[dpdk-dev] [PATCH v4 07/10] net/sfc: override match fields in tunnel offload jump rules

[Ivan Malov <ivan.malov@oktetlabs.ru>]

The current HW/FW doesn't allow to match on MAC addresses in outer rules.
One day this will change for sure, but right now a workaround is needed.

Match on VLAN presence in outer rules is also unsupported. Ignore it.

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
---
 drivers/net/sfc/sfc_mae.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/net/sfc/sfc_mae.c b/drivers/net/sfc/sfc_mae.c
index 2515b9a80a..c972c2e3f2 100644
--- a/drivers/net/sfc/sfc_mae.c
+++ b/drivers/net/sfc/sfc_mae.c
@@ -1525,6 +1525,7 @@ sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item,
 			    struct rte_flow_error *error)
 {
 	struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
+	struct rte_flow_item_eth override_mask;
 	struct rte_flow_item_eth supp_mask;
 	const uint8_t *spec = NULL;
 	const uint8_t *mask = NULL;
@@ -1542,6 +1543,22 @@ sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item,
 	if (rc != 0)
 		return rc;
 
+	if (ctx_mae->ft_rule_type == SFC_FT_RULE_JUMP && mask != NULL) {
+		/*
+		 * The HW/FW hasn't got support for match on MAC addresses in
+		 * outer rules yet (this will change). Match on VLAN presence
+		 * isn't supported either. Ignore these match criteria.
+		 */
+		memcpy(&override_mask, mask, sizeof(override_mask));
+		memset(&override_mask.hdr.dst_addr, 0,
+		       sizeof(override_mask.hdr.dst_addr));
+		memset(&override_mask.hdr.src_addr, 0,
+		       sizeof(override_mask.hdr.src_addr));
+		override_mask.has_vlan = 0;
+
+		mask = (const uint8_t *)&override_mask;
+	}
+
 	if (spec != NULL) {
 		struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
 		struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
-- 
2.20.1