diff options
Diffstat (limited to 'src/vnet/dev/dev.c')
| -rw-r--r-- | src/vnet/dev/dev.c | 456 |
1 files changed, 456 insertions, 0 deletions
diff --git a/src/vnet/dev/dev.c b/src/vnet/dev/dev.c new file mode 100644 index 00000000000..538d1449998 --- /dev/null +++ b/src/vnet/dev/dev.c @@ -0,0 +1,456 @@ +/* SPDX-License-Identifier: Apache-2.0 + * Copyright (c) 2023 Cisco Systems, Inc. + */ + +#include "vppinfra/pool.h" +#include <vnet/vnet.h> +#include <vnet/ethernet/ethernet.h> +#include <vnet/dev/dev.h> +#include <vnet/dev/log.h> +#include <vnet/dev/counters.h> + +VLIB_REGISTER_LOG_CLASS (dev_log, static) = { + .class_name = "dev", +}; + +vnet_dev_main_t vnet_dev_main = { .next_rx_queue_thread = 1 }; + +vnet_dev_bus_t * +vnet_dev_find_device_bus (vlib_main_t *vm, vnet_dev_device_id_t id) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_bus_t *bus; + + pool_foreach (bus, dm->buses) + { + int n = strlen (bus->registration->name); + int l = strlen (id); + int dl = strlen (VNET_DEV_DEVICE_ID_PREFIX_DELIMITER); + + if (l <= n + dl) + continue; + + if (strncmp (bus->registration->name, id, n)) + continue; + + if (strncmp (VNET_DEV_DEVICE_ID_PREFIX_DELIMITER, id + n, dl)) + continue; + + return bus; + } + + return 0; +} + +void * +vnet_dev_get_device_info (vlib_main_t *vm, vnet_dev_device_id_t id) +{ + vnet_dev_bus_t *bus; + + bus = vnet_dev_find_device_bus (vm, id); + if (bus == 0) + return 0; + + return bus->ops.get_device_info (vm, id); +} + +vnet_dev_t * +vnet_dev_alloc (vlib_main_t *vm, vnet_dev_device_id_t id, + vnet_dev_driver_t *driver) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_t *dev = 0, **devp = 0; + + dev = vnet_dev_alloc_with_data (sizeof (vnet_dev_t), + driver->registration->device_data_sz); + + pool_get (dm->devices, devp); + devp[0] = dev; + dev->index = devp - dm->devices; + dev->driver_index = driver->index; + dev->ops = driver->registration->ops; + dev->bus_index = driver->bus_index; + clib_memcpy (dev->device_id, id, sizeof (dev->device_id)); + hash_set (dm->device_index_by_id, dev->device_id, dev->index); + + if ((vnet_dev_process_create (vm, dev)) == VNET_DEV_OK) + return dev; + + vnet_dev_free (vm, dev); + return 0; +} + +vnet_dev_rv_t +vnet_dev_init (vlib_main_t *vm, vnet_dev_t *dev) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); + vnet_dev_rv_t rv; + + vnet_dev_validate (vm, dev); + + if ((rv = bus->ops.device_open (vm, dev)) != VNET_DEV_OK) + return rv; + + if ((rv = dev->ops.alloc (vm, dev)) != VNET_DEV_OK) + { + log_err (dev, "device init failed [rv %d]", rv); + if (dev->ops.deinit) + dev->ops.deinit (vm, dev); + if (dev->ops.free) + dev->ops.free (vm, dev); + return rv; + } + + if ((rv = dev->ops.init (vm, dev)) != VNET_DEV_OK) + { + log_err (dev, "device init failed [rv %d]", rv); + if (dev->ops.deinit) + dev->ops.deinit (vm, dev); + if (dev->ops.free) + dev->ops.free (vm, dev); + return rv; + } + + dev->initialized = 1; + dev->not_first_init = 1; + return VNET_DEV_OK; +} + +void +vnet_dev_deinit (vlib_main_t *vm, vnet_dev_t *dev) +{ + ASSERT (dev->initialized == 1); + vnet_dev_bus_t *bus; + + vnet_dev_validate (vm, dev); + + foreach_vnet_dev_port (p, dev) + ASSERT (p->interface_created == 0); + + if (dev->ops.deinit) + dev->ops.deinit (vm, dev); + + bus = vnet_dev_get_bus (dev); + if (bus->ops.device_close) + bus->ops.device_close (vm, dev); + + vnet_dev_process_quit (vm, dev); + + dev->initialized = 0; +} + +void +vnet_dev_free (vlib_main_t *vm, vnet_dev_t *dev) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + + vnet_dev_validate (vm, dev); + + ASSERT (dev->initialized == 0); + + foreach_vnet_dev_port (p, dev) + vnet_dev_port_free (vm, p); + + vec_free (dev->description); + pool_free (dev->ports); + pool_free (dev->periodic_ops); + hash_unset (dm->device_index_by_id, dev->device_id); + pool_put_index (dm->devices, dev->index); +} + +vnet_dev_rv_t +vnet_dev_reset (vlib_main_t *vm, vnet_dev_t *dev) +{ + vnet_dev_rv_t rv; + + ASSERT (dev->initialized == 1); + vnet_dev_validate (vm, dev); + + if (dev->ops.reset == 0) + return VNET_DEV_ERR_NOT_SUPPORTED; + + if ((rv = dev->ops.reset (vm, dev)) != VNET_DEV_OK) + { + log_err (dev, "device reset failed [rv %d]", rv); + return rv; + } + + return VNET_DEV_OK; +} + +void +vnet_dev_detach (vlib_main_t *vm, vnet_dev_t *dev) +{ + foreach_vnet_dev_port (p, dev) + if (p->interface_created) + vnet_dev_port_if_remove (vm, p); + vnet_dev_deinit (vm, dev); + vnet_dev_free (vm, dev); +} + +vnet_dev_rv_t +vnet_dev_dma_mem_alloc (vlib_main_t *vm, vnet_dev_t *dev, u32 size, u32 align, + void **pp) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); + vnet_dev_rv_t rv; + + vnet_dev_validate (vm, dev); + + if (!bus->ops.dma_mem_alloc_fn) + return VNET_DEV_ERR_NOT_SUPPORTED; + + rv = bus->ops.dma_mem_alloc_fn (vm, dev, size, align, pp); + if (rv == VNET_DEV_OK) + log_debug (dev, "%u bytes va %p dma-addr 0x%lx numa %u align %u", size, + *pp, vnet_dev_get_dma_addr (vm, dev, *pp), dev->numa_node, + align); + return rv; +} + +void +vnet_dev_dma_mem_free (vlib_main_t *vm, vnet_dev_t *dev, void *p) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_bus_t *bus = pool_elt_at_index (dm->buses, dev->bus_index); + + vnet_dev_validate (vm, dev); + + if (p == 0 || !bus->ops.dma_mem_free_fn) + return; + + return bus->ops.dma_mem_free_fn (vm, dev, p); +} + +clib_error_t * +vnet_dev_admin_up_down_fn (vnet_main_t *vnm, u32 hw_if_index, u32 flags) +{ + vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); + vlib_main_t *vm = vlib_get_main (); + vnet_dev_port_t *p = vnet_dev_get_port_from_dev_instance (hi->dev_instance); + vnet_dev_rv_t rv = VNET_DEV_OK; + u32 is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; + + if (is_up && p->started == 0) + rv = vnet_dev_process_call_port_op (vm, p, vnet_dev_port_start); + else if (!is_up && p->started) + rv = vnet_dev_process_call_port_op_no_rv (vm, p, vnet_dev_port_stop); + + if (rv != VNET_DEV_OK) + return clib_error_return (0, "failed to change port admin state: %U", + format_vnet_dev_rv, rv); + + return 0; +} + +static void +vnet_dev_feature_update_cb (u32 sw_if_index, u8 arc_index, u8 is_enable, + void *cb) +{ + vlib_main_t *vm = vlib_get_main (); + vnet_main_t *vnm = vnet_get_main (); + vnet_feature_main_t *fm = &feature_main; + vnet_feature_config_main_t *cm; + vnet_dev_main_t *vdm = &vnet_dev_main; + vnet_dev_port_t *port; + vnet_hw_interface_t *hw; + u32 current_config_index = ~0; + u32 next_index = ~0; + int update_runtime = 0; + + if (arc_index != vdm->eth_port_rx_feature_arc_index) + return; + + hw = vnet_get_sup_hw_interface (vnm, sw_if_index); + port = vnet_dev_get_port_from_dev_instance (hw->dev_instance); + + if (port == 0 || port->intf.sw_if_index != sw_if_index) + return; + + if (vnet_have_features (arc_index, sw_if_index)) + { + cm = &fm->feature_config_mains[arc_index]; + current_config_index = + vec_elt (cm->config_index_by_sw_if_index, sw_if_index); + vnet_get_config_data (&cm->config_main, ¤t_config_index, + &next_index, 0); + if (port->intf.feature_arc == 0 || + port->intf.rx_next_index != next_index || + port->intf.current_config_index != current_config_index) + { + port->intf.current_config_index = current_config_index; + port->intf.rx_next_index = next_index; + port->intf.feature_arc_index = arc_index; + port->intf.feature_arc = 1; + update_runtime = 1; + } + } + else + { + if (port->intf.feature_arc) + { + port->intf.current_config_index = 0; + port->intf.rx_next_index = + port->intf.redirect_to_node ? + port->intf.redirect_to_node_next_index : + vnet_dev_default_next_index_by_port_type[port->attr.type]; + port->intf.feature_arc_index = 0; + port->intf.feature_arc = 0; + update_runtime = 1; + } + } + + if (update_runtime) + { + foreach_vnet_dev_port_rx_queue (rxq, port) + vnet_dev_rx_queue_rt_request ( + vm, rxq, + (vnet_dev_rx_queue_rt_req_t){ .update_next_index = 1, + .update_feature_arc = 1 }); + log_debug (port->dev, "runtime update requested due to chgange in " + "feature arc configuration"); + } +} + +static int +sort_driver_registrations (void *a0, void *a1) +{ + vnet_dev_driver_registration_t **r0 = a0; + vnet_dev_driver_registration_t **r1 = a1; + + if (r0[0]->priority > r1[0]->priority) + return -1; + else if (r0[0]->priority < r1[0]->priority) + return 1; + + return 0; +} + +static clib_error_t * +vnet_dev_main_init (vlib_main_t *vm) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + vnet_dev_driver_registration_t **drv = 0; + u32 temp_space_sz = 0; + + dm->device_index_by_id = hash_create_string (0, sizeof (uword)); + + for (vnet_dev_bus_registration_t *r = dm->bus_registrations; r; + r = r->next_registration) + { + vnet_dev_bus_t *bus; + pool_get_zero (dm->buses, bus); + bus->registration = r; + bus->index = bus - dm->buses; + bus->ops = r->ops; + if (!r->device_data_size || + r->device_data_size > STRUCT_SIZE_OF (vnet_dev_t, bus_data)) + return clib_error_return ( + 0, "bus device data for bus '%s' is too big not specified", r->name); + + log_debug (0, "bus '%s' registered", r->name); + } + + for (vnet_dev_driver_registration_t *r = dm->driver_registrations; r; + r = r->next_registration) + vec_add1 (drv, r); + + vec_sort_with_function (drv, sort_driver_registrations); + + vec_foreach_pointer (r, drv) + { + vnet_dev_driver_t *driver; + vnet_dev_bus_t *bus; + vnet_device_class_t *dev_class; + int bus_index = -1; + + pool_foreach (bus, dm->buses) + { + if (strcmp (bus->registration->name, r->bus) == 0) + { + bus_index = bus->index; + break; + } + } + + if (bus_index < 0) + return clib_error_return (0, "unknown bus '%s'", r->bus); + + pool_get_zero (dm->drivers, driver); + driver->registration = r; + driver->index = driver - dm->drivers; + driver->bus_index = bus_index; + driver->ops = r->ops; + dev_class = clib_mem_alloc (sizeof (vnet_device_class_t)); + *dev_class = (vnet_device_class_t){ + .name = r->name, + .format_device_name = format_vnet_dev_interface_name, + .format_device = format_vnet_dev_interface_info, + .admin_up_down_function = vnet_dev_admin_up_down_fn, + .rx_redirect_to_node = vnet_dev_set_interface_next_node, + .clear_counters = vnet_dev_clear_hw_interface_counters, + .rx_mode_change_function = vnet_dev_rx_mode_change_fn, + .mac_addr_change_function = vnet_dev_port_mac_change, + .mac_addr_add_del_function = vnet_dev_add_del_mac_address, + .flow_ops_function = vnet_dev_flow_ops_fn, + .set_rss_queues_function = vnet_dev_interface_set_rss_queues, + }; + driver->dev_class_index = vnet_register_device_class (vm, dev_class); + log_debug (0, "driver '%s' registered on bus '%s'", r->name, + bus->registration->name); + + if (temp_space_sz < r->runtime_temp_space_sz) + temp_space_sz = r->runtime_temp_space_sz; + } + + if (dm->startup_config) + log_debug (0, "startup config: %v", dm->startup_config); + + vec_free (drv); + + if (temp_space_sz > 0) + { + const u32 align = CLIB_CACHE_LINE_BYTES; + u32 sz = round_pow2 (temp_space_sz, align); + dm->log2_runtime_temp_space_sz = + get_lowest_set_bit_index (max_pow2 (sz)); + sz = 1 << dm->log2_runtime_temp_space_sz; + sz *= vlib_get_n_threads (); + dm->runtime_temp_spaces = clib_mem_alloc_aligned (sz, align); + clib_memset (dm->runtime_temp_spaces, 0, sz); + log_debug (0, + "requested %u bytes for runtime temp storage, allocated %u " + "per thread (total %u)", + temp_space_sz, 1 << dm->log2_runtime_temp_space_sz, sz); + } + + vnet_feature_register (vnet_dev_feature_update_cb, 0); + + return 0; +} + +VLIB_INIT_FUNCTION (vnet_dev_main_init); + +clib_error_t * +vnet_dev_num_workers_change (vlib_main_t *vm) +{ + vnet_dev_main_t *dm = &vnet_dev_main; + + if (dm->log2_runtime_temp_space_sz > 0) + { + const u32 align = CLIB_CACHE_LINE_BYTES; + uword sz = + (1ULL << dm->log2_runtime_temp_space_sz) * vlib_get_n_threads (); + if (dm->runtime_temp_spaces) + clib_mem_free (dm->runtime_temp_spaces); + dm->runtime_temp_spaces = clib_mem_alloc_aligned (sz, align); + clib_memset (dm->runtime_temp_spaces, 0, sz); + log_debug (0, "runtime temp storage resized to %u", sz); + } + + return 0; +} + +VLIB_NUM_WORKERS_CHANGE_FN (vnet_dev_num_workers_change); |