[PATCH net 6/8] bnxt_en: Return standard Linux error codes for hwrm flow cmds.

[Michael Chan]

From: Venkat Duvvuru <venkatkumar.duvv...@broadcom.com>

Currently, internal error value is returned by the driver, when
hwrm_cfa_flow_alloc() fails due lack of resources.  We should be returning
Linux errno value -ENOSPC instead.

This patch also converts other similar command errors to standard Linux errno
code (-EIO) in bnxt_tc.c

Fixes: db1d36a27324 ("bnxt_en: add TC flower offload flow_alloc/free FW cmds")
Signed-off-by: Venkat Duvvuru <venkatkumar.duvv...@broadcom.com>
Signed-off-by: Michael Chan <michael.c...@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
index 2049d43..65c2cee 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
@@ -349,6 +349,9 @@ static int bnxt_hwrm_cfa_flow_free(struct bnxt *bp, __le16 
flow_handle)
        if (rc)
                netdev_info(bp->dev, "Error: %s: flow_handle=0x%x rc=%d",
                            __func__, flow_handle, rc);
+
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -484,13 +487,15 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, 
struct bnxt_tc_flow *flow,
        req.action_flags = cpu_to_le16(action_flags);
 
        mutex_lock(&bp->hwrm_cmd_lock);
-
        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
        if (!rc)
                *flow_handle = resp->flow_handle;
-
        mutex_unlock(&bp->hwrm_cmd_lock);
 
+       if (rc == HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR)
+               rc = -ENOSPC;
+       else if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -561,6 +566,8 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
                netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
        mutex_unlock(&bp->hwrm_cmd_lock);
 
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -576,6 +583,9 @@ static int hwrm_cfa_decap_filter_free(struct bnxt *bp,
        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
        if (rc)
                netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -624,6 +634,8 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
                netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
        mutex_unlock(&bp->hwrm_cmd_lock);
 
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -639,6 +651,9 @@ static int hwrm_cfa_encap_record_free(struct bnxt *bp,
        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
        if (rc)
                netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
@@ -1338,8 +1353,10 @@ static int bnxt_tc_get_flow_stats(struct bnxt *bp,
        } else {
                netdev_info(bp->dev, "error rc=%d", rc);
        }
-
        mutex_unlock(&bp->hwrm_cmd_lock);
+
+       if (rc)
+               rc = -EIO;
        return rc;
 }
 
-- 
1.8.3.1