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Commit 3c2e0505 authored by Julius Volz's avatar Julius Volz Committed by Simon Horman
Browse files

IPVS: Add v6 support to ip_vs_service_get() 



Add support for selecting services based on their address family to
ip_vs_service_get() and adjust the callers.

Signed-off-by: default avatarJulius Volz <juliusv@google.com>
Signed-off-by: default avatarSimon Horman <horms@verge.net.au>
parent b18610de

include/net/ip_vs.h

+2 −1
Original line number Diff line number Diff line
@@ -783,7 +783,8 @@ extern struct ip_vs_stats ip_vs_stats; 
extern const struct ctl_path net_vs_ctl_path[];



extern struct ip_vs_service *

ip_vs_service_get(__u32 fwmark, __u16 protocol, __be32 vaddr, __be16 vport);

ip_vs_service_get(int af, __u32 fwmark, __u16 protocol,

		  const union nf_inet_addr *vaddr, __be16 vport);



static inline void ip_vs_service_put(struct ip_vs_service *svc)

{

net/ipv4/ipvs/ip_vs_ctl.c

+13 −11
Original line number Diff line number Diff line
@@ -421,23 +421,24 @@ __ip_vs_svc_fwm_get(int af, __u32 fwmark) 
}



struct ip_vs_service *

ip_vs_service_get(__u32 fwmark, __u16 protocol, __be32 vaddr, __be16 vport)

ip_vs_service_get(int af, __u32 fwmark, __u16 protocol,

		  const union nf_inet_addr *vaddr, __be16 vport)

{

	struct ip_vs_service *svc;

	union nf_inet_addr _vaddr = { .ip = vaddr };



	read_lock(&__ip_vs_svc_lock);



	/*

	 *	Check the table hashed by fwmark first

	 */

	if (fwmark && (svc = __ip_vs_svc_fwm_get(AF_INET, fwmark)))

	if (fwmark && (svc = __ip_vs_svc_fwm_get(af, fwmark)))

		goto out;



	/*

	 *	Check the table hashed by <protocol,addr,port>

	 *	for "full" addressed entries

	 */

	svc = __ip_vs_service_get(AF_INET, protocol, &_vaddr, vport);

	svc = __ip_vs_service_get(af, protocol, vaddr, vport);



	if (svc == NULL

	    && protocol == IPPROTO_TCP
@@ -447,7 +448,7 @@ ip_vs_service_get(__u32 fwmark, __u16 protocol, __be32 vaddr, __be16 vport) 
		 * Check if ftp service entry exists, the packet

		 * might belong to FTP data connections.

		 */

		svc = __ip_vs_service_get(AF_INET, protocol, &_vaddr, FTPPORT);

		svc = __ip_vs_service_get(af, protocol, vaddr, FTPPORT);

	}



	if (svc == NULL
@@ -455,15 +456,15 @@ ip_vs_service_get(__u32 fwmark, __u16 protocol, __be32 vaddr, __be16 vport) 
		/*

		 * Check if the catch-all port (port zero) exists

		 */

		svc = __ip_vs_service_get(AF_INET, protocol, &_vaddr, 0);

		svc = __ip_vs_service_get(af, protocol, vaddr, 0);

	}



  out:

	read_unlock(&__ip_vs_svc_lock);



	IP_VS_DBG(9, "lookup service: fwm %u %s %u.%u.%u.%u:%u %s\n",

	IP_VS_DBG_BUF(9, "lookup service: fwm %u %s %s:%u %s\n",

		      fwmark, ip_vs_proto_name(protocol),

		  NIPQUAD(vaddr), ntohs(vport),

		      IP_VS_DBG_ADDR(af, vaddr), ntohs(vport),

		      svc ? "hit" : "not hit");



	return svc;
@@ -605,8 +606,9 @@ struct ip_vs_dest *ip_vs_find_dest(__be32 daddr, __be16 dport, 
{

	struct ip_vs_dest *dest;

	struct ip_vs_service *svc;

	union nf_inet_addr _vaddr = { .ip = vaddr };



	svc = ip_vs_service_get(0, protocol, vaddr, vport);

	svc = ip_vs_service_get(AF_INET, 0, protocol, &_vaddr, vport);

	if (!svc)

		return NULL;

	dest = ip_vs_lookup_dest(svc, daddr, dport);

net/ipv4/ipvs/ip_vs_proto_tcp.c

+6 −3
Original line number Diff line number Diff line
@@ -74,16 +74,19 @@ tcp_conn_schedule(struct sk_buff *skb, 
{

	struct ip_vs_service *svc;

	struct tcphdr _tcph, *th;

	struct ip_vs_iphdr iph;



	th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);

	ip_vs_fill_iphdr(AF_INET, skb_network_header(skb), &iph);



	th = skb_header_pointer(skb, iph.len, sizeof(_tcph), &_tcph);

	if (th == NULL) {

		*verdict = NF_DROP;

		return 0;

	}



	if (th->syn &&

	    (svc = ip_vs_service_get(skb->mark, ip_hdr(skb)->protocol,

				     ip_hdr(skb)->daddr, th->dest))) {

	    (svc = ip_vs_service_get(AF_INET, skb->mark, iph.protocol,

				     &iph.daddr, th->dest))) {

		if (ip_vs_todrop()) {

			/*

			 * It seems that we are very loaded.

net/ipv4/ipvs/ip_vs_proto_udp.c

+7 −4
Original line number Diff line number Diff line
@@ -80,16 +80,19 @@ udp_conn_schedule(struct sk_buff *skb, struct ip_vs_protocol *pp, 
{

	struct ip_vs_service *svc;

	struct udphdr _udph, *uh;

	struct ip_vs_iphdr iph;



	uh = skb_header_pointer(skb, ip_hdrlen(skb),

				sizeof(_udph), &_udph);

	ip_vs_fill_iphdr(AF_INET, skb_network_header(skb), &iph);



	uh = skb_header_pointer(skb, iph.len, sizeof(_udph), &_udph);

	if (uh == NULL) {

		*verdict = NF_DROP;

		return 0;

	}



	if ((svc = ip_vs_service_get(skb->mark, ip_hdr(skb)->protocol,

				     ip_hdr(skb)->daddr, uh->dest))) {

	svc = ip_vs_service_get(AF_INET, skb->mark, iph.protocol,

				&iph.daddr, uh->dest);

	if (svc) {

		if (ip_vs_todrop()) {

			/*

			 * It seems that we are very loaded.