- RX interrupts.
- Statistics query including Basic, Extended and per queue.
- Rx HW timestamp.
-- Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP.
+- Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP, Geneve.
- Tunnel HW offloads: packet type, inner/outer RSS, IP and UDP checksum verification.
- NIC HW offloads: encapsulation (vxlan, gre, mplsoudp, mplsogre), NAT, routing, TTL
increment/decrement, count, drop, mark. For details please see :ref:`mlx5_offloads_support`.
Will match any ipv4 packet (VLAN included).
-- A multi segment packet must have less than 6 segments in case the Tx burst function
- is set to multi-packet send or Enhanced multi-packet send. Otherwise it must have
- less than 50 segments.
+- VLAN pop offload command:
+
+ - Flow rules having a VLAN pop offload command as one of their actions and
+ are lacking a match on VLAN as one of their items are not supported.
+ - The command is not supported on egress traffic.
+
+- VLAN push offload is not supported on ingress traffic.
+
+- VLAN set PCP offload is not supported on existing headers.
+
+- A multi segment packet must have not more segments than reported by dev_infos_get()
+ in tx_desc_lim.nb_seg_max field. This value depends on maximal supported Tx descriptor
+ size and ``txq_inline_min`` settings and may be from 2 (worst case forced by maximal
+ inline settings) to 58.
- Flows with a VXLAN Network Identifier equal (or ends to be equal)
to 0 are not supported.
- L3 VXLAN and VXLAN-GPE tunnels cannot be supported together with MPLSoGRE and MPLSoUDP.
+- Match on Geneve header supports the following fields only:
+
+ - VNI
+ - OAM
+ - protocol type
+ - options length
+ Currently, the only supported options length value is 0.
+
- VF: flow rules created on VF devices can only match traffic targeted at the
configured MAC addresses (see ``rte_eth_dev_mac_addr_add()``).
To receive IPv6 Multicast messages on VM, explicitly set the relevant
MAC address using rte_eth_dev_mac_addr_add() API.
+- The amount of descriptors in Tx queue may be limited by data inline settings.
+ Inline data require the more descriptor building blocks and overall block
+ amount may exceed the hardware supported limits. The application should
+ reduce the requested Tx size or adjust data inline settings with
+ ``txq_inline_max`` and ``txq_inline_mpw`` devargs keys.
+
- E-Switch decapsulation Flow:
- can be applied to PF port only.
- LRO:
- - Requires DevX to be enabled.
+ - Requires DevX and DV flow to be enabled.
- KEEP_CRC offload cannot be supported with LRO.
- The first mbuf length, without head-room, must be big enough to include the
TCP header (122B).
option should be used with care, as it may lower performance when back
pressure is not expected.
+ If inline data are enabled it may affect the maximal size of Tx queue in
+ descriptors because the inline data increase the descriptor size and
+ queue size limits supported by hardware may be exceeded.
+
- ``txq_inline_min`` parameter [int]
Minimal amount of data to be inlined into WQE during Tx operations. NICs
may require this minimal data amount to operate correctly. The exact value
- may depend on NIC operation mode, requested offloads, etc.
+ may depend on NIC operation mode, requested offloads, etc. It is strongly
+ recommended to omit this parameter and use the default values. Anyway,
+ applications using this parameter should take into consideration that
+ specifying an inconsistent value may prevent the NIC from sending packets.
If ``txq_inline_min`` key is present the specified value (may be aligned
by the driver in order not to exceed the limits and provide better descriptor
- space utilization) will be used by the driver and it is guaranteed the
- requested data bytes are inlined into the WQE beside other inline settings.
- This keys also may update ``txq_inline_max`` value (default of specified
- explicitly in devargs) to reserve the space for inline data.
+ space utilization) will be used by the driver and it is guaranteed that
+ requested amount of data bytes are inlined into the WQE beside other inline
+ settings. This key also may update ``txq_inline_max`` value (default
+ or specified explicitly in devargs) to reserve the space for inline data.
If ``txq_inline_min`` key is not present, the value may be queried by the
driver from the NIC via DevX if this feature is available. If there is no DevX
enabled/supported the value 18 (supposing L2 header including VLAN) is set
- for ConnectX-4, value 58 (supposing L2-L4 headers, required by configurations
- over E-Switch) is set for ConnectX-4 Lx, and 0 is set by default for ConnectX-5
+ for ConnectX-4 and ConnectX-4LX, and 0 is set by default for ConnectX-5
and newer NICs. If packet is shorter the ``txq_inline_min`` value, the entire
packet is inlined.
- For the ConnectX-4 and ConnectX-4 Lx NICs driver does not allow to set
- this value below 18 (minimal L2 header, including VLAN).
+ For ConnectX-4 NIC, driver does not allow specifying value below 18
+ (minimal L2 header, including VLAN), error will be raised.
+
+ For ConnectX-4LX NIC, it is allowed to specify values below 18, but
+ it is not recommended and may prevent NIC from sending packets over
+ some configurations.
Please, note, this minimal data inlining disengages eMPW feature (Enhanced
Multi-Packet Write), because last one does not support partial packet inlining.
The default ``txq_inline_max`` value is 290. The specified value may be adjusted
by the driver in order not to exceed the limit (930 bytes) and to provide better
WQE space filling without gaps, the adjustment is reflected in the debug log.
+ Also, the default value (290) may be decreased in run-time if the large transmit
+ queue size is requested and hardware does not support enough descriptor
+ amount, in this case warning is emitted. If ``txq_inline_max`` key is
+ specified and requested inline settings can not be satisfied then error
+ will be raised.
- ``txq_inline_mpw`` parameter [int]
WQE space filling without gaps, the adjustment is reflected in the debug log.
Due to multiple packets may be included to the same WQE with Enhanced Multi
Packet Write Method and overall WQE size is limited it is not recommended to
- specify large values for the ``txq_inline_mpw``.
+ specify large values for the ``txq_inline_mpw``. Also, the default value (268)
+ may be decreased in run-time if the large transmit queue size is requested
+ and hardware does not support enough descriptor amount, in this case warning
+ is emitted. If ``txq_inline_mpw`` key is specified and requested inline
+ settings can not be satisfied then error will be raised.
- ``txqs_max_vec`` parameter [int]
FLEX_PARSER_PROFILE_ENABLE=2
+- enable Geneve flow matching::
+
+ FLEX_PARSER_PROFILE_ENABLE=0
+
Prerequisites
-------------
| | (set_ipv4_src / | | OFED 4.6-2 | | OFED 4.6-2 |
| | set_ipv4_dst / | | rdma-core 24 | | rdma-core 23 |
| | set_ipv6_src / | | ConnectX-5 | | ConnectX-5 |
- | | set_ipv6_dst / | | |
- | | set_tp_src / | | |
- | | set_tp_dst / | | |
- | | dec_ttl / | | |
- | | set_ttl / | | |
- | | set_mac_src / | | |
- | | set_mac_dst) | | |
+ | | set_ipv6_dst / | | | | |
+ | | set_tp_src / | | | | |
+ | | set_tp_dst / | | | | |
+ | | dec_ttl / | | | | |
+ | | set_ttl / | | | | |
+ | | set_mac_src / | | | | |
+ | | set_mac_dst) | | | | |
+ | | | | | | |
+ | | (of_set_vlan_vid) | | DPDK 19.11 | | DPDK 19.11 |
+ | | | OFED 4.6-4 | | OFED 4.6-4 |
+ | | | ConnectX-5 | | ConnectX-5 |
+-----------------------+-----------------+-----------------+
| Jump | | DPDK 19.05 | | DPDK 19.02 |
| | | OFED 4.6-4 | | OFED 4.6-4 |
| | | rdma-core 24 | | N/A |
| | | ConnectX-5 | | N/A |
+-----------------------+-----------------+-----------------+
+ | | VLAN | | DPDK 19.11 | | DPDK 19.11 |
+ | | (of_pop_vlan / | | OFED 4.6-4 | | OFED 4.6-4 |
+ | | of_push_vlan / | | ConnectX-5 | | ConnectX-5 |
+ | | of_set_vlan_pcp / | | |
+ | | of_set_vlan_vid) | | |
+ +-----------------------+-----------------+-----------------+
Notes for testpmd
-----------------
git.droids-corp.org / dpdk.git / blobdiff