From 7d6535b720421d58886d5590ffc3617d359aa871 Mon Sep 17 00:00:00 2001 From: Samuel Cabrero Date: Mon, 30 Nov 2020 19:02:55 +0100 Subject: cifs: Simplify reconnect code when dfs upcall is enabled Some witness notifications, like client move, tell the client to reconnect to a specific IP address. In this situation the DFS failover code path has to be skipped so clean up as much as possible the cifs_reconnect() code. Signed-off-by: Samuel Cabrero Reviewed-by: Aurelien Aptel Signed-off-by: Steve French --- fs/cifs/connect.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) (limited to 'fs/cifs') diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 584eddbbbb36..156c18bf40d2 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -88,7 +88,7 @@ static void cifs_prune_tlinks(struct work_struct *work); * This should be called with server->srv_mutex held. */ #ifdef CONFIG_CIFS_DFS_UPCALL -static int reconn_set_ipaddr(struct TCP_Server_Info *server) +static int reconn_set_ipaddr_from_hostname(struct TCP_Server_Info *server) { int rc; int len; @@ -123,14 +123,7 @@ static int reconn_set_ipaddr(struct TCP_Server_Info *server) return !rc ? -1 : 0; } -#else -static inline int reconn_set_ipaddr(struct TCP_Server_Info *server) -{ - return 0; -} -#endif -#ifdef CONFIG_CIFS_DFS_UPCALL /* These functions must be called with server->srv_mutex held */ static void reconn_set_next_dfs_target(struct TCP_Server_Info *server, struct cifs_sb_info *cifs_sb, @@ -138,6 +131,7 @@ static void reconn_set_next_dfs_target(struct TCP_Server_Info *server, struct dfs_cache_tgt_iterator **tgt_it) { const char *name; + int rc; if (!cifs_sb || !cifs_sb->origin_fullpath) return; @@ -162,6 +156,12 @@ static void reconn_set_next_dfs_target(struct TCP_Server_Info *server, "%s: failed to extract hostname from target: %ld\n", __func__, PTR_ERR(server->hostname)); } + + rc = reconn_set_ipaddr_from_hostname(server); + if (rc) { + cifs_dbg(FYI, "%s: failed to resolve hostname: %d\n", + __func__, rc); + } } static inline int reconn_setup_dfs_targets(struct cifs_sb_info *cifs_sb, @@ -320,11 +320,6 @@ cifs_reconnect(struct TCP_Server_Info *server) */ reconn_set_next_dfs_target(server, cifs_sb, &tgt_list, &tgt_it); #endif - rc = reconn_set_ipaddr(server); - if (rc) { - cifs_dbg(FYI, "%s: failed to resolve hostname: %d\n", - __func__, rc); - } if (cifs_rdma_enabled(server)) rc = smbd_reconnect(server); -- cgit v1.2.3