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5df6d737dd
fnic is a driver for the Cisco PCI-Express FCoE HBA Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
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* Copyright 2008 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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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _VNIC_CQ_COPY_H_
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#define _VNIC_CQ_COPY_H_
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#include "fcpio.h"
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static inline unsigned int vnic_cq_copy_service(
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struct vnic_cq *cq,
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int (*q_service)(struct vnic_dev *vdev,
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unsigned int index,
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struct fcpio_fw_req *desc),
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unsigned int work_to_do)
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{
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struct fcpio_fw_req *desc;
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unsigned int work_done = 0;
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u8 color;
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desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
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cq->ring.desc_size * cq->to_clean);
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fcpio_color_dec(desc, &color);
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while (color != cq->last_color) {
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if ((*q_service)(cq->vdev, cq->index, desc))
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break;
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cq->to_clean++;
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if (cq->to_clean == cq->ring.desc_count) {
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cq->to_clean = 0;
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cq->last_color = cq->last_color ? 0 : 1;
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}
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desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
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cq->ring.desc_size * cq->to_clean);
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fcpio_color_dec(desc, &color);
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work_done++;
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if (work_done >= work_to_do)
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break;
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}
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return work_done;
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}
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#endif /* _VNIC_CQ_COPY_H_ */
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