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2017-08-22net: hns3: Add support to change MTU in HNS3 hardwareSalil2-0/+35
This patch adds the following support to the HNS3 driver: 1. Support to change the Maximum Transmission Unit of a port in the HNS NIC hardware. 2. Initializes the supported MTU range for the netdevice. Signed-off-by: lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add MaintainerAviad Krawczyk1-0/+7
Update MAINTAINERS file Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add netpollAviad Krawczyk1-0/+20
Add more netdev operation - netpoll. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add ethtool and statsAviad Krawczyk8-1/+341
Add ethtool operations and statistics operations. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add Tx operationAviad Krawczyk8-4/+799
Add transmit operation for sending data by qp operations. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add Rx handlerAviad Krawczyk16-0/+1278
Set the io resources in the nic and handle rx events by qp operations. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add cmdq completion handlerAviad Krawczyk2-1/+308
Add cmdq completion handler for getting a notification about the completion of cmdq commands. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add cmdq commandsAviad Krawczyk8-2/+683
Add cmdq commands for setting queue pair contexts in the nic. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add ceqsAviad Krawczyk7-8/+427
Initialize the completion event queues and handle ceq events by calling the registered handlers. Used for cmdq command completion. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Initialize cmdqAviad Krawczyk6-6/+500
Create the work queues for cmdq and update the nic about the work queue contexts. cmdq commands are used for updating the nic about the qp contexts. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Set qp contextAviad Krawczyk12-2/+787
Update the nic about the resources of the queue pairs. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add qp resourcesAviad Krawczyk6-5/+507
Create the resources for queue pair operations: doorbell area, consumer index address and producer index address. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add wqAviad Krawczyk8-5/+968
Create work queues for being used by the queue pairs. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add logical Txq and RxqAviad Krawczyk12-4/+793
Create the logical queues of the nic. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add Rx mode and link event handlerAviad Krawczyk11-1/+745
Add port management message for setting Rx mode in the card, used for rx_mode netdev operation. The link event handler is used for getting a notification about the link state. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add port management commandsAviad Krawczyk7-3/+551
Add the port management commands that are sent as management messages. The port management commands are used for netdev operations. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add aeqsAviad Krawczyk5-2/+727
Handle aeq elements that are accumulated on the aeq by calling the registered handler for the specific event. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add api cmd commandsAviad Krawczyk3-2/+398
Add the api cmd commands for sending management messages to the nic. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Add management messagesAviad Krawczyk5-3/+538
Add the management messages for sending to api cmd and the asynchronous event handler for the completion of the messages. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Initialize api cmd hwAviad Krawczyk3-1/+236
Update the hardware about api cmd resources and initialize it. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Initialize api cmd resourcesAviad Krawczyk5-2/+563
Initialize api cmd resources as part of management initialization. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Initialize hw device componentsAviad Krawczyk8-14/+576
Initialize hw device by calling the initialization functions of aeqs and management channel. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net-next/hinic: Initialize hw interfaceAviad Krawczyk14-0/+1042
Initialize hw interface as part of the nic initialization for accessing hw. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22net: ethernet: stmmac: dwmac-rk: Add rv1108 gmac supportDavid Wu2-0/+54
It only supports rmii interface. Add constants and callback functions for the dwmac on rv1108 socs. As can be seen, the base structure is the same, only registers and the bits in them moved slightly. Signed-off-by: David Wu <david.wu@rock-chips.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22ethernet: xircom: small clean up in setup_xirc2ps_cs()Dan Carpenter1-1/+1
The get_options() function takes the whole ARRAY_SIZE(). It doesn't matter here because we don't use more than 7 elements. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22arm: eBPF JIT compilerShubham Bansal3-811/+1747
The JIT compiler emits ARM 32 bit instructions. Currently, It supports eBPF only. Classic BPF is supported because of the conversion by BPF core. This patch is essentially changing the current implementation of JIT compiler of Berkeley Packet Filter from classic to internal with almost all instructions from eBPF ISA supported except the following BPF_ALU64 | BPF_DIV | BPF_K BPF_ALU64 | BPF_DIV | BPF_X BPF_ALU64 | BPF_MOD | BPF_K BPF_ALU64 | BPF_MOD | BPF_X BPF_STX | BPF_XADD | BPF_W BPF_STX | BPF_XADD | BPF_DW Implementation is using scratch space to emulate 64 bit eBPF ISA on 32 bit ARM because of deficiency of general purpose registers on ARM. Currently, only LITTLE ENDIAN machines are supported in this eBPF JIT Compiler. Tested on ARMv7 with QEMU by me (Shubham Bansal). Testing results on ARMv7: 1) test_bpf: Summary: 341 PASSED, 0 FAILED, [312/333 JIT'ed] 2) test_tag: OK (40945 tests) 3) test_progs: Summary: 30 PASSED, 0 FAILED 4) test_lpm: OK 5) test_lru_map: OK Above tests are all done with following flags enabled discreatly. 1) bpf_jit_enable=1 a) CONFIG_FRAME_POINTER enabled b) CONFIG_FRAME_POINTER disabled 2) bpf_jit_enable=1 and bpf_jit_harden=2 a) CONFIG_FRAME_POINTER enabled b) CONFIG_FRAME_POINTER disabled See Documentation/networking/filter.txt for more information. Signed-off-by: Shubham Bansal <illusionist.neo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21sparc: kernel/pcic: silence gcc 7.x warning in pcibios_fixup_bus()Thomas Petazzoni1-1/+1
When building the kernel for Sparc using gcc 7.x, the build fails with: arch/sparc/kernel/pcic.c: In function ‘pcibios_fixup_bus’: arch/sparc/kernel/pcic.c:647:8: error: ‘cmd’ may be used uninitialized in this function [-Werror=maybe-uninitialized] cmd |= PCI_COMMAND_IO; ^~ The simplified code looks like this: unsigned int cmd; [...] pcic_read_config(dev->bus, dev->devfn, PCI_COMMAND, 2, &cmd); [...] cmd |= PCI_COMMAND_IO; I.e, the code assumes that pcic_read_config() will always initialize cmd. But it's not the case. Looking at pcic_read_config(), if bus->number is != 0 or if the size is not one of 1, 2 or 4, *val will not be initialized. As a simple fix, we initialize cmd to zero at the beginning of pcibios_fixup_bus. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21net: sched: Add the invalid handle check in qdisc_class_findGao Feng1-0/+3
Add the invalid handle "0" check to avoid unnecessary search, because the qdisc uses the skb->priority as the handle value to look up, and it is "0" usually. Signed-off-by: Gao Feng <gfree.wind@vip.163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21tipc: don't reset stale broadcast send linkJon Paul Maloy4-45/+17
When the broadcast send link after 100 attempts has failed to transfer a packet to all peers, we consider it stale, and reset it. Thereafter it needs to re-synchronize with the peers, something currently done by just resetting and re-establishing all links to all peers. This has turned out to be overkill, with potentially unwanted consequences for the remaining cluster. A closer analysis reveals that this can be done much simpler. When this kind of failure happens, for reasons that may lie outside the TIPC protocol, it is typically only one peer which is failing to receive and acknowledge packets. It is hence sufficient to identify and reset the links only to that peer to resolve the situation, without having to reset the broadcast link at all. This solution entails a much lower risk of negative consequences for the own node as well as for the overall cluster. We implement this change in this commit. Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21pids: make task_tgid_nr_ns() safeOleg Nesterov3-32/+34
This was reported many times, and this was even mentioned in commit 52ee2dfdd4f5 ("pids: refactor vnr/nr_ns helpers to make them safe") but somehow nobody bothered to fix the obvious problem: task_tgid_nr_ns() is not safe because task->group_leader points to nowhere after the exiting task passes exit_notify(), rcu_read_lock() can not help. We really need to change __unhash_process() to nullify group_leader, parent, and real_parent, but this needs some cleanups. Until then we can turn task_tgid_nr_ns() into another user of __task_pid_nr_ns() and fix the problem. Reported-by: Troy Kensinger <tkensinger@google.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-21net: check type when freeing metadata dstDavid Lamparter1-1/+2
Commit 3fcece12bc1b ("net: store port/representator id in metadata_dst") added a new type field to metadata_dst, but metadata_dst_free() wasn't updated to check it before freeing the METADATA_IP_TUNNEL specific dst cache entry. This is not currently causing problems since it's far enough back in the struct to be zeroed for the only other type currently in existance (METADATA_HW_PORT_MUX), but nevertheless it's not correct. Fixes: 3fcece12bc1b ("net: store port/representator id in metadata_dst") Signed-off-by: David Lamparter <equinox@diac24.net> Cc: Jakub Kicinski <jakub.kicinski@netronome.com> Cc: Sridhar Samudrala <sridhar.samudrala@intel.com> Cc: Simon Horman <horms@verge.net.au> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21net: ipv6: put host and anycast routes on device with addressDavid Ahern3-56/+47
One nagging difference between ipv4 and ipv6 is host routes for ipv6 addresses are installed using the loopback device or VRF / L3 Master device. e.g., 2001:db8:1::/120 dev veth0 proto kernel metric 256 pref medium local 2001:db8:1::1 dev lo table local proto kernel metric 0 pref medium Using the loopback device is convenient -- necessary for local tx, but has some nasty side effects, most notably setting the 'lo' device down causes all host routes for all local IPv6 address to be removed from the FIB and completely breaks IPv6 networking across all interfaces. This patch puts FIB entries for IPv6 routes against the device. This simplifies the routes in the FIB, for example by making dst->dev and rt6i_idev->dev the same (a future patch can look at removing the device reference taken for rt6i_idev for FIB entries). When copies are made on FIB lookups, the cloned route has dst->dev set to loopback (or the L3 master device). This is needed for the local Tx of packets to local addresses. With fib entries allocated against the real network device, the addrconf code that reinserts host routes on admin up of 'lo' is no longer needed. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21dsa: remove unused net_device arg from handlersFlorian Westphal10-21/+12
compile tested only, but saw no warnings/errors with allmodconfig build. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21MIPS,bpf: Cache value of BPF_OP(insn->code) in eBPF JIT.David Daney1-33/+34
The code looks a little cleaner if we replace BPF_OP(insn->code) with the local variable bpf_op. Caching the value this way also saves 300 bytes (about 1%) in the code size of the JIT. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21MIPS, bpf: Implement JLT, JLE, JSLT and JSLE ops in the eBPF JIT.David Daney1-29/+72
Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21MIPS,bpf: Fix using smp_processor_id() in preemptible splat.David Daney1-14/+14
If the kernel is configured with preemption enabled we were getting warning stack traces for use of current_cpu_type(). Fix by moving the test between preempt_disable()/preempt_enable() and caching the results of the CPU type tests for use during code generation. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21qlogic: make device_attribute constBhumika Goyal2-5/+5
Make these const as they are only passed as an argument to the function device_create_file and device_remove_file and the corresponding arguments are of type const. Done using Coccinelle Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-21rtc: ds1307: fix regmap configHeiner Kallweit1-1/+0
Current max_register setting breaks reading nvram on certain chips and also reading the standard registers on RX8130 where register map starts at 0x10. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Fixes: 11e5890b5342 "rtc: ds1307: convert driver to regmap" Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-08-20liquidio: fix use of pf in pass-through mode in a virtual machineRick Farrington2-5/+44
Fix problem when PF is used in pass-through mode in a VM (w/embedded f/w). If host error reading PF num from CN23XX_PCIE_SRIOV_FDL reg, try to retrieve PF num from SLI_PKT(0)_INPUT_CONTROL (initialized by f/w). Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20ipv6: repair fib6 tree in failure caseWei Wang1-13/+11
In fib6_add(), it is possible that fib6_add_1() picks an intermediate node and sets the node's fn->leaf to NULL in order to add this new route. However, if fib6_add_rt2node() fails to add the new route for some reason, fn->leaf will be left as NULL and could potentially cause crash when fn->leaf is accessed in fib6_locate(). This patch makes sure fib6_repair_tree() is called to properly repair fn->leaf in the above failure case. Here is the syzkaller reported general protection fault in fib6_locate: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Modules linked in: CPU: 0 PID: 40937 Comm: syz-executor3 Not tainted Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d7d64100 ti: ffff8801d01a0000 task.ti: ffff8801d01a0000 RIP: 0010:[<ffffffff82a3e0e1>] [<ffffffff82a3e0e1>] __ipv6_prefix_equal64_half include/net/ipv6.h:475 [inline] RIP: 0010:[<ffffffff82a3e0e1>] [<ffffffff82a3e0e1>] ipv6_prefix_equal include/net/ipv6.h:492 [inline] RIP: 0010:[<ffffffff82a3e0e1>] [<ffffffff82a3e0e1>] fib6_locate_1 net/ipv6/ip6_fib.c:1210 [inline] RIP: 0010:[<ffffffff82a3e0e1>] [<ffffffff82a3e0e1>] fib6_locate+0x281/0x3c0 net/ipv6/ip6_fib.c:1233 RSP: 0018:ffff8801d01a36a8 EFLAGS: 00010202 RAX: 0000000000000020 RBX: ffff8801bc790e00 RCX: ffffc90002983000 RDX: 0000000000001219 RSI: ffff8801d01a37a0 RDI: 0000000000000100 RBP: ffff8801d01a36f0 R08: 00000000000000ff R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff8801d01a37a0 R15: 0000000000000000 FS: 00007f6afd68c700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c6340 CR3: 00000000ba41f000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d01a37a8 ffff8801d01a3780 ffffed003a0346f5 0000000c82a23ea0 ffff8800b7bd7700 ffff8801d01a3780 ffff8800b6a1c940 ffffffff82a23ea0 ffff8801d01a3920 ffff8801d01a3748 ffffffff82a223d6 ffff8801d7d64988 Call Trace: [<ffffffff82a223d6>] ip6_route_del+0x106/0x570 net/ipv6/route.c:2109 [<ffffffff82a23f9d>] inet6_rtm_delroute+0xfd/0x100 net/ipv6/route.c:3075 [<ffffffff82621359>] rtnetlink_rcv_msg+0x549/0x7a0 net/core/rtnetlink.c:3450 [<ffffffff8274c1d1>] netlink_rcv_skb+0x141/0x370 net/netlink/af_netlink.c:2281 [<ffffffff82613ddf>] rtnetlink_rcv+0x2f/0x40 net/core/rtnetlink.c:3456 [<ffffffff8274ad38>] netlink_unicast_kernel net/netlink/af_netlink.c:1206 [inline] [<ffffffff8274ad38>] netlink_unicast+0x518/0x750 net/netlink/af_netlink.c:1232 [<ffffffff8274b83e>] netlink_sendmsg+0x8ce/0xc30 net/netlink/af_netlink.c:1778 [<ffffffff82564aff>] sock_sendmsg_nosec net/socket.c:609 [inline] [<ffffffff82564aff>] sock_sendmsg+0xcf/0x110 net/socket.c:619 [<ffffffff82564d62>] sock_write_iter+0x222/0x3a0 net/socket.c:834 [<ffffffff8178523d>] new_sync_write+0x1dd/0x2b0 fs/read_write.c:478 [<ffffffff817853f4>] __vfs_write+0xe4/0x110 fs/read_write.c:491 [<ffffffff81786c38>] vfs_write+0x178/0x4b0 fs/read_write.c:538 [<ffffffff817892a9>] SYSC_write fs/read_write.c:585 [inline] [<ffffffff817892a9>] SyS_write+0xd9/0x1b0 fs/read_write.c:577 [<ffffffff82c71e32>] entry_SYSCALL_64_fastpath+0x12/0x17 Note: there is no "Fixes" tag as this seems to be a bug introduced very early. Signed-off-by: Wei Wang <weiwan@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20net: dsa: mv88e6xxx: make irq_chip constBhumika Goyal2-2/+2
Make this const as it is only used in a copy operation. Done using Coccinelle. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20net_sched: fix order of queue length updates in qdisc_replace()Konstantin Khlebnikov1-1/+4
This important to call qdisc_tree_reduce_backlog() after changing queue length. Parent qdisc should deactivate class in ->qlen_notify() called from qdisc_tree_reduce_backlog() but this happens only if qdisc->q.qlen in zero. Missed class deactivations leads to crashes/warnings at picking packets from empty qdisc and corrupting state at reactivating this class in future. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: 86a7996cc8a0 ("net_sched: introduce qdisc_replace() helper") Acked-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20net: ibm: emac: Fix some error handling path in 'emac_probe()'Christophe Jaillet2-9/+4
If 'irq_of_parse_and_map()' or 'of_address_to_resource()' fail, 'err' is known to be 0 at this point. So return -ENODEV instead in the first case and use 'of_iomap()' instead of the equivalent 'of_address_to_resource()/ioremap()' combinaison in the 2nd case. Doing so, the 'rsrc_regs' field of the 'emac_instance struct' becomes redundant and is removed. While at it, turn a 'err != 0' test into an equivalent 'err' to be more consistent. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20cxgb4/cxgbvf: Handle 32-bit fw port capabilitiesGanesh Goudar8-356/+1220
Implement new 32-bit Firmware Port Capabilities in order to handle new speeds which couldn't be represented in the old 16-bit Firmware Port Capabilities values. Based on the original work of Casey Leedom <leedom@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20tools lib bpf: improve warningEric Leblond1-1/+2
Signed-off-by: Eric Leblond <eric@regit.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20switchdev: documentation: minor typo fixesChris Packham1-2/+2
Two typos in switchdev.txt Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20bpf: fix double free from dev_map_notification()Daniel Borkmann1-7/+5
In the current code, dev_map_free() can still race with dev_map_notification(). In dev_map_free(), we remove dtab from the list of dtabs after we purged all entries from it. However, we don't do xchg() with NULL or the like, so the entry at that point is still pointing to the device. If a unregister notification comes in at the same time, we therefore risk a double-free, since the pointer is still present in the map, and then pushed again to __dev_map_entry_free(). All this is completely unnecessary. Just remove the dtab from the list right before the synchronize_rcu(), so all outstanding readers from the notifier list have finished by then, thus we don't need to deal with this corner case anymore and also wouldn't need to nullify dev entires. This is fine because we iterate over the map releasing all entries and therefore dev references anyway. Fixes: 4cc7b9544b9a ("bpf: devmap fix mutex in rcu critical section") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20bpf, doc: also add s390x as arch to sysctl descriptionDaniel Borkmann1-0/+1
Looks like this was accidentally missed, so still add s390x as supported eBPF JIT arch to bpf_jit_enable. Fixes: 014cd0a368dc ("bpf: Update sysctl documentation to list all supported architectures") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-20Linux 4.13-rc6Linus Torvalds1-1/+1
2017-08-20Sanitize 'move_pages()' permission checksLinus Torvalds1-8/+3
The 'move_paghes()' system call was introduced long long ago with the same permission checks as for sending a signal (except using CAP_SYS_NICE instead of CAP_SYS_KILL for the overriding capability). That turns out to not be a great choice - while the system call really only moves physical page allocations around (and you need other capabilities to do a lot of it), you can check the return value to map out some the virtual address choices and defeat ASLR of a binary that still shares your uid. So change the access checks to the more common 'ptrace_may_access()' model instead. This tightens the access checks for the uid, and also effectively changes the CAP_SYS_NICE check to CAP_SYS_PTRACE, but it's unlikely that anybody really _uses_ this legacy system call any more (we hav ebetter NUMA placement models these days), so I expect nobody to notice. Famous last words. Reported-by: Otto Ebeling <otto.ebeling@iki.fi> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Willy Tarreau <w@1wt.eu> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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