Support static initialization of BPF_MAP_TYPE_PROG_ARRAY #2178
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Master branch: 8cccee9 |
Support static initialization of BPF_MAP_TYPE_PROG_ARRAY with a
syntax similar to map-in-map initialization ([0]):
SEC("socket")
int tailcall_1(void *ctx)
{
return 0;
}
struct {
__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
__uint(max_entries, 2);
__uint(key_size, sizeof(__u32));
__array(values, int (void *));
} prog_array_init SEC(".maps") = {
.values = {
[1] = (void *)&tailcall_1,
},
};
Here's the relevant part of libbpf debug log showing what's
going on with prog-array initialization:
libbpf: sec '.relsocket': collecting relocation for section(3) 'socket'
libbpf: sec '.relsocket': relo #0: insn #2 against 'prog_array_init'
libbpf: prog 'entry': found map 0 (prog_array_init, sec 4, off 0) for insn #0
libbpf: .maps relo #0: for 3 value 0 rel->r_offset 32 name 53 ('tailcall_1')
libbpf: .maps relo #0: map 'prog_array_init' slot [1] points to prog 'tailcall_1'
libbpf: map 'prog_array_init': created successfully, fd=5
libbpf: map 'prog_array_init': slot [1] set to prog 'tailcall_1' fd=6
[0] Closes: libbpf/libbpf#354
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Add testcase for BPF_MAP_TYPE_PROG_ARRAY static initialization. Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
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Master branch: fa721d4 |
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=583549 expired. Closing PR. |
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Pull request for series with
subject: Support static initialization of BPF_MAP_TYPE_PROG_ARRAY
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=583549