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bpf: Expand map key argument of bpf_redirect_map to u64

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For queueing packets in XDP we want to add a new redirect map type with
support for 64-bit indexes. To prepare fore this, expand the width of the
'key' argument to the bpf_redirect_map() helper. Since BPF registers are
always 64-bit, this should be safe to do after the fact.

Acked-by: Song Liu <song@kernel.org>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20221108140601.149971-3-toke@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Toke Høiland-Jørgensen
2022-11-08 15:06:00 +01:00
committed by Alexei Starovoitov
parent 14d898f3c1
commit 32637e3300
8 changed files with 17 additions and 17 deletions
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kernel/bpf/devmap.c
+2 -2
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@@ -992,14 +992,14 @@ static int dev_map_hash_update_elem(struct bpf_map *map, void *key, void *value,
map, key, value, map_flags);
}
static int dev_map_redirect(struct bpf_map *map, u32 ifindex, u64 flags)
static int dev_map_redirect(struct bpf_map *map, u64 ifindex, u64 flags)
{
return __bpf_xdp_redirect_map(map, ifindex, flags,
BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS,
__dev_map_lookup_elem);
}
static int dev_hash_map_redirect(struct bpf_map *map, u32 ifindex, u64 flags)
static int dev_hash_map_redirect(struct bpf_map *map, u64 ifindex, u64 flags)
{
return __bpf_xdp_redirect_map(map, ifindex, flags,
BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS,