Add the new floating related argument option in the devarg.
Using this parameter, all the samples can decide whether to use legacy VEB/VEPA
or floating VEB.
To enable this feature, the user should pass a devargs parameter to the EAL
like "-w 84:00.0,enable_floating=1", and the application will make sure the PMD
will use the floating VEB feature for all the VFs created by this PF device.
Signed-off-by: Zhe Tao <zhe.tao at intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 44 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/i40e/i40e_ethdev.h | 6 ++++++
2 files changed, 50 insertions(+)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 6fdae57..01f1d3d 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -739,6 +739,44 @@ i40e_add_tx_flow_control_drop_filter(struct i40e_pf *pf)
" frames from VSIs.");
}
+static int i40e_check_floating_handler(__rte_unused const char *key,
+ const char *value,
+ __rte_unused void *opaque)
+{
+ if (strcmp(value, "1"))
+ return -1;
+
+ return 0;
+}
+
+static int
+i40e_check_floating(struct rte_devargs *devargs)
+{
+ struct rte_kvargs *kvlist;
+ const char *floating_key = "enable_floating";
+
+ if (devargs == NULL)
+ return 0;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (kvlist == NULL)
+ return 0;
+
+ if (!rte_kvargs_count(kvlist, floating_key)) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+ /* Floating is enabled when there's key-value pair: enable_floating=1 */
+ if (rte_kvargs_process(kvlist, floating_key,
+ i40e_check_floating_handler, NULL) < 0) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+ rte_kvargs_free(kvlist);
+
+ return 1;
+}
+
static int
eth_i40e_dev_init(struct rte_eth_dev *dev)
{
@@ -829,6 +867,12 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
((hw->nvm.version >> 4) & 0xff),
(hw->nvm.version & 0xf), hw->nvm.eetrack);
+ /* Need the special FW version support floating VEB */
+ if (hw->aq.fw_maj_ver >= FLOATING_FW_MAJ) {
+ pf->floating = i40e_check_floating(pci_dev->devargs);
+ } else {
+ pf->floating = false;
+ }
/* Clear PXE mode */
i40e_clear_pxe_mode(hw);
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 1c75672..7dc6936 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -36,6 +36,7 @@
#include <rte_eth_ctrl.h>
#include <rte_time.h>
+#include <rte_kvargs.h>
#define I40E_VLAN_TAG_SIZE 4
@@ -171,6 +172,10 @@ enum i40e_flxpld_layer_idx {
#define I40E_QUEUE_ITR_INTERVAL_DEFAULT 32 /* 32 us */
#define I40E_QUEUE_ITR_INTERVAL_MAX 8160 /* 8160 us */
+/* Special FW support this floating VEB feature */
+#define FLOATING_FW_MAJ 5
+#define FLOATING_FW_MIN 0
+
struct i40e_adapter;
/**
@@ -446,6 +451,7 @@ struct i40e_pf {
struct i40e_fc_conf fc_conf; /* Flow control conf */
struct i40e_mirror_rule_list mirror_list;
uint16_t nb_mirror_rule; /* The number of mirror rules */
+ uint16_t floating; /* The flag to use the floating VEB */
};
enum pending_msg {
--
2.1.4
