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120 lines
3.7 KiB
Diff
120 lines
3.7 KiB
Diff
From 043efc0e619e04661be2b1889382db2fdd378145 Mon Sep 17 00:00:00 2001
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From: John Crispin <john@phrozen.org>
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Date: Thu, 10 Aug 2017 16:34:36 +0200
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Subject: [PATCH 56/57] net: mediatek: add hw nat support
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Signed-off-by: John Crispin <john@phrozen.org>
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---
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drivers/net/ethernet/mediatek/Kconfig | 7 +++++++
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drivers/net/ethernet/mediatek/Makefile | 1 +
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 13 +++++++++++++
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net/netfilter/nf_conntrack_proto_tcp.c | 19 +++++++++++++++++++
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4 files changed, 40 insertions(+)
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--- a/drivers/net/ethernet/mediatek/Kconfig
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+++ b/drivers/net/ethernet/mediatek/Kconfig
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@@ -14,4 +14,11 @@ config NET_MEDIATEK_SOC
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This driver supports the gigabit ethernet MACs in the
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MediaTek MT2701/MT7623 chipset family.
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+config NET_MEDIATEK_HNAT
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+ tristate "MediaTek MT7623 hardware NAT support"
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+ depends on NET_MEDIATEK_SOC && NF_CONNTRACK && NF_CONNTRACK_IPV4 && IP_NF_NAT && IP_NF_TARGET_MASQUERADE
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+ ---help---
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+ This driver supports the hardwaer NAT in the
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+ MediaTek MT2701/MT7623 chipset family.
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+
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endif #NET_VENDOR_MEDIATEK
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--- a/drivers/net/ethernet/mediatek/Makefile
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+++ b/drivers/net/ethernet/mediatek/Makefile
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@@ -3,3 +3,4 @@
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#
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obj-$(CONFIG_NET_MEDIATEK_SOC) += mtk_eth_soc.o
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+obj-$(CONFIG_NET_MEDIATEK_HNAT) += mtk_hnat/
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -23,6 +23,10 @@
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#include <linux/reset.h>
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#include <linux/tcp.h>
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+#if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE)
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+#include "mtk_hnat/nf_hnat_mtk.h"
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+#endif
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+
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#include "mtk_eth_soc.h"
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static int mtk_msg_level = -1;
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@@ -649,6 +653,11 @@ static int mtk_tx_map(struct sk_buff *sk
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return -ENOMEM;
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/* set the forward port */
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+#if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE)
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+ if (HNAT_SKB_CB2(skb)->magic == 0x78681415)
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+ fport |= 0x4 << TX_DMA_FPORT_SHIFT;
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+ else
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+#endif
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fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT;
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txd4 |= fport;
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@@ -1013,6 +1022,10 @@ static int mtk_poll_rx(struct napi_struc
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RX_DMA_VID(trxd.rxd3))
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__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
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RX_DMA_VID(trxd.rxd3));
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+#if defined(CONFIG_NET_MEDIATEK_HNAT) || defined(CONFIG_NET_MEDIATEK_HNAT_MODULE)
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+ *(u32 *)(skb->head) = trxd.rxd4;
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+ skb_hnat_alg(skb) = 0;
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+#endif
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skb_record_rx_queue(skb, 0);
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napi_gro_receive(napi, skb);
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--- a/net/netfilter/nf_conntrack_proto_tcp.c
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+++ b/net/netfilter/nf_conntrack_proto_tcp.c
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@@ -11,6 +11,7 @@
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#include <linux/types.h>
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#include <linux/timer.h>
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#include <linux/module.h>
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+#include <linux/inetdevice.h>
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#include <linux/in.h>
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#include <linux/tcp.h>
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#include <linux/spinlock.h>
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@@ -19,6 +20,7 @@
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#include <net/ip6_checksum.h>
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#include <asm/unaligned.h>
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+#include <net/ip.h>
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#include <net/tcp.h>
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#include <linux/netfilter.h>
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@@ -53,6 +55,11 @@ static int nf_ct_tcp_max_retrans __read_
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/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
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closely. They're more complex. --RR */
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+#ifndef IPV4_DEVCONF_DFLT
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+ #define IPV4_DEVCONF_DFLT(net, attr) \
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+ IPV4_DEVCONF((*net->ipv4.devconf_dflt), attr)
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+#endif
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+
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static const char *const tcp_conntrack_names[] = {
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"NONE",
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"SYN_SENT",
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@@ -519,6 +526,18 @@ static bool tcp_in_window(const struct n
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if (nf_ct_tcp_no_window_check)
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return true;
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+ if (net) {
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+ if ((net->ipv4.devconf_all && net->ipv4.devconf_dflt && net->ipv6.devconf_all) &&
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+ net->ipv6.devconf_dflt) {
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+ if ((IPV4_DEVCONF_DFLT(net, FORWARDING) ||
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+ IPV4_DEVCONF_ALL(net, FORWARDING)) ||
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+ (net->ipv6.devconf_all->forwarding ||
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+ net->ipv6.devconf_dflt->forwarding)) {
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+ return true;
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+ }
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+ }
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+ }
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+
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/*
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* Get the required data from the packet.
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*/
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