/* Forward declaration */
struct nfp_net_adapter;
-/*
- * The maximum number of descriptors is limited by design as
- * DPDK uses uint16_t variables for these values
- */
-#define NFP_NET_MAX_TX_DESC (32 * 1024)
-#define NFP_NET_MIN_TX_DESC 64
-
-#define NFP_NET_MAX_RX_DESC (32 * 1024)
-#define NFP_NET_MIN_RX_DESC 64
-
-/* Descriptor alignment */
-#define NFP_ALIGN_RING_DESC 128
-
#define NFP_TX_MAX_SEG UINT8_MAX
#define NFP_TX_MAX_MTU_SEG 8
nn_writel(val, addr);
}
-/* TX descriptor format */
-#define PCIE_DESC_TX_EOP (1 << 7)
-#define PCIE_DESC_TX_OFFSET_MASK (0x7f)
-
-/* Flags in the host TX descriptor */
-#define PCIE_DESC_TX_CSUM (1 << 7)
-#define PCIE_DESC_TX_IP4_CSUM (1 << 6)
-#define PCIE_DESC_TX_TCP_CSUM (1 << 5)
-#define PCIE_DESC_TX_UDP_CSUM (1 << 4)
-#define PCIE_DESC_TX_VLAN (1 << 3)
-#define PCIE_DESC_TX_LSO (1 << 2)
-#define PCIE_DESC_TX_ENCAP_NONE (0)
-#define PCIE_DESC_TX_ENCAP_VXLAN (1 << 1)
-#define PCIE_DESC_TX_ENCAP_GRE (1 << 0)
-
-struct nfp_net_tx_desc {
- union {
- struct {
- uint8_t dma_addr_hi; /* High bits of host buf address */
- __le16 dma_len; /* Length to DMA for this desc */
- uint8_t offset_eop; /* Offset in buf where pkt starts +
- * highest bit is eop flag.
- */
- __le32 dma_addr_lo; /* Low 32bit of host buf addr */
-
- __le16 mss; /* MSS to be used for LSO */
- uint8_t lso_hdrlen; /* LSO, where the data starts */
- uint8_t flags; /* TX Flags, see @PCIE_DESC_TX_* */
-
- union {
- struct {
- /*
- * L3 and L4 header offsets required
- * for TSOv2
- */
- uint8_t l3_offset;
- uint8_t l4_offset;
- };
- __le16 vlan; /* VLAN tag to add if indicated */
- };
- __le16 data_len; /* Length of frame + meta data */
- } __rte_packed;
- __le32 vals[4];
- };
-};
-
-struct nfp_net_txq {
- struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
-
- /*
- * Queue information: @qidx is the queue index from Linux's
- * perspective. @tx_qcidx is the index of the Queue
- * Controller Peripheral queue relative to the TX queue BAR.
- * @cnt is the size of the queue in number of
- * descriptors. @qcp_q is a pointer to the base of the queue
- * structure on the NFP
- */
- uint8_t *qcp_q;
-
- /*
- * Read and Write pointers. @wr_p and @rd_p are host side pointer,
- * they are free running and have little relation to the QCP pointers *
- * @qcp_rd_p is a local copy queue controller peripheral read pointer
- */
-
- uint32_t wr_p;
- uint32_t rd_p;
-
- uint32_t tx_count;
-
- uint32_t tx_free_thresh;
-
- /*
- * For each descriptor keep a reference to the mbuf and
- * DMA address used until completion is signalled.
- */
- struct {
- struct rte_mbuf *mbuf;
- } *txbufs;
-
- /*
- * Information about the host side queue location. @txds is
- * the virtual address for the queue, @dma is the DMA address
- * of the queue and @size is the size in bytes for the queue
- * (needed for free)
- */
- struct nfp_net_tx_desc *txds;
-
- /*
- * At this point 48 bytes have been used for all the fields in the
- * TX critical path. We have room for 8 bytes and still all placed
- * in a cache line. We are not using the threshold values below but
- * if we need to, we can add the most used in the remaining bytes.
- */
- uint32_t tx_rs_thresh; /* not used by now. Future? */
- uint32_t tx_pthresh; /* not used by now. Future? */
- uint32_t tx_hthresh; /* not used by now. Future? */
- uint32_t tx_wthresh; /* not used by now. Future? */
- uint16_t port_id;
- int qidx;
- int tx_qcidx;
- __le64 dma;
-} __rte_aligned(64);
-
-/* RX and freelist descriptor format */
-#define PCIE_DESC_RX_DD (1 << 7)
-#define PCIE_DESC_RX_META_LEN_MASK (0x7f)
-
-/* Flags in the RX descriptor */
-#define PCIE_DESC_RX_RSS (1 << 15)
-#define PCIE_DESC_RX_I_IP4_CSUM (1 << 14)
-#define PCIE_DESC_RX_I_IP4_CSUM_OK (1 << 13)
-#define PCIE_DESC_RX_I_TCP_CSUM (1 << 12)
-#define PCIE_DESC_RX_I_TCP_CSUM_OK (1 << 11)
-#define PCIE_DESC_RX_I_UDP_CSUM (1 << 10)
-#define PCIE_DESC_RX_I_UDP_CSUM_OK (1 << 9)
-#define PCIE_DESC_RX_SPARE (1 << 8)
-#define PCIE_DESC_RX_EOP (1 << 7)
-#define PCIE_DESC_RX_IP4_CSUM (1 << 6)
-#define PCIE_DESC_RX_IP4_CSUM_OK (1 << 5)
-#define PCIE_DESC_RX_TCP_CSUM (1 << 4)
-#define PCIE_DESC_RX_TCP_CSUM_OK (1 << 3)
-#define PCIE_DESC_RX_UDP_CSUM (1 << 2)
-#define PCIE_DESC_RX_UDP_CSUM_OK (1 << 1)
-#define PCIE_DESC_RX_VLAN (1 << 0)
-
-#define PCIE_DESC_RX_L4_CSUM_OK (PCIE_DESC_RX_TCP_CSUM_OK | \
- PCIE_DESC_RX_UDP_CSUM_OK)
-struct nfp_net_rx_desc {
- union {
- /* Freelist descriptor */
- struct {
- uint8_t dma_addr_hi;
- __le16 spare;
- uint8_t dd;
-
- __le32 dma_addr_lo;
- } __rte_packed fld;
-
- /* RX descriptor */
- struct {
- __le16 data_len;
- uint8_t reserved;
- uint8_t meta_len_dd;
-
- __le16 flags;
- __le16 vlan;
- } __rte_packed rxd;
-
- __le32 vals[2];
- };
-};
-
-struct nfp_net_rx_buff {
- struct rte_mbuf *mbuf;
-};
-
-struct nfp_net_rxq {
- struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
-
- /*
- * @qcp_fl and @qcp_rx are pointers to the base addresses of the
- * freelist and RX queue controller peripheral queue structures on the
- * NFP
- */
- uint8_t *qcp_fl;
- uint8_t *qcp_rx;
-
- /*
- * Read and Write pointers. @wr_p and @rd_p are host side
- * pointer, they are free running and have little relation to
- * the QCP pointers. @wr_p is where the driver adds new
- * freelist descriptors and @rd_p is where the driver start
- * reading descriptors for newly arrive packets from.
- */
- uint32_t rd_p;
-
- /*
- * For each buffer placed on the freelist, record the
- * associated SKB
- */
- struct nfp_net_rx_buff *rxbufs;
-
- /*
- * Information about the host side queue location. @rxds is
- * the virtual address for the queue
- */
- struct nfp_net_rx_desc *rxds;
-
- /*
- * The mempool is created by the user specifying a mbuf size.
- * We save here the reference of the mempool needed in the RX
- * path and the mbuf size for checking received packets can be
- * safely copied to the mbuf using the NFP_NET_RX_OFFSET
- */
- struct rte_mempool *mem_pool;
- uint16_t mbuf_size;
-
- /*
- * Next two fields are used for giving more free descriptors
- * to the NFP
- */
- uint16_t rx_free_thresh;
- uint16_t nb_rx_hold;
-
- /* the size of the queue in number of descriptors */
- uint16_t rx_count;
-
- /*
- * Fields above this point fit in a single cache line and are all used
- * in the RX critical path. Fields below this point are just used
- * during queue configuration or not used at all (yet)
- */
-
- /* referencing dev->data->port_id */
- uint16_t port_id;
-
- uint8_t crc_len; /* Not used by now */
- uint8_t drop_en; /* Not used by now */
-
- /* DMA address of the queue */
- __le64 dma;
-
- /*
- * Queue information: @qidx is the queue index from Linux's
- * perspective. @fl_qcidx is the index of the Queue
- * Controller peripheral queue relative to the RX queue BAR
- * used for the freelist and @rx_qcidx is the Queue Controller
- * Peripheral index for the RX queue.
- */
- int qidx;
- int fl_qcidx;
- int rx_qcidx;
-} __rte_aligned(64);
-
struct nfp_pf_dev {
/* Backpointer to associated pci device */
struct rte_pci_device *pci_dev;
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2014-2021 Netronome Systems, Inc.
+ * All rights reserved.
+ */
+
+/*
+ * vim:shiftwidth=8:noexpandtab
+ *
+ * @file dpdk/pmd/nfp_rxtx.h
+ *
+ * Netronome NFP Rx/Tx specific header file
+ */
+
+#ifndef _NFP_RXTX_H_
+#define _NFP_RXTX_H_
+
+#include <linux/types.h>
+#include <rte_io.h>
+
+/*
+ * The maximum number of descriptors is limited by design as
+ * DPDK uses uint16_t variables for these values
+ */
+#define NFP_NET_MAX_TX_DESC (32 * 1024)
+#define NFP_NET_MIN_TX_DESC 64
+
+#define NFP_NET_MAX_RX_DESC (32 * 1024)
+#define NFP_NET_MIN_RX_DESC 64
+
+/* Descriptor alignment */
+#define NFP_ALIGN_RING_DESC 128
+
+/* TX descriptor format */
+#define PCIE_DESC_TX_EOP (1 << 7)
+#define PCIE_DESC_TX_OFFSET_MASK (0x7f)
+
+/* Flags in the host TX descriptor */
+#define PCIE_DESC_TX_CSUM (1 << 7)
+#define PCIE_DESC_TX_IP4_CSUM (1 << 6)
+#define PCIE_DESC_TX_TCP_CSUM (1 << 5)
+#define PCIE_DESC_TX_UDP_CSUM (1 << 4)
+#define PCIE_DESC_TX_VLAN (1 << 3)
+#define PCIE_DESC_TX_LSO (1 << 2)
+#define PCIE_DESC_TX_ENCAP_NONE (0)
+#define PCIE_DESC_TX_ENCAP_VXLAN (1 << 1)
+#define PCIE_DESC_TX_ENCAP_GRE (1 << 0)
+
+struct nfp_net_tx_desc {
+ union {
+ struct {
+ uint8_t dma_addr_hi; /* High bits of host buf address */
+ __le16 dma_len; /* Length to DMA for this desc */
+ uint8_t offset_eop; /* Offset in buf where pkt starts +
+ * highest bit is eop flag.
+ */
+ __le32 dma_addr_lo; /* Low 32bit of host buf addr */
+
+ __le16 mss; /* MSS to be used for LSO */
+ uint8_t lso_hdrlen; /* LSO, where the data starts */
+ uint8_t flags; /* TX Flags, see @PCIE_DESC_TX_* */
+
+ union {
+ struct {
+ /*
+ * L3 and L4 header offsets required
+ * for TSOv2
+ */
+ uint8_t l3_offset;
+ uint8_t l4_offset;
+ };
+ __le16 vlan; /* VLAN tag to add if indicated */
+ };
+ __le16 data_len; /* Length of frame + meta data */
+ } __rte_packed;
+ __le32 vals[4];
+ };
+};
+
+struct nfp_net_txq {
+ struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
+
+ /*
+ * Queue information: @qidx is the queue index from Linux's
+ * perspective. @tx_qcidx is the index of the Queue
+ * Controller Peripheral queue relative to the TX queue BAR.
+ * @cnt is the size of the queue in number of
+ * descriptors. @qcp_q is a pointer to the base of the queue
+ * structure on the NFP
+ */
+ uint8_t *qcp_q;
+
+ /*
+ * Read and Write pointers. @wr_p and @rd_p are host side pointer,
+ * they are free running and have little relation to the QCP pointers *
+ * @qcp_rd_p is a local copy queue controller peripheral read pointer
+ */
+
+ uint32_t wr_p;
+ uint32_t rd_p;
+
+ uint32_t tx_count;
+
+ uint32_t tx_free_thresh;
+
+ /*
+ * For each descriptor keep a reference to the mbuf and
+ * DMA address used until completion is signalled.
+ */
+ struct {
+ struct rte_mbuf *mbuf;
+ } *txbufs;
+
+ /*
+ * Information about the host side queue location. @txds is
+ * the virtual address for the queue, @dma is the DMA address
+ * of the queue and @size is the size in bytes for the queue
+ * (needed for free)
+ */
+ struct nfp_net_tx_desc *txds;
+
+ /*
+ * At this point 48 bytes have been used for all the fields in the
+ * TX critical path. We have room for 8 bytes and still all placed
+ * in a cache line. We are not using the threshold values below but
+ * if we need to, we can add the most used in the remaining bytes.
+ */
+ uint32_t tx_rs_thresh; /* not used by now. Future? */
+ uint32_t tx_pthresh; /* not used by now. Future? */
+ uint32_t tx_hthresh; /* not used by now. Future? */
+ uint32_t tx_wthresh; /* not used by now. Future? */
+ uint16_t port_id;
+ int qidx;
+ int tx_qcidx;
+ __le64 dma;
+} __rte_aligned(64);
+
+/* RX and freelist descriptor format */
+#define PCIE_DESC_RX_DD (1 << 7)
+#define PCIE_DESC_RX_META_LEN_MASK (0x7f)
+
+/* Flags in the RX descriptor */
+#define PCIE_DESC_RX_RSS (1 << 15)
+#define PCIE_DESC_RX_I_IP4_CSUM (1 << 14)
+#define PCIE_DESC_RX_I_IP4_CSUM_OK (1 << 13)
+#define PCIE_DESC_RX_I_TCP_CSUM (1 << 12)
+#define PCIE_DESC_RX_I_TCP_CSUM_OK (1 << 11)
+#define PCIE_DESC_RX_I_UDP_CSUM (1 << 10)
+#define PCIE_DESC_RX_I_UDP_CSUM_OK (1 << 9)
+#define PCIE_DESC_RX_SPARE (1 << 8)
+#define PCIE_DESC_RX_EOP (1 << 7)
+#define PCIE_DESC_RX_IP4_CSUM (1 << 6)
+#define PCIE_DESC_RX_IP4_CSUM_OK (1 << 5)
+#define PCIE_DESC_RX_TCP_CSUM (1 << 4)
+#define PCIE_DESC_RX_TCP_CSUM_OK (1 << 3)
+#define PCIE_DESC_RX_UDP_CSUM (1 << 2)
+#define PCIE_DESC_RX_UDP_CSUM_OK (1 << 1)
+#define PCIE_DESC_RX_VLAN (1 << 0)
+
+#define PCIE_DESC_RX_L4_CSUM_OK (PCIE_DESC_RX_TCP_CSUM_OK | \
+ PCIE_DESC_RX_UDP_CSUM_OK)
+
+struct nfp_net_rx_desc {
+ union {
+ /* Freelist descriptor */
+ struct {
+ uint8_t dma_addr_hi;
+ __le16 spare;
+ uint8_t dd;
+
+ __le32 dma_addr_lo;
+ } __rte_packed fld;
+
+ /* RX descriptor */
+ struct {
+ __le16 data_len;
+ uint8_t reserved;
+ uint8_t meta_len_dd;
+
+ __le16 flags;
+ __le16 vlan;
+ } __rte_packed rxd;
+
+ __le32 vals[2];
+ };
+};
+
+struct nfp_net_rx_buff {
+ struct rte_mbuf *mbuf;
+};
+
+struct nfp_net_rxq {
+ struct nfp_net_hw *hw; /* Backpointer to nfp_net structure */
+
+ /*
+ * @qcp_fl and @qcp_rx are pointers to the base addresses of the
+ * freelist and RX queue controller peripheral queue structures on the
+ * NFP
+ */
+ uint8_t *qcp_fl;
+ uint8_t *qcp_rx;
+
+ /*
+ * Read and Write pointers. @wr_p and @rd_p are host side
+ * pointer, they are free running and have little relation to
+ * the QCP pointers. @wr_p is where the driver adds new
+ * freelist descriptors and @rd_p is where the driver start
+ * reading descriptors for newly arrive packets from.
+ */
+ uint32_t rd_p;
+
+ /*
+ * For each buffer placed on the freelist, record the
+ * associated SKB
+ */
+ struct nfp_net_rx_buff *rxbufs;
+
+ /*
+ * Information about the host side queue location. @rxds is
+ * the virtual address for the queue
+ */
+ struct nfp_net_rx_desc *rxds;
+
+ /*
+ * The mempool is created by the user specifying a mbuf size.
+ * We save here the reference of the mempool needed in the RX
+ * path and the mbuf size for checking received packets can be
+ * safely copied to the mbuf using the NFP_NET_RX_OFFSET
+ */
+ struct rte_mempool *mem_pool;
+ uint16_t mbuf_size;
+
+ /*
+ * Next two fields are used for giving more free descriptors
+ * to the NFP
+ */
+ uint16_t rx_free_thresh;
+ uint16_t nb_rx_hold;
+
+ /* the size of the queue in number of descriptors */
+ uint16_t rx_count;
+
+ /*
+ * Fields above this point fit in a single cache line and are all used
+ * in the RX critical path. Fields below this point are just used
+ * during queue configuration or not used at all (yet)
+ */
+
+ /* referencing dev->data->port_id */
+ uint16_t port_id;
+
+ uint8_t crc_len; /* Not used by now */
+ uint8_t drop_en; /* Not used by now */
+
+ /* DMA address of the queue */
+ __le64 dma;
+
+ /*
+ * Queue information: @qidx is the queue index from Linux's
+ * perspective. @fl_qcidx is the index of the Queue
+ * Controller peripheral queue relative to the RX queue BAR
+ * used for the freelist and @rx_qcidx is the Queue Controller
+ * Peripheral index for the RX queue.
+ */
+ int qidx;
+ int fl_qcidx;
+ int rx_qcidx;
+} __rte_aligned(64);
+
+#endif /* _NFP_RXTX_H_ */
+/*
+ * Local variables:
+ * c-file-style: "Linux"
+ * indent-tabs-mode: t
+ * End:
+ */
+
git.droids-corp.org / dpdk.git / commitdiff