forked from luck/tmp_suning_uos_patched
[PKTGEN]: fix device name handling
Since devices can change name and other wierdness, don't hold onto a copy of device name, instead use pointer to output device. Fix a couple of leaks in error handling path as well. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: Robert Olsson <robert.olsson@its.uu.se> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
d5f1ce9a5e
commit
39df232f1a
|
@ -211,15 +211,11 @@ struct flow_state {
|
|||
};
|
||||
|
||||
struct pktgen_dev {
|
||||
|
||||
/*
|
||||
* Try to keep frequent/infrequent used vars. separated.
|
||||
*/
|
||||
|
||||
char ifname[IFNAMSIZ];
|
||||
char result[512];
|
||||
|
||||
struct pktgen_thread *pg_thread; /* the owner */
|
||||
struct proc_dir_entry *entry; /* proc file */
|
||||
struct pktgen_thread *pg_thread;/* the owner */
|
||||
struct list_head list; /* Used for chaining in the thread's run-queue */
|
||||
|
||||
int running; /* if this changes to false, the test will stop */
|
||||
|
@ -346,6 +342,8 @@ struct pktgen_dev {
|
|||
unsigned cflows; /* Concurrent flows (config) */
|
||||
unsigned lflow; /* Flow length (config) */
|
||||
unsigned nflows; /* accumulated flows (stats) */
|
||||
|
||||
char result[512];
|
||||
};
|
||||
|
||||
struct pktgen_hdr {
|
||||
|
@ -498,7 +496,7 @@ static void pktgen_stop_all_threads_ifs(void);
|
|||
static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
|
||||
static void pktgen_stop(struct pktgen_thread *t);
|
||||
static void pktgen_clear_counters(struct pktgen_dev *pkt_dev);
|
||||
static int pktgen_mark_device(const char *ifname);
|
||||
|
||||
static unsigned int scan_ip6(const char *s, char ip[16]);
|
||||
static unsigned int fmt_ip6(char *s, const char ip[16]);
|
||||
|
||||
|
@ -592,7 +590,7 @@ static int pktgen_if_show(struct seq_file *seq, void *v)
|
|||
" frags: %d delay: %u clone_skb: %d ifname: %s\n",
|
||||
pkt_dev->nfrags,
|
||||
1000 * pkt_dev->delay_us + pkt_dev->delay_ns,
|
||||
pkt_dev->clone_skb, pkt_dev->ifname);
|
||||
pkt_dev->clone_skb, pkt_dev->odev->name);
|
||||
|
||||
seq_printf(seq, " flows: %u flowlen: %u\n", pkt_dev->cflows,
|
||||
pkt_dev->lflow);
|
||||
|
@ -1683,13 +1681,13 @@ static int pktgen_thread_show(struct seq_file *seq, void *v)
|
|||
if_lock(t);
|
||||
list_for_each_entry(pkt_dev, &t->if_list, list)
|
||||
if (pkt_dev->running)
|
||||
seq_printf(seq, "%s ", pkt_dev->ifname);
|
||||
seq_printf(seq, "%s ", pkt_dev->odev->name);
|
||||
|
||||
seq_printf(seq, "\nStopped: ");
|
||||
|
||||
list_for_each_entry(pkt_dev, &t->if_list, list)
|
||||
if (!pkt_dev->running)
|
||||
seq_printf(seq, "%s ", pkt_dev->ifname);
|
||||
seq_printf(seq, "%s ", pkt_dev->odev->name);
|
||||
|
||||
if (t->result[0])
|
||||
seq_printf(seq, "\nResult: %s\n", t->result);
|
||||
|
@ -1835,12 +1833,11 @@ static struct pktgen_dev *__pktgen_NN_threads(const char *ifname, int remove)
|
|||
/*
|
||||
* mark a device for removal
|
||||
*/
|
||||
static int pktgen_mark_device(const char *ifname)
|
||||
static void pktgen_mark_device(const char *ifname)
|
||||
{
|
||||
struct pktgen_dev *pkt_dev = NULL;
|
||||
const int max_tries = 10, msec_per_try = 125;
|
||||
int i = 0;
|
||||
int ret = 0;
|
||||
|
||||
mutex_lock(&pktgen_thread_lock);
|
||||
pr_debug("pktgen: pktgen_mark_device marking %s for removal\n", ifname);
|
||||
|
@ -1861,32 +1858,49 @@ static int pktgen_mark_device(const char *ifname)
|
|||
printk("pktgen_mark_device: timed out after waiting "
|
||||
"%d msec for device %s to be removed\n",
|
||||
msec_per_try * i, ifname);
|
||||
ret = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
mutex_unlock(&pktgen_thread_lock);
|
||||
}
|
||||
|
||||
return ret;
|
||||
static void pktgen_change_name(struct net_device *dev)
|
||||
{
|
||||
struct pktgen_thread *t;
|
||||
|
||||
list_for_each_entry(t, &pktgen_threads, th_list) {
|
||||
struct pktgen_dev *pkt_dev;
|
||||
|
||||
list_for_each_entry(pkt_dev, &t->if_list, list) {
|
||||
if (pkt_dev->odev != dev)
|
||||
continue;
|
||||
|
||||
remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
|
||||
|
||||
pkt_dev->entry = create_proc_entry(dev->name, 0600,
|
||||
pg_proc_dir);
|
||||
if (!pkt_dev->entry)
|
||||
printk(KERN_ERR "pktgen: can't move proc "
|
||||
" entry for '%s'\n", dev->name);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int pktgen_device_event(struct notifier_block *unused,
|
||||
unsigned long event, void *ptr)
|
||||
{
|
||||
struct net_device *dev = (struct net_device *)(ptr);
|
||||
struct net_device *dev = ptr;
|
||||
|
||||
/* It is OK that we do not hold the group lock right now,
|
||||
* as we run under the RTNL lock.
|
||||
*/
|
||||
|
||||
switch (event) {
|
||||
case NETDEV_CHANGEADDR:
|
||||
case NETDEV_GOING_DOWN:
|
||||
case NETDEV_DOWN:
|
||||
case NETDEV_UP:
|
||||
/* Ignore for now */
|
||||
case NETDEV_CHANGENAME:
|
||||
pktgen_change_name(dev);
|
||||
break;
|
||||
|
||||
case NETDEV_UNREGISTER:
|
||||
|
@ -1899,41 +1913,36 @@ static int pktgen_device_event(struct notifier_block *unused,
|
|||
|
||||
/* Associate pktgen_dev with a device. */
|
||||
|
||||
static struct net_device *pktgen_setup_dev(struct pktgen_dev *pkt_dev)
|
||||
static int pktgen_setup_dev(struct pktgen_dev *pkt_dev, const char *ifname)
|
||||
{
|
||||
struct net_device *odev;
|
||||
int err;
|
||||
|
||||
/* Clean old setups */
|
||||
|
||||
if (pkt_dev->odev) {
|
||||
dev_put(pkt_dev->odev);
|
||||
pkt_dev->odev = NULL;
|
||||
}
|
||||
|
||||
odev = dev_get_by_name(pkt_dev->ifname);
|
||||
|
||||
odev = dev_get_by_name(ifname);
|
||||
if (!odev) {
|
||||
printk("pktgen: no such netdevice: \"%s\"\n", pkt_dev->ifname);
|
||||
goto out;
|
||||
printk("pktgen: no such netdevice: \"%s\"\n", ifname);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (odev->type != ARPHRD_ETHER) {
|
||||
printk("pktgen: not an ethernet device: \"%s\"\n",
|
||||
pkt_dev->ifname);
|
||||
goto out_put;
|
||||
printk("pktgen: not an ethernet device: \"%s\"\n", ifname);
|
||||
err = -EINVAL;
|
||||
} else if (!netif_running(odev)) {
|
||||
printk("pktgen: device is down: \"%s\"\n", ifname);
|
||||
err = -ENETDOWN;
|
||||
} else {
|
||||
pkt_dev->odev = odev;
|
||||
return 0;
|
||||
}
|
||||
if (!netif_running(odev)) {
|
||||
printk("pktgen: device is down: \"%s\"\n", pkt_dev->ifname);
|
||||
goto out_put;
|
||||
}
|
||||
pkt_dev->odev = odev;
|
||||
|
||||
return pkt_dev->odev;
|
||||
|
||||
out_put:
|
||||
dev_put(odev);
|
||||
out:
|
||||
return NULL;
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Read pkt_dev from the interface and set up internal pktgen_dev
|
||||
|
@ -1941,10 +1950,6 @@ static struct net_device *pktgen_setup_dev(struct pktgen_dev *pkt_dev)
|
|||
*/
|
||||
static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
|
||||
{
|
||||
/* Try once more, just in case it works now. */
|
||||
if (!pkt_dev->odev)
|
||||
pktgen_setup_dev(pkt_dev);
|
||||
|
||||
if (!pkt_dev->odev) {
|
||||
printk("pktgen: ERROR: pkt_dev->odev == NULL in setup_inject.\n");
|
||||
sprintf(pkt_dev->result,
|
||||
|
@ -2988,7 +2993,7 @@ static int pktgen_stop_device(struct pktgen_dev *pkt_dev)
|
|||
|
||||
if (!pkt_dev->running) {
|
||||
printk("pktgen: interface: %s is already stopped\n",
|
||||
pkt_dev->ifname);
|
||||
pkt_dev->odev->name);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
|
@ -3340,7 +3345,7 @@ static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
|
|||
if_lock(t);
|
||||
|
||||
list_for_each_entry(p, &t->if_list, list)
|
||||
if (strncmp(p->ifname, ifname, IFNAMSIZ) == 0) {
|
||||
if (strncmp(p->odev->name, ifname, IFNAMSIZ) == 0) {
|
||||
pkt_dev = p;
|
||||
break;
|
||||
}
|
||||
|
@ -3381,7 +3386,7 @@ static int add_dev_to_thread(struct pktgen_thread *t,
|
|||
static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
|
||||
{
|
||||
struct pktgen_dev *pkt_dev;
|
||||
struct proc_dir_entry *pe;
|
||||
int err;
|
||||
|
||||
/* We don't allow a device to be on several threads */
|
||||
|
||||
|
@ -3423,29 +3428,28 @@ static int pktgen_add_device(struct pktgen_thread *t, const char *ifname)
|
|||
pkt_dev->svlan_cfi = 0;
|
||||
pkt_dev->svlan_id = 0xffff;
|
||||
|
||||
strncpy(pkt_dev->ifname, ifname, IFNAMSIZ);
|
||||
err = pktgen_setup_dev(pkt_dev, ifname);
|
||||
if (err)
|
||||
goto out1;
|
||||
|
||||
if (!pktgen_setup_dev(pkt_dev)) {
|
||||
printk("pktgen: ERROR: pktgen_setup_dev failed.\n");
|
||||
if (pkt_dev->flows)
|
||||
vfree(pkt_dev->flows);
|
||||
kfree(pkt_dev);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
pe = create_proc_entry(ifname, 0600, pg_proc_dir);
|
||||
if (!pe) {
|
||||
pkt_dev->entry = create_proc_entry(ifname, 0600, pg_proc_dir);
|
||||
if (!pkt_dev->entry) {
|
||||
printk("pktgen: cannot create %s/%s procfs entry.\n",
|
||||
PG_PROC_DIR, ifname);
|
||||
if (pkt_dev->flows)
|
||||
vfree(pkt_dev->flows);
|
||||
kfree(pkt_dev);
|
||||
return -EINVAL;
|
||||
err = -EINVAL;
|
||||
goto out2;
|
||||
}
|
||||
pe->proc_fops = &pktgen_if_fops;
|
||||
pe->data = pkt_dev;
|
||||
pkt_dev->entry->proc_fops = &pktgen_if_fops;
|
||||
pkt_dev->entry->data = pkt_dev;
|
||||
|
||||
return add_dev_to_thread(t, pkt_dev);
|
||||
out2:
|
||||
dev_put(pkt_dev->odev);
|
||||
out1:
|
||||
if (pkt_dev->flows)
|
||||
vfree(pkt_dev->flows);
|
||||
kfree(pkt_dev);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __init pktgen_create_thread(int cpu)
|
||||
|
@ -3533,9 +3537,8 @@ static int pktgen_remove_device(struct pktgen_thread *t,
|
|||
|
||||
_rem_dev_from_if_list(t, pkt_dev);
|
||||
|
||||
/* Clean up proc file system */
|
||||
|
||||
remove_proc_entry(pkt_dev->ifname, pg_proc_dir);
|
||||
if (pkt_dev->entry)
|
||||
remove_proc_entry(pkt_dev->entry->name, pg_proc_dir);
|
||||
|
||||
if (pkt_dev->flows)
|
||||
vfree(pkt_dev->flows);
|
||||
|
|
Loading…
Reference in New Issue
Block a user