[dpdk-stable] patch 'net/ixgbevf: fix link state' has been queued to LTS release 16.11.9

[Luca Boccassi]

Hi,

FYI, your patch has been queued to LTS release 16.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/21/18. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the patch applied
to the branch. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Luca Boccassi

---
>From d0c0b8732e167a1bd78ccc119e3ed403fdc6fc4d Mon Sep 17 00:00:00 2001
From: Yanglong Wu <yanglong.wu at intel.com>
Date: Tue, 13 Nov 2018 14:34:43 +0800
Subject: [PATCH] net/ixgbevf: fix link state

[ upstream commit 91546fb62e675943a574c2542c0486f2928fed49 ]

For ixgbevf kernel driver, link status changes from down to up
will trigger vf kernel driver send IXGBE_VF_RESET message to pf
kernel driver, after this, vf kernel driver will disable and enable
it self. By these series operations, the vf kernel driver report
link up. Besides, all these operations handles in kernel thread.
For DPDK user space driver, it only gets link status changes from
down to up, but miss IXGBE_VF_RESET message sending and reset itself.
If we will add fully implementation of link status change for DPDK
user space driver, we need take much more modification. We have
aligned that for link status changes from down to up we only notify
link is up, users need to reset vf port.

Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")

Signed-off-by: Rosen Xu <rosen.xu at intel.com>
Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
Acked-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 182a8c662..61c075b6a 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -3227,13 +3227,8 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
 
 static int
 ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
-		   int *link_up, int wait_to_complete)
+		   int *link_up, int wait_to_complete __rte_unused)
 {
-	/**
-	 * for a quick link status checking, wait_to_compelet == 0,
-	 * skip PF link status checking
-	 */
-	bool no_pflink_check = wait_to_complete == 0;
 	struct ixgbe_mbx_info *mbx = &hw->mbx;
 	struct ixgbe_mac_info *mac = &hw->mac;
 	uint32_t links_reg, in_msg;
@@ -3294,14 +3289,6 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
 		*speed = IXGBE_LINK_SPEED_UNKNOWN;
 	}
 
-	if (no_pflink_check) {
-		if (*speed == IXGBE_LINK_SPEED_UNKNOWN)
-			mac->get_link_status = true;
-		else
-			mac->get_link_status = false;
-
-		goto out;
-	}
 	/* if the read failed it could just be a mailbox collision, best wait
 	 * until we are called again and don't report an error
 	 */
@@ -3311,7 +3298,7 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
 	if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
 		/* msg is not CTS and is NACK we must have lost CTS status */
 		if (in_msg & IXGBE_VT_MSGTYPE_NACK)
-			ret_val = -1;
+			mac->get_link_status = false;
 		goto out;
 	}
 
-- 
2.19.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2018-11-19 12:15:18.396946906 +0000
+++ 0014-net-ixgbevf-fix-link-state.patch	2018-11-19 12:15:18.107611433 +0000
@@ -1,8 +1,10 @@
-From 91546fb62e675943a574c2542c0486f2928fed49 Mon Sep 17 00:00:00 2001
+From d0c0b8732e167a1bd78ccc119e3ed403fdc6fc4d Mon Sep 17 00:00:00 2001
 From: Yanglong Wu <yanglong.wu at intel.com>
 Date: Tue, 13 Nov 2018 14:34:43 +0800
 Subject: [PATCH] net/ixgbevf: fix link state
 
+[ upstream commit 91546fb62e675943a574c2542c0486f2928fed49 ]
+
 For ixgbevf kernel driver, link status changes from down to up
 will trigger vf kernel driver send IXGBE_VF_RESET message to pf
 kernel driver, after this, vf kernel driver will disable and enable
@@ -16,22 +18,24 @@
 link is up, users need to reset vf port.
 
 Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")
-Cc: stable at dpdk.org
 
 Signed-off-by: Rosen Xu <rosen.xu at intel.com>
 Signed-off-by: Yanglong Wu <yanglong.wu at intel.com>
 Acked-by: Qi Zhang <qi.z.zhang at intel.com>
 ---
- drivers/net/ixgbe/ixgbe_ethdev.c | 15 +--------------
- 1 file changed, 1 insertion(+), 14 deletions(-)
+ drivers/net/ixgbe/ixgbe_ethdev.c | 17 ++---------------
+ 1 file changed, 2 insertions(+), 15 deletions(-)
 
 diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
-index 8148577f5..91ba6201d 100644
+index 182a8c662..61c075b6a 100644
 --- a/drivers/net/ixgbe/ixgbe_ethdev.c
 +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
-@@ -3880,11 +3880,6 @@ static int
+@@ -3227,13 +3227,8 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev,
+ 
+ static int
  ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
- 		   int *link_up, int wait_to_complete)
+-		   int *link_up, int wait_to_complete)
++		   int *link_up, int wait_to_complete __rte_unused)
  {
 -	/**
 -	 * for a quick link status checking, wait_to_compelet == 0,
@@ -41,7 +45,7 @@
  	struct ixgbe_mbx_info *mbx = &hw->mbx;
  	struct ixgbe_mac_info *mac = &hw->mac;
  	uint32_t links_reg, in_msg;
-@@ -3945,14 +3940,6 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
+@@ -3294,14 +3289,6 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
  		*speed = IXGBE_LINK_SPEED_UNKNOWN;
  	}
  
@@ -56,7 +60,7 @@
  	/* if the read failed it could just be a mailbox collision, best wait
  	 * until we are called again and don't report an error
  	 */
-@@ -3962,7 +3949,7 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
+@@ -3311,7 +3298,7 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
  	if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
  		/* msg is not CTS and is NACK we must have lost CTS status */
  		if (in_msg & IXGBE_VT_MSGTYPE_NACK)