From: Junjie Chen Date: Mon, 15 Jan 2018 11:32:19 +0000 (-0500) Subject: vhost: do deep copy while reallocating queue X-Git-Tag: spdx-start~59 X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=2651726defb7385669fc0538fa7185d290342035 vhost: do deep copy while reallocating queue When vhost reallocate dev and vq for NUMA enabled case, it doesn't perform deep copy, which lead to 1) zmbuf list not valid 2) remote memory access. This patch is to re-initlize the zmbuf list and also do the deep copy. Signed-off-by: Junjie Chen Reviewed-by: Zhiyong Yang Reviewed-by: Maxime Coquelin Acked-by: Yuanhan Liu --- diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index e54795a412..0ea28ecee9 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -232,6 +232,7 @@ vhost_user_set_vring_num(struct virtio_net *dev, "zero copy is force disabled\n"); dev->dequeue_zero_copy = 0; } + TAILQ_INIT(&vq->zmbuf_list); } vq->shadow_used_ring = rte_malloc(NULL, @@ -266,6 +267,9 @@ numa_realloc(struct virtio_net *dev, int index) int oldnode, newnode; struct virtio_net *old_dev; struct vhost_virtqueue *old_vq, *vq; + struct zcopy_mbuf *new_zmbuf; + struct vring_used_elem *new_shadow_used_ring; + struct batch_copy_elem *new_batch_copy_elems; int ret; old_dev = dev; @@ -290,6 +294,33 @@ numa_realloc(struct virtio_net *dev, int index) return dev; memcpy(vq, old_vq, sizeof(*vq)); + TAILQ_INIT(&vq->zmbuf_list); + + new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size * + sizeof(struct zcopy_mbuf), 0, newnode); + if (new_zmbuf) { + rte_free(vq->zmbufs); + vq->zmbufs = new_zmbuf; + } + + new_shadow_used_ring = rte_malloc_socket(NULL, + vq->size * sizeof(struct vring_used_elem), + RTE_CACHE_LINE_SIZE, + newnode); + if (new_shadow_used_ring) { + rte_free(vq->shadow_used_ring); + vq->shadow_used_ring = new_shadow_used_ring; + } + + new_batch_copy_elems = rte_malloc_socket(NULL, + vq->size * sizeof(struct batch_copy_elem), + RTE_CACHE_LINE_SIZE, + newnode); + if (new_batch_copy_elems) { + rte_free(vq->batch_copy_elems); + vq->batch_copy_elems = new_batch_copy_elems; + } + rte_free(old_vq); }