netdev - [PATCH bpf-next 03/11] net: xdp: added bpf_netdev_command XDP_{QUERY,SETUP}_XSK

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Message-Id: <20180604120601.18123-4-bjorn.topel@gmail.com>
Date:   Mon,  4 Jun 2018 14:05:53 +0200
From:   Björn Töpel <bjorn.topel@...il.com>
To:     bjorn.topel@...il.com, magnus.karlsson@...el.com,
        magnus.karlsson@...il.com, alexander.h.duyck@...el.com,
        alexander.duyck@...il.com, ast@...com, brouer@...hat.com,
        daniel@...earbox.net, netdev@...r.kernel.org,
        mykyta.iziumtsev@...aro.org
Cc:     Björn Töpel <bjorn.topel@...el.com>,
        john.fastabend@...il.com, willemdebruijn.kernel@...il.com,
        mst@...hat.com, michael.lundkvist@...csson.com,
        jesse.brandeburg@...el.com, anjali.singhai@...el.com,
        qi.z.zhang@...el.com, francois.ozog@...aro.org,
        ilias.apalodimas@...aro.org, brian.brooks@...aro.org,
        andy@...yhouse.net, michael.chan@...adcom.com,
        intel-wired-lan@...ts.osuosl.org
Subject: [PATCH bpf-next 03/11] net: xdp: added bpf_netdev_command XDP_{QUERY,SETUP}_XSK_UMEM

From: Björn Töpel <bjorn.topel@...el.com>

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@...el.com>
---
 include/linux/netdevice.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 7f17785a59d7..85d91cc41cdf 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;
 	};
 };
 
-- 
2.14.1