vxge: Modify __vxge_hw_device_is_privilaged() to not assume function-0 as the privileged function: Resubmit#1

- vxge driver was assuming function-0 is always the privilaged function. Now that
  restriction has been removed any function can act as a privilaged function.

- This patch modifies the __vxge_hw_device_is_privilaged routine to not assume
  function-0 as the privileged function.

- Recreated the patch by incorporating review comments from Dave Miller to
  remove double slash in path names.

Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 30 insertions, 22 deletions

diff --git a/drivers/net/vxge/vxge-config.c b/drivers/net/vxge/vxge-config.c
index 9e94c4b0fb18..11cdb381681a 100644
--- a/drivers/net/vxge/vxge-config.c
+++ b/drivers/net/vxge/vxge-config.c
@@ -356,10 +356,8 @@ __vxge_hw_device_access_rights_get(u32 host_type, u32 func_id)
 
         switch (host_type) {
         case VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION:
-                if (func_id == 0) {
-                        access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
-                                        VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
-                }
+                access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
+                                VXGE_HW_DEVICE_ACCESS_RIGHT_SRPCIM;
                 break;
         case VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION:
                 access_rights |= VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM |
@@ -382,6 +380,22 @@ __vxge_hw_device_access_rights_get(u32 host_type, u32 func_id)
         return access_rights;
 }
 /*
+ * __vxge_hw_device_is_privilaged
+ * This routine checks if the device function is privilaged or not
+ */
+
+enum vxge_hw_status
+__vxge_hw_device_is_privilaged(u32 host_type, u32 func_id)
+{
+        if (__vxge_hw_device_access_rights_get(host_type,
+                func_id) &
+                VXGE_HW_DEVICE_ACCESS_RIGHT_MRPCIM)
+                return VXGE_HW_OK;
+        else
+                return VXGE_HW_ERR_PRIVILAGED_OPEARATION;
+}
+
+/*
  * __vxge_hw_device_host_info_get
  * This routine returns the host type assignments
  */
@@ -446,18 +460,6 @@ __vxge_hw_verify_pci_e_info(struct __vxge_hw_device *hldev)
         return VXGE_HW_OK;
 }
 
-enum vxge_hw_status
-__vxge_hw_device_is_privilaged(struct __vxge_hw_device *hldev)
-{
-        if ((hldev->host_type == VXGE_HW_NO_MR_NO_SR_NORMAL_FUNCTION ||
-        hldev->host_type == VXGE_HW_MR_NO_SR_VH0_BASE_FUNCTION ||
-        hldev->host_type == VXGE_HW_NO_MR_SR_VH0_FUNCTION0) &&
-        (hldev->func_id == 0))
-                return VXGE_HW_OK;
-        else
-                return VXGE_HW_ERR_PRIVILAGED_OPEARATION;
-}
-
 /*
  * vxge_hw_wrr_rebalance - Rebalance the RX_WRR and KDFC_WRR calandars.
  * Rebalance the RX_WRR and KDFC_WRR calandars.
@@ -470,7 +472,8 @@ vxge_hw_status vxge_hw_wrr_rebalance(struct __vxge_hw_device *hldev)
         u32 i, j, how_often = 1;
         enum vxge_hw_status status = VXGE_HW_OK;
 
-        status = __vxge_hw_device_is_privilaged(hldev);
+        status = __vxge_hw_device_is_privilaged(hldev->host_type,
+                        hldev->func_id);
         if (status != VXGE_HW_OK)
                 goto exit;
 
@@ -668,7 +671,8 @@ enum vxge_hw_status __vxge_hw_device_initialize(struct __vxge_hw_device *hldev)
 {
         enum vxge_hw_status status = VXGE_HW_OK;
 
-        if (VXGE_HW_OK == __vxge_hw_device_is_privilaged(hldev)) {
+        if (VXGE_HW_OK == __vxge_hw_device_is_privilaged(hldev->host_type,
+                                hldev->func_id)) {
                 /* Validate the pci-e link width and speed */
                 status = __vxge_hw_verify_pci_e_info(hldev);
                 if (status != VXGE_HW_OK)
@@ -953,7 +957,8 @@ vxge_hw_mrpcim_stats_access(struct __vxge_hw_device *hldev,
         u64 val64;
         enum vxge_hw_status status = VXGE_HW_OK;
 
-        status = __vxge_hw_device_is_privilaged(hldev);
+        status = __vxge_hw_device_is_privilaged(hldev->host_type,
+                        hldev->func_id);
         if (status != VXGE_HW_OK)
                 goto exit;
 
@@ -990,7 +995,8 @@ vxge_hw_device_xmac_aggr_stats_get(struct __vxge_hw_device *hldev, u32 port,
 
         val64 = (u64 *)aggr_stats;
 
-        status = __vxge_hw_device_is_privilaged(hldev);
+        status = __vxge_hw_device_is_privilaged(hldev->host_type,
+                        hldev->func_id);
         if (status != VXGE_HW_OK)
                 goto exit;
 
@@ -1023,7 +1029,8 @@ vxge_hw_device_xmac_port_stats_get(struct __vxge_hw_device *hldev, u32 port,
         u32 offset = 0x0;
         val64 = (u64 *) port_stats;
 
-        status = __vxge_hw_device_is_privilaged(hldev);
+        status = __vxge_hw_device_is_privilaged(hldev->host_type,
+                        hldev->func_id);
         if (status != VXGE_HW_OK)
                 goto exit;
 
@@ -1221,7 +1228,8 @@ enum vxge_hw_status vxge_hw_device_setpause_data(struct __vxge_hw_device *hldev,
                 goto exit;
         }
 
-        status = __vxge_hw_device_is_privilaged(hldev);
+        status = __vxge_hw_device_is_privilaged(hldev->host_type,
+                        hldev->func_id);
         if (status != VXGE_HW_OK)
                 goto exit;