Apply initial cilium-specific tweaks

Signed-off-by: Benjamin Leggett <[email protected]>

.clang-format

@@ -1,21 +1,31 @@
 # SPDX-License-Identifier: GPL-2.0
 #
-# clang-format configuration file. Intended for clang-format >= 11.
+# clang-format configuration file. Intended for clang-format >= 15.
 #
 # For more information, see:
 #
 #   Documentation/process/clang-format.rst
 #   https://clang.llvm.org/docs/ClangFormat.html
 #   https://clang.llvm.org/docs/ClangFormatStyleOptions.html
 #
+# Originally obtained from: https://github.com/torvalds/linux/blob/7acc1372113083fa281ba426021801e2402caca1/.clang-format
+# Settings here should be compatible with (current-release-major - 2) of clang-format
 ---
 AccessModifierOffset: -4
 AlignAfterOpenBracket: Align
+AlignConsecutiveBitFields:
+  Enabled: true
+  AcrossEmptyLines: true
+  AcrossComments: true
 AlignConsecutiveAssignments: false
 AlignConsecutiveDeclarations: false
+AlignConsecutiveMacros:
+  Enabled: true
+  AcrossEmptyLines: true
+  AcrossComments: true
 AlignEscapedNewlines: Left
 AlignOperands: true
-AlignTrailingComments: false
+AlignTrailingComments: true
 AllowAllParametersOfDeclarationOnNextLine: false
 AllowShortBlocksOnASingleLine: false
 AllowShortCaseLabelsOnASingleLine: false
@@ -63,6 +73,7 @@ DerivePointerAlignment: false
 DisableFormat: false
 ExperimentalAutoDetectBinPacking: false
 FixNamespaceComments: false
+
 IncludeBlocks: Preserve
 IncludeCategories:
   - Regex: '.*'
@@ -86,13 +97,18 @@ ObjCSpaceAfterProperty: true
 ObjCSpaceBeforeProtocolList: true
 
 # Taken from git's rules
+# This decides in what order (weighting) things
+# should be done if a line is too long
+# 100 = try everything else before this.
+# See https://stackoverflow.com/a/46749925
 PenaltyBreakAssignment: 10
-PenaltyBreakBeforeFirstCallParameter: 30
-PenaltyBreakComment: 10
+PenaltyBreakBeforeFirstCallParameter: 0
+PenaltyBreakComment: 0
 PenaltyBreakFirstLessLess: 0
 PenaltyBreakString: 10
+PenaltyBreakOpenParenthesis: 100
 PenaltyExcessCharacter: 100
-PenaltyReturnTypeOnItsOwnLine: 60
+PenaltyReturnTypeOnItsOwnLine: 100
 
 PointerAlignment: Right
 ReflowComments: false
@@ -102,8 +118,11 @@ SpaceAfterCStyleCast: false
 SpaceAfterTemplateKeyword: true
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeCtorInitializerColon: true
-SpaceBeforeInheritanceColon: true
-SpaceBeforeParens: ControlStatementsExceptForEachMacros
+# kernel.org sets this to true,
+# however this also seems to affect labels,
+# which seems like a bug.
+SpaceBeforeInheritanceColon: false
+SpaceBeforeParens: ControlStatements
 SpaceBeforeRangeBasedForLoopColon: true
 SpaceInEmptyParentheses: false
 SpacesBeforeTrailingComments: 1