diff options
| author | Stefano Brivio <sbrivio@redhat.com> | 2018-10-13 00:53:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-18 07:51:13 +0300 |
| commit | 7463e4f9b99c089cc962033b46349ff29f466e40 (patch) | |
| tree | 6fbeefca60c20be0d9a94de89e1c14294f7a2f9d /drivers/net | |
| parent | 0ac1077e3a549bf8d35971613e2be05bdbb41a00 (diff) | |
| download | linux-7463e4f9b99c089cc962033b46349ff29f466e40.tar.xz | |
geneve, vxlan: Don't check skb_dst() twice
Commit f15ca723c1eb ("net: don't call update_pmtu unconditionally") avoids
that we try updating PMTU for a non-existent destination, but didn't clean
up cases where the check was already explicit. Drop those redundant checks.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/geneve.c | 15 | ||||
| -rw-r--r-- | drivers/net/vxlan.c | 12 |
2 files changed, 6 insertions, 21 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 6acb6b5718b9..61c4bfbeb41c 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -830,12 +830,8 @@ static int geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev, if (IS_ERR(rt)) return PTR_ERR(rt); - if (skb_dst(skb)) { - int mtu = dst_mtu(&rt->dst) - GENEVE_IPV4_HLEN - - info->options_len; - - skb_dst_update_pmtu(skb, mtu); - } + skb_dst_update_pmtu(skb, dst_mtu(&rt->dst) - + GENEVE_IPV4_HLEN - info->options_len); sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); if (geneve->collect_md) { @@ -876,11 +872,8 @@ static int geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev, if (IS_ERR(dst)) return PTR_ERR(dst); - if (skb_dst(skb)) { - int mtu = dst_mtu(dst) - GENEVE_IPV6_HLEN - info->options_len; - - skb_dst_update_pmtu(skb, mtu); - } + skb_dst_update_pmtu(skb, dst_mtu(dst) - + GENEVE_IPV6_HLEN - info->options_len); sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true); if (geneve->collect_md) { diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 2b8da2b7e721..22e0ce592e07 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2194,11 +2194,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, } ndst = &rt->dst; - if (skb_dst(skb)) { - int mtu = dst_mtu(ndst) - VXLAN_HEADROOM; - - skb_dst_update_pmtu(skb, mtu); - } + skb_dst_update_pmtu(skb, dst_mtu(ndst) - VXLAN_HEADROOM); tos = ip_tunnel_ecn_encap(tos, old_iph, skb); ttl = ttl ? : ip4_dst_hoplimit(&rt->dst); @@ -2235,11 +2231,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, goto out_unlock; } - if (skb_dst(skb)) { - int mtu = dst_mtu(ndst) - VXLAN6_HEADROOM; - - skb_dst_update_pmtu(skb, mtu); - } + skb_dst_update_pmtu(skb, dst_mtu(ndst) - VXLAN6_HEADROOM); tos = ip_tunnel_ecn_encap(tos, old_iph, skb); ttl = ttl ? : ip6_dst_hoplimit(ndst); |