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>

3 files changed, 53 insertions, 0 deletions

diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c
index 632c0d323867..5d37601df03f 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.c
+++ b/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
diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h
index 7ecca3b591a6..671a89d84f98 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.h
+++ b/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);
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 29e7870e0b35..858bb473bd42 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/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
                  */