Commit eb37b41c authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by David S. Miller

pktgen: add full reset functionality

While testing pktgen, I found that sometimes my configurations from
previous runs would be left over, particularly when going from a test
with 8 threads down to a test with 4 threads.

This adds new functionality to pktgen where you can call
pgset "reset"

and it will be just like you just insmod'ed pktgen again.
Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarRobert Olsson <robert.olsson@its.uu.se>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9b1582d4
...@@ -422,6 +422,7 @@ static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t, ...@@ -422,6 +422,7 @@ static struct pktgen_dev *pktgen_find_dev(struct pktgen_thread *t,
const char *ifname); const char *ifname);
static int pktgen_device_event(struct notifier_block *, unsigned long, void *); static int pktgen_device_event(struct notifier_block *, unsigned long, void *);
static void pktgen_run_all_threads(void); static void pktgen_run_all_threads(void);
static void pktgen_reset_all_threads(void);
static void pktgen_stop_all_threads_ifs(void); static void pktgen_stop_all_threads_ifs(void);
static int pktgen_stop_device(struct pktgen_dev *pkt_dev); static int pktgen_stop_device(struct pktgen_dev *pkt_dev);
static void pktgen_stop(struct pktgen_thread *t); static void pktgen_stop(struct pktgen_thread *t);
...@@ -480,6 +481,9 @@ static ssize_t pgctrl_write(struct file *file, const char __user * buf, ...@@ -480,6 +481,9 @@ static ssize_t pgctrl_write(struct file *file, const char __user * buf,
else if (!strcmp(data, "start")) else if (!strcmp(data, "start"))
pktgen_run_all_threads(); pktgen_run_all_threads();
else if (!strcmp(data, "reset"))
pktgen_reset_all_threads();
else else
printk(KERN_WARNING "pktgen: Unknown command: %s\n", data); printk(KERN_WARNING "pktgen: Unknown command: %s\n", data);
...@@ -3173,6 +3177,24 @@ static void pktgen_run_all_threads(void) ...@@ -3173,6 +3177,24 @@ static void pktgen_run_all_threads(void)
pktgen_wait_all_threads_run(); pktgen_wait_all_threads_run();
} }
static void pktgen_reset_all_threads(void)
{
struct pktgen_thread *t;
pr_debug("pktgen: entering pktgen_reset_all_threads.\n");
mutex_lock(&pktgen_thread_lock);
list_for_each_entry(t, &pktgen_threads, th_list)
t->control |= (T_REMDEVALL);
mutex_unlock(&pktgen_thread_lock);
schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
pktgen_wait_all_threads_run();
}
static void show_results(struct pktgen_dev *pkt_dev, int nr_frags) static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
{ {
__u64 total_us, bps, mbps, pps, idle; __u64 total_us, bps, mbps, pps, idle;
......
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