From 3d359faba191c95e97ac6699b0163e797812bfca Mon Sep 17 00:00:00 2001 From: Jason Xing Date: Mon, 26 Feb 2024 11:22:23 +0800 Subject: [PATCH] tcp: introduce dropreasons in receive path Soon later patches can use these relatively more accurate reasons to recognise and find out the cause. Signed-off-by: Jason Xing Reviewed-by: Eric Dumazet Reviewed-by: David Ahern Reviewed-by: Kuniyuki Iwashima Signed-off-by: David S. Miller --- include/net/dropreason-core.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h index a871f061558d..9707ab54fdd5 100644 --- a/include/net/dropreason-core.h +++ b/include/net/dropreason-core.h @@ -30,6 +30,7 @@ FN(TCP_AOFAILURE) \ FN(SOCKET_BACKLOG) \ FN(TCP_FLAGS) \ + FN(TCP_ABORT_ON_DATA) \ FN(TCP_ZEROWINDOW) \ FN(TCP_OLD_DATA) \ FN(TCP_OVERWINDOW) \ @@ -37,6 +38,7 @@ FN(TCP_RFC7323_PAWS) \ FN(TCP_OLD_SEQUENCE) \ FN(TCP_INVALID_SEQUENCE) \ + FN(TCP_INVALID_ACK_SEQUENCE) \ FN(TCP_RESET) \ FN(TCP_INVALID_SYN) \ FN(TCP_CLOSE) \ @@ -204,6 +206,11 @@ enum skb_drop_reason { SKB_DROP_REASON_SOCKET_BACKLOG, /** @SKB_DROP_REASON_TCP_FLAGS: TCP flags invalid */ SKB_DROP_REASON_TCP_FLAGS, + /** + * @SKB_DROP_REASON_TCP_ABORT_ON_DATA: abort on data, corresponding to + * LINUX_MIB_TCPABORTONDATA + */ + SKB_DROP_REASON_TCP_ABORT_ON_DATA, /** * @SKB_DROP_REASON_TCP_ZEROWINDOW: TCP receive window size is zero, * see LINUX_MIB_TCPZEROWINDOWDROP @@ -228,13 +235,19 @@ enum skb_drop_reason { SKB_DROP_REASON_TCP_OFOMERGE, /** * @SKB_DROP_REASON_TCP_RFC7323_PAWS: PAWS check, corresponding to - * LINUX_MIB_PAWSESTABREJECTED + * LINUX_MIB_PAWSESTABREJECTED, LINUX_MIB_PAWSACTIVEREJECTED */ SKB_DROP_REASON_TCP_RFC7323_PAWS, /** @SKB_DROP_REASON_TCP_OLD_SEQUENCE: Old SEQ field (duplicate packet) */ SKB_DROP_REASON_TCP_OLD_SEQUENCE, /** @SKB_DROP_REASON_TCP_INVALID_SEQUENCE: Not acceptable SEQ field */ SKB_DROP_REASON_TCP_INVALID_SEQUENCE, + /** + * @SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE: Not acceptable ACK SEQ + * field because ack sequence is not in the window between snd_una + * and snd_nxt + */ + SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE, /** @SKB_DROP_REASON_TCP_RESET: Invalid RST packet */ SKB_DROP_REASON_TCP_RESET, /**