From: Mika Westerberg mika.westerberg@linux.intel.com
[ Upstream commit 956c3abe72fb6a651b8cf77c28462f7e5b6a48b1 ]
This is useful when walking over upstream lane adapters over given path.
Signed-off-by: Mika Westerberg mika.westerberg@linux.intel.com Signed-off-by: Qin Wan qin.wan@hp.com Signed-off-by: Alexandru Gagniuc alexandru.gagniuc@hp.com --- drivers/thunderbolt/tb.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 6d66dd2a3ab0..4cd5f48e3dee 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1076,6 +1076,21 @@ 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);