Commit graph

1398 commits

Author SHA1 Message Date
Randy Dunlap 799381e49b Documentation: fix netdev-FAQ.rst markup warning
Fix ReST underline warning:

./Documentation/networking/netdev-FAQ.rst:135: WARNING: Title underline too short.

Q: I made changes to only a few patches in a patch series should I resend only those changed?
--------------------------------------------------------------------------------------------

Fixes: ffa9125373 ("Documentation: networking: Update netdev-FAQ regarding patches")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-01 09:12:51 -04:00
David S. Miller b145745fc8 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:

====================
pull request (net): ipsec 2019-04-30

1) Fix an out-of-bound array accesses in __xfrm_policy_unlink.
   From YueHaibing.

2) Reset the secpath on failure in the ESP GRO handlers
   to avoid dereferencing an invalid pointer on error.
   From Myungho Jung.

3) Add and revert a patch that tried to add rcu annotations
   to netns_xfrm. From Su Yanjun.

4) Wait for rcu callbacks before freeing xfrm6_tunnel_spi_kmem.
   From Su Yanjun.

5) Fix forgotten vti4 ipip tunnel deregistration.
   From Jeremy Sowden:

6) Remove some duplicated log messages in vti4.
   From Jeremy Sowden.

7) Don't use IPSEC_PROTO_ANY when flushing states because
   this will flush only IPsec portocol speciffic states.
   IPPROTO_ROUTING states may remain in the lists when
   doing net exit. Fix this by replacing IPSEC_PROTO_ANY
   with zero. From Cong Wang.

8) Add length check for UDP encapsulation to fix "Oversized IP packet"
   warnings on receive side. From Sabrina Dubroca.

9) Fix xfrm interface lookup when the interface is associated to
   a vrf layer 3 master device. From Martin Willi.

10) Reload header pointers after pskb_may_pull() in _decode_session4(),
    otherwise we may read from uninitialized memory.

11) Update the documentation about xfrm[46]_gc_thresh, it
    is not used anymore after the flowcache removal.
    From Nicolas Dichtel.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-30 09:11:10 -04:00
Corentin Labbe 26d1b8586b Documentation: decnet: remove reference to CONFIG_DECNET_ROUTE_FWMARK
CONFIG_DECNET_ROUTE_FWMARK was removed in commit 47dcf0cb10 ("[NET]: Rethink mark field in struct flowi")
Since nothing replace it (and nothindg need to replace it, simply remove
it from documentation.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-21 11:25:11 -07:00
ZhangXiaoxu 19fad20d15 ipv4: set the tcp_min_rtt_wlen range from 0 to one day
There is a UBSAN report as below:
UBSAN: Undefined behaviour in net/ipv4/tcp_input.c:2877:56
signed integer overflow:
2147483647 * 1000 cannot be represented in type 'int'
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.1.0-rc4-00058-g582549e #1
Call Trace:
 <IRQ>
 dump_stack+0x8c/0xba
 ubsan_epilogue+0x11/0x60
 handle_overflow+0x12d/0x170
 ? ttwu_do_wakeup+0x21/0x320
 __ubsan_handle_mul_overflow+0x12/0x20
 tcp_ack_update_rtt+0x76c/0x780
 tcp_clean_rtx_queue+0x499/0x14d0
 tcp_ack+0x69e/0x1240
 ? __wake_up_sync_key+0x2c/0x50
 ? update_group_capacity+0x50/0x680
 tcp_rcv_established+0x4e2/0xe10
 tcp_v4_do_rcv+0x22b/0x420
 tcp_v4_rcv+0xfe8/0x1190
 ip_protocol_deliver_rcu+0x36/0x180
 ip_local_deliver+0x15b/0x1a0
 ip_rcv+0xac/0xd0
 __netif_receive_skb_one_core+0x7f/0xb0
 __netif_receive_skb+0x33/0xc0
 netif_receive_skb_internal+0x84/0x1c0
 napi_gro_receive+0x2a0/0x300
 receive_buf+0x3d4/0x2350
 ? detach_buf_split+0x159/0x390
 virtnet_poll+0x198/0x840
 ? reweight_entity+0x243/0x4b0
 net_rx_action+0x25c/0x770
 __do_softirq+0x19b/0x66d
 irq_exit+0x1eb/0x230
 do_IRQ+0x7a/0x150
 common_interrupt+0xf/0xf
 </IRQ>

It can be reproduced by:
  echo 2147483647 > /proc/sys/net/ipv4/tcp_min_rtt_wlen

Fixes: f672258391 ("tcp: track min RTT using windowed min-filter")
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-17 13:57:11 -07:00
Marc Dionne 4611da30d6 rxrpc: Make rxrpc_kernel_check_life() indicate if call completed
Make rxrpc_kernel_check_life() pass back the life counter through the
argument list and return true if the call has not yet completed.

Suggested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12 16:57:23 -07:00
Nicolas Dichtel 837f741165 xfrm: update doc about xfrm[46]_gc_thresh
Those entries are not used anymore.

CC: Florian Westphal <fw@strlen.de>
Fixes: 09c7570480 ("xfrm: remove flow cache")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2019-04-12 09:38:23 +02:00
Stanislav Fomichev 5eed789862 flow_dissector: rst'ify documentation
Rename bpf_flow_dissector.txt to bpf_flow_dissector.rst and fix
formatting. Also, link it from the Documentation/networking/index.rst.

Tested with 'make htmldocs' to make sure it looks reasonable.

Fixes: ae82899bbe ("flow_dissector: document BPF flow dissector environment")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-04 15:25:23 +02:00
Stanislav Fomichev ae82899bbe flow_dissector: document BPF flow dissector environment
Short doc on what BPF flow dissector should expect in the input
__sk_buff and flow_keys.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-03 16:49:48 +02:00
David S. Miller e0831ef716 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree:

1) Remove a direct dependency with IPv6 introduced by the
   sip_external_media feature, from Alin Nastac.

2) Fix bogus ENOENT when removing interval elements from set.

3) Set transport_header from br_netfilter to mimic the stack
   behaviour, this partially fixes a checksum validation bug
   from the SCTP connection tracking, from Xin Long.

4) Fix undefined reference to symbol in xt_TEE, due to missing
   Kconfig dependencies, from Arnd Bergmann.

5) Check for NULL in skb_header_pointer() calls in ip6t_shr,
   from Kangjie Lu.

6) Fix bogus EBUSY when removing an existing conntrack helper from
   a transaction.

7) Fix module autoload of the redirect extension.

8) Remove duplicated transition in flowtable diagram in the existing
   documentation.

9) Missing .release_ops call from error path in newrule() which
   results module refcount leak, from Taehee Yoo.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-21 10:07:00 -07:00
Pablo Neira Ayuso 7c9abe12b3 netfilter: nf_flowtable: remove duplicated transition in diagram
No direct transition from prerouting to forward hook, routing lookup
needs to happen first.

Fixes: 19b351f16f ("netfilter: add flowtable documentation")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-03-19 15:02:52 +01:00
Florian Fainelli ffa9125373 Documentation: networking: Update netdev-FAQ regarding patches
Provide an explanation of what is expected with respect to sending new
versions of specific patches within a patch series, as well as what
happens if an earlier patch series accidentally gets merged).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-18 20:09:58 -07:00
Tobias Klauser 25208dd856 doc: fix link to MSG_ZEROCOPY patchset
Use https and link to the patch directly.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-18 09:50:21 -07:00
Randy Dunlap 65e9a6d25d networking: fix snmp_counter.rst Doc. Warnings
Fix documentation markup warnings in snmp_counter.rst:

Documentation/networking/snmp_counter.rst:416: WARNING: Title underline too short.
Documentation/networking/snmp_counter.rst:684: WARNING: Bullet list ends without a blank line; unexpected unindent.
Documentation/networking/snmp_counter.rst:693: WARNING: Title underline too short.
Documentation/networking/snmp_counter.rst:707: WARNING: Bullet list ends without a blank line; unexpected unindent.
Documentation/networking/snmp_counter.rst:712: WARNING: Bullet list ends without a blank line; unexpected unindent.
Documentation/networking/snmp_counter.rst:722: WARNING: Title underline too short.
Documentation/networking/snmp_counter.rst:733: WARNING: Bullet list ends without a blank line; unexpected unindent.
Documentation/networking/snmp_counter.rst:736: WARNING: Bullet list ends without a blank line; unexpected unindent.
Documentation/networking/snmp_counter.rst:739: WARNING: Bullet list ends without a blank line; unexpected unindent.

Fixes: 80cc49507b ("net: Add part of TCP counts explanations in snmp_counters.rst")
Fixes: 8e2ea53a83 ("add snmp counters document")
Fixes: a6c7c7aac2 ("net: add document for several snmp counters")

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: yupeng <yupeng0921@gmail.com>
2019-03-17 19:37:08 -07:00
Linus Torvalds 1a29e85750 A fairly routine cycle for docs - lots of typo fixes, some new documents,
and more translations.  There's also some LICENSES adjustments from
 Thomas.
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Merge tag 'docs-5.1' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "A fairly routine cycle for docs - lots of typo fixes, some new
  documents, and more translations. There's also some LICENSES
  adjustments from Thomas"

* tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits)
  docs: Bring some order to filesystem documentation
  Documentation/locking/lockdep: Drop last two chars of sample states
  doc: rcu: Suspicious RCU usage is a warning
  docs: driver-api: iio: fix errors in documentation
  Documentation/process/howto: Update for 4.x -> 5.x versioning
  docs: Explicitly state that the 'Fixes:' tag shouldn't split lines
  doc: security: Add kern-doc for lsm_hooks.h
  doc: sctp: Merge and clean up rst files
  Docs: Correct /proc/stat path
  scripts/spdxcheck.py: fix C++ comment style detection
  doc: fix typos in license-rules.rst
  Documentation: fix admin-guide/README.rst minimum gcc version requirement
  doc: process: complete removal of info about -git patches
  doc: translations: sync translations 'remove info about -git patches'
  perf-security: wrap paragraphs on 72 columns
  perf-security: elaborate on perf_events/Perf privileged users
  perf-security: document collected perf_events/Perf data categories
  perf-security: document perf_events/Perf resource control
  sysfs.txt: add note on available attribute macros
  docs: kernel-doc: typo "if ... if" -> "if ... is"
  ...
2019-03-09 09:56:17 -08:00
David S. Miller f7fb7c1a1c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2019-03-04

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

The main changes are:

1) Add AF_XDP support to libbpf. Rationale is to facilitate writing
   AF_XDP applications by offering higher-level APIs that hide many
   of the details of the AF_XDP uapi. Sample programs are converted
   over to this new interface as well, from Magnus.

2) Introduce a new cant_sleep() macro for annotation of functions
   that cannot sleep and use it in BPF_PROG_RUN() to assert that
   BPF programs run under preemption disabled context, from Peter.

3) Introduce per BPF prog stats in order to monitor the usage
   of BPF; this is controlled by kernel.bpf_stats_enabled sysctl
   knob where monitoring tools can make use of this to efficiently
   determine the average cost of programs, from Alexei.

4) Split up BPF selftest's test_progs similarly as we already
   did with test_verifier. This allows to further reduce merge
   conflicts in future and to get more structure into our
   quickly growing BPF selftest suite, from Stanislav.

5) Fix a bug in BTF's dedup algorithm which can cause an infinite
   loop in some circumstances; also various BPF doc fixes and
   improvements, from Andrii.

6) Various BPF sample cleanups and migration to libbpf in order
   to further isolate the old sample loader code (so we can get
   rid of it at some point), from Jakub.

7) Add a new BPF helper for BPF cgroup skb progs that allows
   to set ECN CE code point and a Host Bandwidth Manager (HBM)
   sample program for limiting the bandwidth used by v2 cgroups,
   from Lawrence.

8) Enable write access to skb->queue_mapping from tc BPF egress
   programs in order to let BPF pick TX queue, from Jesper.

9) Fix a bug in BPF spinlock handling for map-in-map which did
   not propagate spin_lock_off to the meta map, from Yonghong.

10) Fix a bug in the new per-CPU BPF prog counters to properly
    initialize stats for each CPU, from Eric.

11) Add various BPF helper prototypes to selftest's bpf_helpers.h,
    from Willem.

12) Fix various BPF samples bugs in XDP and tracing progs,
    from Toke, Daniel and Yonghong.

13) Silence preemption splat in test_bpf after BPF_PROG_RUN()
    enforces it now everywhere, from Anders.

14) Fix a signedness bug in libbpf's btf_dedup_ref_type() to
    get error handling working, from Dan.

15) Fix bpftool documentation and auto-completion with regards
    to stream_{verdict,parser} attach types, from Alban.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-04 10:14:31 -08:00
Florian Fainelli 91cf8eceff switchdev: Remove unused transaction item queue
There are no more in tree users of the
switchdev_trans_item_{dequeue,enqueue} or switchdev_trans_item structure
in the kernel since commit 00fc0c51e3 ("rocker: Change world_ops API
and implementation to be switchdev independant").

Remove this unused code and update the documentation accordingly since.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-01 21:35:19 -08:00
Stefan Schmidt 8a42eda258 doc: net: ieee802154: remove old plain text docs after switching to rst
The plain text docs are converted to rst now, which allows us to remove
the old text file from the tree.

Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-01 17:03:00 -08:00
Stefan Schmidt 8e4a07405d doc: net: ieee802154: introduce IEEE 802.15.4 subsystem doc in rst style
Moving the ieee802154 docs from a plain text file into the new rst
style. This commit only does the minimal needed change to bring the
documentation over. Follow up patches will improve and extend on this.

Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-01 17:03:00 -08:00
Andrii Nakryiko 46604676c8 docs/bpf: minor casing/punctuation fixes
Fix few casing and punctuation glitches.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-03-02 00:40:04 +01:00
Magnus Karlsson 0f4a9b7d4e xsk: add FAQ to facilitate for first time users
Added an FAQ section in Documentation/networking/af_xdp.rst to help
first time users with common problems. As problems are getting
identified, entries will be added to the FAQ.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-25 23:21:42 +01:00
Russell King 0a6c33e894 doc: add phylink documentation to the networking book
Add some phylink documentation to the networking book detailing how
to convert network drivers from phylib to phylink.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-24 12:39:45 -08:00
David S. Miller 70f3522614 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three conflicts, one of which, for marvell10g.c is non-trivial and
requires some follow-up from Heiner or someone else.

The issue is that Heiner converted the marvell10g driver over to
use the generic c45 code as much as possible.

However, in 'net' a bug fix appeared which makes sure that a new
local mask (MDIO_AN_10GBT_CTRL_ADV_NBT_MASK) with value 0x01e0
is cleared.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-24 12:06:19 -08:00
Hauke Mehrtens 99407d8fa3 net: dsa: Remove documentation for port_fdb_prepare
This callback was removed some time ago, also remove the documentation.

Fixes: 1b6dd556c3 ("net: dsa: Remove prepare phase for FDB")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-23 18:38:00 -08:00
Florian Fainelli 80d79ad224 Documentation: networking: switchdev: Update port parent ID section
Update the section about switchdev drivers having to implement a
switchdev_port_attr_get() function to return
SWITCHDEV_ATTR_ID_PORT_PARENT_ID since that is no longer valid after
commit bccb30254a ("net: Get rid of
SWITCHDEV_ATTR_ID_PORT_PARENT_ID").

Fixes: bccb30254a ("net: Get rid of SWITCHDEV_ATTR_ID_PORT_PARENT_ID")
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-22 11:58:27 -08:00
Florian Fainelli 010c8f01aa net: Get rid of switchdev_port_attr_get()
With the bridge no longer calling switchdev_port_attr_get() to obtain
the supported bridge port flags from a driver but instead trying to set
the bridge port flags directly and relying on driver to reject
unsupported configurations, we can effectively get rid of
switchdev_port_attr_get() entirely since this was the only place where
it was called.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-21 14:55:14 -08:00
Florian Fainelli cc0c207a5d net: Remove SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT
Now that we have converted the bridge code and the drivers to check for
bridge port(s) flags at the time we try to set them, there is no need
for a get() -> set() sequence anymore and
SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT therefore becomes unused.

Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-21 14:55:14 -08:00
David S. Miller 375ca548f7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two easily resolvable overlapping change conflicts, one in
TCP and one in the eBPF verifier.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-20 00:34:07 -08:00
Petr Vorel 31a1b8d528 doc: Mention MSG_ZEROCOPY implementation for UDP
MSG_ZEROCOPY implementation for UDP was merged in v5.0,
6e360f7331 ("Merge branch 'udp-msg_zerocopy'").

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-17 15:30:02 -08:00
David S. Miller 3313da8188 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The netfilter conflicts were rather simple overlapping
changes.

However, the cls_tcindex.c stuff was a bit more complex.

On the 'net' side, Cong is fixing several races and memory
leaks.  Whilst on the 'net-next' side we have Vlad adding
the rtnl-ness support.

What I've decided to do, in order to resolve this, is revert the
conversion over to using a workqueue that Cong did, bringing us back
to pure RCU.  I did it this way because I believe that either Cong's
races don't apply with have Vlad did things, or Cong will have to
implement the race fix slightly differently.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-15 12:38:38 -08:00
Randy Dunlap bd37fdf524 Documentation: fix some freescale dpio-driver.rst warnings
Fix markup warnings for one list by using correct list syntax.
Fix markup warnings for another list by using blank lines before the
list.

Documentation/networking/device_drivers/freescale/dpaa2/dpio-driver.rst:30: WARNING: Unexpected indentation.
Documentation/networking/device_drivers/freescale/dpaa2/dpio-driver.rst:143: WARNING: Unexpected indentation.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Stuart Yoder <stuyoder@gmail.com>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Cc: netdev@vger.kernel.org
Cc: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-11 21:29:02 -08:00
Jakub Kicinski 14fd1901e7 devlink: add a generic board.manufacture version name
At Jiri's suggestion add a generic "board.manufacture"
version identifier.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-11 20:39:56 -08:00
Jouke Witteveen 989723b00b Documentation: bring operstate documentation up-to-date
Netlink has moved from bitmasks to group numbers long ago.

Signed-off-by: Jouke Witteveen <j.witteveen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-11 12:38:51 -08:00
yupeng 132c4e9e6a add snmp counter document
add document for tcp retransmission, tcp fast open, syn cookies,
challenge ack, prune and several general counters

Signed-off-by: yupeng <yupeng0921@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-09 19:00:25 -08:00
Jiri Pirko 98bbf70c1c mlxsw: spectrum: add "acl_region_rehash_interval" devlink param
Expose new driver-specific "acl_region_rehash_interval" devlink param
which would allow user to alter default ACL region rehash interval.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-08 15:02:50 -08:00
Aya Levin db2ab7a08f devlink: Add Documentation/networking/devlink-health.txt
This patch adds a new file to add information about devlink health
mechanism.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07 10:34:29 -08:00
David S. Miller e90b1fd83c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2019-02-07

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

The main changes are:

1) Add a riscv64 JIT for BPF, from Björn.

2) Implement BTF deduplication algorithm for libbpf which takes BTF type
   information containing duplicate per-compilation unit information and
   reduces it to an equivalent set of BTF types with no duplication and
   without loss of information, from Andrii.

3) Offloaded and native BPF XDP programs can coexist today, enable also
   offloaded and generic ones as well, from Jakub.

4) Expose various BTF related helper functions in libbpf as API which
   are in particular helpful for JITed programs, from Yonghong.

5) Fix the recently added JMP32 code emission in s390x JIT, from Heiko.

6) Fix BPF kselftests' tcp_{server,client}.py to be able to run inside
   a network namespace, also add a fix for libbpf to get libbpf_print()
   working, from Stanislav.

7) Fixes for bpftool documentation, from Prashant.

8) Type cleanup in BPF kselftests' test_maps.c to silence a gcc8 warning,
   from Breno.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-06 16:56:20 -08:00
Mike Rapoport facd86390b docs/networking: fix formatting of Intel drivers documentation
The documentation of Intel drivers is missing the heading adornment for
document titles.

This causes the generated html to have TOC entries from these documents to
appear as top level TOC entries:

* Linux* Base Driver for Intel(R) Ethernet Network Connection
* Contents
* Identifying Your Adapter
* Command Line Parameters
  * AutoNeg
  * Duplex
  ...

Add overline heading adornment to document titles.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2019-02-05 16:08:54 -08:00
Björn Töpel e8cb0167ae bpf, doc: add RISC-V JIT to BPF documentation
Update Documentation/networking/filter.txt and
Documentation/sysctl/net.txt to mention RISC-V.

Signed-off-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-05 16:56:10 +01:00
Linus Walleij 5468e82f70 net: phy: fixed-phy: Drop GPIO from fixed_phy_add()
All users of the fixed_phy_add() pass -1 as GPIO number
to the fixed phy driver, and all users of fixed_phy_register()
pass -1 as GPIO number as well, except for the device
tree MDIO bus.

Any new users should create a proper device and pass the
GPIO as a descriptor associated with the device so delete
the GPIO argument from the calls and drop the code looking
requesting a GPIO in fixed_phy_add().

In fixed phy_register(), investigate the "fixed-link"
node and pick the GPIO descriptor from "link-gpios" if
this property exists. Move the corresponding code out
of of_mdio.c as the fixed phy code anyways requires
OF to be in use.

Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-04 18:33:36 -08:00
Deepa Dinamani 9dd49211b8 socket: Update timestamping Documentation
With the new y2038 safe timestamping options added, update the
documentation to reflect the changes.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-03 11:17:31 -08:00
Jakub Kicinski 785bd550c4 devlink: add generic info version names
Add defines and docs for generic info versions.

v3:
 - add docs;
 - separate patch (Jiri).

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-01 15:30:30 -08:00
David S. Miller ec7146db15 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2019-01-29

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

The main changes are:

1) Teach verifier dead code removal, this also allows for optimizing /
   removing conditional branches around dead code and to shrink the
   resulting image. Code store constrained architectures like nfp would
   have hard time doing this at JIT level, from Jakub.

2) Add JMP32 instructions to BPF ISA in order to allow for optimizing
   code generation for 32-bit sub-registers. Evaluation shows that this
   can result in code reduction of ~5-20% compared to 64 bit-only code
   generation. Also add implementation for most JITs, from Jiong.

3) Add support for __int128 types in BTF which is also needed for
   vmlinux's BTF conversion to work, from Yonghong.

4) Add a new command to bpftool in order to dump a list of BPF-related
   parameters from the system or for a specific network device e.g. in
   terms of available prog/map types or helper functions, from Quentin.

5) Add AF_XDP sock_diag interface for querying sockets from user
   space which provides information about the RX/TX/fill/completion
   rings, umem, memory usage etc, from Björn.

6) Add skb context access for skb_shared_info->gso_segs field, from Eric.

7) Add support for testing flow dissector BPF programs by extending
   existing BPF_PROG_TEST_RUN infrastructure, from Stanislav.

8) Split BPF kselftest's test_verifier into various subgroups of tests
   in order better deal with merge conflicts in this area, from Jakub.

9) Add support for queue/stack manipulations in bpftool, from Stanislav.

10) Document BTF, from Yonghong.

11) Dump supported ELF section names in libbpf on program load
    failure, from Taeung.

12) Silence a false positive compiler warning in verifier's BTF
    handling, from Peter.

13) Fix help string in bpftool's feature probing, from Prashant.

14) Remove duplicate includes in BPF kselftests, from Yue.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-28 19:38:33 -08:00
Jiri Pirko 39c6b53cc0 Documentation: add devlink param file for mlxsw driver
Add initial documentation file for devlink params of mlxsw driver. Only
"fw_load_policy" is now supported.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-28 10:43:15 -08:00
Jiong Wang d405c7407a bpf: allocate 0x06 to new eBPF instruction class JMP32
The new eBPF instruction class JMP32 uses the reserved class number 0x6.
Kernel BPF ISA documentation updated accordingly.

Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-26 13:33:01 -08:00
Heiner Kallweit 25fe02d00a Documentation: net: phy: switch documentation to rst format
Switch phylib documentation to rst format.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-26 09:16:55 -08:00
Heiner Kallweit a118b19d91 Documentation: net: phy: reflect latest changes to phylib API
Recent changes to the phylib API
- removed phy_stop_interrupts
- replaced phy_start_interrupts with phy_request_interrupt
- moved some functionality from phy_connect() and phy_disconnect()
  to phy_start() and phy_stop() respectively.
Reflect these changes in the documentation.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-25 21:21:50 -08:00
David S. Miller 30e5c2c6bf net: Revert devlink health changes.
This reverts the devlink health changes from 9/17/2019,
Jiri wants things to be designed differently and it was
agreed that the easiest way to do this is start from the
beginning again.

Commits reverted:

cb5ccfbe73
880ee82f03
c7af343b4e
ff253fedab
6f9d56132e
fcd852c69d
8a66704a13
12bd0dcefe
aba25279c1
ce019faa70
b8c45a033a

And the follow-on build fix:

o33a0efa4baecd689da9474ce0e8b673eb6931c60

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-25 10:53:23 -08:00
David S. Miller fa7f3a8d56 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Completely minor snmp doc conflict.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-21 14:41:32 -08:00
Otto Sabart e6e37f6368 doc: networking: integrate scaling document into doc tree
Convert scaling document into reStructuredText and add reference to
scaling document into main table of contents in network documentation.

There are no semantic changes.

There are no references to "scaling.txt" file. Whole kernel tree was
checked using:
$ grep -r "scaling\.txt"

Signed-off-by: Otto Sabart <ottosabart@seberm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-01-20 19:10:49 -07:00
Aya Levin b8c45a033a devlink: Add Documentation/networking/devlink-health.txt
This patch adds a new file to add information about devlink health
mechanism.

Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 14:51:23 -08:00