This series include two enhancements for the MPTCP path management, namely RM_ADDR support and ADD_ADDR echo support, as specified by RFC sections 3.4.1 and 3.4.2.
1 RM_ADDR support include 9 patches (1-3 and 8-13): Patch 1 is the helper for patch 2, these two patches add the RM_ADDR outgoing functions, which are derived from ADD_ADDR's corresponding functions. Patch 3 adds the RM_ADDR incoming logic, when RM_ADDR suboption is received, close the subflow matching the rm_id, and update PM counter. Patch 8 is the main remove routine. When the PM netlink removes an address, we traverse all the existing msk sockets to find the relevant sockets. Then trigger the RM_ADDR signal and remove the subflow which using this local address, this subflow removing functions has been implemented in patch 9. Finally, patches 10-13 are the self-tests for RM_ADDR. 2 ADD_ADDR echo support include 7 patches (4-7 and 14-16). Patch 4 adds the ADD_ADDR echo logic, when the ADD_ADDR suboption has been received, send out the same ADD_ADDR suboption with echo-flag, and no HMAC included. Patches 5 and 6 are the self-tests for ADD_ADDR echo. Patch 7 is a little cleaning up. Patch 14 and 15 are the helpers for patch 16. These three patches add the ADD_ADDR retransmition when no ADD_ADDR echo is received. Geliang Tang (16): mptcp: rename addr_signal and the related functions mptcp: add the outgoing RM_ADDR support mptcp: add the incoming RM_ADDR support mptcp: send out ADD_ADDR with echo flag mptcp: add ADD_ADDR related mibs selftests: mptcp: add ADD_ADDR mibs check function mptcp: add accept_subflow re-check mptcp: remove addr and subflow in PM netlink mptcp: implement mptcp_pm_remove_subflow mptcp: add RM_ADDR related mibs mptcp: add mptcp_destroy_common helper selftests: mptcp: add remove cfg in mptcp_connect selftests: mptcp: add remove addr and subflow test cases mptcp: add struct mptcp_pm_add_entry mptcp: add sk_stop_timer_sync helper mptcp: retransmit ADD_ADDR when timeout include/net/sock.h | 2 + net/core/sock.c | 7 + net/mptcp/mib.c | 4 + net/mptcp/mib.h | 4 + net/mptcp/options.c | 81 +++-- net/mptcp/pm.c | 91 ++++-- net/mptcp/pm_netlink.c | 276 +++++++++++++++++- net/mptcp/protocol.c | 30 +- net/mptcp/protocol.h | 39 ++- net/mptcp/subflow.c | 3 +- .../selftests/net/mptcp/mptcp_connect.c | 18 +- .../testing/selftests/net/mptcp/mptcp_join.sh | 189 +++++++++++- 12 files changed, 674 insertions(+), 70 deletions(-) -- 2.17.1
