From 2798e36dc233a409a5d3f26f73029596dc504020 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 1 Feb 2023 17:43:45 +0000 Subject: tcp: add TCP_MINTTL drop reason In the unlikely case incoming packets are dropped because of IP_MINTTL / IPV6_MINHOPCOUNT constraints... Signed-off-by: Eric Dumazet Link: https://lore.kernel.org/r/20230201174345.2708943-1-edumazet@google.com Signed-off-by: Jakub Kicinski --- include/net/dropreason.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/net/dropreason.h') diff --git a/include/net/dropreason.h b/include/net/dropreason.h index 70539288f995..94bc3d5d8803 100644 --- a/include/net/dropreason.h +++ b/include/net/dropreason.h @@ -71,6 +71,7 @@ FN(DUP_FRAG) \ FN(FRAG_REASM_TIMEOUT) \ FN(FRAG_TOO_FAR) \ + FN(TCP_MINTTL) \ FNe(MAX) /** @@ -312,6 +313,11 @@ enum skb_drop_reason { * (/proc/sys/net/ipv4/ipfrag_max_dist) */ SKB_DROP_REASON_FRAG_TOO_FAR, + /** + * @SKB_DROP_REASON_TCP_MINTTL: ipv4 ttl or ipv6 hoplimit below + * the threshold (IP_MINTTL or IPV6_MINHOPCOUNT). + */ + SKB_DROP_REASON_TCP_MINTTL, /** * @SKB_DROP_REASON_MAX: the maximum of drop reason, which shouldn't be * used as a real 'reason' -- cgit v1.2.3