This patch series from the MPTCP tree contains enhancements and
associated tests for the ADD_ADDR ("add address") MPTCP option. This
option allows already-connected MPTCP peers to share additional IP
addresses with each other, which can then be used to create additional
subflows within those MPTCP connections.Patches 1 & 2 remove duplicated data in the per-connection path manager structure. Patches 3-6 initiate additional subflows when an address is added using the netlink path manager interface and improve ADD_ADDR signaling reliability, subject to configured limits. Self tests are also updated. Patches 7-15 add new support for optional port numbers in ADD_ADDR. This includes creating an additional in-kernel TCP listening socket for the requested port number, validating the port number when processing incoming subflow connections, including the port number in netlink interfaces, and adding some new MIBs. New self test cases are added for subflows connecting with alternate port numbers. v2: Address review comments for patch 1 (drop unnecessary READ_ONCE() under lock). Drop patch 16, which will be submitted later. Geliang Tang (15): mptcp: use WRITE_ONCE for the pernet *_max mptcp: drop *_max fields in mptcp_pm_data mptcp: create subflow or signal addr for newly added address mptcp: send ack for every add_addr selftests: mptcp: use minus values for removing address numbers selftests: mptcp: add testcases for newly added addresses mptcp: create the listening socket for new port mptcp: drop unused skb in subflow_token_join_request mptcp: add a new helper subflow_req_create_thmac mptcp: add port number check for MP_JOIN mptcp: enable use_port when invoke addresses_equal mptcp: deal with MPTCP_PM_ADDR_ATTR_PORT in PM netlink selftests: mptcp: add port argument for pm_nl_ctl mptcp: add the mibs for ADD_ADDR with port selftests: mptcp: add testcases for ADD_ADDR with port net/mptcp/mib.c | 6 + net/mptcp/mib.h | 6 + net/mptcp/mptcp_diag.c | 6 +- net/mptcp/options.c | 4 + net/mptcp/pm.c | 12 +- net/mptcp/pm_netlink.c | 291 +++++++++++++++--- net/mptcp/protocol.c | 2 +- net/mptcp/protocol.h | 12 +- net/mptcp/subflow.c | 79 ++++- .../testing/selftests/net/mptcp/mptcp_join.sh | 261 +++++++++++++++- tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 24 +- 11 files changed, 609 insertions(+), 94 deletions(-) base-commit: 14e8e0f6008865d823a8184a276702a6c3cbef3d -- 2.30.0
