From a2ec6172d29cf3aed92e9db40e83e36329db1dd5 Mon Sep 17 00:00:00 2001 From: Sudarsana Kalluru Date: Mon, 26 Oct 2015 11:02:32 +0200 Subject: [PATCH] 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 Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qede/qede_main.c | 47 ++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index 0351204317e7..890439cbec7e 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -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); -- 2.20.1