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2019-04-17ipv4: set the tcp_min_rtt_wlen range from 0 to one dayZhangXiaoxu
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: f672258391b42 ("tcp: track min RTT using windowed min-filter") Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflict resolution of af_smc.c from Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12rxrpc: Make rxrpc_kernel_check_life() indicate if call completedMarc Dionne
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>
2019-04-12Documentation: net: dsa: transition to the rst formatIoana Ciornei
This patch also performs some minor adjustments such as numbering for the receive path sequence, conversion of keywords to inline literals and adding an index page so it looks better in the output of 'make htmldocs'. Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12xfrm: update doc about xfrm[46]_gc_threshNicolas Dichtel
Those entries are not used anymore. CC: Florian Westphal <fw@strlen.de> Fixes: 09c7570480f7 ("xfrm: remove flow cache") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2019-04-08Documentation: networking: devlink-info-versions: Add fw.psidShalom Toledo
Add firmware parameter id (fw.psid). Signed-off-by: Shalom Toledo <shalomt@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Minor comment merge conflict in mlx5. Staging driver has a fixup due to the skb->xmit_more changes in 'net-next', but was removed in 'net'. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-04flow_dissector: rst'ify documentationStanislav Fomichev
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: ae82899bbe92 ("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>
2019-04-03flow_dissector: document BPF flow dissector environmentStanislav Fomichev
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>
2019-03-28Merge tag 'batadv-next-for-davem-20190328' of ↵David S. Miller
git://git.open-mesh.org/linux-merge Simon Wunderlich says: ==================== This feature/cleanup patchset includes the following patches: - Drop license boilerplate (obsoleted by SPDX license IDs), by Sven Eckelmann - Drop documentation for sysfs and debugfs Documentation, by Sven Eckelmann (2 patches) - Mark sysfs as optional and deprecated, by Sven Eckelmann (3 patches) - Update MAINTAINERS Tree, Chat and Bugtracker, by Sven Eckelmann (3 patches) - Rename batadv_dat_send_data, by Sven Eckelmann - update DAT entries with incoming ARP replies, by Linus Luessing - add multicast-to-unicast support for limited destinations, by Linus Luessing ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2019-03-25batman-adv: Drop documentation about sysfs filesSven Eckelmann
The sysfs files will be marked as deprecated in the near future. They are already replaced by the batadv generic netlink family. The documentation should not advertise its usage anymore and instead promote the generic netlink family and a userspace tool to access it. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-03-25batman-adv: Drop documentation about debugfs filesSven Eckelmann
The debugfs files were marked as deprecated by commit 00caf6a2b318 ("batman-adv: Mark debugfs functionality as deprecated"). The documentation should not advertise its usage anymore and instead promote the generic netlink family and a userspace tool to access it. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-03-21ipv4: Allow amount of dirty memory from fib resizing to be controllableDavid Ahern
fib_trie implementation calls synchronize_rcu when a certain amount of pages are dirty from freed entries. The number of pages was determined experimentally in 2009 (commit c3059477fce2d). At the current setting, synchronize_rcu is called often -- 51 times in a second in one test with an average of an 8 msec delay adding a fib entry. The total impact is a lot of slow down modifying the fib. This is seen in the output of 'time' - the difference between real time and sys+user. For example, using 720,022 single path routes and 'ip -batch'[1]: $ time ./ip -batch ipv4/routes-1-hops real 0m14.214s user 0m2.513s sys 0m6.783s So roughly 35% of the actual time to install the routes is from the ip command getting scheduled out, most notably due to synchronize_rcu (this is observed using 'perf sched timehist'). This patch makes the amount of dirty memory configurable between 64k where the synchronize_rcu is called often (small, low end systems that are memory sensitive) to 64M where synchronize_rcu is called rarely during a large FIB change (for high end systems with lots of memory). The default is 512kB which corresponds to the current setting of 128 pages with a 4kB page size. As an example, at 16MB the worst interval shows 4 calls to synchronize_rcu in a second blocking for up to 30 msec in a single instance, and a total of almost 100 msec across the 4 calls in the second. The trade off is allowing FIB entries to consume more memory in a given time window but but with much better fib insertion rates (~30% increase in prefixes/sec). With this patch and net.ipv4.fib_sync_mem set to 16MB, the same batch file runs in: $ time ./ip -batch ipv4/routes-1-hops real 0m9.692s user 0m2.491s sys 0m6.769s So the dead time is reduced to about 1/2 second or <5% of the real time. [1] 'ip' modified to not request ACK messages which improves route insertion times by about 20% Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
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>
2019-03-20ipv6: Add icmp_echo_ignore_anycast for ICMPv6Stephen Suryaputra
In addition to icmp_echo_ignore_multicast, there is a need to also prevent responding to pings to anycast addresses for security. Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-19ipv6: Add icmp_echo_ignore_multicast support for ICMPv6Stephen Suryaputra
IPv4 has icmp_echo_ignore_broadcast to prevent responding to broadcast pings. IPv6 needs a similar mechanism. v1->v2: - Remove NET_IPV6_ICMP_ECHO_IGNORE_MULTICAST. Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-19netfilter: nf_flowtable: remove duplicated transition in diagramPablo Neira Ayuso
No direct transition from prerouting to forward hook, routing lookup needs to happen first. Fixes: 19b351f16fd9 ("netfilter: add flowtable documentation") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-03-18Documentation: networking: Update netdev-FAQ regarding patchesFlorian Fainelli
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>
2019-03-18doc: fix link to MSG_ZEROCOPY patchsetTobias Klauser
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>
2019-03-17networking: fix snmp_counter.rst Doc. WarningsRandy Dunlap
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: 80cc49507ba48 ("net: Add part of TCP counts explanations in snmp_counters.rst") Fixes: 8e2ea53a83dfb ("add snmp counters document") Fixes: a6c7c7aac2de6 ("net: add document for several snmp counters") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: yupeng <yupeng0921@gmail.com>
2019-03-09Merge tag 'docs-5.1' of git://git.lwn.net/linuxLinus Torvalds
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" ...
2019-03-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
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>
2019-03-01switchdev: Remove unused transaction item queueFlorian Fainelli
There are no more in tree users of the switchdev_trans_item_{dequeue,enqueue} or switchdev_trans_item structure in the kernel since commit 00fc0c51e35b ("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>
2019-03-01doc: net: ieee802154: remove old plain text docs after switching to rstStefan Schmidt
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>
2019-03-01doc: net: ieee802154: introduce IEEE 802.15.4 subsystem doc in rst styleStefan Schmidt
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>
2019-03-02docs/bpf: minor casing/punctuation fixesAndrii Nakryiko
Fix few casing and punctuation glitches. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-25xsk: add FAQ to facilitate for first time usersMagnus Karlsson
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>
2019-02-24doc: add phylink documentation to the networking bookRussell King
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>
2019-02-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
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>
2019-02-23net: dsa: Remove documentation for port_fdb_prepareHauke Mehrtens
This callback was removed some time ago, also remove the documentation. Fixes: 1b6dd556c304 ("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>
2019-02-22Documentation: networking: switchdev: Update port parent ID sectionFlorian Fainelli
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 bccb30254a4a ("net: Get rid of SWITCHDEV_ATTR_ID_PORT_PARENT_ID"). Fixes: bccb30254a4a ("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>
2019-02-21net: Get rid of switchdev_port_attr_get()Florian Fainelli
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>
2019-02-21net: Remove SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORTFlorian Fainelli
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>
2019-02-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Two easily resolvable overlapping change conflicts, one in TCP and one in the eBPF verifier. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-17doc: Mention MSG_ZEROCOPY implementation for UDPPetr Vorel
MSG_ZEROCOPY implementation for UDP was merged in v5.0, 6e360f733113 ("Merge branch 'udp-msg_zerocopy'"). Signed-off-by: Petr Vorel <pvorel@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
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>
2019-02-11Documentation: fix some freescale dpio-driver.rst warningsRandy Dunlap
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>
2019-02-11devlink: add a generic board.manufacture version nameJakub Kicinski
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>
2019-02-11Documentation: bring operstate documentation up-to-dateJouke Witteveen
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>
2019-02-09add snmp counter documentyupeng
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>
2019-02-08mlxsw: spectrum: add "acl_region_rehash_interval" devlink paramJiri Pirko
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>
2019-02-07devlink: Add Documentation/networking/devlink-health.txtAya Levin
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>
2019-02-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
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>
2019-02-05docs/networking: fix formatting of Intel drivers documentationMike Rapoport
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>
2019-02-05bpf, doc: add RISC-V JIT to BPF documentationBjörn Töpel
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>
2019-02-04net: phy: fixed-phy: Drop GPIO from fixed_phy_add()Linus Walleij
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>
2019-02-03socket: Update timestamping DocumentationDeepa Dinamani
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>
2019-02-01devlink: add generic info version namesJakub Kicinski
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>
2019-01-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
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>
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