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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-09-05 00:21:00 +0200 |
|---|---|---|
| committer | Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-09-05 00:21:00 +0200 |
| commit | f68b2e05f326971cd76c65aa91a1a41771dd7485 (patch) | |
| tree | 2940d83f3787570cc030791378ee23b89b941662 /net/sctp/associola.c | |
| parent | sctp: Don't do NAGLE delay on large writes that were fragmented small (diff) | |
| download | linux-f68b2e05f326971cd76c65aa91a1a41771dd7485.tar.xz linux-f68b2e05f326971cd76c65aa91a1a41771dd7485.zip | |
sctp: Fix SCTP_MAXSEG socket option to comply to spec.
We had a bug that we never stored the user-defined value for
MAXSEG when setting the value on an association. Thus future
PMTU events ended up re-writing the frag point and increasing
it past user limit. Additionally, when setting the option on
the socket/endpoint, we effect all current associations, which
is against spec.
Now, we store the user 'maxseg' value along with the computed
'frag_point'. We inherit 'maxseg' from the socket at association
creation and use it as an upper limit for 'frag_point' when its
set.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'net/sctp/associola.c')
| -rw-r--r-- | net/sctp/associola.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index 39c3821b7d3d..1f05b942564e 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -112,6 +112,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a asoc->cookie_life.tv_usec = (sp->assocparams.sasoc_cookie_life % 1000) * 1000; asoc->frag_point = 0; + asoc->user_frag = sp->user_frag; /* Set the association max_retrans and RTO values from the * socket values. @@ -674,7 +675,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc, "%d\n", asoc, asoc->pathmtu); peer->pmtu_pending = 0; - asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu); + asoc->frag_point = sctp_frag_point(asoc, asoc->pathmtu); /* The asoc->peer.port might not be meaningful yet, but * initialize the packet structure anyway. @@ -1330,9 +1331,8 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc) } if (pmtu) { - struct sctp_sock *sp = sctp_sk(asoc->base.sk); asoc->pathmtu = pmtu; - asoc->frag_point = sctp_frag_point(sp, pmtu); + asoc->frag_point = sctp_frag_point(asoc, pmtu); } SCTP_DEBUG_PRINTK("%s: asoc:%p, pmtu:%d, frag_point:%d\n", |