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-rw-r--r--net/core/rtnetlink.c135
1 files changed, 119 insertions, 16 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 794bcb897ff..4568120d853 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -35,6 +35,7 @@
#include <linux/security.h>
#include <linux/mutex.h>
#include <linux/if_addr.h>
+#include <linux/pci.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@@ -89,6 +90,14 @@ int rtnl_is_locked(void)
}
EXPORT_SYMBOL(rtnl_is_locked);
+#ifdef CONFIG_PROVE_LOCKING
+int lockdep_rtnl_is_held(void)
+{
+ return lockdep_is_held(&rtnl_mutex);
+}
+EXPORT_SYMBOL(lockdep_rtnl_is_held);
+#endif /* #ifdef CONFIG_PROVE_LOCKING */
+
static struct rtnl_link *rtnl_msg_handlers[NPROTO];
static inline int rtm_msgindex(int msgtype)
@@ -548,6 +557,19 @@ static void set_operstate(struct net_device *dev, unsigned char transition)
}
}
+static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
+ const struct ifinfomsg *ifm)
+{
+ unsigned int flags = ifm->ifi_flags;
+
+ /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
+ if (ifm->ifi_change)
+ flags = (flags & ifm->ifi_change) |
+ (dev->flags & ~ifm->ifi_change);
+
+ return flags;
+}
+
static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
const struct net_device_stats *b)
{
@@ -580,6 +602,15 @@ static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
a->tx_compressed = b->tx_compressed;
};
+static inline int rtnl_vfinfo_size(const struct net_device *dev)
+{
+ if (dev->dev.parent && dev_is_pci(dev->dev.parent))
+ return dev_num_vf(dev->dev.parent) *
+ sizeof(struct ifla_vf_info);
+ else
+ return 0;
+}
+
static inline size_t if_nlmsg_size(const struct net_device *dev)
{
return NLMSG_ALIGN(sizeof(struct ifinfomsg))
@@ -597,6 +628,8 @@ static inline size_t if_nlmsg_size(const struct net_device *dev)
+ nla_total_size(4) /* IFLA_MASTER */
+ nla_total_size(1) /* IFLA_OPERSTATE */
+ nla_total_size(1) /* IFLA_LINKMODE */
+ + nla_total_size(4) /* IFLA_NUM_VF */
+ + nla_total_size(rtnl_vfinfo_size(dev)) /* IFLA_VFINFO */
+ rtnl_link_get_size(dev); /* IFLA_LINKINFO */
}
@@ -665,6 +698,17 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
stats = dev_get_stats(dev);
copy_rtnl_link_stats(nla_data(attr), stats);
+ if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent) {
+ int i;
+ struct ifla_vf_info ivi;
+
+ NLA_PUT_U32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent));
+ for (i = 0; i < dev_num_vf(dev->dev.parent); i++) {
+ if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
+ break;
+ NLA_PUT(skb, IFLA_VFINFO, sizeof(ivi), &ivi);
+ }
+ }
if (dev->rtnl_link_ops) {
if (rtnl_link_fill(skb, dev) < 0)
goto nla_put_failure;
@@ -725,6 +769,12 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_LINKINFO] = { .type = NLA_NESTED },
[IFLA_NET_NS_PID] = { .type = NLA_U32 },
[IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 },
+ [IFLA_VF_MAC] = { .type = NLA_BINARY,
+ .len = sizeof(struct ifla_vf_mac) },
+ [IFLA_VF_VLAN] = { .type = NLA_BINARY,
+ .len = sizeof(struct ifla_vf_vlan) },
+ [IFLA_VF_TX_RATE] = { .type = NLA_BINARY,
+ .len = sizeof(struct ifla_vf_tx_rate) },
};
EXPORT_SYMBOL(ifla_policy);
@@ -875,13 +925,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
}
if (ifm->ifi_flags || ifm->ifi_change) {
- unsigned int flags = ifm->ifi_flags;
-
- /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
- if (ifm->ifi_change)
- flags = (flags & ifm->ifi_change) |
- (dev->flags & ~ifm->ifi_change);
- err = dev_change_flags(dev, flags);
+ err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
if (err < 0)
goto errout;
}
@@ -898,6 +942,41 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
write_unlock_bh(&dev_base_lock);
}
+ if (tb[IFLA_VF_MAC]) {
+ struct ifla_vf_mac *ivm;
+ ivm = nla_data(tb[IFLA_VF_MAC]);
+ err = -EOPNOTSUPP;
+ if (ops->ndo_set_vf_mac)
+ err = ops->ndo_set_vf_mac(dev, ivm->vf, ivm->mac);
+ if (err < 0)
+ goto errout;
+ modified = 1;
+ }
+
+ if (tb[IFLA_VF_VLAN]) {
+ struct ifla_vf_vlan *ivv;
+ ivv = nla_data(tb[IFLA_VF_VLAN]);
+ err = -EOPNOTSUPP;
+ if (ops->ndo_set_vf_vlan)
+ err = ops->ndo_set_vf_vlan(dev, ivv->vf,
+ ivv->vlan,
+ ivv->qos);
+ if (err < 0)
+ goto errout;
+ modified = 1;
+ }
+ err = 0;
+
+ if (tb[IFLA_VF_TX_RATE]) {
+ struct ifla_vf_tx_rate *ivt;
+ ivt = nla_data(tb[IFLA_VF_TX_RATE]);
+ err = -EOPNOTSUPP;
+ if (ops->ndo_set_vf_tx_rate)
+ err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, ivt->rate);
+ if (err < 0)
+ goto errout;
+ modified = 1;
+ }
err = 0;
errout:
@@ -989,6 +1068,26 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
return 0;
}
+int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
+{
+ unsigned int old_flags;
+ int err;
+
+ old_flags = dev->flags;
+ if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
+ err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
+ if (err < 0)
+ return err;
+ }
+
+ dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
+ rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
+
+ __dev_notify_flags(dev, old_flags);
+ return 0;
+}
+EXPORT_SYMBOL(rtnl_configure_link);
+
struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[])
{
@@ -1010,6 +1109,7 @@ struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
dev_net_set(dev, net);
dev->rtnl_link_ops = ops;
+ dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
dev->real_num_tx_queues = real_num_queues;
if (strchr(dev->name, '%')) {
@@ -1139,7 +1239,7 @@ replay:
if (!(nlh->nlmsg_flags & NLM_F_CREATE))
return -ENODEV;
- if (ifm->ifi_index || ifm->ifi_flags || ifm->ifi_change)
+ if (ifm->ifi_index)
return -EOPNOTSUPP;
if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
return -EOPNOTSUPP;
@@ -1170,9 +1270,15 @@ replay:
err = ops->newlink(net, dev, tb, data);
else
err = register_netdevice(dev);
- if (err < 0 && !IS_ERR(dev))
+ if (err < 0 && !IS_ERR(dev)) {
free_netdev(dev);
+ goto out;
+ }
+ err = rtnl_configure_link(dev, ifm);
+ if (err < 0)
+ unregister_netdevice(dev);
+out:
put_net(dest_net);
return err;
}
@@ -1361,17 +1467,14 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi
struct net_device *dev = ptr;
switch (event) {
- case NETDEV_UNREGISTER:
- rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
- break;
case NETDEV_UP:
case NETDEV_DOWN:
- rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
- break;
+ case NETDEV_PRE_UP:
case NETDEV_POST_INIT:
case NETDEV_REGISTER:
case NETDEV_CHANGE:
case NETDEV_GOING_DOWN:
+ case NETDEV_UNREGISTER:
case NETDEV_UNREGISTER_BATCH:
break;
default:
@@ -1386,7 +1489,7 @@ static struct notifier_block rtnetlink_dev_notifier = {
};
-static int rtnetlink_net_init(struct net *net)
+static int __net_init rtnetlink_net_init(struct net *net)
{
struct sock *sk;
sk = netlink_kernel_create(net, NETLINK_ROUTE, RTNLGRP_MAX,
@@ -1397,7 +1500,7 @@ static int rtnetlink_net_init(struct net *net)
return 0;
}
-static void rtnetlink_net_exit(struct net *net)
+static void __net_exit rtnetlink_net_exit(struct net *net)
{
netlink_kernel_release(net->rtnl);
net->rtnl = NULL;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 02:32:34 +0000