[dpdk-dev] [PATCH v6 1/8] eal: declare new interrupt api

Cunming Liang cunming.liang at intel.com
Fri Feb 27 05:56:09 CET 2015


Add two API *rte_intr_rx_wait* and *rte_intr_rx_set* for RX interrupt.
They're only available in VFIO_MSIX.

Signed-off-by: Cunming Liang <cunming.liang at intel.com>
---
 lib/librte_eal/common/include/rte_interrupts.h | 38 ++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/lib/librte_eal/common/include/rte_interrupts.h b/lib/librte_eal/common/include/rte_interrupts.h
index 609c34b..6e31f1d 100644
--- a/lib/librte_eal/common/include/rte_interrupts.h
+++ b/lib/librte_eal/common/include/rte_interrupts.h
@@ -45,6 +45,8 @@
 extern "C" {
 #endif
 
+#include <stdint.h>
+
 /** Interrupt handle */
 struct rte_intr_handle;
 
@@ -54,6 +56,8 @@ typedef void (*rte_intr_callback_fn)(struct rte_intr_handle *intr_handle,
 
 #include <exec-env/rte_interrupts.h>
 
+#define RTE_EPOLL_FD_ANY        -1  /**< to hint using per thread epfd */
+
 /**
  * It registers the callback for the specific interrupt. Multiple
  * callbacks cal be registered at the same time.
@@ -113,6 +117,40 @@ int rte_intr_enable(struct rte_intr_handle *intr_handle);
  */
 int rte_intr_disable(struct rte_intr_handle *intr_handle);
 
+/**
+ * @param intr_handle
+ *   pointer to the interrupt handle.
+ * @param fd
+ *   event fd the thread wait for.
+ * @param vec
+ *   array for all the ready vectors.
+ * @param num
+ *   the max number of vector array.
+ * @return
+ *   - On success, returns the number of available vectors.
+ *   - On failure, a negative value.
+ */
+int
+rte_intr_rx_wait(struct rte_intr_handle *intr_handle,
+		 int fd, uint32_t *vec, uint16_t num);
+
+/**
+ * @param intr_handle
+ *   pointer to the interrupt handle.
+ * @param fd
+ *   event fd which the intr vector associated to.
+ * @param op
+ *   operation type of {ADD, DEL}.
+ * @param vec
+ *   vector number added to the event wait list.
+ * @return
+ *   - On success, zero.
+ *   - On failure, a negative value.
+ */
+int
+rte_intr_rx_set(struct rte_intr_handle *intr_handle,
+		int fd, int op, uint32_t vec);
+
 #ifdef __cplusplus
 }
 #endif
-- 
1.8.1.4



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