diff options
| author | David L Stevens <david.stevens@oracle.com> | 2014-07-25 10:30:11 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-28 17:29:53 -0700 |
| commit | 8266f5fcf015101fbeb73cbc152c9d208c2baec0 (patch) | |
| tree | 3508b7da82362d26fbd9c44b7eeedfd7dbcbed23 | |
| parent | 8356f9768954e03494ce812f3985c665960ae3eb (diff) | |
| download | linux-next-8266f5fcf015101fbeb73cbc152c9d208c2baec0.tar.gz | |
sunvnet: only use connected ports when sending
The sunvnet driver doesn't check whether or not a port is connected when
transmitting packets, which results in failures if a port fails to connect
(e.g., due to a version mismatch). The original code also assumes
unnecessarily that the first port is up and a switch, even though there is
a flag for switch ports.
This patch only matches a port if it is connected, and otherwise uses the
switch_port flag to send the packet to a switch port that is up.
Signed-off-by: David L Stevens <david.stevens@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/sun/sunvnet.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index fd411d6e19a2..d813bfb1a847 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -610,6 +610,13 @@ static int __vnet_tx_trigger(struct vnet_port *port) return err; } +static inline bool port_is_up(struct vnet_port *vnet) +{ + struct vio_driver_state *vio = &vnet->vio; + + return !!(vio->hs_state & VIO_HS_COMPLETE); +} + struct vnet_port *__tx_port_find(struct vnet *vp, struct sk_buff *skb) { unsigned int hash = vnet_hashfn(skb->data); @@ -617,14 +624,19 @@ struct vnet_port *__tx_port_find(struct vnet *vp, struct sk_buff *skb) struct vnet_port *port; hlist_for_each_entry(port, hp, hash) { + if (!port_is_up(port)) + continue; if (ether_addr_equal(port->raddr, skb->data)) return port; } - port = NULL; - if (!list_empty(&vp->port_list)) - port = list_entry(vp->port_list.next, struct vnet_port, list); - - return port; + list_for_each_entry(port, &vp->port_list, list) { + if (!port->switch_port) + continue; + if (!port_is_up(port)) + continue; + return port; + } + return NULL; } struct vnet_port *tx_port_find(struct vnet *vp, struct sk_buff *skb) |