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openwrt/target/linux/mediatek/patches-4.9/0026-net-mediatek-backport-v4.10-driver.patch
John Crispin 1f068588ef mediatek: update to latest kernel patchset from v4.13-rc 
Signed-off-by: Muciri Gatimu <muciri@openmesh.com>
Signed-off-by: Shashidhar Lakkavalli <shashidhar.lakkavalli@openmesh.com>
Signed-off-by: John Crispin <john@phrozen.org>
2017-08-18 18:41:41 +02:00

1789 lines
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From 99d9d02a05df503184be094de336e7515fe3e235 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Thu, 10 Aug 2017 14:26:29 +0200
Subject: [PATCH 26/57] net: mediatek: backport v4.10 driver
Signed-off-by: John Crispin <john@phrozen.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 49 ++-
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 16 +-
drivers/net/ethernet/mediatek/mtk_hnat/Makefile | 4 +
drivers/net/ethernet/mediatek/mtk_hnat/hnat.c | 315 +++++++++++++++
drivers/net/ethernet/mediatek/mtk_hnat/hnat.h | 425 +++++++++++++++++++++
.../net/ethernet/mediatek/mtk_hnat/hnat_debugfs.c | 259 +++++++++++++
.../net/ethernet/mediatek/mtk_hnat/hnat_nf_hook.c | 289 ++++++++++++++
.../net/ethernet/mediatek/mtk_hnat/nf_hnat_mtk.h | 44 +++
8 files changed, 1378 insertions(+), 23 deletions(-)
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/Makefile
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/hnat.c
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/hnat.h
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/hnat_debugfs.c
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/hnat_nf_hook.c
create mode 100644 drivers/net/ethernet/mediatek/mtk_hnat/nf_hnat_mtk.h
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -462,8 +462,8 @@ static void mtk_stats_update(struct mtk_
}
}
-static struct rtnl_link_stats64 *mtk_get_stats64(struct net_device *dev,
- struct rtnl_link_stats64 *storage)
+static struct rtnl_link_stats64 * mtk_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *storage)
{
struct mtk_mac *mac = netdev_priv(dev);
struct mtk_hw_stats *hw_stats = mac->hw_stats;
@@ -615,7 +615,7 @@ static int mtk_tx_map(struct sk_buff *sk
struct mtk_mac *mac = netdev_priv(dev);
struct mtk_eth *eth = mac->hw;
struct mtk_tx_dma *itxd, *txd;
- struct mtk_tx_buf *tx_buf;
+ struct mtk_tx_buf *itx_buf, *tx_buf;
dma_addr_t mapped_addr;
unsigned int nr_frags;
int i, n_desc = 1;
@@ -629,8 +629,8 @@ static int mtk_tx_map(struct sk_buff *sk
fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT;
txd4 |= fport;
- tx_buf = mtk_desc_to_tx_buf(ring, itxd);
- memset(tx_buf, 0, sizeof(*tx_buf));
+ itx_buf = mtk_desc_to_tx_buf(ring, itxd);
+ memset(itx_buf, 0, sizeof(*itx_buf));
if (gso)
txd4 |= TX_DMA_TSO;
@@ -649,9 +649,11 @@ static int mtk_tx_map(struct sk_buff *sk
return -ENOMEM;
WRITE_ONCE(itxd->txd1, mapped_addr);
- tx_buf->flags |= MTK_TX_FLAGS_SINGLE0;
- dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
- dma_unmap_len_set(tx_buf, dma_len0, skb_headlen(skb));
+ itx_buf->flags |= MTK_TX_FLAGS_SINGLE0;
+ itx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 :
+ MTK_TX_FLAGS_FPORT1;
+ dma_unmap_addr_set(itx_buf, dma_addr0, mapped_addr);
+ dma_unmap_len_set(itx_buf, dma_len0, skb_headlen(skb));
/* TX SG offload */
txd = itxd;
@@ -687,11 +689,13 @@ static int mtk_tx_map(struct sk_buff *sk
last_frag * TX_DMA_LS0));
WRITE_ONCE(txd->txd4, fport);
- tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC;
tx_buf = mtk_desc_to_tx_buf(ring, txd);
memset(tx_buf, 0, sizeof(*tx_buf));
-
+ tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC;
tx_buf->flags |= MTK_TX_FLAGS_PAGE0;
+ tx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 :
+ MTK_TX_FLAGS_FPORT1;
+
dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
dma_unmap_len_set(tx_buf, dma_len0, frag_map_size);
frag_size -= frag_map_size;
@@ -700,7 +704,7 @@ static int mtk_tx_map(struct sk_buff *sk
}
/* store skb to cleanup */
- tx_buf->skb = skb;
+ itx_buf->skb = skb;
WRITE_ONCE(itxd->txd4, txd4);
WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) |
@@ -845,7 +849,7 @@ static int mtk_start_xmit(struct sk_buff
drop:
spin_unlock(&eth->page_lock);
stats->tx_dropped++;
- dev_kfree_skb(skb);
+ dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
@@ -1014,17 +1018,16 @@ static int mtk_poll_tx(struct mtk_eth *e
while ((cpu != dma) && budget) {
u32 next_cpu = desc->txd2;
- int mac;
+ int mac = 0;
desc = mtk_qdma_phys_to_virt(ring, desc->txd2);
if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0)
break;
- mac = (desc->txd4 >> TX_DMA_FPORT_SHIFT) &
- TX_DMA_FPORT_MASK;
- mac--;
-
tx_buf = mtk_desc_to_tx_buf(ring, desc);
+ if (tx_buf->flags & MTK_TX_FLAGS_FPORT1)
+ mac = 1;
+
skb = tx_buf->skb;
if (!skb) {
condition = 1;
@@ -1848,6 +1851,12 @@ static int mtk_hw_init(struct mtk_eth *e
/* GE2, Force 1000M/FD, FC ON */
mtk_w32(eth, MAC_MCR_FIXED_LINK, MTK_MAC_MCR(1));
+ /* Indicates CDM to parse the MTK special tag from CPU
+ * which also is working out for untag packets.
+ */
+ val = mtk_r32(eth, MTK_CDMQ_IG_CTRL);
+ mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL);
+
/* Enable RX VLan Offloading */
mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
@@ -1910,10 +1919,9 @@ static int __init mtk_init(struct net_de
/* If the mac address is invalid, use random mac address */
if (!is_valid_ether_addr(dev->dev_addr)) {
- random_ether_addr(dev->dev_addr);
+ eth_hw_addr_random(dev);
dev_err(eth->dev, "generated random MAC address %pM\n",
dev->dev_addr);
- dev->addr_assign_type = NET_ADDR_RANDOM;
}
return mtk_phy_connect(dev);
@@ -2247,7 +2255,6 @@ static const struct net_device_ops mtk_n
.ndo_set_mac_address = mtk_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_do_ioctl = mtk_do_ioctl,
- .ndo_change_mtu = eth_change_mtu,
.ndo_tx_timeout = mtk_tx_timeout,
.ndo_get_stats64 = mtk_get_stats64,
.ndo_fix_features = mtk_fix_features,
@@ -2320,6 +2327,8 @@ static int mtk_add_mac(struct mtk_eth *e
eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops;
eth->netdev[id]->irq = eth->irq[0];
+ eth->netdev[id]->dev.of_node = np;
+
return 0;
free_netdev:
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -70,6 +70,10 @@
/* Frame Engine Interrupt Grouping Register */
#define MTK_FE_INT_GRP 0x20
+/* CDMP Ingress Control Register */
+#define MTK_CDMQ_IG_CTRL 0x1400
+#define MTK_CDMQ_STAG_EN BIT(0)
+
/* CDMP Exgress Control Register */
#define MTK_CDMP_EG_CTRL 0x404
@@ -406,12 +410,18 @@ struct mtk_hw_stats {
struct u64_stats_sync syncp;
};
-/* PDMA descriptor can point at 1-2 segments. This enum allows us to track how
- * memory was allocated so that it can be freed properly
- */
enum mtk_tx_flags {
+ /* PDMA descriptor can point at 1-2 segments. This enum allows us to
+ * track how memory was allocated so that it can be freed properly.
+ */
MTK_TX_FLAGS_SINGLE0 = 0x01,
MTK_TX_FLAGS_PAGE0 = 0x02,
+
+ /* MTK_TX_FLAGS_FPORTx allows tracking which port the transmitted
+ * SKB out instead of looking up through hardware TX descriptor.
+ */
+ MTK_TX_FLAGS_FPORT0 = 0x04,
+ MTK_TX_FLAGS_FPORT1 = 0x08,
};
/* This enum allows us to identify how the clock is defined on the array of the
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/Makefile
@@ -0,0 +1,4 @@
+ccflags-y=-Werror
+
+obj-$(CONFIG_NET_MEDIATEK_HNAT) += mtkhnat.o
+mtkhnat-objs := hnat.o hnat_nf_hook.o hnat_debugfs.o
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/hnat.c
@@ -0,0 +1,315 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
+ * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/if.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "hnat.h"
+
+struct hnat_priv *host;
+
+static void cr_set_bits(void __iomem * reg, u32 bs)
+{
+ u32 val = readl(reg);
+
+ val |= bs;
+ writel(val, reg);
+}
+
+static void cr_clr_bits(void __iomem * reg, u32 bs)
+{
+ u32 val = readl(reg);
+
+ val &= ~bs;
+ writel(val, reg);
+}
+
+static void cr_set_field(void __iomem * reg, u32 field, u32 val)
+{
+ unsigned int tv = readl(reg);
+
+ tv &= ~field;
+ tv |= ((val) << (ffs((unsigned int)field) - 1));
+ writel(tv, reg);
+}
+
+static int hnat_start(void)
+{
+ u32 foe_table_sz;
+
+ /* mapp the FOE table */
+ foe_table_sz = FOE_4TB_SIZ * sizeof(struct foe_entry);
+ host->foe_table_cpu =
+ dma_alloc_coherent(host->dev, foe_table_sz, &host->foe_table_dev,
+ GFP_KERNEL);
+ if (!host->foe_table_cpu)
+ return -1;
+
+ writel(host->foe_table_dev, host->ppe_base + PPE_TB_BASE);
+ memset(host->foe_table_cpu, 0, foe_table_sz);
+
+ /* setup hashing */
+ cr_set_field(host->ppe_base + PPE_TB_CFG, TB_ETRY_NUM, TABLE_4K);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, HASH_MODE, HASH_MODE_1);
+ writel(HASH_SEED_KEY, host->ppe_base + PPE_HASH_SEED);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, XMODE, 0);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, TB_ENTRY_SIZE, ENTRY_64B);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, SMA, SMA_FWD_CPU_BUILD_ENTRY);
+
+ /* set ip proto */
+ writel(0xFFFFFFFF, host->ppe_base + PPE_IP_PROT_CHK);
+
+ /* setup caching */
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_X_MODE, 1);
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_X_MODE, 0);
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_EN, 1);
+
+ /* enable FOE */
+ cr_set_bits(host->ppe_base + PPE_FLOW_CFG,
+ BIT_IPV4_NAT_EN | BIT_IPV4_NAPT_EN |
+ BIT_IPV4_NAT_FRAG_EN | BIT_IPV4_HASH_GREK);
+
+ /* setup FOE aging */
+ cr_set_field(host->ppe_base + PPE_TB_CFG, NTU_AGE, 1);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, UNBD_AGE, 1);
+ cr_set_field(host->ppe_base + PPE_UNB_AGE, UNB_MNP, 1000);
+ cr_set_field(host->ppe_base + PPE_UNB_AGE, UNB_DLTA, 3);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, TCP_AGE, 1);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, UDP_AGE, 1);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, FIN_AGE, 1);
+ cr_set_field(host->ppe_base + PPE_BND_AGE_0, UDP_DLTA, 5);
+ cr_set_field(host->ppe_base + PPE_BND_AGE_0, NTU_DLTA, 5);
+ cr_set_field(host->ppe_base + PPE_BND_AGE_1, FIN_DLTA, 5);
+ cr_set_field(host->ppe_base + PPE_BND_AGE_1, TCP_DLTA, 5);
+
+ /* setup FOE ka */
+ cr_set_field(host->ppe_base + PPE_TB_CFG, KA_CFG, 3);
+ cr_set_field(host->ppe_base + PPE_KA, KA_T, 1);
+ cr_set_field(host->ppe_base + PPE_KA, TCP_KA, 1);
+ cr_set_field(host->ppe_base + PPE_KA, UDP_KA, 1);
+ cr_set_field(host->ppe_base + PPE_BIND_LMT_1, NTU_KA, 1);
+
+ /* setup FOE rate limit */
+ cr_set_field(host->ppe_base + PPE_BIND_LMT_0, QURT_LMT, 16383);
+ cr_set_field(host->ppe_base + PPE_BIND_LMT_0, HALF_LMT, 16383);
+ cr_set_field(host->ppe_base + PPE_BIND_LMT_1, FULL_LMT, 16383);
+ cr_set_field(host->ppe_base + PPE_BNDR, BIND_RATE, 1);
+
+ /* setup FOE cf gen */
+ cr_set_field(host->ppe_base + PPE_GLO_CFG, PPE_EN, 1);
+ writel(0, host->ppe_base + PPE_DFT_CPORT); // pdma
+ //writel(0x55555555, host->ppe_base + PPE_DFT_CPORT); //qdma
+ cr_set_field(host->ppe_base + PPE_GLO_CFG, TTL0_DRP, 1);
+
+ /* fwd packets from gmac to PPE */
+ cr_clr_bits(host->fe_base + GDMA1_FWD_CFG, GDM1_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA1_FWD_CFG,
+ BITS_GDM1_ALL_FRC_P_PPE);
+ cr_clr_bits(host->fe_base + GDMA2_FWD_CFG, GDM2_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA2_FWD_CFG,
+ BITS_GDM2_ALL_FRC_P_PPE);
+
+ dev_info(host->dev, "hwnat start\n");
+
+ return 0;
+}
+
+static int ppe_busy_wait(void)
+{
+ unsigned long t_start = jiffies;
+ u32 r = 0;
+
+ while (1) {
+ r = readl((host->ppe_base + 0x0));
+ if (!(r & BIT(31)))
+ return 0;
+ if (time_after(jiffies, t_start + HZ))
+ break;
+ usleep_range(10, 20);
+ }
+
+ dev_err(host->dev, "ppe:%s timeout\n", __func__);
+
+ return -1;
+}
+
+static void hnat_stop(void)
+{
+ u32 foe_table_sz;
+ struct foe_entry *entry, *end;
+ u32 r1 = 0, r2 = 0;
+
+ /* discard all traffic while we disable the PPE */
+ cr_clr_bits(host->fe_base + GDMA1_FWD_CFG, GDM1_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA1_FWD_CFG,
+ BITS_GDM1_ALL_FRC_P_DISCARD);
+ cr_clr_bits(host->fe_base + GDMA2_FWD_CFG, GDM2_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA2_FWD_CFG,
+ BITS_GDM2_ALL_FRC_P_DISCARD);
+
+ if (ppe_busy_wait()) {
+ reset_control_reset(host->rstc);
+ msleep(2000);
+ return;
+ }
+
+ entry = host->foe_table_cpu;
+ end = host->foe_table_cpu + FOE_4TB_SIZ;
+ while (entry < end) {
+ entry->bfib1.state = INVALID;
+ entry++;
+ }
+
+ /* disable caching */
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_X_MODE, 1);
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_X_MODE, 0);
+ cr_set_field(host->ppe_base + PPE_CAH_CTRL, CAH_EN, 0);
+
+ /* flush cache has to be ahead of hnat diable --*/
+ cr_set_field(host->ppe_base + PPE_GLO_CFG, PPE_EN, 0);
+
+ /* disable FOE */
+ cr_clr_bits(host->ppe_base + PPE_FLOW_CFG,
+ BIT_IPV4_NAPT_EN | BIT_IPV4_NAT_EN |
+ BIT_IPV4_NAT_FRAG_EN |
+ BIT_FUC_FOE | BIT_FMC_FOE | BIT_FUC_FOE);
+
+ /* disable FOE aging */
+ cr_set_field(host->ppe_base + PPE_TB_CFG, NTU_AGE, 0);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, UNBD_AGE, 0);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, TCP_AGE, 0);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, UDP_AGE, 0);
+ cr_set_field(host->ppe_base + PPE_TB_CFG, FIN_AGE, 0);
+
+ r1 = readl(host->fe_base + 0x100);
+ r2 = readl(host->fe_base + 0x10c);
+
+ dev_info(host->dev, "0x100 = 0x%x, 0x10c = 0x%x\n", r1, r2);
+
+ if (((r1 & 0xff00) >> 0x8) >= (r1 & 0xff) ||
+ ((r1 & 0xff00) >> 0x8) >= (r2 & 0xff)) {
+ dev_info(host->dev, "reset pse\n");
+ writel(0x1, host->fe_base + 0x4);
+ }
+
+ /* free the FOE table */
+ foe_table_sz = FOE_4TB_SIZ * sizeof(struct foe_entry);
+ dma_free_coherent(NULL, foe_table_sz, host->foe_table_cpu,
+ host->foe_table_dev);
+ writel(0, host->ppe_base + PPE_TB_BASE);
+
+ if (ppe_busy_wait()) {
+ reset_control_reset(host->rstc);
+ msleep(2000);
+ return;
+ }
+
+ /* send all traffic back to the DMA engine */
+ cr_clr_bits(host->fe_base + GDMA1_FWD_CFG, GDM1_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA1_FWD_CFG,
+ BITS_GDM1_ALL_FRC_P_CPU_PDMA);
+ cr_clr_bits(host->fe_base + GDMA2_FWD_CFG, GDM2_ALL_FRC_MASK);
+ cr_set_bits(host->fe_base + GDMA2_FWD_CFG,
+ BITS_GDM2_ALL_FRC_P_CPU_PDMA);
+}
+
+static int hnat_probe(struct platform_device *pdev)
+{
+ int err = 0;
+ struct resource *res ;
+ const char *name;
+ struct device_node *np;
+
+ host = devm_kzalloc(&pdev->dev, sizeof(struct hnat_priv), GFP_KERNEL);
+ if (!host)
+ return -ENOMEM;
+
+ host->dev = &pdev->dev;
+ np = host->dev->of_node;
+
+ err = of_property_read_string(np, "mtketh-wan", &name);
+ if (err < 0)
+ return -EINVAL;
+
+ strncpy(host->wan, (char *)name, IFNAMSIZ);
+ dev_info(&pdev->dev, "wan = %s\n", host->wan);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENOENT;
+
+ host->fe_base = devm_ioremap_nocache(&pdev->dev, res->start,
+ res->end - res->start + 1);
+ if (!host->fe_base)
+ return -EADDRNOTAVAIL;
+
+ host->ppe_base = host->fe_base + 0xe00;
+ err = hnat_init_debugfs(host);
+ if (err)
+ return err;
+
+ host->rstc = devm_reset_control_get(&pdev->dev, NULL);
+ if (IS_ERR(host->rstc))
+ return PTR_ERR(host->rstc);
+
+ err = hnat_start();
+ if (err)
+ goto err_out;
+
+ err = hnat_register_nf_hooks();
+ if (err)
+ goto err_out;
+
+ return 0;
+
+err_out:
+ hnat_stop();
+ hnat_deinit_debugfs(host);
+ return err;
+}
+
+static int hnat_remove(struct platform_device *pdev)
+{
+ hnat_unregister_nf_hooks();
+ hnat_stop();
+ hnat_deinit_debugfs(host);
+
+ return 0;
+}
+
+const struct of_device_id of_hnat_match[] = {
+ { .compatible = "mediatek,mt7623-hnat" },
+ {},
+};
+
+static struct platform_driver hnat_driver = {
+ .probe = hnat_probe,
+ .remove = hnat_remove,
+ .driver = {
+ .name = "mediatek_soc_hnat",
+ .of_match_table = of_hnat_match,
+ },
+};
+
+module_platform_driver(hnat_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
+MODULE_AUTHOR("John Crispin <john@phrozen.org>");
+MODULE_DESCRIPTION("Mediatek Hardware NAT");
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/hnat.h
@@ -0,0 +1,425 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
+ * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/debugfs.h>
+#include <linux/string.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+
+/*--------------------------------------------------------------------------*/
+/* Register Offset*/
+/*--------------------------------------------------------------------------*/
+#define PPE_GLO_CFG 0x00
+#define PPE_FLOW_CFG 0x04
+#define PPE_IP_PROT_CHK 0x08
+#define PPE_IP_PROT_0 0x0C
+#define PPE_IP_PROT_1 0x10
+#define PPE_IP_PROT_2 0x14
+#define PPE_IP_PROT_3 0x18
+#define PPE_TB_CFG 0x1C
+#define PPE_TB_BASE 0x20
+#define PPE_TB_USED 0x24
+#define PPE_BNDR 0x28
+#define PPE_BIND_LMT_0 0x2C
+#define PPE_BIND_LMT_1 0x30
+#define PPE_KA 0x34
+#define PPE_UNB_AGE 0x38
+#define PPE_BND_AGE_0 0x3C
+#define PPE_BND_AGE_1 0x40
+#define PPE_HASH_SEED 0x44
+#define PPE_DFT_CPORT 0x48
+#define PPE_MCAST_PPSE 0x84
+#define PPE_MCAST_L_0 0x88
+#define PPE_MCAST_H_0 0x8C
+#define PPE_MCAST_L_1 0x90
+#define PPE_MCAST_H_1 0x94
+#define PPE_MCAST_L_2 0x98
+#define PPE_MCAST_H_2 0x9C
+#define PPE_MCAST_L_3 0xA0
+#define PPE_MCAST_H_3 0xA4
+#define PPE_MCAST_L_4 0xA8
+#define PPE_MCAST_H_4 0xAC
+#define PPE_MCAST_L_5 0xB0
+#define PPE_MCAST_H_5 0xB4
+#define PPE_MCAST_L_6 0xBC
+#define PPE_MCAST_H_6 0xC0
+#define PPE_MCAST_L_7 0xC4
+#define PPE_MCAST_H_7 0xC8
+#define PPE_MCAST_L_8 0xCC
+#define PPE_MCAST_H_8 0xD0
+#define PPE_MCAST_L_9 0xD4
+#define PPE_MCAST_H_9 0xD8
+#define PPE_MCAST_L_A 0xDC
+#define PPE_MCAST_H_A 0xE0
+#define PPE_MCAST_L_B 0xE4
+#define PPE_MCAST_H_B 0xE8
+#define PPE_MCAST_L_C 0xEC
+#define PPE_MCAST_H_C 0xF0
+#define PPE_MCAST_L_D 0xF4
+#define PPE_MCAST_H_D 0xF8
+#define PPE_MCAST_L_E 0xFC
+#define PPE_MCAST_H_E 0xE0
+#define PPE_MCAST_L_F 0x100
+#define PPE_MCAST_H_F 0x104
+#define PPE_MTU_DRP 0x108
+#define PPE_MTU_VLYR_0 0x10C
+#define PPE_MTU_VLYR_1 0x110
+#define PPE_MTU_VLYR_2 0x114
+#define PPE_VPM_TPID 0x118
+#define PPE_CAH_CTRL 0x120
+#define PPE_CAH_TAG_SRH 0x124
+#define PPE_CAH_LINE_RW 0x128
+#define PPE_CAH_WDATA 0x12C
+#define PPE_CAH_RDATA 0x130
+
+#define GDMA1_FWD_CFG 0x500
+#define GDMA2_FWD_CFG 0x1500
+/*--------------------------------------------------------------------------*/
+/* Register Mask*/
+/*--------------------------------------------------------------------------*/
+/* PPE_TB_CFG mask */
+#define TB_ETRY_NUM (0x7 << 0) /* RW */
+#define TB_ENTRY_SIZE (0x1 << 3) /* RW */
+#define SMA (0x3 << 4) /* RW */
+#define NTU_AGE (0x1 << 7) /* RW */
+#define UNBD_AGE (0x1 << 8) /* RW */
+#define TCP_AGE (0x1 << 9) /* RW */
+#define UDP_AGE (0x1 << 10) /* RW */
+#define FIN_AGE (0x1 << 11) /* RW */
+#define KA_CFG (0x3<< 12)
+#define HASH_MODE (0x3 << 14) /* RW */
+#define XMODE (0x3 << 18) /* RW */
+
+/*PPE_CAH_CTRL mask*/
+#define CAH_EN (0x1 << 0) /* RW */
+#define CAH_X_MODE (0x1 << 9) /* RW */
+
+/*PPE_UNB_AGE mask*/
+#define UNB_DLTA (0xff << 0) /* RW */
+#define UNB_MNP (0xffff << 16) /* RW */
+
+/*PPE_BND_AGE_0 mask*/
+#define UDP_DLTA (0xffff << 0) /* RW */
+#define NTU_DLTA (0xffff << 16) /* RW */
+
+/*PPE_BND_AGE_1 mask*/
+#define TCP_DLTA (0xffff << 0) /* RW */
+#define FIN_DLTA (0xffff << 16) /* RW */
+
+/*PPE_KA mask*/
+#define KA_T (0xffff << 0) /* RW */
+#define TCP_KA (0xff << 16) /* RW */
+#define UDP_KA (0xff << 24) /* RW */
+
+/*PPE_BIND_LMT_0 mask*/
+#define QURT_LMT (0x3ff << 0) /* RW */
+#define HALF_LMT (0x3ff << 16) /* RW */
+
+/*PPE_BIND_LMT_1 mask*/
+#define FULL_LMT (0x3fff << 0) /* RW */
+#define NTU_KA (0xff << 16) /* RW */
+
+/*PPE_BNDR mask*/
+#define BIND_RATE (0xffff << 0) /* RW */
+#define PBND_RD_PRD (0xffff << 16) /* RW */
+
+/*PPE_GLO_CFG mask*/
+#define PPE_EN (0x1 << 0) /* RW */
+#define TTL0_DRP (0x1 << 4) /* RW */
+
+/*GDMA1_FWD_CFG mask */
+#define GDM1_UFRC_MASK (0x7 << 12) /* RW */
+#define GDM1_BFRC_MASK (0x7 << 8) /*RW*/
+#define GDM1_MFRC_MASK (0x7 << 4) /*RW*/
+#define GDM1_OFRC_MASK (0x7 << 0) /*RW*/
+#define GDM1_ALL_FRC_MASK (GDM1_UFRC_MASK | GDM1_BFRC_MASK | GDM1_MFRC_MASK | GDM1_OFRC_MASK)
+
+#define GDM2_UFRC_MASK (0x7 << 12) /* RW */
+#define GDM2_BFRC_MASK (0x7 << 8) /*RW*/
+#define GDM2_MFRC_MASK (0x7 << 4) /*RW*/
+#define GDM2_OFRC_MASK (0x7 << 0) /*RW*/
+#define GDM2_ALL_FRC_MASK (GDM2_UFRC_MASK | GDM2_BFRC_MASK | GDM2_MFRC_MASK | GDM2_OFRC_MASK)
+
+/*--------------------------------------------------------------------------*/
+/* Descriptor Structure */
+/*--------------------------------------------------------------------------*/
+#define HNAT_SKB_CB(__skb) ((struct hnat_skb_cb *)&((__skb)->cb[40]))
+struct hnat_skb_cb {
+ __u16 iif;
+};
+
+struct hnat_unbind_info_blk {
+ u32 time_stamp:8;
+ u32 pcnt:16; /* packet count */
+ u32 preb:1;
+ u32 pkt_type:3;
+ u32 state:2;
+ u32 udp:1;
+ u32 sta:1; /* static entry */
+} __attribute__ ((packed));
+
+struct hnat_bind_info_blk {
+ u32 time_stamp:15;
+ u32 ka:1; /* keep alive */
+ u32 vlan_layer:3;
+ u32 psn:1; /* egress packet has PPPoE session */
+ u32 vpm:1; /* 0:ethertype remark, 1:0x8100(CR default) */
+ u32 ps:1; /* packet sampling */
+ u32 cah:1; /* cacheable flag */
+ u32 rmt:1; /* remove tunnel ip header (6rd/dslite only) */
+ u32 ttl:1;
+ u32 pkt_type:3;
+ u32 state:2;
+ u32 udp:1;
+ u32 sta:1; /* static entry */
+} __attribute__ ((packed));
+
+struct hnat_info_blk2 {
+ u32 qid:4; /* QID in Qos Port */
+ u32 fqos:1; /* force to PSE QoS port */
+ u32 dp:3; /* force to PSE port x
+ 0:PSE,1:GSW, 2:GMAC,4:PPE,5:QDMA,7=DROP */
+ u32 mcast:1; /* multicast this packet to CPU */
+ u32 pcpl:1; /* OSBN */
+ u32 mlen:1; /* 0:post 1:pre packet length in meter */
+ u32 alen:1; /* 0:post 1:pre packet length in accounting */
+ u32 port_mg:6; /* port meter group */
+ u32 port_ag:6; /* port account group */
+ u32 dscp:8; /* DSCP value */
+} __attribute__ ((packed));
+
+struct hnat_ipv4_hnapt {
+ union {
+ struct hnat_bind_info_blk bfib1;
+ struct hnat_unbind_info_blk udib1;
+ u32 info_blk1;
+ };
+ u32 sip;
+ u32 dip;
+ u16 dport;
+ u16 sport;
+ union {
+ struct hnat_info_blk2 iblk2;
+ u32 info_blk2;
+ };
+ u32 new_sip;
+ u32 new_dip;
+ u16 new_dport;
+ u16 new_sport;
+ u32 resv1;
+ u32 resv2;
+ u32 resv3:26;
+ u32 act_dp:6; /* UDF */
+ u16 vlan1;
+ u16 etype;
+ u32 dmac_hi;
+ u16 vlan2;
+ u16 dmac_lo;
+ u32 smac_hi;
+ u16 pppoe_id;
+ u16 smac_lo;
+} __attribute__ ((packed));
+
+struct foe_entry {
+ union {
+ struct hnat_unbind_info_blk udib1;
+ struct hnat_bind_info_blk bfib1;
+ struct hnat_ipv4_hnapt ipv4_hnapt;
+ };
+};
+
+#define HNAT_AC_BYTE_LO(x) (0x2000 + (x * 16))
+#define HNAT_AC_BYTE_HI(x) (0x2004 + (x * 16))
+#define HNAT_AC_PACKET(x) (0x2008 + (x * 16))
+#define HNAT_COUNTER_MAX 64
+#define HNAT_AC_TIMER_INTERVAL (HZ)
+
+struct hnat_accounting {
+ u64 bytes;
+ u64 packets;
+};
+
+struct hnat_priv {
+ struct device *dev;
+ void __iomem *fe_base;
+ void __iomem *ppe_base;
+ struct foe_entry *foe_table_cpu;
+ dma_addr_t foe_table_dev;
+ u8 enable;
+ u8 enable1;
+ struct dentry *root;
+ struct debugfs_regset32 *regset;
+
+ struct timer_list ac_timer;
+ struct hnat_accounting acct[HNAT_COUNTER_MAX];
+
+ /*devices we plays for*/
+ char wan[IFNAMSIZ];
+
+ struct reset_control *rstc;
+};
+
+enum FoeEntryState {
+ INVALID = 0,
+ UNBIND = 1,
+ BIND = 2,
+ FIN = 3
+};
+/*--------------------------------------------------------------------------*/
+/* Common Definition*/
+/*--------------------------------------------------------------------------*/
+
+#define FOE_4TB_SIZ 4096
+#define HASH_SEED_KEY 0x12345678
+
+/*PPE_TB_CFG value*/
+#define ENTRY_80B 1
+#define ENTRY_64B 0
+#define TABLE_1K 0
+#define TABLE_2K 1
+#define TABLE_4K 2
+#define TABLE_8K 3
+#define TABLE_16K 4
+#define SMA_DROP 0 /* Drop the packet */
+#define SMA_DROP2 1 /* Drop the packet */
+#define SMA_ONLY_FWD_CPU 2 /* Only Forward to CPU */
+#define SMA_FWD_CPU_BUILD_ENTRY 3 /* Forward to CPU and build new FOE entry */
+#define HASH_MODE_0 0
+#define HASH_MODE_1 1
+#define HASH_MODE_2 2
+#define HASH_MODE_3 3
+
+/*PPE_FLOW_CFG*/
+#define BIT_FUC_FOE BIT(2)
+#define BIT_FMC_FOE BIT(1)
+#define BIT_FBC_FOE BIT(0)
+#define BIT_IPV4_NAT_EN BIT(12)
+#define BIT_IPV4_NAPT_EN BIT(13)
+#define BIT_IPV4_NAT_FRAG_EN BIT(17)
+#define BIT_IPV4_HASH_GREK BIT(19)
+
+/*GDMA1_FWD_CFG value */
+#define BITS_GDM1_UFRC_P_PPE (NR_PPE_PORT << 12)
+#define BITS_GDM1_BFRC_P_PPE (NR_PPE_PORT << 8)
+#define BITS_GDM1_MFRC_P_PPE (NR_PPE_PORT << 4)
+#define BITS_GDM1_OFRC_P_PPE (NR_PPE_PORT << 0)
+#define BITS_GDM1_ALL_FRC_P_PPE (BITS_GDM1_UFRC_P_PPE | BITS_GDM1_BFRC_P_PPE | BITS_GDM1_MFRC_P_PPE | BITS_GDM1_OFRC_P_PPE)
+
+#define BITS_GDM1_UFRC_P_CPU_PDMA (NR_PDMA_PORT << 12)
+#define BITS_GDM1_BFRC_P_CPU_PDMA (NR_PDMA_PORT << 8)
+#define BITS_GDM1_MFRC_P_CPU_PDMA (NR_PDMA_PORT << 4)
+#define BITS_GDM1_OFRC_P_CPU_PDMA (NR_PDMA_PORT << 0)
+#define BITS_GDM1_ALL_FRC_P_CPU_PDMA (BITS_GDM1_UFRC_P_CPU_PDMA | BITS_GDM1_BFRC_P_CPU_PDMA | BITS_GDM1_MFRC_P_CPU_PDMA | BITS_GDM1_OFRC_P_CPU_PDMA)
+
+#define BITS_GDM1_UFRC_P_CPU_QDMA (NR_QDMA_PORT << 12)
+#define BITS_GDM1_BFRC_P_CPU_QDMA (NR_QDMA_PORT << 8)
+#define BITS_GDM1_MFRC_P_CPU_QDMA (NR_QDMA_PORT << 4)
+#define BITS_GDM1_OFRC_P_CPU_QDMA (NR_QDMA_PORT << 0)
+#define BITS_GDM1_ALL_FRC_P_CPU_QDMA (BITS_GDM1_UFRC_P_CPU_QDMA | BITS_GDM1_BFRC_P_CPU_QDMA | BITS_GDM1_MFRC_P_CPU_QDMA | BITS_GDM1_OFRC_P_CPU_QDMA)
+
+#define BITS_GDM1_UFRC_P_DISCARD (NR_DISCARD << 12)
+#define BITS_GDM1_BFRC_P_DISCARD (NR_DISCARD << 8)
+#define BITS_GDM1_MFRC_P_DISCARD (NR_DISCARD << 4)
+#define BITS_GDM1_OFRC_P_DISCARD (NR_DISCARD << 0)
+#define BITS_GDM1_ALL_FRC_P_DISCARD (BITS_GDM1_UFRC_P_DISCARD | BITS_GDM1_BFRC_P_DISCARD | BITS_GDM1_MFRC_P_DISCARD | BITS_GDM1_OFRC_P_DISCARD)
+
+#define BITS_GDM2_UFRC_P_PPE (NR_PPE_PORT << 12)
+#define BITS_GDM2_BFRC_P_PPE (NR_PPE_PORT << 8)
+#define BITS_GDM2_MFRC_P_PPE (NR_PPE_PORT << 4)
+#define BITS_GDM2_OFRC_P_PPE (NR_PPE_PORT << 0)
+#define BITS_GDM2_ALL_FRC_P_PPE (BITS_GDM2_UFRC_P_PPE | BITS_GDM2_BFRC_P_PPE | BITS_GDM2_MFRC_P_PPE | BITS_GDM2_OFRC_P_PPE)
+
+#define BITS_GDM2_UFRC_P_CPU_PDMA (NR_PDMA_PORT << 12)
+#define BITS_GDM2_BFRC_P_CPU_PDMA (NR_PDMA_PORT << 8)
+#define BITS_GDM2_MFRC_P_CPU_PDMA (NR_PDMA_PORT << 4)
+#define BITS_GDM2_OFRC_P_CPU_PDMA (NR_PDMA_PORT << 0)
+#define BITS_GDM2_ALL_FRC_P_CPU_PDMA (BITS_GDM2_UFRC_P_CPU_PDMA | BITS_GDM2_BFRC_P_CPU_PDMA | BITS_GDM2_MFRC_P_CPU_PDMA | BITS_GDM2_OFRC_P_CPU_PDMA)
+
+#define BITS_GDM2_UFRC_P_CPU_QDMA (NR_QDMA_PORT << 12)
+#define BITS_GDM2_BFRC_P_CPU_QDMA (NR_QDMA_PORT << 8)
+#define BITS_GDM2_MFRC_P_CPU_QDMA (NR_QDMA_PORT << 4)
+#define BITS_GDM2_OFRC_P_CPU_QDMA (NR_QDMA_PORT << 0)
+#define BITS_GDM2_ALL_FRC_P_CPU_QDMA (BITS_GDM2_UFRC_P_CPU_QDMA | BITS_GDM2_BFRC_P_CPU_QDMA | BITS_GDM2_MFRC_P_CPU_QDMA | BITS_GDM2_OFRC_P_CPU_QDMA)
+
+#define BITS_GDM2_UFRC_P_DISCARD (NR_DISCARD << 12)
+#define BITS_GDM2_BFRC_P_DISCARD (NR_DISCARD << 8)
+#define BITS_GDM2_MFRC_P_DISCARD (NR_DISCARD << 4)
+#define BITS_GDM2_OFRC_P_DISCARD (NR_DISCARD << 0)
+#define BITS_GDM2_ALL_FRC_P_DISCARD (BITS_GDM2_UFRC_P_DISCARD | BITS_GDM2_BFRC_P_DISCARD | BITS_GDM2_MFRC_P_DISCARD | BITS_GDM2_OFRC_P_DISCARD)
+
+#define hnat_is_enabled(host) (host->enable)
+#define hnat_enabled(host) (host->enable = 1)
+#define hnat_disabled(host) (host->enable = 0)
+#define hnat_is_enabled1(host) (host->enable1)
+#define hnat_enabled1(host) (host->enable1 = 1)
+#define hnat_disabled1(host) (host->enable1 = 0)
+
+#define entry_hnat_is_bound(e) (e->bfib1.state == BIND)
+#define entry_hnat_state(e) (e->bfib1.state)
+
+#define skb_hnat_is_hashed(skb) (skb_hnat_entry(skb)!=0x3fff && skb_hnat_entry(skb)< FOE_4TB_SIZ)
+#define FROM_GE_LAN(skb) (HNAT_SKB_CB(skb)->iif == FOE_MAGIC_GE_LAN)
+#define FROM_GE_WAN(skb) (HNAT_SKB_CB(skb)->iif == FOE_MAGIC_GE_WAN)
+#define FROM_GE_PPD(skb) (HNAT_SKB_CB(skb)->iif == FOE_MAGIC_GE_PPD)
+#define FOE_MAGIC_GE_WAN 0x7273
+#define FOE_MAGIC_GE_LAN 0x7272
+#define FOE_INVALID 0xffff
+
+#define TCP_FIN_SYN_RST 0x0C /* Ingress packet is TCP fin/syn/rst (for IPv4 NAPT/DS-Lite or IPv6 5T-route/6RD) */
+#define UN_HIT 0x0D/* FOE Un-hit */
+#define HIT_UNBIND 0x0E/* FOE Hit unbind */
+#define HIT_UNBIND_RATE_REACH 0xf
+#define HNAT_HIT_BIND_OLD_DUP_HDR 0x15
+#define HNAT_HIT_BIND_FORCE_TO_CPU 0x16
+
+#define HIT_BIND_KEEPALIVE_MC_NEW_HDR 0x14
+#define HIT_BIND_KEEPALIVE_DUP_OLD_HDR 0x15
+#define IPV4_HNAPT 0
+#define IPV4_HNAT 1
+#define IP_FORMAT(addr) \
+ ((unsigned char *)&addr)[3], \
+ ((unsigned char *)&addr)[2], \
+ ((unsigned char *)&addr)[1], \
+ ((unsigned char *)&addr)[0]
+
+/*PSE Ports*/
+#define NR_PDMA_PORT 0
+#define NR_GMAC1_PORT 1
+#define NR_GMAC2_PORT 2
+#define NR_PPE_PORT 4
+#define NR_QDMA_PORT 5
+#define NR_DISCARD 7
+#define IS_LAN(dev) (!strncmp(dev->name, "lan", 3))
+#define IS_WAN(dev) (!strcmp(dev->name, host->wan))
+#define IS_BR(dev) (!strncmp(dev->name, "br", 2))
+#define IS_IPV4_HNAPT(x) (((x)->bfib1.pkt_type == IPV4_HNAPT) ? 1: 0)
+#define IS_IPV4_HNAT(x) (((x)->bfib1.pkt_type == IPV4_HNAT) ? 1 : 0)
+#define IS_IPV4_GRP(x) (IS_IPV4_HNAPT(x) | IS_IPV4_HNAT(x))
+
+#define es(entry) (entry_state[entry->bfib1.state])
+#define ei(entry, end) (FOE_4TB_SIZ - (int)(end - entry))
+#define pt(entry) (packet_type[entry->ipv4_hnapt.bfib1.pkt_type])
+#define ipv4_smac(mac,e) ({mac[0]=e->ipv4_hnapt.smac_hi[3]; mac[1]=e->ipv4_hnapt.smac_hi[2];\
+ mac[2]=e->ipv4_hnapt.smac_hi[1]; mac[3]=e->ipv4_hnapt.smac_hi[0];\
+ mac[4]=e->ipv4_hnapt.smac_lo[1]; mac[5]=e->ipv4_hnapt.smac_lo[0];})
+#define ipv4_dmac(mac,e) ({mac[0]=e->ipv4_hnapt.dmac_hi[3]; mac[1]=e->ipv4_hnapt.dmac_hi[2];\
+ mac[2]=e->ipv4_hnapt.dmac_hi[1]; mac[3]=e->ipv4_hnapt.dmac_hi[0];\
+ mac[4]=e->ipv4_hnapt.dmac_lo[1]; mac[5]=e->ipv4_hnapt.dmac_lo[0];})
+
+extern struct hnat_priv *host;
+
+extern void hnat_deinit_debugfs(struct hnat_priv *h);
+extern int __init hnat_init_debugfs(struct hnat_priv *h);
+extern int hnat_register_nf_hooks(void);
+extern void hnat_unregister_nf_hooks(void);
+
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/hnat_debugfs.c
@@ -0,0 +1,489 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
+ * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+
+#include "hnat.h"
+
+static const char *entry_state[] = {
+ "INVALID",
+ "UNBIND",
+ "BIND",
+ "FIN"
+};
+
+static const char *packet_type[] = {
+ "IPV4_HNAPT",
+ "IPV4_HNAT",
+ "IPV6_1T_ROUTE",
+ "IPV4_DSLITE",
+ "IPV6_3T_ROUTE",
+ "IPV6_5T_ROUTE",
+ "IPV6_6RD",
+};
+
+static int hnat_debug_show(struct seq_file *m, void *private)
+{
+ struct hnat_priv *h = host;
+ struct foe_entry *entry, *end;
+
+ entry = h->foe_table_cpu;
+ end = h->foe_table_cpu + FOE_4TB_SIZ;
+ while (entry < end) {
+ if (!entry->bfib1.state) {
+ entry++;
+ continue;
+ }
+
+ if (IS_IPV4_HNAPT(entry)) {
+ __be32 saddr = htonl(entry->ipv4_hnapt.sip);
+ __be32 daddr = htonl(entry->ipv4_hnapt.dip);
+ __be32 nsaddr = htonl(entry->ipv4_hnapt.new_sip);
+ __be32 ndaddr = htonl(entry->ipv4_hnapt.new_dip);
+ unsigned char h_dest[ETH_ALEN];
+ unsigned char h_source[ETH_ALEN];
+
+ *((u32*) h_source) = swab32(entry->ipv4_hnapt.smac_hi);
+ *((u16*) &h_source[4]) = swab16(entry->ipv4_hnapt.smac_lo);
+ *((u32*) h_dest) = swab32(entry->ipv4_hnapt.dmac_hi);
+ *((u16*) &h_dest[4]) = swab16(entry->ipv4_hnapt.dmac_lo);
+ seq_printf(m,
+ "(%p)0x%05x|state=%s|type=%s|%pI4:%d->%pI4:%d=>%pI4:%d->%pI4:%d|%pM=>%pM|etype=0x%04x|info1=0x%x|info2=0x%x|vlan1=%d|vlan2=%d\n",
+ (void *)h->foe_table_dev + ((void *)(entry) - (void *)h->foe_table_cpu),
+ ei(entry, end), es(entry), pt(entry),
+ &saddr, entry->ipv4_hnapt.sport,
+ &daddr, entry->ipv4_hnapt.dport,
+ &nsaddr, entry->ipv4_hnapt.new_sport,
+ &ndaddr, entry->ipv4_hnapt.new_dport, h_source,
+ h_dest, ntohs(entry->ipv4_hnapt.etype),
+ entry->ipv4_hnapt.info_blk1,
+ entry->ipv4_hnapt.info_blk2,
+ entry->ipv4_hnapt.vlan1,
+ entry->ipv4_hnapt.vlan2);
+ } else
+ seq_printf(m, "0x%05x state=%s\n",
+ ei(entry, end), es(entry));
+ entry++;
+ }
+
+ return 0;
+}
+
+static int hnat_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, hnat_debug_show, file->private_data);
+}
+
+static const struct file_operations hnat_debug_fops = {
+ .open = hnat_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+#define QDMA_TX_SCH_TX 0x1a14
+
+static ssize_t hnat_sched_show(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ int id = (int) file->private_data;
+ struct hnat_priv *h = host;
+ u32 reg = readl(h->fe_base + QDMA_TX_SCH_TX);
+ int enable;
+ int max_rate;
+ char *buf;
+ unsigned int len = 0, buf_len = 1500;
+ ssize_t ret_cnt;
+
+ buf = kzalloc(buf_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+
+ if (id)
+ reg >>= 16;
+ reg &= 0xffff;
+ enable = !! (reg & BIT(11));
+ max_rate = ((reg >> 4) & 0x7f);
+ reg &= 0xf;
+ while (reg--)
+ max_rate *= 10;
+
+ len += scnprintf(buf + len, buf_len - len,
+ "EN\tMAX\n%d\t%d\n", enable, max_rate);
+
+ if (len > buf_len)
+ len = buf_len;
+
+ ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+ kfree(buf);
+ return ret_cnt;
+}
+
+static ssize_t hnat_sched_write(struct file *file,
+ const char __user *buf, size_t length, loff_t *offset)
+{
+ int id = (int) file->private_data;
+ struct hnat_priv *h = host;
+ char line[64];
+ int enable, rate, exp = 0, shift = 0;
+ size_t size;
+ u32 reg = readl(h->fe_base + QDMA_TX_SCH_TX);
+ u32 val = 0;
+
+ if (length > sizeof(line))
+ return -EINVAL;
+
+ if (copy_from_user(line, buf, length))
+ return -EFAULT;
+
+ sscanf(line, "%d %d", &enable, &rate);
+
+ while (rate > 127) {
+ rate /= 10;
+ exp++;
+ }
+
+ if (enable)
+ val |= BIT(11);
+ val |= (rate & 0x7f) << 4;
+ val |= exp & 0xf;
+ if (id)
+ shift = 16;
+ reg &= ~(0xffff << shift);
+ reg |= val << shift;
+ writel(reg, h->fe_base + QDMA_TX_SCH_TX);
+
+ size = strlen(line);
+ *offset += size;
+
+ return length;
+}
+
+static const struct file_operations hnat_sched_fops = {
+ .open = simple_open,
+ .read = hnat_sched_show,
+ .write = hnat_sched_write,
+ .llseek = default_llseek,
+};
+
+#define QTX_CFG(x) (0x1800 + (x * 0x10))
+#define QTX_SCH(x) (0x1804 + (x * 0x10))
+
+static ssize_t hnat_queue_show(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hnat_priv *h = host;
+ int id = (int) file->private_data;
+ u32 reg = readl(h->fe_base + QTX_SCH(id));
+ u32 cfg = readl(h->fe_base + QTX_CFG(id));
+ int scheduler = !!(reg & BIT(31));
+ int min_rate_en = !!(reg & BIT(27));
+ int min_rate = (reg >> 20) & 0x7f;
+ int min_rate_exp = (reg >> 16) & 0xf;
+ int max_rate_en = !!(reg & BIT(11));
+ int max_weight = (reg >> 12) & 0xf;
+ int max_rate = (reg >> 4) & 0x7f;
+ int max_rate_exp = reg & 0xf;
+ char *buf;
+ unsigned int len = 0, buf_len = 1500;
+ ssize_t ret_cnt;
+
+ buf = kzalloc(buf_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ while (min_rate_exp--)
+ min_rate *= 10;
+
+ while (max_rate_exp--)
+ max_rate *= 10;
+
+ len += scnprintf(buf + len, buf_len - len,
+ "scheduler: %d\nhw resv: %d\nsw resv: %d\n",
+ scheduler, (cfg >> 8) & 0xff, cfg & 0xff);
+ len += scnprintf(buf + len, buf_len - len,
+ "\tEN\tRATE\t\tWEIGHT\n");
+ len += scnprintf(buf + len, buf_len - len,
+ "max\t%d\t%8d\t%d\n", max_rate_en, max_rate, max_weight);
+ len += scnprintf(buf + len, buf_len - len,
+ "min\t%d\t%8d\t-\n", min_rate_en, min_rate);
+
+ if (len > buf_len)
+ len = buf_len;
+
+ ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+ kfree(buf);
+ return ret_cnt;
+}
+
+static ssize_t hnat_queue_write(struct file *file,
+ const char __user *buf, size_t length, loff_t *offset)
+{
+ int id = (int) file->private_data;
+ struct hnat_priv *h = host;
+ char line[64];
+ int max_enable, max_rate, max_exp = 0;
+ int min_enable, min_rate, min_exp = 0;
+ int weight;
+ int resv;
+ int scheduler;
+ size_t size;
+ u32 reg = readl(h->fe_base + QTX_SCH(id));
+
+ if (length > sizeof(line))
+ return -EINVAL;
+
+ if (copy_from_user(line, buf, length))
+ return -EFAULT;
+
+ sscanf(line, "%d %d %d %d %d %d %d", &scheduler, &min_enable, &min_rate, &max_enable, &max_rate, &weight, &resv);
+
+ while (max_rate > 127) {
+ max_rate /= 10;
+ max_exp++;
+ }
+
+ while (min_rate > 127) {
+ min_rate /= 10;
+ min_exp++;
+ }
+
+ reg &= 0x70000000;
+ if (scheduler)
+ reg |= BIT(31);
+ if (min_enable)
+ reg |= BIT(27);
+ reg |= (min_rate & 0x7f) << 20;
+ reg |= (min_exp & 0xf) << 16;
+ if (max_enable)
+ reg |= BIT(11);
+ reg |= (weight & 0xf) << 12;
+ reg |= (max_rate & 0x7f) << 4;
+ reg |= max_exp & 0xf;
+ writel(reg, h->fe_base + QTX_SCH(id));
+
+ resv &= 0xff;
+ reg = readl(h->fe_base + QTX_CFG(id));
+ reg &= 0xffff0000;
+ reg |= (resv << 8) | resv;
+ writel(reg, h->fe_base + QTX_CFG(id));
+
+ size = strlen(line);
+ *offset += size;
+
+ return length;
+}
+
+static const struct file_operations hnat_queue_fops = {
+ .open = simple_open,
+ .read = hnat_queue_show,
+ .write = hnat_queue_write,
+ .llseek = default_llseek,
+};
+
+static void hnat_ac_timer_handle(unsigned long priv)
+{
+ struct hnat_priv *h = (struct hnat_priv*) priv;
+ int i;
+
+ for (i = 0; i < HNAT_COUNTER_MAX; i++) {
+ u32 b_hi, b_lo;
+ u64 b;
+
+ b_lo = readl(h->fe_base + HNAT_AC_BYTE_LO(i));
+ b_hi = readl(h->fe_base + HNAT_AC_BYTE_HI(i));
+ b = b_hi;
+ b <<= 32;
+ b += b_lo;
+ h->acct[i].bytes += b;
+ h->acct[i].packets += readl(h->fe_base + HNAT_AC_PACKET(i));
+ }
+
+ mod_timer(&h->ac_timer, jiffies + HNAT_AC_TIMER_INTERVAL);
+}
+
+static ssize_t hnat_counter_show(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct hnat_priv *h = host;
+ int id = (int) file->private_data;
+ char *buf;
+ unsigned int len = 0, buf_len = 1500;
+ ssize_t ret_cnt;
+ int id2 = id + (HNAT_COUNTER_MAX / 2);
+
+ buf = kzalloc(buf_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ len += scnprintf(buf + len, buf_len - len,
+ "tx pkts : %llu\ntx bytes: %llu\nrx pktks : %llu\nrx bytes : %llu\n",
+ h->acct[id].packets, h->acct[id].bytes,
+ h->acct[id2].packets, h->acct[id2].bytes);
+
+ if (len > buf_len)
+ len = buf_len;
+
+ ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+
+ kfree(buf);
+ return ret_cnt;
+}
+
+static const struct file_operations hnat_counter_fops = {
+ .open = simple_open,
+ .read = hnat_counter_show,
+ .llseek = default_llseek,
+};
+
+#define dump_register(nm) \
+{ \
+ .name = __stringify(nm), \
+ .offset = PPE_ ##nm , \
+}
+
+static const struct debugfs_reg32 hnat_regs[] = {
+ dump_register(GLO_CFG),
+ dump_register(FLOW_CFG),
+ dump_register(IP_PROT_CHK),
+ dump_register(IP_PROT_0),
+ dump_register(IP_PROT_1),
+ dump_register(IP_PROT_2),
+ dump_register(IP_PROT_3),
+ dump_register(TB_CFG),
+ dump_register(TB_BASE),
+ dump_register(TB_USED),
+ dump_register(BNDR),
+ dump_register(BIND_LMT_0),
+ dump_register(BIND_LMT_1),
+ dump_register(KA),
+ dump_register(UNB_AGE),
+ dump_register(BND_AGE_0),
+ dump_register(BND_AGE_1),
+ dump_register(HASH_SEED),
+ dump_register(DFT_CPORT),
+ dump_register(MCAST_PPSE),
+ dump_register(MCAST_L_0),
+ dump_register(MCAST_H_0),
+ dump_register(MCAST_L_1),
+ dump_register(MCAST_H_1),
+ dump_register(MCAST_L_2),
+ dump_register(MCAST_H_2),
+ dump_register(MCAST_L_3),
+ dump_register(MCAST_H_3),
+ dump_register(MCAST_L_4),
+ dump_register(MCAST_H_4),
+ dump_register(MCAST_L_5),
+ dump_register(MCAST_H_5),
+ dump_register(MCAST_L_6),
+ dump_register(MCAST_H_6),
+ dump_register(MCAST_L_7),
+ dump_register(MCAST_H_7),
+ dump_register(MCAST_L_8),
+ dump_register(MCAST_H_8),
+ dump_register(MCAST_L_9),
+ dump_register(MCAST_H_9),
+ dump_register(MCAST_L_A),
+ dump_register(MCAST_H_A),
+ dump_register(MCAST_L_B),
+ dump_register(MCAST_H_B),
+ dump_register(MCAST_L_C),
+ dump_register(MCAST_H_C),
+ dump_register(MCAST_L_D),
+ dump_register(MCAST_H_D),
+ dump_register(MCAST_L_E),
+ dump_register(MCAST_H_E),
+ dump_register(MCAST_L_F),
+ dump_register(MCAST_H_F),
+ dump_register(MTU_DRP),
+ dump_register(MTU_VLYR_0),
+ dump_register(MTU_VLYR_1),
+ dump_register(MTU_VLYR_2),
+ dump_register(VPM_TPID),
+ dump_register(VPM_TPID),
+ dump_register(CAH_CTRL),
+ dump_register(CAH_TAG_SRH),
+ dump_register(CAH_LINE_RW),
+ dump_register(CAH_WDATA),
+ dump_register(CAH_RDATA),
+};
+
+int __init hnat_init_debugfs(struct hnat_priv *h)
+{
+ int ret = 0;
+ struct dentry *root;
+ struct dentry *file;
+ int i;
+ char name[16];
+
+ root = debugfs_create_dir("hnat", NULL);
+ if (!root) {
+ dev_err(h->dev, "%s:err at %d\n", __func__, __LINE__);
+ ret = -ENOMEM;
+ goto err0;
+ }
+ h->root = root;
+ h->regset = kzalloc(sizeof(*h->regset), GFP_KERNEL);
+ if (!h->regset) {
+ dev_err(h->dev, "%s:err at %d\n", __func__, __LINE__);
+ ret = -ENOMEM;
+ goto err1;
+ }
+ h->regset->regs = hnat_regs;
+ h->regset->nregs = ARRAY_SIZE(hnat_regs);
+ h->regset->base = h->ppe_base;
+
+ file = debugfs_create_regset32("regdump", S_IRUGO, root, h->regset);
+ if (!file) {
+ dev_err(h->dev, "%s:err at %d\n", __func__, __LINE__);
+ ret = -ENOMEM;
+ goto err1;
+ }
+ debugfs_create_file("all_entry", S_IRUGO, root, h, &hnat_debug_fops);
+ for (i = 0; i < HNAT_COUNTER_MAX / 2; i++) {
+ snprintf(name, sizeof(name), "counter%d", i);
+ debugfs_create_file(name, S_IRUGO, root, (void *)i, &hnat_counter_fops);
+ }
+
+ for (i = 0; i < 2; i++) {
+ snprintf(name, sizeof(name), "scheduler%d", i);
+ debugfs_create_file(name, S_IRUGO, root, (void *)i, &hnat_sched_fops);
+ }
+
+ for (i = 0; i < 16; i++) {
+ snprintf(name, sizeof(name), "queue%d", i);
+ debugfs_create_file(name, S_IRUGO, root, (void *)i, &hnat_queue_fops);
+ }
+
+ setup_timer(&h->ac_timer, hnat_ac_timer_handle, (unsigned long) h);
+ mod_timer(&h->ac_timer, jiffies + HNAT_AC_TIMER_INTERVAL);
+
+ return 0;
+
+ err1:
+ debugfs_remove_recursive(root);
+ err0:
+ return ret;
+}
+
+void hnat_deinit_debugfs(struct hnat_priv *h)
+{
+ del_timer(&h->ac_timer);
+ debugfs_remove_recursive(h->root);
+ h->root = NULL;
+}
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/hnat_nf_hook.c
@@ -0,0 +1,289 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
+ * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/netfilter_bridge.h>
+
+#include <net/arp.h>
+#include <net/neighbour.h>
+#include <net/netfilter/nf_conntrack_helper.h>
+
+#include "nf_hnat_mtk.h"
+#include "hnat.h"
+
+#include "../mtk_eth_soc.h"
+
+static unsigned int skb_to_hnat_info(struct sk_buff *skb,
+ const struct net_device *dev,
+ struct foe_entry *foe)
+{
+ struct foe_entry entry = { 0 };
+ int lan = IS_LAN(dev);
+ struct ethhdr *eth;
+ struct iphdr *iph;
+ struct tcphdr *tcph;
+ struct udphdr *udph;
+ int tcp = 0;
+ int ipv4 = 0;
+ u32 gmac;
+
+ eth = eth_hdr(skb);
+ switch (ntohs(eth->h_proto)) {
+ case ETH_P_IP:
+ ipv4 = 1;
+ break;
+
+ default:
+ return -1;
+ }
+
+ iph = ip_hdr(skb);
+ switch (iph->protocol) {
+ case IPPROTO_TCP:
+ tcph = tcp_hdr(skb);
+ tcp = 1;
+ break;
+
+ case IPPROTO_UDP:
+ udph = udp_hdr(skb);
+ break;
+
+ default:
+ return -1;
+ }
+
+ entry.ipv4_hnapt.etype = htons(ETH_P_IP);
+
+ if (lan) {
+ entry.ipv4_hnapt.etype = htons(ETH_P_8021Q);
+ entry.bfib1.vlan_layer = 1;
+ entry.ipv4_hnapt.vlan1 = BIT(dev->name[3] - '0');
+ }
+
+ if (dev->priv_flags & IFF_802_1Q_VLAN) {
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+ entry.ipv4_hnapt.etype = htons(ETH_P_8021Q);
+ entry.bfib1.vlan_layer = 1;
+ if (lan)
+ entry.ipv4_hnapt.vlan2 = vlan->vlan_id;
+ else
+ entry.ipv4_hnapt.vlan1 = vlan->vlan_id;
+ }
+
+ entry.ipv4_hnapt.dmac_hi = swab32(*((u32*) eth->h_dest));
+ entry.ipv4_hnapt.dmac_lo = swab16(*((u16*) &eth->h_dest[4]));
+ entry.ipv4_hnapt.smac_hi = swab32(*((u32*) eth->h_source));
+ entry.ipv4_hnapt.smac_lo = swab16(*((u16*) &eth->h_source[4]));
+ entry.ipv4_hnapt.pppoe_id = 0;
+ entry.bfib1.psn = 0;
+ entry.ipv4_hnapt.bfib1.vpm = 1;
+
+ if (ipv4)
+ entry.ipv4_hnapt.bfib1.pkt_type = IPV4_HNAPT;
+
+ entry.ipv4_hnapt.new_sip = ntohl(iph->saddr);
+ entry.ipv4_hnapt.new_dip = ntohl(iph->daddr);
+ entry.ipv4_hnapt.iblk2.dscp = iph->tos;
+#if defined(CONFIG_NET_MEDIATEK_HW_QOS)
+ entry.ipv4_hnapt.iblk2.qid = skb->mark & 0x7;
+ if (lan)
+ entry.ipv4_hnapt.iblk2.qid += 8;
+ entry.ipv4_hnapt.iblk2.fqos = 1;
+#endif
+ if (tcp) {
+ entry.ipv4_hnapt.new_sport = ntohs(tcph->source);
+ entry.ipv4_hnapt.new_dport = ntohs(tcph->dest);
+ entry.ipv4_hnapt.bfib1.udp = 0;
+ } else {
+ entry.ipv4_hnapt.new_sport = ntohs(udph->source);
+ entry.ipv4_hnapt.new_dport = ntohs(udph->dest);
+ entry.ipv4_hnapt.bfib1.udp = 1;
+ }
+
+ if (IS_LAN(dev))
+ gmac = NR_GMAC1_PORT;
+ else if (IS_WAN(dev))
+ gmac = NR_GMAC2_PORT;
+
+ if (is_multicast_ether_addr(&eth->h_dest[0]))
+ entry.ipv4_hnapt.iblk2.mcast = 1;
+ else
+ entry.ipv4_hnapt.iblk2.mcast = 0;
+
+ entry.ipv4_hnapt.iblk2.dp = gmac;
+ entry.ipv4_hnapt.iblk2.port_mg = 0x3f;
+ entry.ipv4_hnapt.iblk2.port_ag = (skb->mark >> 3) & 0x1f;
+ if (IS_LAN(dev))
+ entry.ipv4_hnapt.iblk2.port_ag += 32;
+ entry.bfib1.time_stamp = readl((host->fe_base + 0x0010)) & (0xFFFF);
+ entry.ipv4_hnapt.bfib1.ttl = 1;
+ entry.ipv4_hnapt.bfib1.cah = 1;
+ entry.ipv4_hnapt.bfib1.ka = 1;
+ entry.bfib1.state = BIND;
+
+ entry.ipv4_hnapt.sip = foe->ipv4_hnapt.sip;
+ entry.ipv4_hnapt.dip = foe->ipv4_hnapt.dip;
+ entry.ipv4_hnapt.sport = foe->ipv4_hnapt.sport;
+ entry.ipv4_hnapt.dport = foe->ipv4_hnapt.dport;
+
+ memcpy(foe, &entry, sizeof(entry));
+
+ return 0;
+}
+
+static unsigned int mtk_hnat_nf_post_routing(struct sk_buff *skb,
+ const struct net_device *out,
+ unsigned int (*fn)(struct sk_buff *, const struct net_device *),
+ const char *func)
+{
+ struct foe_entry *entry;
+ struct nf_conn *ct;
+ enum ip_conntrack_info ctinfo;
+ const struct nf_conn_help *help;
+
+ if ((skb->mark & 0x7) < 4)
+ return 0;
+
+ ct = nf_ct_get(skb, &ctinfo);
+ if (!ct)
+ return 0;
+
+ /* rcu_read_lock()ed by nf_hook_slow */
+ help = nfct_help(ct);
+ if (help && rcu_dereference(help->helper))
+ return 0;
+
+ if ((FROM_GE_WAN(skb) || FROM_GE_LAN(skb)) &&
+ skb_hnat_is_hashed(skb) &&
+ (skb_hnat_reason(skb) == HIT_BIND_KEEPALIVE_DUP_OLD_HDR))
+ return -1;
+
+ if ((IS_LAN(out) && FROM_GE_WAN(skb)) ||
+ (IS_WAN(out) && FROM_GE_LAN(skb))) {
+ if (!skb_hnat_is_hashed(skb))
+ return 0;
+
+ entry = &host->foe_table_cpu[skb_hnat_entry(skb)];
+ if (entry_hnat_is_bound(entry))
+ return 0;
+
+ if (skb_hnat_reason(skb) == HIT_UNBIND_RATE_REACH &&
+ skb_hnat_alg(skb) == 0) {
+ if (fn && fn(skb, out))
+ return 0;
+ skb_to_hnat_info(skb, out, entry);
+ }
+ }
+
+ return 0;
+}
+
+static unsigned int mtk_hnat_nf_pre_routing(void *priv,
+ struct sk_buff *skb,
+ const struct nf_hook_state *state)
+{
+ if (IS_WAN(state->in))
+ HNAT_SKB_CB(skb)->iif = FOE_MAGIC_GE_WAN;
+ else if (IS_LAN(state->in))
+ HNAT_SKB_CB(skb)->iif = FOE_MAGIC_GE_LAN;
+ else if (!IS_BR(state->in))
+ HNAT_SKB_CB(skb)->iif = FOE_INVALID;
+
+ return NF_ACCEPT;
+}
+
+static unsigned int hnat_get_nexthop(struct sk_buff *skb, const struct net_device *out) {
+
+ u32 nexthop;
+ struct neighbour *neigh;
+ struct dst_entry *dst = skb_dst(skb);
+ struct rtable *rt = (struct rtable *)dst;
+ struct net_device *dev = (__force struct net_device *)out;
+
+ rcu_read_lock_bh();
+ nexthop = (__force u32) rt_nexthop(rt, ip_hdr(skb)->daddr);
+ neigh = __ipv4_neigh_lookup_noref(dev, nexthop);
+ if (unlikely(!neigh)) {
+ dev_err(host->dev, "%s:++ no neigh\n", __func__);
+ return -1;
+ }
+
+ /* why do we get all zero ethernet address ? */
+ if (!is_valid_ether_addr(neigh->ha)){
+ rcu_read_unlock_bh();
+ return -1;
+ }
+
+ memcpy(eth_hdr(skb)->h_dest, neigh->ha, ETH_ALEN);
+ memcpy(eth_hdr(skb)->h_source, out->dev_addr, ETH_ALEN);
+
+ rcu_read_unlock_bh();
+
+ return 0;
+}
+
+static unsigned int mtk_hnat_ipv4_nf_post_routing(void *priv,
+ struct sk_buff *skb,
+ const struct nf_hook_state *state)
+{
+ if (!mtk_hnat_nf_post_routing(skb, state->out, hnat_get_nexthop, __func__))
+ return NF_ACCEPT;
+
+ return NF_DROP;
+}
+
+static unsigned int mtk_hnat_br_nf_post_routing(void *priv,
+ struct sk_buff *skb,
+ const struct nf_hook_state *state)
+{
+ if (!mtk_hnat_nf_post_routing(skb, state->out , 0, __func__))
+ return NF_ACCEPT;
+
+ return NF_DROP;
+}
+
+static struct nf_hook_ops mtk_hnat_nf_ops[] __read_mostly = {
+ {
+ .hook = mtk_hnat_nf_pre_routing,
+ .pf = NFPROTO_IPV4,
+ .hooknum = NF_INET_PRE_ROUTING,
+ .priority = NF_IP_PRI_FIRST,
+ }, {
+ .hook = mtk_hnat_ipv4_nf_post_routing,
+ .pf = NFPROTO_IPV4,
+ .hooknum = NF_INET_POST_ROUTING,
+ .priority = NF_IP_PRI_LAST,
+ }, {
+ .hook = mtk_hnat_nf_pre_routing,
+ .pf = NFPROTO_BRIDGE,
+ .hooknum = NF_BR_PRE_ROUTING,
+ .priority = NF_BR_PRI_FIRST,
+ }, {
+ .hook = mtk_hnat_br_nf_post_routing,
+ .pf = NFPROTO_BRIDGE,
+ .hooknum = NF_BR_POST_ROUTING,
+ .priority = NF_BR_PRI_LAST - 1,
+ },
+};
+
+int hnat_register_nf_hooks(void)
+{
+ return nf_register_hooks(mtk_hnat_nf_ops,
+ ARRAY_SIZE(mtk_hnat_nf_ops));
+}
+
+void hnat_unregister_nf_hooks(void)
+{
+ nf_unregister_hooks(mtk_hnat_nf_ops,
+ ARRAY_SIZE(mtk_hnat_nf_ops));
+}
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_hnat/nf_hnat_mtk.h
@@ -0,0 +1,44 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Copyright (C) 2014-2016 Sean Wang <sean.wang@mediatek.com>
+ * Copyright (C) 2016-2017 John Crispin <blogic@openwrt.org>
+ */
+
+#ifndef NF_HNAT_MTK_H
+#define NF_HNAT_MTK_H
+
+#include <asm/dma-mapping.h>
+#include <linux/netdevice.h>
+
+#define HNAT_SKB_CB2(__skb) ((struct hnat_skb_cb2 *)&((__skb)->cb[44]))
+struct hnat_skb_cb2 {
+ __u32 magic;
+};
+
+struct hnat_desc {
+ u32 entry:14;
+ u32 crsn:5;
+ u32 sport:4;
+ u32 alg:9;
+} __attribute__ ((packed));
+
+#define skb_hnat_magic(skb) (((struct hnat_desc *)(skb->head))->magic)
+#define skb_hnat_reason(skb) (((struct hnat_desc *)(skb->head))->crsn)
+#define skb_hnat_entry(skb) (((struct hnat_desc *)(skb->head))->entry)
+#define skb_hnat_sport(skb) (((struct hnat_desc *)(skb->head))->sport)
+#define skb_hnat_alg(skb) (((struct hnat_desc *)(skb->head))->alg)
+
+u32 hnat_tx(struct sk_buff *skb);
+u32 hnat_set_skb_info(struct sk_buff *skb, u32 *rxd);
+u32 hnat_reg(struct net_device *, void __iomem *);
+u32 hnat_unreg(void);
+
+#endif
+
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