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/*-
* 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_ */
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