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net: if: Add helper to return interface of given type

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The helper will return the first network interface of a desired
L2 type.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2017-08-08 08:38:47 +03:00
commit f6661512a4
2 changed files with 23 additions and 0 deletions
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10
include/net/net_if.h
View file

@ -529,6 +529,16 @@ static inline void net_if_router_rm(struct net_if_router *router)
*/
struct net_if *net_if_get_default(void);
/**
* @brief Get the first network interface according to its type.
*
* @param l2 Layer 2 type of the network interface.
*
* @return First network interface of a given type or NULL if no such
* interfaces was found.
*/
struct net_if *net_if_get_first_by_type(const struct net_l2 *l2);
#if defined(CONFIG_NET_IPV6)
/**
* @brief Check if this IPv6 address belongs to one of the interfaces.

13
subsys/net/ip/net_if.c
View file

@ -336,6 +336,19 @@ struct net_if *net_if_get_default(void)
return __net_if_start;
}
struct net_if *net_if_get_first_by_type(const struct net_l2 *l2)
{
struct net_if *iface;
for (iface = __net_if_start; iface != __net_if_end; iface++) {
if (iface->l2 == l2) {
return iface;
}
}
return NULL;
}
#if defined(CONFIG_NET_IPV6)
#if defined(CONFIG_NET_IPV6_MLD)