static void mqprio_destroy(struct Qdisc *sch)
{
struct net_device *dev = qdisc_dev(sch);
struct mqprio_sched *priv = qdisc_priv(sch);
unsigned int ntx;
if (priv->qdiscs) {
for (ntx = 0;
ntx < dev->num_tx_queues && priv->qdiscs[ntx];
ntx++)
qdisc_destroy(priv->qdiscs[ntx]);
kfree(priv->qdiscs);
}
if (priv->hw_owned && dev->netdev_ops->ndo_setup_tc)
dev->netdev_ops->ndo_setup_tc(dev, 0);
else
netdev_set_num_tc(dev, 0);
}
int fm10k_setup_tc(struct net_device *dev, u8 tc)
{
struct fm10k_intfc *interface = netdev_priv(dev);
/* Currently only the PF supports priority classes */
if (tc && (interface->hw.mac.type != fm10k_mac_pf))
return -EINVAL;
/* Hardware supports up to 8 traffic classes */
if (tc > 8)
return -EINVAL;
/* Hardware has to reinitialize queues to match packet
* buffer alignment. Unfortunately, the hardware is not
* flexible enough to do this dynamically.
*/
if (netif_running(dev))
fm10k_close(dev);
fm10k_mbx_free_irq(interface);
fm10k_clear_queueing_scheme(interface);
/* we expect the prio_tc map to be repopulated later */
netdev_reset_tc(dev);
netdev_set_num_tc(dev, tc);
fm10k_init_queueing_scheme(interface);
fm10k_mbx_request_irq(interface);
if (netif_running(dev))
fm10k_open(dev);
/* flag to indicate SWPRI has yet to be updated */
interface->flags |= FM10K_FLAG_SWPRI_CONFIG;
return 0;
}
static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
{
struct net_device *dev = qdisc_dev(sch);
struct mqprio_sched *priv = qdisc_priv(sch);
struct netdev_queue *dev_queue;
struct Qdisc *qdisc;
int i, err = -EOPNOTSUPP;
struct tc_mqprio_qopt *qopt = NULL;
BUILD_BUG_ON(TC_MAX_QUEUE != TC_QOPT_MAX_QUEUE);
BUILD_BUG_ON(TC_BITMASK != TC_QOPT_BITMASK);
if (sch->parent != TC_H_ROOT)
return -EOPNOTSUPP;
if (!netif_is_multiqueue(dev))
return -EOPNOTSUPP;
if (nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);
if (mqprio_parse_opt(dev, qopt))
return -EINVAL;
/* pre-allocate qdisc, attachment can't fail */
priv->qdiscs = kcalloc(dev->num_tx_queues, sizeof(priv->qdiscs[0]),
GFP_KERNEL);
if (priv->qdiscs == NULL) {
err = -ENOMEM;
goto err;
}
for (i = 0; i < dev->num_tx_queues; i++) {
dev_queue = netdev_get_tx_queue(dev, i);
qdisc = qdisc_create_dflt(dev_queue, &pfifo_fast_ops,
TC_H_MAKE(TC_H_MAJ(sch->handle),
TC_H_MIN(i + 1)));
if (qdisc == NULL) {
err = -ENOMEM;
goto err;
}
priv->qdiscs[i] = qdisc;
}
/* If the mqprio options indicate that hardware should own
* the queue mapping then run ndo_setup_tc otherwise use the
* supplied and verified mapping
*/
if (qopt->hw) {
priv->hw_owned = 1;
err = dev->netdev_ops->ndo_setup_tc(dev, qopt->num_tc);
if (err)
goto err;
} else {
netdev_set_num_tc(dev, qopt->num_tc);
for (i = 0; i < qopt->num_tc; i++)
netdev_set_tc_queue(dev, i,
qopt->count[i], qopt->offset[i]);
}
/* Always use supplied priority mappings */
for (i = 0; i < TC_BITMASK + 1; i++)
netdev_set_prio_tc_map(dev, i, qopt->prio_tc_map[i]);
sch->flags |= TCQ_F_MQROOT;
return 0;
err:
mqprio_destroy(sch);
return err;
}
static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
{
struct net_device *dev = qdisc_dev(sch);
struct mqprio_sched *priv = qdisc_priv(sch);
struct netdev_queue *dev_queue;
struct Qdisc *qdisc;
int i, err = -EOPNOTSUPP;
struct tc_mqprio_qopt *qopt = NULL;
BUILD_BUG_ON(TC_MAX_QUEUE != TC_QOPT_MAX_QUEUE);
BUILD_BUG_ON(TC_BITMASK != TC_QOPT_BITMASK);
if (sch->parent != TC_H_ROOT)
return -EOPNOTSUPP;
if (!netif_is_multiqueue(dev))
return -EOPNOTSUPP;
if (!opt || nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);
if (mqprio_parse_opt(dev, qopt))
return -EINVAL;
/* pre-allocate qdisc, attachment can't fail */
priv->qdiscs = kcalloc(dev->num_tx_queues, sizeof(priv->qdiscs[0]),
GFP_KERNEL);
if (priv->qdiscs == NULL) {
err = -ENOMEM;
goto err;
}
for (i = 0; i < dev->num_tx_queues; i++) {
dev_queue = netdev_get_tx_queue(dev, i);
qdisc = qdisc_create_dflt(dev, dev_queue, &pfifo_fast_ops,
TC_H_MAKE(TC_H_MAJ(sch->handle),
TC_H_MIN(i + 1)));
if (qdisc == NULL) {
err = -ENOMEM;
goto err;
}
qdisc->flags |= TCQ_F_CAN_BYPASS;
priv->qdiscs[i] = qdisc;
}
netdev_set_num_tc(dev, qopt->num_tc);
for (i = 0; i < qopt->num_tc; i++)
netdev_set_tc_queue(dev, i,
qopt->count[i], qopt->offset[i]);
/* Always use supplied priority mappings */
for (i = 0; i < TC_BITMASK + 1; i++)
netdev_set_prio_tc_map(dev, i, qopt->prio_tc_map[i]);
sch->flags |= TCQ_F_MQROOT;
return 0;
err:
mqprio_destroy(sch);
return err;
}
static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state){
netdev_set_num_tc(netdev, 8);
return 0;
}