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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2020-05-10 18:37:42 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-05-11 04:52:33 +0200 |
| commit | 3b7bc1f09101ccace330d105c13c2946bf3be6d5 (patch) | |
| tree | 8a6adf3d5acc84c8ed1530f3b8579e03dd7972c6 /net/dsa | |
| parent | net: dsa: permit cross-chip bridging between all trees in the system (diff) | |
| download | linux-3b7bc1f09101ccace330d105c13c2946bf3be6d5.tar.xz linux-3b7bc1f09101ccace330d105c13c2946bf3be6d5.zip | |
net: dsa: introduce a dsa_switch_find function
Somewhat similar to dsa_tree_find, dsa_switch_find returns a dsa_switch
structure pointer by searching for its tree index and switch index (the
parameters from dsa,member). To be used, for example, by drivers who
implement .crosschip_bridge_join and need a reference to the other
switch indicated to by the tree_index and sw_index arguments.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa2.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index d90665b465b8..076908fdd29b 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -24,6 +24,27 @@ LIST_HEAD(dsa_tree_list); static const struct devlink_ops dsa_devlink_ops = { }; +struct dsa_switch *dsa_switch_find(int tree_index, int sw_index) +{ + struct dsa_switch_tree *dst; + struct dsa_port *dp; + + list_for_each_entry(dst, &dsa_tree_list, list) { + if (dst->index != tree_index) + continue; + + list_for_each_entry(dp, &dst->ports, list) { + if (dp->ds->index != sw_index) + continue; + + return dp->ds; + } + } + + return NULL; +} +EXPORT_SYMBOL_GPL(dsa_switch_find); + static struct dsa_switch_tree *dsa_tree_find(int index) { struct dsa_switch_tree *dst; |