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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-20 16:36:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-20 16:36:38 -0800
commit5cdec1fca2ff128ca0716dc1ef0fc0043e4ae8ab (patch)
tree35dbfed2dc57b80d18276413361c34905fe8312c /fs/cifs/cifssmb.c
parente55fdbd7414a3ee991d7081a256153f61ea98b9f (diff)
parent76dcc26f1d7f1c98c3f595379dcd9562f01bf38d (diff)
downloadop-kernel-dev-5cdec1fca2ff128ca0716dc1ef0fc0043e4ae8ab.zip
op-kernel-dev-5cdec1fca2ff128ca0716dc1ef0fc0043e4ae8ab.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: mangle existing header for SMB_COM_NT_CANCEL cifs: remove code for setting timeouts on requests [CIFS] cifs: reconnect unresponsive servers cifs: set up recurring workqueue job to do SMB echo requests cifs: add ability to send an echo request cifs: add cifs_call_async cifs: allow for different handling of received response cifs: clean up sync_mid_result cifs: don't reconnect server when we don't get a response cifs: wait indefinitely for responses cifs: Use mask of ACEs for SID Everyone to calculate all three permissions user, group, and other cifs: Fix regression during share-level security mounts (Repost) [CIFS] Update cifs version number cifs: move mid result processing into common function cifs: move locked sections out of DeleteMidQEntry and AllocMidQEntry cifs: clean up accesses to midCount cifs: make wait_for_free_request take a TCP_Server_Info pointer cifs: no need to mark smb_ses_list as cifs_demultiplex_thread is exiting cifs: don't fail writepages on -EAGAIN errors CIFS: Fix oplock break handling (try #2)
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c59
1 files changed, 54 insertions, 5 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 2f6795e..3711345 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -706,6 +706,53 @@ CIFSSMBTDis(const int xid, struct cifsTconInfo *tcon)
return rc;
}
+/*
+ * This is a no-op for now. We're not really interested in the reply, but
+ * rather in the fact that the server sent one and that server->lstrp
+ * gets updated.
+ *
+ * FIXME: maybe we should consider checking that the reply matches request?
+ */
+static void
+cifs_echo_callback(struct mid_q_entry *mid)
+{
+ struct TCP_Server_Info *server = mid->callback_data;
+
+ DeleteMidQEntry(mid);
+ atomic_dec(&server->inFlight);
+ wake_up(&server->request_q);
+}
+
+int
+CIFSSMBEcho(struct TCP_Server_Info *server)
+{
+ ECHO_REQ *smb;
+ int rc = 0;
+
+ cFYI(1, "In echo request");
+
+ rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb);
+ if (rc)
+ return rc;
+
+ /* set up echo request */
+ smb->hdr.Tid = cpu_to_le16(0xffff);
+ smb->hdr.WordCount = cpu_to_le16(1);
+ smb->EchoCount = cpu_to_le16(1);
+ smb->ByteCount = cpu_to_le16(1);
+ smb->Data[0] = 'a';
+ smb->hdr.smb_buf_length += 3;
+
+ rc = cifs_call_async(server, (struct smb_hdr *)smb,
+ cifs_echo_callback, server);
+ if (rc)
+ cFYI(1, "Echo request failed: %d", rc);
+
+ cifs_small_buf_release(smb);
+
+ return rc;
+}
+
int
CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
{
@@ -1193,7 +1240,7 @@ OldOpenRetry:
pSMB->ByteCount = cpu_to_le16(count);
/* long_op set to 1 to allow for oplock break timeouts */
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP);
+ (struct smb_hdr *)pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_opens);
if (rc) {
cFYI(1, "Error in Open = %d", rc);
@@ -1306,7 +1353,7 @@ openRetry:
pSMB->ByteCount = cpu_to_le16(count);
/* long_op set to 1 to allow for oplock break timeouts */
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned, CIFS_LONG_OP);
+ (struct smb_hdr *)pSMBr, &bytes_returned, 0);
cifs_stats_inc(&tcon->num_opens);
if (rc) {
cFYI(1, "Error in Open = %d", rc);
@@ -1388,7 +1435,7 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, const int netfid,
iov[0].iov_base = (char *)pSMB;
iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
- &resp_buf_type, CIFS_STD_OP | CIFS_LOG_ERROR);
+ &resp_buf_type, CIFS_LOG_ERROR);
cifs_stats_inc(&tcon->num_reads);
pSMBr = (READ_RSP *)iov[0].iov_base;
if (rc) {
@@ -1663,7 +1710,8 @@ int
CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
const __u16 smb_file_id, const __u64 len,
const __u64 offset, const __u32 numUnlock,
- const __u32 numLock, const __u8 lockType, const bool waitFlag)
+ const __u32 numLock, const __u8 lockType,
+ const bool waitFlag, const __u8 oplock_level)
{
int rc = 0;
LOCK_REQ *pSMB = NULL;
@@ -1691,6 +1739,7 @@ CIFSSMBLock(const int xid, struct cifsTconInfo *tcon,
pSMB->NumberOfLocks = cpu_to_le16(numLock);
pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
pSMB->LockType = lockType;
+ pSMB->OplockLevel = oplock_level;
pSMB->AndXCommand = 0xFF; /* none */
pSMB->Fid = smb_file_id; /* netfid stays le */
@@ -3087,7 +3136,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
iov[0].iov_len = pSMB->hdr.smb_buf_length + 4;
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type,
- CIFS_STD_OP);
+ 0);
cifs_stats_inc(&tcon->num_acl_get);
if (rc) {
cFYI(1, "Send error in QuerySecDesc = %d", rc);
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