[PATCH net-next 05/11] IB/ipoib: Flip to new dev walk API

David Ahern
2016-10-12T20:51:53Z

Convert ipoib_get_net_dev_match_addr to the new upper device walk API.
This is just a move to the new API; no functional change is intended.

Signed-off-by: David Ahern <dsa-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
---
drivers/infiniband/ulp/ipoib/ipoib_main.c | 37 +++++++++++++++++++++----------
1 file changed, 25 insertions(+), 12 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 5636fc3da6b8..624855ab7205 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -292,6 +292,25 @@ static struct net_device *ipoib_get_master_net_dev(struct net_device *dev)
return dev;
}

+struct ipoib_walk_data {
+ const struct sockaddr *addr;
+ struct net_device *result;
+};
+
+static int ipoib_upper_walk(struct net_device *upper, void *_data)
+{
+ struct ipoib_walk_data *data = (struct ipoib_walk_data *)_data;
+ int ret = 0;
+
+ if (ipoib_is_dev_match_addr_rcu(data->addr, upper)) {
+ dev_hold(upper);
+ data->result = upper;
+ ret = 1;
+ }
+
+ return ret;
+}
+
/**
* Find a net_device matching the given address, which is an upper device of
* the given net_device.
@@ -304,27 +323,21 @@ static struct net_device *ipoib_get_master_net_dev(struct net_device *dev)
static struct net_device *ipoib_get_net_dev_match_addr(
const struct sockaddr *addr, struct net_device *dev)
{
- struct net_device *upper,
- *result = NULL;
- struct list_head *iter;
+ struct ipoib_walk_data data = {
+ .addr = addr,
+ };

rcu_read_lock();
if (ipoib_is_dev_match_addr_rcu(addr, dev)) {
dev_hold(dev);
- result = dev;
+ data.result = dev;
goto out;
}

- netdev_for_each_all_upper_dev_rcu(dev, upper, iter) {
- if (ipoib_is_dev_match_addr_rcu(addr, upper)) {
- dev_hold(upper);
- result = upper;
- break;
- }
- }
+ netdev_walk_all_upper_dev_rcu(dev, ipoib_upper_walk, &data);
out:
rcu_read_unlock();
- return result;
+ return data.result;
}

/* returns the number of IPoIB netdevs on top a given ipoib device matching a