Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 177 insertions, 0 deletions

diff --git a/net/ipv4/ipvs/ip_vs_proto_ah.c b/net/ipv4/ipvs/ip_vs_proto_ah.c
new file mode 100644
index 00000000000..453e94a0bbd
--- /dev/null
+++ b/net/ipv4/ipvs/ip_vs_proto_ah.c
@@ -0,0 +1,177 @@
+/*
+ * ip_vs_proto_ah.c:	AH IPSec load balancing support for IPVS
+ *
+ * Version:     $Id: ip_vs_proto_ah.c,v 1.1 2003/07/04 15:04:37 wensong Exp $
+ *
+ * Authors:	Julian Anastasov <ja@ssi.bg>, February 2002
+ *		Wensong Zhang <wensong@linuxvirtualserver.org>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		version 2 as published by the Free Software Foundation;
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv4.h>
+
+#include <net/ip_vs.h>
+
+
+/* TODO:
+
+struct isakmp_hdr {
+	__u8		icookie[8];
+	__u8		rcookie[8];
+	__u8		np;
+	__u8		version;
+	__u8		xchgtype;
+	__u8		flags;
+	__u32		msgid;
+	__u32		length;
+};
+
+*/
+
+#define PORT_ISAKMP	500
+
+
+static struct ip_vs_conn *
+ah_conn_in_get(const struct sk_buff *skb,
+	       struct ip_vs_protocol *pp,
+	       const struct iphdr *iph,
+	       unsigned int proto_off,
+	       int inverse)
+{
+	struct ip_vs_conn *cp;
+
+	if (likely(!inverse)) {
+		cp = ip_vs_conn_in_get(IPPROTO_UDP,
+				       iph->saddr,
+				       __constant_htons(PORT_ISAKMP),
+				       iph->daddr,
+				       __constant_htons(PORT_ISAKMP));
+	} else {
+		cp = ip_vs_conn_in_get(IPPROTO_UDP,
+				       iph->daddr,
+				       __constant_htons(PORT_ISAKMP),
+				       iph->saddr,
+				       __constant_htons(PORT_ISAKMP));
+	}
+
+	if (!cp) {
+		/*
+		 * We are not sure if the packet is from our
+		 * service, so our conn_schedule hook should return NF_ACCEPT
+		 */
+		IP_VS_DBG(12, "Unknown ISAKMP entry for outin packet "
+			  "%s%s %u.%u.%u.%u->%u.%u.%u.%u\n",
+			  inverse ? "ICMP+" : "",
+			  pp->name,
+			  NIPQUAD(iph->saddr),
+			  NIPQUAD(iph->daddr));
+	}
+
+	return cp;
+}
+
+
+static struct ip_vs_conn *
+ah_conn_out_get(const struct sk_buff *skb, struct ip_vs_protocol *pp,
+		const struct iphdr *iph, unsigned int proto_off, int inverse)
+{
+	struct ip_vs_conn *cp;
+
+	if (likely(!inverse)) {
+		cp = ip_vs_conn_out_get(IPPROTO_UDP,
+					iph->saddr,
+					__constant_htons(PORT_ISAKMP),
+					iph->daddr,
+					__constant_htons(PORT_ISAKMP));
+	} else {
+		cp = ip_vs_conn_out_get(IPPROTO_UDP,
+					iph->daddr,
+					__constant_htons(PORT_ISAKMP),
+					iph->saddr,
+					__constant_htons(PORT_ISAKMP));
+	}
+
+	if (!cp) {
+		IP_VS_DBG(12, "Unknown ISAKMP entry for inout packet "
+			  "%s%s %u.%u.%u.%u->%u.%u.%u.%u\n",
+			  inverse ? "ICMP+" : "",
+			  pp->name,
+			  NIPQUAD(iph->saddr),
+			  NIPQUAD(iph->daddr));
+	}
+
+	return cp;
+}
+
+
+static int
+ah_conn_schedule(struct sk_buff *skb,
+		 struct ip_vs_protocol *pp,
+		 int *verdict, struct ip_vs_conn **cpp)
+{
+	/*
+	 * AH is only related traffic. Pass the packet to IP stack.
+	 */
+	*verdict = NF_ACCEPT;
+	return 0;
+}
+
+
+static void
+ah_debug_packet(struct ip_vs_protocol *pp, const struct sk_buff *skb,
+		int offset, const char *msg)
+{
+	char buf[256];
+	struct iphdr _iph, *ih;
+
+	ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
+	if (ih == NULL)
+		sprintf(buf, "%s TRUNCATED", pp->name);
+	else
+		sprintf(buf, "%s %u.%u.%u.%u->%u.%u.%u.%u",
+			pp->name, NIPQUAD(ih->saddr),
+			NIPQUAD(ih->daddr));
+
+	printk(KERN_DEBUG "IPVS: %s: %s\n", msg, buf);
+}
+
+
+static void ah_init(struct ip_vs_protocol *pp)
+{
+	/* nothing to do now */
+}
+
+
+static void ah_exit(struct ip_vs_protocol *pp)
+{
+	/* nothing to do now */
+}
+
+
+struct ip_vs_protocol ip_vs_protocol_ah = {
+	.name =			"AH",
+	.protocol =		IPPROTO_AH,
+	.dont_defrag =		1,
+	.init =			ah_init,
+	.exit =			ah_exit,
+	.conn_schedule =	ah_conn_schedule,
+	.conn_in_get =		ah_conn_in_get,
+	.conn_out_get =		ah_conn_out_get,
+	.snat_handler =		NULL,
+	.dnat_handler =		NULL,
+	.csum_check =		NULL,
+	.state_transition =	NULL,
+	.register_app =		NULL,
+	.unregister_app =	NULL,
+	.app_conn_bind =	NULL,
+	.debug_packet =		ah_debug_packet,
+	.timeout_change =	NULL,		/* ISAKMP */
+	.set_state_timeout =	NULL,
+};