diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch')
-rw-r--r-- | target/linux/generic/backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/target/linux/generic/backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch b/target/linux/generic/backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch deleted file mode 100644 index a55623519c..0000000000 --- a/target/linux/generic/backport-5.15/703-10-v5.16-net-dsa-introduce-helpers-for-iterating-through-port.patch +++ /dev/null @@ -1,68 +0,0 @@ -From 82b318983c515f29b8b3a0dad9f6a5fe8a68a7f4 Mon Sep 17 00:00:00 2001 -From: Vladimir Oltean <vladimir.oltean@nxp.com> -Date: Wed, 20 Oct 2021 20:49:49 +0300 -Subject: [PATCH] net: dsa: introduce helpers for iterating through ports using - dp - -Since the DSA conversion from the ds->ports array into the dst->ports -list, the DSA API has encouraged driver writers, as well as the core -itself, to write inefficient code. - -Currently, code that wants to filter by a specific type of port when -iterating, like {!unused, user, cpu, dsa}, uses the dsa_is_*_port helper. -Under the hood, this uses dsa_to_port which iterates again through -dst->ports. But the driver iterates through the port list already, so -the complexity is quadratic for the typical case of a single-switch -tree. - -This patch introduces some iteration helpers where the iterator is -already a struct dsa_port *dp, so that the other variant of the -filtering functions, dsa_port_is_{unused,user,cpu_dsa}, can be used -directly on the iterator. This eliminates the second lookup. - -These functions can be used both by the core and by drivers. - -Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> -Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - include/net/dsa.h | 28 ++++++++++++++++++++++++++++ - 1 file changed, 28 insertions(+) - ---- a/include/net/dsa.h -+++ b/include/net/dsa.h -@@ -476,6 +476,34 @@ static inline bool dsa_is_user_port(stru - return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; - } - -+#define dsa_tree_for_each_user_port(_dp, _dst) \ -+ list_for_each_entry((_dp), &(_dst)->ports, list) \ -+ if (dsa_port_is_user((_dp))) -+ -+#define dsa_switch_for_each_port(_dp, _ds) \ -+ list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ -+ if ((_dp)->ds == (_ds)) -+ -+#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ -+ list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ -+ if ((_dp)->ds == (_ds)) -+ -+#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ -+ list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ -+ if ((_dp)->ds == (_ds)) -+ -+#define dsa_switch_for_each_available_port(_dp, _ds) \ -+ dsa_switch_for_each_port((_dp), (_ds)) \ -+ if (!dsa_port_is_unused((_dp))) -+ -+#define dsa_switch_for_each_user_port(_dp, _ds) \ -+ dsa_switch_for_each_port((_dp), (_ds)) \ -+ if (dsa_port_is_user((_dp))) -+ -+#define dsa_switch_for_each_cpu_port(_dp, _ds) \ -+ dsa_switch_for_each_port((_dp), (_ds)) \ -+ if (dsa_port_is_cpu((_dp))) -+ - static inline u32 dsa_user_ports(struct dsa_switch *ds) - { - u32 mask = 0; |