Commit Graph

134629 Commits

Author SHA1 Message Date
Toke Høiland-Jørgensen
1372d34ccf xdp: Add xdp_do_redirect_frame() for pre-computed xdp_frames
Add an xdp_do_redirect_frame() variant which supports pre-computed
xdp_frame structures. This will be used in bpf_prog_run() to avoid having
to write to the xdp_frame structure when the XDP program doesn't modify the
frame boundaries.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103150812.87914-6-toke@redhat.com
2022-01-05 19:46:32 -08:00
Toke Høiland-Jørgensen
d53ad5d8b2 xdp: Move conversion to xdp_frame out of map functions
All map redirect functions except XSK maps convert xdp_buff to xdp_frame
before enqueueing it. So move this conversion of out the map functions
and into xdp_do_redirect(). This removes a bit of duplicated code, but more
importantly it makes it possible to support caller-allocated xdp_frame
structures, which will be added in a subsequent commit.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103150812.87914-5-toke@redhat.com
2022-01-05 19:46:32 -08:00
Toke Høiland-Jørgensen
64693ec777 page_pool: Store the XDP mem id
Store the XDP mem ID inside the page_pool struct so it can be retrieved
later for use in bpf_prog_run().

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20220103150812.87914-4-toke@redhat.com
2022-01-05 19:46:32 -08:00
Toke Høiland-Jørgensen
35b2e54989 page_pool: Add callback to init pages when they are allocated
Add a new callback function to page_pool that, if set, will be called every
time a new page is allocated. This will be used from bpf_test_run() to
initialise the page data with the data provided by userspace when running
XDP programs with redirect turned on.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20220103150812.87914-3-toke@redhat.com
2022-01-05 19:46:32 -08:00
Toke Høiland-Jørgensen
4a48ef70b9 xdp: Allow registering memory model without rxq reference
The functions that register an XDP memory model take a struct xdp_rxq as
parameter, but the RXQ is not actually used for anything other than pulling
out the struct xdp_mem_info that it embeds. So refactor the register
functions and export variants that just take a pointer to the xdp_mem_info.

This is in preparation for enabling XDP_REDIRECT in bpf_prog_run(), using a
page_pool instance that is not connected to any network device.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103150812.87914-2-toke@redhat.com
2022-01-05 19:46:32 -08:00
Russell King (Oracle)
c6af53f038 net: mdio: add helpers to extract clause 45 regad and devad fields
Add a couple of helpers and definitions to extract the clause 45 regad
and devad fields from the regnum passed into MDIO drivers.

Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-05 11:22:17 +00:00
Felix Fietkau
5bc03b28ec nl80211: clarify comment for mesh PLINK_BLOCKED state
When a mesh link is in blocked state, it is very useful to still allow
auth requests from the peer to re-establish it.
When a remote node is power cycled, the peer state can easily end up
in blocked state if multiple auth attempts are performed. Since this
can lead to several minutes of downtime, we should accept auth attempts
of the peer after it has come back.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211220105147.88625-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-01-04 15:50:23 +01:00
Martin Blumenstingl
acb99b9b2a mac80211: Add stations iterator where the iterator function may sleep
ieee80211_iterate_active_interfaces() and
ieee80211_iterate_active_interfaces_atomic() already exist, where the
former allows the iterator function to sleep. Add
ieee80211_iterate_stations() which is similar to
ieee80211_iterate_stations_atomic() but allows the iterator to sleep.
This is needed for adding SDIO support to the rtw88 driver. Some
interators there are reading or writing registers. With the SDIO ops
(sdio_readb, sdio_writeb and friends) this means that the iterator
function may sleep.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211228211501.468981-2-martin.blumenstingl@googlemail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-01-04 15:47:15 +01:00
xu xin
1135fad204 Namespaceify mtu_expires sysctl
This patch enables the sysctl mtu_expires to be configured per net
namespace.

Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-04 12:40:22 +00:00
xu xin
1de6b15a43 Namespaceify min_pmtu sysctl
This patch enables the sysctl min_pmtu to be configured per net
namespace.

Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-04 12:40:22 +00:00
Paul Blakey
9795ded7f9 net/sched: act_ct: Fill offloading tuple iifidx
Driver offloading ct tuples can use the information of which devices
received the packets that created the offloaded connections, to
more efficiently offload them only to the relevant device.

Add new act_ct nf conntrack extension, which is used to store the skb
devices before offloading the connection, and then fill in the tuple
iifindex so drivers can get the device via metadata dissector match.

Signed-off-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-04 12:12:55 +00:00
Colin Foster
e7026f1556 net: phy: lynx: refactor Lynx PCS module to use generic phylink_pcs
Remove references to lynx_pcs structures so drivers like the Felix DSA
can reference alternate PCS drivers.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-02 18:48:47 +00:00
Tony Lu
79d39fc503 net/smc: Add netlink net namespace support
This adds net namespace ID to diag of linkgroup, helps us to distinguish
different namespaces, and net_cookie is unique in the whole system.

Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-02 12:07:39 +00:00
David S. Miller
e63a023489 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:

====================
pull-request: bpf-next 2021-12-30

The following pull-request contains BPF updates for your *net-next* tree.

We've added 72 non-merge commits during the last 20 day(s) which contain
a total of 223 files changed, 3510 insertions(+), 1591 deletions(-).

The main changes are:

1) Automatic setrlimit in libbpf when bpf is memcg's in the kernel, from Andrii.

2) Beautify and de-verbose verifier logs, from Christy.

3) Composable verifier types, from Hao.

4) bpf_strncmp helper, from Hou.

5) bpf.h header dependency cleanup, from Jakub.

6) get_func_[arg|ret|arg_cnt] helpers, from Jiri.

7) Sleepable local storage, from KP.

8) Extend kfunc with PTR_TO_CTX, PTR_TO_MEM argument support, from Kumar.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-31 14:35:40 +00:00
Yevgeny Kliteynik
4ff725e1d4 net/mlx5: DR, Ignore modify TTL if device doesn't support it
When modifying TTL, packet's csum has to be recalculated.
Due to HW issue in ConnectX-5, csum recalculation for modify TTL
is supported through a work-around that is specifically enabled
by configuration.
If the work-around isn't enabled, ignore the modify TTL action
rather than adding an unsupported action.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
2021-12-31 00:17:41 -08:00
Yevgeny Kliteynik
f59464e257 net/mlx5: DR, Add support for matching on geneve_tlv_option_0_exist field
Match on geneve_tlv_option_0_exist field on devices that support STEv1.

Signed-off-by: Muhammad Sammar <muhammads@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
2021-12-31 00:17:34 -08:00
Muhammad Sammar
0f2a6c3b92 net/mlx5: Add misc5 flow table match parameters
Add support for misc5 match parameter as per HW spec, this will allow
matching on tunnel_header fields.

Signed-off-by: Muhammad Sammar <muhammads@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
2021-12-31 00:17:23 -08:00
Yevgeny Kliteynik
c3fb0e280b net/mlx5: DR, Fix lower case macro prefix "mlx5_" to "MLX5_"
Macros prefix should be capital letters - fix the prefix in
mlx5_FLEX_PARSER_MPLS_OVER_UDP_ENABLED.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
2021-12-31 00:16:56 -08:00
Lukas Bulwahn
d6c6d0bb2c net: remove references to CONFIG_IRDA in network header files
Commit d64c2a7612 ("staging: irda: remove the irda network stack and
drivers") removes the config IRDA.

Remove the remaining references to this non-existing config in the network
header files.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20211229113620.19368-1-lukas.bulwahn@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-30 17:27:44 -08:00
Jakub Kicinski
aec53e60e0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
  commit 077cdda764 ("net/mlx5e: TC, Fix memory leak with rules with internal port")
  commit 31108d142f ("net/mlx5: Fix some error handling paths in 'mlx5e_tc_add_fdb_flow()'")
  commit 4390c6edc0 ("net/mlx5: Fix some error handling paths in 'mlx5e_tc_add_fdb_flow()'")
  https://lore.kernel.org/all/20211229065352.30178-1-saeed@kernel.org/

net/smc/smc_wr.c
  commit 49dc9013e3 ("net/smc: Use the bitmap API when applicable")
  commit 349d43127d ("net/smc: fix kernel panic caused by race of smc_sock")
  bitmap_zero()/memset() is removed by the fix

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-30 12:12:12 -08:00
Linus Torvalds
74c78b4291 Merge tag 'net-5.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
 "Including fixes from.. Santa?

  No regressions on our radar at this point. The igc problem fixed here
  was the last one I was tracking but it was broken in previous
  releases, anyway. Mostly driver fixes and a couple of largish SMC
  fixes.

  Current release - regressions:

   - xsk: initialise xskb free_list_node, fixup for a -rc7 fix

  Current release - new code bugs:

   - mlx5: handful of minor fixes:

   - use first online CPU instead of hard coded CPU

   - fix some error handling paths in 'mlx5e_tc_add_fdb_flow()'

   - fix skb memory leak when TC classifier action offloads are disabled

   - fix memory leak with rules with internal OvS port

  Previous releases - regressions:

   - igc: do not enable crosstimestamping for i225-V models

  Previous releases - always broken:

   - udp: use datalen to cap ipv6 udp max gso segments

   - fix use-after-free in tw_timer_handler due to early free of stats

   - smc: fix kernel panic caused by race of smc_sock

   - smc: don't send CDC/LLC message if link not ready, avoid timeouts

   - sctp: use call_rcu to free endpoint, avoid UAF in sock diag

   - bridge: mcast: add and enforce query interval minimum

   - usb: pegasus: do not drop long Ethernet frames

   - mlx5e: fix ICOSQ recovery flow for XSK

   - nfc: uapi: use kernel size_t to fix user-space builds"

* tag 'net-5.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
  fsl/fman: Fix missing put_device() call in fman_port_probe
  selftests: net: using ping6 for IPv6 in udpgro_fwd.sh
  Documentation: fix outdated interpretation of ip_no_pmtu_disc
  net/ncsi: check for error return from call to nla_put_u32
  net: bridge: mcast: fix br_multicast_ctx_vlan_global_disabled helper
  net: fix use-after-free in tw_timer_handler
  selftests: net: Fix a typo in udpgro_fwd.sh
  selftests/net: udpgso_bench_tx: fix dst ip argument
  net: bridge: mcast: add and enforce startup query interval minimum
  net: bridge: mcast: add and enforce query interval minimum
  ipv6: raw: check passed optlen before reading
  xsk: Initialise xskb free_list_node
  net/mlx5e: Fix wrong features assignment in case of error
  net/mlx5e: TC, Fix memory leak with rules with internal port
  ionic: Initialize the 'lif->dbid_inuse' bitmap
  igc: Fix TX timestamp support for non-MSI-X platforms
  igc: Do not enable crosstimestamping for i225-V models
  net/smc: fix kernel panic caused by race of smc_sock
  net/smc: don't send CDC/LLC message if link not ready
  NFC: st21nfca: Fix memory leak in device probe and remove
  ...
2021-12-30 11:12:12 -08:00
Jakub Kicinski
aebb51ec3d bpf: Invert the dependency between bpf-netns.h and netns/bpf.h
netns/bpf.h gets included by netdevice.h (thru net_namespace.h)
which in turn gets included in a lot of places. We should keep
netns/bpf.h as light-weight as possible.

bpf-netns.h seems to contain more implementation details than
deserves to be included in a netns header. It needs to pull in
uapi/bpf.h to get various enum types.

Move enum netns_bpf_attach_type to netns/bpf.h and invert the
dependency. This makes netns/bpf.h fit the mold of a struct
definition header more clearly, and drops the number of objects
rebuilt when uapi/bpf.h is touched from 7.7k to 1.1k.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230012742.770642-3-kuba@kernel.org
2021-12-29 20:03:05 -08:00
Jakub Kicinski
3b80b73a4b net: Add includes masked by netdevice.h including uapi/bpf.h
Add missing includes unmasked by the subsequent change.

Mostly network drivers missing an include for XDP_PACKET_HEADROOM.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211230012742.770642-2-kuba@kernel.org
2021-12-29 20:03:05 -08:00
KP Singh
0fe4b381a5 bpf: Allow bpf_local_storage to be used by sleepable programs
Other maps like hashmaps are already available to sleepable programs.
Sleepable BPF programs run under trace RCU. Allow task, sk and inode
storage to be used from sleepable programs. This allows sleepable and
non-sleepable programs to provide shareable annotations on kernel
objects.

Sleepable programs run in trace RCU where as non-sleepable programs run
in a normal RCU critical section i.e.  __bpf_prog_enter{_sleepable}
and __bpf_prog_exit{_sleepable}) (rcu_read_lock or rcu_read_lock_trace).

In order to make the local storage maps accessible to both sleepable
and non-sleepable programs, one needs to call both
call_rcu_tasks_trace and call_rcu to wait for both trace and classical
RCU grace periods to expire before freeing memory.

Paul's work on call_rcu_tasks_trace allows us to have per CPU queueing
for call_rcu_tasks_trace. This behaviour can be achieved by setting
rcupdate.rcu_task_enqueue_lim=<num_cpus> boot parameter.

In light of these new performance changes and to keep the local storage
code simple, avoid adding a new flag for sleepable maps / local storage
to select the RCU synchronization (trace / classical).

Also, update the dereferencing of the pointers to use
rcu_derference_check (with either the trace or normal RCU locks held)
with a common bpf_rcu_lock_held helper method.

Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20211224152916.1550677-2-kpsingh@kernel.org
2021-12-29 17:54:40 -08:00
Jakub Kicinski
e2dfb94f27 Merge tag 'for-net-next-2021-12-29' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:

====================
bluetooth-next pull request for net-next:

 - Add support for Foxconn MT7922A
 - Add support for Realtek RTL8852AE
 - Rework HCI event handling to use skb_pull_data

* tag 'for-net-next-2021-12-29' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (62 commits)
  Bluetooth: MGMT: Fix spelling mistake "simultanous" -> "simultaneous"
  Bluetooth: vhci: Set HCI_QUIRK_VALID_LE_STATES
  Bluetooth: MGMT: Fix LE simultaneous roles UUID if not supported
  Bluetooth: hci_sync: Add check simultaneous roles support
  Bluetooth: hci_sync: Wait for proper events when connecting LE
  Bluetooth: hci_sync: Add support for waiting specific LE subevents
  Bluetooth: hci_sync: Add hci_le_create_conn_sync
  Bluetooth: hci_event: Use skb_pull_data when processing inquiry results
  Bluetooth: hci_sync: Push sync command cancellation to workqueue
  Bluetooth: hci_qca: Stop IBS timer during BT OFF
  Bluetooth: btusb: Add support for Foxconn MT7922A
  Bluetooth: btintel: Add missing quirks and msft ext for legacy bootloader
  Bluetooth: btusb: Add two more Bluetooth parts for WCN6855
  Bluetooth: L2CAP: Fix using wrong mode
  Bluetooth: hci_sync: Fix not always pausing advertising when necessary
  Bluetooth: mgmt: Make use of mgmt_send_event_skb in MGMT_EV_DEVICE_CONNECTED
  Bluetooth: mgmt: Make use of mgmt_send_event_skb in MGMT_EV_DEVICE_FOUND
  Bluetooth: mgmt: Introduce mgmt_alloc_skb and mgmt_send_event_skb
  Bluetooth: btusb: Return error code when getting patch status failed
  Bluetooth: btusb: Handle download_firmware failure cases
  ...
====================

Link: https://lore.kernel.org/r/20211229211258.2290966-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-29 14:14:38 -08:00
Hangbin Liu
1bb412d46c net_tstamp: define new flag HWTSTAMP_FLAG_BONDED_PHC_INDEX
As we defined the new hwtstamp_config flag HWTSTAMP_FLAG_BONDED_PHC_INDEX
as enum, it's not easy for userspace program to check if the flag is
supported when build.

Let's define the new flag so user space could build it on old kernel with
ifdef check.

Fixes: 9c9211a3fc ("net_tstamp: add new flag HWTSTAMP_FLAG_BONDED_PHC_INDEX")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-29 12:31:36 -08:00
Jakub Kicinski
b6459415b3 net: Don't include filter.h from net/sock.h
sock.h is pretty heavily used (5k objects rebuilt on x86 after
it's touched). We can drop the include of filter.h from it and
add a forward declaration of struct sk_filter instead.
This decreases the number of rebuilt objects when bpf.h
is touched from ~5k to ~1k.

There's a lot of missing includes this was masking. Primarily
in networking tho, this time.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/bpf/20211229004913.513372-1-kuba@kernel.org
2021-12-29 08:48:14 -08:00
Linus Torvalds
a8ad9a2434 Merge tag 'efi-urgent-for-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fix from Ard Biesheuvel:
 "Another EFI fix for v5.16:

   - Prevent missing prototype warning from breaking the build under
     CONFIG_WERROR=y"

* tag 'efi-urgent-for-v5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Move efifb_setup_from_dmi() prototype from arch headers
2021-12-27 08:58:35 -08:00
Krzysztof Kozlowski
79b69a8370 nfc: uapi: use kernel size_t to fix user-space builds
Fix user-space builds if it includes /usr/include/linux/nfc.h before
some of other headers:

  /usr/include/linux/nfc.h:281:9: error: unknown type name ‘size_t’
    281 |         size_t service_name_len;
        |         ^~~~~~

Fixes: d646960f79 ("NFC: Initial LLCP support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-27 14:58:37 +00:00
Dmitry V. Levin
7175f02c4e uapi: fix linux/nfc.h userspace compilation errors
Replace sa_family_t with __kernel_sa_family_t to fix the following
linux/nfc.h userspace compilation errors:

/usr/include/linux/nfc.h:266:2: error: unknown type name 'sa_family_t'
  sa_family_t sa_family;
/usr/include/linux/nfc.h:274:2: error: unknown type name 'sa_family_t'
  sa_family_t sa_family;

Fixes: 23b7869c0f ("NFC: add the NFC socket raw protocol")
Fixes: d646960f79 ("NFC: Initial LLCP support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-27 14:58:03 +00:00
Linus Torvalds
2afa90bd1c Merge tag 'objtool_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:

 - Prevent clang from reordering the reachable annotation in
   an inline asm statement without inputs

 - Fix objtool builds on non-glibc systems due to undefined
   __always_inline

* tag 'objtool_urgent_for_v5.16_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compiler.h: Fix annotation macro misplacement with Clang
  uapi: Fix undefined __always_inline on non-glibc systems
2021-12-26 10:19:40 -08:00
Linus Torvalds
d0cc67b278 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "9 patches.

  Subsystems affected by this patch series: mm (kfence, mempolicy,
  memory-failure, pagemap, pagealloc, damon, and memory-failure),
  core-kernel, and MAINTAINERS"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()
  mm/damon/dbgfs: protect targets destructions with kdamond_lock
  mm/page_alloc: fix __alloc_size attribute for alloc_pages_exact_nid
  mm: delete unsafe BUG from page_cache_add_speculative()
  mm, hwpoison: fix condition in free hugetlb page path
  MAINTAINERS: mark more list instances as moderated
  kernel/crash_core: suppress unknown crashkernel parameter warning
  mm: mempolicy: fix THP allocations escaping mempolicy restrictions
  kfence: fix memory leak when cat kfence objects
2021-12-25 12:30:03 -08:00
Thibaut Sautereau
595ec1973c mm/page_alloc: fix __alloc_size attribute for alloc_pages_exact_nid
The second parameter of alloc_pages_exact_nid is the one indicating the
size of memory pointed by the returned pointer.

Link: https://lkml.kernel.org/r/YbjEgwhn4bGblp//@coeus
Fixes: abd58f38df ("mm/page_alloc: add __alloc_size attributes for better bounds checking")
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Cc: Levente Polyak <levente@leventepolyak.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:56 -08:00
Hugh Dickins
94ab10dd42 mm: delete unsafe BUG from page_cache_add_speculative()
It is not easily reproducible, but on 5.16-rc I have several times hit
the VM_BUG_ON_PAGE(PageTail(page), page) in
page_cache_add_speculative(): usually from filemap_get_read_batch() for
an ext4 read, yesterday from next_uptodate_page() from
filemap_map_pages() for a shmem fault.

That BUG used to be placed where page_ref_add_unless() had succeeded,
but now it is placed before folio_ref_add_unless() is attempted: that is
not safe, since it is only the acquired reference which makes the page
safe from racing THP collapse or split.

We could keep the BUG, checking PageTail only when
folio_ref_try_add_rcu() has succeeded; but I don't think it adds much
value - just delete it.

Link: https://lkml.kernel.org/r/8b98fc6f-3439-8614-c3f3-945c659a1aba@google.com
Fixes: 020853b6f5 ("mm: Add folio_try_get_rcu()")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-25 12:20:55 -08:00
Xin Long
5ec7d18d18 sctp: use call_rcu to free endpoint
This patch is to delay the endpoint free by calling call_rcu() to fix
another use-after-free issue in sctp_sock_dump():

  BUG: KASAN: use-after-free in __lock_acquire+0x36d9/0x4c20
  Call Trace:
    __lock_acquire+0x36d9/0x4c20 kernel/locking/lockdep.c:3218
    lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
    __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
    _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168
    spin_lock_bh include/linux/spinlock.h:334 [inline]
    __lock_sock+0x203/0x350 net/core/sock.c:2253
    lock_sock_nested+0xfe/0x120 net/core/sock.c:2774
    lock_sock include/net/sock.h:1492 [inline]
    sctp_sock_dump+0x122/0xb20 net/sctp/diag.c:324
    sctp_for_each_transport+0x2b5/0x370 net/sctp/socket.c:5091
    sctp_diag_dump+0x3ac/0x660 net/sctp/diag.c:527
    __inet_diag_dump+0xa8/0x140 net/ipv4/inet_diag.c:1049
    inet_diag_dump+0x9b/0x110 net/ipv4/inet_diag.c:1065
    netlink_dump+0x606/0x1080 net/netlink/af_netlink.c:2244
    __netlink_dump_start+0x59a/0x7c0 net/netlink/af_netlink.c:2352
    netlink_dump_start include/linux/netlink.h:216 [inline]
    inet_diag_handler_cmd+0x2ce/0x3f0 net/ipv4/inet_diag.c:1170
    __sock_diag_cmd net/core/sock_diag.c:232 [inline]
    sock_diag_rcv_msg+0x31d/0x410 net/core/sock_diag.c:263
    netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477
    sock_diag_rcv+0x2a/0x40 net/core/sock_diag.c:274

This issue occurs when asoc is peeled off and the old sk is freed after
getting it by asoc->base.sk and before calling lock_sock(sk).

To prevent the sk free, as a holder of the sk, ep should be alive when
calling lock_sock(). This patch uses call_rcu() and moves sock_put and
ep free into sctp_endpoint_destroy_rcu(), so that it's safe to try to
hold the ep under rcu_read_lock in sctp_transport_traverse_process().

If sctp_endpoint_hold() returns true, it means this ep is still alive
and we have held it and can continue to dump it; If it returns false,
it means this ep is dead and can be freed after rcu_read_unlock, and
we should skip it.

In sctp_sock_dump(), after locking the sk, if this ep is different from
tsp->asoc->ep, it means during this dumping, this asoc was peeled off
before calling lock_sock(), and the sk should be skipped; If this ep is
the same with tsp->asoc->ep, it means no peeloff happens on this asoc,
and due to lock_sock, no peeloff will happen either until release_sock.

Note that delaying endpoint free won't delay the port release, as the
port release happens in sctp_endpoint_destroy() before calling call_rcu().
Also, freeing endpoint by call_rcu() makes it safe to access the sk by
asoc->base.sk in sctp_assocs_seq_show() and sctp_rcv().

Thanks Jones to bring this issue up.

v1->v2:
  - improve the changelog.
  - add kfree(ep) into sctp_endpoint_destroy_rcu(), as Jakub noticed.

Reported-by: syzbot+9276d76e83e3bcde6c99@syzkaller.appspotmail.com
Reported-by: Lee Jones <lee.jones@linaro.org>
Fixes: d25adbeb0c ("sctp: fix an use-after-free issue in sctp_sock_dump")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-25 17:13:37 +00:00
Jakub Kicinski
8b3f913322 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
include/net/sock.h
  commit 8f905c0e73 ("inet: fully convert sk->sk_rx_dst to RCU rules")
  commit 43f51df417 ("net: move early demux fields close to sk_refcnt")
  https://lore.kernel.org/all/20211222141641.0caa0ab3@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-23 16:09:58 -08:00
Linus Torvalds
76657eaef4 Merge tag 'net-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - regressions:

   - revert "tipc: use consistent GFP flags"

  Previous releases - regressions:

   - igb: fix deadlock caused by taking RTNL in runtime resume path

   - accept UFOv6 packages in virtio_net_hdr_to_skb

   - netfilter: fix regression in looped (broad|multi)cast's MAC
     handling

   - bridge: fix ioctl old_deviceless bridge argument

   - ice: xsk: do not clear status_error0 for ntu + nb_buffs descriptor,
     avoid stalls when multiple sockets use an interface

  Previous releases - always broken:

   - inet: fully convert sk->sk_rx_dst to RCU rules

   - veth: ensure skb entering GRO are not cloned

   - sched: fix zone matching for invalid conntrack state

   - bonding: fix ad_actor_system option setting to default

   - nf_tables: fix use-after-free in nft_set_catchall_destroy()

   - lantiq_xrx200: increase buffer reservation to avoid mem corruption

   - ice: xsk: avoid leaking app buffers during clean up

   - tun: avoid double free in tun_free_netdev"

* tag 'net-5.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
  net: stmmac: dwmac-visconti: Fix value of ETHER_CLK_SEL_FREQ_SEL_2P5M
  r8152: sync ocp base
  r8152: fix the force speed doesn't work for RTL8156
  net: bridge: fix ioctl old_deviceless bridge argument
  net: stmmac: ptp: fix potentially overflowing expression
  net: dsa: tag_ocelot: use traffic class to map priority on injected header
  veth: ensure skb entering GRO are not cloned.
  asix: fix wrong return value in asix_check_host_enable()
  asix: fix uninit-value in asix_mdio_read()
  sfc: falcon: Check null pointer of rx_queue->page_ring
  sfc: Check null pointer of rx_queue->page_ring
  net: ks8851: Check for error irq
  drivers: net: smc911x: Check for error irq
  fjes: Check for error irq
  bonding: fix ad_actor_system option setting to default
  igb: fix deadlock caused by taking RTNL in RPM resume path
  gve: Correct order of processing device options
  net: skip virtio_net_hdr_set_proto if protocol already set
  net: accept UFOv6 packages in virtio_net_hdr_to_skb
  docs: networking: replace skb_hwtstamp_tx with skb_tstamp_tx
  ...
2021-12-23 10:45:55 -08:00
Linus Torvalds
c8cc50a98e Merge tag 'arm-fixes-5.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
 "This is my last set of fixes for 5.16, including

   - multiple code fixes for the op-tee firmware driver

   - Two patches for allwinner SoCs, one fixing the phy mode on a board,
     the other one fixing a driver bug in the "RSB" bus driver. This was
     originally targeted for 5.17, but seemed worth moving to 5.16

   - Two small fixes for devicetree files on i.MX platforms, resolving
     problems with ethernet and i2c"

* tag 'arm-fixes-5.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  optee: Suppress false positive kmemleak report in optee_handle_rpc()
  tee: optee: Fix incorrect page free bug
  arm64: dts: lx2160a: fix scl-gpios property name
  tee: handle lookup of shm with reference count 0
  ARM: dts: imx6qdl-wandboard: Fix Ethernet support
  bus: sunxi-rsb: Fix shutdown
  arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode
2021-12-23 09:22:34 -08:00
Andy Shevchenko
30be4551f9 wwan: Replace kernel.h with the necessary inclusions
When kernel.h is used in the headers it adds a lot into dependency hell,
especially when there are circular dependencies are involved.

Replace kernel.h inclusion with the list of what is really being used.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-23 11:21:53 +00:00
Xin Long
3d3b2f57d4 sctp: move hlist_node and hashent out of sctp_ep_common
Struct sctp_ep_common is included in both asoc and ep, but hlist_node
and hashent are only needed by ep after asoc_hashtable was dropped by
Commit b5eff71283 ("sctp: drop the old assoc hashtable of sctp").

So it is better to move hlist_node and hashent from sctp_ep_common to
sctp_endpoint, and it saves some space for each asoc.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-12-23 11:15:30 +00:00
Jakub Kicinski
5de24da1b3 Merge tag 'mlx5-updates-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:

====================
mlx5-updates-2021-12-21

1) From Shay Drory: Devlink user knobs to control device's EQ size

This series provides knobs which will enable users to
minimize memory consumption of mlx5 Functions (PF/VF/SF).
mlx5 exposes two new generic devlink params for EQ size
configuration and uses devlink generic param max_macs.

LINK: https://lore.kernel.org/netdev/20211208141722.13646-1-shayd@nvidia.com/

2) From Tariq and Lama, allocate software channel objects and statistics
  of a mlx5 netdevice private data dynamically upon first demand to save on
  memory.

* tag 'mlx5-updates-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5e: Take packet_merge params directly from the RX res struct
  net/mlx5e: Allocate per-channel stats dynamically at first usage
  net/mlx5e: Use dynamic per-channel allocations in stats
  net/mlx5e: Allow profile-specific limitation on max num of channels
  net/mlx5e: Save memory by using dynamic allocation in netdev priv
  net/mlx5e: Add profile indications for PTP and QOS HTB features
  net/mlx5e: Use bitmap field for profile features
  net/mlx5: Remove the repeated declaration
  net/mlx5: Let user configure max_macs generic param
  devlink: Clarifies max_macs generic devlink param
  net/mlx5: Let user configure event_eq_size param
  devlink: Add new "event_eq_size" generic device param
  net/mlx5: Let user configure io_eq_size param
  devlink: Add new "io_eq_size" generic device param
====================

Link: https://lore.kernel.org/r/20211222031604.14540-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-22 17:13:01 -08:00
Jakub Kicinski
e6e5904455 codel: remove unnecessary pkt_sched.h include
Commit d068ca2ae2 ("codel: split into multiple files") moved all
Qdisc-related code to codel_qdisc.h, move the include of pkt_sched.h
as well.

This is similar to the previous commit, although we don't care as
much about incremental builds after pkt_sched.h was touched itself
it is included by net/sch_generic.h which is modified ~20 times
a year.

This decreases the incremental build size after touching pkt_sched.h
from 1592 to 617 objects.

Fix unmasked missing includes in WiFi drivers.

Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211221193941.3805147-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-22 15:03:51 -08:00
Jakub Kicinski
15fcb10311 codel: remove unnecessary sock.h include
Since sock.h is modified relatively often (60 times in the last
12 months) it seems worthwhile to decrease the incremental build
work.

CoDel's header includes net/inet_ecn.h which in turn includes net/sock.h.
codel.h is itself included by mac80211 which is included by much of
the WiFi stack and drivers. Removing the net/inet_ecn.h include from
CoDel breaks the dependecy between WiFi and sock.h.

Commit d068ca2ae2 ("codel: split into multiple files") moved all
the code which actually needs ECN helpers out to net/codel_impl.h,
the include can be moved there as well.

This decreases the incremental build size after touching sock.h
from 4999 objects to 4051 objects.

Fix unmasked missing includes in WiFi drivers.

Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211221193941.3805147-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-22 15:03:47 -08:00
Luiz Augusto von Dentz
76d0685bba Bluetooth: MGMT: Fix LE simultaneous roles UUID if not supported
If controller/driver don't support LE simultaneous roles its UUID shall
be omitted when responding to MGMT_OP_READ_EXP_FEATURES_INFO.

This also rework the support introducing HCI_LE_SIMULTANEOUS_ROLES flag
so it can be detected when userspace wants to use or not.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-12-22 23:01:35 +01:00
Luiz Augusto von Dentz
4fc9857ab8 Bluetooth: hci_sync: Add check simultaneous roles support
This attempts to check if the controller can act as both central and
peripheral simultaneously and in case it does skip suspending
advertising or in case of directed advertising don't fail if scanning.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-12-22 23:01:35 +01:00
Luiz Augusto von Dentz
85b56857e1 Bluetooth: hci_sync: Add support for waiting specific LE subevents
This adds support for waiting for specific LE subevents instead of
command status which may only indicate that the commands is in progress
and a different event is used to complete the operation.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-12-22 23:01:35 +01:00
Luiz Augusto von Dentz
8e8b92ee60 Bluetooth: hci_sync: Add hci_le_create_conn_sync
This adds hci_le_create_conn_sync and make hci_le_connect use it instead
of queueing multiple commands which may conflict with the likes of
hci_update_passive_scan which uses hci_cmd_sync_queue.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-12-22 23:01:35 +01:00
Benjamin Berg
744451c162 Bluetooth: hci_sync: Push sync command cancellation to workqueue
syzbot reported that hci_cmd_sync_cancel may sleep from the wrong
context. To avoid this, create a new work item that pushes the relevant
parts into a different context.

Note that we keep the old implementation with the name
__hci_cmd_sync_cancel as the sleeping behaviour is desired in some
cases.

Reported-and-tested-by: syzbot+485cc00ea7cf41dfdbf1@syzkaller.appspotmail.com
Fixes: c97a747efc ("Bluetooth: btusb: Cancel sync commands for certain URB errors")
Signed-off-by: Benjamin Berg <bberg@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2021-12-22 23:01:27 +01:00
Linus Torvalds
bc491fb125 Merge tag 'fixes-2021-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fix from Mike Rapoport:
 "Fix memblock_phys_alloc() section mismatch error

  There are section mismatch errors when compiler refuses to inline
  one-line wrapper memblock_phys_alloc(). Make memblock_phys_alloc()
  __always_inline to avoid these mismatch issues"

* tag 'fixes-2021-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock: fix memblock_phys_alloc() section mismatch error
2021-12-22 11:39:53 -08:00
Jackie Liu
d7f55471db memblock: fix memblock_phys_alloc() section mismatch error
Fix modpost Section mismatch error in memblock_phys_alloc()

[...]
WARNING: modpost: vmlinux.o(.text.unlikely+0x1dcc): Section mismatch in reference
from the function memblock_phys_alloc() to the function .init.text:memblock_phys_alloc_range()
The function memblock_phys_alloc() references
the function __init memblock_phys_alloc_range().
This is often because memblock_phys_alloc lacks a __init
annotation or the annotation of memblock_phys_alloc_range is wrong.

ERROR: modpost: Section mismatches detected.
Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.
[...]

memblock_phys_alloc() is a one-line wrapper, make it __always_inline to
avoid these section mismatches.

Reported-by: k2ci <kernel-bot@kylinos.cn>
Suggested-by: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
[rppt: slightly massaged changelog ]
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/20211217020754.2874872-1-liu.yun@linux.dev
2021-12-22 19:35:29 +02:00