1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.h b/drivers/net/ethernet/intel/ice/ice_dcb_lib.h
new file mode 100644
index 000000000..800879a88
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.h
@@ -0,0 +1,138 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_DCB_LIB_H_
+#define _ICE_DCB_LIB_H_
+
+#include "ice.h"
+#include "ice_base.h"
+#include "ice_lib.h"
+
+#ifdef CONFIG_DCB
+#define ICE_TC_MAX_BW		100 /* Default Max BW percentage */
+#define ICE_DCB_HW_CHG_RST	0 /* DCB configuration changed with reset */
+#define ICE_DCB_NO_HW_CHG	1 /* DCB configuration did not change */
+#define ICE_DCB_HW_CHG		2 /* DCB configuration changed, no reset */
+
+void ice_dcb_rebuild(struct ice_pf *pf);
+int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked);
+u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg);
+void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi);
+bool ice_is_pfc_causing_hung_q(struct ice_pf *pf, unsigned int txqueue);
+u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index);
+int
+ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked);
+int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg);
+void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked);
+void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi);
+int ice_init_pf_dcb(struct ice_pf *pf, bool locked);
+void ice_update_dcb_stats(struct ice_pf *pf);
+void
+ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring,
+			      struct ice_tx_buf *first);
+void
+ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
+				    struct ice_rq_event_info *event);
+/**
+ * ice_find_q_in_range
+ * @low: start of queue range for a TC i.e. offset of TC
+ * @high: start of queue for next TC
+ * @tx_q: hung_queue/tx_queue
+ *
+ * finds if queue 'tx_q' falls between the two offsets of any given TC
+ */
+static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q)
+{
+	return (tx_q >= low) && (tx_q < high);
+}
+
+static inline void
+ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
+{
+	tlan_ctx->cgd_num = dcb_tc;
+}
+
+static inline bool ice_is_dcb_active(struct ice_pf *pf)
+{
+	return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) ||
+		test_bit(ICE_FLAG_DCB_ENA, pf->flags));
+}
+
+static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
+{
+	return pf->hw.port_info->qos_cfg.local_dcbx_cfg.pfc_mode;
+}
+
+#else
+static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
+
+static inline void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi)
+{
+	vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;
+	vsi->tc_cfg.numtc = 1;
+}
+
+static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
+{
+	return ICE_DFLT_TRAFFIC_CLASS;
+}
+
+static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
+{
+	return 1;
+}
+
+static inline u8
+ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
+	       int __always_unused queue_index)
+{
+	return 0;
+}
+
+static inline int
+ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)
+{
+	dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");
+	return -EOPNOTSUPP;
+}
+
+static inline int
+ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,
+	       struct ice_dcbx_cfg __always_unused *new_cfg,
+	       bool __always_unused locked)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int
+ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused *tx_ring,
+			      struct ice_tx_buf __always_unused *first)
+{
+	return 0;
+}
+
+static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
+{
+	return false;
+}
+
+static inline bool
+ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
+			  unsigned int __always_unused txqueue)
+{
+	return false;
+}
+
+static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
+{
+	return 0;
+}
+
+static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }
+static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
+static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
+static inline void
+ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }
+static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { }
+#endif /* CONFIG_DCB */
+#endif /* _ICE_DCB_LIB_H_ */