linux-kernel - [PATCH net-next 09/18] net: stmmac: dwmac4/5: Also pass control frames while in promisc mode

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Date:   Thu, 23 May 2019 09:36:59 +0200
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Jose Abreu <Jose.Abreu@...opsys.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: [PATCH net-next 09/18] net: stmmac: dwmac4/5: Also pass control frames while in promisc mode

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 <joabreu@...opsys.com>
Cc: Joao Pinto <jpinto@...opsys.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre Torgue <alexandre.torgue@...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