Function sfc_attach

dpdk/drivers/net/sfc/sfc.c:881–1079

}

int
sfc_attach(struct sfc_adapter *sa)
{
	const efx_nic_cfg_t *encp;
	efx_nic_t *enp = sa->nic;
	int rc;

	sfc_log_init(sa, "entry");

	SFC_ASSERT(sfc_adapter_is_locked(sa));

	efx_mcdi_new_epoch(enp);

	sfc_log_init(sa, "reset nic");
	rc = efx_nic_reset(enp);
	if (rc != 0)
		goto fail_nic_reset;

	rc = sfc_sriov_attach(sa);
	if (rc != 0)
		goto fail_sriov_attach;

	/*
	 * Probed NIC is sufficient for tunnel init.
	 * Initialize tunnel support to be able to use libefx
	 * efx_tunnel_config_udp_{add,remove}() in any state and
	 * efx_tunnel_reconfigure() on start up.
	 */
	rc = efx_tunnel_init(enp);
	if (rc != 0)
		goto fail_tunnel_init;

	encp = efx_nic_cfg_get(sa->nic);

	/*
	 * Make a copy of supported tunnel encapsulations in shared
	 * memory to be used on supported Rx packet type classes get.
	 */
	sa->priv.shared->tunnel_encaps =
		encp->enc_tunnel_encapsulations_supported;

	if (sfc_dp_tx_offload_capa(sa->priv.dp_tx) & RTE_ETH_TX_OFFLOAD_TCP_TSO) {
		sa->tso = encp->enc_fw_assisted_tso_v2_enabled ||
			  encp->enc_tso_v3_enabled;
		if (!sa->tso)
			sfc_info(sa, "TSO support isn't available on this adapter");
	}

	if (sa->tso &&
	    (sfc_dp_tx_offload_capa(sa->priv.dp_tx) &
	     (RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |
	      RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO)) != 0) {
		sa->tso_encap = encp->enc_fw_assisted_tso_v2_encap_enabled ||
				encp->enc_tso_v3_enabled;
		if (!sa->tso_encap)
			sfc_info(sa, "Encapsulated TSO support isn't available on this adapter");
	}