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![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
To help in reducing the number of include dependencies, several files were touched as they were getting needed headers indirectly for stuff they use. Thanks also to Alan Menegotto for pointing out that net/dccp/proto.c had linux/dccp.h include twice. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
179 lines
3.8 KiB
C
179 lines
3.8 KiB
C
/*
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* ip_vs_proto_ah.c: AH IPSec load balancing support for IPVS
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*
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* Version: $Id: ip_vs_proto_ah.c,v 1.1 2003/07/04 15:04:37 wensong Exp $
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*
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* Authors: Julian Anastasov <ja@ssi.bg>, February 2002
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* Wensong Zhang <wensong@linuxvirtualserver.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation;
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*
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*/
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/netfilter.h>
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#include <linux/netfilter_ipv4.h>
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#include <net/ip_vs.h>
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/* TODO:
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struct isakmp_hdr {
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__u8 icookie[8];
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__u8 rcookie[8];
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__u8 np;
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__u8 version;
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__u8 xchgtype;
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__u8 flags;
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__u32 msgid;
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__u32 length;
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};
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*/
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#define PORT_ISAKMP 500
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static struct ip_vs_conn *
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ah_conn_in_get(const struct sk_buff *skb,
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struct ip_vs_protocol *pp,
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const struct iphdr *iph,
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unsigned int proto_off,
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int inverse)
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{
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struct ip_vs_conn *cp;
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if (likely(!inverse)) {
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cp = ip_vs_conn_in_get(IPPROTO_UDP,
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iph->saddr,
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__constant_htons(PORT_ISAKMP),
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iph->daddr,
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__constant_htons(PORT_ISAKMP));
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} else {
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cp = ip_vs_conn_in_get(IPPROTO_UDP,
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iph->daddr,
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__constant_htons(PORT_ISAKMP),
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iph->saddr,
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__constant_htons(PORT_ISAKMP));
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}
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if (!cp) {
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/*
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* We are not sure if the packet is from our
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* service, so our conn_schedule hook should return NF_ACCEPT
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*/
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IP_VS_DBG(12, "Unknown ISAKMP entry for outin packet "
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"%s%s %u.%u.%u.%u->%u.%u.%u.%u\n",
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inverse ? "ICMP+" : "",
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pp->name,
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NIPQUAD(iph->saddr),
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NIPQUAD(iph->daddr));
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}
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return cp;
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}
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static struct ip_vs_conn *
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ah_conn_out_get(const struct sk_buff *skb, struct ip_vs_protocol *pp,
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const struct iphdr *iph, unsigned int proto_off, int inverse)
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{
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struct ip_vs_conn *cp;
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if (likely(!inverse)) {
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cp = ip_vs_conn_out_get(IPPROTO_UDP,
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iph->saddr,
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__constant_htons(PORT_ISAKMP),
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iph->daddr,
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__constant_htons(PORT_ISAKMP));
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} else {
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cp = ip_vs_conn_out_get(IPPROTO_UDP,
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iph->daddr,
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__constant_htons(PORT_ISAKMP),
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iph->saddr,
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__constant_htons(PORT_ISAKMP));
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}
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if (!cp) {
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IP_VS_DBG(12, "Unknown ISAKMP entry for inout packet "
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"%s%s %u.%u.%u.%u->%u.%u.%u.%u\n",
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inverse ? "ICMP+" : "",
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pp->name,
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NIPQUAD(iph->saddr),
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NIPQUAD(iph->daddr));
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}
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return cp;
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}
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static int
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ah_conn_schedule(struct sk_buff *skb,
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struct ip_vs_protocol *pp,
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int *verdict, struct ip_vs_conn **cpp)
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{
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/*
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* AH is only related traffic. Pass the packet to IP stack.
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*/
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*verdict = NF_ACCEPT;
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return 0;
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}
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static void
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ah_debug_packet(struct ip_vs_protocol *pp, const struct sk_buff *skb,
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int offset, const char *msg)
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{
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char buf[256];
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struct iphdr _iph, *ih;
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ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
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if (ih == NULL)
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sprintf(buf, "%s TRUNCATED", pp->name);
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else
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sprintf(buf, "%s %u.%u.%u.%u->%u.%u.%u.%u",
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pp->name, NIPQUAD(ih->saddr),
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NIPQUAD(ih->daddr));
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printk(KERN_DEBUG "IPVS: %s: %s\n", msg, buf);
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}
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static void ah_init(struct ip_vs_protocol *pp)
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{
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/* nothing to do now */
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}
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static void ah_exit(struct ip_vs_protocol *pp)
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{
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/* nothing to do now */
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}
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struct ip_vs_protocol ip_vs_protocol_ah = {
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.name = "AH",
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.protocol = IPPROTO_AH,
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.dont_defrag = 1,
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.init = ah_init,
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.exit = ah_exit,
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.conn_schedule = ah_conn_schedule,
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.conn_in_get = ah_conn_in_get,
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.conn_out_get = ah_conn_out_get,
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.snat_handler = NULL,
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.dnat_handler = NULL,
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.csum_check = NULL,
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.state_transition = NULL,
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.register_app = NULL,
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.unregister_app = NULL,
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.app_conn_bind = NULL,
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.debug_packet = ah_debug_packet,
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.timeout_change = NULL, /* ISAKMP */
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.set_state_timeout = NULL,
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};
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