diff options
| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-02-16 16:30:14 +0200 |
|---|---|---|
| committer | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-05-04 15:24:54 +0200 |
| commit | 17fd01b130471c5c30d2508b7ddca7cb60e233de (patch) | |
| tree | 3f671022f99acf773593a2dde4445d42ae9a83d5 /net/switchdev/switchdev.c | |
| parent | f4fe72b9cf61415ae866d3f5c2d8434e27702de0 (diff) | |
net: dsa: tag_ocelot_8021q: calculate TX checksum in software for deferred packets
DSA inherits NETIF_F_CSUM_MASK from master->vlan_features, and the
expectation is that TX checksumming is offloaded and not done in
software.
Normally the DSA master takes care of this, but packets handled by
ocelot_defer_xmit() are a very special exception, because they are
actually injected into the switch through register-based MMIO. So the
DSA master is not involved at all for these packets => no one calculates
the checksum.
This allows PTP over UDP to work using the ocelot-8021q tagging
protocol.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 29940ce32a2da2f3857d5fc459c6df6e47adb67e)
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions