diff options
Diffstat (limited to 'drivers/net/i40e/i40e_rxtx.h')
| -rw-r--r-- | drivers/net/i40e/i40e_rxtx.h | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h new file mode 100644 index 00000000..98179f00 --- /dev/null +++ b/drivers/net/i40e/i40e_rxtx.h @@ -0,0 +1,258 @@ +/*- + * 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_ */ |