[dpdk-dev] [RFC 4/4] testpmd: enable async device reset
Qi Zhang
qi.z.zhang at intel.com
Wed Aug 8 09:00:45 CEST 2018
rte_eth_dev_reset is claimed as an async API, so re-work
on the device reset handling.
Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
app/test-pmd/testpmd.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 54 insertions(+), 1 deletion(-)
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index ee48db2a3..24d5c5d9c 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1918,6 +1918,59 @@ close_port(portid_t pid)
printf("Done\n");
}
+static pthread_mutex_t dev_reset_lock;
+static pthread_cond_t dev_reset_cond;
+static int reset_status;
+
+static int
+on_reset_complete(__rte_unused uint16_t port_id,
+ __rte_unused enum rte_eth_event_type event,
+ __rte_unused void *cb_arg,
+ void *ret_param)
+{
+ RTE_ASSERT(event == RTE_ETH_EVENT_RESET_COMPLETE);
+
+ pthread_cond_broadcast(&dev_reset_cond);
+
+ reset_status = *(int *)ret_param;
+ return 0;
+}
+
+static int
+do_dev_reset_sync(portid_t pid)
+{
+ int ret;
+
+ pthread_mutex_init(&dev_reset_lock, NULL);
+ pthread_cond_init(&dev_reset_cond, NULL);
+
+ ret = rte_eth_dev_callback_register(pid,
+ RTE_ETH_EVENT_RESET_COMPLETE,
+ on_reset_complete, NULL);
+
+ if (ret) {
+ printf("Fail to reigster callback function\n");
+ return ret;
+ }
+
+ ret = rte_eth_dev_reset(pid);
+ if (ret)
+ goto finish;
+
+ pthread_mutex_lock(&dev_reset_lock);
+ pthread_cond_wait(&dev_reset_cond, &dev_reset_lock);
+ pthread_mutex_unlock(&dev_reset_lock);
+
+ ret = reset_status;
+
+finish:
+ rte_eth_dev_callback_unregister(pid,
+ RTE_ETH_EVENT_RESET_COMPLETE,
+ on_reset_complete, NULL);
+
+ return ret;
+}
+
void
reset_port(portid_t pid)
{
@@ -1946,7 +1999,7 @@ reset_port(portid_t pid)
continue;
}
- diag = rte_eth_dev_reset(pi);
+ diag = do_dev_reset_sync(pi);
if (diag == 0) {
port = &ports[pi];
port->need_reconfig = 1;
--
2.13.6
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