To enable VLAN stripping, two conditions must be met:
the corresponding flag must be set and the appropriate
RX prefix should be requested.
VLAN stripping is supported for ef100 datapath only.
Signed-off-by: Artemii Morozov <artemii.morozov@arknetworks.am>
Reviewed-by: Ivan Malov <ivan.malov@arknetworks.am>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
---
drivers/common/sfc_efx/base/ef10_filter.c | 21 +++++++++++++++++++++
drivers/common/sfc_efx/base/ef10_impl.h | 1 +
drivers/common/sfc_efx/base/efx.h | 9 +++++++++
drivers/common/sfc_efx/base/efx_filter.c | 3 ++-
drivers/common/sfc_efx/base/efx_impl.h | 1 +
drivers/common/sfc_efx/base/efx_rx.c | 17 +++++++++++++++++
drivers/common/sfc_efx/base/rhead_rx.c | 3 +++
7 files changed, 54 insertions(+), 1 deletion(-)
@@ -338,6 +338,11 @@ efx_mcdi_filter_op_add(
FILTER_OP_V3_IN_MATCH_SET_FLAG, 1);
}
+ if (spec->efs_flags & EFX_FILTER_FLAG_VLAN_STRIP) {
+ MCDI_IN_SET_DWORD_FIELD(req, FILTER_OP_V3_IN_MATCH_ACTION_FLAGS,
+ FILTER_OP_V3_IN_MATCH_STRIP_VLAN, 1);
+ }
+
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
@@ -852,6 +857,16 @@ ef10_filter_add_internal(
hash = ef10_filter_hash(spec);
+ /*
+ * VLAN stripping is offload at the device level, and it should be
+ * applied to all filters if it has been applied at least once before.
+ * Knowledge of device level vlan strip offload being enabled comes from
+ * the default RxQ flags, albeit the flag may be set on any queue.
+ * But only default RxQ affects this 'eft_strip_vlan' decision.
+ */
+ if (eftp->eft_strip_vlan)
+ spec->efs_flags |= EFX_FILTER_FLAG_VLAN_STRIP;
+
/*
* FIXME: Add support for inserting filters of different priorities
* and removing lower priority multicast filters (bug 42378)
@@ -2010,6 +2025,9 @@ ef10_filter_reconfigure(
else
filter_flags = 0;
+ if (table->eft_strip_vlan)
+ filter_flags |= EFX_FILTER_FLAG_VLAN_STRIP;
+
/* Mark old filters which may need to be removed */
ef10_filter_mark_old_filters(enp);
@@ -2142,6 +2160,8 @@ ef10_filter_default_rxq_set(
EFSYS_ASSERT(using_rss == B_FALSE);
table->eft_using_rss = B_FALSE;
#endif
+ if (erp->er_flags & EFX_RXQ_FLAG_VLAN_STRIP)
+ table->eft_strip_vlan = B_TRUE;
table->eft_default_rxq = erp;
}
@@ -2153,6 +2173,7 @@ ef10_filter_default_rxq_clear(
table->eft_default_rxq = NULL;
table->eft_using_rss = B_FALSE;
+ table->eft_strip_vlan = B_FALSE;
}
@@ -1286,6 +1286,7 @@ typedef struct ef10_filter_table_s {
ef10_filter_entry_t eft_entry[EFX_EF10_FILTER_TBL_ROWS];
efx_rxq_t *eft_default_rxq;
boolean_t eft_using_rss;
+ boolean_t eft_strip_vlan;
uint32_t eft_unicst_filter_indexes[
EFX_EF10_FILTER_UNICAST_FILTERS_MAX];
uint32_t eft_unicst_filter_count;
@@ -3115,6 +3115,10 @@ typedef enum efx_rxq_type_e {
* Request user flag field in the Rx prefix of a queue.
*/
#define EFX_RXQ_FLAG_USER_FLAG 0x20
+/*
+ * Request vlan tci field in the Rx prefix of a queue.
+ */
+#define EFX_RXQ_FLAG_VLAN_STRIP 0x40
LIBEFX_API
extern __checkReturn efx_rc_t
@@ -3469,6 +3473,11 @@ efx_tx_qdestroy(
#define EFX_FILTER_FLAG_ACTION_FLAG 0x20
/* Set match mark on the received packet */
#define EFX_FILTER_FLAG_ACTION_MARK 0x40
+/*
+ * Request that the first tag in the outer L2 header be stripped
+ * and TCI be indicated in Rx prefix.
+ */
+#define EFX_FILTER_FLAG_VLAN_STRIP 0x80
typedef uint8_t efx_filter_flags_t;
@@ -322,7 +322,8 @@ efx_filter_spec_init_rx(
EFSYS_ASSERT3P(spec, !=, NULL);
EFSYS_ASSERT3P(erp, !=, NULL);
EFSYS_ASSERT((flags & ~(EFX_FILTER_FLAG_RX_RSS |
- EFX_FILTER_FLAG_RX_SCATTER)) == 0);
+ EFX_FILTER_FLAG_RX_SCATTER |
+ EFX_FILTER_FLAG_VLAN_STRIP)) == 0);
memset(spec, 0, sizeof (*spec));
spec->efs_priority = priority;
@@ -1046,6 +1046,7 @@ struct efx_rxq_s {
efsys_mem_t *er_esmp;
efx_evq_rxq_state_t *er_ev_qstate;
efx_rx_prefix_layout_t er_prefix_layout;
+ uint16_t er_flags;
};
#define EFX_RXQ_MAGIC 0x15022005
@@ -925,6 +925,7 @@ efx_rx_qcreate_internal(
erp->er_index = index;
erp->er_mask = ndescs - 1;
erp->er_esmp = esmp;
+ erp->er_flags = 0;
if ((rc = erxop->erxo_qcreate(enp, index, label, type, type_data, esmp,
ndescs, id, flags, eep, erp)) != 0)
@@ -943,11 +944,27 @@ efx_rx_qcreate_internal(
}
}
+ if (flags & EFX_RXQ_FLAG_VLAN_STRIP) {
+ const efx_rx_prefix_layout_t *erplp = &erp->er_prefix_layout;
+ const efx_rx_prefix_field_info_t *vlan_tci_field;
+
+ vlan_tci_field =
+ &erplp->erpl_fields[EFX_RX_PREFIX_FIELD_VLAN_STRIP_TCI];
+ if (vlan_tci_field->erpfi_width_bits == 0) {
+ rc = ENOTSUP;
+ goto fail6;
+ }
+
+ erp->er_flags |= EFX_RXQ_FLAG_VLAN_STRIP;
+ }
+
enp->en_rx_qcount++;
*erpp = erp;
return (0);
+fail6:
+ EFSYS_PROBE(fail6);
fail5:
EFSYS_PROBE(fail5);
@@ -640,6 +640,9 @@ rhead_rx_qcreate(
if (flags & EFX_RXQ_FLAG_USER_FLAG)
fields_mask |= 1U << EFX_RX_PREFIX_FIELD_USER_FLAG;
+ if (flags & EFX_RXQ_FLAG_VLAN_STRIP)
+ fields_mask |= 1U << EFX_RX_PREFIX_FIELD_VLAN_STRIP_TCI;
+
/*
* LENGTH is required in EF100 host interface, as receive events
* do not include the packet length.