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sfc: Introduce and use MCDI_DECLARE_BUF macro

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MCDI_DECLARE_BUF declares a variable as an MCDI buffer of the
requested length, adding any necessary padding.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Ben Hutchings 2012-09-14 17:30:10 +01:00
parent ab0115fc7d
commit 59cfc479b2
7 changed files with 66 additions and 56 deletions
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52
drivers/net/ethernet/sfc/mcdi.c
View File

@ -606,7 +606,7 @@ void efx_mcdi_process_event(struct efx_channel *channel,
void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
{
u8 outbuf[ALIGN(MC_CMD_GET_VERSION_OUT_LEN, 4)];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_VERSION_OUT_LEN);
size_t outlength;
const __le16 *ver_words;
int rc;
@ -637,8 +637,8 @@ fail:
int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
bool *was_attached)
{
u8 inbuf[MC_CMD_DRV_ATTACH_IN_LEN];
u8 outbuf[MC_CMD_DRV_ATTACH_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_DRV_ATTACH_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_DRV_ATTACH_OUT_LEN);
size_t outlen;
int rc;
@ -667,7 +667,7 @@ fail:
int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
u16 *fw_subtype_list, u32 *capabilities)
{
uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LENMAX];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_BOARD_CFG_OUT_LENMAX);
size_t outlen, offset, i;
int port_num = efx_port_num(efx);
int rc;
@ -721,7 +721,7 @@ fail:
int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq)
{
u8 inbuf[MC_CMD_LOG_CTRL_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_LOG_CTRL_IN_LEN);
u32 dest = 0;
int rc;
@ -749,7 +749,7 @@ fail:
int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out)
{
u8 outbuf[MC_CMD_NVRAM_TYPES_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_TYPES_OUT_LEN);
size_t outlen;
int rc;
@ -777,8 +777,8 @@ int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
size_t *size_out, size_t *erase_size_out,
bool *protected_out)
{
u8 inbuf[MC_CMD_NVRAM_INFO_IN_LEN];
u8 outbuf[MC_CMD_NVRAM_INFO_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_INFO_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_INFO_OUT_LEN);
size_t outlen;
int rc;
@ -806,7 +806,7 @@ fail:
int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type)
{
u8 inbuf[MC_CMD_NVRAM_UPDATE_START_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_START_IN_LEN);
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type);
@ -828,8 +828,9 @@ fail:
int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
loff_t offset, u8 *buffer, size_t length)
{
u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN];
u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_READ_IN_LEN);
MCDI_DECLARE_BUF(outbuf,
MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX));
size_t outlen;
int rc;
@ -853,7 +854,8 @@ fail:
int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type,
loff_t offset, const u8 *buffer, size_t length)
{
u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
MCDI_DECLARE_BUF(inbuf,
MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX));
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_TYPE, type);
@ -879,7 +881,7 @@ fail:
int efx_mcdi_nvram_erase(struct efx_nic *efx, unsigned int type,
loff_t offset, size_t length)
{
u8 inbuf[MC_CMD_NVRAM_ERASE_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_ERASE_IN_LEN);
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_TYPE, type);
@ -902,7 +904,7 @@ fail:
int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
{
u8 inbuf[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN);
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type);
@ -923,8 +925,8 @@ fail:
static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type)
{
u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN];
u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_TEST_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_TEST_OUT_LEN);
int rc;
MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type);
@ -976,8 +978,8 @@ fail1:
static int efx_mcdi_read_assertion(struct efx_nic *efx)
{
u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN];
u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_ASSERTS_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_ASSERTS_OUT_LEN);
unsigned int flags, index, ofst;
const char *reason;
size_t outlen;
@ -1032,7 +1034,7 @@ static int efx_mcdi_read_assertion(struct efx_nic *efx)
static void efx_mcdi_exit_assertion(struct efx_nic *efx)
{
u8 inbuf[MC_CMD_REBOOT_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_REBOOT_IN_LEN);
/* If the MC is running debug firmware, it might now be
* waiting for a debugger to attach, but we just want it to
@ -1062,7 +1064,7 @@ int efx_mcdi_handle_assertion(struct efx_nic *efx)
void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
{
u8 inbuf[MC_CMD_SET_ID_LED_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_ID_LED_IN_LEN);
int rc;
BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF);
@ -1091,7 +1093,7 @@ int efx_mcdi_reset_port(struct efx_nic *efx)
int efx_mcdi_reset_mc(struct efx_nic *efx)
{
u8 inbuf[MC_CMD_REBOOT_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_REBOOT_IN_LEN);
int rc;
BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
@ -1110,8 +1112,8 @@ int efx_mcdi_reset_mc(struct efx_nic *efx)
static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type,
const u8 *mac, int *id_out)
{
u8 inbuf[MC_CMD_WOL_FILTER_SET_IN_LEN];
u8 outbuf[MC_CMD_WOL_FILTER_SET_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_WOL_FILTER_SET_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_WOL_FILTER_SET_OUT_LEN);
size_t outlen;
int rc;
@ -1151,7 +1153,7 @@ efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac, int *id_out)
int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out)
{
u8 outbuf[MC_CMD_WOL_FILTER_GET_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_WOL_FILTER_GET_OUT_LEN);
size_t outlen;
int rc;
@ -1178,7 +1180,7 @@ fail:
int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id)
{
u8 inbuf[MC_CMD_WOL_FILTER_REMOVE_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_WOL_FILTER_REMOVE_IN_LEN);
int rc;
MCDI_SET_DWORD(inbuf, WOL_FILTER_REMOVE_IN_FILTER_ID, (u32)id);

3
drivers/net/ethernet/sfc/mcdi.h
View File

@ -85,6 +85,9 @@ extern void efx_mcdi_process_event(struct efx_channel *channel,
efx_qword_t *event);
extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
#define MCDI_DECLARE_BUF(_name, _len) \
u8 _name[ALIGN(_len, 4)]
#define MCDI_PTR2(_buf, _ofst) \
(((u8 *)_buf) + _ofst)
#define MCDI_SET_DWORD2(_buf, _ofst, _value) \

17
drivers/net/ethernet/sfc/mcdi_mac.c
View File

@ -15,7 +15,7 @@
int efx_mcdi_set_mac(struct efx_nic *efx)
{
u32 reject, fcntl;
u8 cmdbytes[MC_CMD_SET_MAC_IN_LEN];
MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
memcpy(cmdbytes + MC_CMD_SET_MAC_IN_ADDR_OFST,
efx->net_dev->dev_addr, ETH_ALEN);
@ -55,7 +55,7 @@ int efx_mcdi_set_mac(struct efx_nic *efx)
bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
{
u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
size_t outlength;
int rc;
@ -75,7 +75,7 @@ bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
u32 dma_len, int enable, int clear)
{
u8 inbuf[MC_CMD_MAC_STATS_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
int rc;
efx_dword_t *cmd_ptr;
int period = enable ? 1000 : 0;
@ -115,16 +115,21 @@ fail:
int efx_mcdi_mac_reconfigure(struct efx_nic *efx)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_MCAST_HASH_IN_LEN);
int rc;
BUILD_BUG_ON(MC_CMD_SET_MCAST_HASH_IN_LEN !=
MC_CMD_SET_MCAST_HASH_IN_HASH0_OFST +
sizeof(efx->multicast_hash));
WARN_ON(!mutex_is_locked(&efx->mac_lock));
rc = efx_mcdi_set_mac(efx);
if (rc != 0)
return rc;
memcpy(MCDI_PTR(inbuf, SET_MCAST_HASH_IN_HASH0),
efx->multicast_hash.byte, sizeof(efx->multicast_hash));
return efx_mcdi_rpc(efx, MC_CMD_SET_MCAST_HASH,
efx->multicast_hash.byte,
sizeof(efx->multicast_hash),
NULL, 0, NULL);
inbuf, sizeof(inbuf), NULL, 0, NULL);
}

4
drivers/net/ethernet/sfc/mcdi_mon.c
View File

@ -92,7 +92,7 @@ struct efx_mcdi_mon_attribute {
static int efx_mcdi_mon_update(struct efx_nic *efx)
{
struct efx_mcdi_mon *hwmon = efx_mcdi_mon(efx);
u8 inbuf[MC_CMD_READ_SENSORS_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_READ_SENSORS_IN_LEN);
int rc;
MCDI_SET_DWORD(inbuf, READ_SENSORS_IN_DMA_ADDR_LO,
@ -236,7 +236,7 @@ int efx_mcdi_mon_probe(struct efx_nic *efx)
{
struct efx_mcdi_mon *hwmon = efx_mcdi_mon(efx);
unsigned int n_attrs, n_temp = 0, n_cool = 0, n_in = 0;
u8 outbuf[MC_CMD_SENSOR_INFO_OUT_LENMAX];
MCDI_DECLARE_BUF(outbuf, MC_CMD_SENSOR_INFO_OUT_LENMAX);
size_t outlen;
char name[12];
u32 mask;

26
drivers/net/ethernet/sfc/mcdi_phy.c
View File

@ -36,7 +36,7 @@ struct efx_mcdi_phy_data {
static int
efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
{
u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
size_t outlen;
int rc;
@ -78,7 +78,7 @@ static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
u32 flags, u32 loopback_mode,
u32 loopback_speed)
{
u8 inbuf[MC_CMD_SET_LINK_IN_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
int rc;
BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
@ -102,7 +102,7 @@ fail:
static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
{
u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
size_t outlen;
int rc;
@ -129,8 +129,8 @@ int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus,
unsigned int prtad, unsigned int devad, u16 addr,
u16 *value_out, u32 *status_out)
{
u8 inbuf[MC_CMD_MDIO_READ_IN_LEN];
u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
size_t outlen;
int rc;
@ -157,8 +157,8 @@ int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus,
unsigned int prtad, unsigned int devad, u16 addr,
u16 value, u32 *status_out)
{
u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN];
u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
size_t outlen;
int rc;
@ -307,7 +307,7 @@ static u32 mcdi_to_ethtool_media(u32 media)
static int efx_mcdi_phy_probe(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data;
u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
u32 caps;
int rc;
@ -472,7 +472,7 @@ void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
static bool efx_mcdi_phy_poll(struct efx_nic *efx)
{
struct efx_link_state old_state = efx->link_state;
u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
int rc;
WARN_ON(!mutex_is_locked(&efx->mac_lock));
@ -507,7 +507,7 @@ static void efx_mcdi_phy_remove(struct efx_nic *efx)
static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
int rc;
ecmd->supported =
@ -579,7 +579,7 @@ static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ec
static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
{
u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
size_t outlen;
int rc;
@ -744,8 +744,8 @@ static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
struct ethtool_eeprom *ee, u8 *data)
{
u8 outbuf[MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX];
u8 inbuf[MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN];
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
size_t outlen;
int rc;
unsigned int payload_len;

16
drivers/net/ethernet/sfc/ptp.c
View File

@ -311,7 +311,7 @@ static int efx_phc_enable(struct ptp_clock_info *ptp,
/* Enable MCDI PTP support. */
static int efx_ptp_enable(struct efx_nic *efx)
{
u8 inbuf[MC_CMD_PTP_IN_ENABLE_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_ENABLE_LEN);
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ENABLE);
MCDI_SET_DWORD(inbuf, PTP_IN_ENABLE_QUEUE,
@ -329,7 +329,7 @@ static int efx_ptp_enable(struct efx_nic *efx)
*/
static int efx_ptp_disable(struct efx_nic *efx)
{
u8 inbuf[MC_CMD_PTP_IN_DISABLE_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_DISABLE_LEN);
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_DISABLE);
return efx_mcdi_rpc(efx, MC_CMD_PTP, inbuf, sizeof(inbuf),
@ -518,7 +518,7 @@ static int efx_ptp_process_times(struct efx_nic *efx, u8 *synch_buf,
static int efx_ptp_synchronize(struct efx_nic *efx, unsigned int num_readings)
{
struct efx_ptp_data *ptp = efx->ptp_data;
u8 synch_buf[MC_CMD_PTP_OUT_SYNCHRONIZE_LENMAX];
MCDI_DECLARE_BUF(synch_buf, MC_CMD_PTP_OUT_SYNCHRONIZE_LENMAX);
size_t response_length;
int rc;
unsigned long timeout;
@ -569,7 +569,7 @@ static int efx_ptp_xmit_skb(struct efx_nic *efx, struct sk_buff *skb)
int rc = -EIO;
/* MCDI driver requires word aligned lengths */
size_t len = ALIGN(MC_CMD_PTP_IN_TRANSMIT_LEN(skb->len), 4);
u8 txtime[MC_CMD_PTP_OUT_TRANSMIT_LEN];
MCDI_DECLARE_BUF(txtime, MC_CMD_PTP_OUT_TRANSMIT_LEN);
MCDI_SET_DWORD(txbuf, PTP_IN_OP, MC_CMD_PTP_OP_TRANSMIT);
MCDI_SET_DWORD(txbuf, PTP_IN_TRANSMIT_LENGTH, skb->len);
@ -1359,7 +1359,7 @@ static int efx_phc_adjfreq(struct ptp_clock_info *ptp, s32 delta)
struct efx_ptp_data,
phc_clock_info);
struct efx_nic *efx = ptp_data->channel->efx;
u8 inadj[MC_CMD_PTP_IN_ADJUST_LEN];
MCDI_DECLARE_BUF(inadj, MC_CMD_PTP_IN_ADJUST_LEN);
s64 adjustment_ns;
int rc;
@ -1394,7 +1394,7 @@ static int efx_phc_adjtime(struct ptp_clock_info *ptp, s64 delta)
phc_clock_info);
struct efx_nic *efx = ptp_data->channel->efx;
struct timespec delta_ts = ns_to_timespec(delta);
u8 inbuf[MC_CMD_PTP_IN_ADJUST_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_ADJUST_LEN);
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ADJUST);
MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_FREQ_LO, 0);
@ -1411,8 +1411,8 @@ static int efx_phc_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
struct efx_ptp_data,
phc_clock_info);
struct efx_nic *efx = ptp_data->channel->efx;
u8 inbuf[MC_CMD_PTP_IN_READ_NIC_TIME_LEN];
u8 outbuf[MC_CMD_PTP_OUT_READ_NIC_TIME_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_READ_NIC_TIME_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_PTP_OUT_READ_NIC_TIME_LEN);
int rc;
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_READ_NIC_TIME);

4
drivers/net/ethernet/sfc/siena_sriov.c
View File

@ -197,8 +197,8 @@ static unsigned abs_index(struct efx_vf *vf, unsigned index)
static int efx_sriov_cmd(struct efx_nic *efx, bool enable,
unsigned *vi_scale_out, unsigned *vf_total_out)
{
u8 inbuf[MC_CMD_SRIOV_IN_LEN];
u8 outbuf[MC_CMD_SRIOV_OUT_LEN];
MCDI_DECLARE_BUF(inbuf, MC_CMD_SRIOV_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_SRIOV_OUT_LEN);
unsigned vi_scale, vf_total;
size_t outlen;
int rc;