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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2013-09-02 15:34:57 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-04 00:27:25 -0400
commit963a88b31ddbbe99f38502239b1a46601773d217 (patch)
tree9c07bbee7240db69d82d2152b7e47013012c739b
parent8b27f27797cac5ed9b2f3e63dac89a7ae70e70a7 (diff)
downloadop-kernel-dev-963a88b31ddbbe99f38502239b1a46601773d217.zip
op-kernel-dev-963a88b31ddbbe99f38502239b1a46601773d217.tar.gz
tunnels: harmonize cleanup done on skb on xmit path
The goal of this patch is to harmonize cleanup done on a skbuff on xmit path. Before this patch, behaviors were different depending of the tunnel type. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/vxlan.c6
-rw-r--r--include/net/ip6_tunnel.h1
-rw-r--r--include/net/ip_tunnels.h2
-rw-r--r--net/ipv4/ip_tunnel.c6
-rw-r--r--net/ipv4/ip_tunnel_core.c7
-rw-r--r--net/ipv6/ip6_gre.c4
-rw-r--r--net/ipv6/ip6_tunnel.c4
-rw-r--r--net/ipv6/sit.c5
-rw-r--r--net/openvswitch/vport-gre.c2
9 files changed, 15 insertions, 22 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index a334bfb..ebda3a1 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1397,6 +1397,8 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
skb->encapsulation = 1;
}
+ skb_scrub_packet(skb, false);
+
min_headroom = LL_RESERVED_SPACE(dst->dev) + dst->header_len
+ VXLAN_HLEN + sizeof(struct ipv6hdr)
+ (vlan_tx_tag_present(skb) ? VLAN_HLEN : 0);
@@ -1432,7 +1434,6 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
IPSKB_REROUTED);
- skb_dst_drop(skb);
skb_dst_set(skb, dst);
if (!skb_is_gso(skb) && !(dst->dev->features & NETIF_F_IPV6_CSUM)) {
@@ -1528,7 +1529,8 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
if (err)
return err;
- return iptunnel_xmit(rt, skb, src, dst, IPPROTO_UDP, tos, ttl, df);
+ return iptunnel_xmit(rt, skb, src, dst, IPPROTO_UDP, tos, ttl, df,
+ false);
}
EXPORT_SYMBOL_GPL(vxlan_xmit_skb);
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
index 2265b0b..6d1549c 100644
--- a/include/net/ip6_tunnel.h
+++ b/include/net/ip6_tunnel.h
@@ -75,7 +75,6 @@ static inline void ip6tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
struct net_device_stats *stats = &dev->stats;
int pkt_len, err;
- nf_reset(skb);
pkt_len = skb->len;
err = ip6_local_out(skb);
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 94fe8fd..a0a4a10 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -148,7 +148,7 @@ static inline u8 ip_tunnel_ecn_encap(u8 tos, const struct iphdr *iph,
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto);
int iptunnel_xmit(struct rtable *rt, struct sk_buff *skb,
__be32 src, __be32 dst, __u8 proto,
- __u8 tos, __u8 ttl, __be16 df);
+ __u8 tos, __u8 ttl, __be16 df, bool xnet);
static inline void iptunnel_xmit_stats(int err,
struct net_device_stats *err_stats,
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index b0e74e1..88d7d7d 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -614,9 +614,6 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
goto tx_error;
}
- if (!net_eq(tunnel->net, dev_net(dev)))
- skb_scrub_packet(skb, true);
-
if (tunnel->err_count > 0) {
if (time_before(jiffies,
tunnel->err_time + IPTUNNEL_ERR_TIMEO)) {
@@ -655,7 +652,8 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
}
err = iptunnel_xmit(rt, skb, fl4.saddr, fl4.daddr, protocol,
- ip_tunnel_ecn_encap(tos, inner_iph, skb), ttl, df);
+ ip_tunnel_ecn_encap(tos, inner_iph, skb), ttl, df,
+ !net_eq(tunnel->net, dev_net(dev)));
iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
return;
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index e820458..d6c856b 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -48,16 +48,15 @@
int iptunnel_xmit(struct rtable *rt, struct sk_buff *skb,
__be32 src, __be32 dst, __u8 proto,
- __u8 tos, __u8 ttl, __be16 df)
+ __u8 tos, __u8 ttl, __be16 df, bool xnet)
{
int pkt_len = skb->len;
struct iphdr *iph;
int err;
- nf_reset(skb);
- secpath_reset(skb);
+ skb_scrub_packet(skb, xnet);
+
skb->rxhash = 0;
- skb_dst_drop(skb);
skb_dst_set(skb, &rt->dst);
memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index f2d0a42..f179ff1 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -694,6 +694,8 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
tunnel->err_count = 0;
}
+ skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(dev)));
+
max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + dst->header_len;
if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
@@ -710,8 +712,6 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
skb = new_skb;
}
- skb_dst_drop(skb);
-
if (fl6->flowi6_mark) {
skb_dst_set(skb, dst);
ndst = NULL;
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 72372ac..ecbcdbd 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1001,8 +1001,7 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
goto tx_err_dst_release;
}
- if (!net_eq(t->net, dev_net(dev)))
- skb_scrub_packet(skb, true);
+ skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
/*
* Okay, now see if we can stuff it in the buffer as-is.
@@ -1021,7 +1020,6 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
consume_skb(skb);
skb = new_skb;
}
- skb_dst_drop(skb);
if (fl6->flowi6_mark) {
skb_dst_set(skb, dst);
ndst = NULL;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index b2e44f4..82b425b 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -860,9 +860,6 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
tunnel->err_count = 0;
}
- if (!net_eq(tunnel->net, dev_net(dev)))
- skb_scrub_packet(skb, true);
-
/*
* Okay, now see if we can stuff it in the buffer as-is.
*/
@@ -889,7 +886,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
tos = INET_ECN_encapsulate(tos, ipv6_get_dsfield(iph6));
err = iptunnel_xmit(rt, skb, fl4.saddr, fl4.daddr, IPPROTO_IPV6, tos,
- ttl, df);
+ ttl, df, !net_eq(tunnel->net, dev_net(dev)));
iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
return NETDEV_TX_OK;
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index 9b3713e..c99dea5 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -179,7 +179,7 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
return iptunnel_xmit(rt, skb, fl.saddr,
OVS_CB(skb)->tun_key->ipv4_dst, IPPROTO_GRE,
OVS_CB(skb)->tun_key->ipv4_tos,
- OVS_CB(skb)->tun_key->ipv4_ttl, df);
+ OVS_CB(skb)->tun_key->ipv4_ttl, df, false);
err_free_rt:
ip_rt_put(rt);
error:
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