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sctp: add SCTP_FUTURE_ASOC and SCTP_CURRENT_ASSOC for SCTP_STREAM_SCHEDULER sockopt

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Check with SCTP_ALL_ASSOC instead in sctp_setsockopt_scheduler and
check with SCTP_FUTURE_ASSOC instead in sctp_getsockopt_scheduler,
it's compatible with 0.

SCTP_CURRENT_ASSOC is supported for SCTP_STREAM_SCHEDULER in this
patch. It also adds default_ss in sctp_sock to support
SCTP_FUTURE_ASSOC.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2019-01-28 15:08:46 +08:00 committed by David S. Miller
parent d251f05e3b
commit 7efba10d6b
3 changed files with 34 additions and 14 deletions
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2
include/net/sctp/structs.h
View File

@ -211,6 +211,8 @@ struct sctp_sock {
/* Flags controlling Heartbeat, SACK delay, and Path MTU Discovery. */
__u32 param_flags;
__u32 default_ss;
struct sctp_rtoinfo rtoinfo;
struct sctp_paddrparams paddrparam;
struct sctp_assocparams assocparams;

2
net/sctp/outqueue.c
View File

@ -212,7 +212,7 @@ void sctp_outq_init(struct sctp_association *asoc, struct sctp_outq *q)
INIT_LIST_HEAD(&q->retransmit);
INIT_LIST_HEAD(&q->sacked);
INIT_LIST_HEAD(&q->abandoned);
sctp_sched_set_sched(asoc, SCTP_SS_DEFAULT);
sctp_sched_set_sched(asoc, sctp_sk(asoc->base.sk)->default_ss);
}
/* Free the outqueue structure and any related pending chunks.

44
net/sctp/socket.c
View File

@ -4352,29 +4352,44 @@ static int sctp_setsockopt_scheduler(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_association *asoc;
struct sctp_assoc_value params;
int retval = -EINVAL;
int retval = 0;
if (optlen < sizeof(params))
goto out;
return -EINVAL;
optlen = sizeof(params);
if (copy_from_user(&params, optval, optlen)) {
retval = -EFAULT;
goto out;
}
if (copy_from_user(&params, optval, optlen))
return -EFAULT;
if (params.assoc_value > SCTP_SS_MAX)
goto out;
return -EINVAL;
asoc = sctp_id2assoc(sk, params.assoc_id);
if (!asoc)
goto out;
if (!asoc && params.assoc_id > SCTP_ALL_ASSOC &&
sctp_style(sk, UDP))
return -EINVAL;
retval = sctp_sched_set_sched(asoc, params.assoc_value);
if (asoc)
return sctp_sched_set_sched(asoc, params.assoc_value);
if (params.assoc_id == SCTP_FUTURE_ASSOC ||
params.assoc_id == SCTP_ALL_ASSOC)
sp->default_ss = params.assoc_value;
if (params.assoc_id == SCTP_CURRENT_ASSOC ||
params.assoc_id == SCTP_ALL_ASSOC) {
list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
int ret = sctp_sched_set_sched(asoc,
params.assoc_value);
if (ret && !retval)
retval = ret;
}
}
out:
return retval;
}
@ -5005,6 +5020,7 @@ static int sctp_init_sock(struct sock *sk)
sp->param_flags = SPP_HB_ENABLE |
SPP_PMTUD_ENABLE |
SPP_SACKDELAY_ENABLE;
sp->default_ss = SCTP_SS_DEFAULT;
/* If enabled no SCTP message fragmentation will be performed.
* Configure through SCTP_DISABLE_FRAGMENTS socket option.
@ -7572,12 +7588,14 @@ static int sctp_getsockopt_scheduler(struct sock *sk, int len,
goto out;
asoc = sctp_id2assoc(sk, params.assoc_id);
if (!asoc) {
if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
sctp_style(sk, UDP)) {
retval = -EINVAL;
goto out;
}
params.assoc_value = sctp_sched_get_sched(asoc);
params.assoc_value = asoc ? sctp_sched_get_sched(asoc)
: sctp_sk(sk)->default_ss;
if (put_user(len, optlen))
goto out;