本文整理汇总了C++中IP_VS_DBG_RL函数的典型用法代码示例。如果您正苦于以下问题：C++ IP_VS_DBG_RL函数的具体用法？C++ IP_VS_DBG_RL怎么用？C++ IP_VS_DBG_RL使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了IP_VS_DBG_RL函数的13个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: tcp_save_out_seq
/* save tcp sequense for fullnat/nat, INside to OUTside */
static void
tcp_save_out_seq(struct sk_buff *skb, struct ip_vs_conn *cp,
struct tcphdr *th, int ihl)
{
if (unlikely(th == NULL) || unlikely(cp == NULL) ||
unlikely(skb == NULL))
return;
if (sysctl_ip_vs_conn_expire_tcp_rst && !th->rst) {
/* seq out of order. just skip */
if (before(ntohl(th->ack_seq), ntohl(cp->rs_ack_seq)) &&
(cp->rs_ack_seq != 0))
return;
if (th->syn && th->ack)
cp->rs_end_seq = htonl(ntohl(th->seq) + 1);
else
cp->rs_end_seq = htonl(ntohl(th->seq) + skb->len
- ihl - (th->doff << 2));
cp->rs_ack_seq = th->ack_seq;
IP_VS_DBG_RL("packet from RS, seq:%u ack_seq:%u.",
ntohl(th->seq), ntohl(th->ack_seq));
IP_VS_DBG_RL("port:%u->%u", ntohs(th->source), ntohs(th->dest));
}
}
开发者ID:Addision，项目名称:LVS，代码行数:27，代码来源:ip_vs_proto_tcp.c
示例2: __ip_vs_route_output_v6
static struct dst_entry *
__ip_vs_route_output_v6(struct net *net, struct in6_addr *daddr,
struct in6_addr *ret_saddr, int do_xfrm)
{
struct dst_entry *dst;
struct flowi6 fl6 = {
.daddr = *daddr,
};
dst = ip6_route_output(net, NULL, &fl6);
if (dst->error)
goto out_err;
if (!ret_saddr)
return dst;
if (ipv6_addr_any(&fl6.saddr) &&
ipv6_dev_get_saddr(net, ip6_dst_idev(dst)->dev,
&fl6.daddr, 0, &fl6.saddr) < 0)
goto out_err;
if (do_xfrm) {
dst = xfrm_lookup(net, dst, flowi6_to_flowi(&fl6), NULL, 0);
if (IS_ERR(dst)) {
dst = NULL;
goto out_err;
}
}
*ret_saddr = fl6.saddr;
return dst;
out_err:
dst_release(dst);
IP_VS_DBG_RL("ip6_route_output error, dest: %pI6\n", daddr);
return NULL;
}
开发者ID:garyvan，项目名称:openwrt-1.6，代码行数:33，代码来源:ip_vs_xmit.c
示例3: __ip_vs_get_out_rt
static struct rtable *
__ip_vs_get_out_rt(struct ip_vs_conn *cp, u32 rtos)
{
struct rtable *rt; /* Route to the other host */
struct ip_vs_dest *dest = cp->dest;
if (dest) {
spin_lock(&dest->dst_lock);
if (!(rt = (struct rtable *)
__ip_vs_dst_check(dest, rtos, 0))) {
struct flowi fl = {
.oif = 0,
.nl_u = {
.ip4_u = {
.daddr = dest->addr.ip,
.saddr = 0,
.tos = rtos, } },
};
if (ip_route_output_key(&init_net, &rt, &fl)) {
spin_unlock(&dest->dst_lock);
IP_VS_DBG_RL("ip_route_output error, dest: %pI4\n",
&dest->addr.ip);
return NULL;
}
__ip_vs_dst_set(dest, rtos, dst_clone(&rt->u.dst));
IP_VS_DBG(10, "new dst %pI4, refcnt=%d, rtos=%X\n",
&dest->addr.ip,
atomic_read(&rt->u.dst.__refcnt), rtos);
}
spin_unlock(&dest->dst_lock);
} else {
开发者ID:flwh，项目名称:Alcatel_OT_985_kernel，代码行数:32，代码来源:ip_vs_xmit.c
示例4: memset
/* Get route to daddr, update *saddr, optionally bind route to saddr */
static struct rtable *do_output_route4(struct net *net, __be32 daddr,
int rt_mode, __be32 *saddr)
{
struct flowi4 fl4;
struct rtable *rt;
int loop = 0;
memset(&fl4, 0, sizeof(fl4));
fl4.daddr = daddr;
fl4.saddr = (rt_mode & IP_VS_RT_MODE_CONNECT) ? *saddr : 0;
fl4.flowi4_flags = (rt_mode & IP_VS_RT_MODE_KNOWN_NH) ?
FLOWI_FLAG_KNOWN_NH : 0;
retry:
rt = ip_route_output_key(net, &fl4);
if (IS_ERR(rt)) {
/* Invalid saddr ? */
if (PTR_ERR(rt) == -EINVAL && *saddr &&
rt_mode & IP_VS_RT_MODE_CONNECT && !loop) {
*saddr = 0;
flowi4_update_output(&fl4, 0, 0, daddr, 0);
goto retry;
}
IP_VS_DBG_RL("ip_route_output error, dest: %pI4\n", &daddr);
return NULL;
} else if (!*saddr && rt_mode & IP_VS_RT_MODE_CONNECT && fl4.saddr) {
ip_rt_put(rt);
*saddr = fl4.saddr;
flowi4_update_output(&fl4, 0, 0, daddr, fl4.saddr);
loop++;
goto retry;
}
*saddr = fl4.saddr;
return rt;
}
开发者ID:garyvan，项目名称:openwrt-1.6，代码行数:36，代码来源:ip_vs_xmit.c
示例5: __ip_vs_get_out_rt
/*
* Get route to destination or remote server
* rt_mode: flags, &1=Allow local dest, &2=Allow non-local dest,
* &4=Allow redirect from remote daddr to local
*/
static struct rtable *
__ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest,
__be32 daddr, u32 rtos, int rt_mode)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct rtable *rt; /* Route to the other host */
struct rtable *ort; /* Original route */
int local;
if (dest) {
spin_lock(&dest->dst_lock);
if (!(rt = (struct rtable *)
__ip_vs_dst_check(dest, rtos))) {
struct flowi fl = {
.oif = 0,
.nl_u = {
.ip4_u = {
.daddr = dest->addr.ip,
.saddr = 0,
.tos = rtos, } },
};
if (ip_route_output_key(net, &rt, &fl)) {
spin_unlock(&dest->dst_lock);
IP_VS_DBG_RL("ip_route_output error, dest: %pI4\n",
&dest->addr.ip);
return NULL;
}
__ip_vs_dst_set(dest, rtos, dst_clone(&rt->dst), 0);
IP_VS_DBG(10, "new dst %pI4, refcnt=%d, rtos=%X\n",
&dest->addr.ip,
atomic_read(&rt->dst.__refcnt), rtos);
}
spin_unlock(&dest->dst_lock);
} else {
开发者ID:Adjustxx，项目名称:Savaged-Zen，代码行数:40，代码来源:ip_vs_xmit.c
示例6: __ip_vs_get_out_rt
/* Get route to destination or remote server */
static struct rtable *
__ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest,
__be32 daddr, u32 rtos, int rt_mode, __be32 *ret_saddr)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct rtable *rt; /* Route to the other host */
struct rtable *ort; /* Original route */
int local;
if (dest) {
spin_lock(&dest->dst_lock);
if (!(rt = (struct rtable *)
__ip_vs_dst_check(dest, rtos))) {
rt = do_output_route4(net, dest->addr.ip, rtos,
rt_mode, &dest->dst_saddr.ip);
if (!rt) {
spin_unlock(&dest->dst_lock);
return NULL;
}
__ip_vs_dst_set(dest, rtos, dst_clone(&rt->dst), 0);
IP_VS_DBG(10, "new dst %pI4, src %pI4, refcnt=%d, "
"rtos=%X\n",
&dest->addr.ip, &dest->dst_saddr.ip,
atomic_read(&rt->dst.__refcnt), rtos);
}
daddr = dest->addr.ip;
if (ret_saddr)
*ret_saddr = dest->dst_saddr.ip;
spin_unlock(&dest->dst_lock);
} else {
__be32 saddr = htonl(INADDR_ANY);
/* For such unconfigured boxes avoid many route lookups
* for performance reasons because we do not remember saddr
*/
rt_mode &= ~IP_VS_RT_MODE_CONNECT;
rt = do_output_route4(net, daddr, rtos, rt_mode, &saddr);
if (!rt)
return NULL;
if (ret_saddr)
*ret_saddr = saddr;
}
local = rt->rt_flags & RTCF_LOCAL;
if (!((local ? IP_VS_RT_MODE_LOCAL : IP_VS_RT_MODE_NON_LOCAL) &
rt_mode)) {
IP_VS_DBG_RL("Stopping traffic to %s address, dest: %pI4\n",
(rt->rt_flags & RTCF_LOCAL) ?
"local":"non-local", &daddr);
ip_rt_put(rt);
return NULL;
}
if (local && !(rt_mode & IP_VS_RT_MODE_RDR) &&
!((ort = skb_rtable(skb)) && ort->rt_flags & RTCF_LOCAL)) {
IP_VS_DBG_RL("Redirect from non-local address %pI4 to local "
"requires NAT method, dest: %pI4\n",
&ip_hdr(skb)->daddr, &daddr);
ip_rt_put(rt);
return NULL;
}
if (unlikely(!local && ipv4_is_loopback(ip_hdr(skb)->saddr))) {
IP_VS_DBG_RL("Stopping traffic from loopback address %pI4 "
"to non-local address, dest: %pI4\n",
&ip_hdr(skb)->saddr, &daddr);
ip_rt_put(rt);
return NULL;
}
return rt;
}
开发者ID:vineetnayak，项目名称:linux，代码行数:71，代码来源:ip_vs_xmit.c
示例7: syn_proxy_send_rs_syn
//.........这里部分代码省略.........
new_th->cwr = 0;
syn_proxy_syn_build_options((__be32 *) (new_th + 1), opt);
/*
* Set ip hdr
* Attention: set source and dest addr to ack skb's.
* we rely on packet_xmit func to do NATs thing.
*/
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
struct ipv6hdr *ack_iph = ipv6_hdr(skb);
struct ipv6hdr *iph =
(struct ipv6hdr *)skb_push(syn_skb, sizeof(struct ipv6hdr));
tcphoff = sizeof(struct ipv6hdr);
skb_reset_network_header(syn_skb);
memcpy(&iph->saddr, &ack_iph->saddr, sizeof(struct in6_addr));
memcpy(&iph->daddr, &ack_iph->daddr, sizeof(struct in6_addr));
iph->version = 6;
iph->nexthdr = NEXTHDR_TCP;
iph->payload_len = htons(tcp_hdr_size);
iph->hop_limit = IPV6_DEFAULT_HOPLIMIT;
new_th->check = 0;
syn_skb->csum =
skb_checksum(syn_skb, tcphoff, syn_skb->len - tcphoff, 0);
new_th->check =
csum_ipv6_magic(&iph->saddr, &iph->daddr,
syn_skb->len - tcphoff, IPPROTO_TCP,
syn_skb->csum);
} else
#endif
{
struct iphdr *ack_iph = ip_hdr(skb);
u32 rtos = RT_TOS(ack_iph->tos);
struct iphdr *iph =
(struct iphdr *)skb_push(syn_skb, sizeof(struct iphdr));
tcphoff = sizeof(struct iphdr);
skb_reset_network_header(syn_skb);
*((__u16 *) iph) = htons((4 << 12) | (5 << 8) | (rtos & 0xff));
iph->tot_len = htons(syn_skb->len);
iph->frag_off = htons(IP_DF);
/* FIX_ME: what ttl shoule we use */
iph->ttl = IPDEFTTL;
iph->protocol = IPPROTO_TCP;
iph->saddr = ack_iph->saddr;
iph->daddr = ack_iph->daddr;
ip_send_check(iph);
new_th->check = 0;
syn_skb->csum =
skb_checksum(syn_skb, tcphoff, syn_skb->len - tcphoff, 0);
new_th->check =
csum_tcpudp_magic(iph->saddr, iph->daddr,
syn_skb->len - tcphoff, IPPROTO_TCP,
syn_skb->csum);
}
/* Save syn_skb if syn retransmission is on */
if (sysctl_ip_vs_synproxy_syn_retry > 0) {
cp->syn_skb = skb_copy(syn_skb, GFP_ATOMIC);
atomic_set(&cp->syn_retry_max, sysctl_ip_vs_synproxy_syn_retry);
}
/* Save info for fast_response_xmit */
if(sysctl_ip_vs_fast_xmit && skb->dev &&
likely(skb->dev->type == ARPHRD_ETHER) &&
skb_mac_header_was_set(skb)) {
struct ethhdr *eth = (struct ethhdr *)skb_mac_header(skb);
if(likely(cp->indev == NULL)) {
cp->indev = skb->dev;
dev_hold(cp->indev);
}
if (unlikely(cp->indev != skb->dev)) {
dev_put(cp->indev);
cp->indev = skb->dev;
dev_hold(cp->indev);
}
memcpy(cp->src_hwaddr, eth->h_source, ETH_ALEN);
memcpy(cp->dst_hwaddr, eth->h_dest, ETH_ALEN);
IP_VS_INC_ESTATS(ip_vs_esmib, FAST_XMIT_SYNPROXY_SAVE);
IP_VS_DBG_RL("syn_proxy_send_rs_syn netdevice:%s\n",
netdev_name(skb->dev));
}
/* count in the syn packet */
ip_vs_in_stats(cp, skb);
/* If xmit failed, syn_skb will be freed correctly. */
cp->packet_xmit(syn_skb, cp, pp);
return 1;
}
开发者ID:tclh123，项目名称:lvs-tool，代码行数:101，代码来源:ip_vs_synproxy.c
示例8: ip_vs_in
/*
* Check if it's for virtual services, look it up,
* and send it on its way...
*/
static unsigned int
ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
int ret, restart;
int ihl;
/*
* Big tappo: only PACKET_HOST (neither loopback nor mcasts)
* ... don't know why 1st test DOES NOT include 2nd (?)
*/
if (unlikely(skb->pkt_type != PACKET_HOST
|| skb->dev == &loopback_dev || skb->sk)) {
IP_VS_DBG(12, "packet type=%d proto=%d daddr=%d.%d.%d.%d ignored\n",
skb->pkt_type,
ip_hdr(skb)->protocol,
NIPQUAD(ip_hdr(skb)->daddr));
return NF_ACCEPT;
}
iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
int related, verdict = ip_vs_in_icmp(pskb, &related, hooknum);
if (related)
return verdict;
skb = *pskb;
iph = ip_hdr(skb);
}
/* Protocol supported? */
pp = ip_vs_proto_get(iph->protocol);
if (unlikely(!pp))
return NF_ACCEPT;
ihl = iph->ihl << 2;
/*
* Check if the packet belongs to an existing connection entry
*/
cp = pp->conn_in_get(skb, pp, iph, ihl, 0);
if (unlikely(!cp)) {
int v;
if (!pp->conn_schedule(skb, pp, &v, &cp))
return v;
}
if (unlikely(!cp)) {
/* sorry, all this trouble for a no-hit :) */
IP_VS_DBG_PKT(12, pp, skb, 0,
"packet continues traversal as normal");
return NF_ACCEPT;
}
IP_VS_DBG_PKT(11, pp, skb, 0, "Incoming packet");
/* Check the server status */
if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {
/* the destination server is not available */
if (sysctl_ip_vs_expire_nodest_conn) {
/* try to expire the connection immediately */
ip_vs_conn_expire_now(cp);
}
/* don't restart its timer, and silently
drop the packet. */
__ip_vs_conn_put(cp);
return NF_DROP;
}
ip_vs_in_stats(cp, skb);
restart = ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pp);
if (cp->packet_xmit)
ret = cp->packet_xmit(skb, cp, pp);
/* do not touch skb anymore */
else {
IP_VS_DBG_RL("warning: packet_xmit is null");
ret = NF_ACCEPT;
}
/* increase its packet counter and check if it is needed
to be synchronized */
atomic_inc(&cp->in_pkts);
if ((ip_vs_sync_state & IP_VS_STATE_MASTER) &&
(cp->protocol != IPPROTO_TCP ||
cp->state == IP_VS_TCP_S_ESTABLISHED) &&
(atomic_read(&cp->in_pkts) % sysctl_ip_vs_sync_threshold[1]
== sysctl_ip_vs_sync_threshold[0]))
ip_vs_sync_conn(cp);
//.........这里部分代码省略.........
开发者ID:smx-smx，项目名称:dsl-n55u，代码行数:101，代码来源:ip_vs_core.c
示例9: __ip_vs_get_out_rt
/* Get route to destination or remote server */
static int
__ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest,
__be32 daddr, int rt_mode, __be32 *ret_saddr)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct netns_ipvs *ipvs = net_ipvs(net);
struct ip_vs_dest_dst *dest_dst;
struct rtable *rt; /* Route to the other host */
struct rtable *ort; /* Original route */
struct iphdr *iph;
__be16 df;
int mtu;
int local, noref = 1;
if (dest) {
dest_dst = __ip_vs_dst_check(dest);
if (likely(dest_dst))
rt = (struct rtable *) dest_dst->dst_cache;
else {
dest_dst = ip_vs_dest_dst_alloc();
spin_lock_bh(&dest->dst_lock);
if (!dest_dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
goto err_unreach;
}
rt = do_output_route4(net, dest->addr.ip, rt_mode,
&dest_dst->dst_saddr.ip);
if (!rt) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
ip_vs_dest_dst_free(dest_dst);
goto err_unreach;
}
__ip_vs_dst_set(dest, dest_dst, &rt->dst, 0);
spin_unlock_bh(&dest->dst_lock);
IP_VS_DBG(10, "new dst %pI4, src %pI4, refcnt=%d\n",
&dest->addr.ip, &dest_dst->dst_saddr.ip,
atomic_read(&rt->dst.__refcnt));
}
daddr = dest->addr.ip;
if (ret_saddr)
*ret_saddr = dest_dst->dst_saddr.ip;
} else {
__be32 saddr = htonl(INADDR_ANY);
noref = 0;
/* For such unconfigured boxes avoid many route lookups
* for performance reasons because we do not remember saddr
*/
rt_mode &= ~IP_VS_RT_MODE_CONNECT;
rt = do_output_route4(net, daddr, rt_mode, &saddr);
if (!rt)
goto err_unreach;
if (ret_saddr)
*ret_saddr = saddr;
}
local = (rt->rt_flags & RTCF_LOCAL) ? 1 : 0;
if (!((local ? IP_VS_RT_MODE_LOCAL : IP_VS_RT_MODE_NON_LOCAL) &
rt_mode)) {
IP_VS_DBG_RL("Stopping traffic to %s address, dest: %pI4\n",
(rt->rt_flags & RTCF_LOCAL) ?
"local":"non-local", &daddr);
goto err_put;
}
iph = ip_hdr(skb);
if (likely(!local)) {
if (unlikely(ipv4_is_loopback(iph->saddr))) {
IP_VS_DBG_RL("Stopping traffic from loopback address "
"%pI4 to non-local address, dest: %pI4\n",
&iph->saddr, &daddr);
goto err_put;
}
} else {
ort = skb_rtable(skb);
if (!(rt_mode & IP_VS_RT_MODE_RDR) &&
!(ort->rt_flags & RTCF_LOCAL)) {
IP_VS_DBG_RL("Redirect from non-local address %pI4 to "
"local requires NAT method, dest: %pI4\n",
&iph->daddr, &daddr);
goto err_put;
}
/* skb to local stack, preserve old route */
if (!noref)
ip_rt_put(rt);
return local;
}
if (likely(!(rt_mode & IP_VS_RT_MODE_TUNNEL))) {
mtu = dst_mtu(&rt->dst);
df = iph->frag_off & htons(IP_DF);
} else {
struct sock *sk = skb->sk;
mtu = dst_mtu(&rt->dst) - sizeof(struct iphdr);
if (mtu < 68) {
IP_VS_DBG_RL("%s(): mtu less than 68\n", __func__);
//.........这里部分代码省略.........
开发者ID:garyvan，项目名称:openwrt-1.6，代码行数:101，代码来源:ip_vs_xmit.c
示例10: __ip_vs_get_out_rt
/* Get route to destination or remote server */
static int
__ip_vs_get_out_rt(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
__be32 daddr, int rt_mode, __be32 *ret_saddr,
struct ip_vs_iphdr *ipvsh)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct ip_vs_dest_dst *dest_dst;
struct rtable *rt; /* Route to the other host */
int mtu;
int local, noref = 1;
if (dest) {
dest_dst = __ip_vs_dst_check(dest);
if (likely(dest_dst))
rt = (struct rtable *) dest_dst->dst_cache;
else {
dest_dst = ip_vs_dest_dst_alloc();
spin_lock_bh(&dest->dst_lock);
if (!dest_dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
goto err_unreach;
}
rt = do_output_route4(net, dest->addr.ip, rt_mode,
&dest_dst->dst_saddr.ip);
if (!rt) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
ip_vs_dest_dst_free(dest_dst);
goto err_unreach;
}
__ip_vs_dst_set(dest, dest_dst, &rt->dst, 0);
spin_unlock_bh(&dest->dst_lock);
IP_VS_DBG(10, "new dst %pI4, src %pI4, refcnt=%d\n",
&dest->addr.ip, &dest_dst->dst_saddr.ip,
atomic_read(&rt->dst.__refcnt));
}
if (ret_saddr)
*ret_saddr = dest_dst->dst_saddr.ip;
} else {
__be32 saddr = htonl(INADDR_ANY);
noref = 0;
/* For such unconfigured boxes avoid many route lookups
* for performance reasons because we do not remember saddr
*/
rt_mode &= ~IP_VS_RT_MODE_CONNECT;
rt = do_output_route4(net, daddr, rt_mode, &saddr);
if (!rt)
goto err_unreach;
if (ret_saddr)
*ret_saddr = saddr;
}
local = (rt->rt_flags & RTCF_LOCAL) ? 1 : 0;
if (unlikely(crosses_local_route_boundary(skb_af, skb, rt_mode,
local))) {
IP_VS_DBG_RL("We are crossing local and non-local addresses"
" daddr=%pI4\n", &daddr);
goto err_put;
}
if (unlikely(local)) {
/* skb to local stack, preserve old route */
if (!noref)
ip_rt_put(rt);
return local;
}
if (likely(!(rt_mode & IP_VS_RT_MODE_TUNNEL))) {
mtu = dst_mtu(&rt->dst);
} else {
mtu = dst_mtu(&rt->dst) - sizeof(struct iphdr);
if (mtu < 68) {
IP_VS_DBG_RL("%s(): mtu less than 68\n", __func__);
goto err_put;
}
maybe_update_pmtu(skb_af, skb, mtu);
}
if (!ensure_mtu_is_adequate(skb_af, rt_mode, ipvsh, skb, mtu))
goto err_put;
skb_dst_drop(skb);
if (noref) {
if (!local)
skb_dst_set_noref(skb, &rt->dst);
else
skb_dst_set(skb, dst_clone(&rt->dst));
} else
skb_dst_set(skb, &rt->dst);
return local;
err_put:
if (!noref)
ip_rt_put(rt);
return -1;
//.........这里部分代码省略.........
开发者ID:DenisLug，项目名称:mptcp，代码行数:101，代码来源:ip_vs_xmit.c
示例11: ip_vs_synproxy_synack_rcv
/*
* Syn-proxy step 3 logic: receive syn-ack from rs
* Update syn_proxy_seq.delta and send stored ack skbs
* to rs.
*/
int
ip_vs_synproxy_synack_rcv(struct sk_buff *skb, struct ip_vs_conn *cp,
struct ip_vs_protocol *pp, int ihl, int *verdict)
{
struct tcphdr _tcph, *th;
struct sk_buff_head save_skb;
struct sk_buff *tmp_skb = NULL;
struct ip_vs_dest *dest = cp->dest;
th = skb_header_pointer(skb, ihl, sizeof(_tcph), &_tcph);
if (th == NULL) {
*verdict = NF_DROP;
return 0;
}
IP_VS_DBG(6, "in syn_proxy_synack_rcv, "
"seq = %u ack_seq = %u %c%c%c cp->is_synproxy = %u cp->state = %u\n",
ntohl(th->seq),
ntohl(th->ack_seq),
(th->syn) ? 'S' : '-',
(th->ack) ? 'A' : '-',
(th->rst) ? 'R' : '-',
cp->flags & IP_VS_CONN_F_SYNPROXY, cp->state);
skb_queue_head_init(&save_skb);
spin_lock(&cp->lock);
if ((th->syn) && (th->ack) && (!th->rst) &&
(cp->flags & IP_VS_CONN_F_SYNPROXY) &&
cp->state == IP_VS_TCP_S_SYN_SENT) {
cp->syn_proxy_seq.delta =
htonl(cp->syn_proxy_seq.init_seq) - htonl(th->seq);
cp->timeout = pp->timeout_table[cp->state =
IP_VS_TCP_S_ESTABLISHED];
if (dest) {
atomic_inc(&dest->activeconns);
atomic_dec(&dest->inactconns);
cp->flags &= ~IP_VS_CONN_F_INACTIVE;
}
/* save tcp sequense for fullnat/nat, INside to OUTside */
if (sysctl_ip_vs_conn_expire_tcp_rst == 1) {
cp->rs_end_seq = htonl(ntohl(th->seq) + 1);
cp->rs_ack_seq = th->ack_seq;
IP_VS_DBG_RL("packet from RS, seq:%u ack_seq:%u.",
ntohl(th->seq), ntohl(th->ack_seq));
IP_VS_DBG_RL("port:%u->%u", ntohs(th->source),
ntohs(th->dest));
}
/* First: free stored syn skb */
if ((tmp_skb = xchg(&cp->syn_skb, NULL)) != NULL) {
kfree_skb(tmp_skb);
tmp_skb = NULL;
}
if (skb_queue_len(&cp->ack_skb) <= 0) {
/*
* FIXME: maybe a bug here, print err msg and go.
* Attention: cp->state has been changed and we
* should still DROP the Syn/Ack skb.
*/
IP_VS_ERR_RL
("Got ack_skb NULL pointer in syn_proxy_synack_rcv\n");
spin_unlock(&cp->lock);
*verdict = NF_DROP;
return 0;
}
while ((tmp_skb = skb_dequeue(&cp->ack_skb)) != NULL) {
skb_queue_tail(&save_skb, tmp_skb);
}
/*
* Release the lock, because we don't
* touch session any more.
*/
spin_unlock(&cp->lock);
while ((tmp_skb = skb_dequeue(&save_skb)) != NULL) {
/* If xmit failed, syn_skb will be freed correctly. */
cp->packet_xmit(tmp_skb, cp, pp);
}
*verdict = NF_DROP;
return 0;
} else if ((th->rst) &&
(cp->flags & IP_VS_CONN_F_SYNPROXY) &&
cp->state == IP_VS_TCP_S_SYN_SENT) {
__u32 temp_seq;
temp_seq = ntohl(th->seq);
IP_VS_DBG(6, "get rst from rs, seq = %u ack_seq= %u\n",
ntohl(th->seq), ntohl(th->ack_seq));
/* coute the delta of seq */
cp->syn_proxy_seq.delta =
ntohl(cp->syn_proxy_seq.init_seq) - ntohl(th->seq);
//.........这里部分代码省略.........
开发者ID:tclh123，项目名称:lvs-tool，代码行数:101，代码来源:ip_vs_synproxy.c
示例12: __ip_vs_get_out_rt_v6
/*
* Get route to destination or remote server
*/
static int
__ip_vs_get_out_rt_v6(struct sk_buff *skb, struct ip_vs_dest *dest,
struct in6_addr *daddr, struct in6_addr *ret_saddr,
struct ip_vs_iphdr *ipvsh, int do_xfrm, int rt_mode)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct ip_vs_dest_dst *dest_dst;
struct rt6_info *rt; /* Route to the other host */
struct rt6_info *ort; /* Original route */
struct dst_entry *dst;
int mtu;
int local, noref = 1;
if (dest) {
dest_dst = __ip_vs_dst_check(dest);
if (likely(dest_dst))
rt = (struct rt6_info *) dest_dst->dst_cache;
else {
u32 cookie;
dest_dst = ip_vs_dest_dst_alloc();
spin_lock_bh(&dest->dst_lock);
if (!dest_dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
goto err_unreach;
}
dst = __ip_vs_route_output_v6(net, &dest->addr.in6,
&dest_dst->dst_saddr.in6,
do_xfrm);
if (!dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
ip_vs_dest_dst_free(dest_dst);
goto err_unreach;
}
rt = (struct rt6_info *) dst;
cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
__ip_vs_dst_set(dest, dest_dst, &rt->dst, cookie);
spin_unlock_bh(&dest->dst_lock);
IP_VS_DBG(10, "new dst %pI6, src %pI6, refcnt=%d\n",
&dest->addr.in6, &dest_dst->dst_saddr.in6,
atomic_read(&rt->dst.__refcnt));
}
if (ret_saddr)
*ret_saddr = dest_dst->dst_saddr.in6;
} else {
noref = 0;
dst = __ip_vs_route_output_v6(net, daddr, ret_saddr, do_xfrm);
if (!dst)
goto err_unreach;
rt = (struct rt6_info *) dst;
}
local = __ip_vs_is_local_route6(rt);
if (!((local ? IP_VS_RT_MODE_LOCAL : IP_VS_RT_MODE_NON_LOCAL) &
rt_mode)) {
IP_VS_DBG_RL("Stopping traffic to %s address, dest: %pI6c\n",
local ? "local":"non-local", daddr);
goto err_put;
}
if (likely(!local)) {
if (unlikely((!skb->dev || skb->dev->flags & IFF_LOOPBACK) &&
ipv6_addr_type(&ipv6_hdr(skb)->saddr) &
IPV6_ADDR_LOOPBACK)) {
IP_VS_DBG_RL("Stopping traffic from loopback address "
"%pI6c to non-local address, "
"dest: %pI6c\n",
&ipv6_hdr(skb)->saddr, daddr);
goto err_put;
}
} else {
ort = (struct rt6_info *) skb_dst(skb);
if (!(rt_mode & IP_VS_RT_MODE_RDR) &&
!__ip_vs_is_local_route6(ort)) {
IP_VS_DBG_RL("Redirect from non-local address %pI6c "
"to local requires NAT method, "
"dest: %pI6c\n",
&ipv6_hdr(skb)->daddr, daddr);
goto err_put;
}
/* skb to local stack, preserve old route */
if (!noref)
dst_release(&rt->dst);
return local;
}
/* MTU checking */
if (likely(!(rt_mode & IP_VS_RT_MODE_TUNNEL)))
mtu = dst_mtu(&rt->dst);
else {
struct sock *sk = skb->sk;
mtu = dst_mtu(&rt->dst) - sizeof(struct ipv6hdr);
if (mtu < IPV6_MIN_MTU) {
IP_VS_DBG_RL("%s(): mtu less than %d\n", __func__,
IPV6_MIN_MTU);
//.........这里部分代码省略.........
开发者ID:garyvan，项目名称:openwrt-1.6，代码行数:101，代码来源:ip_vs_xmit.c
示例13: __ip_vs_get_out_rt_v6
/*
* Get route to destination or remote server
*/
static int
__ip_vs_get_out_rt_v6(int skb_af, struct sk_buff *skb, struct ip_vs_dest *dest,
struct in6_addr *daddr, struct in6_addr *ret_saddr,
struct ip_vs_iphdr *ipvsh, int do_xfrm, int rt_mode)
{
struct net *net = dev_net(skb_dst(skb)->dev);
struct ip_vs_dest_dst *dest_dst;
struct rt6_info *rt; /* Route to the other host */
struct dst_entry *dst;
int mtu;
int local, noref = 1;
if (dest) {
dest_dst = __ip_vs_dst_check(dest);
if (likely(dest_dst))
rt = (struct rt6_info *) dest_dst->dst_cache;
else {
u32 cookie;
dest_dst = ip_vs_dest_dst_alloc();
spin_lock_bh(&dest->dst_lock);
if (!dest_dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
goto err_unreach;
}
dst = __ip_vs_route_output_v6(net, &dest->addr.in6,
&dest_dst->dst_saddr.in6,
do_xfrm, rt_mode);
if (!dst) {
__ip_vs_dst_set(dest, NULL, NULL, 0);
spin_unlock_bh(&dest->dst_lock);
ip_vs_dest_dst_free(dest_dst);
goto err_unreach;
}
rt = (struct rt6_info *) dst;
cookie = rt6_get_cookie(rt);
__ip_vs_dst_set(dest, dest_dst, &rt->dst, cookie);
spin_unlock_bh(&dest->dst_lock);
IP_VS_DBG(10, "new dst %pI6, src %pI6, refcnt=%d\n",
&dest->addr.in6, &dest_dst->dst_saddr.in6,
atomic_read(&rt->dst.__refcnt));
}
if (ret_saddr)
*ret_saddr = dest_dst->dst_saddr.in6;
} else {
noref = 0;
dst = __ip_vs_route_output_v6(net, daddr, ret_saddr, do_xfrm,
rt_mode);
if (!dst)
goto err_unreach;
rt = (struct rt6_info *) dst;
}
local = __ip_vs_is_local_route6(rt);
if (unlikely(crosses_local_route_boundary(skb_af, skb, rt_mode,
local))) {
IP_VS_DBG_RL("We are crossing local and non-local addresses"
" daddr=%pI6\n", daddr);
goto err_put;
}
if (unlikely(local)) {
/* skb to local stack, preserve old route */
if (!noref)
dst_release(&rt->dst);
return local;
}
/* MTU checking */
if (likely(!(rt_mode & IP_VS_RT_MODE_TUNNEL)))
mtu = dst_mtu(&rt->dst);
else {
mtu = dst_mtu(&rt->dst) - sizeof(struct ipv6hdr);
if (mtu < IPV6_MIN_MTU) {
IP_VS_DBG_RL("%s(): mtu less than %d\n", __func__,
IPV6_MIN_MTU);
goto err_put;
}
maybe_update_pmtu(skb_af, skb, mtu);
}
if (!ensure_mtu_is_adequate(skb_af, rt_mode, ipvsh, skb, mtu))
goto err_put;
skb_dst_drop(skb);
if (noref) {
if (!local)
skb_dst_set_noref(skb, &rt->dst);
else
skb_dst_set(skb, dst_clone(&rt->dst));
} else
skb_dst_set(skb, &rt->dst);
return local;
//.........这里部分代码省略.........
开发者ID:DenisLug，项目名称:mptcp，代码行数:101，代码来源:ip_vs_xmit.c
注：本文中的IP_VS_DBG_RL函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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