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OpenXG-RAN
Commit 944c763c authored by Lionel Gauthier's avatar Lionel Gauthier
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git-svn-id: http://svn.eurecom.fr/openair4G/trunk@6266 818b1a75-f10b-46b9-bf7c-635c3b92a50f
parent c9fb6da1
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Showing with 103 additions and 57 deletions
openair-cn/GTPV1-U/GTPURH/xt_GTPURH.c
View file @ 944c763c
......@@ -30,8 +30,8 @@
#endif
#define ROUTE_PACKET 1
//#define NEW_SKB 1
//#define ROUTE_PACKET 1
#define NEW_SKB 1
#include "xt_GTPURH.h"
......@@ -550,7 +550,7 @@ _gtpurh_target_reassembly(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_ta
static unsigned int
_gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_info *tgi_pP)
_gtpurh_tg4_rem(struct sk_buff *orig_skb_pP, const struct xt_action_param *par_pP)
{
struct iphdr *iph_p = ip_hdr(orig_skb_pP);
struct iphdr *iph2_p = NULL;
......@@ -560,6 +560,7 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
#if defined(NEW_SKB)
struct sk_buff *new_skb_p = NULL;
struct iphdr *new_ip_p = NULL;
unsigned int addr_type = 0;
#endif
uint16_t gtp_payload_size = 0;
......@@ -618,7 +619,7 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
udph_p = (struct udphdr*)skb_pull(skb_p, (iph_p->ihl << 2));
if (udph_p->dest != htons(GTPURH_PORT)) {
pr_info("GTPURH(%d): Not GTPV1U packet (bad UDP dest port)\n",tgi_pP->action);
pr_info("GTPURH: Not GTPV1U packet (bad UDP dest port)\n");
skb_push(skb_p, (iph_p->ihl << 2));
return NF_ACCEPT;
}
......@@ -669,8 +670,7 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
}
//#if 0
if ((skb_p->mark == 0) || (gtp_payload_size != ntohs(iph2_p->tot_len))) {
pr_info("\nGTPURH(%d): Decapsulated packet: %d.%d.%d.%d --> %d.%d.%d.%d Proto: %d, Total Len (IP): %u mark %u Frag offset %u Flags 0x%0x\n",
tgi_pP->action,
pr_info("\nGTPURH: Decapsulated packet: %d.%d.%d.%d --> %d.%d.%d.%d Proto: %d, Total Len (IP): %u mark %u Frag offset %u Flags 0x%0x\n",
iph2_p->saddr & 0xFF,
(iph2_p->saddr & 0x0000FF00) >> 8,
(iph2_p->saddr & 0x00FF0000) >> 16,
......@@ -686,8 +686,7 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
ntohs(iph_p->frag_off) >> 13);
if (gtp_payload_size != ntohs(iph2_p->tot_len)) {
pr_info("GTPURH(%d): Mismatch in lengths GTPU length: %u -> %u, IP length %u\n",
tgi_pP->action,
pr_info("GTPURH: Mismatch in lengths GTPU length: %u -> %u, IP length %u\n",
ntohs(gtpuh_p->length),
gtp_payload_size,
ntohs(iph2_p->tot_len));
......@@ -702,26 +701,6 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
#if defined(ROUTE_PACKET)
_gtpurh_route_packet(skb_p, tgi_pP);
return NF_DROP;
#else
#if defined(NEW_SKB)
new_skb_p = alloc_skb(LL_MAX_HEADER + ntohs(iph2_p->tot_len), GFP_ATOMIC);
if (new_skb_p == NULL) {
return NF_DROP;
}
skb_reserve(new_skb_p, LL_MAX_HEADER);
skb_reset_network_header(new_skb_p);
new_ip_p = (void *)skb_put(new_skb_p, iph2_p->ihl << 2);
skb_reset_transport_header(new_skb_p);
skb_put(new_skb_p, ntohs(iph2_p->tot_len) - iph2_p->ihl << 2);
memcpy(new_ip_p, iph2_p, ntohs(iph2_p->tot_len));
new_skb_p->mark = ntohl(gtpuh_p->tunid);
nf_ct_attach(new_skb_p, skb_p);
new_skb_p->sk = skb_p->sk;
ip_local_out(new_skb_p);
return NF_DROP;
#else
{
int err = 0;
......@@ -754,6 +733,46 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
skb_dst_set(skb_p, &rt->dst);
skb_p->dev = skb_dst(skb_p)->dev;
}
#if defined(NEW_SKB)
new_skb_p = alloc_skb(LL_MAX_HEADER + ntohs(iph2_p->tot_len), GFP_ATOMIC);
if (new_skb_p == NULL) {
return NF_DROP;
}
skb_reserve(new_skb_p, LL_MAX_HEADER);
new_skb_p->protocol = skb_p->protocol;
skb_reset_network_header(new_skb_p);
new_ip_p = (void *)skb_put(new_skb_p, iph2_p->ihl << 2);
skb_reset_transport_header(new_skb_p);
skb_put(new_skb_p, ntohs(iph2_p->tot_len) - (iph2_p->ihl << 2));
memcpy(new_ip_p, iph2_p, ntohs(iph2_p->tot_len));
new_skb_p->mark = ntohl(gtpuh_p->tunid);
//new_skb_p->mark = skb_p->mark;
/* ip_route_me_harder expects skb->dst to be set */
skb_dst_set(new_skb_p, dst_clone(skb_dst(skb_p)));
if (ip_route_me_harder(new_skb_p, RTN_UNSPEC) < 0)
goto free_new_skb;
new_ip_p->ttl = ip4_dst_hoplimit(skb_dst(new_skb_p));
new_skb_p->ip_summed = CHECKSUM_NONE;
/* "Never happens" (?) */
if (new_skb_p->len > dst_mtu(skb_dst(new_skb_p)))
goto free_new_skb;
nf_ct_attach(new_skb_p, skb_p);
ip_local_out(new_skb_p);
return NF_DROP;
free_new_skb:
kfree_skb(new_skb_p);
return NF_DROP;
#else
return NF_ACCEPT;
#endif
#endif
......@@ -761,52 +780,79 @@ _gtpurh_target_rem(struct sk_buff *orig_skb_pP, const struct xt_gtpurh_target_in
static unsigned int
xt_gtpurh_target(struct sk_buff *skb_pP, const struct xt_action_param *par)
gtpurh_tg6(struct sk_buff *skb_pP, const struct xt_action_param *par_pP)
{
const struct xt_gtpurh_target_info *tgi_p = par->targinfo;
int result = NF_ACCEPT;
const struct xt_gtpurh_target_info *tgi_p = par_pP->targinfo;
int result = NF_DROP;
if (tgi_p == NULL)
{
if (tgi_p == NULL) {
return result;
}
if (tgi_p->action == PARAM_GTPURH_ACTION_REM)
{
result = _gtpurh_target_rem(skb_pP, tgi_p);
if (tgi_p->action == PARAM_GTPURH_ACTION_REM) {
result = NF_DROP; // TO DO
}
return result;
}
static struct xt_target xt_gtpurh_reg __read_mostly =
static unsigned int
gtpurh_tg4(struct sk_buff *skb_pP, const struct xt_action_param *par_pP)
{
const struct xt_gtpurh_target_info *tgi_p = par_pP->targinfo;
int result = NF_ACCEPT;
if (tgi_p == NULL) {
return result;
}
if (tgi_p->action == PARAM_GTPURH_ACTION_REM) {
result = _gtpurh_tg4_rem(skb_pP, par_pP);
}
return result;
}
static struct xt_target gtpurh_tg_reg[] __read_mostly = {
{
.name = "GTPURH",
.revision = 0,
.family = NFPROTO_IPV6,
.proto = IPPROTO_UDP,
.table = "raw",
.target = gtpurh_tg6,
.me = THIS_MODULE,
},
{
.name = "GTPURH",
.revision = 0,
.family = AF_INET,
.family = NFPROTO_IPV4,
.hooks = (1 << NF_INET_PRE_ROUTING) |
(1 << NF_INET_LOCAL_OUT),
.proto = IPPROTO_UDP,
.table = "raw",
.target = xt_gtpurh_target,
.target = gtpurh_tg4,
.targetsize = sizeof(struct xt_gtpurh_target_info),
.me = THIS_MODULE,
},
};
static int __init xt_gtpurh_init(void)
static int __init gtpurh_tg_init(void)
{
pr_info("GTPURH: Initializing module (KVersion: %d)\n", KVERSION);
pr_info("GTPURH: Copyright Polaris Networks 2010-2011\n");
pr_info("GTPURH: Modified by EURECOM Lionel GAUTHIER 2014\n");
//hash_init(ip_fragments);
return xt_register_target(&xt_gtpurh_reg);
return xt_register_targets(gtpurh_tg_reg, ARRAY_SIZE(gtpurh_tg_reg));
}
static void __exit xt_gtpurh_exit(void)
static void __exit gtpurh_tg_exit(void)
{
xt_unregister_target(&xt_gtpurh_reg);
xt_unregister_targets(gtpurh_tg_reg, ARRAY_SIZE(gtpurh_tg_reg));
//_gtpurh_delete_collection_ip_fragments();
pr_info("GTPURH: Unloading module\n");
}
module_init(xt_gtpurh_init);
module_exit(xt_gtpurh_exit);
module_init(gtpurh_tg_init);
module_exit(gtpurh_tg_exit);
MODULE_ALIAS("ipt6_GTPURH");
MODULE_ALIAS("ipt_GTPURH");
openair-cn/GTPV1-U/GTPURH/xt_GTPURH.h
View file @ 944c763c
......@@ -16,11 +16,11 @@ enum xt_gtpurh_mode_
struct xt_gtpurh_target_info
{
u_int32_t laddr;
u_int32_t raddr;
u_int32_t ltun;
u_int32_t rtun;
u_int32_t action;
u_int32_t laddr __attribute__((aligned(8)));
u_int32_t raddr __attribute__((aligned(8)));
u_int32_t ltun __attribute__((aligned(8)));
u_int32_t rtun __attribute__((aligned(8)));
u_int32_t action __attribute__((aligned(8)));
};
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