Commit 5489f333 authored by Eric Dumazet's avatar Eric Dumazet Committed by Paolo Abeni
Browse files

ipv6: make ipv6_pinfo.daddr_cache a boolean 



ipv6_pinfo.daddr_cache is either NULL or &sk->sk_v6_daddr

We do not need 8 bytes, a boolean is enough.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Reviewed-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250916160951.541279-3-edumazet@google.com


Reviewed-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 3fbb2a6f

include/linux/ipv6.h

+1 −1
Original line number Diff line number Diff line
@@ -219,7 +219,7 @@ struct ipv6_pinfo { 
#ifdef CONFIG_IPV6_SUBTREES

	bool			saddr_cache;

#endif

	const struct in6_addr		*daddr_cache;

	bool			daddr_cache;



	__be32			flow_label;

	__u32			frag_size;

include/net/ip6_route.h

+2 −2
Original line number Diff line number Diff line
@@ -229,14 +229,14 @@ static inline const struct rt6_info *skb_rt6_info(const struct sk_buff *skb) 
 *	Store a destination cache entry in a socket

 */

static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,

				 const struct in6_addr *daddr,

				 bool daddr_set,

				 bool saddr_set)

{

	struct ipv6_pinfo *np = inet6_sk(sk);



	np->dst_cookie = rt6_get_cookie(dst_rt6_info(dst));

	sk_setup_caps(sk, dst);

	np->daddr_cache = daddr;

	np->daddr_cache = daddr_set;

#ifdef CONFIG_IPV6_SUBTREES

	np->saddr_cache = saddr_set;

#endif

net/ipv6/af_inet6.c

+1 −1
Original line number Diff line number Diff line
@@ -857,7 +857,7 @@ int inet6_sk_rebuild_header(struct sock *sk) 
			return PTR_ERR(dst);

		}



		ip6_dst_store(sk, dst, NULL, false);

		ip6_dst_store(sk, dst, false, false);

	}



	return 0;

net/ipv6/inet6_connection_sock.c

+1 −1
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ static struct dst_entry *inet6_csk_route_socket(struct sock *sk, 
		dst = ip6_dst_lookup_flow(sock_net(sk), sk, fl6, final_p);



		if (!IS_ERR(dst))

			ip6_dst_store(sk, dst, NULL, false);

			ip6_dst_store(sk, dst, false, false);

	}

	return dst;

}

net/ipv6/ip6_output.c

+2 −1
Original line number Diff line number Diff line
@@ -1100,7 +1100,8 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk, 
	 *    sockets.

	 * 2. oif also should be the same.

	 */

	if (ip6_rt_check(&rt->rt6i_dst, &fl6->daddr, np->daddr_cache) ||

	if (ip6_rt_check(&rt->rt6i_dst, &fl6->daddr,

			 np->daddr_cache ? &sk->sk_v6_daddr : NULL) ||

#ifdef CONFIG_IPV6_SUBTREES

	    ip6_rt_check(&rt->rt6i_src, &fl6->saddr,

			 np->saddr_cache ? &np->saddr : NULL) ||