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authorPavel Shilovsky <piastry@etersoft.ru>2012-02-06 15:59:18 +0400
committerSteve French <sfrench@us.ibm.com>2012-03-21 11:35:03 -0500
commit2d86dbc97094ea4cfc2204fdefd7d07685496189 (patch)
tree9aee614e155fd837c78ded2cd083dead1a9d4a3f /fs/cifs/cifsproto.h
parentCIFS: Simplify inFlight logic (diff)
downloadlinux-dev-2d86dbc97094ea4cfc2204fdefd7d07685496189.tar.xz
linux-dev-2d86dbc97094ea4cfc2204fdefd7d07685496189.zip
CIFS: Introduce credit-based flow control
and send no more than credits value requests at once. For SMB/CIFS it's trivial: increment this value by receiving any message and decrement by sending one. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
-rw-r--r--fs/cifs/cifsproto.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 6f4e243e0f62..47a769e535b1 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -88,6 +88,9 @@ extern int SendReceiveBlockingLock(const unsigned int xid,
struct smb_hdr *in_buf ,
struct smb_hdr *out_buf,
int *bytes_returned);
+extern void cifs_add_credits(struct TCP_Server_Info *server,
+ const unsigned int add);
+extern void cifs_set_credits(struct TCP_Server_Info *server, const int val);
extern int checkSMB(struct smb_hdr *smb, __u16 mid, unsigned int length);
extern bool is_valid_oplock_break(struct smb_hdr *smb,
struct TCP_Server_Info *);