netdev - RE: [PATCH v2] skmsg: lose offset info in sk_psock_skb

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Message-ID: <614517f5ed44e_8d5120847@john-XPS-13-9370.notmuch>
Date:   Fri, 17 Sep 2021 15:34:29 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Liu Jian <liujian56@...wei.com>, john.fastabend@...il.com,
        daniel@...earbox.net, jakub@...udflare.com, lmb@...udflare.com,
        davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Cc:     liujian56@...wei.com
Subject: RE: [PATCH v2] skmsg: lose offset info in sk_psock_skb_ingress

Liu Jian wrote:
> If sockmap enable strparser, there are lose offset info in
> sk_psock_skb_ingress. If the length determined by parse_msg function
> is not skb->len, the skb will be converted to sk_msg multiple times,
> and userspace app will get the data multiple times.
> 
> Fix this by get the offset and length from strp_msg.
> 
> Signed-off-by: Liu Jian <liujian56@...wei.com>
> ---
> v1->v2: fix build error when disable CONFIG_BPF_STREAM_PARSER
> 

LGTM thanks.

Acked-by: John Fastabend <john.fastabend@...il.com>