src/vnet/devices/devices.h

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef included_vnet_vnet_device_h
  17 #define included_vnet_vnet_device_h
  18
  19 #include <vnet/unix/pcap.h>
  20 #include <vnet/l3_types.h>
  21
  22 typedef enum
  23 {
  24   VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT,
  25   VNET_DEVICE_INPUT_NEXT_IP4_INPUT,
  26   VNET_DEVICE_INPUT_NEXT_IP6_INPUT,
  27   VNET_DEVICE_INPUT_NEXT_MPLS_INPUT,
  28   VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT,
  29   VNET_DEVICE_INPUT_NEXT_DROP,
  30   VNET_DEVICE_INPUT_N_NEXT_NODES,
  31 } vnet_device_input_next_t;
  32
  33 #define VNET_DEVICE_INPUT_NEXT_NODES {                                  \
  34     [VNET_DEVICE_INPUT_NEXT_DROP] = "error-drop",                       \
  35     [VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT] = "ethernet-input",         \
  36     [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = "ip4-input-no-checksum",   \
  37     [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = "ip4-input",                   \
  38     [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = "ip6-input",                   \
  39     [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = "mpls-input",                 \
  40 }
  41
  42 typedef struct
  43 {
  44   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  45
  46   /* total input packet counter */
  47   u64 aggregate_rx_packets;
  48 } vnet_device_per_worker_data_t;
  49
  50 typedef struct
  51 {
  52   vnet_device_per_worker_data_t *workers;
  53   uword first_worker_thread_index;
  54   uword last_worker_thread_index;
  55   uword next_worker_thread_index;
  56 } vnet_device_main_t;
  57
  58 typedef struct
  59 {
  60   u32 hw_if_index;
  61   u32 dev_instance;
  62   u16 queue_id;
  63 } vnet_device_and_queue_t;
  64
  65 typedef struct
  66 {
  67   vnet_device_and_queue_t *devices_and_queues;
  68 } vnet_device_input_runtime_t;
  69
  70 extern vnet_device_main_t vnet_device_main;
  71 extern vlib_node_registration_t device_input_node;
  72 extern const u32 device_input_next_node_advance[];
  73
  74 static inline void
  75 vnet_set_device_input_node (u32 hw_if_index, u32 node_index)
  76 {
  77   vnet_main_t *vnm = vnet_get_main ();
  78   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  79   hw->input_node_index = node_index;
  80 }
  81
  82 void vnet_device_input_assign_thread (u32 hw_if_index, u16 queue_id,
  83                                       uword thread_index);
  84
  85 static inline u64
  86 vnet_get_aggregate_rx_packets (void)
  87 {
  88   vnet_device_main_t *vdm = &vnet_device_main;
  89   u64 sum = 0;
  90   vnet_device_per_worker_data_t *pwd;
  91
  92   vec_foreach (pwd, vdm->workers) sum += pwd->aggregate_rx_packets;
  93
  94   return sum;
  95 }
  96
  97 static inline void
  98 vnet_device_increment_rx_packets (u32 thread_index, u64 count)
  99 {
 100   vnet_device_main_t *vdm = &vnet_device_main;
 101   vnet_device_per_worker_data_t *pwd;
 102
 103   pwd = vec_elt_at_index (vdm->workers, thread_index);
 104   pwd->aggregate_rx_packets += count;
 105 }
 106
 107 static_always_inline vnet_device_and_queue_t *
 108 vnet_get_device_and_queue (vlib_main_t * vm, vlib_node_runtime_t * node)
 109 {
 110   vnet_device_input_runtime_t *rt = (void *) node->runtime_data;
 111   return rt->devices_and_queues;
 112 }
 113
 114 static_always_inline void
 115 vnet_device_input_set_interrupt_pending (vnet_main_t * vnm, u32 hw_if_index,
 116                                          u16 queue_id)
 117 {
 118   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
 119
 120   ASSERT (queue_id < vec_len (hw->input_node_thread_index_by_queue));
 121   u32 thread_index = hw->input_node_thread_index_by_queue[queue_id];
 122   vlib_node_set_interrupt_pending (vlib_mains[thread_index],
 123                                    hw->input_node_index);
 124 }
 125
 126 #endif /* included_vnet_vnet_device_h */
 127
 128 /*
 129  * fd.io coding-style-patch-verification: ON
 130  *
 131  * Local Variables:
 132  * eval: (c-set-style "gnu")
 133  * End:
 134  */