| /* 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 "nf_hnat_mtk.h" |
| #include "hnat.h" |
| |
| #include "../mtk_eth_soc.h" |
| |
| #define do_ge2ext_fast(dev, skb) \ |
| ((IS_LAN(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(); |
| |
| 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(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(0, 1); |
| else if (IS_WAN(dev)) |
| set_gmac_ppe_fwd(1, 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 (IS_PPD(dev) && hnat_priv->g_ppdev) { |
| hnat_priv->g_ppdev = NULL; |
| dev_put(dev); |
| } |
| if (IS_WAN(dev) && hnat_priv->g_wandev) { |
| 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; |
| 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++) { |
| 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); |
| |
| 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_V4) && |
| (skb_hnat_entry(skb) != 0x7fff)) || |
| ((hnat_priv->data->version != MTK_HNAT_V4) && |
| (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; |
| |
| 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; |
| |
| skb->dev = get_dev_from_index(index); |
| |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (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); |
| } |
| #endif |
| |
| 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_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; |
| } |
| } |
| |
| 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); |
| 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; |
| } |
| |
| 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_multicast_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 ((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 (!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; |
| if (!skb) |
| goto drop; |
| 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; |
| } |
| |
| /* 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); |
| |
| return NF_ACCEPT; |
| drop: |
| printk_ratelimited(KERN_WARNING |
| "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, 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 (!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; |
| if (!skb) |
| goto drop; |
| 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; |
| } |
| |
| return NF_ACCEPT; |
| drop: |
| printk_ratelimited(KERN_WARNING |
| "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, 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) |
| { |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| struct vlan_ethhdr *veth; |
| |
| if (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; |
| } |
| } |
| #endif |
| |
| 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; |
| if (!skb) |
| goto drop; |
| 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 defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (do_ext2ge_fast_learn(state->in, skb) && (eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG)) { |
| #else |
| if (do_ext2ge_fast_learn(state->in, skb)) { |
| #endif |
| 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; |
| } |
| } |
| |
| /* 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; |
| } |
| |
| return NF_ACCEPT; |
| drop: |
| printk_ratelimited(KERN_WARNING |
| "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, 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 (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 *)ð->h_dest[4])); |
| entry.ipv4_hnapt.smac_hi = swab32(*((u32 *)eth->h_source)); |
| entry.ipv4_hnapt.smac_lo = swab16(*((u16 *)ð->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: |
| entry.ipv6_5t_route.dmac_hi = swab32(*((u32 *)eth->h_dest)); |
| entry.ipv6_5t_route.dmac_lo = swab16(*((u16 *)ð->h_dest[4])); |
| entry.ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source)); |
| entry.ipv6_5t_route.smac_lo = |
| swab16(*((u16 *)ð->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.ttl = 1; |
| entry.bfib1.cah = 1; |
| entry.bfib1.ka = 1; |
| entry.bfib1.time_stamp = (hnat_priv->data->version == MTK_HNAT_V4) ? |
| readl(hnat_priv->fe_base + 0x0010) & (0xFF) : |
| readl(hnat_priv->fe_base + 0x0010) & (0x7FFF); |
| |
| switch (entry.bfib1.pkt_type) { |
| case IPV4_HNAPT: |
| case IPV4_HNAT: |
| if (hnat_priv->data->mcast && |
| is_multicast_ether_addr(ð->h_dest[0])) { |
| entry.ipv4_hnapt.iblk2.mcast = 1; |
| if (hnat_priv->data->version == MTK_HNAT_V3) { |
| 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_V4) ? 0x3f : 0xf; |
| break; |
| case IPV4_DSLITE: |
| case IPV4_MAP_E: |
| case IPV6_6RD: |
| case IPV6_5T_ROUTE: |
| case IPV6_3T_ROUTE: |
| if (hnat_priv->data->mcast && |
| is_multicast_ether_addr(ð->h_dest[0])) { |
| entry.ipv6_5t_route.iblk2.mcast = 1; |
| if (hnat_priv->data->version == MTK_HNAT_V3) { |
| 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_V4) ? 0x3f : 0xf; |
| break; |
| } |
| return entry; |
| } |
| |
| 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]; |
| } |
| |
| 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; |
| u32 gmac = NR_DISCARD; |
| int udp = 0; |
| u32 qid = 0; |
| int mape = 0; |
| |
| 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*/ |
| #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
| 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) |
| if (entry.bfib1.pkt_type == IPV4_MAP_E) { |
| pptr = skb_header_pointer(skb, |
| iph->ihl * 4, |
| sizeof(_ports), |
| &_ports); |
| |
| entry.ipv4_dslite.new_sip = |
| ntohl(iph->saddr); |
| entry.ipv4_dslite.new_dip = |
| ntohl(iph->daddr); |
| entry.ipv4_dslite.new_sport = |
| ntohs(pptr->src); |
| entry.ipv4_dslite.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_tci && FROM_GE_WAN(skb) && IS_LAN(dev)) { |
| entry.bfib1.vlan_layer += 1; |
| |
| if (entry.ipv4_hnapt.vlan1) |
| entry.ipv4_hnapt.vlan2 = (skb->vlan_tci & VLAN_VID_MASK); |
| else |
| entry.ipv4_hnapt.vlan1 = (skb->vlan_tci & VLAN_VID_MASK); |
| } |
| |
| 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); |
| 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_tci && FROM_GE_WAN(skb) && IS_LAN(dev)) { |
| entry.bfib1.vlan_layer += 1; |
| |
| if (entry.ipv6_5t_route.vlan1) |
| entry.ipv6_5t_route.vlan2 = (skb->vlan_tci & VLAN_VID_MASK); |
| else |
| entry.ipv6_5t_route.vlan1 = (skb->vlan_tci & VLAN_VID_MASK); |
| } |
| |
| 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; |
| } |
| 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; |
| } 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 defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| entry.ipv4_hnapt.iblk2.qid = |
| (hnat_priv->data->version == MTK_HNAT_V4) ? |
| skb->mark & 0x7f : skb->mark & 0xf; |
| 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: |
| ip6h = ipv6_hdr(skb); |
| 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)) |
| 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_WAN(dev)) { |
| if (IS_DSA_WAN(dev)) |
| 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(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; |
| } |
| |
| qid = skb->mark & (MTK_QDMA_TX_MASK); |
| |
| if (IS_IPV4_GRP(foe)) { |
| entry.ipv4_hnapt.iblk2.dp = gmac; |
| entry.ipv4_hnapt.iblk2.port_mg = |
| (hnat_priv->data->version == MTK_HNAT_V1) ? 0x3f : 0; |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (hnat_priv->data->version == MTK_HNAT_V4) { |
| 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) |
| entry.ipv4_hnapt.iblk2.port_mg |= |
| ((qid >> 4) & 0x3); |
| |
| if (((IS_EXT(dev) && (FROM_GE_LAN(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) |
| entry.ipv4_hnapt.iblk2.fqos = 0; |
| else |
| entry.ipv4_hnapt.iblk2.fqos = 1; |
| #else |
| entry.ipv4_hnapt.iblk2.fqos = 0; |
| #endif |
| } else { |
| entry.ipv6_5t_route.iblk2.dp = gmac; |
| entry.ipv6_5t_route.iblk2.port_mg = |
| (hnat_priv->data->version == MTK_HNAT_V1) ? 0x3f : 0; |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (hnat_priv->data->version == MTK_HNAT_V4) { |
| 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) |
| entry.ipv6_5t_route.iblk2.port_mg |= |
| ((qid >> 4) & 0x3); |
| |
| if (IS_EXT(dev) && (FROM_GE_LAN(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)) |
| entry.ipv6_5t_route.iblk2.fqos = 0; |
| else |
| entry.ipv6_5t_route.iblk2.fqos = 1; |
| #else |
| entry.ipv6_5t_route.iblk2.fqos = 0; |
| #endif |
| } |
| |
| /* 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.state = BIND; |
| |
| memcpy(foe, &entry, sizeof(entry)); |
| /*reset statistic for this entry*/ |
| if (hnat_priv->data->per_flow_accounting) |
| memset(&hnat_priv->acct[skb_hnat_ppe(skb)][skb_hnat_entry(skb)], |
| 0, sizeof(struct mib_entry)); |
| |
| wmb(); |
| |
| return 0; |
| } |
| |
| int mtk_sw_nat_hook_tx(struct sk_buff *skb, int gmac_no) |
| { |
| struct foe_entry *entry; |
| struct ethhdr *eth; |
| |
| if (skb_hnat_alg(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 (!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); |
| |
| /*not bind multicast if PPE mcast not enable*/ |
| if (!hnat_priv->data->mcast && is_multicast_ether_addr(eth->h_dest)) |
| return NF_ACCEPT; |
| |
| /* Some mt_wifi virtual interfaces, such as apcli, |
| * will change the smac for specail purpose. |
| */ |
| switch (entry->bfib1.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 *)ð->h_source[4])); |
| break; |
| case IPV4_DSLITE: |
| case IPV4_MAP_E: |
| case IPV6_6RD: |
| case IPV6_5T_ROUTE: |
| case IPV6_3T_ROUTE: |
| entry->ipv6_5t_route.smac_hi = swab32(*((u32 *)eth->h_source)); |
| entry->ipv6_5t_route.smac_lo = swab16(*((u16 *)ð->h_source[4])); |
| break; |
| } |
| |
| entry->bfib1.vpm = 0; |
| entry->bfib1.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_V2 && |
| gmac_no == NR_WHNAT_WDMA_PORT) || |
| (hnat_priv->data->version == MTK_HNAT_V4 && |
| (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_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)) { |
| 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; |
| } |
| |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (FROM_GE_LAN(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) { |
| entry->bfib1.vpm = 0; |
| entry->bfib1.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; |
| } |
| #endif |
| } |
| entry->ipv4_hnapt.iblk2.dp = gmac_no; |
| } else { |
| entry->ipv6_5t_route.iblk2.fqos = 0; |
| if ((hnat_priv->data->version == MTK_HNAT_V2 && |
| gmac_no == NR_WHNAT_WDMA_PORT) || |
| (hnat_priv->data->version == MTK_HNAT_V4 && |
| (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_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)) { |
| entry->bfib1.vpm = 1; |
| entry->bfib1.vlan_layer = 1; |
| |
| if (FROM_GE_LAN(skb)) |
| entry->ipv6_5t_route.vlan1 = 1; |
| else if (FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) |
| entry->ipv6_5t_route.vlan1 = 2; |
| } |
| |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (FROM_GE_LAN(skb) || FROM_GE_WAN(skb) || FROM_GE_VIRTUAL(skb)) { |
| entry->bfib1.vpm = 0; |
| entry->bfib1.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; |
| } |
| #endif |
| } |
| entry->ipv6_5t_route.iblk2.dp = gmac_no; |
| } |
| |
| entry->bfib1.state = BIND; |
| |
| 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_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; |
| } |
| 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); |
| 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 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 (skb_hnat_alg(skb) || unlikely(!is_magic_tag_valid(skb) || |
| !IS_SPACE_AVAILABLE_HEAD(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(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)); |
| |
| 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: |
| if (fn && !mtk_hnat_accel_type(skb)) |
| break; |
| |
| /* update mcast timestamp*/ |
| if (hnat_priv->data->version == MTK_HNAT_V3 && |
| 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(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; |
| |
| 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); |
| 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); |
| entry->bfib1.udp = udp; |
| |
| #if defined(CONFIG_MEDIATEK_NETSYS_V2) |
| entry->bfib1.pkt_type = IPV4_MAP_E; |
| entry->ipv4_dslite.iblk2.dscp = iph->tos; |
| entry->ipv4_dslite.new_sip = ntohl(iph->saddr); |
| entry->ipv4_dslite.new_dip = ntohl(iph->daddr); |
| entry->ipv4_dslite.new_sport = ntohs(pptr->src); |
| entry->ipv4_dslite.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) |
| { |
| 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; |
| |
| trace_printk( |
| "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, 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) |
| { |
| 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; |
| |
| trace_printk( |
| "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, 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) |
| { |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| struct vlan_ethhdr *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; |
| } |
| #endif |
| |
| if (skb_hnat_iface(skb) == FOE_MAGIC_EXT) |
| clr_from_extge(skb); |
| |
| /* packets from external devices -> xxx ,step 2, learning stage */ |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| if (do_ext2ge_fast_learn(state->in, skb) && (eth_hdr(skb)->h_proto != HQOS_MAGIC_TAG)) { |
| #else |
| if (do_ext2ge_fast_learn(state->in, skb)) { |
| #endif |
| 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: |
| printk_ratelimited(KERN_WARNING |
| "%s:drop (in_dev=%s, iif=0x%x, CB2=0x%x, ppe_hash=0x%x, 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) |
| { |
| post_routing_print(skb, state->in, state->out, __func__); |
| |
| if (!mtk_hnat_nf_post_routing(skb, state->out, 0, __func__)) |
| return NF_ACCEPT; |
| |
| trace_printk( |
| "%s:drop (iif=0x%x, out_dev=%s, CB2=0x%x, ppe_hash=0x%x, 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; |
| |
| 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_V2) && |
| 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); |
| |
| if (!hook) |
| return -1; |
| |
| 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; |
| } |
| |
| #if defined(CONFIG_NET_MEDIATEK_HW_QOS) |
| 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; |
| |
| do_hnat_ge_to_ext(skb, __func__); |
| |
| return 0; |
| } |
| #endif |
| |