[SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 11 insertions, 7 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e580416de78a..8f158d66d2a8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -237,7 +237,6 @@ struct sk_buff {
         /* 4 byte hole on 64 bit*/
 
         union {
-                struct tcphdr   *th;
                 struct iphdr    *ipiph;
                 struct ipv6hdr  *ipv6h;
                 unsigned char   *raw;
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 244ae0dacf4a..911d937fb4c1 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -178,14 +178,19 @@ struct tcp_md5sig {
 #include <net/inet_connection_sock.h>
 #include <net/inet_timewait_sock.h>
 
+static inline struct tcphdr *tcp_hdr(const struct sk_buff *skb)
+{
+        return (struct tcphdr *)skb->h.raw;
+}
+
 static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
 {
-        return skb->h.th->doff * 4;
+        return tcp_hdr(skb)->doff * 4;
 }
 
 static inline unsigned int tcp_optlen(const struct sk_buff *skb)
 {
-        return (skb->h.th->doff - 5) * 4;
+        return (tcp_hdr(skb)->doff - 5) * 4;
 }
 
 /* This defines a selective acknowledgement block. */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 6dacc352dcf1..af9273204cfd 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -984,7 +984,7 @@ static inline void tcp_openreq_init(struct request_sock *req,
         ireq->wscale_ok = rx_opt->wscale_ok;
         ireq->acked = 0;
         ireq->ecn_ok = 0;
-        ireq->rmt_port = skb->h.th->source;
+        ireq->rmt_port = tcp_hdr(skb)->source;
 }
 
 extern void tcp_enter_memory_pressure(void);
diff --git a/include/net/tcp_ecn.h b/include/net/tcp_ecn.h
index 4629d77173f2..b5f7c6ac0880 100644
--- a/include/net/tcp_ecn.h
+++ b/include/net/tcp_ecn.h
@@ -54,7 +54,7 @@ static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp,
                         INET_ECN_xmit(sk);
                         if (tp->ecn_flags&TCP_ECN_QUEUE_CWR) {
                                 tp->ecn_flags &= ~TCP_ECN_QUEUE_CWR;
-                                skb->h.th->cwr = 1;
+                                tcp_hdr(skb)->cwr = 1;
                                 skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN;
                         }
                 } else {
@@ -62,7 +62,7 @@ static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp,
                         INET_ECN_dontxmit(sk);
                 }
                 if (tp->ecn_flags & TCP_ECN_DEMAND_CWR)
-                        skb->h.th->ece = 1;
+                        tcp_hdr(skb)->ece = 1;
         }
 }
 
@@ -70,7 +70,7 @@ static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp,
 
 static inline void TCP_ECN_accept_cwr(struct tcp_sock *tp, struct sk_buff *skb)
 {
-        if (skb->h.th->cwr)
+        if (tcp_hdr(skb)->cwr)
                 tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR;
 }