[mptcp-net,v6,0/5] Fix some mptcp syncookie process bugs

Message

Jianguo Wu June 25, 2021, 2:48 a.m. UTC

From: Jianguo Wu <[e-mail]>

v5->v6:
 - patch1: describe the testing tools in the commit log
 - patch4: add return value to mptcp_incoming_options(), return 0 if
	   a subflow has been reset, else return 1, and drop the packet
	   in tcp_data_queue()/tcp_rcv_state_process() if the return
	   value is 0
 - patch5: update selftest case "multiple subflows limited by server",
	   since the expected behavior is changed by patch4

v4->v5:
 - patch4: add comment 

v3->v4:
 - patch1: using seq and sport/dport for hashing, and ignore network
	   headers altogether, as suggest by Florian

v2->v3:
 - patch1: directly use inet6_ehashfn() for IPv6
 - patch4: add Fixes tag.

v1->v2:
 - patch1: handle ipv6 sockets/addresses,
	   always use 4-tuple drived hash and never look at skb->hash
 - patch3: split into 2 patches.
 - patch4: new added.

Jianguo Wu (5):
  mptcp: fix warning in __skb_flow_dissect() when do syn cookie for
    subflow join
  mptcp: remove redundant req destruct in subflow_check_req()
  mptcp: fix syncookie process if mptcp can not_accept new subflow
  mptcp: avoid processing packet if a subflow reset
  selftests: mptcp: fix case multiple subflows limited by server

 include/net/mptcp.h                             |  2 +-
 net/ipv4/tcp_input.c                            | 19 +++++++++++++++----
 net/mptcp/options.c                             | 22 ++++++++++++++--------
 net/mptcp/subflow.c                             | 11 +++--------
 net/mptcp/syncookies.c                          | 16 +++++++++++++++-
 tools/testing/selftests/net/mptcp/mptcp_join.sh |  2 +-
 6 files changed, 49 insertions(+), 23 deletions(-)