From: Björn Töpel <bjorn.topel@intel.com>
Date: Mon, 4 Jun 2018 12:05:53 +0000 (+0200)
Subject: net: xdp: added bpf_netdev_command XDP_{QUERY, SETUP}_XSK_UMEM
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=74515c5750f30244a901c3c0c82a2fe534b3c9c5;p=openwrt%2Fstaging%2Fblogic.git

net: xdp: added bpf_netdev_command XDP_{QUERY, SETUP}_XSK_UMEM

Extend ndo_bpf with two new commands used for query zero-copy support
and register an UMEM to a queue_id of a netdev.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
---

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 42c6ea35a6f2..cc4ea7ab6d24 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -817,10 +817,13 @@ enum bpf_netdev_command {
 	BPF_OFFLOAD_DESTROY,
 	BPF_OFFLOAD_MAP_ALLOC,
 	BPF_OFFLOAD_MAP_FREE,
+	XDP_QUERY_XSK_UMEM,
+	XDP_SETUP_XSK_UMEM,
 };
 
 struct bpf_prog_offload_ops;
 struct netlink_ext_ack;
+struct xdp_umem;
 
 struct netdev_bpf {
 	enum bpf_netdev_command command;
@@ -851,6 +854,11 @@ struct netdev_bpf {
 		struct {
 			struct bpf_offloaded_map *offmap;
 		};
+		/* XDP_SETUP_XSK_UMEM */
+		struct {
+			struct xdp_umem *umem;
+			u16 queue_id;
+		} xsk;
 	};
 };