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path: root/drivers/net/enic/enic_main.c
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Diffstat (limited to 'drivers/net/enic/enic_main.c')
-rw-r--r--drivers/net/enic/enic_main.c153
1 files changed, 102 insertions, 51 deletions
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 2f433fbfca0..67a27cd304d 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -23,6 +23,7 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
@@ -152,12 +153,12 @@ static inline unsigned int enic_legacy_notify_intr(void)
static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq)
{
- return rq;
+ return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
}
static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq)
{
- return enic->rq_count + wq;
+ return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
}
static inline unsigned int enic_msix_err_intr(struct enic *enic)
@@ -283,12 +284,10 @@ static int enic_set_coalesce(struct net_device *netdev,
u32 rx_coalesce_usecs;
unsigned int i, intr;
- tx_coalesce_usecs = min_t(u32,
- INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
- ecmd->tx_coalesce_usecs);
- rx_coalesce_usecs = min_t(u32,
- INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
- ecmd->rx_coalesce_usecs);
+ tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
+ vnic_dev_get_intr_coal_timer_max(enic->vdev));
+ rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
+ vnic_dev_get_intr_coal_timer_max(enic->vdev));
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
@@ -297,26 +296,26 @@ static int enic_set_coalesce(struct net_device *netdev,
intr = enic_legacy_io_intr();
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSI:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
vnic_intr_coalescing_timer_set(&enic->intr[0],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSIX:
for (i = 0; i < enic->wq_count; i++) {
intr = enic_msix_wq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
}
for (i = 0; i < enic->rq_count; i++) {
intr = enic_msix_rq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
+ rx_coalesce_usecs);
}
break;
@@ -423,11 +422,18 @@ static void enic_mtu_check(struct enic *enic)
if (mtu && mtu != enic->port_mtu) {
enic->port_mtu = mtu;
- if (mtu < netdev->mtu)
- netdev_warn(netdev,
- "interface MTU (%d) set higher "
- "than switch port MTU (%d)\n",
- netdev->mtu, mtu);
+ if (enic_is_dynamic(enic)) {
+ mtu = max_t(int, ENIC_MIN_MTU,
+ min_t(int, ENIC_MAX_MTU, mtu));
+ if (mtu != netdev->mtu)
+ schedule_work(&enic->change_mtu_work);
+ } else {
+ if (mtu < netdev->mtu)
+ netdev_warn(netdev,
+ "interface MTU (%d) set higher "
+ "than switch port MTU (%d)\n",
+ netdev->mtu, mtu);
+ }
}
}
@@ -793,10 +799,10 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
}
/* dev_base_lock rwlock held, nominally process context */
-static struct net_device_stats *enic_get_stats(struct net_device *netdev)
+static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev,
+ struct rtnl_link_stats64 *net_stats)
{
struct enic *enic = netdev_priv(netdev);
- struct net_device_stats *net_stats = &netdev->stats;
struct vnic_stats *stats;
enic_dev_stats_dump(enic, &stats);
@@ -1023,14 +1029,6 @@ static void enic_set_rx_mode(struct net_device *netdev)
}
}
-/* rtnl lock is held */
-static void enic_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *vlan_group)
-{
- struct enic *enic = netdev_priv(netdev);
- enic->vlan_group = vlan_group;
-}
-
/* netif_tx_lock held, BHs disabled */
static void enic_tx_timeout(struct net_device *netdev)
{
@@ -1258,24 +1256,13 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
skb->dev = netdev;
- if (enic->vlan_group && vlan_stripped &&
- (vlan_tci & CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK)) {
-
- if (netdev->features & NETIF_F_GRO)
- vlan_gro_receive(&enic->napi[q_number],
- enic->vlan_group, vlan_tci, skb);
- else
- vlan_hwaccel_receive_skb(skb,
- enic->vlan_group, vlan_tci);
-
- } else {
+ if (vlan_stripped)
+ __vlan_hwaccel_put_tag(skb, vlan_tci);
- if (netdev->features & NETIF_F_GRO)
- napi_gro_receive(&enic->napi[q_number], skb);
- else
- netif_receive_skb(skb);
-
- }
+ if (netdev->features & NETIF_F_GRO)
+ napi_gro_receive(&enic->napi[q_number], skb);
+ else
+ netif_receive_skb(skb);
} else {
/* Buffer overflow
@@ -1560,7 +1547,7 @@ static void enic_notify_timer_start(struct enic *enic)
default:
/* Using intr for notification for INTx/MSI-X */
break;
- };
+ }
}
/* rtnl lock is held, process context */
@@ -1688,6 +1675,9 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
return -EINVAL;
+ if (enic_is_dynamic(enic))
+ return -EOPNOTSUPP;
+
if (running)
enic_stop(netdev);
@@ -1704,6 +1694,55 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
+static void enic_change_mtu_work(struct work_struct *work)
+{
+ struct enic *enic = container_of(work, struct enic, change_mtu_work);
+ struct net_device *netdev = enic->netdev;
+ int new_mtu = vnic_dev_mtu(enic->vdev);
+ int err;
+ unsigned int i;
+
+ new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu));
+
+ rtnl_lock();
+
+ /* Stop RQ */
+ del_timer_sync(&enic->notify_timer);
+
+ for (i = 0; i < enic->rq_count; i++)
+ napi_disable(&enic->napi[i]);
+
+ vnic_intr_mask(&enic->intr[0]);
+ enic_synchronize_irqs(enic);
+ err = vnic_rq_disable(&enic->rq[0]);
+ if (err) {
+ netdev_err(netdev, "Unable to disable RQ.\n");
+ return;
+ }
+ vnic_rq_clean(&enic->rq[0], enic_free_rq_buf);
+ vnic_cq_clean(&enic->cq[0]);
+ vnic_intr_clean(&enic->intr[0]);
+
+ /* Fill RQ with new_mtu-sized buffers */
+ netdev->mtu = new_mtu;
+ vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf);
+ /* Need at least one buffer on ring to get going */
+ if (vnic_rq_desc_used(&enic->rq[0]) == 0) {
+ netdev_err(netdev, "Unable to alloc receive buffers.\n");
+ return;
+ }
+
+ /* Start RQ */
+ vnic_rq_enable(&enic->rq[0]);
+ napi_enable(&enic->napi[0]);
+ vnic_intr_unmask(&enic->intr[0]);
+ enic_notify_timer_start(enic);
+
+ rtnl_unlock();
+
+ netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu);
+}
+
#ifdef CONFIG_NET_POLL_CONTROLLER
static void enic_poll_controller(struct net_device *netdev)
{
@@ -1718,8 +1757,12 @@ static void enic_poll_controller(struct net_device *netdev)
enic_isr_msix_rq(enic->msix_entry[intr].vector,
&enic->napi[i]);
}
- intr = enic_msix_wq_intr(enic, i);
- enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+
+ for (i = 0; i < enic->wq_count; i++) {
+ intr = enic_msix_wq_intr(enic, i);
+ enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+ }
+
break;
case VNIC_DEV_INTR_MODE_MSI:
enic_isr_msi(enic->pdev->irq, enic);
@@ -2057,13 +2100,12 @@ static const struct net_device_ops enic_netdev_dynamic_ops = {
.ndo_open = enic_open,
.ndo_stop = enic_stop,
.ndo_start_xmit = enic_hard_start_xmit,
- .ndo_get_stats = enic_get_stats,
+ .ndo_get_stats64 = enic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_rx_mode = enic_set_rx_mode,
.ndo_set_multicast_list = enic_set_rx_mode,
.ndo_set_mac_address = enic_set_mac_address_dynamic,
.ndo_change_mtu = enic_change_mtu,
- .ndo_vlan_rx_register = enic_vlan_rx_register,
.ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
.ndo_tx_timeout = enic_tx_timeout,
@@ -2079,13 +2121,12 @@ static const struct net_device_ops enic_netdev_ops = {
.ndo_open = enic_open,
.ndo_stop = enic_stop,
.ndo_start_xmit = enic_hard_start_xmit,
- .ndo_get_stats = enic_get_stats,
+ .ndo_get_stats64 = enic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = enic_set_mac_address,
.ndo_set_rx_mode = enic_set_rx_mode,
.ndo_set_multicast_list = enic_set_rx_mode,
.ndo_change_mtu = enic_change_mtu,
- .ndo_vlan_rx_register = enic_vlan_rx_register,
.ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
.ndo_tx_timeout = enic_tx_timeout,
@@ -2112,6 +2153,14 @@ static int enic_dev_init(struct enic *enic)
unsigned int i;
int err;
+ /* Get interrupt coalesce timer info */
+ err = enic_dev_intr_coal_timer_info(enic);
+ if (err) {
+ dev_warn(dev, "Using default conversion factor for "
+ "interrupt coalesce timer\n");
+ vnic_dev_intr_coal_timer_info_default(enic->vdev);
+ }
+
/* Get vNIC configuration
*/
@@ -2345,6 +2394,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
enic->notify_timer.data = (unsigned long)enic;
INIT_WORK(&enic->reset, enic_reset);
+ INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work);
for (i = 0; i < enic->wq_count; i++)
spin_lock_init(&enic->wq_lock[i]);
@@ -2427,6 +2477,7 @@ static void __devexit enic_remove(struct pci_dev *pdev)
struct enic *enic = netdev_priv(netdev);
cancel_work_sync(&enic->reset);
+ cancel_work_sync(&enic->change_mtu_work);
unregister_netdev(netdev);
enic_dev_deinit(enic);
vnic_dev_close(enic->vdev);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-14 10:53:23 +0000