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Diffstat (limited to 'net/core/neighbour.c')
-rw-r--r--net/core/neighbour.c43
1 files changed, 30 insertions, 13 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 30f6fd8f68e0..dfa871061f14 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -31,6 +31,7 @@
#include <linux/times.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
+#include <net/arp.h>
#include <net/dst.h>
#include <net/sock.h>
#include <net/netevent.h>
@@ -663,6 +664,8 @@ out:
out_tbl_unlock:
write_unlock_bh(&tbl->lock);
out_neigh_release:
+ if (!exempt_from_gc)
+ atomic_dec(&tbl->gc_entries);
neigh_release(n);
goto out;
}
@@ -1862,7 +1865,8 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
ASSERT_RTNL();
- err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, nda_policy, extack);
+ err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX,
+ nda_policy, extack);
if (err < 0)
goto out;
@@ -1920,6 +1924,11 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh,
goto out;
}
+ if (tbl->allow_add && !tbl->allow_add(dev, extack)) {
+ err = -EINVAL;
+ goto out;
+ }
+
neigh = neigh_lookup(tbl, dst, dev);
if (neigh == NULL) {
bool exempt_from_gc;
@@ -1974,7 +1983,7 @@ static int neightbl_fill_parms(struct sk_buff *skb, struct neigh_parms *parms)
{
struct nlattr *nest;
- nest = nla_nest_start(skb, NDTA_PARMS);
+ nest = nla_nest_start_noflag(skb, NDTA_PARMS);
if (nest == NULL)
return -ENOBUFS;
@@ -2176,8 +2185,8 @@ static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh,
bool found = false;
int err, tidx;
- err = nlmsg_parse(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
- nl_neightbl_policy, extack);
+ err = nlmsg_parse_deprecated(nlh, sizeof(*ndtmsg), tb, NDTA_MAX,
+ nl_neightbl_policy, extack);
if (err < 0)
goto errout;
@@ -2214,8 +2223,9 @@ static int neightbl_set(struct sk_buff *skb, struct nlmsghdr *nlh,
struct neigh_parms *p;
int i, ifindex = 0;
- err = nla_parse_nested(tbp, NDTPA_MAX, tb[NDTA_PARMS],
- nl_ntbl_parm_policy, extack);
+ err = nla_parse_nested_deprecated(tbp, NDTPA_MAX,
+ tb[NDTA_PARMS],
+ nl_ntbl_parm_policy, extack);
if (err < 0)
goto errout_tbl_lock;
@@ -2655,11 +2665,12 @@ static int neigh_valid_dump_req(const struct nlmsghdr *nlh,
return -EINVAL;
}
- err = nlmsg_parse_strict(nlh, sizeof(struct ndmsg), tb, NDA_MAX,
- nda_policy, extack);
+ err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg),
+ tb, NDA_MAX, nda_policy,
+ extack);
} else {
- err = nlmsg_parse(nlh, sizeof(struct ndmsg), tb, NDA_MAX,
- nda_policy, extack);
+ err = nlmsg_parse_deprecated(nlh, sizeof(struct ndmsg), tb,
+ NDA_MAX, nda_policy, extack);
}
if (err < 0)
return err;
@@ -2759,8 +2770,8 @@ static int neigh_valid_get_req(const struct nlmsghdr *nlh,
return -EINVAL;
}
- err = nlmsg_parse_strict(nlh, sizeof(struct ndmsg), tb, NDA_MAX,
- nda_policy, extack);
+ err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb,
+ NDA_MAX, nda_policy, extack);
if (err < 0)
return err;
@@ -2982,7 +2993,13 @@ int neigh_xmit(int index, struct net_device *dev,
if (!tbl)
goto out;
rcu_read_lock_bh();
- neigh = __neigh_lookup_noref(tbl, addr, dev);
+ if (index == NEIGH_ARP_TABLE) {
+ u32 key = *((u32 *)addr);
+
+ neigh = __ipv4_neigh_lookup_noref(dev, key);
+ } else {
+ neigh = __neigh_lookup_noref(tbl, addr, dev);
+ }
if (!neigh)
neigh = __neigh_create(tbl, addr, dev, false);
err = PTR_ERR(neigh);