diff options
Diffstat (limited to 'net/core/devmem.c')
| -rw-r--r-- | net/core/devmem.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/net/core/devmem.c b/net/core/devmem.c index 11b91c12ee11..3bba3f018df0 100644 --- a/net/core/devmem.c +++ b/net/core/devmem.c @@ -8,6 +8,7 @@ */ #include <linux/dma-buf.h> +#include <linux/ethtool_netlink.h> #include <linux/genalloc.h> #include <linux/mm.h> #include <linux/netdevice.h> @@ -140,6 +141,16 @@ int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx, return -ERANGE; } + if (dev->cfg->hds_config != ETHTOOL_TCP_DATA_SPLIT_ENABLED) { + NL_SET_ERR_MSG(extack, "tcp-data-split is disabled"); + return -EINVAL; + } + + if (dev->cfg->hds_thresh) { + NL_SET_ERR_MSG(extack, "hds-thresh is not zero"); + return -EINVAL; + } + rxq = __netif_get_rx_queue(dev, rxq_idx); if (rxq->mp_params.mp_priv) { NL_SET_ERR_MSG(extack, "designated queue already memory provider bound"); @@ -331,11 +342,11 @@ int mp_dmabuf_devmem_init(struct page_pool *pool) if (!binding) return -EINVAL; - if (!pool->dma_map) - return -EOPNOTSUPP; - - if (pool->dma_sync) - return -EOPNOTSUPP; + /* dma-buf dma addresses do not need and should not be used with + * dma_sync_for_cpu/device. Force disable dma_sync. + */ + pool->dma_sync = false; + pool->dma_sync_for_cpu = false; if (pool->p.order != 0) return -E2BIG; |