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net: l3mdev: Move get_saddr and rt6_dst

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Move l3mdev_rt6_dst_by_oif and l3mdev_get_saddr to l3mdev.c. Collapse
l3mdev_get_rt6_dst into l3mdev_rt6_dst_by_oif since it is the only
user and keep the l3mdev_get_rt6_dst name for consistency with other
hooks.

A follow-on patch adds more code to these functions making them long
for inlined functions.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2016-05-07 16:48:59 -07:00 committed by David S. Miller
parent 27c0f739a0
commit 4a65896f94
3 changed files with 58 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
include/net/l3mdev.h
View File

@ -130,52 +130,9 @@ static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
return rc;
}
static inline int l3mdev_get_saddr(struct net *net, int ifindex,
struct flowi4 *fl4)
{
struct net_device *dev;
int rc = 0;
int l3mdev_get_saddr(struct net *net, int ifindex, struct flowi4 *fl4);
if (ifindex) {
rcu_read_lock();
dev = dev_get_by_index_rcu(net, ifindex);
if (dev && netif_is_l3_master(dev) &&
dev->l3mdev_ops->l3mdev_get_saddr) {
rc = dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4);
}
rcu_read_unlock();
}
return rc;
}
static inline struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,
const struct flowi6 *fl6)
{
if (netif_is_l3_master(dev) && dev->l3mdev_ops->l3mdev_get_rt6_dst)
return dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6);
return NULL;
}
static inline
struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,
const struct flowi6 *fl6)
{
struct dst_entry *dst = NULL;
struct net_device *dev;
dev = dev_get_by_index(net, fl6->flowi6_oif);
if (dev) {
dst = l3mdev_get_rt6_dst(dev, fl6);
dev_put(dev);
}
return dst;
}
struct dst_entry *l3mdev_get_rt6_dst(struct net *net, const struct flowi6 *fl6);
#else
@ -233,14 +190,7 @@ static inline int l3mdev_get_saddr(struct net *net, int ifindex,
}
static inline
struct dst_entry *l3mdev_get_rt6_dst(const struct net_device *dev,
const struct flowi6 *fl6)
{
return NULL;
}
static inline
struct dst_entry *l3mdev_rt6_dst_by_oif(struct net *net,
const struct flowi6 *fl6)
struct dst_entry *l3mdev_get_rt6_dst(struct net *net, const struct flowi6 *fl6)
{
return NULL;
}

2
net/ipv6/route.c
View File

@ -1190,7 +1190,7 @@ struct dst_entry *ip6_route_output_flags(struct net *net, const struct sock *sk,
struct dst_entry *dst;
bool any_src;
dst = l3mdev_rt6_dst_by_oif(net, fl6);
dst = l3mdev_get_rt6_dst(net, fl6);
if (dst)
return dst;

54
net/l3mdev/l3mdev.c
View File

@ -97,3 +97,57 @@ u32 l3mdev_fib_table_by_index(struct net *net, int ifindex)
return tb_id;
}
EXPORT_SYMBOL_GPL(l3mdev_fib_table_by_index);
/**
* l3mdev_get_rt6_dst - IPv6 route lookup based on flow. Returns
* cached route for L3 master device if relevant
* to flow
* @net: network namespace for device index lookup
* @fl6: IPv6 flow struct for lookup
*/
struct dst_entry *l3mdev_get_rt6_dst(struct net *net,
const struct flowi6 *fl6)
{
struct dst_entry *dst = NULL;
struct net_device *dev;
dev = dev_get_by_index(net, fl6->flowi6_oif);
if (dev) {
if (netif_is_l3_master(dev) &&
dev->l3mdev_ops->l3mdev_get_rt6_dst)
dst = dev->l3mdev_ops->l3mdev_get_rt6_dst(dev, fl6);
dev_put(dev);
}
return dst;
}
EXPORT_SYMBOL_GPL(l3mdev_get_rt6_dst);
/**
* l3mdev_get_saddr - get source address for a flow based on an interface
* enslaved to an L3 master device
* @net: network namespace for device index lookup
* @ifindex: Interface index
* @fl4: IPv4 flow struct
*/
int l3mdev_get_saddr(struct net *net, int ifindex, struct flowi4 *fl4)
{
struct net_device *dev;
int rc = 0;
if (ifindex) {
rcu_read_lock();
dev = dev_get_by_index_rcu(net, ifindex);
if (dev && netif_is_l3_master(dev) &&
dev->l3mdev_ops->l3mdev_get_saddr)
rc = dev->l3mdev_ops->l3mdev_get_saddr(dev, fl4);
rcu_read_unlock();
}
return rc;
}
EXPORT_SYMBOL_GPL(l3mdev_get_saddr);