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net: skb_drop_reason: add document for drop reasons

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[ 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>
This commit is contained in:
Menglong Dong 2022-02-05 15:47:33 +08:00 committed by Greg Kroah-Hartman
parent 8ac90de3d1
commit f3ed670ef8
1 changed files with 6 additions and 6 deletions
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12
include/linux/skbuff.h
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@ -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,
};