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sctp: Make sysctl tunables per net

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Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
2012-08-07 07:29:57 +00:00
committed by David S. Miller
parent f53b5b097e
commit e1fc3b14f9
14 changed files with 430 additions and 419 deletions
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15
net/sctp/transport.c
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@@ -77,7 +77,7 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
* given destination transport address, set RTO to the protocol
* parameter 'RTO.Initial'.
*/
peer->rto = msecs_to_jiffies(sctp_rto_initial);
peer->rto = msecs_to_jiffies(net->sctp.rto_initial);
peer->last_time_heard = jiffies;
peer->last_time_ecne_reduced = jiffies;
@@ -87,8 +87,8 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
SPP_SACKDELAY_ENABLE;
/* Initialize the default path max_retrans. */
peer->pathmaxrxt = sctp_max_retrans_path;
peer->pf_retrans = sctp_pf_retrans;
peer->pathmaxrxt = net->sctp.max_retrans_path;
peer->pf_retrans = net->sctp.pf_retrans;
INIT_LIST_HEAD(&peer->transmitted);
INIT_LIST_HEAD(&peer->send_ready);
@@ -318,6 +318,7 @@ void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)
SCTP_ASSERT(tp->rto_pending, "rto_pending not set", return);
if (tp->rttvar || tp->srtt) {
struct net *net = sock_net(tp->asoc->base.sk);
/* 6.3.1 C3) When a new RTT measurement R' is made, set
* RTTVAR <- (1 - RTO.Beta) * RTTVAR + RTO.Beta * |SRTT - R'|
* SRTT <- (1 - RTO.Alpha) * SRTT + RTO.Alpha * R'
@@ -329,10 +330,10 @@ void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)
* For example, assuming the default value of RTO.Alpha of
* 1/8, rto_alpha would be expressed as 3.
*/
tp->rttvar = tp->rttvar - (tp->rttvar >> sctp_rto_beta)
+ ((abs(tp->srtt - rtt)) >> sctp_rto_beta);
tp->srtt = tp->srtt - (tp->srtt >> sctp_rto_alpha)
+ (rtt >> sctp_rto_alpha);
tp->rttvar = tp->rttvar - (tp->rttvar >> net->sctp.rto_beta)
+ ((abs(tp->srtt - rtt)) >> net->sctp.rto_beta);
tp->srtt = tp->srtt - (tp->srtt >> net->sctp.rto_alpha)
+ (rtt >> net->sctp.rto_alpha);
} else {
/* 6.3.1 C2) When the first RTT measurement R is made, set
* SRTT <- R, RTTVAR <- R/2.