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authorLong Li <longli@microsoft.com>2019-05-13 21:01:29 -0700
committerSteve French <stfrench@microsoft.com>2019-05-14 16:57:43 -0500
commit7f46d23e1b14f0827eb19c60eedcc6525ca2e742 (patch)
tree94e0a9cfd587ec331066340be7d02830bfd5ab60 /fs/cifs
parent1d2a4f57cebdab1d496b976a1e6ea998dc9b03c8 (diff)
downloadlinux-7f46d23e1b14f0827eb19c60eedcc6525ca2e742.tar.bz2
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: Long Li <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smbdirect.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index 251ef1223206..caac37b1de8c 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -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;