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
v6
* fix compilation
v7
* include dev ops for secondary
v8
* fix wrong memzone alloaction
v9
* fix comments
---
drivers/raw/ioat/ioat_common.c | 15 +++++++++++++++
drivers/raw/ioat/ioat_rawdev.c | 15 +++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/drivers/raw/ioat/ioat_common.c b/drivers/raw/ioat/ioat_common.c
index 142e171bc9..a80d304214 100644
--- a/drivers/raw/ioat/ioat_common.c
+++ b/drivers/raw/ioat/ioat_common.c
@@ -215,6 +215,21 @@ 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.
+ */
+ 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;
+ rawdev->dev_ops = ops;
+ rawdev->device = dev;
+ return 0;
+ }
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);
diff --git a/drivers/raw/ioat/ioat_rawdev.c b/drivers/raw/ioat/ioat_rawdev.c
index 2c88b4369f..21b71b45ed 100644
--- a/drivers/raw/ioat/ioat_rawdev.c
+++ b/drivers/raw/ioat/ioat_rawdev.c
@@ -165,6 +165,21 @@ 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.
+ */
+ 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;
+ rawdev->dev_ops = &ioat_rawdev_ops;
+ rawdev->device = &dev->device;
+ return 0;
+ }
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);
--
2.25.1
