diff options
Diffstat (limited to 'drivers/net/vmxnet3/vmxnet3_ring.h')
| -rw-r--r-- | drivers/net/vmxnet3/vmxnet3_ring.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_ring.h b/drivers/net/vmxnet3/vmxnet3_ring.h new file mode 100644 index 00000000..69ff2ded --- /dev/null +++ b/drivers/net/vmxnet3/vmxnet3_ring.h @@ -0,0 +1,169 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _VMXNET3_RING_H_ +#define _VMXNET3_RING_H_ + +#define VMXNET3_RX_CMDRING_SIZE 2 + +#define VMXNET3_DRIVER_VERSION_NUM 0x01012000 + +/* Default ring size */ +#define VMXNET3_DEF_TX_RING_SIZE 512 +#define VMXNET3_DEF_RX_RING_SIZE 128 + +#define VMXNET3_SUCCESS 0 +#define VMXNET3_FAIL -1 + +#define TRUE 1 +#define FALSE 0 + + +typedef struct vmxnet3_buf_info { + uint16_t len; + struct rte_mbuf *m; + uint64_t bufPA; +} vmxnet3_buf_info_t; + +typedef struct vmxnet3_cmd_ring { + vmxnet3_buf_info_t *buf_info; + uint32_t size; + uint32_t next2fill; + uint32_t next2comp; + uint8_t gen; + uint8_t rid; + Vmxnet3_GenericDesc *base; + uint64_t basePA; +} vmxnet3_cmd_ring_t; + +static inline void +vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring) +{ + ring->next2fill++; + if (unlikely(ring->next2fill == ring->size)) { + ring->next2fill = 0; + ring->gen = (uint8_t)(ring->gen ^ 1); + } +} + +static inline void +vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring) +{ + VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size); +} + +static inline uint32_t +vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring) +{ + return (ring->next2comp > ring->next2fill ? 0 : ring->size) + + ring->next2comp - ring->next2fill - 1; +} + +static inline bool +vmxnet3_cmd_ring_desc_empty(struct vmxnet3_cmd_ring *ring) +{ + return ring->next2comp == ring->next2fill; +} + +typedef struct vmxnet3_comp_ring { + uint32_t size; + uint32_t next2proc; + uint8_t gen; + uint8_t intr_idx; + Vmxnet3_GenericDesc *base; + uint64_t basePA; +} vmxnet3_comp_ring_t; + +struct vmxnet3_data_ring { + struct Vmxnet3_TxDataDesc *base; + uint32_t size; + uint64_t basePA; +}; + +static inline void +vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring) +{ + ring->next2proc++; + if (unlikely(ring->next2proc == ring->size)) { + ring->next2proc = 0; + ring->gen = (uint8_t)(ring->gen ^ 1); + } +} + +struct vmxnet3_txq_stats { + uint64_t drop_total; /* # of pkts dropped by the driver, + * the counters below track droppings due to + * different reasons + */ + uint64_t drop_too_many_segs; + uint64_t drop_tso; + uint64_t tx_ring_full; +}; + +typedef struct vmxnet3_tx_queue { + struct vmxnet3_hw *hw; + struct vmxnet3_cmd_ring cmd_ring; + struct vmxnet3_comp_ring comp_ring; + struct vmxnet3_data_ring data_ring; + uint32_t qid; + struct Vmxnet3_TxQueueDesc *shared; + struct vmxnet3_txq_stats stats; + bool stopped; + uint16_t queue_id; /**< Device TX queue index. */ + uint8_t port_id; /**< Device port identifier. */ +} vmxnet3_tx_queue_t; + +struct vmxnet3_rxq_stats { + uint64_t drop_total; + uint64_t drop_err; + uint64_t drop_fcs; + uint64_t rx_buf_alloc_failure; +}; + +typedef struct vmxnet3_rx_queue { + struct rte_mempool *mp; + struct vmxnet3_hw *hw; + struct vmxnet3_cmd_ring cmd_ring[VMXNET3_RX_CMDRING_SIZE]; + struct vmxnet3_comp_ring comp_ring; + uint32_t qid1; + uint32_t qid2; + Vmxnet3_RxQueueDesc *shared; + struct rte_mbuf *start_seg; + struct rte_mbuf *last_seg; + struct vmxnet3_rxq_stats stats; + bool stopped; + uint16_t queue_id; /**< Device RX queue index. */ + uint8_t port_id; /**< Device port identifier. */ +} vmxnet3_rx_queue_t; + +#endif /* _VMXNET3_RING_H_ */ |