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Commit cca45e05 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

vxlan: Export address checking functions 



Drivers that support VxLAN offload need to be able to sanitize the
configuration of the VxLAN device and accept / reject its offload.

For example, mlxsw requires that the local IP of the VxLAN device be set
and that packets be flooded to unicast IP(s) and not to a multicast
group.

Expose the functions that perform such checks.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Reviewed-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 88782f75

drivers/net/vxlan.c

+0 −26
Original line number Diff line number Diff line
@@ -103,22 +103,6 @@ bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr *b) 
		return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;

}



static inline bool vxlan_addr_any(const union vxlan_addr *ipa)

{

	if (ipa->sa.sa_family == AF_INET6)

		return ipv6_addr_any(&ipa->sin6.sin6_addr);

	else

		return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);

}



static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)

{

	if (ipa->sa.sa_family == AF_INET6)

		return ipv6_addr_is_multicast(&ipa->sin6.sin6_addr);

	else

		return IN_MULTICAST(ntohl(ipa->sin.sin_addr.s_addr));

}



static int vxlan_nla_get_addr(union vxlan_addr *ip, struct nlattr *nla)

{

	if (nla_len(nla) >= sizeof(struct in6_addr)) {
@@ -151,16 +135,6 @@ bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr *b) 
	return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;

}



static inline bool vxlan_addr_any(const union vxlan_addr *ipa)

{

	return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);

}



static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)

{

	return IN_MULTICAST(ntohl(ipa->sin.sin_addr.s_addr));

}



static int vxlan_nla_get_addr(union vxlan_addr *ip, struct nlattr *nla)

{

	if (nla_len(nla) >= sizeof(struct in6_addr)) {

include/net/vxlan.h

+32 −0
Original line number Diff line number Diff line
@@ -370,4 +370,36 @@ static inline unsigned short vxlan_get_sk_family(struct vxlan_sock *vs) 
	return vs->sock->sk->sk_family;

}



#if IS_ENABLED(CONFIG_IPV6)



static inline bool vxlan_addr_any(const union vxlan_addr *ipa)

{

	if (ipa->sa.sa_family == AF_INET6)

		return ipv6_addr_any(&ipa->sin6.sin6_addr);

	else

		return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);

}



static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)

{

	if (ipa->sa.sa_family == AF_INET6)

		return ipv6_addr_is_multicast(&ipa->sin6.sin6_addr);

	else

		return IN_MULTICAST(ntohl(ipa->sin.sin_addr.s_addr));

}



#else /* !IS_ENABLED(CONFIG_IPV6) */



static inline bool vxlan_addr_any(const union vxlan_addr *ipa)

{

	return ipa->sin.sin_addr.s_addr == htonl(INADDR_ANY);

}



static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)

{

	return IN_MULTICAST(ntohl(ipa->sin.sin_addr.s_addr));

}



#endif /* IS_ENABLED(CONFIG_IPV6) */



#endif