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* Merge branch 'master' of git://1984.lsi.us.es/nf-nextDavid S. Miller2013-04-071-4/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== The following patchset contains Netfilter and IPVS updates for your net-next tree, most relevantly they are: * Add net namespace support to NFLOG, ULOG and ebt_ulog and NFQUEUE. The LOG and ebt_log target has been also adapted, but they still depend on the syslog netnamespace that seems to be missing, from Gao Feng. * Don't lose indications of congestion in IPv6 fragmentation handling, from Hannes Frederic Sowa.i * IPVS conversion to use RCU, including some code consolidation patches and optimizations, also some from Julian Anastasov. * cpu fanout support for NFQUEUE, from Holger Eitzenberger. * Better error reporting to userspace when dropping packets from all our _*_[xfrm|route]_me_harder functions, from Patrick McHardy. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: add skb_dst_set_noref_forceJulian Anastasov2013-04-021-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Rename skb_dst_set_noref to __skb_dst_set_noref and add force flag as suggested by David Miller. The new wrapper skb_dst_set_noref_force will force dst entries that are not cached to be attached as skb dst without taking reference as long as provided dst is reclaimed after RCU grace period. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Simon Horman <horms@verge.net.au>
* | net: fix smatch warnings inside datagram_pollJacob Keller2013-04-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Commit 7d4c04fc170087119727119074e72445f2bb192b ("net: add option to enable error queue packets waking select") has an issue due to operator precedence causing the bit-wise OR to bind to the sock_flags call instead of the result of the terniary conditional. This fixes the *_poll functions to work properly. The old code results in "mask |= POLLPRI" instead of what was intended, which is to only include POLLPRI when the socket option is enabled. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-04-014-4/+13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: net/mac80211/sta_info.c net/wireless/core.h Two minor conflicts in wireless. Overlapping additions of extern declarations in net/wireless/core.h and a bug fix overlapping with the addition of a boolean parameter to __ieee80211_key_free(). Signed-off-by: David S. Miller <davem@davemloft.net>
| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2013-04-013-3/+10
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) sadb_msg prepared for IPSEC userspace forgets to initialize the satype field, fix from Nicolas Dichtel. 2) Fix mac80211 synchronization during station removal, from Johannes Berg. 3) Fix IPSEC sequence number notifications when they wrap, from Steffen Klassert. 4) Fix cfg80211 wdev tracing crashes when add_virtual_intf() returns an error pointer, from Johannes Berg. 5) In mac80211, don't call into the channel context code with the interface list mutex held. From Johannes Berg. 6) In mac80211, if we don't actually associate, do not restart the STA timer, otherwise we can crash. From Ben Greear. 7) Missing dma_mapping_error() check in e1000, ixgb, and e1000e. From Christoph Paasch. 8) Fix sja1000 driver defines to not conflict with SH port, from Marc Kleine-Budde. 9) Don't call il4965_rs_use_green with a NULL station, from Colin Ian King. 10) Suspend/Resume in the FEC driver fail because the buffer descriptors are not initialized at all the moments in which they should. Fix from Frank Li. 11) cpsw and davinci_emac drivers both use the wrong interface to restart a stopped TX queue. Use netif_wake_queue not netif_start_queue, the latter is for initialization/bringup not active management of the queue. From Mugunthan V N. 12) Fix regression in rate calculations done by psched_ratecfg_precompute(), missing u64 type promotion. From Sergey Popovich. 13) Fix length overflow in tg3 VPD parsing, from Kees Cook. 14) AOE driver fails to allocate enough headroom, resulting in crashes. Fix from Eric Dumazet. 15) RX overflow happens too quickly in sky2 driver because pause packet thresholds are not programmed correctly. From Mirko Lindner. 16) Bonding driver manages arp_interval and miimon settings incorrectly, disabling one unintentionally disables both. Fix from Nikolay Aleksandrov. 17) smsc75xx drivers don't program the RX mac properly for jumbo frames. Fix from Steve Glendinning. 18) Fix off-by-one in Codel packet scheduler. From Vijay Subramanian. 19) Fix packet corruption in atl1c by disabling MSI support, from Hannes Frederic Sowa. 20) netdev_rx_handler_unregister() needs a synchronize_net() to fix crashes in bonding driver unload stress tests. From Eric Dumazet. 21) rxlen field of ks8851 RX packet descriptors not interpreted correctly (it is 12 bits not 16 bits, so needs to be masked after shifting the 32-bit value down 16 bits). Fix from Max Nekludov. 22) Fix missed RX/TX enable in sh_eth driver due to mishandling of link change indications. From Sergei Shtylyov. 23) Fix crashes during spurious ECI interrupts in sh_eth driver, also from Sergei Shtylyov. 24) dm9000 driver initialization is done wrong for revision B devices with DSP PHY, from Joseph CHANG. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (53 commits) DM9000B: driver initialization upgrade sh_eth: make 'link' field of 'struct sh_eth_private' *int* sh_eth: workaround for spurious ECI interrupt sh_eth: fix handling of no LINK signal ks8851: Fix interpretation of rxlen field. net: add a synchronize_net() in netdev_rx_handler_unregister() MAINTAINERS: Update netxen_nic maintainers list atl1e: drop pci-msi support because of packet corruption net: fq_codel: Fix off-by-one error net: calxedaxgmac: Wake-on-LAN fixes net: calxedaxgmac: fix rx ring handling when OOM net: core: Remove redundant call to 'nf_reset' in 'dev_forward_skb' smsc75xx: fix jumbo frame support net: fix the use of this_cpu_ptr bonding: fix disabling of arp_interval and miimon ipv6: don't accept node local multicast traffic from the wire sky2: Threshold for Pause Packet is set wrong sky2: Receive Overflows not counted aoe: reserve enough headroom on skbs line up comment for ndo_bridge_getlink ...
| | * | net: add a synchronize_net() in netdev_rx_handler_unregister()Eric Dumazet2013-03-291-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 35d48903e97819 (bonding: fix rx_handler locking) added a race in bonding driver, reported by Steven Rostedt who did a very good diagnosis : <quoting Steven> I'm currently debugging a crash in an old 3.0-rt kernel that one of our customers is seeing. The bug happens with a stress test that loads and unloads the bonding module in a loop (I don't know all the details as I'm not the one that is directly interacting with the customer). But the bug looks to be something that may still be present and possibly present in mainline too. It will just be much harder to trigger it in mainline. In -rt, interrupts are threads, and can schedule in and out just like any other thread. Note, mainline now supports interrupt threads so this may be easily reproducible in mainline as well. I don't have the ability to tell the customer to try mainline or other kernels, so my hands are somewhat tied to what I can do. But according to a core dump, I tracked down that the eth irq thread crashed in bond_handle_frame() here: slave = bond_slave_get_rcu(skb->dev); bond = slave->bond; <--- BUG the slave returned was NULL and accessing slave->bond caused a NULL pointer dereference. Looking at the code that unregisters the handler: void netdev_rx_handler_unregister(struct net_device *dev) { ASSERT_RTNL(); RCU_INIT_POINTER(dev->rx_handler, NULL); RCU_INIT_POINTER(dev->rx_handler_data, NULL); } Which is basically: dev->rx_handler = NULL; dev->rx_handler_data = NULL; And looking at __netif_receive_skb() we have: rx_handler = rcu_dereference(skb->dev->rx_handler); if (rx_handler) { if (pt_prev) { ret = deliver_skb(skb, pt_prev, orig_dev); pt_prev = NULL; } switch (rx_handler(&skb)) { My question to all of you is, what stops this interrupt from happening while the bonding module is unloading? What happens if the interrupt triggers and we have this: CPU0 CPU1 ---- ---- rx_handler = skb->dev->rx_handler netdev_rx_handler_unregister() { dev->rx_handler = NULL; dev->rx_handler_data = NULL; rx_handler() bond_handle_frame() { slave = skb->dev->rx_handler; bond = slave->bond; <-- NULL pointer dereference!!! What protection am I missing in the bond release handler that would prevent the above from happening? </quoting Steven> We can fix bug this in two ways. First is adding a test in bond_handle_frame() and others to check if rx_handler_data is NULL. A second way is adding a synchronize_net() in netdev_rx_handler_unregister() to make sure that a rcu protected reader has the guarantee to see a non NULL rx_handler_data. The second way is better as it avoids an extra test in fast path. Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jiri Pirko <jpirko@redhat.com> Cc: Paul E. McKenney <paulmck@us.ibm.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | net: core: Remove redundant call to 'nf_reset' in 'dev_forward_skb'Shmulik Ladkani2013-03-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'nf_reset' is called just prior calling 'netif_rx'. No need to call it twice. Reported-by: Igor Michailov <rgohita@gmail.com> Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | net: fix the use of this_cpu_ptrLi RongQing2013-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | flush_tasklet is not percpu var, and percpu is percpu var, and this_cpu_ptr(&info->cache->percpu->flush_tasklet) is not equal to &this_cpu_ptr(info->cache->percpu)->flush_tasklet 1f743b076(use this_cpu_ptr per-cpu helper) introduced this bug. Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | rtnetlink: fix error return code in rtnl_link_fill()Wei Yongjun2013-03-271-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix to return a negative error code from the error handling case instead of 0(possible overwrite to 0 by ops->fill_xstats call), as returned elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | Merge branch 'for-linus' of ↵Linus Torvalds2013-03-281-1/+3
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull userns fixes from Eric W Biederman: "The bulk of the changes are fixing the worst consequences of the user namespace design oversight in not considering what happens when one namespace starts off as a clone of another namespace, as happens with the mount namespace. The rest of the changes are just plain bug fixes. Many thanks to Andy Lutomirski for pointing out many of these issues." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: userns: Restrict when proc and sysfs can be mounted ipc: Restrict mounting the mqueue filesystem vfs: Carefully propogate mounts across user namespaces vfs: Add a mount flag to lock read only bind mounts userns: Don't allow creation if the user is chrooted yama: Better permission check for ptraceme pid: Handle the exit of a multi-threaded init. scm: Require CAP_SYS_ADMIN over the current pidns to spoof pids.
| | * | scm: Require CAP_SYS_ADMIN over the current pidns to spoof pids.Eric W. Biederman2013-03-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't allow spoofing pids over unix domain sockets in the corner cases where a user has created a user namespace but has not yet created a pid namespace. Cc: stable@vger.kernel.org Reported-by: Andy Lutomirski <luto@amacapital.net> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | | | net: add option to enable error queue packets waking selectKeller, Jacob E2013-03-312-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when a socket receives something on the error queue it only wakes up the socket on select if it is in the "read" list, that is the socket has something to read. It is useful also to wake the socket if it is in the error list, which would enable software to wait on error queue packets without waking up for regular data on the socket. The main use case is for receiving timestamped transmit packets which return the timestamp to the socket via the error queue. This enables an application to select on the socket for the error queue only instead of for the regular traffic. -v2- * Added the SO_SELECT_ERR_QUEUE socket option to every architechture specific file * Modified every socket poll function that checks error queue Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Cc: Jeffrey Kirsher <jeffrey.t.kirsher@intel.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Matthew Vick <matthew.vick@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | net: rtnetlink: fdb dflt dump must set idx used for cb->arg[0]John Fastabend2013-03-291-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In rtnl_fdb_dump() when the fdb_dump ndo op is not populated we never set the idx value so that cb->arg[0] is always 0. Resulting in a endless loop of messages. Introduced with this commit, commit 090096bf3db1c281ddd034573260045888a68fea Author: Vlad Yasevich <vyasevic@redhat.com> Date: Wed Mar 6 15:39:42 2013 +0000 net: generic fdb support for drivers without ndo_fdb_<op> CC: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | net: simplify the getting percpu of flow_cacheLi RongQing2013-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | replace per_cpu with per_cpu_ptr to save conversion between address and pointer Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | net-next: replace obsolete NLMSG_* with type safe nlmsg_*Hong zhi guo2013-03-281-2/+2
| |_|/ |/| | | | | | | | | | | Signed-off-by: Hong Zhiguo <honkiko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-03-271-1/+0
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: include/net/ipip.h The changes made to ipip.h in 'net' were already included in 'net-next' before that header was moved to another location. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net: remove a WARN_ON() in net_enable_timestamp()Eric Dumazet2013-03-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The WARN_ON(in_interrupt()) in net_enable_timestamp() can get false positive, in socket clone path, run from softirq context : [ 3641.624425] WARNING: at net/core/dev.c:1532 net_enable_timestamp+0x7b/0x80() [ 3641.668811] Call Trace: [ 3641.671254] <IRQ> [<ffffffff80286817>] warn_slowpath_common+0x87/0xc0 [ 3641.677871] [<ffffffff8028686a>] warn_slowpath_null+0x1a/0x20 [ 3641.683683] [<ffffffff80742f8b>] net_enable_timestamp+0x7b/0x80 [ 3641.689668] [<ffffffff80732ce5>] sk_clone_lock+0x425/0x450 [ 3641.695222] [<ffffffff8078db36>] inet_csk_clone_lock+0x16/0x170 [ 3641.701213] [<ffffffff807ae449>] tcp_create_openreq_child+0x29/0x820 [ 3641.707663] [<ffffffff807d62e2>] ? ipt_do_table+0x222/0x670 [ 3641.713354] [<ffffffff807aaf5b>] tcp_v4_syn_recv_sock+0xab/0x3d0 [ 3641.719425] [<ffffffff807af63a>] tcp_check_req+0x3da/0x530 [ 3641.724979] [<ffffffff8078b400>] ? inet_hashinfo_init+0x60/0x80 [ 3641.730964] [<ffffffff807ade6f>] ? tcp_v4_rcv+0x79f/0xbe0 [ 3641.736430] [<ffffffff807ab9bd>] tcp_v4_do_rcv+0x38d/0x4f0 [ 3641.741985] [<ffffffff807ae14a>] tcp_v4_rcv+0xa7a/0xbe0 Its safe at this point because the parent socket owns a reference on the netstamp_needed, so we cant have a 0 -> 1 transition, which requires to lock a mutex. Instead of refining the check, lets remove it, as all known callers are safe. If it ever changes in the future, static_key_slow_inc() will complain anyway. Reported-by: Laurent Chavey <chavey@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: core: let's use native isxdigit instead of customAndy Shevchenko2013-03-271-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | In kernel we have fast and pretty implementation of the isxdigit() function. Let's use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: core: let skb_partial_csum_set() set transport headerJason Wang2013-03-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For untrusted packets with partial checksum, we need to set the transport header for precise packet length estimation. We can just let skb_pratial_csum_set() to do this to avoid extra call to skb_flow_dissect() and simplify the caller. Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net_sched: better precise estimation on packet length for untrusted packetsJason Wang2013-03-261-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gso_segs were reset to zero when kernel receive packets from untrusted source. But we use this zero value to estimate precise packet len which is wrong. So this patch tries to estimate the correct gso_segs value before using it in qdisc_pkt_len_init(). Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: Print functions in /proc/net/ptype without the offset.David S. Miller2013-03-251-1/+1
| | | | | | | | | | | | | | | | | | It's always zero. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | ipv4: provide addr and netconf dump consistency infoNicolas Dichtel2013-03-241-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch takes benefit of dev_addr_genid and dev_base_seq to check if a change occurs during a netlink dump. If a change is detected, the flag NLM_F_DUMP_INTR is set in the first message after the dump was interrupted. Note that seq and prev_seq must be reset between each family in rtnl_dump_all() because they are specific to each family. Reported-by: Junwei Zhang <junwei.zhang@6wind.com> Reported-by: Hongjun Li <hongjun.li@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | rtnetlink: Remove passing of attributes into rtnl_doit functionsThomas Graf2013-03-223-78/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With decnet converted, we can finally get rid of rta_buf and its computations around it. It also gets rid of the minimal header length verification since all message handlers do that explicitly anyway. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: remove redundant ifdef CONFIG_CGROUPSZefan Li2013-03-211-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | The cgroup code has been surrounded by ifdef CONFIG_NET_CLS_CGROUP and CONFIG_NETPRIO_CGROUP. Signed-off-by: Li Zefan <lizefan@huawei.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | dynticks: avoid flow_cache_flush() interrupting every coreChris Metcalf2013-03-201-3/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, if you did an "ifconfig down" or similar on one core, and the kernel had CONFIG_XFRM enabled, every core would be interrupted to check its percpu flow list for items that could be garbage collected. With this change, we generate a mask of cores that actually have any percpu items, and only interrupt those cores. When we are trying to isolate a set of cpus from interrupts, this is important to do. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | filter: add ANC_PAY_OFFSET instruction for loading payload start offsetDaniel Borkmann2013-03-201-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is very useful to do dynamic truncation of packets. In particular, we're interested to push the necessary header bytes to the user space and cut off user payload that should probably not be transferred for some reasons (e.g. privacy, speed, or others). With the ancillary extension PAY_OFFSET, we can load it into the accumulator, and return it. E.g. in bpfc syntax ... ld #poff ; { 0x20, 0, 0, 0xfffff034 }, ret a ; { 0x16, 0, 0, 0x00000000 }, ... as a filter will accomplish this without having to do a big hackery in a BPF filter itself. Follow-up JIT implementations are welcome. Thanks to Eric Dumazet for suggesting and discussing this during the Netfilter Workshop in Copenhagen. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net: flow_dissector: add __skb_get_poff to get a start offset to payloadDaniel Borkmann2013-03-201-0/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __skb_get_poff() returns the offset to the payload as far as it could be dissected. The main user is currently BPF, so that we can dynamically truncate packets without needing to push actual payload to the user space and instead can analyze headers only. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-03-203-2/+4
|\| | | | | | | | | | | | | | | | | | | | Pull in the 'net' tree to get Daniel Borkmann's flow dissector infrastructure change. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | flow_keys: include thoff into flow_keys for later usageDaniel Borkmann2013-03-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In skb_flow_dissect(), we perform a dissection of a skbuff. Since we're doing the work here anyway, also store thoff for a later usage, e.g. in the BPF filter. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | rtnetlink: Mask the rta_type when range checkingVlad Yasevich2013-03-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Range/validity checks on rta_type in rtnetlink_rcv_msg() do not account for flags that may be set. This causes the function to return -EINVAL when flags are set on the type (for example NLA_F_NESTED). Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | net/core: move vlan_depth out of while loop in skb_network_protocol()Li RongQing2013-03-121-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | [ Bug added added in commit 05e8ef4ab2d8087d (net: factor out skb_mac_gso_segment() from skb_gso_segment() ) ] move vlan_depth out of while loop, or else vlan_depth always is ETH_HLEN, can not be increased, and lead to infinite loop when frame has two vlan headers. Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Fix a comment typoKusanagi Kouichi2013-03-181-1/+1
| | | | | | | | | | Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
* | netpoll: use DEFINE_STATIC_SRCU() to define netpoll_srcuLai Jiangshan2013-03-171-2/+1
| | | | | | | | | | | | | | DEFINE_STATIC_SRCU() defines srcu struct and do init at build time. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | vxlan: generalize forwarding tablesDavid Stevens2013-03-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch generalizes VXLAN forwarding table entries allowing an administrator to: 1) specify multiple destinations for a given MAC 2) specify alternate vni's in the VXLAN header 3) specify alternate destination UDP ports 4) use multicast MAC addresses as fdb lookup keys 5) specify multicast destinations 6) specify the outgoing interface for forwarded packets The combination allows configuration of more complex topologies using VXLAN encapsulation. Changes since v1: rebase to 3.9.0-rc2 Signed-Off-By: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-03-122-2/+4
|\| | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/ethernet/intel/e1000e/netdev.c Minor conflict in e1000e, a line that got fixed in 'net' has been removed in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
| * rtnl: fix info leak on RTM_GETLINK request for VF devicesMathias Krause2013-03-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | Initialize the mac address buffer with 0 as the driver specific function will probably not fill the whole buffer. In fact, all in-kernel drivers fill only ETH_ALEN of the MAX_ADDR_LEN bytes, i.e. 6 of the 32 possible bytes. Therefore we currently leak 26 bytes of stack memory to userland via the netlink interface. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bridging: fix rx_handlers return codeCristian Bercaru2013-03-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The frames for which rx_handlers return RX_HANDLER_CONSUMED are no longer counted as dropped. They are counted as successfully received by 'netif_receive_skb'. This allows network interface drivers to correctly update their RX-OK and RX-DRP counters based on the result of 'netif_receive_skb'. Signed-off-by: Cristian Bercaru <B43982@freescale.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: reduce net_rx_action() latency to 2 HZEric Dumazet2013-03-061-1/+1
| | | | | | | | | | | | | | | | | | | | We should use time_after_eq() to get maximum latency of two ticks, instead of three. Bug added in commit 24f8b2385 (net: increase receive packet quantum) Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: fix new kernel-doc warnings in net coreRandy Dunlap2013-03-061-1/+1
| | | | | | | | | | | | | | | | | | | | Fix new kernel-doc warnings in net/core/dev.c: Warning(net/core/dev.c:4788): No description found for parameter 'new_carrier' Warning(net/core/dev.c:4788): Excess function parameter 'new_carries' description in 'dev_change_carrier' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | flow_dissector: support L2 GREMichael Dalton2013-03-121-0/+11
| | | | | | | | | | | | | | | | Add support for L2 GRE tunnels, so that RPS can be more effective. Signed-off-by: Michael Dalton <mwdalton@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | tunneling: Add generic Tunnel segmentation.Pravin B Shelar2013-03-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds generic tunneling offloading support for IPv4-UDP based tunnels. GSO type is added to request this offload for a skb. netdev feature NETIF_F_UDP_TUNNEL is added for hardware offloaded udp-tunnel support. Currently no device supports this feature, software offload is used. This can be used by tunneling protocols like VXLAN. CC: Jesse Gross <jesse@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | tunneling: Capture inner mac header during encapsulation.Pravin B Shelar2013-03-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | This patch adds inner mac header. This will be used in next patch to find tunner header length. Header len is required to copy tunnel header to each gso segment. This patch does not change any functionality. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Add skb_headers_offset_update helper function.Pravin B Shelar2013-03-091-20/+14
| | | | | | | | | | | | | | | | | | This function will be used in next VXLAN_GSO patch. This patch does not change any functionality. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | tunnel: Inherit NETIF_F_SG for hw_enc_features.Pravin B Shelar2013-03-091-0/+4
| | | | | | | | | | | | | | | | Inherit scatergather feature for tunnel devices to avoid copy for TSO packets of tunneling device like GRE. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Kill link between CSUM and SG features.Pravin B Shelar2013-03-092-30/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier SG was unset if CSUM was not available for given device to force skb copy to avoid sending inconsistent csum. Commit c9af6db4c11c (net: Fix possible wrong checksum generation) added explicit flag to force copy to fix this issue. Therefore there is no need to link SG and CSUM, following patch kills this link between there two features. This patch is also required following patch in series. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: generic fdb support for drivers without ndo_fdb_<op>Vlad Yasevich2013-03-071-6/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the driver does not support the ndo_op use the generic handler for it. This should work in the majority of cases. Eventually the fdb_dflt_add call gets translated into a __dev_set_rx_mode() call which should handle hardware support for filtering via the IFF_UNICAST_FLT flag. Namely IFF_UNICAST_FLT indicates if the hardware can do unicast address filtering. If no support is available the device is put into promisc mode. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: introduce NAPI_POLL_WEIGHTEric Dumazet2013-03-051-0/+3
|/ | | | | | | | | | | | Some drivers use a too big NAPI poll weight. This patch adds a NAPI_POLL_WEIGHT default value and issues an error message if a driver attempts to use a bigger weight. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* hlist: drop the node parameter from iteratorsSasha Levin2013-02-274-18/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-02-261-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...
| * new helper: file_inode(file)Al Viro2013-02-221-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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