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authorDapeng Mi <dapeng1.mi@linux.intel.com>2026-09-17 09:52:33 +0800
committerIngo Molnar <mingo@kernel.org>2026-09-22 11:37:46 +0200
commit0102c8c7fdfc4bd700971daff2b94470f4eafae4 (patch)
tree531306c2299f9a269f0a986e29f17ba972180104 /Documentation/networking/seg6-sysctl.rst
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perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rspgrafted
DMR introduces Offmodule Response events in place of the legacy Offcore Response events, but it still exposes the inherited offcore_rsp PMU attribute for programming the corresponding MSR data. Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface matches the underlying event name and avoids user & tooling confusion. Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com
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+.. 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.