[net-next,v3,0/3] cxgb4: add mirror action support for TC-MATCHALL

This series of patches add support to mirror all ingress traffic
for TC-MATCHALL ingress offload.

Patch 1 adds support to dynamically create a mirror Virtual Interface
(VI) that accepts all mirror ingress traffic when mirror action is
set in TC-MATCHALL offload.

Patch 2 adds support to allocate mirror Rxqs and setup RSS for the
mirror VI.

Patch 3 adds support to replicate all the main VI configuration to
mirror VI. This includes replicating MTU, promiscuous mode,
all-multicast mode, and enabled netdev Rx feature offloads.

Thanks,
Rahul

v3:
- Replace mirror VI refcount_t with normal u32 variable in all patches.
- Add back calling cxgb4_port_mirror_start() in cxgb_open(), which
  was there in v1, but got missed in v2 during refactoring, in patch
  3.

v2:
- Add mutex to protect all mirror VI data, instead of just
  mirror Rxqs, in patch 1 and 2.
- Remove the un-needed mirror Rxq mutex in patch 2.
- Simplify the replication code by refactoring t4_set_rxmode()
  to handle mirror VI, instead of duplicating the t4_set_rxmode()
  calls in multiple places in patch 3.

Rahul Lakkireddy (3):
  cxgb4: add mirror action to TC-MATCHALL offload
  cxgb4: add support for mirror Rxqs
  cxgb4: add main VI to mirror VI config replication

 drivers/net/ethernet/chelsio/cxgb4/cxgb4.h    |  24 +-
 .../ethernet/chelsio/cxgb4/cxgb4_debugfs.c    |  66 ++-
 .../net/ethernet/chelsio/cxgb4/cxgb4_main.c   | 445 ++++++++++++++++--
 .../ethernet/chelsio/cxgb4/cxgb4_tc_flower.c  |  16 +-
 .../ethernet/chelsio/cxgb4/cxgb4_tc_flower.h  |   3 +-
 .../chelsio/cxgb4/cxgb4_tc_matchall.c         |  57 ++-
 .../chelsio/cxgb4/cxgb4_tc_matchall.h         |   1 +
 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c    |  43 +-
 8 files changed, 606 insertions(+), 49 deletions(-)

On Tue, 30 Jun 2020 18:41:27 +0530 Rahul Lakkireddy wrote:
> This series of patches add support to mirror all ingress traffic
> for TC-MATCHALL ingress offload.
> 
> Patch 1 adds support to dynamically create a mirror Virtual Interface
> (VI) that accepts all mirror ingress traffic when mirror action is
> set in TC-MATCHALL offload.
> 
> Patch 2 adds support to allocate mirror Rxqs and setup RSS for the
> mirror VI.
> 
> Patch 3 adds support to replicate all the main VI configuration to
> mirror VI. This includes replicating MTU, promiscuous mode,
> all-multicast mode, and enabled netdev Rx feature offloads.

Based on what you described:

Reviewed-by: Jakub Kicinski <kuba@kernel.org>

:)

From: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Date: Tue, 30 Jun 2020 18:41:27 +0530

> This series of patches add support to mirror all ingress traffic
> for TC-MATCHALL ingress offload.
> 
> Patch 1 adds support to dynamically create a mirror Virtual Interface
> (VI) that accepts all mirror ingress traffic when mirror action is
> set in TC-MATCHALL offload.
> 
> Patch 2 adds support to allocate mirror Rxqs and setup RSS for the
> mirror VI.
> 
> Patch 3 adds support to replicate all the main VI configuration to
> mirror VI. This includes replicating MTU, promiscuous mode,
> all-multicast mode, and enabled netdev Rx feature offloads.
 ...

Series applied to net-next, thanks.