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-rw-r--r--backport/compat/backport-4.10.c276
1 files changed, 0 insertions, 276 deletions
diff --git a/backport/compat/backport-4.10.c b/backport/compat/backport-4.10.c
deleted file mode 100644
index a35c699e..00000000
--- a/backport/compat/backport-4.10.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/*
- * Copyright(c) 2017 Hauke Mehrtens <hauke@hauke-m.de>
- *
- * Backport functionality introduced in Linux 4.10.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/page_ref.h>
-#include <linux/gfp.h>
-
-#if LINUX_VERSION_IS_GEQ(4,6,0)
-#if LINUX_VERSION_IS_LESS(4,7,0)
-static bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
- const unsigned long *src)
-{
- bool retval = true;
-
- /* TODO: following test will soon always be true */
- if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
- __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
-
- bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
- bitmap_fill(ext, 32);
- bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
- if (bitmap_intersects(ext, src,
- __ETHTOOL_LINK_MODE_MASK_NBITS)) {
- /* src mask goes beyond bit 31 */
- retval = false;
- }
- }
- *legacy_u32 = src[0];
- return retval;
-}
-
-static void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
- u32 legacy_u32)
-{
- bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
- dst[0] = legacy_u32;
-}
-#endif
-
-static u32 mii_get_an(struct mii_if_info *mii, u16 addr)
-{
- int advert;
-
- advert = mii->mdio_read(mii->dev, mii->phy_id, addr);
-
- return mii_lpa_to_ethtool_lpa_t(advert);
-}
-
-/**
- * mii_ethtool_set_link_ksettings - set settings that are specified in @cmd
- * @mii: MII interfaces
- * @cmd: requested ethtool_link_ksettings
- *
- * Returns 0 for success, negative on error.
- */
-int mii_ethtool_set_link_ksettings(struct mii_if_info *mii,
- const struct ethtool_link_ksettings *cmd)
-{
- struct net_device *dev = mii->dev;
- u32 speed = cmd->base.speed;
-
- if (speed != SPEED_10 &&
- speed != SPEED_100 &&
- speed != SPEED_1000)
- return -EINVAL;
- if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL)
- return -EINVAL;
- if (cmd->base.port != PORT_MII)
- return -EINVAL;
- if (cmd->base.phy_address != mii->phy_id)
- return -EINVAL;
- if (cmd->base.autoneg != AUTONEG_DISABLE &&
- cmd->base.autoneg != AUTONEG_ENABLE)
- return -EINVAL;
- if ((speed == SPEED_1000) && (!mii->supports_gmii))
- return -EINVAL;
-
- /* ignore supported, maxtxpkt, maxrxpkt */
-
- if (cmd->base.autoneg == AUTONEG_ENABLE) {
- u32 bmcr, advert, tmp;
- u32 advert2 = 0, tmp2 = 0;
- u32 advertising;
-
- ethtool_convert_link_mode_to_legacy_u32(
- &advertising, cmd->link_modes.advertising);
-
- if ((advertising & (ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full |
- ADVERTISED_1000baseT_Half |
- ADVERTISED_1000baseT_Full)) == 0)
- return -EINVAL;
-
- /* advertise only what has been requested */
- advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
- tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
- if (mii->supports_gmii) {
- advert2 = mii->mdio_read(dev, mii->phy_id,
- MII_CTRL1000);
- tmp2 = advert2 &
- ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
- }
- tmp |= ethtool_adv_to_mii_adv_t(advertising);
-
- if (mii->supports_gmii)
- tmp2 |= ethtool_adv_to_mii_ctrl1000_t(advertising);
- if (advert != tmp) {
- mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
- mii->advertising = tmp;
- }
- if ((mii->supports_gmii) && (advert2 != tmp2))
- mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
-
- /* turn on autonegotiation, and force a renegotiate */
- bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
- bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
- mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);
-
- mii->force_media = 0;
- } else {
- u32 bmcr, tmp;
-
- /* turn off auto negotiation, set speed and duplexity */
- bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
- tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
- BMCR_SPEED1000 | BMCR_FULLDPLX);
- if (speed == SPEED_1000)
- tmp |= BMCR_SPEED1000;
- else if (speed == SPEED_100)
- tmp |= BMCR_SPEED100;
- if (cmd->base.duplex == DUPLEX_FULL) {
- tmp |= BMCR_FULLDPLX;
- mii->full_duplex = 1;
- } else {
- mii->full_duplex = 0;
- }
- if (bmcr != tmp)
- mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);
-
- mii->force_media = 1;
- }
- return 0;
-}
-EXPORT_SYMBOL(mii_ethtool_set_link_ksettings);
-
-
-/**
- * mii_ethtool_get_link_ksettings - get settings that are specified in @cmd
- * @mii: MII interface
- * @cmd: requested ethtool_link_ksettings
- *
- * The @cmd parameter is expected to have been cleared before calling
- * mii_ethtool_get_link_ksettings().
- *
- * Returns 0 for success, negative on error.
- */
-int mii_ethtool_get_link_ksettings(struct mii_if_info *mii,
- struct ethtool_link_ksettings *cmd)
-{
- struct net_device *dev = mii->dev;
- u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
- u32 nego, supported, advertising, lp_advertising;
-
- supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
- SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
- if (mii->supports_gmii)
- supported |= SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full;
-
- /* only supports twisted-pair */
- cmd->base.port = PORT_MII;
-
- /* this isn't fully supported at higher layers */
- cmd->base.phy_address = mii->phy_id;
- cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22;
-
- advertising = ADVERTISED_TP | ADVERTISED_MII;
-
- bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
- bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
- if (mii->supports_gmii) {
- ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
- stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
- }
- if (bmcr & BMCR_ANENABLE) {
- advertising |= ADVERTISED_Autoneg;
- cmd->base.autoneg = AUTONEG_ENABLE;
-
- advertising |= mii_get_an(mii, MII_ADVERTISE);
- if (mii->supports_gmii)
- advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
-
- if (bmsr & BMSR_ANEGCOMPLETE) {
- lp_advertising = mii_get_an(mii, MII_LPA);
- lp_advertising |=
- mii_stat1000_to_ethtool_lpa_t(stat1000);
- } else {
- lp_advertising = 0;
- }
-
- nego = advertising & lp_advertising;
-
- if (nego & (ADVERTISED_1000baseT_Full |
- ADVERTISED_1000baseT_Half)) {
- cmd->base.speed = SPEED_1000;
- cmd->base.duplex = !!(nego & ADVERTISED_1000baseT_Full);
- } else if (nego & (ADVERTISED_100baseT_Full |
- ADVERTISED_100baseT_Half)) {
- cmd->base.speed = SPEED_100;
- cmd->base.duplex = !!(nego & ADVERTISED_100baseT_Full);
- } else {
- cmd->base.speed = SPEED_10;
- cmd->base.duplex = !!(nego & ADVERTISED_10baseT_Full);
- }
- } else {
- cmd->base.autoneg = AUTONEG_DISABLE;
-
- cmd->base.speed = ((bmcr & BMCR_SPEED1000 &&
- (bmcr & BMCR_SPEED100) == 0) ?
- SPEED_1000 :
- ((bmcr & BMCR_SPEED100) ?
- SPEED_100 : SPEED_10));
- cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ?
- DUPLEX_FULL : DUPLEX_HALF;
-
- lp_advertising = 0;
- }
-
- mii->full_duplex = cmd->base.duplex;
-
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
- supported);
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
- advertising);
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
- lp_advertising);
-
- /* ignore maxtxpkt, maxrxpkt for now */
-
- return 0;
-}
-EXPORT_SYMBOL(mii_ethtool_get_link_ksettings);
-#endif /* LINUX_VERSION_IS_GEQ(4,6,0) */
-
-#if LINUX_VERSION_IS_GEQ(4,2,0)
-void __page_frag_cache_drain(struct page *page, unsigned int count)
-{
- VM_BUG_ON_PAGE(page_ref_count(page) == 0, page);
-
- if (page_ref_sub_and_test(page, count)) {
- unsigned int order = compound_order(page);
-
- /*
- * __free_pages_ok() is not exported so call
- * __free_pages() which decrements the ref counter
- * and increment the ref counter before.
- */
- page_ref_inc(page);
- __free_pages(page, order);
- }
-}
-EXPORT_SYMBOL_GPL(__page_frag_cache_drain);
-#endif
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