diff options
| -rw-r--r-- | drivers/net/geneve.c | 98 |
1 files changed, 32 insertions, 66 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 572c3e36b209..23041eeec121 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -800,58 +800,6 @@ static u8 geneve_get_dsfield(struct sk_buff *skb, struct net_device *dev, return dsfield; } -static struct rtable *geneve_get_v4_rt(struct sk_buff *skb, - struct net_device *dev, - struct geneve_sock *gs4, - struct flowi4 *fl4, - const struct ip_tunnel_info *info, - __be16 dport, __be16 sport, - __u8 *full_tos) -{ - bool use_cache = ip_tunnel_dst_cache_usable(skb, info); - struct geneve_dev *geneve = netdev_priv(dev); - struct dst_cache *dst_cache; - struct rtable *rt = NULL; - __u8 tos; - - if (!gs4) - return ERR_PTR(-EIO); - - memset(fl4, 0, sizeof(*fl4)); - fl4->flowi4_mark = skb->mark; - fl4->flowi4_proto = IPPROTO_UDP; - fl4->daddr = info->key.u.ipv4.dst; - fl4->saddr = info->key.u.ipv4.src; - fl4->fl4_dport = dport; - fl4->fl4_sport = sport; - fl4->flowi4_flags = info->key.flow_flags; - - tos = geneve_get_dsfield(skb, dev, info, &use_cache); - fl4->flowi4_tos = RT_TOS(tos); - if (full_tos) - *full_tos = tos; - - dst_cache = (struct dst_cache *)&info->dst_cache; - if (use_cache) { - rt = dst_cache_get_ip4(dst_cache, &fl4->saddr); - if (rt) - return rt; - } - rt = ip_route_output_key(geneve->net, fl4); - if (IS_ERR(rt)) { - netdev_dbg(dev, "no route to %pI4\n", &fl4->daddr); - return ERR_PTR(-ENETUNREACH); - } - if (rt->dst.dev == dev) { /* is this necessary? */ - netdev_dbg(dev, "circular route to %pI4\n", &fl4->daddr); - ip_rt_put(rt); - return ERR_PTR(-ELOOP); - } - if (use_cache) - dst_cache_set_ip4(dst_cache, &rt->dst, fl4->saddr); - return rt; -} - #if IS_ENABLED(CONFIG_IPV6) static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb, struct net_device *dev, @@ -911,19 +859,28 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, struct geneve_sock *gs4 = rcu_dereference(geneve->sock4); const struct ip_tunnel_key *key = &info->key; struct rtable *rt; - struct flowi4 fl4; - __u8 full_tos; + bool use_cache; __u8 tos, ttl; __be16 df = 0; + __be32 saddr; __be16 sport; int err; if (!pskb_inet_may_pull(skb)) return -EINVAL; + if (!gs4) + return -EIO; + + use_cache = ip_tunnel_dst_cache_usable(skb, info); + tos = geneve_get_dsfield(skb, dev, info, &use_cache); sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); - rt = geneve_get_v4_rt(skb, dev, gs4, &fl4, info, - geneve->cfg.info.key.tp_dst, sport, &full_tos); + + rt = udp_tunnel_dst_lookup(skb, dev, geneve->net, 0, &saddr, + &info->key, + sport, geneve->cfg.info.key.tp_dst, tos, + use_cache ? + (struct dst_cache *)&info->dst_cache : NULL); if (IS_ERR(rt)) return PTR_ERR(rt); @@ -946,8 +903,8 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, return -ENOMEM; } - unclone->key.u.ipv4.dst = fl4.saddr; - unclone->key.u.ipv4.src = fl4.daddr; + unclone->key.u.ipv4.dst = saddr; + unclone->key.u.ipv4.src = info->key.u.ipv4.dst; } if (!pskb_may_pull(skb, ETH_HLEN)) { @@ -961,13 +918,12 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, return -EMSGSIZE; } + tos = ip_tunnel_ecn_encap(tos, ip_hdr(skb), skb); if (geneve->cfg.collect_md) { - tos = ip_tunnel_ecn_encap(key->tos, ip_hdr(skb), skb); ttl = key->ttl; df = key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0; } else { - tos = ip_tunnel_ecn_encap(full_tos, ip_hdr(skb), skb); if (geneve->cfg.ttl_inherit) ttl = ip_tunnel_get_ttl(ip_hdr(skb), skb); else @@ -995,7 +951,7 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, if (unlikely(err)) return err; - udp_tunnel_xmit_skb(rt, gs4->sock->sk, skb, fl4.saddr, fl4.daddr, + udp_tunnel_xmit_skb(rt, gs4->sock->sk, skb, saddr, info->key.u.ipv4.dst, tos, ttl, df, sport, geneve->cfg.info.key.tp_dst, !net_eq(geneve->net, dev_net(geneve->dev)), !(info->key.tun_flags & TUNNEL_CSUM)); @@ -1144,19 +1100,29 @@ static int geneve_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb) if (ip_tunnel_info_af(info) == AF_INET) { struct rtable *rt; - struct flowi4 fl4; - struct geneve_sock *gs4 = rcu_dereference(geneve->sock4); + bool use_cache; + __be32 saddr; + u8 tos; + + if (!gs4) + return -EIO; + + use_cache = ip_tunnel_dst_cache_usable(skb, info); + tos = geneve_get_dsfield(skb, dev, info, &use_cache); sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); - rt = geneve_get_v4_rt(skb, dev, gs4, &fl4, info, - geneve->cfg.info.key.tp_dst, sport, NULL); + rt = udp_tunnel_dst_lookup(skb, dev, geneve->net, 0, &saddr, + &info->key, + sport, geneve->cfg.info.key.tp_dst, + tos, + use_cache ? &info->dst_cache : NULL); if (IS_ERR(rt)) return PTR_ERR(rt); ip_rt_put(rt); - info->key.u.ipv4.src = fl4.saddr; + info->key.u.ipv4.src = saddr; #if IS_ENABLED(CONFIG_IPV6) } else if (ip_tunnel_info_af(info) == AF_INET6) { struct dst_entry *dst; |