diff options
| -rw-r--r-- | include/uapi/linux/sctp.h | 1 | ||||
| -rw-r--r-- | net/sctp/socket.c | 86 |
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(¶ms, 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(¶ms, 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, ¶ms, 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; |