.RB "[ " numrxqueues
.IR QUEUE_COUNT " ]"
.br
+.BR "[ " gso_max_size
+.IR BYTES " ]"
+.RB "[ " gso_max_segs
+.IR SEGMENTS " ]"
+.br
.BI type " TYPE"
.RI "[ " ARGS " ]"
.RB "[ " port_guid " eui64 ] ]"
.br
.in -9
+.RB "[ { " xdp " | " xdpgeneric " | " xdpdrv " | " xdpoffload " } { " off " | "
+.br
+.in +8
+.BR object
+.IR FILE
+.RB "[ " section
+.IR NAME " ]"
+.RB "[ " verbose " ] |"
+.br
+.BR pinned
+.IR FILE " } ]"
+.br
+.in -8
.RB "[ " master
.IR DEVICE " ]"
.br
.B master
.IR DEVICE " ] ["
.B type
-.IR ETYPE " ]"
+.IR ETYPE " ] ["
.B vrf
.IR NAME " ]"
+.ti -8
+.B ip link xstats
+.BI type " TYPE"
+.RI "[ " ARGS " ]"
+
+.ti -8
+.B ip link afstats
+.RB "[ " dev
+.IR DEVICE " ]"
+
.ti -8
.B ip link help
.RI "[ " TYPE " ]"
.BR macvlan " | "
.BR macvtap " | "
.BR vcan " | "
+.BR vxcan " | "
.BR veth " | "
.BR vlan " | "
.BR vxlan " |"
.BR sit " |"
.BR gre " |"
.BR gretap " |"
+.BR erspan " |"
.BR ip6gre " |"
.BR ip6gretap " |"
+.BR ip6erspan " |"
.BR vti " |"
.BR nlmon " |"
.BR ipvlan " |"
.BR lowpan " |"
.BR geneve " |"
.BR vrf " |"
-.BR macsec " ]"
+.BR macsec " |"
+.BR netdevsim " ]"
.ti -8
.IR ETYPE " := [ " TYPE " |"
.sp
.B bond
- Bonding device
-.B can
-- Controller Area Network interface
.sp
.B dummy
- Dummy network interface
.B vcan
- Virtual Controller Area Network interface
.sp
+.B vxcan
+- Virtual Controller Area Network tunnel interface
+.sp
.B veth
- Virtual ethernet interface
.sp
.BR gretap
- Virtual L2 tunnel interface GRE over IPv4
.sp
+.BR erspan
+- Encapsulated Remote SPAN over GRE and IPv4
+.sp
.BR ip6gre
- Virtual tunnel interface GRE over IPv6
.sp
.BR ip6gretap
- Virtual L2 tunnel interface GRE over IPv6
.sp
+.BR ip6erspan
+- Encapsulated Remote SPAN over GRE and IPv6
+.sp
.BR vti
- Virtual tunnel interface
.sp
.sp
.BR vrf
- Interface for L3 VRF domains
+.sp
+.BR netdevsim
+- Interface for netdev API tests
.in -8
.TP
.BI numrxqueues " QUEUE_COUNT "
specifies the number of receive queues for new device.
+.TP
+.BI gso_max_size " BYTES "
+specifies the recommended maximum size of a Generic Segment Offload packet the new device should accept.
+
+.TP
+.BI gso_max_segs " SEGMENTS "
+specifies the recommended maximum number of a Generic Segment Offload segments the new device should accept.
+
.TP
.BI index " IDX "
specifies the desired index of the new virtual device. The link creation fails, if the index is busy.
.in -8
.TP
-GRE, IPIP, SIT Type Support
+VETH, VXCAN Type Support
For a link of types
-.I GRE/IPIP/SIT
+.I VETH/VXCAN
the following additional arguments are supported:
.BI "ip link add " DEVICE
-.BR type " { " gre " | " ipip " | " sit " }"
+.BR type " { " veth " | " vxcan " }"
+[
+.BR peer
+.BI "name " NAME
+]
+
+.in +8
+.sp
+.BR peer
+.BI "name " NAME
+- specifies the virtual pair device name of the
+.I VETH/VXCAN
+tunnel.
+
+.in -8
+
+.TP
+IPIP, SIT Type Support
+For a link of type
+.IR IPIP or SIT
+the following additional arguments are supported:
+
+.BI "ip link add " DEVICE
+.BR type " { " ipip " | " sit " }"
.BI " remote " ADDR " local " ADDR
[
.BR encap " { " fou " | " gue " | " none " }"
] [
.RB [ no ] encap-csum
] [
+.I " [no]encap-remcsum "
+] [
+.I " mode " { ip6ip | ipip | mplsip | any } "
+] [
+.BR external
+]
+
+.in +8
+.sp
+.BI remote " ADDR "
+- specifies the remote address of the tunnel.
+
+.sp
+.BI local " ADDR "
+- specifies the fixed local address for tunneled packets.
+It must be an address on another interface on this host.
+
+.sp
+.BR encap " { " fou " | " gue " | " none " }"
+- specifies type of secondary UDP encapsulation. "fou" indicates
+Foo-Over-UDP, "gue" indicates Generic UDP Encapsulation.
+
+.sp
+.BR encap-sport " { " \fIPORT " | " auto " }"
+- specifies the source port in UDP encapsulation.
+.IR PORT
+indicates the port by number, "auto"
+indicates that the port number should be chosen automatically
+(the kernel picks a flow based on the flow hash of the
+encapsulated packet).
+
+.sp
+.RB [ no ] encap-csum
+- specifies if UDP checksums are enabled in the secondary
+encapsulation.
+
+.sp
.RB [ no ] encap-remcsum
+- specifies if Remote Checksum Offload is enabled. This is only
+applicable for Generic UDP Encapsulation.
+
+.sp
+.BI mode " { ip6ip | ipip | mplsip | any } "
+- specifies mode in which device should run. "ip6ip" indicates
+IPv6-Over-IPv4, "ipip" indicates "IPv4-Over-IPv4", "mplsip" indicates
+MPLS-Over-IPv4, "any" indicates IPv6, IPv4 or MPLS Over IPv4. Supported for
+SIT where the default is "ip6ip" and IPIP where the default is "ipip".
+IPv6-Over-IPv4 is not supported for IPIP.
+
+.sp
+.BR external
+- make this tunnel externally controlled
+.RB "(e.g. " "ip route encap" ).
+
+.in -8
+.TP
+GRE Type Support
+For a link of type
+.IR GRE " or " GRETAP
+the following additional arguments are supported:
+
+.BI "ip link add " DEVICE
+.BR type " { " gre " | " gretap " }"
+.BI " remote " ADDR " local " ADDR
+[
+.RB [ no ] "" [ i | o ] seq
+] [
+.RB [ i | o ] key
+.I KEY
+|
+.BR no [ i | o ] key
+] [
+.RB [ no ] "" [ i | o ] csum
+] [
+.BI ttl " TTL "
+] [
+.BI tos " TOS "
+] [
+.RB [ no ] pmtudisc
+] [
+.RB [ no ] ignore-df
+] [
+.BI dev " PHYS_DEV "
+] [
+.BR encap " { " fou " | " gue " | " none " }"
+] [
+.BR encap-sport " { " \fIPORT " | " auto " }"
+] [
+.BI "encap-dport " PORT
+] [
+.RB [ no ] encap-csum
+] [
+.RB [ no ] encap-remcsum
+] [
+.BR external
]
.in +8
- specifies the fixed local address for tunneled packets.
It must be an address on another interface on this host.
+.sp
+.RB [ no ] "" [ i | o ] seq
+- serialize packets.
+The
+.B oseq
+flag enables sequencing of outgoing packets.
+The
+.B iseq
+flag requires that all input packets are serialized.
+
+.sp
+.RB [ i | o ] key
+.I KEY
+|
+.BR no [ i | o ] key
+- use keyed GRE with key
+.IR KEY ". "KEY
+is either a number or an IPv4 address-like dotted quad.
+The
+.B key
+parameter specifies the same key to use in both directions.
+The
+.BR ikey " and " okey
+parameters specify different keys for input and output.
+
+.sp
+.RB [ no ] "" [ i | o ] csum
+- generate/require checksums for tunneled packets.
+The
+.B ocsum
+flag calculates checksums for outgoing packets.
+The
+.B icsum
+flag requires that all input packets have the correct
+checksum. The
+.B csum
+flag is equivalent to the combination
+.B "icsum ocsum" .
+
+.sp
+.BI ttl " TTL"
+- specifies the TTL value to use in outgoing packets.
+
+.sp
+.BI tos " TOS"
+- specifies the TOS value to use in outgoing packets.
+
+.sp
+.RB [ no ] pmtudisc
+- enables/disables Path MTU Discovery on this tunnel.
+It is enabled by default. Note that a fixed ttl is incompatible
+with this option: tunneling with a fixed ttl always makes pmtu
+discovery.
+
+.sp
+.RB [ no ] ignore-df
+- enables/disables IPv4 DF suppression on this tunnel.
+Normally datagrams that exceed the MTU will be fragmented; the presence
+of the DF flag inhibits this, resulting instead in an ICMP Unreachable
+(Fragmentation Required) message. Enabling this attribute casues the
+DF flag to be ignored.
+
+.sp
+.BI dev " PHYS_DEV"
+- specifies the physical device to use for tunnel endpoint communication.
+
.sp
.BR encap " { " fou " | " gue " | " none " }"
- specifies type of secondary UDP encapsulation. "fou" indicates
- specifies if Remote Checksum Offload is enabled. This is only
applicable for Generic UDP Encapsulation.
+.sp
+.BR external
+- make this tunnel externally controlled
+.RB "(e.g. " "ip route encap" ).
+
.in -8
.TP
.BR type " { " ip6gre " | " ip6gretap " }"
.BI remote " ADDR " local " ADDR"
[
-.RB [ i | o ] seq
+.RB [ no ] "" [ i | o ] seq
] [
.RB [ i | o ] key
.I KEY
+|
+.BR no [ i | o ] key
] [
-.RB [ i | o ] csum
+.RB [ no ] "" [ i | o ] csum
] [
.BI hoplimit " TTL "
] [
] [
.BI "dscp inherit"
] [
+.BI "[no]allow-localremote"
+] [
.BI dev " PHYS_DEV "
+] [
+.RB external
]
.in +8
It must be an address on another interface on this host.
.sp
-.RB [ i | o ] seq
+.RB [ no ] "" [ i | o ] seq
- serialize packets.
The
.B oseq
flag requires that all input packets are serialized.
.sp
-.RB [ i | o ] key " \fIKEY"
+.RB [ i | o ] key
+.I KEY
+|
+.BR no [ i | o ] key
- use keyed GRE with key
.IR KEY ". "KEY
is either a number or an IPv4 address-like dotted quad.
parameters specify different keys for input and output.
.sp
-.RB [ i | o ] csum
+.RB [ no ] "" [ i | o ] csum
- generate/require checksums for tunneled packets.
The
.B ocsum
.BI flowlabel " FLOWLABEL"
- specifies a fixed flowlabel.
+.sp
+.BI [no]allow-localremote
+- specifies whether to allow remote endpoint to have an address configured on
+local host.
+
.sp
.BI tclass " TCLASS"
- specifies the traffic class field on
.IR 00 ".." ff
when tunneling non-IP packets. The default value is 00.
+.sp
+.RB external
+- make this tunnel externally controlled (or not, which is the default).
+In the kernel, this is referred to as collect metadata mode. This flag is
+mutually exclusive with the
+.BR remote ,
+.BR local ,
+.BR seq ,
+.BR key,
+.BR csum,
+.BR hoplimit,
+.BR encaplimit,
+.BR flowlabel " and " tclass
+options.
+
.in -8
.TP
.BI mode " MODE "
- specifies the mode (datagram or connected) to use.
+.TP
+ERSPAN Type Support
+For a link of type
+.I ERSPAN/IP6ERSPAN
+the following additional arguments are supported:
+
+.BI "ip link add " DEVICE
+.BR type " { " erspan " | " ip6erspan " }"
+.BI remote " ADDR " local " ADDR " seq
+.RB key
+.I KEY
+.BR erspan_ver " \fIversion "
+[
+.BR erspan " \fIIDX "
+] [
+.BR erspan_dir " { " \fIingress " | " \fIegress " }"
+] [
+.BR erspan_hwid " \fIhwid "
+] [
+.BI "[no]allow-localremote"
+] [
+.RB external
+]
+
+.in +8
+.sp
+.BI remote " ADDR "
+- specifies the remote address of the tunnel.
+
+.sp
+.BI local " ADDR "
+- specifies the fixed local address for tunneled packets.
+It must be an address on another interface on this host.
+
+.sp
+.BR erspan_ver " \fIversion "
+- specifies the ERSPAN version number.
+.IR version
+indicates the ERSPAN version to be created: 1 for version 1 (type II)
+or 2 for version 2 (type III).
+
+.sp
+.BR erspan " \fIIDX "
+- specifies the ERSPAN v1 index field.
+.IR IDX
+indicates a 20 bit index/port number associated with the ERSPAN
+traffic's source port and direction.
+
+.sp
+.BR erspan_dir " { " \fIingress " | " \fIegress " }"
+- specifies the ERSPAN v2 mirrored traffic's direction.
+
+.sp
+.BR erspan_hwid " \fIhwid "
+- an unique identifier of an ERSPAN v2 engine within a system.
+.IR hwid
+is a 6-bit value for users to configure.
+
+.sp
+.BI [no]allow-localremote
+- specifies whether to allow remote endpoint to have an address configured on
+local host.
+
+.sp
+.BR external
+- make this tunnel externally controlled (or not, which is the default).
+In the kernel, this is referred to as collect metadata mode. This flag is
+mutually exclusive with the
+.BR remote ,
+.BR local ,
+.BR erspan_ver ,
+.BR erspan ,
+.BR erspan_dir " and " erspan_hwid
+options.
+
+.in -8
+
.TP
GENEVE Type Support
For a link of type
2012 version.
.in -8
+.TP
+BRIDGE Type Support
+For a link of type
+.I BRIDGE
+the following additional arguments are supported:
+
+.BI "ip link add " DEVICE " type bridge "
+[
+.BI ageing_time " AGEING_TIME "
+] [
+.BI group_fwd_mask " MASK "
+] [
+.BI group_address " ADDRESS "
+] [
+.BI forward_delay " FORWARD_DELAY "
+] [
+.BI hello_time " HELLO_TIME "
+] [
+.BI max_age " MAX_AGE "
+] [
+.BI stp_state " STP_STATE "
+] [
+.BI priority " PRIORITY "
+] [
+.BI vlan_filtering " VLAN_FILTERING "
+] [
+.BI vlan_protocol " VLAN_PROTOCOL "
+] [
+.BI vlan_default_pvid " VLAN_DEFAULT_PVID "
+] [
+.BI vlan_stats_enabled " VLAN_STATS_ENABLED "
+] [
+.BI mcast_snooping " MULTICAST_SNOOPING "
+] [
+.BI mcast_router " MULTICAST_ROUTER "
+] [
+.BI mcast_query_use_ifaddr " MCAST_QUERY_USE_IFADDR "
+] [
+.BI mcast_querier " MULTICAST_QUERIER "
+] [
+.BI mcast_hash_elasticity " HASH_ELASTICITY "
+] [
+.BI mcast_hash_max " HASH_MAX "
+] [
+.BI mcast_last_member_count " LAST_MEMBER_COUNT "
+] [
+.BI mcast_startup_query_count " STARTUP_QUERY_COUNT "
+] [
+.BI mcast_last_member_interval " LAST_MEMBER_INTERVAL "
+] [
+.BI mcast_membership_interval " MEMBERSHIP_INTERVAL "
+] [
+.BI mcast_querier_interval " QUERIER_INTERVAL "
+] [
+.BI mcast_query_interval " QUERY_INTERVAL "
+] [
+.BI mcast_query_response_interval " QUERY_RESPONSE_INTERVAL "
+] [
+.BI mcast_startup_query_interval " STARTUP_QUERY_INTERVAL "
+] [
+.BI mcast_stats_enabled " MCAST_STATS_ENABLED "
+] [
+.BI mcast_igmp_version " IGMP_VERSION "
+] [
+.BI mcast_mld_version " MLD_VERSION "
+] [
+.BI nf_call_iptables " NF_CALL_IPTABLES "
+] [
+.BI nf_call_ip6tables " NF_CALL_IP6TABLES "
+] [
+.BI nf_call_arptables " NF_CALL_ARPTABLES "
+]
+
+.in +8
+.sp
+.BI ageing_time " AGEING_TIME "
+- configure the bridge's FDB entries ageing time, ie the number of seconds a MAC address will be kept in the FDB after a packet has been received from that address. after this time has passed, entries are cleaned up.
+
+.BI group_fwd_mask " MASK "
+- set the group forward mask. This is the bitmask that is applied to decide whether to forward incoming frames destined to link-local addresses, ie addresses of the form 01:80:C2:00:00:0X (defaults to 0, ie the bridge does not forward any link-local frames).
+
+.BI group_address " ADDRESS "
+- set the MAC address of the multicast group this bridge uses for STP. The address must be a link-local address in standard Ethernet MAC address format, ie an address of the form 01:80:C2:00:00:0X, with X in [0, 4..f].
+
+.BI forward_delay " FORWARD_DELAY "
+- set the forwarding delay in seconds, ie the time spent in LISTENING state (before moving to LEARNING) and in LEARNING state (before moving to FORWARDING). Only relevant if STP is enabled. Valid values are between 2 and 30.
+
+.BI hello_time " HELLO_TIME "
+- set the time in seconds between hello packets sent by the bridge, when it is a root bridge or a designated bridges. Only relevant if STP is enabled. Valid values are between 1 and 10.
+
+.BI max_age " MAX_AGE "
+- set the hello packet timeout, ie the time in seconds until another bridge in the spanning tree is assumed to be dead, after reception of its last hello message. Only relevant if STP is enabled. Valid values are between 6 and 40.
+
+.BI stp_state " STP_STATE "
+- turn spanning tree protocol on
+.RI ( STP_STATE " > 0) "
+or off
+.RI ( STP_STATE " == 0). "
+for this bridge.
+
+.BI priority " PRIORITY "
+- set this bridge's spanning tree priority, used during STP root bridge election.
+.I PRIORITY
+is a 16bit unsigned integer.
+
+.BI vlan_filtering " VLAN_FILTERING "
+- turn VLAN filtering on
+.RI ( VLAN_FILTERING " > 0) "
+or off
+.RI ( VLAN_FILTERING " == 0). "
+When disabled, the bridge will not consider the VLAN tag when handling packets.
+
+.BR vlan_protocol " { " 802.1Q " | " 802.1ad " } "
+- set the protocol used for VLAN filtering.
+
+.BI vlan_default_pvid " VLAN_DEFAULT_PVID "
+- set the default PVID (native/untagged VLAN ID) for this bridge.
+
+.BI vlan_stats_enabled " VLAN_STATS_ENABLED "
+- enable
+.RI ( VLAN_STATS_ENABLED " == 1) "
+or disable
+.RI ( VLAN_STATS_ENABLED " == 0) "
+per-VLAN stats accounting.
+
+.BI mcast_snooping " MULTICAST_SNOOPING "
+- turn multicast snooping on
+.RI ( MULTICAST_SNOOPING " > 0) "
+or off
+.RI ( MULTICAST_SNOOPING " == 0). "
+
+.BI mcast_router " MULTICAST_ROUTER "
+- set bridge's multicast router if IGMP snooping is enabled.
+.I MULTICAST_ROUTER
+is an integer value having the following meaning:
+.in +8
+.sp
+.B 0
+- disabled.
+
+.B 1
+- automatic (queried).
+
+.B 2
+- permanently enabled.
+.in -8
+
+.BI mcast_query_use_ifaddr " MCAST_QUERY_USE_IFADDR "
+- whether to use the bridge's own IP address as source address for IGMP queries
+.RI ( MCAST_QUERY_USE_IFADDR " > 0) "
+or the default of 0.0.0.0
+.RI ( MCAST_QUERY_USE_IFADDR " == 0). "
+
+.BI mcast_querier " MULTICAST_QUERIER "
+- enable
+.RI ( MULTICAST_QUERIER " > 0) "
+or disable
+.RI ( MULTICAST_QUERIER " == 0) "
+IGMP querier, ie sending of multicast queries by the bridge (default: disabled).
+
+.BI mcast_querier_interval " QUERIER_INTERVAL "
+- interval between queries sent by other routers. if no queries are seen after this delay has passed, the bridge will start to send its own queries (as if
+.BI mcast_querier
+was enabled).
+
+.BI mcast_hash_elasticity " HASH_ELASTICITY "
+- set multicast database hash elasticity, ie the maximum chain length in the multicast hash table (defaults to 4).
+
+.BI mcast_hash_max " HASH_MAX "
+- set maximum size of multicast hash table (defaults to 512, value must be a power of 2).
+
+.BI mcast_last_member_count " LAST_MEMBER_COUNT "
+- set multicast last member count, ie the number of queries the bridge will send before stopping forwarding a multicast group after a "leave" message has been received (defaults to 2).
+
+.BI mcast_last_member_interval " LAST_MEMBER_INTERVAL "
+- interval between queries to find remaining members of a group, after a "leave" message is received.
+
+.BI mcast_startup_query_count " STARTUP_QUERY_COUNT "
+- set the number of IGMP queries to send during startup phase (defaults to 2).
+
+.BI mcast_startup_query_interval " STARTUP_QUERY_INTERVAL "
+- interval between queries in the startup phase.
+
+.BI mcast_query_interval " QUERY_INTERVAL "
+- interval between queries sent by the bridge after the end of the startup phase.
+
+.BI mcast_query_response_interval " QUERY_RESPONSE_INTERVAL "
+- set the Max Response Time/Maximum Response Delay for IGMP/MLD queries sent by the bridge.
+
+.BI mcast_membership_interval " MEMBERSHIP_INTERVAL "
+- delay after which the bridge will leave a group, if no membership reports for this group are received.
+
+.BI mcast_stats_enabled " MCAST_STATS_ENABLED "
+- enable
+.RI ( MCAST_STATS_ENABLED " > 0) "
+or disable
+.RI ( MCAST_STATS_ENABLED " == 0) "
+multicast (IGMP/MLD) stats accounting.
+
+.BI mcast_igmp_version " IGMP_VERSION "
+- set the IGMP version.
+
+.BI mcast_mld_version " MLD_VERSION "
+- set the MLD version.
+
+.BI nf_call_iptables " NF_CALL_IPTABLES "
+- enable
+.RI ( NF_CALL_IPTABLES " > 0) "
+or disable
+.RI ( NF_CALL_IPTABLES " == 0) "
+iptables hooks on the bridge.
+
+.BI nf_call_ip6tables " NF_CALL_IP6TABLES "
+- enable
+.RI ( NF_CALL_IP6TABLES " > 0) "
+or disable
+.RI ( NF_CALL_IP6TABLES " == 0) "
+ip6tables hooks on the bridge.
+
+.BI nf_call_arptables " NF_CALL_ARPTABLES "
+- enable
+.RI ( NF_CALL_ARPTABLES " > 0) "
+or disable
+.RI ( NF_CALL_ARPTABLES " == 0) "
+arptables hooks on the bridge.
+
+
+.in -8
+
.TP
MACsec Type Support
For a link of type
.sp
.BI max_tx_rate " TXRATE"
- change the allowed maximum transmit bandwidth, in Mbps, for the specified VF.
+Setting this parameter to 0 disables rate limiting.
.B vf
parameter must be specified.
.BI min_tx_rate " TXRATE"
- change the allowed minimum transmit bandwidth, in Mbps, for the specified VF.
Minimum TXRATE should be always <= Maximum TXRATE.
+Setting this parameter to 0 disables rate limiting.
.B vf
parameter must be specified.
which may impact security and/or performance. (e.g. VF multicast promiscuous mode)
.sp
.BI node_guid " eui64"
-- configure node GUID for the VF.
+- configure node GUID for Infiniband VFs.
.sp
.BI port_guid " eui64"
-- configure port GUID for the VF.
+- configure port GUID for Infiniband VFs.
.in -8
+.TP
+.B xdp object "|" pinned "|" off
+set (or unset) a XDP ("eXpress Data Path") BPF program to run on every
+packet at driver level.
+.B ip link
+output will indicate a
+.B xdp
+flag for the networking device. If the driver does not have native XDP
+support, the kernel will fall back to a slower, driver-independent "generic"
+XDP variant. The
+.B ip link
+output will in that case indicate
+.B xdpgeneric
+instead of
+.B xdp
+only. If the driver does have native XDP support, but the program is
+loaded under
+.B xdpgeneric object "|" pinned
+then the kernel will use the generic XDP variant instead of the native one.
+.B xdpdrv
+has the opposite effect of requestsing that the automatic fallback to the
+generic XDP variant be disabled and in case driver is not XDP-capable error
+should be returned.
+.B xdpdrv
+also disables hardware offloads.
+.B xdpoffload
+in ip link output indicates that the program has been offloaded to hardware
+and can also be used to request the "offload" mode, much like
+.B xdpgeneric
+it forces program to be installed specifically in HW/FW of the apater.
+
+.B off
+(or
+.B none
+)
+- Detaches any currently attached XDP/BPF program from the given device.
+
+.BI object " FILE "
+- Attaches a XDP/BPF program to the given device. The
+.I FILE
+points to a BPF ELF file (f.e. generated by LLVM) that contains the BPF
+program code, map specifications, etc. If a XDP/BPF program is already
+attached to the given device, an error will be thrown. If no XDP/BPF
+program is currently attached, the device supports XDP and the program
+from the BPF ELF file passes the kernel verifier, then it will be attached
+to the device. If the option
+.I -force
+is passed to
+.B ip
+then any prior attached XDP/BPF program will be atomically overridden and
+no error will be thrown in this case. If no
+.B section
+option is passed, then the default section name ("prog") will be assumed,
+otherwise the provided section name will be used. If no
+.B verbose
+option is passed, then a verifier log will only be dumped on load error.
+See also
+.B EXAMPLES
+section for usage examples.
+
+.BI section " NAME "
+- Specifies a section name that contains the BPF program code. If no section
+name is specified, the default one ("prog") will be used. This option is
+to be passed with the
+.B object
+option.
+
+.BI verbose
+- Act in verbose mode. For example, even in case of success, this will
+print the verifier log in case a program was loaded from a BPF ELF file.
+
+.BI pinned " FILE "
+- Attaches a XDP/BPF program to the given device. The
+.I FILE
+points to an already pinned BPF program in the BPF file system. The option
+.B section
+doesn't apply here, but otherwise semantics are the same as with the option
+.B object
+described already.
+
.TP
.BI master " DEVICE"
set master device of the device (enslave device).
.B "ip link set type bridge_slave"
[
+.B fdb_flush
+] [
.BI state " STATE"
] [
.BI priority " PRIO"
] [
.BR mcast_fast_leave " { " on " | " off "}"
] [
-.BR mcast_flood " { " on " | " off " } ]"
+.BR mcast_flood " { " on " | " off " }"
+] [
+.BR group_fwd_mask " MASK"
+] [
+.BR neigh_suppress " { " on " | " off " } ]"
+] [
+.BR vlan_tunnel " { " on " | " off " } ]"
.in +8
.sp
+.B fdb_flush
+- flush bridge slave's fdb dynamic entries.
+
.BI state " STATE"
- Set port state.
.I STATE
.BR 4 " (blocking)."
.BI priority " PRIO"
-- set port priority (a 16bit unsigned value).
+- set port priority (allowed values are between 0 and 63, inclusively).
.BI cost " COST"
-- set port cost (a 32bit unsigned value).
+- set port cost (allowed values are between 1 and 65535, inclusively).
.BR guard " { " on " | " off " }"
- block incoming BPDU packets on this port.
.BR mcast_flood " { " on " | " off " }"
- controls whether a given port will be flooded with multicast traffic for which there is no MDB entry.
+.BI group_fwd_mask " MASK "
+- set the group forward mask. This is the bitmask that is applied to decide whether to forward incoming frames destined to link-local addresses, ie addresses of the form 01:80:C2:00:00:0X (defaults to 0, ie the bridge does not forward any link-local frames coming on this port).
+
+.BR neigh_suppress " { " on " | " off " }"
+- controls whether neigh discovery (arp and nd) proxy and suppression is enabled on the port. By default this flag is off.
+
+.BR vlan_tunnel " { " on " | " off " }"
+- Controls whether vlan to tunnel mapping is enabled on the port. By default this flag is off.
+
.in -8
.TP
didn't filter already. Therefore any string is accepted, but may lead to empty
output.
+.SS ip link xstats - display extended statistics
+
+.TP
+.BI type " TYPE "
+.I TYPE
+specifies the type of devices to display extended statistics for.
+
+.SS ip link afstats - display address-family specific statistics
+
+.TP
+.BI dev " DEVICE "
+.I DEVICE
+specifies the device to display address-family statistics for.
+
.SS ip link help - display help
.PP
.RS 4
Creates an IPIP that is encapsulated with Generic UDP Encapsulation,
and the outer UDP checksum and remote checksum offload are enabled.
-
+.RE
+.PP
+ip link set dev eth0 xdp obj prog.o
+.RS 4
+Attaches a XDP/BPF program to device eth0, where the program is
+located in prog.o, section "prog" (default section). In case a
+XDP/BPF program is already attached, throw an error.
+.RE
+.PP
+ip -force link set dev eth0 xdp obj prog.o sec foo
+.RS 4
+Attaches a XDP/BPF program to device eth0, where the program is
+located in prog.o, section "foo". In case a XDP/BPF program is
+already attached, it will be overridden by the new one.
+.RE
+.PP
+ip -force link set dev eth0 xdp pinned /sys/fs/bpf/foo
+.RS 4
+Attaches a XDP/BPF program to device eth0, where the program was
+previously pinned as an object node into BPF file system under
+name foo.
+.RE
+.PP
+ip link set dev eth0 xdp off
+.RS 4
+If a XDP/BPF program is attached on device eth0, detach it and
+effectively turn off XDP for device eth0.
.RE
.PP
ip link add link wpan0 lowpan0 type lowpan
Creates a 6LoWPAN interface named lowpan0 on the underlying
IEEE 802.15.4 device wpan0.
.RE
+.PP
+ip link add dev ip6erspan11 type ip6erspan seq key 102
+local fc00:100::2 remote fc00:100::1
+erspan_ver 2 erspan_dir ingress erspan_hwid 17
+.RS 4
+Creates a IP6ERSPAN version 2 interface named ip6erspan00.
+.RE
.SH SEE ALSO
.br
projects / mirror_iproute2.git / blobdiff