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author | Xin Long <lucien.xin@gmail.com> | 2018-06-14 07:37:02 +0800 |
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committer | David S. Miller <davem@davemloft.net> | 2018-06-14 10:25:53 -0700 |
commit | 995191220056300c51ed870a5d5321f91f3eef89 (patch) | |
tree | c11f199c0065aabc72a112e724a7163deed8a72c /include | |
parent | 60d061e3470357b902c74f811772b2effc9ec5a0 (diff) | |
download | linux-stable-995191220056300c51ed870a5d5321f91f3eef89.tar.gz linux-stable-995191220056300c51ed870a5d5321f91f3eef89.tar.bz2 linux-stable-995191220056300c51ed870a5d5321f91f3eef89.zip |
sctp: define sctp_packet_gso_append to build GSO frames
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@gmail.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r-- | include/net/sctp/structs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index ebf809eed33a..dbe1b911a24d 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1133,6 +1133,11 @@ struct sctp_input_cb { }; #define SCTP_INPUT_CB(__skb) ((struct sctp_input_cb *)&((__skb)->cb[0])) +struct sctp_output_cb { + struct sk_buff *last; +}; +#define SCTP_OUTPUT_CB(__skb) ((struct sctp_output_cb *)&((__skb)->cb[0])) + static inline const struct sk_buff *sctp_gso_headskb(const struct sk_buff *skb) { const struct sctp_chunk *chunk = SCTP_INPUT_CB(skb)->chunk; |