doc: add systems support in tap guide

Signed-off-by: Ophir Munk <ophirmu@mellanox.com>
Acked-by: Pascal Mazon <pascal.mazon@6wind.com>
Acked-by: John McNamara <john.mcnamara@intel.com>

diff --git a/doc/guides/nics/tap.rst b/doc/guides/nics/tap.rst
index b69ee67..ea61be3 100644 (file)
--- a/doc/guides/nics/tap.rst
+++ b/doc/guides/nics/tap.rst
@@ -100,7 +100,7 @@ Supported actions:
 - DROP
 - QUEUE
 - PASSTHRU
-- RSS
+- RSS (requires kernel 4.9)
 
 It is generally not possible to provide a "last" item. However, if the "last"
 item, once masked, is identical to the masked spec, then it is supported.
@@ -241,3 +241,23 @@ Please refer to ``iproute2`` package file ``lib/bpf.c`` function
 An example utility for eBPF instruction generation in the format of C arrays will
 be added in next releases
 
+Systems supporting flow API
+---------------------------
+
+- "tc flower" classifier requires linux kernel above 4.2
+- eBPF/RSS requires linux kernel above 4.9
+
++--------------------+-----------------------+
+| RH7.3              | No flow rule support  |
++--------------------+-----------------------+
+| RH7.4              | No RSS action support |
++--------------------+-----------------------+
+| RH7.5              | No RSS action support |
++--------------------+-----------------------+
+| SLES 15,           | No limitation         |
+| kernel 4.12        |                       |
++--------------------+-----------------------+
+| Azure Ubuntu 16.04,| No limitation         |
+| kernel 4.13        |                       |
++--------------------+-----------------------+
+