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Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c142
1 files changed, 79 insertions, 63 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 048dc8d..d4ff417 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -822,6 +822,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev,
+ nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
+ nla_total_size(1) /* IFLA_OPERSTATE */
+ nla_total_size(1) /* IFLA_LINKMODE */
+ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
+ nla_total_size(ext_filter_mask
& RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */
+ rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */
@@ -970,7 +971,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
(dev->qdisc &&
nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) ||
(dev->ifalias &&
- nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)))
+ nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
+ nla_put_u32(skb, IFLA_CARRIER_CHANGES,
+ atomic_read(&dev->carrier_changes)))
goto nla_put_failure;
if (1) {
@@ -1121,56 +1124,7 @@ 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 },
@@ -1196,8 +1150,8 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
[IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
[IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
+ [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */
};
-EXPORT_SYMBOL(ifla_policy);
static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
[IFLA_INFO_KIND] = { .type = NLA_STRING },
@@ -1235,6 +1189,61 @@ 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;
@@ -1963,16 +1972,21 @@ replay:
dev->ifindex = ifm->ifi_index;
- if (ops->newlink)
+ if (ops->newlink) {
err = ops->newlink(net, dev, tb, data);
- else
+ /* Drivers should call free_netdev() in ->destructor
+ * and unregister it on failure so that device could be
+ * finally freed in rtnl_unlock.
+ */
+ if (err < 0)
+ goto out;
+ } else {
err = register_netdevice(dev);
-
- if (err < 0) {
- free_netdev(dev);
- goto out;
+ if (err < 0) {
+ free_netdev(dev);
+ goto out;
+ }
}
-
err = rtnl_configure_link(dev, ifm);
if (err < 0)
unregister_netdevice(dev);
@@ -2116,12 +2130,13 @@ EXPORT_SYMBOL(rtmsg_ifinfo);
static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
struct net_device *dev,
u8 *addr, u32 pid, u32 seq,
- int type, unsigned int flags)
+ int type, unsigned int flags,
+ int nlflags)
{
struct nlmsghdr *nlh;
struct ndmsg *ndm;
- nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), NLM_F_MULTI);
+ nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags);
if (!nlh)
return -EMSGSIZE;
@@ -2159,7 +2174,7 @@ static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type)
if (!skb)
goto errout;
- err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF);
+ err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0);
if (err < 0) {
kfree_skb(skb);
goto errout;
@@ -2384,7 +2399,8 @@ static int nlmsg_populate_fdb(struct sk_buff *skb,
err = nlmsg_populate_fdb_fill(skb, dev, ha->addr,
portid, seq,
- RTM_NEWNEIGH, NTF_SELF);
+ RTM_NEWNEIGH, NTF_SELF,
+ NLM_F_MULTI);
if (err < 0)
return err;
skip:
generated by cgit v0.10.2 at 2024-07-24 09:33:28 (GMT)