From 2dabfd5baba641588b82ba499ef81c9a378bbb23 Mon Sep 17 00:00:00 2001 From: Long Li Date: Tue, 7 Nov 2017 01:54:53 -0700 Subject: [PATCH] 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 Reviewed-by: Pavel Shilovsky Signed-off-by: Steve French Acked-by: Ronnie Sahlberg --- fs/cifs/smb2pdu.c | 14 +++++++++----- 1 file 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; -- 2.45.2