[dpdk-dev,v14,01/13] eal/linux: add interrupt vectors support in intr_handle
Commit Message
The patch adds interrupt vectors support in rte_intr_handle.
'vec_en' is set when interrupt vectors are detected and associated event fds are set.
Those event fds are stored in efds[].
'intr_vec' is reserved for device driver to initialize the vector mapping table.
Signed-off-by: Danny Zhou <danny.zhou@intel.com>
Signed-off-by: Cunming Liang <cunming.liang@intel.com>
---
v14 changes
- per-patch basis ABI compatibility rework
v7 changes:
- add eptrs[], it's used to store the register rte_epoll_event instances.
- add vec_en, to log the vector capability status.
v6 changes:
- add mapping table between irq vector number and queue id.
v5 changes:
- Create this new patch file for changed struct rte_intr_handle that
other patches depend on, to avoid breaking git bisect.
.../linuxapp/eal/include/exec-env/rte_interrupts.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
Comments
2015-07-17 14:16, Cunming Liang:
> +#ifdef RTE_NEXT_ABI
> + /**
> + * RTE_NEXT_ABI will be removed from v2.2.
> + * It's only used to avoid ABI(unannounced) broken in v2.1.
> + * Make sure being aware of the impact before turning on the feature.
> + */
We are not going to put this comment each time NEXT_ABI is used with ifdef.
On 7/20/2015 7:31 AM, Thomas Monjalon wrote:
> 2015-07-17 14:16, Cunming Liang:
>> +#ifdef RTE_NEXT_ABI
>> + /**
>> + * RTE_NEXT_ABI will be removed from v2.2.
>> + * It's only used to avoid ABI(unannounced) broken in v2.1.
>> + * Make sure being aware of the impact before turning on the feature.
>> + */
> We are not going to put this comment each time NEXT_ABI is used with ifdef.
Ok, will remove the comment.
@@ -38,6 +38,8 @@
#ifndef _RTE_LINUXAPP_INTERRUPTS_H_
#define _RTE_LINUXAPP_INTERRUPTS_H_
+#define RTE_MAX_RXTX_INTR_VEC_ID 32
+
enum rte_intr_handle_type {
RTE_INTR_HANDLE_UNKNOWN = 0,
RTE_INTR_HANDLE_UIO, /**< uio device handle */
@@ -58,6 +60,17 @@ struct rte_intr_handle {
};
int fd; /**< interrupt event file descriptor */
enum rte_intr_handle_type type; /**< handle type */
+#ifdef RTE_NEXT_ABI
+ /**
+ * RTE_NEXT_ABI will be removed from v2.2.
+ * It's only used to avoid ABI(unannounced) broken in v2.1.
+ * Make sure being aware of the impact before turning on the feature.
+ */
+ uint32_t max_intr; /**< max interrupt requested */
+ uint32_t nb_efd; /**< number of available efd(event fd) */
+ int efds[RTE_MAX_RXTX_INTR_VEC_ID]; /**< intr vectors/efds mapping */
+ int *intr_vec; /**< intr vector number array */
+#endif
};
#endif /* _RTE_LINUXAPP_INTERRUPTS_H_ */