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Commit 3b6761d1 authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

net/ipv6: Move dst flags to booleans in fib entries 



Continuing to wean FIB paths off of dst_entry, use a bool to hold
requests for certain dst settings. Add a helper to convert the
flags to DST flags when a FIB entry is converted to a dst_entry.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dec9b0e2

include/net/ip6_fib.h

+4 −1
Original line number Diff line number Diff line
@@ -177,7 +177,10 @@ struct rt6_info { 
	u8				fib6_type;

	u8				exception_bucket_flushed:1,

					should_flush:1,

					unused:6;

					dst_nocount:1,

					dst_nopolicy:1,

					dst_host:1,

					unused:3;



	unsigned long			expires;

	struct dst_metrics		*fib6_metrics;

net/ipv6/addrconf.c

+2 −2
Original line number Diff line number Diff line
@@ -1046,7 +1046,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, 


	if (net->ipv6.devconf_all->disable_policy ||

	    idev->cnf.disable_policy)

		rt->dst.flags |= DST_NOPOLICY;

		rt->dst_nopolicy = true;



	neigh_parms_data_state_setall(idev->nd_parms);
@@ -5981,7 +5981,7 @@ void addrconf_disable_policy_idev(struct inet6_dev *idev, int val) 
			int cpu;



			rcu_read_lock();

			addrconf_set_nopolicy(ifa->rt, val);

			ifa->rt->dst_nopolicy = val ? true : false;

			if (rt->rt6i_pcpu) {

				for_each_possible_cpu(cpu) {

					struct rt6_info **rtp;

net/ipv6/route.c

+24 −5
Original line number Diff line number Diff line
@@ -937,6 +937,20 @@ static int ip6_rt_type_to_error(u8 fib6_type) 
	return fib6_prop[fib6_type];

}



static unsigned short fib6_info_dst_flags(struct rt6_info *rt)

{

	unsigned short flags = 0;



	if (rt->dst_nocount)

		flags |= DST_NOCOUNT;

	if (rt->dst_nopolicy)

		flags |= DST_NOPOLICY;

	if (rt->dst_host)

		flags |= DST_HOST;



	return flags;

}



static void ip6_rt_init_dst_reject(struct rt6_info *rt, struct rt6_info *ort)

{

	rt->dst.error = ip6_rt_type_to_error(ort->fib6_type);
@@ -961,6 +975,8 @@ static void ip6_rt_init_dst_reject(struct rt6_info *rt, struct rt6_info *ort) 


static void ip6_rt_init_dst(struct rt6_info *rt, struct rt6_info *ort)

{

	rt->dst.flags |= fib6_info_dst_flags(ort);



	if (ort->rt6i_flags & RTF_REJECT) {

		ip6_rt_init_dst_reject(rt, ort);

		return;
@@ -970,7 +986,6 @@ static void ip6_rt_init_dst(struct rt6_info *rt, struct rt6_info *ort) 
	rt->dst.output = ip6_output;



	if (ort->fib6_type == RTN_LOCAL) {

		rt->dst.flags |= DST_HOST;

		rt->dst.input = ip6_input;

	} else if (ipv6_addr_type(&ort->rt6i_dst.addr) & IPV6_ADDR_MULTICAST) {

		rt->dst.input = ip6_mc_input;
@@ -1058,10 +1073,11 @@ static bool ip6_hold_safe(struct net *net, struct rt6_info **prt, 
/* called with rcu_lock held */

static struct rt6_info *ip6_create_rt_rcu(struct rt6_info *rt)

{

	unsigned short flags = fib6_info_dst_flags(rt);

	struct net_device *dev = rt->fib6_nh.nh_dev;

	struct rt6_info *nrt;



	nrt = __ip6_dst_alloc(dev_net(dev), dev, 0);

	nrt = __ip6_dst_alloc(dev_net(dev), dev, flags);

	if (nrt)

		ip6_rt_copy_init(nrt, rt);
@@ -1229,12 +1245,13 @@ static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort, 


static struct rt6_info *ip6_rt_pcpu_alloc(struct rt6_info *rt)

{

	unsigned short flags = fib6_info_dst_flags(rt);

	struct net_device *dev;

	struct rt6_info *pcpu_rt;



	rcu_read_lock();

	dev = ip6_rt_get_dev_rcu(rt);

	pcpu_rt = __ip6_dst_alloc(dev_net(dev), dev, rt->dst.flags);

	pcpu_rt = __ip6_dst_alloc(dev_net(dev), dev, flags);

	rcu_read_unlock();

	if (!pcpu_rt)

		return NULL;
@@ -2965,7 +2982,7 @@ static struct rt6_info *ip6_route_info_create(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)

		rt->dst.flags |= DST_HOST;

		rt->dst_host = true;



#ifdef CONFIG_IPV6_SUBTREES

	ipv6_addr_prefix(&rt->rt6i_src.addr, &cfg->fc_src, cfg->fc_src_len);
@@ -3626,10 +3643,12 @@ struct rt6_info *addrconf_dst_alloc(struct net *net, 
	if (!rt)

		return ERR_PTR(-ENOMEM);



	rt->dst_nocount = true;



	in6_dev_hold(idev);

	rt->rt6i_idev = idev;



	rt->dst.flags |= DST_HOST;

	rt->dst_host = true;

	rt->rt6i_protocol = RTPROT_KERNEL;

	rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;

	if (anycast) {