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net/enic: support VXLAN decap action combined with VLAN pop

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Flow Manager (flowman) provides DECAP_STRIP operation which
decapsulates VXLAN header and then removes VLAN header from the inner
packet. Use this operation to support vxlan_decap followed by
of_pop_vlan.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
This commit is contained in:
Hyong Youb Kim 2020-09-09 07:00:06 -07:00 committed by Ferruh Yigit
parent d52054e70f
commit a4ab862e99
2 changed files with 30 additions and 1 deletions
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1
doc/guides/rel_notes/release_20_11.rst
View File

@ -60,6 +60,7 @@ New Features
* Added support for VF representors with single-queue Tx/Rx and flow API
* Added support for egress PORT_ID action
* Added support for non-zero priorities for group 0 flows
* Added support for VXLAN decap combined with VLAN pop
* **Extended flow-perf application.**

30
drivers/net/enic/enic_fm_flow.c
View File

@ -923,6 +923,20 @@ enic_fm_append_action_op(struct enic_flowman *fm,
return 0;
}
static struct fm_action_op *
find_prev_action_op(struct enic_flowman *fm, uint32_t opcode)
{
struct fm_action_op *op;
int i;
for (i = 0; i < fm->action_op_count; i++) {
op = &fm->action.fma_action_ops[i];
if (op->fa_op == opcode)
return op;
}
return NULL;
}
/* NIC requires that 1st steer appear before decap.
* Correct example: steer, decap, steer, steer, ...
*/
@ -938,7 +952,8 @@ enic_fm_reorder_action_op(struct enic_flowman *fm)
steer = NULL;
decap = NULL;
while (op->fa_op != FMOP_END) {
if (!decap && op->fa_op == FMOP_DECAP_NOSTRIP)
if (!decap && (op->fa_op == FMOP_DECAP_NOSTRIP ||
op->fa_op == FMOP_DECAP_STRIP))
decap = op;
else if (!steer && op->fa_op == FMOP_RQ_STEER)
steer = op;
@ -1472,6 +1487,19 @@ enic_fm_copy_action(struct enic_flowman *fm,
break;
}
case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN: {
struct fm_action_op *decap;
/*
* If decap-nostrip appears before pop vlan, this pop
* applies to the inner packet vlan. Turn it into
* decap-strip.
*/
decap = find_prev_action_op(fm, FMOP_DECAP_NOSTRIP);
if (decap) {
ENICPMD_LOG(DEBUG, "pop-vlan inner: decap-nostrip => decap-strip");
decap->fa_op = FMOP_DECAP_STRIP;
break;
}
memset(&fm_op, 0, sizeof(fm_op));
fm_op.fa_op = FMOP_POP_VLAN;
ret = enic_fm_append_action_op(fm, &fm_op, error);