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sctp: use SCTP_FUTURE_ASSOC and add SCTP_CURRENT_ASSOC for SCTP_ENABLE_STREAM_RESET sockopt 

Check with SCTP_ALL_ASSOC instead in sctp_setsockopt_enable_strreset and
check with SCTP_FUTURE_ASSOC instead in sctp_getsockopt_enable_strreset,
it's compatible with 0.

SCTP_CURRENT_ASSOC is supported for SCTP_ENABLE_STREAM_RESET in this patch.
It also adjusts some code to keep a same check form as other functions.

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 15:08:44 +08:00 committed by David S. Miller
parent 3a583059d1
commit 99a62135e1
1 changed files with 20 additions and 13 deletions
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33
net/sctp/socket.c
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@ -4222,6 +4222,7 @@ static int sctp_setsockopt_enable_strreset(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_assoc_value params;
struct sctp_association *asoc;
int retval = -EINVAL;
@ -4238,17 +4239,25 @@ static int sctp_setsockopt_enable_strreset(struct sock *sk,
goto out;
asoc = sctp_id2assoc(sk, params.assoc_id);
if (!asoc && params.assoc_id > SCTP_ALL_ASSOC &&
sctp_style(sk, UDP))
goto out;
retval = 0;
if (asoc) {
asoc->strreset_enable = params.assoc_value;
} else if (!params.assoc_id) {
struct sctp_sock *sp = sctp_sk(sk);
sp->ep->strreset_enable = params.assoc_value;
} else {
goto out;
}
retval = 0;
if (params.assoc_id == SCTP_FUTURE_ASSOC ||
params.assoc_id == SCTP_ALL_ASSOC)
ep->strreset_enable = params.assoc_value;
if (params.assoc_id == SCTP_CURRENT_ASSOC ||
params.assoc_id == SCTP_ALL_ASSOC)
list_for_each_entry(asoc, &ep->asocs, asocs)
asoc->strreset_enable = params.assoc_value;
out:
return retval;
@ -7509,17 +7518,15 @@ static int sctp_getsockopt_enable_strreset(struct sock *sk, int len,
goto out;
asoc = sctp_id2assoc(sk, params.assoc_id);
if (asoc) {
params.assoc_value = asoc->strreset_enable;
} else if (!params.assoc_id) {
struct sctp_sock *sp = sctp_sk(sk);
params.assoc_value = sp->ep->strreset_enable;
} else {
if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
sctp_style(sk, UDP)) {
retval = -EINVAL;
goto out;
}
params.assoc_value = asoc ? asoc->strreset_enable
: sctp_sk(sk)->ep->strreset_enable;
if (put_user(len, optlen))
goto out;