[dpdk-stable] [PATCH v10 09/26] net/i40e: fix VF reset flow

[dpdk-stable] [PATCH v10 09/26] net/i40e: fix VF reset flow

[Wenzhuo Lu]

From: Qi Zhang <qi.z.zhang@intel.com>

Add missing step during VF reset: PF should
set I40E_VFGEN_RSTAT to ACTIVE at end of the
VF reset operation or VF driver may not able
to detect that reset is already completed.
This patch also remove the unnecessary enum
for vfr state.

Fixes: 4861cde46116 ("i40e: new poll mode driver")

CC: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/i40e/i40e_pf.c | 6 ++++--
 drivers/net/i40e/i40e_pf.h | 5 -----
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/i40e/i40e_pf.c b/drivers/net/i40e/i40e_pf.c
index 5c58424..8a6733c 100644
--- a/drivers/net/i40e/i40e_pf.c
+++ b/drivers/net/i40e/i40e_pf.c
@@ -139,7 +139,7 @@
 	abs_vf_id = vf_id + hw->func_caps.vf_base_id;
 
 	/* Notify VF that we are in VFR progress */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_INPROGRESS);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_INPROGRESS);
 
 	/*
 	 * If require a SW VF reset, a VFLR interrupt will be generated,
@@ -220,7 +220,7 @@
 	}
 
 	/* Reset done, Set COMPLETE flag and clear reset bit */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_COMPLETED);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_COMPLETED);
 	val = I40E_READ_REG(hw, I40E_VPGEN_VFRTRIG(vf_id));
 	val &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 	I40E_WRITE_REG(hw, I40E_VPGEN_VFRTRIG(vf_id), val);
@@ -248,6 +248,8 @@
 		return -EFAULT;
 	}
 
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_VFACTIVE);
+
 	return ret;
 }
 
diff --git a/drivers/net/i40e/i40e_pf.h b/drivers/net/i40e/i40e_pf.h
index 47a9c34..b4c2287 100644
--- a/drivers/net/i40e/i40e_pf.h
+++ b/drivers/net/i40e/i40e_pf.h
@@ -48,11 +48,6 @@
 
 #define I40E_DPDK_OFFSET  0x100
 
-enum i40e_pf_vfr_state {
-	I40E_PF_VFR_INPROGRESS = 0,
-	I40E_PF_VFR_COMPLETED = 1,
-};
-
 /* DPDK pf driver specific command to VF */
 enum i40e_virtchnl_ops_dpdk {
 	/*
-- 
1.9.3

[dpdk-stable] [PATCH v10 12/26] net/i40e: fix VF MAC address assignment

[Wenzhuo Lu]

From: Ferruh Yigit <ferruh.yigit@intel.com>

If PF sets vf->mac_addr, in VF initialization hw->mac.addr will be set
to that same value. It is possible to check if PF set a MAC address or
not through the hw->mac.addr variable.

hw->mac.addr set by i40e_vf_parse_hw_config(), call stack is:

In PF side
i40e_pf_host_process_cmd_get_vf_resources()
    eth_addr_copy(vf->mac_addr, vf_res->vsi_res[0].default_mac_address)

In VF sise
i40evf_init_vf()
    i40evf_get_vf_resources()
            i40e_vf_parse_hw_config()
                    memcpy(hw->mac.addr, vsi_res->default_mac_addr)

Updated code is after i40evf_get_vf_resources() and can benefit from
hw->mac.addr variable.

Fixes: 89e6b86384bb ("i40evf: rework MAC address validation")

CC: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 drivers/net/i40e/i40e_ethdev_vf.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index a9a8bb4..17a035c 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1195,7 +1195,6 @@ static int i40evf_dev_xstats_get(struct rte_eth_dev *dev,
 	int i, err, bufsz;
 	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
-	struct ether_addr *p_mac_addr;
 	uint16_t interval =
 		i40e_calc_itr_interval(I40E_QUEUE_ITR_INTERVAL_MAX);
 
@@ -1272,13 +1271,10 @@ static int i40evf_dev_xstats_get(struct rte_eth_dev *dev,
 	vf->vsi.adapter = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
 
 	/* Store the MAC address configured by host, or generate random one */
-	p_mac_addr = (struct ether_addr *)(vf->vsi_res->default_mac_addr);
-	if (is_valid_assigned_ether_addr(p_mac_addr)) { /* Configured by host */
-		ether_addr_copy(p_mac_addr, (struct ether_addr *)hw->mac.addr);
+	if (is_valid_assigned_ether_addr((struct ether_addr *)hw->mac.addr))
 		vf->flags |= I40E_FLAG_VF_MAC_BY_PF;
-	} else {
+	else
 		eth_random_addr(hw->mac.addr); /* Generate a random one */
-	}
 
 	/* If the PF host is not DPDK, set the interval of ITR0 to max*/
 	if (vf->version_major != I40E_DPDK_VERSION_MAJOR) {
-- 
1.9.3

[dpdk-stable] [PATCH v10 09/26] net/i40e: fix VF reset flow

[Wenzhuo Lu]

From: Qi Zhang <qi.z.zhang@intel.com>

Add missing step during VF reset: PF should
set I40E_VFGEN_RSTAT to ACTIVE at end of the
VF reset operation or VF driver may not able
to detect that reset is already completed.
This patch also remove the unnecessary enum
for vfr state.

Fixes: 4861cde46116 ("i40e: new poll mode driver")

CC: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/i40e/i40e_pf.c | 6 ++++--
 drivers/net/i40e/i40e_pf.h | 5 -----
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/i40e/i40e_pf.c b/drivers/net/i40e/i40e_pf.c
index 5c58424..8a6733c 100644
--- a/drivers/net/i40e/i40e_pf.c
+++ b/drivers/net/i40e/i40e_pf.c
@@ -139,7 +139,7 @@
 	abs_vf_id = vf_id + hw->func_caps.vf_base_id;
 
 	/* Notify VF that we are in VFR progress */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_INPROGRESS);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_INPROGRESS);
 
 	/*
 	 * If require a SW VF reset, a VFLR interrupt will be generated,
@@ -220,7 +220,7 @@
 	}
 
 	/* Reset done, Set COMPLETE flag and clear reset bit */
-	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_PF_VFR_COMPLETED);
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_COMPLETED);
 	val = I40E_READ_REG(hw, I40E_VPGEN_VFRTRIG(vf_id));
 	val &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
 	I40E_WRITE_REG(hw, I40E_VPGEN_VFRTRIG(vf_id), val);
@@ -248,6 +248,8 @@
 		return -EFAULT;
 	}
 
+	I40E_WRITE_REG(hw, I40E_VFGEN_RSTAT1(vf_id), I40E_VFR_VFACTIVE);
+
 	return ret;
 }
 
diff --git a/drivers/net/i40e/i40e_pf.h b/drivers/net/i40e/i40e_pf.h
index 47a9c34..b4c2287 100644
--- a/drivers/net/i40e/i40e_pf.h
+++ b/drivers/net/i40e/i40e_pf.h
@@ -48,11 +48,6 @@
 
 #define I40E_DPDK_OFFSET  0x100
 
-enum i40e_pf_vfr_state {
-	I40E_PF_VFR_INPROGRESS = 0,
-	I40E_PF_VFR_COMPLETED = 1,
-};
-
 /* DPDK pf driver specific command to VF */
 enum i40e_virtchnl_ops_dpdk {
 	/*
-- 
1.9.3