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....@gmail.com>
---
net/sctp/sm_make_chunk.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 06320c8..88d82ef 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -3090,8 +3090,18 @@ 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
+ } else {
+ /* 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_del_peer(asoc, &addr);
+ }
break;
case SCTP_PARAM_SET_PRIMARY:
/* ADDIP Section 4.2.4
--
2.1.0
--
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