Commit 7f46d23e authored by Long Li's avatar Long Li Committed by Steve French
Browse files

cifs:smbd Use the correct DMA direction when sending data 



When sending data, use the DMA_TO_DEVICE to map buffers. Also log the number
of requests in a compounding request from upper layer.

Signed-off-by: default avatarLong Li <longli@microsoft.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
Acked-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
Acked-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
parent 1d2a4f57

fs/cifs/smbdirect.c

+5 −3
Original line number Diff line number Diff line
@@ -903,7 +903,7 @@ static int smbd_create_header(struct smbd_connection *info, 
	request->sge[0].addr = ib_dma_map_single(info->id->device,

						 (void *)packet,

						 header_length,

						 DMA_BIDIRECTIONAL);

						 DMA_TO_DEVICE);

	if (ib_dma_mapping_error(info->id->device, request->sge[0].addr)) {

		mempool_free(request, info->request_mempool);

		rc = -EIO;
@@ -1005,7 +1005,7 @@ static int smbd_post_send_sgl(struct smbd_connection *info, 
	for_each_sg(sgl, sg, num_sgs, i) {

		request->sge[i+1].addr =

			ib_dma_map_page(info->id->device, sg_page(sg),

			       sg->offset, sg->length, DMA_BIDIRECTIONAL);

			       sg->offset, sg->length, DMA_TO_DEVICE);

		if (ib_dma_mapping_error(

				info->id->device, request->sge[i+1].addr)) {

			rc = -EIO;
@@ -2110,8 +2110,10 @@ int smbd_send(struct TCP_Server_Info *server, 
		goto done;

	}



	rqst_idx = 0;

	log_write(INFO, "num_rqst=%d total length=%u\n",

			num_rqst, remaining_data_length);



	rqst_idx = 0;

next_rqst:

	rqst = &rqst_array[rqst_idx];

	iov = rqst->rq_iov;

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