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| author | Menglong Dong <imagedong@tencent.com> | 2022-02-20 10:06:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-20 16:55:31 +0300 |
| commit | a7ec381049c0d1f03e342063d75f5c3b314d0ec2 (patch) | |
| tree | 3da55283aa998066521ac9367364d162a49d7cdd /include | |
| parent | 2a968ef60e1fac4e694d9f60ce19a3b66b40e8c3 (diff) | |
| download | linux-a7ec381049c0d1f03e342063d75f5c3b314d0ec2.tar.xz | |
net: tcp: use tcp_drop_reason() for tcp_data_queue()
Replace tcp_drop() used in tcp_data_queue() with tcp_drop_reason().
Following drop reasons are introduced:
SKB_DROP_REASON_TCP_ZEROWINDOW
SKB_DROP_REASON_TCP_OLD_DATA
SKB_DROP_REASON_TCP_OVERWINDOW
SKB_DROP_REASON_TCP_OLD_DATA is used for the case that end_seq of skb
less than the left edges of receive window. (Maybe there is a better
name?)
Reviewed-by: Mengen Sun <mengensun@tencent.com>
Reviewed-by: Hao Peng <flyingpeng@tencent.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 13 | ||||
| -rw-r--r-- | include/trace/events/skb.h | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 671db9f49efe..554ef2c848ee 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -363,6 +363,19 @@ enum skb_drop_reason { * LINUX_MIB_TCPBACKLOGDROP) */ SKB_DROP_REASON_TCP_FLAGS, /* TCP flags invalid */ + SKB_DROP_REASON_TCP_ZEROWINDOW, /* TCP receive window size is zero, + * see LINUX_MIB_TCPZEROWINDOWDROP + */ + SKB_DROP_REASON_TCP_OLD_DATA, /* the TCP data reveived is already + * received before (spurious retrans + * may happened), see + * LINUX_MIB_DELAYEDACKLOST + */ + SKB_DROP_REASON_TCP_OVERWINDOW, /* the TCP data is out of window, + * the seq of the first byte exceed + * the right edges of receive + * window + */ SKB_DROP_REASON_MAX, }; diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h index d332e7313a61..cc1c8f7eaf72 100644 --- a/include/trace/events/skb.h +++ b/include/trace/events/skb.h @@ -33,6 +33,9 @@ EM(SKB_DROP_REASON_TCP_MD5FAILURE, TCP_MD5FAILURE) \ EM(SKB_DROP_REASON_SOCKET_BACKLOG, SOCKET_BACKLOG) \ EM(SKB_DROP_REASON_TCP_FLAGS, TCP_FLAGS) \ + EM(SKB_DROP_REASON_TCP_ZEROWINDOW, TCP_ZEROWINDOW) \ + EM(SKB_DROP_REASON_TCP_OLD_DATA, TCP_OLD_DATA) \ + EM(SKB_DROP_REASON_TCP_OVERWINDOW, TCP_OVERWINDOW) \ EMe(SKB_DROP_REASON_MAX, MAX) #undef EM |