linux/include
Yonghong Song bc4f0548f6 bpf: Compute bpf_skc_to_*() helper socket btf ids at build time
Currently, socket types (struct tcp_sock, udp_sock, etc.)
used by bpf_skc_to_*() helpers are computed when vmlinux_btf
is first built in the kernel.

Commit 5a2798ab32
("bpf: Add BTF_ID_LIST/BTF_ID/BTF_ID_UNUSED macros")
implemented a mechanism to compute btf_ids at kernel build
time which can simplify kernel implementation and reduce
runtime overhead by removing in-kernel btf_id calculation.
This patch did exactly this, removing in-kernel btf_id
computation and utilizing build-time btf_id computation.

If CONFIG_DEBUG_INFO_BTF is not defined, BTF_ID_LIST will
define an array with size of 5, which is not enough for
btf_sock_ids. So define its own static array if
CONFIG_DEBUG_INFO_BTF is not defined.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200720163358.1393023-1-yhs@fb.com
2020-07-21 13:26:26 -07:00
..
acpi Merge branch 'acpica' 2020-06-10 17:27:28 +02:00
asm-generic Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-07-13 18:04:05 -07:00
clocksource
crypto crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() 2020-06-18 17:09:54 +10:00
drm drm/edid: Replace zero-length array with flexible-array 2020-06-15 23:08:31 -05:00
dt-bindings - qcom : 2020-06-11 12:42:14 -07:00
keys RxRPC: Replace zero-length array with flexible-array 2020-06-15 23:08:32 -05:00
kunit
kvm
linux bpf: Compute bpf_skc_to_*() helper socket btf ids at build time 2020-07-21 13:26:26 -07:00
math-emu
media media updates for v5.8-rc1 2020-06-13 13:09:38 -07:00
misc
net bpf: cpumap: Implement XDP_REDIRECT for eBPF programs attached to map entries 2020-07-16 17:00:32 +02:00
pcmcia
ras
rdma
scsi
soc net: mscc: ocelot: extend watermark encoding function 2020-07-13 17:40:02 -07:00
sound ALSA: compress: fix partial_drain completion state 2020-07-07 11:52:18 +02:00
target scsi: target: Rename target_setup_cmd_from_cdb() to target_cmd_parse_cdb() 2020-06-09 21:57:26 -04:00
trace bpf: cpumap: Implement XDP_REDIRECT for eBPF programs attached to map entries 2020-07-16 17:00:32 +02:00
uapi bpf: Introduce SK_LOOKUP program type with a dedicated attach point 2020-07-17 20:18:16 -07:00
vdso
video
xen xen: netif.h: add a new extra type for XDP 2020-07-01 15:25:14 -07:00