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authorEric Dumazet <eric.dumazet@gmail.com>2009-09-03 00:11:45 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-03 20:02:13 -0700
commit2c11455321f37da6fe6cc36353149f9ac9183334 (patch)
tree8033ca6f3cc54780074c7d2a734ee3c62fec3ca3 /drivers/net
parent0fa0ee053aaa53939306376719450cfe56e33e3b (diff)
macvlan: add multiqueue capability
macvlan devices are currently not multi-queue capable. We can do that defining rtnl_link_ops method, get_tx_queues(), called from rtnl_create_link() This new method gets num_tx_queues/real_num_tx_queues from lower device. macvlan_get_tx_queues() is a copy of vlan_get_tx_queues(). Because macvlan_start_xmit() has to update netdev_queue stats only (and not dev->stats), I chose to change tx_errors/tx_aborted_errors accounting to tx_dropped, since netdev_queue structure doesnt define tx_errors / tx_aborted_errors. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/macvlan.c33
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index c85c46d2a309..3aabfd9dd212 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -187,6 +187,8 @@ static struct sk_buff *macvlan_handle_frame(struct sk_buff *skb)
static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
+ int i = skb_get_queue_mapping(skb);
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
const struct macvlan_dev *vlan = netdev_priv(dev);
unsigned int len = skb->len;
int ret;
@@ -195,12 +197,11 @@ static netdev_tx_t macvlan_start_xmit(struct sk_buff *skb,
ret = dev_queue_xmit(skb);
if (likely(ret == NET_XMIT_SUCCESS)) {
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += len;
- } else {
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- }
+ txq->tx_packets++;
+ txq->tx_bytes += len;
+ } else
+ txq->tx_dropped++;
+
return NETDEV_TX_OK;
}
@@ -484,6 +485,25 @@ static int macvlan_validate(struct nlattr *tb[], struct nlattr *data[])
return 0;
}
+static int macvlan_get_tx_queues(struct net *net,
+ struct nlattr *tb[],
+ unsigned int *num_tx_queues,
+ unsigned int *real_num_tx_queues)
+{
+ struct net_device *real_dev;
+
+ if (!tb[IFLA_LINK])
+ return -EINVAL;
+
+ real_dev = __dev_get_by_index(net, nla_get_u32(tb[IFLA_LINK]));
+ if (!real_dev)
+ return -ENODEV;
+
+ *num_tx_queues = real_dev->num_tx_queues;
+ *real_num_tx_queues = real_dev->real_num_tx_queues;
+ return 0;
+}
+
static int macvlan_newlink(struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
@@ -550,6 +570,7 @@ static void macvlan_dellink(struct net_device *dev)
static struct rtnl_link_ops macvlan_link_ops __read_mostly = {
.kind = "macvlan",
.priv_size = sizeof(struct macvlan_dev),
+ .get_tx_queues = macvlan_get_tx_queues,
.setup = macvlan_setup,
.validate = macvlan_validate,
.newlink = macvlan_newlink,