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Message-ID: <1470250549-10993-12-git-send-email-rvatsavayi@caviumnetworks.com>
Date: Wed, 3 Aug 2016 11:55:42 -0700
From: Raghu Vatsavayi <rvatsavayi@...iumnetworks.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>,
Raghu Vatsavayi <rvatsavayi@...iumnetworks.com>,
Derek Chickles <derek.chickles@...iumnetworks.com>,
Satanand Burla <satananda.burla@...iumnetworks.com>,
Felix Manlunas <felix.manlunas@...iumnetworks.com>,
Raghu Vatsavayi <raghu.vatsavayi@...iumnetworks.com>
Subject: [PATCH net-next 11/18] liquidio support for new device cn23xx
This patch adds support for work queue for link status and
control commands.
Signed-off-by: Derek Chickles <derek.chickles@...iumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@...iumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@...iumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@...iumnetworks.com>
---
drivers/net/ethernet/cavium/liquidio/lio_core.c | 5 +-
drivers/net/ethernet/cavium/liquidio/lio_main.c | 70 ++++++++++++++++++++--
.../net/ethernet/cavium/liquidio/octeon_network.h | 4 ++
3 files changed, 71 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c
index e443a96..ad1db3f 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_core.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c
@@ -156,10 +156,9 @@ void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr)
dev_info(&oct->pci_dev->dev, "%s MTU Changed from %d to %d\n",
netdev->name, netdev->mtu,
nctrl->ncmd.s.param1);
- rtnl_lock();
netdev->mtu = nctrl->ncmd.s.param1;
- call_netdevice_notifiers(NETDEV_CHANGEMTU, netdev);
- rtnl_unlock();
+ queue_delayed_work(lio->link_status_wq.wq,
+ &lio->link_status_wq.wk.work, 0);
break;
case OCTNET_CMD_GPIO_ACCESS:
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 88783d3..b300dd3 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -859,6 +859,48 @@ static void print_link_info(struct net_device *netdev)
}
/**
+ * \brief Routine to notify MTU change
+ * @param work work_struct data structure
+ */
+static void octnet_link_status_change(struct work_struct *work)
+{
+ struct cavium_wk *wk = (struct cavium_wk *)work;
+ struct lio *lio = (struct lio *)wk->ctxptr;
+
+ rtnl_lock();
+ call_netdevice_notifiers(NETDEV_CHANGEMTU, lio->netdev);
+ rtnl_unlock();
+}
+
+/**
+ * \brief Sets up the mtu status change work
+ * @param netdev network device
+ */
+static inline void setup_link_status_change_wq(struct net_device *netdev)
+{
+ struct lio *lio = GET_LIO(netdev);
+ struct octeon_device *oct = lio->oct_dev;
+
+ lio->link_status_wq.wq = alloc_workqueue("link-status",
+ WQ_MEM_RECLAIM, 0);
+ if (!lio->link_status_wq.wq) {
+ dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
+ return;
+ }
+ INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
+ octnet_link_status_change);
+ lio->link_status_wq.wk.ctxptr = lio;
+}
+
+static inline void cleanup_link_status_change_wq(struct net_device *netdev)
+{
+ struct lio *lio = GET_LIO(netdev);
+
+ cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
+ destroy_workqueue(lio->link_status_wq.wq);
+}
+
+/**
* \brief Update link status
* @param netdev network device
* @param ls link status structure
@@ -1387,11 +1429,16 @@ static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
napi_disable(napi);
oct->props[lio->ifidx].napi_enabled = 0;
+
+ if (OCTEON_CN23XX_PF(oct))
+ oct->droq[0]->ops.poll_mode = 0;
}
if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
unregister_netdev(netdev);
+ cleanup_link_status_change_wq(netdev);
+
delete_glists(lio);
free_netdev(netdev);
@@ -2269,6 +2316,14 @@ static inline int setup_io_queues(struct octeon_device *octeon_dev,
octeon_register_droq_ops(octeon_dev, q_no, &droq_ops);
}
+ if (OCTEON_CN23XX_PF(octeon_dev)) {
+ /* 23XX PF can receive control messages (via the first PF-owned
+ * droq) from the firmware even if the ethX interface is down,
+ * so that's why poll_mode must be off for the first droq.
+ */
+ octeon_dev->droq[0]->ops.poll_mode = 0;
+ }
+
/* set up IQs. */
for (q = 0; q < lio->linfo.num_txpciq; q++) {
num_tx_descs = CFG_GET_NUM_TX_DESCS_NIC_IF(octeon_get_conf
@@ -2350,12 +2405,20 @@ static int liquidio_open(struct net_device *netdev)
napi_enable(napi);
oct->props[lio->ifidx].napi_enabled = 1;
+
+ if (OCTEON_CN23XX_PF(oct))
+ oct->droq[0]->ops.poll_mode = 1;
}
oct_ptp_open(netdev);
ifstate_set(lio, LIO_IFSTATE_RUNNING);
+ /* Ready for link status updates */
+ lio->intf_open = 1;
+
+ netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
+
if (OCTEON_CN23XX_PF(oct)) {
if (!oct->msix_on)
setup_tx_poll_fn(netdev);
@@ -2365,14 +2428,9 @@ static int liquidio_open(struct net_device *netdev)
start_txq(netdev);
- netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
-
/* tell Octeon to start forwarding packets to host */
send_rx_ctrl_cmd(lio, 1);
- /* Ready for link status updates */
- lio->intf_open = 1;
-
dev_info(&oct->pci_dev->dev, "%s interface is opened\n",
netdev->name);
@@ -3665,6 +3723,8 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
liquidio_set_feature(netdev,
OCTNET_CMD_VERBOSE_ENABLE, 0);
+ setup_link_status_change_wq(netdev);
+
/* Register the network device with the OS */
if (register_netdev(netdev)) {
dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
index 7cfbdf9..d3b68d8 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_network.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h
@@ -122,6 +122,10 @@ struct lio {
/* work queue for txq status */
struct cavium_wq txq_status_wq;
+
+ /* work queue for link status */
+ struct cavium_wq link_status_wq;
+
};
#define LIO_SIZE (sizeof(struct lio))
--
1.8.3.1
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