netdev - [PATCH v2 net-next 1/8] net: socket: intrudoce SKB_DROP_REASON_SOCKET

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Date:   Thu, 27 Jan 2022 17:13:01 +0800
From:   menglong8.dong@...il.com
To:     dsahern@...nel.org, kuba@...nel.org
Cc:     rostedt@...dmis.org, mingo@...hat.com, davem@...emloft.net,
        yoshfuji@...ux-ipv6.org, edumazet@...gle.com, pablo@...filter.org,
        kadlec@...filter.org, fw@...len.de, imagedong@...cent.com,
        alobakin@...me, pabeni@...hat.com, cong.wang@...edance.com,
        talalahmad@...gle.com, haokexin@...il.com, keescook@...omium.org,
        memxor@...il.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, mengensun@...cent.com
Subject: [PATCH v2 net-next 1/8] net: socket: intrudoce SKB_DROP_REASON_SOCKET_FILTER

From: Menglong Dong <imagedong@...cent.com>

Introduce SKB_DROP_REASON_SOCKET_FILTER, which is used as the reason
of skb drop out of socket filter. Meanwhile, replace
SKB_DROP_REASON_TCP_FILTER with it.

Signed-off-by: Menglong Dong <imagedong@...cent.com>
---
 include/linux/skbuff.h     | 2 +-
 include/trace/events/skb.h | 2 +-
 net/ipv4/tcp_ipv4.c        | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index bf11e1fbd69b..8a636e678902 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -318,7 +318,7 @@ enum skb_drop_reason {
 	SKB_DROP_REASON_NO_SOCKET,
 	SKB_DROP_REASON_PKT_TOO_SMALL,
 	SKB_DROP_REASON_TCP_CSUM,
-	SKB_DROP_REASON_TCP_FILTER,
+	SKB_DROP_REASON_SOCKET_FILTER,
 	SKB_DROP_REASON_UDP_CSUM,
 	SKB_DROP_REASON_MAX,
 };
diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h
index 3e042ca2cedb..a8a64b97504d 100644
--- a/include/trace/events/skb.h
+++ b/include/trace/events/skb.h
@@ -14,7 +14,7 @@
 	EM(SKB_DROP_REASON_NO_SOCKET, NO_SOCKET)		\
 	EM(SKB_DROP_REASON_PKT_TOO_SMALL, PKT_TOO_SMALL)	\
 	EM(SKB_DROP_REASON_TCP_CSUM, TCP_CSUM)			\
-	EM(SKB_DROP_REASON_TCP_FILTER, TCP_FILTER)		\
+	EM(SKB_DROP_REASON_SOCKET_FILTER, SOCKET_FILTER)	\
 	EM(SKB_DROP_REASON_UDP_CSUM, UDP_CSUM)			\
 	EMe(SKB_DROP_REASON_MAX, MAX)
 
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index b3f34e366b27..938b59636578 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2095,7 +2095,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
 	nf_reset_ct(skb);
 
 	if (tcp_filter(sk, skb)) {
-		drop_reason = SKB_DROP_REASON_TCP_FILTER;
+		drop_reason = SKB_DROP_REASON_SOCKET_FILTER;
 		goto discard_and_relse;
 	}
 	th = (const struct tcphdr *)skb->data;
-- 
2.34.1