-/*
- * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
- *
- * Copyright (c) 2014, Cisco Systems, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. 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.
- *
- * 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 HOLDER 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.
- *
*/
-#ident "$Id: vnic_rq.c 171146 2014-05-02 07:08:20Z ssujith $"
#include "vnic_dev.h"
#include "vnic_rq.h"
-static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
-{
- struct vnic_rq_buf *buf;
- unsigned int i, j, count = rq->ring.desc_count;
- unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count);
-
- for (i = 0; i < blks; i++) {
- rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC);
- if (!rq->bufs[i])
- return -ENOMEM;
- }
-
- for (i = 0; i < blks; i++) {
- buf = rq->bufs[i];
- for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES(count); j++) {
- buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES(count) + j;
- buf->desc = (u8 *)rq->ring.descs +
- rq->ring.desc_size * buf->index;
- if (buf->index + 1 == count) {
- buf->next = rq->bufs[0];
- break;
- } else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES(count)) {
- buf->next = rq->bufs[i + 1];
- } else {
- buf->next = buf + 1;
- buf++;
- }
- }
- }
-
- rq->to_use = rq->to_clean = rq->bufs[0];
-
- return 0;
-}
-
-int vnic_rq_mem_size(struct vnic_rq *rq, unsigned int desc_count,
- unsigned int desc_size)
-{
- int mem_size = 0;
-
- mem_size += vnic_dev_desc_ring_size(&rq->ring, desc_count, desc_size);
-
- mem_size += VNIC_RQ_BUF_BLKS_NEEDED(rq->ring.desc_count) *
- VNIC_RQ_BUF_BLK_SZ(rq->ring.desc_count);
-
- return mem_size;
-}
-
void vnic_rq_free(struct vnic_rq *rq)
{
struct vnic_dev *vdev;
- unsigned int i;
vdev = rq->vdev;
vnic_dev_free_desc_ring(vdev, &rq->ring);
- for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) {
- if (rq->bufs[i]) {
- kfree(rq->bufs[i]);
- rq->bufs[i] = NULL;
- }
- }
-
rq->ctrl = NULL;
}
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
- int err;
+ int rc;
char res_name[NAME_MAX];
static int instance;
rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
if (!rq->ctrl) {
- pr_err("Failed to hook RQ[%d] resource\n", index);
+ pr_err("Failed to hook RQ[%u] resource\n", index);
return -EINVAL;
}
vnic_rq_disable(rq);
- snprintf(res_name, sizeof(res_name), "%d-rq-%d", instance++, index);
- err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size,
+ snprintf(res_name, sizeof(res_name), "%d-rq-%u", instance++, index);
+ rc = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size,
rq->socket_id, res_name);
- if (err)
- return err;
-
- err = vnic_rq_alloc_bufs(rq);
- if (err) {
- vnic_rq_free(rq);
- return err;
- }
-
- return 0;
+ return rc;
}
void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,
iowrite32(cq_index, &rq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
- iowrite32(0, &rq->ctrl->dropped_packet_count);
iowrite32(0, &rq->ctrl->error_status);
iowrite32(fetch_index, &rq->ctrl->fetch_index);
iowrite32(posted_index, &rq->ctrl->posted_index);
-
- rq->to_use = rq->to_clean =
- &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]
- [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)];
+ if (rq->data_queue_enable)
+ iowrite32(((1 << 10) | rq->data_queue_idx),
+ &rq->ctrl->data_ring);
+ else
+ iowrite32(0, &rq->ctrl->data_ring);
}
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_offset)
{
u32 fetch_index = 0;
+
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
fetch_index, fetch_index,
error_interrupt_enable,
error_interrupt_offset);
-}
-
-void vnic_rq_error_out(struct vnic_rq *rq, unsigned int error)
-{
- iowrite32(error, &rq->ctrl->error_status);
+ rq->rxst_idx = 0;
+ rq->tot_pkts = 0;
+ rq->pkt_first_seg = NULL;
+ rq->pkt_last_seg = NULL;
}
unsigned int vnic_rq_error_status(struct vnic_rq *rq)
}
void vnic_rq_clean(struct vnic_rq *rq,
- void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
+ void (*buf_clean)(struct rte_mbuf **buf))
{
- struct vnic_rq_buf *buf;
- u32 fetch_index;
+ struct rte_mbuf **buf;
+ u32 fetch_index, i;
unsigned int count = rq->ring.desc_count;
- buf = rq->to_clean;
+ buf = &rq->mbuf_ring[0];
- while (vnic_rq_desc_used(rq) > 0) {
-
- (*buf_clean)(rq, buf);
-
- buf = rq->to_clean = buf->next;
- rq->ring.desc_avail++;
+ for (i = 0; i < count; i++) {
+ (*buf_clean)(buf);
+ buf++;
}
+ rq->ring.desc_avail = count - 1;
+ rq->rx_nb_hold = 0;
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
/* Hardware surprise removal: reset fetch_index */
fetch_index = 0;
}
- rq->to_use = rq->to_clean =
- &rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]
- [fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)];
+
iowrite32(fetch_index, &rq->ctrl->posted_index);
vnic_dev_clear_desc_ring(&rq->ring);
git.droids-corp.org / dpdk.git / blobdiff