From 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b Mon Sep 17 00:00:00 2001 From: Xin Long Date: Wed, 14 Mar 2018 19:05:34 +0800 Subject: sctp: add SCTP_AUTH_NO_AUTH type for AUTHENTICATION_EVENT This patch is to add SCTP_AUTH_NO_AUTH type for AUTHENTICATION_EVENT, as described in section 6.1.8 of RFC6458. SCTP_AUTH_NO_AUTH: This report indicates that the peer does not support SCTP authentication as defined in [RFC4895]. Note that the implementation is quite similar as that of SCTP_ADAPTATION_INDICATION. Signed-off-by: Xin Long Acked-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller --- net/sctp/sm_statefuns.c | 43 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-) (limited to 'net/sctp/sm_statefuns.c') diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 1e41dee70b51..cc56a67dbb4d 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -659,7 +659,7 @@ enum sctp_disposition sctp_sf_do_5_1D_ce(struct net *net, void *arg, struct sctp_cmd_seq *commands) { - struct sctp_ulpevent *ev, *ai_ev = NULL; + struct sctp_ulpevent *ev, *ai_ev = NULL, *auth_ev = NULL; struct sctp_association *new_asoc; struct sctp_init_chunk *peer_init; struct sctp_chunk *chunk = arg; @@ -820,6 +820,14 @@ enum sctp_disposition sctp_sf_do_5_1D_ce(struct net *net, goto nomem_aiev; } + if (!new_asoc->peer.auth_capable) { + auth_ev = sctp_ulpevent_make_authkey(new_asoc, 0, + SCTP_AUTH_NO_AUTH, + GFP_ATOMIC); + if (!auth_ev) + goto nomem_authev; + } + /* Add all the state machine commands now since we've created * everything. This way we don't introduce memory corruptions * during side-effect processing and correclty count established @@ -847,8 +855,14 @@ enum sctp_disposition sctp_sf_do_5_1D_ce(struct net *net, sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, SCTP_ULPEVENT(ai_ev)); + if (auth_ev) + sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, + SCTP_ULPEVENT(auth_ev)); + return SCTP_DISPOSITION_CONSUME; +nomem_authev: + sctp_ulpevent_free(ai_ev); nomem_aiev: sctp_ulpevent_free(ev); nomem_ev: @@ -953,6 +967,15 @@ enum sctp_disposition sctp_sf_do_5_1E_ca(struct net *net, SCTP_ULPEVENT(ev)); } + if (!asoc->peer.auth_capable) { + ev = sctp_ulpevent_make_authkey(asoc, 0, SCTP_AUTH_NO_AUTH, + GFP_ATOMIC); + if (!ev) + goto nomem; + sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, + SCTP_ULPEVENT(ev)); + } + return SCTP_DISPOSITION_CONSUME; nomem: return SCTP_DISPOSITION_NOMEM; @@ -1908,6 +1931,9 @@ static enum sctp_disposition sctp_sf_do_dupcook_b( if (asoc->peer.adaptation_ind) sctp_add_cmd_sf(commands, SCTP_CMD_ADAPTATION_IND, SCTP_NULL()); + if (!asoc->peer.auth_capable) + sctp_add_cmd_sf(commands, SCTP_CMD_PEER_NO_AUTH, SCTP_NULL()); + return SCTP_DISPOSITION_CONSUME; nomem: @@ -1954,7 +1980,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_d( struct sctp_cmd_seq *commands, struct sctp_association *new_asoc) { - struct sctp_ulpevent *ev = NULL, *ai_ev = NULL; + struct sctp_ulpevent *ev = NULL, *ai_ev = NULL, *auth_ev = NULL; struct sctp_chunk *repl; /* Clarification from Implementor's Guide: @@ -2001,6 +2027,14 @@ static enum sctp_disposition sctp_sf_do_dupcook_d( goto nomem; } + + if (!asoc->peer.auth_capable) { + auth_ev = sctp_ulpevent_make_authkey(asoc, 0, + SCTP_AUTH_NO_AUTH, + GFP_ATOMIC); + if (!auth_ev) + goto nomem; + } } repl = sctp_make_cookie_ack(new_asoc, chunk); @@ -2015,10 +2049,15 @@ static enum sctp_disposition sctp_sf_do_dupcook_d( if (ai_ev) sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, SCTP_ULPEVENT(ai_ev)); + if (auth_ev) + sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP, + SCTP_ULPEVENT(auth_ev)); return SCTP_DISPOSITION_CONSUME; nomem: + if (auth_ev) + sctp_ulpevent_free(auth_ev); if (ai_ev) sctp_ulpevent_free(ai_ev); if (ev) -- cgit v1.2.3