Date:   Fri, 12 Jan 2018 13:37:04 +0300
From:   Igor Russkikh <igor.russkikh@...antia.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, David Arcari <darcari@...hat.com>,
        Pavel Belous <pavel.belous@...antia.com>,
        Igor Russkikh <igor.russkikh@...antia.com>
Subject: [PATCH net-next 13/22] net: aquantia: Convert hw and caps structures to const static pointers

This removes unnecessary structure copying, and prepares the driver for
separate firmware ops table introduction.

We also remove extra copy of capabilities structure (which is const actually)
and also replace it with a const pointer in aq_nic_cfg.

Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 93 ++++++++++++-------------
 drivers/net/ethernet/aquantia/atlantic/aq_nic.h |  3 +-
 2 files changed, 47 insertions(+), 49 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index b6d9ef1..578aa59 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -66,8 +66,6 @@ static void aq_nic_cfg_init_defaults(struct aq_nic_s *self)
 {
 	struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
 
-	cfg->aq_hw_caps = &self->aq_hw_caps;
-
 	cfg->vecs = AQ_CFG_VECS_DEF;
 	cfg->tcs = AQ_CFG_TCS_DEF;
 
@@ -123,20 +121,20 @@ int aq_nic_cfg_start(struct aq_nic_s *self)
 	cfg->irq_type = aq_pci_func_get_irq_type(self->aq_pci_func);
 
 	if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
-	    (self->aq_hw_caps.vecs == 1U) ||
+	    (cfg->aq_hw_caps->vecs == 1U) ||
 	    (cfg->vecs == 1U)) {
 		cfg->is_rss = 0U;
 		cfg->vecs = 1U;
 	}
 
-	cfg->link_speed_msk &= self->aq_hw_caps.link_speed_msk;
-	cfg->hw_features = self->aq_hw_caps.hw_features;
+	cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
+	cfg->hw_features = cfg->aq_hw_caps->hw_features;
 	return 0;
 }
 
 static int aq_nic_update_link_status(struct aq_nic_s *self)
 {
-	int err = self->aq_hw_ops.hw_get_link_status(self->aq_hw);
+	int err = self->aq_hw_ops->hw_get_link_status(self->aq_hw);
 
 	if (err)
 		return err;
@@ -178,8 +176,8 @@ static void aq_nic_service_timer_cb(struct timer_list *t)
 	if (err)
 		goto err_exit;
 
-	if (self->aq_hw_ops.hw_update_stats)
-		self->aq_hw_ops.hw_update_stats(self->aq_hw);
+	if (self->aq_hw_ops->hw_update_stats)
+		self->aq_hw_ops->hw_update_stats(self->aq_hw);
 
 	aq_nic_update_ndev_stats(self);
 
@@ -230,11 +228,11 @@ struct aq_nic_s *aq_nic_alloc_cold(struct pci_dev *pdev,
 
 	self->aq_pci_func = aq_pci_func;
 
-	self->aq_hw_ops = *aq_hw_ops;
-	self->aq_hw_caps = *aq_hw_caps;
+	self->aq_hw_ops = aq_hw_ops;
+	self->aq_nic_cfg.aq_hw_caps = aq_hw_caps;
 	self->port = (u8)port;
 
-	self->aq_hw = self->aq_hw_ops.create(aq_pci_func, self->port);
+	self->aq_hw = self->aq_hw_ops->create(aq_pci_func, self->port);
 	if (err < 0)
 		goto err_exit;
 
@@ -256,7 +254,7 @@ int aq_nic_ndev_register(struct aq_nic_s *self)
 		err = -EINVAL;
 		goto err_exit;
 	}
-	err = self->aq_hw_ops.hw_get_mac_permanent(self->aq_hw,
+	err = self->aq_hw_ops->hw_get_mac_permanent(self->aq_hw,
 			    self->ndev->dev_addr);
 	if (err < 0)
 		goto err_exit;
@@ -290,7 +288,7 @@ int aq_nic_ndev_init(struct aq_nic_s *self)
 	self->ndev->features = aq_hw_caps->hw_features;
 	self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 	self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
-	self->ndev->max_mtu = self->aq_hw_caps.mtu - ETH_FCS_LEN - ETH_HLEN;
+	self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
 
 	return 0;
 }
@@ -304,7 +302,7 @@ void aq_nic_ndev_free(struct aq_nic_s *self)
 		unregister_netdev(self->ndev);
 
 	if (self->aq_hw)
-		self->aq_hw_ops.destroy(self->aq_hw);
+		self->aq_hw_ops->destroy(self->aq_hw);
 
 	free_netdev(self->ndev);
 
@@ -366,18 +364,18 @@ int aq_nic_init(struct aq_nic_s *self)
 	unsigned int i = 0U;
 
 	self->power_state = AQ_HW_POWER_STATE_D0;
-	err = self->aq_hw_ops.hw_reset(self->aq_hw);
+	err = self->aq_hw_ops->hw_reset(self->aq_hw);
 	if (err < 0)
 		goto err_exit;
 
-	err = self->aq_hw_ops.hw_init(self->aq_hw,
+	err = self->aq_hw_ops->hw_init(self->aq_hw,
 			    aq_nic_get_ndev(self)->dev_addr);
 	if (err < 0)
 		goto err_exit;
 
 	for (i = 0U, aq_vec = self->aq_vec[0];
 		self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
-		aq_vec_init(aq_vec, &self->aq_hw_ops, self->aq_hw);
+		aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
 
 err_exit:
 	return err;
@@ -389,13 +387,13 @@ int aq_nic_start(struct aq_nic_s *self)
 	int err = 0;
 	unsigned int i = 0U;
 
-	err = self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
+	err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 						    self->mc_list.ar,
 						    self->mc_list.count);
 	if (err < 0)
 		goto err_exit;
 
-	err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw,
+	err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 						   self->packet_filter);
 	if (err < 0)
 		goto err_exit;
@@ -407,7 +405,7 @@ int aq_nic_start(struct aq_nic_s *self)
 			goto err_exit;
 	}
 
-	err = self->aq_hw_ops.hw_start(self->aq_hw);
+	err = self->aq_hw_ops->hw_start(self->aq_hw);
 	if (err < 0)
 		goto err_exit;
 
@@ -432,7 +430,7 @@ int aq_nic_start(struct aq_nic_s *self)
 				goto err_exit;
 		}
 
-		err = self->aq_hw_ops.hw_irq_enable(self->aq_hw,
+		err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 				    AQ_CFG_IRQ_MASK);
 		if (err < 0)
 			goto err_exit;
@@ -617,7 +615,7 @@ int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 	frags = aq_nic_map_skb(self, skb, ring);
 
 	if (likely(frags)) {
-		err = self->aq_hw_ops.hw_ring_tx_xmit(self->aq_hw,
+		err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
 						      ring,
 						      frags);
 		if (err >= 0) {
@@ -634,14 +632,14 @@ int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 
 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
 {
-	return self->aq_hw_ops.hw_interrupt_moderation_set(self->aq_hw);
+	return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
 }
 
 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
 {
 	int err = 0;
 
-	err = self->aq_hw_ops.hw_packet_filter_set(self->aq_hw, flags);
+	err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
 	if (err < 0)
 		goto err_exit;
 
@@ -673,11 +671,11 @@ int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
 		 * multicast mask
 		 */
 		self->packet_filter |= IFF_ALLMULTI;
-		self->aq_hw->aq_nic_cfg->mc_list_count = 0;
-		return self->aq_hw_ops.hw_packet_filter_set(self->aq_hw,
+		self->aq_nic_cfg.mc_list_count = 0;
+		return self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 							self->packet_filter);
 	} else {
-		return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
+		return self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 						    self->mc_list.ar,
 						    self->mc_list.count);
 	}
@@ -692,7 +690,7 @@ int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
 
 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
 {
-	return self->aq_hw_ops.hw_set_mac_address(self->aq_hw, ndev->dev_addr);
+	return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
 }
 
 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
@@ -707,8 +705,9 @@ int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 
 	regs->version = 1;
 
-	err = self->aq_hw_ops.hw_get_regs(self->aq_hw,
-					  &self->aq_hw_caps, regs_buff);
+	err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
+					   self->aq_nic_cfg.aq_hw_caps,
+					   regs_buff);
 	if (err < 0)
 		goto err_exit;
 
@@ -718,7 +717,7 @@ int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 
 int aq_nic_get_regs_count(struct aq_nic_s *self)
 {
-	return self->aq_hw_caps.mac_regs_count;
+	return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
 }
 
 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
@@ -726,7 +725,7 @@ void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
 	unsigned int i = 0U;
 	unsigned int count = 0U;
 	struct aq_vec_s *aq_vec = NULL;
-	struct aq_stats_s *stats = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw);
+	struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 
 	if (!stats)
 		goto err_exit;
@@ -771,7 +770,7 @@ err_exit:;
 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
 {
 	struct net_device *ndev = self->ndev;
-	struct aq_stats_s *stats = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw);
+	struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 
 	ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc;
 	ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc;
@@ -792,27 +791,27 @@ void aq_nic_get_link_ksettings(struct aq_nic_s *self,
 
 	ethtool_link_ksettings_zero_link_mode(cmd, supported);
 
-	if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_10G)
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     10000baseT_Full);
 
-	if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_5G)
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     5000baseT_Full);
 
-	if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_2GS)
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     2500baseT_Full);
 
-	if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_1G)
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     1000baseT_Full);
 
-	if (self->aq_hw_caps.link_speed_msk & AQ_NIC_RATE_100M)
+	if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     100baseT_Full);
 
-	if (self->aq_hw_caps.flow_control)
+	if (self->aq_nic_cfg.aq_hw_caps->flow_control)
 		ethtool_link_ksettings_add_link_mode(cmd, supported,
 						     Pause);
 
@@ -859,7 +858,7 @@ int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 	int err = 0;
 
 	if (cmd->base.autoneg == AUTONEG_ENABLE) {
-		rate = self->aq_hw_caps.link_speed_msk;
+		rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
 		self->aq_nic_cfg.is_autoneg = true;
 	} else {
 		speed = cmd->base.speed;
@@ -890,7 +889,7 @@ int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 			goto err_exit;
 		break;
 		}
-		if (!(self->aq_hw_caps.link_speed_msk & rate)) {
+		if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
 			err = -1;
 			goto err_exit;
 		}
@@ -898,7 +897,7 @@ int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 		self->aq_nic_cfg.is_autoneg = false;
 	}
 
-	err = self->aq_hw_ops.hw_set_link_speed(self->aq_hw, rate);
+	err = self->aq_hw_ops->hw_set_link_speed(self->aq_hw, rate);
 	if (err < 0)
 		goto err_exit;
 
@@ -917,7 +916,7 @@ u32 aq_nic_get_fw_version(struct aq_nic_s *self)
 {
 	u32 fw_version = 0U;
 
-	self->aq_hw_ops.hw_get_fw_version(self->aq_hw, &fw_version);
+	self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
 
 	return fw_version;
 }
@@ -932,7 +931,7 @@ int aq_nic_stop(struct aq_nic_s *self)
 
 	del_timer_sync(&self->service_timer);
 
-	self->aq_hw_ops.hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
+	self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
 
 	if (self->aq_nic_cfg.is_polling)
 		del_timer_sync(&self->polling_timer);
@@ -943,7 +942,7 @@ int aq_nic_stop(struct aq_nic_s *self)
 		self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 		aq_vec_stop(aq_vec);
 
-	return self->aq_hw_ops.hw_stop(self->aq_hw);
+	return self->aq_hw_ops->hw_stop(self->aq_hw);
 }
 
 void aq_nic_deinit(struct aq_nic_s *self)
@@ -959,9 +958,9 @@ void aq_nic_deinit(struct aq_nic_s *self)
 		aq_vec_deinit(aq_vec);
 
 	if (self->power_state == AQ_HW_POWER_STATE_D0) {
-		(void)self->aq_hw_ops.hw_deinit(self->aq_hw);
+		(void)self->aq_hw_ops->hw_deinit(self->aq_hw);
 	} else {
-		(void)self->aq_hw_ops.hw_set_power(self->aq_hw,
+		(void)self->aq_hw_ops->hw_set_power(self->aq_hw,
 						   self->power_state);
 	}
 
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.h b/drivers/net/ethernet/aquantia/atlantic/aq_nic.h
index a49212a..8e6e542 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.h
@@ -69,8 +69,7 @@ struct aq_nic_s {
 	unsigned int packet_filter;
 	unsigned int power_state;
 	u8 port;
-	struct aq_hw_ops aq_hw_ops;
-	struct aq_hw_caps_s aq_hw_caps;
+	const struct aq_hw_ops *aq_hw_ops;
 	struct aq_nic_cfg_s aq_nic_cfg;
 	struct timer_list service_timer;
 	struct timer_list polling_timer;
-- 
2.7.4

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