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From:   Vadim Lomovtsev <vlomovtsev@marvell.com>
To:     "sgoutham@cavium.com" <sgoutham@cavium.com>,
        "rric@kernel.org" <rric@kernel.org>,
        "davem@davemloft.net" <davem@davemloft.net>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     "dnelson@redhat.com" <dnelson@redhat.com>,
        Vadim Lomovtsev <vlomovtsev@marvell.com>
Subject: [PATCH 5/8] net: thunderx: rework xcast message structure to make it
 fit into 64 bit
Thread-Topic: [PATCH 5/8] net: thunderx: rework xcast message structure to
 make it fit into 64 bit
Thread-Index: AQHUvgSrY+mmCIeLzkuZ0JIBASS9Tg==
Date:   Wed, 6 Feb 2019 10:13:56 +0000
Message-ID: <20190206101351.16744-6-vlomovtsev@marvell.com>
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To communicate to PF each of ThunderX NIC VF uses mailbox which is
pair of 64 bit registers available to both VFn and PF.

This commit is to change the xcast message structure in order to
fit it into 64 bit.

Signed-off-by: Vadim Lomovtsev <vlomovtsev@marvell.com>
---
 drivers/net/ethernet/cavium/thunder/nic.h        | 6 ++----
 drivers/net/ethernet/cavium/thunder/nic_main.c   | 4 ++--
 drivers/net/ethernet/cavium/thunder/nicvf_main.c | 6 +++---
 3 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethern=
et/cavium/thunder/nic.h
index 376a96bce33f..227343625e83 100644
--- a/drivers/net/ethernet/cavium/thunder/nic.h
+++ b/drivers/net/ethernet/cavium/thunder/nic.h
@@ -577,10 +577,8 @@ struct set_ptp {
=20
 struct xcast {
 	u8    msg;
-	union {
-		u8    mode;
-		u64   mac;
-	} data;
+	u8    mode;
+	u64   mac:48;
 };
=20
 /* 128 bit shared memory between PF and each VF */
diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/e=
thernet/cavium/thunder/nic_main.c
index 90497a27df18..620dbe082ca0 100644
--- a/drivers/net/ethernet/cavium/thunder/nic_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c
@@ -1094,7 +1094,7 @@ static void nic_handle_mbx_intr(struct nicpf *nic, in=
t vf)
 		bgx =3D NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]);
 		lmac =3D NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]);
 		bgx_set_dmac_cam_filter(nic->node, bgx, lmac,
-					mbx.xcast.data.mac,
+					mbx.xcast.mac,
 					vf < NIC_VF_PER_MBX_REG ? vf :
 					vf - NIC_VF_PER_MBX_REG);
 		break;
@@ -1106,7 +1106,7 @@ static void nic_handle_mbx_intr(struct nicpf *nic, in=
t vf)
 		}
 		bgx =3D NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]);
 		lmac =3D NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]);
-		bgx_set_xcast_mode(nic->node, bgx, lmac, mbx.xcast.data.mode);
+		bgx_set_xcast_mode(nic->node, bgx, lmac, mbx.xcast.mode);
 		break;
 	default:
 		dev_err(&nic->pdev->dev,
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net=
/ethernet/cavium/thunder/nicvf_main.c
index dbd8862d60d6..30c7f54b4f17 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -1964,7 +1964,7 @@ static void __nicvf_set_rx_mode_task(u8 mode, struct =
xcast_addr_list *mc_addrs,
 		 * its' own LMAC to the filter to accept packets for it.
 		 */
 		mbx.xcast.msg =3D NIC_MBOX_MSG_ADD_MCAST;
-		mbx.xcast.data.mac =3D 0;
+		mbx.xcast.mac =3D 0;
 		if (nicvf_send_msg_to_pf(nic, &mbx) < 0)
 			goto free_mc;
 	}
@@ -1974,7 +1974,7 @@ static void __nicvf_set_rx_mode_task(u8 mode, struct =
xcast_addr_list *mc_addrs,
 		/* now go through kernel list of MACs and add them one by one */
 		for (idx =3D 0; idx < mc_addrs->count; idx++) {
 			mbx.xcast.msg =3D NIC_MBOX_MSG_ADD_MCAST;
-			mbx.xcast.data.mac =3D mc_addrs->mc[idx];
+			mbx.xcast.mac =3D mc_addrs->mc[idx];
 			if (nicvf_send_msg_to_pf(nic, &mbx) < 0)
 				goto free_mc;
 		}
@@ -1982,7 +1982,7 @@ static void __nicvf_set_rx_mode_task(u8 mode, struct =
xcast_addr_list *mc_addrs,
=20
 	/* and finally set rx mode for PF accordingly */
 	mbx.xcast.msg =3D NIC_MBOX_MSG_SET_XCAST;
-	mbx.xcast.data.mode =3D mode;
+	mbx.xcast.mode =3D mode;
=20
 	nicvf_send_msg_to_pf(nic, &mbx);
 free_mc:
--=20
2.17.2