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Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
[deliverable/linux.git] / net / core / pktgen.c
CommitLineData
1da177e4
LT		 1/*
2 * Authors:
3 * Copyright 2001, 2002 by Robert Olsson <robert.olsson@its.uu.se>
4 * Uppsala University and
5 * Swedish University of Agricultural Sciences
6 *
7 * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
8 * Ben Greear <greearb@candelatech.com>
96de0e25 9 * Jens Låås <jens.laas@data.slu.se>
1da177e4
LT		 10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 *
16 *
17 * A tool for loading the network with preconfigurated packets.
4ec93edb 18 * The tool is implemented as a linux module. Parameters are output
1da177e4
LT		 19 * device, delay (to hard_xmit), number of packets, and whether
20 * to use multiple SKBs or just the same one.
21 * pktgen uses the installed interface's output routine.
22 *
23 * Additional hacking by:
24 *
25 * Jens.Laas@data.slu.se
26 * Improved by ANK. 010120.
27 * Improved by ANK even more. 010212.
28 * MAC address typo fixed. 010417 --ro
29 * Integrated. 020301 --DaveM
30 * Added multiskb option 020301 --DaveM
31 * Scaling of results. 020417--sigurdur@linpro.no
32 * Significant re-work of the module:
33 * * Convert to threaded model to more efficiently be able to transmit
34 * and receive on multiple interfaces at once.
35 * * Converted many counters to __u64 to allow longer runs.
36 * * Allow configuration of ranges, like min/max IP address, MACs,
37 * and UDP-ports, for both source and destination, and can
38 * set to use a random distribution or sequentially walk the range.
39 * * Can now change most values after starting.
40 * * Place 12-byte packet in UDP payload with magic number,
41 * sequence number, and timestamp.
42 * * Add receiver code that detects dropped pkts, re-ordered pkts, and
43 * latencies (with micro-second) precision.
44 * * Add IOCTL interface to easily get counters & configuration.
45 * --Ben Greear <greearb@candelatech.com>
46 *
4ec93edb
YH		 47 * Renamed multiskb to clone_skb and cleaned up sending core for two distinct
48 * skb modes. A clone_skb=0 mode for Ben "ranges" work and a clone_skb != 0
1da177e4 49 * as a "fastpath" with a configurable number of clones after alloc's.
4ec93edb
YH		 50 * clone_skb=0 means all packets are allocated this also means ranges time
51 * stamps etc can be used. clone_skb=100 means 1 malloc is followed by 100
1da177e4
LT		 52 * clones.
53 *
4ec93edb 54 * Also moved to /proc/net/pktgen/
1da177e4
LT		 55 * --ro
56 *
57 * Sept 10: Fixed threading/locking. Lots of bone-headed and more clever
58 * mistakes. Also merged in DaveM's patch in the -pre6 patch.
59 * --Ben Greear <greearb@candelatech.com>
60 *
61 * Integrated to 2.5.x 021029 --Lucio Maciel (luciomaciel@zipmail.com.br)
62 *
4ec93edb 63 *
1da177e4
LT		 64 * 021124 Finished major redesign and rewrite for new functionality.
65 * See Documentation/networking/pktgen.txt for how to use this.
66 *
67 * The new operation:
4ec93edb
YH		 68 * For each CPU one thread/process is created at start. This process checks
69 * for running devices in the if_list and sends packets until count is 0 it
70 * also the thread checks the thread->control which is used for inter-process
71 * communication. controlling process "posts" operations to the threads this
8788370a
JDB		 72 * way.
73 * The if_list is RCU protected, and the if_lock remains to protect updating
74 * of if_list, from "add_device" as it invoked from userspace (via proc write).
1da177e4 75 *
4ec93edb
YH		 76 * By design there should only be *one* "controlling" process. In practice
77 * multiple write accesses gives unpredictable result. Understood by "write"
1da177e4 78 * to /proc gives result code thats should be read be the "writer".
b4099fab 79 * For practical use this should be no problem.
1da177e4 80 *
4ec93edb
YH		 81 * Note when adding devices to a specific CPU there good idea to also assign
82 * /proc/irq/XX/smp_affinity so TX-interrupts gets bound to the same CPU.
1da177e4
LT		 83 * --ro
84 *
4ec93edb 85 * Fix refcount off by one if first packet fails, potential null deref,
1da177e4
LT		 86 * memleak 030710- KJP
87 *
88 * First "ranges" functionality for ipv6 030726 --ro
89 *
90 * Included flow support. 030802 ANK.
91 *
92 * Fixed unaligned access on IA-64 Grant Grundler <grundler@parisc-linux.org>
4ec93edb 93 *
1da177e4
LT		 94 * Remove if fix from added Harald Welte <laforge@netfilter.org> 040419
95 * ia64 compilation fix from Aron Griffis <aron@hp.com> 040604
96 *
4ec93edb 97 * New xmit() return, do_div and misc clean up by Stephen Hemminger
1da177e4
LT		 98 * <shemminger@osdl.org> 040923
99 *
ca9f1fd2 100 * Randy Dunlap fixed u64 printk compiler warning
1da177e4
LT		 101 *
102 * Remove FCS from BW calculation. Lennert Buytenhek <buytenh@wantstofly.org>
103 * New time handling. Lennert Buytenhek <buytenh@wantstofly.org> 041213
104 *
4ec93edb 105 * Corrections from Nikolai Malykh (nmalykh@bilim.com)
1da177e4
LT		 106 * Removed unused flags F_SET_SRCMAC & F_SET_SRCIP 041230
107 *
4ec93edb 108 * interruptible_sleep_on_timeout() replaced Nishanth Aravamudan <nacc@us.ibm.com>
1da177e4 109 * 050103
ca6549af
SW		 110 *
111 * MPLS support by Steven Whitehouse <steve@chygwyn.com>
112 *
34954ddc
FF		 113 * 802.1Q/Q-in-Q support by Francesco Fondelli (FF) <francesco.fondelli@gmail.com>
114 *
ce5d0b47
AR		 115 * Fixed src_mac command to set source mac of packet to value specified in
116 * command by Adit Ranadive <adit.262@gmail.com>
117 *
1da177e4 118 */
f9467eae
JP		 119
120#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
121
1da177e4
LT		 122#include <linux/sys.h>
123#include <linux/types.h>
124#include <linux/module.h>
125#include <linux/moduleparam.h>
126#include <linux/kernel.h>
222fa076 127#include <linux/mutex.h>
1da177e4
LT		 128#include <linux/sched.h>
129#include <linux/slab.h>
130#include <linux/vmalloc.h>
1da177e4
LT		 131#include <linux/unistd.h>
132#include <linux/string.h>
133#include <linux/ptrace.h>
134#include <linux/errno.h>
135#include <linux/ioport.h>
136#include <linux/interrupt.h>
4fc268d2 137#include <linux/capability.h>
2bc481cf 138#include <linux/hrtimer.h>
09fe3ef4 139#include <linux/freezer.h>
1da177e4
LT		 140#include <linux/delay.h>
141#include <linux/timer.h>
cdcdbe0b 142#include <linux/list.h>
1da177e4
LT		 143#include <linux/init.h>
144#include <linux/skbuff.h>
145#include <linux/netdevice.h>
146#include <linux/inet.h>
147#include <linux/inetdevice.h>
148#include <linux/rtnetlink.h>
149#include <linux/if_arp.h>
34954ddc 150#include <linux/if_vlan.h>
1da177e4
LT		 151#include <linux/in.h>
152#include <linux/ip.h>
153#include <linux/ipv6.h>
154#include <linux/udp.h>
155#include <linux/proc_fs.h>
d50a6b56 156#include <linux/seq_file.h>
1da177e4 157#include <linux/wait.h>
f404e9a6 158#include <linux/etherdevice.h>
ee74baa7 159#include <linux/kthread.h>
268bb0ce 160#include <linux/prefetch.h>
457c4cbc 161#include <net/net_namespace.h>
1da177e4
LT		 162#include <net/checksum.h>
163#include <net/ipv6.h>
c26bf4a5 164#include <net/udp.h>
73d94e94 165#include <net/ip6_checksum.h>
1da177e4 166#include <net/addrconf.h>
a553e4a6
JHS		 167#ifdef CONFIG_XFRM
168#include <net/xfrm.h>
169#endif
4e58a027 170#include <net/netns/generic.h>
1da177e4
LT		 171#include <asm/byteorder.h>
172#include <linux/rcupdate.h>
1977f032 173#include <linux/bitops.h>
63adc6fb
SH		 174#include <linux/io.h>
175#include <linux/timex.h>
176#include <linux/uaccess.h>
1da177e4 177#include <asm/dma.h>
222f1806 178#include <asm/div64.h> /* do_div */
1da177e4 179
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 */
afb84b62 205#define F_NO_TIMESTAMP (1<<17) /* Don't timestamp packets (default TS) */
1da177e4
LT		 206
207/* Thread control flag bits */
6b80d6a6
SH		 208#define T_STOP (1<<0) /* Stop run */
209#define T_RUN (1<<1) /* Start run */
210#define T_REMDEVALL (1<<2) /* Remove all devs */
211#define T_REMDEV (1<<3) /* Remove one dev */
1da177e4 212
8788370a 213/* If lock -- protects updating of if_list */
1da177e4
LT		 214#define if_lock(t) spin_lock(&(t->if_lock));
215#define if_unlock(t) spin_unlock(&(t->if_lock));
216
217/* Used to help with determining the pkts on receive */
218#define PKTGEN_MAGIC 0xbe9be955
d50a6b56
SH		 219#define PG_PROC_DIR "pktgen"
220#define PGCTRL "pgctrl"
1da177e4
LT		 221
222#define MAX_CFLOWS 65536
223
34954ddc
FF		 224#define VLAN_TAG_SIZE(x) ((x)->vlan_id == 0xffff ? 0 : 4)
225#define SVLAN_TAG_SIZE(x) ((x)->svlan_id == 0xffff ? 0 : 4)
226
222f1806 227struct flow_state {
252e3346 228 __be32 cur_daddr;
222f1806 229 int count;
a553e4a6
JHS		 230#ifdef CONFIG_XFRM
231 struct xfrm_state *x;
232#endif
007a531b 233 __u32 flags;
1da177e4
LT		 234};
235
007a531b
JHS		 236/* flow flag bits */
237#define F_INIT (1<<0) /* flow has been initialized */
238
1da177e4 239struct pktgen_dev {
1da177e4
LT		 240 /*
241 * Try to keep frequent/infrequent used vars. separated.
242 */
39df232f
SH		 243 struct proc_dir_entry *entry; /* proc file */
244 struct pktgen_thread *pg_thread;/* the owner */
63adc6fb 245 struct list_head list; /* chaining in the thread's run-queue */
8788370a 246 struct rcu_head rcu; /* freed by RCU */
1da177e4 247
63adc6fb 248 int running; /* if false, the test will stop */
1da177e4 249
222f1806
LC		 250 /* If min != max, then we will either do a linear iteration, or
251 * we will do a random selection from within the range.
252 */
253 __u32 flags;
95ed63f7
AK		 254 int removal_mark; /* non-zero => the device is marked for
255 * removal by worker thread */
1da177e4 256
68bf9f0b
AW		 257 int min_pkt_size;
258 int max_pkt_size;
16dab72f 259 int pkt_overhead; /* overhead for MPLS, VLANs, IPSEC etc */
222f1806 260 int nfrags;
26ad7879 261 struct page *page;
fd29cf72
SH		 262 u64 delay; /* nano-seconds */
263
222f1806
LC		 264 __u64 count; /* Default No packets to send */
265 __u64 sofar; /* How many pkts we've sent so far */
266 __u64 tx_bytes; /* How many bytes we've transmitted */
f466dba1 267 __u64 errors; /* Errors when trying to transmit, */
222f1806
LC		 268
269 /* runtime counters relating to clone_skb */
222f1806
LC		 270
271 __u64 allocated_skbs;
272 __u32 clone_count;
273 int last_ok; /* Was last skb sent?
63adc6fb
SH		 274 * Or a failed transmit of some sort?
275 * This will keep sequence numbers in order
222f1806 276 */
fd29cf72
SH		 277 ktime_t next_tx;
278 ktime_t started_at;
279 ktime_t stopped_at;
280 u64 idle_acc; /* nano-seconds */
281
222f1806
LC		 282 __u32 seq_num;
283
63adc6fb
SH		 284 int clone_skb; /*
285 * Use multiple SKBs during packet gen.
286 * If this number is greater than 1, then
287 * that many copies of the same packet will be
288 * sent before a new packet is allocated.
289 * If you want to send 1024 identical packets
290 * before creating a new packet,
291 * set clone_skb to 1024.
222f1806
LC		 292 */
293
294 char dst_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
295 char dst_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
296 char src_min[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
297 char src_max[IP_NAME_SZ]; /* IP, ie 1.2.3.4 */
298
299 struct in6_addr in6_saddr;
300 struct in6_addr in6_daddr;
301 struct in6_addr cur_in6_daddr;
302 struct in6_addr cur_in6_saddr;
1da177e4 303 /* For ranges */
222f1806
LC		 304 struct in6_addr min_in6_daddr;
305 struct in6_addr max_in6_daddr;
306 struct in6_addr min_in6_saddr;
307 struct in6_addr max_in6_saddr;
308
309 /* If we're doing ranges, random or incremental, then this
310 * defines the min/max for those ranges.
311 */
252e3346
AV		 312 __be32 saddr_min; /* inclusive, source IP address */
313 __be32 saddr_max; /* exclusive, source IP address */
314 __be32 daddr_min; /* inclusive, dest IP address */
315 __be32 daddr_max; /* exclusive, dest IP address */
222f1806
LC		 316
317 __u16 udp_src_min; /* inclusive, source UDP port */
318 __u16 udp_src_max; /* exclusive, source UDP port */
319 __u16 udp_dst_min; /* inclusive, dest UDP port */
320 __u16 udp_dst_max; /* exclusive, dest UDP port */
321
1ca7768c 322 /* DSCP + ECN */
63adc6fb
SH		 323 __u8 tos; /* six MSB of (former) IPv4 TOS
324 are for dscp codepoint */
325 __u8 traffic_class; /* ditto for the (former) Traffic Class in IPv6
326 (see RFC 3260, sec. 4) */
1ca7768c 327
ca6549af 328 /* MPLS */
95c96174 329 unsigned int nr_labels; /* Depth of stack, 0 = no MPLS */
ca6549af
SW		 330 __be32 labels[MAX_MPLS_LABELS];
331
34954ddc
FF		 332 /* VLAN/SVLAN (802.1Q/Q-in-Q) */
333 __u8 vlan_p;
334 __u8 vlan_cfi;
335 __u16 vlan_id; /* 0xffff means no vlan tag */
336
337 __u8 svlan_p;
338 __u8 svlan_cfi;
339 __u16 svlan_id; /* 0xffff means no svlan tag */
340
222f1806
LC		 341 __u32 src_mac_count; /* How many MACs to iterate through */
342 __u32 dst_mac_count; /* How many MACs to iterate through */
343
344 unsigned char dst_mac[ETH_ALEN];
345 unsigned char src_mac[ETH_ALEN];
346
347 __u32 cur_dst_mac_offset;
348 __u32 cur_src_mac_offset;
252e3346
AV		 349 __be32 cur_saddr;
350 __be32 cur_daddr;
66ed1e5e 351 __u16 ip_id;
222f1806
LC		 352 __u16 cur_udp_dst;
353 __u16 cur_udp_src;
45b270f8 354 __u16 cur_queue_map;
222f1806 355 __u32 cur_pkt_size;
baac8564 356 __u32 last_pkt_size;
222f1806
LC		 357
358 __u8 hh[14];
359 /* = {
360 0x00, 0x80, 0xC8, 0x79, 0xB3, 0xCB,
361
362 We fill in SRC address later
363 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
364 0x08, 0x00
365 };
366 */
367 __u16 pad; /* pad out the hh struct to an even 16 bytes */
368
63adc6fb 369 struct sk_buff *skb; /* skb we are to transmit next, used for when we
222f1806
LC		 370 * are transmitting the same one multiple times
371 */
63adc6fb
SH		 372 struct net_device *odev; /* The out-going device.
373 * Note that the device should have it's
374 * pg_info pointer pointing back to this
375 * device.
376 * Set when the user specifies the out-going
377 * device name (not when the inject is
378 * started as it used to do.)
379 */
593f63b0 380 char odevname[32];
1da177e4 381 struct flow_state *flows;
95c96174
ED		 382 unsigned int cflows; /* Concurrent flows (config) */
383 unsigned int lflow; /* Flow length (config) */
384 unsigned int nflows; /* accumulated flows (stats) */
385 unsigned int curfl; /* current sequenced flow (state)*/
45b270f8
RO		 386
387 u16 queue_map_min;
388 u16 queue_map_max;
9e50e3ac 389 __u32 skb_priority; /* skb priority field */
38b2cf29 390 unsigned int burst; /* number of duplicated packets to burst */
e99b99b4 391 int node; /* Memory node */
45b270f8 392
a553e4a6
JHS		 393#ifdef CONFIG_XFRM
394 __u8 ipsmode; /* IPSEC mode (config) */
395 __u8 ipsproto; /* IPSEC type (config) */
de4aee7d 396 __u32 spi;
cf93d47e
FD		 397 struct dst_entry dst;
398 struct dst_ops dstops;
a553e4a6 399#endif
39df232f 400 char result[512];
1da177e4
LT		 401};
402
403struct pktgen_hdr {
252e3346
AV		 404 __be32 pgh_magic;
405 __be32 seq_num;
406 __be32 tv_sec;
407 __be32 tv_usec;
1da177e4
LT		 408};
409
4e58a027
CW		 410
411static int pg_net_id __read_mostly;
412
413struct pktgen_net {
414 struct net *net;
415 struct proc_dir_entry *proc_dir;
416 struct list_head pktgen_threads;
417 bool pktgen_exiting;
418};
551eaff1 419
1da177e4 420struct pktgen_thread {
63adc6fb 421 spinlock_t if_lock; /* for list of devices */
c26a8016 422 struct list_head if_list; /* All device here */
cdcdbe0b 423 struct list_head th_list;
ee74baa7 424 struct task_struct *tsk;
222f1806 425 char result[512];
222f1806 426
63adc6fb
SH		 427 /* Field for thread to receive "posted" events terminate,
428 stop ifs etc. */
222f1806
LC		 429
430 u32 control;
1da177e4
LT		 431 int cpu;
432
222f1806 433 wait_queue_head_t queue;
d3ede327 434 struct completion start_done;
4e58a027 435 struct pktgen_net *net;
1da177e4
LT		 436};
437
438#define REMOVE 1
439#define FIND 0
440
c3d2f52d 441static const char version[] =
f9467eae
JP		 442 "Packet Generator for packet performance testing. "
443 "Version: " VERSION "\n";
1da177e4 444
222f1806
LC		 445static int pktgen_remove_device(struct pktgen_thread *t, struct pktgen_dev *i);
446static int pktgen_add_device(struct pktgen_thread *t, const char *ifname);
447static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 448 const char *ifname, bool exact);
1da177e4 449static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
4e58a027
CW		 450static void pktgen_run_all_threads(struct pktgen_net *pn);
451static void pktgen_reset_all_threads(struct pktgen_net *pn);
452static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn);
3bda06a3 453
222f1806 454static void pktgen_stop(struct pktgen_thread *t);
1da177e4 455static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
39df232f 456
1da177e4 457/* Module parameters, defaults. */
65c5b786
SH		 458static int pg_count_d __read_mostly = 1000;
459static int pg_delay_d __read_mostly;
460static int pg_clone_skb_d __read_mostly;
461static int debug __read_mostly;
1da177e4 462
222fa076 463static DEFINE_MUTEX(pktgen_thread_lock);
1da177e4 464
1da177e4
LT		 465static struct notifier_block pktgen_notifier_block = {
466 .notifier_call = pktgen_device_event,
467};
468
1da177e4 469/*
4ec93edb 470 * /proc handling functions
1da177e4
LT		 471 *
472 */
473
d50a6b56 474static int pgctrl_show(struct seq_file *seq, void *v)
222f1806 475{
c3d2f52d 476 seq_puts(seq, version);
d50a6b56 477 return 0;
1da177e4
LT		 478}
479
63adc6fb
SH		 480static ssize_t pgctrl_write(struct file *file, const char __user *buf,
481 size_t count, loff_t *ppos)
1da177e4 482{
d50a6b56 483 char data[128];
4e58a027 484 struct pktgen_net *pn = net_generic(current->nsproxy->net_ns, pg_net_id);
1da177e4 485
09455747
MK		 486 if (!capable(CAP_NET_ADMIN))
487 return -EPERM;
1da177e4 488
20b0c718
MK		 489 if (count == 0)
490 return -EINVAL;
491
d50a6b56
SH		 492 if (count > sizeof(data))
493 count = sizeof(data);
1da177e4 494
09455747
MK		 495 if (copy_from_user(data, buf, count))
496 return -EFAULT;
497
20b0c718 498 data[count - 1] = 0; /* Strip trailing '\n' and terminate string */
1da177e4 499
222f1806 500 if (!strcmp(data, "stop"))
4e58a027 501 pktgen_stop_all_threads_ifs(pn);
1da177e4 502
222f1806 503 else if (!strcmp(data, "start"))
4e58a027 504 pktgen_run_all_threads(pn);
1da177e4 505
eb37b41c 506 else if (!strcmp(data, "reset"))
4e58a027 507 pktgen_reset_all_threads(pn);
eb37b41c 508
222f1806 509 else
294a0b7f 510 pr_warn("Unknown command: %s\n", data);
1da177e4 511
09455747 512 return count;
1da177e4
LT		 513}
514
d50a6b56
SH		 515static int pgctrl_open(struct inode *inode, struct file *file)
516{
d9dda78b 517 return single_open(file, pgctrl_show, PDE_DATA(inode));
d50a6b56
SH		 518}
519
9a32144e 520static const struct file_operations pktgen_fops = {
222f1806
LC		 521 .owner = THIS_MODULE,
522 .open = pgctrl_open,
523 .read = seq_read,
524 .llseek = seq_lseek,
525 .write = pgctrl_write,
526 .release = single_release,
d50a6b56
SH		 527};
528
529static int pktgen_if_show(struct seq_file *seq, void *v)
1da177e4 530{
648fda74 531 const struct pktgen_dev *pkt_dev = seq->private;
fd29cf72
SH		 532 ktime_t stopped;
533 u64 idle;
222f1806
LC		 534
535 seq_printf(seq,
536 "Params: count %llu min_pkt_size: %u max_pkt_size: %u\n",
537 (unsigned long long)pkt_dev->count, pkt_dev->min_pkt_size,
538 pkt_dev->max_pkt_size);
539
540 seq_printf(seq,
fd29cf72
SH		 541 " frags: %d delay: %llu clone_skb: %d ifname: %s\n",
542 pkt_dev->nfrags, (unsigned long long) pkt_dev->delay,
593f63b0 543 pkt_dev->clone_skb, pkt_dev->odevname);
222f1806
LC		 544
545 seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
546 pkt_dev->lflow);
547
45b270f8
RO		 548 seq_printf(seq,
549 " queue_map_min: %u queue_map_max: %u\n",
550 pkt_dev->queue_map_min,
551 pkt_dev->queue_map_max);
552
9e50e3ac
JF		 553 if (pkt_dev->skb_priority)
554 seq_printf(seq, " skb_priority: %u\n",
555 pkt_dev->skb_priority);
556
222f1806 557 if (pkt_dev->flags & F_IPV6) {
222f1806 558 seq_printf(seq,
47a0200d
AD		 559 " saddr: %pI6c min_saddr: %pI6c max_saddr: %pI6c\n"
560 " daddr: %pI6c min_daddr: %pI6c max_daddr: %pI6c\n",
561 &pkt_dev->in6_saddr,
562 &pkt_dev->min_in6_saddr, &pkt_dev->max_in6_saddr,
563 &pkt_dev->in6_daddr,
564 &pkt_dev->min_in6_daddr, &pkt_dev->max_in6_daddr);
63adc6fb
SH		 565 } else {
566 seq_printf(seq,
567 " dst_min: %s dst_max: %s\n",
568 pkt_dev->dst_min, pkt_dev->dst_max);
222f1806 569 seq_printf(seq,
63adc6fb
SH		 570 " src_min: %s src_max: %s\n",
571 pkt_dev->src_min, pkt_dev->src_max);
572 }
1da177e4 573
222f1806 574 seq_puts(seq, " src_mac: ");
1da177e4 575
e174961c
JB		 576 seq_printf(seq, "%pM ",
577 is_zero_ether_addr(pkt_dev->src_mac) ?
578 pkt_dev->odev->dev_addr : pkt_dev->src_mac);
222f1806 579
97dc48e2 580 seq_puts(seq, "dst_mac: ");
e174961c 581 seq_printf(seq, "%pM\n", pkt_dev->dst_mac);
222f1806
LC		 582
583 seq_printf(seq,
63adc6fb
SH		 584 " udp_src_min: %d udp_src_max: %d"
585 " udp_dst_min: %d udp_dst_max: %d\n",
222f1806
LC		 586 pkt_dev->udp_src_min, pkt_dev->udp_src_max,
587 pkt_dev->udp_dst_min, pkt_dev->udp_dst_max);
588
589 seq_printf(seq,
ca6549af 590 " src_mac_count: %d dst_mac_count: %d\n",
222f1806 591 pkt_dev->src_mac_count, pkt_dev->dst_mac_count);
1da177e4 592
ca6549af 593 if (pkt_dev->nr_labels) {
95c96174 594 unsigned int i;
97dc48e2 595 seq_puts(seq, " mpls: ");
e71a4783 596 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 597 seq_printf(seq, "%08x%s", ntohl(pkt_dev->labels[i]),
598 i == pkt_dev->nr_labels-1 ? "\n" : ", ");
599 }
600
63adc6fb 601 if (pkt_dev->vlan_id != 0xffff)
34954ddc 602 seq_printf(seq, " vlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 603 pkt_dev->vlan_id, pkt_dev->vlan_p,
604 pkt_dev->vlan_cfi);
34954ddc 605
63adc6fb 606 if (pkt_dev->svlan_id != 0xffff)
34954ddc 607 seq_printf(seq, " svlan_id: %u vlan_p: %u vlan_cfi: %u\n",
63adc6fb
SH		 608 pkt_dev->svlan_id, pkt_dev->svlan_p,
609 pkt_dev->svlan_cfi);
34954ddc 610
63adc6fb 611 if (pkt_dev->tos)
1ca7768c 612 seq_printf(seq, " tos: 0x%02x\n", pkt_dev->tos);
1ca7768c 613
63adc6fb 614 if (pkt_dev->traffic_class)
1ca7768c 615 seq_printf(seq, " traffic_class: 0x%02x\n", pkt_dev->traffic_class);
1ca7768c 616
38b2cf29
AS		 617 if (pkt_dev->burst > 1)
618 seq_printf(seq, " burst: %d\n", pkt_dev->burst);
619
e99b99b4
RO		 620 if (pkt_dev->node >= 0)
621 seq_printf(seq, " node: %d\n", pkt_dev->node);
622
97dc48e2 623 seq_puts(seq, " Flags: ");
ca6549af 624
222f1806 625 if (pkt_dev->flags & F_IPV6)
97dc48e2 626 seq_puts(seq, "IPV6 ");
1da177e4 627
222f1806 628 if (pkt_dev->flags & F_IPSRC_RND)
97dc48e2 629 seq_puts(seq, "IPSRC_RND ");
1da177e4 630
222f1806 631 if (pkt_dev->flags & F_IPDST_RND)
97dc48e2 632 seq_puts(seq, "IPDST_RND ");
1da177e4 633
222f1806 634 if (pkt_dev->flags & F_TXSIZE_RND)
97dc48e2 635 seq_puts(seq, "TXSIZE_RND ");
1da177e4 636
222f1806 637 if (pkt_dev->flags & F_UDPSRC_RND)
97dc48e2 638 seq_puts(seq, "UDPSRC_RND ");
1da177e4 639
222f1806 640 if (pkt_dev->flags & F_UDPDST_RND)
97dc48e2 641 seq_puts(seq, "UDPDST_RND ");
1da177e4 642
c26bf4a5 643 if (pkt_dev->flags & F_UDPCSUM)
97dc48e2 644 seq_puts(seq, "UDPCSUM ");
c26bf4a5 645
afb84b62
JDB		 646 if (pkt_dev->flags & F_NO_TIMESTAMP)
647 seq_puts(seq, "NO_TIMESTAMP ");
648
ca6549af 649 if (pkt_dev->flags & F_MPLS_RND)
97dc48e2 650 seq_puts(seq, "MPLS_RND ");
ca6549af 651
45b270f8 652 if (pkt_dev->flags & F_QUEUE_MAP_RND)
97dc48e2 653 seq_puts(seq, "QUEUE_MAP_RND ");
45b270f8 654
e6fce5b9 655 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
97dc48e2 656 seq_puts(seq, "QUEUE_MAP_CPU ");
e6fce5b9 657
007a531b
JHS		 658 if (pkt_dev->cflows) {
659 if (pkt_dev->flags & F_FLOW_SEQ)
97dc48e2 660 seq_puts(seq, "FLOW_SEQ "); /*in sequence flows*/
007a531b 661 else
97dc48e2 662 seq_puts(seq, "FLOW_RND ");
007a531b
JHS		 663 }
664
a553e4a6 665#ifdef CONFIG_XFRM
8101328b 666 if (pkt_dev->flags & F_IPSEC_ON) {
97dc48e2 667 seq_puts(seq, "IPSEC ");
8101328b
FD		 668 if (pkt_dev->spi)
669 seq_printf(seq, "spi:%u", pkt_dev->spi);
670 }
a553e4a6
JHS		 671#endif
672
222f1806 673 if (pkt_dev->flags & F_MACSRC_RND)
97dc48e2 674 seq_puts(seq, "MACSRC_RND ");
1da177e4 675
222f1806 676 if (pkt_dev->flags & F_MACDST_RND)
97dc48e2 677 seq_puts(seq, "MACDST_RND ");
1da177e4 678
34954ddc 679 if (pkt_dev->flags & F_VID_RND)
97dc48e2 680 seq_puts(seq, "VID_RND ");
34954ddc
FF		 681
682 if (pkt_dev->flags & F_SVID_RND)
97dc48e2 683 seq_puts(seq, "SVID_RND ");
34954ddc 684
e99b99b4 685 if (pkt_dev->flags & F_NODE)
97dc48e2 686 seq_puts(seq, "NODE_ALLOC ");
e99b99b4 687
222f1806
LC		 688 seq_puts(seq, "\n");
689
fd29cf72 690 /* not really stopped, more like last-running-at */
398f382c 691 stopped = pkt_dev->running ? ktime_get() : pkt_dev->stopped_at;
fd29cf72
SH		 692 idle = pkt_dev->idle_acc;
693 do_div(idle, NSEC_PER_USEC);
1da177e4 694
222f1806 695 seq_printf(seq,
fd29cf72 696 "Current:\n pkts-sofar: %llu errors: %llu\n",
222f1806 697 (unsigned long long)pkt_dev->sofar,
fd29cf72
SH		 698 (unsigned long long)pkt_dev->errors);
699
700 seq_printf(seq,
701 " started: %lluus stopped: %lluus idle: %lluus\n",
702 (unsigned long long) ktime_to_us(pkt_dev->started_at),
703 (unsigned long long) ktime_to_us(stopped),
704 (unsigned long long) idle);
1da177e4 705
222f1806
LC		 706 seq_printf(seq,
707 " seq_num: %d cur_dst_mac_offset: %d cur_src_mac_offset: %d\n",
d50a6b56
SH		 708 pkt_dev->seq_num, pkt_dev->cur_dst_mac_offset,
709 pkt_dev->cur_src_mac_offset);
1da177e4 710
222f1806 711 if (pkt_dev->flags & F_IPV6) {
47a0200d
AD		 712 seq_printf(seq, " cur_saddr: %pI6c cur_daddr: %pI6c\n",
713 &pkt_dev->cur_in6_saddr,
714 &pkt_dev->cur_in6_daddr);
222f1806 715 } else
0373a946
AW		 716 seq_printf(seq, " cur_saddr: %pI4 cur_daddr: %pI4\n",
717 &pkt_dev->cur_saddr, &pkt_dev->cur_daddr);
1da177e4 718
222f1806 719 seq_printf(seq, " cur_udp_dst: %d cur_udp_src: %d\n",
d50a6b56 720 pkt_dev->cur_udp_dst, pkt_dev->cur_udp_src);
1da177e4 721
45b270f8
RO		 722 seq_printf(seq, " cur_queue_map: %u\n", pkt_dev->cur_queue_map);
723
222f1806 724 seq_printf(seq, " flows: %u\n", pkt_dev->nflows);
1da177e4
LT		 725
726 if (pkt_dev->result[0])
222f1806 727 seq_printf(seq, "Result: %s\n", pkt_dev->result);
1da177e4 728 else
97dc48e2 729 seq_puts(seq, "Result: Idle\n");
1da177e4 730
d50a6b56 731 return 0;
1da177e4
LT		 732}
733
ca6549af 734
63adc6fb
SH		 735static int hex32_arg(const char __user *user_buffer, unsigned long maxlen,
736 __u32 *num)
ca6549af
SW		 737{
738 int i = 0;
739 *num = 0;
740
e71a4783 741 for (; i < maxlen; i++) {
82fd5b5d 742 int value;
ca6549af
SW		 743 char c;
744 *num <<= 4;
745 if (get_user(c, &user_buffer[i]))
746 return -EFAULT;
82fd5b5d
AS		 747 value = hex_to_bin(c);
748 if (value >= 0)
749 *num |= value;
ca6549af
SW		 750 else
751 break;
752 }
753 return i;
754}
755
222f1806
LC		 756static int count_trail_chars(const char __user * user_buffer,
757 unsigned int maxlen)
1da177e4
LT		 758{
759 int i;
760
761 for (i = 0; i < maxlen; i++) {
222f1806
LC		 762 char c;
763 if (get_user(c, &user_buffer[i]))
764 return -EFAULT;
765 switch (c) {
1da177e4
LT		 766 case '\"':
767 case '\n':
768 case '\r':
769 case '\t':
770 case ' ':
771 case '=':
772 break;
773 default:
774 goto done;
3ff50b79 775 }
1da177e4
LT		 776 }
777done:
778 return i;
779}
780
bf0813bd
PG		 781static long num_arg(const char __user *user_buffer, unsigned long maxlen,
782 unsigned long *num)
1da177e4 783{
d6182223 784 int i;
1da177e4 785 *num = 0;
222f1806 786
d6182223 787 for (i = 0; i < maxlen; i++) {
222f1806
LC		 788 char c;
789 if (get_user(c, &user_buffer[i]))
790 return -EFAULT;
791 if ((c >= '0') && (c <= '9')) {
1da177e4 792 *num *= 10;
222f1806 793 *num += c - '0';
1da177e4
LT		 794 } else
795 break;
796 }
797 return i;
798}
799
222f1806 800static int strn_len(const char __user * user_buffer, unsigned int maxlen)
1da177e4 801{
d6182223 802 int i;
1da177e4 803
d6182223 804 for (i = 0; i < maxlen; i++) {
222f1806
LC		 805 char c;
806 if (get_user(c, &user_buffer[i]))
807 return -EFAULT;
808 switch (c) {
1da177e4
LT		 809 case '\"':
810 case '\n':
811 case '\r':
812 case '\t':
813 case ' ':
814 goto done_str;
1da177e4
LT		 815 default:
816 break;
3ff50b79 817 }
1da177e4
LT		 818 }
819done_str:
1da177e4
LT		 820 return i;
821}
822
ca6549af
SW		 823static ssize_t get_labels(const char __user *buffer, struct pktgen_dev *pkt_dev)
824{
95c96174 825 unsigned int n = 0;
ca6549af
SW		 826 char c;
827 ssize_t i = 0;
828 int len;
829
830 pkt_dev->nr_labels = 0;
831 do {
832 __u32 tmp;
1ca7768c 833 len = hex32_arg(&buffer[i], 8, &tmp);
ca6549af
SW		 834 if (len <= 0)
835 return len;
836 pkt_dev->labels[n] = htonl(tmp);
837 if (pkt_dev->labels[n] & MPLS_STACK_BOTTOM)
838 pkt_dev->flags |= F_MPLS_RND;
839 i += len;
840 if (get_user(c, &buffer[i]))
841 return -EFAULT;
842 i++;
843 n++;
844 if (n >= MAX_MPLS_LABELS)
845 return -E2BIG;
e71a4783 846 } while (c == ',');
ca6549af
SW		 847
848 pkt_dev->nr_labels = n;
849 return i;
850}
851
222f1806
LC		 852static ssize_t pktgen_if_write(struct file *file,
853 const char __user * user_buffer, size_t count,
854 loff_t * offset)
1da177e4 855{
8a994a71 856 struct seq_file *seq = file->private_data;
222f1806 857 struct pktgen_dev *pkt_dev = seq->private;
d6182223 858 int i, max, len;
1da177e4
LT		 859 char name[16], valstr[32];
860 unsigned long value = 0;
222f1806
LC		 861 char *pg_result = NULL;
862 int tmp = 0;
1da177e4 863 char buf[128];
222f1806
LC		 864
865 pg_result = &(pkt_dev->result[0]);
866
1da177e4 867 if (count < 1) {
294a0b7f 868 pr_warn("wrong command format\n");
1da177e4
LT		 869 return -EINVAL;
870 }
222f1806 871
d6182223
PG		 872 max = count;
873 tmp = count_trail_chars(user_buffer, max);
222f1806 874 if (tmp < 0) {
294a0b7f 875 pr_warn("illegal format\n");
222f1806 876 return tmp;
1da177e4 877 }
d6182223 878 i = tmp;
222f1806 879
1da177e4
LT		 880 /* Read variable name */
881
882 len = strn_len(&user_buffer[i], sizeof(name) - 1);
63adc6fb 883 if (len < 0)
222f1806 884 return len;
63adc6fb 885
1da177e4 886 memset(name, 0, sizeof(name));
222f1806 887 if (copy_from_user(name, &user_buffer[i], len))
1da177e4
LT		 888 return -EFAULT;
889 i += len;
222f1806
LC		 890
891 max = count - i;
1da177e4 892 len = count_trail_chars(&user_buffer[i], max);
222f1806
LC		 893 if (len < 0)
894 return len;
895
1da177e4
LT		 896 i += len;
897
898 if (debug) {
86c2c0a8 899 size_t copy = min_t(size_t, count, 1023);
448d7b5d
NE		 900 char tb[copy + 1];
901 if (copy_from_user(tb, user_buffer, copy))
1da177e4 902 return -EFAULT;
448d7b5d 903 tb[copy] = 0;
f342cda7
JP		 904 pr_debug("%s,%lu buffer -:%s:-\n",
905 name, (unsigned long)count, tb);
222f1806 906 }
1da177e4
LT		 907
908 if (!strcmp(name, "min_pkt_size")) {
909 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 910 if (len < 0)
222f1806 911 return len;
63adc6fb 912
1da177e4 913 i += len;
222f1806
LC		 914 if (value < 14 + 20 + 8)
915 value = 14 + 20 + 8;
916 if (value != pkt_dev->min_pkt_size) {
917 pkt_dev->min_pkt_size = value;
918 pkt_dev->cur_pkt_size = value;
919 }
920 sprintf(pg_result, "OK: min_pkt_size=%u",
921 pkt_dev->min_pkt_size);
1da177e4
LT		 922 return count;
923 }
924
222f1806 925 if (!strcmp(name, "max_pkt_size")) {
1da177e4 926 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 927 if (len < 0)
222f1806 928 return len;
63adc6fb 929
1da177e4 930 i += len;
222f1806
LC		 931 if (value < 14 + 20 + 8)
932 value = 14 + 20 + 8;
933 if (value != pkt_dev->max_pkt_size) {
934 pkt_dev->max_pkt_size = value;
935 pkt_dev->cur_pkt_size = value;
936 }
937 sprintf(pg_result, "OK: max_pkt_size=%u",
938 pkt_dev->max_pkt_size);
1da177e4
LT		 939 return count;
940 }
941
222f1806 942 /* Shortcut for min = max */
1da177e4
LT		 943
944 if (!strcmp(name, "pkt_size")) {
945 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 946 if (len < 0)
222f1806 947 return len;
63adc6fb 948
1da177e4 949 i += len;
222f1806
LC		 950 if (value < 14 + 20 + 8)
951 value = 14 + 20 + 8;
952 if (value != pkt_dev->min_pkt_size) {
953 pkt_dev->min_pkt_size = value;
954 pkt_dev->max_pkt_size = value;
955 pkt_dev->cur_pkt_size = value;
956 }
1da177e4
LT		 957 sprintf(pg_result, "OK: pkt_size=%u", pkt_dev->min_pkt_size);
958 return count;
959 }
960
222f1806 961 if (!strcmp(name, "debug")) {
1da177e4 962 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 963 if (len < 0)
222f1806 964 return len;
63adc6fb 965
1da177e4 966 i += len;
222f1806 967 debug = value;
1da177e4
LT		 968 sprintf(pg_result, "OK: debug=%u", debug);
969 return count;
970 }
971
222f1806 972 if (!strcmp(name, "frags")) {
1da177e4 973 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 974 if (len < 0)
222f1806 975 return len;
63adc6fb 976
1da177e4
LT		 977 i += len;
978 pkt_dev->nfrags = value;
979 sprintf(pg_result, "OK: frags=%u", pkt_dev->nfrags);
980 return count;
981 }
982 if (!strcmp(name, "delay")) {
983 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 984 if (len < 0)
222f1806 985 return len;
63adc6fb 986
1da177e4 987 i += len;
fd29cf72
SH		 988 if (value == 0x7FFFFFFF)
989 pkt_dev->delay = ULLONG_MAX;
990 else
9240d715 991 pkt_dev->delay = (u64)value;
fd29cf72
SH		 992
993 sprintf(pg_result, "OK: delay=%llu",
994 (unsigned long long) pkt_dev->delay);
1da177e4
LT		 995 return count;
996 }
43d28b65
DT		 997 if (!strcmp(name, "rate")) {
998 len = num_arg(&user_buffer[i], 10, &value);
999 if (len < 0)
1000 return len;
1001
1002 i += len;
1003 if (!value)
1004 return len;
1005 pkt_dev->delay = pkt_dev->min_pkt_size*8*NSEC_PER_USEC/value;
1006 if (debug)
f9467eae 1007 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1008
1009 sprintf(pg_result, "OK: rate=%lu", value);
1010 return count;
1011 }
1012 if (!strcmp(name, "ratep")) {
1013 len = num_arg(&user_buffer[i], 10, &value);
1014 if (len < 0)
1015 return len;
1016
1017 i += len;
1018 if (!value)
1019 return len;
1020 pkt_dev->delay = NSEC_PER_SEC/value;
1021 if (debug)
f9467eae 1022 pr_info("Delay set at: %llu ns\n", pkt_dev->delay);
43d28b65
DT		 1023
1024 sprintf(pg_result, "OK: rate=%lu", value);
1025 return count;
1026 }
222f1806 1027 if (!strcmp(name, "udp_src_min")) {
1da177e4 1028 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1029 if (len < 0)
222f1806 1030 return len;
63adc6fb 1031
1da177e4 1032 i += len;
222f1806
LC		 1033 if (value != pkt_dev->udp_src_min) {
1034 pkt_dev->udp_src_min = value;
1035 pkt_dev->cur_udp_src = value;
1036 }
1da177e4
LT		 1037 sprintf(pg_result, "OK: udp_src_min=%u", pkt_dev->udp_src_min);
1038 return count;
1039 }
222f1806 1040 if (!strcmp(name, "udp_dst_min")) {
1da177e4 1041 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1042 if (len < 0)
222f1806 1043 return len;
63adc6fb 1044
1da177e4 1045 i += len;
222f1806
LC		 1046 if (value != pkt_dev->udp_dst_min) {
1047 pkt_dev->udp_dst_min = value;
1048 pkt_dev->cur_udp_dst = value;
1049 }
1da177e4
LT		 1050 sprintf(pg_result, "OK: udp_dst_min=%u", pkt_dev->udp_dst_min);
1051 return count;
1052 }
222f1806 1053 if (!strcmp(name, "udp_src_max")) {
1da177e4 1054 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1055 if (len < 0)
222f1806 1056 return len;
63adc6fb 1057
1da177e4 1058 i += len;
222f1806
LC		 1059 if (value != pkt_dev->udp_src_max) {
1060 pkt_dev->udp_src_max = value;
1061 pkt_dev->cur_udp_src = value;
1062 }
1da177e4
LT		 1063 sprintf(pg_result, "OK: udp_src_max=%u", pkt_dev->udp_src_max);
1064 return count;
1065 }
222f1806 1066 if (!strcmp(name, "udp_dst_max")) {
1da177e4 1067 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1068 if (len < 0)
222f1806 1069 return len;
63adc6fb 1070
1da177e4 1071 i += len;
222f1806
LC		 1072 if (value != pkt_dev->udp_dst_max) {
1073 pkt_dev->udp_dst_max = value;
1074 pkt_dev->cur_udp_dst = value;
1075 }
1da177e4
LT		 1076 sprintf(pg_result, "OK: udp_dst_max=%u", pkt_dev->udp_dst_max);
1077 return count;
1078 }
1079 if (!strcmp(name, "clone_skb")) {
1080 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1081 if (len < 0)
222f1806 1082 return len;
d8873315
NH		 1083 if ((value > 0) &&
1084 (!(pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)))
1085 return -ENOTSUPP;
1da177e4 1086 i += len;
222f1806
LC		 1087 pkt_dev->clone_skb = value;
1088
1da177e4
LT		 1089 sprintf(pg_result, "OK: clone_skb=%d", pkt_dev->clone_skb);
1090 return count;
1091 }
1092 if (!strcmp(name, "count")) {
1093 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1094 if (len < 0)
222f1806 1095 return len;
63adc6fb 1096
1da177e4
LT		 1097 i += len;
1098 pkt_dev->count = value;
1099 sprintf(pg_result, "OK: count=%llu",
222f1806 1100 (unsigned long long)pkt_dev->count);
1da177e4
LT		 1101 return count;
1102 }
1103 if (!strcmp(name, "src_mac_count")) {
1104 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1105 if (len < 0)
222f1806 1106 return len;
63adc6fb 1107
1da177e4
LT		 1108 i += len;
1109 if (pkt_dev->src_mac_count != value) {
222f1806
LC		 1110 pkt_dev->src_mac_count = value;
1111 pkt_dev->cur_src_mac_offset = 0;
1112 }
1113 sprintf(pg_result, "OK: src_mac_count=%d",
1114 pkt_dev->src_mac_count);
1da177e4
LT		 1115 return count;
1116 }
1117 if (!strcmp(name, "dst_mac_count")) {
1118 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1119 if (len < 0)
222f1806 1120 return len;
63adc6fb 1121
1da177e4
LT		 1122 i += len;
1123 if (pkt_dev->dst_mac_count != value) {
222f1806
LC		 1124 pkt_dev->dst_mac_count = value;
1125 pkt_dev->cur_dst_mac_offset = 0;
1126 }
1127 sprintf(pg_result, "OK: dst_mac_count=%d",
1128 pkt_dev->dst_mac_count);
1da177e4
LT		 1129 return count;
1130 }
38b2cf29
AS		 1131 if (!strcmp(name, "burst")) {
1132 len = num_arg(&user_buffer[i], 10, &value);
1133 if (len < 0)
1134 return len;
1135
1136 i += len;
1137 pkt_dev->burst = value < 1 ? 1 : value;
1138 sprintf(pg_result, "OK: burst=%d", pkt_dev->burst);
1139 return count;
1140 }
e99b99b4
RO		 1141 if (!strcmp(name, "node")) {
1142 len = num_arg(&user_buffer[i], 10, &value);
1143 if (len < 0)
1144 return len;
1145
1146 i += len;
1147
1148 if (node_possible(value)) {
1149 pkt_dev->node = value;
1150 sprintf(pg_result, "OK: node=%d", pkt_dev->node);
26ad7879
ED		 1151 if (pkt_dev->page) {
1152 put_page(pkt_dev->page);
1153 pkt_dev->page = NULL;
1154 }
e99b99b4
RO		 1155 }
1156 else
1157 sprintf(pg_result, "ERROR: node not possible");
1158 return count;
1159 }
1da177e4 1160 if (!strcmp(name, "flag")) {
222f1806
LC		 1161 char f[32];
1162 memset(f, 0, 32);
1da177e4 1163 len = strn_len(&user_buffer[i], sizeof(f) - 1);
63adc6fb 1164 if (len < 0)
222f1806 1165 return len;
63adc6fb 1166
1da177e4
LT		 1167 if (copy_from_user(f, &user_buffer[i], len))
1168 return -EFAULT;
1169 i += len;
222f1806
LC		 1170 if (strcmp(f, "IPSRC_RND") == 0)
1171 pkt_dev->flags |= F_IPSRC_RND;
1172
1173 else if (strcmp(f, "!IPSRC_RND") == 0)
1174 pkt_dev->flags &= ~F_IPSRC_RND;
1175
1176 else if (strcmp(f, "TXSIZE_RND") == 0)
1177 pkt_dev->flags |= F_TXSIZE_RND;
1178
1179 else if (strcmp(f, "!TXSIZE_RND") == 0)
1180 pkt_dev->flags &= ~F_TXSIZE_RND;
1181
1182 else if (strcmp(f, "IPDST_RND") == 0)
1183 pkt_dev->flags |= F_IPDST_RND;
1184
1185 else if (strcmp(f, "!IPDST_RND") == 0)
1186 pkt_dev->flags &= ~F_IPDST_RND;
1187
1188 else if (strcmp(f, "UDPSRC_RND") == 0)
1189 pkt_dev->flags |= F_UDPSRC_RND;
1190
1191 else if (strcmp(f, "!UDPSRC_RND") == 0)
1192 pkt_dev->flags &= ~F_UDPSRC_RND;
1193
1194 else if (strcmp(f, "UDPDST_RND") == 0)
1195 pkt_dev->flags |= F_UDPDST_RND;
1196
1197 else if (strcmp(f, "!UDPDST_RND") == 0)
1198 pkt_dev->flags &= ~F_UDPDST_RND;
1199
1200 else if (strcmp(f, "MACSRC_RND") == 0)
1201 pkt_dev->flags |= F_MACSRC_RND;
1202
1203 else if (strcmp(f, "!MACSRC_RND") == 0)
1204 pkt_dev->flags &= ~F_MACSRC_RND;
1205
1206 else if (strcmp(f, "MACDST_RND") == 0)
1207 pkt_dev->flags |= F_MACDST_RND;
1208
1209 else if (strcmp(f, "!MACDST_RND") == 0)
1210 pkt_dev->flags &= ~F_MACDST_RND;
1211
ca6549af
SW		 1212 else if (strcmp(f, "MPLS_RND") == 0)
1213 pkt_dev->flags |= F_MPLS_RND;
1214
1215 else if (strcmp(f, "!MPLS_RND") == 0)
1216 pkt_dev->flags &= ~F_MPLS_RND;
1217
34954ddc
FF		 1218 else if (strcmp(f, "VID_RND") == 0)
1219 pkt_dev->flags |= F_VID_RND;
1220
1221 else if (strcmp(f, "!VID_RND") == 0)
1222 pkt_dev->flags &= ~F_VID_RND;
1223
1224 else if (strcmp(f, "SVID_RND") == 0)
1225 pkt_dev->flags |= F_SVID_RND;
1226
1227 else if (strcmp(f, "!SVID_RND") == 0)
1228 pkt_dev->flags &= ~F_SVID_RND;
1229
007a531b
JHS		 1230 else if (strcmp(f, "FLOW_SEQ") == 0)
1231 pkt_dev->flags |= F_FLOW_SEQ;
1232
45b270f8
RO		 1233 else if (strcmp(f, "QUEUE_MAP_RND") == 0)
1234 pkt_dev->flags |= F_QUEUE_MAP_RND;
1235
1236 else if (strcmp(f, "!QUEUE_MAP_RND") == 0)
1237 pkt_dev->flags &= ~F_QUEUE_MAP_RND;
e6fce5b9
RO		 1238
1239 else if (strcmp(f, "QUEUE_MAP_CPU") == 0)
1240 pkt_dev->flags |= F_QUEUE_MAP_CPU;
1241
1242 else if (strcmp(f, "!QUEUE_MAP_CPU") == 0)
1243 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
a553e4a6
JHS		 1244#ifdef CONFIG_XFRM
1245 else if (strcmp(f, "IPSEC") == 0)
1246 pkt_dev->flags |= F_IPSEC_ON;
1247#endif
1248
1ca7768c
FF		 1249 else if (strcmp(f, "!IPV6") == 0)
1250 pkt_dev->flags &= ~F_IPV6;
1251
e99b99b4
RO		 1252 else if (strcmp(f, "NODE_ALLOC") == 0)
1253 pkt_dev->flags |= F_NODE;
1254
1255 else if (strcmp(f, "!NODE_ALLOC") == 0)
1256 pkt_dev->flags &= ~F_NODE;
1257
c26bf4a5
TG		 1258 else if (strcmp(f, "UDPCSUM") == 0)
1259 pkt_dev->flags |= F_UDPCSUM;
1260
1261 else if (strcmp(f, "!UDPCSUM") == 0)
1262 pkt_dev->flags &= ~F_UDPCSUM;
1263
afb84b62
JDB		 1264 else if (strcmp(f, "NO_TIMESTAMP") == 0)
1265 pkt_dev->flags |= F_NO_TIMESTAMP;
1266
222f1806
LC		 1267 else {
1268 sprintf(pg_result,
1269 "Flag -:%s:- unknown\nAvailable flags, (prepend ! to un-set flag):\n%s",
1270 f,
1ca7768c 1271 "IPSRC_RND, IPDST_RND, UDPSRC_RND, UDPDST_RND, "
72f8e06f
MK		 1272 "MACSRC_RND, MACDST_RND, TXSIZE_RND, IPV6, "
1273 "MPLS_RND, VID_RND, SVID_RND, FLOW_SEQ, "
1274 "QUEUE_MAP_RND, QUEUE_MAP_CPU, UDPCSUM, "
afb84b62 1275 "NO_TIMESTAMP, "
72f8e06f
MK		 1276#ifdef CONFIG_XFRM
1277 "IPSEC, "
1278#endif
1279 "NODE_ALLOC\n");
222f1806
LC		 1280 return count;
1281 }
1da177e4
LT		 1282 sprintf(pg_result, "OK: flags=0x%x", pkt_dev->flags);
1283 return count;
1284 }
1285 if (!strcmp(name, "dst_min") || !strcmp(name, "dst")) {
1286 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_min) - 1);
63adc6fb 1287 if (len < 0)
222f1806 1288 return len;
1da177e4 1289
222f1806 1290 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1291 return -EFAULT;
222f1806
LC		 1292 buf[len] = 0;
1293 if (strcmp(buf, pkt_dev->dst_min) != 0) {
1294 memset(pkt_dev->dst_min, 0, sizeof(pkt_dev->dst_min));
1295 strncpy(pkt_dev->dst_min, buf, len);
1296 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
1297 pkt_dev->cur_daddr = pkt_dev->daddr_min;
1298 }
1299 if (debug)
f342cda7 1300 pr_debug("dst_min set to: %s\n", pkt_dev->dst_min);
222f1806 1301 i += len;
1da177e4
LT		 1302 sprintf(pg_result, "OK: dst_min=%s", pkt_dev->dst_min);
1303 return count;
1304 }
1305 if (!strcmp(name, "dst_max")) {
1306 len = strn_len(&user_buffer[i], sizeof(pkt_dev->dst_max) - 1);
63adc6fb 1307 if (len < 0)
222f1806 1308 return len;
63adc6fb 1309
1da177e4 1310
222f1806 1311 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4
LT		 1312 return -EFAULT;
1313
222f1806
LC		 1314 buf[len] = 0;
1315 if (strcmp(buf, pkt_dev->dst_max) != 0) {
1316 memset(pkt_dev->dst_max, 0, sizeof(pkt_dev->dst_max));
1317 strncpy(pkt_dev->dst_max, buf, len);
1318 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
1319 pkt_dev->cur_daddr = pkt_dev->daddr_max;
1320 }
1321 if (debug)
f342cda7 1322 pr_debug("dst_max set to: %s\n", pkt_dev->dst_max);
1da177e4
LT		 1323 i += len;
1324 sprintf(pg_result, "OK: dst_max=%s", pkt_dev->dst_max);
1325 return count;
1326 }
1327 if (!strcmp(name, "dst6")) {
1328 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1329 if (len < 0)
1330 return len;
1da177e4
LT		 1331
1332 pkt_dev->flags |= F_IPV6;
1333
222f1806 1334 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1335 return -EFAULT;
222f1806 1336 buf[len] = 0;
1da177e4 1337
c468fb13 1338 in6_pton(buf, -1, pkt_dev->in6_daddr.s6_addr, -1, NULL);
47a0200d 1339 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_daddr);
1da177e4 1340
4e3fd7a0 1341 pkt_dev->cur_in6_daddr = pkt_dev->in6_daddr;
1da177e4 1342
222f1806 1343 if (debug)
f342cda7 1344 pr_debug("dst6 set to: %s\n", buf);
1da177e4 1345
222f1806 1346 i += len;
1da177e4
LT		 1347 sprintf(pg_result, "OK: dst6=%s", buf);
1348 return count;
1349 }
1350 if (!strcmp(name, "dst6_min")) {
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->min_in6_daddr.s6_addr, -1, NULL);
47a0200d 1362 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->min_in6_daddr);
1da177e4 1363
4e3fd7a0 1364 pkt_dev->cur_in6_daddr = pkt_dev->min_in6_daddr;
222f1806 1365 if (debug)
f342cda7 1366 pr_debug("dst6_min set to: %s\n", buf);
1da177e4 1367
222f1806 1368 i += len;
1da177e4
LT		 1369 sprintf(pg_result, "OK: dst6_min=%s", buf);
1370 return count;
1371 }
1372 if (!strcmp(name, "dst6_max")) {
1373 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1374 if (len < 0)
1375 return len;
1da177e4
LT		 1376
1377 pkt_dev->flags |= F_IPV6;
1378
222f1806 1379 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1380 return -EFAULT;
222f1806 1381 buf[len] = 0;
1da177e4 1382
c468fb13 1383 in6_pton(buf, -1, pkt_dev->max_in6_daddr.s6_addr, -1, NULL);
47a0200d 1384 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->max_in6_daddr);
1da177e4 1385
222f1806 1386 if (debug)
f342cda7 1387 pr_debug("dst6_max set to: %s\n", buf);
1da177e4 1388
222f1806 1389 i += len;
1da177e4
LT		 1390 sprintf(pg_result, "OK: dst6_max=%s", buf);
1391 return count;
1392 }
1393 if (!strcmp(name, "src6")) {
1394 len = strn_len(&user_buffer[i], sizeof(buf) - 1);
222f1806
LC		 1395 if (len < 0)
1396 return len;
1da177e4
LT		 1397
1398 pkt_dev->flags |= F_IPV6;
1399
222f1806 1400 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1401 return -EFAULT;
222f1806 1402 buf[len] = 0;
1da177e4 1403
c468fb13 1404 in6_pton(buf, -1, pkt_dev->in6_saddr.s6_addr, -1, NULL);
47a0200d 1405 snprintf(buf, sizeof(buf), "%pI6c", &pkt_dev->in6_saddr);
1da177e4 1406
4e3fd7a0 1407 pkt_dev->cur_in6_saddr = pkt_dev->in6_saddr;
1da177e4 1408
222f1806 1409 if (debug)
f342cda7 1410 pr_debug("src6 set to: %s\n", buf);
222f1806
LC		 1411
1412 i += len;
1da177e4
LT		 1413 sprintf(pg_result, "OK: src6=%s", buf);
1414 return count;
1415 }
1416 if (!strcmp(name, "src_min")) {
1417 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_min) - 1);
63adc6fb 1418 if (len < 0)
222f1806 1419 return len;
63adc6fb 1420
222f1806 1421 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1422 return -EFAULT;
222f1806
LC		 1423 buf[len] = 0;
1424 if (strcmp(buf, pkt_dev->src_min) != 0) {
1425 memset(pkt_dev->src_min, 0, sizeof(pkt_dev->src_min));
1426 strncpy(pkt_dev->src_min, buf, len);
1427 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
1428 pkt_dev->cur_saddr = pkt_dev->saddr_min;
1429 }
1430 if (debug)
f342cda7 1431 pr_debug("src_min set to: %s\n", pkt_dev->src_min);
1da177e4
LT		 1432 i += len;
1433 sprintf(pg_result, "OK: src_min=%s", pkt_dev->src_min);
1434 return count;
1435 }
1436 if (!strcmp(name, "src_max")) {
1437 len = strn_len(&user_buffer[i], sizeof(pkt_dev->src_max) - 1);
63adc6fb 1438 if (len < 0)
222f1806 1439 return len;
63adc6fb 1440
222f1806 1441 if (copy_from_user(buf, &user_buffer[i], len))
1da177e4 1442 return -EFAULT;
222f1806
LC		 1443 buf[len] = 0;
1444 if (strcmp(buf, pkt_dev->src_max) != 0) {
1445 memset(pkt_dev->src_max, 0, sizeof(pkt_dev->src_max));
1446 strncpy(pkt_dev->src_max, buf, len);
1447 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
1448 pkt_dev->cur_saddr = pkt_dev->saddr_max;
1449 }
1450 if (debug)
f342cda7 1451 pr_debug("src_max set to: %s\n", pkt_dev->src_max);
1da177e4
LT		 1452 i += len;
1453 sprintf(pg_result, "OK: src_max=%s", pkt_dev->src_max);
1454 return count;
1455 }
1456 if (!strcmp(name, "dst_mac")) {
1da177e4 1457 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1458 if (len < 0)
222f1806 1459 return len;
63adc6fb 1460
1da177e4 1461 memset(valstr, 0, sizeof(valstr));
222f1806 1462 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1463 return -EFAULT;
1da177e4 1464
4940fc88
AD		 1465 if (!mac_pton(valstr, pkt_dev->dst_mac))
1466 return -EINVAL;
1da177e4 1467 /* Set up Dest MAC */
9ea08b12 1468 ether_addr_copy(&pkt_dev->hh[0], pkt_dev->dst_mac);
222f1806 1469
4940fc88 1470 sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
1da177e4
LT		 1471 return count;
1472 }
1473 if (!strcmp(name, "src_mac")) {
1da177e4 1474 len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
63adc6fb 1475 if (len < 0)
222f1806 1476 return len;
63adc6fb 1477
1da177e4 1478 memset(valstr, 0, sizeof(valstr));
222f1806 1479 if (copy_from_user(valstr, &user_buffer[i], len))
1da177e4 1480 return -EFAULT;
1da177e4 1481
4940fc88
AD		 1482 if (!mac_pton(valstr, pkt_dev->src_mac))
1483 return -EINVAL;
ce5d0b47 1484 /* Set up Src MAC */
9ea08b12 1485 ether_addr_copy(&pkt_dev->hh[6], pkt_dev->src_mac);
ce5d0b47 1486
4940fc88 1487 sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
1da177e4
LT		 1488 return count;
1489 }
1490
222f1806
LC		 1491 if (!strcmp(name, "clear_counters")) {
1492 pktgen_clear_counters(pkt_dev);
1493 sprintf(pg_result, "OK: Clearing counters.\n");
1494 return count;
1495 }
1da177e4
LT		 1496
1497 if (!strcmp(name, "flows")) {
1498 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1499 if (len < 0)
222f1806 1500 return len;
63adc6fb 1501
1da177e4
LT		 1502 i += len;
1503 if (value > MAX_CFLOWS)
1504 value = MAX_CFLOWS;
1505
1506 pkt_dev->cflows = value;
1507 sprintf(pg_result, "OK: flows=%u", pkt_dev->cflows);
1508 return count;
1509 }
6bae9190 1510#ifdef CONFIG_XFRM
de4aee7d
FD		 1511 if (!strcmp(name, "spi")) {
1512 len = num_arg(&user_buffer[i], 10, &value);
1513 if (len < 0)
1514 return len;
1515
1516 i += len;
1517 pkt_dev->spi = value;
1518 sprintf(pg_result, "OK: spi=%u", pkt_dev->spi);
1519 return count;
1520 }
6bae9190 1521#endif
1da177e4
LT		 1522 if (!strcmp(name, "flowlen")) {
1523 len = num_arg(&user_buffer[i], 10, &value);
63adc6fb 1524 if (len < 0)
222f1806 1525 return len;
63adc6fb 1526
1da177e4
LT		 1527 i += len;
1528 pkt_dev->lflow = value;
1529 sprintf(pg_result, "OK: flowlen=%u", pkt_dev->lflow);
1530 return count;
1531 }
222f1806 1532
45b270f8
RO		 1533 if (!strcmp(name, "queue_map_min")) {
1534 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1535 if (len < 0)
45b270f8 1536 return len;
63adc6fb 1537
45b270f8
RO		 1538 i += len;
1539 pkt_dev->queue_map_min = value;
1540 sprintf(pg_result, "OK: queue_map_min=%u", pkt_dev->queue_map_min);
1541 return count;
1542 }
1543
1544 if (!strcmp(name, "queue_map_max")) {
1545 len = num_arg(&user_buffer[i], 5, &value);
63adc6fb 1546 if (len < 0)
45b270f8 1547 return len;
63adc6fb 1548
45b270f8
RO		 1549 i += len;
1550 pkt_dev->queue_map_max = value;
1551 sprintf(pg_result, "OK: queue_map_max=%u", pkt_dev->queue_map_max);
1552 return count;
1553 }
1554
ca6549af 1555 if (!strcmp(name, "mpls")) {
95c96174 1556 unsigned int n, cnt;
cfcabdcc 1557
ca6549af 1558 len = get_labels(&user_buffer[i], pkt_dev);
cfcabdcc
SH		 1559 if (len < 0)
1560 return len;
ca6549af 1561 i += len;
cfcabdcc 1562 cnt = sprintf(pg_result, "OK: mpls=");
e71a4783 1563 for (n = 0; n < pkt_dev->nr_labels; n++)
cfcabdcc
SH		 1564 cnt += sprintf(pg_result + cnt,
1565 "%08x%s", ntohl(pkt_dev->labels[n]),
1566 n == pkt_dev->nr_labels-1 ? "" : ",");
34954ddc
FF		 1567
1568 if (pkt_dev->nr_labels && pkt_dev->vlan_id != 0xffff) {
1569 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1570 pkt_dev->svlan_id = 0xffff;
1571
1572 if (debug)
f342cda7 1573 pr_debug("VLAN/SVLAN auto turned off\n");
34954ddc
FF		 1574 }
1575 return count;
1576 }
1577
1578 if (!strcmp(name, "vlan_id")) {
1579 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1580 if (len < 0)
34954ddc 1581 return len;
63adc6fb 1582
34954ddc
FF		 1583 i += len;
1584 if (value <= 4095) {
1585 pkt_dev->vlan_id = value; /* turn on VLAN */
1586
1587 if (debug)
f342cda7 1588 pr_debug("VLAN turned on\n");
34954ddc
FF		 1589
1590 if (debug && pkt_dev->nr_labels)
f342cda7 1591 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1592
1593 pkt_dev->nr_labels = 0; /* turn off MPLS */
1594 sprintf(pg_result, "OK: vlan_id=%u", pkt_dev->vlan_id);
1595 } else {
1596 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1597 pkt_dev->svlan_id = 0xffff;
1598
1599 if (debug)
f342cda7 1600 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1601 }
1602 return count;
1603 }
1604
1605 if (!strcmp(name, "vlan_p")) {
1606 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1607 if (len < 0)
34954ddc 1608 return len;
63adc6fb 1609
34954ddc
FF		 1610 i += len;
1611 if ((value <= 7) && (pkt_dev->vlan_id != 0xffff)) {
1612 pkt_dev->vlan_p = value;
1613 sprintf(pg_result, "OK: vlan_p=%u", pkt_dev->vlan_p);
1614 } else {
1615 sprintf(pg_result, "ERROR: vlan_p must be 0-7");
1616 }
1617 return count;
1618 }
1619
1620 if (!strcmp(name, "vlan_cfi")) {
1621 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1622 if (len < 0)
34954ddc 1623 return len;
63adc6fb 1624
34954ddc
FF		 1625 i += len;
1626 if ((value <= 1) && (pkt_dev->vlan_id != 0xffff)) {
1627 pkt_dev->vlan_cfi = value;
1628 sprintf(pg_result, "OK: vlan_cfi=%u", pkt_dev->vlan_cfi);
1629 } else {
1630 sprintf(pg_result, "ERROR: vlan_cfi must be 0-1");
1631 }
1632 return count;
1633 }
1634
1635 if (!strcmp(name, "svlan_id")) {
1636 len = num_arg(&user_buffer[i], 4, &value);
63adc6fb 1637 if (len < 0)
34954ddc 1638 return len;
63adc6fb 1639
34954ddc
FF		 1640 i += len;
1641 if ((value <= 4095) && ((pkt_dev->vlan_id != 0xffff))) {
1642 pkt_dev->svlan_id = value; /* turn on SVLAN */
1643
1644 if (debug)
f342cda7 1645 pr_debug("SVLAN turned on\n");
34954ddc
FF		 1646
1647 if (debug && pkt_dev->nr_labels)
f342cda7 1648 pr_debug("MPLS auto turned off\n");
34954ddc
FF		 1649
1650 pkt_dev->nr_labels = 0; /* turn off MPLS */
1651 sprintf(pg_result, "OK: svlan_id=%u", pkt_dev->svlan_id);
1652 } else {
1653 pkt_dev->vlan_id = 0xffff; /* turn off VLAN/SVLAN */
1654 pkt_dev->svlan_id = 0xffff;
1655
1656 if (debug)
f342cda7 1657 pr_debug("VLAN/SVLAN turned off\n");
34954ddc
FF		 1658 }
1659 return count;
1660 }
1661
1662 if (!strcmp(name, "svlan_p")) {
1663 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1664 if (len < 0)
34954ddc 1665 return len;
63adc6fb 1666
34954ddc
FF		 1667 i += len;
1668 if ((value <= 7) && (pkt_dev->svlan_id != 0xffff)) {
1669 pkt_dev->svlan_p = value;
1670 sprintf(pg_result, "OK: svlan_p=%u", pkt_dev->svlan_p);
1671 } else {
1672 sprintf(pg_result, "ERROR: svlan_p must be 0-7");
1673 }
1674 return count;
1675 }
1676
1677 if (!strcmp(name, "svlan_cfi")) {
1678 len = num_arg(&user_buffer[i], 1, &value);
63adc6fb 1679 if (len < 0)
34954ddc 1680 return len;
63adc6fb 1681
34954ddc
FF		 1682 i += len;
1683 if ((value <= 1) && (pkt_dev->svlan_id != 0xffff)) {
1684 pkt_dev->svlan_cfi = value;
1685 sprintf(pg_result, "OK: svlan_cfi=%u", pkt_dev->svlan_cfi);
1686 } else {
1687 sprintf(pg_result, "ERROR: svlan_cfi must be 0-1");
1688 }
ca6549af
SW		 1689 return count;
1690 }
1691
1ca7768c
FF		 1692 if (!strcmp(name, "tos")) {
1693 __u32 tmp_value = 0;
1694 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1695 if (len < 0)
1ca7768c 1696 return len;
63adc6fb 1697
1ca7768c
FF		 1698 i += len;
1699 if (len == 2) {
1700 pkt_dev->tos = tmp_value;
1701 sprintf(pg_result, "OK: tos=0x%02x", pkt_dev->tos);
1702 } else {
1703 sprintf(pg_result, "ERROR: tos must be 00-ff");
1704 }
1705 return count;
1706 }
1707
1708 if (!strcmp(name, "traffic_class")) {
1709 __u32 tmp_value = 0;
1710 len = hex32_arg(&user_buffer[i], 2, &tmp_value);
63adc6fb 1711 if (len < 0)
1ca7768c 1712 return len;
63adc6fb 1713
1ca7768c
FF		 1714 i += len;
1715 if (len == 2) {
1716 pkt_dev->traffic_class = tmp_value;
1717 sprintf(pg_result, "OK: traffic_class=0x%02x", pkt_dev->traffic_class);
1718 } else {
1719 sprintf(pg_result, "ERROR: traffic_class must be 00-ff");
1720 }
1721 return count;
1722 }
1723
9e50e3ac
JF		 1724 if (!strcmp(name, "skb_priority")) {
1725 len = num_arg(&user_buffer[i], 9, &value);
1726 if (len < 0)
1727 return len;
1728
1729 i += len;
1730 pkt_dev->skb_priority = value;
1731 sprintf(pg_result, "OK: skb_priority=%i",
1732 pkt_dev->skb_priority);
1733 return count;
1734 }
1735
1da177e4
LT		 1736 sprintf(pkt_dev->result, "No such parameter \"%s\"", name);
1737 return -EINVAL;
1738}
1739
d50a6b56 1740static int pktgen_if_open(struct inode *inode, struct file *file)
1da177e4 1741{
d9dda78b 1742 return single_open(file, pktgen_if_show, PDE_DATA(inode));
d50a6b56 1743}
1da177e4 1744
9a32144e 1745static const struct file_operations pktgen_if_fops = {
222f1806
LC		 1746 .owner = THIS_MODULE,
1747 .open = pktgen_if_open,
1748 .read = seq_read,
1749 .llseek = seq_lseek,
1750 .write = pktgen_if_write,
1751 .release = single_release,
d50a6b56 1752};
1da177e4 1753
d50a6b56
SH		 1754static int pktgen_thread_show(struct seq_file *seq, void *v)
1755{
222f1806 1756 struct pktgen_thread *t = seq->private;
648fda74 1757 const struct pktgen_dev *pkt_dev;
d50a6b56
SH		 1758
1759 BUG_ON(!t);
1da177e4 1760
97dc48e2 1761 seq_puts(seq, "Running: ");
1da177e4 1762
8788370a
JDB		 1763 rcu_read_lock();
1764 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1765 if (pkt_dev->running)
593f63b0 1766 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4 1767
97dc48e2 1768 seq_puts(seq, "\nStopped: ");
222f1806 1769
8788370a 1770 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
222f1806 1771 if (!pkt_dev->running)
593f63b0 1772 seq_printf(seq, "%s ", pkt_dev->odevname);
1da177e4
LT		 1773
1774 if (t->result[0])
d50a6b56 1775 seq_printf(seq, "\nResult: %s\n", t->result);
1da177e4 1776 else
97dc48e2 1777 seq_puts(seq, "\nResult: NA\n");
1da177e4 1778
8788370a 1779 rcu_read_unlock();
1da177e4 1780
d50a6b56 1781 return 0;
1da177e4
LT		 1782}
1783
d50a6b56 1784static ssize_t pktgen_thread_write(struct file *file,
222f1806
LC		 1785 const char __user * user_buffer,
1786 size_t count, loff_t * offset)
1da177e4 1787{
8a994a71 1788 struct seq_file *seq = file->private_data;
222f1806 1789 struct pktgen_thread *t = seq->private;
d6182223 1790 int i, max, len, ret;
1da177e4 1791 char name[40];
222f1806 1792 char *pg_result;
d50a6b56 1793
1da177e4 1794 if (count < 1) {
222f1806 1795 // sprintf(pg_result, "Wrong command format");
1da177e4
LT		 1796 return -EINVAL;
1797 }
d50a6b56 1798
d6182223
PG		 1799 max = count;
1800 len = count_trail_chars(user_buffer, max);
222f1806 1801 if (len < 0)
d50a6b56
SH		 1802 return len;
1803
d6182223 1804 i = len;
d50a6b56 1805
1da177e4
LT		 1806 /* Read variable name */
1807
1808 len = strn_len(&user_buffer[i], sizeof(name) - 1);
222f1806 1809 if (len < 0)
d50a6b56 1810 return len;
222f1806 1811
1da177e4
LT		 1812 memset(name, 0, sizeof(name));
1813 if (copy_from_user(name, &user_buffer[i], len))
1814 return -EFAULT;
1815 i += len;
d50a6b56 1816
222f1806 1817 max = count - i;
1da177e4 1818 len = count_trail_chars(&user_buffer[i], max);
222f1806 1819 if (len < 0)
d50a6b56
SH		 1820 return len;
1821
1da177e4
LT		 1822 i += len;
1823
d50a6b56 1824 if (debug)
f342cda7 1825 pr_debug("t=%s, count=%lu\n", name, (unsigned long)count);
1da177e4 1826
222f1806 1827 if (!t) {
f9467eae 1828 pr_err("ERROR: No thread\n");
1da177e4
LT		 1829 ret = -EINVAL;
1830 goto out;
1831 }
1832
1833 pg_result = &(t->result[0]);
1834
222f1806
LC		 1835 if (!strcmp(name, "add_device")) {
1836 char f[32];
1837 memset(f, 0, 32);
1da177e4 1838 len = strn_len(&user_buffer[i], sizeof(f) - 1);
222f1806
LC		 1839 if (len < 0) {
1840 ret = len;
1da177e4
LT		 1841 goto out;
1842 }
222f1806 1843 if (copy_from_user(f, &user_buffer[i], len))
1da177e4
LT		 1844 return -EFAULT;
1845 i += len;
6146e6a4 1846 mutex_lock(&pktgen_thread_lock);
604dfd6e 1847 ret = pktgen_add_device(t, f);
6146e6a4 1848 mutex_unlock(&pktgen_thread_lock);
604dfd6e
CW		 1849 if (!ret) {
1850 ret = count;
1851 sprintf(pg_result, "OK: add_device=%s", f);
1852 } else
1853 sprintf(pg_result, "ERROR: can not add device %s", f);
1da177e4
LT		 1854 goto out;
1855 }
1856
222f1806 1857 if (!strcmp(name, "rem_device_all")) {
6146e6a4 1858 mutex_lock(&pktgen_thread_lock);
95ed63f7 1859 t->control |= T_REMDEVALL;
6146e6a4 1860 mutex_unlock(&pktgen_thread_lock);
222f1806 1861 schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
1da177e4 1862 ret = count;
222f1806 1863 sprintf(pg_result, "OK: rem_device_all");
1da177e4
LT		 1864 goto out;
1865 }
1866
222f1806 1867 if (!strcmp(name, "max_before_softirq")) {
b163911f 1868 sprintf(pg_result, "OK: Note! max_before_softirq is obsoleted -- Do not use");
222f1806 1869 ret = count;
1da177e4
LT		 1870 goto out;
1871 }
1872
1873 ret = -EINVAL;
222f1806 1874out:
1da177e4
LT		 1875 return ret;
1876}
1877
d50a6b56 1878static int pktgen_thread_open(struct inode *inode, struct file *file)
1da177e4 1879{
d9dda78b 1880 return single_open(file, pktgen_thread_show, PDE_DATA(inode));
1da177e4
LT		 1881}
1882
9a32144e 1883static const struct file_operations pktgen_thread_fops = {
222f1806
LC		 1884 .owner = THIS_MODULE,
1885 .open = pktgen_thread_open,
1886 .read = seq_read,
1887 .llseek = seq_lseek,
1888 .write = pktgen_thread_write,
1889 .release = single_release,
d50a6b56 1890};
1da177e4
LT		 1891
1892/* Think find or remove for NN */
4e58a027
CW		 1893static struct pktgen_dev *__pktgen_NN_threads(const struct pktgen_net *pn,
1894 const char *ifname, int remove)
1da177e4
LT		 1895{
1896 struct pktgen_thread *t;
1897 struct pktgen_dev *pkt_dev = NULL;
3e984840 1898 bool exact = (remove == FIND);
1da177e4 1899
4e58a027 1900 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
3e984840 1901 pkt_dev = pktgen_find_dev(t, ifname, exact);
1da177e4 1902 if (pkt_dev) {
222f1806 1903 if (remove) {
222f1806
LC		 1904 pkt_dev->removal_mark = 1;
1905 t->control |= T_REMDEV;
222f1806 1906 }
1da177e4
LT		 1907 break;
1908 }
1da177e4 1909 }
222f1806 1910 return pkt_dev;
1da177e4
LT		 1911}
1912
95ed63f7
AK		 1913/*
1914 * mark a device for removal
1915 */
4e58a027 1916static void pktgen_mark_device(const struct pktgen_net *pn, const char *ifname)
1da177e4
LT		 1917{
1918 struct pktgen_dev *pkt_dev = NULL;
95ed63f7
AK		 1919 const int max_tries = 10, msec_per_try = 125;
1920 int i = 0;
95ed63f7 1921
6146e6a4 1922 mutex_lock(&pktgen_thread_lock);
f9467eae 1923 pr_debug("%s: marking %s for removal\n", __func__, ifname);
95ed63f7 1924
222f1806 1925 while (1) {
95ed63f7 1926
4e58a027 1927 pkt_dev = __pktgen_NN_threads(pn, ifname, REMOVE);
222f1806
LC		 1928 if (pkt_dev == NULL)
1929 break; /* success */
95ed63f7 1930
6146e6a4 1931 mutex_unlock(&pktgen_thread_lock);
f9467eae
JP		 1932 pr_debug("%s: waiting for %s to disappear....\n",
1933 __func__, ifname);
95ed63f7 1934 schedule_timeout_interruptible(msecs_to_jiffies(msec_per_try));
6146e6a4 1935 mutex_lock(&pktgen_thread_lock);
95ed63f7
AK		 1936
1937 if (++i >= max_tries) {
f9467eae
JP		 1938 pr_err("%s: timed out after waiting %d msec for device %s to be removed\n",
1939 __func__, msec_per_try * i, ifname);
95ed63f7
AK		 1940 break;
1941 }
1942
1943 }
1944
6146e6a4 1945 mutex_unlock(&pktgen_thread_lock);
39df232f 1946}
95ed63f7 1947
4e58a027 1948static void pktgen_change_name(const struct pktgen_net *pn, struct net_device *dev)
39df232f
SH		 1949{
1950 struct pktgen_thread *t;
1951
4e58a027 1952 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
39df232f
SH		 1953 struct pktgen_dev *pkt_dev;
1954
8788370a
JDB		 1955 rcu_read_lock();
1956 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
39df232f
SH		 1957 if (pkt_dev->odev != dev)
1958 continue;
1959
a8ca16ea 1960 proc_remove(pkt_dev->entry);
39df232f 1961
2975315b 1962 pkt_dev->entry = proc_create_data(dev->name, 0600,
4e58a027 1963 pn->proc_dir,
2975315b
AD		 1964 &pktgen_if_fops,
1965 pkt_dev);
39df232f 1966 if (!pkt_dev->entry)
f9467eae
JP		 1967 pr_err("can't move proc entry for '%s'\n",
1968 dev->name);
39df232f
SH		 1969 break;
1970 }
8788370a 1971 rcu_read_unlock();
39df232f 1972 }
1da177e4
LT		 1973}
1974
222f1806
LC		 1975static int pktgen_device_event(struct notifier_block *unused,
1976 unsigned long event, void *ptr)
1da177e4 1977{
351638e7 1978 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
4e58a027 1979 struct pktgen_net *pn = net_generic(dev_net(dev), pg_net_id);
1da177e4 1980
4e58a027 1981 if (pn->pktgen_exiting)
e9dc8653
EB		 1982 return NOTIFY_DONE;
1983
1da177e4
LT		 1984 /* It is OK that we do not hold the group lock right now,
1985 * as we run under the RTNL lock.
1986 */
1987
1988 switch (event) {
39df232f 1989 case NETDEV_CHANGENAME:
4e58a027 1990 pktgen_change_name(pn, dev);
1da177e4 1991 break;
222f1806 1992
1da177e4 1993 case NETDEV_UNREGISTER:
4e58a027 1994 pktgen_mark_device(pn, dev->name);
1da177e4 1995 break;
3ff50b79 1996 }
1da177e4
LT		 1997
1998 return NOTIFY_DONE;
1999}
2000
4e58a027
CW		 2001static struct net_device *pktgen_dev_get_by_name(const struct pktgen_net *pn,
2002 struct pktgen_dev *pkt_dev,
63adc6fb 2003 const char *ifname)
e6fce5b9
RO		 2004{
2005 char b[IFNAMSIZ+5];
d6182223 2006 int i;
e6fce5b9 2007
63adc6fb
SH		 2008 for (i = 0; ifname[i] != '@'; i++) {
2009 if (i == IFNAMSIZ)
e6fce5b9
RO		 2010 break;
2011
2012 b[i] = ifname[i];
2013 }
2014 b[i] = 0;
2015
4e58a027 2016 return dev_get_by_name(pn->net, b);
e6fce5b9
RO		 2017}
2018
2019
1da177e4
LT		 2020/* Associate pktgen_dev with a device. */
2021
4e58a027
CW		 2022static int pktgen_setup_dev(const struct pktgen_net *pn,
2023 struct pktgen_dev *pkt_dev, const char *ifname)
222f1806 2024{
1da177e4 2025 struct net_device *odev;
39df232f 2026 int err;
1da177e4
LT		 2027
2028 /* Clean old setups */
1da177e4
LT		 2029 if (pkt_dev->odev) {
2030 dev_put(pkt_dev->odev);
222f1806
LC		 2031 pkt_dev->odev = NULL;
2032 }
1da177e4 2033
4e58a027 2034 odev = pktgen_dev_get_by_name(pn, pkt_dev, ifname);
1da177e4 2035 if (!odev) {
f9467eae 2036 pr_err("no such netdevice: \"%s\"\n", ifname);
39df232f 2037 return -ENODEV;
1da177e4 2038 }
39df232f 2039
1da177e4 2040 if (odev->type != ARPHRD_ETHER) {
f9467eae 2041 pr_err("not an ethernet device: \"%s\"\n", ifname);
39df232f
SH		 2042 err = -EINVAL;
2043 } else if (!netif_running(odev)) {
f9467eae 2044 pr_err("device is down: \"%s\"\n", ifname);
39df232f
SH		 2045 err = -ENETDOWN;
2046 } else {
2047 pkt_dev->odev = odev;
2048 return 0;
1da177e4 2049 }
1da177e4 2050
1da177e4 2051 dev_put(odev);
39df232f 2052 return err;
1da177e4
LT		 2053}
2054
2055/* Read pkt_dev from the interface and set up internal pktgen_dev
2056 * structure to have the right information to create/send packets
2057 */
2058static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
2059{
64c00d81
AG		 2060 int ntxq;
2061
222f1806 2062 if (!pkt_dev->odev) {
f9467eae 2063 pr_err("ERROR: pkt_dev->odev == NULL in setup_inject\n");
222f1806
LC		 2064 sprintf(pkt_dev->result,
2065 "ERROR: pkt_dev->odev == NULL in setup_inject.\n");
2066 return;
2067 }
2068
64c00d81
AG		 2069 /* make sure that we don't pick a non-existing transmit queue */
2070 ntxq = pkt_dev->odev->real_num_tx_queues;
bfdbc0ac 2071
64c00d81 2072 if (ntxq <= pkt_dev->queue_map_min) {
294a0b7f
JP		 2073 pr_warn("WARNING: Requested queue_map_min (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2074 pkt_dev->queue_map_min, (ntxq ?: 1) - 1, ntxq,
2075 pkt_dev->odevname);
26e29eed 2076 pkt_dev->queue_map_min = (ntxq ?: 1) - 1;
64c00d81 2077 }
88271660 2078 if (pkt_dev->queue_map_max >= ntxq) {
294a0b7f
JP		 2079 pr_warn("WARNING: Requested queue_map_max (zero-based) (%d) exceeds valid range [0 - %d] for (%d) queues on %s, resetting\n",
2080 pkt_dev->queue_map_max, (ntxq ?: 1) - 1, ntxq,
2081 pkt_dev->odevname);
26e29eed 2082 pkt_dev->queue_map_max = (ntxq ?: 1) - 1;
64c00d81
AG		 2083 }
2084
222f1806 2085 /* Default to the interface's mac if not explicitly set. */
1da177e4 2086
f404e9a6 2087 if (is_zero_ether_addr(pkt_dev->src_mac))
9ea08b12 2088 ether_addr_copy(&(pkt_dev->hh[6]), pkt_dev->odev->dev_addr);
1da177e4 2089
222f1806 2090 /* Set up Dest MAC */
9ea08b12 2091 ether_addr_copy(&(pkt_dev->hh[0]), pkt_dev->dst_mac);
1da177e4 2092
222f1806 2093 if (pkt_dev->flags & F_IPV6) {
4c139b8c
AW		 2094 int i, set = 0, err = 1;
2095 struct inet6_dev *idev;
2096
68bf9f0b
AW		 2097 if (pkt_dev->min_pkt_size == 0) {
2098 pkt_dev->min_pkt_size = 14 + sizeof(struct ipv6hdr)
2099 + sizeof(struct udphdr)
2100 + sizeof(struct pktgen_hdr)
2101 + pkt_dev->pkt_overhead;
2102 }
2103
222f1806
LC		 2104 for (i = 0; i < IN6_ADDR_HSIZE; i++)
2105 if (pkt_dev->cur_in6_saddr.s6_addr[i]) {
1da177e4
LT		 2106 set = 1;
2107 break;
2108 }
2109
222f1806
LC		 2110 if (!set) {
2111
1da177e4
LT		 2112 /*
2113 * Use linklevel address if unconfigured.
2114 *
2115 * use ipv6_get_lladdr if/when it's get exported
2116 */
2117
8814c4b5 2118 rcu_read_lock();
63adc6fb
SH		 2119 idev = __in6_dev_get(pkt_dev->odev);
2120 if (idev) {
1da177e4
LT		 2121 struct inet6_ifaddr *ifp;
2122
2123 read_lock_bh(&idev->lock);
4c139b8c
AW		 2124 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2125 if ((ifp->scope & IFA_LINK) &&
f64f9e71 2126 !(ifp->flags & IFA_F_TENTATIVE)) {
4e3fd7a0 2127 pkt_dev->cur_in6_saddr = ifp->addr;
1da177e4
LT		 2128 err = 0;
2129 break;
2130 }
2131 }
2132 read_unlock_bh(&idev->lock);
2133 }
8814c4b5 2134 rcu_read_unlock();
222f1806 2135 if (err)
f9467eae 2136 pr_err("ERROR: IPv6 link address not available\n");
1da177e4 2137 }
222f1806 2138 } else {
68bf9f0b
AW		 2139 if (pkt_dev->min_pkt_size == 0) {
2140 pkt_dev->min_pkt_size = 14 + sizeof(struct iphdr)
2141 + sizeof(struct udphdr)
2142 + sizeof(struct pktgen_hdr)
2143 + pkt_dev->pkt_overhead;
2144 }
2145
1da177e4
LT		 2146 pkt_dev->saddr_min = 0;
2147 pkt_dev->saddr_max = 0;
2148 if (strlen(pkt_dev->src_min) == 0) {
222f1806
LC		 2149
2150 struct in_device *in_dev;
1da177e4
LT		 2151
2152 rcu_read_lock();
e5ed6399 2153 in_dev = __in_dev_get_rcu(pkt_dev->odev);
1da177e4
LT		 2154 if (in_dev) {
2155 if (in_dev->ifa_list) {
222f1806
LC		 2156 pkt_dev->saddr_min =
2157 in_dev->ifa_list->ifa_address;
1da177e4
LT		 2158 pkt_dev->saddr_max = pkt_dev->saddr_min;
2159 }
1da177e4
LT		 2160 }
2161 rcu_read_unlock();
222f1806 2162 } else {
1da177e4
LT		 2163 pkt_dev->saddr_min = in_aton(pkt_dev->src_min);
2164 pkt_dev->saddr_max = in_aton(pkt_dev->src_max);
2165 }
2166
2167 pkt_dev->daddr_min = in_aton(pkt_dev->dst_min);
2168 pkt_dev->daddr_max = in_aton(pkt_dev->dst_max);
2169 }
222f1806 2170 /* Initialize current values. */
68bf9f0b
AW		 2171 pkt_dev->cur_pkt_size = pkt_dev->min_pkt_size;
2172 if (pkt_dev->min_pkt_size > pkt_dev->max_pkt_size)
2173 pkt_dev->max_pkt_size = pkt_dev->min_pkt_size;
2174
222f1806
LC		 2175 pkt_dev->cur_dst_mac_offset = 0;
2176 pkt_dev->cur_src_mac_offset = 0;
2177 pkt_dev->cur_saddr = pkt_dev->saddr_min;
2178 pkt_dev->cur_daddr = pkt_dev->daddr_min;
2179 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
2180 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
1da177e4
LT		 2181 pkt_dev->nflows = 0;
2182}
2183
fd29cf72
SH		 2184
2185static void spin(struct pktgen_dev *pkt_dev, ktime_t spin_until)
2186{
ef87979c 2187 ktime_t start_time, end_time;
417bc4b8 2188 s64 remaining;
2bc481cf
SH		 2189 struct hrtimer_sleeper t;
2190
2191 hrtimer_init_on_stack(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2192 hrtimer_set_expires(&t.timer, spin_until);
2193
43d28b65 2194 remaining = ktime_to_ns(hrtimer_expires_remaining(&t.timer));
417bc4b8
ED		 2195 if (remaining <= 0) {
2196 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
2bc481cf 2197 return;
417bc4b8 2198 }
2bc481cf 2199
398f382c 2200 start_time = ktime_get();
33136d12
ED		 2201 if (remaining < 100000) {
2202 /* for small delays (<100us), just loop until limit is reached */
2203 do {
398f382c
DB		 2204 end_time = ktime_get();
2205 } while (ktime_compare(end_time, spin_until) < 0);
33136d12 2206 } else {
2bc481cf
SH		 2207 /* see do_nanosleep */
2208 hrtimer_init_sleeper(&t, current);
2209 do {
2210 set_current_state(TASK_INTERRUPTIBLE);
2211 hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS);
2212 if (!hrtimer_active(&t.timer))
2213 t.task = NULL;
2214
2215 if (likely(t.task))
1da177e4 2216 schedule();
1da177e4 2217
2bc481cf
SH		 2218 hrtimer_cancel(&t.timer);
2219 } while (t.task && pkt_dev->running && !signal_pending(current));
2220 __set_current_state(TASK_RUNNING);
398f382c 2221 end_time = ktime_get();
1da177e4 2222 }
ef87979c
SH		 2223
2224 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(end_time, start_time));
07a0f0f0 2225 pkt_dev->next_tx = ktime_add_ns(spin_until, pkt_dev->delay);
1da177e4
LT		 2226}
2227
16dab72f
JHS		 2228static inline void set_pkt_overhead(struct pktgen_dev *pkt_dev)
2229{
a553e4a6 2230 pkt_dev->pkt_overhead = 0;
16dab72f
JHS		 2231 pkt_dev->pkt_overhead += pkt_dev->nr_labels*sizeof(u32);
2232 pkt_dev->pkt_overhead += VLAN_TAG_SIZE(pkt_dev);
2233 pkt_dev->pkt_overhead += SVLAN_TAG_SIZE(pkt_dev);
2234}
2235
648fda74 2236static inline int f_seen(const struct pktgen_dev *pkt_dev, int flow)
007a531b 2237{
648fda74 2238 return !!(pkt_dev->flows[flow].flags & F_INIT);
007a531b
JHS		 2239}
2240
2241static inline int f_pick(struct pktgen_dev *pkt_dev)
2242{
2243 int flow = pkt_dev->curfl;
2244
2245 if (pkt_dev->flags & F_FLOW_SEQ) {
2246 if (pkt_dev->flows[flow].count >= pkt_dev->lflow) {
2247 /* reset time */
2248 pkt_dev->flows[flow].count = 0;
1211a645 2249 pkt_dev->flows[flow].flags = 0;
007a531b
JHS		 2250 pkt_dev->curfl += 1;
2251 if (pkt_dev->curfl >= pkt_dev->cflows)
2252 pkt_dev->curfl = 0; /*reset */
2253 }
2254 } else {
33d7c5e5 2255 flow = prandom_u32() % pkt_dev->cflows;
1211a645 2256 pkt_dev->curfl = flow;
007a531b 2257
1211a645 2258 if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
007a531b 2259 pkt_dev->flows[flow].count = 0;
1211a645
RO		 2260 pkt_dev->flows[flow].flags = 0;
2261 }
007a531b
JHS		 2262 }
2263
2264 return pkt_dev->curfl;
2265}
2266
a553e4a6
JHS		 2267
2268#ifdef CONFIG_XFRM
2269/* If there was already an IPSEC SA, we keep it as is, else
2270 * we go look for it ...
2271*/
bd55775c 2272#define DUMMY_MARK 0
fea1ab0f 2273static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
a553e4a6
JHS		 2274{
2275 struct xfrm_state *x = pkt_dev->flows[flow].x;
4e58a027 2276 struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
a553e4a6 2277 if (!x) {
c454997e
FD		 2278
2279 if (pkt_dev->spi) {
2280 /* We need as quick as possible to find the right SA
2281 * Searching with minimum criteria to archieve this.
2282 */
2283 x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
2284 } else {
2285 /* slow path: we dont already have xfrm_state */
2286 x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
2287 (xfrm_address_t *)&pkt_dev->cur_daddr,
2288 (xfrm_address_t *)&pkt_dev->cur_saddr,
2289 AF_INET,
2290 pkt_dev->ipsmode,
2291 pkt_dev->ipsproto, 0);
2292 }
a553e4a6
JHS		 2293 if (x) {
2294 pkt_dev->flows[flow].x = x;
2295 set_pkt_overhead(pkt_dev);
63adc6fb 2296 pkt_dev->pkt_overhead += x->props.header_len;
a553e4a6
JHS		 2297 }
2298
2299 }
2300}
2301#endif
fd2ea0a7
DM		 2302static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
2303{
e6fce5b9
RO		 2304
2305 if (pkt_dev->flags & F_QUEUE_MAP_CPU)
2306 pkt_dev->cur_queue_map = smp_processor_id();
2307
896a7cf8 2308 else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
fd2ea0a7
DM		 2309 __u16 t;
2310 if (pkt_dev->flags & F_QUEUE_MAP_RND) {
33d7c5e5 2311 t = prandom_u32() %
fd2ea0a7
DM		 2312 (pkt_dev->queue_map_max -
2313 pkt_dev->queue_map_min + 1)
2314 + pkt_dev->queue_map_min;
2315 } else {
2316 t = pkt_dev->cur_queue_map + 1;
2317 if (t > pkt_dev->queue_map_max)
2318 t = pkt_dev->queue_map_min;
2319 }
2320 pkt_dev->cur_queue_map = t;
2321 }
bfdbc0ac 2322 pkt_dev->cur_queue_map = pkt_dev->cur_queue_map % pkt_dev->odev->real_num_tx_queues;
fd2ea0a7
DM		 2323}
2324
1da177e4
LT		 2325/* Increment/randomize headers according to flags and current values
2326 * for IP src/dest, UDP src/dst port, MAC-Addr src/dst
2327 */
222f1806
LC		 2328static void mod_cur_headers(struct pktgen_dev *pkt_dev)
2329{
2330 __u32 imn;
2331 __u32 imx;
2332 int flow = 0;
1da177e4 2333
007a531b
JHS		 2334 if (pkt_dev->cflows)
2335 flow = f_pick(pkt_dev);
1da177e4
LT		 2336
2337 /* Deal with source MAC */
222f1806
LC		 2338 if (pkt_dev->src_mac_count > 1) {
2339 __u32 mc;
2340 __u32 tmp;
2341
2342 if (pkt_dev->flags & F_MACSRC_RND)
33d7c5e5 2343 mc = prandom_u32() % pkt_dev->src_mac_count;
222f1806
LC		 2344 else {
2345 mc = pkt_dev->cur_src_mac_offset++;
ff2a79a5 2346 if (pkt_dev->cur_src_mac_offset >=
222f1806
LC		 2347 pkt_dev->src_mac_count)
2348 pkt_dev->cur_src_mac_offset = 0;
2349 }
2350
2351 tmp = pkt_dev->src_mac[5] + (mc & 0xFF);
2352 pkt_dev->hh[11] = tmp;
2353 tmp = (pkt_dev->src_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2354 pkt_dev->hh[10] = tmp;
2355 tmp = (pkt_dev->src_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2356 pkt_dev->hh[9] = tmp;
2357 tmp = (pkt_dev->src_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2358 pkt_dev->hh[8] = tmp;
2359 tmp = (pkt_dev->src_mac[1] + (tmp >> 8));
2360 pkt_dev->hh[7] = tmp;
2361 }
2362
2363 /* Deal with Destination MAC */
2364 if (pkt_dev->dst_mac_count > 1) {
2365 __u32 mc;
2366 __u32 tmp;
2367
2368 if (pkt_dev->flags & F_MACDST_RND)
33d7c5e5 2369 mc = prandom_u32() % pkt_dev->dst_mac_count;
222f1806
LC		 2370
2371 else {
2372 mc = pkt_dev->cur_dst_mac_offset++;
ff2a79a5 2373 if (pkt_dev->cur_dst_mac_offset >=
222f1806
LC		 2374 pkt_dev->dst_mac_count) {
2375 pkt_dev->cur_dst_mac_offset = 0;
2376 }
2377 }
2378
2379 tmp = pkt_dev->dst_mac[5] + (mc & 0xFF);
2380 pkt_dev->hh[5] = tmp;
2381 tmp = (pkt_dev->dst_mac[4] + ((mc >> 8) & 0xFF) + (tmp >> 8));
2382 pkt_dev->hh[4] = tmp;
2383 tmp = (pkt_dev->dst_mac[3] + ((mc >> 16) & 0xFF) + (tmp >> 8));
2384 pkt_dev->hh[3] = tmp;
2385 tmp = (pkt_dev->dst_mac[2] + ((mc >> 24) & 0xFF) + (tmp >> 8));
2386 pkt_dev->hh[2] = tmp;
2387 tmp = (pkt_dev->dst_mac[1] + (tmp >> 8));
2388 pkt_dev->hh[1] = tmp;
2389 }
2390
ca6549af 2391 if (pkt_dev->flags & F_MPLS_RND) {
95c96174 2392 unsigned int i;
e71a4783 2393 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af
SW		 2394 if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
2395 pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
33d7c5e5 2396 ((__force __be32)prandom_u32() &
ca6549af
SW		 2397 htonl(0x000fffff));
2398 }
2399
34954ddc 2400 if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
33d7c5e5 2401 pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2402 }
2403
2404 if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
33d7c5e5 2405 pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
34954ddc
FF		 2406 }
2407
222f1806
LC		 2408 if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
2409 if (pkt_dev->flags & F_UDPSRC_RND)
33d7c5e5 2410 pkt_dev->cur_udp_src = prandom_u32() %
5fa6fc76
SH		 2411 (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
2412 + pkt_dev->udp_src_min;
222f1806
LC		 2413
2414 else {
1da177e4
LT		 2415 pkt_dev->cur_udp_src++;
2416 if (pkt_dev->cur_udp_src >= pkt_dev->udp_src_max)
2417 pkt_dev->cur_udp_src = pkt_dev->udp_src_min;
222f1806
LC		 2418 }
2419 }
2420
2421 if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
2422 if (pkt_dev->flags & F_UDPDST_RND) {
33d7c5e5 2423 pkt_dev->cur_udp_dst = prandom_u32() %
5fa6fc76
SH		 2424 (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
2425 + pkt_dev->udp_dst_min;
222f1806 2426 } else {
1da177e4 2427 pkt_dev->cur_udp_dst++;
222f1806 2428 if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
1da177e4 2429 pkt_dev->cur_udp_dst = pkt_dev->udp_dst_min;
222f1806
LC		 2430 }
2431 }
1da177e4
LT		 2432
2433 if (!(pkt_dev->flags & F_IPV6)) {
2434
63adc6fb
SH		 2435 imn = ntohl(pkt_dev->saddr_min);
2436 imx = ntohl(pkt_dev->saddr_max);
2437 if (imn < imx) {
1da177e4 2438 __u32 t;
222f1806 2439 if (pkt_dev->flags & F_IPSRC_RND)
33d7c5e5 2440 t = prandom_u32() % (imx - imn) + imn;
1da177e4
LT		 2441 else {
2442 t = ntohl(pkt_dev->cur_saddr);
2443 t++;
63adc6fb 2444 if (t > imx)
1da177e4 2445 t = imn;
63adc6fb 2446
1da177e4
LT		 2447 }
2448 pkt_dev->cur_saddr = htonl(t);
2449 }
222f1806 2450
007a531b 2451 if (pkt_dev->cflows && f_seen(pkt_dev, flow)) {
1da177e4
LT		 2452 pkt_dev->cur_daddr = pkt_dev->flows[flow].cur_daddr;
2453 } else {
252e3346
AV		 2454 imn = ntohl(pkt_dev->daddr_min);
2455 imx = ntohl(pkt_dev->daddr_max);
2456 if (imn < imx) {
1da177e4 2457 __u32 t;
252e3346 2458 __be32 s;
1da177e4
LT		 2459 if (pkt_dev->flags & F_IPDST_RND) {
2460
70e3ba72 2461 do {
33d7c5e5
AM		 2462 t = prandom_u32() %
2463 (imx - imn) + imn;
252e3346 2464 s = htonl(t);
70e3ba72
AM		 2465 } while (ipv4_is_loopback(s) ||
2466 ipv4_is_multicast(s) ||
2467 ipv4_is_lbcast(s) ||
2468 ipv4_is_zeronet(s) ||
2469 ipv4_is_local_multicast(s));
252e3346
AV		 2470 pkt_dev->cur_daddr = s;
2471 } else {
1da177e4
LT		 2472 t = ntohl(pkt_dev->cur_daddr);
2473 t++;
2474 if (t > imx) {
2475 t = imn;
2476 }
2477 pkt_dev->cur_daddr = htonl(t);
2478 }
2479 }
222f1806 2480 if (pkt_dev->cflows) {
007a531b 2481 pkt_dev->flows[flow].flags |= F_INIT;
222f1806
LC		 2482 pkt_dev->flows[flow].cur_daddr =
2483 pkt_dev->cur_daddr;
a553e4a6
JHS		 2484#ifdef CONFIG_XFRM
2485 if (pkt_dev->flags & F_IPSEC_ON)
2486 get_ipsec_sa(pkt_dev, flow);
2487#endif
1da177e4
LT		 2488 pkt_dev->nflows++;
2489 }
2490 }
222f1806
LC		 2491 } else { /* IPV6 * */
2492
06e30411 2493 if (!ipv6_addr_any(&pkt_dev->min_in6_daddr)) {
1da177e4
LT		 2494 int i;
2495
2496 /* Only random destinations yet */
2497
222f1806 2498 for (i = 0; i < 4; i++) {
1da177e4 2499 pkt_dev->cur_in6_daddr.s6_addr32[i] =
33d7c5e5 2500 (((__force __be32)prandom_u32() |
222f1806
LC		 2501 pkt_dev->min_in6_daddr.s6_addr32[i]) &
2502 pkt_dev->max_in6_daddr.s6_addr32[i]);
1da177e4 2503 }
222f1806 2504 }
1da177e4
LT		 2505 }
2506
222f1806
LC		 2507 if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
2508 __u32 t;
2509 if (pkt_dev->flags & F_TXSIZE_RND) {
33d7c5e5 2510 t = prandom_u32() %
5fa6fc76
SH		 2511 (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
2512 + pkt_dev->min_pkt_size;
222f1806 2513 } else {
1da177e4 2514 t = pkt_dev->cur_pkt_size + 1;
222f1806 2515 if (t > pkt_dev->max_pkt_size)
1da177e4 2516 t = pkt_dev->min_pkt_size;
222f1806
LC		 2517 }
2518 pkt_dev->cur_pkt_size = t;
2519 }
1da177e4 2520
fd2ea0a7 2521 set_cur_queue_map(pkt_dev);
45b270f8 2522
1da177e4
LT		 2523 pkt_dev->flows[flow].count++;
2524}
2525
a553e4a6
JHS		 2526
2527#ifdef CONFIG_XFRM
5537a055 2528static u32 pktgen_dst_metrics[RTAX_MAX + 1] = {
cf93d47e
FD		 2529
2530 [RTAX_HOPLIMIT] = 0x5, /* Set a static hoplimit */
2531};
2532
a553e4a6
JHS		 2533static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
2534{
2535 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2536 int err = 0;
6de9ace4 2537 struct net *net = dev_net(pkt_dev->odev);
a553e4a6
JHS		 2538
2539 if (!x)
2540 return 0;
2541 /* XXX: we dont support tunnel mode for now until
2542 * we resolve the dst issue */
cf93d47e 2543 if ((x->props.mode != XFRM_MODE_TRANSPORT) && (pkt_dev->spi == 0))
a553e4a6
JHS		 2544 return 0;
2545
cf93d47e
FD		 2546 /* But when user specify an valid SPI, transformation
2547 * supports both transport/tunnel mode + ESP/AH type.
2548 */
2549 if ((x->props.mode == XFRM_MODE_TUNNEL) && (pkt_dev->spi != 0))
2550 skb->_skb_refdst = (unsigned long)&pkt_dev->dst | SKB_DST_NOREF;
2551
2552 rcu_read_lock_bh();
13996378 2553 err = x->outer_mode->output(x, skb);
cf93d47e 2554 rcu_read_unlock_bh();
6de9ace4
FD		 2555 if (err) {
2556 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
a553e4a6 2557 goto error;
6de9ace4 2558 }
a553e4a6 2559 err = x->type->output(x, skb);
6de9ace4
FD		 2560 if (err) {
2561 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
a553e4a6 2562 goto error;
6de9ace4 2563 }
0af0a413 2564 spin_lock_bh(&x->lock);
63adc6fb 2565 x->curlft.bytes += skb->len;
a553e4a6 2566 x->curlft.packets++;
0af0a413 2567 spin_unlock_bh(&x->lock);
a553e4a6 2568error:
a553e4a6
JHS		 2569 return err;
2570}
2571
475ac1e4 2572static void free_SAs(struct pktgen_dev *pkt_dev)
a553e4a6
JHS		 2573{
2574 if (pkt_dev->cflows) {
2575 /* let go of the SAs if we have them */
d6182223
PG		 2576 int i;
2577 for (i = 0; i < pkt_dev->cflows; i++) {
a553e4a6
JHS		 2578 struct xfrm_state *x = pkt_dev->flows[i].x;
2579 if (x) {
2580 xfrm_state_put(x);
2581 pkt_dev->flows[i].x = NULL;
2582 }
2583 }
2584 }
2585}
2586
475ac1e4 2587static int process_ipsec(struct pktgen_dev *pkt_dev,
a553e4a6
JHS		 2588 struct sk_buff *skb, __be16 protocol)
2589{
2590 if (pkt_dev->flags & F_IPSEC_ON) {
2591 struct xfrm_state *x = pkt_dev->flows[pkt_dev->curfl].x;
2592 int nhead = 0;
2593 if (x) {
2594 int ret;
2595 __u8 *eth;
3868204d 2596 struct iphdr *iph;
2597
a553e4a6 2598 nhead = x->props.header_len - skb_headroom(skb);
63adc6fb 2599 if (nhead > 0) {
a553e4a6
JHS		 2600 ret = pskb_expand_head(skb, nhead, 0, GFP_ATOMIC);
2601 if (ret < 0) {
f9467eae
JP		 2602 pr_err("Error expanding ipsec packet %d\n",
2603 ret);
b4bb4ac8 2604 goto err;
a553e4a6
JHS		 2605 }
2606 }
2607
2608 /* ipsec is not expecting ll header */
2609 skb_pull(skb, ETH_HLEN);
2610 ret = pktgen_output_ipsec(skb, pkt_dev);
2611 if (ret) {
f9467eae 2612 pr_err("Error creating ipsec packet %d\n", ret);
b4bb4ac8 2613 goto err;
a553e4a6
JHS		 2614 }
2615 /* restore ll */
2616 eth = (__u8 *) skb_push(skb, ETH_HLEN);
2617 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2618 *(u16 *) &eth[12] = protocol;
3868204d 2619
2620 /* Update IPv4 header len as well as checksum value */
2621 iph = ip_hdr(skb);
2622 iph->tot_len = htons(skb->len - ETH_HLEN);
2623 ip_send_check(iph);
a553e4a6
JHS		 2624 }
2625 }
2626 return 1;
b4bb4ac8
IJ		 2627err:
2628 kfree_skb(skb);
2629 return 0;
a553e4a6
JHS		 2630}
2631#endif
2632
ca6549af
SW		 2633static void mpls_push(__be32 *mpls, struct pktgen_dev *pkt_dev)
2634{
95c96174 2635 unsigned int i;
63adc6fb 2636 for (i = 0; i < pkt_dev->nr_labels; i++)
ca6549af 2637 *mpls++ = pkt_dev->labels[i] & ~MPLS_STACK_BOTTOM;
63adc6fb 2638
ca6549af
SW		 2639 mpls--;
2640 *mpls |= MPLS_STACK_BOTTOM;
2641}
2642
0f37c605
AV		 2643static inline __be16 build_tci(unsigned int id, unsigned int cfi,
2644 unsigned int prio)
2645{
2646 return htons(id | (cfi << 12) | (prio << 13));
2647}
2648
26ad7879
ED		 2649static void pktgen_finalize_skb(struct pktgen_dev *pkt_dev, struct sk_buff *skb,
2650 int datalen)
2651{
2652 struct timeval timestamp;
2653 struct pktgen_hdr *pgh;
2654
2655 pgh = (struct pktgen_hdr *)skb_put(skb, sizeof(*pgh));
2656 datalen -= sizeof(*pgh);
2657
2658 if (pkt_dev->nfrags <= 0) {
05aebe2e 2659 memset(skb_put(skb, datalen), 0, datalen);
26ad7879
ED		 2660 } else {
2661 int frags = pkt_dev->nfrags;
2662 int i, len;
7d36a991 2663 int frag_len;
26ad7879
ED		 2664
2665
2666 if (frags > MAX_SKB_FRAGS)
2667 frags = MAX_SKB_FRAGS;
2668 len = datalen - frags * PAGE_SIZE;
2669 if (len > 0) {
2670 memset(skb_put(skb, len), 0, len);
2671 datalen = frags * PAGE_SIZE;
2672 }
2673
2674 i = 0;
7d36a991 2675 frag_len = (datalen/frags) < PAGE_SIZE ?
2676 (datalen/frags) : PAGE_SIZE;
26ad7879
ED		 2677 while (datalen > 0) {
2678 if (unlikely(!pkt_dev->page)) {
2679 int node = numa_node_id();
2680
2681 if (pkt_dev->node >= 0 && (pkt_dev->flags & F_NODE))
2682 node = pkt_dev->node;
2683 pkt_dev->page = alloc_pages_node(node, GFP_KERNEL | __GFP_ZERO, 0);
2684 if (!pkt_dev->page)
2685 break;
2686 }
a0bec1cd 2687 get_page(pkt_dev->page);
ea2ab693 2688 skb_frag_set_page(skb, i, pkt_dev->page);
26ad7879 2689 skb_shinfo(skb)->frags[i].page_offset = 0;
7d36a991 2690 /*last fragment, fill rest of data*/
2691 if (i == (frags - 1))
9e903e08
ED		 2692 skb_frag_size_set(&skb_shinfo(skb)->frags[i],
2693 (datalen < PAGE_SIZE ? datalen : PAGE_SIZE));
7d36a991 2694 else
9e903e08
ED		 2695 skb_frag_size_set(&skb_shinfo(skb)->frags[i], frag_len);
2696 datalen -= skb_frag_size(&skb_shinfo(skb)->frags[i]);
2697 skb->len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
2698 skb->data_len += skb_frag_size(&skb_shinfo(skb)->frags[i]);
26ad7879
ED		 2699 i++;
2700 skb_shinfo(skb)->nr_frags = i;
2701 }
26ad7879
ED		 2702 }
2703
2704 /* Stamp the time, and sequence number,
2705 * convert them to network byte order
2706 */
2707 pgh->pgh_magic = htonl(PKTGEN_MAGIC);
2708 pgh->seq_num = htonl(pkt_dev->seq_num);
2709
afb84b62
JDB		 2710 if (pkt_dev->flags & F_NO_TIMESTAMP) {
2711 pgh->tv_sec = 0;
2712 pgh->tv_usec = 0;
2713 } else {
2714 do_gettimeofday(&timestamp);
2715 pgh->tv_sec = htonl(timestamp.tv_sec);
2716 pgh->tv_usec = htonl(timestamp.tv_usec);
2717 }
26ad7879
ED		 2718}
2719
7a6e288d
DB		 2720static struct sk_buff *pktgen_alloc_skb(struct net_device *dev,
2721 struct pktgen_dev *pkt_dev,
2722 unsigned int extralen)
2723{
2724 struct sk_buff *skb = NULL;
2725 unsigned int size = pkt_dev->cur_pkt_size + 64 + extralen +
2726 pkt_dev->pkt_overhead;
2727
2728 if (pkt_dev->flags & F_NODE) {
2729 int node = pkt_dev->node >= 0 ? pkt_dev->node : numa_node_id();
2730
2731 skb = __alloc_skb(NET_SKB_PAD + size, GFP_NOWAIT, 0, node);
2732 if (likely(skb)) {
2733 skb_reserve(skb, NET_SKB_PAD);
2734 skb->dev = dev;
2735 }
2736 } else {
2737 skb = __netdev_alloc_skb(dev, size, GFP_NOWAIT);
2738 }
2739
2740 return skb;
2741}
2742
222f1806
LC		 2743static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
2744 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2745{
2746 struct sk_buff *skb = NULL;
2747 __u8 *eth;
2748 struct udphdr *udph;
2749 int datalen, iplen;
2750 struct iphdr *iph;
d5f1ce9a 2751 __be16 protocol = htons(ETH_P_IP);
ca6549af 2752 __be32 *mpls;
34954ddc
FF		 2753 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2754 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2755 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2756 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2757 u16 queue_map;
ca6549af
SW		 2758
2759 if (pkt_dev->nr_labels)
d5f1ce9a 2760 protocol = htons(ETH_P_MPLS_UC);
222f1806 2761
34954ddc 2762 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2763 protocol = htons(ETH_P_8021Q);
34954ddc 2764
64053bee
RO		 2765 /* Update any of the values, used when we're incrementing various
2766 * fields.
2767 */
2768 mod_cur_headers(pkt_dev);
eb589063 2769 queue_map = pkt_dev->cur_queue_map;
64053bee 2770
7ac5459e 2771 datalen = (odev->hard_header_len + 16) & ~0xf;
e99b99b4 2772
7a6e288d 2773 skb = pktgen_alloc_skb(odev, pkt_dev, datalen);
1da177e4
LT		 2774 if (!skb) {
2775 sprintf(pkt_dev->result, "No memory");
2776 return NULL;
2777 }
2778
7a6e288d 2779 prefetchw(skb->data);
7ac5459e 2780 skb_reserve(skb, datalen);
1da177e4
LT		 2781
2782 /* Reserve for ethernet and IP header */
2783 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2784 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2785 if (pkt_dev->nr_labels)
2786 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2787
2788 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2789 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2790 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2791 *svlan_tci = build_tci(pkt_dev->svlan_id,
2792 pkt_dev->svlan_cfi,
2793 pkt_dev->svlan_p);
34954ddc 2794 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2795 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2796 }
2797 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2798 *vlan_tci = build_tci(pkt_dev->vlan_id,
2799 pkt_dev->vlan_cfi,
2800 pkt_dev->vlan_p);
34954ddc 2801 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2802 *vlan_encapsulated_proto = htons(ETH_P_IP);
34954ddc
FF		 2803 }
2804
525cebed
TG		 2805 skb_set_mac_header(skb, 0);
2806 skb_set_network_header(skb, skb->len);
2807 iph = (struct iphdr *) skb_put(skb, sizeof(struct iphdr));
2808
2809 skb_set_transport_header(skb, skb->len);
2810 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2811 skb_set_queue_mapping(skb, queue_map);
9e50e3ac
JF		 2812 skb->priority = pkt_dev->skb_priority;
2813
1da177e4 2814 memcpy(eth, pkt_dev->hh, 12);
252e3346 2815 *(__be16 *) & eth[12] = protocol;
1da177e4 2816
ca6549af
SW		 2817 /* Eth + IPh + UDPh + mpls */
2818 datalen = pkt_dev->cur_pkt_size - 14 - 20 - 8 -
16dab72f 2819 pkt_dev->pkt_overhead;
6af773e7 2820 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr))
1da177e4 2821 datalen = sizeof(struct pktgen_hdr);
222f1806 2822
1da177e4
LT		 2823 udph->source = htons(pkt_dev->cur_udp_src);
2824 udph->dest = htons(pkt_dev->cur_udp_dst);
222f1806 2825 udph->len = htons(datalen + 8); /* DATA + udphdr */
c26bf4a5 2826 udph->check = 0;
1da177e4
LT		 2827
2828 iph->ihl = 5;
2829 iph->version = 4;
2830 iph->ttl = 32;
1ca7768c 2831 iph->tos = pkt_dev->tos;
222f1806 2832 iph->protocol = IPPROTO_UDP; /* UDP */
1da177e4
LT		 2833 iph->saddr = pkt_dev->cur_saddr;
2834 iph->daddr = pkt_dev->cur_daddr;
66ed1e5e
ED		 2835 iph->id = htons(pkt_dev->ip_id);
2836 pkt_dev->ip_id++;
1da177e4
LT		 2837 iph->frag_off = 0;
2838 iplen = 20 + 8 + datalen;
2839 iph->tot_len = htons(iplen);
03c633e7 2840 ip_send_check(iph);
ca6549af 2841 skb->protocol = protocol;
1da177e4
LT		 2842 skb->dev = odev;
2843 skb->pkt_type = PACKET_HOST;
c26bf4a5 2844
7744b5f3
SD		 2845 pktgen_finalize_skb(pkt_dev, skb, datalen);
2846
c26bf4a5
TG		 2847 if (!(pkt_dev->flags & F_UDPCSUM)) {
2848 skb->ip_summed = CHECKSUM_NONE;
2849 } else if (odev->features & NETIF_F_V4_CSUM) {
2850 skb->ip_summed = CHECKSUM_PARTIAL;
2851 skb->csum = 0;
7744b5f3 2852 udp4_hwcsum(skb, iph->saddr, iph->daddr);
c26bf4a5 2853 } else {
7744b5f3 2854 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), datalen + 8, 0);
c26bf4a5
TG		 2855
2856 /* add protocol-dependent pseudo-header */
7744b5f3 2857 udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
c26bf4a5
TG		 2858 datalen + 8, IPPROTO_UDP, csum);
2859
2860 if (udph->check == 0)
2861 udph->check = CSUM_MANGLED_0;
2862 }
2863
a553e4a6
JHS		 2864#ifdef CONFIG_XFRM
2865 if (!process_ipsec(pkt_dev, skb, protocol))
2866 return NULL;
2867#endif
2868
1da177e4
LT		 2869 return skb;
2870}
2871
222f1806
LC		 2872static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
2873 struct pktgen_dev *pkt_dev)
1da177e4
LT		 2874{
2875 struct sk_buff *skb = NULL;
2876 __u8 *eth;
2877 struct udphdr *udph;
c26bf4a5 2878 int datalen, udplen;
1da177e4 2879 struct ipv6hdr *iph;
d5f1ce9a 2880 __be16 protocol = htons(ETH_P_IPV6);
ca6549af 2881 __be32 *mpls;
34954ddc
FF		 2882 __be16 *vlan_tci = NULL; /* Encapsulates priority and VLAN ID */
2883 __be16 *vlan_encapsulated_proto = NULL; /* packet type ID field (or len) for VLAN tag */
2884 __be16 *svlan_tci = NULL; /* Encapsulates priority and SVLAN ID */
2885 __be16 *svlan_encapsulated_proto = NULL; /* packet type ID field (or len) for SVLAN tag */
fd2ea0a7 2886 u16 queue_map;
ca6549af
SW		 2887
2888 if (pkt_dev->nr_labels)
d5f1ce9a 2889 protocol = htons(ETH_P_MPLS_UC);
64053bee 2890
34954ddc 2891 if (pkt_dev->vlan_id != 0xffff)
d5f1ce9a 2892 protocol = htons(ETH_P_8021Q);
34954ddc 2893
64053bee
RO		 2894 /* Update any of the values, used when we're incrementing various
2895 * fields.
2896 */
2897 mod_cur_headers(pkt_dev);
eb589063 2898 queue_map = pkt_dev->cur_queue_map;
64053bee 2899
7a6e288d 2900 skb = pktgen_alloc_skb(odev, pkt_dev, 16);
1da177e4
LT		 2901 if (!skb) {
2902 sprintf(pkt_dev->result, "No memory");
2903 return NULL;
2904 }
2905
7a6e288d 2906 prefetchw(skb->data);
1da177e4
LT		 2907 skb_reserve(skb, 16);
2908
2909 /* Reserve for ethernet and IP header */
2910 eth = (__u8 *) skb_push(skb, 14);
ca6549af
SW		 2911 mpls = (__be32 *)skb_put(skb, pkt_dev->nr_labels*sizeof(__u32));
2912 if (pkt_dev->nr_labels)
2913 mpls_push(mpls, pkt_dev);
34954ddc
FF		 2914
2915 if (pkt_dev->vlan_id != 0xffff) {
e71a4783 2916 if (pkt_dev->svlan_id != 0xffff) {
34954ddc 2917 svlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2918 *svlan_tci = build_tci(pkt_dev->svlan_id,
2919 pkt_dev->svlan_cfi,
2920 pkt_dev->svlan_p);
34954ddc 2921 svlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2922 *svlan_encapsulated_proto = htons(ETH_P_8021Q);
34954ddc
FF		 2923 }
2924 vlan_tci = (__be16 *)skb_put(skb, sizeof(__be16));
0f37c605
AV		 2925 *vlan_tci = build_tci(pkt_dev->vlan_id,
2926 pkt_dev->vlan_cfi,
2927 pkt_dev->vlan_p);
34954ddc 2928 vlan_encapsulated_proto = (__be16 *)skb_put(skb, sizeof(__be16));
d5f1ce9a 2929 *vlan_encapsulated_proto = htons(ETH_P_IPV6);
34954ddc
FF		 2930 }
2931
525cebed
TG		 2932 skb_set_mac_header(skb, 0);
2933 skb_set_network_header(skb, skb->len);
2934 iph = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
2935
2936 skb_set_transport_header(skb, skb->len);
2937 udph = (struct udphdr *) skb_put(skb, sizeof(struct udphdr));
fd2ea0a7 2938 skb_set_queue_mapping(skb, queue_map);
9e50e3ac 2939 skb->priority = pkt_dev->skb_priority;
1da177e4 2940
1da177e4 2941 memcpy(eth, pkt_dev->hh, 12);
63adc6fb 2942 *(__be16 *) &eth[12] = protocol;
64053bee 2943
ca6549af
SW		 2944 /* Eth + IPh + UDPh + mpls */
2945 datalen = pkt_dev->cur_pkt_size - 14 -
2946 sizeof(struct ipv6hdr) - sizeof(struct udphdr) -
16dab72f 2947 pkt_dev->pkt_overhead;
1da177e4 2948
5aa8b572 2949 if (datalen < 0 || datalen < sizeof(struct pktgen_hdr)) {
1da177e4 2950 datalen = sizeof(struct pktgen_hdr);
e87cc472 2951 net_info_ratelimited("increased datalen to %d\n", datalen);
1da177e4
LT		 2952 }
2953
c26bf4a5 2954 udplen = datalen + sizeof(struct udphdr);
1da177e4
LT		 2955 udph->source = htons(pkt_dev->cur_udp_src);
2956 udph->dest = htons(pkt_dev->cur_udp_dst);
c26bf4a5
TG		 2957 udph->len = htons(udplen);
2958 udph->check = 0;
1da177e4 2959
d5f1ce9a 2960 *(__be32 *) iph = htonl(0x60000000); /* Version + flow */
1da177e4 2961
1ca7768c
FF		 2962 if (pkt_dev->traffic_class) {
2963 /* Version + traffic class + flow (0) */
252e3346 2964 *(__be32 *)iph |= htonl(0x60000000 | (pkt_dev->traffic_class << 20));
1ca7768c
FF		 2965 }
2966
1da177e4
LT		 2967 iph->hop_limit = 32;
2968
c26bf4a5 2969 iph->payload_len = htons(udplen);
1da177e4
LT		 2970 iph->nexthdr = IPPROTO_UDP;
2971
4e3fd7a0
AD		 2972 iph->daddr = pkt_dev->cur_in6_daddr;
2973 iph->saddr = pkt_dev->cur_in6_saddr;
1da177e4 2974
ca6549af 2975 skb->protocol = protocol;
1da177e4
LT		 2976 skb->dev = odev;
2977 skb->pkt_type = PACKET_HOST;
2978
7744b5f3
SD		 2979 pktgen_finalize_skb(pkt_dev, skb, datalen);
2980
c26bf4a5
TG		 2981 if (!(pkt_dev->flags & F_UDPCSUM)) {
2982 skb->ip_summed = CHECKSUM_NONE;
2983 } else if (odev->features & NETIF_F_V6_CSUM) {
2984 skb->ip_summed = CHECKSUM_PARTIAL;
2985 skb->csum_start = skb_transport_header(skb) - skb->head;
2986 skb->csum_offset = offsetof(struct udphdr, check);
2987 udph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, 0);
2988 } else {
7744b5f3 2989 __wsum csum = skb_checksum(skb, skb_transport_offset(skb), udplen, 0);
c26bf4a5
TG		 2990
2991 /* add protocol-dependent pseudo-header */
2992 udph->check = csum_ipv6_magic(&iph->saddr, &iph->daddr, udplen, IPPROTO_UDP, csum);
2993
2994 if (udph->check == 0)
2995 udph->check = CSUM_MANGLED_0;
2996 }
2997
1da177e4
LT		 2998 return skb;
2999}
3000
475ac1e4
SH		 3001static struct sk_buff *fill_packet(struct net_device *odev,
3002 struct pktgen_dev *pkt_dev)
1da177e4 3003{
222f1806 3004 if (pkt_dev->flags & F_IPV6)
1da177e4
LT		 3005 return fill_packet_ipv6(odev, pkt_dev);
3006 else
3007 return fill_packet_ipv4(odev, pkt_dev);
3008}
3009
222f1806 3010static void pktgen_clear_counters(struct pktgen_dev *pkt_dev)
1da177e4 3011{
222f1806
LC		 3012 pkt_dev->seq_num = 1;
3013 pkt_dev->idle_acc = 0;
1da177e4 3014 pkt_dev->sofar = 0;
222f1806
LC		 3015 pkt_dev->tx_bytes = 0;
3016 pkt_dev->errors = 0;
1da177e4
LT		 3017}
3018
3019/* Set up structure for sending pkts, clear counters */
3020
3021static void pktgen_run(struct pktgen_thread *t)
3022{
c26a8016 3023 struct pktgen_dev *pkt_dev;
1da177e4
LT		 3024 int started = 0;
3025
f9467eae 3026 func_enter();
1da177e4 3027
8788370a
JDB		 3028 rcu_read_lock();
3029 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
1da177e4
LT		 3030
3031 /*
3032 * setup odev and create initial packet.
3033 */
3034 pktgen_setup_inject(pkt_dev);
3035
222f1806 3036 if (pkt_dev->odev) {
1da177e4 3037 pktgen_clear_counters(pkt_dev);
1da177e4 3038 pkt_dev->skb = NULL;
398f382c 3039 pkt_dev->started_at = pkt_dev->next_tx = ktime_get();
fd29cf72 3040
16dab72f 3041 set_pkt_overhead(pkt_dev);
222f1806 3042
1da177e4 3043 strcpy(pkt_dev->result, "Starting");
8788370a 3044 pkt_dev->running = 1; /* Cranke yeself! */
1da177e4 3045 started++;
222f1806 3046 } else
1da177e4
LT		 3047 strcpy(pkt_dev->result, "Error starting");
3048 }
8788370a 3049 rcu_read_unlock();
222f1806
LC		 3050 if (started)
3051 t->control &= ~(T_STOP);
1da177e4
LT		 3052}
3053
4e58a027 3054static void pktgen_stop_all_threads_ifs(struct pktgen_net *pn)
1da177e4 3055{
cdcdbe0b 3056 struct pktgen_thread *t;
1da177e4 3057
f9467eae 3058 func_enter();
1da177e4 3059
6146e6a4 3060 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3061
4e58a027 3062 list_for_each_entry(t, &pn->pktgen_threads, th_list)
95ed63f7 3063 t->control |= T_STOP;
cdcdbe0b 3064
6146e6a4 3065 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3066}
3067
648fda74 3068static int thread_is_running(const struct pktgen_thread *t)
1da177e4 3069{
648fda74 3070 const struct pktgen_dev *pkt_dev;
1da177e4 3071
8788370a
JDB		 3072 rcu_read_lock();
3073 list_for_each_entry_rcu(pkt_dev, &t->if_list, list)
3074 if (pkt_dev->running) {
3075 rcu_read_unlock();
648fda74 3076 return 1;
8788370a
JDB		 3077 }
3078 rcu_read_unlock();
648fda74 3079 return 0;
1da177e4
LT		 3080}
3081
222f1806 3082static int pktgen_wait_thread_run(struct pktgen_thread *t)
1da177e4 3083{
222f1806 3084 while (thread_is_running(t)) {
1da177e4 3085
222f1806 3086 msleep_interruptible(100);
1da177e4 3087
222f1806
LC		 3088 if (signal_pending(current))
3089 goto signal;
222f1806 3090 }
222f1806
LC		 3091 return 1;
3092signal:
3093 return 0;
1da177e4
LT		 3094}
3095
4e58a027 3096static int pktgen_wait_all_threads_run(struct pktgen_net *pn)
1da177e4 3097{
cdcdbe0b 3098 struct pktgen_thread *t;
1da177e4 3099 int sig = 1;
222f1806 3100
6146e6a4 3101 mutex_lock(&pktgen_thread_lock);
cdcdbe0b 3102
4e58a027 3103 list_for_each_entry(t, &pn->pktgen_threads, th_list) {
1da177e4 3104 sig = pktgen_wait_thread_run(t);
222f1806
LC		 3105 if (sig == 0)
3106 break;
1da177e4 3107 }
cdcdbe0b
LC		 3108
3109 if (sig == 0)
4e58a027 3110 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3111 t->control |= (T_STOP);
cdcdbe0b 3112
6146e6a4 3113 mutex_unlock(&pktgen_thread_lock);
1da177e4
LT		 3114 return sig;
3115}
3116
4e58a027 3117static void pktgen_run_all_threads(struct pktgen_net *pn)
1da177e4 3118{
cdcdbe0b 3119 struct pktgen_thread *t;
1da177e4 3120
f9467eae 3121 func_enter();
1da177e4 3122
6146e6a4 3123 mutex_lock(&pktgen_thread_lock);
1da177e4 3124
4e58a027 3125 list_for_each_entry(t, &pn->pktgen_threads, th_list)
1da177e4 3126 t->control |= (T_RUN);
cdcdbe0b 3127
6146e6a4 3128 mutex_unlock(&pktgen_thread_lock);
1da177e4 3129
63adc6fb
SH		 3130 /* Propagate thread->control */
3131 schedule_timeout_interruptible(msecs_to_jiffies(125));
222f1806 3132
4e58a027 3133 pktgen_wait_all_threads_run(pn);
1da177e4
LT		 3134}
3135
4e58a027 3136static void pktgen_reset_all_threads(struct pktgen_net *pn)
eb37b41c
JB		 3137{
3138 struct pktgen_thread *t;
3139
f9467eae 3140 func_enter();
eb37b41c
JB		 3141
3142 mutex_lock(&pktgen_thread_lock);
3143
4e58a027 3144 list_for_each_entry(t, &pn->pktgen_threads, th_list)
eb37b41c
JB		 3145 t->control |= (T_REMDEVALL);
3146
3147 mutex_unlock(&pktgen_thread_lock);
3148
63adc6fb
SH		 3149 /* Propagate thread->control */
3150 schedule_timeout_interruptible(msecs_to_jiffies(125));
eb37b41c 3151
4e58a027 3152 pktgen_wait_all_threads_run(pn);
eb37b41c
JB		 3153}
3154
1da177e4
LT		 3155static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
3156{
fd29cf72 3157 __u64 bps, mbps, pps;
222f1806 3158 char *p = pkt_dev->result;
fd29cf72
SH		 3159 ktime_t elapsed = ktime_sub(pkt_dev->stopped_at,
3160 pkt_dev->started_at);
3161 ktime_t idle = ns_to_ktime(pkt_dev->idle_acc);
3162
03a14ab1 3163 p += sprintf(p, "OK: %llu(c%llu+d%llu) usec, %llu (%dbyte,%dfrags)\n",
fd29cf72
SH		 3164 (unsigned long long)ktime_to_us(elapsed),
3165 (unsigned long long)ktime_to_us(ktime_sub(elapsed, idle)),
3166 (unsigned long long)ktime_to_us(idle),
222f1806
LC		 3167 (unsigned long long)pkt_dev->sofar,
3168 pkt_dev->cur_pkt_size, nr_frags);
3169
fd29cf72
SH		 3170 pps = div64_u64(pkt_dev->sofar * NSEC_PER_SEC,
3171 ktime_to_ns(elapsed));
222f1806
LC		 3172
3173 bps = pps * 8 * pkt_dev->cur_pkt_size;
3174
3175 mbps = bps;
3176 do_div(mbps, 1000000);
3177 p += sprintf(p, " %llupps %lluMb/sec (%llubps) errors: %llu",
3178 (unsigned long long)pps,
3179 (unsigned long long)mbps,
3180 (unsigned long long)bps,
3181 (unsigned long long)pkt_dev->errors);
1da177e4 3182}
1da177e4
LT		 3183
3184/* Set stopped-at timer, remove from running list, do counters & statistics */
222f1806 3185static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
1da177e4 3186{
222f1806 3187 int nr_frags = pkt_dev->skb ? skb_shinfo(pkt_dev->skb)->nr_frags : -1;
95ed63f7 3188
222f1806 3189 if (!pkt_dev->running) {
294a0b7f
JP		 3190 pr_warn("interface: %s is already stopped\n",
3191 pkt_dev->odevname);
222f1806
LC		 3192 return -EINVAL;
3193 }
1da177e4 3194
8788370a 3195 pkt_dev->running = 0;
3bda06a3
SH		 3196 kfree_skb(pkt_dev->skb);
3197 pkt_dev->skb = NULL;
398f382c 3198 pkt_dev->stopped_at = ktime_get();
1da177e4 3199
95ed63f7 3200 show_results(pkt_dev, nr_frags);
1da177e4 3201
222f1806 3202 return 0;
1da177e4
LT		 3203}
3204
222f1806 3205static struct pktgen_dev *next_to_run(struct pktgen_thread *t)
1da177e4 3206{
c26a8016 3207 struct pktgen_dev *pkt_dev, *best = NULL;
222f1806 3208
8788370a
JDB		 3209 rcu_read_lock();
3210 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3211 if (!pkt_dev->running)
222f1806
LC		 3212 continue;
3213 if (best == NULL)
c26a8016 3214 best = pkt_dev;
398f382c 3215 else if (ktime_compare(pkt_dev->next_tx, best->next_tx) < 0)
c26a8016 3216 best = pkt_dev;
1da177e4 3217 }
8788370a
JDB		 3218 rcu_read_unlock();
3219
222f1806 3220 return best;
1da177e4
LT		 3221}
3222
222f1806
LC		 3223static void pktgen_stop(struct pktgen_thread *t)
3224{
c26a8016 3225 struct pktgen_dev *pkt_dev;
1da177e4 3226
f9467eae 3227 func_enter();
1da177e4 3228
8788370a 3229 rcu_read_lock();
1da177e4 3230
8788370a 3231 list_for_each_entry_rcu(pkt_dev, &t->if_list, list) {
c26a8016 3232 pktgen_stop_device(pkt_dev);
95ed63f7 3233 }
1da177e4 3234
8788370a 3235 rcu_read_unlock();
1da177e4
LT		 3236}
3237
95ed63f7
AK		 3238/*
3239 * one of our devices needs to be removed - find it
3240 * and remove it
3241 */
3242static void pktgen_rem_one_if(struct pktgen_thread *t)
3243{
c26a8016
LC		 3244 struct list_head *q, *n;
3245 struct pktgen_dev *cur;
95ed63f7 3246
f9467eae 3247 func_enter();
95ed63f7 3248
c26a8016
LC		 3249 list_for_each_safe(q, n, &t->if_list) {
3250 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3251
222f1806
LC		 3252 if (!cur->removal_mark)
3253 continue;
95ed63f7 3254
86dc1ad2 3255 kfree_skb(cur->skb);
95ed63f7
AK		 3256 cur->skb = NULL;
3257
3258 pktgen_remove_device(t, cur);
3259
3260 break;
3261 }
95ed63f7
AK		 3262}
3263
222f1806 3264static void pktgen_rem_all_ifs(struct pktgen_thread *t)
1da177e4 3265{
c26a8016
LC		 3266 struct list_head *q, *n;
3267 struct pktgen_dev *cur;
222f1806 3268
f9467eae
JP		 3269 func_enter();
3270
222f1806 3271 /* Remove all devices, free mem */
95ed63f7 3272
c26a8016
LC		 3273 list_for_each_safe(q, n, &t->if_list) {
3274 cur = list_entry(q, struct pktgen_dev, list);
95ed63f7 3275
86dc1ad2 3276 kfree_skb(cur->skb);
95ed63f7
AK		 3277 cur->skb = NULL;
3278
1da177e4
LT		 3279 pktgen_remove_device(t, cur);
3280 }
1da177e4
LT		 3281}
3282
222f1806 3283static void pktgen_rem_thread(struct pktgen_thread *t)
1da177e4 3284{
222f1806 3285 /* Remove from the thread list */
4e58a027 3286 remove_proc_entry(t->tsk->comm, t->net->proc_dir);
1da177e4
LT		 3287}
3288
ef87979c 3289static void pktgen_resched(struct pktgen_dev *pkt_dev)
3791decb 3290{
398f382c 3291 ktime_t idle_start = ktime_get();
ef87979c 3292 schedule();
398f382c 3293 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
ef87979c 3294}
3791decb 3295
ef87979c
SH		 3296static void pktgen_wait_for_skb(struct pktgen_dev *pkt_dev)
3297{
398f382c 3298 ktime_t idle_start = ktime_get();
3791decb 3299
ef87979c
SH		 3300 while (atomic_read(&(pkt_dev->skb->users)) != 1) {
3301 if (signal_pending(current))
3302 break;
3303
3304 if (need_resched())
3305 pktgen_resched(pkt_dev);
3306 else
3307 cpu_relax();
3308 }
398f382c 3309 pkt_dev->idle_acc += ktime_to_ns(ktime_sub(ktime_get(), idle_start));
3791decb
SH		 3310}
3311
475ac1e4 3312static void pktgen_xmit(struct pktgen_dev *pkt_dev)
1da177e4 3313{
38b2cf29 3314 unsigned int burst = ACCESS_ONCE(pkt_dev->burst);
00829823 3315 struct net_device *odev = pkt_dev->odev;
fd2ea0a7 3316 struct netdev_queue *txq;
1da177e4
LT		 3317 int ret;
3318
ef87979c
SH		 3319 /* If device is offline, then don't send */
3320 if (unlikely(!netif_running(odev) || !netif_carrier_ok(odev))) {
3321 pktgen_stop_device(pkt_dev);
3322 return;
fd2ea0a7
DM		 3323 }
3324
ef87979c
SH		 3325 /* This is max DELAY, this has special meaning of
3326 * "never transmit"
3327 */
3328 if (unlikely(pkt_dev->delay == ULLONG_MAX)) {
398f382c 3329 pkt_dev->next_tx = ktime_add_ns(ktime_get(), ULONG_MAX);
3791decb 3330 return;
1da177e4 3331 }
222f1806 3332
ef87979c 3333 /* If no skb or clone count exhausted then get new one */
7d7bb1cf
SH		 3334 if (!pkt_dev->skb || (pkt_dev->last_ok &&
3335 ++pkt_dev->clone_count >= pkt_dev->clone_skb)) {
3336 /* build a new pkt */
3337 kfree_skb(pkt_dev->skb);
3338
3339 pkt_dev->skb = fill_packet(odev, pkt_dev);
3340 if (pkt_dev->skb == NULL) {
f9467eae 3341 pr_err("ERROR: couldn't allocate skb in fill_packet\n");
7d7bb1cf
SH		 3342 schedule();
3343 pkt_dev->clone_count--; /* back out increment, OOM */
3344 return;
1da177e4 3345 }
baac8564 3346 pkt_dev->last_pkt_size = pkt_dev->skb->len;
7d7bb1cf
SH		 3347 pkt_dev->allocated_skbs++;
3348 pkt_dev->clone_count = 0; /* reset counter */
1da177e4 3349 }
95ed63f7 3350
ef87979c
SH		 3351 if (pkt_dev->delay && pkt_dev->last_ok)
3352 spin(pkt_dev, pkt_dev->next_tx);
3353
10c51b56 3354 txq = skb_get_tx_queue(odev, pkt_dev->skb);
fd2ea0a7 3355
0f2eea4b
DB		 3356 local_bh_disable();
3357
3358 HARD_TX_LOCK(odev, txq, smp_processor_id());
5b8db2f5 3359
6f25cd47 3360 if (unlikely(netif_xmit_frozen_or_drv_stopped(txq))) {
ef87979c 3361 ret = NETDEV_TX_BUSY;
0835acfe
ED		 3362 pkt_dev->last_ok = 0;
3363 goto unlock;
3364 }
38b2cf29
AS		 3365 atomic_add(burst, &pkt_dev->skb->users);
3366
3367xmit_more:
3368 ret = netdev_start_xmit(pkt_dev->skb, odev, txq, --burst > 0);
ef87979c
SH		 3369
3370 switch (ret) {
3371 case NETDEV_TX_OK:
ef87979c
SH		 3372 pkt_dev->last_ok = 1;
3373 pkt_dev->sofar++;
3374 pkt_dev->seq_num++;
baac8564 3375 pkt_dev->tx_bytes += pkt_dev->last_pkt_size;
38b2cf29
AS		 3376 if (burst > 0 && !netif_xmit_frozen_or_drv_stopped(txq))
3377 goto xmit_more;
ef87979c 3378 break;
f466dba1
JF		 3379 case NET_XMIT_DROP:
3380 case NET_XMIT_CN:
3381 case NET_XMIT_POLICED:
3382 /* skb has been consumed */
3383 pkt_dev->errors++;
3384 break;
ef87979c 3385 default: /* Drivers are not supposed to return other values! */
e87cc472
JP		 3386 net_info_ratelimited("%s xmit error: %d\n",
3387 pkt_dev->odevname, ret);
ef87979c
SH		 3388 pkt_dev->errors++;
3389 /* fallthru */
3390 case NETDEV_TX_LOCKED:
3391 case NETDEV_TX_BUSY:
3392 /* Retry it next time */
3393 atomic_dec(&(pkt_dev->skb->users));
3394 pkt_dev->last_ok = 0;
222f1806 3395 }
38b2cf29
AS		 3396 if (unlikely(burst))
3397 atomic_sub(burst, &pkt_dev->skb->users);
0835acfe 3398unlock:
0f2eea4b
DB		 3399 HARD_TX_UNLOCK(odev, txq);
3400
3401 local_bh_enable();
222f1806 3402
1da177e4
LT		 3403 /* If pkt_dev->count is zero, then run forever */
3404 if ((pkt_dev->count != 0) && (pkt_dev->sofar >= pkt_dev->count)) {
ef87979c 3405 pktgen_wait_for_skb(pkt_dev);
222f1806 3406
1da177e4
LT		 3407 /* Done with this */
3408 pktgen_stop_device(pkt_dev);
222f1806 3409 }
222f1806 3410}
1da177e4 3411
4ec93edb 3412/*
1da177e4
LT		 3413 * Main loop of the thread goes here
3414 */
3415
ee74baa7 3416static int pktgen_thread_worker(void *arg)
1da177e4
LT		 3417{
3418 DEFINE_WAIT(wait);
ee74baa7 3419 struct pktgen_thread *t = arg;
222f1806 3420 struct pktgen_dev *pkt_dev = NULL;
1da177e4 3421 int cpu = t->cpu;
1da177e4 3422
ee74baa7 3423 BUG_ON(smp_processor_id() != cpu);
1da177e4
LT		 3424
3425 init_waitqueue_head(&t->queue);
d3ede327 3426 complete(&t->start_done);
1da177e4 3427
f9467eae 3428 pr_debug("starting pktgen/%d: pid=%d\n", cpu, task_pid_nr(current));
1da177e4 3429
83144186
RW		 3430 set_freezable();
3431
baac167b
JDB		 3432 __set_current_state(TASK_RUNNING);
3433
ee74baa7
DM		 3434 while (!kthread_should_stop()) {
3435 pkt_dev = next_to_run(t);
1da177e4 3436
ef87979c 3437 if (unlikely(!pkt_dev && t->control == 0)) {
4e58a027 3438 if (t->net->pktgen_exiting)
551eaff1 3439 break;
ef87979c
SH		 3440 wait_event_interruptible_timeout(t->queue,
3441 t->control != 0,
3442 HZ/10);
1b3f720b 3443 try_to_freeze();
ef87979c 3444 continue;
ee74baa7 3445 }
1da177e4 3446
ef87979c 3447 if (likely(pkt_dev)) {
1da177e4
LT		 3448 pktgen_xmit(pkt_dev);
3449
ef87979c
SH		 3450 if (need_resched())
3451 pktgen_resched(pkt_dev);
3452 else
3453 cpu_relax();
3454 }
3455
222f1806 3456 if (t->control & T_STOP) {
1da177e4
LT		 3457 pktgen_stop(t);
3458 t->control &= ~(T_STOP);
3459 }
3460
222f1806 3461 if (t->control & T_RUN) {
1da177e4
LT		 3462 pktgen_run(t);
3463 t->control &= ~(T_RUN);
3464 }
3465
222f1806 3466 if (t->control & T_REMDEVALL) {
1da177e4 3467 pktgen_rem_all_ifs(t);
95ed63f7
AK		 3468 t->control &= ~(T_REMDEVALL);
3469 }
3470
222f1806 3471 if (t->control & T_REMDEV) {
95ed63f7 3472 pktgen_rem_one_if(t);
1da177e4
LT		 3473 t->control &= ~(T_REMDEV);
3474 }
3475
09fe3ef4 3476 try_to_freeze();
222f1806 3477 }
baac167b 3478 set_current_state(TASK_INTERRUPTIBLE);
1da177e4 3479
f9467eae 3480 pr_debug("%s stopping all device\n", t->tsk->comm);
222f1806 3481 pktgen_stop(t);
1da177e4 3482
f9467eae 3483 pr_debug("%s removing all device\n", t->tsk->comm);
222f1806 3484 pktgen_rem_all_ifs(t);
1da177e4 3485
f9467eae 3486 pr_debug("%s removing thread\n", t->tsk->comm);
222f1806 3487 pktgen_rem_thread(t);
cdcdbe0b 3488
551eaff1
ED		 3489 /* Wait for kthread_stop */
3490 while (!kthread_should_stop()) {
3491 set_current_state(TASK_INTERRUPTIBLE);
3492 schedule();
3493 }
3494 __set_current_state(TASK_RUNNING);
3495
ee74baa7 3496 return 0;
1da177e4
LT		 3497}
3498
222f1806 3499static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
3e984840 3500 const char *ifname, bool exact)
1da177e4 3501{
c26a8016 3502 struct pktgen_dev *p, *pkt_dev = NULL;
3e984840 3503 size_t len = strlen(ifname);
222f1806 3504
8788370a
JDB		 3505 rcu_read_lock();
3506 list_for_each_entry_rcu(p, &t->if_list, list)
3e984840
ED		 3507 if (strncmp(p->odevname, ifname, len) == 0) {
3508 if (p->odevname[len]) {
3509 if (exact || p->odevname[len] != '@')
3510 continue;
3511 }
c26a8016 3512 pkt_dev = p;
222f1806
LC		 3513 break;
3514 }
222f1806 3515
8788370a 3516 rcu_read_unlock();
f9467eae 3517 pr_debug("find_dev(%s) returning %p\n", ifname, pkt_dev);
222f1806 3518 return pkt_dev;
1da177e4
LT		 3519}
3520
4ec93edb
YH		 3521/*
3522 * Adds a dev at front of if_list.
1da177e4
LT		 3523 */
3524
222f1806
LC		 3525static int add_dev_to_thread(struct pktgen_thread *t,
3526 struct pktgen_dev *pkt_dev)
1da177e4
LT		 3527{
3528 int rv = 0;
222f1806 3529
8788370a
JDB		 3530 /* This function cannot be called concurrently, as its called
3531 * under pktgen_thread_lock mutex, but it can run from
3532 * userspace on another CPU than the kthread. The if_lock()
3533 * is used here to sync with concurrent instances of
3534 * _rem_dev_from_if_list() invoked via kthread, which is also
3535 * updating the if_list */
222f1806
LC		 3536 if_lock(t);
3537
3538 if (pkt_dev->pg_thread) {
f9467eae 3539 pr_err("ERROR: already assigned to a thread\n");
222f1806
LC		 3540 rv = -EBUSY;
3541 goto out;
3542 }
c26a8016 3543
1da177e4 3544 pkt_dev->running = 0;
8788370a
JDB		 3545 pkt_dev->pg_thread = t;
3546 list_add_rcu(&pkt_dev->list, &t->if_list);
1da177e4 3547
222f1806
LC		 3548out:
3549 if_unlock(t);
3550 return rv;
1da177e4
LT		 3551}
3552
3553/* Called under thread lock */
3554
222f1806 3555static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
1da177e4 3556{
222f1806 3557 struct pktgen_dev *pkt_dev;
39df232f 3558 int err;
3291b9db 3559 int node = cpu_to_node(t->cpu);
222f1806 3560
1da177e4
LT		 3561 /* We don't allow a device to be on several threads */
3562
4e58a027 3563 pkt_dev = __pktgen_NN_threads(t->net, ifname, FIND);
d50a6b56 3564 if (pkt_dev) {
f9467eae 3565 pr_err("ERROR: interface already used\n");
222f1806
LC		 3566 return -EBUSY;
3567 }
d50a6b56 3568
3291b9db 3569 pkt_dev = kzalloc_node(sizeof(struct pktgen_dev), GFP_KERNEL, node);
d50a6b56
SH		 3570 if (!pkt_dev)
3571 return -ENOMEM;
3572
593f63b0 3573 strcpy(pkt_dev->odevname, ifname);
68d5ac2e 3574 pkt_dev->flows = vzalloc_node(MAX_CFLOWS * sizeof(struct flow_state),
3291b9db 3575 node);
d50a6b56
SH		 3576 if (pkt_dev->flows == NULL) {
3577 kfree(pkt_dev);
3578 return -ENOMEM;
3579 }
d50a6b56 3580
95ed63f7 3581 pkt_dev->removal_mark = 0;
d50a6b56 3582 pkt_dev->nfrags = 0;
fd29cf72 3583 pkt_dev->delay = pg_delay_d;
d50a6b56
SH		 3584 pkt_dev->count = pg_count_d;
3585 pkt_dev->sofar = 0;
222f1806 3586 pkt_dev->udp_src_min = 9; /* sink port */
d50a6b56
SH		 3587 pkt_dev->udp_src_max = 9;
3588 pkt_dev->udp_dst_min = 9;
3589 pkt_dev->udp_dst_max = 9;
34954ddc
FF		 3590 pkt_dev->vlan_p = 0;
3591 pkt_dev->vlan_cfi = 0;
3592 pkt_dev->vlan_id = 0xffff;
3593 pkt_dev->svlan_p = 0;
3594 pkt_dev->svlan_cfi = 0;
3595 pkt_dev->svlan_id = 0xffff;
38b2cf29 3596 pkt_dev->burst = 1;
e99b99b4 3597 pkt_dev->node = -1;
34954ddc 3598
4e58a027 3599 err = pktgen_setup_dev(t->net, pkt_dev, ifname);
39df232f
SH		 3600 if (err)
3601 goto out1;
d8873315
NH		 3602 if (pkt_dev->odev->priv_flags & IFF_TX_SKB_SHARING)
3603 pkt_dev->clone_skb = pg_clone_skb_d;
d50a6b56 3604
4e58a027 3605 pkt_dev->entry = proc_create_data(ifname, 0600, t->net->proc_dir,
5efdccbc 3606 &pktgen_if_fops, pkt_dev);
39df232f 3607 if (!pkt_dev->entry) {
f9467eae 3608 pr_err("cannot create %s/%s procfs entry\n",
d50a6b56 3609 PG_PROC_DIR, ifname);
39df232f
SH		 3610 err = -EINVAL;
3611 goto out2;
d50a6b56 3612 }
a553e4a6
JHS		 3613#ifdef CONFIG_XFRM
3614 pkt_dev->ipsmode = XFRM_MODE_TRANSPORT;
3615 pkt_dev->ipsproto = IPPROTO_ESP;
cf93d47e
FD		 3616
3617 /* xfrm tunnel mode needs additional dst to extract outter
3618 * ip header protocol/ttl/id field, here creat a phony one.
3619 * instead of looking for a valid rt, which definitely hurting
3620 * performance under such circumstance.
3621 */
3622 pkt_dev->dstops.family = AF_INET;
3623 pkt_dev->dst.dev = pkt_dev->odev;
3624 dst_init_metrics(&pkt_dev->dst, pktgen_dst_metrics, false);
3625 pkt_dev->dst.child = &pkt_dev->dst;
3626 pkt_dev->dst.ops = &pkt_dev->dstops;
a553e4a6 3627#endif
d50a6b56
SH		 3628
3629 return add_dev_to_thread(t, pkt_dev);
39df232f
SH		 3630out2:
3631 dev_put(pkt_dev->odev);
3632out1:
a553e4a6
JHS		 3633#ifdef CONFIG_XFRM
3634 free_SAs(pkt_dev);
3635#endif
1d0ebfe7 3636 vfree(pkt_dev->flows);
39df232f
SH		 3637 kfree(pkt_dev);
3638 return err;
1da177e4
LT		 3639}
3640
4e58a027 3641static int __net_init pktgen_create_thread(int cpu, struct pktgen_net *pn)
1da177e4 3642{
cdcdbe0b 3643 struct pktgen_thread *t;
d50a6b56 3644 struct proc_dir_entry *pe;
ee74baa7 3645 struct task_struct *p;
222f1806 3646
3291b9db
ED		 3647 t = kzalloc_node(sizeof(struct pktgen_thread), GFP_KERNEL,
3648 cpu_to_node(cpu));
222f1806 3649 if (!t) {
f9467eae 3650 pr_err("ERROR: out of memory, can't create new thread\n");
222f1806
LC		 3651 return -ENOMEM;
3652 }
3653
222f1806 3654 spin_lock_init(&t->if_lock);
1da177e4 3655 t->cpu = cpu;
222f1806 3656
ee74baa7
DM		 3657 INIT_LIST_HEAD(&t->if_list);
3658
4e58a027 3659 list_add_tail(&t->th_list, &pn->pktgen_threads);
d3ede327 3660 init_completion(&t->start_done);
ee74baa7 3661
94dcf29a
ED		 3662 p = kthread_create_on_node(pktgen_thread_worker,
3663 t,
3664 cpu_to_node(cpu),
3665 "kpktgend_%d", cpu);
ee74baa7 3666 if (IS_ERR(p)) {
f9467eae 3667 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
ee74baa7
DM		 3668 list_del(&t->th_list);
3669 kfree(t);
3670 return PTR_ERR(p);
3671 }
3672 kthread_bind(p, cpu);
3673 t->tsk = p;
3674
4e58a027 3675 pe = proc_create_data(t->tsk->comm, 0600, pn->proc_dir,
5efdccbc 3676 &pktgen_thread_fops, t);
222f1806 3677 if (!pe) {
f9467eae 3678 pr_err("cannot create %s/%s procfs entry\n",
ee74baa7
DM		 3679 PG_PROC_DIR, t->tsk->comm);
3680 kthread_stop(p);
3681 list_del(&t->th_list);
222f1806
LC		 3682 kfree(t);
3683 return -EINVAL;
3684 }
d50a6b56 3685
4e58a027 3686 t->net = pn;
ee74baa7 3687 wake_up_process(p);
d3ede327 3688 wait_for_completion(&t->start_done);
1da177e4
LT		 3689
3690 return 0;
3691}
3692
4ec93edb
YH		 3693/*
3694 * Removes a device from the thread if_list.
1da177e4 3695 */
222f1806
LC		 3696static void _rem_dev_from_if_list(struct pktgen_thread *t,
3697 struct pktgen_dev *pkt_dev)
1da177e4 3698{
c26a8016
LC		 3699 struct list_head *q, *n;
3700 struct pktgen_dev *p;
1da177e4 3701
8788370a 3702 if_lock(t);
c26a8016
LC		 3703 list_for_each_safe(q, n, &t->if_list) {
3704 p = list_entry(q, struct pktgen_dev, list);
3705 if (p == pkt_dev)
8788370a 3706 list_del_rcu(&p->list);
1da177e4 3707 }
8788370a 3708 if_unlock(t);
1da177e4
LT		 3709}
3710
222f1806
LC		 3711static int pktgen_remove_device(struct pktgen_thread *t,
3712 struct pktgen_dev *pkt_dev)
1da177e4 3713{
f9467eae 3714 pr_debug("remove_device pkt_dev=%p\n", pkt_dev);
1da177e4 3715
222f1806 3716 if (pkt_dev->running) {
294a0b7f 3717 pr_warn("WARNING: trying to remove a running interface, stopping it now\n");
222f1806
LC		 3718 pktgen_stop_device(pkt_dev);
3719 }
3720
3721 /* Dis-associate from the interface */
1da177e4
LT		 3722
3723 if (pkt_dev->odev) {
3724 dev_put(pkt_dev->odev);
222f1806
LC		 3725 pkt_dev->odev = NULL;
3726 }
3727
8788370a
JDB		 3728 /* Remove proc before if_list entry, because add_device uses
3729 * list to determine if interface already exist, avoid race
3730 * with proc_create_data() */
ef87c5d6 3731 proc_remove(pkt_dev->entry);
1da177e4 3732
8788370a
JDB		 3733 /* And update the thread if_list */
3734 _rem_dev_from_if_list(t, pkt_dev);
3735
a553e4a6
JHS		 3736#ifdef CONFIG_XFRM
3737 free_SAs(pkt_dev);
3738#endif
1d0ebfe7 3739 vfree(pkt_dev->flows);
26ad7879
ED		 3740 if (pkt_dev->page)
3741 put_page(pkt_dev->page);
8788370a 3742 kfree_rcu(pkt_dev, rcu);
222f1806 3743 return 0;
1da177e4
LT		 3744}
3745
4e58a027 3746static int __net_init pg_net_init(struct net *net)
1da177e4 3747{
4e58a027 3748 struct pktgen_net *pn = net_generic(net, pg_net_id);
d50a6b56 3749 struct proc_dir_entry *pe;
4e58a027
CW		 3750 int cpu, ret = 0;
3751
3752 pn->net = net;
3753 INIT_LIST_HEAD(&pn->pktgen_threads);
3754 pn->pktgen_exiting = false;
3755 pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
3756 if (!pn->proc_dir) {
3757 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
d50a6b56 3758 return -ENODEV;
4e58a027
CW		 3759 }
3760 pe = proc_create(PGCTRL, 0600, pn->proc_dir, &pktgen_fops);
222f1806 3761 if (pe == NULL) {
4e58a027 3762 pr_err("cannot create %s procfs entry\n", PGCTRL);
ce14f894 3763 ret = -EINVAL;
4e58a027 3764 goto remove;
222f1806 3765 }
1da177e4 3766
670c02c2 3767 for_each_online_cpu(cpu) {
8024bb24 3768 int err;
1da177e4 3769
4e58a027 3770 err = pktgen_create_thread(cpu, pn);
8024bb24 3771 if (err)
4e58a027 3772 pr_warn("Cannot create thread for cpu %d (%d)\n",
f9467eae 3773 cpu, err);
222f1806 3774 }
8024bb24 3775
4e58a027
CW		 3776 if (list_empty(&pn->pktgen_threads)) {
3777 pr_err("Initialization failed for all threads\n");
ce14f894 3778 ret = -ENODEV;
4e58a027 3779 goto remove_entry;
8024bb24
LC		 3780 }
3781
222f1806 3782 return 0;
ce14f894 3783
4e58a027
CW		 3784remove_entry:
3785 remove_proc_entry(PGCTRL, pn->proc_dir);
3786remove:
ece31ffd 3787 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
ce14f894 3788 return ret;
1da177e4
LT		 3789}
3790
4e58a027 3791static void __net_exit pg_net_exit(struct net *net)
1da177e4 3792{
4e58a027 3793 struct pktgen_net *pn = net_generic(net, pg_net_id);
cdcdbe0b
LC		 3794 struct pktgen_thread *t;
3795 struct list_head *q, *n;
d4b11335 3796 LIST_HEAD(list);
1da177e4 3797
222f1806 3798 /* Stop all interfaces & threads */
4e58a027 3799 pn->pktgen_exiting = true;
1da177e4 3800
c57b5468 3801 mutex_lock(&pktgen_thread_lock);
4e58a027 3802 list_splice_init(&pn->pktgen_threads, &list);
c57b5468
ED		 3803 mutex_unlock(&pktgen_thread_lock);
3804
3805 list_for_each_safe(q, n, &list) {
cdcdbe0b 3806 t = list_entry(q, struct pktgen_thread, th_list);
c57b5468 3807 list_del(&t->th_list);
ee74baa7
DM		 3808 kthread_stop(t->tsk);
3809 kfree(t);
222f1806 3810 }
1da177e4 3811
4e58a027 3812 remove_proc_entry(PGCTRL, pn->proc_dir);
ece31ffd 3813 remove_proc_entry(PG_PROC_DIR, pn->net->proc_net);
4e58a027
CW		 3814}
3815
3816static struct pernet_operations pg_net_ops = {
3817 .init = pg_net_init,
3818 .exit = pg_net_exit,
3819 .id = &pg_net_id,
3820 .size = sizeof(struct pktgen_net),
3821};
3822
3823static int __init pg_init(void)
3824{
3825 int ret = 0;
1da177e4 3826
4e58a027
CW		 3827 pr_info("%s", version);
3828 ret = register_pernet_subsys(&pg_net_ops);
3829 if (ret)
3830 return ret;
3831 ret = register_netdevice_notifier(&pktgen_notifier_block);
3832 if (ret)
3833 unregister_pernet_subsys(&pg_net_ops);
3834
3835 return ret;
3836}
3837
3838static void __exit pg_cleanup(void)
3839{
3840 unregister_netdevice_notifier(&pktgen_notifier_block);
3841 unregister_pernet_subsys(&pg_net_ops);
8788370a 3842 /* Don't need rcu_barrier() due to use of kfree_rcu() */
1da177e4
LT		 3843}
3844
1da177e4
LT		 3845module_init(pg_init);
3846module_exit(pg_cleanup);
3847
c3d2f52d 3848MODULE_AUTHOR("Robert Olsson <robert.olsson@its.uu.se>");
1da177e4
LT		 3849MODULE_DESCRIPTION("Packet Generator tool");
3850MODULE_LICENSE("GPL");
c3d2f52d 3851MODULE_VERSION(VERSION);
1da177e4 3852module_param(pg_count_d, int, 0);
c3d2f52d 3853MODULE_PARM_DESC(pg_count_d, "Default number of packets to inject");
1da177e4 3854module_param(pg_delay_d, int, 0);
c3d2f52d 3855MODULE_PARM_DESC(pg_delay_d, "Default delay between packets (nanoseconds)");
1da177e4 3856module_param(pg_clone_skb_d, int, 0);
c3d2f52d 3857MODULE_PARM_DESC(pg_clone_skb_d, "Default number of copies of the same packet");
1da177e4 3858module_param(debug, int, 0);
c3d2f52d 3859MODULE_PARM_DESC(debug, "Enable debugging of pktgen module");
Linux kernel - Deliverables
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