Commit afc4eef8 authored by Martin KaFai Lau's avatar Martin KaFai Lau Committed by David S. Miller
Browse files

ipv6: Remove DST_METRICS_FORCE_OVERWRITE and _rt6i_peer 



_rt6i_peer is no longer needed after the last patch,
'ipv6: Stop rt6_info from using inet_peer's metrics'.

DST_METRICS_FORCE_OVERWRITE is added by
commit e5fd387a ("ipv6: do not overwrite inetpeer metrics prematurely").
Since inetpeer is no longer used for metrics, this bit is also not needed.

Signed-off-by: default avatarMartin KaFai Lau <kafai@fb.com>
Reviewed-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Michal Kubeček <mkubecek@suse.cz>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b32b5ad

include/net/dst.h

+0 −6
Original line number Diff line number Diff line
@@ -109,7 +109,6 @@ u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old); 
extern const u32 dst_default_metrics[];



#define DST_METRICS_READ_ONLY		0x1UL

#define DST_METRICS_FORCE_OVERWRITE	0x2UL

#define DST_METRICS_FLAGS		0x3UL

#define __DST_METRICS_PTR(Y)	\

	((u32 *)((Y) & ~DST_METRICS_FLAGS))
@@ -120,11 +119,6 @@ static inline bool dst_metrics_read_only(const struct dst_entry *dst) 
	return dst->_metrics & DST_METRICS_READ_ONLY;

}



static inline void dst_metrics_set_force_overwrite(struct dst_entry *dst)

{

	dst->_metrics |= DST_METRICS_FORCE_OVERWRITE;

}



void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old);



static inline void dst_destroy_metrics_generic(struct dst_entry *dst)

include/net/ip6_fib.h

+0 −31
Original line number Diff line number Diff line
@@ -121,7 +121,6 @@ struct rt6_info { 
	struct rt6key			rt6i_prefsrc;



	struct inet6_dev		*rt6i_idev;

	unsigned long			_rt6i_peer;



	u32				rt6i_metric;

	u32				rt6i_pmtu;
@@ -130,36 +129,6 @@ struct rt6_info { 
	u8				rt6i_protocol;

};



static inline struct inet_peer *rt6_peer_ptr(struct rt6_info *rt)

{

	return inetpeer_ptr(rt->_rt6i_peer);

}



static inline bool rt6_has_peer(struct rt6_info *rt)

{

	return inetpeer_ptr_is_peer(rt->_rt6i_peer);

}



static inline void __rt6_set_peer(struct rt6_info *rt, struct inet_peer *peer)

{

	__inetpeer_ptr_set_peer(&rt->_rt6i_peer, peer);

}



static inline bool rt6_set_peer(struct rt6_info *rt, struct inet_peer *peer)

{

	return inetpeer_ptr_set_peer(&rt->_rt6i_peer, peer);

}



static inline void rt6_init_peer(struct rt6_info *rt, struct inet_peer_base *base)

{

	inetpeer_init_ptr(&rt->_rt6i_peer, base);

}



static inline void rt6_transfer_peer(struct rt6_info *rt, struct rt6_info *ort)

{

	inetpeer_transfer_peer(&rt->_rt6i_peer, &ort->_rt6i_peer);

}



static inline struct inet6_dev *ip6_dst_idev(struct dst_entry *dst)

{

	return ((struct rt6_info *)dst)->rt6i_idev;

net/ipv6/route.c

+1 −35
Original line number Diff line number Diff line
@@ -105,36 +105,6 @@ static struct rt6_info *rt6_get_route_info(struct net *net, 
					   const struct in6_addr *gwaddr, int ifindex);

#endif



static void rt6_bind_peer(struct rt6_info *rt, int create)

{

	struct inet_peer_base *base;

	struct inet_peer *peer;



	base = inetpeer_base_ptr(rt->_rt6i_peer);

	if (!base)

		return;



	peer = inet_getpeer_v6(base, &rt->rt6i_dst.addr, create);

	if (peer) {

		if (!rt6_set_peer(rt, peer))

			inet_putpeer(peer);

	}

}



static struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)

{

	if (rt6_has_peer(rt))

		return rt6_peer_ptr(rt);



	rt6_bind_peer(rt, create);

	return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL);

}



static struct inet_peer *rt6_get_peer_create(struct rt6_info *rt)

{

	return __rt6_get_peer(rt, 1);

}



static u32 *ipv6_cow_metrics(struct dst_entry *dst, unsigned long old)

{

	struct rt6_info *rt = (struct rt6_info *)dst;
@@ -291,7 +261,6 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net, 
		struct dst_entry *dst = &rt->dst;



		memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));

		rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);

		INIT_LIST_HEAD(&rt->rt6i_siblings);

	}

	return rt;
@@ -1052,7 +1021,6 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori 
		new = &rt->dst;



		memset(new + 1, 0, sizeof(*rt) - sizeof(*new));

		rt6_init_peer(rt, net->ipv6.peers);



		new->__use = 1;

		new->input = dst_discard;
@@ -1597,10 +1565,8 @@ int ip6_route_add(struct fib6_config *cfg) 


	ipv6_addr_prefix(&rt->rt6i_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);

	rt->rt6i_dst.plen = cfg->fc_dst_len;

	if (rt->rt6i_dst.plen == 128) {

	if (rt->rt6i_dst.plen == 128)

		rt->dst.flags |= DST_HOST;

		dst_metrics_set_force_overwrite(&rt->dst);

	}



#ifdef CONFIG_IPV6_SUBTREES

	ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);

net/ipv6/xfrm6_policy.c

+0 −14
Original line number Diff line number Diff line
@@ -71,13 +71,6 @@ static int xfrm6_get_tos(const struct flowi *fl) 
	return 0;

}



static void xfrm6_init_dst(struct net *net, struct xfrm_dst *xdst)

{

	struct rt6_info *rt = (struct rt6_info *)xdst;



	rt6_init_peer(rt, net->ipv6.peers);

}



static int xfrm6_init_path(struct xfrm_dst *path, struct dst_entry *dst,

			   int nfheader_len)

{
@@ -106,8 +99,6 @@ static int xfrm6_fill_dst(struct xfrm_dst *xdst, struct net_device *dev, 
		return -ENODEV;

	}



	rt6_transfer_peer(&xdst->u.rt6, rt);



	/* Sheit... I remember I did this right. Apparently,

	 * it was magically lost, so this code needs audit */

	xdst->u.rt6.rt6i_flags = rt->rt6i_flags & (RTF_ANYCAST |
@@ -255,10 +246,6 @@ static void xfrm6_dst_destroy(struct dst_entry *dst) 
	if (likely(xdst->u.rt6.rt6i_idev))

		in6_dev_put(xdst->u.rt6.rt6i_idev);

	dst_destroy_metrics_generic(dst);

	if (rt6_has_peer(&xdst->u.rt6)) {

		struct inet_peer *peer = rt6_peer_ptr(&xdst->u.rt6);

		inet_putpeer(peer);

	}

	xfrm_dst_destroy(xdst);

}
@@ -308,7 +295,6 @@ static struct xfrm_policy_afinfo xfrm6_policy_afinfo = { 
	.get_saddr =		xfrm6_get_saddr,

	.decode_session =	_decode_session6,

	.get_tos =		xfrm6_get_tos,

	.init_dst =		xfrm6_init_dst,

	.init_path =		xfrm6_init_path,

	.fill_dst =		xfrm6_fill_dst,

	.blackhole_route =	ip6_blackhole_route,

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