projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
tcp: take care of truncations done by sk_filter()
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / net / snmp.h
CommitLineData
1da177e4
LT		 1/*
2 *
3 * SNMP MIB entries for the IP subsystem.
4 *
5 * Alan Cox <gw4pts@gw4pts.ampr.org>
6 *
7 * We don't chose to implement SNMP in the kernel (this would
8 * be silly as SNMP is a pain in the backside in places). We do
9 * however need to collect the MIB statistics and export them
10 * out of /proc (eventually)
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
16 *
1da177e4
LT		 17 */
18
19#ifndef _SNMP_H
20#define _SNMP_H
21
22#include <linux/cache.h>
23#include <linux/snmp.h>
d647b36a 24#include <linux/smp.h>
1da177e4
LT		 25
26/*
27 * Mibs are stored in array of unsigned long.
28 */
29/*
30 * struct snmp_mib{}
31 * - list of entries for particular API (such as /proc/net/snmp)
32 * - name of entries.
33 */
34struct snmp_mib {
5833929c 35 const char *name;
1da177e4
LT		 36 int entry;
37};
38
39#define SNMP_MIB_ITEM(_name,_entry) { \
40 .name = _name, \
41 .entry = _entry, \
42}
43
44#define SNMP_MIB_SENTINEL { \
45 .name = NULL, \
46 .entry = 0, \
47}
48
49/*
4ce3c183 50 * We use unsigned longs for most mibs but u64 for ipstats.
1da177e4 51 */
4ce3c183 52#include <linux/u64_stats_sync.h>
1da177e4 53
1da177e4
LT		 54/* IPstats */
55#define IPSTATS_MIB_MAX __IPSTATS_MIB_MAX
56struct ipstats_mib {
4ce3c183
ED		 57 /* mibs[] must be first field of struct ipstats_mib */
58 u64 mibs[IPSTATS_MIB_MAX];
59 struct u64_stats_sync syncp;
ec733b15 60};
1da177e4
LT		 61
62/* ICMP */
a9527a3b 63#define ICMP_MIB_MAX __ICMP_MIB_MAX
1da177e4
LT		 64struct icmp_mib {
65 unsigned long mibs[ICMP_MIB_MAX];
ec733b15 66};
1da177e4 67
96793b48
DS		 68#define ICMPMSG_MIB_MAX __ICMPMSG_MIB_MAX
69struct icmpmsg_mib {
acb32ba3 70 atomic_long_t mibs[ICMPMSG_MIB_MAX];
ec733b15 71};
96793b48 72
1da177e4
LT		 73/* ICMP6 (IPv6-ICMP) */
74#define ICMP6_MIB_MAX __ICMP6_MIB_MAX
be281e55 75/* per network ns counters */
1da177e4
LT		 76struct icmpv6_mib {
77 unsigned long mibs[ICMP6_MIB_MAX];
ec733b15 78};
be281e55
ED		 79/* per device counters, (shared on all cpus) */
80struct icmpv6_mib_device {
81 atomic_long_t mibs[ICMP6_MIB_MAX];
82};
1da177e4 83
14878f75 84#define ICMP6MSG_MIB_MAX __ICMP6MSG_MIB_MAX
be281e55 85/* per network ns counters */
14878f75 86struct icmpv6msg_mib {
2a24444f 87 atomic_long_t mibs[ICMP6MSG_MIB_MAX];
ec733b15 88};
be281e55
ED		 89/* per device counters, (shared on all cpus) */
90struct icmpv6msg_mib_device {
91 atomic_long_t mibs[ICMP6MSG_MIB_MAX];
92};
14878f75
DS		 93
94
1da177e4
LT		 95/* TCP */
96#define TCP_MIB_MAX __TCP_MIB_MAX
97struct tcp_mib {
98 unsigned long mibs[TCP_MIB_MAX];
ec733b15 99};
1da177e4
LT		 100
101/* UDP */
102#define UDP_MIB_MAX __UDP_MIB_MAX
103struct udp_mib {
104 unsigned long mibs[UDP_MIB_MAX];
ec733b15 105};
1da177e4 106
1da177e4
LT		 107/* Linux */
108#define LINUX_MIB_MAX __LINUX_MIB_MAX
109struct linux_mib {
110 unsigned long mibs[LINUX_MIB_MAX];
111};
112
558f82ef
MN		 113/* Linux Xfrm */
114#define LINUX_MIB_XFRMMAX __LINUX_MIB_XFRMMAX
115struct linux_xfrm_mib {
116 unsigned long mibs[LINUX_MIB_XFRMMAX];
117};
1da177e4 118
8f0ea0fe
ED		 119#define SNMP_ARRAY_SZ 1
120
1da177e4 121#define DEFINE_SNMP_STAT(type, name) \
8f0ea0fe 122 __typeof__(type) __percpu *name[SNMP_ARRAY_SZ]
be281e55
ED		 123#define DEFINE_SNMP_STAT_ATOMIC(type, name) \
124 __typeof__(type) *name
1da177e4 125#define DECLARE_SNMP_STAT(type, name) \
8f0ea0fe 126 extern __typeof__(type) __percpu *name[SNMP_ARRAY_SZ]
1da177e4 127
4eb41d10
CL		 128#define SNMP_INC_STATS_BH(mib, field) \
129 __this_cpu_inc(mib[0]->mibs[field])
8f0ea0fe 130
4eb41d10 131#define SNMP_INC_STATS_USER(mib, field) \
933393f5 132 this_cpu_inc(mib[0]->mibs[field])
8f0ea0fe 133
be281e55
ED		 134#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) \
135 atomic_long_inc(&mib->mibs[field])
8f0ea0fe 136
4eb41d10 137#define SNMP_INC_STATS(mib, field) \
933393f5 138 this_cpu_inc(mib[0]->mibs[field])
8f0ea0fe 139
4eb41d10 140#define SNMP_DEC_STATS(mib, field) \
933393f5 141 this_cpu_dec(mib[0]->mibs[field])
8f0ea0fe 142
4eb41d10
CL		 143#define SNMP_ADD_STATS_BH(mib, field, addend) \
144 __this_cpu_add(mib[0]->mibs[field], addend)
8f0ea0fe 145
4eb41d10 146#define SNMP_ADD_STATS_USER(mib, field, addend) \
933393f5 147 this_cpu_add(mib[0]->mibs[field], addend)
8f0ea0fe 148
aa2ea058 149#define SNMP_ADD_STATS(mib, field, addend) \
933393f5 150 this_cpu_add(mib[0]->mibs[field], addend)
7d720c3e
TH		 151/*
152 * Use "__typeof__(*mib[0]) *ptr" instead of "__typeof__(mib[0]) ptr"
153 * to make @ptr a non-percpu pointer.
154 */
edf391ff
NH		 155#define SNMP_UPD_PO_STATS(mib, basefield, addend) \
156 do { \
d25398df
ED		 157 __typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs; \
158 this_cpu_inc(ptr[basefield##PKTS]); \
159 this_cpu_add(ptr[basefield##OCTETS], addend); \
edf391ff
NH		 160 } while (0)
161#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \
162 do { \
d25398df
ED		 163 __typeof__(*mib[0]->mibs) *ptr = mib[0]->mibs; \
164 __this_cpu_inc(ptr[basefield##PKTS]); \
165 __this_cpu_add(ptr[basefield##OCTETS], addend); \
edf391ff 166 } while (0)
4ce3c183
ED		 167
168
169#if BITS_PER_LONG==32
170
171#define SNMP_ADD_STATS64_BH(mib, field, addend) \
172 do { \
173 __typeof__(*mib[0]) *ptr = __this_cpu_ptr((mib)[0]); \
174 u64_stats_update_begin(&ptr->syncp); \
175 ptr->mibs[field] += addend; \
176 u64_stats_update_end(&ptr->syncp); \
177 } while (0)
8f0ea0fe 178
4ce3c183
ED		 179#define SNMP_ADD_STATS64_USER(mib, field, addend) \
180 do { \
8f0ea0fe
ED		 181 local_bh_disable(); \
182 SNMP_ADD_STATS64_BH(mib, field, addend); \
183 local_bh_enable(); \
4ce3c183 184 } while (0)
8f0ea0fe 185
4ce3c183 186#define SNMP_ADD_STATS64(mib, field, addend) \
8f0ea0fe
ED		 187 SNMP_ADD_STATS64_USER(mib, field, addend)
188
4ce3c183
ED		 189#define SNMP_INC_STATS64_BH(mib, field) SNMP_ADD_STATS64_BH(mib, field, 1)
190#define SNMP_INC_STATS64_USER(mib, field) SNMP_ADD_STATS64_USER(mib, field, 1)
191#define SNMP_INC_STATS64(mib, field) SNMP_ADD_STATS64(mib, field, 1)
4ce3c183
ED		 192#define SNMP_UPD_PO_STATS64_BH(mib, basefield, addend) \
193 do { \
194 __typeof__(*mib[0]) *ptr; \
20246a80 195 ptr = __this_cpu_ptr((mib)[0]); \
4ce3c183
ED		 196 u64_stats_update_begin(&ptr->syncp); \
197 ptr->mibs[basefield##PKTS]++; \
198 ptr->mibs[basefield##OCTETS] += addend; \
199 u64_stats_update_end(&ptr->syncp); \
200 } while (0)
8f0ea0fe
ED		 201#define SNMP_UPD_PO_STATS64(mib, basefield, addend) \
202 do { \
203 local_bh_disable(); \
204 SNMP_UPD_PO_STATS64_BH(mib, basefield, addend); \
205 local_bh_enable(); \
206 } while (0)
4ce3c183
ED		 207#else
208#define SNMP_INC_STATS64_BH(mib, field) SNMP_INC_STATS_BH(mib, field)
209#define SNMP_INC_STATS64_USER(mib, field) SNMP_INC_STATS_USER(mib, field)
210#define SNMP_INC_STATS64(mib, field) SNMP_INC_STATS(mib, field)
211#define SNMP_DEC_STATS64(mib, field) SNMP_DEC_STATS(mib, field)
212#define SNMP_ADD_STATS64_BH(mib, field, addend) SNMP_ADD_STATS_BH(mib, field, addend)
213#define SNMP_ADD_STATS64_USER(mib, field, addend) SNMP_ADD_STATS_USER(mib, field, addend)
214#define SNMP_ADD_STATS64(mib, field, addend) SNMP_ADD_STATS(mib, field, addend)
215#define SNMP_UPD_PO_STATS64(mib, basefield, addend) SNMP_UPD_PO_STATS(mib, basefield, addend)
216#define SNMP_UPD_PO_STATS64_BH(mib, basefield, addend) SNMP_UPD_PO_STATS_BH(mib, basefield, addend)
217#endif
218
1da177e4 219#endif
kernel source for telekom puls (alcatel/mediatek)