mbox series

[libnftnl,0/4] Support wildcard netdev hooks and events

Message ID 20241002191941.8410-1-phil@nwl.cc
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Series Support wildcard netdev hooks and events | expand

Message

Phil Sutter Oct. 2, 2024, 7:19 p.m. UTC 
This series is the first step of enabling support for name-based and
wildcard interface hooks in user space. A following series for nftables
depends on this one.

Patch 1 is fallout, noticed when checking for minimal #include
statements in a new source file.

Patch 2 introduces helpers to convert wildcards from user representation
("eth*") to kernel ("eth" len 3) and back. Note that nftables does not
use the serialization part of this since it needs the offsets for
location information.

Patch 3 introduces a helper I wrote for the code in patch 4, but puts it
into a common spot for use in many source files.

Patch 4 finally implements deserialization for NFT_MSG_(NEW|DEL)DEV
payloads. This is a bit of pointless overhead since nftables will use it
in monitor code only, but I didn't want to bypass the standard
integration entirely and fiddle with libmnl in there directly.

Phil Sutter (4):
  include: utils.h needs errno.h
  utils: Add helpers for interface name wildcards
  utils: Introduce nftnl_parse_str_attr()
  device: Introduce nftnl_device

 include/libnftnl/Makefile.am        |   1 +
 include/libnftnl/device.h           |  39 +++++++
 include/linux/netfilter/nf_tables.h |   8 ++
 include/utils.h                     |   8 ++
 src/Makefile.am                     |   1 +
 src/chain.c                         |  49 ++++-----
 src/device.c                        | 153 ++++++++++++++++++++++++++++
 src/expr/dynset.c                   |  12 +--
 src/expr/flow_offload.c             |  12 +--
 src/expr/log.c                      |  13 +--
 src/expr/lookup.c                   |  12 +--
 src/expr/objref.c                   |  18 ++--
 src/flowtable.c                     |  34 +++----
 src/libnftnl.map                    |  10 ++
 src/object.c                        |  14 ++-
 src/rule.c                          |  22 ++--
 src/set.c                           |  22 ++--
 src/set_elem.c                      |  38 +++----
 src/table.c                         |  11 +-
 src/trace.c                         |  28 ++---
 src/utils.c                         |  45 ++++++++
 21 files changed, 369 insertions(+), 181 deletions(-)
 create mode 100644 include/libnftnl/device.h
 create mode 100644 src/device.c