Commit 5e0f0435 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller

[IPV4]: Consolidate common SNMP code

This patch moves the SNMP code shared between IPv4/IPv6 from proc.c
into net/ipv4/af_inet.c.  This makes sense because these functions
aren't specific to /proc.

As a result we can again skip proc.o if /proc is disabled.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Acked-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bb7ec6df
...@@ -166,6 +166,7 @@ DECLARE_SNMP_STAT(struct linux_mib, net_statistics); ...@@ -166,6 +166,7 @@ DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
#define NET_ADD_STATS_BH(field, adnd) SNMP_ADD_STATS_BH(net_statistics, field, adnd) #define NET_ADD_STATS_BH(field, adnd) SNMP_ADD_STATS_BH(net_statistics, field, adnd)
#define NET_ADD_STATS_USER(field, adnd) SNMP_ADD_STATS_USER(net_statistics, field, adnd) #define NET_ADD_STATS_USER(field, adnd) SNMP_ADD_STATS_USER(net_statistics, field, adnd)
extern unsigned long snmp_fold_field(void *mib[], int offt);
extern int snmp_mib_init(void *ptr[2], size_t mibsize, size_t mibalign); extern int snmp_mib_init(void *ptr[2], size_t mibsize, size_t mibalign);
extern void snmp_mib_free(void *ptr[2]); extern void snmp_mib_free(void *ptr[2]);
......
...@@ -10,11 +10,11 @@ obj-y := route.o inetpeer.o protocol.o \ ...@@ -10,11 +10,11 @@ obj-y := route.o inetpeer.o protocol.o \
tcp_minisocks.o tcp_cong.o \ tcp_minisocks.o tcp_cong.o \
datagram.o raw.o udp.o udplite.o \ datagram.o raw.o udp.o udplite.o \
arp.o icmp.o devinet.o af_inet.o igmp.o \ arp.o icmp.o devinet.o af_inet.o igmp.o \
sysctl_net_ipv4.o fib_frontend.o fib_semantics.o \ sysctl_net_ipv4.o fib_frontend.o fib_semantics.o
proc.o
obj-$(CONFIG_IP_FIB_HASH) += fib_hash.o obj-$(CONFIG_IP_FIB_HASH) += fib_hash.o
obj-$(CONFIG_IP_FIB_TRIE) += fib_trie.o obj-$(CONFIG_IP_FIB_TRIE) += fib_trie.o
obj-$(CONFIG_PROC_FS) += proc.o
obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o
obj-$(CONFIG_IP_MROUTE) += ipmr.o obj-$(CONFIG_IP_MROUTE) += ipmr.o
obj-$(CONFIG_NET_IPIP) += ipip.o obj-$(CONFIG_NET_IPIP) += ipip.o
......
...@@ -1219,6 +1219,46 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features) ...@@ -1219,6 +1219,46 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, int features)
return segs; return segs;
} }
unsigned long snmp_fold_field(void *mib[], int offt)
{
unsigned long res = 0;
int i;
for_each_possible_cpu(i) {
res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
}
return res;
}
EXPORT_SYMBOL_GPL(snmp_fold_field);
int snmp_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
{
BUG_ON(ptr == NULL);
ptr[0] = __alloc_percpu(mibsize);
if (!ptr[0])
goto err0;
ptr[1] = __alloc_percpu(mibsize);
if (!ptr[1])
goto err1;
return 0;
err1:
free_percpu(ptr[0]);
ptr[0] = NULL;
err0:
return -ENOMEM;
}
EXPORT_SYMBOL_GPL(snmp_mib_init);
void snmp_mib_free(void *ptr[2])
{
BUG_ON(ptr == NULL);
free_percpu(ptr[0]);
free_percpu(ptr[1]);
ptr[0] = ptr[1] = NULL;
}
EXPORT_SYMBOL_GPL(snmp_mib_free);
#ifdef CONFIG_IP_MULTICAST #ifdef CONFIG_IP_MULTICAST
static struct net_protocol igmp_protocol = { static struct net_protocol igmp_protocol = {
.handler = igmp_rcv, .handler = igmp_rcv,
......
...@@ -45,7 +45,6 @@ ...@@ -45,7 +45,6 @@
#include <net/sock.h> #include <net/sock.h>
#include <net/raw.h> #include <net/raw.h>
#ifdef CONFIG_PROC_FS
static int fold_prot_inuse(struct proto *proto) static int fold_prot_inuse(struct proto *proto)
{ {
int res = 0; int res = 0;
...@@ -88,19 +87,6 @@ static const struct file_operations sockstat_seq_fops = { ...@@ -88,19 +87,6 @@ static const struct file_operations sockstat_seq_fops = {
.release = single_release, .release = single_release,
}; };
static unsigned long
fold_field(void *mib[], int offt)
{
unsigned long res = 0;
int i;
for_each_possible_cpu(i) {
res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
}
return res;
}
/* snmp items */ /* snmp items */
static const struct snmp_mib snmp4_ipstats_list[] = { static const struct snmp_mib snmp4_ipstats_list[] = {
SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES), SNMP_MIB_ITEM("InReceives", IPSTATS_MIB_INRECEIVES),
...@@ -267,8 +253,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v) ...@@ -267,8 +253,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
for (i = 0; snmp4_ipstats_list[i].name != NULL; i++) for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) ip_statistics, snmp_fold_field((void **)ip_statistics,
snmp4_ipstats_list[i].entry)); snmp4_ipstats_list[i].entry));
seq_puts(seq, "\nIcmp:"); seq_puts(seq, "\nIcmp:");
for (i = 0; snmp4_icmp_list[i].name != NULL; i++) for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
...@@ -277,8 +263,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v) ...@@ -277,8 +263,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nIcmp:"); seq_puts(seq, "\nIcmp:");
for (i = 0; snmp4_icmp_list[i].name != NULL; i++) for (i = 0; snmp4_icmp_list[i].name != NULL; i++)
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) icmp_statistics, snmp_fold_field((void **)icmp_statistics,
snmp4_icmp_list[i].entry)); snmp4_icmp_list[i].entry));
seq_puts(seq, "\nTcp:"); seq_puts(seq, "\nTcp:");
for (i = 0; snmp4_tcp_list[i].name != NULL; i++) for (i = 0; snmp4_tcp_list[i].name != NULL; i++)
...@@ -289,12 +275,12 @@ static int snmp_seq_show(struct seq_file *seq, void *v) ...@@ -289,12 +275,12 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
/* MaxConn field is signed, RFC 2012 */ /* MaxConn field is signed, RFC 2012 */
if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN) if (snmp4_tcp_list[i].entry == TCP_MIB_MAXCONN)
seq_printf(seq, " %ld", seq_printf(seq, " %ld",
fold_field((void **) tcp_statistics, snmp_fold_field((void **)tcp_statistics,
snmp4_tcp_list[i].entry)); snmp4_tcp_list[i].entry));
else else
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) tcp_statistics, snmp_fold_field((void **)tcp_statistics,
snmp4_tcp_list[i].entry)); snmp4_tcp_list[i].entry));
} }
seq_puts(seq, "\nUdp:"); seq_puts(seq, "\nUdp:");
...@@ -304,8 +290,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v) ...@@ -304,8 +290,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdp:"); seq_puts(seq, "\nUdp:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++) for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) udp_statistics, snmp_fold_field((void **)udp_statistics,
snmp4_udp_list[i].entry)); snmp4_udp_list[i].entry));
/* the UDP and UDP-Lite MIBs are the same */ /* the UDP and UDP-Lite MIBs are the same */
seq_puts(seq, "\nUdpLite:"); seq_puts(seq, "\nUdpLite:");
...@@ -315,8 +301,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v) ...@@ -315,8 +301,8 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdpLite:"); seq_puts(seq, "\nUdpLite:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++) for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) udplite_statistics, snmp_fold_field((void **)udplite_statistics,
snmp4_udp_list[i].entry) ); snmp4_udp_list[i].entry));
seq_putc(seq, '\n'); seq_putc(seq, '\n');
return 0; return 0;
...@@ -349,8 +335,8 @@ static int netstat_seq_show(struct seq_file *seq, void *v) ...@@ -349,8 +335,8 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nTcpExt:"); seq_puts(seq, "\nTcpExt:");
for (i = 0; snmp4_net_list[i].name != NULL; i++) for (i = 0; snmp4_net_list[i].name != NULL; i++)
seq_printf(seq, " %lu", seq_printf(seq, " %lu",
fold_field((void **) net_statistics, snmp_fold_field((void **)net_statistics,
snmp4_net_list[i].entry)); snmp4_net_list[i].entry));
seq_putc(seq, '\n'); seq_putc(seq, '\n');
return 0; return 0;
...@@ -391,30 +377,4 @@ int __init ip_misc_proc_init(void) ...@@ -391,30 +377,4 @@ int __init ip_misc_proc_init(void)
rc = -ENOMEM; rc = -ENOMEM;
goto out; goto out;
} }
#endif
int snmp_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
{
BUG_ON(ptr == NULL);
ptr[0] = __alloc_percpu(mibsize);
if (!ptr[0])
goto err0;
ptr[1] = __alloc_percpu(mibsize);
if (!ptr[1])
goto err1;
return 0;
err1:
free_percpu(ptr[0]);
ptr[0] = NULL;
err0:
return -ENOMEM;
}
void snmp_mib_free(void *ptr[2])
{
BUG_ON(ptr == NULL);
free_percpu(ptr[0]);
free_percpu(ptr[1]);
ptr[0] = ptr[1] = NULL;
}
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