netdev - ipvs 05/05: zero usvc and udest

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Date:	Tue, 15 Dec 2009 17:14:33 +0100 (MET)
From:	Patrick McHardy <kaber@...sh.net>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>,
	netfilter-devel@...r.kernel.org
Subject: ipvs 05/05: zero usvc and udest

commit 258c889362aa95d0ab534b38ce8c15d3009705b1
Author: Simon Horman <horms@...ge.net.au>
Date:   Tue Dec 15 17:01:25 2009 +0100

    ipvs: zero usvc and udest
    
    Make sure that any otherwise uninitialised fields of usvc are zero.
    
    This has been obvserved to cause a problem whereby the port of
    fwmark services may end up as a non-zero value which causes
    scheduling of a destination server to fail for persisitent services.
    
    As observed by Deon van der Merwe <dvdm@...teq.co.za>.
    This fix suggested by Julian Anastasov <ja@....bg>.
    
    For good measure also zero udest.
    
    Cc: Deon van der Merwe <dvdm@...teq.co.za>
    Acked-by: Julian Anastasov <ja@....bg>
    Signed-off-by: Simon Horman <horms@...ge.net.au>
    Cc: stable@...nel.org
    Signed-off-by: Patrick McHardy <kaber@...sh.net>

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index e55a686..6bde12d 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -2714,6 +2714,8 @@ static int ip_vs_genl_parse_service(struct ip_vs_service_user_kern *usvc,
 	if (!(nla_af && (nla_fwmark || (nla_port && nla_protocol && nla_addr))))
 		return -EINVAL;
 
+	memset(usvc, 0, sizeof(*usvc));
+
 	usvc->af = nla_get_u16(nla_af);
 #ifdef CONFIG_IP_VS_IPV6
 	if (usvc->af != AF_INET && usvc->af != AF_INET6)
@@ -2901,6 +2903,8 @@ static int ip_vs_genl_parse_dest(struct ip_vs_dest_user_kern *udest,
 	if (!(nla_addr && nla_port))
 		return -EINVAL;
 
+	memset(udest, 0, sizeof(*udest));
+
 	nla_memcpy(&udest->addr, nla_addr, sizeof(udest->addr));
 	udest->port = nla_get_u16(nla_port);
 
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