From: Menglong Dong <imagedong@tencent.com>
Date: Sat, 5 Feb 2022 07:47:33 +0000 (+0800)
Subject: net: skb_drop_reason: add document for drop reasons
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f3ed670ef8500b41d58805792a5a10d4adb3563b;p=linux.git

net: skb_drop_reason: add document for drop reasons

[ Upstream commit 88590b369354092183bcba04e2368010c462557f ]

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@tencent.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f92f05c9d72d3..f329c617eb965 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -311,12 +311,12 @@ 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,
 };