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authorEric Dumazet <edumazet@google.com>2014-09-06 02:33:33 +0400
committerDavid S. Miller <davem@davemloft.net>2014-09-06 04:49:33 +0400
commit7faee5c0d514162853a343d93e4a0b6bb8bfec21 (patch)
treeebaba03f755dfbe9d942fbe610ce3aecd1b0fc33 /include/net/tcp.h
parent04317dafd11dd7b0ec19b85f098414abae6ed5f7 (diff)
downloadlinux-7faee5c0d514162853a343d93e4a0b6bb8bfec21.tar.xz
tcp: remove TCP_SKB_CB(skb)->when
After commit 740b0f1841f6 ("tcp: switch rtt estimations to usec resolution"), we no longer need to maintain timestamps in two different fields. TCP_SKB_CB(skb)->when can be removed, as same information sits in skb_mstamp.stamp_jiffies Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h13
1 files changed, 7 insertions, 6 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 0cd7d2c65dc0..a4201ef216e8 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -672,6 +672,12 @@ void tcp_send_window_probe(struct sock *sk);
*/
#define tcp_time_stamp ((__u32)(jiffies))
+static inline u32 tcp_skb_timestamp(const struct sk_buff *skb)
+{
+ return skb->skb_mstamp.stamp_jiffies;
+}
+
+
#define tcp_flag_byte(th) (((u_int8_t *)th)[13])
#define TCPHDR_FIN 0x01
@@ -698,12 +704,7 @@ struct tcp_skb_cb {
} header; /* For incoming frames */
__u32 seq; /* Starting sequence number */
__u32 end_seq; /* SEQ + FIN + SYN + datalen */
- union {
- /* used in output path */
- __u32 when; /* used to compute rtt's */
- /* used in input path */
- __u32 tcp_tw_isn; /* isn chosen by tcp_timewait_state_process() */
- };
+ __u32 tcp_tw_isn; /* isn chosen by tcp_timewait_state_process() */
__u8 tcp_flags; /* TCP header flags. (tcp[13]) */
__u8 sacked; /* State flags for SACK/FACK. */