1 /* SPDX-License-Identifier: GPL-2.0 */
28 	struct dfs_ref *ref;  member
32 #define ref_walk_start(w)	((w)->refs)
33 #define ref_walk_end(w)	(&(w)->refs[ARRAY_SIZE((w)->refs) - 1])
34 #define ref_walk_cur(w)	((w)->ref)
35 #define ref_walk_descend(w)	(--ref_walk_cur(w) >= ref_walk_start(w))
37 #define ref_walk_tit(w)	(ref_walk_cur(w)->tit)
39 #define ref_walk_path(w)	(ref_walk_cur(w)->path)
40 #define ref_walk_fpath(w)	(ref_walk_cur(w)->full_path)
41 #define ref_walk_tl(w)		(&ref_walk_cur(w)->tl)
42 #define ref_walk_ses(w)	(ref_walk_cur(w)->ses)
50 		return ERR_PTR(-ENOMEM);  in ref_walk_alloc()
60 static inline void __ref_walk_free(struct dfs_ref *ref)  in __ref_walk_free()  argument
62 	kfree(ref->path);  in __ref_walk_free()
63 	kfree(ref->full_path);  in __ref_walk_free()
64 	dfs_cache_free_tgts(&ref->tl);  in __ref_walk_free()
65 	if (ref->ses)  in __ref_walk_free()
66 		cifs_put_smb_ses(ref->ses);  in __ref_walk_free()
67 	memset(ref, 0, sizeof(*ref));  in __ref_walk_free()
72 	struct dfs_ref *ref;  in ref_walk_free()  local
77 	for (ref = ref_walk_start(rw); ref <= ref_walk_end(rw); ref++)  in ref_walk_free()
78 		__ref_walk_free(ref);  in ref_walk_free()
84 	struct dfs_ref *ref = ref_walk_cur(rw) + 1;  in ref_walk_advance()  local
86 	if (ref > ref_walk_end(rw))  in ref_walk_advance()
87 		return -ELOOP;  in ref_walk_advance()
88 	__ref_walk_free(ref);  in ref_walk_advance()
89 	ref_walk_cur(rw) = ref;  in ref_walk_advance()
97 	struct dfs_ref *ref = ref_walk_cur(rw);  in ref_walk_next_tgt()  local
99 	if (!ref->tit)  in ref_walk_next_tgt()
100 		tit = dfs_cache_get_tgt_iterator(&ref->tl);  in ref_walk_next_tgt()
102 		tit = dfs_cache_get_next_tgt(&ref->tl, ref->tit);  in ref_walk_next_tgt()
103 	ref->tit = tit;  in ref_walk_next_tgt()
129 	struct dfs_ref *ref = ref_walk_start(rw);  in ref_walk_set_tcon()  local
131 	for (; ref <= ref_walk_cur(rw); ref++) {  in ref_walk_set_tcon()
132 		if (WARN_ON_ONCE(!ref->ses))  in ref_walk_set_tcon()
134 		list_add(&ref->ses->dlist, &tcon->dfs_ses_list);  in ref_walk_set_tcon()
135 		ref->ses = NULL;  in ref_walk_set_tcon()
139 int dfs_parse_target_referral(const char *full_path, const struct dfs_info3_param *ref,
145 	return dfs_cache_canonical_path(path, cifs_sb->local_nls, cifs_remap(cifs_sb));  in dfs_get_path()
149 				   struct dfs_info3_param *ref, struct dfs_cache_tgt_list *tl)  in dfs_get_referral()  argument
151 	struct smb3_fs_context *ctx = mnt_ctx->fs_ctx;  in dfs_get_referral()
152 	struct cifs_sb_info *cifs_sb = mnt_ctx->cifs_sb;  in dfs_get_referral()
153 	struct cifs_ses *rses = ctx->dfs_root_ses ?: mnt_ctx->ses;  in dfs_get_referral()
155 	return dfs_cache_find(mnt_ctx->xid, rses, cifs_sb->local_nls,  in dfs_get_referral()
156 			      cifs_remap(cifs_sb), path, ref, tl);  in dfs_get_referral()
161  * @ses->dfs_root_ses when a new session is created, so we need to put extra
170 		list_del_init(&ses->dlist);  in dfs_put_root_smb_sessions()