Done in a not-very-elegant way:
Iterate over tcp listen hash, then pick out the tcp sockets
with mptcp-ctx structure attached, then take the conn->sk for dumping.
First patch is preparation/cleanup.
Second patch gets rid of locking to avoid a lockdep splat.
If the socket lock is really needed (I don't see where) I can workaround
this by dropping locks temporarily when iterating the listen hash table,
but its a bit more awkward.
Last patch is needed so that 'Send-Q' has expected content instead of 0.
Sample output:
ss -Mil
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 20 127.0.0.1:12000 0.0.0.0:*
subflows_max:2
Florian Westphal (4):
mptcp: diag: switch to context structure
mptcp: remove locking in mptcp_diag_fill_info
mptcp: listen diag dump support
mptcp: let mptcp listen dump show listen backlog size
net/mptcp/mptcp_diag.c | 91 +++++++++++++++++++++++++++++++++++++++---
net/mptcp/protocol.c | 5 ++-
net/mptcp/sockopt.c | 6 ---
3 files changed, 90 insertions(+), 12 deletions(-)
Done in a not-very-elegant way: Iterate over tcp listen hash, then pick out the tcp sockets with mptcp-ctx structure attached, then take the conn->sk for dumping. First patch is preparation/cleanup. Second patch gets rid of locking to avoid a lockdep splat. If the socket lock is really needed (I don't see where) I can workaround this by dropping locks temporarily when iterating the listen hash table, but its a bit more awkward. Last patch is needed so that 'Send-Q' has expected content instead of 0. Sample output: ss -Mil State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 20 127.0.0.1:12000 0.0.0.0:* subflows_max:2 Florian Westphal (4): mptcp: diag: switch to context structure mptcp: remove locking in mptcp_diag_fill_info mptcp: listen diag dump support mptcp: let mptcp listen dump show listen backlog size net/mptcp/mptcp_diag.c | 91 +++++++++++++++++++++++++++++++++++++++--- net/mptcp/protocol.c | 5 ++- net/mptcp/sockopt.c | 6 --- 3 files changed, 90 insertions(+), 12 deletions(-)