Re: [PATCH net-next 7/7] vxlan: use generic function for tunnel IPv4 route lookup

From: kernel test robot
Date: Mon Oct 09 2023 - 06:23:16 EST

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In reply to: Beniamino Galvani: "[PATCH net-next 7/7] vxlan: use generic function for tunnel IPv4 route lookup"
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Hi Beniamino,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url: https://github.com/intel-lab-lkp/linux/commits/Beniamino-Galvani/ipv4-rename-and-move-ip_route_output_tunnel/20231009-162823
base: net-next/main
patch link: https://lore.kernel.org/r/20231009082059.2500217-8-b.galvani%40gmail.com
patch subject: [PATCH net-next 7/7] vxlan: use generic function for tunnel IPv4 route lookup
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231009/202310091850.YNLmLI9a-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231009/202310091850.YNLmLI9a-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310091850.YNLmLI9a-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

drivers/net/vxlan/vxlan_core.c: In function 'vxlan_xmit_one':
>> drivers/net/vxlan/vxlan_core.c:2381:24: warning: variable 'flow_flags' set but not used [-Wunused-but-set-variable]
2381 | __u8 tos, ttl, flow_flags = 0;
| ^~~~~~~~~~

vim +/flow_flags +2381 drivers/net/vxlan/vxlan_core.c

fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2364
6ab271aaad2535 drivers/net/vxlan/vxlan_core.c Ido Schimmel 2023-03-15 2365 void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
6ab271aaad2535 drivers/net/vxlan/vxlan_core.c Ido Schimmel 2023-03-15 2366 __be32 default_vni, struct vxlan_rdst *rdst, bool did_rsc)
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2367 {
d71785ffc7e7ca drivers/net/vxlan.c Paolo Abeni 2016-02-12 2368 struct dst_cache *dst_cache;
3093fbe7ff4bc7 drivers/net/vxlan.c Thomas Graf 2015-07-21 2369 struct ip_tunnel_info *info;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2370 struct ip_tunnel_key *pkey;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2371 struct ip_tunnel_key key;
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2372 struct vxlan_dev *vxlan = netdev_priv(dev);
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2373 const struct iphdr *old_iph = ip_hdr(skb);
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2374 union vxlan_addr *dst;
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2375 union vxlan_addr remote_ip, local_ip;
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2376 struct vxlan_metadata _md;
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2377 struct vxlan_metadata *md = &_md;
4095e0e1328a3c drivers/net/vxlan/vxlan_core.c Nikolay Aleksandrov 2022-03-01 2378 unsigned int pkt_len = skb->len;
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2379 __be16 src_port = 0, dst_port;
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2380 struct dst_entry *ndst = NULL;
7e2fb8bc7ef6c7 drivers/net/vxlan/vxlan_core.c Paul Chaignon 2022-07-25 @2381 __u8 tos, ttl, flow_flags = 0;
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2382 int ifindex;
0e6fbc5b6c6218 drivers/net/vxlan.c Pravin B Shelar 2013-06-17 2383 int err;
dc5321d79697db drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2384 u32 flags = vxlan->cfg.flags;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2385 bool use_cache;
b4ed5cad24c107 drivers/net/vxlan.c Jiri Benc 2016-02-02 2386 bool udp_sum = false;
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2387 bool xnet = !net_eq(vxlan->net, dev_net(vxlan->dev));
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2388 __be32 vni = 0;
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2389 #if IS_ENABLED(CONFIG_IPV6)
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2390 __be32 label;
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2391 #endif
e4f67addf158f9 drivers/net/vxlan.c David Stevens 2012-11-20 2392
61adedf3e3f1d3 drivers/net/vxlan.c Jiri Benc 2015-08-20 2393 info = skb_tunnel_info(skb);
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2394 use_cache = ip_tunnel_dst_cache_usable(skb, info);
3093fbe7ff4bc7 drivers/net/vxlan.c Thomas Graf 2015-07-21 2395
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2396 if (rdst) {
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2397 dst = &rdst->remote_ip;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2398 memset(&key, 0, sizeof(key));
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2399 pkey = &key;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2400
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2401 if (vxlan_addr_any(dst)) {
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2402 if (did_rsc) {
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2403 /* short-circuited back to local bridge */
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2404 vxlan_encap_bypass(skb, vxlan, vxlan,
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2405 default_vni, true);
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2406 return;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2407 }
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2408 goto drop;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2409 }
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2410
0dfbdf4102b930 drivers/net/vxlan.c Thomas Graf 2015-07-21 2411 dst_port = rdst->remote_port ? rdst->remote_port : vxlan->cfg.dst_port;
3ad7a4b141ebd6 drivers/net/vxlan.c Roopa Prabhu 2017-01-31 2412 vni = (rdst->remote_vni) ? : default_vni;
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2413 ifindex = rdst->remote_ifindex;
1158632b5a2dcc drivers/net/vxlan.c Brian Russell 2017-02-24 2414 local_ip = vxlan->cfg.saddr;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2415
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2416 if (dst->sa.sa_family == AF_INET) {
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2417 key.u.ipv4.src = vxlan->cfg.saddr.sin.sin_addr.s_addr;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2418 key.u.ipv4.dst = rdst->remote_ip.sin.sin_addr.s_addr;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2419 } else {
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2420 key.u.ipv6.src = vxlan->cfg.saddr.sin6.sin6_addr;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2421 key.u.ipv6.dst = rdst->remote_ip.sin6.sin6_addr;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2422 }
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2423
d71785ffc7e7ca drivers/net/vxlan.c Paolo Abeni 2016-02-12 2424 dst_cache = &rdst->dst_cache;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2425 md->gbp = skb->mark;
72f6d71e491e6c drivers/net/vxlan.c Hangbin Liu 2018-04-17 2426 if (flags & VXLAN_F_TTL_INHERIT) {
72f6d71e491e6c drivers/net/vxlan.c Hangbin Liu 2018-04-17 2427 ttl = ip_tunnel_get_ttl(old_iph, skb);
72f6d71e491e6c drivers/net/vxlan.c Hangbin Liu 2018-04-17 2428 } else {
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2429 ttl = vxlan->cfg.ttl;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2430 if (!ttl && vxlan_addr_multicast(dst))
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2431 ttl = 1;
72f6d71e491e6c drivers/net/vxlan.c Hangbin Liu 2018-04-17 2432 }
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2433
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2434 tos = vxlan->cfg.tos;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2435 if (tos == 1)
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2436 tos = ip_tunnel_get_dsfield(old_iph, skb);
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2437 if (tos && !info)
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2438 use_cache = false;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2439
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2440 if (dst->sa.sa_family == AF_INET)
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2441 udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM_TX);
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2442 else
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2443 udp_sum = !(flags & VXLAN_F_UDP_ZERO_CSUM6_TX);
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2444 #if IS_ENABLED(CONFIG_IPV6)
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2445 label = vxlan->cfg.label;
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2446 #endif
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2447 } else {
435be28b0789b3 drivers/net/vxlan.c Jakub Kicinski 2020-09-25 2448 if (!info) {
435be28b0789b3 drivers/net/vxlan.c Jakub Kicinski 2020-09-25 2449 WARN_ONCE(1, "%s: Missing encapsulation instructions\n",
435be28b0789b3 drivers/net/vxlan.c Jakub Kicinski 2020-09-25 2450 dev->name);
435be28b0789b3 drivers/net/vxlan.c Jakub Kicinski 2020-09-25 2451 goto drop;
435be28b0789b3 drivers/net/vxlan.c Jakub Kicinski 2020-09-25 2452 }
b1be00a6c39fda drivers/net/vxlan.c Jiri Benc 2015-09-24 2453 remote_ip.sa.sa_family = ip_tunnel_info_af(info);
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2454 if (remote_ip.sa.sa_family == AF_INET) {
c1ea5d672aaff0 drivers/net/vxlan.c Jiri Benc 2015-08-20 2455 remote_ip.sin.sin_addr.s_addr = info->key.u.ipv4.dst;
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2456 local_ip.sin.sin_addr.s_addr = info->key.u.ipv4.src;
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2457 } else {
a725e514dbb444 drivers/net/vxlan.c Jiri Benc 2015-08-20 2458 remote_ip.sin6.sin6_addr = info->key.u.ipv6.dst;
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2459 local_ip.sin6.sin6_addr = info->key.u.ipv6.src;
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2460 }
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2461 dst = &remote_ip;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2462 pkey = &info->key;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2463 dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port;
7e2fb8bc7ef6c7 drivers/net/vxlan/vxlan_core.c Paul Chaignon 2022-07-25 2464 flow_flags = info->key.flow_flags;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2465 vni = tunnel_id_to_key32(info->key.tun_id);
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2466 ifindex = 0;
d71785ffc7e7ca drivers/net/vxlan.c Paolo Abeni 2016-02-12 2467 dst_cache = &info->dst_cache;
eadf52cf185219 drivers/net/vxlan.c Xin Long 2019-10-29 2468 if (info->key.tun_flags & TUNNEL_VXLAN_OPT) {
eadf52cf185219 drivers/net/vxlan.c Xin Long 2019-10-29 2469 if (info->options_len < sizeof(*md))
eadf52cf185219 drivers/net/vxlan.c Xin Long 2019-10-29 2470 goto drop;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2471 md = ip_tunnel_info_opts(info);
eadf52cf185219 drivers/net/vxlan.c Xin Long 2019-10-29 2472 }
7c383fb2254c44 drivers/net/vxlan.c Jiri Benc 2015-08-20 2473 ttl = info->key.ttl;
7c383fb2254c44 drivers/net/vxlan.c Jiri Benc 2015-08-20 2474 tos = info->key.tos;
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2475 #if IS_ENABLED(CONFIG_IPV6)
e7f70af111f086 drivers/net/vxlan.c Daniel Borkmann 2016-03-09 2476 label = info->key.label;
fba55a66e8ecd1 drivers/net/vxlan/vxlan_core.c Roopa Prabhu 2022-03-01 2477 #endif
b4ed5cad24c107 drivers/net/vxlan.c Jiri Benc 2016-02-02 2478 udp_sum = !!(info->key.tun_flags & TUNNEL_CSUM);
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2479 }
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2480 src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->cfg.port_min,
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2481 vxlan->cfg.port_max, true);
ee122c79d4227f drivers/net/vxlan.c Thomas Graf 2015-07-21 2482
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2483 rcu_read_lock();
a725e514dbb444 drivers/net/vxlan.c Jiri Benc 2015-08-20 2484 if (dst->sa.sa_family == AF_INET) {
c6fcc4fc5f8b59 drivers/net/vxlan.c pravin shelar 2016-10-28 2485 struct vxlan_sock *sock4 = rcu_dereference(vxlan->vn4_sock);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2486 struct rtable *rt;
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2487 __be16 df = 0;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2488 __be32 saddr;
c6fcc4fc5f8b59 drivers/net/vxlan.c pravin shelar 2016-10-28 2489
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2490 if (!ifindex)
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2491 ifindex = sock4->sock->sk->sk_bound_dev_if;
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2492
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2493 rt = udp_tunnel_dst_lookup(skb, dev, vxlan->net, ifindex,
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2494 &saddr, pkey, src_port, dst_port,
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2495 tos, use_cache ? dst_cache : NULL);
8ebd115bb23ac4 drivers/net/vxlan.c David S. Miller 2016-11-15 2496 if (IS_ERR(rt)) {
8ebd115bb23ac4 drivers/net/vxlan.c David S. Miller 2016-11-15 2497 err = PTR_ERR(rt);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2498 goto tx_error;
8ebd115bb23ac4 drivers/net/vxlan.c David S. Miller 2016-11-15 2499 }
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2500
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2501 if (!info) {
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2502 /* Bypass encapsulation if the destination is local */
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2503 err = encap_bypass_if_local(skb, dev, vxlan, dst,
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2504 dst_port, ifindex, vni,
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2505 &rt->dst, rt->rt_flags);
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2506 if (err)
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2507 goto out_unlock;
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2508
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2509 if (vxlan->cfg.df == VXLAN_DF_SET) {
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2510 df = htons(IP_DF);
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2511 } else if (vxlan->cfg.df == VXLAN_DF_INHERIT) {
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2512 struct ethhdr *eth = eth_hdr(skb);
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2513
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2514 if (ntohs(eth->h_proto) == ETH_P_IPV6 ||
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2515 (ntohs(eth->h_proto) == ETH_P_IP &&
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2516 old_iph->frag_off & htons(IP_DF)))
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2517 df = htons(IP_DF);
b4d3069783bccf drivers/net/vxlan.c Stefano Brivio 2018-11-08 2518 }
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2519 } else if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT) {
6ceb31ca5f65ac drivers/net/vxlan.c Alexander Duyck 2016-02-19 2520 df = htons(IP_DF);
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2521 }
6ceb31ca5f65ac drivers/net/vxlan.c Alexander Duyck 2016-02-19 2522
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2523 ndst = &rt->dst;
94d166c5318c6e drivers/net/vxlan/vxlan_core.c Jiri Benc 2023-07-20 2524 err = skb_tunnel_check_pmtu(skb, ndst, vxlan_headroom(flags & VXLAN_F_GPE),
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2525 netif_is_any_bridge_port(dev));
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2526 if (err < 0) {
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2527 goto tx_error;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2528 } else if (err) {
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2529 if (info) {
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2530 struct ip_tunnel_info *unclone;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2531
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2532 unclone = skb_tunnel_info_unclone(skb);
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2533 if (unlikely(!unclone))
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2534 goto tx_error;
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2535
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2536 unclone->key.u.ipv4.src = pkey->u.ipv4.dst;
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2537 unclone->key.u.ipv4.dst = saddr;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2538 }
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2539 vxlan_encap_bypass(skb, vxlan, vxlan, vni, false);
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2540 dst_release(ndst);
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2541 goto out_unlock;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2542 }
a93bf0ff449064 drivers/net/vxlan.c Xin Long 2017-12-18 2543
a0dced17ad9dc0 drivers/net/vxlan.c Hangbin Liu 2020-08-05 2544 tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
0e6fbc5b6c6218 drivers/net/vxlan.c Pravin B Shelar 2013-06-17 2545 ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2546 err = vxlan_build_skb(skb, ndst, sizeof(struct iphdr),
54bfd872bf16d4 drivers/net/vxlan.c Jiri Benc 2016-02-16 2547 vni, md, flags, udp_sum);
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2548 if (err < 0)
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2549 goto tx_error;
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2550
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2551 udp_tunnel_xmit_skb(rt, sock4->sock->sk, skb, saddr,
b4a6c582b7ff13 drivers/net/vxlan/vxlan_core.c Beniamino Galvani 2023-10-09 2552 pkey->u.ipv4.dst, tos, ttl, df,
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2553 src_port, dst_port, xnet, !udp_sum);
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2554 #if IS_ENABLED(CONFIG_IPV6)
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2555 } else {
c6fcc4fc5f8b59 drivers/net/vxlan.c pravin shelar 2016-10-28 2556 struct vxlan_sock *sock6 = rcu_dereference(vxlan->vn6_sock);
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2557
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2558 if (!ifindex)
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2559 ifindex = sock6->sock->sk->sk_bound_dev_if;
aab8cc3630e325 drivers/net/vxlan.c Alexis Bauvin 2018-12-03 2560
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2561 ndst = vxlan6_get_route(vxlan, dev, sock6, skb, ifindex, tos,
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2562 label, &dst->sin6.sin6_addr,
1158632b5a2dcc drivers/net/vxlan.c Brian Russell 2017-02-24 2563 &local_ip.sin6.sin6_addr,
4ecb1d83f6abe8 drivers/net/vxlan.c Martynas Pumputis 2017-01-11 2564 dst_port, src_port,
db3c6139e6ead9 drivers/net/vxlan.c Daniel Borkmann 2016-03-04 2565 dst_cache, info);
e5d4b29fe86a91 drivers/net/vxlan.c Jiri Benc 2015-12-07 2566 if (IS_ERR(ndst)) {
8ebd115bb23ac4 drivers/net/vxlan.c David S. Miller 2016-11-15 2567 err = PTR_ERR(ndst);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2568 ndst = NULL;
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2569 goto tx_error;
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2570 }
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2571
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2572 if (!info) {
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2573 u32 rt6i_flags = ((struct rt6_info *)ndst)->rt6i_flags;
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2574
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2575 err = encap_bypass_if_local(skb, dev, vxlan, dst,
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2576 dst_port, ifindex, vni,
49f810f00fa347 drivers/net/vxlan.c Matthias Schiffer 2017-06-19 2577 ndst, rt6i_flags);
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2578 if (err)
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2579 goto out_unlock;
fee1fad7c73dd0 drivers/net/vxlan.c pravin shelar 2016-11-13 2580 }
35e2d1152b22ea drivers/net/vxlan.c Jesse Gross 2016-01-20 2581
94d166c5318c6e drivers/net/vxlan/vxlan_core.c Jiri Benc 2023-07-20 2582 err = skb_tunnel_check_pmtu(skb, ndst,
94d166c5318c6e drivers/net/vxlan/vxlan_core.c Jiri Benc 2023-07-20 2583 vxlan_headroom((flags & VXLAN_F_GPE) | VXLAN_F_IPV6),
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2584 netif_is_any_bridge_port(dev));
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2585 if (err < 0) {
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2586 goto tx_error;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2587 } else if (err) {
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2588 if (info) {
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2589 struct ip_tunnel_info *unclone;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2590 struct in6_addr src, dst;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2591
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2592 unclone = skb_tunnel_info_unclone(skb);
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2593 if (unlikely(!unclone))
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2594 goto tx_error;
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2595
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2596 src = remote_ip.sin6.sin6_addr;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2597 dst = local_ip.sin6.sin6_addr;
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2598 unclone->key.u.ipv6.src = src;
30a93d2b7d5a7c drivers/net/vxlan.c Antoine Tenart 2021-03-25 2599 unclone->key.u.ipv6.dst = dst;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2600 }
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2601
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2602 vxlan_encap_bypass(skb, vxlan, vxlan, vni, false);
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2603 dst_release(ndst);
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2604 goto out_unlock;
fc68c99577cc66 drivers/net/vxlan.c Stefano Brivio 2020-08-04 2605 }
a93bf0ff449064 drivers/net/vxlan.c Xin Long 2017-12-18 2606
a0dced17ad9dc0 drivers/net/vxlan.c Hangbin Liu 2020-08-05 2607 tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2608 ttl = ttl ? : ip6_dst_hoplimit(ndst);
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2609 skb_scrub_packet(skb, xnet);
f491e56dba511d drivers/net/vxlan.c Jiri Benc 2016-02-02 2610 err = vxlan_build_skb(skb, ndst, sizeof(struct ipv6hdr),
54bfd872bf16d4 drivers/net/vxlan.c Jiri Benc 2016-02-16 2611 vni, md, flags, udp_sum);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2612 if (err < 0)
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2613 goto tx_error;
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2614
0770b53bd276a7 drivers/net/vxlan.c pravin shelar 2016-11-13 2615 udp_tunnel6_xmit_skb(ndst, sock6->sock->sk, skb, dev,
1158632b5a2dcc drivers/net/vxlan.c Brian Russell 2017-02-24 2616 &local_ip.sin6.sin6_addr,
272d96a5ab1066 drivers/net/vxlan.c pravin shelar 2016-08-05 2617 &dst->sin6.sin6_addr, tos, ttl,
e7f70af111f086 drivers/net/vxlan.c Daniel Borkmann 2016-03-09 2618 label, src_port, dst_port, !udp_sum);
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2619 #endif
e4c7ed415387cf drivers/net/vxlan.c Cong Wang 2013-08-31 2620 }
4095e0e1328a3c drivers/net/vxlan/vxlan_core.c Nikolay Aleksandrov 2022-03-01 2621 vxlan_vnifilter_count(vxlan, vni, NULL, VXLAN_VNI_STATS_TX, pkt_len);
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2622 out_unlock:
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2623 rcu_read_unlock();
4ad169300a7350 drivers/net/vxlan.c Stephen Hemminger 2013-06-17 2624 return;
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2625
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2626 drop:
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2627 dev->stats.tx_dropped++;
4095e0e1328a3c drivers/net/vxlan/vxlan_core.c Nikolay Aleksandrov 2022-03-01 2628 vxlan_vnifilter_count(vxlan, vni, NULL, VXLAN_VNI_STATS_TX_DROPS, 0);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2629 dev_kfree_skb(skb);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2630 return;
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2631
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2632 tx_error:
56de859e9967c0 drivers/net/vxlan.c Jakub Kicinski 2017-02-24 2633 rcu_read_unlock();
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2634 if (err == -ELOOP)
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2635 dev->stats.collisions++;
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2636 else if (err == -ENETUNREACH)
655c3de16540b8 drivers/net/vxlan.c pravin shelar 2016-11-13 2637 dev->stats.tx_carrier_errors++;
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2638 dst_release(ndst);
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2639 dev->stats.tx_errors++;
4095e0e1328a3c drivers/net/vxlan/vxlan_core.c Nikolay Aleksandrov 2022-03-01 2640 vxlan_vnifilter_count(vxlan, vni, NULL, VXLAN_VNI_STATS_TX_ERRORS, 0);
c46b7897ad5ba4 drivers/net/vxlan.c pravin shelar 2016-11-13 2641 kfree_skb(skb);
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2642 }
d342894c5d2f8c drivers/net/vxlan.c stephen hemminger 2012-10-01 2643

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