From bc230b569e7faf3e994fc3f1953cfa2fbb8c72cb Mon Sep 17 00:00:00 2001 From: Kumar Amber Date: Fri, 8 Jan 2021 22:22:16 +0530 Subject: [PATCH] raw/ioat: support secondary process 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 Acked-by: Bruce Richardson --- 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..d055c36a2a 100644 --- a/drivers/raw/ioat/ioat_common.c +++ b/drivers/raw/ioat/ioat_common.c @@ -215,7 +215,22 @@ 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); + 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 idxd_rawdev), dev->numa_node, RTE_MEMZONE_IOVA_CONTIG); if (mz == NULL) { diff --git a/drivers/raw/ioat/ioat_rawdev.c b/drivers/raw/ioat/ioat_rawdev.c index 2c88b4369f..77216f67f5 100644 --- a/drivers/raw/ioat/ioat_rawdev.c +++ b/drivers/raw/ioat/ioat_rawdev.c @@ -165,7 +165,22 @@ 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); + 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) { -- 2.20.1