From: Scott Feldman Date: Sat, 13 Jun 2015 04:35:47 +0000 (-0700) Subject: rocker: mark neigh update event processing as 'no wait' X-Git-Tag: firefly_0821_release~176^2~1587^2~62^2~3 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=02a9fbfc878ec3e4c17b11d6ac41dfe86667b732;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c index c1910c15a86f..1995b592af4e 100644 --- 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,