diff options
Diffstat (limited to 'net/ipv4/ip_gre.c')
| -rw-r--r-- | net/ipv4/ip_gre.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 38673d2860e2..b57532d4742c 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -10,6 +10,8 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/capability.h> #include <linux/module.h> #include <linux/types.h> @@ -730,15 +732,16 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev if (skb->protocol == htons(ETH_P_IP)) { rt = skb_rtable(skb); - if ((dst = rt->rt_gateway) == 0) - goto tx_error_icmp; + dst = rt->rt_gateway; } #if IS_ENABLED(CONFIG_IPV6) else if (skb->protocol == htons(ETH_P_IPV6)) { - struct neighbour *neigh = dst_get_neighbour_noref(skb_dst(skb)); const struct in6_addr *addr6; + struct neighbour *neigh; + bool do_tx_error_icmp; int addr_type; + neigh = dst_neigh_lookup(skb_dst(skb), &ipv6_hdr(skb)->daddr); if (neigh == NULL) goto tx_error; @@ -751,9 +754,14 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev } if ((addr_type & IPV6_ADDR_COMPATv4) == 0) + do_tx_error_icmp = true; + else { + do_tx_error_icmp = false; + dst = addr6->s6_addr32[3]; + } + neigh_release(neigh); + if (do_tx_error_icmp) goto tx_error_icmp; - - dst = addr6->s6_addr32[3]; } #endif else @@ -914,9 +922,10 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev __IPTUNNEL_XMIT(tstats, &dev->stats); return NETDEV_TX_OK; +#if IS_ENABLED(CONFIG_IPV6) tx_error_icmp: dst_link_failure(skb); - +#endif tx_error: dev->stats.tx_errors++; dev_kfree_skb(skb); @@ -1529,7 +1538,7 @@ static int ipgre_newlink(struct net *src_net, struct net_device *dev, struct nla return -EEXIST; if (dev->type == ARPHRD_ETHER && !tb[IFLA_ADDRESS]) - random_ether_addr(dev->dev_addr); + eth_hw_addr_random(dev); mtu = ipgre_tunnel_bind_dev(dev); if (!tb[IFLA_MTU]) @@ -1709,7 +1718,7 @@ static int __init ipgre_init(void) { int err; - printk(KERN_INFO "GRE over IPv4 tunneling driver\n"); + pr_info("GRE over IPv4 tunneling driver\n"); err = register_pernet_device(&ipgre_net_ops); if (err < 0) @@ -1717,7 +1726,7 @@ static int __init ipgre_init(void) err = gre_add_protocol(&ipgre_protocol, GREPROTO_CISCO); if (err < 0) { - printk(KERN_INFO "ipgre init: can't add protocol\n"); + pr_info("%s: can't add protocol\n", __func__); goto add_proto_failed; } @@ -1746,7 +1755,7 @@ static void __exit ipgre_fini(void) rtnl_link_unregister(&ipgre_tap_ops); rtnl_link_unregister(&ipgre_link_ops); if (gre_del_protocol(&ipgre_protocol, GREPROTO_CISCO) < 0) - printk(KERN_INFO "ipgre close: can't remove protocol\n"); + pr_info("%s: can't remove protocol\n", __func__); unregister_pernet_device(&ipgre_net_ops); } |