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net: comment fixes against BPF devmap helper calls 

Update BPF comments to accurately reflect XDP usage.

Fixes: 97f91a7cf0 ("bpf: add bpf_redirect_map helper routine")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2017-08-04 08:24:05 -07:00 committed by David S. Miller
parent 8f75222446
commit 56ce097c1c
1 changed files with 11 additions and 5 deletions
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16
include/uapi/linux/bpf.h
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@ -345,14 +345,20 @@ union bpf_attr {
* int bpf_redirect(ifindex, flags)
* redirect to another netdev
* @ifindex: ifindex of the net device
* @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)
* @flags:
* cls_bpf:
* bit 0 - if set, redirect to ingress instead of egress
* other bits - reserved
* xdp_bpf:
* all bits - reserved
* Return: cls_bpf: TC_ACT_REDIRECT on success or TC_ACT_SHOT on error
* xdp_bfp: XDP_REDIRECT on success or XDP_ABORT on error
* int bpf_redirect_map(map, key, flags)
* redirect to endpoint in map
* @map: pointer to dev map
* @key: index in map to lookup
* @map: fd of map to do lookup in
* @flags: --
* Return: XDP_REDIRECT on success or XDP_ABORT on error
*
* u32 bpf_get_route_realm(skb)
* retrieve a dst's tclassid