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-rw-r--r--include/uapi/linux/sctp.h1
-rw-r--r--net/sctp/socket.c86
2 files changed, 87 insertions, 0 deletions
diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h
index 9b9b82debc0d..62527aca8477 100644
--- a/include/uapi/linux/sctp.h
+++ b/include/uapi/linux/sctp.h
@@ -135,6 +135,7 @@ typedef __s32 sctp_assoc_t;
#define SCTP_SENDMSG_CONNECT 126
#define SCTP_EVENT 127
#define SCTP_ASCONF_SUPPORTED 128
+#define SCTP_AUTH_SUPPORTED 129
/* PR-SCTP policies */
#define SCTP_PR_SCTP_NONE 0x0000
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index dcde8d92c568..82bc25223cfe 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4520,6 +4520,46 @@ out:
return retval;
}
+static int sctp_setsockopt_auth_supported(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ struct sctp_endpoint *ep;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(params))
+ goto out;
+
+ if (copy_from_user(&params, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
+ sctp_style(sk, UDP))
+ goto out;
+
+ ep = sctp_sk(sk)->ep;
+ if (params.assoc_value) {
+ retval = sctp_auth_init(ep, GFP_KERNEL);
+ if (retval)
+ goto out;
+ if (ep->asconf_enable) {
+ sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF);
+ sctp_auth_ep_add_chunkid(ep, SCTP_CID_ASCONF_ACK);
+ }
+ }
+
+ ep->auth_enable = !!params.assoc_value;
+ retval = 0;
+
+out:
+ return retval;
+}
+
/* API 6.2 setsockopt(), getsockopt()
*
* Applications use setsockopt() and getsockopt() to set or retrieve
@@ -4723,6 +4763,9 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
case SCTP_ASCONF_SUPPORTED:
retval = sctp_setsockopt_asconf_supported(sk, optval, optlen);
break;
+ case SCTP_AUTH_SUPPORTED:
+ retval = sctp_setsockopt_auth_supported(sk, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;
@@ -7746,6 +7789,45 @@ out:
return retval;
}
+static int sctp_getsockopt_auth_supported(struct sock *sk, int len,
+ char __user *optval,
+ int __user *optlen)
+{
+ struct sctp_assoc_value params;
+ struct sctp_association *asoc;
+ int retval = -EFAULT;
+
+ if (len < sizeof(params)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ len = sizeof(params);
+ if (copy_from_user(&params, optval, len))
+ goto out;
+
+ asoc = sctp_id2assoc(sk, params.assoc_id);
+ if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC &&
+ sctp_style(sk, UDP)) {
+ retval = -EINVAL;
+ goto out;
+ }
+
+ params.assoc_value = asoc ? asoc->peer.auth_capable
+ : sctp_sk(sk)->ep->auth_enable;
+
+ if (put_user(len, optlen))
+ goto out;
+
+ if (copy_to_user(optval, &params, len))
+ goto out;
+
+ retval = 0;
+
+out:
+ return retval;
+}
+
static int sctp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
@@ -7951,6 +8033,10 @@ static int sctp_getsockopt(struct sock *sk, int level, int optname,
retval = sctp_getsockopt_asconf_supported(sk, len, optval,
optlen);
break;
+ case SCTP_AUTH_SUPPORTED:
+ retval = sctp_getsockopt_auth_supported(sk, len, optval,
+ optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;