rocker: mark neigh update event processing as 'no wait'

Neigh update event handler runs in a context where we can't sleep, so mark
processing in driver with ROCKER_OP_FLAG_NOWAIT.  NOWAIT will use
GFP_ATOMIC for allocations and will queue cmds to the device's cmd ring but
will not wait (sleep) for cmd response back from device.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index c1910c15a86fe4d647741d64ca0269b4b07b5cda..1995b592af4ee062614a21d4cef3393ad409dd04 100644 (file)
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -5251,7 +5251,8 @@ static struct notifier_block rocker_netdevice_nb __read_mostly = {
 static int rocker_neigh_update(struct net_device *dev, struct neighbour *n)
 {
        struct rocker_port *rocker_port = netdev_priv(dev);
-       int flags = (n->nud_state & NUD_VALID) ? 0 : ROCKER_OP_FLAG_REMOVE;
+       int flags = (n->nud_state & NUD_VALID ? 0 : ROCKER_OP_FLAG_REMOVE) |
+                   ROCKER_OP_FLAG_NOWAIT;
        __be32 ip_addr = *(__be32 *)n->primary_key;
 
        return rocker_port_ipv4_neigh(rocker_port, SWITCHDEV_TRANS_NONE,