Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/jkirsher/next-queue

Jeff Kirsher says:

====================
100GbE Intel Wired LAN Driver Updates 2019-08-04

This series contains more updates to fm10k from Jake Keller.

Jake removes the unnecessary initialization of some variables to help
resolve static code checker warnings.  Explicitly return success during
resume, since the value of 'err' is always success.  Fixed a issue with
incrementing a void pointer, which can produce undefined behavior.  Used
the __always_unused macro for function templates that are passed as
parameters in functions, but are not used.  Simplified the code by
removing an unnecessary macro in determining the value of NON_Q_VECTORS.
Fixed an issue, using bitwise operations to prevent the low address
overwriting the high portion of the address.
====================

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

drivers/net/ethernet/intel/fm10k/fm10k.h

@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #ifndef _FM10K_H_
 #define _FM10K_H_
@@ -177,14 +177,10 @@ static inline struct netdev_queue *txring_txq(const struct fm10k_ring *ring)
 #define MIN_Q_VECTORS	1
 enum fm10k_non_q_vectors {
 	FM10K_MBX_VECTOR,
-#define NON_Q_VECTORS_VF NON_Q_VECTORS_PF
-	NON_Q_VECTORS_PF
+	NON_Q_VECTORS
 };
 
-#define NON_Q_VECTORS(hw)	(((hw)->mac.type == fm10k_mac_pf) ? \
-						NON_Q_VECTORS_PF : \
-						NON_Q_VECTORS_VF)
-#define MIN_MSIX_COUNT(hw)	(MIN_Q_VECTORS + NON_Q_VECTORS(hw))
+#define MIN_MSIX_COUNT(hw)	(MIN_Q_VECTORS + NON_Q_VECTORS)
 
 struct fm10k_q_vector {
 	struct fm10k_intfc *interface;

drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c

@@ -1114,13 +1114,12 @@ static void fm10k_get_channels(struct net_device *dev,
 			       struct ethtool_channels *ch)
 {
 	struct fm10k_intfc *interface = netdev_priv(dev);
-	struct fm10k_hw *hw = &interface->hw;
 
 	/* report maximum channels */
 	ch->max_combined = fm10k_max_channels(dev);
 
 	/* report info for other vector */
-	ch->max_other = NON_Q_VECTORS(hw);
+	ch->max_other = NON_Q_VECTORS;
 	ch->other_count = ch->max_other;
 
 	/* record RSS queues */
@@ -1132,14 +1131,13 @@ static int fm10k_set_channels(struct net_device *dev,
 {
 	struct fm10k_intfc *interface = netdev_priv(dev);
 	unsigned int count = ch->combined_count;
-	struct fm10k_hw *hw = &interface->hw;
 
 	/* verify they are not requesting separate vectors */
 	if (!count || ch->rx_count || ch->tx_count)
 		return -EINVAL;
 
 	/* verify other_count has not changed */
-	if (ch->other_count != NON_Q_VECTORS(hw))
+	if (ch->other_count != NON_Q_VECTORS)
 		return -EINVAL;
 
 	/* verify the number of channels does not exceed hardware limits */

drivers/net/ethernet/intel/fm10k/fm10k_main.c

@@ -315,7 +315,7 @@ static struct sk_buff *fm10k_fetch_rx_buffer(struct fm10k_ring *rx_ring,
 		/* prefetch first cache line of first page */
 		prefetch(page_addr);
 #if L1_CACHE_BYTES < 128
-		prefetch(page_addr + L1_CACHE_BYTES);
+		prefetch((void *)((u8 *)page_addr + L1_CACHE_BYTES));
 #endif
 
 		/* allocate a skb to store the frags */
@@ -1824,7 +1824,7 @@ static int fm10k_init_msix_capability(struct fm10k_intfc *interface)
 	v_budget = min_t(u16, v_budget, num_online_cpus());
 
 	/* account for vectors not related to queues */
-	v_budget += NON_Q_VECTORS(hw);
+	v_budget += NON_Q_VECTORS;
 
 	/* At the same time, hardware can only support a maximum of
 	 * hw.mac->max_msix_vectors vectors.  With features
@@ -1856,7 +1856,7 @@ static int fm10k_init_msix_capability(struct fm10k_intfc *interface)
 	}
 
 	/* record the number of queues available for q_vectors */
-	interface->num_q_vectors = v_budget - NON_Q_VECTORS(hw);
+	interface->num_q_vectors = v_budget - NON_Q_VECTORS;
 
 	return 0;
 }

drivers/net/ethernet/intel/fm10k/fm10k_mbx.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k_common.h"
 
@@ -2134,7 +2134,8 @@ static s32 fm10k_sm_mbx_process(struct fm10k_hw *hw,
  *  DWORDs, not bytes.  Any invalid values will cause the mailbox to return
  *  error.
  **/
-s32 fm10k_sm_mbx_init(struct fm10k_hw *hw, struct fm10k_mbx_info *mbx,
+s32 fm10k_sm_mbx_init(struct fm10k_hw __always_unused *hw,
+		      struct fm10k_mbx_info *mbx,
 		      const struct fm10k_msg_data *msg_data)
 {
 	mbx->mbx_reg = FM10K_GMBX;

drivers/net/ethernet/intel/fm10k/fm10k_netdev.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k.h"
 #include <linux/vmalloc.h>
@@ -54,7 +54,7 @@ int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
  **/
 static int fm10k_setup_all_tx_resources(struct fm10k_intfc *interface)
 {
-	int i, err = 0;
+	int i, err;
 
 	for (i = 0; i < interface->num_tx_queues; i++) {
 		err = fm10k_setup_tx_resources(interface->tx_ring[i]);
@@ -121,7 +121,7 @@ int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring)
  **/
 static int fm10k_setup_all_rx_resources(struct fm10k_intfc *interface)
 {
-	int i, err = 0;
+	int i, err;
 
 	for (i = 0; i < interface->num_rx_queues; i++) {
 		err = fm10k_setup_rx_resources(interface->rx_ring[i]);
@@ -871,7 +871,7 @@ static int fm10k_uc_vlan_unsync(struct net_device *netdev,
 	u16 glort = interface->glort;
 	u16 vid = interface->vid;
 	bool set = !!(vid / VLAN_N_VID);
-	int err = -EHOSTDOWN;
+	int err;
 
 	/* drop any leading bits on the VLAN ID */
 	vid &= VLAN_N_VID - 1;
@@ -891,7 +891,7 @@ static int fm10k_mc_vlan_unsync(struct net_device *netdev,
 	u16 glort = interface->glort;
 	u16 vid = interface->vid;
 	bool set = !!(vid / VLAN_N_VID);
-	int err = -EHOSTDOWN;
+	int err;
 
 	/* drop any leading bits on the VLAN ID */
 	vid &= VLAN_N_VID - 1;
@@ -1463,7 +1463,7 @@ static void *fm10k_dfwd_add_station(struct net_device *dev,
 	struct fm10k_l2_accel *old_l2_accel = NULL;
 	struct fm10k_dglort_cfg dglort = { 0 };
 	struct fm10k_hw *hw = &interface->hw;
-	int size = 0, i;
+	int size, i;
 	u16 vid, glort;
 
 	/* The hardware supported by fm10k only filters on the destination MAC

drivers/net/ethernet/intel/fm10k/fm10k_pci.c

@@ -898,7 +898,7 @@ static void fm10k_configure_tx_ring(struct fm10k_intfc *interface,
 
 	/* Map interrupt */
 	if (ring->q_vector) {
-		txint = ring->q_vector->v_idx + NON_Q_VECTORS(hw);
+		txint = ring->q_vector->v_idx + NON_Q_VECTORS;
 		txint |= FM10K_INT_MAP_TIMER0;
 	}
 
@@ -1037,7 +1037,7 @@ static void fm10k_configure_rx_ring(struct fm10k_intfc *interface,
 
 	/* Map interrupt */
 	if (ring->q_vector) {
-		rxint = ring->q_vector->v_idx + NON_Q_VECTORS(hw);
+		rxint = ring->q_vector->v_idx + NON_Q_VECTORS;
 		rxint |= FM10K_INT_MAP_TIMER1;
 	}
 
@@ -1720,10 +1720,9 @@ int fm10k_mbx_request_irq(struct fm10k_intfc *interface)
 void fm10k_qv_free_irq(struct fm10k_intfc *interface)
 {
 	int vector = interface->num_q_vectors;
-	struct fm10k_hw *hw = &interface->hw;
 	struct msix_entry *entry;
 
-	entry = &interface->msix_entries[NON_Q_VECTORS(hw) + vector];
+	entry = &interface->msix_entries[NON_Q_VECTORS + vector];
 
 	while (vector) {
 		struct fm10k_q_vector *q_vector;
@@ -1760,7 +1759,7 @@ int fm10k_qv_request_irq(struct fm10k_intfc *interface)
 	unsigned int ri = 0, ti = 0;
 	int vector, err;
 
-	entry = &interface->msix_entries[NON_Q_VECTORS(hw)];
+	entry = &interface->msix_entries[NON_Q_VECTORS];
 
 	for (vector = 0; vector < interface->num_q_vectors; vector++) {
 		struct fm10k_q_vector *q_vector = interface->q_vector[vector];
@@ -2340,7 +2339,7 @@ static int fm10k_handle_resume(struct fm10k_intfc *interface)
 	/* Restart the MAC/VLAN request queue in-case of outstanding events */
 	fm10k_macvlan_schedule(interface);
 
-	return err;
+	return 0;
 }
 
 /**

drivers/net/ethernet/intel/fm10k/fm10k_pf.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k_pf.h"
 #include "fm10k_vf.h"
@@ -1152,7 +1152,7 @@ static void fm10k_iov_update_stats_pf(struct fm10k_hw *hw,
  *  assumption is that in this case it is acceptable to just directly
  *  hand off the message from the VF to the underlying shared code.
  **/
-s32 fm10k_iov_msg_msix_pf(struct fm10k_hw *hw, u32 **results,
+s32 fm10k_iov_msg_msix_pf(struct fm10k_hw *hw, u32 __always_unused **results,
 			  struct fm10k_mbx_info *mbx)
 {
 	struct fm10k_vf_info *vf_info = (struct fm10k_vf_info *)mbx;
@@ -1565,7 +1565,7 @@ static s32 fm10k_get_fault_pf(struct fm10k_hw *hw, int type,
 	/* read remaining fields */
 	fault->address = fm10k_read_reg(hw, type + FM10K_FAULT_ADDR_HI);
 	fault->address <<= 32;
-	fault->address = fm10k_read_reg(hw, type + FM10K_FAULT_ADDR_LO);
+	fault->address |= fm10k_read_reg(hw, type + FM10K_FAULT_ADDR_LO);
 	fault->specinfo = fm10k_read_reg(hw, type + FM10K_FAULT_SPECINFO);
 
 	/* clear valid bit to allow for next error */
@@ -1641,7 +1641,7 @@ const struct fm10k_tlv_attr fm10k_lport_map_msg_attr[] = {
  *  switch API.
  **/
 s32 fm10k_msg_lport_map_pf(struct fm10k_hw *hw, u32 **results,
-			   struct fm10k_mbx_info *mbx)
+			   struct fm10k_mbx_info __always_unused *mbx)
 {
 	u16 glort, mask;
 	u32 dglort_map;
@@ -1684,7 +1684,7 @@ const struct fm10k_tlv_attr fm10k_update_pvid_msg_attr[] = {
  *  This handler configures the default VLAN for the PF
  **/
 static s32 fm10k_msg_update_pvid_pf(struct fm10k_hw *hw, u32 **results,
-				    struct fm10k_mbx_info *mbx)
+				    struct fm10k_mbx_info __always_unused *mbx)
 {
 	u16 glort, pvid;
 	u32 pvid_update;
@@ -1745,7 +1745,7 @@ const struct fm10k_tlv_attr fm10k_err_msg_attr[] = {
  *  messages that the PF has sent.
  **/
 s32 fm10k_msg_err_pf(struct fm10k_hw *hw, u32 **results,
-		     struct fm10k_mbx_info *mbx)
+		     struct fm10k_mbx_info __always_unused *mbx)
 {
 	struct fm10k_swapi_error err_msg;
 	s32 err;

drivers/net/ethernet/intel/fm10k/fm10k_tlv.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k_tlv.h"
 
@@ -472,7 +472,7 @@ static s32 fm10k_tlv_attr_parse(u32 *attr, u32 **results,
 				const struct fm10k_tlv_attr *tlv_attr)
 {
 	u32 i, attr_id, offset = 0;
-	s32 err = 0;
+	s32 err;
 	u16 len;
 
 	/* verify pointers are not NULL */
@@ -587,8 +587,9 @@ s32 fm10k_tlv_msg_parse(struct fm10k_hw *hw, u32 *msg,
  *  a minimum it just indicates that the message requested was
  *  unimplemented.
  **/
-s32 fm10k_tlv_msg_error(struct fm10k_hw *hw, u32 **results,
-			struct fm10k_mbx_info *mbx)
+s32 fm10k_tlv_msg_error(struct fm10k_hw __always_unused *hw,
+			u32 __always_unused **results,
+			struct fm10k_mbx_info __always_unused *mbx)
 {
 	return FM10K_NOT_IMPLEMENTED;
 }

drivers/net/ethernet/intel/fm10k/fm10k_type.h

@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #ifndef _FM10K_TYPE_H_
 #define _FM10K_TYPE_H_

drivers/net/ethernet/intel/fm10k/fm10k_vf.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/* Copyright(c) 2013 - 2018 Intel Corporation. */
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
 
 #include "fm10k_vf.h"
 
@@ -198,7 +198,7 @@ static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
  *  This function should determine the MAC address for the VF
  **/
 s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
-			  struct fm10k_mbx_info *mbx)
+			  struct fm10k_mbx_info __always_unused *mbx)
 {
 	u8 perm_addr[ETH_ALEN];
 	u16 vid;
@@ -267,8 +267,10 @@ static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
  *  This function is used to add or remove unicast MAC addresses for
  *  the VF.
  **/
-static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
-				   const u8 *mac, u16 vid, bool add, u8 flags)
+static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw,
+				   u16 __always_unused glort,
+				   const u8 *mac, u16 vid, bool add,
+				   u8 __always_unused flags)
 {
 	struct fm10k_mbx_info *mbx = &hw->mbx;
 	u32 msg[7];
@@ -309,7 +311,8 @@ static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
  *  This function is used to add or remove multicast MAC addresses for
  *  the VF.
  **/
-static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
+static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw,
+				   u16 __always_unused glort,
 				   const u8 *mac, u16 vid, bool add)
 {
 	struct fm10k_mbx_info *mbx = &hw->mbx;
@@ -373,7 +376,7 @@ const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
  *  are ready to bring up the interface.
  **/
 s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
-			     struct fm10k_mbx_info *mbx)
+			     struct fm10k_mbx_info __always_unused *mbx)
 {
 	hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
 			     FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
@@ -392,8 +395,9 @@ s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
  *  enabled we can add filters, if it is disabled all filters for this
  *  logical port are flushed.
  **/
-static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
-				       u16 count, bool enable)
+static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw,
+				       u16 __always_unused glort,
+				       u16 __always_unused count, bool enable)
 {
 	struct fm10k_mbx_info *mbx = &hw->mbx;
 	u32 msg[2];
@@ -420,7 +424,8 @@ static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
  *  so that it can enable either multicast, multicast promiscuous, or
  *  promiscuous mode of operation.
  **/
-static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
+static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw,
+				      u16 __always_unused glort, u8 mode)
 {
 	struct fm10k_mbx_info *mbx = &hw->mbx;
 	u32 msg[3];
@@ -475,7 +480,7 @@ static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
  *  that information to then populate a DGLORTMAP/DEC entry and the queues
  *  to which it has been assigned.
  **/
-static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
+static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw __always_unused *hw,
 					 struct fm10k_dglort_cfg *dglort)
 {
 	/* verify the dglort pointer */