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Diffstat (limited to 'src/dpdk22/drivers/net/mlx5/mlx5_rxtx.h')
| -rw-r--r-- | src/dpdk22/drivers/net/mlx5/mlx5_rxtx.h | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/dpdk22/drivers/net/mlx5/mlx5_rxtx.h b/src/dpdk22/drivers/net/mlx5/mlx5_rxtx.h new file mode 100644 index 00000000..e1e19251 --- /dev/null +++ b/src/dpdk22/drivers/net/mlx5/mlx5_rxtx.h @@ -0,0 +1,274 @@ +/*- + * BSD LICENSE + * + * Copyright 2015 6WIND S.A. + * Copyright 2015 Mellanox. + * + * 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 6WIND S.A. 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 RTE_PMD_MLX5_RXTX_H_ +#define RTE_PMD_MLX5_RXTX_H_ + +#include <stddef.h> +#include <stdint.h> + +/* Verbs header. */ +/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ +#ifdef PEDANTIC +#pragma GCC diagnostic ignored "-pedantic" +#endif +#include <infiniband/verbs.h> +#ifdef PEDANTIC +#pragma GCC diagnostic error "-pedantic" +#endif + +/* DPDK headers don't like -pedantic. */ +#ifdef PEDANTIC +#pragma GCC diagnostic ignored "-pedantic" +#endif +#include <rte_mbuf.h> +#include <rte_mempool.h> +#ifdef PEDANTIC +#pragma GCC diagnostic error "-pedantic" +#endif + +#include "mlx5_utils.h" +#include "mlx5.h" +#include "mlx5_autoconf.h" +#include "mlx5_defs.h" + +struct mlx5_rxq_stats { + unsigned int idx; /**< Mapping index. */ +#ifdef MLX5_PMD_SOFT_COUNTERS + uint64_t ipackets; /**< Total of successfully received packets. */ + uint64_t ibytes; /**< Total of successfully received bytes. */ +#endif + uint64_t idropped; /**< Total of packets dropped when RX ring full. */ + uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */ +}; + +struct mlx5_txq_stats { + unsigned int idx; /**< Mapping index. */ +#ifdef MLX5_PMD_SOFT_COUNTERS + uint64_t opackets; /**< Total of successfully sent packets. */ + uint64_t obytes; /**< Total of successfully sent bytes. */ +#endif + uint64_t odropped; /**< Total of packets not sent when TX ring full. */ +}; + +/* RX element (scattered packets). */ +struct rxq_elt_sp { + struct ibv_sge sges[MLX5_PMD_SGE_WR_N]; /* Scatter/Gather Elements. */ + struct rte_mbuf *bufs[MLX5_PMD_SGE_WR_N]; /* SGEs buffers. */ +}; + +/* RX element. */ +struct rxq_elt { + struct ibv_sge sge; /* Scatter/Gather Element. */ + struct rte_mbuf *buf; /* SGE buffer. */ +}; + +struct priv; + +/* RX queue descriptor. */ +struct rxq { + struct priv *priv; /* Back pointer to private data. */ + struct rte_mempool *mp; /* Memory Pool for allocations. */ + struct ibv_mr *mr; /* Memory Region (for mp). */ + struct ibv_cq *cq; /* Completion Queue. */ + struct ibv_exp_wq *wq; /* Work Queue. */ + struct ibv_exp_wq_family *if_wq; /* WQ burst interface. */ + struct ibv_exp_cq_family *if_cq; /* CQ interface. */ + unsigned int port_id; /* Port ID for incoming packets. */ + unsigned int elts_n; /* (*elts)[] length. */ + unsigned int elts_head; /* Current index in (*elts)[]. */ + union { + struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */ + struct rxq_elt (*no_sp)[]; /* RX elements. */ + } elts; + unsigned int sp:1; /* Use scattered RX elements. */ + unsigned int csum:1; /* Enable checksum offloading. */ + unsigned int csum_l2tun:1; /* Same for L2 tunnels. */ + uint32_t mb_len; /* Length of a mp-issued mbuf. */ + struct mlx5_rxq_stats stats; /* RX queue counters. */ + unsigned int socket; /* CPU socket ID for allocations. */ + struct ibv_exp_res_domain *rd; /* Resource Domain. */ +}; + +/* Hash RX queue types. */ +enum hash_rxq_type { + HASH_RXQ_TCPV4, + HASH_RXQ_UDPV4, + HASH_RXQ_IPV4, +#ifdef HAVE_FLOW_SPEC_IPV6 + HASH_RXQ_TCPV6, + HASH_RXQ_UDPV6, + HASH_RXQ_IPV6, +#endif /* HAVE_FLOW_SPEC_IPV6 */ + HASH_RXQ_ETH, +}; + +/* Flow structure with Ethernet specification. It is packed to prevent padding + * between attr and spec as this layout is expected by libibverbs. */ +struct flow_attr_spec_eth { + struct ibv_exp_flow_attr attr; + struct ibv_exp_flow_spec_eth spec; +} __attribute__((packed)); + +/* Define a struct flow_attr_spec_eth object as an array of at least + * "size" bytes. Room after the first index is normally used to store + * extra flow specifications. */ +#define FLOW_ATTR_SPEC_ETH(name, size) \ + struct flow_attr_spec_eth name \ + [((size) / sizeof(struct flow_attr_spec_eth)) + \ + !!((size) % sizeof(struct flow_attr_spec_eth))] + +/* Initialization data for hash RX queue. */ +struct hash_rxq_init { + uint64_t hash_fields; /* Fields that participate in the hash. */ + uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */ + unsigned int flow_priority; /* Flow priority to use. */ + union { + struct { + enum ibv_exp_flow_spec_type type; + uint16_t size; + } hdr; + struct ibv_exp_flow_spec_tcp_udp tcp_udp; + struct ibv_exp_flow_spec_ipv4 ipv4; +#ifdef HAVE_FLOW_SPEC_IPV6 + struct ibv_exp_flow_spec_ipv6 ipv6; +#endif /* HAVE_FLOW_SPEC_IPV6 */ + struct ibv_exp_flow_spec_eth eth; + } flow_spec; /* Flow specification template. */ + const struct hash_rxq_init *underlayer; /* Pointer to underlayer. */ +}; + +/* Initialization data for indirection table. */ +struct ind_table_init { + unsigned int max_size; /* Maximum number of WQs. */ + /* Hash RX queues using this table. */ + unsigned int hash_types; + unsigned int hash_types_n; +}; + +enum hash_rxq_flow_type { + HASH_RXQ_FLOW_TYPE_MAC, + HASH_RXQ_FLOW_TYPE_PROMISC, + HASH_RXQ_FLOW_TYPE_ALLMULTI, +}; + +struct hash_rxq { + struct priv *priv; /* Back pointer to private data. */ + struct ibv_qp *qp; /* Hash RX QP. */ + enum hash_rxq_type type; /* Hash RX queue type. */ + /* MAC flow steering rules, one per VLAN ID. */ + struct ibv_exp_flow *mac_flow[MLX5_MAX_MAC_ADDRESSES][MLX5_MAX_VLAN_IDS]; + struct ibv_exp_flow *promisc_flow; /* Promiscuous flow. */ + struct ibv_exp_flow *allmulti_flow; /* Multicast flow. */ +}; + +/* TX element. */ +struct txq_elt { + struct rte_mbuf *buf; +}; + +/* Linear buffer type. It is used when transmitting buffers with too many + * segments that do not fit the hardware queue (see max_send_sge). + * Extra segments are copied (linearized) in such buffers, replacing the + * last SGE during TX. + * The size is arbitrary but large enough to hold a jumbo frame with + * 8 segments considering mbuf.buf_len is about 2048 bytes. */ +typedef uint8_t linear_t[16384]; + +/* TX queue descriptor. */ +struct txq { + struct priv *priv; /* Back pointer to private data. */ + struct { + const struct rte_mempool *mp; /* Cached Memory Pool. */ + struct ibv_mr *mr; /* Memory Region (for mp). */ + uint32_t lkey; /* mr->lkey */ + } mp2mr[MLX5_PMD_TX_MP_CACHE]; /* MP to MR translation table. */ + struct ibv_cq *cq; /* Completion Queue. */ + struct ibv_qp *qp; /* Queue Pair. */ + struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */ + struct ibv_exp_cq_family *if_cq; /* CQ interface. */ +#if MLX5_PMD_MAX_INLINE > 0 + uint32_t max_inline; /* Max inline send size <= MLX5_PMD_MAX_INLINE. */ +#endif + unsigned int elts_n; /* (*elts)[] length. */ + struct txq_elt (*elts)[]; /* TX elements. */ + unsigned int elts_head; /* Current index in (*elts)[]. */ + unsigned int elts_tail; /* First element awaiting completion. */ + unsigned int elts_comp; /* Number of completion requests. */ + unsigned int elts_comp_cd; /* Countdown for next completion request. */ + unsigned int elts_comp_cd_init; /* Initial value for countdown. */ + struct mlx5_txq_stats stats; /* TX queue counters. */ + linear_t (*elts_linear)[]; /* Linearized buffers. */ + struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */ + unsigned int socket; /* CPU socket ID for allocations. */ + struct ibv_exp_res_domain *rd; /* Resource Domain. */ +}; + +/* mlx5_rxq.c */ + +extern const struct hash_rxq_init hash_rxq_init[]; +extern const unsigned int hash_rxq_init_n; + +extern uint8_t rss_hash_default_key[]; +extern const size_t rss_hash_default_key_len; + +size_t hash_rxq_flow_attr(const struct hash_rxq *, struct ibv_exp_flow_attr *, + size_t); +int priv_create_hash_rxqs(struct priv *); +void priv_destroy_hash_rxqs(struct priv *); +int priv_allow_flow_type(struct priv *, enum hash_rxq_flow_type); +void rxq_cleanup(struct rxq *); +int rxq_rehash(struct rte_eth_dev *, struct rxq *); +int rxq_setup(struct rte_eth_dev *, struct rxq *, uint16_t, unsigned int, + const struct rte_eth_rxconf *, struct rte_mempool *); +int mlx5_rx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int, + const struct rte_eth_rxconf *, struct rte_mempool *); +void mlx5_rx_queue_release(void *); + +/* mlx5_txq.c */ + +void txq_cleanup(struct txq *); +int mlx5_tx_queue_setup(struct rte_eth_dev *, uint16_t, uint16_t, unsigned int, + const struct rte_eth_txconf *); +void mlx5_tx_queue_release(void *); + +/* mlx5_rxtx.c */ + +void txq_mp2mr_iter(const struct rte_mempool *, void *); +uint16_t mlx5_tx_burst(void *, struct rte_mbuf **, uint16_t); +uint16_t mlx5_rx_burst_sp(void *, struct rte_mbuf **, uint16_t); +uint16_t mlx5_rx_burst(void *, struct rte_mbuf **, uint16_t); +uint16_t removed_tx_burst(void *, struct rte_mbuf **, uint16_t); +uint16_t removed_rx_burst(void *, struct rte_mbuf **, uint16_t); + +#endif /* RTE_PMD_MLX5_RXTX_H_ */ |