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thunderbolt: Introduce tb_for_each_upstream_port_on_path()

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This is useful when walking over upstream lane adapters over given path.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Mika Westerberg
2023-09-03 08:25:39 +03:00
parent 2bfeca73e9
commit 956c3abe72
1 changed files with 15 additions and 0 deletions
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drivers/thunderbolt/tb.h
+15
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@@ -1073,6 +1073,21 @@ static inline bool tb_port_use_credit_allocation(const struct tb_port *port)
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p)))
/**
* tb_for_each_upstream_port_on_path() - Iterate over each upstreamm port on path
* @src: Source port
* @dst: Destination port
* @p: Port used as iterator
*
* Walks over each upstream lane adapter on path from @src to @dst.
*/
#define tb_for_each_upstream_port_on_path(src, dst, p) \
for ((p) = tb_next_port_on_path((src), (dst), NULL); (p); \
(p) = tb_next_port_on_path((src), (dst), (p))) \
if (!tb_port_is_null((p)) || !tb_is_upstream_port((p))) {\
continue; \
} else
int tb_port_get_link_speed(struct tb_port *port);
int tb_port_get_link_generation(struct tb_port *port);
int tb_port_get_link_width(struct tb_port *port);