Dave Thaler 0e133a1337 bpf, docs: Define signed modulo as using truncated division ... There's different mathematical definitions (truncated, floored, rounded, etc.) and different languages have chosen different definitions [0][1]. E.g., languages/libraries that follow Knuth use a different mathematical definition than C uses. This patch specifies which definition BPF uses, as verified by Eduard [2] and others. [0] https://en.wikipedia.org/wiki/Modulo#Variants_of_the_definition [1] https://torstencurdt.com/tech/posts/modulo-of-negative-numbers/ [2] https://lore.kernel.org/bpf/57e6fefadaf3b2995bb259fa8e711c7220ce5290.camel@gmail.com/ Signed-off-by: Dave Thaler <dthaler@microsoft.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: David Vernet <void@manifault.com> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20231017203020.1500-1-dthaler1968@googlemail.com		2023-10-19 01:36:12 +02:00
..
libbpf	documentation/bpf: Document cgroup unix socket address hooks	2023-10-11 17:27:55 -07:00
standardization	bpf, docs: Define signed modulo as using truncated division	2023-10-19 01:36:12 +02:00
bpf_design_QA.rst	docs/bpf: Add documentation for new instructions	2023-07-27 18:54:17 -07:00
bpf_devel_QA.rst	bpf: Replace deprecated -target with --target= for Clang	2023-06-29 15:46:17 +02:00
bpf_iterators.rst	bpf, docs: BPF Iterator Document	2023-06-22 19:44:22 +02:00
bpf_licensing.rst
bpf_prog_run.rst
btf.rst	docs/bpf: Fix "file doesn't exist" warnings in {llvm_reloc,btf}.rst	2023-09-01 15:56:48 +02:00
clang-notes.rst	bpf, docs: Explain helper functions	2023-03-10 13:02:00 -08:00
classic_vs_extended.rst
cpumasks.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
drgn.rst
faq.rst
graph_ds_impl.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
helpers.rst
index.rst	bpf, docs: Move linux-notes.rst to root bpf docs tree	2023-08-30 16:35:44 +02:00
kfuncs.rst	bpf, docs: Document existing macros instead of deprecated	2023-06-22 19:47:32 +02:00
linux-notes.rst	bpf, docs: Move linux-notes.rst to root bpf docs tree	2023-08-30 16:35:44 +02:00
llvm_reloc.rst	docs/bpf: Fix "file doesn't exist" warnings in {llvm_reloc,btf}.rst	2023-09-01 15:56:48 +02:00
map_array.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_bloom_filter.rst	docs/bpf: Document BPF_MAP_TYPE_BLOOM_FILTER	2022-11-23 22:47:32 +01:00
map_cgroup_storage.rst	Remove duplicate words inside documentation	2022-09-27 13:21:43 -06:00
map_cgrp_storage.rst	docs/bpf: Add documentation for new cgroup local storage	2022-10-25 23:19:20 -07:00
map_cpumap.rst	docs/bpf: Fix sphinx warnings for cpumap	2022-11-23 22:38:53 +01:00
map_devmap.rst	docs/bpf: Fix sphinx warnings for devmap	2022-11-23 22:40:27 +01:00
map_hash.rst	docs/bpf: Add LRU internals description and graph	2023-04-27 14:20:44 +02:00
map_lpm_trie.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_lru_hash_update.dot	docs/bpf: Add LRU internals description and graph	2023-04-27 14:20:44 +02:00
map_of_maps.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_queue_stack.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_sk_storage.rst	docs/bpf: Reword docs for BPF_MAP_TYPE_SK_STORAGE	2022-12-14 18:35:41 +01:00
map_sockmap.rst	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
map_xskmap.rst	Documentation: bpf: correct spelling	2023-01-28 12:22:20 -08:00
maps.rst	bpf, docs: Fix final bpf docs build failure	2023-03-02 22:36:10 -08:00
other.rst	bpf, documentation: Add graph documentation for non-owning refs	2023-02-13 19:40:53 -08:00
prog_cgroup_sockopt.rst	bpf: Document EFAULT changes for sockopt	2023-05-13 16:55:46 -07:00
prog_cgroup_sysctl.rst
prog_flow_dissector.rst	docs/bpf: update out-of-date doc in BPF flow dissector	2023-09-13 14:22:57 -07:00
prog_lsm.rst	lsm: move hook comments docs to security/security.c	2023-04-28 11:58:34 -04:00
prog_sk_lookup.rst
programs.rst	docs/bpf: Add table of BPF program types to libbpf docs	2022-11-23 13:31:20 -08:00
redirect.rst	bpf, docs: DEVMAPs and XDP_REDIRECT	2022-11-18 23:16:31 +01:00
ringbuf.rst	Documentation: bpf: correct spelling	2023-01-28 12:22:20 -08:00
s390.rst
syscall_api.rst
test_debug.rst
verifier.rst	docs/bpf: Add description of register liveness tracking algorithm	2023-02-02 20:21:59 -08:00