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Merge branch 'r8169-replace-several-function-pointers-with-direct-calls'

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Heiner Kallweit says:

====================
r8169: replace several function pointers with direct calls

This series removes most function pointers from struct rtl8169_private
and uses direct calls instead. This simplifies the code and avoids
the penalty of indirect calls in times of retpoline.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-06-02 18:15:38 -07:00
commit 201d8d5e0d
1 changed files with 84 additions and 119 deletions
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203
drivers/net/ethernet/realtek/r8169.c
View File

@ -655,18 +655,7 @@ struct rtl8169_private {
const struct rtl_coalesce_info *coalesce_info;
struct clk *clk;
struct mdio_ops {
void (*write)(struct rtl8169_private *, int, int);
int (*read)(struct rtl8169_private *, int);
} mdio_ops;
struct jumbo_ops {
void (*enable)(struct rtl8169_private *);
void (*disable)(struct rtl8169_private *);
} jumbo_ops;
void (*hw_start)(struct rtl8169_private *tp);
bool (*tso_csum)(struct rtl8169_private *, struct sk_buff *, u32 *);
struct {
DECLARE_BITMAP(flags, RTL_FLAG_MAX);
@ -1019,12 +1008,36 @@ static int r8168dp_2_mdio_read(struct rtl8169_private *tp, int reg)
static void rtl_writephy(struct rtl8169_private *tp, int location, int val)
{
tp->mdio_ops.write(tp, location, val);
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_27:
r8168dp_1_mdio_write(tp, location, val);
break;
case RTL_GIGA_MAC_VER_28:
case RTL_GIGA_MAC_VER_31:
r8168dp_2_mdio_write(tp, location, val);
break;
case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51:
r8168g_mdio_write(tp, location, val);
break;
default:
r8169_mdio_write(tp, location, val);
break;
}
}
static int rtl_readphy(struct rtl8169_private *tp, int location)
{
return tp->mdio_ops.read(tp, location);
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_27:
return r8168dp_1_mdio_read(tp, location);
case RTL_GIGA_MAC_VER_28:
case RTL_GIGA_MAC_VER_31:
return r8168dp_2_mdio_read(tp, location);
case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51:
return r8168g_mdio_read(tp, location);
default:
return r8169_mdio_read(tp, location);
}
}
static void rtl_patchphy(struct rtl8169_private *tp, int reg_addr, int value)
@ -4059,31 +4072,6 @@ static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return phy_mii_ioctl(tp->phydev, ifr, cmd);
}
static void rtl_init_mdio_ops(struct rtl8169_private *tp)
{
struct mdio_ops *ops = &tp->mdio_ops;
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_27:
ops->write = r8168dp_1_mdio_write;
ops->read = r8168dp_1_mdio_read;
break;
case RTL_GIGA_MAC_VER_28:
case RTL_GIGA_MAC_VER_31:
ops->write = r8168dp_2_mdio_write;
ops->read = r8168dp_2_mdio_read;
break;
case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51:
ops->write = r8168g_mdio_write;
ops->read = r8168g_mdio_read;
break;
default:
ops->write = r8169_mdio_write;
ops->read = r8169_mdio_read;
break;
}
}
static void rtl_wol_suspend_quirk(struct rtl8169_private *tp)
{
switch (tp->mac_version) {
@ -4202,24 +4190,6 @@ static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
tp->dirty_tx = tp->cur_tx = tp->cur_rx = 0;
}
static void rtl_hw_jumbo_enable(struct rtl8169_private *tp)
{
if (tp->jumbo_ops.enable) {
rtl_unlock_config_regs(tp);
tp->jumbo_ops.enable(tp);
rtl_lock_config_regs(tp);
}
}
static void rtl_hw_jumbo_disable(struct rtl8169_private *tp)
{
if (tp->jumbo_ops.disable) {
rtl_unlock_config_regs(tp);
tp->jumbo_ops.disable(tp);
rtl_lock_config_regs(tp);
}
}
static void r8168c_hw_jumbo_enable(struct rtl8169_private *tp)
{
RTL_W8(tp, Config3, RTL_R8(tp, Config3) | Jumbo_En0);
@ -4286,55 +4256,56 @@ static void r8168b_1_hw_jumbo_disable(struct rtl8169_private *tp)
RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~(1 << 0));
}
static void rtl_init_jumbo_ops(struct rtl8169_private *tp)
static void rtl_hw_jumbo_enable(struct rtl8169_private *tp)
{
struct jumbo_ops *ops = &tp->jumbo_ops;
rtl_unlock_config_regs(tp);
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_11:
ops->disable = r8168b_0_hw_jumbo_disable;
ops->enable = r8168b_0_hw_jumbo_enable;
r8168b_0_hw_jumbo_enable(tp);
break;
case RTL_GIGA_MAC_VER_12:
case RTL_GIGA_MAC_VER_17:
ops->disable = r8168b_1_hw_jumbo_disable;
ops->enable = r8168b_1_hw_jumbo_enable;
r8168b_1_hw_jumbo_enable(tp);
break;
case RTL_GIGA_MAC_VER_18: /* Wild guess. Needs info from Realtek. */
case RTL_GIGA_MAC_VER_19:
case RTL_GIGA_MAC_VER_20:
case RTL_GIGA_MAC_VER_21: /* Wild guess. Needs info from Realtek. */
case RTL_GIGA_MAC_VER_22:
case RTL_GIGA_MAC_VER_23:
case RTL_GIGA_MAC_VER_24:
case RTL_GIGA_MAC_VER_25:
case RTL_GIGA_MAC_VER_26:
ops->disable = r8168c_hw_jumbo_disable;
ops->enable = r8168c_hw_jumbo_enable;
case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_26:
r8168c_hw_jumbo_enable(tp);
break;
case RTL_GIGA_MAC_VER_27:
case RTL_GIGA_MAC_VER_28:
ops->disable = r8168dp_hw_jumbo_disable;
ops->enable = r8168dp_hw_jumbo_enable;
case RTL_GIGA_MAC_VER_27 ... RTL_GIGA_MAC_VER_28:
r8168dp_hw_jumbo_enable(tp);
break;
case RTL_GIGA_MAC_VER_31: /* Wild guess. Needs info from Realtek. */
case RTL_GIGA_MAC_VER_32:
case RTL_GIGA_MAC_VER_33:
case RTL_GIGA_MAC_VER_34:
ops->disable = r8168e_hw_jumbo_disable;
ops->enable = r8168e_hw_jumbo_enable;
case RTL_GIGA_MAC_VER_31 ... RTL_GIGA_MAC_VER_34:
r8168e_hw_jumbo_enable(tp);
break;
/*
* No action needed for jumbo frames with 8169.
* No jumbo for 810x at all.
*/
case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51:
default:
ops->disable = NULL;
ops->enable = NULL;
break;
}
rtl_lock_config_regs(tp);
}
static void rtl_hw_jumbo_disable(struct rtl8169_private *tp)
{
rtl_unlock_config_regs(tp);
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_11:
r8168b_0_hw_jumbo_disable(tp);
break;
case RTL_GIGA_MAC_VER_12:
case RTL_GIGA_MAC_VER_17:
r8168b_1_hw_jumbo_disable(tp);
break;
case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_26:
r8168c_hw_jumbo_disable(tp);
break;
case RTL_GIGA_MAC_VER_27 ... RTL_GIGA_MAC_VER_28:
r8168dp_hw_jumbo_disable(tp);
break;
case RTL_GIGA_MAC_VER_31 ... RTL_GIGA_MAC_VER_34:
r8168e_hw_jumbo_disable(tp);
break;
default:
break;
}
rtl_lock_config_regs(tp);
}
DECLARE_RTL_COND(rtl_chipcmd_cond)
@ -5808,8 +5779,7 @@ static int msdn_giant_send_check(struct sk_buff *skb)
return ret;
}
static bool rtl8169_tso_csum_v1(struct rtl8169_private *tp,
struct sk_buff *skb, u32 *opts)
static void rtl8169_tso_csum_v1(struct sk_buff *skb, u32 *opts)
{
u32 mss = skb_shinfo(skb)->gso_size;
@ -5826,8 +5796,6 @@ static bool rtl8169_tso_csum_v1(struct rtl8169_private *tp,
else
WARN_ON_ONCE(1);
}
return true;
}
static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp,
@ -5917,6 +5885,18 @@ static bool rtl_tx_slots_avail(struct rtl8169_private *tp,
return slots_avail > nr_frags;
}
/* Versions RTL8102e and from RTL8168c onwards support csum_v2 */
static bool rtl_chip_supports_csum_v2(struct rtl8169_private *tp)
{
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
case RTL_GIGA_MAC_VER_10 ... RTL_GIGA_MAC_VER_17:
return false;
default:
return true;
}
}
static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
@ -5939,9 +5919,13 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
opts[1] = cpu_to_le32(rtl8169_tx_vlan_tag(skb));
opts[0] = DescOwn;
if (!tp->tso_csum(tp, skb, opts)) {
r8169_csum_workaround(tp, skb);
return NETDEV_TX_OK;
if (rtl_chip_supports_csum_v2(tp)) {
if (!rtl8169_tso_csum_v2(tp, skb, opts)) {
r8169_csum_workaround(tp, skb);
return NETDEV_TX_OK;
}
} else {
rtl8169_tso_csum_v1(skb, opts);
}
len = skb_headlen(skb);
@ -6979,18 +6963,6 @@ static void rtl_hw_initialize(struct rtl8169_private *tp)
}
}
/* Versions RTL8102e and from RTL8168c onwards support csum_v2 */
static bool rtl_chip_supports_csum_v2(struct rtl8169_private *tp)
{
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_06:
case RTL_GIGA_MAC_VER_10 ... RTL_GIGA_MAC_VER_17:
return false;
default:
return true;
}
}
static int rtl_jumbo_max(struct rtl8169_private *tp)
{
/* Non-GBit versions don't support jumbo frames */
@ -7136,9 +7108,6 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_master(pdev);
rtl_init_mdio_ops(tp);
rtl_init_jumbo_ops(tp);
chipset = tp->mac_version;
rc = rtl_alloc_irq(tp);
@ -7189,12 +7158,8 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* Disallow toggling */
dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
if (rtl_chip_supports_csum_v2(tp)) {
tp->tso_csum = rtl8169_tso_csum_v2;
if (rtl_chip_supports_csum_v2(tp))
dev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
} else {
tp->tso_csum = rtl8169_tso_csum_v1;
}
dev->hw_features |= NETIF_F_RXALL;
dev->hw_features |= NETIF_F_RXFCS;