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| author | Vladimir Oltean <vladimir.oltean@nxp.com> | 2022-03-16 22:41:42 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-17 17:42:47 -0700 |
| commit | f2a0e216bee5d95e2c2d916a8815a659cd3703c2 (patch) | |
| tree | 15be089d2da299b7f687eef2c84f2a05d6667b8e /drivers/net/ethernet/mscc/ocelot_flower.c | |
| parent | c3d427eac90f8788f510d8d26931afd117bb6406 (diff) | |
| download | linux-f2a0e216bee5d95e2c2d916a8815a659cd3703c2.tar.bz2 | |
net: mscc: ocelot: offload per-flow mirroring using tc-mirred and VCAP IS2
Per-flow mirroring with the VCAP IS2 TCAM (in itself handled as an
offload for tc-flower) is done by setting the MIRROR_ENA bit from the
action vector of the filter. The packet is mirrored to the port mask
configured in the ANA:ANA:MIRRORPORTS register (the same port mask as
the destinations for port-based mirroring).
Functionality was tested with:
tc qdisc add dev swp3 clsact
tc filter add dev swp3 ingress protocol ip \
flower skip_sw ip_proto icmp \
action mirred egress mirror dev swp1
and pinging through swp3, while seeing that the ICMP replies are
mirrored towards swp1.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot_flower.c')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_flower.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c index bd9525867caa..03b5e59d033e 100644 --- a/drivers/net/ethernet/mscc/ocelot_flower.c +++ b/drivers/net/ethernet/mscc/ocelot_flower.c @@ -359,6 +359,27 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port, filter->action.port_mask = BIT(egress_port); filter->type = OCELOT_VCAP_FILTER_OFFLOAD; break; + case FLOW_ACTION_MIRRED: + if (filter->block_id != VCAP_IS2) { + NL_SET_ERR_MSG_MOD(extack, + "Mirror action can only be offloaded to VCAP IS2"); + return -EOPNOTSUPP; + } + if (filter->goto_target != -1) { + NL_SET_ERR_MSG_MOD(extack, + "Last action must be GOTO"); + return -EOPNOTSUPP; + } + egress_port = ocelot->ops->netdev_to_port(a->dev); + if (egress_port < 0) { + NL_SET_ERR_MSG_MOD(extack, + "Destination not an ocelot port"); + return -EOPNOTSUPP; + } + filter->egress_port.value = egress_port; + filter->action.mirror_ena = true; + filter->type = OCELOT_VCAP_FILTER_OFFLOAD; + break; case FLOW_ACTION_VLAN_POP: if (filter->block_id != VCAP_IS1) { NL_SET_ERR_MSG_MOD(extack, |