netdev - [PATCH net-next 4/9] nfp: flower: ignore offload of VF and PF repr MAC addresses

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Date:   Tue, 15 Jan 2019 19:06:54 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net
Cc:     oss-drivers@...ronome.com, netdev@...r.kernel.org,
        John Hurley <john.hurley@...ronome.com>
Subject: [PATCH net-next 4/9] nfp: flower: ignore offload of VF and PF repr MAC addresses

From: John Hurley <john.hurley@...ronome.com>

Currently MAC addresses of all repr netdevs, along with selected non-NFP
controlled netdevs, are offloaded to FW as potential tunnel end-points.
However, the addresses of VF and PF reprs are meaningless outside of
internal communication and it is only those of physical port reprs
required.

Modify the MAC address offload selection code to ignore VF/PF repr devs.

Signed-off-by: John Hurley <john.hurley@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
index 3026ab178fd2..4e509c8c1aca 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c
@@ -614,11 +614,7 @@ static void nfp_tun_add_to_mac_offload_list(struct net_device *netdev,
 	if (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port) ==
 	    NFP_FLOWER_CMSG_PORT_TYPE_PHYS_PORT) {
 		nfp_mac_idx = port << 8 | NFP_FLOWER_CMSG_PORT_TYPE_PHYS_PORT;
-	} else if (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port) ==
-		   NFP_FLOWER_CMSG_PORT_TYPE_PCIE_PORT) {
-		port = FIELD_GET(NFP_FLOWER_CMSG_PORT_VNIC, port);
-		nfp_mac_idx = port << 8 | NFP_FLOWER_CMSG_PORT_TYPE_PCIE_PORT;
-	} else {
+	} else if (!port) {
 		/* Must assign our own unique 8-bit index. */
 		int idx = nfp_tun_get_mac_idx(app, netdev->ifindex);
 
@@ -628,6 +624,9 @@ static void nfp_tun_add_to_mac_offload_list(struct net_device *netdev,
 			return;
 		}
 		nfp_mac_idx = idx << 8 | NFP_FLOWER_CMSG_PORT_TYPE_OTHER_PORT;
+	} else {
+		kfree(entry);
+		return;
 	}
 
 	entry->index = cpu_to_be16(nfp_mac_idx);
-- 
2.19.2