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-rw-r--r--fs/cifs/connect.c198
1 files changed, 22 insertions, 176 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 6df6fa14cba..2fdbe08a7a2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -82,8 +82,7 @@ enum {
Opt_serverino, Opt_noserverino,
Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl,
Opt_acl, Opt_noacl, Opt_locallease,
- Opt_sign, Opt_seal, Opt_direct,
- Opt_strictcache, Opt_noac,
+ Opt_sign, Opt_seal, Opt_noac,
Opt_fsc, Opt_mfsymlinks,
Opt_multiuser, Opt_sloppy,
@@ -160,10 +159,6 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_locallease, "locallease" },
{ Opt_sign, "sign" },
{ Opt_seal, "seal" },
- { Opt_direct, "direct" },
- { Opt_direct, "directio" },
- { Opt_direct, "forcedirectio" },
- { Opt_strictcache, "strictcache" },
{ Opt_noac, "noac" },
{ Opt_fsc, "fsc" },
{ Opt_mfsymlinks, "mfsymlinks" },
@@ -277,6 +272,7 @@ static const match_table_t cifs_cacheflavor_tokens = {
static const match_table_t cifs_smb_version_tokens = {
{ Smb_1, SMB1_VERSION_STRING },
{ Smb_21, SMB21_VERSION_STRING },
+ { Smb_30, SMB30_VERSION_STRING },
};
static int ip_connect(struct TCP_Server_Info *server);
@@ -819,6 +815,10 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
cifs_dump_mem("Bad SMB: ", buf,
min_t(unsigned int, server->total_read, 48));
+ if (server->ops->is_status_pending &&
+ server->ops->is_status_pending(buf, server, length))
+ return -1;
+
if (!mid)
return length;
@@ -1075,6 +1075,10 @@ cifs_parse_smb_version(char *value, struct smb_vol *vol)
vol->ops = &smb21_operations;
vol->vals = &smb21_values;
break;
+ case Smb_30:
+ vol->ops = &smb21_operations; /* currently identical with 2.1 */
+ vol->vals = &smb30_values;
+ break;
#endif
default:
cERROR(1, "Unknown vers= option specified: %s", value);
@@ -1101,8 +1105,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
char *string = NULL;
char *tmp_end, *value;
char delim;
- bool cache_specified = false;
- static bool cache_warned = false;
separator[0] = ',';
separator[1] = 0;
@@ -1134,6 +1136,9 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
/* default to using server inode numbers where available */
vol->server_ino = 1;
+ /* default is to use strict cifs caching semantics */
+ vol->strict_io = true;
+
vol->actimeo = CIFS_DEF_ACTIMEO;
/* FIXME: add autonegotiation -- for now, SMB1 is default */
@@ -1317,22 +1322,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
*/
vol->seal = 1;
break;
- case Opt_direct:
- cache_specified = true;
- vol->direct_io = true;
- vol->strict_io = false;
- cERROR(1, "The \"directio\" option will be removed in "
- "3.7. Please switch to the \"cache=none\" "
- "option.");
- break;
- case Opt_strictcache:
- cache_specified = true;
- vol->direct_io = false;
- vol->strict_io = true;
- cERROR(1, "The \"strictcache\" option will be removed "
- "in 3.7. Please switch to the \"cache=strict\" "
- "option.");
- break;
case Opt_noac:
printk(KERN_WARNING "CIFS: Mount option noac not "
"supported. Instead set "
@@ -1676,8 +1665,13 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
if (string == NULL)
goto out_nomem;
- if (strnicmp(string, "TCP_NODELAY", 11) == 0)
+ if (strnicmp(string, "TCP_NODELAY", 11) == 0) {
+ printk(KERN_WARNING "CIFS: the "
+ "sockopt=TCP_NODELAY option has been "
+ "deprecated and will be removed "
+ "in 3.9\n");
vol->sockopt_tcp_nodelay = 1;
+ }
break;
case Opt_netbiosname:
string = match_strdup(args);
@@ -1762,7 +1756,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
goto cifs_parse_mount_err;
break;
case Opt_cache:
- cache_specified = true;
string = match_strdup(args);
if (string == NULL)
goto out_nomem;
@@ -1813,14 +1806,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
"specified with no gid= option.\n");
- /* FIXME: remove this block in 3.7 */
- if (!cache_specified && !cache_warned) {
- cache_warned = true;
- printk(KERN_NOTICE "CIFS: no cache= option specified, using "
- "\"cache=loose\". This default will change "
- "to \"cache=strict\" in 3.7.\n");
- }
-
kfree(mountdata_copy);
return 0;
@@ -2636,6 +2621,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
tcon->retry = volume_info->retry;
tcon->nocase = volume_info->nocase;
tcon->local_lease = volume_info->local_lease;
+ INIT_LIST_HEAD(&tcon->pending_opens);
spin_lock(&cifs_tcp_ses_lock);
list_add(&tcon->tcon_list, &ses->tcon_list);
@@ -3261,146 +3247,6 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
"mount option supported");
}
-/*
- * When the server supports very large reads and writes via POSIX extensions,
- * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not
- * including the RFC1001 length.
- *
- * Note that this might make for "interesting" allocation problems during
- * writeback however as we have to allocate an array of pointers for the
- * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096.
- *
- * For reads, there is a similar problem as we need to allocate an array
- * of kvecs to handle the receive, though that should only need to be done
- * once.
- */
-#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4)
-
-/*
- * When the server doesn't allow large posix writes, only allow a rsize/wsize
- * of 2^17-1 minus the size of the call header. That allows for a read or
- * write up to the maximum size described by RFC1002.
- */
-#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
-#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
-
-/*
- * The default wsize is 1M. find_get_pages seems to return a maximum of 256
- * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill
- * a single wsize request with a single call.
- */
-#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
-
-/*
- * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
- * those values when posix extensions aren't in force. In actuality here, we
- * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
- * to be ok with the extra byte even though Windows doesn't send writes that
- * are that large.
- *
- * Citation:
- *
- * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
- */
-#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
-#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
-
-/*
- * On hosts with high memory, we can't currently support wsize/rsize that are
- * larger than we can kmap at once. Cap the rsize/wsize at
- * LAST_PKMAP * PAGE_SIZE. We'll never be able to fill a read or write request
- * larger than that anyway.
- */
-#ifdef CONFIG_HIGHMEM
-#define CIFS_KMAP_SIZE_LIMIT (LAST_PKMAP * PAGE_CACHE_SIZE)
-#else /* CONFIG_HIGHMEM */
-#define CIFS_KMAP_SIZE_LIMIT (1<<24)
-#endif /* CONFIG_HIGHMEM */
-
-static unsigned int
-cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
- __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
- struct TCP_Server_Info *server = tcon->ses->server;
- unsigned int wsize;
-
- /* start with specified wsize, or default */
- if (pvolume_info->wsize)
- wsize = pvolume_info->wsize;
- else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
- wsize = CIFS_DEFAULT_IOSIZE;
- else
- wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
-
- /* can server support 24-bit write sizes? (via UNIX extensions) */
- if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
- wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
-
- /*
- * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
- * Limit it to max buffer offered by the server, minus the size of the
- * WRITEX header, not including the 4 byte RFC1001 length.
- */
- if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
- (!(server->capabilities & CAP_UNIX) &&
- (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED))))
- wsize = min_t(unsigned int, wsize,
- server->maxBuf - sizeof(WRITE_REQ) + 4);
-
- /* limit to the amount that we can kmap at once */
- wsize = min_t(unsigned int, wsize, CIFS_KMAP_SIZE_LIMIT);
-
- /* hard limit of CIFS_MAX_WSIZE */
- wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
-
- return wsize;
-}
-
-static unsigned int
-cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
-{
- __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
- struct TCP_Server_Info *server = tcon->ses->server;
- unsigned int rsize, defsize;
-
- /*
- * Set default value...
- *
- * HACK alert! Ancient servers have very small buffers. Even though
- * MS-CIFS indicates that servers are only limited by the client's
- * bufsize for reads, testing against win98se shows that it throws
- * INVALID_PARAMETER errors if you try to request too large a read.
- * OS/2 just sends back short reads.
- *
- * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
- * it can't handle a read request larger than its MaxBufferSize either.
- */
- if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
- defsize = CIFS_DEFAULT_IOSIZE;
- else if (server->capabilities & CAP_LARGE_READ_X)
- defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
- else
- defsize = server->maxBuf - sizeof(READ_RSP);
-
- rsize = pvolume_info->rsize ? pvolume_info->rsize : defsize;
-
- /*
- * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
- * the client's MaxBufferSize.
- */
- if (!(server->capabilities & CAP_LARGE_READ_X))
- rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
-
- /* limit to the amount that we can kmap at once */
- rsize = min_t(unsigned int, rsize, CIFS_KMAP_SIZE_LIMIT);
-
- /* hard limit of CIFS_MAX_RSIZE */
- rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
-
- return rsize;
-}
-
static void
cleanup_volume_info_contents(struct smb_vol *volume_info)
{
@@ -3651,8 +3497,8 @@ try_mount_again:
if (!tcon->ipc && server->ops->qfs_tcon)
server->ops->qfs_tcon(xid, tcon);
- cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info);
- cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info);
+ cifs_sb->wsize = server->ops->negotiate_wsize(tcon, volume_info);
+ cifs_sb->rsize = server->ops->negotiate_rsize(tcon, volume_info);
/* tune readahead according to rsize */
cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-19 17:32:02 +0000