04e8ec7419
There were defines which originally allowed sharing of some code with the enic kernel driver. The code has long since diverged and now the abstraction just makes the code harder to read. Mostly mechanical replacement of defines and reformatting. Signed-off-by: John Daley <johndale@cisco.com> Reviewed-by: Hyong Youb Kim <hyonkim@cisco.com>
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#ifndef _VNIC_RQ_H_
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#define _VNIC_RQ_H_
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#include <stdbool.h>
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#include "vnic_dev.h"
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#include "vnic_cq.h"
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/* Receive queue control */
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struct vnic_rq_ctrl {
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uint64_t ring_base; /* 0x00 */
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uint32_t ring_size; /* 0x08 */
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uint32_t pad0;
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uint32_t posted_index; /* 0x10 */
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uint32_t pad1;
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uint32_t cq_index; /* 0x18 */
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uint32_t pad2;
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uint32_t enable; /* 0x20 */
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uint32_t pad3;
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uint32_t running; /* 0x28 */
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uint32_t pad4;
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uint32_t fetch_index; /* 0x30 */
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uint32_t pad5;
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uint32_t error_interrupt_enable; /* 0x38 */
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uint32_t pad6;
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uint32_t error_interrupt_offset; /* 0x40 */
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uint32_t pad7;
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uint32_t error_status; /* 0x48 */
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uint32_t pad8;
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uint32_t tcp_sn; /* 0x50 */
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uint32_t pad9;
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uint32_t unused; /* 0x58 */
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uint32_t pad10;
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uint32_t dca_select; /* 0x60 */
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uint32_t pad11;
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uint32_t dca_value; /* 0x68 */
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uint32_t pad12;
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uint32_t data_ring; /* 0x70 */
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uint32_t pad13;
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uint32_t header_split; /* 0x78 */
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uint32_t pad14;
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};
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struct vnic_rq {
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unsigned int index;
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unsigned int posted_index;
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struct vnic_dev *vdev;
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struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */
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struct vnic_dev_ring ring;
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struct rte_mbuf **free_mbufs; /* reserve of free mbufs */
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int num_free_mbufs;
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struct rte_mbuf **mbuf_ring; /* array of allocated mbufs */
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unsigned int mbuf_next_idx; /* next mb to consume */
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void *os_buf_head;
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unsigned int pkts_outstanding;
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uint16_t rx_nb_hold;
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uint16_t rx_free_thresh;
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unsigned int socket_id;
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struct rte_mempool *mp;
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uint16_t rxst_idx;
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uint32_t tot_pkts;
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uint16_t data_queue_idx;
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uint8_t data_queue_enable;
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uint8_t is_sop;
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uint8_t in_use;
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struct rte_mbuf *pkt_first_seg;
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struct rte_mbuf *pkt_last_seg;
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unsigned int max_mbufs_per_pkt;
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uint16_t tot_nb_desc;
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bool need_initial_post;
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};
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static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
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{
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/* how many does SW own? */
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return rq->ring.desc_avail;
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}
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static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq)
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{
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/* how many does HW own? */
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return rq->ring.desc_count - rq->ring.desc_avail - 1;
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}
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enum desc_return_options {
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VNIC_RQ_RETURN_DESC,
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VNIC_RQ_DEFER_RETURN_DESC,
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};
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static inline int vnic_rq_fill(struct vnic_rq *rq,
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int (*buf_fill)(struct vnic_rq *rq))
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{
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int err;
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while (vnic_rq_desc_avail(rq) > 0) {
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err = (*buf_fill)(rq);
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if (err)
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return err;
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}
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return 0;
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}
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static inline int vnic_rq_fill_count(struct vnic_rq *rq,
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int (*buf_fill)(struct vnic_rq *rq), unsigned int count)
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{
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int err;
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while ((vnic_rq_desc_avail(rq) > 0) && (count--)) {
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err = (*buf_fill)(rq);
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if (err)
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return err;
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}
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return 0;
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}
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void vnic_rq_free(struct vnic_rq *rq);
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int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
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unsigned int desc_count, unsigned int desc_size);
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void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,
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unsigned int fetch_index, unsigned int posted_index,
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unsigned int error_interrupt_enable,
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unsigned int error_interrupt_offset);
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void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
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unsigned int error_interrupt_enable,
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unsigned int error_interrupt_offset);
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void vnic_rq_error_out(struct vnic_rq *rq, unsigned int error);
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unsigned int vnic_rq_error_status(struct vnic_rq *rq);
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void vnic_rq_enable(struct vnic_rq *rq);
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int vnic_rq_disable(struct vnic_rq *rq);
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void vnic_rq_clean(struct vnic_rq *rq,
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void (*buf_clean)(struct rte_mbuf **buf));
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#endif /* _VNIC_RQ_H_ */
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