[dpdk-dev] [PATCH v2 38/51] net/mlx4: clean up interrupt functions prototypes
Adrien Mazarguil
adrien.mazarguil at 6wind.com
Fri Sep 1 10:06:53 CEST 2017
The naming scheme for these functions is overly verbose and not accurate
enough, with too many "handler" functions that are difficult to
differentiate (e.g. mlx4_dev_link_status_handler(),
mlx4_dev_interrupt_handler() and priv_dev_status_handler()).
This commit renames them and removes the unnecessary dev argument which can
be retrieved through the private structure where needed. Documentation is
updated accordingly.
Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
drivers/net/mlx4/mlx4.c | 145 ++++++++++++++++---------------------------
1 file changed, 55 insertions(+), 90 deletions(-)
diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 2db2b0e..0fcd4f0 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -1977,14 +1977,9 @@ mlx4_rx_queue_release(void *dpdk_rxq)
rte_free(rxq);
}
-static int
-priv_dev_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_removal_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_link_interrupt_handler_install(struct priv *, struct rte_eth_dev *);
+static int priv_interrupt_handler_install(struct priv *priv);
+static int priv_removal_interrupt_handler_install(struct priv *priv);
+static int priv_link_interrupt_handler_install(struct priv *priv);
/**
* DPDK callback to start the device.
@@ -2010,13 +2005,13 @@ mlx4_dev_start(struct rte_eth_dev *dev)
ret = priv_mac_addr_add(priv);
if (ret)
goto err;
- ret = priv_dev_link_interrupt_handler_install(priv, dev);
+ ret = priv_link_interrupt_handler_install(priv);
if (ret) {
ERROR("%p: LSC handler install failed",
(void *)dev);
goto err;
}
- ret = priv_dev_removal_interrupt_handler_install(priv, dev);
+ ret = priv_removal_interrupt_handler_install(priv);
if (ret) {
ERROR("%p: RMV handler install failed",
(void *)dev);
@@ -2113,15 +2108,9 @@ removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
return 0;
}
-static int
-priv_dev_interrupt_handler_uninstall(struct priv *, struct rte_eth_dev *);
-
-static int
-priv_dev_removal_interrupt_handler_uninstall(struct priv *,
- struct rte_eth_dev *);
-
-static int
-priv_dev_link_interrupt_handler_uninstall(struct priv *, struct rte_eth_dev *);
+static int priv_interrupt_handler_uninstall(struct priv *priv);
+static int priv_removal_interrupt_handler_uninstall(struct priv *priv);
+static int priv_link_interrupt_handler_uninstall(struct priv *priv);
/**
* DPDK callback to close the device.
@@ -2185,8 +2174,8 @@ mlx4_dev_close(struct rte_eth_dev *dev)
claim_zero(ibv_close_device(priv->ctx));
} else
assert(priv->ctx == NULL);
- priv_dev_removal_interrupt_handler_uninstall(priv, dev);
- priv_dev_link_interrupt_handler_uninstall(priv, dev);
+ priv_removal_interrupt_handler_uninstall(priv);
+ priv_link_interrupt_handler_uninstall(priv);
priv_rx_intr_vec_disable(priv);
memset(priv, 0, sizeof(*priv));
}
@@ -2674,31 +2663,25 @@ priv_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
return 0;
}
-static void
-mlx4_dev_link_status_handler(void *);
-static void
-mlx4_dev_interrupt_handler(void *);
+static void mlx4_link_status_alarm(struct priv *priv);
/**
- * Link/device status handler.
+ * Collect interrupt events.
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
* @param events
* Pointer to event flags holder.
*
* @return
- * Number of events
+ * Number of events.
*/
static int
-priv_dev_status_handler(struct priv *priv, struct rte_eth_dev *dev,
- uint32_t *events)
+priv_collect_interrupt_events(struct priv *priv, uint32_t *events)
{
struct ibv_async_event event;
int port_change = 0;
- struct rte_eth_link *link = &dev->data->dev_link;
+ struct rte_eth_link *link = &priv->dev->data->dev_link;
int ret = 0;
*events = 0;
@@ -2722,15 +2705,16 @@ priv_dev_status_handler(struct priv *priv, struct rte_eth_dev *dev,
}
if (!port_change)
return ret;
- mlx4_link_update(dev, 0);
+ mlx4_link_update(priv->dev, 0);
if (((link->link_speed == 0) && link->link_status) ||
((link->link_speed != 0) && !link->link_status)) {
if (!priv->intr_alarm) {
/* Inconsistent status, check again later. */
priv->intr_alarm = 1;
rte_eal_alarm_set(MLX4_INTR_ALARM_TIMEOUT,
- mlx4_dev_link_status_handler,
- dev);
+ (void (*)(void *))
+ mlx4_link_status_alarm,
+ priv);
}
} else {
*events |= (1 << RTE_ETH_EVENT_INTR_LSC);
@@ -2739,53 +2723,48 @@ priv_dev_status_handler(struct priv *priv, struct rte_eth_dev *dev,
}
/**
- * Handle delayed link status event.
+ * Process scheduled link status check.
*
- * @param arg
- * Registered argument.
+ * @param priv
+ * Pointer to private structure.
*/
static void
-mlx4_dev_link_status_handler(void *arg)
+mlx4_link_status_alarm(struct priv *priv)
{
- struct rte_eth_dev *dev = arg;
- struct priv *priv = dev->data->dev_private;
uint32_t events;
int ret;
assert(priv->intr_alarm == 1);
priv->intr_alarm = 0;
- ret = priv_dev_status_handler(priv, dev, &events);
+ ret = priv_collect_interrupt_events(priv, &events);
if (ret > 0 && events & (1 << RTE_ETH_EVENT_INTR_LSC))
- _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC,
+ _rte_eth_dev_callback_process(priv->dev,
+ RTE_ETH_EVENT_INTR_LSC,
NULL, NULL);
}
/**
* Handle interrupts from the NIC.
*
- * @param[in] intr_handle
- * Interrupt handler.
- * @param cb_arg
- * Callback argument.
+ * @param priv
+ * Pointer to private structure.
*/
static void
-mlx4_dev_interrupt_handler(void *cb_arg)
+mlx4_interrupt_handler(struct priv *priv)
{
- struct rte_eth_dev *dev = cb_arg;
- struct priv *priv = dev->data->dev_private;
int ret;
uint32_t ev;
int i;
- ret = priv_dev_status_handler(priv, dev, &ev);
+ ret = priv_collect_interrupt_events(priv, &ev);
if (ret > 0) {
for (i = RTE_ETH_EVENT_UNKNOWN;
i < RTE_ETH_EVENT_MAX;
i++) {
if (ev & (1 << i)) {
ev &= ~(1 << i);
- _rte_eth_dev_callback_process(dev, i, NULL,
- NULL);
+ _rte_eth_dev_callback_process(priv->dev, i,
+ NULL, NULL);
ret--;
}
}
@@ -2800,14 +2779,12 @@ mlx4_dev_interrupt_handler(void *cb_arg)
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
+priv_interrupt_handler_uninstall(struct priv *priv)
{
int ret;
@@ -2815,8 +2792,9 @@ priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
priv->intr_conf.rmv)
return 0;
ret = rte_intr_callback_unregister(&priv->intr_handle,
- mlx4_dev_interrupt_handler,
- dev);
+ (void (*)(void *))
+ mlx4_interrupt_handler,
+ priv);
if (ret < 0) {
rte_errno = ret;
ERROR("rte_intr_callback_unregister failed with %d %s",
@@ -2831,15 +2809,12 @@ priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
+priv_interrupt_handler_install(struct priv *priv)
{
int rc;
@@ -2853,8 +2828,9 @@ priv_dev_interrupt_handler_install(struct priv *priv,
return 0;
priv->intr_handle.fd = priv->ctx->async_fd;
rc = rte_intr_callback_register(&priv->intr_handle,
- mlx4_dev_interrupt_handler,
- dev);
+ (void (*)(void *))
+ mlx4_interrupt_handler,
+ priv);
if (!rc)
return 0;
rte_errno = -rc;
@@ -2869,19 +2845,16 @@ priv_dev_interrupt_handler_install(struct priv *priv,
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_removal_interrupt_handler_uninstall(struct priv *priv,
- struct rte_eth_dev *dev)
+priv_removal_interrupt_handler_uninstall(struct priv *priv)
{
- if (dev->data->dev_conf.intr_conf.rmv) {
+ if (priv->dev->data->dev_conf.intr_conf.rmv) {
priv->intr_conf.rmv = 0;
- return priv_dev_interrupt_handler_uninstall(priv, dev);
+ return priv_interrupt_handler_uninstall(priv);
}
return 0;
}
@@ -2891,27 +2864,25 @@ priv_dev_removal_interrupt_handler_uninstall(struct priv *priv,
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_link_interrupt_handler_uninstall(struct priv *priv,
- struct rte_eth_dev *dev)
+priv_link_interrupt_handler_uninstall(struct priv *priv)
{
int ret = 0;
- if (dev->data->dev_conf.intr_conf.lsc) {
+ if (priv->dev->data->dev_conf.intr_conf.lsc) {
priv->intr_conf.lsc = 0;
- ret = priv_dev_interrupt_handler_uninstall(priv, dev);
+ ret = priv_interrupt_handler_uninstall(priv);
if (ret)
return ret;
}
if (priv->intr_alarm)
- if (rte_eal_alarm_cancel(mlx4_dev_link_status_handler,
- dev)) {
+ if (rte_eal_alarm_cancel((void (*)(void *))
+ mlx4_link_status_alarm,
+ priv)) {
ERROR("rte_eal_alarm_cancel failed "
" (rte_errno: %s)", strerror(rte_errno));
return -rte_errno;
@@ -2925,20 +2896,17 @@ priv_dev_link_interrupt_handler_uninstall(struct priv *priv,
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_link_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
+priv_link_interrupt_handler_install(struct priv *priv)
{
int ret;
- if (dev->data->dev_conf.intr_conf.lsc) {
- ret = priv_dev_interrupt_handler_install(priv, dev);
+ if (priv->dev->data->dev_conf.intr_conf.lsc) {
+ ret = priv_interrupt_handler_install(priv);
if (ret)
return ret;
priv->intr_conf.lsc = 1;
@@ -2951,20 +2919,17 @@ priv_dev_link_interrupt_handler_install(struct priv *priv,
*
* @param priv
* Pointer to private structure.
- * @param dev
- * Pointer to the rte_eth_dev structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
-priv_dev_removal_interrupt_handler_install(struct priv *priv,
- struct rte_eth_dev *dev)
+priv_removal_interrupt_handler_install(struct priv *priv)
{
int ret;
- if (dev->data->dev_conf.intr_conf.rmv) {
- ret = priv_dev_interrupt_handler_install(priv, dev);
+ if (priv->dev->data->dev_conf.intr_conf.rmv) {
+ ret = priv_interrupt_handler_install(priv);
if (ret)
return ret;
priv->intr_conf.rmv = 1;
--
2.1.4
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