[RFC net-next v2 08/14] net: stmmac: dwmac1000: 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/dwmac1000.h      | 1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h 
b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
index 184ca13c8f79..56a69fb6f0b9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
@@ -146,6 +146,7 @@ enum inter_frame_gap {
 #define GMAC_FRAME_FILTER_DAIF 0x00000008      /* DA Inverse Filtering */
 #define GMAC_FRAME_FILTER_PM   0x00000010      /* Pass all multicast */
 #define GMAC_FRAME_FILTER_DBF  0x00000020      /* Disable Broadcast frames */
+#define GMAC_FRAME_FILTER_PCF  0x00000080      /* Pass Control frames */
 #define GMAC_FRAME_FILTER_SAIF 0x00000100      /* Inverse Filtering */
 #define GMAC_FRAME_FILTER_SAF  0x00000200      /* Source Address Filter */
 #define GMAC_FRAME_FILTER_HPF  0x00000400      /* Hash or perfect Filter */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c 
b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 398303c783f4..8ca73bd15e07 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -172,7 +172,7 @@ static void dwmac1000_set_filter(struct mac_device_info *hw,
        memset(mc_filter, 0, sizeof(mc_filter));
 
        if (dev->flags & IFF_PROMISC) {
-               value = GMAC_FRAME_FILTER_PR;
+               value = GMAC_FRAME_FILTER_PR | GMAC_FRAME_FILTER_PCF;
        } else if (dev->flags & IFF_ALLMULTI) {
                value = GMAC_FRAME_FILTER_PM;   /* pass all multi */
        } else if (!netdev_mc_empty(dev)) {
-- 
2.7.4