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| author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2016-07-13 21:08:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-14 04:10:14 +0300 |
| commit | e7487c86dc5c4a528a7dbd9dc14f453a0de61a84 (patch) | |
| tree | fee52720c9c4621d165294c8d48dff6326468c36 /net/sctp/sm_make_chunk.c | |
| parent | 1f45f78f8e511203f03138f2ccde3d2cf90d2cbf (diff) | |
| download | linux-e7487c86dc5c4a528a7dbd9dc14f453a0de61a84.tar.xz | |
sctp: avoid identifying address family many times for a chunk
Identifying address family operations during rx path is not something
expensive but it's ugly to the eye to have it done multiple times,
specially when we already validated it during initial rx processing.
This patch takes advantage of the now shared sctp_input_cb and make the
pointer to the operations readily available.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_make_chunk.c')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 20 |
1 files changed, 4 insertions, 16 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index 1c96f4740e67..8c77b87a8565 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -108,14 +108,9 @@ static void sctp_control_set_owner_w(struct sctp_chunk *chunk) /* What was the inbound interface for this chunk? */ int sctp_chunk_iif(const struct sctp_chunk *chunk) { - struct sctp_af *af; - int iif = 0; - - af = sctp_get_af_specific(ipver2af(ip_hdr(chunk->skb)->version)); - if (af) - iif = af->skb_iif(chunk->skb); + struct sk_buff *skb = chunk->skb; - return iif; + return SCTP_INPUT_CB(skb)->af->skb_iif(skb); } /* RFC 2960 3.3.2 Initiation (INIT) (1) @@ -1600,7 +1595,6 @@ struct sctp_association *sctp_make_temp_asoc(const struct sctp_endpoint *ep, struct sctp_association *asoc; struct sk_buff *skb; sctp_scope_t scope; - struct sctp_af *af; /* Create the bare association. */ scope = sctp_scope(sctp_source(chunk)); @@ -1610,16 +1604,10 @@ struct sctp_association *sctp_make_temp_asoc(const struct sctp_endpoint *ep, asoc->temp = 1; skb = chunk->skb; /* Create an entry for the source address of the packet. */ - af = sctp_get_af_specific(ipver2af(ip_hdr(skb)->version)); - if (unlikely(!af)) - goto fail; - af->from_skb(&asoc->c.peer_addr, skb, 1); + SCTP_INPUT_CB(skb)->af->from_skb(&asoc->c.peer_addr, skb, 1); + nodata: return asoc; - -fail: - sctp_association_free(asoc); - return NULL; } /* Build a cookie representing asoc. |