02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
04 Aug, 2017
1 commit
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The FIB notification chain is currently soley used by IPv4 code.
However, we're going to introduce IPv6 FIB offload support, which
requires these notification as well.As explained in commit c3852ef7f2f8 ("ipv4: fib: Replay events when
registering FIB notifier"), upon registration to the chain, the callee
receives a full dump of the FIB tables and rules by traversing all the
net namespaces. The integrity of the dump is ensured by a per-namespace
sequence counter that is incremented whenever a change to the tables or
rules occurs.In order to allow more address families to use the chain, each family is
expected to register its fib_notifier_ops in its pernet init. These
operations allow the common code to read the family's sequence counter
as well as dump its tables and rules in the given net namespace.Additionally, a 'family' parameter is added to sent notifications, so
that listeners could distinguish between the different families.Implement the common code that allows listeners to register to the chain
and for address families to register their fib_notifier_ops. Subsequent
patches will implement these operations in IPv6.In the future, ipmr and ip6mr will be extended to provide these
notifications as well.Signed-off-by: Ido Schimmel
Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller
19 Jul, 2017
1 commit
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After rcu conversions performance degradation in forward tests isn't that
noticeable anymore.See next patch for some numbers.
A followup patcg could then also remove genid from the policies
as we do not cache bundles anymore.Signed-off-by: Florian Westphal
Signed-off-by: David S. Miller
09 Feb, 2017
1 commit
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We have many gro cells users, so lets move the code to avoid
duplication.This creates a CONFIG_GRO_CELLS option.
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
02 Dec, 2016
1 commit
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Registers new BPF program types which correspond to the LWT hooks:
- BPF_PROG_TYPE_LWT_IN => dst_input()
- BPF_PROG_TYPE_LWT_OUT => dst_output()
- BPF_PROG_TYPE_LWT_XMIT => lwtunnel_xmit()The separate program types are required to differentiate between the
capabilities each LWT hook allows:* Programs attached to dst_input() or dst_output() are restricted and
may only read the data of an skb. This prevent modification and
possible invalidation of already validated packet headers on receive
and the construction of illegal headers while the IP headers are
still being assembled.* Programs attached to lwtunnel_xmit() are allowed to modify packet
content as well as prepending an L2 header via a newly introduced
helper bpf_skb_change_head(). This is safe as lwtunnel_xmit() is
invoked after the IP header has been assembled completely.All BPF programs receive an skb with L3 headers attached and may return
one of the following error codes:BPF_OK - Continue routing as per nexthop
BPF_DROP - Drop skb and return EPERM
BPF_REDIRECT - Redirect skb to device as per redirect() helper.
(Only valid in lwtunnel_xmit() context)The return codes are binary compatible with their TC_ACT_
relatives to ease compatibility.Signed-off-by: Thomas Graf
Acked-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Signed-off-by: David S. Miller
15 Mar, 2016
1 commit
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This basic implementation allows to share code between driver using
hardware buffer management. As the code is hardware agnostic, there is
few helpers, most of the optimization brought by the an HW BM has to be
done at driver level.Tested-by: Sebastian Careba
Signed-off-by: Gregory CLEMENT
Signed-off-by: David S. Miller
02 Mar, 2016
1 commit
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Introduce devlink infrastructure for drivers to register and expose to
userspace via generic Netlink interface.There are two basic objects defined:
devlink - one instance for every "parent device", for example switch ASIC
devlink port - one instance for every physical port of the device.This initial portion implements basic get/dump of objects to userspace.
Also, port splitter and port type setting is implemented.Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller
17 Feb, 2016
1 commit
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This patch add a generic, lockless dst cache implementation.
The need for lock is avoided updating the dst cache fields
only in per cpu scope, and requiring that the cache manipulation
functions are invoked with the local bh disabled.The refresh_ts and reset_ts fields are used to ensure the cache
consistency in case of cuncurrent cache update (dst_cache_set*) and
reset operation (dst_cache_reset).Consider the following scenario:
CPU1: CPU2:
dst_cache_reset()
dst_cache_set()The dst entry set passed to dst_cache_set() should not be used
for later dst cache lookup, because it's obtained using old
configuration values.Since the refresh_ts is updated only on dst_cache lookup, the
cached value in the above scenario will be discarded on the next
lookup.Signed-off-by: Paolo Abeni
Suggested-and-acked-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller
05 Jan, 2016
1 commit
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struct sock_reuseport is an optional shared structure referenced by each
socket belonging to a reuseport group. When a socket is bound to an
address/port not yet in use and the reuseport flag has been set, the
structure will be allocated and attached to the newly bound socket.
When subsequent calls to bind are made for the same address/port, the
shared structure will be updated to include the new socket and the
newly bound socket will reference the group structure.Usually, when an incoming packet was destined for a reuseport group,
all sockets in the same group needed to be considered before a
dispatching decision was made. With this structure, an appropriate
socket can be found after looking up just one socket in the group.This shared structure will also allow for more complicated decisions to
be made when selecting a socket (eg a BPF filter).This work is based off a similar implementation written by
Ying Cai for implementing policy-based reuseport
selection.Signed-off-by: Craig Gallek
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
22 Jul, 2015
1 commit
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Provides infrastructure to parse/dump/store encap information for
light weight tunnels like mpls. Encap information for such tunnels
is associated with fib routes.This infrastructure is based on previous suggestions from
Eric Biederman to follow the xfrm infrastructure.Signed-off-by: Roopa Prabhu
Signed-off-by: David S. Miller
04 Feb, 2015
1 commit
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Signed-off-by: Al Viro
08 Oct, 2014
1 commit
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Pull dmaengine updates from Dan Williams:
"Even though this has fixes marked for -stable, given the size and the
needed conflict resolutions this is 3.18-rc1/merge-window material.These patches have been languishing in my tree for a long while. The
fact that I do not have the time to do proper/prompt maintenance of
this tree is a primary factor in the decision to step down as
dmaengine maintainer. That and the fact that the bulk of drivers/dma/
activity is going through Vinod these days.The net_dma removal has not been in -next. It has developed simple
conflicts against mainline and net-next (for-3.18).Continuing thanks to Vinod for staying on top of drivers/dma/.
Summary:
1/ Step down as dmaengine maintainer see commit 08223d80df38
"dmaengine maintainer update"2/ Removal of net_dma, as it has been marked 'broken' since 3.13
(commit 77873803363c "net_dma: mark broken"), without reports of
performance regression.3/ Miscellaneous fixes"
* tag 'dmaengine-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
net: make tcp_cleanup_rbuf private
net_dma: revert 'copied_early'
net_dma: simple removal
dmaengine maintainer update
dmatest: prevent memory leakage on error path in thread
ioat: Use time_before_jiffies()
dmaengine: fix xor sources continuation
dma: mv_xor: Rename __mv_xor_slot_cleanup() to mv_xor_slot_cleanup()
dma: mv_xor: Remove all callers of mv_xor_slot_cleanup()
dma: mv_xor: Remove unneeded mv_xor_clean_completed_slots() call
ioat: Use pci_enable_msix_exact() instead of pci_enable_msix()
drivers: dma: Include appropriate header file in dca.c
drivers: dma: Mark functions as static in dma_v3.c
dma: mv_xor: Add DMA API error checks
ioat/dca: Use dev_is_pci() to check whether it is pci device
28 Sep, 2014
1 commit
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Per commit "77873803363c net_dma: mark broken" net_dma is no longer used
and there is no plan to fix it.This is the mechanical removal of bits in CONFIG_NET_DMA ifdef guards.
Reverting the remainder of the net_dma induced changes is deferred to
subsequent patches.Marked for stable due to Roman's report of a memory leak in
dma_pin_iovec_pages():https://lkml.org/lkml/2014/9/3/177
Cc: Dave Jiang
Cc: Vinod Koul
Cc: David Whipple
Cc: Alexander Duyck
Cc:
Reported-by: Roman Gushchin
Acked-by: David S. Miller
Signed-off-by: Dan Williams
23 May, 2014
1 commit
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Although the implementation probably needs a lot of work, this initial API
allows to implement software TSO in mvneta and mv643xx_eth drivers in a not
so intrusive way.Signed-off-by: Ezequiel Garcia
Signed-off-by: David S. Miller
02 Apr, 2014
1 commit
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This commit fixes a build error reported by Fengguang, that is
triggered when CONFIG_NETWORK_PHY_TIMESTAMPING is not set:ERROR: "ptp_classify_raw" [drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.ko] undefined!
The fix is to introduce its own file for the PTP BPF classifier,
so that PTP_1588_CLOCK and/or NETWORK_PHY_TIMESTAMPING can select
it independently from each other. IXP4xx driver on ARM needs to
select it as well since it does not seem to select PTP_1588_CLOCK
or similar that would pull it in automatically.This also allows for hiding all of the internals of the BPF PTP
program inside that file, and only exporting relevant API bits
to drivers.This patch also adds a kdoc documentation of ptp_classify_raw()
API to make it clear that it can return PTP_CLASS_* defines. Also,
the BPF program has been translated into bpf_asm code, so that it
can be more easily read and altered (extensively documented in [1]).In the kernel tree under tools/net/ we have bpf_asm and bpf_dbg
tools, so the commented program can simply be translated via
`./bpf_asm -c prog` where prog is a file that contains the
commented code. This makes it easily readable/verifiable and when
there's a need to change something, jump offsets etc do not need
to be replaced manually which can be very error prone. Instead,
a newly translated version via bpf_asm can simply replace the old
code. I have checked opcode diffs before/after and it's the very
same filter.[1] Documentation/networking/filter.txt
Fixes: 164d8c666521 ("net: ptp: do not reimplement PTP/BPF classifier")
Reported-by: Fengguang Wu
Signed-off-by: Daniel Borkmann
Signed-off-by: Alexei Starovoitov
Cc: Richard Cochran
Cc: Jiri Benc
Acked-by: Richard Cochran
Signed-off-by: David S. Miller
04 Jan, 2014
2 commits
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While we're at it and introduced CGROUP_NET_CLASSID, lets also make
NETPRIO_CGROUP more consistent with the rest of cgroups and rename it
into CONFIG_CGROUP_NET_PRIO so that for networking, we now have
CONFIG_CGROUP_NET_{PRIO,CLASSID}. This not only makes the CONFIG
option consistent among networking cgroups, but also among cgroups
CONFIG conventions in general as the vast majority has a prefix of
CONFIG_CGROUP_.Signed-off-by: Daniel Borkmann
Cc: Zefan Li
Cc: cgroups@vger.kernel.org
Acked-by: Li Zefan
Signed-off-by: Pablo Neira Ayuso -
Zefan Li requested [1] to perform the following cleanup/refactoring:
- Split cgroupfs classid handling into net core to better express a
possible more generic use.- Disable module support for cgroupfs bits as the majority of other
cgroupfs subsystems do not have that, and seems to be not wished
from cgroup side. Zefan probably might want to follow-up for netprio
later on.- By this, code can be further reduced which previously took care of
functionality built when compiled as module.cgroupfs bits are being placed under net/core/netclassid_cgroup.c, so
that we are consistent with {netclassid,netprio}_cgroup naming that is
under net/core/ as suggested by Zefan.No change in functionality, but only code refactoring that is being
done here.[1] http://patchwork.ozlabs.org/patch/304825/
Suggested-by: Li Zefan
Signed-off-by: Daniel Borkmann
Cc: Zefan Li
Cc: Thomas Graf
Cc: cgroups@vger.kernel.org
Acked-by: Li Zefan
Signed-off-by: Pablo Neira Ayuso
19 Feb, 2013
2 commits
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Similar to net/core/net-sysfs.c, group procfs code to
a single unit.Cc: "David S. Miller"
Signed-off-by: Cong Wang
Signed-off-by: David S. Miller -
They well deserve a separated unit.
Cc: "David S. Miller"
Signed-off-by: Cong Wang
Signed-off-by: David S. Miller
07 Dec, 2011
1 commit
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This patch moves the sock_ code from inet_diag.c to generic sock_diag.c
file and provides necessary request_module-s calls and a pointer on
inet_diag_compat dumping routine.Signed-off-by: Pavel Emelyanov
Signed-off-by: David S. Miller
29 Nov, 2011
1 commit
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We use at least two flow dissectors in network stack, with known
limitations and code duplication.Introduce skb_flow_dissect() to factorize this, highly inspired from
existing dissector from __skb_get_rxhash()Note : We extensively use skb_header_pointer(), this permits us to not
touch skb at all.Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
23 Nov, 2011
1 commit
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This patch adds in the infrastructure code to create the network priority
cgroup. The cgroup, in addition to the standard processes file creates two
control files:1) prioidx - This is a read-only file that exports the index of this cgroup.
This is a value that is both arbitrary and unique to a cgroup in this subsystem,
and is used to index the per-device priority map2) priomap - This is a writeable file. On read it reports a table of 2-tuples
where name is the name of a network interface and priority is
indicates the priority assigned to frames egresessing on the named interface and
originating from a pid in this cgroupThis cgroup allows for skb priority to be set prior to a root qdisc getting
selected. This is benenficial for DCB enabled systems, in that it allows for any
application to use dcb configured priorities so without application modificationSigned-off-by: Neil Horman
Signed-off-by: John Fastabend
CC: Robert Love
CC: "David S. Miller"
Signed-off-by: David S. Miller
07 Aug, 2011
1 commit
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Computers have become a lot faster since we compromised on the
partial MD4 hash which we use currently for performance reasons.MD5 is a much safer choice, and is inline with both RFC1948 and
other ISS generators (OpenBSD, Solaris, etc.)Furthermore, only having 24-bits of the sequence number be truly
unpredictable is a very serious limitation. So the periodic
regeneration and 8-bit counter have been removed. We compute and
use a full 32-bit sequence number.For ipv6, DCCP was found to use a 32-bit truncated initial sequence
number (it needs 43-bits) and that is fixed here as well.Reported-by: Dan Kaminsky
Tested-by: Willy Tarreau
Signed-off-by: David S. Miller
19 Jul, 2010
1 commit
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This patch adds a new networking option to allow hardware time stamps
from PHY devices. When enabled, likely candidates among incoming and
outgoing network packets are offered to the PHY driver for possible
time stamping. When accepted by the PHY driver, incoming packets are
deferred for later delivery by the driver.The patch also adds phylib driver methods for the SIOCSHWTSTAMP ioctl
and callbacks for transmit and receive time stamping. Drivers may
optionally implement these functions.Signed-off-by: Richard Cochran
Signed-off-by: David S. Miller
04 Apr, 2010
2 commits
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Converts the list and the core manipulating with it to be the same as uc_list.
+uses two functions for adding/removing mc address (normal and "global"
variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
manipulation with lists on a sandbox (used in bonding and 80211 drivers)Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller -
+little renaming of unicast functions to be smooth with multicast ones
Signed-off-by: Jiri Pirko
Signed-off-by: David S. Miller
03 Dec, 2009
1 commit
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The two functions skb_dma_map/unmap are unsafe to use as they cause
problems when packets are cloned and sent to multiple devices while a HW
IOMMU is enabled. Due to this it is best to remove the code so it is not
used by any other network driver maintainters.Signed-off-by: Alexander Duyck
Signed-off-by: Jeff Kirsher
Signed-off-by: David S. Miller
14 Mar, 2009
2 commits
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Network Drop Monitor: Adding Build changes to enable drop monitor
Signed-off-by: Neil Horman
include/linux/Kbuild | 1 +
net/Kconfig | 11 +++++++++++
net/core/Makefile | 1 +
3 files changed, 13 insertions(+)
Signed-off-by: David S. Miller -
Signed-off-by: Neil Horman
include/trace/skb.h | 8 ++++++++
net/core/Makefile | 2 ++
net/core/net-traces.c | 29 +++++++++++++++++++++++++++++
3 files changed, 39 insertions(+)
Signed-off-by: David S. Miller
11 Sep, 2008
1 commit
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Signed-off-by: David S. Miller
11 Oct, 2007
2 commits
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When sysfs support is compiled out the kernel still keeps and maintains
the kobject tree. So it is not safe to skip our kobject reference counting or
to avoid becoming members of the kobject tree. It is safe to not add
the networking specific sysfs attributes.This patch removes the sysfs special cases from net/core/dev.c
renames functions from netdev_sysfs_xxxx to netdev_kobject_xxxx
and always compiles in net-sysfs.cnet-sysfs.c is modified with a CONFIG_SYSFS guard around the parts
that are actually sysfs specific.Signed-off-by: Eric W. Biederman
Signed-off-by: David S. Miller -
This is the basic infrastructure needed to support network
namespaces. This infrastructure is:
- Registration functions to support initializing per network
namespace data when a network namespaces is created or destroyed.- struct net. The network namespace data structure.
This structure will grow as variables are made per network
namespace but this is the minimal starting point.- Functions to grab a reference to the network namespace.
I provide both get/put functions that keep a network namespace
from being freed. And hold/release functions serve as weak references
and will warn if their count is not zero when the data structure
is freed. Useful for dealing with more complicated data structures
like the ipv4 route cache.- A list of all of the network namespaces so we can iterate over them.
- A slab for the network namespace data structure allowing leaks
to be spotted.Signed-off-by: Eric W. Biederman
Signed-off-by: David S. Miller
27 Apr, 2007
1 commit
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This patch moves dev/core/wireless.c to net/wireless/wext.c.
Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
Signed-off-by: David S. Miller
03 Dec, 2006
1 commit
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This patch contains the scheduled removal of the frame diverter.
Signed-off-by: Adrian Bunk
Signed-off-by: David S. Miller
23 Sep, 2006
1 commit
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Derived from net/ipv/fib_rules.c
Signed-off-by: Thomas Graf
Signed-off-by: David S. Miller
03 Aug, 2006
1 commit
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Generate netevents for:
- neighbour changes
- routing redirects
- pmtu changesSigned-off-by: Tom Tucker
Signed-off-by: Steve Wise
Signed-off-by: David S. Miller
18 Jun, 2006
1 commit
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Provides for pinning user space pages in memory, copying to iovecs,
and copying from sk_buffs including fragmented and chained sk_buffs.Signed-off-by: Chris Leech
Signed-off-by: David S. Miller
31 Jan, 2006
1 commit
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This patch contains the following changes:
- add a CONFIG_WIRELESS_EXT select'ed by NET_RADIO for conditional
code
- remove the now no longer required #ifdef CONFIG_NET_RADIO from some
#include'sBased on a patch by Jean Tourrilhes .
Signed-off-by: Adrian Bunk
Signed-off-by: John W. Linville
30 Aug, 2005
1 commit
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This patch doesn't introduce any code changes, but merely splits the
core netfilter code into four separate files. It also moves it from
it's old location in net/core/ to the recently-created net/netfilter/
directory.Signed-off-by: Harald Welte
Signed-off-by: David S. Miller
20 Jul, 2005
1 commit
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Signed-off-by: Patrick McHardy
Signed-off-by: David S. Miller
