netdev - Re: [PATCH RESEND net-next v5 1/4] net: sock: introduce sock_queue_rcv_skb

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Date:   Fri, 8 Apr 2022 21:49:54 -0600
From:   David Ahern <dsahern@...nel.org>
To:     menglong8.dong@...il.com, kuba@...nel.org, pabeni@...hat.com
Cc:     rostedt@...dmis.org, mingo@...hat.com, xeb@...l.ru,
        davem@...emloft.net, yoshfuji@...ux-ipv6.org,
        imagedong@...cent.com, edumazet@...gle.com, kafai@...com,
        talalahmad@...gle.com, keescook@...omium.org, alobakin@...me,
        flyingpeng@...cent.com, mengensun@...cent.com,
        dongli.zhang@...cle.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, benbjiang@...cent.com
Subject: Re: [PATCH RESEND net-next v5 1/4] net: sock: introduce
 sock_queue_rcv_skb_reason()

On 4/7/22 12:20 AM, menglong8.dong@...il.com wrote:
> From: Menglong Dong <imagedong@...cent.com>
> 
> In order to report the reasons of skb drops in 'sock_queue_rcv_skb()',
> introduce the function 'sock_queue_rcv_skb_reason()'.
> 
> As the return value of 'sock_queue_rcv_skb()' is used as the error code,
> we can't make it as drop reason and have to pass extra output argument.
> 'sock_queue_rcv_skb()' is used in many places, so we can't change it
> directly.
> 
> Introduce the new function 'sock_queue_rcv_skb_reason()' and make
> 'sock_queue_rcv_skb()' an inline call to it.
> 
> Reviewed-by: Hao Peng <flyingpeng@...cent.com>
> Reviewed-by: Jiang Biao <benbjiang@...cent.com>
> Signed-off-by: Menglong Dong <imagedong@...cent.com>
> ---
>  include/net/sock.h |  9 ++++++++-
>  net/core/sock.c    | 30 ++++++++++++++++++++++++------
>  2 files changed, 32 insertions(+), 7 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>