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bpf: Set map_btf_{name, id} for all map types

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Set map_btf_name and map_btf_id for all map types so that map fields can
be accessed by bpf programs.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/a825f808f22af52b018dbe82f1c7d29dab5fc978.1592600985.git.rdna@fb.com
This commit is contained in:
Andrey Ignatov
2020-06-19 14:11:44 -07:00
committed by Daniel Borkmann
parent 41c48f3a98
commit 2872e9ac33
14 changed files with 72 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/bpf/arraymap.c
+15
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@@ -515,6 +515,7 @@ const struct bpf_map_ops array_map_ops = {
.map_btf_id = &array_map_btf_id,
};
static int percpu_array_map_btf_id;
const struct bpf_map_ops percpu_array_map_ops = {
.map_alloc_check = array_map_alloc_check,
.map_alloc = array_map_alloc,
@@ -525,6 +526,8 @@ const struct bpf_map_ops percpu_array_map_ops = {
.map_delete_elem = array_map_delete_elem,
.map_seq_show_elem = percpu_array_map_seq_show_elem,
.map_check_btf = array_map_check_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &percpu_array_map_btf_id,
};
static int fd_array_map_alloc_check(union bpf_attr *attr)
@@ -871,6 +874,7 @@ static void prog_array_map_free(struct bpf_map *map)
fd_array_map_free(map);
}
static int prog_array_map_btf_id;
const struct bpf_map_ops prog_array_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = prog_array_map_alloc,
@@ -886,6 +890,8 @@ const struct bpf_map_ops prog_array_map_ops = {
.map_fd_sys_lookup_elem = prog_fd_array_sys_lookup_elem,
.map_release_uref = prog_array_map_clear,
.map_seq_show_elem = prog_array_map_seq_show_elem,
.map_btf_name = "bpf_array",
.map_btf_id = &prog_array_map_btf_id,
};
static struct bpf_event_entry *bpf_event_entry_gen(struct file *perf_file,
@@ -964,6 +970,7 @@ static void perf_event_fd_array_release(struct bpf_map *map,
rcu_read_unlock();
}
static int perf_event_array_map_btf_id;
const struct bpf_map_ops perf_event_array_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = array_map_alloc,
@@ -975,6 +982,8 @@ const struct bpf_map_ops perf_event_array_map_ops = {
.map_fd_put_ptr = perf_event_fd_array_put_ptr,
.map_release = perf_event_fd_array_release,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &perf_event_array_map_btf_id,
};
#ifdef CONFIG_CGROUPS
@@ -997,6 +1006,7 @@ static void cgroup_fd_array_free(struct bpf_map *map)
fd_array_map_free(map);
}
static int cgroup_array_map_btf_id;
const struct bpf_map_ops cgroup_array_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = array_map_alloc,
@@ -1007,6 +1017,8 @@ const struct bpf_map_ops cgroup_array_map_ops = {
.map_fd_get_ptr = cgroup_fd_array_get_ptr,
.map_fd_put_ptr = cgroup_fd_array_put_ptr,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &cgroup_array_map_btf_id,
};
#endif
@@ -1080,6 +1092,7 @@ static u32 array_of_map_gen_lookup(struct bpf_map *map,
return insn - insn_buf;
}
static int array_of_maps_map_btf_id;
const struct bpf_map_ops array_of_maps_map_ops = {
.map_alloc_check = fd_array_map_alloc_check,
.map_alloc = array_of_map_alloc,
@@ -1092,4 +1105,6 @@ const struct bpf_map_ops array_of_maps_map_ops = {
.map_fd_sys_lookup_elem = bpf_map_fd_sys_lookup_elem,
.map_gen_lookup = array_of_map_gen_lookup,
.map_check_btf = map_check_no_btf,
.map_btf_name = "bpf_array",
.map_btf_id = &array_of_maps_map_btf_id,
};