[PATCH v4 6/6] doc: announce VF support of AMD Solarflare X45xx family NICs

[Ivan Malov <ivan.malov@arknetworks.am>]

The Solarflare PMD has been updated to let the user attach to the
X4 VFs (created by the PF that is attached either to the DPDK
application or to the Solarflare Linux net driver).

Signed-off-by: Ivan Malov <ivan.malov@arknetworks.am>
Reviewed-by: Viacheslav Galaktionov <viacheslav.galaktionov@arknetworks.am>
---
 doc/guides/nics/sfc_efx.rst            | 23 +++++++++++++++++++++++
 doc/guides/rel_notes/release_26_11.rst |  4 ++++
 2 files changed, 27 insertions(+)

diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index ae5ef25715..c29719ed7f 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -113,6 +113,8 @@ SFC EFX PMD has support for:
 
 - SR-IOV PF
 
+- SR-IOV VF
+
 - Port representors (see :ref: switch_representation)
 
 - VLAN stripping (if running firmware variant supports it)
@@ -157,6 +159,27 @@ Another limitation of a equal stride super-buffer mode, imposed by the
 firmware, is that it allows for a single RSS context.
 
 
+SR-IOV VF
+~~~~~~~~~
+
+X4 VF support requires management controller firmware version 1.4.0.8 or later.
+
+When the PMD operates as a VF, the following restrictions apply:
+
+- Link speed, FEC mode and lane count are accepted without
+  error but have no physical effect on the link, which is
+  exclusively under PF control.
+
+- Disabling flow control auto-negotiation is not supported.
+
+- FCS stripping cannot be disabled.
+
+- Link status change events are not delivered.
+
+- Periodic MAC statistics DMA is not available; statistics are
+  collected via one-shot uploads instead.
+
+
 Tunnels support
 ---------------
 
diff --git a/doc/guides/rel_notes/release_26_11.rst b/doc/guides/rel_notes/release_26_11.rst
index 474479babc..a59d2fc8dc 100644
--- a/doc/guides/rel_notes/release_26_11.rst
+++ b/doc/guides/rel_notes/release_26_11.rst
@@ -61,6 +61,10 @@ New Features
     ``use_cni`` or ``use_pinned_map`` is set without ``dp_path``.
     See :doc:`../nics/af_xdp` for more details.
 
+* **Updated Solarflare network driver.**
+
+  * Added VF support on AMD Solarflare X45xx adapters.
+
 
 Removed Items
 -------------
-- 
2.47.3