- 06 5月, 2015 1 次提交
-
-
由 Bernhard Thaler 提交于
BR_GROUPFWD_RESTRICTED bitmask restricts users from setting values to /sys/class/net/brX/bridge/group_fwd_mask that allow forwarding of some IEEE 802.1D Table 7-10 Reserved addresses: (MAC Control) 802.3 01-80-C2-00-00-01 (Link Aggregation) 802.3 01-80-C2-00-00-02 802.1AB LLDP 01-80-C2-00-00-0E Change BR_GROUPFWD_RESTRICTED to allow to forward LLDP frames and document group_fwd_mask. e.g. echo 16384 > /sys/class/net/brX/bridge/group_fwd_mask allows to forward LLDP frames. This may be needed for bridge setups used for network troubleshooting or any other scenario where forwarding of LLDP frames is desired (e.g. bridge connecting a virtual machine to real switch transmitting LLDP frames that virtual machine needs to receive). Tested on a simple bridge setup with two interfaces and host transmitting LLDP frames on one side of this bridge (used lldpd). Setting group_fwd_mask as described above lets LLDP frames traverse bridge. Signed-off-by: NBernhard Thaler <bernhard.thaler@wvnet.at> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 19 3月, 2015 1 次提交
-
-
由 David Ahern 提交于
Similar to port id allow netdevices to specify port names and export the name via sysfs. Drivers can implement the netdevice operation to assist udev in having sane default names for the devices using the rule: $ cat /etc/udev/rules.d/80-net-setup-link.rules SUBSYSTEM=="net", ACTION=="add", ATTR{phys_port_name}!="", NAME="$attr{phys_port_name}" Use of phys_name versus phys_id was suggested-by Jiri Pirko. Signed-off-by: NDavid Ahern <dsahern@gmail.com> Acked-by: NJiri Pirko <jiri@resnulli.us> Acked-by: NScott Feldman <sfeldma@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 03 12月, 2014 1 次提交
-
-
由 Jiri Pirko 提交于
Signed-off-by: NJiri Pirko <jiri@resnulli.us> Reviewed-by: NThomas Graf <tgraf@suug.ch> Acked-by: NJohn Fastabend <john.r.fastabend@intel.com> Acked-by: NAndy Gospodarek <gospo@cumulusnetworks.com> Acked-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 26 8月, 2014 1 次提交
-
-
由 Junien Fridrick 提交于
Signed-off-by: NJunien Fridrick <linux.kernel@junien.fridrick.net> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
-
- 16 7月, 2014 1 次提交
-
-
由 Tom Gundersen 提交于
Based on a patch by David Herrmann. The name_assign_type attribute gives hints where the interface name of a given net-device comes from. These values are currently defined: NET_NAME_ENUM: The ifname is provided by the kernel with an enumerated suffix, typically based on order of discovery. Names may be reused and unpredictable. NET_NAME_PREDICTABLE: The ifname has been assigned by the kernel in a predictable way that is guaranteed to avoid reuse and always be the same for a given device. Examples include statically created devices like the loopback device and names deduced from hardware properties (including being given explicitly by the firmware). Names depending on the order of discovery, or in any other way on the existence of other devices, must not be marked as PREDICTABLE. NET_NAME_USER: The ifname was provided by user-space during net-device setup. NET_NAME_RENAMED: The net-device has been renamed from userspace. Once this type is set, it cannot change again. NET_NAME_UNKNOWN: This is an internal placeholder to indicate that we yet haven't yet categorized the name. It will not be exposed to userspace, rather -EINVAL is returned. The aim of these patches is to improve user-space renaming of interfaces. As a general rule, userspace must rename interfaces to guarantee that names stay the same every time a given piece of hardware appears (at boot, or when attaching it). However, there are several situations where userspace should not perform the renaming, and that depends on both the policy of the local admin, but crucially also on the nature of the current interface name. If an interface was created in repsonse to a userspace request, and userspace already provided a name, we most probably want to leave that name alone. The main instance of this is wifi-P2P devices created over nl80211, which currently have a long-standing bug where they are getting renamed by udev. We label such names NET_NAME_USER. If an interface, unbeknown to us, has already been renamed from userspace, we most probably want to leave also that alone. This will typically happen when third-party plugins (for instance to udev, but the interface is generic so could be from anywhere) renames the interface without informing udev about it. A typical situation is when you switch root from an installer or an initrd to the real system and the new instance of udev does not know what happened before the switch. These types of problems have caused repeated issues in the past. To solve this, once an interface has been renamed, its name is labelled NET_NAME_RENAMED. In many cases, the kernel is actually able to name interfaces in such a way that there is no need for userspace to rename them. This is the case when the enumeration order of devices, or in fact any other (non-parent) device on the system, can not influence the name of the interface. Examples include statically created devices, or any naming schemes based on hardware properties of the interface. In this case the admin may prefer to use the kernel-provided names, and to make that possible we label such names NET_NAME_PREDICTABLE. We want the kernel to have tho possibilty of performing predictable interface naming itself (and exposing to userspace that it has), as the information necessary for a proper naming scheme for a certain class of devices may not be exposed to userspace. The case where renaming is almost certainly desired, is when the kernel has given the interface a name using global device enumeration based on order of discovery (ethX, wlanY, etc). These naming schemes are labelled NET_NAME_ENUM. Lastly, a fallback is left as NET_NAME_UNKNOWN, to indicate that a driver has not yet been ported. This is mostly useful as a transitionary measure, allowing us to label the various naming schemes bit by bit. v8: minor documentation fixes v9: move comment to the right commit Signed-off-by: NTom Gundersen <teg@jklm.no> Reviewed-by: NDavid Herrmann <dh.herrmann@gmail.com> Reviewed-by: NKay Sievers <kay@vrfy.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 26 5月, 2014 1 次提交
-
-
由 Florian Fainelli 提交于
Add documentation for the phys_port_id sysfs attribute of a network device. Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 01 4月, 2014 1 次提交
-
-
由 Florian Fainelli 提交于
Add sysfs attributes Documentation entries for the basic set of attributes that are exposed by a network device in /sys/class/net/<iface>/ Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-