On Wed, 2012-07-18 at 14:01 -0400, Neil Horman wrote:
> I've seen several attempts recently made to do quick failover of sctp transports
> by reducing various retransmit timers and counters. While its possible to
> implement a faster failover on multihomed sctp associations, its not
> particularly robust, in that it can lead to unneeded retransmits, as well as
> false connection failures due to intermittent latency on a network.
trivia:
> diff --git a/net/sctp/associola.c b/net/sctp/associola.c
> @@ -871,6 +885,10 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
> spc_state = SCTP_ADDR_UNREACHABLE;
> break;
>
> + case SCTP_TRANSPORT_PF:
> + transport->state = SCTP_PF;
> + ulp_notify = false;
> + break;
nicer to add a newline here
> default:
> return;
> }
> @@ -878,12 +896,15 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
[]
> + if (ulp_notify) {
> + memset(&addr, 0, sizeof(struct sockaddr_storage));
> + memcpy(&addr, &transport->ipaddr,
> + transport->af_specific->sockaddr_len);
Perhaps it's better to do the memcpy then the memset of the
space left instead.
memcpy(&addr, &transport->ipaddr, transport->af_specific->sockaddr_len);
memset((char *)&addr) + transport->af_specific->sockaddr_len, 0,
sizeof(struct sockaddr_storage) - transport->af_specific->sockaddr_len);
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