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sctp: add support for RPS and RFS 

This patch adds what's missing to properly support RPS and RFS on SCTP,
as some of it is already implemented in common calls.

Having support for RPS and RFS allows better scaling specially because
not all NICs support hashing SCTP headers.

Save the hash right when we dequeue a skb from inqueue so we do it only
once per skb instead of per chunk. New sockets will then inherit the
hash through sctp_copy_sock().

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcelo Ricardo Leitner 2016-04-12 18:11:31 -03:00 committed by David S. Miller
parent d21fd63ea3
commit 486bdee013
2 changed files with 6 additions and 0 deletions
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3
net/sctp/inqueue.c
View File

@ -163,6 +163,9 @@ struct sctp_chunk *sctp_inq_pop(struct sctp_inq *queue)
chunk->singleton = 1;
ch = (sctp_chunkhdr_t *) chunk->skb->data;
chunk->data_accepted = 0;
if (chunk->asoc)
sock_rps_save_rxhash(chunk->asoc->base.sk, chunk->skb);
}
chunk->chunk_hdr = ch;

3
net/sctp/socket.c
View File

@ -6430,6 +6430,8 @@ unsigned int sctp_poll(struct file *file, struct socket *sock, poll_table *wait)
poll_wait(file, sk_sleep(sk), wait);
sock_rps_record_flow(sk);
/* A TCP-style listening socket becomes readable when the accept queue
* is not empty.
*/
@ -7186,6 +7188,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
newsk->sk_lingertime = sk->sk_lingertime;
newsk->sk_rcvtimeo = sk->sk_rcvtimeo;
newsk->sk_sndtimeo = sk->sk_sndtimeo;
newsk->sk_rxhash = sk->sk_rxhash;
newinet = inet_sk(newsk);