Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
10GbE Intel Wired LAN Driver Updates 2016-07-22

This series contains updates to ixgbe and ixgbevf only.

Emil fixes the NACK check in ixgbevf_set_uc_addr_vf() for instances where
the index is not equal to zero.  Fixes an issue where mac->ops.setup_fc
can be NULL for backplanes which can cause the driver to crash on load.

Don fixes the second parameter of the LED functions, which is the index to
the LED we are interested in affecting.  Fixed variable to store register
reads to unsigned integer.  Adds support for the new x553 hardware into
ixgbevf.  Fixed a missing rtnl lock around ixgbevf_reinit_locked().
Fixed an issue where in ixgbevf_reset_subtask() was not verifying that
the port has been removed.  Cleans up the initial crosstalk fix, since
the SFP that indicates the presence of a SFP+ module changes between
hardware types.

Babu Moger fixes typo in freeing IRQ, since the array subscript increments
after the execution of the statement.

Wei Yongjun adds the missing destroy_workqueue() before returning from
ixgbe_init_module() in the error handling case.

Tony adds range checking for setting the MTU from the VF, where the PF can
return a NACK but this was not passed on to the VF, so propagate the
results from the PF to the VF so errors can be reported.  Consolidates
mailbox read and write functions, since the recent changes to
ixgbevf_write_msg_read_ack(), other functions are performing the same
operations done here.

Colin Ian King removes a redundant check on ret_val, since ret_val has
not changed since the previous check.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 46 insertions, 50 deletions

diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index e670d3b19c3c..a52f70ec42b6 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -33,6 +33,18 @@
  */
 #define IXGBE_HV_RESET_OFFSET           0x201
 
+static inline s32 ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw, u32 *msg,
+					     u32 *retmsg, u16 size)
+{
+	struct ixgbe_mbx_info *mbx = &hw->mbx;
+	s32 retval = mbx->ops.write_posted(hw, msg, size);
+
+	if (retval)
+		return retval;
+
+	return mbx->ops.read_posted(hw, retmsg, size);
+}
+
 /**
  *  ixgbevf_start_hw_vf - Prepare hardware for Tx/Rx
  *  @hw: pointer to hardware structure
@@ -255,8 +267,7 @@ static s32 ixgbevf_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
 
 static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 {
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
-	u32 msgbuf[3];
+	u32 msgbuf[3], msgbuf_chk;
 	u8 *msg_addr = (u8 *)(&msgbuf[1]);
 	s32 ret_val;
 
@@ -268,19 +279,18 @@ static s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
 	 */
 	msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
 	msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
+	msgbuf_chk = msgbuf[0];
+
 	if (addr)
 		ether_addr_copy(msg_addr, addr);
-	ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
 
-	if (!ret_val)
-		ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+	ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 3);
+	if (!ret_val) {
+		msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 
-	msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
-
-	if (!ret_val)
-		if (msgbuf[0] ==
-		    (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
-			ret_val = -ENOMEM;
+		if (msgbuf[0] == (msgbuf_chk | IXGBE_VT_MSGTYPE_NACK))
+			return -ENOMEM;
+	}
 
 	return ret_val;
 }
@@ -423,7 +433,6 @@ int ixgbevf_get_rss_key_locked(struct ixgbe_hw *hw, u8 *rss_key)
 static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 			      u32 vmdq)
 {
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
 	u32 msgbuf[3];
 	u8 *msg_addr = (u8 *)(&msgbuf[1]);
 	s32 ret_val;
@@ -431,10 +440,8 @@ static s32 ixgbevf_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 	memset(msgbuf, 0, sizeof(msgbuf));
 	msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
 	ether_addr_copy(msg_addr, addr);
-	ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
 
-	if (!ret_val)
-		ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+	ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
 
 	msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 
@@ -468,17 +475,6 @@ static s32 ixgbevf_hv_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr,
 	return -EOPNOTSUPP;
 }
 
-static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
-				       u32 *msg, u16 size)
-{
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
-	u32 retmsg[IXGBE_VFMAILBOX_SIZE];
-	s32 retval = mbx->ops.write_posted(hw, msg, size);
-
-	if (!retval)
-		mbx->ops.read_posted(hw, retmsg, size);
-}
-
 /**
  *  ixgbevf_update_mc_addr_list_vf - Update Multicast addresses
  *  @hw: pointer to the HW structure
@@ -519,7 +515,7 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
 		vector_list[i++] = ixgbevf_mta_vector(hw, ha->addr);
 	}
 
-	ixgbevf_write_msg_read_ack(hw, msgbuf, IXGBE_VFMAILBOX_SIZE);
+	ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, IXGBE_VFMAILBOX_SIZE);
 
 	return 0;
 }
@@ -542,7 +538,6 @@ static s32 ixgbevf_hv_update_mc_addr_list_vf(struct ixgbe_hw *hw,
  **/
 static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
 {
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
 	u32 msgbuf[2];
 	s32 err;
 
@@ -556,11 +551,7 @@ static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
 	msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE;
 	msgbuf[1] = xcast_mode;
 
-	err = mbx->ops.write_posted(hw, msgbuf, 2);
-	if (err)
-		return err;
-
-	err = mbx->ops.read_posted(hw, msgbuf, 2);
+	err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
 	if (err)
 		return err;
 
@@ -589,7 +580,6 @@ static s32 ixgbevf_hv_update_xcast_mode(struct ixgbe_hw *hw, int xcast_mode)
 static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
 			       bool vlan_on)
 {
-	struct ixgbe_mbx_info *mbx = &hw->mbx;
 	u32 msgbuf[2];
 	s32 err;
 
@@ -598,11 +588,7 @@ static s32 ixgbevf_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind,
 	/* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
 	msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
 
-	err = mbx->ops.write_posted(hw, msgbuf, 2);
-	if (err)
-		goto mbx_err;
-
-	err = mbx->ops.read_posted(hw, msgbuf, 2);
+	err = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
 	if (err)
 		goto mbx_err;
 
@@ -797,13 +783,22 @@ out:
  *  @hw: pointer to the HW structure
  *  @max_size: value to assign to max frame size
  **/
-static void ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
+static s32 ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
 {
 	u32 msgbuf[2];
+	s32 ret_val;
 
 	msgbuf[0] = IXGBE_VF_SET_LPE;
 	msgbuf[1] = max_size;
-	ixgbevf_write_msg_read_ack(hw, msgbuf, 2);
+
+	ret_val = ixgbevf_write_msg_read_ack(hw, msgbuf, msgbuf, 2);
+	if (ret_val)
+		return ret_val;
+	if ((msgbuf[0] & IXGBE_VF_SET_LPE) &&
+	    (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK))
+		return IXGBE_ERR_MBX;
+
+	return 0;
 }
 
 /**
@@ -812,7 +807,7 @@ static void ixgbevf_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
  * @max_size: value to assign to max frame size
  * Hyper-V variant.
  **/
-static void ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
+static s32 ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
 {
 	u32 reg;
 
@@ -823,6 +818,8 @@ static void ixgbevf_hv_set_rlpml_vf(struct ixgbe_hw *hw, u16 max_size)
 	/* CRC == 4 */
 	reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN);
 	IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg);
+
+	return 0;
 }
 
 /**
@@ -839,11 +836,8 @@ static int ixgbevf_negotiate_api_version_vf(struct ixgbe_hw *hw, int api)
 	msg[0] = IXGBE_VF_API_NEGOTIATE;
 	msg[1] = api;
 	msg[2] = 0;
-	err = hw->mbx.ops.write_posted(hw, msg, 3);
-
-	if (!err)
-		err = hw->mbx.ops.read_posted(hw, msg, 3);
 
+	err = ixgbevf_write_msg_read_ack(hw, msg, msg, 3);
 	if (!err) {
 		msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 
@@ -892,11 +886,8 @@ int ixgbevf_get_queues(struct ixgbe_hw *hw, unsigned int *num_tcs,
 	/* Fetch queue configuration from the PF */
 	msg[0] = IXGBE_VF_GET_QUEUE;
 	msg[1] = msg[2] = msg[3] = msg[4] = 0;
-	err = hw->mbx.ops.write_posted(hw, msg, 5);
-
-	if (!err)
-		err = hw->mbx.ops.read_posted(hw, msg, 5);
 
+	err = ixgbevf_write_msg_read_ack(hw, msg, msg, 5);
 	if (!err) {
 		msg[0] &= ~IXGBE_VT_MSGTYPE_CTS;
 
@@ -1005,3 +996,8 @@ const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = {
 	.mac = ixgbe_mac_X550EM_x_vf,
 	.mac_ops = &ixgbevf_hv_mac_ops,
 };
+
+const struct ixgbevf_info ixgbevf_x550em_a_vf_info = {
+	.mac = ixgbe_mac_x550em_a_vf,
+	.mac_ops = &ixgbevf_mac_ops,
+};