netdev - [PATCH net-next 06/10] bpf: thunderx: Report bpf_prog ID during XDP_QUERY

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Message-ID: <20170613010025.2983342-7-kafai@fb.com>
Date:   Mon, 12 Jun 2017 18:00:21 -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>,
        Sunil Goutham <sgoutham@...ium.com>
Subject: [PATCH net-next 06/10] bpf: thunderx: Report bpf_prog ID during XDP_QUERY_PROG

Add support to thunderx to report bpf_prog ID during XDP_QUERY_PROG.

Signed-off-by: Martin KaFai Lau <kafai@...com>
Cc: Sunil Goutham <sgoutham@...ium.com>
Acked-by: Alexei Starovoitov <ast@...com>
Acked-by: Daniel Borkmann <daniel@...earbox.net>
---
 drivers/net/ethernet/cavium/thunder/nicvf_main.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index d6477af88085..00f8247f2a9a 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1761,9 +1761,16 @@ static int nicvf_xdp(struct net_device *netdev, struct netdev_xdp *xdp)
 	switch (xdp->command) {
 	case XDP_SETUP_PROG:
 		return nicvf_xdp_setup(nic, xdp->prog);
-	case XDP_QUERY_PROG:
-		xdp->prog_attached = !!nic->xdp_prog;
+	case XDP_QUERY_PROG: {
+		const struct bpf_prog *xdp_prog;
+
+		xdp_prog = READ_ONCE(nic->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