When the device is bonded, bond pmd will register callback for LSC event.
This callback will execute some virtchnl commands in eal-intr-thread to
reinitialize the device with interrupts disabled. In this case, responses
to all commands not be received.
This commit starts a thread to handle all events to fix this issue.
Fixes: 48de41ca11f0 ("net/avf: enable link status update")
CC: sta...@dpdk.org
Signed-off-by: Yiding Zhou <yidingx.z...@intel.com>
---
drivers/net/iavf/iavf.h | 2 +
drivers/net/iavf/iavf_ethdev.c | 5 ++
drivers/net/iavf/iavf_vchnl.c | 130 ++++++++++++++++++++++++++++++++-
3 files changed, 136 insertions(+), 1 deletion(-)
diff --git a/drivers/net/iavf/iavf.h b/drivers/net/iavf/iavf.h
index 025ab3ff60..7c215e1797 100644
--- a/drivers/net/iavf/iavf.h
+++ b/drivers/net/iavf/iavf.h
@@ -417,6 +417,8 @@ _atomic_set_async_response_cmd(struct iavf_info *vf, enum
virtchnl_ops ops)
}
int iavf_check_api_version(struct iavf_adapter *adapter);
int iavf_get_vf_resource(struct iavf_adapter *adapter);
+void iavf_dev_event_handler_fini(void);
+int iavf_dev_event_handler_init(void);
void iavf_handle_virtchnl_msg(struct rte_eth_dev *dev);
int iavf_enable_vlan_strip(struct iavf_adapter *adapter);
int iavf_disable_vlan_strip(struct iavf_adapter *adapter);
diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 506fcff6e3..a584b8918d 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -2629,6 +2629,9 @@ iavf_dev_init(struct rte_eth_dev *eth_dev)
rte_ether_addr_copy((struct rte_ether_addr *)hw->mac.addr,
ð_dev->data->mac_addrs[0]);
+ if (iavf_dev_event_handler_init())
+ goto init_vf_err;
+
if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) {
/* register callback func to eal lib */
rte_intr_callback_register(pci_dev->intr_handle,
@@ -2783,6 +2786,8 @@ iavf_dev_uninit(struct rte_eth_dev *dev)
iavf_dev_close(dev);
+ iavf_dev_event_handler_fini();
+
return 0;
}
diff --git a/drivers/net/iavf/iavf_vchnl.c b/drivers/net/iavf/iavf_vchnl.c
index 21bd1e2193..5f3dd8779e 100644
--- a/drivers/net/iavf/iavf_vchnl.c
+++ b/drivers/net/iavf/iavf_vchnl.c
@@ -2,6 +2,8 @@
* Copyright(c) 2017 Intel Corporation
*/
+#include <unistd.h>
+#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
@@ -27,6 +29,132 @@
#define MAX_TRY_TIMES 2000
#define ASQ_DELAY_MS 1
+struct iavf_arq_event_element {
+ TAILQ_ENTRY(iavf_arq_event_element) next;
+ struct rte_eth_dev *dev;
+ enum rte_eth_event_type event;
+ void *param;
+};
+
+struct iavf_event_handler {
+ rte_atomic32_t ndev;
+ pthread_t tid;
+ int fd[2];
+ pthread_mutex_t lock;
+ TAILQ_HEAD(event_lsit, iavf_arq_event_element) pending;
+};
+
+static struct iavf_event_handler event_handler = {
+ .fd = {-1, -1},
+};
+
+#ifndef TAILQ_FOREACH_SAFE
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
+ for ((var) = TAILQ_FIRST((head)); \
+ (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
+ (var) = (tvar))
+#endif
+
+static void *
+iavf_dev_event_handle(void *param __rte_unused)
+{
+ struct iavf_event_handler *handler = &event_handler;
+ TAILQ_HEAD(event_list, iavf_arq_event_element) pending;
+
+ while (true) {
+ char unused;
+ int nr = read(handler->fd[0], &unused, 1);
+ if (nr <= 0)
+ break;
+
+ TAILQ_INIT(&pending);
+ pthread_mutex_lock(&handler->lock);
+ TAILQ_CONCAT(&pending, &handler->pending, next);
+ pthread_mutex_unlock(&handler->lock);
+
+ struct iavf_arq_event_element *pos, *save_next;
+ TAILQ_FOREACH_SAFE(pos, &pending, next, save_next) {
+ TAILQ_REMOVE(&pending, pos, next);
+ rte_eth_dev_callback_process(pos->dev, pos->event,
pos->param);
+ rte_free(pos);
+ }
+ }
+ return NULL;
+}
+
+static void
+iavf_dev_event_post(struct rte_eth_dev *dev,
+ enum rte_eth_event_type event,
+ void *param)
+{
+ struct iavf_event_handler *handler = &event_handler;
+ char notify_byte;
+ struct iavf_arq_event_element *elem = rte_malloc(NULL, sizeof(*elem),
0);
+ if (!elem)
+ return;
+
+ elem->dev = dev;
+ elem->event = event;
+ elem->param = param;
+
+ pthread_mutex_lock(&handler->lock);
+ TAILQ_INSERT_TAIL(&handler->pending, elem, next);
+ pthread_mutex_unlock(&handler->lock);
+
+ write(handler->fd[1], ¬ify_byte, 1);
+}
+
+int
+iavf_dev_event_handler_init(void)
+{
+ struct iavf_event_handler *handler = &event_handler;
+
+ if (rte_atomic32_add_return(&handler->ndev, 1) != 1)
+ return 0;
+
+ if (pipe(handler->fd)) {
+ rte_atomic32_dec(&handler->ndev);
+ return -1;
+ }
+
+ TAILQ_INIT(&handler->pending);
+ pthread_mutex_init(&handler->lock, NULL);
+
+ int flags = fcntl(handler->fd[1], F_GETFL);
+ fcntl(handler->fd[1], F_SETFL, flags | O_NONBLOCK);
+ if (rte_ctrl_thread_create(&handler->tid, "iavf-event-thread",
+ NULL, iavf_dev_event_handle, NULL)) {
+ rte_atomic32_dec(&handler->ndev);
+ return -1;
+ }
+
+ return 0;
+}
+
+void
+iavf_dev_event_handler_fini(void)
+{
+ struct iavf_event_handler *handler = &event_handler;
+
+ if (!rte_atomic32_dec_and_test(&handler->ndev))
+ return;
+
+ pthread_cancel(handler->tid);
+ close(handler->fd[0]);
+ close(handler->fd[1]);
+ handler->fd[0] = -1;
+ handler->fd[1] = -1;
+
+ pthread_join(handler->tid, NULL);
+ pthread_mutex_destroy(&handler->lock);
+
+ struct iavf_arq_event_element *pos, *save_next;
+ TAILQ_FOREACH_SAFE(pos, &handler->pending, next, save_next) {
+ TAILQ_REMOVE(&handler->pending, pos, next);
+ rte_free(pos);
+ }
+}
+
static uint32_t
iavf_convert_link_speed(enum virtchnl_link_speed virt_link_speed)
{
@@ -293,7 +421,7 @@ iavf_handle_pf_event_msg(struct rte_eth_dev *dev, uint8_t
*msg,
vf->link_speed = iavf_convert_link_speed(speed);
}
iavf_dev_link_update(dev, 0);
- rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
+ iavf_dev_event_post(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
break;
case VIRTCHNL_EVENT_PF_DRIVER_CLOSE:
PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_PF_DRIVER_CLOSE event");
--
2.34.1
