#ifdef CONFIG_CIFS_DFS_UPCALL
#include "dfs_cache.h"
#endif
+#include "fs_context.h"
extern mempool_t *cifs_req_poolp;
extern bool disable_legacy_dialects;
#define TLINK_ERROR_EXPIRE (1 * HZ)
#define TLINK_IDLE_EXPIRE (600 * HZ)
+/* Drop the connection to not overload the server */
+#define NUM_STATUS_IO_TIMEOUT 5
+
enum {
/* Mount options that take no arguments */
Opt_user_xattr, Opt_nouser_xattr,
{ Opt_err, NULL }
};
-enum {
- Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p,
- Opt_sec_ntlmsspi, Opt_sec_ntlmssp,
- Opt_ntlm, Opt_sec_ntlmi, Opt_sec_ntlmv2,
- Opt_sec_ntlmv2i, Opt_sec_lanman,
- Opt_sec_none,
-
- Opt_sec_err
-};
-
-static const match_table_t cifs_secflavor_tokens = {
- { Opt_sec_krb5, "krb5" },
- { Opt_sec_krb5i, "krb5i" },
- { Opt_sec_krb5p, "krb5p" },
- { Opt_sec_ntlmsspi, "ntlmsspi" },
- { Opt_sec_ntlmssp, "ntlmssp" },
- { Opt_ntlm, "ntlm" },
- { Opt_sec_ntlmi, "ntlmi" },
- { Opt_sec_ntlmv2, "nontlm" },
- { Opt_sec_ntlmv2, "ntlmv2" },
- { Opt_sec_ntlmv2i, "ntlmv2i" },
- { Opt_sec_lanman, "lanman" },
- { Opt_sec_none, "none" },
-
- { Opt_sec_err, NULL }
-};
-
-/* cache flavors */
-enum {
- Opt_cache_loose,
- Opt_cache_strict,
- Opt_cache_none,
- Opt_cache_ro,
- Opt_cache_rw,
- Opt_cache_err
-};
-
-static const match_table_t cifs_cacheflavor_tokens = {
- { Opt_cache_loose, "loose" },
- { Opt_cache_strict, "strict" },
- { Opt_cache_none, "none" },
- { Opt_cache_ro, "ro" },
- { Opt_cache_rw, "singleclient" },
- { Opt_cache_err, NULL }
-};
-
-static const match_table_t cifs_smb_version_tokens = {
- { Smb_1, SMB1_VERSION_STRING },
- { Smb_20, SMB20_VERSION_STRING},
- { Smb_21, SMB21_VERSION_STRING },
- { Smb_30, SMB30_VERSION_STRING },
- { Smb_302, SMB302_VERSION_STRING },
- { Smb_302, ALT_SMB302_VERSION_STRING },
- { Smb_311, SMB311_VERSION_STRING },
- { Smb_311, ALT_SMB311_VERSION_STRING },
- { Smb_3any, SMB3ANY_VERSION_STRING },
- { Smb_default, SMBDEFAULT_VERSION_STRING },
- { Smb_version_err, NULL }
-};
-
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);
struct task_struct *task_to_wake = NULL;
struct mid_q_entry *mids[MAX_COMPOUND];
char *bufs[MAX_COMPOUND];
- unsigned int noreclaim_flag;
+ unsigned int noreclaim_flag, num_io_timeout = 0;
noreclaim_flag = memalloc_noreclaim_save();
cifs_dbg(FYI, "Demultiplex PID: %d\n", task_pid_nr(current));
continue;
}
+ if (server->ops->is_status_io_timeout &&
+ server->ops->is_status_io_timeout(buf)) {
+ num_io_timeout++;
+ if (num_io_timeout > NUM_STATUS_IO_TIMEOUT) {
+ cifs_reconnect(server);
+ num_io_timeout = 0;
+ continue;
+ }
+ }
+
server->lstrp = jiffies;
for (i = 0; i < num_mids; i++) {
return 0;
}
-static int cifs_parse_security_flavors(char *value,
- struct smb_vol *vol)
-{
-
- substring_t args[MAX_OPT_ARGS];
-
- /*
- * With mount options, the last one should win. Reset any existing
- * settings back to default.
- */
- vol->sectype = Unspecified;
- vol->sign = false;
-
- switch (match_token(value, cifs_secflavor_tokens, args)) {
- case Opt_sec_krb5p:
- cifs_dbg(VFS, "sec=krb5p is not supported!\n");
- return 1;
- case Opt_sec_krb5i:
- vol->sign = true;
- fallthrough;
- case Opt_sec_krb5:
- vol->sectype = Kerberos;
- break;
- case Opt_sec_ntlmsspi:
- vol->sign = true;
- fallthrough;
- case Opt_sec_ntlmssp:
- vol->sectype = RawNTLMSSP;
- break;
- case Opt_sec_ntlmi:
- vol->sign = true;
- fallthrough;
- case Opt_ntlm:
- vol->sectype = NTLM;
- break;
- case Opt_sec_ntlmv2i:
- vol->sign = true;
- fallthrough;
- case Opt_sec_ntlmv2:
- vol->sectype = NTLMv2;
- break;
-#ifdef CONFIG_CIFS_WEAK_PW_HASH
- case Opt_sec_lanman:
- vol->sectype = LANMAN;
- break;
-#endif
- case Opt_sec_none:
- vol->nullauth = 1;
- break;
- default:
- cifs_dbg(VFS, "bad security option: %s\n", value);
- return 1;
- }
-
- return 0;
-}
-
-static int
-cifs_parse_cache_flavor(char *value, struct smb_vol *vol)
-{
- substring_t args[MAX_OPT_ARGS];
-
- switch (match_token(value, cifs_cacheflavor_tokens, args)) {
- case Opt_cache_loose:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_strict:
- vol->direct_io = false;
- vol->strict_io = true;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_none:
- vol->direct_io = true;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = false;
- break;
- case Opt_cache_ro:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = true;
- vol->cache_rw = false;
- break;
- case Opt_cache_rw:
- vol->direct_io = false;
- vol->strict_io = false;
- vol->cache_ro = false;
- vol->cache_rw = true;
- break;
- default:
- cifs_dbg(VFS, "bad cache= option: %s\n", value);
- return 1;
- }
- return 0;
-}
-
-static int
-cifs_parse_smb_version(char *value, struct smb_vol *vol, bool is_smb3)
-{
- substring_t args[MAX_OPT_ARGS];
-
- switch (match_token(value, cifs_smb_version_tokens, args)) {
-#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
- case Smb_1:
- if (disable_legacy_dialects) {
- cifs_dbg(VFS, "mount with legacy dialect disabled\n");
- return 1;
- }
- if (is_smb3) {
- cifs_dbg(VFS, "vers=1.0 (cifs) not permitted when mounting with smb3\n");
- return 1;
- }
- cifs_dbg(VFS, "Use of the less secure dialect vers=1.0 is not recommended unless required for access to very old servers\n");
- vol->ops = &smb1_operations;
- vol->vals = &smb1_values;
- break;
- case Smb_20:
- if (disable_legacy_dialects) {
- cifs_dbg(VFS, "mount with legacy dialect disabled\n");
- return 1;
- }
- if (is_smb3) {
- cifs_dbg(VFS, "vers=2.0 not permitted when mounting with smb3\n");
- return 1;
- }
- vol->ops = &smb20_operations;
- vol->vals = &smb20_values;
- break;
-#else
- case Smb_1:
- cifs_dbg(VFS, "vers=1.0 (cifs) mount not permitted when legacy dialects disabled\n");
- return 1;
- case Smb_20:
- cifs_dbg(VFS, "vers=2.0 mount not permitted when legacy dialects disabled\n");
- return 1;
-#endif /* CIFS_ALLOW_INSECURE_LEGACY */
- case Smb_21:
- vol->ops = &smb21_operations;
- vol->vals = &smb21_values;
- break;
- case Smb_30:
- vol->ops = &smb30_operations;
- vol->vals = &smb30_values;
- break;
- case Smb_302:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smb302_values;
- break;
- case Smb_311:
- vol->ops = &smb311_operations;
- vol->vals = &smb311_values;
- break;
- case Smb_3any:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smb3any_values;
- break;
- case Smb_default:
- vol->ops = &smb30_operations; /* currently identical with 3.0 */
- vol->vals = &smbdefault_values;
- break;
- default:
- cifs_dbg(VFS, "Unknown vers= option specified: %s\n", value);
- return 1;
- }
- return 0;
-}
-
/*
* Parse a devname into substrings and populate the vol->UNC and vol->prepath
* fields with the result. Returns 0 on success and an error otherwise.
*/
tcon->retry = volume_info->retry;
tcon->nocase = volume_info->nocase;
- tcon->nohandlecache = volume_info->nohandlecache;
+ if (ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING)
+ tcon->nohandlecache = volume_info->nohandlecache;
+ else
+ tcon->nohandlecache = 1;
tcon->nodelete = volume_info->nodelete;
tcon->local_lease = volume_info->local_lease;
INIT_LIST_HEAD(&tcon->pending_opens);
saddr = (struct sockaddr *) &server->dstaddr;
if (server->dstaddr.ss_family == AF_INET6) {
- sport = ((struct sockaddr_in6 *) saddr)->sin6_port;
+ struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&server->dstaddr;
+
+ sport = ipv6->sin6_port;
slen = sizeof(struct sockaddr_in6);
sfamily = AF_INET6;
+ cifs_dbg(FYI, "%s: connecting to [%pI6]:%d\n", __func__, &ipv6->sin6_addr,
+ ntohs(sport));
} else {
- sport = ((struct sockaddr_in *) saddr)->sin_port;
+ struct sockaddr_in *ipv4 = (struct sockaddr_in *)&server->dstaddr;
+
+ sport = ipv4->sin_port;
slen = sizeof(struct sockaddr_in);
sfamily = AF_INET;
+ cifs_dbg(FYI, "%s: connecting to %pI4:%d\n", __func__, &ipv4->sin_addr,
+ ntohs(sport));
}
if (socket == NULL) {
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