From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise 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 Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- net/bridge/Kconfig | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 net/bridge/Kconfig (limited to 'net/bridge/Kconfig') diff --git a/net/bridge/Kconfig b/net/bridge/Kconfig new file mode 100644 index 000000000..318715c8f --- /dev/null +++ b/net/bridge/Kconfig @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# 802.1d Ethernet Bridging +# + +config BRIDGE + tristate "802.1d Ethernet Bridging" + select LLC + select STP + help + If you say Y here, then your Linux box will be able to act as an + Ethernet bridge, which means that the different Ethernet segments it + is connected to will appear as one Ethernet to the participants. + Several such bridges can work together to create even larger + networks of Ethernets using the IEEE 802.1 spanning tree algorithm. + As this is a standard, Linux bridges will cooperate properly with + other third party bridge products. + + In order to use the Ethernet bridge, you'll need the bridge + configuration tools; see + for location. Please read the Bridge mini-HOWTO for more + information. + + If you enable iptables support along with the bridge support then you + turn your bridge into a bridging IP firewall. + iptables will then see the IP packets being bridged, so you need to + take this into account when setting up your firewall rules. + Enabling arptables support when bridging will let arptables see + bridged ARP traffic in the arptables FORWARD chain. + + To compile this code as a module, choose M here: the module + will be called bridge. + + If unsure, say N. + +config BRIDGE_IGMP_SNOOPING + bool "IGMP/MLD snooping" + depends on BRIDGE + depends on INET + default y + help + If you say Y here, then the Ethernet bridge will be able selectively + forward multicast traffic based on IGMP/MLD traffic received from + each port. + + Say N to exclude this support and reduce the binary size. + + If unsure, say Y. + +config BRIDGE_VLAN_FILTERING + bool "VLAN filtering" + depends on BRIDGE + depends on VLAN_8021Q + default n + help + If you say Y here, then the Ethernet bridge will be able selectively + receive and forward traffic based on VLAN information in the packet + any VLAN information configured on the bridge port or bridge device. + + Say N to exclude this support and reduce the binary size. + + If unsure, say Y. + +config BRIDGE_MRP + bool "MRP protocol" + depends on BRIDGE + default n + help + If you say Y here, then the Ethernet bridge will be able to run MRP + protocol to detect loops + + Say N to exclude this support and reduce the binary size. + + If unsure, say N. + +config BRIDGE_CFM + bool "CFM protocol" + depends on BRIDGE + help + If you say Y here, then the Ethernet bridge will be able to run CFM + protocol according to 802.1Q section 12.14 + + Say N to exclude this support and reduce the binary size. + + If unsure, say N. -- cgit v1.3.1