1 files changed, 137 insertions, 0 deletions
diff --git a/src/seastar/dpdk/drivers/net/sfc/sfc_tx.h b/src/seastar/dpdk/drivers/net/sfc/sfc_tx.h
new file mode 100644
index 000000000..d0e751a26
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/sfc/sfc_tx.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2016-2018 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * This software was jointly developed between OKTET Labs (under contract
+ * for Solarflare) and Solarflare Communications, Inc.
+ */
+
+#ifndef _SFC_TX_H
+#define _SFC_TX_H
+
+#include <rte_mbuf.h>
+#include <rte_ethdev_driver.h>
+
+#include "efx.h"
+
+#include "sfc_dp_tx.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct sfc_adapter;
+struct sfc_evq;
+
+/**
+ * Software Tx descriptor information associated with hardware Tx
+ * descriptor.
+ */
+struct sfc_efx_tx_sw_desc {
+	struct rte_mbuf		*mbuf;
+	uint8_t			*tsoh;	/* Buffer to store TSO header */
+};
+
+enum sfc_txq_state_bit {
+	SFC_TXQ_INITIALIZED_BIT = 0,
+#define SFC_TXQ_INITIALIZED	(1 << SFC_TXQ_INITIALIZED_BIT)
+	SFC_TXQ_STARTED_BIT,
+#define SFC_TXQ_STARTED		(1 << SFC_TXQ_STARTED_BIT)
+	SFC_TXQ_FLUSHING_BIT,
+#define SFC_TXQ_FLUSHING	(1 << SFC_TXQ_FLUSHING_BIT)
+	SFC_TXQ_FLUSHED_BIT,
+#define SFC_TXQ_FLUSHED		(1 << SFC_TXQ_FLUSHED_BIT)
+	SFC_TXQ_FLUSH_FAILED_BIT,
+#define SFC_TXQ_FLUSH_FAILED	(1 << SFC_TXQ_FLUSH_FAILED_BIT)
+};
+
+/**
+ * Transmit queue control primary process-only information.
+ * Not used on datapath.
+ */
+struct sfc_txq {
+	unsigned int			hw_index;
+	struct sfc_evq			*evq;
+	efsys_mem_t			mem;
+	efx_txq_t			*common;
+};
+
+struct sfc_txq *sfc_txq_by_dp_txq(const struct sfc_dp_txq *dp_txq);
+
+/**
+ * Transmit queue information used on libefx-based data path.
+ * Allocated on the socket specified on the queue setup.
+ */
+struct sfc_efx_txq {
+	struct sfc_evq			*evq;
+	struct sfc_efx_tx_sw_desc	*sw_ring;
+	unsigned int			ptr_mask;
+	efx_desc_t			*pend_desc;
+	efx_txq_t			*common;
+	unsigned int			added;
+	unsigned int			pending;
+	unsigned int			completed;
+	unsigned int			max_fill_level;
+	unsigned int			free_thresh;
+	uint16_t			hw_vlan_tci;
+	uint16_t			dma_desc_size_max;
+
+	unsigned int			hw_index;
+	unsigned int			flags;
+#define SFC_EFX_TXQ_FLAG_STARTED	0x1
+#define SFC_EFX_TXQ_FLAG_RUNNING	0x2
+
+	/* Datapath transmit queue anchor */
+	struct sfc_dp_txq		dp;
+};
+
+static inline struct sfc_efx_txq *
+sfc_efx_txq_by_dp_txq(struct sfc_dp_txq *dp_txq)
+{
+	return container_of(dp_txq, struct sfc_efx_txq, dp);
+}
+
+struct sfc_txq_info {
+	unsigned int		state;
+	unsigned int		entries;
+	struct sfc_dp_txq	*dp;
+	boolean_t		deferred_start;
+	boolean_t		deferred_started;
+	unsigned int		free_thresh;
+	uint64_t		offloads;
+};
+
+struct sfc_txq_info *sfc_txq_info_by_dp_txq(const struct sfc_dp_txq *dp_txq);
+
+int sfc_tx_configure(struct sfc_adapter *sa);
+void sfc_tx_close(struct sfc_adapter *sa);
+
+int sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
+		 uint16_t nb_tx_desc, unsigned int socket_id,
+		 const struct rte_eth_txconf *tx_conf);
+void sfc_tx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
+
+void sfc_tx_qflush_done(struct sfc_txq_info *txq_info);
+int sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index);
+void sfc_tx_qstop(struct sfc_adapter *sa, unsigned int sw_index);
+int sfc_tx_start(struct sfc_adapter *sa);
+void sfc_tx_stop(struct sfc_adapter *sa);
+
+uint64_t sfc_tx_get_dev_offload_caps(struct sfc_adapter *sa);
+uint64_t sfc_tx_get_queue_offload_caps(struct sfc_adapter *sa);
+
+/* From 'sfc_tso.c' */
+int sfc_efx_tso_alloc_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
+				unsigned int txq_entries,
+				unsigned int socket_id);
+void sfc_efx_tso_free_tsoh_objs(struct sfc_efx_tx_sw_desc *sw_ring,
+				unsigned int txq_entries);
+int sfc_efx_tso_do(struct sfc_efx_txq *txq, unsigned int idx,
+		   struct rte_mbuf **in_seg, size_t *in_off, efx_desc_t **pend,
+		   unsigned int *pkt_descs, size_t *pkt_len);
+
+#ifdef __cplusplus
+}
+#endif
+#endif	/* _SFC_TX_H */