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Diffstat (limited to 'net/ipv4/xfrm4_mode_transport.c')
-rw-r--r--net/ipv4/xfrm4_mode_transport.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/net/ipv4/xfrm4_mode_transport.c b/net/ipv4/xfrm4_mode_transport.c
deleted file mode 100644
index 1ad2c2c4e250..000000000000
--- a/net/ipv4/xfrm4_mode_transport.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * xfrm4_mode_transport.c - Transport mode encapsulation for IPv4.
- *
- * Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/skbuff.h>
-#include <linux/stringify.h>
-#include <net/dst.h>
-#include <net/ip.h>
-#include <net/xfrm.h>
-#include <net/protocol.h>
-
-/* Add encapsulation header.
- *
- * The IP header will be moved forward to make space for the encapsulation
- * header.
- */
-static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
-{
- struct iphdr *iph = ip_hdr(skb);
- int ihl = iph->ihl * 4;
-
- skb_set_inner_transport_header(skb, skb_transport_offset(skb));
-
- skb_set_network_header(skb, -x->props.header_len);
- skb->mac_header = skb->network_header +
- offsetof(struct iphdr, protocol);
- skb->transport_header = skb->network_header + ihl;
- __skb_pull(skb, ihl);
- memmove(skb_network_header(skb), iph, ihl);
- return 0;
-}
-
-/* Remove encapsulation header.
- *
- * The IP header will be moved over the top of the encapsulation header.
- *
- * On entry, skb->h shall point to where the IP header should be and skb->nh
- * shall be set to where the IP header currently is. skb->data shall point
- * to the start of the payload.
- */
-static int xfrm4_transport_input(struct xfrm_state *x, struct sk_buff *skb)
-{
- int ihl = skb->data - skb_transport_header(skb);
-
- if (skb->transport_header != skb->network_header) {
- memmove(skb_transport_header(skb),
- skb_network_header(skb), ihl);
- skb->network_header = skb->transport_header;
- }
- ip_hdr(skb)->tot_len = htons(skb->len + ihl);
- skb_reset_transport_header(skb);
- return 0;
-}
-
-static struct sk_buff *xfrm4_transport_gso_segment(struct xfrm_state *x,
- struct sk_buff *skb,
- netdev_features_t features)
-{
- const struct net_offload *ops;
- struct sk_buff *segs = ERR_PTR(-EINVAL);
- struct xfrm_offload *xo = xfrm_offload(skb);
-
- skb->transport_header += x->props.header_len;
- ops = rcu_dereference(inet_offloads[xo->proto]);
- if (likely(ops && ops->callbacks.gso_segment))
- segs = ops->callbacks.gso_segment(skb, features);
-
- return segs;
-}
-
-static void xfrm4_transport_xmit(struct xfrm_state *x, struct sk_buff *skb)
-{
- struct xfrm_offload *xo = xfrm_offload(skb);
-
- skb_reset_mac_len(skb);
- pskb_pull(skb, skb->mac_len + sizeof(struct iphdr) + x->props.header_len);
-
- if (xo->flags & XFRM_GSO_SEGMENT) {
- skb_reset_transport_header(skb);
- skb->transport_header -= x->props.header_len;
- }
-}
-
-static struct xfrm_mode xfrm4_transport_mode = {
- .input = xfrm4_transport_input,
- .output = xfrm4_transport_output,
- .gso_segment = xfrm4_transport_gso_segment,
- .xmit = xfrm4_transport_xmit,
- .owner = THIS_MODULE,
- .encap = XFRM_MODE_TRANSPORT,
-};
-
-static int __init xfrm4_transport_init(void)
-{
- return xfrm_register_mode(&xfrm4_transport_mode, AF_INET);
-}
-
-static void __exit xfrm4_transport_exit(void)
-{
- int err;
-
- err = xfrm_unregister_mode(&xfrm4_transport_mode, AF_INET);
- BUG_ON(err);
-}
-
-module_init(xfrm4_transport_init);
-module_exit(xfrm4_transport_exit);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_XFRM_MODE(AF_INET, XFRM_MODE_TRANSPORT);