linux-stable.git/tools/include/uapi, branch linux-4.20.y

bpf: pull in pkt_sched.h header for tooling to fix bpftool build

2019-02-27T09:09:51+00:00

[ Upstream commit ad6dd7a9c47ba587c0aba57f73737764cd31136f ]

Dan reported that bpftool does not compile for him:

  $ make tools/bpf
    DESCEND  bpf

  Auto-detecting system features:
  ..                        libbfd: [ on  ]
  ..        disassembler-four-args: [ OFF ]

    DESCEND  bpftool

  Auto-detecting system features:
  ..                        libbfd: [ on  ]
  ..        disassembler-four-args: [ OFF ]

    CC       /opt/linux.git/tools/bpf/bpftool/net.o
  In file included from /opt/linux.git/tools/include/uapi/linux/pkt_cls.h:6:0,
                 from /opt/linux.git/tools/include/uapi/linux/tc_act/tc_bpf.h:14,
                 from net.c:13:
  net.c: In function 'show_dev_tc_bpf':
  net.c:164:21: error: 'TC_H_CLSACT' undeclared (first use in this function)
    handle = TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS);
  [...]

Fix it by importing pkt_sched.h header copy into tooling
infrastructure.

Fixes: 49a249c38726 ("tools/bpftool: copy a few net uapi headers to tools directory")
Fixes: f6f3bac08ff9 ("tools/bpf: bpftool: add net support")
Reported-by: Dan Gilson 
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=202315
Signed-off-by: Daniel Borkmann 
Acked-by: Martin KaFai Lau 
Signed-off-by: Alexei Starovoitov 
Signed-off-by: Sasha Levin

tools uapi: fix Alpha support

2019-02-20T09:29:11+00:00

commit 842fc0f5dc5c9f9bd91f891554996d903c40cf35 upstream.

Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Bob Tracy 
Signed-off-by: Matt Turner 
Signed-off-by: Greg Kroah-Hartman

tools uapi: fix RISC-V 64-bit support

2019-02-20T09:29:02+00:00

[ Upstream commit d0df00e30e4bf9bc27ddbd092ad683ff6121b360 ]

The BPF library is not built on 64-bit RISC-V, as the BPF feature is
not detected. Looking more in details, feature/test-bpf.c fails to build
with the following error:

| In file included from /tmp/linux-4.19.12/tools/include/uapi/asm/bitsperlong.h:17,
|                  from /tmp/linux-4.19.12/tools/include/uapi/asm-generic/unistd.h:2,
|                  from /usr/include/riscv64-linux-gnu/asm/unistd.h:1,
|                  from test-bpf.c:2:
| /tmp/linux-4.19.12/tools/include/asm-generic/bitsperlong.h:14:2: error: #error Inconsistent word size. Check asm/bitsperlong.h
|  #error Inconsistent word size. Check asm/bitsperlong.h
|   ^~~~~

The UAPI from the tools directory is missing RISC-V support, therefore
bitsperlong.h from asm-generic is used, defaulting to 32 bits.

Fix that by adding tools/arch/riscv/include/uapi/asm/bitsperlong.h as
a copy of arch/riscv/include/uapi/asm/bitsperlong.h and by updating
tools/include/uapi/asm/bitsperlong.h.

Signed-off-by: Aurelien Jarno 
Signed-off-by: Palmer Dabbelt 
Signed-off-by: Sasha Levin

net: netlink: rename NETLINK_DUMP_STRICT_CHK -> NETLINK_GET_STRICT_CHK

2018-12-14T19:44:31+00:00

NETLINK_DUMP_STRICT_CHK can be used for all GET requests,
dumps as well as doit handlers.  Replace the DUMP in the
name with GET make that clearer.

Signed-off-by: Jakub Kicinski 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-12-09T23:12:33+00:00

Pull networking fixes from David Miller:
 "A decent batch of fixes here. I'd say about half are for problems that
  have existed for a while, and half are for new regressions added in
  the 4.20 merge window.

   1) Fix 10G SFP phy module detection in mvpp2, from Baruch Siach.

   2) Revert bogus emac driver change, from Benjamin Herrenschmidt.

   3) Handle BPF exported data structure with pointers when building
      32-bit userland, from Daniel Borkmann.

   4) Memory leak fix in act_police, from Davide Caratti.

   5) Check RX checksum offload in RX descriptors properly in aquantia
      driver, from Dmitry Bogdanov.

   6) SKB unlink fix in various spots, from Edward Cree.

   7) ndo_dflt_fdb_dump() only works with ethernet, enforce this, from
      Eric Dumazet.

   8) Fix FID leak in mlxsw driver, from Ido Schimmel.

   9) IOTLB locking fix in vhost, from Jean-Philippe Brucker.

  10) Fix SKB truesize accounting in ipv4/ipv6/netfilter frag memory
      limits otherwise namespace exit can hang. From Jiri Wiesner.

  11) Address block parsing length fixes in x25 from Martin Schiller.

  12) IRQ and ring accounting fixes in bnxt_en, from Michael Chan.

  13) For tun interfaces, only iface delete works with rtnl ops, enforce
      this by disallowing add. From Nicolas Dichtel.

  14) Use after free in liquidio, from Pan Bian.

  15) Fix SKB use after passing to netif_receive_skb(), from Prashant
      Bhole.

  16) Static key accounting and other fixes in XPS from Sabrina Dubroca.

  17) Partially initialized flow key passed to ip6_route_output(), from
      Shmulik Ladkani.

  18) Fix RTNL deadlock during reset in ibmvnic driver, from Thomas
      Falcon.

  19) Several small TCP fixes (off-by-one on window probe abort, NULL
      deref in tail loss probe, SNMP mis-estimations) from Yuchung
      Cheng"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (93 commits)
  net/sched: cls_flower: Reject duplicated rules also under skip_sw
  bnxt_en: Fix _bnxt_get_max_rings() for 57500 chips.
  bnxt_en: Fix NQ/CP rings accounting on the new 57500 chips.
  bnxt_en: Keep track of reserved IRQs.
  bnxt_en: Fix CNP CoS queue regression.
  net/mlx4_core: Correctly set PFC param if global pause is turned off.
  Revert "net/ibm/emac: wrong bit is used for STA control"
  neighbour: Avoid writing before skb->head in neigh_hh_output()
  ipv6: Check available headroom in ip6_xmit() even without options
  tcp: lack of available data can also cause TSO defer
  ipv6: sr: properly initialize flowi6 prior passing to ip6_route_output
  mlxsw: spectrum_switchdev: Fix VLAN device deletion via ioctl
  mlxsw: spectrum_router: Relax GRE decap matching check
  mlxsw: spectrum_switchdev: Avoid leaking FID's reference count
  mlxsw: spectrum_nve: Remove easily triggerable warnings
  ipv4: ipv6: netfilter: Adjust the frag mem limit when truesize changes
  sctp: frag_point sanity check
  tcp: fix NULL ref in tail loss probe
  tcp: Do not underestimate rwnd_limited
  net: use skb_list_del_init() to remove from RX sublists
  ...

Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-12-01T20:35:48+00:00

Pull STIBP fallout fixes from Thomas Gleixner:
 "The performance destruction department finally got it's act together
  and came up with a cure for the STIPB regression:

   - Provide a command line option to control the spectre v2 user space
     mitigations. Default is either seccomp or prctl (if seccomp is
     disabled in Kconfig). prctl allows mitigation opt-in, seccomp
     enables the migitation for sandboxed processes.

   - Rework the code to handle the conditional STIBP/IBPB control and
     remove the now unused ptrace_may_access_sched() optimization
     attempt

   - Disable STIBP automatically when SMT is disabled

   - Optimize the switch_to() logic to avoid MSR writes and invocations
     of __switch_to_xtra().

   - Make the asynchronous speculation TIF updates synchronous to
     prevent stale mitigation state.

  As a general cleanup this also makes retpoline directly depend on
  compiler support and removes the 'minimal retpoline' option which just
  pretended to provide some form of security while providing none"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  x86/speculation: Provide IBPB always command line options
  x86/speculation: Add seccomp Spectre v2 user space protection mode
  x86/speculation: Enable prctl mode for spectre_v2_user
  x86/speculation: Add prctl() control for indirect branch speculation
  x86/speculation: Prepare arch_smt_update() for PRCTL mode
  x86/speculation: Prevent stale SPEC_CTRL msr content
  x86/speculation: Split out TIF update
  ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS
  x86/speculation: Prepare for conditional IBPB in switch_mm()
  x86/speculation: Avoid __switch_to_xtra() calls
  x86/process: Consolidate and simplify switch_to_xtra() code
  x86/speculation: Prepare for per task indirect branch speculation control
  x86/speculation: Add command line control for indirect branch speculation
  x86/speculation: Unify conditional spectre v2 print functions
  x86/speculataion: Mark command line parser data __initdata
  x86/speculation: Mark string arrays const correctly
  x86/speculation: Reorder the spec_v2 code
  x86/l1tf: Show actual SMT state
  x86/speculation: Rework SMT state change
  sched/smt: Expose sched_smt_present static key
  ...

bpf: Improve socket lookup reuseport documentation

2018-12-01T01:17:38+00:00

Improve the wording around socket lookup for reuseport sockets, and
ensure that both bpf.h headers are in sync.

Signed-off-by: Joe Stringer 
Signed-off-by: Alexei Starovoitov

bpf: Support sk lookup in netns with id 0

2018-12-01T01:17:38+00:00

David Ahern and Nicolas Dichtel report that the handling of the netns id
0 is incorrect for the BPF socket lookup helpers: rather than finding
the netns with id 0, it is resolving to the current netns. This renders
the netns_id 0 inaccessible.

To fix this, adjust the API for the netns to treat all negative s32
values as a lookup in the current netns (including u64 values which when
truncated to s32 become negative), while any values with a positive
value in the signed 32-bit integer space would result in a lookup for a
socket in the netns corresponding to that id. As before, if the netns
with that ID does not exist, no socket will be found. Any netns outside
of these ranges will fail to find a corresponding socket, as those
values are reserved for future usage.

Signed-off-by: Joe Stringer 
Acked-by: Nicolas Dichtel 
Acked-by: Joey Pabalinas 
Signed-off-by: Alexei Starovoitov

bpf: fix pointer offsets in context for 32 bit

2018-12-01T01:04:35+00:00

Currently, pointer offsets in three BPF context structures are
broken in two scenarios: i) 32 bit compiled applications running
on 64 bit kernels, and ii) LLVM compiled BPF programs running
on 32 bit kernels. The latter is due to BPF target machine being
strictly 64 bit. So in each of the cases the offsets will mismatch
in verifier when checking / rewriting context access. Fix this by
providing a helper macro __bpf_md_ptr() that will enforce padding
up to 64 bit and proper alignment, and for context access a macro
bpf_ctx_range_ptr() which will cover full 64 bit member range on
32 bit archs. For flow_keys, we additionally need to force the
size check to sizeof(__u64) as with other pointer types.

Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook")
Fixes: 4f738adba30a ("bpf: create tcp_bpf_ulp allowing BPF to monitor socket TX/RX data")
Fixes: 2dbb9b9e6df6 ("bpf: Introduce BPF_PROG_TYPE_SK_REUSEPORT")
Reported-by: David S. Miller 
Signed-off-by: Daniel Borkmann 
Acked-by: David S. Miller 
Tested-by: David S. Miller 
Signed-off-by: Alexei Starovoitov

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-11-30T19:31:48+00:00

Pull perf fixes from Ingo Molnar:
 "Misc fixes:

   - counter freezing related regression fix

   - uprobes race fix

   - Intel PMU unusual event combination fix

   - .. and diverse tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  uprobes: Fix handle_swbp() vs. unregister() + register() race once more
  perf/x86/intel: Disallow precise_ip on BTS events
  perf/x86/intel: Add generic branch tracing check to intel_pmu_has_bts()
  perf/x86/intel: Move branch tracing setup to the Intel-specific source file
  perf/x86/intel: Fix regression by default disabling perfmon v4 interrupt handling
  perf tools beauty ioctl: Support new ISO7816 commands
  tools uapi asm-generic: Synchronize ioctls.h
  tools arch x86: Update tools's copy of cpufeatures.h
  tools headers uapi: Synchronize i915_drm.h
  perf tools: Restore proper cwd on return from mnt namespace
  tools build feature: Check if get_current_dir_name() is available
  perf tools: Fix crash on synthesizing the unit