From abf4c84b25d114a32c7d2dfc77414964805a4ca5 Mon Sep 17 00:00:00 2001 From: Bernard Iremonger Date: Wed, 15 Jul 2015 14:51:00 +0100 Subject: [PATCH] virtio: support port hotplug This patch depends on the Port Hotplug Framework. It implements the eth_dev_uninit_t() function for virtio pmd. Signed-off-by: Bernard Iremonger Acked-by: Stephen Hemminger --- drivers/net/virtio/virtio_ethdev.c | 72 +++++++++++++++++++++++++++--- 1 file changed, 65 insertions(+), 7 deletions(-) diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index fe5f9a15ab..b88f29759d 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -1,7 +1,7 @@ /*- * BSD LICENSE * - * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -51,6 +51,7 @@ #include #include #include +#include #include #include @@ -63,6 +64,7 @@ static int eth_virtio_dev_init(struct rte_eth_dev *eth_dev); +static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev); static int virtio_dev_configure(struct rte_eth_dev *dev); static int virtio_dev_start(struct rte_eth_dev *dev); static void virtio_dev_stop(struct rte_eth_dev *dev); @@ -324,8 +326,12 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev, mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, socket_id, 0, VIRTIO_PCI_VRING_ALIGN); if (mz == NULL) { - rte_free(vq); - return -ENOMEM; + if (rte_errno == EEXIST) + mz = rte_memzone_lookup(vq_name); + if (mz == NULL) { + rte_free(vq); + return -ENOMEM; + } } /* @@ -358,8 +364,13 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev, vq_size * hw->vtnet_hdr_size, socket_id, 0, RTE_CACHE_LINE_SIZE); if (vq->virtio_net_hdr_mz == NULL) { - rte_free(vq); - return -ENOMEM; + if (rte_errno == EEXIST) + vq->virtio_net_hdr_mz = + rte_memzone_lookup(vq_name); + if (vq->virtio_net_hdr_mz == NULL) { + rte_free(vq); + return -ENOMEM; + } } vq->virtio_net_hdr_mem = vq->virtio_net_hdr_mz->phys_addr; @@ -372,8 +383,13 @@ int virtio_dev_queue_setup(struct rte_eth_dev *dev, vq->virtio_net_hdr_mz = rte_memzone_reserve_aligned(vq_name, PAGE_SIZE, socket_id, 0, RTE_CACHE_LINE_SIZE); if (vq->virtio_net_hdr_mz == NULL) { - rte_free(vq); - return -ENOMEM; + if (rte_errno == EEXIST) + vq->virtio_net_hdr_mz = + rte_memzone_lookup(vq_name); + if (vq->virtio_net_hdr_mz == NULL) { + rte_free(vq); + return -ENOMEM; + } } vq->virtio_net_hdr_mem = vq->virtio_net_hdr_mz->phys_addr; @@ -1250,12 +1266,52 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) return 0; } +static int +eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev) +{ + struct rte_pci_device *pci_dev; + struct virtio_hw *hw = eth_dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + if (rte_eal_process_type() == RTE_PROC_SECONDARY) + return -EPERM; + + if (hw->started == 1) { + virtio_dev_stop(eth_dev); + virtio_dev_close(eth_dev); + } + pci_dev = eth_dev->pci_dev; + + eth_dev->dev_ops = NULL; + eth_dev->tx_pkt_burst = NULL; + eth_dev->rx_pkt_burst = NULL; + + rte_free(hw->cvq); + hw->cvq = NULL; + + rte_free(eth_dev->data->mac_addrs); + eth_dev->data->mac_addrs = NULL; + + /* reset interrupt callback */ + if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC) + rte_intr_callback_unregister(&pci_dev->intr_handle, + virtio_interrupt_handler, + eth_dev); + + PMD_INIT_LOG(DEBUG, "dev_uninit completed"); + + return 0; +} + static struct eth_driver rte_virtio_pmd = { .pci_drv = { .name = "rte_virtio_pmd", .id_table = pci_id_virtio_map, + .drv_flags = RTE_PCI_DRV_DETACHABLE, }, .eth_dev_init = eth_virtio_dev_init, + .eth_dev_uninit = eth_virtio_dev_uninit, .dev_private_size = sizeof(struct virtio_hw), }; @@ -1398,6 +1454,8 @@ static void virtio_dev_free_mbufs(struct rte_eth_dev *dev) "Before freeing rxq[%d] used and unused buf", i); VIRTQUEUE_DUMP((struct virtqueue *)dev->data->rx_queues[i]); + PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", + i, dev->data->rx_queues[i]); while ((buf = (struct rte_mbuf *)virtqueue_detatch_unused( dev->data->rx_queues[i])) != NULL) { rte_pktmbuf_free(buf); -- 2.20.1