qede: Split PF/VF ndos.

PFs and VFs share the same structure of NDOs today,
and the VFs explicitly fails the ndo_xdp() callback stating
it doesn't support XDP.

This results in lots of:

  [qede_xdp:1032(enp131s2)]VFs don't support XDP
  ------------[ cut here ]------------
  WARNING: CPU: 4 PID: 1426 at net/core/rtnetlink.c:1637 rtnl_dump_ifinfo+0x354/0x3c0
  ...
  Call Trace:
    ? __alloc_skb+0x9b/0x1d0
    netlink_dump+0x122/0x290
    netlink_recvmsg+0x27d/0x430
    sock_recvmsg+0x3d/0x50
  ...

As every dump request for the VF interface info would fail due to
rtnl_xdp_fill() returning an error code.

To resolve this, introduce a subset of the NDOs meant for the VF
in a seperate structure and register that one instead for VFs,
and omit the ndo_xdp initialization.

Fixes: 40b8c45492ef ("qede: Prevent VFs from using XDP")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index eb56520..333876c 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -1028,11 +1028,6 @@ int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp)
 {
        struct qede_dev *edev = netdev_priv(dev);
 
-       if (IS_VF(edev)) {
-               DP_NOTICE(edev, "VFs don't support XDP\n");
-               return -EOPNOTSUPP;
-       }
-
        switch (xdp->command) {
        case XDP_SETUP_PROG:
                return qede_xdp_set(edev, xdp->prog);

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index 263fd28..38b77bb 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -563,6 +563,23 @@ static const struct net_device_ops qede_netdev_ops = {
 #endif
 };
 
+static const struct net_device_ops qede_netdev_vf_ops = {
+       .ndo_open = qede_open,
+       .ndo_stop = qede_close,
+       .ndo_start_xmit = qede_start_xmit,
+       .ndo_set_rx_mode = qede_set_rx_mode,
+       .ndo_set_mac_address = qede_set_mac_addr,
+       .ndo_validate_addr = eth_validate_addr,
+       .ndo_change_mtu = qede_change_mtu,
+       .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
+       .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
+       .ndo_set_features = qede_set_features,
+       .ndo_get_stats64 = qede_get_stats64,
+       .ndo_udp_tunnel_add = qede_udp_tunnel_add,
+       .ndo_udp_tunnel_del = qede_udp_tunnel_del,
+       .ndo_features_check = qede_features_check,
+};
+
 /* -------------------------------------------------------------------------
  * START OF PROBE / REMOVE
  * -------------------------------------------------------------------------
@@ -622,7 +639,10 @@ static void qede_init_ndev(struct qede_dev *edev)
 
        ndev->watchdog_timeo = TX_TIMEOUT;
 
-       ndev->netdev_ops = &qede_netdev_ops;
+       if (IS_VF(edev))
+               ndev->netdev_ops = &qede_netdev_vf_ops;
+       else
+               ndev->netdev_ops = &qede_netdev_ops;
 
        qede_set_ethtool_ops(ndev);