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diff --git a/man/man8/tc-flower.8 b/man/man8/tc-flower.8 new file mode 100644 index 0000000..8324581 --- /dev/null +++ b/man/man8/tc-flower.8 @@ -0,0 +1,557 @@ +.TH "Flower filter in tc" 8 "22 Oct 2015" "iproute2" "Linux" + +.SH NAME +flower \- flow based traffic control filter +.SH SYNOPSIS +.in +8 +.ti -8 +.BR tc " " filter " ... " flower " [ " +.IR MATCH_LIST " ] [ " +.B action +.IR ACTION_SPEC " ] [ " +.B classid +.IR CLASSID " ] [ " +.B hw_tc +.IR TCID " ]" + + +.ti -8 +.IR MATCH_LIST " := [ " MATCH_LIST " ] " MATCH + +.ti -8 +.IR MATCH " := { " +.B indev +.IR ifname " | " +.BR verbose +.RI " | " +.BR skip_sw " | " skip_hw +.RI " | { " +.BR dst_mac " | " src_mac " } " +.IR MASKED_LLADDR " | " +.B vlan_id +.IR VID " | " +.B vlan_prio +.IR PRIORITY " | " +.BR vlan_ethtype " { " ipv4 " | " ipv6 " | " +.IR ETH_TYPE " } | " +.B cvlan_id +.IR VID " | " +.B cvlan_prio +.IR PRIORITY " | " +.BR cvlan_ethtype " { " ipv4 " | " ipv6 " | " +.IR ETH_TYPE " } | " +.B pppoe_sid +.IR PSID " | " +.BR ppp_proto " { " ip " | " ipv6 " | " mpls_uc " | " mpls_mc " | " +.IR PPP_PROTO " } | " +.B mpls +.IR LSE_LIST " | " +.B mpls_label +.IR LABEL " | " +.B mpls_tc +.IR TC " | " +.B mpls_bos +.IR BOS " | " +.B mpls_ttl +.IR TTL " | " +.B l2tpv3_sid +.IR LSID " | " +.BR ip_proto " { " tcp " | " udp " | " sctp " | " icmp " | " icmpv6 " | " l2tp " | " +.IR IP_PROTO " } | " +.B ip_tos +.IR MASKED_IP_TOS " | " +.B ip_ttl +.IR MASKED_IP_TTL " | { " +.BR dst_ip " | " src_ip " } " +.IR PREFIX " | { " +.BR dst_port " | " src_port " } { " +.IR MASKED_NUMBER " | " +.IR min_port_number-max_port_number " } | " +.B tcp_flags +.IR MASKED_TCP_FLAGS " | " +.B type +.IR MASKED_TYPE " | " +.B code +.IR MASKED_CODE " | { " +.BR arp_tip " | " arp_sip " } " +.IR IPV4_PREFIX " | " +.BR arp_op " { " request " | " reply " | " +.IR OP " } | { " +.BR arp_tha " | " arp_sha " } " +.IR MASKED_LLADDR " | " +.B enc_key_id +.IR KEY-ID " | {" +.BR enc_dst_ip " | " enc_src_ip " } { " +.IR ipv4_address " | " ipv6_address " } | " +.B enc_dst_port +.IR port_number " | " +.B enc_tos +.IR TOS " | " +.B enc_ttl +.IR TTL " | " +{ +.B geneve_opts +| +.B vxlan_opts +| +.B erspan_opts +| +.B gtp_opts +} +.IR OPTIONS " | " +.BR ip_flags +.IR IP_FLAGS " | " +.B l2_miss +.IR L2_MISS " | " +.BR cfm +.IR CFM_OPTIONS " }" + +.ti -8 +.IR LSE_LIST " := [ " LSE_LIST " ] " LSE + +.ti -8 +.IR LSE " := " +.B lse depth +.IR DEPTH " { " +.B label +.IR LABEL " | " +.B tc +.IR TC " | " +.B bos +.IR BOS " | " +.B ttl +.IR TTL " }" + +.ti -8 +.IR CFM " := " +.B cfm mdl +.IR LEVEL " | " +.B op +.IR OPCODE " + +.SH DESCRIPTION +The +.B flower +filter matches flows to the set of keys specified and assigns an arbitrarily +chosen class ID to packets belonging to them. Additionally (or alternatively) an +action from the generic action framework may be called. +.SH OPTIONS +.TP +.BI action " ACTION_SPEC" +Apply an action from the generic actions framework on matching packets. +.TP +.BI classid " CLASSID" +Specify a class to pass matching packets on to. +.I CLASSID +is in the form +.BR X : Y ", while " X " and " Y +are interpreted as numbers in hexadecimal format. +.TP +.BI hw_tc " TCID" +Specify a hardware traffic class to pass matching packets on to. TCID is in the +range 0 through 15. +.TP +.BI indev " ifname" +Match on incoming interface name. Obviously this makes sense only for forwarded +flows. +.I ifname +is the name of an interface which must exist at the time of +.B tc +invocation. +.TP +.BI verbose +Enable verbose logging, including offloading errors when not using +.B skip_sw +flag. +.TP +.BI skip_sw +Do not process filter by software. If hardware has no offload support for this +filter, or TC offload is not enabled for the interface, operation will fail. +.TP +.BI skip_hw +Do not process filter by hardware. +.TP +.BI dst_mac " MASKED_LLADDR" +.TQ +.BI src_mac " MASKED_LLADDR" +Match on source or destination MAC address. A mask may be optionally +provided to limit the bits of the address which are matched. A mask is +provided by following the address with a slash and then the mask. It may be +provided in LLADDR format, in which case it is a bitwise mask, or as a +number of high bits to match. If the mask is missing then a match on all +bits is assumed. +.TP +.BI num_of_vlans " NUM" +Match on the number of vlan tags in the packet. +.I NUM +can be 0 or small positive integer. Typically in 0-4 range. +.TP +.BI vlan_id " VID" +Match on vlan tag id. +.I VID +is an unsigned 12bit value in decimal format. +.TP +.BI vlan_prio " PRIORITY" +Match on vlan tag priority. +.I PRIORITY +is an unsigned 3bit value in decimal format. +.TP +.BI vlan_ethtype " VLAN_ETH_TYPE" +Match on layer three protocol. +.I VLAN_ETH_TYPE +may be either +.BR ipv4 ", " ipv6 +or an unsigned 16bit value in hexadecimal format. To match on QinQ packet, it must be 802.1Q or 802.1AD. +.TP +.BI cvlan_id " VID" +Match on QinQ inner vlan tag id. +.I VID +is an unsigned 12bit value in decimal format. +.TP +.BI cvlan_prio " PRIORITY" +Match on QinQ inner vlan tag priority. +.I PRIORITY +is an unsigned 3bit value in decimal format. +.TP +.BI cvlan_ethtype " VLAN_ETH_TYPE" +Match on QinQ layer three protocol. +.I VLAN_ETH_TYPE +may be either +.BR ipv4 ", " ipv6 +or an unsigned 16bit value in hexadecimal format. +.TP +.BI pppoe_sid " PSID" +Match on PPPoE session id. +.I PSID +is an unsigned 16bit value in decimal format. +.TP +.BI ppp_proto " PPP_PROTO" +Match on PPP layer three protocol. +.I PPP_PROTO +may be either +.BR ip ", " ipv6 ", " mpls_uc ", " mpls_mc +or an unsigned 16bit value in hexadecimal format. +.TP +.BI mpls " LSE_LIST" +Match on the MPLS label stack. +.I LSE_LIST +is a list of Label Stack Entries, each introduced by the +.BR lse " keyword." +This option can't be used together with the standalone +.BR mpls_label ", " mpls_tc ", " mpls_bos " and " mpls_ttl " options." +.RS +.TP +.BI lse " LSE_OPTIONS" +Match on an MPLS Label Stack Entry. +.I LSE_OPTIONS +is a list of options that describe the properties of the LSE to match. +.RS +.TP +.BI depth " DEPTH" +The depth of the Label Stack Entry to consider. Depth starts at 1 (the +outermost Label Stack Entry). The maximum usable depth may be limited by the +kernel. This option is mandatory. +.I DEPTH +is an unsigned 8 bit value in decimal format. +.TP +.BI label " LABEL" +Match on the MPLS Label field at the specified +.BR depth . +.I LABEL +is an unsigned 20 bit value in decimal format. +.TP +.BI tc " TC" +Match on the MPLS Traffic Class field at the specified +.BR depth . +.I TC +is an unsigned 3 bit value in decimal format. +.TP +.BI bos " BOS" +Match on the MPLS Bottom Of Stack field at the specified +.BR depth . +.I BOS +is a 1 bit value in decimal format. +.TP +.BI ttl " TTL" +Match on the MPLS Time To Live field at the specified +.BR depth . +.I TTL +is an unsigned 8 bit value in decimal format. +.RE +.RE + +.TP +.BI mpls_label " LABEL" +Match the label id in the outermost MPLS label stack entry. +.I LABEL +is an unsigned 20 bit value in decimal format. +.TP +.BI mpls_tc " TC" +Match on the MPLS TC field, which is typically used for packet priority, +in the outermost MPLS label stack entry. +.I TC +is an unsigned 3 bit value in decimal format. +.TP +.BI mpls_bos " BOS" +Match on the MPLS Bottom Of Stack field in the outermost MPLS label stack +entry. +.I BOS +is a 1 bit value in decimal format. +.TP +.BI mpls_ttl " TTL" +Match on the MPLS Time To Live field in the outermost MPLS label stack +entry. +.I TTL +is an unsigned 8 bit value in decimal format. +.TP +.BI l2tpv3_sid " LSID" +Match on L2TPv3 session id field transported over IPv4 or IPv6. +.I LSID +is an unsigned 32 bit value in decimal format. +.TP +.BI ip_proto " IP_PROTO" +Match on layer four protocol. +.I IP_PROTO +may be +.BR tcp ", " udp ", " sctp ", " icmp ", " icmpv6 ", " l2tp +or an unsigned 8bit value in hexadecimal format. +.TP +.BI ip_tos " MASKED_IP_TOS" +Match on ipv4 TOS or ipv6 traffic-class - eight bits in hexadecimal format. +A mask may be optionally provided to limit the bits which are matched. A mask +is provided by following the value with a slash and then the mask. If the mask +is missing then a match on all bits is assumed. +.TP +.BI ip_ttl " MASKED_IP_TTL" +Match on ipv4 TTL or ipv6 hop-limit - eight bits value in decimal or hexadecimal format. +A mask may be optionally provided to limit the bits which are matched. Same +logic is used for the mask as with matching on ip_tos. +.TP +.BI dst_ip " PREFIX" +.TQ +.BI src_ip " PREFIX" +Match on source or destination IP address. +.I PREFIX +must be a valid IPv4 or IPv6 address, depending on the \fBprotocol\fR +option to tc filter, optionally followed by a slash and the prefix length. +If the prefix is missing, \fBtc\fR assumes a full-length host match. +.TP +.IR \fBdst_port " { " MASKED_NUMBER " | " " MIN_VALUE-MAX_VALUE " } +.TQ +.IR \fBsrc_port " { " MASKED_NUMBER " | " " MIN_VALUE-MAX_VALUE " } +Match on layer 4 protocol source or destination port number, with an +optional mask. Alternatively, the minimum and maximum values can be +specified to match on a range of layer 4 protocol source or destination +port numbers. Only available for +.BR ip_proto " values " udp ", " tcp " and " sctp +which have to be specified in beforehand. +.TP +.BI tcp_flags " MASKED_TCP_FLAGS" +Match on TCP flags represented as 12bit bitfield in in hexadecimal format. +A mask may be optionally provided to limit the bits which are matched. A mask +is provided by following the value with a slash and then the mask. If the mask +is missing then a match on all bits is assumed. +.TP +.BI type " MASKED_TYPE" +.TQ +.BI code " MASKED_CODE" +Match on ICMP type or code. A mask may be optionally provided to limit the +bits of the address which are matched. A mask is provided by following the +address with a slash and then the mask. The mask must be as a number which +represents a bitwise mask If the mask is missing then a match on all bits +is assumed. Only available for +.BR ip_proto " values " icmp " and " icmpv6 +which have to be specified in beforehand. +.TP +.BI arp_tip " IPV4_PREFIX" +.TQ +.BI arp_sip " IPV4_PREFIX" +Match on ARP or RARP sender or target IP address. +.I IPV4_PREFIX +must be a valid IPv4 address optionally followed by a slash and the prefix +length. If the prefix is missing, \fBtc\fR assumes a full-length host +match. +.TP +.BI arp_op " ARP_OP" +Match on ARP or RARP operation. +.I ARP_OP +may be +.BR request ", " reply +or an integer value 0, 1 or 2. A mask may be optionally provided to limit +the bits of the operation which are matched. A mask is provided by +following the address with a slash and then the mask. It may be provided as +an unsigned 8 bit value representing a bitwise mask. If the mask is missing +then a match on all bits is assumed. +.TP +.BI arp_sha " MASKED_LLADDR" +.TQ +.BI arp_tha " MASKED_LLADDR" +Match on ARP or RARP sender or target MAC address. A mask may be optionally +provided to limit the bits of the address which are matched. A mask is +provided by following the address with a slash and then the mask. It may be +provided in LLADDR format, in which case it is a bitwise mask, or as a +number of high bits to match. If the mask is missing then a match on all +bits is assumed. +.TP +.BI enc_key_id " NUMBER" +.TQ +.BI enc_dst_ip " PREFIX" +.TQ +.BI enc_src_ip " PREFIX" +.TQ +.BI enc_dst_port " NUMBER" +.TQ +.BI enc_tos " NUMBER" +.TQ +.BI enc_ttl " NUMBER" +.TQ +.BR +.TP +.BI ct_state " CT_STATE" +.TQ +.BI ct_zone " CT_MASKED_ZONE" +.TQ +.BI ct_mark " CT_MASKED_MARK" +.TQ +.BI ct_label " CT_MASKED_LABEL" +Matches on connection tracking info +.RS +.TP +.I CT_STATE +Match the connection state, and can be combination of [{+|-}flag] flags, where flag can be one of +.RS +.TP +trk - Tracked connection. +.TP +new - New connection. +.TP +est - Established connection. +.TP +rpl - The packet is in the reply direction, meaning that it is in the opposite direction from the packet that initiated the connection. +.TP +inv - The state is invalid. The packet couldn't be associated to a connection. +.TP +rel - The packet is related to an existing connection. +.TP +Example: +trk+est +.RE +.TP +.I CT_MASKED_ZONE +Match the connection zone, and can be masked. +.TP +.I CT_MASKED_MARK +32bit match on the connection mark, and can be masked. +.TP +.I CT_MASKED_LABEL +128bit match on the connection label, and can be masked. +.RE +.TP +.BI geneve_opts " OPTIONS" +.TQ +.BI vxlan_opts " OPTIONS" +.TQ +.BI erspan_opts " OPTIONS" +.TQ +.BI gtp_opts " OPTIONS" +Match on IP tunnel metadata. Key id +.I NUMBER +is a 32 bit tunnel key id (e.g. VNI for VXLAN tunnel). +.I PREFIX +must be a valid IPv4 or IPv6 address optionally followed by a slash and the +prefix length. If the prefix is missing, \fBtc\fR assumes a full-length +host match. Dst port +.I NUMBER +is a 16 bit UDP dst port. Tos +.I NUMBER +is an 8 bit tos (dscp+ecn) value, ttl +.I NUMBER +is an 8 bit time-to-live value. geneve_opts +.I OPTIONS +must be a valid list of comma-separated geneve options where each option +consists of a key optionally followed by a slash and corresponding mask. If +the masks is missing, \fBtc\fR assumes a full-length match. The options can +be described in the form CLASS:TYPE:DATA/CLASS_MASK:TYPE_MASK:DATA_MASK, +where CLASS is represented as a 16bit hexadecimal value, TYPE as an 8bit +hexadecimal value and DATA as a variable length hexadecimal value. +vxlan_opts +.I OPTIONS +doesn't support multiple options, and it consists of a key followed by a slash +and corresponding mask. If the mask is missing, \fBtc\fR assumes a full-length +match. The option can be described in the form GBP/GBP_MASK, where GBP is +represented as a 32bit number. +erspan_opts +.I OPTIONS +doesn't support multiple options, and it consists of a key followed by a slash +and corresponding mask. If the mask is missing, \fBtc\fR assumes a full-length +match. The option can be described in the form +VERSION:INDEX:DIR:HWID/VERSION:INDEX_MASK:DIR_MASK:HWID_MASK, where VERSION is +represented as a 8bit number, INDEX as an 32bit number, DIR and HWID as a 8bit +number. Multiple options is not supported. Note INDEX/INDEX_MASK is used when +VERSION is 1, and DIR/DIR_MASK and HWID/HWID_MASK are used when VERSION is 2. +gtp_opts +.I OPTIONS +doesn't support multiple options, and it consists of a key followed by a slash +and corresponding mask. If the mask is missing, \fBtc\fR assumes a full-length +match. The option can be described in the form PDU_TYPE:QFI/PDU_TYPE_MASK:QFI_MASK +where both PDU_TYPE and QFI are represented as a 8bit hexadecimal values. +.TP +.BI ip_flags " IP_FLAGS" +.I IP_FLAGS +may be either +.BR frag ", " nofrag ", " firstfrag " or " nofirstfrag +where frag and nofrag could be used to match on fragmented packets or not, +respectively. firstfrag and nofirstfrag can be used to further distinguish +fragmented packet. firstfrag can be used to indicate the first fragmented +packet. nofirstfrag can be used to indicates subsequent fragmented packets +or non-fragmented packets. +.TP + +.BI l2_miss " L2_MISS" +Match on layer 2 miss in the bridge driver's FDB / MDB. \fIL2_MISS\fR may be 0 +or 1. When 1, match on packets that encountered a layer 2 miss. When 0, match +on packets that were forwarded using an FDB / MDB entry. Note that broadcast +packets do not encounter a miss since a lookup is not performed for them. +.TP + +.BI cfm " CFM_OPTIONS" +Match on Connectivity Fault Management (CFM) fields. +.I CFM_OPTIONS +is a list of options that describe the properties of the CFM information +fields to match. +.RS +.TP +.BI mdl " LEVEL " +Match on the Maintenance Domain (MD) level field. +\fILEVEL\fR is an unsigned 3 bit value in decimal format. +.TP +.BI op " OPCODE " +Match on the CFM opcode field. \fIOPCODE\fR is an unsigned 8 bit value in +decimal format. + +.SH NOTES +As stated above where applicable, matches of a certain layer implicitly depend +on the matches of the next lower layer. Precisely, layer one and two matches +(\fBindev\fR, \fBdst_mac\fR and \fBsrc_mac\fR) +have no dependency, +MPLS and layer three matches +(\fBmpls\fR, \fBmpls_label\fR, \fBmpls_tc\fR, \fBmpls_bos\fR, \fBmpls_ttl\fR, +\fBip_proto\fR, \fBdst_ip\fR, \fBsrc_ip\fR, \fBarp_tip\fR, \fBarp_sip\fR, +\fBarp_op\fR, \fBarp_tha\fR, \fBarp_sha\fR and \fBip_flags\fR) +depend on the +.B protocol +option of tc filter, layer four port matches +(\fBdst_port\fR and \fBsrc_port\fR) +depend on +.B ip_proto +being set to +.BR tcp ", " udp " or " sctp, +and finally ICMP matches (\fBcode\fR and \fBtype\fR) depend on +.B ip_proto +being set to +.BR icmp " or " icmpv6. +.P +There can be only used one mask per one prio. If user needs to specify different +mask, he has to use different prio. +.SH SEE ALSO +.BR tc (8), +.BR tc-flow (8) |