diff options
| author | Matias Elo <matias.elo@nokia.com> | 2022-12-28 16:42:43 +0200 |
|---|---|---|
| committer | Petri Savolainen <petri.savolainen@nokia.com> | 2022-12-29 14:49:17 +0200 |
| commit | ccb7b35bb75366968e316bbadd6a030a976e5b21 (patch) | |
| tree | f101296ed18d7cf66d943ac4b986cfe55e91acb4 | |
| parent | 50f60d94806d6dcaf15b6459642af2e48a431f71 (diff) | |
linux-gen: dpdk: fix zero-copy mode with vfio-pci driver
For DPDK zero-copy pktio to work with VFIO the packet pool memory has to be
mapped for DMA access.
Fixes: https://github.com/OpenDataPlane/odp/issues/1718
Signed-off-by: Matias Elo <matias.elo@nokia.com>
Reviewed-by: Tuomas Taipale <tuomas.taipale@nokia.com>
| -rw-r--r-- | platform/linux-generic/pktio/dpdk.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/platform/linux-generic/pktio/dpdk.c b/platform/linux-generic/pktio/dpdk.c index 7e9db90ce..fa40d1bde 100644 --- a/platform/linux-generic/pktio/dpdk.c +++ b/platform/linux-generic/pktio/dpdk.c @@ -49,6 +49,7 @@ #include <rte_tcp.h> #include <rte_udp.h> #include <rte_version.h> +#include <rte_vfio.h> /* NUMA is not supported on all platforms */ #ifdef _ODP_HAVE_NUMA_LIBRARY @@ -438,6 +439,15 @@ static struct rte_mempool *mbuf_pool_create(const char *name, goto fail; } + /* Map pages for DMA access to enable VFIO usage */ + for (uint64_t i = 0; i < pool_entry->shm_size; i += page_size) { + addr = pool_entry->base_addr + i; + + rte_vfio_container_dma_map(RTE_VFIO_DEFAULT_CONTAINER_FD, + (uint64_t)(uintptr_t)addr, + rte_mem_virt2iova(addr), page_size); + } + rte_mempool_obj_iter(mp, pktmbuf_init, NULL); return mp; |