[IPVS]: Fix sysctl warnings about missing strategy

Running the latest git code I get the following messages during boot:
sysctl table check failed: /net/ipv4/vs/drop_entry .3.5.21.4 Missing strategy
[...]		  
sysctl table check failed: /net/ipv4/vs/drop_packet .3.5.21.5 Missing strategy
[...]
sysctl table check failed: /net/ipv4/vs/secure_tcp .3.5.21.6 Missing strategy
[...]
sysctl table check failed: /net/ipv4/vs/sync_threshold .3.5.21.24 Missing strategy

I removed the binary sysctl handler for those messages and also removed
the definitions in ip_vs.h. The alternative would be to implement a 
proper strategy handler, but syscall sysctl is deprecated.

There are other sysctl definitions that are commented out or work with 
the default sysctl_data strategy. I did not touch these. 
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Acked-by: NSimon Horman <horms@verge.net.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/ip_vs.h

@@ -336,9 +336,6 @@ enum {
 	NET_IPV4_VS_DEBUG_LEVEL=1,
 	NET_IPV4_VS_AMEMTHRESH=2,
 	NET_IPV4_VS_AMDROPRATE=3,
-	NET_IPV4_VS_DROP_ENTRY=4,
-	NET_IPV4_VS_DROP_PACKET=5,
-	NET_IPV4_VS_SECURE_TCP=6,
 	NET_IPV4_VS_TO_ES=7,
 	NET_IPV4_VS_TO_SS=8,
 	NET_IPV4_VS_TO_SR=9,
@@ -355,7 +352,6 @@ enum {
 	NET_IPV4_VS_LBLCR_EXPIRE=20,
 	NET_IPV4_VS_CACHE_BYPASS=22,
 	NET_IPV4_VS_EXPIRE_NODEST_CONN=23,
-	NET_IPV4_VS_SYNC_THRESHOLD=24,
 	NET_IPV4_VS_NAT_ICMP_SEND=25,
 	NET_IPV4_VS_EXPIRE_QUIESCENT_TEMPLATE=26,
 	NET_IPV4_VS_LAST

kernel/sysctl_check.c

@@ -242,9 +242,6 @@ static struct trans_ctl_table trans_net_ipv4_vs_table[] = {
 	{ NET_IPV4_VS_AMEMTHRESH,	"amemthresh" },
 	{ NET_IPV4_VS_DEBUG_LEVEL,	"debug_level" },
 	{ NET_IPV4_VS_AMDROPRATE,	"am_droprate" },
-	{ NET_IPV4_VS_DROP_ENTRY,	"drop_entry" },
-	{ NET_IPV4_VS_DROP_PACKET,	"drop_packet" },
-	{ NET_IPV4_VS_SECURE_TCP,	"secure_tcp" },
 	{ NET_IPV4_VS_TO_ES,		"timeout_established" },
 	{ NET_IPV4_VS_TO_SS,		"timeout_synsent" },
 	{ NET_IPV4_VS_TO_SR,		"timeout_synrecv" },
@@ -260,7 +257,6 @@ static struct trans_ctl_table trans_net_ipv4_vs_table[] = {
 	{ NET_IPV4_VS_CACHE_BYPASS,	"cache_bypass" },
 	{ NET_IPV4_VS_EXPIRE_NODEST_CONN,	"expire_nodest_conn" },
 	{ NET_IPV4_VS_EXPIRE_QUIESCENT_TEMPLATE,	"expire_quiescent_template" },
-	{ NET_IPV4_VS_SYNC_THRESHOLD,		"sync_threshold" },
 	{ NET_IPV4_VS_NAT_ICMP_SEND,	"nat_icmp_send" },
 	{ NET_IPV4_VS_LBLC_EXPIRE,		"lblc_expiration" },
 	{ NET_IPV4_VS_LBLCR_EXPIRE,		"lblcr_expiration" },

net/ipv4/ipvs/ip_vs_ctl.c

@@ -1450,7 +1450,6 @@ static struct ctl_table vs_vars[] = {
 		.proc_handler	= &proc_dointvec,
 	},
 	{
-		.ctl_name	= NET_IPV4_VS_DROP_ENTRY,
 		.procname	= "drop_entry",
 		.data		= &sysctl_ip_vs_drop_entry,
 		.maxlen		= sizeof(int),
@@ -1458,7 +1457,6 @@ static struct ctl_table vs_vars[] = {
 		.proc_handler	= &proc_do_defense_mode,
 	},
 	{
-		.ctl_name	= NET_IPV4_VS_DROP_PACKET,
 		.procname	= "drop_packet",
 		.data		= &sysctl_ip_vs_drop_packet,
 		.maxlen		= sizeof(int),
@@ -1466,7 +1464,6 @@ static struct ctl_table vs_vars[] = {
 		.proc_handler	= &proc_do_defense_mode,
 	},
 	{
-		.ctl_name	= NET_IPV4_VS_SECURE_TCP,
 		.procname	= "secure_tcp",
 		.data		= &sysctl_ip_vs_secure_tcp,
 		.maxlen		= sizeof(int),
@@ -1596,7 +1593,6 @@ static struct ctl_table vs_vars[] = {
 		.proc_handler	= &proc_dointvec,
 	},
 	{
-		.ctl_name	= NET_IPV4_VS_SYNC_THRESHOLD,
 		.procname	= "sync_threshold",
 		.data		= &sysctl_ip_vs_sync_threshold,
 		.maxlen		= sizeof(sysctl_ip_vs_sync_threshold),