X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=doc%2Fguides%2Fnics%2Fbnx2x.rst;h=ab90d8ae5eb7d10938b6712b12c98a08731f5c35;hb=1736219b3c5737c943620c22121b361e35b18d0d;hp=67d765af84d785d02dcf8822da5f3c0e9062c62d;hpb=0cb4150f82ff77e1c74826ae425f36388d9172fb;p=dpdk.git

diff --git a/doc/guides/nics/bnx2x.rst b/doc/guides/nics/bnx2x.rst
index 67d765af84..ab90d8ae5e 100644
--- a/doc/guides/nics/bnx2x.rst
+++ b/doc/guides/nics/bnx2x.rst
@@ -108,6 +108,23 @@ Driver compilation and testing
 Refer to the document :ref:`compiling and testing a PMD for a NIC <pmd_build_and_test>`
 for details.
 
+Jumbo: Limitation
+-----------------
+
+Rx descriptor limit for number of segments per MTU is set to 1.
+PMD doesn't support Jumbo Rx scatter gather. Some applciations can
+adjust mbuf_size based on this param and max_pkt_len.
+
+For others, PMD detects the condition where Rx packet length cannot
+be held by configured mbuf size and logs the message.
+
+Example output:
+
+   .. code-block:: console
+
+      [...]
+      [bnx2x_recv_pkts:397(04:00.0:dpdk-port-0)] mbuf size 2048 is not enough to hold Rx packet length more than 2046
+
 SR-IOV: Prerequisites and sample Application Notes
 --------------------------------------------------