1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 Intel Corporation.
7 The ice PMD (librte_pmd_ice) provides poll mode driver support for
8 10/25/50/100 Gbps IntelĀ® Ethernet 810 Series Network Adapters based on
9 the Intel Ethernet Controller E810.
15 - Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>` to setup the basic DPDK environment.
17 - To get better performance on Intel platforms, please follow the "How to get best performance with NICs on Intel platforms"
18 section of the :ref:`Getting Started Guide for Linux <linux_gsg>`.
20 Pre-Installation Configuration
21 ------------------------------
26 The following options can be modified in the ``config`` file.
27 Please note that enabling debugging options may affect system performance.
29 - ``CONFIG_RTE_LIBRTE_ICE_PMD`` (default ``y``)
31 Toggle compilation of the ``librte_pmd_ice`` driver.
33 - ``CONFIG_RTE_LIBRTE_ICE_DEBUG_*`` (default ``n``)
35 Toggle display of generic debugging messages.
37 - ``CONFIG_RTE_LIBRTE_ICE_16BYTE_RX_DESC`` (default ``n``)
39 Toggle to use a 16-byte RX descriptor, by default the RX descriptor is 32 byte.
41 Runtime Config Options
42 ~~~~~~~~~~~~~~~~~~~~~~
44 - ``Safe Mode Support`` (default ``0``)
46 If driver failed to load OS package, by default driver's initialization failed.
47 But if user intend to use the device without OS package, user can take ``devargs``
48 parameter ``safe-mode-support``, for example::
50 -w 80:00.0,safe-mode-support=1
52 Then the driver will be initialized successfully and the device will enter Safe Mode.
53 NOTE: In Safe mode, only very limited features are available, features like RSS,
54 checksum, fdir, tunneling ... are all disabled.
56 - ``Generic Flow Pipeline Mode Support`` (default ``0``)
58 In pipeline mode, a flow can be set at one specific stage by setting parameter
59 ``priority``. Currently, we support two stages: priority = 0 or !0. Flows with
60 priority 0 located at the first pipeline stage which typically be used as a firewall
61 to drop the packet on a blacklist(we called it permission stage). At this stage,
62 flow rules are created for the device's exact match engine: switch. Flows with priority
63 !0 located at the second stage, typically packets are classified here and be steered to
64 specific queue or queue group (we called it distribution stage), At this stage, flow
65 rules are created for device's flow director engine.
66 For none-pipeline mode, ``priority`` is ignored, a flow rule can be created as a flow director
67 rule or a switch rule depends on its pattern/action and the resource allocation situation,
68 all flows are virtually at the same pipeline stage.
69 By default, generic flow API is enabled in none-pipeline mode, user can choose to
70 use pipeline mode by setting ``devargs`` parameter ``pipeline-mode-support``,
73 -w 80:00.0,pipeline-mode-support=1
75 - ``Protocol extraction for per queue``
77 Configure the RX queues to do protocol extraction into mbuf for protocol
78 handling acceleration, like checking the TCP SYN packets quickly.
80 The argument format is::
82 -w 18:00.0,proto_xtr=<queues:protocol>[<queues:protocol>...]
83 -w 18:00.0,proto_xtr=<protocol>
85 Queues are grouped by ``(`` and ``)`` within the group. The ``-`` character
86 is used as a range separator and ``,`` is used as a single number separator.
87 The grouping ``()`` can be omitted for single element group. If no queues are
88 specified, PMD will use this protocol extraction type for all queues.
90 Protocol is : ``vlan, ipv4, ipv6, ipv6_flow, tcp, ip_offset``.
92 .. code-block:: console
94 testpmd -w 18:00.0,proto_xtr='[(1,2-3,8-9):tcp,10-13:vlan]'
96 This setting means queues 1, 2-3, 8-9 are TCP extraction, queues 10-13 are
97 VLAN extraction, other queues run with no protocol extraction.
99 .. code-block:: console
101 testpmd -w 18:00.0,proto_xtr=vlan,proto_xtr='[(1,2-3,8-9):tcp,10-23:ipv6]'
103 This setting means queues 1, 2-3, 8-9 are TCP extraction, queues 10-23 are
104 IPv6 extraction, other queues use the default VLAN extraction.
106 The extraction metadata is copied into the registered dynamic mbuf field, and
107 the related dynamic mbuf flags is set.
109 .. table:: Protocol extraction : ``vlan``
111 +----------------------------+----------------------------+
113 +======+===+=================+======+===+=================+
114 | PCP | D | VID | PCP | D | VID |
115 +------+---+-----------------+------+---+-----------------+
117 VLAN1 - single or EVLAN (first for QinQ).
119 VLAN2 - C-VLAN (second for QinQ).
121 .. table:: Protocol extraction : ``ipv4``
123 +----------------------------+----------------------------+
125 +======+=======+=============+==============+=============+
126 | Ver |Hdr Len| ToS | TTL | Protocol |
127 +------+-------+-------------+--------------+-------------+
129 IPHDR1 - IPv4 header word 4, "TTL" and "Protocol" fields.
131 IPHDR2 - IPv4 header word 0, "Ver", "Hdr Len" and "Type of Service" fields.
133 .. table:: Protocol extraction : ``ipv6``
135 +----------------------------+----------------------------+
137 +=====+=============+========+=============+==============+
138 | Ver |Traffic class| Flow | Next Header | Hop Limit |
139 +-----+-------------+--------+-------------+--------------+
141 IPHDR1 - IPv6 header word 3, "Next Header" and "Hop Limit" fields.
143 IPHDR2 - IPv6 header word 0, "Ver", "Traffic class" and high 4 bits of
146 .. table:: Protocol extraction : ``ipv6_flow``
148 +----------------------------+----------------------------+
150 +=====+=============+========+============================+
151 | Ver |Traffic class| Flow Label |
152 +-----+-------------+-------------------------------------+
154 IPHDR1 - IPv6 header word 1, 16 low bits of the "Flow Label" field.
156 IPHDR2 - IPv6 header word 0, "Ver", "Traffic class" and high 4 bits of
159 .. table:: Protocol extraction : ``tcp``
161 +----------------------------+----------------------------+
162 | TCPHDR2 | TCPHDR1 |
163 +============================+======+======+==============+
164 | Reserved |Offset| RSV | Flags |
165 +----------------------------+------+------+--------------+
167 TCPHDR1 - TCP header word 6, "Data Offset" and "Flags" fields.
171 .. table:: Protocol extraction : ``ip_offset``
173 +----------------------------+----------------------------+
175 +============================+============================+
176 | IPv6 HDR Offset | IPv4 HDR Offset |
177 +----------------------------+----------------------------+
179 IPHDR1 - Outer/Single IPv4 Header offset.
181 IPHDR2 - Outer/Single IPv6 Header offset.
183 Use ``rte_net_ice_dynf_proto_xtr_metadata_get`` to access the protocol
184 extraction metadata, and use ``RTE_PKT_RX_DYNF_PROTO_XTR_*`` to get the
185 metadata type of ``struct rte_mbuf::ol_flags``.
187 The ``rte_net_ice_dump_proto_xtr_metadata`` routine shows how to
188 access the protocol extraction result in ``struct rte_mbuf``.
190 Driver compilation and testing
191 ------------------------------
193 Refer to the document :ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
202 Vector PMD for RX and TX path are selected automatically. The paths
203 are chosen based on 2 conditions.
206 On the X86 platform, the driver checks if the CPU supports AVX2.
207 If it's supported, AVX2 paths will be chosen. If not, SSE is chosen.
209 - ``Offload features``
210 The supported HW offload features are described in the document ice_vec.ini.
211 If any not supported features are used, ICE vector PMD is disabled and the
212 normal paths are chosen.
214 Malicious driver detection (MDD)
215 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
217 It's not appropriate to send a packet, if this packet's destination MAC address
218 is just this port's MAC address. If SW tries to send such packets, HW will
219 report a MDD event and drop the packets.
221 The APPs based on DPDK should avoid providing such packets.
223 Device Config Function (DCF)
224 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
226 This section demonstrates ICE DCF PMD, which shares the core module with ICE
229 A DCF (Device Config Function) PMD bounds to the device's trusted VF with ID 0,
230 it can act as a sole controlling entity to exercise advance functionality (such
231 as switch, ACL) for the rest VFs.
233 The DCF PMD needs to advertise and acquire DCF capability which allows DCF to
234 send AdminQ commands that it would like to execute over to the PF and receive
235 responses for the same from PF.
239 .. figure:: img/ice_dcf.*
241 DCF Communication flow.
245 echo 4 > /sys/bus/pci/devices/0000\:18\:00.0/sriov_numvfs
247 #. Enable the VF0 trust on::
249 ip link set dev enp24s0f0 vf 0 trust on
251 #. Bind the VF0, and run testpmd with 'cap=dcf' devarg::
253 testpmd -l 22-25 -n 4 -w 18:01.0,cap=dcf -- -i
255 #. Monitor the VF2 interface network traffic::
257 tcpdump -e -nn -i enp24s1f2
259 #. Create one flow to redirect the traffic to VF2 by DCF::
261 flow create 0 priority 0 ingress pattern eth / ipv4 src is 192.168.0.2 \
262 dst is 192.168.0.3 / end actions vf id 2 / end
264 #. Send the packet, and it should be displayed on tcpdump::
266 sendp(Ether(src='3c:fd:fe:aa:bb:78', dst='00:00:00:01:02:03')/IP(src=' \
267 192.168.0.2', dst="192.168.0.3")/TCP(flags='S')/Raw(load='XXXXXXXXXX'), \
268 iface="enp24s0f0", count=10)
270 Sample Application Notes
271 ------------------------
276 Vlan filter only works when Promiscuous mode is off.
278 To start ``testpmd``, and add vlan 10 to port 0:
280 .. code-block:: console
282 ./app/testpmd -l 0-15 -n 4 -- -i
285 testpmd> rx_vlan add 10 0
287 Limitations or Known issues
288 ---------------------------
290 The Intel E810 requires a programmable pipeline package be downloaded
291 by the driver to support normal operations. The E810 has a limited
292 functionality built in to allow PXE boot and other use cases, but the
293 driver must download a package file during the driver initialization
296 The default DDP package file name is ice.pkg. For a specific NIC, the
297 DDP package supposed to be loaded can have a filename: ice-xxxxxx.pkg,
298 where 'xxxxxx' is the 64-bit PCIe Device Serial Number of the NIC. For
299 example, if the NIC's device serial number is 00-CC-BB-FF-FF-AA-05-68,
300 the device-specific DDP package filename is ice-00ccbbffffaa0568.pkg
301 (in hex and all low case). During initialization, the driver searches
302 in the following paths in order: /lib/firmware/updates/intel/ice/ddp
303 and /lib/firmware/intel/ice/ddp. The corresponding device-specific DDP
304 package will be downloaded first if the file exists. If not, then the
305 driver tries to load the default package. The type of loaded package
306 is stored in ``ice_adapter->active_pkg_type``.
308 A symbolic link to the DDP package file is also ok. The same package
309 file is used by both the kernel driver and the DPDK PMD.