rtnl: make ifla_policy static

The only place this is used outside rtnetlink.c is veth. So provide
wrapper function for this usage.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 91c33c1..34b5263 100644 (file)
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -14,6 +14,7 @@
 #include <linux/etherdevice.h>
 #include <linux/u64_stats_sync.h>
 
+#include <net/rtnetlink.h>
 #include <net/dst.h>
 #include <net/xfrm.h>
 #include <linux/veth.h>
@@ -323,10 +324,9 @@ static int veth_newlink(struct net *src_net, struct net_device *dev,
 
                nla_peer = data[VETH_INFO_PEER];
                ifmp = nla_data(nla_peer);
-               err = nla_parse(peer_tb, IFLA_MAX,
-                               nla_data(nla_peer) + sizeof(struct ifinfomsg),
-                               nla_len(nla_peer) - sizeof(struct ifinfomsg),
-                               ifla_policy);
+               err = rtnl_nla_parse_ifla(peer_tb,
+                                         nla_data(nla_peer) + sizeof(struct ifinfomsg),
+                                         nla_len(nla_peer) - sizeof(struct ifinfomsg));
                if (err < 0)
                        return err;
 

diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 661e45d..72240e5 100644 (file)
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -140,7 +140,7 @@ struct net_device *rtnl_create_link(struct net *net, char *ifname,
                                    struct nlattr *tb[]);
 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
 
-extern const struct nla_policy ifla_policy[IFLA_MAX+1];
+int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
 
 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
 

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 048dc8d..7b2ad56 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1121,56 +1121,7 @@ nla_put_failure:
        return -EMSGSIZE;
 }
 
-static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
-{
-       struct net *net = sock_net(skb->sk);
-       int h, s_h;
-       int idx = 0, s_idx;
-       struct net_device *dev;
-       struct hlist_head *head;
-       struct nlattr *tb[IFLA_MAX+1];
-       u32 ext_filter_mask = 0;
-
-       s_h = cb->args[0];
-       s_idx = cb->args[1];
-
-       rcu_read_lock();
-       cb->seq = net->dev_base_seq;
-
-       if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
-                       ifla_policy) >= 0) {
-
-               if (tb[IFLA_EXT_MASK])
-                       ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
-       }
-
-       for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
-               idx = 0;
-               head = &net->dev_index_head[h];
-               hlist_for_each_entry_rcu(dev, head, index_hlist) {
-                       if (idx < s_idx)
-                               goto cont;
-                       if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
-                                            NETLINK_CB(cb->skb).portid,
-                                            cb->nlh->nlmsg_seq, 0,
-                                            NLM_F_MULTI,
-                                            ext_filter_mask) <= 0)
-                               goto out;
-
-                       nl_dump_check_consistent(cb, nlmsg_hdr(skb));
-cont:
-                       idx++;
-               }
-       }
-out:
-       rcu_read_unlock();
-       cb->args[1] = idx;
-       cb->args[0] = h;
-
-       return skb->len;
-}
-
-const struct nla_policy ifla_policy[IFLA_MAX+1] = {
+static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
        [IFLA_IFNAME]           = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
        [IFLA_ADDRESS]          = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
        [IFLA_BROADCAST]        = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
@@ -1197,7 +1148,6 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
        [IFLA_NUM_RX_QUEUES]    = { .type = NLA_U32 },
        [IFLA_PHYS_PORT_ID]     = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
 };
-EXPORT_SYMBOL(ifla_policy);
 
 static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
        [IFLA_INFO_KIND]        = { .type = NLA_STRING },
@@ -1235,6 +1185,61 @@ static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = {
        [IFLA_PORT_RESPONSE]    = { .type = NLA_U16, },
 };
 
+static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
+{
+       struct net *net = sock_net(skb->sk);
+       int h, s_h;
+       int idx = 0, s_idx;
+       struct net_device *dev;
+       struct hlist_head *head;
+       struct nlattr *tb[IFLA_MAX+1];
+       u32 ext_filter_mask = 0;
+
+       s_h = cb->args[0];
+       s_idx = cb->args[1];
+
+       rcu_read_lock();
+       cb->seq = net->dev_base_seq;
+
+       if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
+                       ifla_policy) >= 0) {
+
+               if (tb[IFLA_EXT_MASK])
+                       ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
+       }
+
+       for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
+               idx = 0;
+               head = &net->dev_index_head[h];
+               hlist_for_each_entry_rcu(dev, head, index_hlist) {
+                       if (idx < s_idx)
+                               goto cont;
+                       if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
+                                            NETLINK_CB(cb->skb).portid,
+                                            cb->nlh->nlmsg_seq, 0,
+                                            NLM_F_MULTI,
+                                            ext_filter_mask) <= 0)
+                               goto out;
+
+                       nl_dump_check_consistent(cb, nlmsg_hdr(skb));
+cont:
+                       idx++;
+               }
+       }
+out:
+       rcu_read_unlock();
+       cb->args[1] = idx;
+       cb->args[0] = h;
+
+       return skb->len;
+}
+
+int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len)
+{
+       return nla_parse(tb, IFLA_MAX, head, len, ifla_policy);
+}
+EXPORT_SYMBOL(rtnl_nla_parse_ifla);
+
 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
 {
        struct net *net;