mirror of https://github.com/F-Stack/f-stack.git
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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