mptcpd 0.1a: Initial alpha release.

This is the initial (alpha) release of the Multipath TCP Daemon
"mptcpd".  It implements MPTCP path management in the user space by
providing a framework that bridges user defined path management
strategies - i.e. mptcpd plugins - with the Linux kernel side MPTCP
implementation over a generic netlink interface.

The generic netlink interface employed by the Multipath TCP Daemon is
based on an early proposal, and will be superseded by the interface
available in the MPTCP development kernel, i.e.:
            multipath-tcp/mptcp@4ea5dee

In addition to the kernel/user space path management bridging, the
Multipath TCP Daemon also monitors changes to local network interfaces
and addresses that path management strategies may choose to leverage.
Currently, network interfaces and addresses may be queried (pulled).
A network event notification mechanism for plugins is currently a
work-in-progress.

A single-subflow-per-interface - "sspi" - plugin is included in the
source distribution as a reference.   It enforces a single subflow per
network interface per MPTCP connection policy.  Available local
addresses are also sent to the kernel so that they may be advertised
to the peer through a MPTCP ADD_ADDR option.  The current
implementation depends on the remote peer to initiate subflows, which
may then be allowed or closed per this plugin's policy.  Explicitly
adding new subflows through this plugin is currently unsupported, but
is expected to be implemented in the future.

.clang-format

@@ -0,0 +1,111 @@
+Language:        Cpp
+# BasedOnStyle:  LLVM
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: true
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Right
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: false
+BinPackArguments: false
+BinPackParameters: false
+BraceWrapping:
+  AfterClass:      true
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   true
+  AfterNamespace:  true
+  AfterObjCDeclaration: false
+  AfterStruct:     true
+  AfterUnion:      true
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeBraces: Custom
+BreakBeforeInheritanceComma: false
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeComma
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     74
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 8
+ContinuationIndentWidth: 8
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeBlocks:   Preserve
+IncludeCategories:
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+  - Regex:           '.*'
+    Priority:        1
+IncludeIsMainRegex: '(Test)?$'
+IndentCaseLabels: false
+#IndentPPDirectives: AfterHash
+IndentWidth:     8
+IndentWrappedFunctionNames: false
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: All
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+RawStringFormats:
+  - Delimiter:       pb
+    Language:        TextProto
+    BasedOnStyle:    google
+ReflowComments:  true
+SortIncludes:    false
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: true
+SpaceAfterTemplateKeyword: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Auto
+TabWidth:        8
+UseTab:          Never

.gitignore

@@ -0,0 +1,50 @@
+*.o
+*.lo
+*.la
+*.so*
+*.a
+*~
+*#*#
+.#*
+*.gcda
+*.gcno
+*-coverage*
+aminclude_static.am
+config.log
+config.status
+Makefile
+Makefile.in
+.deps
+INSTALL
+missing
+aclocal.m4
+ar-lib
+autom4te.cache/
+compile
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+.libs
+stamp*
+config.*
+config-private.h*
+mptcpd-*/
+*.tar.*
+core*
+etc/*.conf
+src/mptcpd
+src/mptcp.service
+man/mptcpd.8
+test-driver
+tests/test-network-monitor
+tests/test-plugin
+tests/test-path-manager
+tests/test-commands
+tests/test-configuration
+tests/test-cxx-build
+tests/*.log
+tests/*.trs
+tests/test-suite.log
+README

AUTHORS

@@ -0,0 +1 @@
+Ossama Othman <[email protected]>

COPYING

@@ -0,0 +1,12 @@
+The Multipath TCP Daemon program and library sources are licensed
+under the 3-Clause BSD License.  The full terms of the license are
+available under:
+
+	  LICENSES/COPYING.BSD
+
+The `include/linux/mptcp_genl.h' header file is licensed under the GPL
+2.0 license with the Linux system call exception.  Full terms are
+available under:
+
+	  LICENSES/COPYING.GPL
+	  LICENSES/Linux-syscall-note

ChangeLog

@@ -0,0 +1,2 @@
+See the NEWS files for change descriptions at a high level, and the git
+log for low level descriptions.