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| author | David S. Miller <davem@davemloft.net> | 2017-10-12 12:10:02 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-12 12:10:02 -0700 |
| commit | d71a756ad542c013e3ed5348db89f43ad105392e (patch) | |
| tree | 4a065af2789121f5df4bf8011ae1dfe83476c364 /net/dsa/dsa.c | |
| parent | 3f7832c26cc0cad2245981f777f3ee684399ce93 (diff) | |
| parent | 723934fb792f2dbc76ee3ac334fcde95136bf409 (diff) | |
| download | linux-d71a756ad542c013e3ed5348db89f43ad105392e.tar.bz2 | |
Merge branch 'dsa-ACB-for-bcm_sf2-and-bcmsysport'
Florian Fainelli says:
====================
Enable ACB for bcm_sf2 and bcmsysport
This patch series enables Broadcom's Advanced Congestion Buffering mechanism
which requires cooperation between the CPU/Management Ethernet MAC controller
and the switch.
I took the notifier approach because ultimately the information we need to
carry to the master network device is DSA specific and I saw little room for
generalizing beyond what DSA requires. Chances are that this is highly specific
to the Broadcom HW as I don't know of any HW out there that supports something
nearly similar for similar or identical needs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/dsa.c')
| -rw-r--r-- | net/dsa/dsa.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 51ca2a524a27..832c659ff993 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -14,6 +14,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/module.h> +#include <linux/notifier.h> #include <linux/of.h> #include <linux/of_mdio.h> #include <linux/of_platform.h> @@ -261,6 +262,28 @@ bool dsa_schedule_work(struct work_struct *work) return queue_work(dsa_owq, work); } +static ATOMIC_NOTIFIER_HEAD(dsa_notif_chain); + +int register_dsa_notifier(struct notifier_block *nb) +{ + return atomic_notifier_chain_register(&dsa_notif_chain, nb); +} +EXPORT_SYMBOL_GPL(register_dsa_notifier); + +int unregister_dsa_notifier(struct notifier_block *nb) +{ + return atomic_notifier_chain_unregister(&dsa_notif_chain, nb); +} +EXPORT_SYMBOL_GPL(unregister_dsa_notifier); + +int call_dsa_notifiers(unsigned long val, struct net_device *dev, + struct dsa_notifier_info *info) +{ + info->dev = dev; + return atomic_notifier_call_chain(&dsa_notif_chain, val, info); +} +EXPORT_SYMBOL_GPL(call_dsa_notifiers); + static int __init dsa_init_module(void) { int rc; |