1415 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1416 if (len < 0)
222f1806 1417 return len;
63adc6fb 1418
222f1806 1419 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1420 return -EFAULT;
222f1806
LC		 1421 buf[len] = 0;
1422 if (strcmp(buf, pkt_dev->src_max) != 0) {
1423 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1424 strncpy(pkt_dev->src_max, buf, len);
1425 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1426 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1427 }
1428 if (debug)
f342cda7 1429 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1430 i += len;
1431 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1432 return count;
1433 }
1434 if (!strcmp(name, "dst_mac")) {
1da177e4 1435 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1436 if (len < 0)
222f1806 1437 return len;
63adc6fb 1438
1da177e4 1439 memset(valstr, 0, sizeof(valstr));
222f1806 1440 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1441 return -EFAULT;
1da177e4 1442
4940fc88
AD		 1443 if (!mac_pton(valstr, pkt_dev->dst_mac))
1444 return -EINVAL;
1da177e4 1445 /* Set up Dest MAC */
9ea08b12 1446 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
222f1806 1447
4940fc88 1448 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1449 return count;
1450 }
1451 if (!strcmp(name, "src_mac")) {
1da177e4 1452 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1453 if (len < 0)
222f1806 1454 return len;
63adc6fb 1455
1da177e4 1456 memset(valstr, 0, sizeof(valstr));
222f1806 1457 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1458 return -EFAULT;
1da177e4 1459
4940fc88
AD		 1460 if (!mac_pton(valstr, pkt_dev->src_mac))
1461 return -EINVAL;
ce5d0b47 1462 /* Set up Src MAC */
9ea08b12 1463 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
ce5d0b47 1464
4940fc88 1465 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1466 return count;
1467 }
1468
222f1806
LC		 1469 if (!strcmp(name, "clear_counters")) {
1470 pktgen_clear_counters(pkt_dev);
1471 sprintf(pg_result, "OK: Clearing counters.\n");
1472 return count;
1473 }
1da177e4
LT		 1474
1475 if (!strcmp(name, "flows")) {
1476 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1477 if (len < 0)
222f1806 1478 return len;
63adc6fb 1479
1da177e4
LT		 1480 i += len;
1481 if (value > MAX_CFLOWS)
1482 value = MAX_CFLOWS;
1483
1484 pkt_dev->cflows = value;
1485 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1486 return count;
1487 }
6bae9190 1488#ifdef CONFIG_XFRM
de4aee7d
FD		 1489 if (!strcmp(name, "spi")) {
1490 len = num_arg(&user_buffer[i], 10, &value);
1491 if (len < 0)
1492 return len;
1493
1494 i += len;
1495 pkt_dev->spi = value;
1496 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1497 return count;
1498 }
6bae9190 1499#endif
1da177e4
LT		 1500 if (!strcmp(name, "flowlen")) {
1501 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1502 if (len < 0)
222f1806 1503 return len;
63adc6fb 1504
1da177e4
LT		 1505 i += len;
1506 pkt_dev->lflow = value;
1507 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1508 return count;
1509 }
222f1806 1510
45b270f8
RO		 1511 if (!strcmp(name, "queue_map_min")) {
1512 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1513 if (len < 0)
45b270f8 1514 return len;
63adc6fb 1515
45b270f8
RO		 1516 i += len;
1517 pkt_dev->queue_map_min = value;
1518 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1519 return count;
1520 }
1521
1522 if (!strcmp(name, "queue_map_max")) {
1523 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1524 if (len < 0)
45b270f8 1525 return len;
63adc6fb 1526
45b270f8
RO		 1527 i += len;
1528 pkt_dev->queue_map_max = value;
1529 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1530 return count;
1531 }
1532
ca6549af 1533 if (!strcmp(name, "mpls")) {
95c96174 1534 unsigned int n, cnt;
cfcabdcc 1535
ca6549af 1536 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1537 if (len < 0)
1538 return len;
ca6549af 1539 i += len;
cfcabdcc 1540 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1541 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1542 cnt += sprintf(pg_result + cnt,
1543 "%08x%s", ntohl(pkt_dev->labels[n]),
1544 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1545
1546 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1547 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1548 pkt_dev->svlan_id = 0xffff;
1549
1550 if (debug)
f342cda7 1551 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1552 }
1553 return count;
1554 }
1555
1556 if (!strcmp(name, "vlan_id")) {
1557 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1558 if (len < 0)
34954ddc 1559 return len;
63adc6fb 1560
34954ddc
FF		 1561 i += len;
1562 if (value <= 4095) {
1563 pkt_dev->vlan_id = value; /* turn on VLAN */
1564
1565 if (debug)
f342cda7 1566 pr_debug("VLAN turned on\n");
34954ddc
FF		 1567
1568 if (debug && pkt_dev->nr_labels)
f342cda7 1569 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1570
1571 pkt_dev->nr_labels = 0; /* turn off MPLS */
1572 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1573 } else {
1574 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1575 pkt_dev->svlan_id = 0xffff;
1576
1577 if (debug)
f342cda7 1578 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1579 }
1580 return count;
1581 }
1582
1583 if (!strcmp(name, "vlan_p")) {
1584 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1585 if (len < 0)
34954ddc 1586 return len;
63adc6fb 1587
34954ddc
FF		 1588 i += len;
1589 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1590 pkt_dev->vlan_p = value;
1591 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1592 } else {
1593 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1594 }
1595 return count;
1596 }
1597
1598 if (!strcmp(name, "vlan_cfi")) {
1599 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1600 if (len < 0)
34954ddc 1601 return len;
63adc6fb 1602
34954ddc
FF		 1603 i += len;
1604 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1605 pkt_dev->vlan_cfi = value;
1606 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1607 } else {
1608 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1609 }
1610 return count;
1611 }
1612
1613 if (!strcmp(name, "svlan_id")) {
1614 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1615 if (len < 0)
34954ddc 1616 return len;
63adc6fb 1617
34954ddc
FF		 1618 i += len;
1619 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1620 pkt_dev->svlan_id = value; /* turn on SVLAN */
1621
1622 if (debug)
f342cda7 1623 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1624
1625 if (debug && pkt_dev->nr_labels)
f342cda7 1626 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1627
1628 pkt_dev->nr_labels = 0; /* turn off MPLS */
1629 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1630 } else {
1631 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1632 pkt_dev->svlan_id = 0xffff;
1633
1634 if (debug)
f342cda7 1635 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1636 }
1637 return count;
1638 }
1639
1640 if (!strcmp(name, "svlan_p")) {
1641 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1642 if (len < 0)
34954ddc 1643 return len;
63adc6fb 1644
34954ddc
FF		 1645 i += len;
1646 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1647 pkt_dev->svlan_p = value;
1648 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1649 } else {
1650 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1651 }
1652 return count;
1653 }
1654
1655 if (!strcmp(name, "svlan_cfi")) {
1656 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1657 if (len < 0)
34954ddc 1658 return len;
63adc6fb 1659
34954ddc
FF		 1660 i += len;
1661 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1662 pkt_dev->svlan_cfi = value;
1663 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1664 } else {
1665 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1666 }
ca6549af
SW		 1667 return count;
1668 }
1669
1ca7768c
FF		 1670 if (!strcmp(name, "tos")) {
1671 __u32 tmp_value = 0;
1672 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1673 if (len < 0)
1ca7768c 1674 return len;
63adc6fb 1675
1ca7768c
FF		 1676 i += len;
1677 if (len == 2) {
1678 pkt_dev->tos = tmp_value;
1679 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1680 } else {
1681 sprintf(pg_result, "ERROR: tos must be 00-ff");
1682 }
1683 return count;
1684 }
1685
1686 if (!strcmp(name, "traffic_class")) {
1687 __u32 tmp_value = 0;
1688 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1689 if (len < 0)
1ca7768c 1690 return len;
63adc6fb 1691
1ca7768c
FF		 1692 i += len;
1693 if (len == 2) {
1694 pkt_dev->traffic_class = tmp_value;
1695 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1696 } else {
1697 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1698 }
1699 return count;
1700 }
1701
9e50e3ac
JF		 1702 if (!strcmp(name, "skb_priority")) {
1703 len = num_arg(&user_buffer[i], 9, &value);
1704 if (len < 0)
1705 return len;
1706
1707 i += len;
1708 pkt_dev->skb_priority = value;
1709 sprintf(pg_result, "OK: skb_priority=%i",
1710 pkt_dev->skb_priority);
1711 return count;
1712 }
1713
1da177e4
LT		 1714 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1715 return -EINVAL;
1716}
1717
d50a6b56 1718static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1719{
d9dda78b 1720 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1721}
1da177e4 1722
9a32144e 1723static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1724 .owner = THIS_MODULE,
1725 .open = pktgen_if_open,
1726 .read = seq_read,
1727 .llseek = seq_lseek,
1728 .write = pktgen_if_write,
1729 .release = single_release,
d50a6b56 1730};
1da177e4 1731
d50a6b56
SH		 1732static int pktgen_thread_show(struct seq_file *seq, void *v)
1733{
222f1806 1734 struct pktgen_thread *t = seq->private;
648fda74 1735 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1736
1737 BUG_ON(!t);
1da177e4 1738
97dc48e2 1739 seq_puts(seq, "Running: ");
1da177e4 1740
8788370a
JDB		 1741 rcu_read_lock();
1742 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1743 if (pkt_dev->running)
593f63b0 1744 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1745
97dc48e2 1746 seq_puts(seq, "\nStopped: ");
222f1806 1747
8788370a 1748 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1749 if (!pkt_dev->running)
593f63b0 1750 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1751
1752 if (t->result[0])
d50a6b56 1753 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1754 else
97dc48e2 1755 seq_puts(seq, "\nResult: NA\n");
1da177e4 1756
8788370a 1757 rcu_read_unlock();
1da177e4 1758
d50a6b56 1759 return 0;
1da177e4
LT		 1760}
1761
d50a6b56 1762static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1763 const char __user * user_buffer,
1764 size_t count, loff_t * offset)
1da177e4 1765{
8a994a71 1766 struct seq_file *seq = file->private_data;
222f1806 1767 struct pktgen_thread *t = seq->private;
d6182223 1768 int i, max, len, ret;
1da177e4 1769 char name[40];
222f1806 1770 char *pg_result;
d50a6b56 1771
1da177e4 1772 if (count < 1) {
222f1806 1773 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1774 return -EINVAL;
1775 }
d50a6b56 1776
d6182223
PG		 1777 max = count;
1778 len = count_trail_chars(user_buffer, max);
222f1806 1779 if (len < 0)
d50a6b56
SH		 1780 return len;
1781
d6182223 1782 i = len;
d50a6b56 1783
1da177e4
LT		 1784 /* Read variable name */
1785
1786 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1787 if (len < 0)
d50a6b56 1788 return len;
222f1806 1789
1da177e4
LT		 1790 memset(name, 0, sizeof(name));
1791 if (copy_from_user(name, &user_buffer[i], len))
1792 return -EFAULT;
1793 i += len;
d50a6b56 1794
222f1806 1795 max = count - i;
1da177e4 1796 len = count_trail_chars(&user_buffer[i], max);
222f1806 1797 if (len < 0)
d50a6b56
SH		 1798 return len;
1799
1da177e4
LT		 1800 i += len;
1801
d50a6b56 1802 if (debug)
f342cda7 1803 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1804
222f1806 1805 if (!t) {
f9467eae 1806 pr_err("ERROR: No thread\n");
1da177e4
LT		 1807 ret = -EINVAL;
1808 goto out;
1809 }
1810
1811 pg_result = &(t->result[0]);
1812
222f1806
LC		 1813 if (!strcmp(name, "add_device")) {
1814 char f[32];
1815 memset(f, 0, 32);
1da177e4 1816 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1817 if (len < 0) {
1818 ret = len;
1da177e4
LT		 1819 goto out;
1820 }
222f1806 1821 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1822 return -EFAULT;
1823 i += len;
6146e6a4 1824 mutex_lock(&pktgen_thread_lock);
604dfd6e 1825 ret = pktgen_add_device(t, f);
6146e6a4 1826 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1827 if (!ret) {
1828 ret = count;
1829 sprintf(pg_result, "OK: add_device=%s", f);
1830 } else
1831 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1832 goto out;
1833 }
1834
222f1806 1835 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1836 mutex_lock(&pktgen_thread_lock);
95ed63f7 1837 t->control |= T_REMDEVALL;
6146e6a4 1838 mutex_unlock(&pktgen_thread_lock);
222f1806 1839 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1840 ret = count;
222f1806 1841 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1842 goto out;
1843 }
1844
222f1806 1845 if (!strcmp(name, "max_before_softirq")) {
b163911f 1846 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1847 ret = count;
1da177e4
LT		 1848 goto out;
1849 }
1850
1851 ret = -EINVAL;
222f1806 1852out:
1da177e4
LT		 1853 return ret;
1854}
1855
d50a6b56 1856static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1857{
d9dda78b 1858 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT		 1859}
1860
9a32144e 1861static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1862 .owner = THIS_MODULE,
1863 .open = pktgen_thread_open,
1864 .read = seq_read,
1865 .llseek = seq_lseek,
1866 .write = pktgen_thread_write,
1867 .release = single_release,
d50a6b56 1868};
1da177e4
LT		 1869
1870/* Think find or remove for NN */
4e58a027
CW		 1871static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1872 const char *ifname, int remove)
1da177e4
LT		 1873{
1874 struct pktgen_thread *t;
1875 struct pktgen_dev *pkt_dev = NULL;
3e984840 1876 bool exact = (remove == FIND);
1da177e4 1877
4e58a027 1878 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1879 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1880 if (pkt_dev) {
222f1806 1881 if (remove) {
222f1806
LC		 1882 pkt_dev->removal_mark = 1;
1883 t->control |= T_REMDEV;
222f1806 1884 }
1da177e4
LT		 1885 break;
1886 }
1da177e4 1887 }
222f1806 1888 return pkt_dev;
1da177e4
LT		 1889}
1890
95ed63f7
AK		 1891/*
1892 * mark a device for removal
1893 */
4e58a027 1894static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1895{
1896 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1897 const int max_tries = 10, msec_per_try = 125;
1898 int i = 0;
95ed63f7 1899
6146e6a4 1900 mutex_lock(&pktgen_thread_lock);
f9467eae 1901 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1902
222f1806 1903 while (1) {
95ed63f7 1904
4e58a027 1905 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1906 if (pkt_dev == NULL)
1907 break; /* success */
95ed63f7 1908
6146e6a4 1909 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1910 pr_debug("%s: waiting for %s to disappear....\n",
1911 __func__, ifname);
95ed63f7 1912 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1913 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1914
1915 if (++i >= max_tries) {
f9467eae
JP		 1916 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1917 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1918 break;
1919 }
1920
1921 }
1922
6146e6a4 1923 mutex_unlock(&pktgen_thread_lock);
39df232f 1924}
95ed63f7 1925
4e58a027 1926static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 1927{
1928 struct pktgen_thread *t;
1929
4e58a027 1930 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 1931 struct pktgen_dev *pkt_dev;
1932
8788370a
JDB		 1933 rcu_read_lock();
1934 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
39df232f
SH		 1935 if (pkt_dev->odev != dev)
1936 continue;
1937
a8ca16ea 1938 proc_remove(pkt_dev->entry);
39df232f 1939
2975315b 1940 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1941 pn->proc_dir,
2975315b
AD		 1942 &pktgen_if_fops,
1943 pkt_dev);
39df232f 1944 if (!pkt_dev->entry)
f9467eae
JP		 1945 pr_err("can't move proc entry for '%s'\n",
1946 dev->name);
39df232f
SH		 1947 break;
1948 }
8788370a 1949 rcu_read_unlock();
39df232f 1950 }
1da177e4
LT		 1951}
1952
222f1806
LC		 1953static int pktgen_device_event(struct notifier_block *unused,
1954 unsigned long event, void *ptr)
1da177e4 1955{
351638e7 1956 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 1957 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1958
4e58a027 1959 if (pn->pktgen_exiting)
e9dc8653
EB		 1960 return NOTIFY_DONE;
1961
1da177e4
LT		 1962 /* It is OK that we do not hold the group lock right now,
1963 * as we run under the RTNL lock.
1964 */
1965
1966 switch (event) {
39df232f 1967 case NETDEV_CHANGENAME:
4e58a027 1968 pktgen_change_name(pn, dev);
1da177e4 1969 break;
222f1806 1970
1da177e4 1971 case NETDEV_UNREGISTER:
4e58a027 1972 pktgen_mark_device(pn, dev->name);
1da177e4 1973 break;
3ff50b79 1974 }
1da177e4
LT		 1975
1976 return NOTIFY_DONE;
1977}
1978
4e58a027
CW		 1979static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
1980 struct pktgen_dev *pkt_dev,
63adc6fb 1981 const char *ifname)
e6fce5b9
RO		 1982{
1983 char b[IFNAMSIZ+5];
d6182223 1984 int i;
e6fce5b9 1985
63adc6fb
SH		 1986 for (i = 0; ifname[i] != '@'; i++) {
1987 if (i == IFNAMSIZ)
e6fce5b9
RO		 1988 break;
1989
1990 b[i] = ifname[i];
1991 }
1992 b[i] = 0;
1993
4e58a027 1994 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 1995}
1996
1997
1da177e4
LT		 1998/* Associate pktgen_dev with a device. */
1999
4e58a027
CW		 2000static int pktgen_setup_dev(const struct pktgen_net *pn,
2001 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2002{
1da177e4 2003 struct net_device *odev;
39df232f 2004 int err;
1da177e4
LT		 2005
2006 /* Clean old setups */
1da177e4
LT		 2007 if (pkt_dev->odev) {
2008 dev_put(pkt_dev->odev);
222f1806
LC		 2009 pkt_dev->odev = NULL;
2010 }
1da177e4 2011
4e58a027 2012 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 2013 if (!odev) {
f9467eae 2014 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2015 return -ENODEV;
1da177e4 2016 }
39df232f 2017
1da177e4 2018 if (odev->type != ARPHRD_ETHER) {
f9467eae 2019 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2020 err = -EINVAL;
2021 } else if (!netif_running(odev)) {
f9467eae 2022 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2023 err = -ENETDOWN;
2024 } else {
2025 pkt_dev->odev = odev;
2026 return 0;
1da177e4 2027 }
1da177e4 2028
1da177e4 2029 dev_put(odev);
39df232f 2030 return err;
1da177e4
LT		 2031}
2032
2033/* Read pkt_dev from the interface and set up internal pktgen_dev
2034 * structure to have the right information to create/send packets
2035 */
2036static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2037{
64c00d81
AG		 2038 int ntxq;
2039
222f1806 2040 if (!pkt_dev->odev) {
f9467eae 2041 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2042 sprintf(pkt_dev->result,
2043 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2044 return;
2045 }
2046
64c00d81
AG		 2047 /* make sure that we don't pick a non-existing transmit queue */
2048 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2049
64c00d81 2050 if (ntxq <= pkt_dev->queue_map_min) {
f9467eae
JP		 2051 pr_warning("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2052 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2053 pkt_dev->odevname);
26e29eed 2054 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2055 }
88271660 2056 if (pkt_dev->queue_map_max >= ntxq) {
f9467eae
JP		 2057 pr_warning("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2058 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2059 pkt_dev->odevname);
26e29eed 2060 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2061 }
2062
222f1806 2063 /* Default to the interface's mac if not explicitly set. */
1da177e4 2064
f404e9a6 2065 if (is_zero_ether_addr(pkt_dev->src_mac))
9ea08b12 2066 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
1da177e4 2067
222f1806 2068 /* Set up Dest MAC */
9ea08b12 2069 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
1da177e4 2070
222f1806 2071 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2072 int i, set = 0, err = 1;
2073 struct inet6_dev *idev;
2074
68bf9f0b
AW		 2075 if (pkt_dev->min_pkt_size == 0) {
2076 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2077 + sizeof(struct udphdr)
2078 + sizeof(struct pktgen_hdr)
2079 + pkt_dev->pkt_overhead;
2080 }
2081
222f1806
LC		 2082 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2083 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2084 set = 1;
2085 break;
2086 }
2087
222f1806
LC		 2088 if (!set) {
2089
1da177e4
LT		 2090 /*
2091 * Use linklevel address if unconfigured.
2092 *
2093 * use ipv6_get_lladdr if/when it's get exported
2094 */
2095
8814c4b5 2096 rcu_read_lock();
63adc6fb
SH		 2097 idev = __in6_dev_get(pkt_dev->odev);
2098 if (idev) {
1da177e4
LT		 2099 struct inet6_ifaddr *ifp;
2100
2101 read_lock_bh(&idev->lock);
4c139b8c
AW		 2102 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2103 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2104 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2105 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2106 err = 0;
2107 break;
2108 }
2109 }
2110 read_unlock_bh(&idev->lock);
2111 }
8814c4b5 2112 rcu_read_unlock();
222f1806 2113 if (err)
f9467eae 2114 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2115 }
222f1806 2116 } else {
68bf9f0b
AW		 2117 if (pkt_dev->min_pkt_size == 0) {
2118 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2119 + sizeof(struct udphdr)
2120 + sizeof(struct pktgen_hdr)
2121 + pkt_dev->pkt_overhead;
2122 }
2123
1da177e4
LT		 2124 pkt_dev->saddr_min = 0;
2125 pkt_dev->saddr_max = 0;
2126 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2127
2128 struct in_device *in_dev;
1da177e4
LT		 2129
2130 rcu_read_lock();
e5ed6399 2131 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2132 if (in_dev) {
2133 if (in_dev->ifa_list) {
222f1806
LC		 2134 pkt_dev->saddr_min =
2135 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2136 pkt_dev->saddr_max = pkt_dev->saddr_min;
2137 }
1da177e4
LT		 2138 }
2139 rcu_read_unlock();
222f1806 2140 } else {
1da177e4
LT		 2141 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2142 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2143 }
2144
2145 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2146 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2147 }
222f1806 2148 /* Initialize current values. */
68bf9f0b
AW		 2149 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2150 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2151 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2152
222f1806
LC		 2153 pkt_dev->cur_dst_mac_offset = 0;
2154 pkt_dev->cur_src_mac_offset = 0;
2155 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2156 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2157 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2158 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2159 pkt_dev->nflows = 0;
2160}
2161
fd29cf72
SH		 2162
2163static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2164{
ef87979c 2165 ktime_t start_time, end_time;
417bc4b8 2166 s64 remaining;
2bc481cf
SH		 2167 struct hrtimer_sleeper t;
2168
2169 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2170 hrtimer_set_expires(&t.timer, spin_until);
2171
43d28b65 2172 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2173 if (remaining <= 0) {
2174 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2175 return;
417bc4b8 2176 }
2bc481cf 2177
398f382c 2178 start_time = ktime_get();
33136d12
ED		 2179 if (remaining < 100000) {
2180 /* for small delays (<100us), just loop until limit is reached */
2181 do {
398f382c
DB		 2182 end_time = ktime_get();
2183 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2184 } else {
2bc481cf
SH		 2185 /* see do_nanosleep */
2186 hrtimer_init_sleeper(&t, current);
2187 do {
2188 set_current_state(TASK_INTERRUPTIBLE);
2189 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2190 if (!hrtimer_active(&t.timer))
2191 t.task = NULL;
2192
2193 if (likely(t.task))
1da177e4 2194 schedule();
1da177e4 2195
2bc481cf
SH		 2196 hrtimer_cancel(&t.timer);
2197 } while (t.task && pkt_dev->running && !signal_pending(current));
2198 __set_current_state(TASK_RUNNING);
398f382c 2199 end_time = ktime_get();
1da177e4 2200 }
ef87979c
SH		 2201
2202 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2203 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2204}
2205
16dab72f
JHS		 2206static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2207{
a553e4a6 2208 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2209 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2210 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2211 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2212}
2213
648fda74 2214static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2215{
648fda74 2216 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2217}
2218
2219static inline int f_pick(struct pktgen_dev *pkt_dev)
2220{
2221 int flow = pkt_dev->curfl;
2222
2223 if (pkt_dev->flags & F_FLOW_SEQ) {
2224 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2225 /* reset time */
2226 pkt_dev->flows[flow].count = 0;
1211a645 2227 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2228 pkt_dev->curfl += 1;
2229 if (pkt_dev->curfl >= pkt_dev->cflows)
2230 pkt_dev->curfl = 0; /*reset */
2231 }
2232 } else {
33d7c5e5 2233 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2234 pkt_dev->curfl = flow;
007a531b 2235
1211a645 2236 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2237 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2238 pkt_dev->flows[flow].flags = 0;
2239 }
007a531b
JHS		 2240 }
2241
2242 return pkt_dev->curfl;
2243}
2244
a553e4a6
JHS		 2245
2246#ifdef CONFIG_XFRM
2247/* If there was already an IPSEC SA, we keep it as is, else
2248 * we go look for it ...
2249*/
bd55775c 2250#define DUMMY_MARK 0
fea1ab0f 2251static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2252{
2253 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2254 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6 2255 if (!x) {
c454997e
FD		 2256
2257 if (pkt_dev->spi) {
2258 /* We need as quick as possible to find the right SA
2259 * Searching with minimum criteria to archieve this.
2260 */
2261 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2262 } else {
2263 /* slow path: we dont already have xfrm_state */
2264 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2265 (xfrm_address_t *)&pkt_dev->cur_daddr,
2266 (xfrm_address_t *)&pkt_dev->cur_saddr,
2267 AF_INET,
2268 pkt_dev->ipsmode,
2269 pkt_dev->ipsproto, 0);
2270 }
a553e4a6
JHS		 2271 if (x) {
2272 pkt_dev->flows[flow].x = x;
2273 set_pkt_overhead(pkt_dev);
63adc6fb 2274 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2275 }
2276
2277 }
2278}
2279#endif
fd2ea0a7
DM		 2280static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2281{
e6fce5b9
RO		 2282
2283 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2284 pkt_dev->cur_queue_map = smp_processor_id();
2285
896a7cf8 2286 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2287 __u16 t;
2288 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2289 t = prandom_u32() %
fd2ea0a7
DM		 2290 (pkt_dev->queue_map_max -
2291 pkt_dev->queue_map_min + 1)
2292 + pkt_dev->queue_map_min;
2293 } else {
2294 t = pkt_dev->cur_queue_map + 1;
2295 if (t > pkt_dev->queue_map_max)
2296 t = pkt_dev->queue_map_min;
2297 }
2298 pkt_dev->cur_queue_map = t;
2299 }
bfdbc0ac 2300 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2301}
2302
1da177e4
LT		 2303/* Increment/randomize headers according to flags and current values
2304 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2305 */
222f1806
LC		 2306static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2307{
2308 __u32 imn;
2309 __u32 imx;
2310 int flow = 0;
1da177e4 2311
007a531b
JHS		 2312 if (pkt_dev->cflows)
2313 flow = f_pick(pkt_dev);
1da177e4
LT		 2314
2315 /* Deal with source MAC */
222f1806
LC		 2316 if (pkt_dev->src_mac_count > 1) {
2317 __u32 mc;
2318 __u32 tmp;
2319
2320 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2321 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2322 else {
2323 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2324 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2325 pkt_dev->src_mac_count)
2326 pkt_dev->cur_src_mac_offset = 0;
2327 }
2328
2329 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2330 pkt_dev->hh[11] = tmp;
2331 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2332 pkt_dev->hh[10] = tmp;
2333 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2334 pkt_dev->hh[9] = tmp;
2335 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2336 pkt_dev->hh[8] = tmp;
2337 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2338 pkt_dev->hh[7] = tmp;
2339 }
2340
2341 /* Deal with Destination MAC */
2342 if (pkt_dev->dst_mac_count > 1) {
2343 __u32 mc;
2344 __u32 tmp;
2345
2346 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2347 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2348
2349 else {
2350 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2351 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2352 pkt_dev->dst_mac_count) {
2353 pkt_dev->cur_dst_mac_offset = 0;
2354 }
2355 }
2356
2357 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2358 pkt_dev->hh[5] = tmp;
2359 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2360 pkt_dev->hh[4] = tmp;
2361 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2362 pkt_dev->hh[3] = tmp;
2363 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2364 pkt_dev->hh[2] = tmp;
2365 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2366 pkt_dev->hh[1] = tmp;
2367 }
2368
ca6549af 2369 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2370 unsigned int i;
e71a4783 2371 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2372 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2373 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2374 ((__force __be32)prandom_u32() &
ca6549af
SW		 2375 htonl(0x000fffff));
2376 }
2377
34954ddc 2378 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2379 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2380 }
2381
2382 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2383 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2384 }
2385
222f1806
LC		 2386 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2387 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2388 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2389 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2390 + pkt_dev->udp_src_min;
222f1806
LC		 2391
2392 else {
1da177e4
LT		 2393 pkt_dev->cur_udp_src++;
2394 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2395 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2396 }
2397 }
2398
2399 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2400 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2401 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2402 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2403 + pkt_dev->udp_dst_min;
222f1806 2404 } else {
1da177e4 2405 pkt_dev->cur_udp_dst++;
222f1806 2406 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2407 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2408 }
2409 }
1da177e4
LT		 2410
2411 if (!(pkt_dev->flags & F_IPV6)) {
2412
63adc6fb
SH		 2413 imn = ntohl(pkt_dev->saddr_min);
2414 imx = ntohl(pkt_dev->saddr_max);
2415 if (imn < imx) {
1da177e4 2416 __u32 t;
222f1806 2417 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2418 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2419 else {
2420 t = ntohl(pkt_dev->cur_saddr);
2421 t++;
63adc6fb 2422 if (t > imx)
1da177e4 2423 t = imn;
63adc6fb 2424
1da177e4
LT		 2425 }
2426 pkt_dev->cur_saddr = htonl(t);
2427 }
222f1806 2428
007a531b 2429 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2430 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2431 } else {
252e3346
AV		 2432 imn = ntohl(pkt_dev->daddr_min);
2433 imx = ntohl(pkt_dev->daddr_max);
2434 if (imn < imx) {
1da177e4 2435 __u32 t;
252e3346 2436 __be32 s;
1da177e4
LT		 2437 if (pkt_dev->flags & F_IPDST_RND) {
2438
70e3ba72 2439 do {
33d7c5e5
AM		 2440 t = prandom_u32() %
2441 (imx - imn) + imn;
252e3346 2442 s = htonl(t);
70e3ba72
AM		 2443 } while (ipv4_is_loopback(s) ||
2444 ipv4_is_multicast(s) ||
2445 ipv4_is_lbcast(s) ||
2446 ipv4_is_zeronet(s) ||
2447 ipv4_is_local_multicast(s));
252e3346
AV		 2448 pkt_dev->cur_daddr = s;
2449 } else {
1da177e4
LT		 2450 t = ntohl(pkt_dev->cur_daddr);
2451 t++;
2452 if (t > imx) {
2453 t = imn;
2454 }
2455 pkt_dev->cur_daddr = htonl(t);
2456 }
2457 }
222f1806 2458 if (pkt_dev->cflows) {
007a531b 2459 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2460 pkt_dev->flows[flow].cur_daddr =
2461 pkt_dev->cur_daddr;
a553e4a6
JHS		 2462#ifdef CONFIG_XFRM
2463 if (pkt_dev->flags & F_IPSEC_ON)
2464 get_ipsec_sa(pkt_dev, flow);
2465#endif
1da177e4
LT		 2466 pkt_dev->nflows++;
2467 }
2468 }
222f1806
LC		 2469 } else { /* IPV6 * */
2470
06e30411 2471 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2472 int i;
2473
2474 /* Only random destinations yet */
2475
222f1806 2476 for (i = 0; i < 4; i++) {
1da177e4 2477 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2478 (((__force __be32)prandom_u32() |
222f1806
LC		 2479 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2480 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2481 }
222f1806 2482 }
1da177e4
LT		 2483 }
2484
222f1806
LC		 2485 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2486 __u32 t;
2487 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2488 t = prandom_u32() %
5fa6fc76
SH		 2489 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2490 + pkt_dev->min_pkt_size;
222f1806 2491 } else {
1da177e4 2492 t = pkt_dev->cur_pkt_size + 1;
222f1806 2493 if (t > pkt_dev->max_pkt_size)
1da177e4 2494 t = pkt_dev->min_pkt_size;
222f1806
LC		 2495 }
2496 pkt_dev->cur_pkt_size = t;
2497 }
1da177e4 2498
fd2ea0a7 2499 set_cur_queue_map(pkt_dev);
45b270f8 2500
1da177e4
LT		 2501 pkt_dev->flows[flow].count++;
2502}
2503
a553e4a6
JHS		 2504
2505#ifdef CONFIG_XFRM
5537a055 2506static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
cf93d47e
FD		 2507
2508 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2509};
2510
a553e4a6
JHS		 2511static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2512{
2513 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2514 int err = 0;
6de9ace4 2515 struct net *net = dev_net(pkt_dev->odev);
a553e4a6
JHS		 2516
2517 if (!x)
2518 return 0;
2519 /* XXX: we dont support tunnel mode for now until
2520 * we resolve the dst issue */
cf93d47e 2521 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
a553e4a6
JHS		 2522 return 0;
2523
cf93d47e
FD		 2524 /* But when user specify an valid SPI, transformation
2525 * supports both transport/tunnel mode + ESP/AH type.
2526 */
2527 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2528 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2529
2530 rcu_read_lock_bh();
13996378 2531 err = x->outer_mode->output(x, skb);
cf93d47e 2532 rcu_read_unlock_bh();
6de9ace4
FD		 2533 if (err) {
2534 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
a553e4a6 2535 goto error;
6de9ace4 2536 }
a553e4a6 2537 err = x->type->output(x, skb);
6de9ace4
FD		 2538 if (err) {
2539 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
a553e4a6 2540 goto error;
6de9ace4 2541 }
0af0a413 2542 spin_lock_bh(&x->lock);
63adc6fb 2543 x->curlft.bytes += skb->len;
a553e4a6 2544 x->curlft.packets++;
0af0a413 2545 spin_unlock_bh(&x->lock);
a553e4a6 2546error:
a553e4a6
JHS		 2547 return err;
2548}
2549
475ac1e4 2550static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2551{
2552 if (pkt_dev->cflows) {
2553 /* let go of the SAs if we have them */
d6182223
PG		 2554 int i;
2555 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2556 struct xfrm_state *x = pkt_dev->flows[i].x;
2557 if (x) {
2558 xfrm_state_put(x);
2559 pkt_dev->flows[i].x = NULL;
2560 }
2561 }
2562 }
2563}
2564
475ac1e4 2565static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2566 struct sk_buff *skb, __be16 protocol)
2567{
2568 if (pkt_dev->flags & F_IPSEC_ON) {
2569 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2570 int nhead = 0;
2571 if (x) {
2572 int ret;
2573 __u8 *eth;
3868204d 2574 struct iphdr *iph;
2575
a553e4a6 2576 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2577 if (nhead > 0) {
a553e4a6
JHS		 2578 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2579 if (ret < 0) {
f9467eae
JP		 2580 pr_err("Error expanding ipsec packet %d\n",
2581 ret);
b4bb4ac8 2582 goto err;
a553e4a6
JHS		 2583 }
2584 }
2585
2586 /* ipsec is not expecting ll header */
2587 skb_pull(skb, ETH_HLEN);
2588 ret = pktgen_output_ipsec(skb, pkt_dev);
2589 if (ret) {
f9467eae 2590 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2591 goto err;
a553e4a6
JHS		 2592 }
2593 /* restore ll */
2594 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2595 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2596 *(u16 *) &eth[12] = protocol;
3868204d 2597
2598 /* Update IPv4 header len as well as checksum value */
2599 iph = ip_hdr(skb);
2600 iph->tot_len = htons(skb->len - ETH_HLEN);
2601 ip_send_check(iph);
a553e4a6
JHS		 2602 }
2603 }
2604 return 1;
b4bb4ac8
IJ		 2605err:
2606 kfree_skb(skb);
2607 return 0;
a553e4a6
JHS		 2608}
2609#endif
2610
ca6549af
SW		 2611static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2612{
95c96174 2613 unsigned int i;
63adc6fb 2614 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2615 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2616
ca6549af
SW		 2617 mpls--;
2618 *mpls |= MPLS_STACK_BOTTOM;
2619}
2620
0f37c605
AV		 2621static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2622 unsigned int prio)
2623{
2624 return htons(id | (cfi << 12) | (prio << 13));
2625}
2626
26ad7879
ED		 2627static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2628 int datalen)
2629{
2630 struct timeval timestamp;
2631 struct pktgen_hdr *pgh;
2632
2633 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2634 datalen -= sizeof(*pgh);
2635
2636 if (pkt_dev->nfrags <= 0) {
05aebe2e 2637 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2638 } else {
2639 int frags = pkt_dev->nfrags;
2640 int i, len;
7d36a991 2641 int frag_len;
26ad7879
ED		 2642
2643
2644 if (frags > MAX_SKB_FRAGS)
2645 frags = MAX_SKB_FRAGS;
2646 len = datalen - frags * PAGE_SIZE;
2647 if (len > 0) {
2648 memset(skb_put(skb, len), 0, len);
2649 datalen = frags * PAGE_SIZE;
2650 }
2651
2652 i = 0;
7d36a991 2653 frag_len = (datalen/frags) < PAGE_SIZE ?
2654 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2655 while (datalen > 0) {
2656 if (unlikely(!pkt_dev->page)) {
2657 int node = numa_node_id();
2658
2659 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2660 node = pkt_dev->node;
2661 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2662 if (!pkt_dev->page)
2663 break;
2664 }
a0bec1cd 2665 get_page(pkt_dev->page);
ea2ab693 2666 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2667 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2668 /*last fragment, fill rest of data*/
2669 if (i == (frags - 1))
9e903e08
ED		 2670 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2671 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2672 else
9e903e08
ED		 2673 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2674 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2675 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2676 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2677 i++;
2678 skb_shinfo(skb)->nr_frags = i;
2679 }
26ad7879
ED		 2680 }
2681
2682 /* Stamp the time, and sequence number,
2683 * convert them to network byte order
2684 */
2685 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2686 pgh->seq_num = htonl(pkt_dev->seq_num);
2687
2688 do_gettimeofday(&timestamp);
2689 pgh->tv_sec = htonl(timestamp.tv_sec);
2690 pgh->tv_usec = htonl(timestamp.tv_usec);
2691}
2692
7a6e288d
DB		 2693static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2694 struct pktgen_dev *pkt_dev,
2695 unsigned int extralen)
2696{
2697 struct sk_buff *skb = NULL;
2698 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2699 pkt_dev->pkt_overhead;
2700
2701 if (pkt_dev->flags & F_NODE) {
2702 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2703
2704 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2705 if (likely(skb)) {
2706 skb_reserve(skb, NET_SKB_PAD);
2707 skb->dev = dev;
2708 }
2709 } else {
2710 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2711 }
2712
2713 return skb;
2714}
2715
222f1806
LC		 2716static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2717 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2718{
2719 struct sk_buff *skb = NULL;
2720 __u8 *eth;
2721 struct udphdr *udph;
2722 int datalen, iplen;
2723 struct iphdr *iph;
d5f1ce9a 2724 __be16 protocol = htons(ETH_P_IP);
ca6549af 2725 __be32 *mpls;
34954ddc
FF		 2726 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2727 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2728 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2729 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2730 u16 queue_map;
ca6549af
SW		 2731
2732 if (pkt_dev->nr_labels)
d5f1ce9a 2733 protocol = htons(ETH_P_MPLS_UC);
222f1806 2734
34954ddc 2735 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2736 protocol = htons(ETH_P_8021Q);
34954ddc 2737
64053bee
RO		 2738 /* Update any of the values, used when we're incrementing various
2739 * fields.
2740 */
2741 mod_cur_headers(pkt_dev);
eb589063 2742 queue_map = pkt_dev->cur_queue_map;
64053bee 2743
7ac5459e 2744 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2745
7a6e288d 2746 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT		 2747 if (!skb) {
2748 sprintf(pkt_dev->result, "No memory");
2749 return NULL;
2750 }
2751
7a6e288d 2752 prefetchw(skb->data);
7ac5459e 2753 skb_reserve(skb, datalen);
1da177e4
LT		 2754
2755 /* Reserve for ethernet and IP header */
2756 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2757 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2758 if (pkt_dev->nr_labels)
2759 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2760
2761 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2762 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2763 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2764 *svlan_tci = build_tci(pkt_dev->svlan_id,
2765 pkt_dev->svlan_cfi,
2766 pkt_dev->svlan_p);
34954ddc 2767 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2768 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2769 }
2770 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2771 *vlan_tci = build_tci(pkt_dev->vlan_id,
2772 pkt_dev->vlan_cfi,
2773 pkt_dev->vlan_p);
34954ddc 2774 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2775 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2776 }
2777
525cebed
TG		 2778 skb_set_mac_header(skb, 0);
2779 skb_set_network_header(skb, skb->len);
2780 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2781
2782 skb_set_transport_header(skb, skb->len);
2783 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2784 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2785 skb->priority = pkt_dev->skb_priority;
2786
1da177e4 2787 memcpy(eth, pkt_dev->hh, 12);
252e3346 2788 *(__be16 *) & eth[12] = protocol;
1da177e4 2789
ca6549af
SW		 2790 /* Eth + IPh + UDPh + mpls */
2791 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2792 pkt_dev->pkt_overhead;
6af773e7 2793 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2794 datalen = sizeof(struct pktgen_hdr);
222f1806 2795
1da177e4
LT		 2796 udph->source = htons(pkt_dev->cur_udp_src);
2797 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2798 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2799 udph->check = 0;
1da177e4
LT		 2800
2801 iph->ihl = 5;
2802 iph->version = 4;
2803 iph->ttl = 32;
1ca7768c 2804 iph->tos = pkt_dev->tos;
222f1806 2805 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2806 iph->saddr = pkt_dev->cur_saddr;
2807 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2808 iph->id = htons(pkt_dev->ip_id);
2809 pkt_dev->ip_id++;
1da177e4
LT		 2810 iph->frag_off = 0;
2811 iplen = 20 + 8 + datalen;
2812 iph->tot_len = htons(iplen);
03c633e7 2813 ip_send_check(iph);
ca6549af 2814 skb->protocol = protocol;
1da177e4
LT		 2815 skb->dev = odev;
2816 skb->pkt_type = PACKET_HOST;
c26bf4a5
TG		 2817
2818 if (!(pkt_dev->flags & F_UDPCSUM)) {
2819 skb->ip_summed = CHECKSUM_NONE;
2820 } else if (odev->features & NETIF_F_V4_CSUM) {
2821 skb->ip_summed = CHECKSUM_PARTIAL;
2822 skb->csum = 0;
2823 udp4_hwcsum(skb, udph->source, udph->dest);
2824 } else {
2825 __wsum csum = udp_csum(skb);
2826
2827 /* add protocol-dependent pseudo-header */
2828 udph->check = csum_tcpudp_magic(udph->source, udph->dest,
2829 datalen + 8, IPPROTO_UDP, csum);
2830
2831 if (udph->check == 0)
2832 udph->check = CSUM_MANGLED_0;
2833 }
2834
26ad7879 2835 pktgen_finalize_skb(pkt_dev, skb, datalen);
1da177e4 2836
a553e4a6
JHS		 2837#ifdef CONFIG_XFRM
2838 if (!process_ipsec(pkt_dev, skb, protocol))
2839 return NULL;
2840#endif
2841
1da177e4
LT		 2842 return skb;
2843}
2844
222f1806
LC		 2845static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2846 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2847{
2848 struct sk_buff *skb = NULL;
2849 __u8 *eth;
2850 struct udphdr *udph;
c26bf4a5 2851 int datalen, udplen;
1da177e4 2852 struct ipv6hdr *iph;
d5f1ce9a 2853 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2854 __be32 *mpls;
34954ddc
FF		 2855 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2856 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2857 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2858 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2859 u16 queue_map;
ca6549af
SW		 2860
2861 if (pkt_dev->nr_labels)
d5f1ce9a 2862 protocol = htons(ETH_P_MPLS_UC);
64053bee 2863
34954ddc 2864 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2865 protocol = htons(ETH_P_8021Q);
34954ddc 2866
64053bee
RO		 2867 /* Update any of the values, used when we're incrementing various
2868 * fields.
2869 */
2870 mod_cur_headers(pkt_dev);
eb589063 2871 queue_map = pkt_dev->cur_queue_map;
64053bee 2872
7a6e288d 2873 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT		 2874 if (!skb) {
2875 sprintf(pkt_dev->result, "No memory");
2876 return NULL;
2877 }
2878
7a6e288d 2879 prefetchw(skb->data);
1da177e4
LT		 2880 skb_reserve(skb, 16);
2881
2882 /* Reserve for ethernet and IP header */
2883 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2884 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2885 if (pkt_dev->nr_labels)
2886 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2887
2888 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2889 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2890 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2891 *svlan_tci = build_tci(pkt_dev->svlan_id,
2892 pkt_dev->svlan_cfi,
2893 pkt_dev->svlan_p);
34954ddc 2894 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2895 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2896 }
2897 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2898 *vlan_tci = build_tci(pkt_dev->vlan_id,
2899 pkt_dev->vlan_cfi,
2900 pkt_dev->vlan_p);
34954ddc 2901 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2902 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2903 }
2904
525cebed
TG		 2905 skb_set_mac_header(skb, 0);
2906 skb_set_network_header(skb, skb->len);
2907 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2908
2909 skb_set_transport_header(skb, skb->len);
2910 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2911 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2912 skb->priority = pkt_dev->skb_priority;
1da177e4 2913
1da177e4 2914 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2915 *(__be16 *) &eth[12] = protocol;
64053bee 2916
ca6549af
SW		 2917 /* Eth + IPh + UDPh + mpls */
2918 datalen = pkt_dev->cur_pkt_size - 14 -
2919 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2920 pkt_dev->pkt_overhead;
1da177e4 2921
5aa8b572 2922 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2923 datalen = sizeof(struct pktgen_hdr);
e87cc472 2924 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2925 }
2926
c26bf4a5 2927 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT		 2928 udph->source = htons(pkt_dev->cur_udp_src);
2929 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG		 2930 udph->len = htons(udplen);
2931 udph->check = 0;
1da177e4 2932
d5f1ce9a 2933 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2934
1ca7768c
FF		 2935 if (pkt_dev->traffic_class) {
2936 /* Version + traffic class + flow (0) */
252e3346 2937 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2938 }
2939
1da177e4
LT		 2940 iph->hop_limit = 32;
2941
c26bf4a5 2942 iph->payload_len = htons(udplen);
1da177e4
LT		 2943 iph->nexthdr = IPPROTO_UDP;
2944
4e3fd7a0
AD		 2945 iph->daddr = pkt_dev->cur_in6_daddr;
2946 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2947
ca6549af 2948 skb->protocol = protocol;
1da177e4
LT		 2949 skb->dev = odev;
2950 skb->pkt_type = PACKET_HOST;
2951
c26bf4a5
TG		 2952 if (!(pkt_dev->flags & F_UDPCSUM)) {
2953 skb->ip_summed = CHECKSUM_NONE;
2954 } else if (odev->features & NETIF_F_V6_CSUM) {
2955 skb->ip_summed = CHECKSUM_PARTIAL;
2956 skb->csum_start = skb_transport_header(skb) - skb->head;
2957 skb->csum_offset = offsetof(struct udphdr, check);
2958 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2959 } else {
2960 __wsum csum = udp_csum(skb);
2961
2962 /* add protocol-dependent pseudo-header */
2963 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2964
2965 if (udph->check == 0)
2966 udph->check = CSUM_MANGLED_0;
2967 }
2968
26ad7879 2969 pktgen_finalize_skb(pkt_dev, skb, datalen);
222f1806 2970
1da177e4
LT		 2971 return skb;
2972}
2973
475ac1e4
SH		 2974static struct sk_buff *fill_packet(struct net_device *odev,
2975 struct pktgen_dev *pkt_dev)
1da177e4 2976{
222f1806 2977 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 2978 return fill_packet_ipv6(odev, pkt_dev);
2979 else
2980 return fill_packet_ipv4(odev, pkt_dev);
2981}
2982
222f1806 2983static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 2984{
222f1806
LC		 2985 pkt_dev->seq_num = 1;
2986 pkt_dev->idle_acc = 0;
1da177e4 2987 pkt_dev->sofar = 0;
222f1806
LC		 2988 pkt_dev->tx_bytes = 0;
2989 pkt_dev->errors = 0;
1da177e4
LT		 2990}
2991
2992/* Set up structure for sending pkts, clear counters */
2993
2994static void pktgen_run(struct pktgen_thread *t)
2995{
c26a8016 2996 struct pktgen_dev *pkt_dev;
1da177e4
LT		 2997 int started = 0;
2998
f9467eae 2999 func_enter();
1da177e4 3000
8788370a
JDB		 3001 rcu_read_lock();
3002 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3003
3004 /*
3005 * setup odev and create initial packet.
3006 */
3007 pktgen_setup_inject(pkt_dev);
3008
222f1806 3009 if (pkt_dev->odev) {
1da177e4 3010 pktgen_clear_counters(pkt_dev);
1da177e4 3011 pkt_dev->skb = NULL;
398f382c 3012 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 3013
16dab72f 3014 set_pkt_overhead(pkt_dev);
222f1806 3015
1da177e4 3016 strcpy(pkt_dev->result, "Starting");
8788370a 3017 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3018 started++;
222f1806 3019 } else
1da177e4
LT		 3020 strcpy(pkt_dev->result, "Error starting");
3021 }
8788370a 3022 rcu_read_unlock();
222f1806
LC		 3023 if (started)
3024 t->control &= ~(T_STOP);
1da177e4
LT		 3025}
3026
4e58a027 3027static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 3028{
cdcdbe0b 3029 struct pktgen_thread *t;
1da177e4 3030
f9467eae 3031 func_enter();
1da177e4 3032
6146e6a4 3033 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3034
4e58a027 3035 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 3036 t->control |= T_STOP;
cdcdbe0b 3037
6146e6a4 3038 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3039}
3040
648fda74 3041static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3042{
648fda74 3043 const struct pktgen_dev *pkt_dev;
1da177e4 3044
8788370a
JDB		 3045 rcu_read_lock();
3046 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
3047 if (pkt_dev->running) {
3048 rcu_read_unlock();
648fda74 3049 return 1;
8788370a
JDB		 3050 }
3051 rcu_read_unlock();
648fda74 3052 return 0;
1da177e4
LT		 3053}
3054
222f1806 3055static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3056{
222f1806 3057 while (thread_is_running(t)) {
1da177e4 3058
222f1806 3059 msleep_interruptible(100);
1da177e4 3060
222f1806
LC		 3061 if (signal_pending(current))
3062 goto signal;
222f1806 3063 }
222f1806
LC		 3064 return 1;
3065signal:
3066 return 0;
1da177e4
LT		 3067}
3068
4e58a027 3069static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3070{
cdcdbe0b 3071 struct pktgen_thread *t;
1da177e4 3072 int sig = 1;
222f1806 3073
6146e6a4 3074 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3075
4e58a027 3076 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3077 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3078 if (sig == 0)
3079 break;
1da177e4 3080 }
cdcdbe0b
LC		 3081
3082 if (sig == 0)
4e58a027 3083 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3084 t->control |= (T_STOP);
cdcdbe0b 3085
6146e6a4 3086 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3087 return sig;
3088}
3089
4e58a027 3090static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3091{
cdcdbe0b 3092 struct pktgen_thread *t;
1da177e4 3093
f9467eae 3094 func_enter();
1da177e4 3095
6146e6a4 3096 mutex_lock(&pktgen_thread_lock);
1da177e4 3097
4e58a027 3098 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3099 t->control |= (T_RUN);
cdcdbe0b 3100
6146e6a4 3101 mutex_unlock(&pktgen_thread_lock);
1da177e4 3102
63adc6fb
SH		 3103 /* Propagate thread->control */
3104 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3105
4e58a027 3106 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3107}
3108
4e58a027 3109static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3110{
3111 struct pktgen_thread *t;
3112
f9467eae 3113 func_enter();
eb37b41c
JB		 3114
3115 mutex_lock(&pktgen_thread_lock);
3116
4e58a027 3117 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3118 t->control |= (T_REMDEVALL);
3119
3120 mutex_unlock(&pktgen_thread_lock);
3121
63adc6fb
SH		 3122 /* Propagate thread->control */
3123 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3124
4e58a027 3125 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3126}
3127
1da177e4
LT		 3128static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3129{
fd29cf72 3130 __u64 bps, mbps, pps;
222f1806 3131 char *p = pkt_dev->result;
fd29cf72
SH		 3132 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3133 pkt_dev->started_at);
3134 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3135
03a14ab1 3136 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3137 (unsigned long long)ktime_to_us(elapsed),
3138 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3139 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3140 (unsigned long long)pkt_dev->sofar,
3141 pkt_dev->cur_pkt_size, nr_frags);
3142
fd29cf72
SH		 3143 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3144 ktime_to_ns(elapsed));
222f1806
LC		 3145
3146 bps = pps * 8 * pkt_dev->cur_pkt_size;
3147
3148 mbps = bps;
3149 do_div(mbps, 1000000);
3150 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3151 (unsigned long long)pps,
3152 (unsigned long long)mbps,
3153 (unsigned long long)bps,
3154 (unsigned long long)pkt_dev->errors);
1da177e4 3155}
1da177e4
LT		 3156
3157/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3158static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3159{
222f1806 3160 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3161
222f1806 3162 if (!pkt_dev->running) {
f9467eae
JP		 3163 pr_warning("interface: %s is already stopped\n",
3164 pkt_dev->odevname);
222f1806
LC		 3165 return -EINVAL;
3166 }
1da177e4 3167
8788370a 3168 pkt_dev->running = 0;
3bda06a3
SH		 3169 kfree_skb(pkt_dev->skb);
3170 pkt_dev->skb = NULL;
398f382c 3171 pkt_dev->stopped_at = ktime_get();
1da177e4 3172
95ed63f7 3173 show_results(pkt_dev, nr_frags);
1da177e4 3174
222f1806 3175 return 0;
1da177e4
LT		 3176}
3177
222f1806 3178static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3179{
c26a8016 3180 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3181
8788370a
JDB		 3182 rcu_read_lock();
3183 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3184 if (!pkt_dev->running)
222f1806
LC		 3185 continue;
3186 if (best == NULL)
c26a8016 3187 best = pkt_dev;
398f382c 3188 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3189 best = pkt_dev;
1da177e4 3190 }
8788370a
JDB		 3191 rcu_read_unlock();
3192
222f1806 3193 return best;
1da177e4
LT		 3194}
3195
222f1806
LC		 3196static void pktgen_stop(struct pktgen_thread *t)
3197{
c26a8016 3198 struct pktgen_dev *pkt_dev;
1da177e4 3199
f9467eae 3200 func_enter();
1da177e4 3201
8788370a 3202 rcu_read_lock();
1da177e4 3203
8788370a 3204 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3205 pktgen_stop_device(pkt_dev);
95ed63f7 3206 }
1da177e4 3207
8788370a 3208 rcu_read_unlock();
1da177e4
LT		 3209}
3210
95ed63f7
AK		 3211/*
3212 * one of our devices needs to be removed - find it
3213 * and remove it
3214 */
3215static void pktgen_rem_one_if(struct pktgen_thread *t)
3216{
c26a8016
LC		 3217 struct list_head *q, *n;
3218 struct pktgen_dev *cur;
95ed63f7 3219
f9467eae 3220 func_enter();
95ed63f7 3221
c26a8016
LC		 3222 list_for_each_safe(q, n, &t->if_list) {
3223 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3224
222f1806
LC		 3225 if (!cur->removal_mark)
3226 continue;
95ed63f7 3227
86dc1ad2 3228 kfree_skb(cur->skb);
95ed63f7
AK		 3229 cur->skb = NULL;
3230
3231 pktgen_remove_device(t, cur);
3232
3233 break;
3234 }
95ed63f7
AK		 3235}
3236
222f1806 3237static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3238{
c26a8016
LC		 3239 struct list_head *q, *n;
3240 struct pktgen_dev *cur;
222f1806 3241
f9467eae
JP		 3242 func_enter();
3243
222f1806 3244 /* Remove all devices, free mem */
95ed63f7 3245
c26a8016
LC		 3246 list_for_each_safe(q, n, &t->if_list) {
3247 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3248
86dc1ad2 3249 kfree_skb(cur->skb);
95ed63f7
AK		 3250 cur->skb = NULL;
3251
1da177e4
LT		 3252 pktgen_remove_device(t, cur);
3253 }
1da177e4
LT		 3254}
3255
222f1806 3256static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3257{
222f1806 3258 /* Remove from the thread list */
4e58a027 3259 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3260}
3261
ef87979c 3262static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3263{
398f382c 3264 ktime_t idle_start = ktime_get();
ef87979c 3265 schedule();
398f382c 3266 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3267}
3791decb 3268
ef87979c
SH		 3269static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3270{
398f382c 3271 ktime_t idle_start = ktime_get();
3791decb 3272
ef87979c
SH		 3273 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3274 if (signal_pending(current))
3275 break;
3276
3277 if (need_resched())
3278 pktgen_resched(pkt_dev);
3279 else
3280 cpu_relax();
3281 }
398f382c 3282 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3283}
3284
475ac1e4 3285static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3286{
00829823 3287 struct net_device *odev = pkt_dev->odev;
fd2ea0a7 3288 struct netdev_queue *txq;
1da177e4
LT		 3289 int ret;
3290
ef87979c
SH		 3291 /* If device is offline, then don't send */
3292 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3293 pktgen_stop_device(pkt_dev);
3294 return;
fd2ea0a7
DM		 3295 }
3296
ef87979c
SH		 3297 /* This is max DELAY, this has special meaning of
3298 * "never transmit"
3299 */
3300 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3301 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3302 return;
1da177e4 3303 }
222f1806 3304
ef87979c 3305 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3306 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3307 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3308 /* build a new pkt */
3309 kfree_skb(pkt_dev->skb);
3310
3311 pkt_dev->skb = fill_packet(odev, pkt_dev);
3312 if (pkt_dev->skb == NULL) {
f9467eae 3313 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3314 schedule();
3315 pkt_dev->clone_count--; /* back out increment, OOM */
3316 return;
1da177e4 3317 }
baac8564 3318 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3319 pkt_dev->allocated_skbs++;
3320 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3321 }
95ed63f7 3322
ef87979c
SH		 3323 if (pkt_dev->delay && pkt_dev->last_ok)
3324 spin(pkt_dev, pkt_dev->next_tx);
3325
10c51b56 3326 txq = skb_get_tx_queue(odev, pkt_dev->skb);
fd2ea0a7 3327
0f2eea4b
DB		 3328 local_bh_disable();
3329
3330 HARD_TX_LOCK(odev, txq, smp_processor_id());
5b8db2f5 3331
6f25cd47 3332 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
ef87979c 3333 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3334 pkt_dev->last_ok = 0;
3335 goto unlock;
3336 }
3337 atomic_inc(&(pkt_dev->skb->users));
fa2dbdc2 3338 ret = netdev_start_xmit(pkt_dev->skb, odev, txq, false);
ef87979c
SH		 3339
3340 switch (ret) {
3341 case NETDEV_TX_OK:
ef87979c
SH		 3342 pkt_dev->last_ok = 1;
3343 pkt_dev->sofar++;
3344 pkt_dev->seq_num++;
baac8564 3345 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
ef87979c 3346 break;
f466dba1
JF		 3347 case NET_XMIT_DROP:
3348 case NET_XMIT_CN:
3349 case NET_XMIT_POLICED:
3350 /* skb has been consumed */
3351 pkt_dev->errors++;
3352 break;
ef87979c 3353 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3354 net_info_ratelimited("%s xmit error: %d\n",
3355 pkt_dev->odevname, ret);
ef87979c
SH		 3356 pkt_dev->errors++;
3357 /* fallthru */
3358 case NETDEV_TX_LOCKED:
3359 case NETDEV_TX_BUSY:
3360 /* Retry it next time */
3361 atomic_dec(&(pkt_dev->skb->users));
3362 pkt_dev->last_ok = 0;
222f1806 3363 }
0835acfe 3364unlock:
0f2eea4b
DB		 3365 HARD_TX_UNLOCK(odev, txq);
3366
3367 local_bh_enable();
222f1806 3368
1da177e4
LT		 3369 /* If pkt_dev->count is zero, then run forever */
3370 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3371 pktgen_wait_for_skb(pkt_dev);
222f1806 3372
1da177e4
LT		 3373 /* Done with this */
3374 pktgen_stop_device(pkt_dev);
222f1806 3375 }
222f1806 3376}
1da177e4 3377
4ec93edb 3378/*
1da177e4
LT		 3379 * Main loop of the thread goes here
3380 */
3381
ee74baa7 3382static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3383{
3384 DEFINE_WAIT(wait);
ee74baa7 3385 struct pktgen_thread *t = arg;
222f1806 3386 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3387 int cpu = t->cpu;
1da177e4 3388
ee74baa7 3389 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3390
3391 init_waitqueue_head(&t->queue);
d3ede327 3392 complete(&t->start_done);
1da177e4 3393
f9467eae 3394 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3395
83144186
RW		 3396 set_freezable();
3397
baac167b
JDB		 3398 __set_current_state(TASK_RUNNING);
3399
ee74baa7
DM		 3400 while (!kthread_should_stop()) {
3401 pkt_dev = next_to_run(t);
1da177e4 3402
ef87979c 3403 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3404 if (t->net->pktgen_exiting)
551eaff1 3405 break;
ef87979c
SH		 3406 wait_event_interruptible_timeout(t->queue,
3407 t->control != 0,
3408 HZ/10);
1b3f720b 3409 try_to_freeze();
ef87979c 3410 continue;
ee74baa7 3411 }
1da177e4 3412
ef87979c 3413 if (likely(pkt_dev)) {
1da177e4
LT		 3414 pktgen_xmit(pkt_dev);
3415
ef87979c
SH		 3416 if (need_resched())
3417 pktgen_resched(pkt_dev);
3418 else
3419 cpu_relax();
3420 }
3421
222f1806 3422 if (t->control & T_STOP) {
1da177e4
LT		 3423 pktgen_stop(t);
3424 t->control &= ~(T_STOP);
3425 }
3426
222f1806 3427 if (t->control & T_RUN) {
1da177e4
LT		 3428 pktgen_run(t);
3429 t->control &= ~(T_RUN);
3430 }
3431
222f1806 3432 if (t->control & T_REMDEVALL) {
1da177e4 3433 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3434 t->control &= ~(T_REMDEVALL);
3435 }
3436
222f1806 3437 if (t->control & T_REMDEV) {
95ed63f7 3438 pktgen_rem_one_if(t);
1da177e4
LT		 3439 t->control &= ~(T_REMDEV);
3440 }
3441
09fe3ef4 3442 try_to_freeze();
222f1806 3443 }
baac167b 3444 set_current_state(TASK_INTERRUPTIBLE);
1da177e4 3445
f9467eae 3446 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3447 pktgen_stop(t);
1da177e4 3448
f9467eae 3449 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3450 pktgen_rem_all_ifs(t);
1da177e4 3451
f9467eae 3452 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3453 pktgen_rem_thread(t);
cdcdbe0b 3454
551eaff1
ED		 3455 /* Wait for kthread_stop */
3456 while (!kthread_should_stop()) {
3457 set_current_state(TASK_INTERRUPTIBLE);
3458 schedule();
3459 }
3460 __set_current_state(TASK_RUNNING);
3461
ee74baa7 3462 return 0;
1da177e4
LT		 3463}
3464
222f1806 3465static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3466 const char *ifname, bool exact)
1da177e4 3467{
c26a8016 3468 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3469 size_t len = strlen(ifname);
222f1806 3470
8788370a
JDB		 3471 rcu_read_lock();
3472 list_for_each_entry_rcu(p, &t->if_list, list)
3e984840
ED		 3473 if (strncmp(p->odevname, ifname, len) == 0) {
3474 if (p->odevname[len]) {
3475 if (exact || p->odevname[len] != '@')
3476 continue;
3477 }
c26a8016 3478 pkt_dev = p;
222f1806
LC		 3479 break;
3480 }
222f1806 3481
8788370a 3482 rcu_read_unlock();
f9467eae 3483 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3484 return pkt_dev;
1da177e4
LT		 3485}
3486
4ec93edb
YH		 3487/*
3488 * Adds a dev at front of if_list.
1da177e4
LT		 3489 */
3490
222f1806
LC		 3491static int add_dev_to_thread(struct pktgen_thread *t,
3492 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3493{
3494 int rv = 0;
222f1806 3495
8788370a
JDB		 3496 /* This function cannot be called concurrently, as its called
3497 * under pktgen_thread_lock mutex, but it can run from
3498 * userspace on another CPU than the kthread. The if_lock()
3499 * is used here to sync with concurrent instances of
3500 * _rem_dev_from_if_list() invoked via kthread, which is also
3501 * updating the if_list */
222f1806
LC		 3502 if_lock(t);
3503
3504 if (pkt_dev->pg_thread) {
f9467eae 3505 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3506 rv = -EBUSY;
3507 goto out;
3508 }
c26a8016 3509
1da177e4 3510 pkt_dev->running = 0;
8788370a
JDB		 3511 pkt_dev->pg_thread = t;
3512 list_add_rcu(&pkt_dev->list, &t->if_list);
1da177e4 3513
222f1806
LC		 3514out:
3515 if_unlock(t);
3516 return rv;
1da177e4
LT		 3517}
3518
3519/* Called under thread lock */
3520
222f1806 3521static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3522{
222f1806 3523 struct pktgen_dev *pkt_dev;
39df232f 3524 int err;
3291b9db 3525 int node = cpu_to_node(t->cpu);
222f1806 3526
1da177e4
LT		 3527 /* We don't allow a device to be on several threads */
3528
4e58a027 3529 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3530 if (pkt_dev) {
f9467eae 3531 pr_err("ERROR: interface already used\n");
222f1806
LC		 3532 return -EBUSY;
3533 }
d50a6b56 3534
3291b9db 3535 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3536 if (!pkt_dev)
3537 return -ENOMEM;
3538
593f63b0 3539 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3540 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3541 node);
d50a6b56
SH		 3542 if (pkt_dev->flows == NULL) {
3543 kfree(pkt_dev);
3544 return -ENOMEM;
3545 }
d50a6b56 3546
95ed63f7 3547 pkt_dev->removal_mark = 0;
d50a6b56 3548 pkt_dev->nfrags = 0;
fd29cf72 3549 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3550 pkt_dev->count = pg_count_d;
3551 pkt_dev->sofar = 0;
222f1806 3552 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3553 pkt_dev->udp_src_max = 9;
3554 pkt_dev->udp_dst_min = 9;
3555 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3556 pkt_dev->vlan_p = 0;
3557 pkt_dev->vlan_cfi = 0;
3558 pkt_dev->vlan_id = 0xffff;
3559 pkt_dev->svlan_p = 0;
3560 pkt_dev->svlan_cfi = 0;
3561 pkt_dev->svlan_id = 0xffff;
e99b99b4 3562 pkt_dev->node = -1;
34954ddc 3563
4e58a027 3564 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3565 if (err)
3566 goto out1;
d8873315
NH		 3567 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3568 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3569
4e58a027 3570 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3571 &pktgen_if_fops, pkt_dev);
39df232f 3572 if (!pkt_dev->entry) {
f9467eae 3573 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3574 PG_PROC_DIR, ifname);
39df232f
SH		 3575 err = -EINVAL;
3576 goto out2;
d50a6b56 3577 }
a553e4a6
JHS		 3578#ifdef CONFIG_XFRM
3579 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3580 pkt_dev->ipsproto = IPPROTO_ESP;
cf93d47e
FD		 3581
3582 /* xfrm tunnel mode needs additional dst to extract outter
3583 * ip header protocol/ttl/id field, here creat a phony one.
3584 * instead of looking for a valid rt, which definitely hurting
3585 * performance under such circumstance.
3586 */
3587 pkt_dev->dstops.family = AF_INET;
3588 pkt_dev->dst.dev = pkt_dev->odev;
3589 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3590 pkt_dev->dst.child = &pkt_dev->dst;
3591 pkt_dev->dst.ops = &pkt_dev->dstops;
a553e4a6 3592#endif
d50a6b56
SH		 3593
3594 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3595out2:
3596 dev_put(pkt_dev->odev);
3597out1:
a553e4a6
JHS		 3598#ifdef CONFIG_XFRM
3599 free_SAs(pkt_dev);
3600#endif
1d0ebfe7 3601 vfree(pkt_dev->flows);
39df232f
SH		 3602 kfree(pkt_dev);
3603 return err;
1da177e4
LT		 3604}
3605
4e58a027 3606static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3607{
cdcdbe0b 3608 struct pktgen_thread *t;
d50a6b56 3609 struct proc_dir_entry *pe;
ee74baa7 3610 struct task_struct *p;
222f1806 3611
3291b9db
ED		 3612 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3613 cpu_to_node(cpu));
222f1806 3614 if (!t) {
f9467eae 3615 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3616 return -ENOMEM;
3617 }
3618
222f1806 3619 spin_lock_init(&t->if_lock);
1da177e4 3620 t->cpu = cpu;
222f1806 3621
ee74baa7
DM		 3622 INIT_LIST_HEAD(&t->if_list);
3623
4e58a027 3624 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3625 init_completion(&t->start_done);
ee74baa7 3626
94dcf29a
ED		 3627 p = kthread_create_on_node(pktgen_thread_worker,
3628 t,
3629 cpu_to_node(cpu),
3630 "kpktgend_%d", cpu);
ee74baa7 3631 if (IS_ERR(p)) {
f9467eae 3632 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3633 list_del(&t->th_list);
3634 kfree(t);
3635 return PTR_ERR(p);
3636 }
3637 kthread_bind(p, cpu);
3638 t->tsk = p;
3639
4e58a027 3640 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3641 &pktgen_thread_fops, t);
222f1806 3642 if (!pe) {
f9467eae 3643 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3644 PG_PROC_DIR, t->tsk->comm);
3645 kthread_stop(p);
3646 list_del(&t->th_list);
222f1806
LC		 3647 kfree(t);
3648 return -EINVAL;
3649 }
d50a6b56 3650
4e58a027 3651 t->net = pn;
ee74baa7 3652 wake_up_process(p);
d3ede327 3653 wait_for_completion(&t->start_done);
1da177e4
LT		 3654
3655 return 0;
3656}
3657
4ec93edb
YH		 3658/*
3659 * Removes a device from the thread if_list.
1da177e4 3660 */
222f1806
LC		 3661static void _rem_dev_from_if_list(struct pktgen_thread *t,
3662 struct pktgen_dev *pkt_dev)
1da177e4 3663{
c26a8016
LC		 3664 struct list_head *q, *n;
3665 struct pktgen_dev *p;
1da177e4 3666
8788370a 3667 if_lock(t);
c26a8016
LC		 3668 list_for_each_safe(q, n, &t->if_list) {
3669 p = list_entry(q, struct pktgen_dev, list);
3670 if (p == pkt_dev)
8788370a 3671 list_del_rcu(&p->list);
1da177e4 3672 }
8788370a 3673 if_unlock(t);
1da177e4
LT		 3674}
3675
222f1806
LC		 3676static int pktgen_remove_device(struct pktgen_thread *t,
3677 struct pktgen_dev *pkt_dev)
1da177e4 3678{
f9467eae 3679 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3680
222f1806 3681 if (pkt_dev->running) {
f9467eae 3682 pr_warning("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3683 pktgen_stop_device(pkt_dev);
3684 }
3685
3686 /* Dis-associate from the interface */
1da177e4
LT		 3687
3688 if (pkt_dev->odev) {
3689 dev_put(pkt_dev->odev);
222f1806
LC		 3690 pkt_dev->odev = NULL;
3691 }
3692
8788370a
JDB		 3693 /* Remove proc before if_list entry, because add_device uses
3694 * list to determine if interface already exist, avoid race
3695 * with proc_create_data() */
39df232f 3696 if (pkt_dev->entry)
a8ca16ea 3697 proc_remove(pkt_dev->entry);
1da177e4 3698
8788370a
JDB		 3699 /* And update the thread if_list */
3700 _rem_dev_from_if_list(t, pkt_dev);
3701
a553e4a6
JHS		 3702#ifdef CONFIG_XFRM
3703 free_SAs(pkt_dev);
3704#endif
1d0ebfe7 3705 vfree(pkt_dev->flows);
26ad7879
ED		 3706 if (pkt_dev->page)
3707 put_page(pkt_dev->page);
8788370a 3708 kfree_rcu(pkt_dev, rcu);
222f1806 3709 return 0;
1da177e4
LT		 3710}
3711
4e58a027 3712static int __net_init pg_net_init(struct net *net)
1da177e4 3713{
4e58a027 3714 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3715 struct proc_dir_entry *pe;
4e58a027
CW		 3716 int cpu, ret = 0;
3717
3718 pn->net = net;
3719 INIT_LIST_HEAD(&pn->pktgen_threads);
3720 pn->pktgen_exiting = false;
3721 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3722 if (!pn->proc_dir) {
3723 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3724 return -ENODEV;
4e58a027
CW		 3725 }
3726 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3727 if (pe == NULL) {
4e58a027 3728 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3729 ret = -EINVAL;
4e58a027 3730 goto remove;
222f1806 3731 }
1da177e4 3732
670c02c2 3733 for_each_online_cpu(cpu) {
8024bb24 3734 int err;
1da177e4 3735
4e58a027 3736 err = pktgen_create_thread(cpu, pn);
8024bb24 3737 if (err)
4e58a027 3738 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3739 cpu, err);
222f1806 3740 }
8024bb24 3741
4e58a027
CW		 3742 if (list_empty(&pn->pktgen_threads)) {
3743 pr_err("Initialization failed for all threads\n");
ce14f894 3744 ret = -ENODEV;
4e58a027 3745 goto remove_entry;
8024bb24
LC		 3746 }
3747
222f1806 3748 return 0;
ce14f894 3749
4e58a027
CW		 3750remove_entry:
3751 remove_proc_entry(PGCTRL, pn->proc_dir);
3752remove:
ece31ffd 3753 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3754 return ret;
1da177e4
LT		 3755}
3756
4e58a027 3757static void __net_exit pg_net_exit(struct net *net)
1da177e4 3758{
4e58a027 3759 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3760 struct pktgen_thread *t;
3761 struct list_head *q, *n;
d4b11335 3762 LIST_HEAD(list);
1da177e4 3763
222f1806 3764 /* Stop all interfaces & threads */
4e58a027 3765 pn->pktgen_exiting = true;
1da177e4 3766
c57b5468 3767 mutex_lock(&pktgen_thread_lock);
4e58a027 3768 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3769 mutex_unlock(&pktgen_thread_lock);
3770
3771 list_for_each_safe(q, n, &list) {
cdcdbe0b 3772 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3773 list_del(&t->th_list);
ee74baa7
DM		 3774 kthread_stop(t->tsk);
3775 kfree(t);
222f1806 3776 }
1da177e4 3777
4e58a027 3778 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3779 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3780}
3781
3782static struct pernet_operations pg_net_ops = {
3783 .init = pg_net_init,
3784 .exit = pg_net_exit,
3785 .id = &pg_net_id,
3786 .size = sizeof(struct pktgen_net),
3787};
3788
3789static int __init pg_init(void)
3790{
3791 int ret = 0;
1da177e4 3792
4e58a027
CW		 3793 pr_info("%s", version);
3794 ret = register_pernet_subsys(&pg_net_ops);
3795 if (ret)
3796 return ret;
3797 ret = register_netdevice_notifier(&pktgen_notifier_block);
3798 if (ret)
3799 unregister_pernet_subsys(&pg_net_ops);
3800
3801 return ret;
3802}
3803
3804static void __exit pg_cleanup(void)
3805{
3806 unregister_netdevice_notifier(&pktgen_notifier_block);
3807 unregister_pernet_subsys(&pg_net_ops);
8788370a 3808 /* Don't need rcu_barrier() due to use of kfree_rcu() */
1da177e4
LT		 3809}
3810
1da177e4
LT		 3811module_init(pg_init);
3812module_exit(pg_cleanup);
3813
c3d2f52d 3814MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3815MODULE_DESCRIPTION("Packet Generator tool");
3816MODULE_LICENSE("GPL");
c3d2f52d 3817MODULE_VERSION(VERSION);
1da177e4 3818module_param(pg_count_d, int, 0);
c3d2f52d 3819MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3820module_param(pg_delay_d, int, 0);
c3d2f52d 3821MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3822module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3823MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3824module_param(debug, int, 0);
c3d2f52d 3825MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
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