Commit e5a2538a authored by Ben Hutchings's avatar Ben Hutchings
Browse files

sfc: Clean up validation of datapath capabilities 



Rename efx_ef10_init_capabilities() to the more specific
efx_ef10_init_datapath_caps().

Stop accepting short responses to MC_CMD_GET_CAPABILITIES; we
don't need to support pre-production firmware.

Move the check for RX prefix support from efx_ef10_probe() into
efx_ef10_init_datapath_caps() and use consistent error messages
for missing TSO support and missing RX prefix support.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
parent 869070c5

drivers/net/ethernet/sfc/ef10.c

+22 −19
Original line number Diff line number Diff line
@@ -94,7 +94,7 @@ static unsigned int efx_ef10_mem_map_size(struct efx_nic *efx) 
	return resource_size(&efx->pci_dev->resource[EFX_MEM_BAR]);

}



static int efx_ef10_init_capabilities(struct efx_nic *efx)

static int efx_ef10_init_datapath_caps(struct efx_nic *efx)

{

	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_OUT_LEN);

	struct efx_ef10_nic_data *nic_data = efx->nic_data;
@@ -107,16 +107,27 @@ static int efx_ef10_init_capabilities(struct efx_nic *efx) 
			  outbuf, sizeof(outbuf), &outlen);

	if (rc)

		return rc;

	if (outlen < sizeof(outbuf)) {

		netif_err(efx, drv, efx->net_dev,

			  "unable to read datapath firmware capabilities\n");

		return -EIO;

	}



	if (outlen >= sizeof(outbuf)) {

	nic_data->datapath_caps =

		MCDI_DWORD(outbuf, GET_CAPABILITIES_OUT_FLAGS1);



	if (!(nic_data->datapath_caps &

	      (1 << MC_CMD_GET_CAPABILITIES_OUT_TX_TSO_LBN))) {

		netif_err(efx, drv, efx->net_dev,

				  "Capabilities don't indicate TSO support.\n");

			  "current firmware does not support TSO\n");

		return -ENODEV;

	}



	if (!(nic_data->datapath_caps &

	      (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_PREFIX_LEN_14_LBN))) {

		netif_err(efx, probe, efx->net_dev,

			  "current firmware does not support an RX prefix\n");

		return -ENODEV;

	}



	return 0;
@@ -217,21 +228,13 @@ static int efx_ef10_probe(struct efx_nic *efx) 
	if (rc)

		goto fail3;



	rc = efx_ef10_init_capabilities(efx);

	rc = efx_ef10_init_datapath_caps(efx);

	if (rc < 0)

		goto fail3;



	efx->rx_packet_len_offset =

		ES_DZ_RX_PREFIX_PKTLEN_OFST - ES_DZ_RX_PREFIX_SIZE;



	if (!(nic_data->datapath_caps &

	      (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_PREFIX_LEN_14_LBN))) {

		netif_err(efx, probe, efx->net_dev,

			  "current firmware does not support an RX prefix\n");

		rc = -ENODEV;

		goto fail3;

	}



	rc = efx_mcdi_port_get_number(efx);

	if (rc < 0)

		goto fail3;

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