VLIB_REGISTER_NODE (device_input_node) = {
.function = device_input_fn,
.name = "device-input",
+ .runtime_data_bytes = sizeof (vnet_device_input_runtime_t),
.type = VLIB_NODE_TYPE_INPUT,
.state = VLIB_NODE_STATE_DISABLED,
.n_next_nodes = VNET_DEVICE_INPUT_N_NEXT_NODES,
[VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = sizeof (ethernet_header_t),
};
+const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
+device_input_next_node_flags[((VNET_DEVICE_INPUT_N_NEXT_NODES /
+ CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
+{
+ [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
+ [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
+ [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
+ [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = VNET_BUFFER_F_L3_HDR_OFFSET_VALID,
+};
+
VNET_FEATURE_ARC_INIT (device_input, static) =
{
.arc_name = "device-input",
.start_nodes = VNET_FEATURES ("device-input"),
+ .last_in_arc = "ethernet-input",
.arc_index_ptr = &feature_main.device_input_feature_arc_index,
};
.runs_before = VNET_FEATURES ("ethernet-input"),
};
+VNET_FEATURE_INIT (p2p_ethernet_node, static) = {
+ .arc_name = "device-input",
+ .node_name = "p2p-ethernet-input",
+ .runs_before = VNET_FEATURES ("ethernet-input"),
+};
+
VNET_FEATURE_INIT (ethernet_input, static) = {
.arc_name = "device-input",
.node_name = "ethernet-input",
};
/* *INDENT-ON* */
+static int
+vnet_device_queue_sort (void *a1, void *a2)
+{
+ vnet_device_and_queue_t *dq1 = a1;
+ vnet_device_and_queue_t *dq2 = a2;
+
+ if (dq1->dev_instance > dq2->dev_instance)
+ return 1;
+ else if (dq1->dev_instance < dq2->dev_instance)
+ return -1;
+ else if (dq1->queue_id > dq2->queue_id)
+ return 1;
+ else if (dq1->queue_id < dq2->queue_id)
+ return -1;
+ else
+ return 0;
+}
+
+static void
+vnet_device_queue_update (vnet_main_t * vnm, vnet_device_input_runtime_t * rt)
+{
+ vnet_device_and_queue_t *dq;
+ vnet_hw_interface_t *hw;
+
+ vec_sort_with_function (rt->devices_and_queues, vnet_device_queue_sort);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ {
+ hw = vnet_get_hw_interface (vnm, dq->hw_if_index);
+ vec_validate (hw->dq_runtime_index_by_queue, dq->queue_id);
+ hw->dq_runtime_index_by_queue[dq->queue_id] = dq - rt->devices_and_queues;
+ }
+}
+
+void
+vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, uword thread_index)
+{
+ vnet_device_main_t *vdm = &vnet_device_main;
+ vlib_main_t *vm, *vm0;
+ vnet_device_input_runtime_t *rt;
+ vnet_device_and_queue_t *dq;
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+
+ ASSERT (hw->input_node_index > 0);
+
+ if (vdm->first_worker_thread_index == 0)
+ thread_index = 0;
+
+ if (thread_index != 0 &&
+ (thread_index < vdm->first_worker_thread_index ||
+ thread_index > vdm->last_worker_thread_index))
+ {
+ thread_index = vdm->next_worker_thread_index++;
+ if (vdm->next_worker_thread_index > vdm->last_worker_thread_index)
+ vdm->next_worker_thread_index = vdm->first_worker_thread_index;
+ }
+
+ vm = vlib_mains[thread_index];
+ vm0 = vlib_get_main ();
+
+ vlib_worker_thread_barrier_sync (vm0);
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_add2 (rt->devices_and_queues, dq, 1);
+ dq->hw_if_index = hw_if_index;
+ dq->dev_instance = hw->dev_instance;
+ dq->queue_id = queue_id;
+ dq->mode = VNET_HW_INTERFACE_RX_MODE_POLLING;
+ rt->enabled_node_state = VLIB_NODE_STATE_POLLING;
+
+ vnet_device_queue_update (vnm, rt);
+ vec_validate (hw->input_node_thread_index_by_queue, queue_id);
+ vec_validate (hw->rx_mode_by_queue, queue_id);
+ hw->input_node_thread_index_by_queue[queue_id] = thread_index;
+ hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_POLLING;
+
+ vlib_worker_thread_barrier_release (vm0);
+
+ vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
+}
+
+int
+vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id)
+{
+ vlib_main_t *vm, *vm0;
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_device_input_runtime_t *rt;
+ vnet_device_and_queue_t *dq;
+ uword old_thread_index;
+ vnet_hw_interface_rx_mode mode;
+
+ if (hw->input_node_thread_index_by_queue == 0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ if (vec_len (hw->input_node_thread_index_by_queue) < queue_id + 1)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ old_thread_index = hw->input_node_thread_index_by_queue[queue_id];
+
+ vm = vlib_mains[old_thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
+ {
+ mode = dq->mode;
+ goto delete;
+ }
+
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+delete:
+
+ vm0 = vlib_get_main ();
+ vlib_worker_thread_barrier_sync (vm0);
+ vec_del1 (rt->devices_and_queues, dq - rt->devices_and_queues);
+ vnet_device_queue_update (vnm, rt);
+ hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_UNKNOWN;
+ vlib_worker_thread_barrier_release (vm0);
+
+ if (vec_len (rt->devices_and_queues) == 0)
+ vlib_node_set_state (vm, hw->input_node_index, VLIB_NODE_STATE_DISABLED);
+ else if (mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
+ {
+ /*
+ * if the deleted interface is polling, we may need to set the node state
+ * to interrupt if there is no more polling interface for this device's
+ * corresponding thread. This is because mixed interfaces
+ * (polling and interrupt), assigned to the same thread, set the
+ * thread to polling prior to the deletion.
+ */
+ vec_foreach (dq, rt->devices_and_queues)
+ {
+ if (dq->mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
+ return 0;
+ }
+ rt->enabled_node_state = VLIB_NODE_STATE_INTERRUPT;
+ vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
+ }
+
+ return 0;
+}
+
+
+int
+vnet_hw_interface_set_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, vnet_hw_interface_rx_mode mode)
+{
+ vlib_main_t *vm;
+ uword thread_index;
+ vnet_device_and_queue_t *dq;
+ vlib_node_state_t enabled_node_state;
+ ASSERT (mode < VNET_HW_INTERFACE_NUM_RX_MODES);
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_device_input_runtime_t *rt;
+ int is_polling = 0;
+
+ if (mode == VNET_HW_INTERFACE_RX_MODE_DEFAULT)
+ mode = hw->default_rx_mode;
+
+ if (hw->input_node_thread_index_by_queue == 0 || hw->rx_mode_by_queue == 0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ if (hw->rx_mode_by_queue[queue_id] == mode)
+ return 0;
+
+ if (mode != VNET_HW_INTERFACE_RX_MODE_POLLING &&
+ (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE) == 0)
+ return VNET_API_ERROR_UNSUPPORTED;
+
+ if ((vec_len (hw->input_node_thread_index_by_queue) < queue_id + 1) ||
+ (vec_len (hw->rx_mode_by_queue) < queue_id + 1))
+ return VNET_API_ERROR_INVALID_QUEUE;
+
+ hw->rx_mode_by_queue[queue_id] = mode;
+ thread_index = hw->input_node_thread_index_by_queue[queue_id];
+ vm = vlib_mains[thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ {
+ if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
+ dq->mode = mode;
+ if (dq->mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
+ is_polling = 1;
+ }
+
+ if (is_polling)
+ enabled_node_state = VLIB_NODE_STATE_POLLING;
+ else
+ enabled_node_state = VLIB_NODE_STATE_INTERRUPT;
+
+ if (rt->enabled_node_state != enabled_node_state)
+ {
+ rt->enabled_node_state = enabled_node_state;
+ if (vlib_node_get_state (vm, hw->input_node_index) !=
+ VLIB_NODE_STATE_DISABLED)
+ vlib_node_set_state (vm, hw->input_node_index, enabled_node_state);
+ }
+
+ return 0;
+}
+
+int
+vnet_hw_interface_get_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, vnet_hw_interface_rx_mode * mode)
+{
+ vlib_main_t *vm;
+ uword thread_index;
+ vnet_device_and_queue_t *dq;
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_device_input_runtime_t *rt;
+
+ if (hw->input_node_thread_index_by_queue == 0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ if ((vec_len (hw->input_node_thread_index_by_queue) < queue_id + 1) ||
+ (vec_len (hw->rx_mode_by_queue) < queue_id + 1))
+ return VNET_API_ERROR_INVALID_QUEUE;
+
+ thread_index = hw->input_node_thread_index_by_queue[queue_id];
+ vm = vlib_mains[thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
+ {
+ *mode = dq->mode;
+ return 0;
+ }
+
+ return VNET_API_ERROR_INVALID_INTERFACE;
+}
+
+
+
static clib_error_t *
vnet_device_init (vlib_main_t * vm)
{
vnet_device_main_t *vdm = &vnet_device_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
+ vlib_thread_registration_t *tr;
+ uword *p;
vec_validate_aligned (vdm->workers, tm->n_vlib_mains - 1,
CLIB_CACHE_LINE_BYTES);
+
+ p = hash_get_mem (tm->thread_registrations_by_name, "workers");
+ tr = p ? (vlib_thread_registration_t *) p[0] : 0;
+ if (tr && tr->count > 0)
+ {
+ vdm->first_worker_thread_index = tr->first_index;
+ vdm->next_worker_thread_index = tr->first_index;
+ vdm->last_worker_thread_index = tr->first_index + tr->count - 1;
+ }
return 0;
}
VLIB_INIT_FUNCTION (vnet_device_init);
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff