Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/vnic.h b/drivers/infiniband/hw/hfi1/vnic.h
new file mode 100644
index 0000000000..34f03e7770
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/vnic.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
+/*
+ * Copyright(c) 2017 - 2020 Intel Corporation.
+ */
+
+#ifndef _HFI1_VNIC_H
+#define _HFI1_VNIC_H
+#include <rdma/opa_vnic.h>
+#include "hfi.h"
+#include "sdma.h"
+
+#define HFI1_VNIC_MAX_TXQ     16
+#define HFI1_VNIC_MAX_PAD     12
+
+/* L4 header definitions */
+#define HFI1_VNIC_L4_HDR_OFFSET  OPA_VNIC_L2_HDR_LEN
+
+#define HFI1_VNIC_GET_L4_HDR(data)   \
+	(*((u16 *)((u8 *)(data) + HFI1_VNIC_L4_HDR_OFFSET)))
+
+#define HFI1_VNIC_GET_VESWID(data)   \
+	(HFI1_VNIC_GET_L4_HDR(data) & 0xFFF)
+
+/* Service class */
+#define HFI1_VNIC_SC_OFFSET_LOW 6
+#define HFI1_VNIC_SC_OFFSET_HI  7
+#define HFI1_VNIC_SC_SHIFT      4
+
+#define HFI1_VNIC_MAX_QUEUE 16
+#define HFI1_NUM_VNIC_CTXT 8
+
+/**
+ * struct hfi1_vnic_sdma - VNIC per Tx ring SDMA information
+ * @dd - device data pointer
+ * @sde - sdma engine
+ * @vinfo - vnic info pointer
+ * @wait - iowait structure
+ * @stx - sdma tx request
+ * @state - vnic Tx ring SDMA state
+ * @q_idx - vnic Tx queue index
+ */
+struct hfi1_vnic_sdma {
+	struct hfi1_devdata *dd;
+	struct sdma_engine  *sde;
+	struct hfi1_vnic_vport_info *vinfo;
+	struct iowait wait;
+	struct sdma_txreq stx;
+	unsigned int state;
+	u8 q_idx;
+	bool pkts_sent;
+};
+
+/**
+ * struct hfi1_vnic_rx_queue - HFI1 VNIC receive queue
+ * @idx: queue index
+ * @vinfo: pointer to vport information
+ * @netdev: network device
+ * @napi: netdev napi structure
+ * @skbq: queue of received socket buffers
+ */
+struct hfi1_vnic_rx_queue {
+	u8                           idx;
+	struct hfi1_vnic_vport_info *vinfo;
+	struct net_device           *netdev;
+	struct napi_struct           napi;
+};
+
+/**
+ * struct hfi1_vnic_vport_info - HFI1 VNIC virtual port information
+ * @dd: device data pointer
+ * @netdev: net device pointer
+ * @flags: state flags
+ * @lock: vport lock
+ * @num_tx_q: number of transmit queues
+ * @num_rx_q: number of receive queues
+ * @vesw_id: virtual switch id
+ * @rxq: Array of receive queues
+ * @stats: per queue stats
+ * @sdma: VNIC SDMA structure per TXQ
+ */
+struct hfi1_vnic_vport_info {
+	struct hfi1_devdata *dd;
+	struct net_device   *netdev;
+	unsigned long        flags;
+
+	/* Lock used around state updates */
+	struct mutex         lock;
+
+	u8  num_tx_q;
+	u8  num_rx_q;
+	u16 vesw_id;
+	struct hfi1_vnic_rx_queue rxq[HFI1_NUM_VNIC_CTXT];
+
+	struct opa_vnic_stats  stats[HFI1_VNIC_MAX_QUEUE];
+	struct hfi1_vnic_sdma  sdma[HFI1_VNIC_MAX_TXQ];
+};
+
+#define v_dbg(format, arg...) \
+	netdev_dbg(vinfo->netdev, format, ## arg)
+#define v_err(format, arg...) \
+	netdev_err(vinfo->netdev, format, ## arg)
+#define v_info(format, arg...) \
+	netdev_info(vinfo->netdev, format, ## arg)
+
+/* vnic hfi1 internal functions */
+void hfi1_vnic_setup(struct hfi1_devdata *dd);
+int hfi1_vnic_txreq_init(struct hfi1_devdata *dd);
+void hfi1_vnic_txreq_deinit(struct hfi1_devdata *dd);
+
+void hfi1_vnic_bypass_rcv(struct hfi1_packet *packet);
+void hfi1_vnic_sdma_init(struct hfi1_vnic_vport_info *vinfo);
+bool hfi1_vnic_sdma_write_avail(struct hfi1_vnic_vport_info *vinfo,
+				u8 q_idx);
+
+/* vnic rdma netdev operations */
+struct net_device *hfi1_vnic_alloc_rn(struct ib_device *device,
+				      u32 port_num,
+				      enum rdma_netdev_t type,
+				      const char *name,
+				      unsigned char name_assign_type,
+				      void (*setup)(struct net_device *));
+int hfi1_vnic_send_dma(struct hfi1_devdata *dd, u8 q_idx,
+		       struct hfi1_vnic_vport_info *vinfo,
+		       struct sk_buff *skb, u64 pbc, u8 plen);
+
+#endif /* _HFI1_VNIC_H */