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From: Bruce Richardson <bruce.richardson@intel.com>
To: dev@dpdk.org
Cc: kevin.laatz@intel.com,
sunil.pai.g@intel.com,
jiayu.hu@intel.com
Date: Fri, 30 Apr 2021 16:06:32 +0100
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Subject: [dpdk-dev] [PATCH v4 07/12] raw/ioat: allow perform operations
function to return error
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From: Kevin Laatz <kevin.laatz@intel.com>
Change the return type for the rte_ioat_perform_ops() function from void to
int to allow the possibility of returning an error code in future, should
it be necessary.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
---
drivers/raw/ioat/rte_ioat_rawdev.h | 4 +++-
drivers/raw/ioat/rte_ioat_rawdev_fns.h | 11 +++++++----
2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/raw/ioat/rte_ioat_rawdev.h b/drivers/raw/ioat/rte_ioat_rawdev.h
index f9e8425a7f..e5a22a0799 100644
--- a/drivers/raw/ioat/rte_ioat_rawdev.h
+++ b/drivers/raw/ioat/rte_ioat_rawdev.h
@@ -124,8 +124,10 @@ rte_ioat_fence(int dev_id);
*
* @param dev_id
* The rawdev device id of the ioat instance
+ * @return
+ * 0 on success. Non-zero return on error.
*/
-static inline void
+static inline int
__rte_experimental
rte_ioat_perform_ops(int dev_id);
diff --git a/drivers/raw/ioat/rte_ioat_rawdev_fns.h b/drivers/raw/ioat/rte_ioat_rawdev_fns.h
index e96edc9053..477c1b7b41 100644
--- a/drivers/raw/ioat/rte_ioat_rawdev_fns.h
+++ b/drivers/raw/ioat/rte_ioat_rawdev_fns.h
@@ -291,7 +291,7 @@ __ioat_fence(int dev_id)
/*
* Trigger hardware to begin performing enqueued operations
*/
-static __rte_always_inline void
+static __rte_always_inline int
__ioat_perform_ops(int dev_id)
{
struct rte_ioat_rawdev *ioat =
@@ -301,6 +301,8 @@ __ioat_perform_ops(int dev_id)
rte_compiler_barrier();
*ioat->doorbell = ioat->next_write;
ioat->xstats.started = ioat->xstats.enqueued;
+
+ return 0;
}
/**
@@ -462,7 +464,7 @@ __idxd_movdir64b(volatile void *dst, const void *src)
: "a" (dst), "d" (src));
}
-static __rte_always_inline void
+static __rte_always_inline int
__idxd_perform_ops(int dev_id)
{
struct rte_idxd_rawdev *idxd =
@@ -470,7 +472,7 @@ __idxd_perform_ops(int dev_id)
struct rte_idxd_desc_batch *b = &idxd->batch_ring[idxd->next_batch];
if (b->submitted || b->op_count == 0)
- return;
+ return 0;
b->hdl_end = idxd->next_free_hdl;
b->comp.status = 0;
b->submitted = 1;
@@ -480,6 +482,7 @@ __idxd_perform_ops(int dev_id)
if (++idxd->next_batch == idxd->batch_ring_sz)
idxd->next_batch = 0;
idxd->xstats.started = idxd->xstats.enqueued;
+ return 0;
}
static __rte_always_inline int
@@ -558,7 +561,7 @@ rte_ioat_fence(int dev_id)
return __ioat_fence(dev_id);
}
-static inline void
+static inline int
rte_ioat_perform_ops(int dev_id)
{
enum rte_ioat_dev_type *type =
--
2.30.2