netdev - Re: [Patch bpf-next v8 03/16] net: introduce skb_send_sock() for sock

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Message-ID: <87tuoq2zo3.fsf@cloudflare.com>
Date:   Thu, 01 Apr 2021 10:10:20 +0200
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        duanxiongchun@...edance.com, wangdongdong.6@...edance.com,
        jiang.wang@...edance.com, Cong Wang <cong.wang@...edance.com>,
        John Fastabend <john.fastabend@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: Re: [Patch bpf-next v8 03/16] net: introduce skb_send_sock() for
 sock_map

On Wed, Mar 31, 2021 at 04:32 AM CEST, Cong Wang wrote:
> From: Cong Wang <cong.wang@...edance.com>
>
> We only have skb_send_sock_locked() which requires callers
> to use lock_sock(). Introduce a variant skb_send_sock()
> which locks on its own, callers do not need to lock it
> any more. This will save us from adding a ->sendmsg_locked
> for each protocol.
>
> To reuse the code, pass function pointers to __skb_send_sock()
> and build skb_send_sock() and skb_send_sock_locked() on top.
>
> Cc: John Fastabend <john.fastabend@...il.com>
> Cc: Daniel Borkmann <daniel@...earbox.net>
> Cc: Jakub Sitnicki <jakub@...udflare.com>
> Cc: Lorenz Bauer <lmb@...udflare.com>
> Signed-off-by: Cong Wang <cong.wang@...edance.com>
> ---

Reviewed-by: Jakub Sitnicki <jakub@...udflare.com>