Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / ipv4 / xfrm4_state.c

diff --git a/kernel/net/ipv4/xfrm4_state.c b/kernel/net/ipv4/xfrm4_state.c
new file mode 100644 (file)
index 0000000..542074c
--- /dev/null
+++ b/kernel/net/ipv4/xfrm4_state.c
@@ -0,0 +1,100 @@
+/*
+ * xfrm4_state.c
+ *
+ * Changes:
+ *     YOSHIFUJI Hideaki @USAGI
+ *             Split up af-specific portion
+ *
+ */
+
+#include <net/ip.h>
+#include <net/xfrm.h>
+#include <linux/pfkeyv2.h>
+#include <linux/ipsec.h>
+#include <linux/netfilter_ipv4.h>
+#include <linux/export.h>
+
+static int xfrm4_init_flags(struct xfrm_state *x)
+{
+       if (xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc)
+               x->props.flags |= XFRM_STATE_NOPMTUDISC;
+       return 0;
+}
+
+static void
+__xfrm4_init_tempsel(struct xfrm_selector *sel, const struct flowi *fl)
+{
+       const struct flowi4 *fl4 = &fl->u.ip4;
+
+       sel->daddr.a4 = fl4->daddr;
+       sel->saddr.a4 = fl4->saddr;
+       sel->dport = xfrm_flowi_dport(fl, &fl4->uli);
+       sel->dport_mask = htons(0xffff);
+       sel->sport = xfrm_flowi_sport(fl, &fl4->uli);
+       sel->sport_mask = htons(0xffff);
+       sel->family = AF_INET;
+       sel->prefixlen_d = 32;
+       sel->prefixlen_s = 32;
+       sel->proto = fl4->flowi4_proto;
+       sel->ifindex = fl4->flowi4_oif;
+}
+
+static void
+xfrm4_init_temprop(struct xfrm_state *x, const struct xfrm_tmpl *tmpl,
+                  const xfrm_address_t *daddr, const xfrm_address_t *saddr)
+{
+       x->id = tmpl->id;
+       if (x->id.daddr.a4 == 0)
+               x->id.daddr.a4 = daddr->a4;
+       x->props.saddr = tmpl->saddr;
+       if (x->props.saddr.a4 == 0)
+               x->props.saddr.a4 = saddr->a4;
+       x->props.mode = tmpl->mode;
+       x->props.reqid = tmpl->reqid;
+       x->props.family = AF_INET;
+}
+
+int xfrm4_extract_header(struct sk_buff *skb)
+{
+       const struct iphdr *iph = ip_hdr(skb);
+
+       XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph);
+       XFRM_MODE_SKB_CB(skb)->id = iph->id;
+       XFRM_MODE_SKB_CB(skb)->frag_off = iph->frag_off;
+       XFRM_MODE_SKB_CB(skb)->tos = iph->tos;
+       XFRM_MODE_SKB_CB(skb)->ttl = iph->ttl;
+       XFRM_MODE_SKB_CB(skb)->optlen = iph->ihl * 4 - sizeof(*iph);
+       memset(XFRM_MODE_SKB_CB(skb)->flow_lbl, 0,
+              sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));
+
+       return 0;
+}
+
+static struct xfrm_state_afinfo xfrm4_state_afinfo = {
+       .family                 = AF_INET,
+       .proto                  = IPPROTO_IPIP,
+       .eth_proto              = htons(ETH_P_IP),
+       .owner                  = THIS_MODULE,
+       .init_flags             = xfrm4_init_flags,
+       .init_tempsel           = __xfrm4_init_tempsel,
+       .init_temprop           = xfrm4_init_temprop,
+       .output                 = xfrm4_output,
+       .output_finish          = xfrm4_output_finish,
+       .extract_input          = xfrm4_extract_input,
+       .extract_output         = xfrm4_extract_output,
+       .transport_finish       = xfrm4_transport_finish,
+       .local_error            = xfrm4_local_error,
+};
+
+void __init xfrm4_state_init(void)
+{
+       xfrm_state_register_afinfo(&xfrm4_state_afinfo);
+}
+
+#if 0
+void __exit xfrm4_state_fini(void)
+{
+       xfrm_state_unregister_afinfo(&xfrm4_state_afinfo);
+}
+#endif  /*  0  */
+