[net-next,v2,00/18] net: stmmac: Improvements and Selftests

[ Thanks to the introducion of selftests this series ended up being a misc
of improvements and the selftests additions per-se. ]

This introduces selftests support in stmmac driver. We add 9 basic sanity
checks and MAC loopback support for all cores within the driver. This way
more tests can easily be added in the future and can be run in virtually
any MAC/GMAC/QoS/XGMAC platform.

Having this we can find regressions and missing features in the driver
while at the same time we can check if the IP is correctly working.

We have been using this for some time now and I do have more tests to
submit in the feature. My experience is that although writing the tests
adds more development time, the gain results are obvious.

I let this feature optional within the driver under a Kconfig option.

Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>

Corentin Labbe (1):
  net: ethernet: stmmac: dwmac-sun8i: Enable control of loopback

Jose Abreu (17):
  net: stmmac: Add MAC loopback callback to HWIF
  net: stmmac: dwmac100: Add MAC loopback support
  net: stmmac: dwmac1000: Add MAC loopback support
  net: stmmac: dwmac4/5: Add MAC loopback support
  net: stmmac: dwxgmac2: Add MAC loopback support
  net: stmmac: Switch MMC functions to HWIF callbacks
  net: stmmac: dwmac1000: Also pass control frames while in promisc mode
  net: stmmac: dwmac4/5: Also pass control frames while in promisc mode
  net: stmmac: dwxgmac2: Also pass control frames while in promisc mode
  net: stmmac: Introduce selftests support
  net: stmmac: dwmac1000: Fix Hash Filter
  net: stmmac: dwmac1000: Clear unused address entries
  net: stmmac: dwmac4/5: Fix Hash Filter
  net: stmmac: dwmac4/5: Do not disable whole RX in dma_stop_rx()
  net: stmmac: dwxgmac2: Do not disable whole RX in dma_stop_rx()
  net: stmmac: dwmac4/5: Clear unused address entries
  net: stmmac: Prevent missing interrupts when running NAPI

 drivers/net/ethernet/stmicro/stmmac/Kconfig        |   9 +
 drivers/net/ethernet/stmicro/stmmac/Makefile       |   2 +
 drivers/net/ethernet/stmicro/stmmac/common.h       |   1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c  |  13 +
 drivers/net/ethernet/stmicro/stmmac/dwmac1000.h    |   1 +
 .../net/ethernet/stmicro/stmmac/dwmac1000_core.c   |  22 +-
 .../net/ethernet/stmicro/stmmac/dwmac100_core.c    |  13 +
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h       |   3 +
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c  |  29 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c   |   4 -
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |   2 +
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    |  15 +-
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |   4 -
 drivers/net/ethernet/stmicro/stmmac/hwif.c         |   9 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  21 +
 drivers/net/ethernet/stmicro/stmmac/mmc.h          |   4 -
 drivers/net/ethernet/stmicro/stmmac/mmc_core.c     |  13 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       |  22 +
 .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c   |   8 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |   7 +-
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 850 +++++++++++++++++++++
 21 files changed, 1029 insertions(+), 23 deletions(-)
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c

From: Jose Abreu <Jose.Abreu@synopsys.com>
Date: Fri, 24 May 2019 10:20:08 +0200

> [ Thanks to the introducion of selftests this series ended up being a misc
> of improvements and the selftests additions per-se. ]
> 
> This introduces selftests support in stmmac driver. We add 9 basic sanity
> checks and MAC loopback support for all cores within the driver. This way
> more tests can easily be added in the future and can be run in virtually
> any MAC/GMAC/QoS/XGMAC platform.
> 
> Having this we can find regressions and missing features in the driver
> while at the same time we can check if the IP is correctly working.
> 
> We have been using this for some time now and I do have more tests to
> submit in the feature. My experience is that although writing the tests
> adds more development time, the gain results are obvious.
> 
> I let this feature optional within the driver under a Kconfig option.

Series applied.