/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef included_vnet_vnet_device_h #define included_vnet_vnet_device_h #include <vppinfra/pcap.h> #include <vnet/l3_types.h> typedef enum { VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT, VNET_DEVICE_INPUT_NEXT_IP4_INPUT, VNET_DEVICE_INPUT_NEXT_IP6_INPUT, VNET_DEVICE_INPUT_NEXT_MPLS_INPUT, VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT, VNET_DEVICE_INPUT_NEXT_DROP, VNET_DEVICE_INPUT_N_NEXT_NODES, } vnet_device_input_next_t; #define VNET_DEVICE_INPUT_NEXT_NODES { \ [VNET_DEVICE_INPUT_NEXT_DROP] = "error-drop", \ [VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT] = "ethernet-input", \ [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = "ip4-input-no-checksum", \ [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = "ip4-input", \ [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = "ip6-input", \ [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = "mpls-input", \ } typedef struct { CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); /* total input packet counter */ u64 aggregate_rx_packets; } vnet_device_per_worker_data_t; typedef struct { vnet_device_per_worker_data_t *workers; uword first_worker_thread_index; uword last_worker_thread_index; uword next_worker_thread_index; } vnet_device_main_t; typedef struct { u32 hw_if_index; u32 dev_instance; u16 queue_id; vnet_hw_if_rx_mode mode; u32 interrupt_pending; } vnet_device_and_queue_t; typedef struct { vnet_device_and_queue_t *devices_and_queues; vlib_node_state_t enabled_node_state; u32 pad; } vnet_device_input_runtime_t; extern vnet_device_main_t vnet_device_main; extern vlib_node_registration_t device_input_node; extern const u32 device_input_next_node_advance[]; extern const u32 device_input_next_node_flags[]; static inline void vnet_hw_interface_set_input_node (vnet_main_t * vnm, u32 hw_if_index, u32 node_index) { vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); hw->input_node_index = node_index; } void vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id, uword thread_index); int vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id); int vnet_hw_interface_set_rx_mode (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id, vnet_hw_if_rx_mode mode); int vnet_hw_interface_get_rx_mode (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id, vnet_hw_if_rx_mode * mode); static inline u64 vnet_get_aggregate_rx_packets (void) { vnet_device_main_t *vdm = &vnet_device_main; u64 sum = 0; vnet_device_per_worker_data_t *pwd; vec_foreach (pwd, vdm->workers) sum += pwd->aggregate_rx_packets; return sum; } static inline void vnet_device_increment_rx_packets (u32 thread_index, u64 count) { vnet_device_main_t *vdm = &vnet_device_main; vnet_device_per_worker_data_t *pwd; pwd = vec_elt_at_index (vdm->workers, thread_index); pwd->aggregate_rx_packets += count; } static_always_inline uword vnet_get_device_input_thread_index (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id) { vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); ASSERT (queue_id < vec_len (hw->input_node_thread_index_by_queue)); return hw->input_node_thread_index_by_queue[queue_id]; } static_always_inline void vnet_device_input_set_interrupt_pending (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id) { vlib_main_t *vm; vnet_hw_interface_t *hw; vnet_device_input_runtime_t *rt; vnet_device_and_queue_t *dq; uword idx; hw = vnet_get_hw_interface (vnm, hw_if_index); idx = vnet_get_device_input_thread_index (vnm, hw_if_index, queue_id); vm = vlib_mains[idx]; rt = vlib_node_get_runtime_data (vm, hw->input_node_index); idx = hw->dq_runtime_index_by_queue[queue_id]; dq = vec_elt_at_index (rt->devices_and_queues, idx); clib_atomic_store_rel_n (&(dq->interrupt_pending), 1); vlib_node_set_interrupt_pending (vm, hw->input_node_index); } /* * Acquire RMW Access * Paired with Release Store in vnet_device_input_set_interrupt_pending */ #define foreach_device_and_queue(var,vec) \ for (var = (vec); var < vec_end (vec); var++) \ if ((var->mode == VNET_HW_IF_RX_MODE_POLLING) \ || clib_atomic_swap_acq_n (&((var)->interrupt_pending), 0)) #endif /* included_vnet_vnet_device_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */