X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=include%2Flinux%2Ftcp.h;h=34acee662230c85f15b433127b6357c744d3c248;hp=29d3089038ab6dab1393abc5c00509d1010f366d;hb=a47e5a988a57;hpb=f8abea8f8c24ecdad6d6861bffb912f23f2741cd

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 29d3089038ab..34acee662230 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	*/
@@ -287,7 +304,6 @@ struct tcp_sock {
 	u32	rtt_seq;	/* sequence number to update rttvar	*/
 
 	u32	packets_out;	/* Packets which are "in flight"	*/
-	u32	left_out;	/* Packets which leaved network	*/
 	u32	retrans_out;	/* Retransmitted packets out		*/
 /*
  *      Options received (usually on last packet, some only on SYN packets).
@@ -299,18 +315,16 @@ 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_cnt;	/* Linear increase counter		*/
+	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 */
@@ -318,6 +332,11 @@ struct tcp_sock {
 
 	struct tcp_sack_block_wire recv_sack_cache[4];
 
+	struct sk_buff *highest_sack;   /* highest skb with SACK received
+					 * (validity guaranteed only if
+					 * sacked_out > 0)
+					 */
+
 	/* from STCP, retrans queue hinting */
 	struct sk_buff* lost_skb_hint;
 
@@ -326,10 +345,12 @@ struct tcp_sock {
 	struct sk_buff *forward_skb_hint;
 	struct sk_buff *fastpath_skb_hint;
 
-	int     fastpath_cnt_hint;
+	int     fastpath_cnt_hint;	/* Lags behind by current skb's pcount
+					 * compared to respective fackets_out */
 	int     lost_cnt_hint;
 	int     retransmit_cnt_hint;
-	int     forward_cnt_hint;
+
+	u32	lost_retrans_low;	/* Sent seq after any rxmit (lowest) */
 
 	u16	advmss;		/* Advertised MSS			*/
 	u16	prior_ssthresh; /* ssthresh saved at recovery start	*/