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sctp: add SCTP_FUTURE_ASSOC for SCTP_PEER_ADDR_THLDS sockopt

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Check with SCTP_FUTURE_ASSOC instead in
sctp_set/getsockopt_paddr_thresholds, it's compatible with 0.

It also adds pf_retrans 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 15:08:29 +08:00 committed by David S. Miller
parent 48c072174d
commit 8add543e36
3 changed files with 43 additions and 19 deletions
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2
include/net/sctp/structs.h
View File

@ -199,6 +199,8 @@ struct sctp_sock {
__u32 flowlabel;
__u8 dscp;
int pf_retrans;
/* The initial Path MTU to use for new associations. */
__u32 pathmtu;

2
net/sctp/associola.c
View File

@ -101,7 +101,7 @@ static struct sctp_association *sctp_association_init(
* socket values.
*/
asoc->max_retrans = sp->assocparams.sasoc_asocmaxrxt;
asoc->pf_retrans = net->sctp.pf_retrans;
asoc->pf_retrans = sp->pf_retrans;
asoc->rto_initial = msecs_to_jiffies(sp->rtoinfo.srto_initial);
asoc->rto_max = msecs_to_jiffies(sp->rtoinfo.srto_max);

58
net/sctp/socket.c
View File

@ -3888,11 +3888,25 @@ static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
sizeof(struct sctp_paddrthlds)))
return -EFAULT;
if (sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
asoc = sctp_id2assoc(sk, val.spt_assoc_id);
if (!asoc)
if (!sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
trans = sctp_addr_id2transport(sk, &val.spt_address,
val.spt_assoc_id);
if (!trans)
return -ENOENT;
if (val.spt_pathmaxrxt)
trans->pathmaxrxt = val.spt_pathmaxrxt;
trans->pf_retrans = val.spt_pathpfthld;
return 0;
}
asoc = sctp_id2assoc(sk, val.spt_assoc_id);
if (!asoc && val.spt_assoc_id != SCTP_FUTURE_ASSOC &&
sctp_style(sk, UDP))
return -EINVAL;
if (asoc) {
list_for_each_entry(trans, &asoc->peer.transport_addr_list,
transports) {
if (val.spt_pathmaxrxt)
@ -3904,14 +3918,11 @@ static int sctp_setsockopt_paddr_thresholds(struct sock *sk,
asoc->pathmaxrxt = val.spt_pathmaxrxt;
asoc->pf_retrans = val.spt_pathpfthld;
} else {
trans = sctp_addr_id2transport(sk, &val.spt_address,
val.spt_assoc_id);
if (!trans)
return -ENOENT;
struct sctp_sock *sp = sctp_sk(sk);
if (val.spt_pathmaxrxt)
trans->pathmaxrxt = val.spt_pathmaxrxt;
trans->pf_retrans = val.spt_pathpfthld;
sp->pathmaxrxt = val.spt_pathmaxrxt;
sp->pf_retrans = val.spt_pathpfthld;
}
return 0;
@ -4781,6 +4792,7 @@ static int sctp_init_sock(struct sock *sk)
*/
sp->hbinterval = net->sctp.hb_interval;
sp->pathmaxrxt = net->sctp.max_retrans_path;
sp->pf_retrans = net->sctp.pf_retrans;
sp->pathmtu = 0; /* allow default discovery */
sp->sackdelay = net->sctp.sack_timeout;
sp->sackfreq = 2;
@ -6917,14 +6929,7 @@ static int sctp_getsockopt_paddr_thresholds(struct sock *sk,
if (copy_from_user(&val, (struct sctp_paddrthlds __user *)optval, len))
return -EFAULT;
if (sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
asoc = sctp_id2assoc(sk, val.spt_assoc_id);
if (!asoc)
return -ENOENT;
val.spt_pathpfthld = asoc->pf_retrans;
val.spt_pathmaxrxt = asoc->pathmaxrxt;
} else {
if (!sctp_is_any(sk, (const union sctp_addr *)&val.spt_address)) {
trans = sctp_addr_id2transport(sk, &val.spt_address,
val.spt_assoc_id);
if (!trans)
@ -6932,6 +6937,23 @@ static int sctp_getsockopt_paddr_thresholds(struct sock *sk,
val.spt_pathmaxrxt = trans->pathmaxrxt;
val.spt_pathpfthld = trans->pf_retrans;
return 0;
}
asoc = sctp_id2assoc(sk, val.spt_assoc_id);
if (!asoc && val.spt_assoc_id != SCTP_FUTURE_ASSOC &&
sctp_style(sk, UDP))
return -EINVAL;
if (asoc) {
val.spt_pathpfthld = asoc->pf_retrans;
val.spt_pathmaxrxt = asoc->pathmaxrxt;
} else {
struct sctp_sock *sp = sctp_sk(sk);
val.spt_pathpfthld = sp->pf_retrans;
val.spt_pathmaxrxt = sp->pathmaxrxt;
}
if (put_user(len, optlen) || copy_to_user(optval, &val, len))