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From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: linux-usb@vger.kernel.org
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>,
	Michael Jamet <michael.jamet@intel.com>,
	Lukas Wunner <lukas@wunner.de>,
	Andreas Noever <andreas.noever@gmail.com>,
	Gil Fine <gil.fine@linux.intel.com>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: [PATCH 07/10] thunderbolt: Introduce tb_for_each_upstream_port_on_path()
Date: Thu,  5 Oct 2023 12:27:26 +0300	[thread overview]
Message-ID: <20231005092729.3595447-8-mika.westerberg@linux.intel.com> (raw)
In-Reply-To: <20231005092729.3595447-1-mika.westerberg@linux.intel.com>

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

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
 drivers/thunderbolt/tb.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 6d49510eea09..869ac360e1b5 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -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);
-- 
2.40.1


  parent reply	other threads:[~2023-10-05 13:50 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-05  9:27 [PATCH 00/10] thunderbolt: USB4 v2 asymmetric switching and more Mika Westerberg
2023-10-05  9:27 ` [PATCH 01/10] thunderbolt: Use constants for path weight and priority Mika Westerberg
2023-10-05  9:27 ` [PATCH 02/10] thunderbolt: Use weight constants in tb_usb3_consumed_bandwidth() Mika Westerberg
2023-10-05  9:27 ` [PATCH 03/10] thunderbolt: Make is_gen4_link() available to the rest of the driver Mika Westerberg
2023-10-05  9:27 ` [PATCH 04/10] thunderbolt: Change bandwidth reservations to comply USB4 v2 Mika Westerberg
2023-10-05  9:27 ` [PATCH 05/10] thunderbolt: Set path power management packet support bit for USB4 v2 routers Mika Westerberg
2023-10-05  9:27 ` [PATCH 06/10] thunderbolt: Introduce tb_port_path_direction_downstream() Mika Westerberg
2023-10-05  9:27 ` Mika Westerberg [this message]
2023-10-05  9:27 ` [PATCH 08/10] thunderbolt: Introduce tb_switch_depth() Mika Westerberg
2023-10-05  9:27 ` [PATCH 09/10] thunderbolt: Add support for asymmetric link Mika Westerberg
2023-10-05  9:27 ` [PATCH 10/10] thunderbolt: Configure asymmetric link if needed and bandwidth allows Mika Westerberg

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