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 --- drivers/raw/ioat/ioat_common.c | 22 ++++++++++++++++++++-- drivers/raw/ioat/ioat_rawdev.c | 21 +++++++++++++++++++-- 2 files changed, 39 insertions(+), 4 deletions(-) diff --git a/drivers/raw/ioat/ioat_common.c b/drivers/raw/ioat/ioat_common.c index 142e171bc9..2428c8a5b6 100644 --- a/drivers/raw/ioat/ioat_common.c +++ b/drivers/raw/ioat/ioat_common.c @@ -215,14 +215,32 @@ 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; + rawdev->dev_ops = ops; + rawdev->device = dev; + 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..e152004219 100644 --- a/drivers/raw/ioat/ioat_rawdev.c +++ b/drivers/raw/ioat/ioat_rawdev.c @@ -165,9 +165,26 @@ 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; + rawdev->dev_ops = &ioat_rawdev_ops; + rawdev->device = &dev->device; + 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