From a11a791ca81e5cd9bf2d48e1368d836bc53f00ca Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 1 Mar 2025 20:14:20 +0000 Subject: tcp: add four drop reasons to tcp_check_req() Use two existing drop reasons in tcp_check_req(): - TCP_RFC7323_PAWS - TCP_OVERWINDOW Add two new ones: - TCP_RFC7323_TSECR (corresponds to LINUX_MIB_TSECRREJECTED) - TCP_LISTEN_OVERFLOW (when a listener accept queue is full) Signed-off-by: Eric Dumazet Reviewed-by: Jason Xing Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20250301201424.2046477-3-edumazet@google.com Signed-off-by: Jakub Kicinski --- include/net/dropreason-core.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/net/dropreason-core.h b/include/net/dropreason-core.h index 32a34dfe8cc5..e4fdc6b54cef 100644 --- a/include/net/dropreason-core.h +++ b/include/net/dropreason-core.h @@ -40,6 +40,8 @@ FN(TCP_OFOMERGE) \ FN(TCP_RFC7323_PAWS) \ FN(TCP_RFC7323_PAWS_ACK) \ + FN(TCP_RFC7323_TSECR) \ + FN(TCP_LISTEN_OVERFLOW) \ FN(TCP_OLD_SEQUENCE) \ FN(TCP_INVALID_SEQUENCE) \ FN(TCP_INVALID_ACK_SEQUENCE) \ @@ -281,6 +283,13 @@ enum skb_drop_reason { * Corresponds to LINUX_MIB_PAWS_OLD_ACK. */ SKB_DROP_REASON_TCP_RFC7323_PAWS_ACK, + /** + * @SKB_DROP_REASON_TCP_RFC7323_TSECR: PAWS check, invalid TSEcr. + * Corresponds to LINUX_MIB_TSECRREJECTED. + */ + SKB_DROP_REASON_TCP_RFC7323_TSECR, + /** @SKB_DROP_REASON_TCP_LISTEN_OVERFLOW: listener queue full. */ + SKB_DROP_REASON_TCP_LISTEN_OVERFLOW, /** @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 */ -- cgit v1.2.3