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Commit 57ef42d5 authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by David S. Miller
Browse files

mib: put tcp statistics on struct net 



Proc temporary uses stats from init_net.

BTW, TCP_XXX_STATS are beautiful (w/o do { } while (0) facing) again :)

Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9b4661bd

include/net/netns/mib.h

+1 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
#include <net/snmp.h>



struct netns_mib {

	DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);

};



#endif

include/net/tcp.h

+4 −5
Original line number Diff line number Diff line
@@ -265,11 +265,10 @@ static inline int tcp_too_many_orphans(struct sock *sk, int num) 


extern struct proto tcp_prot;



DECLARE_SNMP_STAT(struct tcp_mib, tcp_statistics);

#define TCP_INC_STATS(net, field)	do { (void)net; SNMP_INC_STATS(tcp_statistics, field); } while (0)

#define TCP_INC_STATS_BH(net, field)	do { (void)net; SNMP_INC_STATS_BH(tcp_statistics, field); } while (0)

#define TCP_DEC_STATS(net, field)	do { (void)net; SNMP_DEC_STATS(tcp_statistics, field); } while (0)

#define TCP_ADD_STATS_USER(net, field, val) do { (void)net; SNMP_ADD_STATS_USER(tcp_statistics, field, val); } while (0)

#define TCP_INC_STATS(net, field)	SNMP_INC_STATS((net)->mib.tcp_statistics, field)

#define TCP_INC_STATS_BH(net, field)	SNMP_INC_STATS_BH((net)->mib.tcp_statistics, field)

#define TCP_DEC_STATS(net, field)	SNMP_DEC_STATS((net)->mib.tcp_statistics, field)

#define TCP_ADD_STATS_USER(net, field, val) SNMP_ADD_STATS_USER((net)->mib.tcp_statistics, field, val)



extern void			tcp_v4_err(struct sk_buff *skb, u32);

net/ipv4/af_inet.c

+9 −7
Original line number Diff line number Diff line
@@ -1342,11 +1342,20 @@ static struct net_protocol icmp_protocol = { 


static __net_init int ipv4_mib_init_net(struct net *net)

{

	if (snmp_mib_init((void **)net->mib.tcp_statistics,

			  sizeof(struct tcp_mib)) < 0)

		goto err_tcp_mib;



	tcp_mib_init(net);

	return 0;



err_tcp_mib:

	return -ENOMEM;

}



static __net_exit void ipv4_mib_exit_net(struct net *net)

{

	snmp_mib_free((void **)net->mib.tcp_statistics);

}



static __net_initdata struct pernet_operations ipv4_mib_ops = {
@@ -1368,9 +1377,6 @@ static int __init init_ipv4_mibs(void) 
	if (snmp_mib_init((void **)icmpmsg_statistics,

			  sizeof(struct icmpmsg_mib)) < 0)

		goto err_icmpmsg_mib;

	if (snmp_mib_init((void **)tcp_statistics,

			  sizeof(struct tcp_mib)) < 0)

		goto err_tcp_mib;

	if (snmp_mib_init((void **)udp_statistics,

			  sizeof(struct udp_mib)) < 0)

		goto err_udp_mib;
@@ -1378,8 +1384,6 @@ static int __init init_ipv4_mibs(void) 
			  sizeof(struct udp_mib)) < 0)

		goto err_udplite_mib;



	tcp_mib_init(&init_net);



	if (register_pernet_subsys(&ipv4_mib_ops))

		goto err_net;
@@ -1390,8 +1394,6 @@ static int __init init_ipv4_mibs(void) 
err_udplite_mib:

	snmp_mib_free((void **)udp_statistics);

err_udp_mib:

	snmp_mib_free((void **)tcp_statistics);

err_tcp_mib:

	snmp_mib_free((void **)icmpmsg_statistics);

err_icmpmsg_mib:

	snmp_mib_free((void **)icmp_statistics);

net/ipv4/proc.c

+2 −2
Original line number Diff line number Diff line
@@ -359,11 +359,11 @@ static int snmp_seq_show(struct seq_file *seq, void *v) 
		/* MaxConn field is signed, RFC 2012 */

		if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)

			seq_printf(seq, " %ld",

				   snmp_fold_field((void **)tcp_statistics,

				   snmp_fold_field((void **)init_net.mib.tcp_statistics,

						   snmp4_tcp_list[i].entry));

		else

			seq_printf(seq, " %lu",

				   snmp_fold_field((void **)tcp_statistics,

				   snmp_fold_field((void **)init_net.mib.tcp_statistics,

						   snmp4_tcp_list[i].entry));

	}

net/ipv4/tcp.c

+0 −3
Original line number Diff line number Diff line
@@ -277,8 +277,6 @@ 


int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;



DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics) __read_mostly;



atomic_t tcp_orphan_count = ATOMIC_INIT(0);



EXPORT_SYMBOL_GPL(tcp_orphan_count);
@@ -2802,4 +2800,3 @@ EXPORT_SYMBOL(tcp_splice_read); 
EXPORT_SYMBOL(tcp_sendpage);

EXPORT_SYMBOL(tcp_setsockopt);

EXPORT_SYMBOL(tcp_shutdown);
 
EXPORT_SYMBOL(tcp_statistics);