testpmd> flush_flow_director 0
+Floating VEB
+~~~~~~~~~~~~~
+
+The Intel® Ethernet Controller X710 and XL710 Family support a feature called
+"Floating VEB".
+
+A Virtual Ethernet Bridge (VEB) is an IEEE Edge Virtual Bridging (EVB) term
+for functionality that allows local switching between virtual endpoints within
+a physical endpoint and also with an external bridge/network.
+
+A "Floating" VEB doesn't have an uplink connection to the outside world so all
+switching is done internally and remains within the host. As such, this
+feature provides security benefits.
+
+In addition, a Floating VEB overcomes a limitation of normal VEBs where they
+cannot forward packets when the physical link is down. Floating VEBs don't need
+to connect to the NIC port so they can still forward traffic from VF to VF
+even when the physical link is down.
+
+Therefore, with this feature enabled VFs can be limited to communicating with
+each other but not an outside network, and they can do so even when there is
+no physical uplink on the associated NIC port.
+
+To enable this feature, the user should pass a ``devargs`` parameter to the
+EAL, for example::
+
+ -w 84:00.0,enable_floating_veb=1
+
+In this configuration the PMD will use the floating VEB feature for all the
+VFs created by this PF device.
+
+Alternatively, the user can specify which VFs need to connect to this floating
+VEB using the ``floating_veb_list`` argument::
+
+ -w 84:00.0,enable_floating_veb=1,floating_veb_list=1;3-4
+
+In this example ``VF1``, ``VF3`` and ``VF4`` connect to the floating VEB,
+while other VFs connect to the normal VEB.
+
+The current implementation only supports one floating VEB and one regular
+VEB. VFs can connect to a floating VEB or a regular VEB according to the
+configuration passed on the EAL command line.
+
+The floating VEB functionality requires a NIC firmware version of 5.0
+or greater.
#include "i40e_pf.h"
#include "i40e_regs.h"
+#define ETH_I40E_FLOATING_VEB_ARG "enable_floating_veb"
+#define ETH_I40E_FLOATING_VEB_LIST_ARG "floating_veb_list"
+
#define I40E_CLEAR_PXE_WAIT_MS 200
/* Maximun number of capability elements */
" frames from VSIs.");
}
+static int
+floating_veb_list_handler(__rte_unused const char *key,
+ const char *floating_veb_value,
+ void *opaque)
+{
+ int idx = 0;
+ unsigned int count = 0;
+ char *end = NULL;
+ int min, max;
+ bool *vf_floating_veb = opaque;
+
+ while (isblank(*floating_veb_value))
+ floating_veb_value++;
+
+ /* Reset floating VEB configuration for VFs */
+ for (idx = 0; idx < I40E_MAX_VF; idx++)
+ vf_floating_veb[idx] = false;
+
+ min = I40E_MAX_VF;
+ do {
+ while (isblank(*floating_veb_value))
+ floating_veb_value++;
+ if (*floating_veb_value == '\0')
+ return -1;
+ errno = 0;
+ idx = strtoul(floating_veb_value, &end, 10);
+ if (errno || end == NULL)
+ return -1;
+ while (isblank(*end))
+ end++;
+ if (*end == '-') {
+ min = idx;
+ } else if ((*end == ';') || (*end == '\0')) {
+ max = idx;
+ if (min == I40E_MAX_VF)
+ min = idx;
+ if (max >= I40E_MAX_VF)
+ max = I40E_MAX_VF - 1;
+ for (idx = min; idx <= max; idx++) {
+ vf_floating_veb[idx] = true;
+ count++;
+ }
+ min = I40E_MAX_VF;
+ } else {
+ return -1;
+ }
+ floating_veb_value = end + 1;
+ } while (*end != '\0');
+
+ if (count == 0)
+ return -1;
+
+ return 0;
+}
+
+static void
+config_vf_floating_veb(struct rte_devargs *devargs,
+ uint16_t floating_veb,
+ bool *vf_floating_veb)
+{
+ struct rte_kvargs *kvlist;
+ int i;
+ const char *floating_veb_list = ETH_I40E_FLOATING_VEB_LIST_ARG;
+
+ if (!floating_veb)
+ return;
+ /* All the VFs attach to the floating VEB by default
+ * when the floating VEB is enabled.
+ */
+ for (i = 0; i < I40E_MAX_VF; i++)
+ vf_floating_veb[i] = true;
+
+ if (devargs == NULL)
+ return;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (kvlist == NULL)
+ return;
+
+ if (!rte_kvargs_count(kvlist, floating_veb_list)) {
+ rte_kvargs_free(kvlist);
+ return;
+ }
+ /* When the floating_veb_list parameter exists, all the VFs
+ * will attach to the legacy VEB firstly, then configure VFs
+ * to the floating VEB according to the floating_veb_list.
+ */
+ if (rte_kvargs_process(kvlist, floating_veb_list,
+ floating_veb_list_handler,
+ vf_floating_veb) < 0) {
+ rte_kvargs_free(kvlist);
+ return;
+ }
+ rte_kvargs_free(kvlist);
+}
+
+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
+is_floating_veb_supported(struct rte_devargs *devargs)
+{
+ struct rte_kvargs *kvlist;
+ const char *floating_veb_key = ETH_I40E_FLOATING_VEB_ARG;
+
+ if (devargs == NULL)
+ return 0;
+
+ kvlist = rte_kvargs_parse(devargs->args, NULL);
+ if (kvlist == NULL)
+ return 0;
+
+ if (!rte_kvargs_count(kvlist, floating_veb_key)) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+ /* Floating VEB is enabled when there's key-value:
+ * enable_floating_veb=1
+ */
+ if (rte_kvargs_process(kvlist, floating_veb_key,
+ i40e_check_floating_handler, NULL) < 0) {
+ rte_kvargs_free(kvlist);
+ return 0;
+ }
+ rte_kvargs_free(kvlist);
+
+ return 1;
+}
+
+static void
+config_floating_veb(struct rte_eth_dev *dev)
+{
+ struct rte_pci_device *pci_dev = dev->pci_dev;
+ struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+ struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+ memset(pf->floating_veb_list, 0, sizeof(pf->floating_veb_list));
+
+ if (hw->aq.fw_maj_ver >= FLOATING_VEB_SUPPORTED_FW_MAJ) {
+ pf->floating_veb = is_floating_veb_supported(pci_dev->devargs);
+ config_vf_floating_veb(pci_dev->devargs, pf->floating_veb,
+ pf->floating_veb_list);
+ } else {
+ pf->floating_veb = false;
+ }
+}
+
static int
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 to support floating VEB */
+ config_floating_veb(dev);
/* Clear PXE mode */
i40e_clear_pxe_mode(hw);
git.droids-corp.org / dpdk.git / commitdiff