[SRU][F:linux-bluefield][PATCH 0/4] Connection tracking fixes

[Daniel Jurgens]

These patches aren't neccsarily related, but are order dependent, so sending
as a series. SRU justification for each are provided below.

Alaa Hleihel (2):
  net/sched: act_ct: Make tcf_ct_flow_table_restore_skb inline
  netfilter: flowtable: Make nf_flow_table_offload_add/del_cb inline

SRU Justification:

The patches are for removing module dependency between software module and driver module.

* Explain the bug(s)

Without the patches there is a dependency between mlx5_core, act_ct and nf_flow_table.

* brief explanation of fixes

The fix is moving used function from c source file to header file.

* How to test

Check module dependency with modinfo, lsmod, etc.

* What it could break.

If a sofwtare module doesn't exists, i.e. disabling in .config. then the driver module, mlx5_core,
in this case will fail to load.



Paul Blakey (1):
  netfilter: flowtable: Use rw sem as flow block lock

SRU Justification:

Increase flow insertion rate by using rw lock instead of mutex on the flow block.

* Explain the bug(s)

Insertion rate is done in multiple threads but there is a mutex lock between looking for the flow block
which slows things down. So use a rw lock and take a read lock which is sufficient.

* brief explanation of fixes

Use a rw lock on the flow block.

* How to test

CT offload and check insertion rate of 5 tuples rules.

* What it could break.

Flow insertion rate.



Roi Dayan (1):
  netfilter: flowtable: Free block_cb when being deleted

SRU Justification:

Free block_cb memory when asked to be deleted

* Explain the bug(s)

Missing memory cleanup.

* brief explanation of fixes

Free the memory

* How to test

Can be tested with kmemleak. Do ct offload then stop and clean tc ct rules and scan kmemleak.

* What it could break.

Memleak.

 include/net/netfilter/nf_flow_table.h | 51 +++++++++++++++++++++++++++++++----
 include/net/tc_act/tc_ct.h            | 11 +++++++-
 net/netfilter/nf_flow_table_core.c    | 46 +------------------------------
 net/netfilter/nf_flow_table_offload.c |  4 +--
 net/sched/act_ct.c                    | 11 --------
 5 files changed, 59 insertions(+), 64 deletions(-)

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1.8.3.1