linux-kernel - [PATCH v3 net-next 1/7] net: skb_drop_reason: add document for drop reasons

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Date:   Fri, 28 Jan 2022 15:33:13 +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, pablo@...filter.org, kadlec@...filter.org,
        fw@...len.de, imagedong@...cent.com, edumazet@...gle.com,
        alobakin@...me, paulb@...dia.com, keescook@...omium.org,
        talalahmad@...gle.com, haokexin@...il.com, memxor@...il.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        cong.wang@...edance.com, mengensun@...cent.com
Subject: [PATCH v3 net-next 1/7] net: skb_drop_reason: add document for drop reasons

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

Add document for following existing drop reasons:

SKB_DROP_REASON_NOT_SPECIFIED
SKB_DROP_REASON_NO_SOCKET
SKB_DROP_REASON_PKT_TOO_SMALL
SKB_DROP_REASON_TCP_CSUM
SKB_DROP_REASON_SOCKET_FILTER
SKB_DROP_REASON_UDP_CSUM

Signed-off-by: Menglong Dong <imagedong@...cent.com>
---
 include/linux/skbuff.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 8a636e678902..5c5615a487e7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -314,12 +314,12 @@ struct sk_buff;
  * used to translate the reason to string.
  */
 enum skb_drop_reason {
-	SKB_DROP_REASON_NOT_SPECIFIED,
-	SKB_DROP_REASON_NO_SOCKET,
-	SKB_DROP_REASON_PKT_TOO_SMALL,
-	SKB_DROP_REASON_TCP_CSUM,
-	SKB_DROP_REASON_SOCKET_FILTER,
-	SKB_DROP_REASON_UDP_CSUM,
+	SKB_DROP_REASON_NOT_SPECIFIED,	/* drop reason is not specified */
+	SKB_DROP_REASON_NO_SOCKET,	/* socket not found */
+	SKB_DROP_REASON_PKT_TOO_SMALL,	/* packet size is too small */
+	SKB_DROP_REASON_TCP_CSUM,	/* TCP checksum error */
+	SKB_DROP_REASON_SOCKET_FILTER,	/* dropped by socket filter */
+	SKB_DROP_REASON_UDP_CSUM,	/* UDP checksum error */
 	SKB_DROP_REASON_MAX,
 };
 
-- 
2.34.1