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doc: add co-existence consideration for qede

[ upstream commit 8e6281f4880565e8ad757fe631afc4c2e060d06a ]

Add and update co-existence considerations for qede PMD

Signed-off-by: Rasesh Mody <rmody@marvell.com>
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Rasesh Mody authored and kevintraynor committed Aug 5, 2019
1 parent 97e379d commit 64f1cd8969645e1af7cb4885ed2489eda4130711
Showing with 22 additions and 3 deletions.
  1. +22 −3 doc/guides/nics/qede.rst
@@ -7,7 +7,7 @@ QEDE Poll Mode Driver

The QEDE poll mode driver library (**librte_pmd_qede**) implements support
for **QLogic FastLinQ QL4xxxx 10G/25G/40G/50G/100G Intelligent Ethernet Adapters (IEA) and Converged Network Adapters (CNA)** family of adapters as well as SR-IOV virtual functions (VF). It is supported on
several standard Linux distros like RHEL7.x, SLES12.x and Ubuntu.
several standard Linux distros like RHEL, SLES, Ubuntu etc.
It is compile-tested under FreeBSD OS.

More information can be found at `QLogic Corporation's Website
@@ -47,8 +47,27 @@ Non-supported Features

Co-existence considerations
---------------------------
- QLogic FastLinQ QL4xxxx CNAs can have both NIC and Storage personalities. However, coexistence with storage protocol drivers (qedi and qedf) is not supported on the same adapter. So storage personality has to be disabled on that adapter when used in DPDK applications.
- For SR-IOV case, qede PMD will be used to bind to SR-IOV VF device and Linux native kernel driver (qede) will be attached to SR-IOV PF.

- QLogic FastLinQ QL4xxxx CNAs support Ethernet, RDMA, iSCSI and FCoE
functionalities. These functionalities are supported using
QLogic Linux kernel drivers qed, qede, qedr, qedi and qedf. DPDK is
supported on these adapters using qede PMD.

- When SR-IOV is not enabled on the adapter,
QLogic Linux kernel drivers (qed, qede, qedr, qedi and qedf) and qede
PMD can’t be attached to different PFs on a given QLogic FastLinQ
QL4xxx adapter.
A given adapter needs to be completely used by DPDK or Linux drivers
Before binding DPDK driver to one or more PFs on the adapter,
please make sure to unbind Linux drivers from all PFs of the adapter.
If there are multiple adapters on the system, one or more adapters
can be used by DPDK driver completely and other adapters can be used
by Linux drivers completely.

- When SR-IOV is enabled on the adapter,
Linux kernel drivers (qed, qede, qedr, qedi and qedf) can be bound
to the PFs of a given adapter and either qede PMD or Linux drivers
(qed and qede) can be bound to the VFs of the adapter.

Supported QLogic Adapters
-------------------------

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