ipv6: Introduce rt6_nexthop() to select nexthop address. (9bb5a148) · Commits · 戴 / test

For RTF_GATEWAY route, return rt->rt6i_gateway. Otherwise, return 2nd argument (destination address). This will be used by following patches which remove rt->n dependency patches in ip6_dst_lookup_tail() and ip6_finish_output2(). Signed-off-by:

YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:

David S. Miller <davem@davemloft.net>

include/net/ip6_route.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ struct route_info {
		#include <net/sock.h>
		#include <linux/ip.h>
		#include <linux/ipv6.h>
		#include <linux/route.h>

		#define RT6_LOOKUP_F_IFACE 0x00000001
		#define RT6_LOOKUP_F_REACHABLE 0x00000002
		@@ -194,4 +195,11 @@ static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
		skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
		}

		static inline struct in6_addr rt6_nexthop(struct rt6_info rt, struct in6_addr *dest)
		{
		if (rt->rt6i_flags & RTF_GATEWAY)
		return &rt->rt6i_gateway;
		return dest;
		}

		#endif

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