staging: r8188eu: remove ipx support from driver

The ipx.h header files are being removed from the kernel, and support
for them was long removed from the tree, so remove all references to it
in the r8188eu driver as well, to allow it to continue to build properly
in linux-next
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210816073450.668993-2-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_br_ext.c

@@ -5,7 +5,6 @@
 
 #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"
@@ -133,36 +132,6 @@ static void __nat25_generate_ipv4_network_addr(unsigned char *networkAddr,
 	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)
 {
@@ -584,203 +553,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method)
 		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)) {
 		/*---------------------------------------------------*/