| From db054c8a218c0559ca431d68f68dc1085073106b Mon Sep 17 00:00:00 2001 |
| From: Taehee Yoo <ap420073@gmail.com> |
| Date: Sat, 15 Feb 2020 10:50:21 +0000 |
| Subject: [PATCH] net: export netdev_next_lower_dev_rcu() |
| |
| commit 7151affeef8d527f50b4b68a871fd28bd660023f upstream. |
| |
| netdev_next_lower_dev_rcu() will be used to implement a function, |
| which is to walk all lower interfaces. |
| There are already functions that they walk their lower interface. |
| (netdev_walk_all_lower_dev_rcu, netdev_walk_all_lower_dev()). |
| But, there would be cases that couldn't be covered by given |
| netdev_walk_all_lower_dev_{rcu}() function. |
| So, some modules would want to implement own function, |
| which is to walk all lower interfaces. |
| |
| In the next patch, netdev_next_lower_dev_rcu() will be used. |
| In addition, this patch removes two unused prototypes in netdevice.h. |
| |
| Signed-off-by: Taehee Yoo <ap420073@gmail.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h |
| index 2a440d92c6de..32aee14a1cf4 100644 |
| --- a/include/linux/netdevice.h |
| +++ b/include/linux/netdevice.h |
| @@ -72,6 +72,8 @@ void netdev_set_default_ethtool_ops(struct net_device *dev, |
| #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ |
| #define NET_RX_DROP 1 /* packet dropped */ |
| |
| +#define MAX_NEST_DEV 8 |
| + |
| /* |
| * Transmit return codes: transmit return codes originate from three different |
| * namespaces: |
| @@ -4298,11 +4300,8 @@ void *netdev_lower_get_next(struct net_device *dev, |
| ldev; \ |
| ldev = netdev_lower_get_next(dev, &(iter))) |
| |
| -struct net_device *netdev_all_lower_get_next(struct net_device *dev, |
| +struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
| struct list_head **iter); |
| -struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev, |
| - struct list_head **iter); |
| - |
| int netdev_walk_all_lower_dev(struct net_device *dev, |
| int (*fn)(struct net_device *lower_dev, |
| void *data), |
| diff --git a/net/core/dev.c b/net/core/dev.c |
| index 919a0a3b3612..0a078d75d762 100644 |
| --- a/net/core/dev.c |
| +++ b/net/core/dev.c |
| @@ -146,7 +146,6 @@ |
| #include "net-sysfs.h" |
| |
| #define MAX_GRO_SKBS 8 |
| -#define MAX_NEST_DEV 8 |
| |
| /* This should be increased if a protocol with a bigger head is added. */ |
| #define GRO_MAX_HEAD (MAX_HEADER + 128) |
| @@ -6885,8 +6884,8 @@ int netdev_walk_all_lower_dev(struct net_device *dev, |
| } |
| EXPORT_SYMBOL_GPL(netdev_walk_all_lower_dev); |
| |
| -static struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
| - struct list_head **iter) |
| +struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
| + struct list_head **iter) |
| { |
| struct netdev_adjacent *lower; |
| |
| @@ -6898,6 +6897,7 @@ static struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev, |
| |
| return lower->dev; |
| } |
| +EXPORT_SYMBOL(netdev_next_lower_dev_rcu); |
| |
| static u8 __netdev_upper_depth(struct net_device *dev) |
| { |
| -- |
| 2.7.4 |
| |