提交 698365fa 编写于 作者: W WANG Cong 提交者: David S. Miller

net: clean up snmp stats code

commit 8f0ea0fe (snmp: reduce percpu needs by 50%)
reduced snmp array size to 1, so technically it doesn't have to be
an array any more. What's more, after the following commit:

	commit 933393f5
	Date:   Thu Dec 22 11:58:51 2011 -0600

	    percpu: Remove irqsafe_cpu_xxx variants

	    We simply say that regular this_cpu use must be safe regardless of
	    preemption and interrupt state.  That has no material change for x86
	    and s390 implementations of this_cpu operations.  However, arches that
	    do not provide their own implementation for this_cpu operations will
	    now get code generated that disables interrupts instead of preemption.

probably no arch wants to have SNMP_ARRAY_SZ == 2. At least after
almost 3 years, no one complains.

So, just convert the array to a single pointer and remove snmp_mib_init()
and snmp_mib_free() as well.

Cc: Christoph Lameter <cl@linux.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 d1f88a66
......@@ -196,27 +196,15 @@ void ip_send_unicast_reply(struct net *net, struct sk_buff *skb, __be32 daddr,
#define NET_ADD_STATS_BH(net, field, adnd) SNMP_ADD_STATS_BH((net)->mib.net_statistics, field, adnd)
#define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd)
unsigned long snmp_fold_field(void __percpu *mib[], int offt);
unsigned long snmp_fold_field(void __percpu *mib, int offt);
#if BITS_PER_LONG==32
u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t sync_off);
u64 snmp_fold_field64(void __percpu *mib, int offt, size_t sync_off);
#else
static inline u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_off)
static inline u64 snmp_fold_field64(void __percpu *mib, int offt, size_t syncp_off)
{
return snmp_fold_field(mib, offt);
}
#endif
int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align);
static inline void snmp_mib_free(void __percpu *ptr[SNMP_ARRAY_SZ])
{
int i;
BUG_ON(ptr == NULL);
for (i = 0; i < SNMP_ARRAY_SZ; i++) {
free_percpu(ptr[i]);
ptr[i] = NULL;
}
}
void inet_get_local_port_range(struct net *net, int *low, int *high);
......
......@@ -116,51 +116,49 @@ struct linux_xfrm_mib {
unsigned long mibs[LINUX_MIB_XFRMMAX];
};
#define SNMP_ARRAY_SZ 1
#define DEFINE_SNMP_STAT(type, name) \
__typeof__(type) __percpu *name[SNMP_ARRAY_SZ]
__typeof__(type) __percpu *name
#define DEFINE_SNMP_STAT_ATOMIC(type, name) \
__typeof__(type) *name
#define DECLARE_SNMP_STAT(type, name) \
extern __typeof__(type) __percpu *name[SNMP_ARRAY_SZ]
extern __typeof__(type) __percpu *name
#define SNMP_INC_STATS_BH(mib, field) \
__this_cpu_inc(mib[0]->mibs[field])
__this_cpu_inc(mib->mibs[field])
#define SNMP_INC_STATS_USER(mib, field) \
this_cpu_inc(mib[0]->mibs[field])
this_cpu_inc(mib->mibs[field])
#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) \
atomic_long_inc(&mib->mibs[field])
#define SNMP_INC_STATS(mib, field) \
this_cpu_inc(mib[0]->mibs[field])
this_cpu_inc(mib->mibs[field])
#define SNMP_DEC_STATS(mib, field) \
this_cpu_dec(mib[0]->mibs[field])
this_cpu_dec(mib->mibs[field])
#define SNMP_ADD_STATS_BH(mib, field, addend) \
__this_cpu_add(mib[0]->mibs[field], addend)
__this_cpu_add(mib->mibs[field], addend)
#define SNMP_ADD_STATS_USER(mib, field, addend) \
this_cpu_add(mib[0]->mibs[field], addend)
this_cpu_add(mib->mibs[field], addend)
#define SNMP_ADD_STATS(mib, field, addend) \
this_cpu_add(mib[0]->mibs[field], addend)
this_cpu_add(mib->mibs[field], addend)
/*
* Use "__typeof__(*mib[0]) *ptr" instead of "__typeof__(mib[0]) ptr"
* Use "__typeof__(*mib) *ptr" instead of "__typeof__(mib) ptr"
* to make @ptr a non-percpu pointer.
*/
#define SNMP_UPD_PO_STATS(mib, basefield, addend) \
do { \
__typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs; \
__typeof__(*mib->mibs) *ptr = mib->mibs; \
this_cpu_inc(ptr[basefield##PKTS]); \
this_cpu_add(ptr[basefield##OCTETS], addend); \
} while (0)
#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \
do { \
__typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs; \
__typeof__(*mib->mibs) *ptr = mib->mibs; \
__this_cpu_inc(ptr[basefield##PKTS]); \
__this_cpu_add(ptr[basefield##OCTETS], addend); \
} while (0)
......@@ -170,7 +168,7 @@ struct linux_xfrm_mib {
#define SNMP_ADD_STATS64_BH(mib, field, addend) \
do { \
__typeof__(*mib[0]) *ptr = __this_cpu_ptr((mib)[0]); \
__typeof__(*mib) *ptr = __this_cpu_ptr(mib); \
u64_stats_update_begin(&ptr->syncp); \
ptr->mibs[field] += addend; \
u64_stats_update_end(&ptr->syncp); \
......@@ -191,8 +189,8 @@ struct linux_xfrm_mib {
#define SNMP_INC_STATS64(mib, field) SNMP_ADD_STATS64(mib, field, 1)
#define SNMP_UPD_PO_STATS64_BH(mib, basefield, addend) \
do { \
__typeof__(*mib[0]) *ptr; \
ptr = __this_cpu_ptr((mib)[0]); \
__typeof__(*mib) *ptr; \
ptr = __this_cpu_ptr(mib); \
u64_stats_update_begin(&ptr->syncp); \
ptr->mibs[basefield##PKTS]++; \
ptr->mibs[basefield##OCTETS] += addend; \
......
......@@ -1084,14 +1084,15 @@ EXPORT_SYMBOL_GPL(dccp_shutdown);
static inline int dccp_mib_init(void)
{
return snmp_mib_init((void __percpu **)dccp_statistics,
sizeof(struct dccp_mib),
__alignof__(struct dccp_mib));
dccp_statistics = alloc_percpu(struct dccp_mib);
if (!dccp_statistics)
return -ENOMEM;
return 0;
}
static inline void dccp_mib_exit(void)
{
snmp_mib_free((void __percpu **)dccp_statistics);
free_percpu(dccp_statistics);
}
static int thash_entries;
......
......@@ -1476,22 +1476,20 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family,
}
EXPORT_SYMBOL_GPL(inet_ctl_sock_create);
unsigned long snmp_fold_field(void __percpu *mib[], int offt)
unsigned long snmp_fold_field(void __percpu *mib, int offt)
{
unsigned long res = 0;
int i, j;
int i;
for_each_possible_cpu(i) {
for (j = 0; j < SNMP_ARRAY_SZ; j++)
res += *(((unsigned long *) per_cpu_ptr(mib[j], i)) + offt);
}
for_each_possible_cpu(i)
res += *(((unsigned long *) per_cpu_ptr(mib, i)) + offt);
return res;
}
EXPORT_SYMBOL_GPL(snmp_fold_field);
#if BITS_PER_LONG==32
u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
u64 snmp_fold_field64(void __percpu *mib, int offt, size_t syncp_offset)
{
u64 res = 0;
int cpu;
......@@ -1502,7 +1500,7 @@ u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
u64 v;
unsigned int start;
bhptr = per_cpu_ptr(mib[0], cpu);
bhptr = per_cpu_ptr(mib, cpu);
syncp = (struct u64_stats_sync *)(bhptr + syncp_offset);
do {
start = u64_stats_fetch_begin_irq(syncp);
......@@ -1516,25 +1514,6 @@ u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
EXPORT_SYMBOL_GPL(snmp_fold_field64);
#endif
int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align)
{
BUG_ON(ptr == NULL);
ptr[0] = __alloc_percpu(mibsize, align);
if (!ptr[0])
return -ENOMEM;
#if SNMP_ARRAY_SZ == 2
ptr[1] = __alloc_percpu(mibsize, align);
if (!ptr[1]) {
free_percpu(ptr[0]);
ptr[0] = NULL;
return -ENOMEM;
}
#endif
return 0;
}
EXPORT_SYMBOL_GPL(snmp_mib_init);
#ifdef CONFIG_IP_MULTICAST
static const struct net_protocol igmp_protocol = {
.handler = igmp_rcv,
......@@ -1570,40 +1549,30 @@ static __net_init int ipv4_mib_init_net(struct net *net)
{
int i;
if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
sizeof(struct tcp_mib),
__alignof__(struct tcp_mib)) < 0)
net->mib.tcp_statistics = alloc_percpu(struct tcp_mib);
if (!net->mib.tcp_statistics)
goto err_tcp_mib;
if (snmp_mib_init((void __percpu **)net->mib.ip_statistics,
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
net->mib.ip_statistics = alloc_percpu(struct ipstats_mib);
if (!net->mib.ip_statistics)
goto err_ip_mib;
for_each_possible_cpu(i) {
struct ipstats_mib *af_inet_stats;
af_inet_stats = per_cpu_ptr(net->mib.ip_statistics[0], i);
af_inet_stats = per_cpu_ptr(net->mib.ip_statistics, i);
u64_stats_init(&af_inet_stats->syncp);
#if SNMP_ARRAY_SZ == 2
af_inet_stats = per_cpu_ptr(net->mib.ip_statistics[1], i);
u64_stats_init(&af_inet_stats->syncp);
#endif
}
if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
sizeof(struct linux_mib),
__alignof__(struct linux_mib)) < 0)
net->mib.net_statistics = alloc_percpu(struct linux_mib);
if (!net->mib.net_statistics)
goto err_net_mib;
if (snmp_mib_init((void __percpu **)net->mib.udp_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
net->mib.udp_statistics = alloc_percpu(struct udp_mib);
if (!net->mib.udp_statistics)
goto err_udp_mib;
if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
net->mib.udplite_statistics = alloc_percpu(struct udp_mib);
if (!net->mib.udplite_statistics)
goto err_udplite_mib;
if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics,
sizeof(struct icmp_mib),
__alignof__(struct icmp_mib)) < 0)
net->mib.icmp_statistics = alloc_percpu(struct icmp_mib);
if (!net->mib.icmp_statistics)
goto err_icmp_mib;
net->mib.icmpmsg_statistics = kzalloc(sizeof(struct icmpmsg_mib),
GFP_KERNEL);
......@@ -1614,17 +1583,17 @@ static __net_init int ipv4_mib_init_net(struct net *net)
return 0;
err_icmpmsg_mib:
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
free_percpu(net->mib.icmp_statistics);
err_icmp_mib:
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
free_percpu(net->mib.udplite_statistics);
err_udplite_mib:
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
free_percpu(net->mib.udp_statistics);
err_udp_mib:
snmp_mib_free((void __percpu **)net->mib.net_statistics);
free_percpu(net->mib.net_statistics);
err_net_mib:
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
free_percpu(net->mib.ip_statistics);
err_ip_mib:
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
free_percpu(net->mib.tcp_statistics);
err_tcp_mib:
return -ENOMEM;
}
......@@ -1632,12 +1601,12 @@ static __net_init int ipv4_mib_init_net(struct net *net)
static __net_exit void ipv4_mib_exit_net(struct net *net)
{
kfree(net->mib.icmpmsg_statistics);
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
snmp_mib_free((void __percpu **)net->mib.net_statistics);
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
free_percpu(net->mib.icmp_statistics);
free_percpu(net->mib.udplite_statistics);
free_percpu(net->mib.udp_statistics);
free_percpu(net->mib.net_statistics);
free_percpu(net->mib.ip_statistics);
free_percpu(net->mib.tcp_statistics);
}
static __net_initdata struct pernet_operations ipv4_mib_ops = {
......
......@@ -345,15 +345,15 @@ static void icmp_put(struct seq_file *seq)
for (i = 0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " Out%s", icmpmibmap[i].name);
seq_printf(seq, "\nIcmp: %lu %lu %lu",
snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INMSGS),
snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_INERRORS),
snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS));
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INMSGS),
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_INERRORS),
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_CSUMERRORS));
for (i = 0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
atomic_long_read(ptr + icmpmibmap[i].index));
seq_printf(seq, " %lu %lu",
snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
snmp_fold_field((void __percpu **) net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTMSGS),
snmp_fold_field(net->mib.icmp_statistics, ICMP_MIB_OUTERRORS));
for (i = 0; icmpmibmap[i].name != NULL; i++)
seq_printf(seq, " %lu",
atomic_long_read(ptr + (icmpmibmap[i].index | 0x100)));
......@@ -379,7 +379,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
BUILD_BUG_ON(offsetof(struct ipstats_mib, mibs) != 0);
for (i = 0; snmp4_ipstats_list[i].name != NULL; i++)
seq_printf(seq, " %llu",
snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
snmp_fold_field64(net->mib.ip_statistics,
snmp4_ipstats_list[i].entry,
offsetof(struct ipstats_mib, syncp)));
......@@ -395,11 +395,11 @@ 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 __percpu **)net->mib.tcp_statistics,
snmp_fold_field(net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
else
seq_printf(seq, " %lu",
snmp_fold_field((void __percpu **)net->mib.tcp_statistics,
snmp_fold_field(net->mib.tcp_statistics,
snmp4_tcp_list[i].entry));
}
......@@ -410,7 +410,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdp:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
snmp_fold_field((void __percpu **)net->mib.udp_statistics,
snmp_fold_field(net->mib.udp_statistics,
snmp4_udp_list[i].entry));
/* the UDP and UDP-Lite MIBs are the same */
......@@ -421,7 +421,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nUdpLite:");
for (i = 0; snmp4_udp_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
snmp_fold_field((void __percpu **)net->mib.udplite_statistics,
snmp_fold_field(net->mib.udplite_statistics,
snmp4_udp_list[i].entry));
seq_putc(seq, '\n');
......@@ -458,7 +458,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nTcpExt:");
for (i = 0; snmp4_net_list[i].name != NULL; i++)
seq_printf(seq, " %lu",
snmp_fold_field((void __percpu **)net->mib.net_statistics,
snmp_fold_field(net->mib.net_statistics,
snmp4_net_list[i].entry));
seq_puts(seq, "\nIpExt:");
......@@ -468,7 +468,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v)
seq_puts(seq, "\nIpExt:");
for (i = 0; snmp4_ipextstats_list[i].name != NULL; i++)
seq_printf(seq, " %llu",
snmp_fold_field64((void __percpu **)net->mib.ip_statistics,
snmp_fold_field64(net->mib.ip_statistics,
snmp4_ipextstats_list[i].entry,
offsetof(struct ipstats_mib, syncp)));
......
......@@ -275,19 +275,14 @@ static int snmp6_alloc_dev(struct inet6_dev *idev)
{
int i;
if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
idev->stats.ipv6 = alloc_percpu(struct ipstats_mib);
if (!idev->stats.ipv6)
goto err_ip;
for_each_possible_cpu(i) {
struct ipstats_mib *addrconf_stats;
addrconf_stats = per_cpu_ptr(idev->stats.ipv6[0], i);
addrconf_stats = per_cpu_ptr(idev->stats.ipv6, i);
u64_stats_init(&addrconf_stats->syncp);
#if SNMP_ARRAY_SZ == 2
addrconf_stats = per_cpu_ptr(idev->stats.ipv6[1], i);
u64_stats_init(&addrconf_stats->syncp);
#endif
}
......@@ -305,7 +300,7 @@ static int snmp6_alloc_dev(struct inet6_dev *idev)
err_icmpmsg:
kfree(idev->stats.icmpv6dev);
err_icmp:
snmp_mib_free((void __percpu **)idev->stats.ipv6);
free_percpu(idev->stats.ipv6);
err_ip:
return -ENOMEM;
}
......@@ -4363,7 +4358,7 @@ static inline void __snmp6_fill_statsdev(u64 *stats, atomic_long_t *mib,
memset(&stats[items], 0, pad);
}
static inline void __snmp6_fill_stats64(u64 *stats, void __percpu **mib,
static inline void __snmp6_fill_stats64(u64 *stats, void __percpu *mib,
int items, int bytes, size_t syncpoff)
{
int i;
......@@ -4383,7 +4378,7 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
{
switch (attrtype) {
case IFLA_INET6_STATS:
__snmp6_fill_stats64(stats, (void __percpu **)idev->stats.ipv6,
__snmp6_fill_stats64(stats, idev->stats.ipv6,
IPSTATS_MIB_MAX, bytes, offsetof(struct ipstats_mib, syncp));
break;
case IFLA_INET6_ICMP6STATS:
......
......@@ -123,7 +123,7 @@ static void snmp6_free_dev(struct inet6_dev *idev)
{
kfree(idev->stats.icmpv6msgdev);
kfree(idev->stats.icmpv6dev);
snmp_mib_free((void __percpu **)idev->stats.ipv6);
free_percpu(idev->stats.ipv6);
}
/* Nobody refers to this device, we may destroy it. */
......
......@@ -715,33 +715,25 @@ static int __net_init ipv6_init_mibs(struct net *net)
{
int i;
if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
net->mib.udp_stats_in6 = alloc_percpu(struct udp_mib);
if (!net->mib.udp_stats_in6)
return -ENOMEM;
if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
net->mib.udplite_stats_in6 = alloc_percpu(struct udp_mib);
if (!net->mib.udplite_stats_in6)
goto err_udplite_mib;
if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics,
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
net->mib.ipv6_statistics = alloc_percpu(struct ipstats_mib);
if (!net->mib.ipv6_statistics)
goto err_ip_mib;
for_each_possible_cpu(i) {
struct ipstats_mib *af_inet6_stats;
af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[0], i);
af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics, i);
u64_stats_init(&af_inet6_stats->syncp);
#if SNMP_ARRAY_SZ == 2
af_inet6_stats = per_cpu_ptr(net->mib.ipv6_statistics[1], i);
u64_stats_init(&af_inet6_stats->syncp);
#endif
}
if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics,
sizeof(struct icmpv6_mib),
__alignof__(struct icmpv6_mib)) < 0)
net->mib.icmpv6_statistics = alloc_percpu(struct icmpv6_mib);
if (!net->mib.icmpv6_statistics)
goto err_icmp_mib;
net->mib.icmpv6msg_statistics = kzalloc(sizeof(struct icmpv6msg_mib),
GFP_KERNEL);
......@@ -750,22 +742,22 @@ static int __net_init ipv6_init_mibs(struct net *net)
return 0;
err_icmpmsg_mib:
snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
free_percpu(net->mib.icmpv6_statistics);
err_icmp_mib:
snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
free_percpu(net->mib.ipv6_statistics);
err_ip_mib:
snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
free_percpu(net->mib.udplite_stats_in6);
err_udplite_mib:
snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
free_percpu(net->mib.udp_stats_in6);
return -ENOMEM;
}
static void ipv6_cleanup_mibs(struct net *net)
{
snmp_mib_free((void __percpu **)net->mib.udp_stats_in6);
snmp_mib_free((void __percpu **)net->mib.udplite_stats_in6);
snmp_mib_free((void __percpu **)net->mib.ipv6_statistics);
snmp_mib_free((void __percpu **)net->mib.icmpv6_statistics);
free_percpu(net->mib.udp_stats_in6);
free_percpu(net->mib.udplite_stats_in6);
free_percpu(net->mib.ipv6_statistics);
free_percpu(net->mib.icmpv6_statistics);
kfree(net->mib.icmpv6msg_statistics);
}
......
......@@ -201,7 +201,7 @@ static void snmp6_seq_show_item(struct seq_file *seq, void __percpu **pcpumib,
}
}
static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu **mib,
static void snmp6_seq_show_item64(struct seq_file *seq, void __percpu *mib,
const struct snmp_mib *itemlist, size_t syncpoff)
{
int i;
......@@ -215,7 +215,7 @@ static int snmp6_seq_show(struct seq_file *seq, void *v)
{
struct net *net = (struct net *)seq->private;
snmp6_seq_show_item64(seq, (void __percpu **)net->mib.ipv6_statistics,
snmp6_seq_show_item64(seq, net->mib.ipv6_statistics,
snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
snmp6_seq_show_item(seq, (void __percpu **)net->mib.icmpv6_statistics,
NULL, snmp6_icmp6_list);
......@@ -245,7 +245,7 @@ static int snmp6_dev_seq_show(struct seq_file *seq, void *v)
struct inet6_dev *idev = (struct inet6_dev *)seq->private;
seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
snmp6_seq_show_item64(seq, (void __percpu **)idev->stats.ipv6,
snmp6_seq_show_item64(seq, idev->stats.ipv6,
snmp6_ipstats_list, offsetof(struct ipstats_mib, syncp));
snmp6_seq_show_item(seq, NULL, idev->stats.icmpv6dev->mibs,
snmp6_icmp6_list);
......
......@@ -1100,14 +1100,15 @@ int sctp_register_pf(struct sctp_pf *pf, sa_family_t family)
static inline int init_sctp_mibs(struct net *net)
{
return snmp_mib_init((void __percpu **)net->sctp.sctp_statistics,
sizeof(struct sctp_mib),
__alignof__(struct sctp_mib));
net->sctp.sctp_statistics = alloc_percpu(struct sctp_mib);
if (!net->sctp.sctp_statistics)
return -ENOMEM;
return 0;
}
static inline void cleanup_sctp_mibs(struct net *net)
{
snmp_mib_free((void __percpu **)net->sctp.sctp_statistics);
free_percpu(net->sctp.sctp_statistics);
}
static void sctp_v4_pf_init(void)
......
......@@ -2783,21 +2783,19 @@ static struct notifier_block xfrm_dev_notifier = {
static int __net_init xfrm_statistics_init(struct net *net)
{
int rv;
if (snmp_mib_init((void __percpu **)net->mib.xfrm_statistics,
sizeof(struct linux_xfrm_mib),
__alignof__(struct linux_xfrm_mib)) < 0)
net->mib.xfrm_statistics = alloc_percpu(struct linux_xfrm_mib);
if (!net->mib.xfrm_statistics)
return -ENOMEM;
rv = xfrm_proc_init(net);
if (rv < 0)
snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
free_percpu(net->mib.xfrm_statistics);
return rv;
}
static void xfrm_statistics_fini(struct net *net)
{
xfrm_proc_fini(net);
snmp_mib_free((void __percpu **)net->mib.xfrm_statistics);
free_percpu(net->mib.xfrm_statistics);
}
#else
static int __net_init xfrm_statistics_init(struct net *net)
......
......@@ -54,8 +54,7 @@ static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
int i;
for (i = 0; xfrm_mib_list[i].name; i++)
seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
snmp_fold_field((void __percpu **)
net->mib.xfrm_statistics,
snmp_fold_field(net->mib.xfrm_statistics,
xfrm_mib_list[i].entry));
return 0;
}
......
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