ip_tunnel: implement __iptunnel_pull_header

Allow calling of iptunnel_pull_header without special casing ETH_P_TEB inner
protocol.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 56050f9..16435d8 100644 (file)
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -295,8 +295,15 @@ static inline u8 ip_tunnel_ecn_encap(u8 tos, const struct iphdr *iph,
        return INET_ECN_encapsulate(tos, inner);
 }
 
-int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
-                        bool xnet);
+int __iptunnel_pull_header(struct sk_buff *skb, int hdr_len,
+                          __be16 inner_proto, bool raw_proto, bool xnet);
+
+static inline int iptunnel_pull_header(struct sk_buff *skb, int hdr_len,
+                                      __be16 inner_proto, bool xnet)
+{
+       return __iptunnel_pull_header(skb, hdr_len, inner_proto, false, xnet);
+}
+
 void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
                   __be32 src, __be32 dst, u8 proto,
                   u8 tos, u8 ttl, __be16 df, bool xnet);

diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index b3ab120..43445df 100644 (file)
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -86,15 +86,15 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
 }
 EXPORT_SYMBOL_GPL(iptunnel_xmit);
 
-int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
-                        bool xnet)
+int __iptunnel_pull_header(struct sk_buff *skb, int hdr_len,
+                          __be16 inner_proto, bool raw_proto, bool xnet)
 {
        if (unlikely(!pskb_may_pull(skb, hdr_len)))
                return -ENOMEM;
 
        skb_pull_rcsum(skb, hdr_len);
 
-       if (inner_proto == htons(ETH_P_TEB)) {
+       if (!raw_proto && inner_proto == htons(ETH_P_TEB)) {
                struct ethhdr *eh;
 
                if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
@@ -117,7 +117,7 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
 
        return iptunnel_pull_offloads(skb);
 }
-EXPORT_SYMBOL_GPL(iptunnel_pull_header);
+EXPORT_SYMBOL_GPL(__iptunnel_pull_header);
 
 struct metadata_dst *iptunnel_metadata_reply(struct metadata_dst *md,
                                             gfp_t flags)