Add support for secondary processes in ioat devices. The update
allocates a memzone for a primary process or returns it in a
secondary process.
Signed-off-by: Kumar Amber <kumar.am...@intel.com>
---
v5
* add error check for memzone lookup
---
drivers/raw/ioat/ioat_common.c | 21 +++++++++++++++++++--
drivers/raw/ioat/ioat_rawdev.c | 19 +++++++++++++++++--
2 files changed, 36 insertions(+), 4 deletions(-)
diff --git a/drivers/raw/ioat/ioat_common.c b/drivers/raw/ioat/ioat_common.c
index 142e171bc9..91f0d5122c 100644
--- a/drivers/raw/ioat/ioat_common.c
+++ b/drivers/raw/ioat/ioat_common.c
@@ -215,14 +215,31 @@ idxd_rawdev_create(const char *name, struct rte_device
*dev,
goto cleanup;
}
+ /* Allocate memory for the primary process or else return the memory
+ * of primary memzone for the secondary process.
+ */
snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
- mz = rte_memzone_reserve(mz_name, sizeof(struct idxd_rawdev),
- dev->numa_node, RTE_MEMZONE_IOVA_CONTIG);
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ mz = rte_memzone_lookup(mz_name);
+ if (mz == NULL) {
+ IOAT_PMD_ERR("Unable lookup memzone for private
data\n");
+ ret = -ENOMEM;
+ goto cleanup;
+ }
+ }
+ rawdev->dev_private = mz->addr;
+ return 0;
+ }
+ mz = rte_memzone_reserve(mz_name,
+ sizeof(struct rte_ioat_rawdev),
+ dev->numa_node,
+ RTE_MEMZONE_IOVA_CONTIG);
if (mz == NULL) {
IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
ret = -ENOMEM;
goto cleanup;
}
+
rawdev->dev_private = mz->addr;
rawdev->dev_ops = ops;
rawdev->device = dev;
diff --git a/drivers/raw/ioat/ioat_rawdev.c b/drivers/raw/ioat/ioat_rawdev.c
index 2c88b4369f..a9846e75f2 100644
--- a/drivers/raw/ioat/ioat_rawdev.c
+++ b/drivers/raw/ioat/ioat_rawdev.c
@@ -165,9 +165,24 @@ ioat_rawdev_create(const char *name, struct rte_pci_device
*dev)
goto cleanup;
}
+ /* Allocate memory for the primary process or else return the memory
+ * of primary memzone for the secondary process.
+ */
snprintf(mz_name, sizeof(mz_name), "rawdev%u_private", rawdev->dev_id);
- mz = rte_memzone_reserve(mz_name, sizeof(struct rte_ioat_rawdev),
- dev->device.numa_node, RTE_MEMZONE_IOVA_CONTIG);
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ mz = rte_memzone_lookup(mz_name);
+ if (mz == NULL) {
+ IOAT_PMD_ERR("Unable lookup memzone for private
data\n");
+ ret = -ENOMEM;
+ goto cleanup;
+ }
+ rawdev->dev_private = mz->addr;
+ return 0;
+ }
+ mz = rte_memzone_reserve(mz_name,
+ sizeof(struct rte_ioat_rawdev),
+ dev->device.numa_node,
+ RTE_MEMZONE_IOVA_CONTIG);
if (mz == NULL) {
IOAT_PMD_ERR("Unable to reserve memzone for private data\n");
ret = -ENOMEM;
--
2.25.1
