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qede: Add support for link 

This adds basic link functionality to qede - driver still doesn't provide
users with an API to change any link property, but it does request qed to
initialize the link using default configuration, and registers a callback
that allows it to get link notifications.

This patch adds the ability of the driver to set the carrier as active and
to enable traffic as a result of async. link notifications.
Following this patch, driver should be capable of running traffic.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sudarsana Kalluru 2015-10-26 11:02:32 +02:00 committed by David S. Miller
parent cc875c2e4f
commit a2ec6172d2
1 changed files with 47 additions and 0 deletions
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47
drivers/net/ethernet/qlogic/qede/qede_main.c
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@ -87,6 +87,7 @@ static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
static void qede_remove(struct pci_dev *pdev);
static int qede_alloc_rx_buffer(struct qede_dev *edev,
struct qede_rx_queue *rxq);
static void qede_link_update(void *dev, struct qed_link_output *link);
static struct pci_driver qede_pci_driver = {
.name = "qede",
@ -95,6 +96,12 @@ static struct pci_driver qede_pci_driver = {
.remove = qede_remove,
};
static struct qed_eth_cb_ops qede_ll_ops = {
{
.link_update = qede_link_update,
},
};
static int qede_netdev_event(struct notifier_block *this, unsigned long event,
void *ptr)
{
@ -1304,6 +1311,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
edev->ops->register_ops(cdev, &qede_ll_ops, edev);
INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
mutex_init(&edev->qede_lock);
@ -2099,6 +2108,7 @@ enum qede_unload_mode {
static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
{
struct qed_link_params link_params;
int rc;
DP_INFO(edev, "Starting qede unload\n");
@ -2110,6 +2120,10 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
netif_tx_disable(edev->ndev);
netif_carrier_off(edev->ndev);
/* Reset the link */
memset(&link_params, 0, sizeof(link_params));
link_params.link_up = false;
edev->ops->common->set_link(edev->cdev, &link_params);
rc = qede_stop_queues(edev);
if (rc) {
qede_sync_free_irqs(edev);
@ -2140,6 +2154,8 @@ enum qede_load_mode {
static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
{
struct qed_link_params link_params;
struct qed_link_output link_output;
int rc;
DP_INFO(edev, "Starting qede load\n");
@ -2183,6 +2199,17 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
mutex_lock(&edev->qede_lock);
edev->state = QEDE_STATE_OPEN;
mutex_unlock(&edev->qede_lock);
/* Ask for link-up using current configuration */
memset(&link_params, 0, sizeof(link_params));
link_params.link_up = true;
edev->ops->common->set_link(edev->cdev, &link_params);
/* Query whether link is already-up */
memset(&link_output, 0, sizeof(link_output));
edev->ops->common->get_link(edev->cdev, &link_output);
qede_link_update(edev, &link_output);
DP_INFO(edev, "Ending successfully qede load\n");
return 0;
@ -2223,6 +2250,26 @@ static int qede_close(struct net_device *ndev)
return 0;
}
static void qede_link_update(void *dev, struct qed_link_output *link)
{
struct qede_dev *edev = dev;
if (!netif_running(edev->ndev)) {
DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
return;
}
if (link->link_up) {
DP_NOTICE(edev, "Link is up\n");
netif_tx_start_all_queues(edev->ndev);
netif_carrier_on(edev->ndev);
} else {
DP_NOTICE(edev, "Link is down\n");
netif_tx_disable(edev->ndev);
netif_carrier_off(edev->ndev);
}
}
static int qede_set_mac_addr(struct net_device *ndev, void *p)
{
struct qede_dev *edev = netdev_priv(ndev);