diff options
Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r-- | net/core/rtnetlink.c | 138 |
1 files changed, 92 insertions, 46 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 446cbaf..5dad4f7 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -50,6 +50,7 @@ #include <net/arp.h> #include <net/route.h> #include <net/udp.h> +#include <net/tcp.h> #include <net/sock.h> #include <net/pkt_sched.h> #include <net/fib_rules.h> @@ -669,9 +670,19 @@ int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) for (i = 0; i < RTAX_MAX; i++) { if (metrics[i]) { + if (i == RTAX_CC_ALGO - 1) { + char tmp[TCP_CA_NAME_MAX], *name; + + name = tcp_ca_get_name_by_key(metrics[i], tmp); + if (!name) + continue; + if (nla_put_string(skb, i + 1, name)) + goto nla_put_failure; + } else { + if (nla_put_u32(skb, i + 1, metrics[i])) + goto nla_put_failure; + } valid++; - if (nla_put_u32(skb, i+1, metrics[i])) - goto nla_put_failure; } } @@ -864,6 +875,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(1) /* IFLA_OPERSTATE */ + nla_total_size(1) /* IFLA_LINKMODE */ + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ + + nla_total_size(4) /* IFLA_LINK_NETNSID */ + nla_total_size(ext_filter_mask & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ @@ -1158,6 +1170,18 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, goto nla_put_failure; } + if (dev->rtnl_link_ops && + dev->rtnl_link_ops->get_link_net) { + struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); + + if (!net_eq(dev_net(dev), link_net)) { + int id = peernet2id(dev_net(dev), link_net); + + if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) + goto nla_put_failure; + } + } + if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) goto nla_put_failure; @@ -1188,7 +1212,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, nla_nest_end(skb, af_spec); - return nlmsg_end(skb, nlh); + nlmsg_end(skb, nlh); + return 0; nla_put_failure: nlmsg_cancel(skb, nlh); @@ -1223,6 +1248,7 @@ static const struct nla_policy ifla_policy[IFLA_MAX+1] = { [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, + [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, }; static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { @@ -1315,7 +1341,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) */ WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); - if (err <= 0) + if (err < 0) goto out; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); @@ -1996,7 +2022,7 @@ replay: struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0]; struct nlattr **data = NULL; struct nlattr **slave_data = NULL; - struct net *dest_net; + struct net *dest_net, *link_net = NULL; if (ops) { if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { @@ -2102,7 +2128,18 @@ replay: if (IS_ERR(dest_net)) return PTR_ERR(dest_net); - dev = rtnl_create_link(dest_net, ifname, name_assign_type, ops, tb); + if (tb[IFLA_LINK_NETNSID]) { + int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); + + link_net = get_net_ns_by_id(dest_net, id); + if (!link_net) { + err = -EINVAL; + goto out; + } + } + + dev = rtnl_create_link(link_net ? : dest_net, ifname, + name_assign_type, ops, tb); if (IS_ERR(dev)) { err = PTR_ERR(dev); goto out; @@ -2111,7 +2148,7 @@ replay: dev->ifindex = ifm->ifi_index; if (ops->newlink) { - err = ops->newlink(net, dev, tb, data); + err = ops->newlink(link_net ? : net, dev, tb, data); /* Drivers should call free_netdev() in ->destructor * and unregister it on failure after registration * so that device could be finally freed in rtnl_unlock. @@ -2130,9 +2167,19 @@ replay: } } err = rtnl_configure_link(dev, ifm); - if (err < 0) + if (err < 0) { unregister_netdevice(dev); + goto out; + } + + if (link_net) { + err = dev_change_net_namespace(dev, dest_net, ifname); + if (err < 0) + unregister_netdevice(dev); + } out: + if (link_net) + put_net(link_net); put_net(dest_net); return err; } @@ -2315,7 +2362,8 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb, if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) goto nla_put_failure; - return nlmsg_end(skb, nlh); + nlmsg_end(skb, nlh); + return 0; nla_put_failure: nlmsg_cancel(skb, nlh); @@ -2698,10 +2746,11 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) idx); } - idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx); if (dev->netdev_ops->ndo_fdb_dump) - idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, bdev, dev, + idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL, idx); + else + idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx); cops = NULL; } @@ -2797,7 +2846,8 @@ int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, nla_nest_end(skb, protinfo); - return nlmsg_end(skb, nlh); + nlmsg_end(skb, nlh); + return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; @@ -2868,32 +2918,24 @@ static inline size_t bridge_nlmsg_size(void) + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ } -static int rtnl_bridge_notify(struct net_device *dev, u16 flags) +static int rtnl_bridge_notify(struct net_device *dev) { struct net *net = dev_net(dev); - struct net_device *br_dev = netdev_master_upper_dev_get(dev); struct sk_buff *skb; int err = -EOPNOTSUPP; + if (!dev->netdev_ops->ndo_bridge_getlink) + return 0; + skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); if (!skb) { err = -ENOMEM; goto errout; } - if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && - br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { - err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); - if (err < 0) - goto errout; - } - - if ((flags & BRIDGE_FLAGS_SELF) && - dev->netdev_ops->ndo_bridge_getlink) { - err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); - if (err < 0) - goto errout; - } + err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); + if (err < 0) + goto errout; if (!skb->len) goto errout; @@ -2915,7 +2957,7 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) struct net_device *dev; struct nlattr *br_spec, *attr = NULL; int rem, err = -EOPNOTSUPP; - u16 oflags, flags = 0; + u16 flags = 0; bool have_flags = false; if (nlmsg_len(nlh) < sizeof(*ifm)) @@ -2945,8 +2987,6 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) } } - oflags = flags; - if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); @@ -2955,7 +2995,7 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) goto out; } - err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); + err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags); if (err) goto out; @@ -2966,17 +3006,20 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) if (!dev->netdev_ops->ndo_bridge_setlink) err = -EOPNOTSUPP; else - err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); - - if (!err) + err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, + flags); + if (!err) { flags &= ~BRIDGE_FLAGS_SELF; + + /* Generate event to notify upper layer of bridge + * change + */ + err = rtnl_bridge_notify(dev); + } } if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); - /* Generate event to notify upper layer of bridge change */ - if (!err) - err = rtnl_bridge_notify(dev, oflags); out: return err; } @@ -2988,7 +3031,7 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) struct net_device *dev; struct nlattr *br_spec, *attr = NULL; int rem, err = -EOPNOTSUPP; - u16 oflags, flags = 0; + u16 flags = 0; bool have_flags = false; if (nlmsg_len(nlh) < sizeof(*ifm)) @@ -3018,8 +3061,6 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) } } - oflags = flags; - if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { struct net_device *br_dev = netdev_master_upper_dev_get(dev); @@ -3028,7 +3069,7 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) goto out; } - err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); + err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); if (err) goto out; @@ -3039,17 +3080,21 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) if (!dev->netdev_ops->ndo_bridge_dellink) err = -EOPNOTSUPP; else - err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); + err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, + flags); - if (!err) + if (!err) { flags &= ~BRIDGE_FLAGS_SELF; + + /* Generate event to notify upper layer of bridge + * change + */ + err = rtnl_bridge_notify(dev); + } } if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); - /* Generate event to notify upper layer of bridge change */ - if (!err) - err = rtnl_bridge_notify(dev, oflags); out: return err; } @@ -3139,6 +3184,7 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi case NETDEV_UNREGISTER_FINAL: case NETDEV_RELEASE: case NETDEV_JOIN: + case NETDEV_BONDING_INFO: break; default: rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |