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git01.mediatek.com / openwrt / feeds / mtk-openwrt-feeds / e8b7dfa31906ce7c8cd56c07084d2800bb60cd27 / . / target / linux / mediatek / files-5.4 / drivers / net / ethernet / mediatek / mtk_hnat / hnat_nf_hook.c
blob: e0d5e10700db0f776c92f219b5c501e184e6d86a [file] [log] [blame]
/* 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 <linux/netfilter_ipv6.h>
#include <net/arp.h>
#include <net/neighbour.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_flow_table.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <net/udp.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_acct.h>
#include "nf_hnat_mtk.h"
#include "hnat.h"
#include "../mtk_eth_soc.h"
#include "../mtk_eth_reset.h"
#define do_ge2ext_fast(dev, skb) \
((IS_LAN_GRP(dev) || IS_WAN(dev) || IS_PPD(dev)) && \
skb_hnat_is_hashed(skb) && \
skb_hnat_reason(skb) == HIT_BIND_FORCE_TO_CPU)
#define do_ext2ge_fast_learn(dev, skb) \
(IS_PPD(dev) && \
(skb_hnat_sport(skb) == NR_PDMA_PORT || \
skb_hnat_sport(skb) == NR_QDMA_PORT) && \
((get_dev_from_index(skb->vlan_tci & VLAN_VID_MASK)) || \
get_wandev_from_index(skb->vlan_tci & VLAN_VID_MASK)))
#define do_mape_w2l_fast(dev, skb) \
(mape_toggle && IS_WAN(dev) && (!is_from_mape(skb)))
static struct ipv6hdr mape_l2w_v6h;
static struct ipv6hdr mape_w2l_v6h;
static inline uint8_t get_wifi_hook_if_index_from_dev(const struct net_device *dev)
{
int i;
for (i = 1; i < MAX_IF_NUM; i++) {
if (hnat_priv->wifi_hook_if[i] == dev)
return i;
}
return 0;
}
static inline int get_ext_device_number(void)
{
int i, number = 0;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++)
number += 1;
return number;
}
static inline int find_extif_from_devname(const char *name)
{
int i;
struct extdev_entry *ext_entry;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) {
ext_entry = hnat_priv->ext_if[i];
if (!strcmp(name, ext_entry->name))
return 1;
}
return 0;
}
static inline int get_index_from_dev(const struct net_device *dev)
{
int i;
struct extdev_entry *ext_entry;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) {
ext_entry = hnat_priv->ext_if[i];
if (dev == ext_entry->dev)
return ext_entry->dev->ifindex;
}
return 0;
}
static inline struct net_device *get_dev_from_index(int index)
{
int i;
struct extdev_entry *ext_entry;
struct net_device *dev = 0;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) {
ext_entry = hnat_priv->ext_if[i];
if (ext_entry->dev && index == ext_entry->dev->ifindex) {
dev = ext_entry->dev;
break;
}
}
return dev;
}
static inline struct net_device *get_wandev_from_index(int index)
{
if (!hnat_priv->g_wandev)
hnat_priv->g_wandev = dev_get_by_name(&init_net, hnat_priv->wan);
if (hnat_priv->g_wandev && hnat_priv->g_wandev->ifindex == index)
return hnat_priv->g_wandev;
return NULL;
}
static inline int extif_set_dev(struct net_device *dev)
{
int i;
struct extdev_entry *ext_entry;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) {
ext_entry = hnat_priv->ext_if[i];
if (!strcmp(dev->name, ext_entry->name) && !ext_entry->dev) {
dev_hold(dev);
ext_entry->dev = dev;
pr_info("%s(%s)\n", __func__, dev->name);
return ext_entry->dev->ifindex;
}
}
return -1;
}
static inline int extif_put_dev(struct net_device *dev)
{
int i;
struct extdev_entry *ext_entry;
for (i = 0; i < MAX_EXT_DEVS && hnat_priv->ext_if[i]; i++) {
ext_entry = hnat_priv->ext_if[i];
if (ext_entry->dev == dev) {
ext_entry->dev = NULL;
dev_put(dev);
pr_info("%s(%s)\n", __func__, dev->name);
return 0;
}
}
return -1;
}
int ext_if_add(struct extdev_entry *ext_entry)
{
int len = get_ext_device_number();
if (len < MAX_EXT_DEVS)
hnat_priv->ext_if[len++] = ext_entry;
return len;
}
int ext_if_del(struct extdev_entry *ext_entry)
{
int i, j;
for (i = 0; i < MAX_EXT_DEVS; i++) {
if (hnat_priv->ext_if[i] == ext_entry) {
for (j = i; hnat_priv->ext_if[j] && j < MAX_EXT_DEVS - 1; j++)
hnat_priv->ext_if[j] = hnat_priv->ext_if[j + 1];
hnat_priv->ext_if[j] = NULL;
break;
}
}
return i;
}
void foe_clear_all_bind_entries(struct net_device *dev)
{
int i, hash_index;
struct foe_entry *entry;
if (!IS_LAN_GRP(dev) && !IS_WAN(dev) &&
!find_extif_from_devname(dev->name) &&
!dev->netdev_ops->ndo_flow_offload_check)
return;
for (i = 0; i < CFG_PPE_NUM; i++) {
cr_set_field(hnat_priv->ppe_base[i] + PPE_TB_CFG,
SMA, SMA_ONLY_FWD_CPU);
for (hash_index = 0; hash_index < hnat_priv->foe_etry_num; hash_index++) {
entry = hnat_priv->foe_table_cpu[i] + hash_index;
if (entry->bfib1.state == BIND) {
entry->ipv4_hnapt.udib1.state = INVALID;
entry->ipv4_hnapt.udib1.time_stamp =
readl((hnat_priv->fe_base + 0x0010)) & 0xFF;
}
}
}
/* clear HWNAT cache */
hnat_cache_ebl(1);
mod_timer(&hnat_priv->hnat_sma_build_entry_timer, jiffies + 3 * HZ);
}
static void gmac_ppe_fwd_enable(struct net_device *dev)
{
if (IS_LAN(dev) || IS_GMAC1_MODE)
set_gmac_ppe_fwd(NR_GMAC1_PORT, 1);
else if (IS_WAN(dev))
set_gmac_ppe_fwd(NR_GMAC2_PORT, 1);
else if (IS_LAN2(dev))
set_gmac_ppe_fwd(NR_GMAC3_PORT, 1);
}
int nf_hnat_netdevice_event(struct notifier_block *unused, unsigned long event,
void *ptr)
{
struct net_device *dev;
dev = netdev_notifier_info_to_dev(ptr);
switch (event) {
case NETDEV_UP:
gmac_ppe_fwd_enable(dev);
extif_set_dev(dev);
break;
case NETDEV_GOING_DOWN:
if (!get_wifi_hook_if_index_from_dev(dev))
extif_put_dev(dev);
foe_clear_all_bind_entries(dev);
break;
case NETDEV_UNREGISTER:
if (hnat_priv->g_ppdev == dev) {
hnat_priv->g_ppdev = NULL;
dev_put(dev);
}
if (hnat_priv->g_wandev == dev) {
hnat_priv->g_wandev = NULL;
dev_put(dev);
}
break;
case NETDEV_REGISTER:
if (IS_PPD(dev) && !hnat_priv->g_ppdev)
hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd);
if (IS_WAN(dev) && !hnat_priv->g_wandev)
hnat_priv->g_wandev = dev_get_by_name(&init_net, hnat_priv->wan);
break;
case MTK_FE_RESET_NAT_DONE:
pr_info("[%s] HNAT driver starts to do warm init !\n", __func__);
hnat_warm_init();
break;
default:
break;
}
return NOTIFY_DONE;
}
void foe_clear_entry(struct neighbour *neigh)
{
u32 *daddr = (u32 *)neigh->primary_key;
unsigned char h_dest[ETH_ALEN];
struct foe_entry *entry;
int i, hash_index;
u32 dip;
dip = (u32)(*daddr);
for (i = 0; i < CFG_PPE_NUM; i++) {
if (!hnat_priv->foe_table_cpu[i])
continue;
for (hash_index = 0; hash_index < hnat_priv->foe_etry_num; hash_index++) {
entry = hnat_priv->foe_table_cpu[i] + hash_index;
if (entry->bfib1.state == BIND &&
entry->ipv4_hnapt.new_dip == ntohl(dip)) {
*((u32 *)h_dest) = swab32(entry->ipv4_hnapt.dmac_hi);
*((u16 *)&h_dest[4]) =
swab16(entry->ipv4_hnapt.dmac_lo);
if (strncmp(h_dest, neigh->ha, ETH_ALEN) != 0) {
pr_info("%s: state=%d\n", __func__,
neigh->nud_state);
cr_set_field(hnat_priv->ppe_base[i] + PPE_TB_CFG,
SMA, SMA_ONLY_FWD_CPU);
entry->ipv4_hnapt.udib1.state = INVALID;
entry->ipv4_hnapt.udib1.time_stamp =
readl((hnat_priv->fe_base + 0x0010)) & 0xFF;
/* clear HWNAT cache */
hnat_cache_ebl(1);
mod_timer(&hnat_priv->hnat_sma_build_entry_timer,
jiffies + 3 * HZ);
pr_info("Delete old entry: dip =%pI4\n", &dip);
pr_info("Old mac= %pM\n", h_dest);
pr_info("New mac= %pM\n", neigh->ha);
}
}
}
}
}
int nf_hnat_netevent_handler(struct notifier_block *unused, unsigned long event,
void *ptr)
{
struct net_device *dev = NULL;
struct neighbour *neigh = NULL;
switch (event) {
case NETEVENT_NEIGH_UPDATE:
neigh = ptr;
dev = neigh->dev;
if (dev)
foe_clear_entry(neigh);
break;
}
return NOTIFY_DONE;
}
unsigned int mape_add_ipv6_hdr(struct sk_buff *skb, struct ipv6hdr mape_ip6h)
{
struct ethhdr *eth = NULL;
struct ipv6hdr *ip6h = NULL;
struct iphdr *iph = NULL;
if (skb_headroom(skb) < IPV6_HDR_LEN || skb_shared(skb) ||
(skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
return -1;
}
/* point to L3 */
memcpy(skb->data - IPV6_HDR_LEN - ETH_HLEN, skb_push(skb, ETH_HLEN), ETH_HLEN);
memcpy(skb_push(skb, IPV6_HDR_LEN - ETH_HLEN), &mape_ip6h, IPV6_HDR_LEN);
eth = (struct ethhdr *)(skb->data - ETH_HLEN);
eth->h_proto = htons(ETH_P_IPV6);
skb->protocol = htons(ETH_P_IPV6);
iph = (struct iphdr *)(skb->data + IPV6_HDR_LEN);
ip6h = (struct ipv6hdr *)(skb->data);
ip6h->payload_len = iph->tot_len; /* maybe different with ipv4 */
skb_set_network_header(skb, 0);
skb_set_transport_header(skb, iph->ihl * 4 + IPV6_HDR_LEN);
return 0;
}
static void fix_skb_packet_type(struct sk_buff *skb, struct net_device *dev,
struct ethhdr *eth)
{
skb->pkt_type = PACKET_HOST;
if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_MULTICAST;
}
}
unsigned int do_hnat_ext_to_ge(struct sk_buff *skb, const struct net_device *in,
const char *func)
{
if (hnat_priv->g_ppdev && hnat_priv->g_ppdev->flags & IFF_UP) {
u16 vlan_id = 0;
skb_set_network_header(skb, 0);
skb_push(skb, ETH_HLEN);
set_to_ppe(skb);
vlan_id = skb_vlan_tag_get_id(skb);
if (vlan_id) {
skb = vlan_insert_tag(skb, skb->vlan_proto, skb->vlan_tci);
if (!skb)
return -1;
}
/*set where we come from*/
skb->vlan_proto = htons(ETH_P_8021Q);
skb->vlan_tci =
(VLAN_CFI_MASK | (in->ifindex & VLAN_VID_MASK));
trace_printk(
"%s: vlan_prot=0x%x, vlan_tci=%x, in->name=%s, skb->dev->name=%s\n",
__func__, ntohs(skb->vlan_proto), skb->vlan_tci,
in->name, hnat_priv->g_ppdev->name);
skb->dev = hnat_priv->g_ppdev;
dev_queue_xmit(skb);
trace_printk("%s: called from %s successfully\n", __func__, func);
return 0;
}
trace_printk("%s: called from %s fail\n", __func__, func);
return -1;
}
unsigned int do_hnat_ext_to_ge2(struct sk_buff *skb, const char *func)
{
struct ethhdr *eth = eth_hdr(skb);
struct net_device *dev;
struct foe_entry *entry;
trace_printk("%s: vlan_prot=0x%x, vlan_tci=%x\n", __func__,
ntohs(skb->vlan_proto), skb->vlan_tci);
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return -1;
dev = get_dev_from_index(skb->vlan_tci & VLAN_VID_MASK);
if (dev) {
/*set where we to go*/
skb->dev = dev;
skb->vlan_proto = 0;
skb->vlan_tci = 0;
if (ntohs(eth->h_proto) == ETH_P_8021Q) {
skb = skb_vlan_untag(skb);
if (unlikely(!skb))
return -1;
}
if (IS_BOND_MODE &&
(((hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) &&
(skb_hnat_entry(skb) != 0x7fff)) ||
((hnat_priv->data->version != MTK_HNAT_V2 &&
hnat_priv->data->version != MTK_HNAT_V3) &&
(skb_hnat_entry(skb) != 0x3fff))))
skb_set_hash(skb, skb_hnat_entry(skb) >> 1, PKT_HASH_TYPE_L4);
set_from_extge(skb);
fix_skb_packet_type(skb, skb->dev, eth);
netif_rx(skb);
trace_printk("%s: called from %s successfully\n", __func__,
func);
return 0;
} else {
/* MapE WAN --> LAN/WLAN PingPong. */
dev = get_wandev_from_index(skb->vlan_tci & VLAN_VID_MASK);
if (mape_toggle && dev) {
if (!mape_add_ipv6_hdr(skb, mape_w2l_v6h)) {
skb_set_mac_header(skb, -ETH_HLEN);
skb->dev = dev;
set_from_mape(skb);
skb->vlan_proto = 0;
skb->vlan_tci = 0;
fix_skb_packet_type(skb, skb->dev, eth_hdr(skb));
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
entry->bfib1.pkt_type = IPV4_HNAPT;
netif_rx(skb);
return 0;
}
}
trace_printk("%s: called from %s fail\n", __func__, func);
return -1;
}
}
unsigned int do_hnat_ge_to_ext(struct sk_buff *skb, const char *func)
{
/*set where we to go*/
u8 index;
struct foe_entry *entry;
struct net_device *dev;
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return -1;
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
if (IS_IPV4_GRP(entry))
index = entry->ipv4_hnapt.act_dp;
else
index = entry->ipv6_5t_route.act_dp;
dev = get_dev_from_index(index);
if (!dev) {
trace_printk("%s: called from %s. Get wifi interface fail\n",
__func__, func);
return 0;
}
skb->dev = dev;
if (IS_HQOS_MODE && eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) {
skb = skb_unshare(skb, GFP_ATOMIC);
if (!skb)
return NF_ACCEPT;
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
return NF_ACCEPT;
skb_pull_rcsum(skb, VLAN_HLEN);
memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - VLAN_HLEN,
2 * ETH_ALEN);
}
if (skb->dev) {
skb_set_network_header(skb, 0);
skb_push(skb, ETH_HLEN);
dev_queue_xmit(skb);
trace_printk("%s: called from %s successfully\n", __func__,
func);
return 0;
} else {
if (mape_toggle) {
/* Add ipv6 header mape for lan/wlan -->wan */
dev = get_wandev_from_index(index);
if (dev) {
if (!mape_add_ipv6_hdr(skb, mape_l2w_v6h)) {
skb_set_network_header(skb, 0);
skb_push(skb, ETH_HLEN);
skb_set_mac_header(skb, 0);
skb->dev = dev;
dev_queue_xmit(skb);
return 0;
}
trace_printk("%s: called from %s fail[MapE]\n", __func__,
func);
return -1;
}
}
}
/*if external devices is down, invalidate related ppe entry*/
if (entry_hnat_is_bound(entry)) {
entry->bfib1.state = INVALID;
if (IS_IPV4_GRP(entry))
entry->ipv4_hnapt.act_dp = 0;
else
entry->ipv6_5t_route.act_dp = 0;
/* clear HWNAT cache */
hnat_cache_ebl(1);
}
trace_printk("%s: called from %s fail, index=%x\n", __func__,
func, index);
return -1;
}
static void pre_routing_print(struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, const char *func)
{
trace_printk(
"[%s]: %s(iif=0x%x CB2=0x%x)-->%s (ppe_hash=0x%x) sport=0x%x reason=0x%x alg=0x%x from %s\n",
__func__, in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, out->name, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb), skb_hnat_alg(skb),
func);
}
static void post_routing_print(struct sk_buff *skb, const struct net_device *in,
const struct net_device *out, const char *func)
{
trace_printk(
"[%s]: %s(iif=0x%x, CB2=0x%x)-->%s (ppe_hash=0x%x) sport=0x%x reason=0x%x alg=0x%x from %s\n",
__func__, in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, out->name, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb), skb_hnat_alg(skb),
func);
}
static inline void hnat_set_iif(const struct nf_hook_state *state,
struct sk_buff *skb, int val)
{
if (IS_WHNAT(state->in) && FROM_WED(skb)) {
return;
} else if (IS_LAN(state->in)) {
skb_hnat_iface(skb) = FOE_MAGIC_GE_LAN;
} else if (IS_LAN2(state->in)) {
skb_hnat_iface(skb) = FOE_MAGIC_GE_LAN2;
} else if (IS_PPD(state->in)) {
skb_hnat_iface(skb) = FOE_MAGIC_GE_PPD;
} else if (IS_EXT(state->in)) {
skb_hnat_iface(skb) = FOE_MAGIC_EXT;
} else if (IS_WAN(state->in)) {
skb_hnat_iface(skb) = FOE_MAGIC_GE_WAN;
} else if (!IS_BR(state->in)) {
if (state->in->netdev_ops->ndo_flow_offload_check) {
skb_hnat_iface(skb) = FOE_MAGIC_GE_VIRTUAL;
} else {
skb_hnat_iface(skb) = FOE_INVALID;
if (is_magic_tag_valid(skb) &&
IS_SPACE_AVAILABLE_HEAD(skb))
memset(skb_hnat_info(skb), 0, FOE_INFO_LEN);
}
}
}
static inline void hnat_set_alg(const struct nf_hook_state *state,
struct sk_buff *skb, int val)
{
skb_hnat_alg(skb) = val;
}
static inline void hnat_set_head_frags(const struct nf_hook_state *state,
struct sk_buff *head_skb, int val,
void (*fn)(const struct nf_hook_state *state,
struct sk_buff *skb, int val))
{
struct sk_buff *segs = skb_shinfo(head_skb)->frag_list;
fn(state, head_skb, val);
while (segs) {
fn(state, segs, val);
segs = segs->next;
}
}
static void ppe_fill_flow_lbl(struct foe_entry *entry, struct ipv6hdr *ip6h)
{
entry->ipv4_dslite.flow_lbl[0] = ip6h->flow_lbl[2];
entry->ipv4_dslite.flow_lbl[1] = ip6h->flow_lbl[1];
entry->ipv4_dslite.flow_lbl[2] = ip6h->flow_lbl[0];
}
unsigned int do_hnat_mape_w2l_fast(struct sk_buff *skb, const struct net_device *in,
const char *func)
{
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct iphdr _iphdr;
struct iphdr *iph;
struct ethhdr *eth;
/* WAN -> LAN/WLAN MapE. */
if (mape_toggle && (ip6h->nexthdr == NEXTHDR_IPIP)) {
iph = skb_header_pointer(skb, IPV6_HDR_LEN, sizeof(_iphdr), &_iphdr);
if (unlikely(!iph))
return -1;
switch (iph->protocol) {
case IPPROTO_UDP:
case IPPROTO_TCP:
break;
default:
return -1;
}
mape_w2l_v6h = *ip6h;
/* Remove ipv6 header. */
memcpy(skb->data + IPV6_HDR_LEN - ETH_HLEN,
skb->data - ETH_HLEN, ETH_HLEN);
skb_pull(skb, IPV6_HDR_LEN - ETH_HLEN);
skb_set_mac_header(skb, 0);
skb_set_network_header(skb, ETH_HLEN);
skb_set_transport_header(skb, ETH_HLEN + sizeof(_iphdr));
eth = eth_hdr(skb);
eth->h_proto = htons(ETH_P_IP);
set_to_ppe(skb);
skb->vlan_proto = htons(ETH_P_8021Q);
skb->vlan_tci =
(VLAN_CFI_MASK | (in->ifindex & VLAN_VID_MASK));
if (!hnat_priv->g_ppdev)
hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd);
skb->dev = hnat_priv->g_ppdev;
skb->protocol = htons(ETH_P_IP);
dev_queue_xmit(skb);
return 0;
}
return -1;
}
void mtk_464xlat_pre_process(struct sk_buff *skb)
{
struct foe_entry *foe;
foe = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
if (foe->bfib1.state != BIND &&
skb_hnat_reason(skb) == HIT_UNBIND_RATE_REACH)
memcpy(&headroom[skb_hnat_entry(skb)], skb->head,
sizeof(struct hnat_desc));
if (foe->bfib1.state == BIND)
memset(&headroom[skb_hnat_entry(skb)], 0,
sizeof(struct hnat_desc));
}
static unsigned int is_ppe_support_type(struct sk_buff *skb)
{
struct ethhdr *eth = NULL;
struct iphdr *iph = NULL;
struct ipv6hdr *ip6h = NULL;
struct iphdr _iphdr;
eth = eth_hdr(skb);
if (!is_magic_tag_valid(skb) || !IS_SPACE_AVAILABLE_HEAD(skb) ||
is_broadcast_ether_addr(eth->h_dest))
return 0;
switch (ntohs(skb->protocol)) {
case ETH_P_IP:
iph = ip_hdr(skb);
/* do not accelerate non tcp/udp traffic */
if ((iph->protocol == IPPROTO_TCP) ||
(iph->protocol == IPPROTO_UDP) ||
(iph->protocol == IPPROTO_IPV6)) {
return 1;
}
break;
case ETH_P_IPV6:
ip6h = ipv6_hdr(skb);
if ((ip6h->nexthdr == NEXTHDR_TCP) ||
(ip6h->nexthdr == NEXTHDR_UDP)) {
return 1;
} else if (ip6h->nexthdr == NEXTHDR_IPIP) {
iph = skb_header_pointer(skb, IPV6_HDR_LEN,
sizeof(_iphdr), &_iphdr);
if (unlikely(!iph))
return 0;
if ((iph->protocol == IPPROTO_TCP) ||
(iph->protocol == IPPROTO_UDP)) {
return 1;
}
}
break;
case ETH_P_8021Q:
return 1;
}
return 0;
}
static unsigned int
mtk_hnat_ipv6_nf_pre_routing(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (!skb)
goto drop;
if (!is_ppe_support_type(skb)) {
hnat_set_head_frags(state, skb, 1, hnat_set_alg);
return NF_ACCEPT;
}
hnat_set_head_frags(state, skb, -1, hnat_set_iif);
pre_routing_print(skb, state->in, state->out, __func__);
/* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/
if (do_ext2ge_fast_try(state->in, skb)) {
if (!do_hnat_ext_to_ge(skb, state->in, __func__))
return NF_STOLEN;
return NF_ACCEPT;
}
/* packets form ge -> external device
* For standalone wan interface
*/
if (do_ge2ext_fast(state->in, skb)) {
if (!do_hnat_ge_to_ext(skb, __func__))
return NF_STOLEN;
goto drop;
}
#if !(defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3))
/* MapE need remove ipv6 header and pingpong. */
if (do_mape_w2l_fast(state->in, skb)) {
if (!do_hnat_mape_w2l_fast(skb, state->in, __func__))
return NF_STOLEN;
else
return NF_ACCEPT;
}
if (is_from_mape(skb))
clr_from_extge(skb);
#endif
if (xlat_toggle)
mtk_464xlat_pre_process(skb);
return NF_ACCEPT;
drop:
if (skb)
printk_ratelimited(KERN_WARNING
"%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, state->in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_hnat_ipv4_nf_pre_routing(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (!skb)
goto drop;
if (!is_ppe_support_type(skb)) {
hnat_set_head_frags(state, skb, 1, hnat_set_alg);
return NF_ACCEPT;
}
hnat_set_head_frags(state, skb, -1, hnat_set_iif);
pre_routing_print(skb, state->in, state->out, __func__);
/* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/
if (do_ext2ge_fast_try(state->in, skb)) {
if (!do_hnat_ext_to_ge(skb, state->in, __func__))
return NF_STOLEN;
return NF_ACCEPT;
}
/* packets form ge -> external device
* For standalone wan interface
*/
if (do_ge2ext_fast(state->in, skb)) {
if (!do_hnat_ge_to_ext(skb, __func__))
return NF_STOLEN;
goto drop;
}
if (xlat_toggle)
mtk_464xlat_pre_process(skb);
return NF_ACCEPT;
drop:
if (skb)
printk_ratelimited(KERN_WARNING
"%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, state->in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_hnat_br_nf_local_in(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct vlan_ethhdr *veth;
if (!skb)
goto drop;
if (IS_HQOS_MODE && hnat_priv->data->whnat) {
veth = (struct vlan_ethhdr *)skb_mac_header(skb);
if (eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) {
skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff;
skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU;
}
}
if (!HAS_HQOS_MAGIC_TAG(skb) && !is_ppe_support_type(skb)) {
hnat_set_head_frags(state, skb, 1, hnat_set_alg);
return NF_ACCEPT;
}
hnat_set_head_frags(state, skb, -1, hnat_set_iif);
pre_routing_print(skb, state->in, state->out, __func__);
if (unlikely(debug_level >= 7)) {
hnat_cpu_reason_cnt(skb);
if (skb_hnat_reason(skb) == dbg_cpu_reason)
foe_dump_pkt(skb);
}
/* packets from external devices -> xxx ,step 1 , learning stage & bound stage*/
if ((skb_hnat_iface(skb) == FOE_MAGIC_EXT) && !is_from_extge(skb) &&
!is_multicast_ether_addr(eth_hdr(skb)->h_dest)) {
if (!hnat_priv->g_ppdev)
hnat_priv->g_ppdev = dev_get_by_name(&init_net, hnat_priv->ppd);
if (!do_hnat_ext_to_ge(skb, state->in, __func__))
return NF_STOLEN;
return NF_ACCEPT;
}
if (hnat_priv->data->whnat) {
if (skb_hnat_iface(skb) == FOE_MAGIC_EXT)
clr_from_extge(skb);
/* packets from external devices -> xxx ,step 2, learning stage */
if (do_ext2ge_fast_learn(state->in, skb) && (!qos_toggle ||
(qos_toggle && eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG))) {
if (!do_hnat_ext_to_ge2(skb, __func__))
return NF_STOLEN;
goto drop;
}
/* packets form ge -> external device */
if (do_ge2ext_fast(state->in, skb)) {
if (!do_hnat_ge_to_ext(skb, __func__))
return NF_STOLEN;
goto drop;
}
}
#if !(defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3))
/* MapE need remove ipv6 header and pingpong. (bridge mode) */
if (do_mape_w2l_fast(state->in, skb)) {
if (!do_hnat_mape_w2l_fast(skb, state->in, __func__))
return NF_STOLEN;
else
return NF_ACCEPT;
}
#endif
return NF_ACCEPT;
drop:
if (skb)
printk_ratelimited(KERN_WARNING
"%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, state->in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int hnat_ipv6_get_nexthop(struct sk_buff *skb,
const struct net_device *out,
struct flow_offload_hw_path *hw_path)
{
const struct in6_addr *ipv6_nexthop;
struct neighbour *neigh = NULL;
struct dst_entry *dst = skb_dst(skb);
struct ethhdr *eth;
if (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) {
memcpy(eth_hdr(skb)->h_source, hw_path->eth_src, ETH_ALEN);
memcpy(eth_hdr(skb)->h_dest, hw_path->eth_dest, ETH_ALEN);
return 0;
}
rcu_read_lock_bh();
ipv6_nexthop =
rt6_nexthop((struct rt6_info *)dst, &ipv6_hdr(skb)->daddr);
neigh = __ipv6_neigh_lookup_noref(dst->dev, ipv6_nexthop);
if (unlikely(!neigh)) {
dev_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI6)\n", __func__,
&ipv6_hdr(skb)->daddr);
rcu_read_unlock_bh();
return -1;
}
/* why do we get all zero ethernet address ? */
if (!is_valid_ether_addr(neigh->ha)) {
rcu_read_unlock_bh();
return -1;
}
if (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPIP) {
/*copy ether type for DS-Lite and MapE */
eth = (struct ethhdr *)(skb->data - ETH_HLEN);
eth->h_proto = skb->protocol;
} else {
eth = eth_hdr(skb);
}
ether_addr_copy(eth->h_dest, neigh->ha);
ether_addr_copy(eth->h_source, out->dev_addr);
rcu_read_unlock_bh();
return 0;
}
static unsigned int hnat_ipv4_get_nexthop(struct sk_buff *skb,
const struct net_device *out,
struct flow_offload_hw_path *hw_path)
{
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;
if (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) {
memcpy(eth_hdr(skb)->h_source, hw_path->eth_src, ETH_ALEN);
memcpy(eth_hdr(skb)->h_dest, hw_path->eth_dest, ETH_ALEN);
return 0;
}
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_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI4)\n", __func__,
&ip_hdr(skb)->daddr);
rcu_read_unlock_bh();
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 u16 ppe_get_chkbase(struct iphdr *iph)
{
u16 org_chksum = ntohs(iph->check);
u16 org_tot_len = ntohs(iph->tot_len);
u16 org_id = ntohs(iph->id);
u16 chksum_tmp, tot_len_tmp, id_tmp;
u32 tmp = 0;
u16 chksum_base = 0;
chksum_tmp = ~(org_chksum);
tot_len_tmp = ~(org_tot_len);
id_tmp = ~(org_id);
tmp = chksum_tmp + tot_len_tmp + id_tmp;
tmp = ((tmp >> 16) & 0x7) + (tmp & 0xFFFF);
tmp = ((tmp >> 16) & 0x7) + (tmp & 0xFFFF);
chksum_base = tmp & 0xFFFF;
return chksum_base;
}
struct foe_entry ppe_fill_L2_info(struct ethhdr *eth, struct foe_entry entry,
struct flow_offload_hw_path *hw_path)
{
switch ((int)entry.bfib1.pkt_type) {
case IPV4_HNAPT:
case IPV4_HNAT:
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 = hw_path->pppoe_sid;
break;
case IPV4_DSLITE:
case IPV4_MAP_E:
case IPV6_6RD:
case IPV6_5T_ROUTE:
case IPV6_3T_ROUTE:
case IPV6_HNAPT:
case IPV6_HNAT:
entry.ipv6_5t_route.dmac_hi = swab32(*((u32 *)eth->h_dest));
entry.ipv6_5t_route.dmac_lo = swab16(*((u16 *)&eth->h_dest[4]));
entry.ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source));
entry.ipv6_5t_route.smac_lo =
swab16(*((u16 *)&eth->h_source[4]));
entry.ipv6_5t_route.pppoe_id = hw_path->pppoe_sid;
break;
}
return entry;
}
struct foe_entry ppe_fill_info_blk(struct ethhdr *eth, struct foe_entry entry,
struct flow_offload_hw_path *hw_path)
{
entry.bfib1.psn = (hw_path->flags & FLOW_OFFLOAD_PATH_PPPOE) ? 1 : 0;
entry.bfib1.vlan_layer += (hw_path->flags & FLOW_OFFLOAD_PATH_VLAN) ? 1 : 0;
entry.bfib1.vpm = (entry.bfib1.vlan_layer) ? 1 : 0;
entry.bfib1.cah = 1;
entry.bfib1.time_stamp = (hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) ?
readl(hnat_priv->fe_base + 0x0010) & (0xFF) :
readl(hnat_priv->fe_base + 0x0010) & (0x7FFF);
switch ((int)entry.bfib1.pkt_type) {
case IPV4_HNAPT:
case IPV4_HNAT:
if (hnat_priv->data->mcast &&
is_multicast_ether_addr(&eth->h_dest[0])) {
entry.ipv4_hnapt.iblk2.mcast = 1;
if (hnat_priv->data->version == MTK_HNAT_V1_3) {
entry.bfib1.sta = 1;
entry.ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv);
}
} else {
entry.ipv4_hnapt.iblk2.mcast = 0;
}
entry.ipv4_hnapt.iblk2.port_ag =
(hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) ? 0xf : 0x3f;
break;
case IPV4_DSLITE:
case IPV4_MAP_E:
case IPV6_6RD:
case IPV6_5T_ROUTE:
case IPV6_3T_ROUTE:
case IPV6_HNAPT:
case IPV6_HNAT:
if (hnat_priv->data->mcast &&
is_multicast_ether_addr(&eth->h_dest[0])) {
entry.ipv6_5t_route.iblk2.mcast = 1;
if (hnat_priv->data->version == MTK_HNAT_V1_3) {
entry.bfib1.sta = 1;
entry.ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv);
}
} else {
entry.ipv6_5t_route.iblk2.mcast = 0;
}
entry.ipv6_5t_route.iblk2.port_ag =
(hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) ? 0xf : 0x3f;
break;
}
return entry;
}
static unsigned int skb_to_hnat_info(struct sk_buff *skb,
const struct net_device *dev,
struct foe_entry *foe,
struct flow_offload_hw_path *hw_path)
{
struct foe_entry entry = { 0 };
int whnat = IS_WHNAT(dev);
struct ethhdr *eth;
struct iphdr *iph;
struct ipv6hdr *ip6h;
struct tcpudphdr _ports;
const struct tcpudphdr *pptr;
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
u32 gmac = NR_DISCARD;
int udp = 0;
u32 qid = 0;
u32 port_id = 0;
int mape = 0;
ct = nf_ct_get(skb, &ctinfo);
if (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPIP)
/* point to ethernet header for DS-Lite and MapE */
eth = (struct ethhdr *)(skb->data - ETH_HLEN);
else
eth = eth_hdr(skb);
/*do not bind multicast if PPE mcast not enable*/
if (!hnat_priv->data->mcast && is_multicast_ether_addr(eth->h_dest))
return 0;
entry.bfib1.pkt_type = foe->udib1.pkt_type; /* Get packte type state*/
entry.bfib1.state = foe->udib1.state;
#if defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3)
entry.bfib1.sp = foe->udib1.sp;
#endif
switch (ntohs(eth->h_proto)) {
case ETH_P_IP:
iph = ip_hdr(skb);
switch (iph->protocol) {
case IPPROTO_UDP:
udp = 1;
/* fallthrough */
case IPPROTO_TCP:
entry.ipv4_hnapt.etype = htons(ETH_P_IP);
/* DS-Lite WAN->LAN */
if (entry.ipv4_hnapt.bfib1.pkt_type == IPV4_DSLITE ||
entry.ipv4_hnapt.bfib1.pkt_type == IPV4_MAP_E) {
entry.ipv4_dslite.sip = foe->ipv4_dslite.sip;
entry.ipv4_dslite.dip = foe->ipv4_dslite.dip;
entry.ipv4_dslite.sport =
foe->ipv4_dslite.sport;
entry.ipv4_dslite.dport =
foe->ipv4_dslite.dport;
#if defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3)
if (entry.bfib1.pkt_type == IPV4_MAP_E) {
pptr = skb_header_pointer(skb,
iph->ihl * 4,
sizeof(_ports),
&_ports);
if (unlikely(!pptr))
return -1;
entry.ipv4_mape.new_sip =
ntohl(iph->saddr);
entry.ipv4_mape.new_dip =
ntohl(iph->daddr);
entry.ipv4_mape.new_sport =
ntohs(pptr->src);
entry.ipv4_mape.new_dport =
ntohs(pptr->dst);
}
#endif
entry.ipv4_dslite.tunnel_sipv6_0 =
foe->ipv4_dslite.tunnel_sipv6_0;
entry.ipv4_dslite.tunnel_sipv6_1 =
foe->ipv4_dslite.tunnel_sipv6_1;
entry.ipv4_dslite.tunnel_sipv6_2 =
foe->ipv4_dslite.tunnel_sipv6_2;
entry.ipv4_dslite.tunnel_sipv6_3 =
foe->ipv4_dslite.tunnel_sipv6_3;
entry.ipv4_dslite.tunnel_dipv6_0 =
foe->ipv4_dslite.tunnel_dipv6_0;
entry.ipv4_dslite.tunnel_dipv6_1 =
foe->ipv4_dslite.tunnel_dipv6_1;
entry.ipv4_dslite.tunnel_dipv6_2 =
foe->ipv4_dslite.tunnel_dipv6_2;
entry.ipv4_dslite.tunnel_dipv6_3 =
foe->ipv4_dslite.tunnel_dipv6_3;
entry.ipv4_dslite.bfib1.rmt = 1;
entry.ipv4_dslite.iblk2.dscp = iph->tos;
entry.ipv4_dslite.vlan1 = hw_path->vlan_id;
if (hnat_priv->data->per_flow_accounting)
entry.ipv4_dslite.iblk2.mibf = 1;
} else {
entry.ipv4_hnapt.iblk2.dscp = iph->tos;
if (hnat_priv->data->per_flow_accounting)
entry.ipv4_hnapt.iblk2.mibf = 1;
entry.ipv4_hnapt.vlan1 = hw_path->vlan_id;
if (skb_vlan_tag_present(skb)) {
entry.bfib1.vlan_layer += 1;
if (entry.ipv4_hnapt.vlan1)
entry.ipv4_hnapt.vlan2 =
skb->vlan_tci;
else
entry.ipv4_hnapt.vlan1 =
skb->vlan_tci;
}
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;
entry.ipv4_hnapt.new_sip = ntohl(iph->saddr);
entry.ipv4_hnapt.new_dip = ntohl(iph->daddr);
}
entry.ipv4_hnapt.bfib1.udp = udp;
if (IS_IPV4_HNAPT(foe)) {
pptr = skb_header_pointer(skb, iph->ihl * 4,
sizeof(_ports),
&_ports);
if (unlikely(!pptr))
return -1;
entry.ipv4_hnapt.new_sport = ntohs(pptr->src);
entry.ipv4_hnapt.new_dport = ntohs(pptr->dst);
}
break;
default:
return -1;
}
trace_printk(
"[%s]skb->head=%p, skb->data=%p,ip_hdr=%p, skb->len=%d, skb->data_len=%d\n",
__func__, skb->head, skb->data, iph, skb->len,
skb->data_len);
break;
case ETH_P_IPV6:
ip6h = ipv6_hdr(skb);
switch (ip6h->nexthdr) {
case NEXTHDR_UDP:
udp = 1;
/* fallthrough */
case NEXTHDR_TCP: /* IPv6-5T or IPv6-3T */
entry.ipv6_5t_route.etype = htons(ETH_P_IPV6);
entry.ipv6_5t_route.vlan1 = hw_path->vlan_id;
if (skb_vlan_tag_present(skb)) {
entry.bfib1.vlan_layer += 1;
if (entry.ipv6_5t_route.vlan1)
entry.ipv6_5t_route.vlan2 =
skb->vlan_tci;
else
entry.ipv6_5t_route.vlan1 =
skb->vlan_tci;
}
if (hnat_priv->data->per_flow_accounting)
entry.ipv6_5t_route.iblk2.mibf = 1;
entry.ipv6_5t_route.bfib1.udp = udp;
if (IS_IPV6_6RD(foe)) {
entry.ipv6_5t_route.bfib1.rmt = 1;
entry.ipv6_6rd.tunnel_sipv4 =
foe->ipv6_6rd.tunnel_sipv4;
entry.ipv6_6rd.tunnel_dipv4 =
foe->ipv6_6rd.tunnel_dipv4;
}
entry.ipv6_3t_route.ipv6_sip0 =
foe->ipv6_3t_route.ipv6_sip0;
entry.ipv6_3t_route.ipv6_sip1 =
foe->ipv6_3t_route.ipv6_sip1;
entry.ipv6_3t_route.ipv6_sip2 =
foe->ipv6_3t_route.ipv6_sip2;
entry.ipv6_3t_route.ipv6_sip3 =
foe->ipv6_3t_route.ipv6_sip3;
entry.ipv6_3t_route.ipv6_dip0 =
foe->ipv6_3t_route.ipv6_dip0;
entry.ipv6_3t_route.ipv6_dip1 =
foe->ipv6_3t_route.ipv6_dip1;
entry.ipv6_3t_route.ipv6_dip2 =
foe->ipv6_3t_route.ipv6_dip2;
entry.ipv6_3t_route.ipv6_dip3 =
foe->ipv6_3t_route.ipv6_dip3;
if (IS_IPV6_3T_ROUTE(foe)) {
entry.ipv6_3t_route.prot =
foe->ipv6_3t_route.prot;
entry.ipv6_3t_route.hph =
foe->ipv6_3t_route.hph;
}
if (IS_IPV6_5T_ROUTE(foe) || IS_IPV6_6RD(foe)) {
entry.ipv6_5t_route.sport =
foe->ipv6_5t_route.sport;
entry.ipv6_5t_route.dport =
foe->ipv6_5t_route.dport;
}
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
if (ct && (ct->status & IPS_SRC_NAT)) {
entry.bfib1.pkt_type = IPV6_HNAPT;
if (IS_WAN(dev) || IS_DSA_WAN(dev)) {
entry.ipv6_hnapt.eg_ipv6_dir =
IPV6_SNAT;
entry.ipv6_hnapt.new_ipv6_ip0 =
ntohl(ip6h->saddr.s6_addr32[0]);
entry.ipv6_hnapt.new_ipv6_ip1 =
ntohl(ip6h->saddr.s6_addr32[1]);
entry.ipv6_hnapt.new_ipv6_ip2 =
ntohl(ip6h->saddr.s6_addr32[2]);
entry.ipv6_hnapt.new_ipv6_ip3 =
ntohl(ip6h->saddr.s6_addr32[3]);
} else {
entry.ipv6_hnapt.eg_ipv6_dir =
IPV6_DNAT;
entry.ipv6_hnapt.new_ipv6_ip0 =
ntohl(ip6h->daddr.s6_addr32[0]);
entry.ipv6_hnapt.new_ipv6_ip1 =
ntohl(ip6h->daddr.s6_addr32[1]);
entry.ipv6_hnapt.new_ipv6_ip2 =
ntohl(ip6h->daddr.s6_addr32[2]);
entry.ipv6_hnapt.new_ipv6_ip3 =
ntohl(ip6h->daddr.s6_addr32[3]);
}
pptr = skb_header_pointer(skb, IPV6_HDR_LEN,
sizeof(_ports),
&_ports);
if (unlikely(!pptr))
return -1;
entry.ipv6_hnapt.new_sport = ntohs(pptr->src);
entry.ipv6_hnapt.new_dport = ntohs(pptr->dst);
}
#endif
entry.ipv6_5t_route.iblk2.dscp =
(ip6h->priority << 4 |
(ip6h->flow_lbl[0] >> 4));
break;
case NEXTHDR_IPIP:
if ((!mape_toggle &&
entry.bfib1.pkt_type == IPV4_DSLITE) ||
(mape_toggle &&
entry.bfib1.pkt_type == IPV4_MAP_E)) {
/* DS-Lite LAN->WAN */
entry.ipv4_dslite.bfib1.udp =
foe->ipv4_dslite.bfib1.udp;
entry.ipv4_dslite.sip = foe->ipv4_dslite.sip;
entry.ipv4_dslite.dip = foe->ipv4_dslite.dip;
entry.ipv4_dslite.sport =
foe->ipv4_dslite.sport;
entry.ipv4_dslite.dport =
foe->ipv4_dslite.dport;
entry.ipv4_dslite.tunnel_sipv6_0 =
ntohl(ip6h->saddr.s6_addr32[0]);
entry.ipv4_dslite.tunnel_sipv6_1 =
ntohl(ip6h->saddr.s6_addr32[1]);
entry.ipv4_dslite.tunnel_sipv6_2 =
ntohl(ip6h->saddr.s6_addr32[2]);
entry.ipv4_dslite.tunnel_sipv6_3 =
ntohl(ip6h->saddr.s6_addr32[3]);
entry.ipv4_dslite.tunnel_dipv6_0 =
ntohl(ip6h->daddr.s6_addr32[0]);
entry.ipv4_dslite.tunnel_dipv6_1 =
ntohl(ip6h->daddr.s6_addr32[1]);
entry.ipv4_dslite.tunnel_dipv6_2 =
ntohl(ip6h->daddr.s6_addr32[2]);
entry.ipv4_dslite.tunnel_dipv6_3 =
ntohl(ip6h->daddr.s6_addr32[3]);
ppe_fill_flow_lbl(&entry, ip6h);
entry.ipv4_dslite.priority = ip6h->priority;
entry.ipv4_dslite.hop_limit = ip6h->hop_limit;
entry.ipv4_dslite.vlan1 = hw_path->vlan_id;
if (hnat_priv->data->per_flow_accounting)
entry.ipv4_dslite.iblk2.mibf = 1;
/* Map-E LAN->WAN record inner IPv4 header info. */
#if defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3)
if (mape_toggle) {
entry.ipv4_dslite.iblk2.dscp = foe->ipv4_dslite.iblk2.dscp;
entry.ipv4_mape.new_sip = foe->ipv4_mape.new_sip;
entry.ipv4_mape.new_dip = foe->ipv4_mape.new_dip;
entry.ipv4_mape.new_sport = foe->ipv4_mape.new_sport;
entry.ipv4_mape.new_dport = foe->ipv4_mape.new_dport;
}
#endif
} else if (mape_toggle &&
entry.bfib1.pkt_type == IPV4_HNAPT) {
/* MapE LAN -> WAN */
mape = 1;
entry.ipv4_hnapt.iblk2.dscp =
foe->ipv4_hnapt.iblk2.dscp;
if (hnat_priv->data->per_flow_accounting)
entry.ipv4_hnapt.iblk2.mibf = 1;
if (IS_GMAC1_MODE)
entry.ipv4_hnapt.vlan1 = 1;
else
entry.ipv4_hnapt.vlan1 = hw_path->vlan_id;
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;
entry.ipv4_hnapt.new_sip =
foe->ipv4_hnapt.new_sip;
entry.ipv4_hnapt.new_dip =
foe->ipv4_hnapt.new_dip;
entry.ipv4_hnapt.etype = htons(ETH_P_IP);
if (IS_HQOS_MODE) {
entry.ipv4_hnapt.iblk2.qid =
(hnat_priv->data->version ==
MTK_HNAT_V2 ||
hnat_priv->data->version ==
MTK_HNAT_V3) ?
skb->mark & 0x7f : skb->mark & 0xf;
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
if ((IS_HQOS_UL_MODE && IS_WAN(dev)) ||
(IS_HQOS_DL_MODE &&
IS_LAN_GRP(dev)) ||
(IS_PPPQ_MODE &&
IS_PPPQ_PATH(dev, skb)))
entry.ipv4_hnapt.tport_id = 1;
else
entry.ipv4_hnapt.tport_id = 0;
#else
entry.ipv4_hnapt.iblk2.fqos = 1;
#endif
}
entry.ipv4_hnapt.bfib1.udp =
foe->ipv4_hnapt.bfib1.udp;
entry.ipv4_hnapt.new_sport =
foe->ipv4_hnapt.new_sport;
entry.ipv4_hnapt.new_dport =
foe->ipv4_hnapt.new_dport;
mape_l2w_v6h = *ip6h;
}
break;
default:
return -1;
}
trace_printk(
"[%s]skb->head=%p, skb->data=%p,ipv6_hdr=%p, skb->len=%d, skb->data_len=%d\n",
__func__, skb->head, skb->data, ip6h, skb->len,
skb->data_len);
break;
default:
iph = ip_hdr(skb);
switch (entry.bfib1.pkt_type) {
case IPV6_6RD: /* 6RD LAN->WAN */
entry.ipv6_6rd.ipv6_sip0 = foe->ipv6_6rd.ipv6_sip0;
entry.ipv6_6rd.ipv6_sip1 = foe->ipv6_6rd.ipv6_sip1;
entry.ipv6_6rd.ipv6_sip2 = foe->ipv6_6rd.ipv6_sip2;
entry.ipv6_6rd.ipv6_sip3 = foe->ipv6_6rd.ipv6_sip3;
entry.ipv6_6rd.ipv6_dip0 = foe->ipv6_6rd.ipv6_dip0;
entry.ipv6_6rd.ipv6_dip1 = foe->ipv6_6rd.ipv6_dip1;
entry.ipv6_6rd.ipv6_dip2 = foe->ipv6_6rd.ipv6_dip2;
entry.ipv6_6rd.ipv6_dip3 = foe->ipv6_6rd.ipv6_dip3;
entry.ipv6_6rd.sport = foe->ipv6_6rd.sport;
entry.ipv6_6rd.dport = foe->ipv6_6rd.dport;
entry.ipv6_6rd.tunnel_sipv4 = ntohl(iph->saddr);
entry.ipv6_6rd.tunnel_dipv4 = ntohl(iph->daddr);
entry.ipv6_6rd.hdr_chksum = ppe_get_chkbase(iph);
entry.ipv6_6rd.flag = (ntohs(iph->frag_off) >> 13);
entry.ipv6_6rd.ttl = iph->ttl;
entry.ipv6_6rd.dscp = iph->tos;
entry.ipv6_6rd.per_flow_6rd_id = 1;
entry.ipv6_6rd.vlan1 = hw_path->vlan_id;
if (hnat_priv->data->per_flow_accounting)
entry.ipv6_6rd.iblk2.mibf = 1;
break;
default:
return -1;
}
}
/* Fill Layer2 Info.*/
entry = ppe_fill_L2_info(eth, entry, hw_path);
/* Fill Info Blk*/
entry = ppe_fill_info_blk(eth, entry, hw_path);
if (IS_LAN(dev)) {
if (IS_DSA_LAN(dev))
port_id = hnat_dsa_fill_stag(dev, &entry, hw_path,
ntohs(eth->h_proto),
mape);
if (IS_BOND_MODE)
gmac = ((skb_hnat_entry(skb) >> 1) % hnat_priv->gmac_num) ?
NR_GMAC2_PORT : NR_GMAC1_PORT;
else
gmac = NR_GMAC1_PORT;
} else if (IS_LAN2(dev)) {
gmac = NR_GMAC3_PORT;
} else if (IS_WAN(dev)) {
if (IS_DSA_WAN(dev))
port_id = hnat_dsa_fill_stag(dev,&entry, hw_path,
ntohs(eth->h_proto),
mape);
if (mape_toggle && mape == 1) {
gmac = NR_PDMA_PORT;
/* Set act_dp = wan_dev */
entry.ipv4_hnapt.act_dp = dev->ifindex;
} else {
gmac = (IS_GMAC1_MODE) ? NR_GMAC1_PORT : NR_GMAC2_PORT;
}
} else if (IS_EXT(dev) && (FROM_GE_PPD(skb) || FROM_GE_LAN_GRP(skb) ||
FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb) || FROM_WED(skb))) {
if (!hnat_priv->data->whnat && IS_GMAC1_MODE) {
entry.bfib1.vpm = 1;
entry.bfib1.vlan_layer = 1;
if (FROM_GE_LAN(skb))
entry.ipv4_hnapt.vlan1 = 1;
else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))
entry.ipv4_hnapt.vlan1 = 2;
}
trace_printk("learn of lan or wan(iif=%x) --> %s(ext)\n",
skb_hnat_iface(skb), dev->name);
/* To CPU then stolen by pre-routing hant hook of LAN/WAN
* Current setting is PDMA RX.
*/
gmac = NR_PDMA_PORT;
if (IS_IPV4_GRP(foe))
entry.ipv4_hnapt.act_dp = dev->ifindex;
else
entry.ipv6_5t_route.act_dp = dev->ifindex;
} else {
printk_ratelimited(KERN_WARNING
"Unknown case of dp, iif=%x --> %s\n",
skb_hnat_iface(skb), dev->name);
return 0;
}
if (IS_HQOS_MODE || skb->mark >= MAX_PPPQ_PORT_NUM)
qid = skb->mark & (MTK_QDMA_TX_MASK);
else if (IS_PPPQ_MODE && IS_PPPQ_PATH(dev, skb))
qid = port_id & MTK_QDMA_TX_MASK;
else
qid = 0;
if (IS_IPV4_GRP(foe)) {
entry.ipv4_hnapt.iblk2.dp = gmac;
entry.ipv4_hnapt.iblk2.port_mg =
(hnat_priv->data->version == MTK_HNAT_V1_1) ? 0x3f : 0;
if (qos_toggle) {
if (hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) {
entry.ipv4_hnapt.iblk2.qid = qid & 0x7f;
} else {
/* qid[5:0]= port_mg[1:0]+ qid[3:0] */
entry.ipv4_hnapt.iblk2.qid = qid & 0xf;
if (hnat_priv->data->version != MTK_HNAT_V1_1)
entry.ipv4_hnapt.iblk2.port_mg |=
((qid >> 4) & 0x3);
if (((IS_EXT(dev) && (FROM_GE_LAN_GRP(skb) ||
FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) ||
((mape_toggle && mape == 1) && !FROM_EXT(skb))) &&
(!whnat)) {
entry.ipv4_hnapt.etype = htons(HQOS_MAGIC_TAG);
entry.ipv4_hnapt.vlan1 = skb_hnat_entry(skb);
entry.bfib1.vlan_layer = 1;
}
}
if (FROM_EXT(skb) || skb_hnat_sport(skb) == NR_QDMA_PORT ||
(IS_PPPQ_MODE && !IS_DSA_LAN(dev) && !IS_DSA_WAN(dev)))
entry.ipv4_hnapt.iblk2.fqos = 0;
else
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
if ((IS_HQOS_UL_MODE && IS_WAN(dev)) ||
(IS_HQOS_DL_MODE && IS_LAN_GRP(dev)) ||
(IS_PPPQ_MODE &&
IS_PPPQ_PATH(dev, skb)))
entry.ipv4_hnapt.tport_id = 1;
else
entry.ipv4_hnapt.tport_id = 0;
#else
entry.ipv4_hnapt.iblk2.fqos =
(!IS_PPPQ_MODE ||
(IS_PPPQ_MODE &&
IS_PPPQ_PATH(dev, skb)));
#endif
} else {
entry.ipv4_hnapt.iblk2.fqos = 0;
}
} else {
entry.ipv6_5t_route.iblk2.dp = gmac;
entry.ipv6_5t_route.iblk2.port_mg =
(hnat_priv->data->version == MTK_HNAT_V1_1) ? 0x3f : 0;
if (qos_toggle) {
if (hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) {
entry.ipv6_5t_route.iblk2.qid = qid & 0x7f;
} else {
/* qid[5:0]= port_mg[1:0]+ qid[3:0] */
entry.ipv6_5t_route.iblk2.qid = qid & 0xf;
if (hnat_priv->data->version != MTK_HNAT_V1_1)
entry.ipv6_5t_route.iblk2.port_mg |=
((qid >> 4) & 0x3);
if (IS_EXT(dev) && (FROM_GE_LAN_GRP(skb) ||
FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) &&
(!whnat)) {
entry.ipv6_5t_route.etype = htons(HQOS_MAGIC_TAG);
entry.ipv6_5t_route.vlan1 = skb_hnat_entry(skb);
entry.bfib1.vlan_layer = 1;
}
}
if (FROM_EXT(skb) ||
(IS_PPPQ_MODE && !IS_DSA_LAN(dev) && !IS_DSA_WAN(dev)))
entry.ipv6_5t_route.iblk2.fqos = 0;
else
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
if ((IS_HQOS_UL_MODE && IS_WAN(dev)) ||
(IS_HQOS_DL_MODE && IS_LAN_GRP(dev)) ||
(IS_PPPQ_MODE &&
IS_PPPQ_PATH(dev, skb)))
entry.ipv6_5t_route.tport_id = 1;
else
entry.ipv6_5t_route.tport_id = 0;
#else
entry.ipv6_5t_route.iblk2.fqos =
(!IS_PPPQ_MODE ||
(IS_PPPQ_MODE &&
IS_PPPQ_PATH(dev, skb)));
#endif
} else {
entry.ipv6_5t_route.iblk2.fqos = 0;
}
}
/* The INFO2.port_mg and 2nd VLAN ID fields of PPE entry are redefined
* by Wi-Fi whnat engine. These data and INFO2.dp will be updated and
* the entry is set to BIND state in mtk_sw_nat_hook_tx().
*/
if (!whnat) {
entry.bfib1.ttl = 1;
entry.bfib1.state = BIND;
}
wmb();
memcpy(foe, &entry, sizeof(entry));
/*reset statistic for this entry*/
if (hnat_priv->data->per_flow_accounting &&
skb_hnat_entry(skb) < hnat_priv->foe_etry_num &&
skb_hnat_ppe(skb) < CFG_PPE_NUM)
memset(&hnat_priv->acct[skb_hnat_ppe(skb)][skb_hnat_entry(skb)],
0, sizeof(struct mib_entry));
skb_hnat_filled(skb) = HNAT_INFO_FILLED;
return 0;
}
int mtk_sw_nat_hook_tx(struct sk_buff *skb, int gmac_no)
{
struct foe_entry *entry;
struct ethhdr *eth;
struct hnat_bind_info_blk bfib1_tx;
if (skb_hnat_alg(skb) || !is_hnat_info_filled(skb) ||
!is_magic_tag_valid(skb) || !IS_SPACE_AVAILABLE_HEAD(skb))
return NF_ACCEPT;
trace_printk(
"[%s]entry=%x reason=%x gmac_no=%x wdmaid=%x rxid=%x wcid=%x bssid=%x\n",
__func__, skb_hnat_entry(skb), skb_hnat_reason(skb), gmac_no,
skb_hnat_wdma_id(skb), skb_hnat_bss_id(skb),
skb_hnat_wc_id(skb), skb_hnat_rx_id(skb));
if ((gmac_no != NR_WDMA0_PORT) && (gmac_no != NR_WDMA1_PORT) &&
(gmac_no != NR_WHNAT_WDMA_PORT))
return NF_ACCEPT;
if (unlikely(!skb_mac_header_was_set(skb)))
return NF_ACCEPT;
if (!skb_hnat_is_hashed(skb))
return NF_ACCEPT;
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return NF_ACCEPT;
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
if (entry_hnat_is_bound(entry))
return NF_ACCEPT;
if (skb_hnat_reason(skb) != HIT_UNBIND_RATE_REACH)
return NF_ACCEPT;
eth = eth_hdr(skb);
memcpy(&bfib1_tx, &entry->bfib1, sizeof(entry->bfib1));
/*not bind multicast if PPE mcast not enable*/
if (!hnat_priv->data->mcast) {
if (is_multicast_ether_addr(eth->h_dest))
return NF_ACCEPT;
if (IS_IPV4_GRP(entry))
entry->ipv4_hnapt.iblk2.mcast = 0;
else
entry->ipv6_5t_route.iblk2.mcast = 0;
}
/* Some mt_wifi virtual interfaces, such as apcli,
* will change the smac for specail purpose.
*/
switch ((int)bfib1_tx.pkt_type) {
case IPV4_HNAPT:
case IPV4_HNAT:
entry->ipv4_hnapt.smac_hi = swab32(*((u32 *)eth->h_source));
entry->ipv4_hnapt.smac_lo = swab16(*((u16 *)&eth->h_source[4]));
break;
case IPV4_DSLITE:
case IPV4_MAP_E:
case IPV6_6RD:
case IPV6_5T_ROUTE:
case IPV6_3T_ROUTE:
case IPV6_HNAPT:
case IPV6_HNAT:
entry->ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source));
entry->ipv6_5t_route.smac_lo = swab16(*((u16 *)&eth->h_source[4]));
break;
}
if (skb->vlan_tci) {
bfib1_tx.vlan_layer = 1;
bfib1_tx.vpm = 1;
if (IS_IPV4_GRP(entry)) {
entry->ipv4_hnapt.etype = htons(ETH_P_8021Q);
entry->ipv4_hnapt.vlan1 = skb->vlan_tci;
} else if (IS_IPV6_GRP(entry)) {
entry->ipv6_5t_route.etype = htons(ETH_P_8021Q);
entry->ipv6_5t_route.vlan1 = skb->vlan_tci;
}
} else {
bfib1_tx.vpm = 0;
bfib1_tx.vlan_layer = 0;
}
/* MT7622 wifi hw_nat not support QoS */
if (IS_IPV4_GRP(entry)) {
entry->ipv4_hnapt.iblk2.fqos = 0;
if ((hnat_priv->data->version == MTK_HNAT_V1_2 &&
gmac_no == NR_WHNAT_WDMA_PORT) ||
((hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) &&
(gmac_no == NR_WDMA0_PORT || gmac_no == NR_WDMA1_PORT))) {
entry->ipv4_hnapt.winfo.bssid = skb_hnat_bss_id(skb);
entry->ipv4_hnapt.winfo.wcid = skb_hnat_wc_id(skb);
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
entry->ipv4_hnapt.tport_id = IS_HQOS_DL_MODE ? 1 : 0;
entry->ipv4_hnapt.iblk2.rxid = skb_hnat_rx_id(skb);
entry->ipv4_hnapt.iblk2.winfoi = 1;
entry->ipv4_hnapt.winfo_pao.usr_info =
skb_hnat_usr_info(skb);
entry->ipv4_hnapt.winfo_pao.tid = skb_hnat_tid(skb);
entry->ipv4_hnapt.winfo_pao.is_fixedrate =
skb_hnat_is_fixedrate(skb);
entry->ipv4_hnapt.winfo_pao.is_prior =
skb_hnat_is_prior(skb);
entry->ipv4_hnapt.winfo_pao.is_sp = skb_hnat_is_sp(skb);
entry->ipv4_hnapt.winfo_pao.hf = skb_hnat_hf(skb);
entry->ipv4_hnapt.winfo_pao.amsdu = skb_hnat_amsdu(skb);
#elif defined(CONFIG_MEDIATEK_NETSYS_V2)
entry->ipv4_hnapt.iblk2.rxid = skb_hnat_rx_id(skb);
entry->ipv4_hnapt.iblk2.winfoi = 1;
#else
entry->ipv4_hnapt.winfo.rxid = skb_hnat_rx_id(skb);
entry->ipv4_hnapt.iblk2w.winfoi = 1;
entry->ipv4_hnapt.iblk2w.wdmaid = skb_hnat_wdma_id(skb);
#endif
} else {
if (IS_GMAC1_MODE && !hnat_dsa_is_enable(hnat_priv)) {
bfib1_tx.vpm = 1;
bfib1_tx.vlan_layer = 1;
if (FROM_GE_LAN_GRP(skb))
entry->ipv4_hnapt.vlan1 = 1;
else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))
entry->ipv4_hnapt.vlan1 = 2;
}
if (IS_HQOS_MODE &&
(FROM_GE_LAN_GRP(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) {
bfib1_tx.vpm = 0;
bfib1_tx.vlan_layer = 1;
entry->ipv4_hnapt.etype = htons(HQOS_MAGIC_TAG);
entry->ipv4_hnapt.vlan1 = skb_hnat_entry(skb);
entry->ipv4_hnapt.iblk2.fqos = 1;
}
}
entry->ipv4_hnapt.iblk2.dp = gmac_no;
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
} else if (IS_IPV6_HNAPT(entry) || IS_IPV6_HNAT(entry)) {
entry->ipv6_hnapt.iblk2.dp = gmac_no;
entry->ipv6_hnapt.iblk2.rxid = skb_hnat_rx_id(skb);
entry->ipv6_hnapt.iblk2.winfoi = 1;
entry->ipv6_hnapt.winfo.bssid = skb_hnat_bss_id(skb);
entry->ipv6_hnapt.winfo.wcid = skb_hnat_wc_id(skb);
entry->ipv6_hnapt.winfo_pao.usr_info = skb_hnat_usr_info(skb);
entry->ipv6_hnapt.winfo_pao.tid = skb_hnat_tid(skb);
entry->ipv6_hnapt.winfo_pao.is_fixedrate =
skb_hnat_is_fixedrate(skb);
entry->ipv6_hnapt.winfo_pao.is_prior = skb_hnat_is_prior(skb);
entry->ipv6_hnapt.winfo_pao.is_sp = skb_hnat_is_sp(skb);
entry->ipv6_hnapt.winfo_pao.hf = skb_hnat_hf(skb);
entry->ipv6_hnapt.winfo_pao.amsdu = skb_hnat_amsdu(skb);
entry->ipv6_hnapt.tport_id = IS_HQOS_DL_MODE ? 1 : 0;
#endif
} else {
entry->ipv6_5t_route.iblk2.fqos = 0;
if ((hnat_priv->data->version == MTK_HNAT_V1_2 &&
gmac_no == NR_WHNAT_WDMA_PORT) ||
((hnat_priv->data->version == MTK_HNAT_V2 ||
hnat_priv->data->version == MTK_HNAT_V3) &&
(gmac_no == NR_WDMA0_PORT || gmac_no == NR_WDMA1_PORT))) {
entry->ipv6_5t_route.winfo.bssid = skb_hnat_bss_id(skb);
entry->ipv6_5t_route.winfo.wcid = skb_hnat_wc_id(skb);
#if defined(CONFIG_MEDIATEK_NETSYS_V3)
entry->ipv6_5t_route.tport_id = IS_HQOS_DL_MODE ? 1 : 0;
entry->ipv6_5t_route.iblk2.rxid = skb_hnat_rx_id(skb);
entry->ipv6_5t_route.iblk2.winfoi = 1;
entry->ipv6_5t_route.winfo_pao.usr_info =
skb_hnat_usr_info(skb);
entry->ipv6_5t_route.winfo_pao.tid =
skb_hnat_tid(skb);
entry->ipv6_5t_route.winfo_pao.is_fixedrate =
skb_hnat_is_fixedrate(skb);
entry->ipv6_5t_route.winfo_pao.is_prior =
skb_hnat_is_prior(skb);
entry->ipv6_5t_route.winfo_pao.is_sp =
skb_hnat_is_sp(skb);
entry->ipv6_5t_route.winfo_pao.hf =
skb_hnat_hf(skb);
entry->ipv6_5t_route.winfo_pao.amsdu =
skb_hnat_amsdu(skb);
#elif defined(CONFIG_MEDIATEK_NETSYS_V2)
entry->ipv6_5t_route.iblk2.rxid = skb_hnat_rx_id(skb);
entry->ipv6_5t_route.iblk2.winfoi = 1;
#else
entry->ipv6_5t_route.winfo.rxid = skb_hnat_rx_id(skb);
entry->ipv6_5t_route.iblk2w.winfoi = 1;
entry->ipv6_5t_route.iblk2w.wdmaid = skb_hnat_wdma_id(skb);
#endif
} else {
if (IS_GMAC1_MODE && !hnat_dsa_is_enable(hnat_priv)) {
bfib1_tx.vpm = 1;
bfib1_tx.vlan_layer = 1;
if (FROM_GE_LAN_GRP(skb))
entry->ipv6_5t_route.vlan1 = 1;
else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))
entry->ipv6_5t_route.vlan1 = 2;
}
if (IS_HQOS_MODE &&
(FROM_GE_LAN_GRP(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb))) {
bfib1_tx.vpm = 0;
bfib1_tx.vlan_layer = 1;
entry->ipv6_5t_route.etype = htons(HQOS_MAGIC_TAG);
entry->ipv6_5t_route.vlan1 = skb_hnat_entry(skb);
entry->ipv6_5t_route.iblk2.fqos = 1;
}
}
entry->ipv6_5t_route.iblk2.dp = gmac_no;
}
bfib1_tx.ttl = 1;
bfib1_tx.state = BIND;
wmb();
memcpy(&entry->bfib1, &bfib1_tx, sizeof(bfib1_tx));
return NF_ACCEPT;
}
int mtk_sw_nat_hook_rx(struct sk_buff *skb)
{
if (!IS_SPACE_AVAILABLE_HEAD(skb) || !FROM_WED(skb)) {
skb_hnat_magic_tag(skb) = 0;
return NF_ACCEPT;
}
skb_hnat_alg(skb) = 0;
skb_hnat_filled(skb) = 0;
skb_hnat_magic_tag(skb) = HNAT_MAGIC_TAG;
if (skb_hnat_iface(skb) == FOE_MAGIC_WED0)
skb_hnat_sport(skb) = NR_WDMA0_PORT;
else if (skb_hnat_iface(skb) == FOE_MAGIC_WED1)
skb_hnat_sport(skb) = NR_WDMA1_PORT;
return NF_ACCEPT;
}
void mtk_ppe_dev_register_hook(struct net_device *dev)
{
int i, number = 0;
struct extdev_entry *ext_entry;
for (i = 1; i < MAX_IF_NUM; i++) {
if (hnat_priv->wifi_hook_if[i] == dev) {
pr_info("%s : %s has been registered in wifi_hook_if table[%d]\n",
__func__, dev->name, i);
return;
}
}
for (i = 1; i < MAX_IF_NUM; i++) {
if (!hnat_priv->wifi_hook_if[i]) {
if (find_extif_from_devname(dev->name)) {
extif_set_dev(dev);
goto add_wifi_hook_if;
}
number = get_ext_device_number();
if (number >= MAX_EXT_DEVS) {
pr_info("%s : extdev array is full. %s is not registered\n",
__func__, dev->name);
return;
}
ext_entry = kzalloc(sizeof(*ext_entry), GFP_KERNEL);
if (!ext_entry)
return;
strncpy(ext_entry->name, dev->name, IFNAMSIZ - 1);
dev_hold(dev);
ext_entry->dev = dev;
ext_if_add(ext_entry);
add_wifi_hook_if:
dev_hold(dev);
hnat_priv->wifi_hook_if[i] = dev;
break;
}
}
pr_info("%s : ineterface %s register (%d)\n", __func__, dev->name, i);
}
void mtk_ppe_dev_unregister_hook(struct net_device *dev)
{
int i;
for (i = 1; i < MAX_IF_NUM; i++) {
if (hnat_priv->wifi_hook_if[i] == dev) {
hnat_priv->wifi_hook_if[i] = NULL;
dev_put(dev);
break;
}
}
extif_put_dev(dev);
pr_info("%s : ineterface %s set null (%d)\n", __func__, dev->name, i);
}
static unsigned int mtk_hnat_accel_type(struct sk_buff *skb)
{
struct dst_entry *dst;
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
const struct nf_conn_help *help;
/* Do not accelerate 1st round of xfrm flow, and 2nd round of xfrm flow
* is from local_out which is also filtered in sanity check.
*/
dst = skb_dst(skb);
if (dst && dst_xfrm(dst))
return 0;
ct = nf_ct_get(skb, &ctinfo);
if (!ct)
return 1;
/* rcu_read_lock()ed by nf_hook_slow */
help = nfct_help(ct);
if (help && rcu_dereference(help->helper))
return 0;
return 1;
}
static void mtk_hnat_dscp_update(struct sk_buff *skb, struct foe_entry *entry)
{
struct iphdr *iph;
struct ethhdr *eth;
struct ipv6hdr *ip6h;
bool flag = false;
eth = eth_hdr(skb);
switch (ntohs(eth->h_proto)) {
case ETH_P_IP:
iph = ip_hdr(skb);
if (IS_IPV4_GRP(entry) && entry->ipv4_hnapt.iblk2.dscp != iph->tos)
flag = true;
break;
case ETH_P_IPV6:
ip6h = ipv6_hdr(skb);
if ((IS_IPV6_3T_ROUTE(entry) || IS_IPV6_5T_ROUTE(entry)) &&
(entry->ipv6_5t_route.iblk2.dscp !=
(ip6h->priority << 4 | (ip6h->flow_lbl[0] >> 4))))
flag = true;
break;
default:
return;
}
if (flag) {
if (debug_level >= 2)
pr_info("Delete entry idx=%d.\n", skb_hnat_entry(skb));
memset(entry, 0, sizeof(struct foe_entry));
hnat_cache_ebl(1);
}
}
static void mtk_hnat_nf_update(struct sk_buff *skb)
{
struct nf_conn *ct;
struct nf_conn_acct *acct;
struct nf_conn_counter *counter;
enum ip_conntrack_info ctinfo;
struct hnat_accounting diff;
ct = nf_ct_get(skb, &ctinfo);
if (ct) {
if (!hnat_get_count(hnat_priv, skb_hnat_ppe(skb), skb_hnat_entry(skb), &diff))
return;
acct = nf_conn_acct_find(ct);
if (acct) {
counter = acct->counter;
atomic64_add(diff.packets, &counter[CTINFO2DIR(ctinfo)].packets);
atomic64_add(diff.bytes, &counter[CTINFO2DIR(ctinfo)].bytes);
}
}
}
int mtk_464xlat_fill_mac(struct foe_entry *entry, struct sk_buff *skb,
const struct net_device *out, bool l2w)
{
const struct in6_addr *ipv6_nexthop;
struct dst_entry *dst = skb_dst(skb);
struct neighbour *neigh = NULL;
struct rtable *rt = (struct rtable *)dst;
u32 nexthop;
rcu_read_lock_bh();
if (l2w) {
ipv6_nexthop = rt6_nexthop((struct rt6_info *)dst,
&ipv6_hdr(skb)->daddr);
neigh = __ipv6_neigh_lookup_noref(dst->dev, ipv6_nexthop);
if (unlikely(!neigh)) {
dev_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI6)\n",
__func__, &ipv6_hdr(skb)->daddr);
rcu_read_unlock_bh();
return -1;
}
} else {
nexthop = (__force u32)rt_nexthop(rt, ip_hdr(skb)->daddr);
neigh = __ipv4_neigh_lookup_noref(dst->dev, nexthop);
if (unlikely(!neigh)) {
dev_notice(hnat_priv->dev, "%s:No neigh (daddr=%pI4)\n",
__func__, &ip_hdr(skb)->daddr);
rcu_read_unlock_bh();
return -1;
}
}
rcu_read_unlock_bh();
entry->ipv4_dslite.dmac_hi = swab32(*((u32 *)neigh->ha));
entry->ipv4_dslite.dmac_lo = swab16(*((u16 *)&neigh->ha[4]));
entry->ipv4_dslite.smac_hi = swab32(*((u32 *)out->dev_addr));
entry->ipv4_dslite.smac_lo = swab16(*((u16 *)&out->dev_addr[4]));
return 0;
}
int mtk_464xlat_get_hash(struct sk_buff *skb, u32 *hash, bool l2w)
{
struct in6_addr addr_v6, prefix;
struct ipv6hdr *ip6h;
struct iphdr *iph;
struct tcpudphdr *pptr, _ports;
struct foe_entry tmp;
u32 addr, protoff;
if (l2w) {
ip6h = ipv6_hdr(skb);
if (mtk_ppe_get_xlat_v4_by_v6(&ip6h->daddr, &addr))
return -1;
protoff = IPV6_HDR_LEN;
tmp.bfib1.pkt_type = IPV4_HNAPT;
tmp.ipv4_hnapt.sip = ntohl(ip6h->saddr.s6_addr32[3]);
tmp.ipv4_hnapt.dip = ntohl(addr);
} else {
iph = ip_hdr(skb);
if (mtk_ppe_get_xlat_v6_by_v4(&iph->saddr, &addr_v6, &prefix))
return -1;
protoff = iph->ihl * 4;
tmp.bfib1.pkt_type = IPV6_5T_ROUTE;
tmp.ipv6_5t_route.ipv6_sip0 = ntohl(addr_v6.s6_addr32[0]);
tmp.ipv6_5t_route.ipv6_sip1 = ntohl(addr_v6.s6_addr32[1]);
tmp.ipv6_5t_route.ipv6_sip2 = ntohl(addr_v6.s6_addr32[2]);
tmp.ipv6_5t_route.ipv6_sip3 = ntohl(addr_v6.s6_addr32[3]);
tmp.ipv6_5t_route.ipv6_dip0 = ntohl(prefix.s6_addr32[0]);
tmp.ipv6_5t_route.ipv6_dip1 = ntohl(prefix.s6_addr32[1]);
tmp.ipv6_5t_route.ipv6_dip2 = ntohl(prefix.s6_addr32[2]);
tmp.ipv6_5t_route.ipv6_dip3 = ntohl(iph->daddr);
}
pptr = skb_header_pointer(skb, protoff,
sizeof(_ports), &_ports);
if (unlikely(!pptr))
return -1;
if (l2w) {
tmp.ipv4_hnapt.sport = ntohs(pptr->src);
tmp.ipv4_hnapt.dport = ntohs(pptr->dst);
} else {
tmp.ipv6_5t_route.sport = ntohs(pptr->src);
tmp.ipv6_5t_route.dport = ntohs(pptr->dst);
}
*hash = hnat_get_ppe_hash(&tmp);
return 0;
}
void mtk_464xlat_fill_info1(struct foe_entry *entry,
struct sk_buff *skb, bool l2w)
{
entry->bfib1.cah = 1;
entry->bfib1.ttl = 1;
entry->bfib1.state = BIND;
entry->bfib1.time_stamp = readl(hnat_priv->fe_base + 0x0010) & (0xFF);
if (l2w) {
entry->bfib1.pkt_type = IPV4_DSLITE;
entry->bfib1.udp = ipv6_hdr(skb)->nexthdr ==
IPPROTO_UDP ? 1 : 0;
} else {
entry->bfib1.pkt_type = IPV6_6RD;
entry->bfib1.udp = ip_hdr(skb)->protocol ==
IPPROTO_UDP ? 1 : 0;
}
}
void mtk_464xlat_fill_info2(struct foe_entry *entry, bool l2w)
{
entry->ipv4_dslite.iblk2.mibf = 1;
entry->ipv4_dslite.iblk2.port_ag = 0xF;
if (l2w)
entry->ipv4_dslite.iblk2.dp = NR_GMAC2_PORT;
else
entry->ipv6_6rd.iblk2.dp = NR_GMAC1_PORT;
}
void mtk_464xlat_fill_ipv4(struct foe_entry *entry, struct sk_buff *skb,
struct foe_entry *foe, bool l2w)
{
struct iphdr *iph;
if (l2w) {
entry->ipv4_dslite.sip = foe->ipv4_dslite.sip;
entry->ipv4_dslite.dip = foe->ipv4_dslite.dip;
entry->ipv4_dslite.sport = foe->ipv4_dslite.sport;
entry->ipv4_dslite.dport = foe->ipv4_dslite.dport;
} else {
iph = ip_hdr(skb);
entry->ipv6_6rd.tunnel_sipv4 = ntohl(iph->saddr);
entry->ipv6_6rd.tunnel_dipv4 = ntohl(iph->daddr);
entry->ipv6_6rd.sport = foe->ipv6_6rd.sport;
entry->ipv6_6rd.dport = foe->ipv6_6rd.dport;
entry->ipv6_6rd.hdr_chksum = ppe_get_chkbase(iph);
entry->ipv6_6rd.ttl = iph->ttl;
entry->ipv6_6rd.dscp = iph->tos;
entry->ipv6_6rd.flag = (ntohs(iph->frag_off) >> 13);
}
}
int mtk_464xlat_fill_ipv6(struct foe_entry *entry, struct sk_buff *skb,
struct foe_entry *foe, bool l2w)
{
struct ipv6hdr *ip6h;
struct in6_addr addr_v6, prefix;
u32 addr;
if (l2w) {
ip6h = ipv6_hdr(skb);
if (mtk_ppe_get_xlat_v4_by_v6(&ip6h->daddr, &addr))
return -1;
if (mtk_ppe_get_xlat_v6_by_v4(&addr, &addr_v6, &prefix))
return -1;
entry->ipv4_dslite.tunnel_sipv6_0 =
ntohl(prefix.s6_addr32[0]);
entry->ipv4_dslite.tunnel_sipv6_1 =
ntohl(ip6h->saddr.s6_addr32[1]);
entry->ipv4_dslite.tunnel_sipv6_2 =
ntohl(ip6h->saddr.s6_addr32[2]);
entry->ipv4_dslite.tunnel_sipv6_3 =
ntohl(ip6h->saddr.s6_addr32[3]);
entry->ipv4_dslite.tunnel_dipv6_0 =
ntohl(ip6h->daddr.s6_addr32[0]);
entry->ipv4_dslite.tunnel_dipv6_1 =
ntohl(ip6h->daddr.s6_addr32[1]);
entry->ipv4_dslite.tunnel_dipv6_2 =
ntohl(ip6h->daddr.s6_addr32[2]);
entry->ipv4_dslite.tunnel_dipv6_3 =
ntohl(ip6h->daddr.s6_addr32[3]);
ppe_fill_flow_lbl(entry, ip6h);
entry->ipv4_dslite.priority = ip6h->priority;
entry->ipv4_dslite.hop_limit = ip6h->hop_limit;
} else {
entry->ipv6_6rd.ipv6_sip0 = foe->ipv6_6rd.ipv6_sip0;
entry->ipv6_6rd.ipv6_sip1 = foe->ipv6_6rd.ipv6_sip1;
entry->ipv6_6rd.ipv6_sip2 = foe->ipv6_6rd.ipv6_sip2;
entry->ipv6_6rd.ipv6_sip3 = foe->ipv6_6rd.ipv6_sip3;
entry->ipv6_6rd.ipv6_dip0 = foe->ipv6_6rd.ipv6_dip0;
entry->ipv6_6rd.ipv6_dip1 = foe->ipv6_6rd.ipv6_dip1;
entry->ipv6_6rd.ipv6_dip2 = foe->ipv6_6rd.ipv6_dip2;
entry->ipv6_6rd.ipv6_dip3 = foe->ipv6_6rd.ipv6_dip3;
}
return 0;
}
int mtk_464xlat_fill_l2(struct foe_entry *entry, struct sk_buff *skb,
const struct net_device *dev, bool l2w)
{
const unsigned int *port_reg;
int port_index;
u16 sp_tag;
if (l2w)
entry->ipv4_dslite.etype = ETH_P_IP;
else {
if (IS_DSA_LAN(dev)) {
port_reg = of_get_property(dev->dev.of_node,
"reg", NULL);
if (unlikely(!port_reg))
return -1;
port_index = be32_to_cpup(port_reg);
sp_tag = BIT(port_index);
entry->bfib1.vlan_layer = 1;
entry->bfib1.vpm = 0;
entry->ipv6_6rd.etype = sp_tag;
} else
entry->ipv6_6rd.etype = ETH_P_IPV6;
}
if (mtk_464xlat_fill_mac(entry, skb, dev, l2w))
return -1;
return 0;
}
int mtk_464xlat_fill_l3(struct foe_entry *entry, struct sk_buff *skb,
struct foe_entry *foe, bool l2w)
{
mtk_464xlat_fill_ipv4(entry, skb, foe, l2w);
if (mtk_464xlat_fill_ipv6(entry, skb, foe, l2w))
return -1;
return 0;
}
int mtk_464xlat_post_process(struct sk_buff *skb, const struct net_device *out)
{
struct foe_entry *foe, entry = {};
u32 hash;
bool l2w;
if (skb->protocol == htons(ETH_P_IPV6))
l2w = true;
else if (skb->protocol == htons(ETH_P_IP))
l2w = false;
else
return -1;
if (mtk_464xlat_get_hash(skb, &hash, l2w))
return -1;
if (hash >= hnat_priv->foe_etry_num)
return -1;
if (headroom[hash].crsn != HIT_UNBIND_RATE_REACH)
return -1;
foe = &hnat_priv->foe_table_cpu[headroom_ppe(headroom[hash])][hash];
mtk_464xlat_fill_info1(&entry, skb, l2w);
if (mtk_464xlat_fill_l3(&entry, skb, foe, l2w))
return -1;
mtk_464xlat_fill_info2(&entry, l2w);
if (mtk_464xlat_fill_l2(&entry, skb, out, l2w))
return -1;
/* We must ensure all info has been updated before set to hw */
wmb();
memcpy(foe, &entry, sizeof(struct foe_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 *,
struct flow_offload_hw_path *),
const char *func)
{
struct foe_entry *entry;
struct flow_offload_hw_path hw_path = { .dev = (struct net_device*)out,
.virt_dev = (struct net_device*)out };
const struct net_device *arp_dev = out;
if (xlat_toggle && !mtk_464xlat_post_process(skb, out))
return 0;
if (skb_hnat_alg(skb) || unlikely(!is_magic_tag_valid(skb) ||
!IS_SPACE_AVAILABLE_HEAD(skb)))
return 0;
if (unlikely(!skb_mac_header_was_set(skb)))
return 0;
if (unlikely(!skb_hnat_is_hashed(skb)))
return 0;
if (out->netdev_ops->ndo_flow_offload_check) {
out->netdev_ops->ndo_flow_offload_check(&hw_path);
out = (IS_GMAC1_MODE) ? hw_path.virt_dev : hw_path.dev;
}
if (!IS_LAN_GRP(out) && !IS_WAN(out) && !IS_EXT(out))
return 0;
trace_printk("[%s] case hit, %x-->%s, reason=%x\n", __func__,
skb_hnat_iface(skb), out->name, skb_hnat_reason(skb));
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return -1;
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
switch (skb_hnat_reason(skb)) {
case HIT_UNBIND_RATE_REACH:
if (entry_hnat_is_bound(entry))
break;
if (fn && !mtk_hnat_accel_type(skb))
break;
if (fn && fn(skb, arp_dev, &hw_path))
break;
skb_to_hnat_info(skb, out, entry, &hw_path);
break;
case HIT_BIND_KEEPALIVE_DUP_OLD_HDR:
/* update hnat count to nf_conntrack by keepalive */
if (hnat_priv->data->per_flow_accounting && hnat_priv->nf_stat_en)
mtk_hnat_nf_update(skb);
if (fn && !mtk_hnat_accel_type(skb))
break;
/* update dscp for qos */
mtk_hnat_dscp_update(skb, entry);
/* update mcast timestamp*/
if (hnat_priv->data->version == MTK_HNAT_V1_3 &&
hnat_priv->data->mcast && entry->bfib1.sta == 1)
entry->ipv4_hnapt.m_timestamp = foe_timestamp(hnat_priv);
if (entry_hnat_is_bound(entry)) {
memset(skb_hnat_info(skb), 0, FOE_INFO_LEN);
return -1;
}
break;
case HIT_BIND_MULTICAST_TO_CPU:
case HIT_BIND_MULTICAST_TO_GMAC_CPU:
/*do not forward to gdma again,if ppe already done it*/
if (IS_LAN_GRP(out) || IS_WAN(out))
return -1;
break;
}
return 0;
}
static unsigned int
mtk_hnat_ipv6_nf_local_out(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct foe_entry *entry;
struct ipv6hdr *ip6h;
struct iphdr _iphdr;
const struct iphdr *iph;
struct tcpudphdr _ports;
const struct tcpudphdr *pptr;
int udp = 0;
if (unlikely(!skb_hnat_is_hashed(skb)))
return NF_ACCEPT;
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return NF_ACCEPT;
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
if (skb_hnat_reason(skb) == HIT_UNBIND_RATE_REACH) {
ip6h = ipv6_hdr(skb);
if (ip6h->nexthdr == NEXTHDR_IPIP) {
/* Map-E LAN->WAN: need to record orig info before fn. */
if (mape_toggle) {
iph = skb_header_pointer(skb, IPV6_HDR_LEN,
sizeof(_iphdr), &_iphdr);
if (unlikely(!iph))
return NF_ACCEPT;
switch (iph->protocol) {
case IPPROTO_UDP:
udp = 1;
case IPPROTO_TCP:
break;
default:
return NF_ACCEPT;
}
pptr = skb_header_pointer(skb, IPV6_HDR_LEN + iph->ihl * 4,
sizeof(_ports), &_ports);
if (unlikely(!pptr))
return NF_ACCEPT;
entry->bfib1.udp = udp;
/* Map-E LAN->WAN record inner IPv4 header info. */
#if defined(CONFIG_MEDIATEK_NETSYS_V2) || defined(CONFIG_MEDIATEK_NETSYS_V3)
entry->bfib1.pkt_type = IPV4_MAP_E;
entry->ipv4_dslite.iblk2.dscp = iph->tos;
entry->ipv4_mape.new_sip = ntohl(iph->saddr);
entry->ipv4_mape.new_dip = ntohl(iph->daddr);
entry->ipv4_mape.new_sport = ntohs(pptr->src);
entry->ipv4_mape.new_dport = ntohs(pptr->dst);
#else
entry->ipv4_hnapt.iblk2.dscp = iph->tos;
entry->ipv4_hnapt.new_sip = ntohl(iph->saddr);
entry->ipv4_hnapt.new_dip = ntohl(iph->daddr);
entry->ipv4_hnapt.new_sport = ntohs(pptr->src);
entry->ipv4_hnapt.new_dport = ntohs(pptr->dst);
#endif
} else {
entry->bfib1.pkt_type = IPV4_DSLITE;
}
}
}
return NF_ACCEPT;
}
static unsigned int
mtk_hnat_ipv6_nf_post_routing(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (!skb)
goto drop;
post_routing_print(skb, state->in, state->out, __func__);
if (!mtk_hnat_nf_post_routing(skb, state->out, hnat_ipv6_get_nexthop,
__func__))
return NF_ACCEPT;
drop:
if (skb)
trace_printk(
"%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, skb_hnat_iface(skb), state->out->name,
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_hnat_ipv4_nf_post_routing(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (!skb)
goto drop;
post_routing_print(skb, state->in, state->out, __func__);
if (!mtk_hnat_nf_post_routing(skb, state->out, hnat_ipv4_get_nexthop,
__func__))
return NF_ACCEPT;
drop:
if (skb)
trace_printk(
"%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, skb_hnat_iface(skb), state->out->name,
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_pong_hqos_handler(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct vlan_ethhdr *veth;
if (!skb)
goto drop;
veth = (struct vlan_ethhdr *)skb_mac_header(skb);
if (IS_HQOS_MODE && eth_hdr(skb)->h_proto == HQOS_MAGIC_TAG) {
skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff;
skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU;
}
if (skb_hnat_iface(skb) == FOE_MAGIC_EXT)
clr_from_extge(skb);
/* packets from external devices -> xxx ,step 2, learning stage */
if (do_ext2ge_fast_learn(state->in, skb) && (!qos_toggle ||
(qos_toggle && eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG))) {
if (!do_hnat_ext_to_ge2(skb, __func__))
return NF_STOLEN;
goto drop;
}
/* packets form ge -> external device */
if (do_ge2ext_fast(state->in, skb)) {
if (!do_hnat_ge_to_ext(skb, __func__))
return NF_STOLEN;
goto drop;
}
return NF_ACCEPT;
drop:
if (skb)
printk_ratelimited(KERN_WARNING
"%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, state->in->name, skb_hnat_iface(skb),
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_hnat_br_nf_local_out(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
if (!skb)
goto drop;
post_routing_print(skb, state->in, state->out, __func__);
if (!mtk_hnat_nf_post_routing(skb, state->out, 0, __func__))
return NF_ACCEPT;
drop:
if (skb)
trace_printk(
"%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x,\n"
"sport=0x%x, reason=0x%x, alg=0x%x)\n",
__func__, skb_hnat_iface(skb), state->out->name,
HNAT_SKB_CB2(skb)->magic, skb_hnat_entry(skb),
skb_hnat_sport(skb), skb_hnat_reason(skb),
skb_hnat_alg(skb));
return NF_DROP;
}
static unsigned int
mtk_hnat_ipv4_nf_local_out(void *priv, struct sk_buff *skb,
const struct nf_hook_state *state)
{
struct sk_buff *new_skb;
struct foe_entry *entry;
struct iphdr *iph;
if (!skb_hnat_is_hashed(skb))
return NF_ACCEPT;
if (skb_hnat_entry(skb) >= hnat_priv->foe_etry_num ||
skb_hnat_ppe(skb) >= CFG_PPE_NUM)
return NF_ACCEPT;
entry = &hnat_priv->foe_table_cpu[skb_hnat_ppe(skb)][skb_hnat_entry(skb)];
if (unlikely(skb_headroom(skb) < FOE_INFO_LEN)) {
new_skb = skb_realloc_headroom(skb, FOE_INFO_LEN);
if (!new_skb) {
dev_info(hnat_priv->dev, "%s:drop\n", __func__);
return NF_DROP;
}
dev_kfree_skb(skb);
skb = new_skb;
}
/* Make the flow from local not be bound. */
iph = ip_hdr(skb);
if (iph->protocol == IPPROTO_IPV6) {
entry->udib1.pkt_type = IPV6_6RD;
hnat_set_head_frags(state, skb, 0, hnat_set_alg);
} else {
hnat_set_head_frags(state, skb, 1, hnat_set_alg);
}
return NF_ACCEPT;
}
static unsigned int mtk_hnat_br_nf_forward(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
if ((hnat_priv->data->version == MTK_HNAT_V1_2) &&
unlikely(IS_EXT(state->in) && IS_EXT(state->out)))
hnat_set_head_frags(state, skb, 1, hnat_set_alg);
return NF_ACCEPT;
}
static struct nf_hook_ops mtk_hnat_nf_ops[] __read_mostly = {
{
.hook = mtk_hnat_ipv4_nf_pre_routing,
.pf = NFPROTO_IPV4,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP_PRI_FIRST + 1,
},
{
.hook = mtk_hnat_ipv6_nf_pre_routing,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP_PRI_FIRST + 1,
},
{
.hook = mtk_hnat_ipv6_nf_post_routing,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_POST_ROUTING,
.priority = NF_IP_PRI_LAST,
},
{
.hook = mtk_hnat_ipv6_nf_local_out,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP_PRI_LAST,
},
{
.hook = mtk_hnat_ipv4_nf_post_routing,
.pf = NFPROTO_IPV4,
.hooknum = NF_INET_POST_ROUTING,
.priority = NF_IP_PRI_LAST,
},
{
.hook = mtk_hnat_ipv4_nf_local_out,
.pf = NFPROTO_IPV4,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP_PRI_LAST,
},
{
.hook = mtk_hnat_br_nf_local_in,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_LOCAL_IN,
.priority = NF_BR_PRI_FIRST,
},
{
.hook = mtk_hnat_br_nf_local_out,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
.priority = NF_BR_PRI_LAST - 1,
},
{
.hook = mtk_pong_hqos_handler,
.pf = NFPROTO_BRIDGE,
.hooknum = NF_BR_PRE_ROUTING,
.priority = NF_BR_PRI_FIRST + 1,
},
};
int hnat_register_nf_hooks(void)
{
return nf_register_net_hooks(&init_net, mtk_hnat_nf_ops, ARRAY_SIZE(mtk_hnat_nf_ops));
}
void hnat_unregister_nf_hooks(void)
{
nf_unregister_net_hooks(&init_net, mtk_hnat_nf_ops, ARRAY_SIZE(mtk_hnat_nf_ops));
}
int whnat_adjust_nf_hooks(void)
{
struct nf_hook_ops *hook = mtk_hnat_nf_ops;
unsigned int n = ARRAY_SIZE(mtk_hnat_nf_ops);
while (n-- > 0) {
if (hook[n].hook == mtk_hnat_br_nf_local_in) {
hook[n].hooknum = NF_BR_PRE_ROUTING;
hook[n].priority = NF_BR_PRI_FIRST + 1;
} else if (hook[n].hook == mtk_hnat_br_nf_local_out) {
hook[n].hooknum = NF_BR_POST_ROUTING;
} else if (hook[n].hook == mtk_pong_hqos_handler) {
hook[n].hook = mtk_hnat_br_nf_forward;
hook[n].hooknum = NF_BR_FORWARD;
hook[n].priority = NF_BR_PRI_LAST - 1;
}
}
return 0;
}
int mtk_hqos_ptype_cb(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *unused)
{
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
skb_hnat_entry(skb) = ntohs(veth->h_vlan_TCI) & 0x3fff;
skb_hnat_reason(skb) = HIT_BIND_FORCE_TO_CPU;
if (do_hnat_ge_to_ext(skb, __func__) == -1)
return 1;
return 0;
}