bnx2x: Receive traffic that maches management filtering rules

Due to lack of configuration, if the BMC configures the chip to pass all
broadcast/multicast traffic to it, the host will not receive it. On top of
fixing it, also make sure that in promiscuous mode, the host will receive the
management traffic as well.

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index a2de0cd..5273988 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -4831,7 +4831,14 @@
 	int mode = bp->rx_mode;
 	int mask = (1 << BP_L_ID(bp));
 	int func = BP_FUNC(bp);
+	int port = BP_PORT(bp);
 	int i;
+	/* All but management unicast packets should pass to the host as well */
+	u32 llh_mask =
+		NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_BRCST |
+		NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_MLCST |
+		NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_VLAN |
+		NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_NO_VLAN;
 
 	DP(NETIF_MSG_IFUP, "rx mode %d  mask 0x%x\n", mode, mask);
 
@@ -4855,6 +4862,8 @@
 		tstorm_mac_filter.ucast_accept_all = mask;
 		tstorm_mac_filter.mcast_accept_all = mask;
 		tstorm_mac_filter.bcast_accept_all = mask;
+		/* pass management unicast packets as well */
+		llh_mask |= NIG_LLH0_BRB1_DRV_MASK_REG_LLH0_BRB1_DRV_MASK_UNCST;
 		break;
 
 	default:
@@ -4862,6 +4871,10 @@
 		break;
 	}
 
+	REG_WR(bp,
+	       (port ? NIG_REG_LLH1_BRB1_DRV_MASK : NIG_REG_LLH0_BRB1_DRV_MASK),
+	       llh_mask);
+
 	for (i = 0; i < sizeof(struct tstorm_eth_mac_filter_config)/4; i++) {
 		REG_WR(bp, BAR_TSTRORM_INTMEM +
 		       TSTORM_MAC_FILTER_CONFIG_OFFSET(func) + i * 4,