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Diffstat (limited to 'fs/cifs/connect.c')
-rw-r--r--fs/cifs/connect.c68
1 files changed, 55 insertions, 13 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index a8e9738db691..8c4121da624e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -103,7 +103,7 @@ enum {
Opt_cruid, Opt_gid, Opt_file_mode,
Opt_dirmode, Opt_port,
Opt_blocksize, Opt_rsize, Opt_wsize, Opt_actimeo,
- Opt_echo_interval, Opt_max_credits,
+ Opt_echo_interval, Opt_max_credits, Opt_handletimeout,
Opt_snapshot,
/* Mount options which take string value */
@@ -208,6 +208,7 @@ static const match_table_t cifs_mount_option_tokens = {
{ Opt_rsize, "rsize=%s" },
{ Opt_wsize, "wsize=%s" },
{ Opt_actimeo, "actimeo=%s" },
+ { Opt_handletimeout, "handletimeout=%s" },
{ Opt_echo_interval, "echo_interval=%s" },
{ Opt_max_credits, "max_credits=%s" },
{ Opt_snapshot, "snapshot=%s" },
@@ -322,8 +323,6 @@ static int ip_connect(struct TCP_Server_Info *server);
static int generic_ip_connect(struct TCP_Server_Info *server);
static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink);
static void cifs_prune_tlinks(struct work_struct *work);
-static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
- const char *devname, bool is_smb3);
static char *extract_hostname(const char *unc);
/*
@@ -565,6 +564,12 @@ cifs_reconnect(struct TCP_Server_Info *server)
mid_entry->callback(mid_entry);
}
+ if (cifs_rdma_enabled(server)) {
+ mutex_lock(&server->srv_mutex);
+ smbd_destroy(server);
+ mutex_unlock(&server->srv_mutex);
+ }
+
do {
try_to_freeze();
@@ -930,10 +935,8 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
wake_up_all(&server->request_q);
/* give those requests time to exit */
msleep(125);
- if (cifs_rdma_enabled(server) && server->smbd_conn) {
- smbd_destroy(server->smbd_conn);
- server->smbd_conn = NULL;
- }
+ if (cifs_rdma_enabled(server))
+ smbd_destroy(server);
if (server->ssocket) {
sock_release(server->ssocket);
server->ssocket = NULL;
@@ -1619,6 +1622,9 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
vol->actimeo = CIFS_DEF_ACTIMEO;
+ /* Most clients set timeout to 0, allows server to use its default */
+ vol->handle_timeout = 0; /* See MS-SMB2 spec section 2.2.14.2.12 */
+
/* offer SMB2.1 and later (SMB3 etc). Secure and widely accepted */
vol->ops = &smb30_operations;
vol->vals = &smbdefault_values;
@@ -2017,6 +2023,18 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
goto cifs_parse_mount_err;
}
break;
+ case Opt_handletimeout:
+ if (get_option_ul(args, &option)) {
+ cifs_dbg(VFS, "%s: Invalid handletimeout value\n",
+ __func__);
+ goto cifs_parse_mount_err;
+ }
+ vol->handle_timeout = option;
+ if (vol->handle_timeout > SMB3_MAX_HANDLE_TIMEOUT) {
+ cifs_dbg(VFS, "Invalid handle cache timeout, longer than 16 minutes\n");
+ goto cifs_parse_mount_err;
+ }
+ break;
case Opt_echo_interval:
if (get_option_ul(args, &option)) {
cifs_dbg(VFS, "%s: Invalid echo interval value\n",
@@ -2428,6 +2446,10 @@ match_port(struct TCP_Server_Info *server, struct sockaddr *addr)
{
__be16 port, *sport;
+ /* SMBDirect manages its own ports, don't match it here */
+ if (server->rdma)
+ return true;
+
switch (addr->sa_family) {
case AF_INET:
sport = &((struct sockaddr_in *) &server->dstaddr)->sin_port;
@@ -2888,8 +2910,7 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
return NULL;
}
-static void
-cifs_put_smb_ses(struct cifs_ses *ses)
+void cifs_put_smb_ses(struct cifs_ses *ses)
{
unsigned int rc, xid;
struct TCP_Server_Info *server = ses->server;
@@ -3066,7 +3087,7 @@ cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)),
* already got a server reference (server refcount +1). See
* cifs_get_tcon() for refcount explanations.
*/
-static struct cifs_ses *
+struct cifs_ses *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
{
int rc = -ENOMEM;
@@ -3183,6 +3204,8 @@ static int match_tcon(struct cifs_tcon *tcon, struct smb_vol *volume_info)
return 0;
if (tcon->snapshot_time != volume_info->snapshot_time)
return 0;
+ if (tcon->handle_timeout != volume_info->handle_timeout)
+ return 0;
return 1;
}
@@ -3297,6 +3320,16 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
tcon->snapshot_time = volume_info->snapshot_time;
}
+ if (volume_info->handle_timeout) {
+ if (ses->server->vals->protocol_id == 0) {
+ cifs_dbg(VFS,
+ "Use SMB2.1 or later for handle timeout option\n");
+ rc = -EOPNOTSUPP;
+ goto out_fail;
+ } else
+ tcon->handle_timeout = volume_info->handle_timeout;
+ }
+
tcon->ses = ses;
if (volume_info->password) {
tcon->password = kstrdup(volume_info->password, GFP_KERNEL);
@@ -4361,7 +4394,7 @@ static int mount_do_dfs_failover(const char *path,
}
#endif
-static int
+int
cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
const char *devname, bool is_smb3)
{
@@ -4515,7 +4548,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
struct cifs_tcon *tcon = NULL;
struct TCP_Server_Info *server;
char *root_path = NULL, *full_path = NULL;
- char *old_mountdata;
+ char *old_mountdata, *origin_mountdata = NULL;
int count;
rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);
@@ -4574,6 +4607,14 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
goto error;
}
+ /* Save DFS root volume information for DFS refresh worker */
+ origin_mountdata = kstrndup(cifs_sb->mountdata,
+ strlen(cifs_sb->mountdata), GFP_KERNEL);
+ if (!origin_mountdata) {
+ rc = -ENOMEM;
+ goto error;
+ }
+
if (cifs_sb->mountdata != old_mountdata) {
/* If we were redirected, reconnect to new target server */
mount_put_conns(cifs_sb, xid, server, ses, tcon);
@@ -4682,7 +4723,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
}
spin_unlock(&cifs_tcp_ses_lock);
- rc = dfs_cache_add_vol(vol, cifs_sb->origin_fullpath);
+ rc = dfs_cache_add_vol(origin_mountdata, vol, cifs_sb->origin_fullpath);
if (rc) {
kfree(cifs_sb->origin_fullpath);
goto error;
@@ -4700,6 +4741,7 @@ out:
error:
kfree(full_path);
kfree(root_path);
+ kfree(origin_mountdata);
mount_put_conns(cifs_sb, xid, server, ses, tcon);
return rc;
}
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