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isert: Make sure we do dma_unmap on RDMA memory upon flushes

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Signed-off-by: Yan Burman <yanb@mellanox.com>

git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/iser@5838 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Yan Burman
2014-10-13 12:32:41 +00:00
parent 4a8e4c0af9
commit 2277551e22
1 changed files with 14 additions and 0 deletions
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14
iscsi-scst/kernel/isert-scst/iser_rdma.c
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@@ -521,6 +521,9 @@ static void isert_handle_wc_error(struct ib_wc *wc)
struct isert_wr *wr = _u64_to_ptr(wc->wr_id);
struct isert_cmnd *isert_pdu = wr->pdu;
struct isert_connection *isert_conn = wr->conn;
struct isert_buf *isert_buf = wr->buf;
struct isert_device *isert_dev = wr->isert_dev;
struct ib_device *ib_dev = isert_dev->ib_dev;
TRACE_ENTRY();
@@ -537,11 +540,22 @@ static void isert_handle_wc_error(struct ib_wc *wc)
isert_pdu_err(&isert_pdu->iscsi);
break;
case ISER_WR_RDMA_READ:
if (isert_buf->sg_cnt != 0) {
isert_buf->sg_cnt = 0;
ib_dma_unmap_sg(ib_dev, isert_buf->sg, isert_buf->sg_cnt,
isert_buf->dma_dir);
}
isert_pdu_err(&isert_pdu->iscsi);
break;
case ISER_WR_RECV:
/* this should be the Flush, no task has been created yet */
break;
case ISER_WR_RDMA_WRITE:
if (isert_buf->sg_cnt != 0) {
isert_buf->sg_cnt = 0;
ib_dma_unmap_sg(ib_dev, isert_buf->sg, isert_buf->sg_cnt,
isert_buf->dma_dir);
}
/* RDMA-WR and SEND response of a READ task
are sent together, so when receiving RDMA-WR error,
wait until SEND error arrives to complete the task */