1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index 98391b00..46ea2cf4 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -40,6 +40,7 @@
 #include <rte_bus_pci.h>
 #include <rte_ethdev.h>
 #include <rte_ethdev_pci.h>
+#include <rte_kvargs.h>
 #include <rte_string_fns.h>
 
 #include "vnic_intr.h"
@@ -66,6 +67,8 @@ static const struct rte_pci_id pci_id_enic_map[] = {
 	{.vendor_id = 0, /* sentinel */},
 };
 
+#define ENIC_DEVARG_IG_VLAN_REWRITE "ig-vlan-rewrite"
+
 static int
 enicpmd_fdir_ctrl_func(struct rte_eth_dev *eth_dev,
 			enum rte_filter_op filter_op, void *arg)
@@ -644,6 +647,64 @@ static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 	.filter_ctrl          = enicpmd_dev_filter_ctrl,
 };
 
+static int enic_parse_ig_vlan_rewrite(__rte_unused const char *key,
+				      const char *value,
+				      void *opaque)
+{
+	struct enic *enic;
+
+	enic = (struct enic *)opaque;
+	if (strcmp(value, "trunk") == 0) {
+		/* Trunk mode: always tag */
+		enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK;
+	} else if (strcmp(value, "untag") == 0) {
+		/* Untag default VLAN mode: untag if VLAN = default VLAN */
+		enic->ig_vlan_rewrite_mode =
+			IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN;
+	} else if (strcmp(value, "priority") == 0) {
+		/*
+		 * Priority-tag default VLAN mode: priority tag (VLAN header
+		 * with ID=0) if VLAN = default
+		 */
+		enic->ig_vlan_rewrite_mode =
+			IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN;
+	} else if (strcmp(value, "pass") == 0) {
+		/* Pass through mode: do not touch tags */
+		enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
+	} else {
+		dev_err(enic, "Invalid value for " ENIC_DEVARG_IG_VLAN_REWRITE
+			": expected=trunk|untag|priority|pass given=%s\n",
+			value);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int enic_check_devargs(struct rte_eth_dev *dev)
+{
+	static const char *const valid_keys[] = {
+		ENIC_DEVARG_IG_VLAN_REWRITE,
+		NULL};
+	struct enic *enic = pmd_priv(dev);
+	struct rte_kvargs *kvlist;
+
+	ENICPMD_FUNC_TRACE();
+
+	enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
+	if (!dev->device->devargs)
+		return 0;
+	kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
+	if (!kvlist)
+		return -EINVAL;
+	if (rte_kvargs_process(kvlist, ENIC_DEVARG_IG_VLAN_REWRITE,
+			       enic_parse_ig_vlan_rewrite, enic) < 0) {
+		rte_kvargs_free(kvlist);
+		return -EINVAL;
+	}
+	rte_kvargs_free(kvlist);
+	return 0;
+}
+
 struct enic *enicpmd_list_head = NULL;
 /* Initialize the driver
  * It returns 0 on success.
@@ -653,6 +714,7 @@ static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 	struct rte_pci_device *pdev;
 	struct rte_pci_addr *addr;
 	struct enic *enic = pmd_priv(eth_dev);
+	int err;
 
 	ENICPMD_FUNC_TRACE();
 
@@ -670,6 +732,9 @@ static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 	snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 		addr->domain, addr->bus, addr->devid, addr->function);
 
+	err = enic_check_devargs(eth_dev);
+	if (err)
+		return err;
 	return enic_probe(enic);
 }
 
@@ -695,3 +760,5 @@ static struct rte_pci_driver rte_enic_pmd = {
 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd);
 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
 RTE_PMD_REGISTER_KMOD_DEP(net_enic, "* igb_uio | uio_pci_generic | vfio-pci");
+RTE_PMD_REGISTER_PARAM_STRING(net_enic,
+	ENIC_DEVARG_IG_VLAN_REWRITE "=trunk|untag|priority|pass");