diff options
| -rw-r--r-- | include/net/sctp/user.h | 2 | ||||
| -rw-r--r-- | net/sctp/socket.c | 35 |
2 files changed, 37 insertions, 0 deletions
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h index f205b10f0ab9..b259fc5798fb 100644 --- a/include/net/sctp/user.h +++ b/include/net/sctp/user.h @@ -118,6 +118,8 @@ enum sctp_optname { #define SCTP_PEER_AUTH_CHUNKS SCTP_PEER_AUTH_CHUNKS SCTP_LOCAL_AUTH_CHUNKS, /* Read only */ #define SCTP_LOCAL_AUTH_CHUNKS SCTP_LOCAL_AUTH_CHUNKS + SCTP_GET_ASSOC_NUMBER, /* Read only */ +#define SCTP_GET_ASSOC_NUMBER SCTP_GET_ASSOC_NUMBER /* Internal Socket Options. Some of the sctp library functions are diff --git a/net/sctp/socket.c b/net/sctp/socket.c index e432927310c9..9f5fe23773a9 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -5460,6 +5460,38 @@ num: return 0; } +/* + * 8.2.5. Get the Current Number of Associations (SCTP_GET_ASSOC_NUMBER) + * This option gets the current number of associations that are attached + * to a one-to-many style socket. The option value is an uint32_t. + */ +static int sctp_getsockopt_assoc_number(struct sock *sk, int len, + char __user *optval, int __user *optlen) +{ + struct sctp_sock *sp = sctp_sk(sk); + struct sctp_association *asoc; + u32 val = 0; + + if (sctp_style(sk, TCP)) + return -EOPNOTSUPP; + + if (len < sizeof(u32)) + return -EINVAL; + + len = sizeof(u32); + + list_for_each_entry(asoc, &(sp->ep->asocs), asocs) { + val++; + } + + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &val, len)) + return -EFAULT; + + return 0; +} + SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { @@ -5602,6 +5634,9 @@ SCTP_STATIC int sctp_getsockopt(struct sock *sk, int level, int optname, retval = sctp_getsockopt_local_auth_chunks(sk, len, optval, optlen); break; + case SCTP_GET_ASSOC_NUMBER: + retval = sctp_getsockopt_assoc_number(sk, len, optval, optlen); + break; default: retval = -ENOPROTOOPT; break; |