sctp: add support for RPS and RFS (486bdee0) · Commits · 戴 / test

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>

net/sctp/inqueue.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;

net/sctp/socket.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);

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