[WIP] tree: get global context from handle

The transport handle always contains the global context, thus there is
no need to walk the tree to access the host.

TODO: the handle might not be present because during discovering we
don't have a transport handle yet. Thus we should have a global context
pointer per object?

Signed-off-by: Daniel Wagner <[email protected]>

Author: igaw

libnvme/src/nvme/private.h

@@ -424,10 +424,8 @@ __nvme_msg(struct nvme_global_ctx *ctx, int level, const char *func, const char
 #define nvme_msg(ctx, level, format, ...)					\
 	__nvme_msg(ctx, level, __nvme_log_func, format, ##__VA_ARGS__)
 
-#define ctx_from_ctrl(c) ((c)->s && (c)->s->h ? (c)->s->h->ctx : NULL)
-#define ctx_from_ns(n) ((n)->s && (n)->s->h ? (n)->s->h->ctx : \
-			 (n)->c && (n)->c->s && (n)->c->s->h ? (n)->c->s->h->ctx : \
-			 NULL)
+#define ctx_from_ctrl(c) ((c)->hdl->ctx)
+#define ctx_from_ns(n) ((n)->hdl->ctx)
 
 /* mi internal headers */