* Intel Corporation
*/
+#include <linux/version.h>
#include <linux/module.h>
#include <linux/miscdevice.h>
#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/rwsem.h>
+#include <linux/nsproxy.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
#include <exec-env/rte_kni_common.h>
+
+#include "compat.h"
#include "kni_dev.h"
-#include <rte_config.h>
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Intel Corporation");
#define KNI_DEV_IN_USE_BIT_NUM 0 /* Bit number for device in use */
-static volatile unsigned long device_in_use; /* device in use flag */
-static struct task_struct *kni_kthread;
+static int kni_net_id;
+
+struct kni_net {
+ unsigned long device_in_use; /* device in use flag */
+ 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)
+{
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ struct kni_net *knet = net_generic(net, kni_net_id);
+#else
+ struct kni_net *knet;
+ int ret;
+
+ knet = kmalloc(sizeof(struct kni_net), GFP_KERNEL);
+ if (!knet) {
+ ret = -ENOMEM;
+ return ret;
+ }
+#endif
+
+ /* Clear the bit of device in use */
+ clear_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use);
-/* kni list lock */
-static DECLARE_RWSEM(kni_list_lock);
+ init_rwsem(&knet->kni_list_lock);
+ INIT_LIST_HEAD(&knet->kni_list_head);
+
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ return 0;
+#else
+ ret = net_assign_generic(net, kni_net_id, knet);
+ if (ret < 0)
+ kfree(knet);
+
+ return ret;
+#endif
+}
+
+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);
+
+ kfree(knet);
+#endif
+}
-/* kni list */
-static struct list_head kni_list_head = LIST_HEAD_INIT(kni_list_head);
+static struct pernet_operations kni_net_ops = {
+ .init = kni_init_net,
+ .exit = kni_exit_net,
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ .id = &kni_net_id,
+ .size = sizeof(struct kni_net),
+#endif
+};
static int __init
kni_init(void)
{
+ int rc;
+
KNI_PRINT("######## DPDK kni module loading ########\n");
if (kni_parse_kthread_mode() < 0) {
return -EINVAL;
}
- if (misc_register(&kni_misc) != 0) {
- KNI_ERR("Misc registration failed\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;
- }
- /* Clear the bit of device in use */
- clear_bit(KNI_DEV_IN_USE_BIT_NUM, &device_in_use);
+ 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)
{
misc_deregister(&kni_misc);
+#ifdef HAVE_SIMPLIFIED_PERNET_OPERATIONS
+ unregister_pernet_subsys(&kni_net_ops);
+#else
+ register_pernet_gen_subsys(&kni_net_id, &kni_net_ops);
+#endif
KNI_PRINT("####### DPDK kni module unloaded #######\n");
}
static int
kni_open(struct inode *inode, struct file *file)
{
- /* kni device can be opened by one user only, test and set bit */
- if (test_and_set_bit(KNI_DEV_IN_USE_BIT_NUM, &device_in_use))
+ struct net *net = current->nsproxy->net_ns;
+ struct kni_net *knet = net_generic(net, kni_net_id);
+
+ /* kni device can be opened by one user only per netns */
+ 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 */
- kni_kthread = kthread_run(kni_thread_single, NULL,
+ knet->kni_kthread = kthread_run(kni_thread_single, (void *)knet,
"kni_single");
- if (IS_ERR(kni_kthread)) {
+ if (IS_ERR(knet->kni_kthread)) {
KNI_ERR("Unable to create kernel threaed\n");
- return PTR_ERR(kni_kthread);
+ 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");
return 0;
static int
kni_release(struct inode *inode, struct file *file)
{
+ struct net *net = file->private_data;
+ struct kni_net *knet = net_generic(net, kni_net_id);
struct kni_dev *dev, *n;
/* Stop kernel thread for single mode */
if (multiple_kthread_on == 0) {
/* Stop kernel thread */
- kthread_stop(kni_kthread);
- kni_kthread = NULL;
+ kthread_stop(knet->kni_kthread);
+ knet->kni_kthread = NULL;
}
- down_write(&kni_list_lock);
- list_for_each_entry_safe(dev, n, &kni_list_head, list) {
+ down_write(&knet->kni_list_lock);
+ list_for_each_entry_safe(dev, n, &knet->kni_list_head, list) {
/* Stop kernel thread for multiple mode */
if (multiple_kthread_on && dev->pthread != NULL) {
kthread_stop(dev->pthread);
kni_dev_remove(dev);
list_del(&dev->list);
}
- up_write(&kni_list_lock);
+ up_write(&knet->kni_list_lock);
/* Clear the bit of device in use */
- clear_bit(KNI_DEV_IN_USE_BIT_NUM, &device_in_use);
+ clear_bit(KNI_DEV_IN_USE_BIT_NUM, &knet->device_in_use);
+ put_net(net);
KNI_PRINT("/dev/kni closed\n");
return 0;
}
static int
-kni_thread_single(void *unused)
+kni_thread_single(void *data)
{
+ struct kni_net *knet = data;
int j;
- struct kni_dev *dev, *n;
+ struct kni_dev *dev;
while (!kthread_should_stop()) {
- down_read(&kni_list_lock);
+ down_read(&knet->kni_list_lock);
for (j = 0; j < KNI_RX_LOOP_NUM; j++) {
- list_for_each_entry_safe(dev, n,
- &kni_list_head, list) {
+ list_for_each_entry(dev, &knet->kni_list_head, list) {
#ifdef RTE_KNI_VHOST
kni_chk_vhost_rx(dev);
#else
kni_net_poll_resp(dev);
}
}
- up_read(&kni_list_lock);
+ 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
}
return 0;
#endif
kni_net_poll_resp(dev);
}
+#ifdef RTE_KNI_PREEMPT_DEFAULT
schedule_timeout_interruptible(usecs_to_jiffies( \
KNI_KTHREAD_RESCHEDULE_INTERVAL));
+#endif
}
return 0;
}
static int
-kni_ioctl_create(unsigned int ioctl_num, unsigned long ioctl_param)
+kni_ioctl_create(struct net *net,
+ unsigned int ioctl_num, unsigned long ioctl_param)
{
+ struct kni_net *knet = net_generic(net, kni_net_id);
int ret;
struct rte_kni_device_info dev_info;
struct pci_dev *pci = NULL;
struct net_device *net_dev = NULL;
struct net_device *lad_dev = NULL;
struct kni_dev *kni, *dev, *n;
- struct net *net;
printk(KERN_INFO "KNI: Creating kni...\n");
/* Check the buffer size, to avoid warning */
}
/* Check if it has been created */
- down_read(&kni_list_lock);
- list_for_each_entry_safe(dev, n, &kni_list_head, list) {
+ down_read(&knet->kni_list_lock);
+ list_for_each_entry_safe(dev, n, &knet->kni_list_head, list) {
if (kni_check_param(dev, &dev_info) < 0) {
- up_read(&kni_list_lock);
+ up_read(&knet->kni_list_lock);
return -EINVAL;
}
}
- up_read(&kni_list_lock);
+ up_read(&knet->kni_list_lock);
net_dev = alloc_netdev(sizeof(struct kni_dev), dev_info.name,
#ifdef NET_NAME_UNKNOWN
return -EBUSY;
}
- net = get_net_ns_by_pid(current->pid);
- if (IS_ERR(net)) {
- free_netdev(net_dev);
- return PTR_ERR(net);
- }
dev_net_set(net_dev, net);
- put_net(net);
kni = netdev_priv(net_dev);
if (pci)
pci_dev_put(pci);
+ if (kni->lad_dev)
+ memcpy(net_dev->dev_addr, kni->lad_dev->dev_addr, ETH_ALEN);
+ else
+ /*
+ * Generate random mac address. eth_random_addr() is the newer
+ * version of generating mac address in linux kernel.
+ */
+ random_ether_addr(net_dev->dev_addr);
+
ret = register_netdev(net_dev);
if (ret) {
KNI_ERR("error %i registering device \"%s\"\n",
wake_up_process(kni->pthread);
}
- down_write(&kni_list_lock);
- list_add(&kni->list, &kni_list_head);
- up_write(&kni_list_lock);
+ down_write(&knet->kni_list_lock);
+ list_add(&kni->list, &knet->kni_list_head);
+ up_write(&knet->kni_list_lock);
return 0;
}
static int
-kni_ioctl_release(unsigned int ioctl_num, unsigned long ioctl_param)
+kni_ioctl_release(struct net *net,
+ unsigned int ioctl_num, unsigned long ioctl_param)
{
+ struct kni_net *knet = net_generic(net, kni_net_id);
int ret = -EINVAL;
struct kni_dev *dev, *n;
struct rte_kni_device_info dev_info;
if (strlen(dev_info.name) == 0)
return ret;
- down_write(&kni_list_lock);
- list_for_each_entry_safe(dev, n, &kni_list_head, list) {
+ down_write(&knet->kni_list_lock);
+ list_for_each_entry_safe(dev, n, &knet->kni_list_head, list) {
if (strncmp(dev->name, dev_info.name, RTE_KNI_NAMESIZE) != 0)
continue;
ret = 0;
break;
}
- up_write(&kni_list_lock);
+ up_write(&knet->kni_list_lock);
printk(KERN_INFO "KNI: %s release kni named %s\n",
(ret == 0 ? "Successfully" : "Unsuccessfully"), dev_info.name);
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);
+ KNI_DBG("IOCTL num=0x%0x param=0x%0lx\n", ioctl_num, ioctl_param);
/*
* Switch according to the ioctl called
/* For test only, not used */
break;
case _IOC_NR(RTE_KNI_IOCTL_CREATE):
- ret = kni_ioctl_create(ioctl_num, ioctl_param);
+ ret = kni_ioctl_create(net, ioctl_num, ioctl_param);
break;
case _IOC_NR(RTE_KNI_IOCTL_RELEASE):
- ret = kni_ioctl_release(ioctl_num, ioctl_param);
+ ret = kni_ioctl_release(net, ioctl_num, ioctl_param);
break;
default:
- KNI_DBG("IOCTL default \n");
+ KNI_DBG("IOCTL default\n");
break;
}
" multiple Multiple kernel thread mode enabled.\n"
"\n"
);
-
git.droids-corp.org / dpdk.git / blobdiff