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authorJiri Olsa <jolsa@kernel.org>2020-07-11 23:53:24 +0200
committerAlexei Starovoitov <ast@kernel.org>2020-07-13 10:42:02 -0700
commitc9a0f3b85e09dd16665b639cb884490410619434 (patch)
treed0f83e40d55fa26ed0b96aee69fcb66fc521be3f /net
parent5a2798ab32ba2952cfe25701ee460bccbd434c75 (diff)
bpf: Resolve BTF IDs in vmlinux image
Using BTF_ID_LIST macro to define lists for several helpers using BTF arguments. And running resolve_btfids on vmlinux elf object during linking, so the .BTF_ids section gets the IDs resolved. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Tested-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200711215329.41165-5-jolsa@kernel.org
Diffstat (limited to 'net')
-rw-r--r--net/core/filter.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c
index ddcc0d6209e1..4e572441e64a 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -75,6 +75,7 @@
#include <net/ipv6_stubs.h>
#include <net/bpf_sk_storage.h>
#include <net/transp_v6.h>
+#include <linux/btf_ids.h>
/**
* sk_filter_trim_cap - run a packet through a socket filter
@@ -3779,7 +3780,9 @@ static const struct bpf_func_proto bpf_skb_event_output_proto = {
.arg5_type = ARG_CONST_SIZE_OR_ZERO,
};
-static int bpf_skb_output_btf_ids[5];
+BTF_ID_LIST(bpf_skb_output_btf_ids)
+BTF_ID(struct, sk_buff)
+
const struct bpf_func_proto bpf_skb_output_proto = {
.func = bpf_skb_event_output,
.gpl_only = true,
@@ -4173,7 +4176,9 @@ static const struct bpf_func_proto bpf_xdp_event_output_proto = {
.arg5_type = ARG_CONST_SIZE_OR_ZERO,
};
-static int bpf_xdp_output_btf_ids[5];
+BTF_ID_LIST(bpf_xdp_output_btf_ids)
+BTF_ID(struct, xdp_buff)
+
const struct bpf_func_proto bpf_xdp_output_proto = {
.func = bpf_xdp_event_output,
.gpl_only = true,