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mpls: export mpls functions for use by mpls iptunnels

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Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu 2015-07-21 10:43:52 +02:00 • committed by David S. Miller
parent 74a0f2fe8e
commit face0188e3
2 changed files with 15 additions and 5 deletions
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11
net/mpls/af_mpls.c
View file

@ -58,10 +58,11 @@ static inline struct mpls_dev *mpls_dev_get(const struct net_device *dev)
return rcu_dereference_rtnl(dev->mpls_ptr); return rcu_dereference_rtnl(dev->mpls_ptr);
} }
static bool mpls_output_possible(const struct net_device *dev) bool mpls_output_possible(const struct net_device *dev)
{ {
return dev && (dev->flags & IFF_UP) && netif_carrier_ok(dev); return dev && (dev->flags & IFF_UP) && netif_carrier_ok(dev);
} }
EXPORT_SYMBOL_GPL(mpls_output_possible);
static unsigned int mpls_rt_header_size(const struct mpls_route *rt) static unsigned int mpls_rt_header_size(const struct mpls_route *rt)
{ {
@ -69,13 +70,14 @@ static unsigned int mpls_rt_header_size(const struct mpls_route *rt)
return rt->rt_labels * sizeof(struct mpls_shim_hdr); return rt->rt_labels * sizeof(struct mpls_shim_hdr);
} }
static unsigned int mpls_dev_mtu(const struct net_device *dev) unsigned int mpls_dev_mtu(const struct net_device *dev)
{ {
/* The amount of data the layer 2 frame can hold */ /* The amount of data the layer 2 frame can hold */
return dev->mtu; return dev->mtu;
} }
EXPORT_SYMBOL_GPL(mpls_dev_mtu);
static bool mpls_pkt_too_big(const struct sk_buff *skb, unsigned int mtu) bool mpls_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
{ {
if (skb->len <= mtu) if (skb->len <= mtu)
return false; return false;
@ -85,6 +87,7 @@ static bool mpls_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
return true; return true;
} }
EXPORT_SYMBOL_GPL(mpls_pkt_too_big);
static bool mpls_egress(struct mpls_route *rt, struct sk_buff *skb, static bool mpls_egress(struct mpls_route *rt, struct sk_buff *skb,
struct mpls_entry_decoded dec) struct mpls_entry_decoded dec)
@ -626,6 +629,7 @@ int nla_put_labels(struct sk_buff *skb, int attrtype,
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(nla_put_labels);
int nla_get_labels(const struct nlattr *nla, int nla_get_labels(const struct nlattr *nla,
u32 max_labels, u32 *labels, u32 label[]) u32 max_labels, u32 *labels, u32 label[])
@ -671,6 +675,7 @@ int nla_get_labels(const struct nlattr *nla,
*labels = nla_labels; *labels = nla_labels;
return 0; return 0;
} }
EXPORT_SYMBOL_GPL(nla_get_labels);
static int rtm_to_route_config(struct sk_buff *skb, struct nlmsghdr *nlh, static int rtm_to_route_config(struct sk_buff *skb, struct nlmsghdr *nlh,
struct mpls_route_config *cfg) struct mpls_route_config *cfg)

9
net/mpls/internal.h
View file

@ -50,7 +50,12 @@ static inline struct mpls_entry_decoded mpls_entry_decode(struct mpls_shim_hdr *
return result; return result;
} }
int nla_put_labels(struct sk_buff *skb, int attrtype, u8 labels, const u32 label[]); int nla_put_labels(struct sk_buff *skb, int attrtype, u8 labels,
int nla_get_labels(const struct nlattr *nla, u32 max_labels, u32 *labels, u32 label[]); const u32 label[]);
int nla_get_labels(const struct nlattr *nla, u32 max_labels, u32 *labels,
u32 label[]);
bool mpls_output_possible(const struct net_device *dev);
unsigned int mpls_dev_mtu(const struct net_device *dev);
bool mpls_pkt_too_big(const struct sk_buff *skb, unsigned int mtu);
#endif /* MPLS_INTERNAL_H */ #endif /* MPLS_INTERNAL_H */