treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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netfilter: ebtables: Add string filter

This patch is part of a proposal to add a string filter to
ebtables, which would be similar to the string filter in
iptables. Like iptables, the ebtables filte

netfilter: ebtables: Add string filter

This patch is part of a proposal to add a string filter to
ebtables, which would be similar to the string filter in
iptables. Like iptables, the ebtables filter uses the xt_string
module.

Signed-off-by: Bernie Harris <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>

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xtables: extend matches and targets with .usersize

In matches and targets that define a kernel-only tail to their
xt_match and xt_target data structs, add a field .usersize that
specifies up to wher

xtables: extend matches and targets with .usersize

In matches and targets that define a kernel-only tail to their
xt_match and xt_target data structs, add a field .usersize that
specifies up to where data is to be shared with userspace.

Performed a search for comment "Used internally by the kernel" to find
relevant matches and targets. Manually inspected the structs to derive
a valid offsetof.

Signed-off-by: Willem de Bruijn <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>

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net: Remove state argument from skb_find_text()

Although it is clear that textsearch state is intentionally passed to
skb_find_text() as uninitialized argument, it was never used by the
callers. The

net: Remove state argument from skb_find_text()

Although it is clear that textsearch state is intentionally passed to
skb_find_text() as uninitialized argument, it was never used by the
callers. Therefore, we can simplify skb_find_text() by making it
local variable.

Signed-off-by: Bojan Prtvar <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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netfilter: xt_string: Remove unnecessary initialization of struct ts_state

The skb_find_text() accepts uninitialized textsearch state variable.

Signed-off-by: Bojan Prtvar <[email protected]>
Sign

netfilter: xt_string: Remove unnecessary initialization of struct ts_state

The skb_find_text() accepts uninitialized textsearch state variable.

Signed-off-by: Bojan Prtvar <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>

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netfilter: xtables: deconstify struct xt_action_param for matches

In future, layer-3 matches will be an xt module of their own, and
need to set the fragoff and thoff fields. Adding more pointers wou

netfilter: xtables: deconstify struct xt_action_param for matches

In future, layer-3 matches will be an xt module of their own, and
need to set the fragoff and thoff fields. Adding more pointers would
needlessy increase memory requirements (esp. so for 64-bit, where
pointers are wider).

Signed-off-by: Jan Engelhardt <[email protected]>

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netfilter: xtables: substitute temporary defines by final name

Signed-off-by: Jan Engelhardt <[email protected]>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when bu

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.

2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).

* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <[email protected]>
Guess-its-ok-by: Christoph Lameter <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Lee Schermerhorn <[email protected]>

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netfilter: xtables: remove xt_string revision 0

Superseded by xt_string revision 1 (linux v2.6.26-rc8-1127-g4ad3f26,
iptables 1.4.2-rc1).

Signed-off-by: Jan Engelhardt <[email protected]>

netfilter: xtables: slightly better error reporting

When extended status codes are available, such as ENOMEM on failed
allocations, or subsequent functions (e.g. nf_ct_get_l3proto), passing
them up

netfilter: xtables: slightly better error reporting

When extended status codes are available, such as ENOMEM on failed
allocations, or subsequent functions (e.g. nf_ct_get_l3proto), passing
them up to userspace seems like a good idea compared to just always
EINVAL.

Signed-off-by: Jan Engelhardt <[email protected]>

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netfilter: xtables: change matches to return error code

The following semantic patch does part of the transformation:
// <smpl>
@ rule1 @
struct xt_match ops;
identifier check;
@@
ops.checkentry =

netfilter: xtables: change matches to return error code

The following semantic patch does part of the transformation:
// <smpl>
@ rule1 @
struct xt_match ops;
identifier check;
@@
ops.checkentry = check;

@@
identifier rule1.check;
@@
check(...) { <...
-return true;
+return 0;
...> }

@@
identifier rule1.check;
@@
check(...) { <...
-return false;
+return -EINVAL;
...> }
// </smpl>

Signed-off-by: Jan Engelhardt <[email protected]>

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netfilter: xtables: change xt_match.checkentry return type

Restore function signatures from bool to int so that we can report
memory allocation failures or similar using -ENOMEM rather than
always h

netfilter: xtables: change xt_match.checkentry return type

Restore function signatures from bool to int so that we can report
memory allocation failures or similar using -ENOMEM rather than
always having to pass -EINVAL back.

This semantic patch may not be too precise (checking for functions
that use xt_mtchk_param rather than functions referenced by
xt_match.checkentry), but reviewed, it produced the intended result.

// <smpl>
@@
type bool;
identifier check, par;
@@
-bool check
+int check
(struct xt_mtchk_param *par) { ... }
// </smpl>

Signed-off-by: Jan Engelhardt <[email protected]>

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netfilter: xtables: move extension arguments into compound structure (3/6)

This patch does this for match extensions' destroy functions.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-of

netfilter: xtables: move extension arguments into compound structure (3/6)

This patch does this for match extensions' destroy functions.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>

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netfilter: xtables: move extension arguments into compound structure (2/6)

This patch does this for match extensions' checkentry functions.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed

netfilter: xtables: move extension arguments into compound structure (2/6)

This patch does this for match extensions' checkentry functions.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>

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netfilter: xtables: move extension arguments into compound structure (1/6)

The function signatures for Xtables extensions have grown over time.
It involves a lot of typing/replication, and also a bi

netfilter: xtables: move extension arguments into compound structure (1/6)

The function signatures for Xtables extensions have grown over time.
It involves a lot of typing/replication, and also a bit of stack space
even if they are not used. Realize an NFWS2008 idea and pack them into
structs. The skb remains outside of the struct so gcc can continue to
apply its optimizations.

This patch does this for match extensions' match functions.

A few ambiguities have also been addressed. The "offset" parameter for
example has been renamed to "fragoff" (there are so many different
offsets already) and "protoff" to "thoff" (there is more than just one
protocol here, so clarify).

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>

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netfilter: implement NFPROTO_UNSPEC as a wildcard for extensions

When a match or target is looked up using xt_find_{match,target},
Xtables will also search the NFPROTO_UNSPEC module list. This allow

netfilter: implement NFPROTO_UNSPEC as a wildcard for extensions

When a match or target is looked up using xt_find_{match,target},
Xtables will also search the NFPROTO_UNSPEC module list. This allows
for protocol-independent extensions (like xt_time) to be reused from
other components (e.g. arptables, ebtables).

Extensions that take different codepaths depending on match->family
or target->family of course cannot use NFPROTO_UNSPEC within the
registration structure (e.g. xt_pkttype).

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>

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netfilter: x_tables: use NFPROTO_* in extensions

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>

netfilter: fix string extension for case insensitive pattern matching

The flag XT_STRING_FLAG_IGNORECASE indicates case insensitive string
matching. netfilter can find cmd.exe, Cmd.exe, cMd.exe and

netfilter: fix string extension for case insensitive pattern matching

The flag XT_STRING_FLAG_IGNORECASE indicates case insensitive string
matching. netfilter can find cmd.exe, Cmd.exe, cMd.exe and etc easily.

A new revision 1 was added, in the meantime invert of xt_string_info
was moved into flags as a flag. If revision is 1, The flag
XT_STRING_FLAG_INVERT indicates invert matching.

Signed-off-by: Joonwoo Park <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: Update modules' descriptions

Updates the MODULE_DESCRIPTION() tags for all Netfilter modules,
actually describing what the module does and not just
"netfilter XYZ target".

Signed-off-b

[NETFILTER]: Update modules' descriptions

Updates the MODULE_DESCRIPTION() tags for all Netfilter modules,
actually describing what the module does and not just
"netfilter XYZ target".

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: Parenthesize macro parameters

Parenthesize macro parameters.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: Dav

[NETFILTER]: Parenthesize macro parameters

Parenthesize macro parameters.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: x_tables: consistent and unique symbol names

Give all Netfilter modules consistent and unique symbol names.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patri

[NETFILTER]: x_tables: consistent and unique symbol names

Give all Netfilter modules consistent and unique symbol names.

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: x_tables: mark matches and targets __read_mostly

Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

[NETFILTER]: x_tables: switch xt_match->checkentry to bool

Switch the return type of match functions to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <kaber@

[NETFILTER]: x_tables: switch xt_match->checkentry to bool

Switch the return type of match functions to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: x_tables: switch xt_match->match to bool

Switch the return type of match functions to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <kaber@trash

[NETFILTER]: x_tables: switch xt_match->match to bool

Switch the return type of match functions to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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[NETFILTER]: x_tables: switch hotdrop to bool

Switch the "hotdrop" variables to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by

[NETFILTER]: x_tables: switch hotdrop to bool

Switch the "hotdrop" variables to boolean

Signed-off-by: Jan Engelhardt <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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