linux-2.6-microblaze.git
7 years agonet: hns3: remove a couple of redundant assignments
Colin Ian King [Wed, 1 Nov 2017 10:17:15 +0000 (10:17 +0000)]
net: hns3: remove a couple of redundant assignments

The assignment to kinfo is redundant as this is a duplicate of
the initialiation of kinfo a few lines earlier, so it can be
removed.  The assignment to v_tc_info is never read, so this
variable is redundant and can be removed completely. Cleans
up two clang warnings:

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c:433:34:
warning: Value stored to 'kinfo' during its initialization is never read
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c:775:3:
warning: Value stored to 'v_tc_info' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoliquidio: remove redundant setting of inst_processed to zero
Colin Ian King [Wed, 1 Nov 2017 09:09:13 +0000 (09:09 +0000)]
liquidio: remove redundant setting of inst_processed to zero

The zero value assigned to inst_processed at the end of each
iteration of the do-while loop is overwritten on the next iteration
and hence it is a redundant assignment and can be removed. Cleans
up clang warning:

drivers/net/ethernet/cavium/liquidio/request_manager.c:480:3:
warning: Value stored to 'inst_processed' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dl2k: remove redundant re-assignment to np
Colin Ian King [Wed, 1 Nov 2017 08:57:37 +0000 (08:57 +0000)]
net: dl2k: remove redundant re-assignment to np

The pointer np is initialized and then re-assigned the same value
a few lines later. Remove the redundant duplicated assignment. Cleans
up clang warning:

drivers/net/ethernet/dlink/dl2k.c:314:25: warning: Value stored to
'np' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agowan: wanxl: remove redundant assignment to stat
Colin Ian King [Wed, 1 Nov 2017 08:49:45 +0000 (08:49 +0000)]
wan: wanxl: remove redundant assignment to stat

stat set to zero and the value is never read, instead stat is
set again in the do-loop. Hence the setting to zero is redundant
and can be removed. Cleans up clang warning:

drivers/net/wan/wanxl.c:737:2: warning: Value stored to 'stat'
is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Thu, 2 Nov 2017 05:59:52 +0000 (14:59 +0900)]
Merge git://git./linux/kernel/git/davem/net

Smooth Cong Wang's bug fix into 'net-next'.  Basically put
the bulk of the tcf_block_put() logic from 'net' into
tcf_block_put_ext(), but after the offload unbind.

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'samples-pktgen-updates'
David S. Miller [Thu, 2 Nov 2017 05:19:53 +0000 (14:19 +0900)]
Merge branch 'samples-pktgen-updates'

Jesper Dangaard Brouer says:

====================
Updates for samples/pktgen

This patchset updates samples/pktgen and synchronize with changes
maintained in https://github.com/netoptimizer/network-testing/

Features wise Robert Hoo <robert.hu@intel.com> added support for
detecting and determining dev NUMA node IRQs, and added a new script
named pktgen_sample06_numa_awared_queue_irq_affinity.sh that use these
features.

Cleanup remove last of the old sample files, as IPv6 is covered by
existing sample code.
====================

Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosamples/pktgen: remove remaining old pktgen sample scripts
Jesper Dangaard Brouer [Wed, 1 Nov 2017 10:41:24 +0000 (11:41 +0100)]
samples/pktgen: remove remaining old pktgen sample scripts

Since commit 0f06a6787e05 ("samples: Add an IPv6 '-6' option to the
pktgen scripts") the newer pktgen_sampleXX script does show howto use
IPv6 with pktgen.

Thus, there is no longer a reason to keep the older sample scripts around.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosamples/pktgen: update sample03, no need for clones when bursting
Jesper Dangaard Brouer [Wed, 1 Nov 2017 10:41:19 +0000 (11:41 +0100)]
samples/pktgen: update sample03, no need for clones when bursting

Like sample05, don't use pktgen clone_skb feature when using 'burst' feature,
it is not really needed.  This brings the burst users in sync.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosamples/pktgen: add script pktgen_sample06_numa_awared_queue_irq_affinity.sh
Robert Hoo [Wed, 1 Nov 2017 10:41:14 +0000 (11:41 +0100)]
samples/pktgen: add script pktgen_sample06_numa_awared_queue_irq_affinity.sh

This script simply does:

* Detect $DEV's NUMA node belonging.

* Bind each thread (processor of NUMA locality) with each $DEV queue's
  irq affinity, 1:1 mapping.

* How many '-t' threads input determines how many queues will be utilized.

If '-f' designates first cpu id, then offset in the NUMA node's cpu list.

(Changes by Jesper: allow changing count from cmdline via '-n')

Signed-off-by: Robert Hoo <robert.hu@intel.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosamples/pktgen: Add some helper functions
Robert Hoo [Wed, 1 Nov 2017 10:41:09 +0000 (11:41 +0100)]
samples/pktgen: Add some helper functions

1. given a device, get its NUMA belongings
2. given a device, get its queues' irq numbers.
3. given a NUMA node, get its cpu id list.

Signed-off-by: Robert Hoo <robert.hu@intel.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'enic-Additional-ethtool-support'
David S. Miller [Thu, 2 Nov 2017 05:17:12 +0000 (14:17 +0900)]
Merge branch 'enic-Additional-ethtool-support'

Parvi Kaustubhi says:

====================
enic: Additional ethtool support

This patch set allows the user to show or modify rx/tx ring sizes using
ethtool.

v2:
- remove unused variable to fix build warning.
- update list of maintainers for cisco vic ethernet nic driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: update MAINTAINERS for cisco vic
Parvi Kaustubhi [Wed, 1 Nov 2017 15:44:48 +0000 (08:44 -0700)]
MAINTAINERS: update MAINTAINERS for cisco vic

Add myself to list of maintainers for cisco vic ethernet nic driver. Remove
Neel as he left.

Signed-off-by: Parvi Kaustubhi <pkaustub@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoenic: Add support for 'ethtool -g/-G'
Parvi Kaustubhi [Wed, 1 Nov 2017 15:44:47 +0000 (08:44 -0700)]
enic: Add support for 'ethtool -g/-G'

Add support for displaying and modifying rx and tx ring sizes using
ethtool.

Also, increasing version to  2.3.0.45

Signed-off-by: Parvi Kaustubhi <pkaustub@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoenic: reset fetch index
Parvi Kaustubhi [Wed, 1 Nov 2017 15:44:46 +0000 (08:44 -0700)]
enic: reset fetch index

Since we are allowing rx ring size modification, reset fetch index
everytime. Otherwise it could have a stale value that can lead to a null
pointer dereference.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: Parvi Kaustubhi <pkaustub@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
Linus Torvalds [Wed, 1 Nov 2017 23:04:27 +0000 (16:04 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ebiederm/user-namespace

Pull signal bugfix from Eric Biederman:
 "When making the generic support for SIGEMT conditional on the presence
  of SIGEMT I made a typo that causes it to fail to activate. It was
  noticed comparatively quickly but the bug report just made it to me
  today"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  signal: Fix name of SIGEMT in #if defined() check

7 years agosignal: Fix name of SIGEMT in #if defined() check
Andrew Clayton [Wed, 1 Nov 2017 15:49:59 +0000 (15:49 +0000)]
signal: Fix name of SIGEMT in #if defined() check

Commit cc731525f26a ("signal: Remove kernel interal si_code magic")
added a check for SIGMET and NSIGEMT being defined. That SIGMET should
in fact be SIGEMT, with SIGEMT being defined in
arch/{alpha,mips,sparc}/include/uapi/asm/signal.h

This was actually pointed out by BenHutchings in a lwn.net comment
here https://lwn.net/Comments/734608/

Fixes: cc731525f26a ("signal: Remove kernel interal si_code magic")
Signed-off-by: Andrew Clayton <andrew@digital-domain.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
7 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Wed, 1 Nov 2017 21:46:38 +0000 (14:46 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few fixes that should go into this series:

   - Regression fix for ide-cd, ensuring that a request is fully
     initialized. From Hongxu.

   - Ditto fix for virtio_blk, from Bart.

   - NVMe fix from Keith, ensuring that we set the right block size on
     revalidation. If the block size changed, we'd be in trouble without
     it.

   - NVMe rdma fix from Sagi, fixing a potential hang while the
     controller is being removed"

* 'for-linus' of git://git.kernel.dk/linux-block:
  ide:ide-cd: fix kernel panic resulting from missing scsi_req_init
  nvme: Fix setting logical block format when revalidating
  virtio_blk: Fix an SG_IO regression
  nvme-rdma: fix possible hang when issuing commands during ctrl removal

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 1 Nov 2017 15:29:01 +0000 (08:29 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix refcounting in xfrm_bundle_lookup() when using a dummy bundle,
    from Steffen Klassert.

 2) Fix crypto header handling in rx data frames in ath10k driver, from
    Vasanthakumar Thiagarajan.

 3) Fix use after free of qdisc when we defer tcp_chain_flush() to a
    workqueue. From Cong Wang.

 4) Fix double free in lapbether driver, from Pan Bian.

 5) Sanitize TUNSETSNDBUF values, from Craig Gallek.

 6) Fix refcounting when addrconf_permanent_addr() calls
    ipv6_del_addr(). From Eric Dumazet.

 7) Fix MTU probing bug in TCP that goes back to 2007, from Eric
    Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  tcp: fix tcp_mtu_probe() vs highest_sack
  ipv6: addrconf: increment ifp refcount before ipv6_del_addr()
  tun/tap: sanitize TUNSETSNDBUF input
  mlxsw: i2c: Fix buffer increment counter for write transaction
  mlxsw: reg: Add high and low temperature thresholds
  MAINTAINERS: Remove Yotam from mlxfw
  MAINTAINERS: Update Yotam's E-mail
  net: hns: set correct return value
  net: lapbether: fix double free
  bpf: remove SK_REDIRECT from UAPI
  net: phy: marvell: Only configure RGMII delays when using RGMII
  xfrm: Fix GSO for IPsec with GRE tunnel.
  tc-testing: fix arg to ip command: -s -> -n
  net_sched: remove tcf_block_put_deferred()
  l2tp: hold tunnel in pppol2tp_connect()
  Revert "ath10k: fix napi_poll budget overflow"
  ath10k: rebuild crypto header in rx data frames
  wcn36xx: Remove unnecessary rcu_read_unlock in wcn36xx_bss_info_changed
  xfrm: Clear sk_dst_cache when applying per-socket policy.
  xfrm: Fix xfrm_dst_cache memleak

7 years agox86/mm: fix use-after-free of vma during userfaultfd fault
Vlastimil Babka [Wed, 1 Nov 2017 07:21:25 +0000 (08:21 +0100)]
x86/mm: fix use-after-free of vma during userfaultfd fault

Syzkaller with KASAN has reported a use-after-free of vma->vm_flags in
__do_page_fault() with the following reproducer:

  mmap(&(0x7f0000000000/0xfff000)=nil, 0xfff000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
  mmap(&(0x7f0000011000/0x3000)=nil, 0x3000, 0x1, 0x32, 0xffffffffffffffff, 0x0)
  r0 = userfaultfd(0x0)
  ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000002000-0x18)={0xaa, 0x0, 0x0})
  ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000019000)={{&(0x7f0000012000/0x2000)=nil, 0x2000}, 0x1, 0x0})
  r1 = gettid()
  syz_open_dev$evdev(&(0x7f0000013000-0x12)="2f6465762f696e7075742f6576656e742300", 0x0, 0x0)
  tkill(r1, 0x7)

The vma should be pinned by mmap_sem, but handle_userfault() might (in a
return to userspace scenario) release it and then acquire again, so when
we return to __do_page_fault() (with other result than VM_FAULT_RETRY),
the vma might be gone.

Specifically, per Andrea the scenario is
 "A return to userland to repeat the page fault later with a
  VM_FAULT_NOPAGE retval (potentially after handling any pending signal
  during the return to userland). The return to userland is identified
  whenever FAULT_FLAG_USER|FAULT_FLAG_KILLABLE are both set in
  vmf->flags"

However, since commit a3c4fb7c9c2e ("x86/mm: Fix fault error path using
unsafe vma pointer") there is a vma_pkey() read of vma->vm_flags after
that point, which can thus become use-after-free.  Fix this by moving
the read before calling handle_mm_fault().

Reported-by: syzbot <bot+6a5269ce759a7bb12754ed9622076dc93f65a1f6@syzkaller.appspotmail.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Fixes: 3c4fb7c9c2e ("x86/mm: Fix fault error path using unsafe vma pointer")
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge tag 'smb3-file-name-too-long-fix' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Wed, 1 Nov 2017 14:59:39 +0000 (07:59 -0700)]
Merge tag 'smb3-file-name-too-long-fix' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fix from Steve French:
 "smb3 file name too long fix"

* tag 'smb3-file-name-too-long-fix' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: check MaxPathNameComponentLength != 0 before using it

7 years agoide:ide-cd: fix kernel panic resulting from missing scsi_req_init
Hongxu Jia [Tue, 31 Oct 2017 07:39:40 +0000 (15:39 +0800)]
ide:ide-cd: fix kernel panic resulting from missing scsi_req_init

Since we split the scsi_request out of struct request, while the
standard prep_rq_fn builds 10 byte cmds, it missed to invoke
scsi_req_init() to initialize certain fields of a scsi_request
structure (.__cmd[], .cmd, .cmd_len and .sense_len but no other
members of struct scsi_request).

An example panic on virtual machines (qemu/virtualbox) to boot
from IDE cdrom:
...
[    8.754381] Call Trace:
[    8.755419]  blk_peek_request+0x182/0x2e0
[    8.755863]  blk_fetch_request+0x1c/0x40
[    8.756148]  ? ktime_get+0x40/0xa0
[    8.756385]  do_ide_request+0x37d/0x660
[    8.756704]  ? cfq_group_service_tree_add+0x98/0xc0
[    8.757011]  ? cfq_service_tree_add+0x1e5/0x2c0
[    8.757313]  ? ktime_get+0x40/0xa0
[    8.757544]  __blk_run_queue+0x3d/0x60
[    8.757837]  queue_unplugged+0x2f/0xc0
[    8.758088]  blk_flush_plug_list+0x1f4/0x240
[    8.758362]  blk_finish_plug+0x2c/0x40
...
[    8.770906] RIP: ide_cdrom_prep_fn+0x63/0x180 RSP: ffff92aec018bae8
[    8.772329] ---[ end trace 6408481e551a85c9 ]---
...

Fixes: 82ed4db499b8 ("block: split scsi_request out of struct request")

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
7 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
David S. Miller [Wed, 1 Nov 2017 13:08:48 +0000 (22:08 +0900)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2017-11-01

Here's one more bluetooth-next pull request for the 4.15 kernel.

 - New NFA344A device entry for btusb drvier
 - Fix race conditions in hci_ldisc
 - Fix for isochronous interface assignments in btusb driver
 - A few other smaller fixes & improvements

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: fix verifier memory leaks
Alexei Starovoitov [Wed, 1 Nov 2017 07:08:04 +0000 (00:08 -0700)]
bpf: fix verifier memory leaks

fix verifier memory leaks

Fixes: 638f5b90d460 ("bpf: reduce verifier memory consumption")
Signed-off-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'cxgb4-add-hash-filter-support-to-tc-flower-offload'
David S. Miller [Wed, 1 Nov 2017 13:06:04 +0000 (22:06 +0900)]
Merge branch 'cxgb4-add-hash-filter-support-to-tc-flower-offload'

Rahul Lakkireddy says:

====================
cxgb4: add hash-filter support to tc-flower offload

This series of patches add support to create hash-filters; a.k.a
exact-match filters, to tc-flower offload.  T6 supports creating
~500K hash-filters in hw and can theoretically be expanded up to
~1 million.

Patch 1 fetches and saves the configured hw filter tuple field shifts
and filter mask.

Patch 2 initializes the driver to use hash-filter configuration.

Patch 3 adds support to create hash filters in hw.

Patch 4 adds support to delete hash filters in hw.

Patch 5 adds support to retrieve filter stats for hash filters.

Patch 6 converts the flower table to use rhashtable instead of
static hlist.

Patch 7 finally adds support to create hash filters via tc-flower
offload.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: add support to create hash-filters via tc-flower offload
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:05 +0000 (08:53 +0530)]
cxgb4: add support to create hash-filters via tc-flower offload

Determine whether the flow classifies as exact-match with respect to
4-tuple and configured tuple mask in hw. If successfully classified
as exact-match, offload the flow as hash-filter in hw.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: convert flower table to use rhashtable
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:04 +0000 (08:53 +0530)]
cxgb4: convert flower table to use rhashtable

T6 supports ~500K hash filters and can theoretically climb up to
~1 million hash filters. Preallocated hash table is not efficient
in terms of memory usage. So, use rhashtable instead which gives
the flexibility to grow based on usage.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: add support to retrieve stats for hash filters
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:03 +0000 (08:53 +0530)]
cxgb4: add support to retrieve stats for hash filters

Add support to retrieve packet-count and byte-count for hash-filters
by retrieving filter-entry appropriately based on whether the
request is for hash-filter or not.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: add support to delete hash filter
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:02 +0000 (08:53 +0530)]
cxgb4: add support to delete hash filter

Use a combined ulptx work-request to send hash filter deletion
request to hw. Hash filter deletion reply is processed on
getting cpl_abort_rpl_rss.

Release any L2T/SMT/CLIP entries on filter deletion.
Also, free up the corresponding filter entry.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: add support to create hash filters
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:01 +0000 (08:53 +0530)]
cxgb4: add support to create hash filters

Add support to create hash (exact-match) filters based on the value
of 'hash' field in ch_filter_specification.

Allocate SMT/L2T entries if DMAC-rewrite/SMAC-rewrite is requested.

Allocate CLIP entry in case of IPv6 filter.

Use cpl_act_open_req[6] to send hash filter create request to hw.
Also, the filter tuple is calculated as part of sending this request.

Hash-filter reply is processed on getting cpl_act_open_rpl.
In case of success, various bits/fields in filter-tcb are set per
filter requirement, such as enabling filter hitcnts, and/or various
header rewrite operations, such as VLAN-rewrite, NAT or
(L3/L4)-rewrite, and SMAC/DMAC-rewrite. In case of failure, clear the
filter entry and release any hw resources occupied by it.

The patch also moves the functions set_tcb_field, set_tcb_tflag and
configure_filter_smac towards beginning of file.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: initialize hash-filter configuration
Kumar Sanghvi [Wed, 1 Nov 2017 03:23:00 +0000 (08:53 +0530)]
cxgb4: initialize hash-filter configuration

Add support for hash-filter configuration on T6. Also, do basic
checks for the related initialization.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: save additional filter tuple field shifts in tp_params
Kumar Sanghvi [Wed, 1 Nov 2017 03:22:59 +0000 (08:52 +0530)]
cxgb4: save additional filter tuple field shifts in tp_params

Save additional filter tuple field shifts in tp_params based on
configured filter tuple fields.

Also, save the combined filter tuple mask based on configured
filter tuple fields.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'lan9303-Fix-STP-and-flooding-issues'
David S. Miller [Wed, 1 Nov 2017 12:30:24 +0000 (21:30 +0900)]
Merge branch 'lan9303-Fix-STP-and-flooding-issues'

Egil Hjelmeland says:

====================
net: dsa: lan9303: Fix STP and flooding issues

This patch set finishes the STP support, and fixes flooding issues.

Patch 1 fixes a flooding issue in the previous patch set.
Patch 2 finishes STP support by adding a ALR entry.
Patch 3 prevent duplicate flooding in HW and SW bridge.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: lan9303: lan9303_rcv set skb->offload_fwd_mark
Egil Hjelmeland [Tue, 31 Oct 2017 14:48:02 +0000 (15:48 +0100)]
net: dsa: lan9303: lan9303_rcv set skb->offload_fwd_mark

The chip flood broadcast and unknown multicast frames.
On receive set skb->offload_fwd_mark to prevent the SW from flooding to the
same ports.

One exception: Because the ALR is set up to forward STP BPDUs only to CPU,
the SW bridge should flood STP BPDUs if local STP is not enabled.
This is archived by not setting skb->offload_fwd_mark on STP BPDUs.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: lan9303: Add STP ALR entry on port 0
Egil Hjelmeland [Tue, 31 Oct 2017 14:48:01 +0000 (15:48 +0100)]
net: dsa: lan9303: Add STP ALR entry on port 0

STP BPDUs arriving on user ports must sent to CPU port only,
for processing by the SW bridge.

Add an ALR entry with STP state override to fix that.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: lan9303: Transmit using ALR when unicast
Egil Hjelmeland [Tue, 31 Oct 2017 14:48:00 +0000 (15:48 +0100)]
net: dsa: lan9303: Transmit using ALR when unicast

lan9303_xmit_use_arl() introduced in previous patch set is wrong.
The chip flood broadcast and unknown multicast frames. The effect is that
broadcasts and multicasts are duplicated on egress. It is not possible to
configure the chip to direct unknown multicasts to CPU port only.

This means that only unicast frames can be transmitted using ALR lookup.

Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: thunderx: remove a couple of redundant assignments
Colin Ian King [Tue, 31 Oct 2017 14:37:55 +0000 (14:37 +0000)]
net: thunderx: remove a couple of redundant assignments

The assignment to pointer msg is redundant as it is never read, so
remove msg.  Also remove the first assignment to qset as this is not
read before the next re-assignment of a new value to qset in the
for-loop. Cleans up two clang warnings:

drivers/net/ethernet/cavium/thunder/nic_main.c:589:2: warning: Value
stored to 'msg' is never read
drivers/net/ethernet/cavium/thunder/nic_main.c:611:2: warning: Value
stored to 'qset' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Add lib/net_utils.c to NETWORKING (general)
Andy Shevchenko [Tue, 31 Oct 2017 14:37:18 +0000 (16:37 +0200)]
MAINTAINERS: Add lib/net_utils.c to NETWORKING (general)

It looks like the best place in MAINTAINERS data base to cover this
orphaned module.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosfc: support rx-fcs and rx-all
Edward Cree [Tue, 31 Oct 2017 14:29:47 +0000 (14:29 +0000)]
sfc: support rx-fcs and rx-all

Ethernet FCS inclusion (rx-fcs) is supported on EF10 NICs, conditional on
 a firmware capability bit (MC_CMD_GET_CAPABILITIES_OUT_RX_INCLUDE_FCS).
To receive frames with bad FCS (rx-all) we just don't return the discard
 flag EFX_RX_PKT_DISCARD from efx_ef10_handle_rx_event_errors() or
 efx_farch_handle_rx_not_ok().

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: macb: remove redundant assignment to variable work_done
Colin Ian King [Tue, 31 Oct 2017 14:23:24 +0000 (14:23 +0000)]
net: macb: remove redundant assignment to variable work_done

Variable work_done is set to zero and this value is never read, instead
it is set to another value a few statements later.  Remove the redundant
assignment. Cleans up clang warning:

drivers/net/ethernet/cadence/macb_main.c:1221:2: warning: Value stored
to 'work_done' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoipv4: fix validate_source for VRF setup
Paolo Abeni [Tue, 31 Oct 2017 13:32:38 +0000 (14:32 +0100)]
ipv4: fix validate_source for VRF setup

David reported breakages of VRF scenarios due to the
commit 6e617de84e87 ("net: avoid a full fib lookup when rp_filter is
disabled."): the local addresses based test is too strict when VRFs
are in place.

With this change we fall-back to a full lookup when custom fib rules
are in place; so that we address the VRF use case and possibly other
similar issues in non trivial setups.

v1 -> v2:
 - fix build breakage when CONFIG_IP_MULTIPLE_TABLES is not defined,
   reported by the kbuild test robot

Reported-by: David Ahern <dsahern@gmail.com>
Fixes: 6e617de84e87 ("net: avoid a full fib lookup when rp_filter is disabled.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: fix error return code in sctp_send_add_streams()
Wei Yongjun [Tue, 31 Oct 2017 13:28:16 +0000 (13:28 +0000)]
sctp: fix error return code in sctp_send_add_streams()

Fix to returnerror code -ENOMEM from the sctp_make_strreset_addstrm()
error handling case instead of 0. 'retval' can be overwritten to 0 after
call sctp_stream_alloc_out().

Fixes: e090abd0d81c ("sctp: factor out stream->out allocation")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: hso: remove redundant unused variable dev
Colin Ian King [Tue, 31 Oct 2017 12:01:47 +0000 (12:01 +0000)]
net: hso: remove redundant unused variable dev

The pointer dev is being assigned but is never used, hence it is
redundant and can be removed. Cleans up clang warning:

drivers/net/usb/hso.c:2280:2: warning: Value stored to 'dev' is
never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoppp: Destroy the mutex when cleanup
Gao Feng [Tue, 31 Oct 2017 10:25:37 +0000 (18:25 +0800)]
ppp: Destroy the mutex when cleanup

The mutex_destroy only makes sense when enable DEBUG_MUTEX. For the
good readbility, it's better to invoke it in exit func when the init
func invokes mutex_init.

Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: slicoss: remove redundant initialization of idx
Colin Ian King [Tue, 31 Oct 2017 10:08:23 +0000 (10:08 +0000)]
net: ethernet: slicoss: remove redundant initialization of idx

Variable idx is being initialized and later on over-written by
a new value in a do-loop without the initial value ever being
read. Hence the initializion is redundant and can be removed.
Cleans up clang warning:

drivers/net/ethernet/alacritech/slicoss.c:358:15: warning: Value
stored to 'idx' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: fix tcp_mtu_probe() vs highest_sack
Eric Dumazet [Tue, 31 Oct 2017 06:08:20 +0000 (23:08 -0700)]
tcp: fix tcp_mtu_probe() vs highest_sack

Based on SNMP values provided by Roman, Yuchung made the observation
that some crashes in tcp_sacktag_walk() might be caused by MTU probing.

Looking at tcp_mtu_probe(), I found that when a new skb was placed
in front of the write queue, we were not updating tcp highest sack.

If one skb is freed because all its content was copied to the new skb
(for MTU probing), then tp->highest_sack could point to a now freed skb.

Bad things would then happen, including infinite loops.

This patch renames tcp_highest_sack_combine() and uses it
from tcp_mtu_probe() to fix the bug.

Note that I also removed one test against tp->sacked_out,
since we want to replace tp->highest_sack regardless of whatever
condition, since keeping a stale pointer to freed skb is a recipe
for disaster.

Fixes: a47e5a988a57 ("[TCP]: Convert highest_sack to sk_buff to allow direct access")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Reported-by: Roman Gushchin <guro@fb.com>
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoipv6: addrconf: increment ifp refcount before ipv6_del_addr()
Eric Dumazet [Tue, 31 Oct 2017 05:47:09 +0000 (22:47 -0700)]
ipv6: addrconf: increment ifp refcount before ipv6_del_addr()

In the (unlikely) event fixup_permanent_addr() returns a failure,
addrconf_permanent_addr() calls ipv6_del_addr() without the
mandatory call to in6_ifa_hold(), leading to a refcount error,
spotted by syzkaller :

WARNING: CPU: 1 PID: 3142 at lib/refcount.c:227 refcount_dec+0x4c/0x50
lib/refcount.c:227
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3142 Comm: ip Not tainted 4.14.0-rc4-next-20171009+ #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x41c kernel/panic.c:181
 __warn+0x1c4/0x1e0 kernel/panic.c:544
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:178
 do_trap_no_signal arch/x86/kernel/traps.c:212 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:261
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:298
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:311
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:refcount_dec+0x4c/0x50 lib/refcount.c:227
RSP: 0018:ffff8801ca49e680 EFLAGS: 00010286
RAX: 000000000000002c RBX: ffff8801d07cfcdc RCX: 0000000000000000
RDX: 000000000000002c RSI: 1ffff10039493c90 RDI: ffffed0039493cc4
RBP: ffff8801ca49e688 R08: ffff8801ca49dd70 R09: 0000000000000000
R10: ffff8801ca49df58 R11: 0000000000000000 R12: 1ffff10039493cd9
R13: ffff8801ca49e6e8 R14: ffff8801ca49e7e8 R15: ffff8801d07cfcdc
 __in6_ifa_put include/net/addrconf.h:369 [inline]
 ipv6_del_addr+0x42b/0xb60 net/ipv6/addrconf.c:1208
 addrconf_permanent_addr net/ipv6/addrconf.c:3327 [inline]
 addrconf_notify+0x1c66/0x2190 net/ipv6/addrconf.c:3393
 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x32/0x60 net/core/dev.c:1697
 call_netdevice_notifiers net/core/dev.c:1715 [inline]
 __dev_notify_flags+0x15d/0x430 net/core/dev.c:6843
 dev_change_flags+0xf5/0x140 net/core/dev.c:6879
 do_setlink+0xa1b/0x38e0 net/core/rtnetlink.c:2113
 rtnl_newlink+0xf0d/0x1a40 net/core/rtnetlink.c:2661
 rtnetlink_rcv_msg+0x733/0x1090 net/core/rtnetlink.c:4301
 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2408
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4313
 netlink_unicast_kernel net/netlink/af_netlink.c:1273 [inline]
 netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1299
 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1862
 sock_sendmsg_nosec net/socket.c:633 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:643
 ___sys_sendmsg+0x75b/0x8a0 net/socket.c:2049
 __sys_sendmsg+0xe5/0x210 net/socket.c:2083
 SYSC_sendmsg net/socket.c:2094 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2090
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x7fa9174d3320
RSP: 002b:00007ffe302ae9e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffe302b2ae0 RCX: 00007fa9174d3320
RDX: 0000000000000000 RSI: 00007ffe302aea20 RDI: 0000000000000016
RBP: 0000000000000082 R08: 0000000000000000 R09: 000000000000000f
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe302b32a0
R13: 0000000000000000 R14: 00007ffe302b2ab8 R15: 00007ffe302b32b8

Fixes: f1705ec197e7 ("net: ipv6: Make address flushing on ifdown optional")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Ahern <dsahern@gmail.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'PHYLINK-cosmetic-and-build-fixes'
David S. Miller [Wed, 1 Nov 2017 12:15:09 +0000 (21:15 +0900)]
Merge branch 'PHYLINK-cosmetic-and-build-fixes'

Florian Fainelli says:

====================
PHYLINK cosmetic and build fixes

Please find two small "fixes" one that corrects some stylistic changes and
another one that fixes an actual build failure in sfp.c. Since PHYLINK is
not directly visible to user, and there are no in-tree users yet (coming)
this is not targeted at "net" but "net-next" instead.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: phy: Fix sfp.c build against GPIO definitions
Florian Fainelli [Tue, 31 Oct 2017 04:42:58 +0000 (21:42 -0700)]
net: phy: Fix sfp.c build against GPIO definitions

include/gpio.h does not contain the references we want, we should be including
linux/gpio/consumer.h instead.

Fixes: 73970055450e ("sfp: add SFP module support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: phy: Cosmetic fixes to phylink/sfp/sfp-bus.c
Florian Fainelli [Tue, 31 Oct 2017 04:42:57 +0000 (21:42 -0700)]
net: phy: Cosmetic fixes to phylink/sfp/sfp-bus.c

Perform a number of stylistic changes to phylink.c, sfp.c and sfp-bus.c:

- align with netdev-style comments
- align function arguments to the opening parenthesis
- remove blank lines
- fixup a few lines over 80 columns

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: document answers to common questions about BPF
Alexei Starovoitov [Tue, 31 Oct 2017 02:39:56 +0000 (19:39 -0700)]
bpf: document answers to common questions about BPF

to address common misconceptions about what BPF is and what it's not
add short BPF Q&A that clarifies core BPF design principles and
answers some common questions.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: display hw address of source machine during ipv6 DAD failure
Vishwanath Pai [Mon, 30 Oct 2017 23:38:52 +0000 (19:38 -0400)]
net: display hw address of source machine during ipv6 DAD failure

This patch updates the error messages displayed in kernel log to include
hwaddress of the source machine that caused ipv6 duplicate address
detection failures.

Examples:

a) When we receive a NA packet from another machine advertising our
address:

ICMPv6: NA: 34:ab:cd:56:11:e8 advertised our address 2001:db8:: on eth0!

b) When we detect DAD failure during address assignment to an interface:

IPv6: eth0: IPv6 duplicate address 2001:db8:: used by 34:ab:cd:56:11:e8
detected!

v2:
    Changed %pI6 to %pI6c in ndisc_recv_na()
    Chaged the v6 address in the commit message to 2001:db8::

Suggested-by: Igor Lubashev <ilubashe@akamai.com>
Signed-off-by: Vishwanath Pai <vpai@akamai.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotun/tap: sanitize TUNSETSNDBUF input
Craig Gallek [Mon, 30 Oct 2017 22:50:11 +0000 (18:50 -0400)]
tun/tap: sanitize TUNSETSNDBUF input

Syzkaller found several variants of the lockup below by setting negative
values with the TUNSETSNDBUF ioctl.  This patch adds a sanity check
to both the tun and tap versions of this ioctl.

  watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [repro:2389]
  Modules linked in:
  irq event stamp: 329692056
  hardirqs last  enabled at (329692055): [<ffffffff824b8381>] _raw_spin_unlock_irqrestore+0x31/0x75
  hardirqs last disabled at (329692056): [<ffffffff824b9e58>] apic_timer_interrupt+0x98/0xb0
  softirqs last  enabled at (35659740): [<ffffffff824bc958>] __do_softirq+0x328/0x48c
  softirqs last disabled at (35659731): [<ffffffff811c796c>] irq_exit+0xbc/0xd0
  CPU: 0 PID: 2389 Comm: repro Not tainted 4.14.0-rc7 #23
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
  task: ffff880009452140 task.stack: ffff880006a20000
  RIP: 0010:_raw_spin_lock_irqsave+0x11/0x80
  RSP: 0018:ffff880006a27c50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
  RAX: ffff880009ac68d0 RBX: ffff880006a27ce0 RCX: 0000000000000000
  RDX: 0000000000000001 RSI: ffff880006a27ce0 RDI: ffff880009ac6900
  RBP: ffff880006a27c60 R08: 0000000000000000 R09: 0000000000000000
  R10: 0000000000000001 R11: 000000000063ff00 R12: ffff880009ac6900
  R13: ffff880006a27cf8 R14: 0000000000000001 R15: ffff880006a27cf8
  FS:  00007f4be4838700(0000) GS:ffff88000cc00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000020101000 CR3: 0000000009616000 CR4: 00000000000006f0
  Call Trace:
   prepare_to_wait+0x26/0xc0
   sock_alloc_send_pskb+0x14e/0x270
   ? remove_wait_queue+0x60/0x60
   tun_get_user+0x2cc/0x19d0
   ? __tun_get+0x60/0x1b0
   tun_chr_write_iter+0x57/0x86
   __vfs_write+0x156/0x1e0
   vfs_write+0xf7/0x230
   SyS_write+0x57/0xd0
   entry_SYSCALL_64_fastpath+0x1f/0xbe
  RIP: 0033:0x7f4be4356df9
  RSP: 002b:00007ffc18101c08 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4be4356df9
  RDX: 0000000000000046 RSI: 0000000020101000 RDI: 0000000000000005
  RBP: 00007ffc18101c40 R08: 0000000000000001 R09: 0000000000000001
  R10: 0000000000000001 R11: 0000000000000293 R12: 0000559c75f64780
  R13: 00007ffc18101d30 R14: 0000000000000000 R15: 0000000000000000

Fixes: 33dccbb050bb ("tun: Limit amount of queued packets per device")
Fixes: 20d29d7a916a ("net: macvtap driver")
Signed-off-by: Craig Gallek <kraig@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: b53: Have b53_hdr_setup() enable/disable tagging
Florian Fainelli [Mon, 30 Oct 2017 22:17:20 +0000 (15:17 -0700)]
net: dsa: b53: Have b53_hdr_setup() enable/disable tagging

Have b53_hdr_setup() check what kind of tagging protocol is configured
(Broadcom or none) and apply the correct settings in both cases.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'netrom-cleanups'
David S. Miller [Wed, 1 Nov 2017 11:46:41 +0000 (20:46 +0900)]
Merge branch 'netrom-cleanups'

Gustavo A. R. Silva says:

====================
netrom: refactor code and mark expected switch fall-throughs

The aim of this patchset is firstly to refactor code in nr_route.c in order to make it
easier to read and maintain and, secondly, to mark some expected switch fall-throughs
in preparation to enabling -Wimplicit-fallthrough.

I have to mention that I did not implement any unit test.
If someone has any suggestions on how I could test this piece of code
it'd be greatly appreciated.

Changes in v2:
 - Make use of the swap macro and remove inline keyword as suggested by
   Walter Harms and Kevin Dawson.

Changes in v3:
 - Update subject for both patches.
 - Add this cover letter as suggested by David Miller.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: netrom: nr_route: mark expected switch fall-throughs
Gustavo A. R. Silva [Fri, 27 Oct 2017 05:51:08 +0000 (00:51 -0500)]
net: netrom: nr_route: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: netrom: nr_route: refactor code in nr_add_node
Gustavo A. R. Silva [Fri, 27 Oct 2017 05:51:04 +0000 (00:51 -0500)]
net: netrom: nr_route: refactor code in nr_add_node

Code refactoring in order to make the code easier to read and maintain.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: i2c: Fix buffer increment counter for write transaction
Vadim Pasternak [Wed, 1 Nov 2017 11:10:42 +0000 (12:10 +0100)]
mlxsw: i2c: Fix buffer increment counter for write transaction

It fixes a problem for the last chunk where 'chunk_size' is smaller than
MLXSW_I2C_BLK_MAX and data is copied to the wrong offset, overriding
previous data.

Fixes: 6882b0aee180 ("mlxsw: Introduce support for I2C bus")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
David S. Miller [Wed, 1 Nov 2017 10:27:46 +0000 (19:27 +0900)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2017-11-01

1) Fix a memleak when a packet matches a policy
   without a matching state.

2) Reset the socket cached dst_entry when inserting
   a socket policy, otherwise the policy might be
   ignored. From Jonathan Basseri.

3) Fix GSO for a IPsec, GRE tunnel combination.
   We reset the encapsulation field at the skb
   too erly, as a result GRE does not segment
   GSO packets. Fix this by resetting the the
   encapsulation field right before the
   transformation where the inner headers get
   invalid.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: tipc: Convert timers to use timer_setup()
Kees Cook [Mon, 30 Oct 2017 21:06:45 +0000 (14:06 -0700)]
net: tipc: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: tipc-discussion@lists.sourceforge.net
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodrivers/net: tundra: Convert timers to use timer_setup()
Kees Cook [Mon, 30 Oct 2017 21:05:41 +0000 (14:05 -0700)]
drivers/net: tundra: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Philippe Reynes <tremyfr@gmail.com>
Cc: "yuval.shaia@oracle.com" <yuval.shaia@oracle.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodrivers/net: ntb_netdev: Convert timers to use timer_setup()
Kees Cook [Mon, 30 Oct 2017 21:05:12 +0000 (14:05 -0700)]
drivers/net: ntb_netdev: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Jon Mason <jdmason@kudzu.us>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Allen Hubbe <Allen.Hubbe@emc.com>
Cc: linux-ntb@googlegroups.com
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: avoid rcu_dereference inside bpf_event_mutex lock region
Yonghong Song [Mon, 30 Oct 2017 20:50:22 +0000 (13:50 -0700)]
bpf: avoid rcu_dereference inside bpf_event_mutex lock region

During perf event attaching/detaching bpf programs,
the tp_event->prog_array change is protected by the
bpf_event_mutex lock in both attaching and deteching
functions. Although tp_event->prog_array is a rcu
pointer, rcu_derefrence is not needed to access it
since mutex lock will guarantee ordering.

Verified through "make C=2" that sparse
locking check still happy with the new change.

Also change the label name in perf_event_{attach,detach}_bpf_prog
from "out" to "unlock" to reflect the code action after the label.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: sit: Update lookup to handle links set to L3 slave
David Ahern [Mon, 30 Oct 2017 17:07:17 +0000 (10:07 -0700)]
net: sit: Update lookup to handle links set to L3 slave

Using SIT tunnels with VRFs works fine if the underlay device is in a
VRF and the link parameter is set to the VRF device. e.g.,

    ip tunnel add jtun mode sit remote <addr> local <addr> dev myvrf

Update the device check to allow the link to be the enslaved device as
well. e.g.,

    ip tunnel add jtun mode sit remote <addr> local <addr> dev eth4

where eth4 is enslaved to myvrf.

Reported-by: Jeff Barnhill <0xeffeff@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoatm: iphase: Fix space before '[' error.
Arvind Yadav [Mon, 30 Oct 2017 15:52:03 +0000 (21:22 +0530)]
atm: iphase: Fix space before '[' error.

Fix checkpatch.pl error:
ERROR: space prohibited before open square bracket '['.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: bridge: add neigh_suppress to bridge port policies
Nikolay Aleksandrov [Mon, 30 Oct 2017 10:56:33 +0000 (12:56 +0200)]
net: bridge: add neigh_suppress to bridge port policies

Add an entry for IFLA_BRPORT_NEIGH_SUPPRESS to bridge port policies.

Fixes: 821f1b21cabb ("bridge: add new BR_NEIGH_SUPPRESS port flag to suppress arp and nd flood")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'mvpp2-various-improvements'
David S. Miller [Wed, 1 Nov 2017 03:28:33 +0000 (12:28 +0900)]
Merge branch 'mvpp2-various-improvements'

Antoine Tenart says:

====================
net: mvpp2: various improvements

This series includes various patches improving the Marvell PPv2 driver.
I send them as a series to avoid any possible merge conflict.

- Patches 1 and 2 improve the initializing of the Tx and Rx FIFO.
- Patch 3 initialize the RSS table to evenly distribute the ingress
  packets across multiple Rx queues based on their hashes.
- Patch 4 limits the number of TSO segments sent to the driver, to avoid
  having more segments to handle than the corresponding number of
  available descriptors.
- Patch 5 and 6 are cosmetic improvements.

This applies on today's net-next branch, The patches were tested
extensively (I ran iperf and http downloads in parallel, transferring
TBs of data).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: simplify the Tx desc set DMA logic
Antoine Tenart [Mon, 30 Oct 2017 10:23:33 +0000 (11:23 +0100)]
net: mvpp2: simplify the Tx desc set DMA logic

Two functions were always used to set the DMA addresses in Tx
descriptors, because this address is split into a base+offset in the
descriptors. A mask was used to come up with the base and offset
addresses and two functions were called, mvpp2_txdesc_dma_addr_set() and
mvpp2_txdesc_offset_set().

This patch moves the base+offset calculation logic to
mvpp2_txdesc_dma_addr_set(), and removes mvpp2_txdesc_offset_set() to
simplify things.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: use the aggr txq size define everywhere
Antoine Tenart [Mon, 30 Oct 2017 10:23:32 +0000 (11:23 +0100)]
net: mvpp2: use the aggr txq size define everywhere

Cosmetic patch using the MVPP2_AGGR_TXQ_SIZE everywhere instead of the
size field of aggr_txq, as the size never change and is always equal to
the MVPP2_AGGR_TXQ_SIZE define.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: limit TSO segments and use stop/wake thresholds
Antoine Tenart [Mon, 30 Oct 2017 10:23:31 +0000 (11:23 +0100)]
net: mvpp2: limit TSO segments and use stop/wake thresholds

Too many TSO descriptors can be required for the default queue size,
when using small MSS values for example. Prevent this by adding a
maximum number of allowed TSO segments (300). In addition set a stop and
a wake thresholds to stop the queue when there's no room for a 1 "worst
case scenario skb". Wake up the queue when the number of descriptors is
low enough.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: initialize the RSS tables
Antoine Tenart [Mon, 30 Oct 2017 10:23:30 +0000 (11:23 +0100)]
net: mvpp2: initialize the RSS tables

This patch initialize the RSS tables to evenly (depending on the packets
RSS hashes) distribute the packets across port Rx queues. This helps to
handle packets on different CPUs to improve performances, as more queues
will be used in parallel.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: initialize the Tx FIFO size
Antoine Tenart [Mon, 30 Oct 2017 10:23:29 +0000 (11:23 +0100)]
net: mvpp2: initialize the Tx FIFO size

So far only the Rx FIFO size was initialized. For PPv2.2 the Tx FIFO
size can be set as well. This patch initializes the Tx FIFO size for
PPv2.2 controllers to 3K.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: mvpp2: set the Rx FIFO size depending on the port speeds for PPv2.2
Antoine Tenart [Mon, 30 Oct 2017 10:23:28 +0000 (11:23 +0100)]
net: mvpp2: set the Rx FIFO size depending on the port speeds for PPv2.2

The Rx FIFO size was set to the same value for all ports. This patch
sets it depending on the maximum speed a given port can handle. This is
only working for PPv2.2.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: reg: Add high and low temperature thresholds
Ido Schimmel [Mon, 30 Oct 2017 09:51:18 +0000 (10:51 +0100)]
mlxsw: reg: Add high and low temperature thresholds

The ASIC has the ability to generate events whenever a sensor indicates
the temperature goes above or below its high or low thresholds,
respectively.

In new firmware versions the firmware enforces a minimum of 5
degrees Celsius difference between both thresholds. Make the driver
conform to this requirement.

Note that this is required even when the events are disabled, as in
certain systems interrupts are generated via GPIO based on these
thresholds.

Fixes: 85926f877040 ("mlxsw: reg: Add definition of temperature management registers")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Remove Yotam from mlxfw
Yuval Mintz [Mon, 30 Oct 2017 09:41:37 +0000 (11:41 +0200)]
MAINTAINERS: Remove Yotam from mlxfw

Provide a mailing list for maintenance of the module instead.

Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Update Yotam's E-mail
Yotam Gigi [Mon, 30 Oct 2017 09:41:36 +0000 (11:41 +0200)]
MAINTAINERS: Update Yotam's E-mail

For the time being I will be available in my private mail. Update both the
MAINTAINERS file and the individual modules MODULE_AUTHOR directive with
the new address.

Signed-off-by: Yotam Gigi <yotam.gi@gmail.com>
Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: hns: set correct return value
Pan Bian [Mon, 30 Oct 2017 08:50:01 +0000 (16:50 +0800)]
net: hns: set correct return value

The function of_parse_phandle() returns a NULL pointer if it cannot
resolve a phandle property to a device_node pointer. In function
hns_nic_dev_probe(), its return value is passed to PTR_ERR to extract
the error code. However, in this case, the extracted error code will
always be zero, which is unexpected.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec...
David S. Miller [Wed, 1 Nov 2017 03:16:14 +0000 (12:16 +0900)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec-next

Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2017-10-30

1) Change some variables that can't be negative
   from int to unsigned int. From Alexey Dobriyan.

2) Remove a redundant header initialization in esp6.
   From Colin Ian King.

3) Some BUG to BUG_ON conversions.
   From Gustavo A. R. Silva.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: lapbether: fix double free
Pan Bian [Sun, 29 Oct 2017 13:57:22 +0000 (21:57 +0800)]
net: lapbether: fix double free

The function netdev_priv() returns the private data of the device. The
memory to store the private data is allocated in alloc_netdev() and is
released in netdev_free(). Calling kfree() on the return value of
netdev_priv() after netdev_free() results in a double free bug.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomkiss: remove redundant assignment of len to ax->mtu
Colin Ian King [Sun, 29 Oct 2017 13:30:25 +0000 (13:30 +0000)]
mkiss: remove redundant assignment of len to ax->mtu

Variable len is being assigned a value that is never read,
hence the assignment is redundant and can be removed. Cleans
up clang warning:

drivers/net/hamradio/mkiss.c:443:3: warning: Value stored to
'len' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoselftests/bpf: remove useless bpf_trace_printk
Alexei Starovoitov [Sun, 29 Oct 2017 00:17:13 +0000 (17:17 -0700)]
selftests/bpf: remove useless bpf_trace_printk

sockmap test is using two programs that use bpf_trace_printk()
which prints into trace_pipe, but nothing is reading it.
Remove it.

Fixes: 6f6d33f3b3d0 ("bpf: selftests add sockmap tests")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dccp: ccids: lib: packet_history: use swap macro in tfrc_rx_hist_swap
Gustavo A. R. Silva [Sat, 28 Oct 2017 20:48:47 +0000 (15:48 -0500)]
net: dccp: ccids: lib: packet_history: use swap macro in tfrc_rx_hist_swap

Make use of the swap macro and remove unnecessary variable tmp.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: decnet: dn_nsp_out: use swap macro in dn_mk_ack_header
Gustavo A. R. Silva [Sat, 28 Oct 2017 20:39:48 +0000 (15:39 -0500)]
net: decnet: dn_nsp_out: use swap macro in dn_mk_ack_header

Make use of the swap macro and remove unnecessary variable tmp.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: decnet: dn_nsp_in: use swap macro in dn_nsp_rx_packet
Gustavo A. R. Silva [Sat, 28 Oct 2017 19:38:45 +0000 (14:38 -0500)]
net: decnet: dn_nsp_in: use swap macro in dn_nsp_rx_packet

Make use of the swap macro and remove unnecessary variable tmp.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoforcedeth: replace pci_alloc_consistent with dma_alloc_coherent
Zhu Yanjun [Sat, 28 Oct 2017 12:25:30 +0000 (08:25 -0400)]
forcedeth: replace pci_alloc_consistent with dma_alloc_coherent

The functions pci_alloc_consistent is obsolete. So it is replaced
with dma_alloc_coherent

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoip_vti: remove the useless err_count check in vti_xmit
Xin Long [Sat, 28 Oct 2017 11:46:21 +0000 (19:46 +0800)]
ip_vti: remove the useless err_count check in vti_xmit

Unlike ipip and gre, ip_vti never uses err_count in vti4_err,
so no need to check err_count in vti_xmit, it's value always 0.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: bcmgenet: Avoid calling platform_device_put() twice in bcmgenet_mii_exit()
Wei Yongjun [Sat, 28 Oct 2017 05:05:46 +0000 (05:05 +0000)]
net: bcmgenet: Avoid calling platform_device_put() twice in bcmgenet_mii_exit()

Remove platform_device_put() call after platform_device_unregister()
from function bcmgenet_mii_exit(), otherwise, we will call
platform_device_put() twice.

Fixes: 9a4e79697009 ("net: bcmgenet: utilize generic Broadcom UniMAC MDIO controller driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'extack-nonfatal'
David S. Miller [Wed, 1 Nov 2017 02:50:43 +0000 (11:50 +0900)]
Merge branch 'extack-nonfatal'

David Ahern says:

====================
net: Allow non-fatal messages to be passed in extack

There are many cases where networking subsystems throw non-fatal warning
messages that end up in dmesg / kernel log to which a user making the
change is completely oblivious. This set makes the extack facility
usable for returning such messages.

The case in point here is spectrum and adding FIB rules which causes an
offload abort. Make the use case more user friendly by letting the user
know that offload is no longer happening because of the rule change.

v2
- kept the offload abort in a work queue entry per Ido's comment
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agomlxsw: spectrum_router: Return extack message on abort due to fib rules
David Ahern [Sat, 28 Oct 2017 00:37:14 +0000 (17:37 -0700)]
mlxsw: spectrum_router: Return extack message on abort due to fib rules

Adding a FIB rule on a spectrum platform silently aborts FIB offload:
    $ ip ru add pref 99 from all to 192.168.1.1 table 10
    $ dmesg -c
    [  623.144736] mlxsw_spectrum 0000:03:00.0: FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.

This patch reworks FIB rule handling to return a message to the user:
    $ ip ru add pref 99 from all to 8.8.8.8 table 11
    Error: spectrum: FIB rules not supported. Aborting offload.

spectrum currently only checks whether the fib rule is a default rule or
an l3mdev rule, both of which it knows how to handle. Any other it aborts
FIB offload. Move the processing to check the rule type inline with the
user request. If the rule is an unsupported one, then a work queue entry
is used to abort the offload. Change the rule delete handling to just
return since it does nothing at the moment.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: Add extack to fib_notifier_info
David Ahern [Sat, 28 Oct 2017 00:37:13 +0000 (17:37 -0700)]
net: Add extack to fib_notifier_info

Add extack to fib_notifier_info and plumb through stack to
call_fib_rule_notifiers, call_fib_entry_notifiers and
call_fib6_entry_notifiers. This allows notifer handlers to
return messages to user.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetlink: Allow ext_ack to carry non-error messages
David Ahern [Sat, 28 Oct 2017 00:37:12 +0000 (17:37 -0700)]
netlink: Allow ext_ack to carry non-error messages

The NLMSGERR API already carries data (eg, a cookie) on the success path.
Allow a message string to be returned as well.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'dsa-port-parsing'
David S. Miller [Wed, 1 Nov 2017 02:47:45 +0000 (11:47 +0900)]
Merge branch 'dsa-port-parsing'

Vivien Didelot says:

====================
net: dsa: add port parsing functions

This patchset adds port parsing functions called early in the new
bindings parsing stage, which regroup all the fetching of static data
available at the port level, including the port's type, name and CPU
master interface.

This simplifies the rest of the code which does not need to dig into
device tree or platform data again in order to check a port's type or
name.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: remove name arg from slave create
Vivien Didelot [Fri, 27 Oct 2017 19:55:19 +0000 (15:55 -0400)]
net: dsa: remove name arg from slave create

Now that slave dsa_port always have their name set, there is no need to
pass it to dsa_slave_create() anymore. Remove this argument.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: get port name at parse time
Vivien Didelot [Fri, 27 Oct 2017 19:55:18 +0000 (15:55 -0400)]
net: dsa: get port name at parse time

Get the optional "label" property and assign a default one directly at
parse time instead of doing it when creating the slave.

For legacy, simply assign the port name stored in cd->port_names.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: get master device at port parsing time
Vivien Didelot [Fri, 27 Oct 2017 19:55:17 +0000 (15:55 -0400)]
net: dsa: get master device at port parsing time

Fetching the master device can be done directly when a port is parsed
from device tree or pdata, instead of waiting until dsa_dst_parse.

Now that -EPROBE_DEFER is returned before we add the switch to the tree,
there is no need to check for this error after dsa_dst_parse.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: get port type at parse time
Vivien Didelot [Fri, 27 Oct 2017 19:55:15 +0000 (15:55 -0400)]
net: dsa: get port type at parse time

Assign a port's type at parsed time instead of waiting for the tree to
be completed.

Because this is now done earlier, we can use the port's type in
dsa_port_is_* helpers instead of digging again in topology description.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: add port parse functions
Vivien Didelot [Fri, 27 Oct 2017 19:55:14 +0000 (15:55 -0400)]
net: dsa: add port parse functions

Add symmetrical DSA port parsing functions for pdata and device tree,
used to parse and validate a given port node or platform data.

They don't do much for the moment but will be extended later on to
assign a port type and get device references.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: get ports within parsing code
Vivien Didelot [Fri, 27 Oct 2017 19:55:13 +0000 (15:55 -0400)]
net: dsa: get ports within parsing code

There is no point into hiding the -EINVAL error code in ERR_PTR from a
dsa_get_ports function, simply get the "ports" node directly from within
the dsa_parse_ports_dn function.

This also has the effect to make the pdata and device tree handling code
symmetrical inside _dsa_register_switch.

At the same time, rename dsa_parse_ports_dn to dsa_parse_ports_of
because _of is a more common suffix for device tree parsing functions.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: remove SK_REDIRECT from UAPI
John Fastabend [Wed, 1 Nov 2017 02:17:31 +0000 (19:17 -0700)]
bpf: remove SK_REDIRECT from UAPI

Now that SK_REDIRECT is no longer a valid return code. Remove it
from the UAPI completely. Then do a namespace remapping internal
to sockmap so SK_REDIRECT is no longer externally visible.

Patchs primary change is to do a namechange from SK_REDIRECT to
__SK_REDIRECT

Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: reduce verifier memory consumption
Alexei Starovoitov [Wed, 1 Nov 2017 01:16:05 +0000 (18:16 -0700)]
bpf: reduce verifier memory consumption

the verifier got progressively smarter over time and size of its internal
state grew as well. Time to reduce the memory consumption.

Before:
sizeof(struct bpf_verifier_state) = 6520
After:
sizeof(struct bpf_verifier_state) = 896

It's done by observing that majority of BPF programs use little to
no stack whereas verifier kept all of 512 stack slots ready always.
Instead dynamically reallocate struct verifier state when stack
access is detected.
Runtime difference before vs after is within a noise.
The number of processed instructions stays the same.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'liquidio-switchdev-support'
David S. Miller [Wed, 1 Nov 2017 02:39:52 +0000 (11:39 +0900)]
Merge branch 'liquidio-switchdev-support'

Vijaya Mohan Guvva says:

====================
liquidio: switchdev support for LiquidIO NIC

patch1 of this patch set adds switchdev support for SRIOV capable
LiquidIO NIC, so that for every SRIOV VF on LiquidIO, a representor
netdev is created on hypervisor. It also has changes to send representor
interface configurations like admin state and MTU to LiquidIO firmware and
to retrieve HW counted VF stats for VF representor.

patch2 adds support for switchdev enable/disable from devlink

Patchset Change Log:
  V2 -> V3:
    * Use mac address as the physical switchID.
    * Check for eswitch_mode before returning switchID

  V1 -> V2:
    * Name the representors "pfXvfY".
    * Drop patch3 (ethtool support for switchdev ports) that was in V1
      because it's not necessary.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>