linux-stable.git/tools/net, branch v7.2.6

xdrgen: Fix opaque and string encoders for unbounded members

2026-09-14T11:40:36+00:00

[ Upstream commit daa52e37851a5a1b5890e7a250a27e94a8b9f273 ]

The variable-length opaque and string encoder templates emit an
unconditional bound check, "if (value->NAME.len > MAXSIZE) return
false". XDR represents an unbounded specifier (opaque foo<>, string
foo<>) as a maxsize of 0, so for an unbounded member the check
degenerates to "len > 0" and the generated encoder refuses every
non-empty value.

The decoder does not share this defect. It delegates to
xdrgen_decode_opaque() and xdrgen_decode_string(), which treat a
maxlen of 0 as unbounded and skip the length check. The sibling
variable-length array templates already guard their bound check
with maxsize != "0".

Guard the bound check the same way in each affected template -- the
struct and pointer forms of both the opaque and string encoders --
so an unbounded member encodes a payload of any length while a
bounded member keeps its limit.

An explicit zero-length bound (foo<0>) parses to the same maxsize of
0 and so also skips the check; xdrgen does not distinguish it from
the unbounded form, matching the decoder and the array encoders.

Fixes: 4b132aacb076 ("tools: Add xdrgen")
Link: https://patch.msgid.link/20260712193122.116845-6-cel@kernel.org
Signed-off-by: Chuck Lever 
Signed-off-by: Sasha Levin

xdrgen: Do not declare union XDR functions in the definitions header

2026-09-14T11:40:36+00:00

[ Upstream commit d4ca0b0a6c62bc12407060754df11b23a90f3e57 ]

Unlike the struct, enum, typedef, and pointer templates, the union
definitions template also emits xdrgen_decode_*() and
xdrgen_encode_*() prototypes for a public union into that header.
Those prototypes name struct xdr_stream, which the definitions
header neither includes nor forward-declares, so any translation
unit that includes the definitions header without xdr.h already in
scope draws -Wvisibility warnings. The same public prototypes are
emitted into the declarations header, which does include
, making the definitions-header copies
redundant.

Drop the prototype emission from the union definitions template so
it matches the other type templates. Public unions keep their
encode and decode prototypes through the declarations header.

Fixes: 4b132aacb076 ("tools: Add xdrgen")
Link: https://patch.msgid.link/20260712193122.116845-4-cel@kernel.org
Signed-off-by: Chuck Lever 
Signed-off-by: Sasha Levin

xdrgen: Emit a blank line ahead of enum declarations

2026-09-14T11:40:35+00:00

[ Upstream commit ec5a7c2dceb09caf36262ecbd633eb7d4f9e4d3d ]

Clean up.

The declaration templates for structs, pointers, and typedefs each
begin with a blank line, which keeps successive declarations and the
include block above them visually separated. The enum declaration
template omits that blank line. trim_blocks collapses the template's
lone comment line to nothing, so the omission stayed invisible as
long as every generated header happened to lead with a non-enum
declaration.

Fixes: 4329010ad9c3 ("xdrgen: Address some checkpatch whitespace complaints")
Link: https://patch.msgid.link/20260712193122.116845-2-cel@kernel.org
Signed-off-by: Chuck Lever 
Signed-off-by: Sasha Levin

tools/ynl: add missing uapi header deps in Makefile.deps

2026-06-25T02:30:55+00:00

drm_ras includes drm/drm_ras.h, which is a relatively new header not yet
shipped in most distro kernel-header packages. Without the explicit
entry, the build might fail with a message like this:

  drm_ras-user.c:19:10: error: ‘DRM_RAS_CMD_CLEAR_ERROR_COUNTER’ \
   undeclared here (not in a function); did you mean \
  ‘DRM_RAS_CMD_GET_ERROR_COUNTER’

Signed-off-by: Thorsten Leemhuis 
Link: https://patch.msgid.link/20260623070818.2161810-1-linux@leemhuis.info
Signed-off-by: Jakub Kicinski

tools: ynl: build archives with $(AR)

2026-06-25T02:22:42+00:00

Use $(AR) to allow build system to override the archiver tool (e.g.,
when cross-compiling for a different architecture) by setting the AR
environment variable.

GNU Make defaults AR to ar, so this change will not break existing build
environments that do not explicitly set AR.

Fixes: 07c3cc51a085 ("tools: net: package libynl for use in selftests")
Fixes: 86878f14d71a ("tools: ynl: user space helpers")
Signed-off-by: Greg Thelen 
Link: https://patch.msgid.link/20260622161659.145047-1-gthelen@google.com
Signed-off-by: Jakub Kicinski

tools: ynl: try to avoid the very slow YAML loader

2026-06-04T22:36:12+00:00

Turns out Python YAML defaults to a pure Python loader for YAML
files which is a lot slower than the C loader (using libyaml).
Try to use the C one whenever possible.

The avg time to run:
  $ tools/net/ynl/pyynl/cli.py --family tc --no-schema
drops from 300+ ms to 115 ms with this change (40 samples).

We could drop the load time further to 85 ms if we "compiled"
the specs to JSON. Slightly tricky parts are that we don't
currently install the specs at all on make install, so it's
unclear where to put the conversion. Also JSON has questionable
support for comments and we need an SPDX line.

Reviewed-by: Jacob Keller 
Reviewed-by: Nicolai Buchwitz 
Reviewed-by: Donald Hunter 
Link: https://patch.msgid.link/20260603210810.2636193-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski

tools: ynl: add unicast notification receive support

2026-05-27T00:17:42+00:00

Add ntf_bind() method to YnlFamily for binding the netlink
socket without joining a multicast group. This enables receiving
unicast notifications through the existing poll_ntf/check_ntf
path.

The OVS packet family sends MISS and ACTION upcalls via
genlmsg_unicast() to a per-vport PID rather than through a
multicast group. The existing ntf_subscribe() couples bind()
with setsockopt(ADD_MEMBERSHIP), which does not fit the unicast
case. ntf_bind() provides the bind-only alternative, with the
address defaulting to (0, 0) but exposed as an explicit argument.

Signed-off-by: Minxi Hou 
Link: https://patch.msgid.link/20260522174154.720293-3-houminxi@gmail.com
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-05-21T22:09:02+00:00

Cross-merge networking fixes after downstream PR (net-7.1-rc5).

No conflicts, adjacent changes:

drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
  cc199cd1b912 ("net/mlx5e: Reduce branches in napi poll")
  c326f9c68921 ("net/mlx5e: xsk: Fix unlocked writing to ICOSQ")

drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
  c6df9a65cbb0 ("net/mlx5: Skip disabled vports when setting max TX speed")
  1fba57c91416 ("net/mlx5: Add VHCA_ID page management mode support")

net/mac80211/mlme.c
  a6e6ccd5bd07 ("wifi: mac80211: consume only present negotiated TTLM maps")
  49e62ec6eb06 ("wifi: mac80211: move frame RX handling to type files")

Signed-off-by: Jakub Kicinski

tools: ynl: support listening on all nsids

2026-05-21T15:23:50+00:00

A new method ntf_listen_all_nsid() to enable listening on events from
all namespaces.  Useful for testing cross-namespace functionality.

recv() replaced with recvmsg() to be able to receive NSID through the
ancillary data.

Signed-off-by: Ilya Maximets 
Link: https://patch.msgid.link/20260520172317.175168-4-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-05-14T17:08:06+00:00

Cross-merge networking fixes after downstream PR (net-7.1-rc4).

No conflicts, or adjacent changes.

Signed-off-by: Jakub Kicinski