be2net: allow VFs to program MAC and VLAN filters

In the current design VFs were not allowed to program MAC/VLAN filters.
Only the PF driver was allowed to configure/provision MAC and transparent
VLANs to a VF. Change this to support MAC/VLAN filtering on a VF by a VM.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be_cmds.c

@@ -2606,6 +2606,38 @@ err:
 	return status;
 }
 
+/* Set privilege(s) for a function */
+int be_cmd_set_fn_privileges(struct be_adapter *adapter, u32 privileges,
+			     u32 domain)
+{
+	struct be_mcc_wrb *wrb;
+	struct be_cmd_req_set_fn_privileges *req;
+	int status;
+
+	spin_lock_bh(&adapter->mcc_lock);
+
+	wrb = wrb_from_mccq(adapter);
+	if (!wrb) {
+		status = -EBUSY;
+		goto err;
+	}
+
+	req = embedded_payload(wrb);
+	be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON,
+			       OPCODE_COMMON_SET_FN_PRIVILEGES, sizeof(*req),
+			       wrb, NULL);
+	req->hdr.domain = domain;
+	if (lancer_chip(adapter))
+		req->privileges_lancer = cpu_to_le32(privileges);
+	else
+		req->privileges = cpu_to_le32(privileges);
+
+	status = be_mcc_notify_wait(adapter);
+err:
+	spin_unlock_bh(&adapter->mcc_lock);
+	return status;
+}
+
 /* pmac_id_valid: true => pmac_id is supplied and MAC address is requested.
  * pmac_id_valid: false => pmac_id or MAC address is requested.
  *		  If pmac_id is returned, pmac_id_valid is returned as true

drivers/net/ethernet/emulex/benet/be_cmds.h

@@ -202,6 +202,7 @@ struct be_mcc_mailbox {
 #define OPCODE_COMMON_READ_TRANSRECV_DATA		73
 #define OPCODE_COMMON_GET_PORT_NAME			77
 #define OPCODE_COMMON_SET_INTERRUPT_ENABLE		89
+#define OPCODE_COMMON_SET_FN_PRIVILEGES			100
 #define OPCODE_COMMON_GET_PHY_DETAILS			102
 #define OPCODE_COMMON_SET_DRIVER_FUNCTION_CAP		103
 #define OPCODE_COMMON_GET_CNTL_ADDITIONAL_ATTRIBUTES	121
@@ -1474,6 +1475,11 @@ struct be_cmd_resp_get_fn_privileges {
 	u32 privilege_mask;
 };
 
+struct be_cmd_req_set_fn_privileges {
+	struct be_cmd_req_hdr hdr;
+	u32 privileges;		/* Used by BE3, SH-R */
+	u32 privileges_lancer;	/* Used by Lancer */
+};
 
 /******************** GET/SET_MACLIST  **************************/
 #define BE_MAX_MAC			64
@@ -1921,6 +1927,8 @@ extern int be_cmd_get_reg_len(struct be_adapter *adapter, u32 *log_size);
 extern void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf);
 extern int be_cmd_get_fn_privileges(struct be_adapter *adapter,
 				    u32 *privilege, u32 domain);
+extern int be_cmd_set_fn_privileges(struct be_adapter *adapter,
+				    u32 privileges, u32 vf_num);
 extern int be_cmd_get_mac_from_list(struct be_adapter *adapter, u8 *mac,
 				    bool *pmac_id_active, u32 *pmac_id,
 				    u8 domain);

drivers/net/ethernet/emulex/benet/be_main.c

@@ -2880,6 +2880,7 @@ static int be_vf_setup(struct be_adapter *adapter)
 	u16 def_vlan, lnk_speed;
 	int status, old_vfs, vf;
 	struct device *dev = &adapter->pdev->dev;
+	u32 privileges;
 
 	old_vfs = pci_num_vf(adapter->pdev);
 	if (old_vfs) {
@@ -2923,6 +2924,18 @@ static int be_vf_setup(struct be_adapter *adapter)
 	}
 
 	for_all_vfs(adapter, vf_cfg, vf) {
+		/* Allow VFs to programs MAC/VLAN filters */
+		status = be_cmd_get_fn_privileges(adapter, &privileges, vf + 1);
+		if (!status && !(privileges & BE_PRIV_FILTMGMT)) {
+			status = be_cmd_set_fn_privileges(adapter,
+							  privileges |
+							  BE_PRIV_FILTMGMT,
+							  vf + 1);
+			if (!status)
+				dev_info(dev, "VF%d has FILTMGMT privilege\n",
+					 vf);
+		}
+
 		/* BE3 FW, by default, caps VF TX-rate to 100mbps.
 		 * Allow full available bandwidth
 		 */