#include "../include/linux/if_arp.h"
#include "../include/net/ip.h"
-#include "../include/net/ipx.h"
#include "../include/linux/atalk.h"
#include "../include/linux/udp.h"
#include "../include/linux/if_pppox.h"
memcpy(networkAddr+7, (unsigned char *)ipAddr, 4);
}
-static void __nat25_generate_ipx_network_addr_with_node(unsigned char *networkAddr,
- __be32 *ipxNetAddr, unsigned char *ipxNodeAddr)
-{
- memset(networkAddr, 0, MAX_NETWORK_ADDR_LEN);
-
- networkAddr[0] = NAT25_IPX;
- memcpy(networkAddr+1, ipxNetAddr, 4);
- memcpy(networkAddr+5, ipxNodeAddr, 6);
-}
-
-static void __nat25_generate_ipx_network_addr_with_socket(unsigned char *networkAddr,
- __be32 *ipxNetAddr, __be16 *ipxSocketAddr)
-{
- memset(networkAddr, 0, MAX_NETWORK_ADDR_LEN);
-
- networkAddr[0] = NAT25_IPX;
- memcpy(networkAddr+1, ipxNetAddr, 4);
- memcpy(networkAddr+5, ipxSocketAddr, 2);
-}
-
-static void __nat25_generate_apple_network_addr(unsigned char *networkAddr,
- __be16 *network, unsigned char *node)
-{
- memset(networkAddr, 0, MAX_NETWORK_ADDR_LEN);
-
- networkAddr[0] = NAT25_APPLE;
- memcpy(networkAddr+1, network, 2);
- networkAddr[3] = *node;
-}
-
static void __nat25_generate_pppoe_network_addr(unsigned char *networkAddr,
unsigned char *ac_mac, __be16 *sid)
{
default:
return -1;
}
- } else if ((protocol == ETH_P_IPX) ||
- (protocol <= ETH_FRAME_LEN)) {
- /*---------------------------------------------------*/
- /* Handle IPX and Apple Talk frame */
- /*---------------------------------------------------*/
- unsigned char ipx_header[2] = {0xFF, 0xFF};
- struct ipxhdr *ipx = NULL;
- struct elapaarp *ea = NULL;
- struct ddpehdr *ddp = NULL;
- unsigned char *framePtr = skb->data + ETH_HLEN;
-
- if (protocol == ETH_P_IPX) {
- DEBUG_INFO("NAT25: Protocol = IPX (Ethernet II)\n");
- ipx = (struct ipxhdr *)framePtr;
- } else if (protocol <= ETH_FRAME_LEN) {
- if (!memcmp(ipx_header, framePtr, 2)) {
- DEBUG_INFO("NAT25: Protocol = IPX (Ethernet 802.3)\n");
- ipx = (struct ipxhdr *)framePtr;
- } else {
- unsigned char ipx_8022_type = 0xE0;
- unsigned char snap_8022_type = 0xAA;
-
- if (*framePtr == snap_8022_type) {
- unsigned char ipx_snap_id[5] = {0x0, 0x0, 0x0, 0x81, 0x37}; /* IPX SNAP ID */
- unsigned char aarp_snap_id[5] = {0x00, 0x00, 0x00, 0x80, 0xF3}; /* Apple Talk AARP SNAP ID */
- unsigned char ddp_snap_id[5] = {0x08, 0x00, 0x07, 0x80, 0x9B}; /* Apple Talk DDP SNAP ID */
-
- framePtr += 3; /* eliminate the 802.2 header */
-
- if (!memcmp(ipx_snap_id, framePtr, 5)) {
- framePtr += 5; /* eliminate the SNAP header */
-
- DEBUG_INFO("NAT25: Protocol = IPX (Ethernet SNAP)\n");
- ipx = (struct ipxhdr *)framePtr;
- } else if (!memcmp(aarp_snap_id, framePtr, 5)) {
- framePtr += 5; /* eliminate the SNAP header */
-
- ea = (struct elapaarp *)framePtr;
- } else if (!memcmp(ddp_snap_id, framePtr, 5)) {
- framePtr += 5; /* eliminate the SNAP header */
-
- ddp = (struct ddpehdr *)framePtr;
- } else {
- DEBUG_WARN("NAT25: Protocol = Ethernet SNAP %02x%02x%02x%02x%02x\n", framePtr[0],
- framePtr[1], framePtr[2], framePtr[3], framePtr[4]);
- return -1;
- }
- } else if (*framePtr == ipx_8022_type) {
- framePtr += 3; /* eliminate the 802.2 header */
-
- if (!memcmp(ipx_header, framePtr, 2)) {
- DEBUG_INFO("NAT25: Protocol = IPX (Ethernet 802.2)\n");
- ipx = (struct ipxhdr *)framePtr;
- } else {
- return -1;
- }
- } else {
- return -1;
- }
- }
- } else {
- return -1;
- }
-
- /* IPX */
- if (ipx) {
- switch (method) {
- case NAT25_CHECK:
- if (!memcmp(skb->data+ETH_ALEN, ipx->ipx_source.node, ETH_ALEN))
- DEBUG_INFO("NAT25: Check IPX skb_copy\n");
- return 0;
- case NAT25_INSERT:
- DEBUG_INFO("NAT25: Insert IPX, Dest =%08x,%02x%02x%02x%02x%02x%02x,%04x Source =%08x,%02x%02x%02x%02x%02x%02x,%04x\n",
- ipx->ipx_dest.net,
- ipx->ipx_dest.node[0],
- ipx->ipx_dest.node[1],
- ipx->ipx_dest.node[2],
- ipx->ipx_dest.node[3],
- ipx->ipx_dest.node[4],
- ipx->ipx_dest.node[5],
- ipx->ipx_dest.sock,
- ipx->ipx_source.net,
- ipx->ipx_source.node[0],
- ipx->ipx_source.node[1],
- ipx->ipx_source.node[2],
- ipx->ipx_source.node[3],
- ipx->ipx_source.node[4],
- ipx->ipx_source.node[5],
- ipx->ipx_source.sock);
-
- if (!memcmp(skb->data+ETH_ALEN, ipx->ipx_source.node, ETH_ALEN)) {
- DEBUG_INFO("NAT25: Use IPX Net, and Socket as network addr\n");
-
- __nat25_generate_ipx_network_addr_with_socket(networkAddr, &ipx->ipx_source.net, &ipx->ipx_source.sock);
-
- /* change IPX source node addr to wlan STA address */
- memcpy(ipx->ipx_source.node, GET_MY_HWADDR(priv), ETH_ALEN);
- } else {
- __nat25_generate_ipx_network_addr_with_node(networkAddr, &ipx->ipx_source.net, ipx->ipx_source.node);
- }
- __nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
- __nat25_db_print(priv);
- return 0;
- case NAT25_LOOKUP:
- if (!memcmp(GET_MY_HWADDR(priv), ipx->ipx_dest.node, ETH_ALEN)) {
- DEBUG_INFO("NAT25: Lookup IPX, Modify Destination IPX Node addr\n");
-
- __nat25_generate_ipx_network_addr_with_socket(networkAddr, &ipx->ipx_dest.net, &ipx->ipx_dest.sock);
-
- __nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-
- /* replace IPX destination node addr with Lookup destination MAC addr */
- memcpy(ipx->ipx_dest.node, skb->data, ETH_ALEN);
- } else {
- __nat25_generate_ipx_network_addr_with_node(networkAddr, &ipx->ipx_dest.net, ipx->ipx_dest.node);
-
- __nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
- }
- return 0;
- default:
- return -1;
- }
- } else if (ea) {
- /* Sanity check fields. */
- if (ea->hw_len != ETH_ALEN || ea->pa_len != AARP_PA_ALEN) {
- DEBUG_WARN("NAT25: Appletalk AARP Sanity check fail!\n");
- return -1;
- }
-
- switch (method) {
- case NAT25_CHECK:
- return 0;
- case NAT25_INSERT:
- /* change to AARP source mac address to wlan STA address */
- memcpy(ea->hw_src, GET_MY_HWADDR(priv), ETH_ALEN);
-
- DEBUG_INFO("NAT25: Insert AARP, Source =%d,%d Destination =%d,%d\n",
- ea->pa_src_net,
- ea->pa_src_node,
- ea->pa_dst_net,
- ea->pa_dst_node);
-
- __nat25_generate_apple_network_addr(networkAddr, &ea->pa_src_net, &ea->pa_src_node);
-
- __nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
- __nat25_db_print(priv);
- return 0;
- case NAT25_LOOKUP:
- DEBUG_INFO("NAT25: Lookup AARP, Source =%d,%d Destination =%d,%d\n",
- ea->pa_src_net,
- ea->pa_src_node,
- ea->pa_dst_net,
- ea->pa_dst_node);
-
- __nat25_generate_apple_network_addr(networkAddr, &ea->pa_dst_net, &ea->pa_dst_node);
-
- __nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
-
- /* change to AARP destination mac address to Lookup result */
- memcpy(ea->hw_dst, skb->data, ETH_ALEN);
- return 0;
- default:
- return -1;
- }
- } else if (ddp) {
- switch (method) {
- case NAT25_CHECK:
- return -1;
- case NAT25_INSERT:
- DEBUG_INFO("NAT25: Insert DDP, Source =%d,%d Destination =%d,%d\n",
- ddp->deh_snet,
- ddp->deh_snode,
- ddp->deh_dnet,
- ddp->deh_dnode);
-
- __nat25_generate_apple_network_addr(networkAddr, &ddp->deh_snet, &ddp->deh_snode);
-
- __nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr);
-
- __nat25_db_print(priv);
- return 0;
- case NAT25_LOOKUP:
- DEBUG_INFO("NAT25: Lookup DDP, Source =%d,%d Destination =%d,%d\n",
- ddp->deh_snet,
- ddp->deh_snode,
- ddp->deh_dnet,
- ddp->deh_dnode);
- __nat25_generate_apple_network_addr(networkAddr, &ddp->deh_dnet, &ddp->deh_dnode);
- __nat25_db_network_lookup_and_replace(priv, skb, networkAddr);
- return 0;
- default:
- return -1;
- }
- }
-
- return -1;
} else if ((protocol == ETH_P_PPP_DISC) ||
(protocol == ETH_P_PPP_SES)) {
/*---------------------------------------------------*/
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