[dpdk-dev] [PATCH v2 05/38] common/sfc_efx/base: add an API to get mport ID by selector

[Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>]

From: Igor Romanov <igor.romanov@oktetlabs.ru>

The mport ID is required to set appropriate egress mport ID
in Tx prefix for port representor TxQ.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>
---
 drivers/common/sfc_efx/base/efx.h     | 21 +++++++++
 drivers/common/sfc_efx/base/efx_mae.c | 64 +++++++++++++++++++++++++++
 drivers/common/sfc_efx/version.map    |  1 +
 3 files changed, 86 insertions(+)

diff --git a/drivers/common/sfc_efx/base/efx.h b/drivers/common/sfc_efx/base/efx.h
index 24e1314cc3..94803815ac 100644
--- a/drivers/common/sfc_efx/base/efx.h
+++ b/drivers/common/sfc_efx/base/efx.h
@@ -4181,6 +4181,19 @@ typedef struct efx_mport_sel_s {
 	uint32_t sel;
 } efx_mport_sel_t;
 
+/*
+ * MPORT ID. Used to refer dynamically to a specific MPORT.
+ * The difference between MPORT selector and MPORT ID is that
+ * selector can specify an exact MPORT ID or it can specify a
+ * pattern by which an exact MPORT ID can be selected. For example,
+ * static MPORT selector can specify MPORT of a current PF, which
+ * will be translated to the dynamic MPORT ID based on which PF is
+ * using that MPORT selector.
+ */
+typedef struct efx_mport_id_s {
+	uint32_t id;
+} efx_mport_id_t;
+
 #define	EFX_MPORT_NULL			(0U)
 
 /*
@@ -4210,6 +4223,14 @@ efx_mae_mport_by_pcie_function(
 	__in				uint32_t vf,
 	__out				efx_mport_sel_t *mportp);
 
+/* Get MPORT ID by an MPORT selector */
+LIBEFX_API
+extern	__checkReturn			efx_rc_t
+efx_mae_mport_id_by_selector(
+	__in				efx_nic_t *enp,
+	__in				const efx_mport_sel_t *mport_selectorp,
+	__out				efx_mport_id_t *mport_idp);
+
 /*
  * Fields which have BE postfix in their named constants are expected
  * to be passed by callers in big-endian byte order. They will appear
diff --git a/drivers/common/sfc_efx/base/efx_mae.c b/drivers/common/sfc_efx/base/efx_mae.c
index c22206e227..b38b1143d6 100644
--- a/drivers/common/sfc_efx/base/efx_mae.c
+++ b/drivers/common/sfc_efx/base/efx_mae.c
@@ -731,6 +731,70 @@ efx_mae_mport_by_pcie_function(
 
 	return (0);
 
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+
+static	__checkReturn			efx_rc_t
+efx_mcdi_mae_mport_lookup(
+	__in				efx_nic_t *enp,
+	__in				const efx_mport_sel_t *mport_selectorp,
+	__out				efx_mport_id_t *mport_idp)
+{
+	efx_mcdi_req_t req;
+	EFX_MCDI_DECLARE_BUF(payload,
+	    MC_CMD_MAE_MPORT_LOOKUP_IN_LEN,
+	    MC_CMD_MAE_MPORT_LOOKUP_OUT_LEN);
+	efx_rc_t rc;
+
+	req.emr_cmd = MC_CMD_MAE_MPORT_LOOKUP;
+	req.emr_in_buf = payload;
+	req.emr_in_length = MC_CMD_MAE_MPORT_LOOKUP_IN_LEN;
+	req.emr_out_buf = payload;
+	req.emr_out_length = MC_CMD_MAE_MPORT_LOOKUP_OUT_LEN;
+
+	MCDI_IN_SET_DWORD(req, MAE_MPORT_LOOKUP_IN_MPORT_SELECTOR,
+	    mport_selectorp->sel);
+
+	efx_mcdi_execute(enp, &req);
+
+	if (req.emr_rc != 0) {
+		rc = req.emr_rc;
+		goto fail1;
+	}
+
+	mport_idp->id = MCDI_OUT_DWORD(req, MAE_MPORT_LOOKUP_OUT_MPORT_ID);
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+	return (rc);
+}
+
+	__checkReturn			efx_rc_t
+efx_mae_mport_id_by_selector(
+	__in				efx_nic_t *enp,
+	__in				const efx_mport_sel_t *mport_selectorp,
+	__out				efx_mport_id_t *mport_idp)
+{
+	const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
+	efx_rc_t rc;
+
+	if (encp->enc_mae_supported == B_FALSE) {
+		rc = ENOTSUP;
+		goto fail1;
+	}
+
+	rc = efx_mcdi_mae_mport_lookup(enp, mport_selectorp, mport_idp);
+	if (rc != 0)
+		goto fail2;
+
+	return (0);
+
 fail2:
 	EFSYS_PROBE(fail2);
 fail1:
diff --git a/drivers/common/sfc_efx/version.map b/drivers/common/sfc_efx/version.map
index 0c5bcdfa84..3dc21878c0 100644
--- a/drivers/common/sfc_efx/version.map
+++ b/drivers/common/sfc_efx/version.map
@@ -126,6 +126,7 @@ INTERNAL {
 	efx_mae_match_specs_equal;
 	efx_mae_mport_by_pcie_function;
 	efx_mae_mport_by_phy_port;
+	efx_mae_mport_id_by_selector;
 	efx_mae_outer_rule_insert;
 	efx_mae_outer_rule_remove;
 
-- 
2.30.2