sfc: manually allocate and free vadaptors
To be able to use MC_CMD_VADAPTOR_SET_MAC, vadaptors must be
manually allocated and freed as automatic vadaptors will disappear
when their reference_count reaches zero, which must happen before
the MAC address is changed.
Vadaptors are allocated and freed in the vswitching_probe/remove
functions for PFs and VFs, and this means that vadaptors are restored
correctly following an MC reboot or other reset when required.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c
index b9545bf..1b93acf 100644
--- a/drivers/net/ethernet/sfc/ef10_sriov.c
+++ b/drivers/net/ethernet/sfc/ef10_sriov.c
@@ -117,6 +117,24 @@
NULL, 0, NULL);
}
+static int efx_ef10_vadaptor_alloc(struct efx_nic *efx, unsigned int port_id)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_ALLOC_IN_LEN);
+
+ MCDI_SET_DWORD(inbuf, VADAPTOR_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
+ return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_ALLOC, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+}
+
+static int efx_ef10_vadaptor_free(struct efx_nic *efx, unsigned int port_id)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_FREE_IN_LEN);
+
+ MCDI_SET_DWORD(inbuf, VADAPTOR_FREE_IN_UPSTREAM_PORT_ID, port_id);
+ return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_FREE, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+}
+
static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
@@ -231,14 +249,17 @@
/* On top of the default firmware vswitch setup, create a VEB vswitch and
* expansion vport for use by this function.
*/
-int efx_ef10_vswitching_probe(struct efx_nic *efx)
+int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
struct net_device *net_dev = efx->net_dev;
int rc;
- if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0)
- return 0; /* vswitch not needed as we have no VFs */
+ if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
+ /* vswitch not needed as we have no VFs */
+ efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
+ return 0;
+ }
rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
@@ -254,10 +275,16 @@
rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
if (rc)
goto fail3;
-
ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
+ rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
+ if (rc)
+ goto fail4;
+
return 0;
+fail4:
+ efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
+ eth_zero_addr(nic_data->vport_mac);
fail3:
efx_ef10_vport_free(efx, nic_data->vport_id);
nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
@@ -267,7 +294,14 @@
return rc;
}
-int efx_ef10_vswitching_restore(struct efx_nic *efx)
+int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ return efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
+}
+
+int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
int rc;
@@ -275,7 +309,7 @@
if (!nic_data->must_probe_vswitching)
return 0;
- rc = efx_ef10_vswitching_probe(efx);
+ rc = efx_ef10_vswitching_probe_pf(efx);
if (rc)
goto fail;
@@ -288,12 +322,30 @@
return rc;
}
-void efx_ef10_vswitching_remove(struct efx_nic *efx)
+int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ int rc;
+
+ if (!nic_data->must_probe_vswitching)
+ return 0;
+
+ rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
+ if (rc)
+ return rc;
+
+ nic_data->must_probe_vswitching = false;
+ return 0;
+}
+
+void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
efx_ef10_sriov_free_vf_vswitching(efx);
+ efx_ef10_vadaptor_free(efx, nic_data->vport_id);
+
if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
return; /* No vswitch was ever created */
@@ -308,6 +360,11 @@
efx_ef10_vswitch_free(efx, nic_data->vport_id);
}
+void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
+{
+ efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
+}
+
static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
{
int rc = 0;