[dpdk-dev] [PATCH 07/15] net/enic: enable limited PASSTHRU flow action
Hyong Youb Kim
hyonkim at cisco.com
Thu Feb 28 08:03:09 CET 2019
Some apps like VPP use PASSTHRU+MARK flow rules to offload packet
matching to the NIC. Just like MARK+RSS used by OVS-DPDK and others,
PASSTHRU+MARK is used to "mark and then receive normally". Recent VIC
adapters support such flow rules, so enable PASSTHRU for this limited
use case.
Signed-off-by: Hyong Youb Kim <hyonkim at cisco.com>
---
drivers/net/enic/enic_flow.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/net/enic/enic_flow.c b/drivers/net/enic/enic_flow.c
index 0f6b6b930..c6ed9e1b9 100644
--- a/drivers/net/enic/enic_flow.c
+++ b/drivers/net/enic/enic_flow.c
@@ -283,6 +283,7 @@ static const enum rte_flow_action_type enic_supported_actions_v2_id[] = {
RTE_FLOW_ACTION_TYPE_MARK,
RTE_FLOW_ACTION_TYPE_FLAG,
RTE_FLOW_ACTION_TYPE_RSS,
+ RTE_FLOW_ACTION_TYPE_PASSTHRU,
RTE_FLOW_ACTION_TYPE_END,
};
@@ -292,6 +293,7 @@ static const enum rte_flow_action_type enic_supported_actions_v2_drop[] = {
RTE_FLOW_ACTION_TYPE_FLAG,
RTE_FLOW_ACTION_TYPE_DROP,
RTE_FLOW_ACTION_TYPE_RSS,
+ RTE_FLOW_ACTION_TYPE_PASSTHRU,
RTE_FLOW_ACTION_TYPE_END,
};
@@ -302,6 +304,7 @@ static const enum rte_flow_action_type enic_supported_actions_v2_count[] = {
RTE_FLOW_ACTION_TYPE_DROP,
RTE_FLOW_ACTION_TYPE_COUNT,
RTE_FLOW_ACTION_TYPE_RSS,
+ RTE_FLOW_ACTION_TYPE_PASSTHRU,
RTE_FLOW_ACTION_TYPE_END,
};
@@ -1072,6 +1075,7 @@ enic_copy_action_v2(struct enic *enic,
{
enum { FATE = 1, MARK = 2, };
uint32_t overlap = 0;
+ bool passthru = false;
FLOW_TRACE();
@@ -1164,6 +1168,19 @@ enic_copy_action_v2(struct enic *enic,
overlap |= FATE;
break;
}
+ case RTE_FLOW_ACTION_TYPE_PASSTHRU: {
+ /*
+ * Like RSS above, PASSTHRU + MARK may be used to
+ * "mark and then receive normally". MARK usually comes
+ * after PASSTHRU, so remember we have seen passthru
+ * and check for mark later.
+ */
+ if (overlap & FATE)
+ return ENOTSUP;
+ overlap |= FATE;
+ passthru = true;
+ break;
+ }
case RTE_FLOW_ACTION_TYPE_VOID:
continue;
default:
@@ -1171,6 +1188,9 @@ enic_copy_action_v2(struct enic *enic,
break;
}
}
+ /* Only PASSTHRU + MARK is allowed */
+ if (passthru && !(overlap & MARK))
+ return ENOTSUP;
if (!(overlap & FATE))
return ENOTSUP;
enic_action->type = FILTER_ACTION_V2;
--
2.16.2
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