netdev - [PATCH net-next 07/10] bpf: ixgbe: Report bpf_prog ID during XDP_QUERY

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Message-ID: <20170613010025.2983342-8-kafai@fb.com>
Date:   Mon, 12 Jun 2017 18:00:22 -0700
From:   Martin KaFai Lau <kafai@...com>
To:     <netdev@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>,
        Alexander Duyck <alexander.h.duyck@...el.com>,
        John Fastabend <john.fastabend@...il.com>
Subject: [PATCH net-next 07/10] bpf: ixgbe: Report bpf_prog ID during XDP_QUERY_PROG

Add support to ixgbe to report bpf_prog ID during XDP_QUERY_PROG.

Signed-off-by: Martin KaFai Lau <kafai@...com>
Cc: Alexander Duyck <alexander.h.duyck@...el.com>
Cc: John Fastabend <john.fastabend@...il.com>
Acked-by: Alexei Starovoitov <ast@...com>
Acked-by: Daniel Borkmann <daniel@...earbox.net>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 812319ab77db..62fb564d62a2 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -9799,9 +9799,16 @@ static int ixgbe_xdp(struct net_device *dev, struct netdev_xdp *xdp)
 	switch (xdp->command) {
 	case XDP_SETUP_PROG:
 		return ixgbe_xdp_setup(dev, xdp->prog);
-	case XDP_QUERY_PROG:
-		xdp->prog_attached = !!(adapter->xdp_prog);
+	case XDP_QUERY_PROG: {
+		const struct bpf_prog *xdp_prog;
+
+		xdp_prog = READ_ONCE(adapter->xdp_prog);
+		if (xdp_prog)
+			xdp->prog_id = xdp_prog->aux->id;
+		else
+			xdp->prog_id = 0;
 		return 0;
+	}
 	default:
 		return -EINVAL;
 	}
-- 
2.9.3