diff options
Diffstat (limited to 'net/ipv6/ip6_gre.c')
| -rw-r--r-- | net/ipv6/ip6_gre.c | 51 |
1 files changed, 40 insertions, 11 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 458de353f5d9..c8cf2fdbb13b 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -848,7 +848,7 @@ static inline int ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev) } /** - * ip6_tnl_addr_conflict - compare packet addresses to tunnel's own + * ip6gre_tnl_addr_conflict - compare packet addresses to tunnel's own * @t: the outgoing tunnel device * @hdr: IPv6 header from the incoming packet * @@ -937,6 +937,8 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, struct flowi6 fl6; int err = -EINVAL; __u32 mtu; + int nhoff; + int thoff; if (!ip6_tnl_xmit_ctl(t, &t->parms.laddr, &t->parms.raddr)) goto tx_err; @@ -949,6 +951,16 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, truncate = true; } + nhoff = skb_network_header(skb) - skb_mac_header(skb); + if (skb->protocol == htons(ETH_P_IP) && + (ntohs(ip_hdr(skb)->tot_len) > skb->len - nhoff)) + truncate = true; + + thoff = skb_transport_header(skb) - skb_mac_header(skb); + if (skb->protocol == htons(ETH_P_IPV6) && + (ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff)) + truncate = true; + if (skb_cow_head(skb, dev->needed_headroom ?: t->hlen)) goto tx_err; @@ -1376,6 +1388,7 @@ static void ip6gre_dev_free(struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); + gro_cells_destroy(&t->gro_cells); dst_cache_destroy(&t->dst_cache); free_percpu(dev->tstats); } @@ -1443,11 +1456,12 @@ static int ip6gre_tunnel_init_common(struct net_device *dev) return -ENOMEM; ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL); - if (ret) { - free_percpu(dev->tstats); - dev->tstats = NULL; - return ret; - } + if (ret) + goto cleanup_alloc_pcpu_stats; + + ret = gro_cells_init(&tunnel->gro_cells, dev); + if (ret) + goto cleanup_dst_cache_init; t_hlen = ip6gre_calc_hlen(tunnel); dev->mtu = ETH_DATA_LEN - t_hlen; @@ -1463,6 +1477,13 @@ static int ip6gre_tunnel_init_common(struct net_device *dev) ip6gre_tnl_init_features(dev); return 0; + +cleanup_dst_cache_init: + dst_cache_destroy(&tunnel->dst_cache); +cleanup_alloc_pcpu_stats: + free_percpu(dev->tstats); + dev->tstats = NULL; + return ret; } static int ip6gre_tunnel_init(struct net_device *dev) @@ -1822,11 +1843,12 @@ static int ip6erspan_tap_init(struct net_device *dev) return -ENOMEM; ret = dst_cache_init(&tunnel->dst_cache, GFP_KERNEL); - if (ret) { - free_percpu(dev->tstats); - dev->tstats = NULL; - return ret; - } + if (ret) + goto cleanup_alloc_pcpu_stats; + + ret = gro_cells_init(&tunnel->gro_cells, dev); + if (ret) + goto cleanup_dst_cache_init; t_hlen = ip6erspan_calc_hlen(tunnel); dev->mtu = ETH_DATA_LEN - t_hlen; @@ -1839,6 +1861,13 @@ static int ip6erspan_tap_init(struct net_device *dev) ip6erspan_tnl_link_config(tunnel, 1); return 0; + +cleanup_dst_cache_init: + dst_cache_destroy(&tunnel->dst_cache); +cleanup_alloc_pcpu_stats: + free_percpu(dev->tstats); + dev->tstats = NULL; + return ret; } static const struct net_device_ops ip6erspan_netdev_ops = { |