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Commit 56ce097c authored by John Fastabend's avatar John Fastabend Committed by David S. Miller
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net: comment fixes against BPF devmap helper calls 



Update BPF comments to accurately reflect XDP usage.

Fixes: 97f91a7c ("bpf: add bpf_redirect_map helper routine")
Reported-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8f752224

include/uapi/linux/bpf.h

+11 −5
Original line number Diff line number Diff line
@@ -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

 *     @flags:

 *	  cls_bpf:

 *          bit 0 - if set, redirect to ingress instead of egress

 *          other bits - reserved

 *     Return: TC_ACT_REDIRECT

 * int bpf_redirect_map(key, map, flags)

 *	  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