diff options
Diffstat (limited to 'net/dccp/feat.c')
| -rw-r--r-- | net/dccp/feat.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/net/dccp/feat.c b/net/dccp/feat.c index 069d8ffe4c6f..0e789e2e0aa9 100644 --- a/net/dccp/feat.c +++ b/net/dccp/feat.c @@ -6,6 +6,8 @@ * * ASSUMPTIONS * ----------- + * o Feature negotiation is coordinated with connection setup (as in TCP), wild + * changes of parameters of an established connection are not supported. * o All currently known SP features have 1-byte quantities. If in the future * extensions of RFCs 4340..42 define features with item lengths larger than * one byte, a feature-specific extension of the code will be required. @@ -542,6 +544,9 @@ int dccp_feat_change_recv(struct sock *sk, u8 type, u8 feature, u8 *val, u8 len) { int rc; + /* Ignore Change requests other than during connection setup */ + if (sk->sk_state != DCCP_LISTEN && sk->sk_state != DCCP_REQUESTING) + return 0; dccp_feat_debug(type, feature, *val); /* figure out if it's SP or NN feature */ @@ -591,6 +596,9 @@ int dccp_feat_confirm_recv(struct sock *sk, u8 type, u8 feature, int found = 0; int all_confirmed = 1; + /* Ignore Confirm options other than during connection setup */ + if (sk->sk_state != DCCP_LISTEN && sk->sk_state != DCCP_REQUESTING) + return 0; dccp_feat_debug(type, feature, *val); /* locate our change request */ @@ -625,17 +633,6 @@ int dccp_feat_confirm_recv(struct sock *sk, u8 type, u8 feature, all_confirmed = 0; } - /* fix re-transmit timer */ - /* XXX gotta make sure that no option negotiation occurs during - * connection shutdown. Consider that the CLOSEREQ is sent and timer is - * on. if all options are confirmed it might kill timer which should - * remain alive until close is received. - */ - if (all_confirmed) { - dccp_pr_debug("clear feat negotiation timer %p\n", sk); - inet_csk_clear_xmit_timer(sk, ICSK_TIME_RETRANS); - } - if (!found) dccp_pr_debug("%s(%d, ...) never requested\n", dccp_feat_typename(type), feature); |