net/funeth: add the data path

Add the driver's data path. Tx handles skbs, XDP, and kTLS, Rx has skbs
and XDP. Also included are Rx and Tx queue creation/tear-down and
tracing.
Signed-off-by: Dimitris Michailidis <dmichail@fungible.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/fungible/funeth/funeth_trace.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM funeth
+
+#if !defined(_TRACE_FUNETH_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_FUNETH_H
+
+#include <linux/tracepoint.h>
+
+#include "funeth_txrx.h"
+
+TRACE_EVENT(funeth_tx,
+
+	TP_PROTO(const struct funeth_txq *txq,
+		 u32 len,
+		 u32 sqe_idx,
+		 u32 ngle),
+
+	TP_ARGS(txq, len, sqe_idx, ngle),
+
+	TP_STRUCT__entry(
+		__field(u32, qidx)
+		__field(u32, len)
+		__field(u32, sqe_idx)
+		__field(u32, ngle)
+		__string(devname, txq->netdev->name)
+	),
+
+	TP_fast_assign(
+		__entry->qidx = txq->qidx;
+		__entry->len = len;
+		__entry->sqe_idx = sqe_idx;
+		__entry->ngle = ngle;
+		__assign_str(devname, txq->netdev->name);
+	),
+
+	TP_printk("%s: Txq %u, SQE idx %u, len %u, num GLEs %u",
+		  __get_str(devname), __entry->qidx, __entry->sqe_idx,
+		  __entry->len, __entry->ngle)
+);
+
+TRACE_EVENT(funeth_tx_free,
+
+	TP_PROTO(const struct funeth_txq *txq,
+		 u32 sqe_idx,
+		 u32 num_sqes,
+		 u32 hw_head),
+
+	TP_ARGS(txq, sqe_idx, num_sqes, hw_head),
+
+	TP_STRUCT__entry(
+		__field(u32, qidx)
+		__field(u32, sqe_idx)
+		__field(u32, num_sqes)
+		__field(u32, hw_head)
+		__string(devname, txq->netdev->name)
+	),
+
+	TP_fast_assign(
+		__entry->qidx = txq->qidx;
+		__entry->sqe_idx = sqe_idx;
+		__entry->num_sqes = num_sqes;
+		__entry->hw_head = hw_head;
+		__assign_str(devname, txq->netdev->name);
+	),
+
+	TP_printk("%s: Txq %u, SQE idx %u, SQEs %u, HW head %u",
+		  __get_str(devname), __entry->qidx, __entry->sqe_idx,
+		  __entry->num_sqes, __entry->hw_head)
+);
+
+TRACE_EVENT(funeth_rx,
+
+	TP_PROTO(const struct funeth_rxq *rxq,
+		 u32 num_rqes,
+		 u32 pkt_len,
+		 u32 hash,
+		 u32 cls_vec),
+
+	TP_ARGS(rxq, num_rqes, pkt_len, hash, cls_vec),
+
+	TP_STRUCT__entry(
+		__field(u32, qidx)
+		__field(u32, cq_head)
+		__field(u32, num_rqes)
+		__field(u32, len)
+		__field(u32, hash)
+		__field(u32, cls_vec)
+		__string(devname, rxq->netdev->name)
+	),
+
+	TP_fast_assign(
+		__entry->qidx = rxq->qidx;
+		__entry->cq_head = rxq->cq_head;
+		__entry->num_rqes = num_rqes;
+		__entry->len = pkt_len;
+		__entry->hash = hash;
+		__entry->cls_vec = cls_vec;
+		__assign_str(devname, rxq->netdev->name);
+	),
+
+	TP_printk("%s: Rxq %u, CQ head %u, RQEs %u, len %u, hash %u, CV %#x",
+		  __get_str(devname), __entry->qidx, __entry->cq_head,
+		  __entry->num_rqes, __entry->len, __entry->hash,
+		  __entry->cls_vec)
+);
+
+#endif /* _TRACE_FUNETH_H */
+
+/* Below must be outside protection. */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE funeth_trace
+
+#include <trace/define_trace.h>