mptcp: add allow_join_id0 in mptcp_out_options

This patch defined a new flag MPTCP_CAP_DENY_JOIN_ID0 for the third bit,
labeled "C" of the MP_CAPABLE option.

Add a new flag allow_join_id0 in struct mptcp_out_options. If this flag is
set, send out the MP_CAPABLE option with the flag MPTCP_CAP_DENY_JOIN_ID0.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang
2021-06-22 12:25:19 -07:00
committed by David S. Miller
parent d2f77960e5
commit bab6b88e05
4 changed files with 13 additions and 3 deletions

View File

@@ -79,8 +79,9 @@
#define MPTCP_VERSION_MASK (0x0F)
#define MPTCP_CAP_CHECKSUM_REQD BIT(7)
#define MPTCP_CAP_EXTENSIBILITY BIT(6)
#define MPTCP_CAP_DENY_JOIN_ID0 BIT(5)
#define MPTCP_CAP_HMAC_SHA256 BIT(0)
#define MPTCP_CAP_FLAG_MASK (0x3F)
#define MPTCP_CAP_FLAG_MASK (0x1F)
/* MPTCP DSS flags */
#define MPTCP_DSS_DATA_FIN BIT(4)
@@ -350,7 +351,8 @@ struct mptcp_subflow_request_sock {
u16 mp_capable : 1,
mp_join : 1,
backup : 1,
csum_reqd : 1;
csum_reqd : 1,
allow_join_id0 : 1;
u8 local_id;
u8 remote_id;
u64 local_key;