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| author | John Fastabend <john.fastabend@gmail.com> | 2017-07-17 18:29:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-17 18:48:06 +0200 |
| commit | 97f91a7cf04ff605845c20948b8a80e54cbd3376 (patch) | |
| tree | 0d5c2872667d06e7e2a7f83253505c5170a0258b /include | |
| parent | bpf: add devmap, a map for storing net device references (diff) | |
| download | linux-97f91a7cf04ff605845c20948b8a80e54cbd3376.tar.xz linux-97f91a7cf04ff605845c20948b8a80e54cbd3376.zip | |
bpf: add bpf_redirect_map helper routine
BPF programs can use the devmap with a bpf_redirect_map() helper
routine to forward packets to netdevice in map.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index b69e7a5869ff..d0d3281ac678 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -379,4 +379,7 @@ extern const struct bpf_func_proto bpf_get_stackid_proto; void bpf_user_rnd_init_once(void); u64 bpf_user_rnd_u32(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5); +/* Map specifics */ +struct net_device *__dev_map_lookup_elem(struct bpf_map *map, u32 key); + #endif /* _LINUX_BPF_H */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index ecbb0e7e15bc..1106a8c4cd36 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -348,6 +348,11 @@ union bpf_attr { * @flags: bit 0 - if set, redirect to ingress instead of egress * other bits - reserved * Return: TC_ACT_REDIRECT + * int bpf_redirect_map(key, map, flags) + * redirect to endpoint in map + * @key: index in map to lookup + * @map: fd of map to do lookup in + * @flags: -- * * u32 bpf_get_route_realm(skb) * retrieve a dst's tclassid @@ -592,7 +597,8 @@ union bpf_attr { FN(get_socket_uid), \ FN(set_hash), \ FN(setsockopt), \ - FN(skb_adjust_room), + FN(skb_adjust_room), \ + FN(redirect_map), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call |