diff options
| -rw-r--r-- | net/sctp/socket.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index ad8965835d8d..2d35c8ea2470 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3233,18 +3233,21 @@ static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, unsigned return -EINVAL; } + asoc = sctp_id2assoc(sk, params.assoc_id); + if (val) { int min_len, max_len; + __u16 datasize = asoc ? sctp_datachk_len(&asoc->stream) : + sizeof(struct sctp_data_chunk); min_len = sctp_mtu_payload(sp, SCTP_DEFAULT_MINSEGMENT, - sizeof(struct sctp_data_chunk)); - max_len = SCTP_MAX_CHUNK_LEN - sizeof(struct sctp_data_chunk); + datasize); + max_len = SCTP_MAX_CHUNK_LEN - datasize; if (val < min_len || val > max_len) return -EINVAL; } - asoc = sctp_id2assoc(sk, params.assoc_id); if (asoc) { if (val == 0) { val = asoc->pathmtu - af->net_header_len; |