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| author | lucien <lucien.xin@gmail.com> | 2015-08-28 11:45:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-29 07:25:42 +0200 |
| commit | 7c5a9461812b21e1a1b7a09a83e97530b8867459 (patch) | |
| tree | 18a28c739876a4854b57379bbd2b3cf7b5ffcfec /net/sctp | |
| parent | netlink: mmap: fix lookup frame position (diff) | |
| download | linux-7c5a9461812b21e1a1b7a09a83e97530b8867459.tar.xz linux-7c5a9461812b21e1a1b7a09a83e97530b8867459.zip | |
sctp: ASCONF-ACK with Unresolvable Address should be sent
RFC 5061:
This is an opaque integer assigned by the sender to identify each
request parameter. The receiver of the ASCONF Chunk will copy this
32-bit value into the ASCONF Response Correlation ID field of the
ASCONF-ACK response parameter. The sender of the ASCONF can use this
same value in the ASCONF-ACK to find which request the response is
for. Note that the receiver MUST NOT change this 32-bit value.
Address Parameter: TLV
This field contains an IPv4 or IPv6 address parameter, as described
in Section 3.3.2.1 of [RFC4960].
ASCONF chunk with Error Cause Indication Parameter (Unresolvable Address)
should be sent if the Delete IP Address is not part of the association.
Endpoint A Endpoint B
(ESTABLISHED) (ESTABLISHED)
ASCONF ----------------->
(Delete IP Address)
<----------------- ASCONF-ACK
(Unresolvable Address)
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index a655ddc3f353..7954c52e1794 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3090,8 +3090,19 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc, sctp_assoc_set_primary(asoc, asconf->transport); sctp_assoc_del_nonprimary_peers(asoc, asconf->transport); - } else - sctp_assoc_del_peer(asoc, &addr); + return SCTP_ERROR_NO_ERROR; + } + + /* If the address is not part of the association, the + * ASCONF-ACK with Error Cause Indication Parameter + * which including cause of Unresolvable Address should + * be sent. + */ + peer = sctp_assoc_lookup_paddr(asoc, &addr); + if (!peer) + return SCTP_ERROR_DNS_FAILED; + + sctp_assoc_rm_peer(asoc, peer); break; case SCTP_PARAM_SET_PRIMARY: /* ADDIP Section 4.2.4 |