ips: sg chaining support
ips properly uses scsi_for_each_sg for the normal I/O path, however, the breakup path doesn't. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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55c16a7004
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e0eaf88828
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@ -3252,7 +3252,7 @@ ips_done(ips_ha_t * ha, ips_scb_t * scb)
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*/
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if ((scb->breakup) || (scb->sg_break)) {
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struct scatterlist *sg;
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int sg_dma_index, ips_sg_index = 0;
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int i, sg_dma_index, ips_sg_index = 0;
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/* we had a data breakup */
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scb->data_len = 0;
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@ -3261,20 +3261,22 @@ ips_done(ips_ha_t * ha, ips_scb_t * scb)
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/* Spin forward to last dma chunk */
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sg_dma_index = scb->breakup;
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for (i = 0; i < scb->breakup; i++)
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sg = sg_next(sg);
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/* Take care of possible partial on last chunk */
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ips_fill_scb_sg_single(ha,
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sg_dma_address(&sg[sg_dma_index]),
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sg_dma_address(sg),
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scb, ips_sg_index++,
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sg_dma_len(&sg[sg_dma_index]));
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sg_dma_len(sg));
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for (; sg_dma_index < scsi_sg_count(scb->scsi_cmd);
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sg_dma_index++) {
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sg_dma_index++, sg = sg_next(sg)) {
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if (ips_fill_scb_sg_single
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(ha,
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sg_dma_address(&sg[sg_dma_index]),
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sg_dma_address(sg),
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scb, ips_sg_index++,
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sg_dma_len(&sg[sg_dma_index])) < 0)
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sg_dma_len(sg)) < 0)
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break;
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}
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