diff options
Diffstat (limited to 'src/vnet/devices/virtio')
| -rw-r--r-- | src/vnet/devices/virtio/pci.c | 74 | ||||
| -rw-r--r-- | src/vnet/devices/virtio/virtio.h | 1 |
2 files changed, 60 insertions, 15 deletions
diff --git a/src/vnet/devices/virtio/pci.c b/src/vnet/devices/virtio/pci.c index c7398c95fe8..cb3a3a73632 100644 --- a/src/vnet/devices/virtio/pci.c +++ b/src/vnet/devices/virtio/pci.c @@ -314,19 +314,22 @@ virtio_pci_is_link_up (vlib_main_t * vm, virtio_if_t * vif) } static void -virtio_pci_irq_0_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line) +virtio_pci_irq_queue_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, + u16 line) { vnet_main_t *vnm = vnet_get_main (); virtio_main_t *vim = &virtio_main; uword pd = vlib_pci_get_private_data (vm, h); virtio_if_t *vif = pool_elt_at_index (vim->interfaces, pd); + line--; u16 qid = line; vnet_device_input_set_interrupt_pending (vnm, vif->hw_if_index, qid); } static void -virtio_pci_irq_1_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line) +virtio_pci_irq_config_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, + u16 line) { vnet_main_t *vnm = vnet_get_main (); virtio_main_t *vim = &virtio_main; @@ -363,10 +366,13 @@ virtio_pci_irq_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h) * been made by the device which requires servicing. */ if (isr & VIRTIO_PCI_ISR_INTR) - virtio_pci_irq_0_handler (vm, h, line); + { + for (; line < vif->num_rxqs; line++) + virtio_pci_irq_queue_handler (vm, h, (line + 1)); + } if (isr & VIRTIO_PCI_ISR_CONFIG) - virtio_pci_irq_1_handler (vm, h, line); + virtio_pci_irq_config_handler (vm, h, line); } inline void @@ -973,11 +979,13 @@ virtio_pci_read_caps (vlib_main_t * vm, virtio_if_t * vif) { virtio_log_debug (vif, "msix interrupt enabled"); vif->msix_enabled = VIRTIO_MSIX_ENABLED; + vif->msix_table_size = table_size; } else { virtio_log_debug (vif, "msix interrupt disabled"); vif->msix_enabled = VIRTIO_MSIX_DISABLED; + vif->msix_table_size = 0; } } @@ -1106,6 +1114,20 @@ virtio_pci_device_init (vlib_main_t * vm, virtio_if_t * vif, goto err; } + if (vif->msix_enabled == VIRTIO_MSIX_ENABLED) + { + if (vif->msix_table_size <= vif->max_queue_pairs) + { + virtio_log_error (vif, + "error MSIX lines (%u) <= Number of RXQs (%u)", + vif->msix_table_size, vif->max_queue_pairs); + return clib_error_return (error, + "error MSIX lines (%u) <= Number of RXQs (%u)", + vif->msix_table_size, + vif->max_queue_pairs); + } + } + for (int i = 0; i < vif->max_queue_pairs; i++) { if ((error = virtio_pci_vring_init (vm, vif, RX_QUEUE (i)))) @@ -1173,12 +1195,30 @@ virtio_pci_device_init (vlib_main_t * vm, virtio_if_t * vif, */ if (vif->msix_enabled == VIRTIO_MSIX_ENABLED) { - if (virtio_pci_legacy_set_config_irq (vm, vif, 1) == + int i, j; + if (virtio_pci_legacy_set_config_irq (vm, vif, 0) == VIRTIO_MSI_NO_VECTOR) - virtio_log_warning (vif, "config vector 1 is not set"); - if (virtio_pci_legacy_set_queue_irq (vm, vif, 0, 0) == - VIRTIO_MSI_NO_VECTOR) - virtio_log_warning (vif, "queue vector 0 is not set"); + { + virtio_log_warning (vif, "config vector 0 is not set"); + } + else + { + virtio_log_debug (vif, "config msix vector is set at 0"); + } + for (i = 0, j = 1; i < vif->max_queue_pairs; i++, j++) + { + if (virtio_pci_legacy_set_queue_irq (vm, vif, j, RX_QUEUE (i)) == + VIRTIO_MSI_NO_VECTOR) + { + virtio_log_warning (vif, "queue (%u) vector is not set at %u", + RX_QUEUE (i), j); + } + else + { + virtio_log_debug (vif, "%s (%u) %s %u", "queue", + RX_QUEUE (i), "msix vector is set at", j); + } + } } /* @@ -1198,6 +1238,7 @@ virtio_pci_create_if (vlib_main_t * vm, virtio_pci_create_if_args_t * args) virtio_if_t *vif; vlib_pci_dev_handle_t h; clib_error_t *error = 0; + u32 interrupt_count = 0; /* *INDENT-OFF* */ pool_foreach (vif, vim->interfaces, ({ @@ -1250,18 +1291,21 @@ virtio_pci_create_if (vlib_main_t * vm, virtio_pci_create_if_args_t * args) goto error; } - if (vlib_pci_get_num_msix_interrupts (vm, h) > 1) + interrupt_count = vlib_pci_get_num_msix_interrupts (vm, h); + if (interrupt_count > 1) { if ((error = vlib_pci_register_msix_handler (vm, h, 0, 1, - &virtio_pci_irq_0_handler))) + &virtio_pci_irq_config_handler))) { args->rv = VNET_API_ERROR_INVALID_REGISTRATION; virtio_log_error (vif, "error encountered on pci register msix handler 0"); goto error; } - if ((error = vlib_pci_register_msix_handler (vm, h, 1, 1, - &virtio_pci_irq_1_handler))) + + if ((error = + vlib_pci_register_msix_handler (vm, h, 1, (interrupt_count - 1), + &virtio_pci_irq_queue_handler))) { args->rv = VNET_API_ERROR_INVALID_REGISTRATION; virtio_log_error (vif, @@ -1269,7 +1313,7 @@ virtio_pci_create_if (vlib_main_t * vm, virtio_pci_create_if_args_t * args) goto error; } - if ((error = vlib_pci_enable_msix_irq (vm, h, 0, 2))) + if ((error = vlib_pci_enable_msix_irq (vm, h, 0, interrupt_count))) { virtio_log_error (vif, "error encountered on pci enable msix irq"); goto error; @@ -1277,7 +1321,7 @@ virtio_pci_create_if (vlib_main_t * vm, virtio_pci_create_if_args_t * args) vif->support_int_mode = 1; virtio_log_debug (vif, "device supports msix interrupts"); } - else if (vlib_pci_get_num_msix_interrupts (vm, h) == 1) + else if (interrupt_count == 1) { /* * if msix table-size is 1, fall back to intX. diff --git a/src/vnet/devices/virtio/virtio.h b/src/vnet/devices/virtio/virtio.h index 0520354b3af..04896ed6e2a 100644 --- a/src/vnet/devices/virtio/virtio.h +++ b/src/vnet/devices/virtio/virtio.h @@ -179,6 +179,7 @@ typedef struct clib_error_t *error; u8 support_int_mode; /* support interrupt mode */ u16 max_queue_pairs; + u16 msix_table_size; u8 status; u8 mac_addr[6]; u8 *host_if_name; |