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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /Documentation/networking/seg6-sysctl.rst | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'Documentation/networking/seg6-sysctl.rst')
| -rw-r--r-- | Documentation/networking/seg6-sysctl.rst | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/networking/seg6-sysctl.rst b/Documentation/networking/seg6-sysctl.rst new file mode 100644 index 000000000..1b6af4779 --- /dev/null +++ b/Documentation/networking/seg6-sysctl.rst @@ -0,0 +1,42 @@ +.. SPDX-License-Identifier: GPL-2.0 + +==================== +Seg6 Sysfs variables +==================== + + +/proc/sys/net/conf/<iface>/seg6_* variables: +============================================ + +seg6_enabled - BOOL + Accept or drop SR-enabled IPv6 packets on this interface. + + Relevant packets are those with SRH present and DA = local. + + * 0 - disabled (default) + * not 0 - enabled + +seg6_require_hmac - INTEGER + Define HMAC policy for ingress SR-enabled packets on this interface. + + * -1 - Ignore HMAC field + * 0 - Accept SR packets without HMAC, validate SR packets with HMAC + * 1 - Drop SR packets without HMAC, validate SR packets with HMAC + + Default is 0. + +/proc/sys/net/ipv6/seg6_* variables: +==================================== + +seg6_flowlabel - INTEGER + Controls the behaviour of computing the flowlabel of outer + IPv6 header in case of SR T.encaps + + == ======================================================= + -1 set flowlabel to zero. + 0 copy flowlabel from Inner packet in case of Inner IPv6 + (Set flowlabel to 0 in case IPv4/L2) + 1 Compute the flowlabel using seg6_make_flowlabel() + == ======================================================= + + Default is 0. |