Re: [PATCH net-next v2 0/9] net: add skb drop reasons to TCP packet receive

[Eric Dumazet]

On Fri, Feb 18, 2022 at 12:32 AM <menglong8.dong@xxxxxxxxx> wrote:
>
> From: Menglong Dong <imagedong@xxxxxxxxxxx>
>
> In the commit c504e5c2f964 ("net: skb: introduce kfree_skb_reason()"),
> we added the support of reporting the reasons of skb drops to kfree_skb
> tracepoint. And in this series patches, reasons for skb drops are added
> to TCP layer (both TCPv4 and TCPv6 are considered).
> Following functions are processed:
>

>
> /* SKB_DROP_REASON_TCP_MD5* corresponding to LINUX_MIB_TCPMD5* */
> SKB_DROP_REASON_TCP_MD5NOTFOUND
> SKB_DROP_REASON_TCP_MD5UNEXPECTED
> SKB_DROP_REASON_TCP_MD5FAILURE
> SKB_DROP_REASON_SOCKET_BACKLOG
> SKB_DROP_REASON_TCP_FLAGS
> SKB_DROP_REASON_TCP_ZEROWINDOW
> SKB_DROP_REASON_TCP_OLD_DATA
> SKB_DROP_REASON_TCP_OVERWINDOW
> /* corresponding to LINUX_MIB_TCPOFOMERGE */
> SKB_DROP_REASON_TCP_OFOMERGE
>

For the whole series:

Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>

Thanks !