netdev - Re: [PATCH net-next] sctp: define sctp_packet_gso

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Date:   Thu, 14 Jun 2018 10:26:19 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     lucien.xin@...il.com
Cc:     netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        marcelo.leitner@...il.com, nhorman@...driver.com,
        eric.dumazet@...il.com
Subject: Re: [PATCH net-next] sctp: define sctp_packet_gso_append to build
 GSO frames

From: Xin Long <lucien.xin@...il.com>
Date: Thu, 14 Jun 2018 07:37:02 +0800

> Now sctp GSO uses skb_gro_receive() to append the data into head
> skb frag_list. However it actually only needs very few code from
> skb_gro_receive(). Besides, NAPI_GRO_CB has to be set while most
> of its members are not needed here.
> 
> This patch is to add sctp_packet_gso_append() to build GSO frames
> instead of skb_gro_receive(), and it would avoid many unnecessary
> checks and make the code clearer.
> 
> Note that sctp will use page frags instead of frag_list to build
> GSO frames in another patch. But it may take time, as sctp's GSO
> frames may have different size. skb_segment() can only split it
> into the frags with the same size, which would break the border
> of sctp chunks.
> 
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Applied to 'net', thanks Xin.