From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Wed, 21 Jun 2017 18:25:03 -0700
Subject: xdp: pass XDP flags into install handlers
Patch-mainline: v4.13-rc1
Git-commit: 32d602771b624e3a2fc86d5e220e9fa7dced767a
References: bsc#1056787

Pass XDP flags to the xdp ndo.  This will allow drivers to look
at the mode flags and make decisions about offload.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 include/linux/netdevice.h |    1 +
 net/core/dev.c            |    5 +++--
 2 files changed, 4 insertions(+), 2 deletions(-)

--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -820,6 +820,7 @@ struct netdev_xdp {
 	union {
 		/* XDP_SETUP_PROG */
 		struct {
+			u32 flags;
 			struct bpf_prog *prog;
 			struct netlink_ext_ack *extack;
 		};
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6961,7 +6961,7 @@ bool __dev_xdp_attached(struct net_devic
 }
 
 static int dev_xdp_install(struct net_device *dev, xdp_op_t xdp_op,
-			   struct netlink_ext_ack *extack,
+			   struct netlink_ext_ack *extack, u32 flags,
 			   struct bpf_prog *prog)
 {
 	struct netdev_xdp xdp;
@@ -6969,6 +6969,7 @@ static int dev_xdp_install(struct net_de
 	memset(&xdp, 0, sizeof(xdp));
 	xdp.command = XDP_SETUP_PROG;
 	xdp.extack = extack;
+	xdp.flags = flags;
 	xdp.prog = prog;
 
 	return xdp_op(dev, &xdp);
@@ -7013,7 +7014,7 @@ int dev_change_xdp_fd(struct net_device
 			return PTR_ERR(prog);
 	}
 
-	err = dev_xdp_install(dev, xdp_op, extack, prog);
+	err = dev_xdp_install(dev, xdp_op, extack, flags, prog);
 	if (err < 0 && prog)
 		bpf_prog_put(prog);