1 files changed, 18 insertions, 3 deletions

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 29d3089038ab..c6b9f92e8289 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -178,6 +178,21 @@ 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_transport_header(skb);
+}
+
+static inline unsigned int tcp_hdrlen(const struct sk_buff *skb)
+{
+        return tcp_hdr(skb)->doff * 4;
+}
+
+static inline unsigned int tcp_optlen(const struct sk_buff *skb)
+{
+        return (tcp_hdr(skb)->doff - 5) * 4;
+}
+
 /* This defines a selective acknowledgement block. */
 struct tcp_sack_block_wire {
         __be32  start_seq;
@@ -242,6 +257,8 @@ struct tcp_sock {
  *      See RFC793 and RFC1122. The RFC writes these in capitals.
  */
         u32     rcv_nxt;        /* What we want to receive next         */
+        u32     copied_seq;     /* Head of yet unread data              */
+        u32     rcv_wup;        /* rcv_nxt on last window update sent   */
         u32     snd_nxt;        /* Next sequence we send                */
 
         u32     snd_una;        /* First byte we want an ack for        */
@@ -300,17 +317,15 @@ struct tcp_sock {
         u32     snd_ssthresh;   /* Slow start size threshold            */
         u32     snd_cwnd;       /* Sending congestion window            */
         u16     snd_cwnd_cnt;   /* Linear increase counter              */
-        u16     snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
+        u32     snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
         u32     snd_cwnd_used;
         u32     snd_cwnd_stamp;
 
         struct sk_buff_head     out_of_order_queue; /* Out of order segments go here */
 
         u32     rcv_wnd;        /* Current receiver window              */
-        u32     rcv_wup;        /* rcv_nxt on last window update sent   */
         u32     write_seq;      /* Tail(+1) of data held in tcp send buffer */
         u32     pushed_seq;     /* Last pushed seq, required to talk to windows */
-        u32     copied_seq;     /* Head of yet unread data              */
 
 /*      SACKs data      */
         struct tcp_sack_block duplicate_sack[1]; /* D-SACK block */