diff options
| author |   Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-02-23 16:00:49 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-02-24 21:31:43 -0800 |
| commit | dedd6a009f4191989bee83c1faf66728648a223f (patch) | |
| tree | 125b63ccd396fec13f6a6874b3e6bbd3a6b10ac6 /net/dsa/slave.c | |
| parent | net: dsa: mv88e6xxx: use dsa_switch_for_each_port in mv88e6xxx_lag_sync_masks (diff) | |
| download | linux-dev-dedd6a009f4191989bee83c1faf66728648a223f.tar.xz linux-dev-dedd6a009f4191989bee83c1faf66728648a223f.zip | |
net: dsa: create a dsa_lag structure
The main purpose of this change is to create a data structure for a LAG
as seen by DSA. This is similar to what we have for bridging - we pass a
copy of this structure by value to ->port_lag_join and ->port_lag_leave.
For now we keep the lag_dev, id and a reference count in it. Future
patches will add a list of FDB entries for the LAG (these also need to
be refcounted to work properly).
The LAG structure is created using dsa_port_lag_create() and destroyed
using dsa_port_lag_destroy(), just like we have for bridging.
Because now, the dsa_lag itself is refcounted, we can simplify
dsa_lag_map() and dsa_lag_unmap(). These functions need to keep a LAG in
the dst->lags array only as long as at least one port uses it. The
refcounting logic inside those functions can be removed now - they are
called only when we should perform the operation.
dsa_lag_dev() is renamed to dsa_lag_by_id() and now returns the dsa_lag
structure instead of the lag_dev net_device.
dsa_lag_foreach_port() now takes the dsa_lag structure as argument.
dst->lags holds an array of dsa_lag structures.
dsa_lag_map() now also saves the dsa_lag->id value, so that linear
walking of dst->lags in drivers using dsa_lag_id() is no longer
necessary. They can just look at lag.id.
dsa_port_lag_id_get() is a helper, similar to dsa_port_bridge_num_get(),
which can be used by drivers to get the LAG ID assigned by DSA to a
given port.
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/slave.c')
| -rw-r--r-- | net/dsa/slave.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c index f61e6b72ffbb..e31c7710fee9 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -2134,7 +2134,7 @@ dsa_slave_lag_changeupper(struct net_device *dev, continue; dp = dsa_slave_to_port(lower); - if (!dp->lag_dev) + if (!dp->lag) /* Software LAG */ continue; @@ -2163,7 +2163,7 @@ dsa_slave_lag_prechangeupper(struct net_device *dev, continue; dp = dsa_slave_to_port(lower); - if (!dp->lag_dev) + if (!dp->lag) /* Software LAG */ continue; |