drivers/net/vmxnet3/vmxnet3_ring.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #ifndef _VMXNET3_RING_H_
   6 #define _VMXNET3_RING_H_
   7
   8 #define VMXNET3_RX_CMDRING_SIZE 2
   9
  10 #define VMXNET3_DRIVER_VERSION_NUM 0x01012000
  11
  12 /* Default ring size */
  13 #define VMXNET3_DEF_TX_RING_SIZE 512
  14 #define VMXNET3_DEF_RX_RING_SIZE 128
  15
  16 /* Default rx data ring desc size */
  17 #define VMXNET3_DEF_RXDATA_DESC_SIZE 256
  18
  19 #define VMXNET3_SUCCESS 0
  20 #define VMXNET3_FAIL   -1
  21
  22 #define TRUE  1
  23 #define FALSE 0
  24
  25
  26 typedef struct vmxnet3_buf_info {
  27         uint16_t               len;
  28         struct rte_mbuf        *m;
  29         uint64_t               bufPA;
  30 } vmxnet3_buf_info_t;
  31
  32 typedef struct vmxnet3_cmd_ring {
  33         vmxnet3_buf_info_t     *buf_info;
  34         uint32_t               size;
  35         uint32_t               next2fill;
  36         uint32_t               next2comp;
  37         uint8_t                gen;
  38         uint8_t                rid;
  39         Vmxnet3_GenericDesc    *base;
  40         uint64_t               basePA;
  41 } vmxnet3_cmd_ring_t;
  42
  43 static inline void
  44 vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
  45 {
  46         ring->next2fill++;
  47         if (unlikely(ring->next2fill == ring->size)) {
  48                 ring->next2fill = 0;
  49                 ring->gen = (uint8_t)(ring->gen ^ 1);
  50         }
  51 }
  52
  53 static inline void
  54 vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
  55 {
  56         VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
  57 }
  58
  59 static inline uint32_t
  60 vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
  61 {
  62         return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
  63                    ring->next2comp - ring->next2fill - 1;
  64 }
  65
  66 static inline bool
  67 vmxnet3_cmd_ring_desc_empty(struct vmxnet3_cmd_ring *ring)
  68 {
  69         return ring->next2comp == ring->next2fill;
  70 }
  71
  72 typedef struct vmxnet3_comp_ring {
  73         uint32_t               size;
  74         uint32_t               next2proc;
  75         uint8_t                gen;
  76         uint8_t                intr_idx;
  77         Vmxnet3_GenericDesc    *base;
  78         uint64_t               basePA;
  79 } vmxnet3_comp_ring_t;
  80
  81 struct vmxnet3_data_ring {
  82         struct Vmxnet3_TxDataDesc *base;
  83         uint32_t                  size;
  84         uint64_t                  basePA;
  85 };
  86
  87 static inline void
  88 vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
  89 {
  90         ring->next2proc++;
  91         if (unlikely(ring->next2proc == ring->size)) {
  92                 ring->next2proc = 0;
  93                 ring->gen = (uint8_t)(ring->gen ^ 1);
  94         }
  95 }
  96
  97 struct vmxnet3_txq_stats {
  98         uint64_t        drop_total; /* # of pkts dropped by the driver,
  99                                      * the counters below track droppings due to
 100                                      * different reasons
 101                                      */
 102         uint64_t        drop_too_many_segs;
 103         uint64_t        drop_tso;
 104         uint64_t        tx_ring_full;
 105 };
 106
 107 typedef struct vmxnet3_tx_queue {
 108         struct vmxnet3_hw            *hw;
 109         struct vmxnet3_cmd_ring      cmd_ring;
 110         struct vmxnet3_comp_ring     comp_ring;
 111         struct vmxnet3_data_ring     data_ring;
 112         uint32_t                     qid;
 113         struct Vmxnet3_TxQueueDesc   *shared;
 114         struct vmxnet3_txq_stats     stats;
 115         const struct rte_memzone     *mz;
 116         bool                         stopped;
 117         uint16_t                     queue_id;      /**< Device TX queue index. */
 118         uint16_t                     port_id;       /**< Device port identifier. */
 119         uint16_t                     txdata_desc_size;
 120 } vmxnet3_tx_queue_t;
 121
 122 struct vmxnet3_rxq_stats {
 123         uint64_t                     drop_total;
 124         uint64_t                     drop_err;
 125         uint64_t                     drop_fcs;
 126         uint64_t                     rx_buf_alloc_failure;
 127 };
 128
 129 struct vmxnet3_rx_data_ring {
 130         uint8_t  *base;
 131         uint64_t basePA;
 132         uint32_t size;
 133 };
 134
 135 typedef struct vmxnet3_rx_queue {
 136         struct rte_mempool          *mp;
 137         struct vmxnet3_hw           *hw;
 138         struct vmxnet3_cmd_ring     cmd_ring[VMXNET3_RX_CMDRING_SIZE];
 139         struct vmxnet3_comp_ring    comp_ring;
 140         struct vmxnet3_rx_data_ring data_ring;
 141         uint16_t                    data_desc_size;
 142         uint32_t                    qid1;
 143         uint32_t                    qid2;
 144         /* rqID in RCD for buffer from data ring */
 145         uint32_t                    data_ring_qid;
 146         Vmxnet3_RxQueueDesc         *shared;
 147         struct rte_mbuf             *start_seg;
 148         struct rte_mbuf             *last_seg;
 149         struct vmxnet3_rxq_stats    stats;
 150         const struct rte_memzone    *mz;
 151         bool                        stopped;
 152         uint16_t                    queue_id;      /**< Device RX queue index. */
 153         uint16_t                    port_id;       /**< Device port identifier. */
 154 } vmxnet3_rx_queue_t;
 155
 156 #endif /* _VMXNET3_RING_H_ */