/*-
* BSD LICENSE
*
* Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _I40E_RXTX_H_
#define _I40E_RXTX_H_
/**
* 32 bits tx flags, high 16 bits for L2TAG1 (VLAN),
* low 16 bits for others.
*/
#define I40E_TX_FLAG_L2TAG1_SHIFT 16
#define I40E_TX_FLAG_L2TAG1_MASK 0xffff0000
#define I40E_TX_FLAG_CSUM ((uint32_t)(1 << 0))
#define I40E_TX_FLAG_INSERT_VLAN ((uint32_t)(1 << 1))
#define I40E_TX_FLAG_TSYN ((uint32_t)(1 << 2))
#define RTE_PMD_I40E_RX_MAX_BURST 32
#define RTE_PMD_I40E_TX_MAX_BURST 32
#define RTE_I40E_VPMD_RX_BURST 32
#define RTE_I40E_VPMD_TX_BURST 32
#define RTE_I40E_RXQ_REARM_THRESH 32
#define RTE_I40E_MAX_RX_BURST RTE_I40E_RXQ_REARM_THRESH
#define RTE_I40E_TX_MAX_FREE_BUF_SZ 64
#define RTE_I40E_DESCS_PER_LOOP 4
#define I40E_RXBUF_SZ_1024 1024
#define I40E_RXBUF_SZ_2048 2048
/* In none-PXE mode QLEN must be whole number of 32 descriptors. */
#define I40E_ALIGN_RING_DESC 32
#define I40E_MIN_RING_DESC 64
#define I40E_MAX_RING_DESC 4096
#undef container_of
#define container_of(ptr, type, member) ({ \
typeof(((type *)0)->member)(*__mptr) = (ptr); \
(type *)((char *)__mptr - offsetof(type, member)); })
#define I40E_TD_CMD (I40E_TX_DESC_CMD_ICRC |\
I40E_TX_DESC_CMD_EOP)
enum i40e_header_split_mode {
i40e_header_split_none = 0,
i40e_header_split_enabled = 1,
i40e_header_split_always = 2,
i40e_header_split_reserved
};
#define I40E_HEADER_SPLIT_NONE ((uint8_t)0)
#define I40E_HEADER_SPLIT_L2 ((uint8_t)(1 << 0))
#define I40E_HEADER_SPLIT_IP ((uint8_t)(1 << 1))
#define I40E_HEADER_SPLIT_UDP_TCP ((uint8_t)(1 << 2))
#define I40E_HEADER_SPLIT_SCTP ((uint8_t)(1 << 3))
#define I40E_HEADER_SPLIT_ALL (I40E_HEADER_SPLIT_L2 | \
I40E_HEADER_SPLIT_IP | \
I40E_HEADER_SPLIT_UDP_TCP | \
I40E_HEADER_SPLIT_SCTP)
/* HW desc structure, both 16-byte and 32-byte types are supported */
#ifdef RTE_LIBRTE_I40E_16BYTE_RX_DESC
#define i40e_rx_desc i40e_16byte_rx_desc
#else
#define i40e_rx_desc i40e_32byte_rx_desc
#endif
struct i40e_rx_entry {
struct rte_mbuf *mbuf;
};
/*
* Structure associated with each RX queue.
*/
struct i40e_rx_queue {
struct rte_mempool *mp; /**< mbuf pool to populate RX ring */
volatile union i40e_rx_desc *rx_ring;/**< RX ring virtual address */
uint64_t rx_ring_phys_addr; /**< RX ring DMA address */
struct i40e_rx_entry *sw_ring; /**< address of RX soft ring */
uint16_t nb_rx_desc; /**< number of RX descriptors */
uint16_t rx_free_thresh; /**< max free RX desc to hold */
uint16_t rx_tail; /**< current value of tail */
uint16_t nb_rx_hold; /**< number of held free RX desc */
struct rte_mbuf *pkt_first_seg; /**< first segment of current packet */
struct rte_mbuf *pkt_last_seg; /**< last segment of current packet */
#ifdef RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC
uint16_t rx_nb_avail; /**< number of staged packets ready */
uint16_t rx_next_avail; /**< index of next staged packets */
uint16_t rx_free_trigger; /**< triggers rx buffer allocation */
struct rte_mbuf fake_mbuf; /**< dummy mbuf */
struct rte_mbuf *rx_stage[RTE_PMD_I40E_RX_MAX_BURST * 2];
#endif
uint16_t rxrearm_nb; /**< number of remaining to be re-armed */
uint16_t rxrearm_start; /**< the idx we start the re-arming from */
uint64_t mbuf_initializer; /**< value to init mbufs */
uint8_t port_id; /**< device port ID */
uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise */
uint16_t queue_id; /**< RX queue index */
uint16_t reg_idx; /**< RX queue register index */
uint8_t drop_en; /**< if not 0, set register bit */
volatile uint8_t *qrx_tail; /**< register address of tail */
struct i40e_vsi *vsi; /**< the VSI this queue belongs to */
uint16_t rx_buf_len; /* The packet buffer size */
uint16_t rx_hdr_len; /* The header buffer size */
uint16_t max_pkt_len; /* Maximum packet length */
uint8_t hs_mode; /* Header Split mode */
bool q_set; /**< indicate if rx queue has been configured */
bool rx_deferred_start; /**< don't start this queue in dev start */
uint16_t rx_using_sse; /**<flag indicate the usage of vPMD for rx */
uint8_t dcb_tc; /**< Traffic class of rx queue */
};
struct i40e_tx_entry {
struct rte_mbuf *mbuf;
uint16_t next_id;
uint16_t last_id;
};
/*
* Structure associated with each TX queue.
*/
struct i40e_tx_queue {
uint16_t nb_tx_desc; /**< number of TX descriptors */
uint64_t tx_ring_phys_addr; /**< TX ring DMA address */
volatile struct i40e_tx_desc *tx_ring; /**< TX ring virtual address */
struct i40e_tx_entry *sw_ring; /**< virtual address of SW ring */
uint16_t tx_tail; /**< current value of tail register */
volatile uint8_t *qtx_tail; /**< register address of tail */
uint16_t nb_tx_used; /**< number of TX desc used since RS bit set */
/**< index to last TX descriptor to have been cleaned */
uint16_t last_desc_cleaned;
/**< Total number of TX descriptors ready to be allocated. */
uint16_t nb_tx_free;
/**< Start freeing TX buffers if there are less free descriptors than
this value. */
uint16_t tx_free_thresh;
/** Number of TX descriptors to use before RS bit is set. */
uint16_t tx_rs_thresh;
uint8_t pthresh; /**< Prefetch threshold register. */
uint8_t hthresh; /**< Host threshold register. */
uint8_t wthresh; /**< Write-back threshold reg. */
uint8_t port_id; /**< Device port identifier. */
uint16_t queue_id; /**< TX queue index. */
uint16_t reg_idx;
uint32_t txq_flags;
struct i40e_vsi *vsi; /**< the VSI this queue belongs to */
uint16_t tx_next_dd;
uint16_t tx_next_rs;
bool q_set; /**< indicate if tx queue has been configured */
bool tx_deferred_start; /**< don't start this queue in dev start */
uint8_t dcb_tc; /**< Traffic class of tx queue */
};
/** Offload features */
union i40e_tx_offload {
uint64_t data;
struct {
uint64_t l2_len:7; /**< L2 (MAC) Header Length. */
uint64_t l3_len:9; /**< L3 (IP) Header Length. */
uint64_t l4_len:8; /**< L4 Header Length. */
uint64_t tso_segsz:16; /**< TCP TSO segment size */
uint64_t outer_l2_len:8; /**< outer L2 Header Length */
uint64_t outer_l3_len:16; /**< outer L3 Header Length */
};
};
int i40e_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id);
int i40e_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id);
int i40e_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
int i40e_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
const uint32_t *i40e_dev_supported_ptypes_get(struct rte_eth_dev *dev);
int i40e_dev_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);
int i40e_dev_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);
void i40e_dev_rx_queue_release(void *rxq);
void i40e_dev_tx_queue_release(void *txq);
uint16_t i40e_recv_pkts(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t i40e_recv_scattered_pkts(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t i40e_xmit_pkts(void *tx_queue,
struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int i40e_tx_queue_init(struct i40e_tx_queue *txq);
int i40e_rx_queue_init(struct i40e_rx_queue *rxq);
void i40e_free_tx_resources(struct i40e_tx_queue *txq);
void i40e_free_rx_resources(struct i40e_rx_queue *rxq);
void i40e_dev_clear_queues(struct rte_eth_dev *dev);
void i40e_dev_free_queues(struct rte_eth_dev *dev);
void i40e_reset_rx_queue(struct i40e_rx_queue *rxq);
void i40e_reset_tx_queue(struct i40e_tx_queue *txq);
void i40e_tx_queue_release_mbufs(struct i40e_tx_queue *txq);
int i40e_alloc_rx_queue_mbufs(struct i40e_rx_queue *rxq);
void i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq);
uint32_t i40e_dev_rx_queue_count(struct rte_eth_dev *dev,
uint16_t rx_queue_id);
int i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset);
uint16_t i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
uint16_t i40e_recv_scattered_pkts_vec(void *rx_queue,
struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
int i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev);
int i40e_rxq_vec_setup(struct i40e_rx_queue *rxq);
int i40e_txq_vec_setup(struct i40e_tx_queue *txq);
void i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq);
uint16_t i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
void i40e_set_rx_function(struct rte_eth_dev *dev);
void i40e_set_tx_function_flag(struct rte_eth_dev *dev,
struct i40e_tx_queue *txq);
void i40e_set_tx_function(struct rte_eth_dev *dev);
#endif /* _I40E_RXTX_H_ */