#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/rwsem.h>
+#include <linux/mutex.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#define KNI_MAX_DEVICES 32
-extern void kni_net_rx(struct kni_dev *kni);
-extern void kni_net_init(struct net_device *dev);
-extern void kni_net_config_lo_mode(char *lo_str);
-extern void kni_net_poll_resp(struct kni_dev *kni);
-extern void kni_set_ethtool_ops(struct net_device *netdev);
-
-extern int ixgbe_kni_probe(struct pci_dev *pdev, struct net_device **lad_dev);
-extern void ixgbe_kni_remove(struct pci_dev *pdev);
-extern int igb_kni_probe(struct pci_dev *pdev, struct net_device **lad_dev);
-extern void igb_kni_remove(struct pci_dev *pdev);
-
-static int kni_open(struct inode *inode, struct file *file);
-static int kni_release(struct inode *inode, struct file *file);
-static int kni_ioctl(struct inode *inode, unsigned int ioctl_num,
- unsigned long ioctl_param);
-static int kni_compat_ioctl(struct inode *inode, unsigned int ioctl_num,
- unsigned long ioctl_param);
-static int kni_dev_remove(struct kni_dev *dev);
-
-static int __init kni_parse_kthread_mode(void);
-
-/* KNI processing for single kernel thread mode */
-static int kni_thread_single(void *unused);
-/* KNI processing for multiple kernel thread mode */
-static int kni_thread_multiple(void *param);
-
-static struct file_operations kni_fops = {
- .owner = THIS_MODULE,
- .open = kni_open,
- .release = kni_release,
- .unlocked_ioctl = (void *)kni_ioctl,
- .compat_ioctl = (void *)kni_compat_ioctl,
-};
-
-static struct miscdevice kni_misc = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = KNI_DEVICE,
- .fops = &kni_fops,
-};
+extern const struct pci_device_id ixgbe_pci_tbl[];
+extern const struct pci_device_id igb_pci_tbl[];
/* loopback mode */
-static char *lo_mode = NULL;
+static char *lo_mode;
/* Kernel thread mode */
-static char *kthread_mode = NULL;
-static unsigned multiple_kthread_on = 0;
+static char *kthread_mode;
+static uint32_t multiple_kthread_on;
#define KNI_DEV_IN_USE_BIT_NUM 0 /* Bit number for device in use */
struct kni_net {
unsigned long device_in_use; /* device in use flag */
+ struct mutex kni_kthread_lock;
struct task_struct *kni_kthread;
struct rw_semaphore kni_list_lock;
struct list_head kni_list_head;
};
-static int __net_init kni_init_net(struct net *net)
+static int __net_init
+kni_init_net(struct net *net)
{
#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
struct kni_net *knet = net_generic(net, kni_net_id);
+
+ memset(knet, 0, sizeof(*knet));
#else
struct kni_net *knet;
int ret;
- knet = kmalloc(sizeof(struct kni_net), GFP_KERNEL);
+ knet = kzalloc(sizeof(struct kni_net), GFP_KERNEL);
if (!knet) {
ret = -ENOMEM;
return ret;
/* Clear the bit of device in use */
clear_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use);
+ mutex_init(&knet->kni_kthread_lock);
+
init_rwsem(&knet->kni_list_lock);
INIT_LIST_HEAD(&knet->kni_list_head);
#endif
}
-static void __net_exit kni_exit_net(struct net *net)
+static void __net_exit
+kni_exit_net(struct net *net)
{
-#ifndef HAVE_SIMPLIFIED_PERNET_OPERATIONS
- struct kni_net *knet = net_generic(net, kni_net_id);
+ struct kni_net *knet __maybe_unused;
+
+ knet = net_generic(net, kni_net_id);
+ mutex_destroy(&knet->kni_kthread_lock);
+#ifndef HAVE_SIMPLIFIED_PERNET_OPERATIONS
kfree(knet);
#endif
}
#endif
};
-static int __init
-kni_init(void)
+static int
+kni_thread_single(void *data)
{
- int rc;
-
- KNI_PRINT("######## DPDK kni module loading ########\n");
-
- if (kni_parse_kthread_mode() < 0) {
- KNI_ERR("Invalid parameter for kthread_mode\n");
- return -EINVAL;
- }
+ struct kni_net *knet = data;
+ int j;
+ struct kni_dev *dev;
-#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
- rc = register_pernet_subsys(&kni_net_ops);
+ while (!kthread_should_stop()) {
+ down_read(&knet->kni_list_lock);
+ for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
+ list_for_each_entry(dev, &knet->kni_list_head, list) {
+#ifdef RTE_KNI_VHOST
+ kni_chk_vhost_rx(dev);
#else
- rc = register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
+ kni_net_rx(dev);
+#endif
+ kni_net_poll_resp(dev);
+ }
+ }
+ up_read(&knet->kni_list_lock);
+#ifdef RTE_KNI_PREEMPT_DEFAULT
+ /* reschedule out for a while */
+ schedule_timeout_interruptible(
+ usecs_to_jiffies(KNI_KTHREAD_RESCHEDULE_INTERVAL));
#endif
- if (rc)
- return -EPERM;
-
- rc = misc_register(&kni_misc);
- if (rc != 0) {
- KNI_ERR("Misc registration failed\n");
- goto out;
}
- /* Configure the lo mode according to the input parameter */
- kni_net_config_lo_mode(lo_mode);
-
- KNI_PRINT("######## DPDK kni module loaded ########\n");
-
return 0;
-
-out:
-#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
- unregister_pernet_subsys(&kni_net_ops);
-#else
- register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
-#endif
- return rc;
}
-static void __exit
-kni_exit(void)
+static int
+kni_thread_multiple(void *param)
{
- misc_deregister(&kni_misc);
-#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
- unregister_pernet_subsys(&kni_net_ops);
+ int j;
+ struct kni_dev *dev = (struct kni_dev *)param;
+
+ while (!kthread_should_stop()) {
+ for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
+#ifdef RTE_KNI_VHOST
+ kni_chk_vhost_rx(dev);
#else
- register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
+ kni_net_rx(dev);
#endif
- KNI_PRINT("####### DPDK kni module unloaded #######\n");
-}
-
-static int __init
-kni_parse_kthread_mode(void)
-{
- if (!kthread_mode)
- return 0;
-
- if (strcmp(kthread_mode, "single") == 0)
- return 0;
- else if (strcmp(kthread_mode, "multiple") == 0)
- multiple_kthread_on = 1;
- else
- return -1;
+ kni_net_poll_resp(dev);
+ }
+#ifdef RTE_KNI_PREEMPT_DEFAULT
+ schedule_timeout_interruptible(
+ usecs_to_jiffies(KNI_KTHREAD_RESCHEDULE_INTERVAL));
+#endif
+ }
return 0;
}
if (test_and_set_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use))
return -EBUSY;
- /* Create kernel thread for single mode */
- if (multiple_kthread_on == 0) {
- KNI_PRINT("Single kernel thread for all KNI devices\n");
- /* Create kernel thread for RX */
- knet->kni_kthread = kthread_run(kni_thread_single, (void *)knet,
- "kni_single");
- if (IS_ERR(knet->kni_kthread)) {
- KNI_ERR("Unable to create kernel threaed\n");
- return PTR_ERR(knet->kni_kthread);
- }
- } else
- KNI_PRINT("Multiple kernel thread mode enabled\n");
-
file->private_data = get_net(net);
- KNI_PRINT("/dev/kni opened\n");
+ pr_debug("/dev/kni opened\n");
+
+ return 0;
+}
+
+static int
+kni_dev_remove(struct kni_dev *dev)
+{
+ if (!dev)
+ return -ENODEV;
+
+ if (dev->pci_dev) {
+ if (pci_match_id(ixgbe_pci_tbl, dev->pci_dev))
+ ixgbe_kni_remove(dev->pci_dev);
+ else if (pci_match_id(igb_pci_tbl, dev->pci_dev))
+ igb_kni_remove(dev->pci_dev);
+ }
+
+ if (dev->net_dev) {
+ unregister_netdev(dev->net_dev);
+ free_netdev(dev->net_dev);
+ }
return 0;
}
/* Stop kernel thread for single mode */
if (multiple_kthread_on == 0) {
+ mutex_lock(&knet->kni_kthread_lock);
/* Stop kernel thread */
- kthread_stop(knet->kni_kthread);
- knet->kni_kthread = NULL;
+ if (knet->kni_kthread != NULL) {
+ kthread_stop(knet->kni_kthread);
+ knet->kni_kthread = NULL;
+ }
+ mutex_unlock(&knet->kni_kthread_lock);
}
down_write(&knet->kni_list_lock);
clear_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use);
put_net(net);
- KNI_PRINT("/dev/kni closed\n");
+ pr_debug("/dev/kni closed\n");
return 0;
}
static int
-kni_thread_single(void *data)
+kni_check_param(struct kni_dev *kni, struct rte_kni_device_info *dev)
{
- struct kni_net *knet = data;
- int j;
- struct kni_dev *dev;
+ if (!kni || !dev)
+ return -1;
- while (!kthread_should_stop()) {
- down_read(&knet->kni_list_lock);
- for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
- list_for_each_entry(dev, &knet->kni_list_head, list) {
-#ifdef RTE_KNI_VHOST
- kni_chk_vhost_rx(dev);
-#else
- kni_net_rx(dev);
-#endif
- kni_net_poll_resp(dev);
- }
- }
- up_read(&knet->kni_list_lock);
-#ifdef RTE_KNI_PREEMPT_DEFAULT
- /* reschedule out for a while */
- schedule_timeout_interruptible(usecs_to_jiffies( \
- KNI_KTHREAD_RESCHEDULE_INTERVAL));
-#endif
+ /* Check if network name has been used */
+ if (!strncmp(kni->name, dev->name, RTE_KNI_NAMESIZE)) {
+ pr_err("KNI name %s duplicated\n", dev->name);
+ return -1;
}
return 0;
}
static int
-kni_thread_multiple(void *param)
+kni_run_thread(struct kni_net *knet, struct kni_dev *kni, uint8_t force_bind)
{
- int j;
- struct kni_dev *dev = (struct kni_dev *)param;
-
- while (!kthread_should_stop()) {
- for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
-#ifdef RTE_KNI_VHOST
- kni_chk_vhost_rx(dev);
-#else
- kni_net_rx(dev);
-#endif
- kni_net_poll_resp(dev);
+ /**
+ * Create a new kernel thread for multiple mode, set its core affinity,
+ * and finally wake it up.
+ */
+ if (multiple_kthread_on) {
+ kni->pthread = kthread_create(kni_thread_multiple,
+ (void *)kni, "kni_%s", kni->name);
+ if (IS_ERR(kni->pthread)) {
+ kni_dev_remove(kni);
+ return -ECANCELED;
}
-#ifdef RTE_KNI_PREEMPT_DEFAULT
- schedule_timeout_interruptible(usecs_to_jiffies( \
- KNI_KTHREAD_RESCHEDULE_INTERVAL));
-#endif
- }
-
- return 0;
-}
-
-static int
-kni_dev_remove(struct kni_dev *dev)
-{
- if (!dev)
- return -ENODEV;
-
- switch (dev->device_id) {
- #define RTE_PCI_DEV_ID_DECL_IGB(vend, dev) case (dev):
- #include <rte_pci_dev_ids.h>
- igb_kni_remove(dev->pci_dev);
- break;
- #define RTE_PCI_DEV_ID_DECL_IXGBE(vend, dev) case (dev):
- #include <rte_pci_dev_ids.h>
- ixgbe_kni_remove(dev->pci_dev);
- break;
- default:
- break;
- }
-
- if (dev->net_dev) {
- unregister_netdev(dev->net_dev);
- free_netdev(dev->net_dev);
- }
- return 0;
-}
+ if (force_bind)
+ kthread_bind(kni->pthread, kni->core_id);
+ wake_up_process(kni->pthread);
+ } else {
+ mutex_lock(&knet->kni_kthread_lock);
+
+ if (knet->kni_kthread == NULL) {
+ knet->kni_kthread = kthread_create(kni_thread_single,
+ (void *)knet, "kni_single");
+ if (IS_ERR(knet->kni_kthread)) {
+ mutex_unlock(&knet->kni_kthread_lock);
+ kni_dev_remove(kni);
+ return -ECANCELED;
+ }
-static int
-kni_check_param(struct kni_dev *kni, struct rte_kni_device_info *dev)
-{
- if (!kni || !dev)
- return -1;
+ if (force_bind)
+ kthread_bind(knet->kni_kthread, kni->core_id);
+ wake_up_process(knet->kni_kthread);
+ }
- /* Check if network name has been used */
- if (!strncmp(kni->name, dev->name, RTE_KNI_NAMESIZE)) {
- KNI_ERR("KNI name %s duplicated\n", dev->name);
- return -1;
+ mutex_unlock(&knet->kni_kthread_lock);
}
return 0;
}
static int
-kni_ioctl_create(struct net *net,
- unsigned int ioctl_num, unsigned long ioctl_param)
+kni_ioctl_create(struct net *net, uint32_t ioctl_num,
+ unsigned long ioctl_param)
{
struct kni_net *knet = net_generic(net, kni_net_id);
int ret;
struct net_device *lad_dev = NULL;
struct kni_dev *kni, *dev, *n;
- printk(KERN_INFO "KNI: Creating kni...\n");
+ pr_info("Creating kni...\n");
/* Check the buffer size, to avoid warning */
if (_IOC_SIZE(ioctl_num) > sizeof(dev_info))
return -EINVAL;
/* Copy kni info from user space */
ret = copy_from_user(&dev_info, (void *)ioctl_param, sizeof(dev_info));
if (ret) {
- KNI_ERR("copy_from_user in kni_ioctl_create");
+ pr_err("copy_from_user in kni_ioctl_create");
return -EIO;
}
/**
- * Check if the cpu core id is valid for binding,
- * for multiple kernel thread mode.
+ * Check if the cpu core id is valid for binding.
*/
- if (multiple_kthread_on && dev_info.force_bind &&
- !cpu_online(dev_info.core_id)) {
- KNI_ERR("cpu %u is not online\n", dev_info.core_id);
+ if (dev_info.force_bind && !cpu_online(dev_info.core_id)) {
+ pr_err("cpu %u is not online\n", dev_info.core_id);
return -EINVAL;
}
#endif
kni_net_init);
if (net_dev == NULL) {
- KNI_ERR("error allocating device \"%s\"\n", dev_info.name);
+ pr_err("error allocating device \"%s\"\n", dev_info.name);
return -EBUSY;
}
kni->sync_va = dev_info.sync_va;
kni->sync_kva = phys_to_virt(dev_info.sync_phys);
- kni->mbuf_kva = phys_to_virt(dev_info.mbuf_phys);
- kni->mbuf_va = dev_info.mbuf_va;
-
#ifdef RTE_KNI_VHOST
kni->vhost_queue = NULL;
kni->vq_status = BE_STOP;
#endif
kni->mbuf_size = dev_info.mbuf_size;
- KNI_PRINT("tx_phys: 0x%016llx, tx_q addr: 0x%p\n",
+ pr_debug("tx_phys: 0x%016llx, tx_q addr: 0x%p\n",
(unsigned long long) dev_info.tx_phys, kni->tx_q);
- KNI_PRINT("rx_phys: 0x%016llx, rx_q addr: 0x%p\n",
+ pr_debug("rx_phys: 0x%016llx, rx_q addr: 0x%p\n",
(unsigned long long) dev_info.rx_phys, kni->rx_q);
- KNI_PRINT("alloc_phys: 0x%016llx, alloc_q addr: 0x%p\n",
+ pr_debug("alloc_phys: 0x%016llx, alloc_q addr: 0x%p\n",
(unsigned long long) dev_info.alloc_phys, kni->alloc_q);
- KNI_PRINT("free_phys: 0x%016llx, free_q addr: 0x%p\n",
+ pr_debug("free_phys: 0x%016llx, free_q addr: 0x%p\n",
(unsigned long long) dev_info.free_phys, kni->free_q);
- KNI_PRINT("req_phys: 0x%016llx, req_q addr: 0x%p\n",
+ pr_debug("req_phys: 0x%016llx, req_q addr: 0x%p\n",
(unsigned long long) dev_info.req_phys, kni->req_q);
- KNI_PRINT("resp_phys: 0x%016llx, resp_q addr: 0x%p\n",
+ pr_debug("resp_phys: 0x%016llx, resp_q addr: 0x%p\n",
(unsigned long long) dev_info.resp_phys, kni->resp_q);
- KNI_PRINT("mbuf_phys: 0x%016llx, mbuf_kva: 0x%p\n",
- (unsigned long long) dev_info.mbuf_phys, kni->mbuf_kva);
- KNI_PRINT("mbuf_va: 0x%p\n", dev_info.mbuf_va);
- KNI_PRINT("mbuf_size: %u\n", kni->mbuf_size);
+ pr_debug("mbuf_size: %u\n", kni->mbuf_size);
- KNI_DBG("PCI: %02x:%02x.%02x %04x:%04x\n",
+ pr_debug("PCI: %02x:%02x.%02x %04x:%04x\n",
dev_info.bus,
dev_info.devid,
dev_info.function,
/* Support Ethtool */
while (pci) {
- KNI_PRINT("pci_bus: %02x:%02x:%02x \n",
+ pr_debug("pci_bus: %02x:%02x:%02x\n",
pci->bus->number,
PCI_SLOT(pci->devfn),
PCI_FUNC(pci->devfn));
(PCI_SLOT(pci->devfn) == dev_info.devid) &&
(PCI_FUNC(pci->devfn) == dev_info.function)) {
found_pci = pci;
- switch (dev_info.device_id) {
- #define RTE_PCI_DEV_ID_DECL_IGB(vend, dev) case (dev):
- #include <rte_pci_dev_ids.h>
- ret = igb_kni_probe(found_pci, &lad_dev);
- break;
- #define RTE_PCI_DEV_ID_DECL_IXGBE(vend, dev) \
- case (dev):
- #include <rte_pci_dev_ids.h>
+
+ if (pci_match_id(ixgbe_pci_tbl, found_pci))
ret = ixgbe_kni_probe(found_pci, &lad_dev);
- break;
- default:
+ else if (pci_match_id(igb_pci_tbl, found_pci))
+ ret = igb_kni_probe(found_pci, &lad_dev);
+ else
ret = -1;
- break;
- }
- KNI_DBG("PCI found: pci=0x%p, lad_dev=0x%p\n",
+ pr_debug("PCI found: pci=0x%p, lad_dev=0x%p\n",
pci, lad_dev);
if (ret == 0) {
kni->lad_dev = lad_dev;
kni_set_ethtool_ops(kni->net_dev);
} else {
- KNI_ERR("Device not supported by ethtool");
+ pr_err("Device not supported by ethtool");
kni->lad_dev = NULL;
}
pci_dev_put(pci);
if (kni->lad_dev)
- memcpy(net_dev->dev_addr, kni->lad_dev->dev_addr, ETH_ALEN);
+ ether_addr_copy(net_dev->dev_addr, kni->lad_dev->dev_addr);
else
/*
* Generate random mac address. eth_random_addr() is the newer
ret = register_netdev(net_dev);
if (ret) {
- KNI_ERR("error %i registering device \"%s\"\n",
+ pr_err("error %i registering device \"%s\"\n",
ret, dev_info.name);
+ kni->net_dev = NULL;
kni_dev_remove(kni);
+ free_netdev(net_dev);
return -ENODEV;
}
kni_vhost_init(kni);
#endif
- /**
- * Create a new kernel thread for multiple mode, set its core affinity,
- * and finally wake it up.
- */
- if (multiple_kthread_on) {
- kni->pthread = kthread_create(kni_thread_multiple,
- (void *)kni,
- "kni_%s", kni->name);
- if (IS_ERR(kni->pthread)) {
- kni_dev_remove(kni);
- return -ECANCELED;
- }
- if (dev_info.force_bind)
- kthread_bind(kni->pthread, kni->core_id);
- wake_up_process(kni->pthread);
- }
+ ret = kni_run_thread(knet, kni, dev_info.force_bind);
+ if (ret != 0)
+ return ret;
down_write(&knet->kni_list_lock);
list_add(&kni->list, &knet->kni_list_head);
}
static int
-kni_ioctl_release(struct net *net,
- unsigned int ioctl_num, unsigned long ioctl_param)
+kni_ioctl_release(struct net *net, uint32_t ioctl_num,
+ unsigned long ioctl_param)
{
struct kni_net *knet = net_generic(net, kni_net_id);
int ret = -EINVAL;
struct rte_kni_device_info dev_info;
if (_IOC_SIZE(ioctl_num) > sizeof(dev_info))
- return -EINVAL;
+ return -EINVAL;
ret = copy_from_user(&dev_info, (void *)ioctl_param, sizeof(dev_info));
if (ret) {
- KNI_ERR("copy_from_user in kni_ioctl_release");
+ pr_err("copy_from_user in kni_ioctl_release");
return -EIO;
}
break;
}
up_write(&knet->kni_list_lock);
- printk(KERN_INFO "KNI: %s release kni named %s\n",
+ pr_info("%s release kni named %s\n",
(ret == 0 ? "Successfully" : "Unsuccessfully"), dev_info.name);
return ret;
}
static int
-kni_ioctl(struct inode *inode,
- unsigned int ioctl_num,
- unsigned long ioctl_param)
+kni_ioctl(struct inode *inode, uint32_t ioctl_num, unsigned long ioctl_param)
{
int ret = -EINVAL;
struct net *net = current->nsproxy->net_ns;
- KNI_DBG("IOCTL num=0x%0x param=0x%0lx\n", ioctl_num, ioctl_param);
+ pr_debug("IOCTL num=0x%0x param=0x%0lx\n", ioctl_num, ioctl_param);
/*
* Switch according to the ioctl called
ret = kni_ioctl_release(net, ioctl_num, ioctl_param);
break;
default:
- KNI_DBG("IOCTL default\n");
+ pr_debug("IOCTL default\n");
break;
}
}
static int
-kni_compat_ioctl(struct inode *inode,
- unsigned int ioctl_num,
+kni_compat_ioctl(struct inode *inode, uint32_t ioctl_num,
unsigned long ioctl_param)
{
/* 32 bits app on 64 bits OS to be supported later */
- KNI_PRINT("Not implemented.\n");
+ pr_debug("Not implemented.\n");
return -EINVAL;
}
+static const struct file_operations kni_fops = {
+ .owner = THIS_MODULE,
+ .open = kni_open,
+ .release = kni_release,
+ .unlocked_ioctl = (void *)kni_ioctl,
+ .compat_ioctl = (void *)kni_compat_ioctl,
+};
+
+static struct miscdevice kni_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = KNI_DEVICE,
+ .fops = &kni_fops,
+};
+
+static int __init
+kni_parse_kthread_mode(void)
+{
+ if (!kthread_mode)
+ return 0;
+
+ if (strcmp(kthread_mode, "single") == 0)
+ return 0;
+ else if (strcmp(kthread_mode, "multiple") == 0)
+ multiple_kthread_on = 1;
+ else
+ return -1;
+
+ return 0;
+}
+
+static int __init
+kni_init(void)
+{
+ int rc;
+
+ if (kni_parse_kthread_mode() < 0) {
+ pr_err("Invalid parameter for kthread_mode\n");
+ return -EINVAL;
+ }
+
+ if (multiple_kthread_on == 0)
+ pr_debug("Single kernel thread for all KNI devices\n");
+ else
+ pr_debug("Multiple kernel thread mode enabled\n");
+
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ rc = register_pernet_subsys(&kni_net_ops);
+#else
+ rc = register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
+#endif
+ if (rc)
+ return -EPERM;
+
+ rc = misc_register(&kni_misc);
+ if (rc != 0) {
+ pr_err("Misc registration failed\n");
+ goto out;
+ }
+
+ /* Configure the lo mode according to the input parameter */
+ kni_net_config_lo_mode(lo_mode);
+
+ return 0;
+
+out:
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ unregister_pernet_subsys(&kni_net_ops);
+#else
+ unregister_pernet_gen_subsys(kni_net_id, &kni_net_ops);
+#endif
+ return rc;
+}
+
+static void __exit
+kni_exit(void)
+{
+ misc_deregister(&kni_misc);
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ unregister_pernet_subsys(&kni_net_ops);
+#else
+ unregister_pernet_gen_subsys(kni_net_id, &kni_net_ops);
+#endif
+}
+
module_init(kni_init);
module_exit(kni_exit);
Code Review / deb_dpdk.git / blobdiff