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authorNeal Cardwell <ncardwell@google.com>2012-02-27 17:52:52 -0500
committerDavid S. Miller <davem@davemloft.net>2012-02-28 15:06:33 -0500
commitecb971923614775a118bc05ad16b2bde450cac7d (patch)
treefaccc868f922b2985341ba8dd6a6a401e6cf32d1 /include
parenteea79e0713d94b02952f6c591b615710fd40a562 (diff)
downloadlinux-linaro-stable-ecb971923614775a118bc05ad16b2bde450cac7d.tar.gz
tcp: fix comment for tp->highest_sack
There was an off-by-one error in the comments describing the highest_sack field in struct tcp_sock. The comments previously claimed that it was the "start sequence of the highest skb with SACKed bit". This commit fixes the comments to note that it is the "start sequence of the skb just *after* the highest skb with SACKed bit". Signed-off-by: Neal Cardwell <ncardwell@google.com> Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/tcp.h3
-rw-r--r--include/net/tcp.h5
2 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 46a85c9e1f25..3c7ffdb40dc6 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -412,7 +412,8 @@ struct tcp_sock {
struct tcp_sack_block recv_sack_cache[4];
- struct sk_buff *highest_sack; /* highest skb with SACK received
+ struct sk_buff *highest_sack; /* skb just after the highest
+ * skb with SACKed bit set
* (validity guaranteed only if
* sacked_out > 0)
*/
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 42c29bfbcee3..2d80c291fffb 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1364,8 +1364,9 @@ static inline void tcp_push_pending_frames(struct sock *sk)
}
}
-/* Start sequence of the highest skb with SACKed bit, valid only if
- * sacked > 0 or when the caller has ensured validity by itself.
+/* Start sequence of the skb just after the highest skb with SACKed
+ * bit, valid only if sacked_out > 0 or when the caller has ensured
+ * validity by itself.
*/
static inline u32 tcp_highest_sack_seq(struct tcp_sock *tp)
{