mptcp: MP_FAIL suboption sending
This patch added the MP_FAIL suboption sending support.
Add a new flag named send_mp_fail in struct mptcp_subflow_context. If
this flag is set, send out MP_FAIL suboption.
Add a new member fail_seq in struct mptcp_out_options to save the data
sequence number to put into the MP_FAIL suboption.
An MP_FAIL option could be included in a RST or on the subflow-level
ACK.
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@xiaomi.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/mptcp.h b/include/net/mptcp.h
index 3236010..6026bbe 100644
--- a/include/net/mptcp.h
+++ b/include/net/mptcp.h
@@ -74,7 +74,10 @@ struct mptcp_out_options {
struct mptcp_addr_info addr;
u64 ahmac;
};
- struct mptcp_ext ext_copy;
+ struct {
+ struct mptcp_ext ext_copy;
+ u64 fail_seq;
+ };
struct {
u32 nonce;
u32 token;