mptcp: netlink: allow userspace-driven subflow establishment

This allows userspace to tell kernel to add a new subflow to an existing mptcp connection. Userspace provides the token to identify the mptcp-level connection that needs a change in active subflows and the local and remote addresses of the new or the to-be-removed subflow. MPTCP_PM_CMD_SUBFLOW_CREATE requires the following parameters: { token, { loc_id, family, loc_addr4 | loc_addr6 }, { family, rem_addr4 | rem_addr6, rem_port } MPTCP_PM_CMD_SUBFLOW_DESTROY requires the following parameters: { token, { family, loc_addr4 | loc_addr6, loc_port }, { family, rem_addr4 | rem_addr6, rem_port }

Florian Westphal committed 4 years ago

Commit 702c2f61 parent ecd2a774 files · +214 −0Browse files

Showing the changes to include/uapi (1 of 4 files). Show all

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include/uapi/linux/mptcp.h+3−0

@@ -57,6 +57,7 @@ enum { · 56 unmodified lines
57	57	MPTCP_PM_ATTR_SUBFLOWS, /* u32 */
58	58	MPTCP_PM_ATTR_TOKEN, /* u32 */
59	59	MPTCP_PM_ATTR_LOC_ID, /* u8 */
	60	+ MPTCP_PM_ATTR_ADDR_REMOTE, /* nested address */
60	61
61	62	__MPTCP_PM_ATTR_MAX
62	63	};
@@ -97,6 +98,8 @@ enum { · 34 unmodified lines
97	98	MPTCP_PM_CMD_SET_FLAGS,
98	99	MPTCP_PM_CMD_ANNOUNCE,
99	100	MPTCP_PM_CMD_REMOVE,
	101	+ MPTCP_PM_CMD_SUBFLOW_CREATE,
	102	+ MPTCP_PM_CMD_SUBFLOW_DESTROY,
100	103
101	104	__MPTCP_PM_CMD_AFTER_LAST
102	105	};