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[SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT 

The ADD-IP "Set Primary IP Address" parameter is allowed in the
INIT/INIT-ACK exchange.  Allow processing of this parameter during
the INIT/INIT-ACK.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2007-12-20 14:10:00 -08:00 committed by David S. Miller
parent 42e30bf346
commit d6de309759
2 changed files with 28 additions and 0 deletions
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1
include/net/sctp/structs.h
View File

@ -451,6 +451,7 @@ union sctp_params {
struct sctp_random_param *random;
struct sctp_chunks_param *chunks;
struct sctp_hmac_algo_param *hmac_algo;
struct sctp_addip_param *addip;
};
/* RFC 2960. Section 3.3.5 Heartbeat.

27
net/sctp/sm_make_chunk.c
View File

@ -1969,6 +1969,11 @@ static sctp_ierror_t sctp_verify_param(const struct sctp_association *asoc,
case SCTP_PARAM_SUPPORTED_EXT:
break;
case SCTP_PARAM_SET_PRIMARY:
if (sctp_addip_enable)
break;
goto fallthrough;
case SCTP_PARAM_HOST_NAME_ADDRESS:
/* Tell the peer, we won't support this param. */
sctp_process_hn_param(asoc, param, chunk, err_chunk);
@ -2286,6 +2291,8 @@ static int sctp_process_param(struct sctp_association *asoc,
sctp_scope_t scope;
time_t stale;
struct sctp_af *af;
union sctp_addr_param *addr_param;
struct sctp_transport *t;
/* We maintain all INIT parameters in network byte order all the
* time. This allows us to not worry about whether the parameters
@ -2376,6 +2383,26 @@ static int sctp_process_param(struct sctp_association *asoc,
asoc->peer.adaptation_ind = param.aind->adaptation_ind;
break;
case SCTP_PARAM_SET_PRIMARY:
addr_param = param.v + sizeof(sctp_addip_param_t);
af = sctp_get_af_specific(param_type2af(param.p->type));
af->from_addr_param(&addr, addr_param,
htons(asoc->peer.port), 0);
/* if the address is invalid, we can't process it.
* XXX: see spec for what to do.
*/
if (!af->addr_valid(&addr, NULL, NULL))
break;
t = sctp_assoc_lookup_paddr(asoc, &addr);
if (!t)
break;
sctp_assoc_set_primary(asoc, t);
break;
case SCTP_PARAM_SUPPORTED_EXT:
sctp_process_ext_param(asoc, param);
break;