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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2007-09-16 19:35:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:51:33 -0700 |
| commit | 6b2f9cb64db2d2460da17900bf54266030cc24f1 (patch) | |
| tree | 1aa95cba41e7dc9071fe1773a567822b60d71f35 /net | |
| parent | 65b07e5d0d09c77e98050b5f0146ead29e5add32 (diff) | |
| download | linux-6b2f9cb64db2d2460da17900bf54266030cc24f1.tar.gz linux-6b2f9cb64db2d2460da17900bf54266030cc24f1.tar.bz2 linux-6b2f9cb64db2d2460da17900bf54266030cc24f1.zip | |
[SCTP]: Tie ADD-IP and AUTH functionality as required by spec.
ADD-IP spec requires AUTH. It is, in fact, dangerous without AUTH.
So, disable ADD-IP functionality if the peer claims to support
ADD-IP, but not AUTH.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index fa2ba543183d..f983a369d4e2 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -1851,7 +1851,8 @@ static void sctp_process_ext_param(struct sctp_association *asoc, break; case SCTP_CID_ASCONF: case SCTP_CID_ASCONF_ACK: - /* don't need to do anything for ASCONF */ + asoc->peer.addip_capable = 1; + break; default: break; } @@ -2137,6 +2138,16 @@ int sctp_process_init(struct sctp_association *asoc, sctp_cid_t cid, !asoc->peer.peer_hmacs)) asoc->peer.auth_capable = 0; + + /* If the peer claims support for ADD-IP without support + * for AUTH, disable support for ADD-IP. + */ + if (asoc->peer.addip_capable && !asoc->peer.auth_capable) { + asoc->peer.addip_disabled_mask |= (SCTP_PARAM_ADD_IP | + SCTP_PARAM_DEL_IP | + SCTP_PARAM_SET_PRIMARY); + } + /* Walk list of transports, removing transports in the UNKNOWN state. */ list_for_each_safe(pos, temp, &asoc->peer.transport_addr_list) { transport = list_entry(pos, struct sctp_transport, transports); |