diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 21:08:52 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 21:08:52 (GMT) |
commit | 73287a43cc79ca06629a88d1a199cd283f42456a (patch) | |
tree | acf4456e260115bea77ee31a29f10ce17f0db45c /net/core/rtnetlink.c | |
parent | 251df49db3327c64bf917bfdba94491fde2b4ee0 (diff) | |
parent | 20074f357da4a637430aec2879c9d864c5d2c23c (diff) | |
download | linux-fsl-qoriq-73287a43cc79ca06629a88d1a199cd283f42456a.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights (1721 non-merge commits, this has to be a record of some
sort):
1) Add 'random' mode to team driver, from Jiri Pirko and Eric
Dumazet.
2) Make it so that any driver that supports configuration of multiple
MAC addresses can provide the forwarding database add and del
calls by providing a default implementation and hooking that up if
the driver doesn't have an explicit set of handlers. From Vlad
Yasevich.
3) Support GSO segmentation over tunnels and other encapsulating
devices such as VXLAN, from Pravin B Shelar.
4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton.
5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita
Dukkipati.
6) In the PHY layer, allow supporting wake-on-lan in situations where
the PHY registers have to be written for it to be configured.
Use it to support wake-on-lan in mv643xx_eth.
From Michael Stapelberg.
7) Significantly improve firewire IPV6 support, from YOSHIFUJI
Hideaki.
8) Allow multiple packets to be sent in a single transmission using
network coding in batman-adv, from Martin Hundebøll.
9) Add support for T5 cxgb4 chips, from Santosh Rastapur.
10) Generalize the VXLAN forwarding tables so that there is more
flexibility in configurating various aspects of the endpoints.
From David Stevens.
11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver,
from Dmitry Kravkov.
12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo
Neira Ayuso.
13) Start adding networking selftests.
14) In situations of overload on the same AF_PACKET fanout socket, or
per-cpu packet receive queue, minimize drop by distributing the
load to other cpus/fanouts. From Willem de Bruijn and Eric
Dumazet.
15) Add support for new payload offset BPF instruction, from Daniel
Borkmann.
16) Convert several drivers over to mdoule_platform_driver(), from
Sachin Kamat.
17) Provide a minimal BPF JIT image disassembler userspace tool, from
Daniel Borkmann.
18) Rewrite F-RTO implementation in TCP to match the final
specification of it in RFC4138 and RFC5682. From Yuchung Cheng.
19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear
you like netlink, so I implemented netlink dumping of netlink
sockets.") From Andrey Vagin.
20) Remove ugly passing of rtnetlink attributes into rtnl_doit
functions, from Thomas Graf.
21) Allow userspace to be able to see if a configuration change occurs
in the middle of an address or device list dump, from Nicolas
Dichtel.
22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes
Frederic Sowa.
23) Increase accuracy of packet length used by packet scheduler, from
Jason Wang.
24) Beginning set of changes to make ipv4/ipv6 fragment handling more
scalable and less susceptible to overload and locking contention,
from Jesper Dangaard Brouer.
25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*()
instead. From Hong Zhiguo.
26) Optimize route usage in IPVS by avoiding reference counting where
possible, from Julian Anastasov.
27) Convert IPVS schedulers to RCU, also from Julian Anastasov.
28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger
Eitzenberger.
29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG,
nfnetlink_log, and nfnetlink_queue. From Gao feng.
30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa.
31) Support several new r8169 chips, from Hayes Wang.
32) Support tokenized interface identifiers in ipv6, from Daniel
Borkmann.
33) Use usbnet_link_change() helper in USB net driver, from Ming Lei.
34) Add 802.1ad vlan offload support, from Patrick McHardy.
35) Support mmap() based netlink communication, also from Patrick
McHardy.
36) Support HW timestamping in mlx4 driver, from Amir Vadai.
37) Rationalize AF_PACKET packet timestamping when transmitting, from
Willem de Bruijn and Daniel Borkmann.
38) Bring parity to what's provided by /proc/net/packet socket dumping
and the info provided by netlink socket dumping of AF_PACKET
sockets. From Nicolas Dichtel.
39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin
Poirier"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
filter: fix va_list build error
af_unix: fix a fatal race with bit fields
bnx2x: Prevent memory leak when cnic is absent
bnx2x: correct reading of speed capabilities
net: sctp: attribute printl with __printf for gcc fmt checks
netlink: kconfig: move mmap i/o into netlink kconfig
netpoll: convert mutex into a semaphore
netlink: Fix skb ref counting.
net_sched: act_ipt forward compat with xtables
mlx4_en: fix a build error on 32bit arches
Revert "bnx2x: allow nvram test to run when device is down"
bridge: avoid OOPS if root port not found
drivers: net: cpsw: fix kernel warn on cpsw irq enable
sh_eth: use random MAC address if no valid one supplied
3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA)
tg3: fix to append hardware time stamping flags
unix/stream: fix peeking with an offset larger than data in queue
unix/dgram: fix peeking with an offset larger than data in queue
unix/dgram: peek beyond 0-sized skbs
openvswitch: Remove unneeded ovs_netdev_get_ifindex()
...
Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r-- | net/core/rtnetlink.c | 178 |
1 files changed, 93 insertions, 85 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 23854b5..a08bd2b 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -517,32 +517,6 @@ out: return err; } -static const int rtm_min[RTM_NR_FAMILIES] = -{ - [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)), - [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)), - [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)), - [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)), - [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)), - [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)), - [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)), - [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)), - [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), - [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), -}; - -static const int rta_max[RTM_NR_FAMILIES] = -{ - [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX, - [RTM_FAM(RTM_NEWADDR)] = IFA_MAX, - [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX, - [RTM_FAM(RTM_NEWRULE)] = FRA_MAX, - [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX, - [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX, - [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX, - [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX, -}; - int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) { struct sock *rtnl = net->rtnl; @@ -1539,7 +1513,7 @@ errout: return err; } -static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; @@ -1580,7 +1554,7 @@ errout: return err; } -static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); const struct rtnl_link_ops *ops; @@ -1711,7 +1685,7 @@ static int rtnl_group_changelink(struct net *net, int group, return 0; } -static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); const struct rtnl_link_ops *ops; @@ -1866,7 +1840,7 @@ out: } } -static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) +static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; @@ -1957,8 +1931,11 @@ static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) if (rtnl_msg_handlers[idx] == NULL || rtnl_msg_handlers[idx][type].dumpit == NULL) continue; - if (idx > s_idx) + if (idx > s_idx) { memset(&cb->args[0], 0, sizeof(cb->args)); + cb->prev_seq = 0; + cb->seq = 0; + } if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) break; } @@ -2051,7 +2028,39 @@ errout: rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); } -static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +/** + * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry + */ +int ndo_dflt_fdb_add(struct ndmsg *ndm, + struct nlattr *tb[], + struct net_device *dev, + const unsigned char *addr, + u16 flags) +{ + int err = -EINVAL; + + /* If aging addresses are supported device will need to + * implement its own handler for this. + */ + if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { + pr_info("%s: FDB only supports static addresses\n", dev->name); + return err; + } + + if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) + err = dev_uc_add_excl(dev, addr); + else if (is_multicast_ether_addr(addr)) + err = dev_mc_add_excl(dev, addr); + + /* Only return duplicate errors if NLM_F_EXCL is set */ + if (err == -EEXIST && !(flags & NLM_F_EXCL)) + err = 0; + + return err; +} +EXPORT_SYMBOL(ndo_dflt_fdb_add); + +static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ndmsg *ndm; @@ -2082,7 +2091,7 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) } addr = nla_data(tb[NDA_LLADDR]); - if (!is_valid_ether_addr(addr)) { + if (is_zero_ether_addr(addr)) { pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ether address\n"); return -EINVAL; } @@ -2103,10 +2112,13 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) } /* Embedded bridge, macvlan, and any other device support */ - if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_add) { - err = dev->netdev_ops->ndo_fdb_add(ndm, tb, - dev, addr, - nlh->nlmsg_flags); + if ((ndm->ndm_flags & NTF_SELF)) { + if (dev->netdev_ops->ndo_fdb_add) + err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, + nlh->nlmsg_flags); + else + err = ndo_dflt_fdb_add(ndm, tb, dev, addr, + nlh->nlmsg_flags); if (!err) { rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); @@ -2117,7 +2129,36 @@ out: return err; } -static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +/** + * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry + */ +int ndo_dflt_fdb_del(struct ndmsg *ndm, + struct nlattr *tb[], + struct net_device *dev, + const unsigned char *addr) +{ + int err = -EOPNOTSUPP; + + /* If aging addresses are supported device will need to + * implement its own handler for this. + */ + if (ndm->ndm_state & NUD_PERMANENT) { + pr_info("%s: FDB only supports static addresses\n", dev->name); + return -EINVAL; + } + + if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) + err = dev_uc_del(dev, addr); + else if (is_multicast_ether_addr(addr)) + err = dev_mc_del(dev, addr); + else + err = -EINVAL; + + return err; +} +EXPORT_SYMBOL(ndo_dflt_fdb_del); + +static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ndmsg *ndm; @@ -2151,7 +2192,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) } addr = nla_data(tb[NDA_LLADDR]); - if (!is_valid_ether_addr(addr)) { + if (is_zero_ether_addr(addr)) { pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ether address\n"); return -EINVAL; } @@ -2174,8 +2215,11 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) } /* Embedded bridge, macvlan, and any other device support */ - if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_del) { - err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); + if (ndm->ndm_flags & NTF_SELF) { + if (dev->netdev_ops->ndo_fdb_del) + err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); + else + err = ndo_dflt_fdb_del(ndm, tb, dev, addr); if (!err) { rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); @@ -2220,7 +2264,7 @@ skip: * @dev: netdevice * * Default netdevice operation to dump the existing unicast address list. - * Returns zero on success. + * Returns number of addresses from list put in skb. */ int ndo_dflt_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, @@ -2260,6 +2304,8 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) if (dev->netdev_ops->ndo_fdb_dump) idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); + else + idx = ndo_dflt_fdb_dump(skb, cb, dev, idx); } rcu_read_unlock(); @@ -2411,8 +2457,7 @@ errout: return err; } -static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, - void *arg) +static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; @@ -2482,8 +2527,7 @@ out: return err; } -static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, - void *arg) +static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct ifinfomsg *ifm; @@ -2553,10 +2597,6 @@ out: return err; } -/* Protected by RTNL sempahore. */ -static struct rtattr **rta_buf; -static int rtattr_max; - /* Process one rtnetlink message. */ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) @@ -2564,7 +2604,6 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) struct net *net = sock_net(skb->sk); rtnl_doit_func doit; int sz_idx, kind; - int min_len; int family; int type; int err; @@ -2576,10 +2615,10 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) type -= RTM_BASE; /* All the messages must have at least 1 byte length */ - if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg))) + if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) return 0; - family = ((struct rtgenmsg *)NLMSG_DATA(nlh))->rtgen_family; + family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; sz_idx = type>>2; kind = type&3; @@ -2612,32 +2651,11 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) return err; } - memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *))); - - min_len = rtm_min[sz_idx]; - if (nlh->nlmsg_len < min_len) - return -EINVAL; - - if (nlh->nlmsg_len > min_len) { - int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len); - struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); - - while (RTA_OK(attr, attrlen)) { - unsigned int flavor = attr->rta_type & NLA_TYPE_MASK; - if (flavor) { - if (flavor > rta_max[sz_idx]) - return -EINVAL; - rta_buf[flavor-1] = attr; - } - attr = RTA_NEXT(attr, attrlen); - } - } - doit = rtnl_get_doit(family, type); if (doit == NULL) return -EOPNOTSUPP; - return doit(skb, nlh, (void *)&rta_buf[0]); + return doit(skb, nlh); } static void rtnetlink_rcv(struct sk_buff *skb) @@ -2707,16 +2725,6 @@ static struct pernet_operations rtnetlink_net_ops = { void __init rtnetlink_init(void) { - int i; - - rtattr_max = 0; - for (i = 0; i < ARRAY_SIZE(rta_max); i++) - if (rta_max[i] > rtattr_max) - rtattr_max = rta_max[i]; - rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL); - if (!rta_buf) - panic("rtnetlink_init: cannot allocate rta_buf\n"); - if (register_pernet_subsys(&rtnetlink_net_ops)) panic("rtnetlink_init: cannot initialize rtnetlink\n"); |