diff options
| author | Long Li <longli@microsoft.com> | 2017-11-07 09:54:53 +0100 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2018-01-25 02:49:05 +0100 |
| commit | 2dabfd5baba641588b82ba499ef81c9a378bbb23 (patch) | |
| tree | 3e514328e1c23b366edb8a54df832812f10fd861 /fs/cifs | |
| parent | cifs: avoid a kmalloc in smb2_send_recv/SendReceive2 for the common case (diff) | |
| download | linux-2dabfd5baba641588b82ba499ef81c9a378bbb23.tar.xz linux-2dabfd5baba641588b82ba499ef81c9a378bbb23.zip | |
CIFS: SMBD: Add parameter rdata to smb2_new_read_req
This patch is for preparing upper layer for doing SMB read via RDMA write.
When we assemble the SMB read packet header, we need to know the I/O layout
if this request is to use a RDMA write. rdata has all the information we need
for memory registration. Add rdata to smb2_new_read_req.
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Ronnie Sahlberg <lsahlber.redhat.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 9f883f4db23d..c0dc0491af93 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2429,18 +2429,21 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, */ static int smb2_new_read_req(void **buf, unsigned int *total_len, - struct cifs_io_parms *io_parms, unsigned int remaining_bytes, - int request_type) + struct cifs_io_parms *io_parms, struct cifs_readdata *rdata, + unsigned int remaining_bytes, int request_type) { int rc = -EACCES; struct smb2_read_plain_req *req = NULL; struct smb2_sync_hdr *shdr; + struct TCP_Server_Info *server; rc = smb2_plain_req_init(SMB2_READ, io_parms->tcon, (void **) &req, total_len); if (rc) return rc; - if (io_parms->tcon->ses->server == NULL) + + server = io_parms->tcon->ses->server; + if (server == NULL) return -ECONNABORTED; shdr = &req->sync_hdr; @@ -2568,7 +2571,8 @@ smb2_async_readv(struct cifs_readdata *rdata) server = io_parms.tcon->ses->server; - rc = smb2_new_read_req((void **) &buf, &total_len, &io_parms, 0, 0); + rc = smb2_new_read_req( + (void **) &buf, &total_len, &io_parms, rdata, 0, 0); if (rc) { if (rc == -EAGAIN && rdata->credits) { /* credits was reset by reconnect */ @@ -2633,7 +2637,7 @@ SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms, struct cifs_ses *ses = io_parms->tcon->ses; *nbytes = 0; - rc = smb2_new_read_req((void **)&req, &total_len, io_parms, 0, 0); + rc = smb2_new_read_req((void **)&req, &total_len, io_parms, NULL, 0, 0); if (rc) return rc; |