From 6aed0c8bf7d2f389b472834053eb6e3bd6926999 Mon Sep 17 00:00:00 2001
From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Sat, 9 Mar 2013 16:38:39 +0000
Subject: [PATCH] tunnel: use iptunnel_xmit() again
With recent patches from Pravin, most tunnels can't use iptunnel_xmit()
any more, due to ip_select_ident() and skb->ip_summed. But we can just
move these operations out of iptunnel_xmit(), so that tunnels can
use it again.
This by the way fixes a bug in vxlan (missing nf_reset()) for net-next.
Cc: Pravin B Shelar <pshelar@nicira.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/vxlan.c | 14 +-------------
include/net/ipip.h | 3 ---
net/ipv4/ip_gre.c | 16 +---------------
net/ipv4/ipip.c | 18 +-----------------
net/ipv6/sit.c | 2 ++
5 files changed, 5 insertions(+), 48 deletions(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index f057ec00bba39..f3a135cb50a96 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -855,7 +855,6 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
__u16 src_port;
__be16 df = 0;
__u8 tos, ttl;
- int err;
bool did_rsc = false;
const struct vxlan_fdb *f;
@@ -980,18 +979,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
if (handle_offloads(skb))
goto drop;
- err = ip_local_out(skb);
- if (likely(net_xmit_eval(err) == 0)) {
- struct vxlan_stats *stats = this_cpu_ptr(vxlan->stats);
-
- u64_stats_update_begin(&stats->syncp);
- stats->tx_packets++;
- stats->tx_bytes += pkt_len;
- u64_stats_update_end(&stats->syncp);
- } else {
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- }
+ iptunnel_xmit(skb, dev);
return NETDEV_TX_OK;
drop:
diff --git a/include/net/ipip.h b/include/net/ipip.h
index fd19625ff99db..0c046e3bca05a 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -51,13 +51,10 @@ struct ip_tunnel_prl_entry {
static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev)
{
int err;
- struct iphdr *iph = ip_hdr(skb);
int pkt_len = skb->len - skb_transport_offset(skb);
struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
nf_reset(skb);
- skb->ip_summed = CHECKSUM_NONE;
- ip_select_ident(iph, skb_dst(skb), NULL);
err = ip_local_out(skb);
if (likely(net_xmit_eval(err) == 0)) {
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index d0ef0e674ec5c..a13a0972a57f3 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -762,7 +762,6 @@ error:
static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
struct ip_tunnel *tunnel = netdev_priv(dev);
const struct iphdr *old_iph;
const struct iphdr *tiph;
@@ -778,7 +777,6 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
int mtu;
u8 ttl;
int err;
- int pkt_len;
skb = handle_offloads(tunnel, skb);
if (IS_ERR(skb)) {
@@ -1022,19 +1020,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
}
}
- nf_reset(skb);
-
- pkt_len = skb->len - skb_transport_offset(skb);
- err = ip_local_out(skb);
- if (likely(net_xmit_eval(err) == 0)) {
- u64_stats_update_begin(&tstats->syncp);
- tstats->tx_bytes += pkt_len;
- tstats->tx_packets++;
- u64_stats_update_end(&tstats->syncp);
- } else {
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- }
+ iptunnel_xmit(skb, dev);
return NETDEV_TX_OK;
#if IS_ENABLED(CONFIG_IPV6)
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index b50435ba0ce5d..34e006fe2d870 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -478,8 +478,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
__be32 dst = tiph->daddr;
struct flowi4 fl4;
int mtu;
- int err;
- int pkt_len;
if (skb->protocol != htons(ETH_P_IP))
goto tx_error;
@@ -600,21 +598,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if ((iph->ttl = tiph->ttl) == 0)
iph->ttl = old_iph->ttl;
- nf_reset(skb);
-
- pkt_len = skb->len - skb_transport_offset(skb);
- err = ip_local_out(skb);
- if (likely(net_xmit_eval(err) == 0)) {
- struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
-
- u64_stats_update_begin(&tstats->syncp);
- tstats->tx_bytes += pkt_len;
- tstats->tx_packets++;
- u64_stats_update_end(&tstats->syncp);
- } else {
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- }
+ iptunnel_xmit(skb, dev);
return NETDEV_TX_OK;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 02f96dcbcf02a..898e671a526bc 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -899,6 +899,8 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
if ((iph->ttl = tiph->ttl) == 0)
iph->ttl = iph6->hop_limit;
+ skb->ip_summed = CHECKSUM_NONE;
+ ip_select_ident(iph, skb_dst(skb), NULL);
iptunnel_xmit(skb, dev);
return NETDEV_TX_OK;
--
2.30.2