diff options
| author | Pavel Shilovsky <piastry@etersoft.ru> | 2012-01-12 22:40:50 +0400 |
|---|---|---|
| committer | Pavel Shilovsky <pshilovsky@samba.org> | 2012-07-24 21:54:54 +0400 |
| commit | 3792c1732878822ebf5a1c7e83e23453b9bbb698 (patch) | |
| tree | e8c901db3f440f21233d24f9ebd65be29624b5e5 /fs/cifs/misc.c | |
| parent | 093b2bdad3221e3fae3c26d89387e7297a157664 (diff) | |
CIFS: Respect SMB2 header/max header size
Use SMB2 header size values for allocation and memset because they
are bigger and suitable for both CIFS and SMB2.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/misc.c')
| -rw-r--r-- | fs/cifs/misc.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 64601146f157..ad2538a64c70 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -29,6 +29,9 @@ #include "smberr.h" #include "nterr.h" #include "cifs_unicode.h" +#ifdef CONFIG_CIFS_SMB2 +#include "smb2pdu.h" +#endif extern mempool_t *cifs_sm_req_poolp; extern mempool_t *cifs_req_poolp; @@ -143,17 +146,27 @@ struct smb_hdr * cifs_buf_get(void) { struct smb_hdr *ret_buf = NULL; - -/* We could use negotiated size instead of max_msgsize - - but it may be more efficient to always alloc same size - albeit slightly larger than necessary and maxbuffersize - defaults to this and can not be bigger */ + size_t buf_size = sizeof(struct smb_hdr); + +#ifdef CONFIG_CIFS_SMB2 + /* + * SMB2 header is bigger than CIFS one - no problems to clean some + * more bytes for CIFS. + */ + buf_size = sizeof(struct smb2_hdr); +#endif + /* + * We could use negotiated size instead of max_msgsize - + * but it may be more efficient to always alloc same size + * albeit slightly larger than necessary and maxbuffersize + * defaults to this and can not be bigger. + */ ret_buf = mempool_alloc(cifs_req_poolp, GFP_NOFS); /* clear the first few header bytes */ /* for most paths, more is cleared in header_assemble */ if (ret_buf) { - memset(ret_buf, 0, sizeof(struct smb_hdr) + 3); + memset(ret_buf, 0, buf_size + 3); atomic_inc(&bufAllocCount); #ifdef CONFIG_CIFS_STATS2 atomic_inc(&totBufAllocCount); |