From 0ef46e285c062cbe35d60c0adbff96f530d31c86 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 18 Sep 2008 16:27:38 -0700 Subject: [PATCH] sctp: do not enable peer features if we can't do them. Do not enable peer features like addip and auth, if they are administratively disabled localy. If the peer resports that he supports something that we don't, neither end can use it so enabling it is pointless. This solves a problem when talking to a peer that has auth and addip enabled while we do not. Found by Andrei Pelinescu-Onciul . Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/sm_make_chunk.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index e8ca4e54981f..fe94f42fa068 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -1886,11 +1886,13 @@ static void sctp_process_ext_param(struct sctp_association *asoc, /* if the peer reports AUTH, assume that he * supports AUTH. */ - asoc->peer.auth_capable = 1; + if (sctp_auth_enable) + asoc->peer.auth_capable = 1; break; case SCTP_CID_ASCONF: case SCTP_CID_ASCONF_ACK: - asoc->peer.asconf_capable = 1; + if (sctp_addip_enable) + asoc->peer.asconf_capable = 1; break; default: break; @@ -2460,6 +2462,9 @@ static int sctp_process_param(struct sctp_association *asoc, break; case SCTP_PARAM_SET_PRIMARY: + if (!sctp_addip_enable) + goto fall_through; + addr_param = param.v + sizeof(sctp_addip_param_t); af = sctp_get_af_specific(param_type2af(param.p->type)); -- GitLab