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Message-Id: <1220363423-8618-2-git-send-email-juliusv@google.com>
Date: Tue, 2 Sep 2008 15:50:21 +0200
From: Julius Volz <juliusv@...gle.com>
To: netdev@...r.kernel.org, lvs-devel@...r.kernel.org
Cc: horms@...ge.net.au, kaber@...sh.net, vbusam@...gle.com
Subject: [PATCHv3 00/24] Add first IPv6 support to IPVS
extern struct ip_vs_conn *ip_vs_conn_in_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port);
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
+
extern struct ip_vs_conn *ip_vs_ct_in_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port);
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
+
extern struct ip_vs_conn *ip_vs_conn_out_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port);
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port);
/* put back the conn without restarting its timer */
static inline void __ip_vs_conn_put(struct ip_vs_conn *cp)
@@ -654,8 +659,9 @@ extern void ip_vs_conn_put(struct ip_vs_conn *cp);
extern void ip_vs_conn_fill_cport(struct ip_vs_conn *cp, __be16 cport);
extern struct ip_vs_conn *
-ip_vs_conn_new(int proto, __be32 caddr, __be16 cport, __be32 vaddr, __be16 vport,
- __be32 daddr, __be16 dport, unsigned flags,
+ip_vs_conn_new(int af, int proto, const union nf_inet_addr *caddr, __be16 cport,
+ const union nf_inet_addr *vaddr, __be16 vport,
+ const union nf_inet_addr *daddr, __be16 dport, unsigned flags,
struct ip_vs_dest *dest);
extern void ip_vs_conn_expire_now(struct ip_vs_conn *cp);
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index c7f0c2d..664b42c 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -114,9 +114,18 @@ static inline void ct_write_unlock_bh(unsigned key)
/*
* Returns hash value for IPVS connection entry
*/
-static unsigned int ip_vs_conn_hashkey(unsigned proto, __be32 addr, __be16 port)
+static unsigned int ip_vs_conn_hashkey(int af, unsigned proto,
+ const union nf_inet_addr *addr,
+ __be16 port)
{
- return jhash_3words((__force u32)addr, (__force u32)port, proto, ip_vs_conn_rnd)
+#ifdef CONFIG_IP_VS_IPV6
+ if (af == AF_INET6)
+ return jhash_3words(jhash(addr, 16, ip_vs_conn_rnd),
+ (__force u32)port, proto, ip_vs_conn_rnd)
+ & IP_VS_CONN_TAB_MASK;
+#endif
+ return jhash_3words((__force u32)addr->ip, (__force u32)port, proto,
+ ip_vs_conn_rnd)
& IP_VS_CONN_TAB_MASK;
}
@@ -131,7 +140,7 @@ static inline int ip_vs_conn_hash(struct ip_vs_conn *cp)
int ret;
/* Hash by protocol, client address and port */
- hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr.ip, cp->cport);
+ hash = ip_vs_conn_hashkey(cp->af, cp->protocol, &cp->caddr, cp->cport);
ct_write_lock(hash);
@@ -162,7 +171,7 @@ static inline int ip_vs_conn_unhash(struct ip_vs_conn *cp)
int ret;
/* unhash it and decrease its reference counter */
- hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr.ip, cp->cport);
+ hash = ip_vs_conn_hashkey(cp->af, cp->protocol, &cp->caddr, cp->cport);
ct_write_lock(hash);
@@ -187,20 +196,23 @@ static inline int ip_vs_conn_unhash(struct ip_vs_conn *cp)
* d_addr, d_port: pkt dest address (load balancer)
*/
static inline struct ip_vs_conn *__ip_vs_conn_in_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port)
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port)
{
unsigned hash;
struct ip_vs_conn *cp;
- hash = ip_vs_conn_hashkey(protocol, s_addr, s_port);
+ hash = ip_vs_conn_hashkey(af, protocol, s_addr, s_port);
ct_read_lock(hash);
list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
- if (s_addr==cp->caddr.ip && s_port==cp->cport &&
- d_port==cp->vport && d_addr==cp->vaddr.ip &&
+ if (cp->af == af &&
+ ip_vs_addr_equal(af, s_addr, &cp->caddr) &&
+ ip_vs_addr_equal(af, d_addr, &cp->vaddr) &&
+ s_port == cp->cport && d_port == cp->vport &&
((!s_port) ^ (!(cp->flags & IP_VS_CONN_F_NO_CPORT))) &&
- protocol==cp->protocol) {
+ protocol == cp->protocol) {
/* HIT */
atomic_inc(&cp->refcnt);
ct_read_unlock(hash);
@@ -214,39 +226,43 @@ static inline struct ip_vs_conn *__ip_vs_conn_in_get
}
struct ip_vs_conn *ip_vs_conn_in_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port)
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port)
{
struct ip_vs_conn *cp;
- cp = __ip_vs_conn_in_get(protocol, s_addr, s_port, d_addr, d_port);
+ cp = __ip_vs_conn_in_get(af, protocol, s_addr, s_port, d_addr, d_port);
if (!cp && atomic_read(&ip_vs_conn_no_cport_cnt))
- cp = __ip_vs_conn_in_get(protocol, s_addr, 0, d_addr, d_port);
+ cp = __ip_vs_conn_in_get(af, protocol, s_addr, 0, d_addr, d_port);
- IP_VS_DBG(9, "lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
- ip_vs_proto_name(protocol),
- NIPQUAD(s_addr), ntohs(s_port),
- NIPQUAD(d_addr), ntohs(d_port),
- cp?"hit":"not hit");
+ IP_VS_DBG_BUF(9, "lookup/in %s %s:%d->%s:%d %s\n",
+ ip_vs_proto_name(protocol),
+ IP_VS_DBG_ADDR(af, s_addr), ntohs(s_port),
+ IP_VS_DBG_ADDR(af, d_addr), ntohs(d_port),
+ cp ? "hit" : "not hit");
return cp;
}
/* Get reference to connection template */
struct ip_vs_conn *ip_vs_ct_in_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port)
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port)
{
unsigned hash;
struct ip_vs_conn *cp;
- hash = ip_vs_conn_hashkey(protocol, s_addr, s_port);
+ hash = ip_vs_conn_hashkey(af, protocol, s_addr, s_port);
ct_read_lock(hash);
list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
- if (s_addr==cp->caddr.ip && s_port==cp->cport &&
- d_port==cp->vport && d_addr==cp->vaddr.ip &&
+ if (cp->af == af &&
+ ip_vs_addr_equal(af, s_addr, &cp->caddr) &&
+ ip_vs_addr_equal(af, d_addr, &cp->vaddr) &&
+ s_port == cp->cport && d_port == cp->vport &&
cp->flags & IP_VS_CONN_F_TEMPLATE &&
- protocol==cp->protocol) {
+ protocol == cp->protocol) {
/* HIT */
atomic_inc(&cp->refcnt);
goto out;
@@ -257,11 +273,11 @@ struct ip_vs_conn *ip_vs_ct_in_get
out:
ct_read_unlock(hash);
- IP_VS_DBG(9, "template lookup/in %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
- ip_vs_proto_name(protocol),
- NIPQUAD(s_addr), ntohs(s_port),
- NIPQUAD(d_addr), ntohs(d_port),
- cp?"hit":"not hit");
+ IP_VS_DBG_BUF(9, "template lookup/in %s %s:%d->%s:%d %s\n",
+ ip_vs_proto_name(protocol),
+ IP_VS_DBG_ADDR(af, s_addr), ntohs(s_port),
+ IP_VS_DBG_ADDR(af, d_addr), ntohs(d_port),
+ cp ? "hit" : "not hit");
return cp;
}
@@ -273,7 +289,8 @@ struct ip_vs_conn *ip_vs_ct_in_get
* d_addr, d_port: pkt dest address (foreign host)
*/
struct ip_vs_conn *ip_vs_conn_out_get
-(int protocol, __be32 s_addr, __be16 s_port, __be32 d_addr, __be16 d_port)
+(int af, int protocol, const union nf_inet_addr *s_addr, __be16 s_port,
+ const union nf_inet_addr *d_addr, __be16 d_port)
{
unsigned hash;
struct ip_vs_conn *cp, *ret=NULL;
@@ -281,13 +298,15 @@ struct ip_vs_conn *ip_vs_conn_out_get
/*
* Check for "full" addressed entries
*/
- hash = ip_vs_conn_hashkey(protocol, d_addr, d_port);
+ hash = ip_vs_conn_hashkey(af, protocol, d_addr, d_port);
ct_read_lock(hash);
list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
- if (d_addr == cp->caddr.ip && d_port == cp->cport &&
- s_port == cp->dport && s_addr == cp->daddr.ip &&
+ if (cp->af == af &&
+ ip_vs_addr_equal(af, d_addr, &cp->caddr) &&
+ ip_vs_addr_equal(af, s_addr, &cp->daddr) &&
+ d_port == cp->cport && s_port == cp->dport &&
protocol == cp->protocol) {
/* HIT */
atomic_inc(&cp->refcnt);
@@ -298,11 +317,11 @@ struct ip_vs_conn *ip_vs_conn_out_get
ct_read_unlock(hash);
- IP_VS_DBG(9, "lookup/out %s %u.%u.%u.%u:%d->%u.%u.%u.%u:%d %s\n",
- ip_vs_proto_name(protocol),
- NIPQUAD(s_addr), ntohs(s_port),
- NIPQUAD(d_addr), ntohs(d_port),
- ret?"hit":"not hit");
+ IP_VS_DBG_BUF(9, "lookup/out %s %s:%d->%s:%d %s\n",
+ ip_vs_proto_name(protocol),
+ IP_VS_DBG_ADDR(af, s_addr), ntohs(s_port),
+ IP_VS_DBG_ADDR(af, d_addr), ntohs(d_port),
+ ret ? "hit" : "not hit");
return ret;
}
@@ -625,8 +644,9 @@ void ip_vs_conn_expire_now(struct ip_vs_conn *cp)
* Create a new connection entry and hash it into the ip_vs_conn_tab
*/
struct ip_vs_conn *
-ip_vs_conn_new(int proto, __be32 caddr, __be16 cport, __be32 vaddr, __be16 vport,
- __be32 daddr, __be16 dport, unsigned flags,
+ip_vs_conn_new(int af, int proto, const union nf_inet_addr *caddr, __be16 cport,
+ const union nf_inet_addr *vaddr, __be16 vport,
+ const union nf_inet_addr *daddr, __be16 dport, unsigned flags,
struct ip_vs_dest *dest)
{
struct ip_vs_conn *cp;
@@ -640,12 +660,13 @@ ip_vs_conn_new(int proto, __be32 caddr, __be16 cport, __be32 vaddr, __be16 vport
INIT_LIST_HEAD(&cp->c_list);
setup_timer(&cp->timer, ip_vs_conn_expire, (unsigned long)cp);
+ cp->af = af;
cp->protocol = proto;
- cp->caddr.ip = caddr;
+ ip_vs_addr_copy(af, &cp->caddr, caddr);
cp->cport = cport;
- cp->vaddr.ip = vaddr;
+ ip_vs_addr_copy(af, &cp->vaddr, vaddr);
cp->vport = vport;
- cp->daddr.ip = daddr;
+ ip_vs_addr_copy(af, &cp->daddr, daddr);
cp->dport = dport;
cp->flags = flags;
spin_lock_init(&cp->lock);
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index a07e5b7..eb0dd47 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -173,19 +173,21 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
__be16 ports[2])
{
struct ip_vs_conn *cp = NULL;
- struct iphdr *iph = ip_hdr(skb);
+ struct ip_vs_iphdr iph;
struct ip_vs_dest *dest;
struct ip_vs_conn *ct;
__be16 dport; /* destination port to forward */
- __be32 snet; /* source network of the client, after masking */
+ union nf_inet_addr snet; /* source network of the client,
+ after masking */
+ ip_vs_fill_iphdr(AF_INET, skb_network_header(skb), &iph);
/* Mask saddr with the netmask to adjust template granularity */
- snet = iph->saddr & svc->netmask;
+ snet.ip = iph.saddr.ip & svc->netmask;
IP_VS_DBG(6, "p-schedule: src %u.%u.%u.%u:%u dest %u.%u.%u.%u:%u "
"mnet %u.%u.%u.%u\n",
- NIPQUAD(iph->saddr), ntohs(ports[0]),
- NIPQUAD(iph->daddr), ntohs(ports[1]),
+ NIPQUAD(iph.saddr.ip), ntohs(ports[0]),
+ NIPQUAD(iph.daddr.ip), ntohs(ports[1]),
NIPQUAD(snet));
/*
@@ -204,11 +206,11 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
if (ports[1] == svc->port) {
/* Check if a template already exists */
if (svc->port != FTPPORT)
- ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
- iph->daddr, ports[1]);
+ ct = ip_vs_ct_in_get(AF_INET, iph.protocol, &snet, 0,
+ &iph.daddr, ports[1]);
else
- ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
- iph->daddr, 0);
+ ct = ip_vs_ct_in_get(AF_INET, iph.protocol, &snet, 0,
+ &iph.daddr, 0);
if (!ct || !ip_vs_check_template(ct)) {
/*
@@ -228,18 +230,18 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
* for ftp service.
*/
if (svc->port != FTPPORT)
- ct = ip_vs_conn_new(iph->protocol,
- snet, 0,
- iph->daddr,
+ ct = ip_vs_conn_new(AF_INET, iph.protocol,
+ &snet, 0,
+ &iph.daddr,
ports[1],
- dest->addr.ip, dest->port,
+ &dest->addr, dest->port,
IP_VS_CONN_F_TEMPLATE,
dest);
else
- ct = ip_vs_conn_new(iph->protocol,
- snet, 0,
- iph->daddr, 0,
- dest->addr.ip, 0,
+ ct = ip_vs_conn_new(AF_INET, iph.protocol,
+ &snet, 0,
+ &iph.daddr, 0,
+ &dest->addr, 0,
IP_VS_CONN_F_TEMPLATE,
dest);
if (ct == NULL)
@@ -258,12 +260,16 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
* fwmark template: <IPPROTO_IP,caddr,0,fwmark,0,daddr,0>
* port zero template: <protocol,caddr,0,vaddr,0,daddr,0>
*/
- if (svc->fwmark)
- ct = ip_vs_ct_in_get(IPPROTO_IP, snet, 0,
- htonl(svc->fwmark), 0);
- else
- ct = ip_vs_ct_in_get(iph->protocol, snet, 0,
- iph->daddr, 0);
+ if (svc->fwmark) {
+ union nf_inet_addr fwmark = {
+ .all = { 0, 0, 0, htonl(svc->fwmark) }
+ };
+
+ ct = ip_vs_ct_in_get(AF_INET, IPPROTO_IP, &snet, 0,
+ &fwmark, 0);
+ } else
+ ct = ip_vs_ct_in_get(AF_INET, iph.protocol, &snet, 0,
+ &iph.daddr, 0);
if (!ct || !ip_vs_check_template(ct)) {
/*
@@ -282,18 +288,22 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
/*
* Create a template according to the service
*/
- if (svc->fwmark)
- ct = ip_vs_conn_new(IPPROTO_IP,
- snet, 0,
- htonl(svc->fwmark), 0,
- dest->addr.ip, 0,
+ if (svc->fwmark) {
+ union nf_inet_addr fwmark = {
+ .all = { 0, 0, 0, htonl(svc->fwmark) }
+ };
+
+ ct = ip_vs_conn_new(AF_INET, IPPROTO_IP,
+ &snet, 0,
+ &fwmark, 0,
+ &dest->addr, 0,
IP_VS_CONN_F_TEMPLATE,
dest);
- else
- ct = ip_vs_conn_new(iph->protocol,
- snet, 0,
- iph->daddr, 0,
- dest->addr.ip, 0,
+ } else
+ ct = ip_vs_conn_new(AF_INET, iph.protocol,
+ &snet, 0,
+ &iph.daddr, 0,
+ &dest->addr, 0,
IP_VS_CONN_F_TEMPLATE,
dest);
if (ct == NULL)
@@ -310,10 +320,10 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
/*
* Create a new connection according to the template
*/
- cp = ip_vs_conn_new(iph->protocol,
- iph->saddr, ports[0],
- iph->daddr, ports[1],
- dest->addr.ip, dport,
+ cp = ip_vs_conn_new(AF_INET, iph.protocol,
+ &iph.saddr, ports[0],
+ &iph.daddr, ports[1],
+ &dest->addr, dport,
0,
dest);
if (cp == NULL) {
@@ -342,12 +352,12 @@ struct ip_vs_conn *
ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
{
struct ip_vs_conn *cp = NULL;
- struct iphdr *iph = ip_hdr(skb);
+ struct ip_vs_iphdr iph;
struct ip_vs_dest *dest;
__be16 _ports[2], *pptr;
- pptr = skb_header_pointer(skb, iph->ihl*4,
- sizeof(_ports), _ports);
+ ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph);
+ pptr = skb_header_pointer(skb, iph.len, sizeof(_ports), _ports);
if (pptr == NULL)
return NULL;
@@ -377,10 +387,10 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
/*
* Create a connection entry.
*/
- cp = ip_vs_conn_new(iph->protocol,
- iph->saddr, pptr[0],
- iph->daddr, pptr[1],
- dest->addr.ip, dest->port?dest->port:pptr[1],
+ cp = ip_vs_conn_new(AF_INET, iph.protocol,
+ &iph.saddr, pptr[0],
+ &iph.daddr, pptr[1],
+ &dest->addr, dest->port ? dest->port : pptr[1],
0,
dest);
if (cp == NULL)
@@ -408,10 +418,10 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
struct ip_vs_protocol *pp)
{
__be16 _ports[2], *pptr;
- struct iphdr *iph = ip_hdr(skb);
+ struct ip_vs_iphdr iph;
+ ip_vs_fill_iphdr(AF_INET, skb_network_header(skb), &iph);
- pptr = skb_header_pointer(skb, iph->ihl*4,
- sizeof(_ports), _ports);
+ pptr = skb_header_pointer(skb, iph.len, sizeof(_ports), _ports);
if (pptr == NULL) {
ip_vs_service_put(svc);
return NF_DROP;
@@ -421,7 +431,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
and the destination is RTN_UNICAST (and not local), then create
a cache_bypass connection entry */
if (sysctl_ip_vs_cache_bypass && svc->fwmark
- && (inet_addr_type(&init_net, iph->daddr) == RTN_UNICAST)) {
+ && (inet_addr_type(&init_net, iph.daddr.ip) == RTN_UNICAST)) {
int ret, cs;
struct ip_vs_conn *cp;
@@ -429,9 +439,9 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
/* create a new connection entry */
IP_VS_DBG(6, "ip_vs_leave: create a cache_bypass entry\n");
- cp = ip_vs_conn_new(iph->protocol,
- iph->saddr, pptr[0],
- iph->daddr, pptr[1],
+ cp = ip_vs_conn_new(AF_INET, iph.protocol,
+ &iph.saddr, pptr[0],
+ &iph.daddr, pptr[1],
0, 0,
IP_VS_CONN_F_BYPASS,
NULL);
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c
index 2cf47b2..3ce1093 100644
--- a/net/ipv4/ipvs/ip_vs_sync.c
+++ b/net/ipv4/ipvs/ip_vs_sync.c
@@ -366,13 +366,17 @@ static void ip_vs_process_message(const char *buffer, const size_t buflen)
}
if (!(flags & IP_VS_CONN_F_TEMPLATE))
- cp = ip_vs_conn_in_get(s->protocol,
- s->caddr, s->cport,
- s->vaddr, s->vport);
+ cp = ip_vs_conn_in_get(AF_INET, s->protocol,
+ (union nf_inet_addr *)&s->caddr,
+ s->cport,
+ (union nf_inet_addr *)&s->vaddr,
+ s->vport);
else
- cp = ip_vs_ct_in_get(s->protocol,
- s->caddr, s->cport,
- s->vaddr, s->vport);
+ cp = ip_vs_ct_in_get(AF_INET, s->protocol,
+ (union nf_inet_addr *)&s->caddr,
+ s->cport,
+ (union nf_inet_addr *)&s->vaddr,
+ s->vport);
if (!cp) {
/*
* Find the appropriate destination for the connection.
@@ -389,10 +393,13 @@ static void ip_vs_process_message(const char *buffer, const size_t buflen)
else
flags &= ~IP_VS_CONN_F_INACTIVE;
}
- cp = ip_vs_conn_new(s->protocol,
- s->caddr, s->cport,
- s->vaddr, s->vport,
- s->daddr, s->dport,
+ cp = ip_vs_conn_new(AF_INET, s->protocol,
+ (union nf_inet_addr *)s->caddr,
+ s->cport,
+ (union nf_inet_addr *)s->vaddr,
+ s->vport,
+ (union nf_inet_addr *)s->daddr,
+ s->dport,
flags, dest);
if (dest)
atomic_dec(&dest->refcnt);
--
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