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Commit b9fd6839 authored by Marcelo Ricardo Leitner's avatar Marcelo Ricardo Leitner Committed by David S. Miller
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sctp: add sctp_packet_singleton 



Factor out the code for generating singletons. It's used only once, but
helps to keep the context contained.

The const variables are to ease the reading of subsequent calls in there.

Signed-off-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 98f3697f

net/sctp/outqueue.c

+15 −7
Original line number Diff line number Diff line
@@ -776,6 +776,20 @@ void sctp_outq_uncork(struct sctp_outq *q, gfp_t gfp) 
	sctp_outq_flush(q, 0, gfp);

}



static int sctp_packet_singleton(struct sctp_transport *transport,

				 struct sctp_chunk *chunk, gfp_t gfp)

{

	const struct sctp_association *asoc = transport->asoc;

	const __u16 sport = asoc->base.bind_addr.port;

	const __u16 dport = asoc->peer.port;

	const __u32 vtag = asoc->peer.i.init_tag;

	struct sctp_packet singleton;



	sctp_packet_init(&singleton, transport, sport, dport);

	sctp_packet_config(&singleton, vtag, 0);

	sctp_packet_append_chunk(&singleton, chunk);

	return sctp_packet_transmit(&singleton, gfp);

}



/*

 * Try to flush an outqueue.
@@ -789,10 +803,7 @@ void sctp_outq_uncork(struct sctp_outq *q, gfp_t gfp) 
static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)

{

	struct sctp_packet *packet;

	struct sctp_packet singleton;

	struct sctp_association *asoc = q->asoc;

	__u16 sport = asoc->base.bind_addr.port;

	__u16 dport = asoc->peer.port;

	__u32 vtag = asoc->peer.i.init_tag;

	struct sctp_transport *transport = NULL;

	struct sctp_transport *new_transport;
@@ -905,10 +916,7 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp) 
		case SCTP_CID_INIT:

		case SCTP_CID_INIT_ACK:

		case SCTP_CID_SHUTDOWN_COMPLETE:

			sctp_packet_init(&singleton, transport, sport, dport);

			sctp_packet_config(&singleton, vtag, 0);

			sctp_packet_append_chunk(&singleton, chunk);

			error = sctp_packet_transmit(&singleton, gfp);

			error = sctp_packet_singleton(transport, chunk, gfp);

			if (error < 0) {

				asoc->base.sk->sk_err = -error;

				return;