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authorJohn Fastabend <john.fastabend@gmail.com>2017-08-04 08:24:05 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-04 11:29:03 -0700
commit56ce097c1caede1f9c191a7c9699b950e7c36ad9 (patch)
tree3012dd05d16bf33de3bb46f450dc46496c93c60c
parent8f75222446b99baf4e01176483104c9270c5203e (diff)
net: comment fixes against BPF devmap helper calls
Update BPF comments to accurately reflect XDP usage. Fixes: 97f91a7cf04ff ("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>
-rw-r--r--include/uapi/linux/bpf.h16
1 files changed, 11 insertions, 5 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 1106a8c4cd36..1d06be1569b1 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -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