The LIF is the Logical Interface, which represents the external
connections. The NIC can multiplex many LIFs to a single port,
but in most setups, LIF0 is the primary control for the port.
Signed-off-by: Shannon Nelson <snel...@pensando.io>
---
drivers/net/ethernet/pensando/ionic/Makefile | 3 +-
drivers/net/ethernet/pensando/ionic/ionic.h | 8 +-
.../net/ethernet/pensando/ionic/ionic_bus.h | 2 +
.../ethernet/pensando/ionic/ionic_bus_pci.c | 48 +++
.../ethernet/pensando/ionic/ionic_debugfs.c | 47 +++
.../ethernet/pensando/ionic/ionic_debugfs.h | 6 +
.../net/ethernet/pensando/ionic/ionic_dev.c | 34 ++
.../net/ethernet/pensando/ionic/ionic_dev.h | 7 +
.../net/ethernet/pensando/ionic/ionic_lif.c | 292 ++++++++++++++++++
.../net/ethernet/pensando/ionic/ionic_lif.h | 70 +++++
.../net/ethernet/pensando/ionic/ionic_main.c | 1 +
11 files changed, 516 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_lif.c
create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_lif.h
diff --git a/drivers/net/ethernet/pensando/ionic/Makefile
b/drivers/net/ethernet/pensando/ionic/Makefile
index 49a8e28a5c84..04d519d00be6 100644
--- a/drivers/net/ethernet/pensando/ionic/Makefile
+++ b/drivers/net/ethernet/pensando/ionic/Makefile
@@ -3,4 +3,5 @@
obj-$(CONFIG_IONIC) := ionic.o
-ionic-y := ionic_main.o ionic_bus_pci.o ionic_dev.o ionic_debugfs.o
+ionic-y := ionic_main.o ionic_bus_pci.o ionic_dev.o ionic_debugfs.o \
+ ionic_lif.o
diff --git a/drivers/net/ethernet/pensando/ionic/ionic.h
b/drivers/net/ethernet/pensando/ionic/ionic.h
index f77712feef5c..afff2e074f1a 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic.h
@@ -6,7 +6,6 @@
#include "ionic_if.h"
#include "ionic_dev.h"
-#include "ionic_debugfs.h"
#define DRV_NAME "ionic"
#define DRV_DESCRIPTION "Pensando Ethernet NIC Driver"
@@ -32,6 +31,13 @@ struct ionic {
struct ionic_dev_bar bars[IONIC_BARS_MAX];
unsigned int num_bars;
struct identity ident;
+ struct list_head lifs;
+ unsigned int nnqs_per_lif;
+ unsigned int neqs_per_lif;
+ unsigned int ntxqs_per_lif;
+ unsigned int nrxqs_per_lif;
+ DECLARE_BITMAP(lifbits, IONIC_LIFS_MAX);
+ unsigned int nintrs;
};
int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_wait);
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus.h
b/drivers/net/ethernet/pensando/ionic/ionic_bus.h
index 24b4c01ec03f..3b1e2d0ebf8f 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus.h
@@ -5,6 +5,8 @@
#define _IONIC_BUS_H_
const char *ionic_bus_info(struct ionic *ionic);
+int ionic_bus_alloc_irq_vectors(struct ionic *ionic, unsigned int nintrs);
+void ionic_bus_free_irq_vectors(struct ionic *ionic);
int ionic_bus_register_driver(void);
void ionic_bus_unregister_driver(void);
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
index 7a41f8995c35..0ed724efe117 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
@@ -8,6 +8,8 @@
#include "ionic.h"
#include "ionic_bus.h"
+#include "ionic_lif.h"
+#include "ionic_debugfs.h"
/* Supported devices */
static const struct pci_device_id ionic_id_table[] = {
@@ -22,6 +24,17 @@ const char *ionic_bus_info(struct ionic *ionic)
return pci_name(ionic->pdev);
}
+int ionic_bus_alloc_irq_vectors(struct ionic *ionic, unsigned int nintrs)
+{
+ return pci_alloc_irq_vectors(ionic->pdev, nintrs, nintrs,
+ PCI_IRQ_MSIX);
+}
+
+void ionic_bus_free_irq_vectors(struct ionic *ionic)
+{
+ pci_free_irq_vectors(ionic->pdev);
+}
+
static int ionic_map_bars(struct ionic *ionic)
{
struct pci_dev *pdev = ionic->pdev;
@@ -150,8 +163,40 @@ static int ionic_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
goto err_out_reset;
}
+ /* Configure LIFs */
+ err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC,
+ &ionic->ident.lif);
+ if (err) {
+ dev_err(dev, "Cannot identify LIFs: %d, aborting\n", err);
+ goto err_out_port_reset;
+ }
+
+ err = ionic_lifs_size(ionic);
+ if (err) {
+ dev_err(dev, "Cannot size LIFs: %d, aborting\n", err);
+ goto err_out_port_reset;
+ }
+
+ err = ionic_lifs_alloc(ionic);
+ if (err) {
+ dev_err(dev, "Cannot allocate LIFs: %d, aborting\n", err);
+ goto err_out_free_irqs;
+ }
+
+ err = ionic_lifs_init(ionic);
+ if (err) {
+ dev_err(dev, "Cannot init LIFs: %d, aborting\n", err);
+ goto err_out_free_lifs;
+ }
+
return 0;
+err_out_free_lifs:
+ ionic_lifs_free(ionic);
+err_out_free_irqs:
+ ionic_bus_free_irq_vectors(ionic);
+err_out_port_reset:
+ ionic_port_reset(ionic);
err_out_reset:
ionic_reset(ionic);
err_out_teardown:
@@ -177,6 +222,9 @@ static void ionic_remove(struct pci_dev *pdev)
struct ionic *ionic = pci_get_drvdata(pdev);
if (ionic) {
+ ionic_lifs_deinit(ionic);
+ ionic_lifs_free(ionic);
+ ionic_bus_free_irq_vectors(ionic);
ionic_port_reset(ionic);
ionic_reset(ionic);
ionic_dev_teardown(ionic);
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
index c33a8bfcbcd4..a2a566695f63 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
@@ -1,10 +1,12 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
+#include <linux/pci.h>
#include <linux/netdevice.h>
#include "ionic.h"
#include "ionic_bus.h"
+#include "ionic_lif.h"
#include "ionic_debugfs.h"
#ifdef CONFIG_DEBUG_FS
@@ -64,4 +66,49 @@ int ionic_debugfs_add_ident(struct ionic *ionic)
ionic, &identity_fops) ? 0 : -ENOTSUPP;
}
+int ionic_debugfs_add_sizes(struct ionic *ionic)
+{
+ debugfs_create_u32("nlifs", 0400, ionic->dentry,
+ (u32 *)&ionic->ident.dev.nlifs);
+ debugfs_create_u32("nintrs", 0400, ionic->dentry, &ionic->nintrs);
+
+ debugfs_create_u32("ntxqs_per_lif", 0400, ionic->dentry,
+ (u32
*)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_TXQ]);
+ debugfs_create_u32("nrxqs_per_lif", 0400, ionic->dentry,
+ (u32
*)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_RXQ]);
+
+ return 0;
+}
+
+static int netdev_show(struct seq_file *seq, void *v)
+{
+ struct net_device *netdev = seq->private;
+
+ seq_printf(seq, "%s\n", netdev->name);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(netdev);
+
+int ionic_debugfs_add_lif(struct lif *lif)
+{
+ struct dentry *netdev_dentry;
+
+ lif->dentry = debugfs_create_dir(lif->name, lif->ionic->dentry);
+ if (IS_ERR_OR_NULL(lif->dentry))
+ return PTR_ERR(lif->dentry);
+
+ netdev_dentry = debugfs_create_file("netdev", 0400, lif->dentry,
+ lif->netdev, &netdev_fops);
+ if (IS_ERR_OR_NULL(netdev_dentry))
+ return PTR_ERR(netdev_dentry);
+
+ return 0;
+}
+
+void ionic_debugfs_del_lif(struct lif *lif)
+{
+ debugfs_remove_recursive(lif->dentry);
+ lif->dentry = NULL;
+}
#endif
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h
b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h
index c3958b0c15b1..cb00166e7c30 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_debugfs.h
@@ -15,6 +15,9 @@ void ionic_debugfs_del_dev(struct ionic *ionic);
int ionic_debugfs_add_bars(struct ionic *ionic);
int ionic_debugfs_add_dev_cmd(struct ionic *ionic);
int ionic_debugfs_add_ident(struct ionic *ionic);
+int ionic_debugfs_add_sizes(struct ionic *ionic);
+int ionic_debugfs_add_lif(struct lif *lif);
+void ionic_debugfs_del_lif(struct lif *lif);
#else
static inline void ionic_debugfs_create(void) { }
static inline void ionic_debugfs_destroy(void) { }
@@ -23,6 +26,9 @@ static inline void ionic_debugfs_del_dev(struct ionic *ionic)
{ }
static inline int ionic_debugfs_add_bars(struct ionic *ionic) { return 0; }
static inline int ionic_debugfs_add_dev_cmd(struct ionic *ionic) { return 0; }
static inline int ionic_debugfs_add_ident(struct ionic *ionic) { return 0; }
+static inline int ionic_debugfs_add_sizes(struct ionic *ionic) { return 0; }
+static inline int ionic_debugfs_add_lif(struct lif *lif) { return 0; }
+static inline void ionic_debugfs_del_lif(struct lif *lif) { return 0; }
#endif
#endif /* _IONIC_DEBUGFS_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index e2eda2bedac6..59d863e45072 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -246,3 +246,37 @@ void ionic_dev_cmd_port_loopback(struct ionic_dev *idev,
u8 loopback_mode)
ionic_dev_cmd_go(idev, &cmd);
}
+
+/* LIF commands */
+void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver)
+{
+ union dev_cmd cmd = {
+ .lif_identify.opcode = CMD_OPCODE_LIF_IDENTIFY,
+ .lif_identify.type = type,
+ .lif_identify.ver = ver,
+ };
+
+ ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
+ dma_addr_t info_pa)
+{
+ union dev_cmd cmd = {
+ .lif_init.opcode = CMD_OPCODE_LIF_INIT,
+ .lif_init.index = cpu_to_le16(lif_index),
+ .lif_init.info_pa = cpu_to_le64(info_pa),
+ };
+
+ ionic_dev_cmd_go(idev, &cmd);
+}
+
+void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index)
+{
+ union dev_cmd cmd = {
+ .lif_init.opcode = CMD_OPCODE_LIF_RESET,
+ .lif_init.index = cpu_to_le16(lif_index),
+ };
+
+ ionic_dev_cmd_go(idev, &cmd);
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index fe5e1b0e8d55..a8a84734b433 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -10,6 +10,8 @@
#include "ionic_if.h"
#include "ionic_regs.h"
+#define IONIC_LIFS_MAX 1024
+
struct ionic_dev_bar {
void __iomem *vaddr;
phys_addr_t bus_addr;
@@ -156,4 +158,9 @@ void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8
fec_type);
void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
void ionic_dev_cmd_port_loopback(struct ionic_dev *idev, u8 loopback_mode);
+void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
+void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
+ dma_addr_t addr);
+void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
+
#endif /* _IONIC_DEV_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
new file mode 100644
index 000000000000..e32ce2a3d0ce
--- /dev/null
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/cpumask.h>
+
+#include "ionic.h"
+#include "ionic_bus.h"
+#include "ionic_lif.h"
+#include "ionic_debugfs.h"
+
+static struct lif *ionic_lif_alloc(struct ionic *ionic, unsigned int index)
+{
+ struct device *dev = ionic->dev;
+ struct net_device *netdev;
+ struct lif *lif;
+ int err;
+
+ netdev = alloc_etherdev_mqs(sizeof(*lif),
+ ionic->ntxqs_per_lif, ionic->ntxqs_per_lif);
+ if (!netdev) {
+ dev_err(dev, "Cannot allocate netdev, aborting\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ netif_set_real_num_tx_queues(netdev, ionic->ntxqs_per_lif);
+ netif_set_real_num_rx_queues(netdev, ionic->nrxqs_per_lif);
+
+ SET_NETDEV_DEV(netdev, dev);
+
+ lif = netdev_priv(netdev);
+ lif->netdev = netdev;
+
+ lif->neqs = ionic->neqs_per_lif;
+ lif->nxqs = ionic->ntxqs_per_lif;
+
+ lif->ionic = ionic;
+ lif->index = index;
+
+ snprintf(lif->name, sizeof(lif->name), "lif%u", index);
+
+ /* allocate lif info */
+ lif->info_sz = ALIGN(sizeof(*lif->info), PAGE_SIZE);
+ lif->info = dma_alloc_coherent(dev, lif->info_sz,
+ &lif->info_pa, GFP_KERNEL);
+ if (!lif->info) {
+ dev_err(dev, "Failed to allocate lif info, aborting\n");
+ err = -ENOMEM;
+ goto err_out_free_netdev;
+ }
+
+ list_add_tail(&lif->list, &ionic->lifs);
+
+ return lif;
+
+err_out_free_netdev:
+ free_netdev(lif->netdev);
+ lif = NULL;
+
+ return ERR_PTR(err);
+}
+
+int ionic_lifs_alloc(struct ionic *ionic)
+{
+ struct lif *lif;
+
+ INIT_LIST_HEAD(&ionic->lifs);
+
+ /* only build the first lif, others are for later features */
+ set_bit(0, ionic->lifbits);
+ lif = ionic_lif_alloc(ionic, 0);
+
+ return PTR_ERR_OR_ZERO(lif);
+}
+
+static void ionic_lif_reset(struct lif *lif)
+{
+ struct ionic_dev *idev = &lif->ionic->idev;
+
+ mutex_lock(&lif->ionic->dev_cmd_lock);
+ ionic_dev_cmd_lif_reset(idev, lif->index);
+ ionic_dev_cmd_wait(lif->ionic, devcmd_timeout);
+ mutex_unlock(&lif->ionic->dev_cmd_lock);
+}
+
+static void ionic_lif_free(struct lif *lif)
+{
+ struct device *dev = lif->ionic->dev;
+
+ ionic_lif_reset(lif);
+
+ /* free lif info */
+ dma_free_coherent(dev, lif->info_sz, lif->info, lif->info_pa);
+ lif->info = NULL;
+ lif->info_pa = 0;
+
+ /* free netdev & lif */
+ ionic_debugfs_del_lif(lif);
+ list_del(&lif->list);
+ free_netdev(lif->netdev);
+}
+
+void ionic_lifs_free(struct ionic *ionic)
+{
+ struct list_head *cur, *tmp;
+ struct lif *lif;
+
+ list_for_each_safe(cur, tmp, &ionic->lifs) {
+ lif = list_entry(cur, struct lif, list);
+
+ ionic_lif_free(lif);
+ }
+}
+
+static void ionic_lif_deinit(struct lif *lif)
+{
+ if (!test_bit(LIF_INITED, lif->state))
+ return;
+
+ clear_bit(LIF_INITED, lif->state);
+
+ ionic_lif_reset(lif);
+}
+
+void ionic_lifs_deinit(struct ionic *ionic)
+{
+ struct list_head *cur, *tmp;
+ struct lif *lif;
+
+ list_for_each_safe(cur, tmp, &ionic->lifs) {
+ lif = list_entry(cur, struct lif, list);
+ ionic_lif_deinit(lif);
+ }
+}
+
+static int ionic_lif_init(struct lif *lif)
+{
+ struct ionic_dev *idev = &lif->ionic->idev;
+ struct lif_init_comp comp;
+ int err;
+
+ ionic_debugfs_add_lif(lif);
+
+ mutex_lock(&lif->ionic->dev_cmd_lock);
+ ionic_dev_cmd_lif_init(idev, lif->index, lif->info_pa);
+ err = ionic_dev_cmd_wait(lif->ionic, devcmd_timeout);
+ ionic_dev_cmd_comp(idev, (union dev_cmd_comp *)&comp);
+ mutex_unlock(&lif->ionic->dev_cmd_lock);
+ if (err)
+ return err;
+
+ lif->hw_index = le16_to_cpu(comp.hw_index);
+
+ set_bit(LIF_INITED, lif->state);
+
+ return 0;
+}
+
+int ionic_lifs_init(struct ionic *ionic)
+{
+ struct list_head *cur, *tmp;
+ struct lif *lif;
+ int err;
+
+ list_for_each_safe(cur, tmp, &ionic->lifs) {
+ lif = list_entry(cur, struct lif, list);
+ err = ionic_lif_init(lif);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
+ union lif_identity *lid)
+{
+ struct ionic_dev *idev = &ionic->idev;
+ size_t sz;
+ int err;
+
+ sz = min(sizeof(*lid), sizeof(idev->dev_cmd_regs->data));
+
+ mutex_lock(&ionic->dev_cmd_lock);
+ ionic_dev_cmd_lif_identify(idev, lif_type, IONIC_IDENTITY_VERSION_1);
+ err = ionic_dev_cmd_wait(ionic, devcmd_timeout);
+ memcpy_fromio(lid, &idev->dev_cmd_regs->data, sz);
+ mutex_unlock(&ionic->dev_cmd_lock);
+ if (err)
+ return (err);
+
+ dev_dbg(ionic->dev, "capabilities 0x%llx\n",
+ le64_to_cpu(lid->capabilities));
+
+ dev_dbg(ionic->dev, "eth.max_ucast_filters %d\n",
+ le32_to_cpu(lid->eth.max_ucast_filters));
+ dev_dbg(ionic->dev, "eth.max_mcast_filters %d\n",
+ le32_to_cpu(lid->eth.max_mcast_filters));
+ dev_dbg(ionic->dev, "eth.features 0x%llx\n",
+ le64_to_cpu(lid->eth.config.features));
+ dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_ADMINQ] %d\n",
+ le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_ADMINQ]));
+ dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_NOTIFYQ] %d\n",
+ le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_NOTIFYQ]));
+ dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_RXQ] %d\n",
+ le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_RXQ]));
+ dev_dbg(ionic->dev, "eth.queue_count[IONIC_QTYPE_TXQ] %d\n",
+ le32_to_cpu(lid->eth.config.queue_count[IONIC_QTYPE_TXQ]));
+ dev_dbg(ionic->dev, "eth.config.name %s\n", lid->eth.config.name);
+ dev_dbg(ionic->dev, "eth.config.mac %pM\n", lid->eth.config.mac);
+ dev_dbg(ionic->dev, "eth.config.mtu %d\n",
+ le32_to_cpu(lid->eth.config.mtu));
+
+ return 0;
+}
+
+int ionic_lifs_size(struct ionic *ionic)
+{
+ struct identity *ident = &ionic->ident;
+ union lif_config *lc = &ident->lif.eth.config;
+ unsigned int nintrs, dev_nintrs;
+ unsigned int ntxqs_per_lif;
+ unsigned int nrxqs_per_lif;
+ unsigned int neqs_per_lif;
+ unsigned int nnqs_per_lif;
+ unsigned int nxqs, neqs;
+ unsigned int min_intrs;
+ int err;
+
+ dev_nintrs = le32_to_cpu(ident->dev.nintrs);
+ neqs_per_lif = le32_to_cpu(ident->lif.rdma.eq_qtype.qid_count);
+ nnqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_NOTIFYQ]);
+ ntxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_TXQ]);
+ nrxqs_per_lif = le32_to_cpu(lc->queue_count[IONIC_QTYPE_RXQ]);
+
+ nxqs = min(ntxqs_per_lif, nrxqs_per_lif);
+ nxqs = min(nxqs, num_online_cpus());
+ neqs = min(neqs_per_lif, num_online_cpus());
+
+try_again:
+ /* interrupt usage:
+ * 1 for master lif adminq/notifyq
+ * 1 for each CPU for master lif TxRx queue pairs
+ * whatever's left is for RDMA queues
+ */
+ nintrs = 1 + nxqs + neqs;
+ min_intrs = 2; /* adminq + 1 TxRx queue pair */
+
+ if (nintrs > dev_nintrs)
+ goto try_fewer;
+
+ err = ionic_bus_alloc_irq_vectors(ionic, nintrs);
+ if (err < 0 && err != -ENOSPC) {
+ dev_err(ionic->dev, "Can't get intrs from OS: %d\n", err);
+ return err;
+ }
+ if (err == -ENOSPC)
+ goto try_fewer;
+
+ if (err != nintrs) {
+ ionic_bus_free_irq_vectors(ionic);
+ goto try_fewer;
+ }
+
+ ionic->nnqs_per_lif = nnqs_per_lif;
+ ionic->neqs_per_lif = neqs;
+ ionic->ntxqs_per_lif = nxqs;
+ ionic->nrxqs_per_lif = nxqs;
+ ionic->nintrs = nintrs;
+
+ ionic_debugfs_add_sizes(ionic);
+
+ return 0;
+
+try_fewer:
+ if (nnqs_per_lif > 1) {
+ nnqs_per_lif >>= 1;
+ goto try_again;
+ }
+ if (neqs > 1) {
+ neqs >>= 1;
+ goto try_again;
+ }
+ if (nxqs > 1) {
+ nxqs >>= 1;
+ goto try_again;
+ }
+ dev_err(ionic->dev, "Can't get minimum %d intrs from OS\n", min_intrs);
+ return -ENOSPC;
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
new file mode 100644
index 000000000000..37f79d36744a
--- /dev/null
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
+
+#ifndef _IONIC_LIF_H_
+#define _IONIC_LIF_H_
+
+#include <linux/pci.h>
+
+enum lif_state_flags {
+ LIF_INITED,
+
+ /* leave this as last */
+ LIF_STATE_SIZE
+};
+
+#define LIF_NAME_MAX_SZ (32)
+struct lif {
+ char name[LIF_NAME_MAX_SZ];
+ struct list_head list;
+ struct net_device *netdev;
+ DECLARE_BITMAP(state, LIF_STATE_SIZE);
+ struct ionic *ionic;
+ bool registered;
+ unsigned int index;
+ unsigned int hw_index;
+ unsigned int neqs;
+ unsigned int nxqs;
+
+ struct lif_info *info;
+ dma_addr_t info_pa;
+ u32 info_sz;
+
+ struct dentry *dentry;
+ u32 flags;
+};
+
+static inline bool ionic_is_pf(struct ionic *ionic)
+{
+ return ionic->pdev &&
+ ionic->pdev->device == PCI_DEVICE_ID_PENSANDO_IONIC_ETH_PF;
+}
+
+static inline bool ionic_is_vf(struct ionic *ionic)
+{
+ return ionic->pdev &&
+ ionic->pdev->device == PCI_DEVICE_ID_PENSANDO_IONIC_ETH_VF;
+}
+
+static inline bool ionic_is_25g(struct ionic *ionic)
+{
+ return ionic_is_pf(ionic) &&
+ ionic->pdev->subsystem_device == IONIC_SUBDEV_ID_NAPLES_25;
+}
+
+static inline bool ionic_is_100g(struct ionic *ionic)
+{
+ return ionic_is_pf(ionic) &&
+ (ionic->pdev->subsystem_device == IONIC_SUBDEV_ID_NAPLES_100_4 ||
+ ionic->pdev->subsystem_device == IONIC_SUBDEV_ID_NAPLES_100_8);
+}
+
+int ionic_lifs_alloc(struct ionic *ionic);
+void ionic_lifs_free(struct ionic *ionic);
+void ionic_lifs_deinit(struct ionic *ionic);
+int ionic_lifs_init(struct ionic *ionic);
+int ionic_lif_identify(struct ionic *ionic, u8 lif_type,
+ union lif_identity *lif_ident);
+int ionic_lifs_size(struct ionic *ionic);
+
+#endif /* _IONIC_LIF_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c
b/drivers/net/ethernet/pensando/ionic/ionic_main.c
index 78eab326b067..b732e7345550 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
@@ -8,6 +8,7 @@
#include "ionic.h"
#include "ionic_bus.h"
+#include "ionic_lif.h"
#include "ionic_debugfs.h"
MODULE_DESCRIPTION(DRV_DESCRIPTION);
--
2.17.1
