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| author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2018-04-26 16:59:02 -0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-27 14:35:24 -0400 |
| commit | 38687b56c51b535024d46d6b5375163a6a40a196 (patch) | |
| tree | 56ef91a153676cf598653f135975fabb58694018 /net/sctp | |
| parent | 439ef0309cf4b743d76edc2abeca72b27ee1d996 (diff) | |
| download | linux-stable-38687b56c51b535024d46d6b5375163a6a40a196.tar.gz linux-stable-38687b56c51b535024d46d6b5375163a6a40a196.tar.bz2 linux-stable-38687b56c51b535024d46d6b5375163a6a40a196.zip | |
sctp: allow unsetting sockopt MAXSEG
RFC 6458 Section 8.1.16 says that setting MAXSEG as 0 means that the user
is not limiting it, and not that it should set to the *current* maximum,
as we are doing.
This patch thus allow setting it as 0, effectively removing the user
limit.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/socket.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 2d35c8ea2470..1b4593b842b0 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3211,7 +3211,6 @@ static int sctp_setsockopt_mappedv4(struct sock *sk, char __user *optval, unsign static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, unsigned int optlen) { struct sctp_sock *sp = sctp_sk(sk); - struct sctp_af *af = sp->pf->af; struct sctp_assoc_value params; struct sctp_association *asoc; int val; @@ -3249,12 +3248,6 @@ static int sctp_setsockopt_maxseg(struct sock *sk, char __user *optval, unsigned } if (asoc) { - if (val == 0) { - val = asoc->pathmtu - af->net_header_len; - val -= af->ip_options_len(sk); - val -= sizeof(struct sctphdr) + - sctp_datachk_len(&asoc->stream); - } asoc->user_frag = val; sctp_assoc_update_frag_point(asoc); } else { |