Track our used and unused queue indexies correctly. Otherwise, as ports
dropped out and returned, they all eventually ended up with the same
queue index.
Orabug: 25190537
Signed-off-by: Shannon Nelson <shannon.nel...@oracle.com>
---
drivers/net/ethernet/sun/sunvnet_common.c | 24 ++++++++++++++++++++----
drivers/net/ethernet/sun/sunvnet_common.h | 11 ++---------
2 files changed, 22 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/sun/sunvnet_common.c
b/drivers/net/ethernet/sun/sunvnet_common.c
index d3dc8ed..5e1d016 100644
--- a/drivers/net/ethernet/sun/sunvnet_common.c
+++ b/drivers/net/ethernet/sun/sunvnet_common.c
@@ -1728,11 +1728,25 @@ void sunvnet_poll_controller_common(struct net_device
*dev, struct vnet *vp)
void sunvnet_port_add_txq_common(struct vnet_port *port)
{
struct vnet *vp = port->vp;
- int n;
+ int smallest = 0;
+ int i;
+
+ /* find the first least-used q
+ * When there are more ldoms than q's, we start to
+ * double up on ports per queue.
+ */
+ for (i = 0; i < VNET_MAX_TXQS; i++) {
+ if (vp->q_used[i] == 0) {
+ smallest = i;
+ break;
+ }
+ if (vp->q_used[i] < vp->q_used[smallest])
+ smallest = i;
+ }
- n = vp->nports++;
- n = n & (VNET_MAX_TXQS - 1);
- port->q_index = n;
+ vp->nports++;
+ vp->q_used[smallest]++;
+ port->q_index = smallest;
netif_tx_wake_queue(netdev_get_tx_queue(VNET_PORT_TO_NET_DEVICE(port),
port->q_index));
}
@@ -1743,5 +1757,7 @@ void sunvnet_port_rm_txq_common(struct vnet_port *port)
port->vp->nports--;
netif_tx_stop_queue(netdev_get_tx_queue(VNET_PORT_TO_NET_DEVICE(port),
port->q_index));
+ port->vp->q_used[port->q_index]--;
+ port->q_index = 0;
}
EXPORT_SYMBOL_GPL(sunvnet_port_rm_txq_common);
diff --git a/drivers/net/ethernet/sun/sunvnet_common.h
b/drivers/net/ethernet/sun/sunvnet_common.h
index c0fac03..b20d6fa 100644
--- a/drivers/net/ethernet/sun/sunvnet_common.h
+++ b/drivers/net/ethernet/sun/sunvnet_common.h
@@ -112,22 +112,15 @@ struct vnet_mcast_entry {
};
struct vnet {
- /* Protects port_list and port_hash. */
- spinlock_t lock;
-
+ spinlock_t lock; /* Protects port_list and port_hash. */
struct net_device *dev;
-
u32 msg_enable;
-
+ u8 q_used[VNET_MAX_TXQS];
struct list_head port_list;
-
struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
-
struct vnet_mcast_entry *mcast_list;
-
struct list_head list;
u64 local_mac;
-
int nports;
};
--
1.7.1
