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Remove DST_HOST 

Previous changes to the IP routing code have removed all the
tests for the DS_HOST route flag.
Remove the flags and all the code that sets it.

Signed-off-by: David Laight <david.laight@aculab.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Laight 2020-03-23 14:31:19 +00:00 committed by David S. Miller
parent 723d5e5b81
commit af13b3c338
8 changed files with 12 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/vrf.c
View File

@ -504,7 +504,7 @@ static void vrf_rt6_release(struct net_device *dev, struct net_vrf *vrf)
static int vrf_rt6_create(struct net_device *dev)
{
int flags = DST_HOST | DST_NOPOLICY | DST_NOXFRM;
int flags = DST_NOPOLICY | DST_NOXFRM;
struct net_vrf *vrf = netdev_priv(dev);
struct net *net = dev_net(dev);
struct rt6_info *rt6;
@ -739,7 +739,7 @@ static int vrf_rtable_create(struct net_device *dev)
return -ENOMEM;
/* create a dst for routing packets out through a VRF device */
rth = rt_dst_alloc(dev, 0, RTN_UNICAST, 1, 1, 0);
rth = rt_dst_alloc(dev, 0, RTN_UNICAST, 1, 1);
if (!rth)
return -ENOMEM;

1
include/net/dst.h
View File

@ -35,7 +35,6 @@ struct dst_entry {
int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb);
unsigned short flags;
#define DST_HOST 0x0001
#define DST_NOXFRM 0x0002
#define DST_NOPOLICY 0x0004
#define DST_NOCOUNT 0x0008

3
include/net/ip6_fib.h
View File

@ -190,11 +190,10 @@ struct fib6_info {
u8 should_flush:1,
dst_nocount:1,
dst_nopolicy:1,
dst_host:1,
fib6_destroying:1,
offload:1,
trap:1,
unused:1;
unused:2;
struct rcu_head rcu;
struct nexthop *nh;

2
include/net/route.h
View File

@ -231,7 +231,7 @@ int ip_rt_ioctl(struct net *, unsigned int cmd, struct rtentry *rt);
void ip_rt_get_source(u8 *src, struct sk_buff *skb, struct rtable *rt);
struct rtable *rt_dst_alloc(struct net_device *dev,
unsigned int flags, u16 type,
bool nopolicy, bool noxfrm, bool will_cache);
bool nopolicy, bool noxfrm);
struct rtable *rt_dst_clone(struct net_device *dev, struct rtable *rt);
struct in_ifaddr;

4
net/decnet/dn_route.c
View File

@ -1173,7 +1173,7 @@ make_route:
if (dev_out->flags & IFF_LOOPBACK)
flags |= RTCF_LOCAL;
rt = dst_alloc(&dn_dst_ops, dev_out, 0, DST_OBSOLETE_NONE, DST_HOST);
rt = dst_alloc(&dn_dst_ops, dev_out, 0, DST_OBSOLETE_NONE, 0);
if (rt == NULL)
goto e_nobufs;
@ -1439,7 +1439,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
}
make_route:
rt = dst_alloc(&dn_dst_ops, out_dev, 1, DST_OBSOLETE_NONE, DST_HOST);
rt = dst_alloc(&dn_dst_ops, out_dev, 1, DST_OBSOLETE_NONE, 0);
if (rt == NULL)
goto e_nobufs;

13
net/ipv4/route.c
View File

@ -1621,12 +1621,11 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr,
struct rtable *rt_dst_alloc(struct net_device *dev,
unsigned int flags, u16 type,
bool nopolicy, bool noxfrm, bool will_cache)
bool nopolicy, bool noxfrm)
{
struct rtable *rt;
rt = dst_alloc(&ipv4_dst_ops, dev, 1, DST_OBSOLETE_FORCE_CHK,
(will_cache ? 0 : DST_HOST) |
(nopolicy ? DST_NOPOLICY : 0) |
(noxfrm ? DST_NOXFRM : 0));
@ -1674,7 +1673,6 @@ struct rtable *rt_dst_clone(struct net_device *dev, struct rtable *rt)
new_rt->rt_gw6 = rt->rt_gw6;
INIT_LIST_HEAD(&new_rt->rt_uncached);
new_rt->dst.flags |= DST_HOST;
new_rt->dst.input = rt->dst.input;
new_rt->dst.output = rt->dst.output;
new_rt->dst.error = rt->dst.error;
@ -1734,7 +1732,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
flags |= RTCF_LOCAL;
rth = rt_dst_alloc(dev_net(dev)->loopback_dev, flags, RTN_MULTICAST,
IN_DEV_CONF_GET(in_dev, NOPOLICY), false, false);
IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
if (!rth)
return -ENOBUFS;
@ -1851,7 +1849,7 @@ static int __mkroute_input(struct sk_buff *skb,
rth = rt_dst_alloc(out_dev->dev, 0, res->type,
IN_DEV_CONF_GET(in_dev, NOPOLICY),
IN_DEV_CONF_GET(out_dev, NOXFRM), do_cache);
IN_DEV_CONF_GET(out_dev, NOXFRM));
if (!rth) {
err = -ENOBUFS;
goto cleanup;
@ -2219,7 +2217,7 @@ local_input:
rth = rt_dst_alloc(l3mdev_master_dev_rcu(dev) ? : net->loopback_dev,
flags | RTCF_LOCAL, res->type,
IN_DEV_CONF_GET(in_dev, NOPOLICY), false, do_cache);
IN_DEV_CONF_GET(in_dev, NOPOLICY), false);
if (!rth)
goto e_nobufs;
@ -2443,8 +2441,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
add:
rth = rt_dst_alloc(dev_out, flags, type,
IN_DEV_CONF_GET(in_dev, NOPOLICY),
IN_DEV_CONF_GET(in_dev, NOXFRM),
do_cache);
IN_DEV_CONF_GET(in_dev, NOXFRM));
if (!rth)
return ERR_PTR(-ENOBUFS);

6
net/ipv6/route.c
View File

@ -1062,8 +1062,6 @@ static unsigned short fib6_info_dst_flags(struct fib6_info *rt)
flags |= DST_NOCOUNT;
if (rt->dst_nopolicy)
flags |= DST_NOPOLICY;
if (rt->dst_host)
flags |= DST_HOST;
return flags;
}
@ -1349,7 +1347,6 @@ static struct rt6_info *ip6_rt_cache_alloc(const struct fib6_result *res,
ip6_rt_copy_init(rt, res);
rt->rt6i_flags |= RTF_CACHE;
rt->dst.flags |= DST_HOST;
rt->rt6i_dst.addr = *daddr;
rt->rt6i_dst.plen = 128;
@ -3142,7 +3139,6 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
goto out;
}
rt->dst.flags |= DST_HOST;
rt->dst.input = ip6_input;
rt->dst.output = ip6_output;
rt->rt6i_gateway = fl6->daddr;
@ -3645,8 +3641,6 @@ static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
ipv6_addr_prefix(&rt->fib6_dst.addr, &cfg->fc_dst, cfg->fc_dst_len);
rt->fib6_dst.plen = cfg->fc_dst_len;
if (rt->fib6_dst.plen == 128)
rt->dst_host = true;
#ifdef CONFIG_IPV6_SUBTREES
ipv6_addr_prefix(&rt->fib6_src.addr, &cfg->fc_src, cfg->fc_src_len);

3
net/xfrm/xfrm_policy.c
View File

@ -2613,7 +2613,6 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
xdst->xfrm_genid = xfrm[i]->genid;
dst1->obsolete = DST_OBSOLETE_FORCE_CHK;
dst1->flags |= DST_HOST;
dst1->lastuse = now;
dst1->input = dst_discard;
@ -2899,7 +2898,7 @@ static struct xfrm_dst *xfrm_create_dummy_bundle(struct net *net,
dst_copy_metrics(dst1, dst);
dst1->obsolete = DST_OBSOLETE_FORCE_CHK;
dst1->flags |= DST_HOST | DST_XFRM_QUEUE;
dst1->flags |= DST_XFRM_QUEUE;
dst1->lastuse = jiffies;
dst1->input = dst_discard;