d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
3d491e5531
numam-dpdk/drivers/net/nfp/nfp_rxtx.h
Konstantin Ananyev 8d7d4fcdca ethdev: change input parameters for Rx queue count 
Currently majority of fast-path ethdev ops take pointers to internal
queue data structures as an input parameter.
While eth_rx_queue_count() takes a pointer to rte_eth_dev and queue
index.
For future work to hide rte_eth_devices[] and friends it would be
plausible to unify parameters list of all fast-path ethdev ops.
This patch changes eth_rx_queue_count() to accept pointer to internal
queue data as input parameter.
While this change is transparent to user, it still counts as an ABI change,
as eth_rx_queue_count_t is used by ethdev public inline function
rte_eth_rx_queue_count().

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Feifei Wang <feifei.wang2@arm.com>
2021-10-13 22:14:58 +02:00

303 lines
8.5 KiB
C
Raw Blame History

/* 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>
#define NFP_DESC_META_LEN(d) ((d)->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
#define NFP_HASH_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 4)
#define NFP_HASH_TYPE_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 8)
#define RTE_MBUF_DMA_ADDR_DEFAULT(mb) \
((uint64_t)((mb)->buf_iova + RTE_PKTMBUF_HEADROOM))
/*
* 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 256
#define NFP_NET_MAX_RX_DESC (32 * 1024)
#define NFP_NET_MIN_RX_DESC 256
/* 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);
int nfp_net_rx_freelist_setup(struct rte_eth_dev *dev);
uint32_t nfp_net_rx_queue_count(void *rx_queue);
uint16_t nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
void nfp_net_rx_queue_release(struct rte_eth_dev *dev, uint16_t queue_idx);
void nfp_net_reset_rx_queue(struct nfp_net_rxq *rxq);
int nfp_net_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp);
void nfp_net_tx_queue_release(struct rte_eth_dev *dev, uint16_t queue_idx);
void nfp_net_reset_tx_queue(struct nfp_net_txq *txq);
int nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
const struct rte_eth_txconf *tx_conf);
uint16_t nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
#endif /* _NFP_RXTX_H_ */
/*
* Local variables:
* c-file-style: "Linux"
* indent-tabs-mode: t
* End:
*/
Reference in New Issue View Git Blame Copy Permalink