/* * * SNMP MIB entries for the IP subsystem. * * Alan Cox * * We don't chose to implement SNMP in the kernel (this would * be silly as SNMP is a pain in the backside in places). We do * however need to collect the MIB statistics and export them * out of /proc (eventually) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * */ #ifndef _SNMP_H #define _SNMP_H #include #include #include /* * Mibs are stored in array of unsigned long. */ /* * struct snmp_mib{} * - list of entries for particular API (such as /proc/net/snmp) * - name of entries. */ struct snmp_mib { const char *name; int entry; }; #define SNMP_MIB_ITEM(_name,_entry) { \ .name = _name, \ .entry = _entry, \ } #define SNMP_MIB_SENTINEL { \ .name = NULL, \ .entry = 0, \ } /* * We use unsigned longs for most mibs but u64 for ipstats. */ #include /* IPstats */ #define IPSTATS_MIB_MAX __IPSTATS_MIB_MAX struct ipstats_mib { /* mibs[] must be first field of struct ipstats_mib */ u64 mibs[IPSTATS_MIB_MAX]; struct u64_stats_sync syncp; }; /* ICMP */ #define ICMP_MIB_MAX __ICMP_MIB_MAX struct icmp_mib { unsigned long mibs[ICMP_MIB_MAX]; }; #define ICMPMSG_MIB_MAX __ICMPMSG_MIB_MAX struct icmpmsg_mib { atomic_long_t mibs[ICMPMSG_MIB_MAX]; }; /* ICMP6 (IPv6-ICMP) */ #define ICMP6_MIB_MAX __ICMP6_MIB_MAX /* per network ns counters */ struct icmpv6_mib { unsigned long mibs[ICMP6_MIB_MAX]; }; /* per device counters, (shared on all cpus) */ struct icmpv6_mib_device { atomic_long_t mibs[ICMP6_MIB_MAX]; }; #define ICMP6MSG_MIB_MAX __ICMP6MSG_MIB_MAX /* per network ns counters */ struct icmpv6msg_mib { atomic_long_t mibs[ICMP6MSG_MIB_MAX]; }; /* per device counters, (shared on all cpus) */ struct icmpv6msg_mib_device { atomic_long_t mibs[ICMP6MSG_MIB_MAX]; }; /* TCP */ #define TCP_MIB_MAX __TCP_MIB_MAX struct tcp_mib { unsigned long mibs[TCP_MIB_MAX]; }; /* UDP */ #define UDP_MIB_MAX __UDP_MIB_MAX struct udp_mib { unsigned long mibs[UDP_MIB_MAX]; }; /* Linux */ #define LINUX_MIB_MAX __LINUX_MIB_MAX struct linux_mib { unsigned long mibs[LINUX_MIB_MAX]; }; /* Linux Xfrm */ #define LINUX_MIB_XFRMMAX __LINUX_MIB_XFRMMAX struct linux_xfrm_mib { unsigned long mibs[LINUX_MIB_XFRMMAX]; }; #define DEFINE_SNMP_STAT(type, name) \ __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 #define __SNMP_INC_STATS(mib, 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->mibs[field]) #define SNMP_DEC_STATS(mib, field) \ this_cpu_dec(mib->mibs[field]) #define __SNMP_ADD_STATS(mib, field, addend) \ __this_cpu_add(mib->mibs[field], addend) #define SNMP_ADD_STATS(mib, field, addend) \ this_cpu_add(mib->mibs[field], addend) #define SNMP_UPD_PO_STATS(mib, basefield, addend) \ do { \ __typeof__((mib->mibs) + 0) ptr = mib->mibs; \ this_cpu_inc(ptr[basefield##PKTS]); \ this_cpu_add(ptr[basefield##OCTETS], addend); \ } while (0) #define __SNMP_UPD_PO_STATS(mib, basefield, addend) \ do { \ __typeof__((mib->mibs) + 0) ptr = mib->mibs; \ __this_cpu_inc(ptr[basefield##PKTS]); \ __this_cpu_add(ptr[basefield##OCTETS], addend); \ } while (0) #if BITS_PER_LONG==32 #define __SNMP_ADD_STATS64(mib, field, addend) \ do { \ __typeof__(*mib) *ptr = raw_cpu_ptr(mib); \ u64_stats_update_begin(&ptr->syncp); \ ptr->mibs[field] += addend; \ u64_stats_update_end(&ptr->syncp); \ } while (0) #define SNMP_ADD_STATS64(mib, field, addend) \ do { \ local_bh_disable(); \ __SNMP_ADD_STATS64(mib, field, addend); \ local_bh_enable(); \ } while (0) #define __SNMP_INC_STATS64(mib, field) SNMP_ADD_STATS64(mib, field, 1) #define SNMP_INC_STATS64(mib, field) SNMP_ADD_STATS64(mib, field, 1) #define __SNMP_UPD_PO_STATS64(mib, basefield, addend) \ do { \ __typeof__(*mib) *ptr; \ ptr = raw_cpu_ptr((mib)); \ u64_stats_update_begin(&ptr->syncp); \ ptr->mibs[basefield##PKTS]++; \ ptr->mibs[basefield##OCTETS] += addend; \ u64_stats_update_end(&ptr->syncp); \ } while (0) #define SNMP_UPD_PO_STATS64(mib, basefield, addend) \ do { \ local_bh_disable(); \ __SNMP_UPD_PO_STATS64(mib, basefield, addend); \ local_bh_enable(); \ } while (0) #else #define __SNMP_INC_STATS64(mib, field) __SNMP_INC_STATS(mib, field) #define SNMP_INC_STATS64(mib, field) SNMP_INC_STATS(mib, field) #define SNMP_DEC_STATS64(mib, field) SNMP_DEC_STATS(mib, field) #define __SNMP_ADD_STATS64(mib, field, addend) __SNMP_ADD_STATS(mib, field, addend) #define SNMP_ADD_STATS64(mib, field, addend) SNMP_ADD_STATS(mib, field, addend) #define SNMP_UPD_PO_STATS64(mib, basefield, addend) SNMP_UPD_PO_STATS(mib, basefield, addend) #define __SNMP_UPD_PO_STATS64(mib, basefield, addend) __SNMP_UPD_PO_STATS(mib, basefield, addend) #endif #endif ation/cachetlb.txt?id2=868c97a846a73e937d835b09b8c885a69df50ec8'>diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
Diffstat (limited to 'Documentation/cachetlb.txt')