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authorHyong Youb Kim <hyonkim@cisco.com>2018-06-29 02:29:35 -0700
committerFerruh Yigit <ferruh.yigit@intel.com>2018-07-03 01:54:15 +0200
commite39c2756e21ad50d5c7e119bb82732ef49af8ef7 (patch)
tree360d8ee9f4567d5e380f7c5c0122c04f894dfb76 /drivers/net/enic
parent9466a38d38db69f3c59406cff2ea8cf3d4665aa3 (diff)
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net/enic: add devarg to specify ingress VLAN rewrite mode
Add a new devarg "ig-vlan-rewrite" to allow the user to set non-default rewrite mode. The UCS VIC may add/remove/modify the VLAN header of an ingress packet depending on the ingress VLAN rewrite mode. By default, the driver sets the pass-through mode, which tells the NIC "do not touch VLAN header and preserve it as is". This mode is usually sufficient, but can complicate deployments for certain environments. For example, OVS-DPDK in UCS blade environments may want to use "untag default VLAN mode", which removes the VLAN header from an ingress packet if it matches vNIC's default VLAN. Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com> Reviewed-by: John Daley <johndale@cisco.com>
Diffstat (limited to 'drivers/net/enic')
-rw-r--r--drivers/net/enic/enic.h1
-rw-r--r--drivers/net/enic/enic_ethdev.c46
-rw-r--r--drivers/net/enic/enic_main.c4
3 files changed, 47 insertions, 4 deletions
diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index ea0a688..f1895fe 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -125,6 +125,7 @@ struct enic {
bool disable_overlay; /* devargs disable_overlay=1 */
bool nic_cfg_chk; /* NIC_CFG_CHK available */
bool udp_rss_weak; /* Bodega style UDP RSS */
+ uint8_t ig_vlan_rewrite_mode; /* devargs ig-vlan-rewrite */
unsigned int flags;
unsigned int priv_flags;
diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index 697dd65..111bdc8 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -41,6 +41,7 @@ static const struct rte_pci_id pci_id_enic_map[] = {
};
#define ENIC_DEVARG_DISABLE_OVERLAY "disable-overlay"
+#define ENIC_DEVARG_IG_VLAN_REWRITE "ig-vlan-rewrite"
RTE_INIT(enicpmd_init_log);
static void
@@ -858,23 +859,61 @@ static int enic_parse_disable_overlay(__rte_unused const char *key,
return 0;
}
+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_DISABLE_OVERLAY, NULL};
+ ENIC_DEVARG_DISABLE_OVERLAY,
+ ENIC_DEVARG_IG_VLAN_REWRITE,
+ NULL};
struct enic *enic = pmd_priv(dev);
struct rte_kvargs *kvlist;
ENICPMD_FUNC_TRACE();
enic->disable_overlay = false;
+ 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_DISABLE_OVERLAY,
- enic_parse_disable_overlay, enic) < 0) {
+ enic_parse_disable_overlay, enic) < 0 ||
+ rte_kvargs_process(kvlist, ENIC_DEVARG_IG_VLAN_REWRITE,
+ enic_parse_ig_vlan_rewrite, enic) < 0) {
rte_kvargs_free(kvlist);
return -EINVAL;
}
@@ -939,4 +978,5 @@ 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_DISABLE_OVERLAY "=<0|1> ");
+ ENIC_DEVARG_DISABLE_OVERLAY "=0|1 "
+ ENIC_DEVARG_IG_VLAN_REWRITE "=trunk|untag|priority|pass");
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 2cd8516..24de38d 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -1637,8 +1637,10 @@ int enic_probe(struct enic *enic)
}
/* Set ingress vlan rewrite mode before vnic initialization */
+ dev_debug(enic, "Set ig_vlan_rewrite_mode=%u\n",
+ enic->ig_vlan_rewrite_mode);
err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
- IG_VLAN_REWRITE_MODE_PASS_THRU);
+ enic->ig_vlan_rewrite_mode);
if (err) {
dev_err(enic,
"Failed to set ingress vlan rewrite mode, aborting.\n");