- **CONFIG_RTE_LIBRTE_ENIC_PMD** (default y): Enables or disables inclusion
of the ENIC PMD driver in the DPDK compilation.
- - **CONFIG_RTE_LIBRTE_ENIC_DEBUG** (default n): Enables or disables debug
- logging within the ENIC PMD driver.
-
- - **CONFIG_RTE_LIBRTE_ENIC_DEBUG_FLOW** (default n): Enables or disables flow
- API related debug logging within the ENIC PMD driver.
-
- **vNIC Configuration Parameters**
- **Number of Queues**
- **Interrupts**
- Only one interrupt per vNIC interface should be configured in the UCS
+ At least one interrupt per vNIC interface should be configured in the UCS
manager regardless of the number receive/transmit queues. The ENIC PMD
uses this interrupt to get information about link status and errors
in the fast path.
+ In addition to the interrupt for link status and errors, when using Rx queue
+ interrupts, increase the number of configured interrupts so that there is at
+ least one interrupt for each Rx queue. For example, if the app uses 3 Rx
+ queues and wants to use per-queue interrupts, configure 4 (3 + 1) interrupts.
+
.. _enic-flow-director:
Flow director support
- Actions: queue and void
- Selectors: 'is'
-- **1300 series VICS with advanced filters disabled**
+- **1300 and later series VICS with advanced filters disabled**
With advanced filters disabled, an IPv4 or IPv6 item must be specified
in the pattern.
- Selectors: 'is', 'spec' and 'mask'. 'last' is not supported
- In total, up to 64 bytes of mask is allowed across all headers
-- **1300 series VICS with advanced filters enabled**
+- **1300 and later series VICS with advanced filters enabled**
- Attributes: ingress
- Items: eth, ipv4, ipv6, udp, tcp, vxlan, inner eth, ipv4, ipv6, udp, tcp
- - Actions: queue, mark, flag and void
+ - Actions: queue, mark, drop, flag and void
- Selectors: 'is', 'spec' and 'mask'. 'last' is not supported
- In total, up to 64 bytes of mask is allowed across all headers
were added. Since there currently is no grouping or priority support,
'catch-all' filters should be added last.
+- **Statistics**
+
+ - ``rx_good_bytes`` (ibytes) always includes VLAN header (4B) and CRC bytes (4B).
+ This behavior applies to 1300 and older series VIC adapters.
+ 1400 series VICs do not count CRC bytes, and count VLAN header only when VLAN
+ stripping is disabled.
+ - When the NIC drops a packet because the Rx queue has no free buffers,
+ ``rx_good_bytes`` still increments by 4B if the packet is not VLAN tagged or
+ VLAN stripping is disabled, or by 8B if the packet is VLAN tagged and stripping
+ is enabled.
+ This behavior applies to 1300 and older series VIC adapters. 1400 series VICs
+ do not increment this byte counter when packets are dropped.
+
+- **RSS Hashing**
+
+ - Hardware enables and disables UDP and TCP RSS hashing together. The driver
+ cannot control UDP and TCP hashing individually.
+
How to build the suite
----------------------
ENIC PMD supports all recent generations of Cisco VIC adapters including:
-- VIC 1280
-- VIC 1240
-- VIC 1225
-- VIC 1285
-- VIC 1225T
-- VIC 1227
-- VIC 1227T
-- VIC 1380
-- VIC 1340
-- VIC 1385
-- VIC 1387
+- VIC 1200 series
+- VIC 1300 series
+- VIC 1400 series
Supported Operating Systems
---------------------------
- VLAN filtering (supported via UCSM/CIMC only)
- Execution of application by unprivileged system users
- IPV4, IPV6 and TCP RSS hashing
+- UDP hashing (1400 series and later adapters)
- Scattered Rx
- MTU update
- SR-IOV on UCS managed servers connected to Fabric Interconnects
- VLAN based flow direction
- Non-IPV4 flow direction
- Setting of extended VLAN
-- UDP RSS hashing
- MTU update only works if Scattered Rx mode is disabled
+- Maximum receive packet length is ignored if Scattered Rx mode is used
Prerequisites
-------------
git.droids-corp.org / dpdk.git / blobdiff