cxgb4/cxgb4vf: Add set VF mac address support

Add ndo_set_vf_mac support which allows to set the MAC address
for cxgb4vf interfaces from the host

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 41 insertions, 0 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index dc92c80a75f4..2a476cc4e073 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -8264,3 +8264,44 @@ void t4_idma_monitor(struct adapter *adapter,
 		t4_sge_decode_idma_state(adapter, idma->idma_state[i]);
 	}
 }
+
+/**
+ *	t4_set_vf_mac - Set MAC address for the specified VF
+ *	@adapter: The adapter
+ *	@vf: one of the VFs instantiated by the specified PF
+ *	@naddr: the number of MAC addresses
+ *	@addr: the MAC address(es) to be set to the specified VF
+ */
+int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf,
+		      unsigned int naddr, u8 *addr)
+{
+	struct fw_acl_mac_cmd cmd;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_ACL_MAC_CMD) |
+				    FW_CMD_REQUEST_F |
+				    FW_CMD_WRITE_F |
+				    FW_ACL_MAC_CMD_PFN_V(adapter->pf) |
+				    FW_ACL_MAC_CMD_VFN_V(vf));
+
+	/* Note: Do not enable the ACL */
+	cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd));
+	cmd.nmac = naddr;
+
+	switch (adapter->pf) {
+	case 3:
+		memcpy(cmd.macaddr3, addr, sizeof(cmd.macaddr3));
+		break;
+	case 2:
+		memcpy(cmd.macaddr2, addr, sizeof(cmd.macaddr2));
+		break;
+	case 1:
+		memcpy(cmd.macaddr1, addr, sizeof(cmd.macaddr1));
+		break;
+	case 0:
+		memcpy(cmd.macaddr0, addr, sizeof(cmd.macaddr0));
+		break;
+	}
+
+	return t4_wr_mbox(adapter, adapter->mbox, &cmd, sizeof(cmd), &cmd);
+}