[RFC net-next v2 09/14] net: stmmac: dwmac4/5: Also pass control frames while in promisc mode

[Jose Abreu]

In order for the selftests to run the Flow Control selftest we need to
also pass pause frames to the stack.

Pass this type of frames while in promiscuous mode.

Signed-off-by: Jose Abreu <joab...@synopsys.com>
Cc: Joao Pinto <jpi...@synopsys.com>
Cc: David S. Miller <da...@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavall...@st.com>
Cc: Alexandre Torgue <alexandre.tor...@st.com>
Cc: Corentin Labbe <clabbe.montj...@gmail.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h      | 1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h 
b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index 3dddd7902b0f..c3cbca804bcd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -64,6 +64,7 @@
 #define GMAC_PACKET_FILTER_PR          BIT(0)
 #define GMAC_PACKET_FILTER_HMC         BIT(2)
 #define GMAC_PACKET_FILTER_PM          BIT(4)
+#define GMAC_PACKET_FILTER_PCF         BIT(7)
 
 #define GMAC_MAX_PERFECT_ADDRESSES     128
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c 
b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 2f1a2a6f9b33..02a3a7e2db6e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -404,7 +404,7 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
        unsigned int value = 0;
 
        if (dev->flags & IFF_PROMISC) {
-               value = GMAC_PACKET_FILTER_PR;
+               value = GMAC_PACKET_FILTER_PR | GMAC_PACKET_FILTER_PCF;
        } else if ((dev->flags & IFF_ALLMULTI) ||
                        (netdev_mc_count(dev) > HASH_TABLE_SIZE)) {
                /* Pass all multi */
-- 
2.7.4