On Tue, Apr 12, 2016 at 2:11 PM, Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx> wrote: > 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@xxxxxxxxx> > --- > net/sctp/inqueue.c | 3 +++ > net/sctp/socket.c | 3 +++ > 2 files changed, 6 insertions(+) > > diff --git a/net/sctp/inqueue.c b/net/sctp/inqueue.c > index 7e8a16c77039e1b70ef89f3e862dbb332bcc614f..b335ffcef0b901b0e71bf0843057dbf5877da31b 100644 > --- a/net/sctp/inqueue.c > +++ b/net/sctp/inqueue.c > @@ -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; > diff --git a/net/sctp/socket.c b/net/sctp/socket.c > index 878d28eda1a68dc639d7b9f3f663d7518f21bb32..36697f85ce48be39f41ddedd9f53369c7f9e28d8 100644 > --- a/net/sctp/socket.c > +++ b/net/sctp/socket.c > @@ -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); > HI Marcelo, sock_rps_record_flow should probably be in sctp_poll also (like it is in tcp_poll). Thanks, Tom > -- > 2.5.0 > -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
