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* Bluetooth: add hci_connect_le_scanJakub Pawlowski2015-08-101-0/+6
| | | | | | | | | | | | | | | | Currently, when trying to connect to already paired device that just rotated its RPA MAC address, old address would be used and connection would fail. In order to fix that, kernel must scan and receive advertisement with fresh RPA before connecting. This patch adds hci_connect_le_scan with dependencies, new method that will be used to connect to remote LE devices. Instead of just sending connect request, it adds a device to whitelist. Later patches will make use of this whitelist to send conenct request when advertisement is received, and properly handle timeouts. Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: add hci_lookup_le_connectJakub Pawlowski2015-08-101-0/+20
| | | | | | | | This patch adds hci_lookup_le_connect method, that will be used to check wether outgoing le connection attempt is in progress. Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: preparation for new connect procedureJakub Pawlowski2015-08-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | Currently, when trying to connect to already paired device that just rotated its RPA MAC address, old address would be used and connection would fail. In order to fix that, kernel must scan and receive advertisement with fresh RPA before connecting. This patch adds some fields to hci_conn_params, in preparation to new connect procedure. explicit_connect will be used to override any current auto_connect action, and connect to device when ad is received. HCI_AUTO_CONN_EXPLICIT was added to auto_connect enum. When this value will be used, explicit connect is the only action, and params can be removed after successful connection. HCI_CONN_SCANNING is added to hci_conn flags. When it's set, connect is scan phase. It gets cleared when advertisement is received, and HCI_OP_LE_CREATE_CONN is sent. Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: add ack request default handlingAlexander Aring2015-08-102-0/+9
| | | | | | | | | | | This patch introduce a new mib entry which isn't part of 802.15.4 but useful as default behaviour to set the ack request bit or not if we don't know if the ack request bit should set. This is currently used for stacks like IEEE 802.15.4 6LoWPAN. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: 6lowpan: remove multiple lowpan per wpan supportAlexander Aring2015-08-101-0/+3
| | | | | | | | | | | | | | | | We currently supports multiple lowpan interfaces per wpan interface. I never saw any use case into such functionality. We drop this feature now because it's much easier do deal with address changes inside the under laying wpan interface. This patch removes the multiple lowpan interface and adds a lowpan_dev netdev pointer into the wpan_dev, if this pointer isn't null the wpan interface belongs to the assigned lowpan interface. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Tested-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* bpf: Implement function bpf_perf_event_read() that get the selected hardware ↵Kaixu Xia2015-08-102-0/+2
| | | | | | | | | | | | PMU conuter According to the perf_event_map_fd and index, the function bpf_perf_event_read() can convert the corresponding map value to the pointer to struct perf_event and return the Hardware PMU counter value. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf: Add new bpf map type to store the pointer to struct perf_eventKaixu Xia2015-08-102-0/+2
| | | | | | | | | | Introduce a new bpf map type 'BPF_MAP_TYPE_PERF_EVENT_ARRAY'. This map only stores the pointer to struct perf_event. The user space event FDs from perf_event_open() syscall are converted to the pointer to struct perf_event and stored in map. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bpf: Make the bpf_prog_array_map more genericWang Nan2015-08-101-2/+6
| | | | | | | | | | | | All the map backends are of generic nature. In order to avoid adding much special code into the eBPF core, rewrite part of the bpf_prog_array map code and make it more generic. So the new perf_event_array map type can reuse most of code with bpf_prog_array map and add fewer lines of special code. Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* perf: add the necessary core perf APIs when accessing events counters in ↵Kaixu Xia2015-08-101-0/+10
| | | | | | | | | | | | | | | | | | | eBPF programs This patch add three core perf APIs: - perf_event_attrs(): export the struct perf_event_attr from struct perf_event; - perf_event_get(): get the struct perf_event from the given fd; - perf_event_read_local(): read the events counters active on the current CPU; These APIs are needed when accessing events counters in eBPF programs. The API perf_event_read_local() comes from Peter and I add the corresponding SOB. Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: dsa: add support for switchdev FDB objectsVivien Didelot2015-08-101-6/+10
| | | | | | | | | | | Remove the fdb_{add,del,getnext} function pointer in favor of new port_fdb_{add,del,getnext}. Implement the switchdev_port_obj_{add,del,dump} functions in DSA to support the SWITCHDEV_OBJ_PORT_FDB objects. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: switchdev: support static FDB addressesVivien Didelot2015-08-101-0/+1
| | | | | | | | This patch adds a is_static boolean to the switchdev_obj_fdb structure, in order to set the ndm_state to either NUD_NOARP or NUD_REACHABLE. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: switchdev: change fdb addr for a byte arrayVivien Didelot2015-08-101-1/+1
| | | | | | | | | | The address in the switchdev_obj_fdb structure is currently represented as a pointer. Replacing it for a 6-byte array allows switchdev to carry addresses directly read from hardware registers, not stored by the switch chip driver (as in Rocker). Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* vxlan: combine VXLAN_FLOWBASED into VXLAN_COLLECT_METADATAAlexei Starovoitov2015-08-072-4/+1
| | | | | | | | | | | | | IFLA_VXLAN_FLOWBASED is useless without IFLA_VXLAN_COLLECT_METADATA, so combine them into single IFLA_VXLAN_COLLECT_METADATA flag. 'flowbased' doesn't convey real meaning of the vxlan tunnel mode. This mode can be used by routing, tc+bpf and ovs. Only ovs is strictly flow based, so 'collect metadata' is a better name for this tunnel mode. Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* net_dbg_ratelimited: turn into no-op when !DEBUGJason A. Donenfeld2015-08-071-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pr_debug family of functions turns into a no-op when -DDEBUG is not specified, opting instead to call "no_printk", which gets compiled to a no-op (but retains gcc's nice warnings about printf-style arguments). The problem with net_dbg_ratelimited is that it is defined to be a variant of net_ratelimited_function, which expands to essentially: if (net_ratelimit()) pr_debug(fmt, ...); When DEBUG is not defined, then this becomes, if (net_ratelimit()) ; This seems benign, except it isn't. Firstly, there's the obvious overhead of calling net_ratelimit needlessly, which does quite some book keeping for the rate limiting. Given that the pr_debug and net_dbg_ratelimited family of functions are sprinkled liberally through performance critical code, with developers assuming they'll be compiled out to a no-op most of the time, we certainly do not want this needless book keeping. Secondly, and most visibly, even though no debug message is printed when DEBUG is not defined, if there is a flood of invocations, dmesg winds up peppered with messages such as "net_ratelimit: 320 callbacks suppressed". This is because our aforementioned net_ratelimit() function actually prints this text in some circumstances. It's especially odd to see this when there isn't any other accompanying debug message. So, in sum, it doesn't make sense to have this function's current behavior, and instead it should match what every other debug family of functions in the kernel does with !DEBUG -- nothing. This patch replaces calls to net_dbg_ratelimited when !DEBUG with no_printk, keeping with the idiom of all the other debug print helpers. Also, though not strictly neccessary, it guards the call with an if (0) so that all evaluation of any arguments are sure to be compiled out. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx5_core: Support physical port countersGal Pressman2015-08-072-0/+11
| | | | | | | | | | | | | Added physical port counters in the following standard formats to ethtool statistics: - IEEE 802.3 - RFC2863 - RFC2819 Signed-off-by: Gal Pressman <galp@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx5e: Light-weight netdev open/stopAchiad Shochat2015-08-071-1/+8
| | | | | | | | | | | | | Create/destroy TIRs, TISs and flow tables upon PCI probe/remove rather than upon the netdev ndo_open/stop. Upon ndo_stop(), redirect all RX traffic to the (lately introduced) "Drop RQ" and then close only the RX/TX rings, leaving the TIRs, TISs and flow tables alive. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx5_core: Introduce access function to modify RSS/LRO paramsAchiad Shochat2015-08-071-1/+8
| | | | | | | | | | | To be used by the mlx5 Eth driver in following commit. This is in preparation for netdev "light-weight" open/stop flow change described in previous commit. Signed-off-by: Achiad Shochat <achiad@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller2015-08-057-23/+63
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for net-next, they are: 1) A couple of cleanups for the netfilter core hook from Eric Biederman. 2) Net namespace hook registration, also from Eric. This adds a dependency with the rtnl_lock. This should be fine by now but we have to keep an eye on this because if we ever get the per-subsys nfnl_lock before rtnl we have may problems in the future. But we have room to remove this in the future by propagating the complexity to the clients, by registering hooks for the init netns functions. 3) Update nf_tables to use the new net namespace hook infrastructure, also from Eric. 4) Three patches to refine and to address problems from the new net namespace hook infrastructure. 5) Switch to alternate jumpstack in xtables iff the packet is reentering. This only applies to a very special case, the TEE target, but Eric Dumazet reports that this is slowing down things for everyone else. So let's only switch to the alternate jumpstack if the tee target is in used through a static key. This batch also comes with offline precalculation of the jumpstack based on the callchain depth. From Florian Westphal. 6) Minimal SCTP multihoming support for our conntrack helper, from Michal Kubecek. 7) Reduce nf_bridge_info per skbuff scratchpad area to 32 bytes, from Florian Westphal. 8) Fix several checkpatch errors in bridge netfilter, from Bernhard Thaler. 9) Get rid of useless debug message in ip6t_REJECT, from Subash Abhinov. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| * netfilter: bridge: reduce nf_bridge_info to 32 bytes againFlorian Westphal2015-07-302-9/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | We can use union for most of the temporary cruft (original ipv4/ipv6 address, source mac, physoutdev) since they're used during different stages of br netfilter traversal. Also get rid of the last two ->mask users. Shrinks struct from 48 to 32 on 64bit arch. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: nf_ct_sctp: minimal multihoming supportMichal Kubeček2015-07-302-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently nf_conntrack_proto_sctp module handles only packets between primary addresses used to establish the connection. Any packets between secondary addresses are classified as invalid so that usual firewall configurations drop them. Allowing HEARTBEAT and HEARTBEAT-ACK chunks to establish a new conntrack would allow traffic between secondary addresses to pass through. A more sophisticated solution based on the addresses advertised in the initial handshake (and possibly also later dynamic address addition and removal) would be much harder to implement. Moreover, in general we cannot assume to always see the initial handshake as it can be routed through a different path. The patch adds two new conntrack states: SCTP_CONNTRACK_HEARTBEAT_SENT - a HEARTBEAT chunk seen but not acked SCTP_CONNTRACK_HEARTBEAT_ACKED - a HEARTBEAT acked by HEARTBEAT-ACK State transition rules: - HEARTBEAT_SENT responds to usual chunks the same way as NONE (so that the behaviour changes as little as possible) - HEARTBEAT_ACKED responds to usual chunks the same way as ESTABLISHED does, except the resulting state is HEARTBEAT_ACKED rather than ESTABLISHED - previously existing states except NONE are preserved when HEARTBEAT or HEARTBEAT-ACK is seen - NONE (in the initial direction) changes to HEARTBEAT_SENT on HEARTBEAT and to CLOSED on HEARTBEAT-ACK - HEARTBEAT_SENT changes to HEARTBEAT_ACKED on HEARTBEAT-ACK in the reply direction - HEARTBEAT_SENT and HEARTBEAT_ACKED are preserved on HEARTBEAT and HEARTBEAT-ACK otherwise Normally, vtag is set from the INIT chunk for the reply direction and from the INIT-ACK chunk for the originating direction (i.e. each of these defines vtag value for the opposite direction). For secondary conntracks, we can't rely on seeing INIT/INIT-ACK and even if we have seen them, we would need to connect two different conntracks. Therefore simplified logic is applied: vtag of first packet in each direction (HEARTBEAT in the originating and HEARTBEAT-ACK in reply direction) is saved and all following packets in that direction are compared with this saved value. While INIT and INIT-ACK define vtag for the opposite direction, vtags extracted from HEARTBEAT and HEARTBEAT-ACK are always for their direction. Default timeout values for new states are HEARTBEAT_SENT: 30 seconds (default hb_interval) HEARTBEAT_ACKED: 210 seconds (hb_interval * path_max_retry + max_rto) (We cannot expect to see the shutdown sequence so that, unlike ESTABLISHED, the HEARTBEAT_ACKED timeout shouldn't be too long.) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: rename local nf_hook_list to hook_listPablo Neira Ayuso2015-07-231-7/+7
| | | | | | | | | | | | | | | | 085db2c04557 ("netfilter: Per network namespace netfilter hooks.") introduced a new nf_hook_list that is global, so let's avoid this overlap. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
| * netfilter: add and use jump label for xt_teeFlorian Westphal2015-07-151-0/+7
| | | | | | | | | | | | | | | | | | Don't bother testing if we need to switch to alternate stack unless TEE target is used. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: xtables: don't save/restore jumpstack offsetFlorian Westphal2015-07-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In most cases there is no reentrancy into ip/ip6tables. For skbs sent by REJECT or SYNPROXY targets, there is one level of reentrancy, but its not relevant as those targets issue an absolute verdict, i.e. the jumpstack can be clobbered since its not used after the target issues absolute verdict (ACCEPT, DROP, STOLEN, etc). So the only special case where it is relevant is the TEE target, which returns XT_CONTINUE. This patch changes ip(6)_do_table to always use the jump stack starting from 0. When we detect we're operating on an skb sent via TEE (percpu nf_skb_duplicated is 1) we switch to an alternate stack to leave the original one alone. Since there is no TEE support for arptables, it doesn't need to test if tee is active. The jump stack overflow tests are no longer needed as well -- since ->stacksize is the largest call depth we cannot exceed it. A much better alternative to the external jumpstack would be to just declare a jumps[32] stack on the local stack frame, but that would mean we'd have to reject iptables rulesets that used to work before. Another alternative would be to start rejecting rulesets with a larger call depth, e.g. 1000 -- in this case it would be feasible to allocate the entire stack in the percpu area which would avoid one dereference. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: move tee_active to coreFlorian Westphal2015-07-151-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | This prepares for a TEE like expression in nftables. We want to ensure only one duplicate is sent, so both will use the same percpu variable to detect duplication. The other use case is detection of recursive call to xtables, but since we don't want dependency from nft to xtables core its put into core.c instead of the x_tables core. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| * netfilter: Per network namespace netfilter hooks.Eric W. Biederman2015-07-152-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add a new set of functions for registering and unregistering per network namespace hooks. - Modify the old global namespace hook functions to use the per network namespace hooks in their implementation, so their remains a single list that needs to be walked for any hook (this is important for keeping the hook priority working and for keeping the code walking the hooks simple). - Only allow registering the per netdevice hooks in the network namespace where the network device lives. - Dynamically allocate the structures in the per network namespace hook list in nf_register_net_hook, and unregister them in nf_unregister_net_hook. Dynamic allocate is required somewhere as the number of network namespaces are not fixed so we might as well allocate them in the registration function. The chain of registered hooks on any list is expected to be small so the cost of walking that list to find the entry we are unregistering should also be small. Performing the management of the dynamically allocated list entries in the registration and unregistration functions keeps the complexity from spreading. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| * netfilter: kill nf_hooks_activeEric W. Biederman2015-07-151-7/+4
| | | | | | | | | | | | | | | | The function obscures what is going on in nf_hook_thresh and it's existence requires computing the hook list twice. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | mpls: Use definition for reserved label checksRobert Shearman2015-08-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | In multiple locations there are checks for whether the label in hand is a reserved label or not using the arbritray value of 16. Factor this out into a #define for better maintainability and for documentation. Signed-off-by: Robert Shearman <rshearma@brocade.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | ebpf: add skb->hash to offset map for usage in {cls, act}_bpf or filtersDaniel Borkmann2015-08-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add skb->hash to the __sk_buff offset map, so it can be accessed from an eBPF program. We currently already do this for classic BPF filters, but not yet on eBPF, it might be useful as a demuxer in combination with helpers like bpf_clone_redirect(), toy example: __section("cls-lb") int ingress_main(struct __sk_buff *skb) { unsigned int which = 3 + (skb->hash & 7); /* bpf_skb_store_bytes(skb, ...); */ /* bpf_l{3,4}_csum_replace(skb, ...); */ bpf_clone_redirect(skb, which, 0); return -1; } I was thinking whether to add skb_get_hash(), but then concluded the raw skb->hash seems fine in this case: we can directly access the hash w/o extra eBPF helper function call, it's filled out by many NICs on ingress, and in case the entropy level would not be sufficient, people can still implement their own specific sw fallback hash mix anyway. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-08-0125-31/+113
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/s390/net/bpf_jit_comp.c drivers/net/ethernet/ti/netcp_ethss.c net/bridge/br_multicast.c net/ipv4/ip_fragment.c All four conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2015-08-017-15/+32
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Must teardown SR-IOV before unregistering netdev in igb driver, from Alex Williamson. 2) Fix ipv6 route unreachable crash in IPVS, from Alex Gartrell. 3) Default route selection in ipv4 should take the prefix length, table ID, and TOS into account, from Julian Anastasov. 4) sch_plug must have a reset method in order to purge all buffered packets when the qdisc is reset, likewise for sch_choke, from WANG Cong. 5) Fix deadlock and races in slave_changelink/br_setport in bridging. From Nikolay Aleksandrov. 6) mlx4 bug fixes (wrong index in port even propagation to VFs, overzealous BUG_ON assertion, etc.) from Ido Shamay, Jack Morgenstein, and Or Gerlitz. 7) Turn off klog message about SCTP userspace interface compat that makes no sense at all, from Daniel Borkmann. 8) Fix unbounded restarts of inet frag eviction process, causing NMI watchdog soft lockup messages, from Florian Westphal. 9) Suspend/resume fixes for r8152 from Hayes Wang. 10) Fix busy loop when MSG_WAITALL|MSG_PEEK is used in TCP recv, from Sabrina Dubroca. 11) Fix performance regression when removing a lot of routes from the ipv4 routing tables, from Alexander Duyck. 12) Fix device leak in AF_PACKET, from Lars Westerhoff. 13) AF_PACKET also has a header length comparison bug due to signedness, from Alexander Drozdov. 14) Fix bug in EBPF tail call generation on x86, from Daniel Borkmann. 15) Memory leaks, TSO stats, watchdog timeout and other fixes to thunderx driver from Sunil Goutham and Thanneeru Srinivasulu. 16) act_bpf can leak memory when replacing programs, from Daniel Borkmann. 17) WOL packet fixes in gianfar driver, from Claudiu Manoil. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (79 commits) stmmac: fix missing MODULE_LICENSE in stmmac_platform gianfar: Enable device wakeup when appropriate gianfar: Fix suspend/resume for wol magic packet gianfar: Fix warning when CONFIG_PM off act_pedit: check binding before calling tcf_hash_release() net: sk_clone_lock() should only do get_net() if the parent is not a kernel socket net: sched: fix refcount imbalance in actions r8152: reset device when tx timeout r8152: add pre_reset and post_reset qlcnic: Fix corruption while copying act_bpf: fix memory leaks when replacing bpf programs net: thunderx: Fix for crash while BGX teardown net: thunderx: Add PCI driver shutdown routine net: thunderx: Fix crash when changing rss with mutliple traffic flows net: thunderx: Set watchdog timeout value net: thunderx: Wakeup TXQ only if CQE_TX are processed net: thunderx: Suppress alloc_pages() failure warnings net: thunderx: Fix TSO packet statistic net: thunderx: Fix memory leak when changing queue count net: thunderx: Fix RQ_DROP miscalculation ...
| | * | net: sched: fix refcount imbalance in actionsDaniel Borkmann2015-07-301-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 55334a5db5cd ("net_sched: act: refuse to remove bound action outside"), we end up with a wrong reference count for a tc action. Test case 1: FOO="1,6 0 0 4294967295," BAR="1,6 0 0 4294967294," tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 \ action bpf bytecode "$FOO" tc actions show action bpf action order 0: bpf bytecode '1,6 0 0 4294967295' default-action pipe index 1 ref 1 bind 1 tc actions replace action bpf bytecode "$BAR" index 1 tc actions show action bpf action order 0: bpf bytecode '1,6 0 0 4294967294' default-action pipe index 1 ref 2 bind 1 tc actions replace action bpf bytecode "$FOO" index 1 tc actions show action bpf action order 0: bpf bytecode '1,6 0 0 4294967295' default-action pipe index 1 ref 3 bind 1 Test case 2: FOO="1,6 0 0 4294967295," tc filter add dev foo parent 1: bpf bytecode "$FOO" flowid 1:1 action ok tc actions show action gact action order 0: gact action pass random type none pass val 0 index 1 ref 1 bind 1 tc actions add action drop index 1 RTNETLINK answers: File exists [...] tc actions show action gact action order 0: gact action pass random type none pass val 0 index 1 ref 2 bind 1 tc actions add action drop index 1 RTNETLINK answers: File exists [...] tc actions show action gact action order 0: gact action pass random type none pass val 0 index 1 ref 3 bind 1 What happens is that in tcf_hash_check(), we check tcf_common for a given index and increase tcfc_refcnt and conditionally tcfc_bindcnt when we've found an existing action. Now there are the following cases: 1) We do a late binding of an action. In that case, we leave the tcfc_refcnt/tcfc_bindcnt increased and are done with the ->init() handler. This is correctly handeled. 2) We replace the given action, or we try to add one without replacing and find out that the action at a specific index already exists (thus, we go out with error in that case). In case of 2), we have to undo the reference count increase from tcf_hash_check() in the tcf_hash_check() function. Currently, we fail to do so because of the 'tcfc_bindcnt > 0' check which bails out early with an -EPERM error. Now, while commit 55334a5db5cd prevents 'tc actions del action ...' on an already classifier-bound action to drop the reference count (which could then become negative, wrap around etc), this restriction only accounts for invocations outside a specific action's ->init() handler. One possible solution would be to add a flag thus we possibly trigger the -EPERM ony in situations where it is indeed relevant. After the patch, above test cases have correct reference count again. Fixes: 55334a5db5cd ("net_sched: act: refuse to remove bound action outside") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Cong Wang <cwang@twopensource.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | net/macb: convert to kernel docAndy Shevchenko2015-07-271-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch coverts struct description to the kernel doc format. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | tcp: fix recv with flags MSG_WAITALL | MSG_PEEKSabrina Dubroca2015-07-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, tcp_recvmsg enters a busy loop in sk_wait_data if called with flags = MSG_WAITALL | MSG_PEEK. sk_wait_data waits for sk_receive_queue not empty, but in this case, the receive queue is not empty, but does not contain any skb that we can use. Add a "last skb seen on receive queue" argument to sk_wait_data, so that it sleeps until the receive queue has new skbs. Link: https://bugzilla.kernel.org/show_bug.cgi?id=99461 Link: https://sourceware.org/bugzilla/show_bug.cgi?id=18493 Link: https://bugzilla.redhat.com/show_bug.cgi?id=1205258 Reported-by: Enrico Scholz <rh-bugzilla@ensc.de> Reported-by: Dan Searle <dan@censornet.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | inet: frags: remove INET_FRAG_EVICTED and use list_evictor for the testNikolay Aleksandrov2015-07-271-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can simply remove the INET_FRAG_EVICTED flag to avoid all the flags race conditions with the evictor and use a participation test for the evictor list, when we're at that point (after inet_frag_kill) in the timer there're 2 possible cases: 1. The evictor added the entry to its evictor list while the timer was waiting for the chainlock or 2. The timer unchained the entry and the evictor won't see it In both cases we should be able to see list_evictor correctly due to the sync on the chainlock. Joint work with Florian Westphal. Tested-by: Frank Schreuder <fschreuder@transip.nl> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | inet: frag: change *_frag_mem_limit functions to take netns_frags as argumentFlorian Westphal2015-07-271-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Followup patch will call it after inet_frag_queue was freed, so q->net doesn't work anymore (but netf = q->net; free(q); mem_limit(netf) would). Tested-by: Frank Schreuder <fschreuder@transip.nl> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | inet: frag: don't re-use chainlist for evictorFlorian Westphal2015-07-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 65ba1f1ec0eff ("inet: frags: fix a race between inet_evict_bucket and inet_frag_kill") describes the bug, but the fix doesn't work reliably. Problem is that ->flags member can be set on other cpu without chainlock being held by that task, i.e. the RMW-Cycle can clear INET_FRAG_EVICTED bit after we put the element on the evictor private list. We can crash when walking the 'private' evictor list since an element can be deleted from list underneath the evictor. Join work with Nikolay Alexandrov. Fixes: b13d3cbfb8e8 ("inet: frag: move eviction of queues to work queue") Reported-by: Johan Schuijt <johan@transip.nl> Tested-by: Frank Schreuder <fschreuder@transip.nl> Signed-off-by: Nikolay Alexandrov <nikolay@cumulusnetworks.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller2015-07-252-2/+1
| | |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains ten Netfilter/IPVS fixes, they are: 1) Address refcount leak when creating an expectation from the ctnetlink interface. 2) Fix bug splat in the IDLETIMER target related to sysfs, from Dmitry Torokhov. 3) Resolve panic for unreachable route in IPVS with locally generated traffic in the output path, from Alex Gartrell. 4) Fix wrong source address in rare cases for tunneled traffic in IPVS, from Julian Anastasov. 5) Fix crash if scheduler is changed via ipvsadm -E, again from Julian. 6) Make sure skb->sk is unset for forwarded traffic through IPVS, again from Alex Gartrell. 7) Fix crash with IPVS sync protocol v0 and FTP, from Julian. 8) Reset sender cpu for forwarded traffic in IPVS, also from Julian. 9) Allocate template conntracks through kmalloc() to resolve netns dependency problems with the conntrack kmem_cache. 10) Fix zones with expectations that clash using the same tuple, from Joe Stringer. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | | * | netfilter: fix netns dependencies with conntrack templatesPablo Neira Ayuso2015-07-202-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Quoting Daniel Borkmann: "When adding connection tracking template rules to a netns, f.e. to configure netfilter zones, the kernel will endlessly busy-loop as soon as we try to delete the given netns in case there's at least one template present, which is problematic i.e. if there is such bravery that the priviledged user inside the netns is assumed untrusted. Minimal example: ip netns add foo ip netns exec foo iptables -t raw -A PREROUTING -d 1.2.3.4 -j CT --zone 1 ip netns del foo What happens is that when nf_ct_iterate_cleanup() is being called from nf_conntrack_cleanup_net_list() for a provided netns, we always end up with a net->ct.count > 0 and thus jump back to i_see_dead_people. We don't get a soft-lockup as we still have a schedule() point, but the serving CPU spins on 100% from that point onwards. Since templates are normally allocated with nf_conntrack_alloc(), we also bump net->ct.count. The issue why they are not yet nf_ct_put() is because the per netns .exit() handler from x_tables (which would eventually invoke xt_CT's xt_ct_tg_destroy() that drops reference on info->ct) is called in the dependency chain at a *later* point in time than the per netns .exit() handler for the connection tracker. This is clearly a chicken'n'egg problem: after the connection tracker .exit() handler, we've teared down all the connection tracking infrastructure already, so rightfully, xt_ct_tg_destroy() cannot be invoked at a later point in time during the netns cleanup, as that would lead to a use-after-free. At the same time, we cannot make x_tables depend on the connection tracker module, so that the xt_ct_tg_destroy() would be invoked earlier in the cleanup chain." Daniel confirms this has to do with the order in which modules are loaded or having compiled nf_conntrack as modules while x_tables built-in. So we have no guarantees regarding the order in which netns callbacks are executed. Fix this by allocating the templates through kmalloc() from the respective SYNPROXY and CT targets, so they don't depend on the conntrack kmem cache. Then, release then via nf_ct_tmpl_free() from destroy_conntrack(). This branch is marked as unlikely since conntrack templates are rarely allocated and only from the configuration plane path. Note that templates are not kept in any list to avoid further dependencies with nf_conntrack anymore, thus, the tmpl larval list is removed. Reported-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Tested-by: Daniel Borkmann <daniel@iogearbox.net>
| | * | | ipv4: consider TOS in fib_select_defaultJulian Anastasov2015-07-251-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fib_select_default considers alternative routes only when res->fi is for the first alias in res->fa_head. In the common case this can happen only when the initial lookup matches the first alias with highest TOS value. This prevents the alternative routes to require specific TOS. This patch solves the problem as follows: - routes that require specific TOS should be returned by fib_select_default only when TOS matches, as already done in fib_table_lookup. This rule implies that depending on the TOS we can have many different lists of alternative gateways and we have to keep the last used gateway (fa_default) in first alias for the TOS instead of using single tb_default value. - as the aliases are ordered by many keys (TOS desc, fib_priority asc), we restrict the possible results to routes with matching TOS and lowest metric (fib_priority) and routes that match any TOS, again with lowest metric. For example, packet with TOS 8 can not use gw3 (not lowest metric), gw4 (different TOS) and gw6 (not lowest metric), all other gateways can be used: tos 8 via gw1 metric 2 <--- res->fa_head and res->fi tos 8 via gw2 metric 2 tos 8 via gw3 metric 3 tos 4 via gw4 tos 0 via gw5 tos 0 via gw6 metric 1 Reported-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | Merge tag 'sound-4.2-rc5' of ↵Linus Torvalds2015-08-011-2/+2
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This became a relative big update as it includes the collected ASoC fixes. There are a few fixes in ASoC core side, mostly for DAPM and the new topology API. The rest are various ASoC driver-specific fixes, as well as the usual HD-audio and USB-audio quirks" * tag 'sound-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits) ALSA: hda - Fix MacBook Pro 5,2 quirk ALSA: hda - Fix race between PM ops and HDA init/probe ALSA: usb-audio: add dB range mapping for some devices ALSA: hda - Apply a fixup to Dell Vostro 5480 ALSA: hda - Add pin quirk for the headset mic jack detection on Dell laptop ALSA: hda - Apply fixup for another Toshiba Satellite S50D ALSA: fireworks: add support for AudioFire2 quirk ALSA: hda - Fix the headset mic that will not work on Dell desktop machine ALSA: hda - fix cs4210_spdif_automute() ASoC: pcm1681: Fix setting de-emphasis sampling rate selection ASoC: ssm4567: Keep TDM_BCLKS in ssm4567_set_dai_fmt ASoC: sgtl5000: Fix up define for SGTL5000_SMALL_POP ASoC: dapm: Don't add prefix to widget stream name ASoC: rt5645: Check if codec is initialized in workqueue handler ASoC: Intel: Get correct usage_count value to load firmware ASoC: topology: Fix to add dapm mixer info ASoC: zx: spdif: Fix devm_ioremap_resource return value check ASoC: zx: i2s: Fix devm_ioremap_resource return value check ASoC: mediatek: Use platform_of_node for machine drivers ASoC: Free card DAPM context on snd_soc_instantiate_card() error path ...
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| | *---. \ \ \ Merge remote-tracking branches 'asoc/fix/sgtl5000', 'asoc/fix/topology' and ↵Mark Brown2015-07-241-2/+2
| | |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | 'asoc/fix/zx' into asoc-linus
| | | | * | | | | ASoC: topology: fix typos in topology headerVinod Koul2015-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | | | | | | | Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds2015-07-312-2/+2
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull drm fixes from Dave Airlie: "This has a bunch of nouveau fixes, as Ben has been hibernating and has lots of small fixes for lots of bugs across nouveau. Radeon has one major fix for hdmi/dp audio regression that is larger than Alex would like, but seems to fix up a fair few bugs, along with some misc fixes. And a few msm fixes, one of which is also a bit large. But nothing in here seems insane or crazy for this stage, just more than I'd like" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (33 commits) drm/msm/mdp5: release SMB (shared memory blocks) in various cases drm/msm: change to uninterruptible wait in atomic commit drm/msm: mdp4: Fix drm_framebuffer dereference crash drm/msm: fix msm_gem_prime_get_sg_table() drm/amdgpu: add new parameter to seperate map and unmap drm/amdgpu: hdp_flush is not needed for inside IB drm/amdgpu: different emit_ib for gfx and compute drm/amdgpu: information leak in amdgpu_info_ioctl() drm/amdgpu: clean up init sequence for failures drm/radeon/combios: add some validation of lvds values drm/radeon: rework audio modeset to handle non-audio hdmi features drm/radeon: rework audio detect (v4) drm/amdgpu: Drop drm/ prefix for including drm.h in amdgpu_drm.h drm/radeon: Drop drm/ prefix for including drm.h in radeon_drm.h drm/nouveau/nouveau/ttm: fix tiled system memory with Maxwell drm/nouveau/kms/nv50-: guard against enabling cursor on disabled heads drm/nouveau/fbcon/g80: reduce PUSH_SPACE alloc, fire ring on accel init drm/nouveau/fbcon/gf100-: reduce RING_SPACE allocation drm/nouveau/fbcon/nv11-: correctly account for ring space usage drm/nouveau/bios: add proper support for opcode 0x59 ...
| | * | | | | | | | drm/amdgpu: Drop drm/ prefix for including drm.h in amdgpu_drm.hMichel Dänzer2015-07-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows amdgpu_drm.h to be reused verbatim in libdrm. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
| | * | | | | | | | drm/radeon: Drop drm/ prefix for including drm.h in radeon_drm.hMichel Dänzer2015-07-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows radeon_drm.h to be reused verbatim in libdrm. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
| * | | | | | | | | Merge tag 'pm+acpi-4.2-rc5' of ↵Linus Torvalds2015-07-301-0/+1
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI fixes from Rafael Wysocki: "These fix three regressions, two recent ones (cpufreq core and ACPI device power management) and one introduced during the 4.1 cycle (intel_pstate). Specifics: - Fix a recently introduced issue in the cpufreq core causing it to attempt to create duplicate symbolic links to the policy directory in sysfs for CPUs that are offline when the cpufreq driver is being registered (Rafael J Wysocki) - Fix a recently introduced problem in the ACPI device power management core code causing it to store an incorrect value in the device object's power.state field in some cases which in turn leads to attempts to turn power resources off while they should still be on going forward (Mika Westerberg) - Fix an intel_pstate driver issue introduced during the 4.1 cycle which leads to kernel panics on boot on Knights Landing chips due to incomplete support for them in that driver (Lukasz Anaczkowski)" * tag 'pm+acpi-4.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: Avoid attempts to create duplicate symbolic links ACPI / PM: Use target_state to set the device power state intel_pstate: Add get_scaling cpu_defaults param to Knights Landing
| | * | | | | | | | | cpufreq: Avoid attempts to create duplicate symbolic linksRafael J. Wysocki2015-07-281-0/+1
| | |/ / / / / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 87549141d516 (cpufreq: Stop migrating sysfs files on hotplug) there is a problem with CPUs that share cpufreq policy objects with other CPUs and are initially offline. Say CPU1 shares a policy with CPU0 which is online and is registered first. As part of the registration process, cpufreq_add_dev() is called for it. It creates the policy object and a symbolic link to it from the CPU1's sysfs directory. If CPU1 is registered subsequently and it is offline at that time, cpufreq_add_dev() will attempt to create a symbolic link to the policy object for it, but that link is present already, so a warning about that will be triggered. To avoid that warning, make cpufreq use an additional CPU mask containing related CPUs that are actually present for each policy object. That mask is initialized when the policy object is populated after its creation (for the first online CPU using it) and it includes CPUs from the "policy CPUs" mask returned by the cpufreq driver's ->init() callback that are physically present at that time. Symbolic links to the policy are created only for the CPUs in that mask. If cpufreq_add_dev() is invoked for an offline CPU, it checks the new mask and only creates the symlink if the CPU was not in it (the CPU is added to the mask at the same time). In turn, cpufreq_remove_dev() drops the given CPU from the new mask, removes its symlink to the policy object and returns, unless it is the CPU owning the policy object. In that case, the policy object is moved to a new CPU's sysfs directory or deleted if the CPU being removed was the last user of the policy. While at it, notice that cpufreq_remove_dev() can't fail, because its return value is ignored, so make it ignore return values from __cpufreq_remove_dev_prepare() and __cpufreq_remove_dev_finish() and prevent these functions from aborting on errors returned by __cpufreq_governor(). Also drop the now unused sif argument from them. Fixes: 87549141d516 (cpufreq: Stop migrating sysfs files on hotplug) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reported-and-tested-by: Russell King <linux@arm.linux.org.uk> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
| * | | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds2015-07-291-0/+1
| |\ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI target fixes from Nicholas Bellinger: "This series is larger than what I'd normally be conformable with sending for a -rc5 PULL request.. However, the bulk of the series is localized to qla2xxx target specific fixes that address a number of real-world correctness issues, that have been outstanding on the list for ~6 weeks now. They where submitted + verified + acked by the HW LLD vendor, contributed by a major production customer of the code, and are marked for v3.18.y stable code. That said, I don't see a good reason to wait another month to get these fixes into mainline. Beyond the qla2xx specific fixes, this series also includes: - bugfix for a long standing use-after-free in iscsi-target during TPG shutdown + demo-mode sessions. - bugfix for a >= v4.0 regression OOPs in iscsi-target during a iscsi_start_kthreads() failure. - bugfix for a >= v4.0 regression hang in iscsi-target for iser explicit session/connection logout. - bugfix for a iser-target bug where a early CMA REJECTED status during login triggers a NULL pointer dereference OOPs. - bugfixes for a handful of v4.2-rc1 specific regressions related to the larger set of recent backend configfs attribute changes. A big thanks to QLogic + Pure Storage for the qla2xxx target bugfixes" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits) Documentation/target: Fix tcm_mod_builder.py build breakage iser-target: Fix REJECT CM event use-after-free OOPs iscsi-target: Fix iser explicit logout TX kthread leak iscsi-target: Fix iscsit_start_kthreads failure OOPs iscsi-target: Fix use-after-free during TPG session shutdown qla2xxx: terminate exchange when command is aborted by LIO qla2xxx: drop cmds/tmrs arrived while session is being deleted qla2xxx: disable scsi_transport_fc registration in target mode qla2xxx: added sess generations to detect RSCN update races qla2xxx: Abort stale cmds on qla_tgt_wq when plogi arrives qla2xxx: delay plogi/prli ack until existing sessions are deleted qla2xxx: cleanup cmd in qla workqueue before processing TMR qla2xxx: kill sessions/log out initiator on RSCN and port down events qla2xxx: fix command initialization in target mode. qla2xxx: Remove msleep in qlt_send_term_exchange qla2xxx: adjust debug flags qla2xxx: release request queue reservation. qla2xxx: Add flush after updating ATIOQ consumer index. qla2xxx: Enable target mode for ISP27XX qla2xxx: Fix hardware lock/unlock issue causing kernel panic. ...
| | * | | | | | | | | iscsi-target: Fix iscsit_start_kthreads failure OOPsNicholas Bellinger2015-07-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a regression introduced with the following commit in v4.0-rc1 code, where a iscsit_start_kthreads() failure triggers a NULL pointer dereference OOPs: commit 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca Author: Nicholas Bellinger <nab@linux-iscsi.org> Date: Thu Feb 26 22:19:15 2015 -0800 iscsi-target: Convert iscsi_thread_set usage to kthread.h To address this bug, move iscsit_start_kthreads() immediately preceeding the transmit of last login response, before signaling a successful transition into full-feature-phase within existing iscsi_target_do_tx_login_io() logic. This ensures that no target-side resource allocation failures can occur after the final login response has been successfully sent. Also, it adds a iscsi_conn->rx_login_comp to allow the RX thread to sleep to prevent other socket related failures until the final iscsi_post_login_handler() call is able to complete. Cc: Sagi Grimberg <sagig@mellanox.com> Cc: <stable@vger.kernel.org> # v3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * | | | | | | | | | Merge tag 'devicetree-fixes-for-4.2' of ↵Linus Torvalds2015-07-281-1/+1
| |\ \ \ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree fixes from Rob Herring: "A handful of DT related fixes for 4.2-rc" * tag 'devicetree-fixes-for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: Drop owner assignment from platform and i2c driver DEVICETREE: Misc fix for the AR7100 SPI controller binding of: constify drv arg of of_driver_match_device stub of: add HAS_IOMEM depends to OF_ADDRESS
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-17 00:56:54 +0100