diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:26 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:44 -0700 |
| commit | 92c4f172552a37f1dbc385615b4497bd15df1d8f (patch) | |
| tree | 766b264b5cb2d0a653b78103857fc6415dd44446 /net/sctp | |
| parent | 963855a938cad73b950fb42fa5376e8ab3fd1475 (diff) | |
| download | lwn-92c4f172552a37f1dbc385615b4497bd15df1d8f.tar.gz lwn-92c4f172552a37f1dbc385615b4497bd15df1d8f.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_ecn_supported
Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/socket.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index ca369447237a..9f7f9aa50d4b 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4360,27 +4360,21 @@ out: } static int sctp_setsockopt_ecn_supported(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *params, unsigned int optlen) { - struct sctp_assoc_value params; struct sctp_association *asoc; int retval = -EINVAL; - if (optlen != sizeof(params)) - goto out; - - if (copy_from_user(¶ms, optval, optlen)) { - retval = -EFAULT; + if (optlen != sizeof(*params)) goto out; - } - asoc = sctp_id2assoc(sk, params.assoc_id); - if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC && + asoc = sctp_id2assoc(sk, params->assoc_id); + if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC && sctp_style(sk, UDP)) goto out; - sctp_sk(sk)->ep->ecn_enable = !!params.assoc_value; + sctp_sk(sk)->ep->ecn_enable = !!params->assoc_value; retval = 0; out: @@ -4635,7 +4629,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_auth_supported(sk, kopt, optlen); break; case SCTP_ECN_SUPPORTED: - retval = sctp_setsockopt_ecn_supported(sk, optval, optlen); + retval = sctp_setsockopt_ecn_supported(sk, kopt, optlen); break; case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: retval = sctp_setsockopt_pf_expose(sk, optval, optlen); |