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Diffstat (limited to 'doc/guides/nics/tap.rst')
| -rw-r--r-- | doc/guides/nics/tap.rst | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/guides/nics/tap.rst b/doc/guides/nics/tap.rst index f3ee95d2..04086b11 100644 --- a/doc/guides/nics/tap.rst +++ b/doc/guides/nics/tap.rst @@ -113,7 +113,14 @@ Flow API support ---------------- The tap PMD supports major flow API pattern items and actions, when running on -linux kernels above 4.2 ("Flower" classifier required). Supported items: +linux kernels above 4.2 ("Flower" classifier required). +The kernel support can be checked with this command:: + + zcat /proc/config.gz | ( grep 'CLS_FLOWER=' || echo 'not supported' ) | + tee -a /dev/stderr | grep -q '=m' && + lsmod | ( grep cls_flower || echo 'try modprobe cls_flower' ) + +Supported items: - eth: src and dst (with variable masks), and eth_type (0xffff mask). - vlan: vid, pcp, tpid, but not eid. (requires kernel 4.9) |