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Diffstat (limited to 'net/ipx/ipx_route.c')
-rw-r--r--net/ipx/ipx_route.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/net/ipx/ipx_route.c b/net/ipx/ipx_route.c
deleted file mode 100644
index 3cf93aa9f284..000000000000
--- a/net/ipx/ipx_route.c
+++ /dev/null
@@ -1,293 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Implements the IPX routing routines.
- * Code moved from af_ipx.c.
- *
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2003
- *
- * See net/ipx/ChangeLog.
- */
-
-#include <linux/list.h>
-#include <linux/route.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-
-#include <net/ipx.h>
-#include <net/sock.h>
-
-LIST_HEAD(ipx_routes);
-DEFINE_RWLOCK(ipx_routes_lock);
-
-extern struct ipx_interface *ipx_internal_net;
-
-extern struct ipx_interface *ipxitf_find_using_net(__be32 net);
-extern int ipxitf_demux_socket(struct ipx_interface *intrfc,
- struct sk_buff *skb, int copy);
-extern int ipxitf_demux_socket(struct ipx_interface *intrfc,
- struct sk_buff *skb, int copy);
-
-struct ipx_route *ipxrtr_lookup(__be32 net)
-{
- struct ipx_route *r;
-
- read_lock_bh(&ipx_routes_lock);
- list_for_each_entry(r, &ipx_routes, node)
- if (r->ir_net == net) {
- ipxrtr_hold(r);
- goto unlock;
- }
- r = NULL;
-unlock:
- read_unlock_bh(&ipx_routes_lock);
- return r;
-}
-
-/*
- * Caller must hold a reference to intrfc
- */
-int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
- unsigned char *node)
-{
- struct ipx_route *rt;
- int rc;
-
- /* Get a route structure; either existing or create */
- rt = ipxrtr_lookup(network);
- if (!rt) {
- rt = kmalloc(sizeof(*rt), GFP_ATOMIC);
- rc = -EAGAIN;
- if (!rt)
- goto out;
-
- refcount_set(&rt->refcnt, 1);
- ipxrtr_hold(rt);
- write_lock_bh(&ipx_routes_lock);
- list_add(&rt->node, &ipx_routes);
- write_unlock_bh(&ipx_routes_lock);
- } else {
- rc = -EEXIST;
- if (intrfc == ipx_internal_net)
- goto out_put;
- }
-
- rt->ir_net = network;
- rt->ir_intrfc = intrfc;
- if (!node) {
- memset(rt->ir_router_node, '\0', IPX_NODE_LEN);
- rt->ir_routed = 0;
- } else {
- memcpy(rt->ir_router_node, node, IPX_NODE_LEN);
- rt->ir_routed = 1;
- }
-
- rc = 0;
-out_put:
- ipxrtr_put(rt);
-out:
- return rc;
-}
-
-void ipxrtr_del_routes(struct ipx_interface *intrfc)
-{
- struct ipx_route *r, *tmp;
-
- write_lock_bh(&ipx_routes_lock);
- list_for_each_entry_safe(r, tmp, &ipx_routes, node)
- if (r->ir_intrfc == intrfc) {
- list_del(&r->node);
- ipxrtr_put(r);
- }
- write_unlock_bh(&ipx_routes_lock);
-}
-
-static int ipxrtr_create(struct ipx_route_definition *rd)
-{
- struct ipx_interface *intrfc;
- int rc = -ENETUNREACH;
-
- /* Find the appropriate interface */
- intrfc = ipxitf_find_using_net(rd->ipx_router_network);
- if (!intrfc)
- goto out;
- rc = ipxrtr_add_route(rd->ipx_network, intrfc, rd->ipx_router_node);
- ipxitf_put(intrfc);
-out:
- return rc;
-}
-
-static int ipxrtr_delete(__be32 net)
-{
- struct ipx_route *r, *tmp;
- int rc;
-
- write_lock_bh(&ipx_routes_lock);
- list_for_each_entry_safe(r, tmp, &ipx_routes, node)
- if (r->ir_net == net) {
- /* Directly connected; can't lose route */
- rc = -EPERM;
- if (!r->ir_routed)
- goto out;
- list_del(&r->node);
- ipxrtr_put(r);
- rc = 0;
- goto out;
- }
- rc = -ENOENT;
-out:
- write_unlock_bh(&ipx_routes_lock);
- return rc;
-}
-
-/*
- * The skb has to be unshared, we'll end up calling ipxitf_send, that'll
- * modify the packet
- */
-int ipxrtr_route_skb(struct sk_buff *skb)
-{
- struct ipxhdr *ipx = ipx_hdr(skb);
- struct ipx_route *r = ipxrtr_lookup(IPX_SKB_CB(skb)->ipx_dest_net);
-
- if (!r) { /* no known route */
- kfree_skb(skb);
- return 0;
- }
-
- ipxitf_hold(r->ir_intrfc);
- ipxitf_send(r->ir_intrfc, skb, r->ir_routed ?
- r->ir_router_node : ipx->ipx_dest.node);
- ipxitf_put(r->ir_intrfc);
- ipxrtr_put(r);
-
- return 0;
-}
-
-/*
- * Route an outgoing frame from a socket.
- */
-int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
- struct msghdr *msg, size_t len, int noblock)
-{
- struct sk_buff *skb;
- struct ipx_sock *ipxs = ipx_sk(sk);
- struct ipx_interface *intrfc;
- struct ipxhdr *ipx;
- size_t size;
- int ipx_offset;
- struct ipx_route *rt = NULL;
- int rc;
-
- /* Find the appropriate interface on which to send packet */
- if (!usipx->sipx_network && ipx_primary_net) {
- usipx->sipx_network = ipx_primary_net->if_netnum;
- intrfc = ipx_primary_net;
- } else {
- rt = ipxrtr_lookup(usipx->sipx_network);
- rc = -ENETUNREACH;
- if (!rt)
- goto out;
- intrfc = rt->ir_intrfc;
- }
-
- ipxitf_hold(intrfc);
- ipx_offset = intrfc->if_ipx_offset;
- size = sizeof(struct ipxhdr) + len + ipx_offset;
-
- skb = sock_alloc_send_skb(sk, size, noblock, &rc);
- if (!skb)
- goto out_put;
-
- skb_reserve(skb, ipx_offset);
- skb->sk = sk;
-
- /* Fill in IPX header */
- skb_reset_network_header(skb);
- skb_reset_transport_header(skb);
- skb_put(skb, sizeof(struct ipxhdr));
- ipx = ipx_hdr(skb);
- ipx->ipx_pktsize = htons(len + sizeof(struct ipxhdr));
- IPX_SKB_CB(skb)->ipx_tctrl = 0;
- ipx->ipx_type = usipx->sipx_type;
-
- IPX_SKB_CB(skb)->last_hop.index = -1;
-#ifdef CONFIG_IPX_INTERN
- IPX_SKB_CB(skb)->ipx_source_net = ipxs->intrfc->if_netnum;
- memcpy(ipx->ipx_source.node, ipxs->node, IPX_NODE_LEN);
-#else
- rc = ntohs(ipxs->port);
- if (rc == 0x453 || rc == 0x452) {
- /* RIP/SAP special handling for mars_nwe */
- IPX_SKB_CB(skb)->ipx_source_net = intrfc->if_netnum;
- memcpy(ipx->ipx_source.node, intrfc->if_node, IPX_NODE_LEN);
- } else {
- IPX_SKB_CB(skb)->ipx_source_net = ipxs->intrfc->if_netnum;
- memcpy(ipx->ipx_source.node, ipxs->intrfc->if_node,
- IPX_NODE_LEN);
- }
-#endif /* CONFIG_IPX_INTERN */
- ipx->ipx_source.sock = ipxs->port;
- IPX_SKB_CB(skb)->ipx_dest_net = usipx->sipx_network;
- memcpy(ipx->ipx_dest.node, usipx->sipx_node, IPX_NODE_LEN);
- ipx->ipx_dest.sock = usipx->sipx_port;
-
- rc = memcpy_from_msg(skb_put(skb, len), msg, len);
- if (rc) {
- kfree_skb(skb);
- goto out_put;
- }
-
- /* Apply checksum. Not allowed on 802.3 links. */
- if (sk->sk_no_check_tx ||
- intrfc->if_dlink_type == htons(IPX_FRAME_8023))
- ipx->ipx_checksum = htons(0xFFFF);
- else
- ipx->ipx_checksum = ipx_cksum(ipx, len + sizeof(struct ipxhdr));
-
- rc = ipxitf_send(intrfc, skb, (rt && rt->ir_routed) ?
- rt->ir_router_node : ipx->ipx_dest.node);
-out_put:
- ipxitf_put(intrfc);
- if (rt)
- ipxrtr_put(rt);
-out:
- return rc;
-}
-
-/*
- * We use a normal struct rtentry for route handling
- */
-int ipxrtr_ioctl(unsigned int cmd, void __user *arg)
-{
- struct rtentry rt; /* Use these to behave like 'other' stacks */
- struct sockaddr_ipx *sg, *st;
- int rc = -EFAULT;
-
- if (copy_from_user(&rt, arg, sizeof(rt)))
- goto out;
-
- sg = (struct sockaddr_ipx *)&rt.rt_gateway;
- st = (struct sockaddr_ipx *)&rt.rt_dst;
-
- rc = -EINVAL;
- if (!(rt.rt_flags & RTF_GATEWAY) || /* Direct routes are fixed */
- sg->sipx_family != AF_IPX ||
- st->sipx_family != AF_IPX)
- goto out;
-
- switch (cmd) {
- case SIOCDELRT:
- rc = ipxrtr_delete(st->sipx_network);
- break;
- case SIOCADDRT: {
- struct ipx_route_definition f;
- f.ipx_network = st->sipx_network;
- f.ipx_router_network = sg->sipx_network;
- memcpy(f.ipx_router_node, sg->sipx_node, IPX_NODE_LEN);
- rc = ipxrtr_create(&f);
- break;
- }
- }
-
-out:
- return rc;
-}
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