0ab6626beb
The number of descriptors must be a multiple of MLX4_PMD_SGE_WR_N. Signed-off-by: Or Ami <ora@mellanox.com> Signed-off-by: Olga Shern <olgas@mellanox.com> Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
4714 lines
118 KiB
C
4714 lines
118 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2012-2015 6WIND S.A.
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* Copyright 2012 Mellanox.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Known limitations:
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* - Multiple RX VLAN filters can be configured, but only the first one
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* works properly.
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* - RSS hash key and options cannot be modified.
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* - Hardware counters aren't implemented.
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*/
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/* System headers. */
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <limits.h>
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#include <assert.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <dirent.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <linux/if.h>
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#include <linux/ethtool.h>
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#include <linux/sockios.h>
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/* Verbs header. */
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/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
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#ifdef PEDANTIC
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#pragma GCC diagnostic ignored "-pedantic"
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#endif
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#include <infiniband/verbs.h>
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#ifdef PEDANTIC
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#pragma GCC diagnostic error "-pedantic"
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#endif
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/* DPDK headers don't like -pedantic. */
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#ifdef PEDANTIC
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#pragma GCC diagnostic ignored "-pedantic"
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#endif
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#include <rte_config.h>
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#include <rte_ether.h>
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#include <rte_ethdev.h>
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#include <rte_dev.h>
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#include <rte_mbuf.h>
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#include <rte_errno.h>
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#include <rte_mempool.h>
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#include <rte_prefetch.h>
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#include <rte_malloc.h>
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#include <rte_spinlock.h>
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#include <rte_atomic.h>
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#include <rte_version.h>
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#include <rte_log.h>
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#ifdef PEDANTIC
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#pragma GCC diagnostic error "-pedantic"
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#endif
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/* Generated configuration header. */
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#include "mlx4_autoconf.h"
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/* PMD header. */
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#include "mlx4.h"
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/* Runtime logging through RTE_LOG() is enabled when not in debugging mode.
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* Intermediate LOG_*() macros add the required end-of-line characters. */
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#ifndef NDEBUG
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#define INFO(...) DEBUG(__VA_ARGS__)
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#define WARN(...) DEBUG(__VA_ARGS__)
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#define ERROR(...) DEBUG(__VA_ARGS__)
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#else
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#define LOG__(level, m, ...) \
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RTE_LOG(level, PMD, MLX4_DRIVER_NAME ": " m "%c", __VA_ARGS__)
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#define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
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#define INFO(...) LOG_(INFO, __VA_ARGS__)
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#define WARN(...) LOG_(WARNING, __VA_ARGS__)
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#define ERROR(...) LOG_(ERR, __VA_ARGS__)
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#endif
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/* Convenience macros for accessing mbuf fields. */
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#define NEXT(m) ((m)->next)
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#define DATA_LEN(m) ((m)->data_len)
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#define PKT_LEN(m) ((m)->pkt_len)
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#define DATA_OFF(m) ((m)->data_off)
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#define SET_DATA_OFF(m, o) ((m)->data_off = (o))
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#define NB_SEGS(m) ((m)->nb_segs)
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#define PORT(m) ((m)->port)
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/* Work Request ID data type (64 bit). */
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typedef union {
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struct {
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uint32_t id;
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uint16_t offset;
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} data;
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uint64_t raw;
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} wr_id_t;
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#define WR_ID(o) (((wr_id_t *)&(o))->data)
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/* Compile-time check. */
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static inline void wr_id_t_check(void)
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{
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wr_id_t check[1 + (2 * -!(sizeof(wr_id_t) == sizeof(uint64_t)))];
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(void)check;
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(void)wr_id_t_check;
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}
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/* If raw send operations are available, use them since they are faster. */
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#ifdef SEND_RAW_WR_SUPPORT
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typedef struct ibv_send_wr_raw mlx4_send_wr_t;
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#define mlx4_post_send ibv_post_send_raw
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#else
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typedef struct ibv_send_wr mlx4_send_wr_t;
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#define mlx4_post_send ibv_post_send
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#endif
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struct mlx4_rxq_stats {
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unsigned int idx; /**< Mapping index. */
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#ifdef MLX4_PMD_SOFT_COUNTERS
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uint64_t ipackets; /**< Total of successfully received packets. */
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uint64_t ibytes; /**< Total of successfully received bytes. */
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#endif
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uint64_t idropped; /**< Total of packets dropped when RX ring full. */
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uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */
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};
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struct mlx4_txq_stats {
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unsigned int idx; /**< Mapping index. */
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#ifdef MLX4_PMD_SOFT_COUNTERS
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uint64_t opackets; /**< Total of successfully sent packets. */
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uint64_t obytes; /**< Total of successfully sent bytes. */
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#endif
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uint64_t odropped; /**< Total of packets not sent when TX ring full. */
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};
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/* RX element (scattered packets). */
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struct rxq_elt_sp {
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struct ibv_recv_wr wr; /* Work Request. */
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struct ibv_sge sges[MLX4_PMD_SGE_WR_N]; /* Scatter/Gather Elements. */
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struct rte_mbuf *bufs[MLX4_PMD_SGE_WR_N]; /* SGEs buffers. */
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};
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/* RX element. */
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struct rxq_elt {
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struct ibv_recv_wr wr; /* Work Request. */
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struct ibv_sge sge; /* Scatter/Gather Element. */
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/* mbuf pointer is derived from WR_ID(wr.wr_id).offset. */
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};
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/* RX queue descriptor. */
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struct rxq {
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struct priv *priv; /* Back pointer to private data. */
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struct rte_mempool *mp; /* Memory Pool for allocations. */
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struct ibv_mr *mr; /* Memory Region (for mp). */
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struct ibv_cq *cq; /* Completion Queue. */
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struct ibv_qp *qp; /* Queue Pair. */
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/*
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* There is exactly one flow configured per MAC address. Each flow
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* may contain several specifications, one per configured VLAN ID.
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*/
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BITFIELD_DECLARE(mac_configured, uint32_t, MLX4_MAX_MAC_ADDRESSES);
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struct ibv_flow *mac_flow[MLX4_MAX_MAC_ADDRESSES];
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struct ibv_flow *promisc_flow; /* Promiscuous flow. */
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struct ibv_flow *allmulti_flow; /* Multicast flow. */
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unsigned int port_id; /* Port ID for incoming packets. */
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unsigned int elts_n; /* (*elts)[] length. */
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unsigned int elts_head; /* Current index in (*elts)[]. */
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union {
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struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
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struct rxq_elt (*no_sp)[]; /* RX elements. */
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} elts;
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unsigned int sp:1; /* Use scattered RX elements. */
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uint32_t mb_len; /* Length of a mp-issued mbuf. */
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struct mlx4_rxq_stats stats; /* RX queue counters. */
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unsigned int socket; /* CPU socket ID for allocations. */
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};
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/* TX element. */
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struct txq_elt {
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mlx4_send_wr_t wr; /* Work Request. */
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struct ibv_sge sges[MLX4_PMD_SGE_WR_N]; /* Scatter/Gather Elements. */
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/* mbuf pointer is derived from WR_ID(wr.wr_id).offset. */
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};
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/* Linear buffer type. It is used when transmitting buffers with too many
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* segments that do not fit the hardware queue (see max_send_sge).
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* Extra segments are copied (linearized) in such buffers, replacing the
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* last SGE during TX.
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* The size is arbitrary but large enough to hold a jumbo frame with
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* 8 segments considering mbuf.buf_len is about 2048 bytes. */
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typedef uint8_t linear_t[16384];
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/* TX queue descriptor. */
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struct txq {
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struct priv *priv; /* Back pointer to private data. */
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struct {
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struct rte_mempool *mp; /* Cached Memory Pool. */
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struct ibv_mr *mr; /* Memory Region (for mp). */
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uint32_t lkey; /* mr->lkey */
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} mp2mr[MLX4_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
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struct ibv_cq *cq; /* Completion Queue. */
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struct ibv_qp *qp; /* Queue Pair. */
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#if MLX4_PMD_MAX_INLINE > 0
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uint32_t max_inline; /* Max inline send size <= MLX4_PMD_MAX_INLINE. */
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#endif
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unsigned int elts_n; /* (*elts)[] length. */
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struct txq_elt (*elts)[]; /* TX elements. */
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unsigned int elts_head; /* Current index in (*elts)[]. */
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unsigned int elts_tail; /* First element awaiting completion. */
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unsigned int elts_comp; /* Number of completion requests. */
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struct mlx4_txq_stats stats; /* TX queue counters. */
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linear_t (*elts_linear)[]; /* Linearized buffers. */
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struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */
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unsigned int socket; /* CPU socket ID for allocations. */
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};
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struct priv {
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struct rte_eth_dev *dev; /* Ethernet device. */
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struct ibv_context *ctx; /* Verbs context. */
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struct ibv_device_attr device_attr; /* Device properties. */
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struct ibv_pd *pd; /* Protection Domain. */
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/*
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* MAC addresses array and configuration bit-field.
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* An extra entry that cannot be modified by the DPDK is reserved
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* for broadcast frames (destination MAC address ff:ff:ff:ff:ff:ff).
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*/
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struct ether_addr mac[MLX4_MAX_MAC_ADDRESSES];
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BITFIELD_DECLARE(mac_configured, uint32_t, MLX4_MAX_MAC_ADDRESSES);
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/* VLAN filters. */
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struct {
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unsigned int enabled:1; /* If enabled. */
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unsigned int id:12; /* VLAN ID (0-4095). */
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} vlan_filter[MLX4_MAX_VLAN_IDS]; /* VLAN filters table. */
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/* Device properties. */
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uint16_t mtu; /* Configured MTU. */
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uint8_t port; /* Physical port number. */
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unsigned int started:1; /* Device started, flows enabled. */
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unsigned int promisc:1; /* Device in promiscuous mode. */
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unsigned int promisc_ok:1; /* Promiscuous flow is supported. */
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unsigned int allmulti:1; /* Device receives all multicast packets. */
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unsigned int hw_qpg:1; /* QP groups are supported. */
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unsigned int hw_tss:1; /* TSS is supported. */
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unsigned int hw_rss:1; /* RSS is supported. */
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unsigned int rss:1; /* RSS is enabled. */
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unsigned int vf:1; /* This is a VF device. */
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#ifdef INLINE_RECV
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unsigned int inl_recv_size; /* Inline recv size */
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#endif
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unsigned int max_rss_tbl_sz; /* Maximum number of RSS queues. */
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/* RX/TX queues. */
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struct rxq rxq_parent; /* Parent queue when RSS is enabled. */
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unsigned int rxqs_n; /* RX queues array size. */
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unsigned int txqs_n; /* TX queues array size. */
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struct rxq *(*rxqs)[]; /* RX queues. */
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struct txq *(*txqs)[]; /* TX queues. */
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rte_spinlock_t lock; /* Lock for control functions. */
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};
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/**
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* Lock private structure to protect it from concurrent access in the
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* control path.
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*
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* @param priv
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* Pointer to private structure.
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*/
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static void
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priv_lock(struct priv *priv)
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{
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rte_spinlock_lock(&priv->lock);
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}
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/**
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* Unlock private structure.
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*
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* @param priv
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* Pointer to private structure.
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*/
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static void
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priv_unlock(struct priv *priv)
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{
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rte_spinlock_unlock(&priv->lock);
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}
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/* Allocate a buffer on the stack and fill it with a printf format string. */
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#define MKSTR(name, ...) \
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char name[snprintf(NULL, 0, __VA_ARGS__) + 1]; \
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\
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snprintf(name, sizeof(name), __VA_ARGS__)
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/**
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* Get interface name from private structure.
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*
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* @param[in] priv
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* Pointer to private structure.
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* @param[out] ifname
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* Interface name output buffer.
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*
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* @return
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* 0 on success, -1 on failure and errno is set.
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*/
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static int
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priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
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{
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DIR *dir;
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struct dirent *dent;
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unsigned int dev_type = 0;
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unsigned int dev_port_prev = ~0u;
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char match[IF_NAMESIZE] = "";
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{
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MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
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dir = opendir(path);
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if (dir == NULL)
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return -1;
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}
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while ((dent = readdir(dir)) != NULL) {
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char *name = dent->d_name;
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FILE *file;
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unsigned int dev_port;
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int r;
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if ((name[0] == '.') &&
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((name[1] == '\0') ||
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((name[1] == '.') && (name[2] == '\0'))))
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continue;
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MKSTR(path, "%s/device/net/%s/%s",
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priv->ctx->device->ibdev_path, name,
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(dev_type ? "dev_id" : "dev_port"));
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file = fopen(path, "rb");
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if (file == NULL) {
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if (errno != ENOENT)
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continue;
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/*
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* Switch to dev_id when dev_port does not exist as
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* is the case with Linux kernel versions < 3.15.
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*/
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try_dev_id:
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match[0] = '\0';
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if (dev_type)
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break;
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dev_type = 1;
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dev_port_prev = ~0u;
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rewinddir(dir);
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continue;
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}
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r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
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fclose(file);
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if (r != 1)
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continue;
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/*
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* Switch to dev_id when dev_port returns the same value for
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* all ports. May happen when using a MOFED release older than
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* 3.0 with a Linux kernel >= 3.15.
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*/
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if (dev_port == dev_port_prev)
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goto try_dev_id;
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dev_port_prev = dev_port;
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if (dev_port == (priv->port - 1u))
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snprintf(match, sizeof(match), "%s", name);
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}
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closedir(dir);
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if (match[0] == '\0')
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return -1;
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strncpy(*ifname, match, sizeof(*ifname));
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return 0;
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}
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|
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/**
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* Read from sysfs entry.
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*
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* @param[in] priv
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* Pointer to private structure.
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* @param[in] entry
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* Entry name relative to sysfs path.
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* @param[out] buf
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* Data output buffer.
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* @param size
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* Buffer size.
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*
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* @return
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* 0 on success, -1 on failure and errno is set.
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*/
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static int
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priv_sysfs_read(const struct priv *priv, const char *entry,
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char *buf, size_t size)
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{
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char ifname[IF_NAMESIZE];
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FILE *file;
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int ret;
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int err;
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if (priv_get_ifname(priv, &ifname))
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return -1;
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MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
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ifname, entry);
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file = fopen(path, "rb");
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if (file == NULL)
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return -1;
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ret = fread(buf, 1, size, file);
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err = errno;
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if (((size_t)ret < size) && (ferror(file)))
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ret = -1;
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else
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ret = size;
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fclose(file);
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errno = err;
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return ret;
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}
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/**
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* Write to sysfs entry.
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*
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* @param[in] priv
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* Pointer to private structure.
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* @param[in] entry
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* Entry name relative to sysfs path.
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* @param[in] buf
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* Data buffer.
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* @param size
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* Buffer size.
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*
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* @return
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* 0 on success, -1 on failure and errno is set.
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*/
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static int
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priv_sysfs_write(const struct priv *priv, const char *entry,
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char *buf, size_t size)
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{
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char ifname[IF_NAMESIZE];
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FILE *file;
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int ret;
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int err;
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if (priv_get_ifname(priv, &ifname))
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return -1;
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MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
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ifname, entry);
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file = fopen(path, "wb");
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if (file == NULL)
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return -1;
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ret = fwrite(buf, 1, size, file);
|
|
err = errno;
|
|
if (((size_t)ret < size) || (ferror(file)))
|
|
ret = -1;
|
|
else
|
|
ret = size;
|
|
fclose(file);
|
|
errno = err;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Get unsigned long sysfs property.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param[in] name
|
|
* Entry name relative to sysfs path.
|
|
* @param[out] value
|
|
* Value output buffer.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
|
|
{
|
|
int ret;
|
|
unsigned long value_ret;
|
|
char value_str[32];
|
|
|
|
ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
|
|
if (ret == -1) {
|
|
DEBUG("cannot read %s value from sysfs: %s",
|
|
name, strerror(errno));
|
|
return -1;
|
|
}
|
|
value_str[ret] = '\0';
|
|
errno = 0;
|
|
value_ret = strtoul(value_str, NULL, 0);
|
|
if (errno) {
|
|
DEBUG("invalid %s value `%s': %s", name, value_str,
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
*value = value_ret;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Set unsigned long sysfs property.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param[in] name
|
|
* Entry name relative to sysfs path.
|
|
* @param value
|
|
* Value to set.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
|
|
{
|
|
int ret;
|
|
MKSTR(value_str, "%lu", value);
|
|
|
|
ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
|
|
if (ret == -1) {
|
|
DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
|
|
name, value_str, value, strerror(errno));
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Perform ifreq ioctl() on associated Ethernet device.
|
|
*
|
|
* @param[in] priv
|
|
* Pointer to private structure.
|
|
* @param req
|
|
* Request number to pass to ioctl().
|
|
* @param[out] ifr
|
|
* Interface request structure output buffer.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
|
|
{
|
|
int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
|
|
int ret = -1;
|
|
|
|
if (sock == -1)
|
|
return ret;
|
|
if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
|
|
ret = ioctl(sock, req, ifr);
|
|
close(sock);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Get device MTU.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param[out] mtu
|
|
* MTU value output buffer.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_get_mtu(struct priv *priv, uint16_t *mtu)
|
|
{
|
|
unsigned long ulong_mtu;
|
|
|
|
if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
|
|
return -1;
|
|
*mtu = ulong_mtu;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Set device MTU.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param mtu
|
|
* MTU value to set.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_set_mtu(struct priv *priv, uint16_t mtu)
|
|
{
|
|
return priv_set_sysfs_ulong(priv, "mtu", mtu);
|
|
}
|
|
|
|
/**
|
|
* Set device flags.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param keep
|
|
* Bitmask for flags that must remain untouched.
|
|
* @param flags
|
|
* Bitmask for flags to modify.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
|
|
return -1;
|
|
tmp &= keep;
|
|
tmp |= flags;
|
|
return priv_set_sysfs_ulong(priv, "flags", tmp);
|
|
}
|
|
|
|
/* Device configuration. */
|
|
|
|
static int
|
|
rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
|
|
unsigned int socket, const struct rte_eth_rxconf *conf,
|
|
struct rte_mempool *mp);
|
|
|
|
static void
|
|
rxq_cleanup(struct rxq *rxq);
|
|
|
|
/**
|
|
* Ethernet device configuration.
|
|
*
|
|
* Prepare the driver for a given number of TX and RX queues.
|
|
* Allocate parent RSS queue when several RX queues are requested.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
dev_configure(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int rxqs_n = dev->data->nb_rx_queues;
|
|
unsigned int txqs_n = dev->data->nb_tx_queues;
|
|
unsigned int tmp;
|
|
int ret;
|
|
|
|
priv->rxqs = (void *)dev->data->rx_queues;
|
|
priv->txqs = (void *)dev->data->tx_queues;
|
|
if (txqs_n != priv->txqs_n) {
|
|
INFO("%p: TX queues number update: %u -> %u",
|
|
(void *)dev, priv->txqs_n, txqs_n);
|
|
priv->txqs_n = txqs_n;
|
|
}
|
|
if (rxqs_n == priv->rxqs_n)
|
|
return 0;
|
|
INFO("%p: RX queues number update: %u -> %u",
|
|
(void *)dev, priv->rxqs_n, rxqs_n);
|
|
/* If RSS is enabled, disable it first. */
|
|
if (priv->rss) {
|
|
unsigned int i;
|
|
|
|
/* Only if there are no remaining child RX queues. */
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] != NULL)
|
|
return EINVAL;
|
|
rxq_cleanup(&priv->rxq_parent);
|
|
priv->rss = 0;
|
|
priv->rxqs_n = 0;
|
|
}
|
|
if (rxqs_n <= 1) {
|
|
/* Nothing else to do. */
|
|
priv->rxqs_n = rxqs_n;
|
|
return 0;
|
|
}
|
|
/* Allocate a new RSS parent queue if supported by hardware. */
|
|
if (!priv->hw_rss) {
|
|
ERROR("%p: only a single RX queue can be configured when"
|
|
" hardware doesn't support RSS",
|
|
(void *)dev);
|
|
return EINVAL;
|
|
}
|
|
/* Fail if hardware doesn't support that many RSS queues. */
|
|
if (rxqs_n >= priv->max_rss_tbl_sz) {
|
|
ERROR("%p: only %u RX queues can be configured for RSS",
|
|
(void *)dev, priv->max_rss_tbl_sz);
|
|
return EINVAL;
|
|
}
|
|
priv->rss = 1;
|
|
tmp = priv->rxqs_n;
|
|
priv->rxqs_n = rxqs_n;
|
|
ret = rxq_setup(dev, &priv->rxq_parent, 0, 0, NULL, NULL);
|
|
if (!ret)
|
|
return 0;
|
|
/* Failure, rollback. */
|
|
priv->rss = 0;
|
|
priv->rxqs_n = tmp;
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback for Ethernet device configuration.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_configure(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
ret = dev_configure(dev);
|
|
assert(ret >= 0);
|
|
priv_unlock(priv);
|
|
return -ret;
|
|
}
|
|
|
|
/* TX queues handling. */
|
|
|
|
/**
|
|
* Allocate TX queue elements.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
* @param elts_n
|
|
* Number of elements to allocate.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
txq_alloc_elts(struct txq *txq, unsigned int elts_n)
|
|
{
|
|
unsigned int i;
|
|
struct txq_elt (*elts)[elts_n] =
|
|
rte_calloc_socket("TXQ", 1, sizeof(*elts), 0, txq->socket);
|
|
linear_t (*elts_linear)[elts_n] =
|
|
rte_calloc_socket("TXQ", 1, sizeof(*elts_linear), 0,
|
|
txq->socket);
|
|
struct ibv_mr *mr_linear = NULL;
|
|
int ret = 0;
|
|
|
|
if ((elts == NULL) || (elts_linear == NULL)) {
|
|
ERROR("%p: can't allocate packets array", (void *)txq);
|
|
ret = ENOMEM;
|
|
goto error;
|
|
}
|
|
mr_linear =
|
|
ibv_reg_mr(txq->priv->pd, elts_linear, sizeof(*elts_linear),
|
|
(IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
|
|
if (mr_linear == NULL) {
|
|
ERROR("%p: unable to configure MR, ibv_reg_mr() failed",
|
|
(void *)txq);
|
|
ret = EINVAL;
|
|
goto error;
|
|
}
|
|
for (i = 0; (i != elts_n); ++i) {
|
|
struct txq_elt *elt = &(*elts)[i];
|
|
mlx4_send_wr_t *wr = &elt->wr;
|
|
|
|
/* Configure WR. */
|
|
WR_ID(wr->wr_id).id = i;
|
|
WR_ID(wr->wr_id).offset = 0;
|
|
wr->sg_list = &elt->sges[0];
|
|
wr->opcode = IBV_WR_SEND;
|
|
/* Other fields are updated during TX. */
|
|
}
|
|
DEBUG("%p: allocated and configured %u WRs", (void *)txq, elts_n);
|
|
txq->elts_n = elts_n;
|
|
txq->elts = elts;
|
|
txq->elts_head = 0;
|
|
txq->elts_tail = 0;
|
|
txq->elts_comp = 0;
|
|
txq->elts_linear = elts_linear;
|
|
txq->mr_linear = mr_linear;
|
|
assert(ret == 0);
|
|
return 0;
|
|
error:
|
|
if (mr_linear != NULL)
|
|
claim_zero(ibv_dereg_mr(mr_linear));
|
|
|
|
rte_free(elts_linear);
|
|
rte_free(elts);
|
|
|
|
DEBUG("%p: failed, freed everything", (void *)txq);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Free TX queue elements.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
*/
|
|
static void
|
|
txq_free_elts(struct txq *txq)
|
|
{
|
|
unsigned int i;
|
|
unsigned int elts_n = txq->elts_n;
|
|
struct txq_elt (*elts)[elts_n] = txq->elts;
|
|
linear_t (*elts_linear)[elts_n] = txq->elts_linear;
|
|
struct ibv_mr *mr_linear = txq->mr_linear;
|
|
|
|
DEBUG("%p: freeing WRs", (void *)txq);
|
|
txq->elts_n = 0;
|
|
txq->elts = NULL;
|
|
txq->elts_linear = NULL;
|
|
txq->mr_linear = NULL;
|
|
if (mr_linear != NULL)
|
|
claim_zero(ibv_dereg_mr(mr_linear));
|
|
|
|
rte_free(elts_linear);
|
|
if (elts == NULL)
|
|
return;
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
struct txq_elt *elt = &(*elts)[i];
|
|
|
|
if (WR_ID(elt->wr.wr_id).offset == 0)
|
|
continue;
|
|
rte_pktmbuf_free((void *)((uintptr_t)elt->sges[0].addr -
|
|
WR_ID(elt->wr.wr_id).offset));
|
|
}
|
|
rte_free(elts);
|
|
}
|
|
|
|
|
|
/**
|
|
* Clean up a TX queue.
|
|
*
|
|
* Destroy objects, free allocated memory and reset the structure for reuse.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
*/
|
|
static void
|
|
txq_cleanup(struct txq *txq)
|
|
{
|
|
size_t i;
|
|
|
|
DEBUG("cleaning up %p", (void *)txq);
|
|
txq_free_elts(txq);
|
|
if (txq->qp != NULL)
|
|
claim_zero(ibv_destroy_qp(txq->qp));
|
|
if (txq->cq != NULL)
|
|
claim_zero(ibv_destroy_cq(txq->cq));
|
|
for (i = 0; (i != elemof(txq->mp2mr)); ++i) {
|
|
if (txq->mp2mr[i].mp == NULL)
|
|
break;
|
|
assert(txq->mp2mr[i].mr != NULL);
|
|
claim_zero(ibv_dereg_mr(txq->mp2mr[i].mr));
|
|
}
|
|
memset(txq, 0, sizeof(*txq));
|
|
}
|
|
|
|
/**
|
|
* Manage TX completions.
|
|
*
|
|
* When sending a burst, mlx4_tx_burst() posts several WRs.
|
|
* To improve performance, a completion event is only required for the last of
|
|
* them. Doing so discards completion information for other WRs, but this
|
|
* information would not be used anyway.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure.
|
|
*/
|
|
static int
|
|
txq_complete(struct txq *txq)
|
|
{
|
|
unsigned int elts_comp = txq->elts_comp;
|
|
unsigned int elts_tail;
|
|
const unsigned int elts_n = txq->elts_n;
|
|
struct ibv_wc wcs[elts_comp];
|
|
int wcs_n;
|
|
|
|
if (unlikely(elts_comp == 0))
|
|
return 0;
|
|
#ifdef DEBUG_SEND
|
|
DEBUG("%p: processing %u work requests completions",
|
|
(void *)txq, elts_comp);
|
|
#endif
|
|
wcs_n = ibv_poll_cq(txq->cq, elts_comp, wcs);
|
|
if (unlikely(wcs_n == 0))
|
|
return 0;
|
|
if (unlikely(wcs_n < 0)) {
|
|
DEBUG("%p: ibv_poll_cq() failed (wcs_n=%d)",
|
|
(void *)txq, wcs_n);
|
|
return -1;
|
|
}
|
|
elts_comp -= wcs_n;
|
|
assert(elts_comp <= txq->elts_comp);
|
|
/*
|
|
* Work Completion ID contains the associated element index in
|
|
* (*txq->elts)[]. Since WCs are returned in order, we only need to
|
|
* look at the last WC to clear older Work Requests.
|
|
*
|
|
* Assume WC status is successful as nothing can be done about it
|
|
* anyway.
|
|
*/
|
|
elts_tail = WR_ID(wcs[wcs_n - 1].wr_id).id;
|
|
/* Consume the last WC. */
|
|
if (++elts_tail >= elts_n)
|
|
elts_tail = 0;
|
|
txq->elts_tail = elts_tail;
|
|
txq->elts_comp = elts_comp;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get Memory Region (MR) <-> Memory Pool (MP) association from txq->mp2mr[].
|
|
* Add MP to txq->mp2mr[] if it's not registered yet. If mp2mr[] is full,
|
|
* remove an entry first.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
* @param[in] mp
|
|
* Memory Pool for which a Memory Region lkey must be returned.
|
|
*
|
|
* @return
|
|
* mr->lkey on success, (uint32_t)-1 on failure.
|
|
*/
|
|
static uint32_t
|
|
txq_mp2mr(struct txq *txq, struct rte_mempool *mp)
|
|
{
|
|
unsigned int i;
|
|
struct ibv_mr *mr;
|
|
|
|
for (i = 0; (i != elemof(txq->mp2mr)); ++i) {
|
|
if (unlikely(txq->mp2mr[i].mp == NULL)) {
|
|
/* Unknown MP, add a new MR for it. */
|
|
break;
|
|
}
|
|
if (txq->mp2mr[i].mp == mp) {
|
|
assert(txq->mp2mr[i].lkey != (uint32_t)-1);
|
|
assert(txq->mp2mr[i].mr->lkey == txq->mp2mr[i].lkey);
|
|
return txq->mp2mr[i].lkey;
|
|
}
|
|
}
|
|
/* Add a new entry, register MR first. */
|
|
DEBUG("%p: discovered new memory pool %p", (void *)txq, (void *)mp);
|
|
mr = ibv_reg_mr(txq->priv->pd,
|
|
(void *)mp->elt_va_start,
|
|
(mp->elt_va_end - mp->elt_va_start),
|
|
(IBV_ACCESS_LOCAL_WRITE | IBV_ACCESS_REMOTE_WRITE));
|
|
if (unlikely(mr == NULL)) {
|
|
DEBUG("%p: unable to configure MR, ibv_reg_mr() failed.",
|
|
(void *)txq);
|
|
return (uint32_t)-1;
|
|
}
|
|
if (unlikely(i == elemof(txq->mp2mr))) {
|
|
/* Table is full, remove oldest entry. */
|
|
DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
|
|
(void *)txq);
|
|
--i;
|
|
claim_zero(ibv_dereg_mr(txq->mp2mr[i].mr));
|
|
memmove(&txq->mp2mr[0], &txq->mp2mr[1],
|
|
(sizeof(txq->mp2mr) - sizeof(txq->mp2mr[0])));
|
|
}
|
|
/* Store the new entry. */
|
|
txq->mp2mr[i].mp = mp;
|
|
txq->mp2mr[i].mr = mr;
|
|
txq->mp2mr[i].lkey = mr->lkey;
|
|
DEBUG("%p: new MR lkey for MP %p: 0x%08" PRIu32,
|
|
(void *)txq, (void *)mp, txq->mp2mr[i].lkey);
|
|
return txq->mp2mr[i].lkey;
|
|
}
|
|
|
|
/**
|
|
* Copy scattered mbuf contents to a single linear buffer.
|
|
*
|
|
* @param[out] linear
|
|
* Linear output buffer.
|
|
* @param[in] buf
|
|
* Scattered input buffer.
|
|
*
|
|
* @return
|
|
* Number of bytes copied to the output buffer or 0 if not large enough.
|
|
*/
|
|
static unsigned int
|
|
linearize_mbuf(linear_t *linear, struct rte_mbuf *buf)
|
|
{
|
|
unsigned int size = 0;
|
|
unsigned int offset;
|
|
|
|
do {
|
|
unsigned int len = DATA_LEN(buf);
|
|
|
|
offset = size;
|
|
size += len;
|
|
if (unlikely(size > sizeof(*linear)))
|
|
return 0;
|
|
memcpy(&(*linear)[offset],
|
|
rte_pktmbuf_mtod(buf, uint8_t *),
|
|
len);
|
|
buf = NEXT(buf);
|
|
} while (buf != NULL);
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback for TX.
|
|
*
|
|
* @param dpdk_txq
|
|
* Generic pointer to TX queue structure.
|
|
* @param[in] pkts
|
|
* Packets to transmit.
|
|
* @param pkts_n
|
|
* Number of packets in array.
|
|
*
|
|
* @return
|
|
* Number of packets successfully transmitted (<= pkts_n).
|
|
*/
|
|
static uint16_t
|
|
mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
|
|
{
|
|
struct txq *txq = (struct txq *)dpdk_txq;
|
|
mlx4_send_wr_t head;
|
|
mlx4_send_wr_t **wr_next = &head.next;
|
|
mlx4_send_wr_t *bad_wr;
|
|
unsigned int elts_head = txq->elts_head;
|
|
const unsigned int elts_tail = txq->elts_tail;
|
|
const unsigned int elts_n = txq->elts_n;
|
|
unsigned int i;
|
|
unsigned int max;
|
|
int err;
|
|
|
|
txq_complete(txq);
|
|
max = (elts_n - (elts_head - elts_tail));
|
|
if (max > elts_n)
|
|
max -= elts_n;
|
|
assert(max >= 1);
|
|
assert(max <= elts_n);
|
|
/* Always leave one free entry in the ring. */
|
|
--max;
|
|
if (max == 0)
|
|
return 0;
|
|
if (max > pkts_n)
|
|
max = pkts_n;
|
|
for (i = 0; (i != max); ++i) {
|
|
struct rte_mbuf *buf = pkts[i];
|
|
struct txq_elt *elt = &(*txq->elts)[elts_head];
|
|
mlx4_send_wr_t *wr = &elt->wr;
|
|
unsigned int segs = NB_SEGS(buf);
|
|
#if (MLX4_PMD_MAX_INLINE > 0) || defined(MLX4_PMD_SOFT_COUNTERS)
|
|
unsigned int sent_size = 0;
|
|
#endif
|
|
unsigned int j;
|
|
int linearize = 0;
|
|
|
|
/* Clean up old buffer. */
|
|
if (likely(WR_ID(wr->wr_id).offset != 0)) {
|
|
struct rte_mbuf *tmp = (void *)
|
|
((uintptr_t)elt->sges[0].addr -
|
|
WR_ID(wr->wr_id).offset);
|
|
|
|
/* Faster than rte_pktmbuf_free(). */
|
|
do {
|
|
struct rte_mbuf *next = NEXT(tmp);
|
|
|
|
rte_pktmbuf_free_seg(tmp);
|
|
tmp = next;
|
|
} while (tmp != NULL);
|
|
}
|
|
#ifndef NDEBUG
|
|
/* For assert(). */
|
|
WR_ID(wr->wr_id).offset = 0;
|
|
for (j = 0; ((int)j < wr->num_sge); ++j) {
|
|
elt->sges[j].addr = 0;
|
|
elt->sges[j].length = 0;
|
|
elt->sges[j].lkey = 0;
|
|
}
|
|
wr->next = NULL;
|
|
wr->num_sge = 0;
|
|
#endif
|
|
/* Sanity checks, most of which are only relevant with
|
|
* debugging enabled. */
|
|
assert(WR_ID(wr->wr_id).id == elts_head);
|
|
assert(WR_ID(wr->wr_id).offset == 0);
|
|
assert(wr->next == NULL);
|
|
assert(wr->sg_list == &elt->sges[0]);
|
|
assert(wr->num_sge == 0);
|
|
assert(wr->opcode == IBV_WR_SEND);
|
|
/* When there are too many segments, extra segments are
|
|
* linearized in the last SGE. */
|
|
if (unlikely(segs > elemof(elt->sges))) {
|
|
segs = (elemof(elt->sges) - 1);
|
|
linearize = 1;
|
|
}
|
|
/* Set WR fields. */
|
|
assert((rte_pktmbuf_mtod(buf, uintptr_t) -
|
|
(uintptr_t)buf) <= 0xffff);
|
|
WR_ID(wr->wr_id).offset =
|
|
(rte_pktmbuf_mtod(buf, uintptr_t) -
|
|
(uintptr_t)buf);
|
|
wr->num_sge = segs;
|
|
/* Register segments as SGEs. */
|
|
for (j = 0; (j != segs); ++j) {
|
|
struct ibv_sge *sge = &elt->sges[j];
|
|
uint32_t lkey;
|
|
|
|
/* Retrieve Memory Region key for this memory pool. */
|
|
lkey = txq_mp2mr(txq, buf->pool);
|
|
if (unlikely(lkey == (uint32_t)-1)) {
|
|
/* MR does not exist. */
|
|
DEBUG("%p: unable to get MP <-> MR"
|
|
" association", (void *)txq);
|
|
/* Clean up TX element. */
|
|
WR_ID(elt->wr.wr_id).offset = 0;
|
|
#ifndef NDEBUG
|
|
/* For assert(). */
|
|
while (j) {
|
|
--j;
|
|
--sge;
|
|
sge->addr = 0;
|
|
sge->length = 0;
|
|
sge->lkey = 0;
|
|
}
|
|
wr->num_sge = 0;
|
|
#endif
|
|
goto stop;
|
|
}
|
|
/* Sanity checks, only relevant with debugging
|
|
* enabled. */
|
|
assert(sge->addr == 0);
|
|
assert(sge->length == 0);
|
|
assert(sge->lkey == 0);
|
|
/* Update SGE. */
|
|
sge->addr = rte_pktmbuf_mtod(buf, uintptr_t);
|
|
if (txq->priv->vf)
|
|
rte_prefetch0((volatile void *)
|
|
(uintptr_t)sge->addr);
|
|
sge->length = DATA_LEN(buf);
|
|
sge->lkey = lkey;
|
|
#if (MLX4_PMD_MAX_INLINE > 0) || defined(MLX4_PMD_SOFT_COUNTERS)
|
|
sent_size += sge->length;
|
|
#endif
|
|
buf = NEXT(buf);
|
|
}
|
|
/* If buf is not NULL here and is not going to be linearized,
|
|
* nb_segs is not valid. */
|
|
assert(j == segs);
|
|
assert((buf == NULL) || (linearize));
|
|
/* Linearize extra segments. */
|
|
if (linearize) {
|
|
struct ibv_sge *sge = &elt->sges[segs];
|
|
linear_t *linear = &(*txq->elts_linear)[elts_head];
|
|
unsigned int size = linearize_mbuf(linear, buf);
|
|
|
|
assert(segs == (elemof(elt->sges) - 1));
|
|
if (size == 0) {
|
|
/* Invalid packet. */
|
|
DEBUG("%p: packet too large to be linearized.",
|
|
(void *)txq);
|
|
/* Clean up TX element. */
|
|
WR_ID(elt->wr.wr_id).offset = 0;
|
|
#ifndef NDEBUG
|
|
/* For assert(). */
|
|
while (j) {
|
|
--j;
|
|
--sge;
|
|
sge->addr = 0;
|
|
sge->length = 0;
|
|
sge->lkey = 0;
|
|
}
|
|
wr->num_sge = 0;
|
|
#endif
|
|
goto stop;
|
|
}
|
|
/* If MLX4_PMD_SGE_WR_N is 1, free mbuf immediately
|
|
* and clear offset from WR ID. */
|
|
if (elemof(elt->sges) == 1) {
|
|
do {
|
|
struct rte_mbuf *next = NEXT(buf);
|
|
|
|
rte_pktmbuf_free_seg(buf);
|
|
buf = next;
|
|
} while (buf != NULL);
|
|
WR_ID(wr->wr_id).offset = 0;
|
|
}
|
|
/* Set WR fields and fill SGE with linear buffer. */
|
|
++wr->num_sge;
|
|
/* Sanity checks, only relevant with debugging
|
|
* enabled. */
|
|
assert(sge->addr == 0);
|
|
assert(sge->length == 0);
|
|
assert(sge->lkey == 0);
|
|
/* Update SGE. */
|
|
sge->addr = (uintptr_t)&(*linear)[0];
|
|
sge->length = size;
|
|
sge->lkey = txq->mr_linear->lkey;
|
|
#if (MLX4_PMD_MAX_INLINE > 0) || defined(MLX4_PMD_SOFT_COUNTERS)
|
|
sent_size += size;
|
|
#endif
|
|
}
|
|
/* Link WRs together for ibv_post_send(). */
|
|
*wr_next = wr;
|
|
wr_next = &wr->next;
|
|
#if MLX4_PMD_MAX_INLINE > 0
|
|
if (sent_size <= txq->max_inline)
|
|
wr->send_flags = IBV_SEND_INLINE;
|
|
else
|
|
#endif
|
|
wr->send_flags = 0;
|
|
if (++elts_head >= elts_n)
|
|
elts_head = 0;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increment sent bytes counter. */
|
|
txq->stats.obytes += sent_size;
|
|
#endif
|
|
}
|
|
stop:
|
|
/* Take a shortcut if nothing must be sent. */
|
|
if (unlikely(i == 0))
|
|
return 0;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increment sent packets counter. */
|
|
txq->stats.opackets += i;
|
|
#endif
|
|
*wr_next = NULL;
|
|
/* The last WR is the only one asking for a completion event. */
|
|
containerof(wr_next, mlx4_send_wr_t, next)->
|
|
send_flags |= IBV_SEND_SIGNALED;
|
|
err = mlx4_post_send(txq->qp, head.next, &bad_wr);
|
|
if (unlikely(err)) {
|
|
unsigned int unsent = 0;
|
|
|
|
/* An error occurred, completion event is lost. Fix counters. */
|
|
while (bad_wr != NULL) {
|
|
struct txq_elt *elt =
|
|
containerof(bad_wr, struct txq_elt, wr);
|
|
mlx4_send_wr_t *wr = &elt->wr;
|
|
mlx4_send_wr_t *next = wr->next;
|
|
#if defined(MLX4_PMD_SOFT_COUNTERS) || !defined(NDEBUG)
|
|
unsigned int j;
|
|
#endif
|
|
|
|
assert(wr == bad_wr);
|
|
/* Clean up TX element without freeing it, caller
|
|
* should take care of this. */
|
|
WR_ID(elt->wr.wr_id).offset = 0;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
for (j = 0; ((int)j < wr->num_sge); ++j)
|
|
txq->stats.obytes -= wr->sg_list[j].length;
|
|
#endif
|
|
++unsent;
|
|
#ifndef NDEBUG
|
|
/* For assert(). */
|
|
for (j = 0; ((int)j < wr->num_sge); ++j) {
|
|
elt->sges[j].addr = 0;
|
|
elt->sges[j].length = 0;
|
|
elt->sges[j].lkey = 0;
|
|
}
|
|
wr->next = NULL;
|
|
wr->num_sge = 0;
|
|
#endif
|
|
bad_wr = next;
|
|
}
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
txq->stats.opackets -= unsent;
|
|
#endif
|
|
assert(i >= unsent);
|
|
i -= unsent;
|
|
/* "Unsend" remaining packets. */
|
|
elts_head -= unsent;
|
|
if (elts_head >= elts_n)
|
|
elts_head += elts_n;
|
|
assert(elts_head < elts_n);
|
|
DEBUG("%p: mlx4_post_send() failed, %u unprocessed WRs: %s",
|
|
(void *)txq, unsent,
|
|
((err <= -1) ? "Internal error" : strerror(err)));
|
|
} else
|
|
++txq->elts_comp;
|
|
txq->elts_head = elts_head;
|
|
return i;
|
|
}
|
|
|
|
/**
|
|
* Configure a TX queue.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
* @param desc
|
|
* Number of descriptors to configure in queue.
|
|
* @param socket
|
|
* NUMA socket on which memory must be allocated.
|
|
* @param[in] conf
|
|
* Thresholds parameters.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
txq_setup(struct rte_eth_dev *dev, struct txq *txq, uint16_t desc,
|
|
unsigned int socket, const struct rte_eth_txconf *conf)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct txq tmpl = {
|
|
.priv = priv,
|
|
.socket = socket
|
|
};
|
|
union {
|
|
struct ibv_qp_init_attr init;
|
|
struct ibv_exp_qp_attr mod;
|
|
} attr;
|
|
int ret = 0;
|
|
|
|
(void)conf; /* Thresholds configuration (ignored). */
|
|
if ((desc == 0) || (desc % MLX4_PMD_SGE_WR_N)) {
|
|
ERROR("%p: invalid number of TX descriptors (must be a"
|
|
" multiple of %d)", (void *)dev, MLX4_PMD_SGE_WR_N);
|
|
return EINVAL;
|
|
}
|
|
desc /= MLX4_PMD_SGE_WR_N;
|
|
/* MRs will be registered in mp2mr[] later. */
|
|
tmpl.cq = ibv_create_cq(priv->ctx, desc, NULL, NULL, 0);
|
|
if (tmpl.cq == NULL) {
|
|
ret = ENOMEM;
|
|
ERROR("%p: CQ creation failure: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
DEBUG("priv->device_attr.max_qp_wr is %d",
|
|
priv->device_attr.max_qp_wr);
|
|
DEBUG("priv->device_attr.max_sge is %d",
|
|
priv->device_attr.max_sge);
|
|
attr.init = (struct ibv_qp_init_attr){
|
|
/* CQ to be associated with the send queue. */
|
|
.send_cq = tmpl.cq,
|
|
/* CQ to be associated with the receive queue. */
|
|
.recv_cq = tmpl.cq,
|
|
.cap = {
|
|
/* Max number of outstanding WRs. */
|
|
.max_send_wr = ((priv->device_attr.max_qp_wr < desc) ?
|
|
priv->device_attr.max_qp_wr :
|
|
desc),
|
|
/* Max number of scatter/gather elements in a WR. */
|
|
.max_send_sge = ((priv->device_attr.max_sge <
|
|
MLX4_PMD_SGE_WR_N) ?
|
|
priv->device_attr.max_sge :
|
|
MLX4_PMD_SGE_WR_N),
|
|
#if MLX4_PMD_MAX_INLINE > 0
|
|
.max_inline_data = MLX4_PMD_MAX_INLINE,
|
|
#endif
|
|
},
|
|
.qp_type = IBV_QPT_RAW_PACKET,
|
|
/* Do *NOT* enable this, completions events are managed per
|
|
* TX burst. */
|
|
.sq_sig_all = 0
|
|
};
|
|
tmpl.qp = ibv_create_qp(priv->pd, &attr.init);
|
|
if (tmpl.qp == NULL) {
|
|
ret = (errno ? errno : EINVAL);
|
|
ERROR("%p: QP creation failure: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
#if MLX4_PMD_MAX_INLINE > 0
|
|
/* ibv_create_qp() updates this value. */
|
|
tmpl.max_inline = attr.init.cap.max_inline_data;
|
|
#endif
|
|
attr.mod = (struct ibv_exp_qp_attr){
|
|
/* Move the QP to this state. */
|
|
.qp_state = IBV_QPS_INIT,
|
|
/* Primary port number. */
|
|
.port_num = priv->port
|
|
};
|
|
ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod,
|
|
(IBV_EXP_QP_STATE | IBV_EXP_QP_PORT));
|
|
if (ret) {
|
|
ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
ret = txq_alloc_elts(&tmpl, desc);
|
|
if (ret) {
|
|
ERROR("%p: TXQ allocation failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
attr.mod = (struct ibv_exp_qp_attr){
|
|
.qp_state = IBV_QPS_RTR
|
|
};
|
|
ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
|
|
if (ret) {
|
|
ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
attr.mod.qp_state = IBV_QPS_RTS;
|
|
ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
|
|
if (ret) {
|
|
ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
/* Clean up txq in case we're reinitializing it. */
|
|
DEBUG("%p: cleaning-up old txq just in case", (void *)txq);
|
|
txq_cleanup(txq);
|
|
*txq = tmpl;
|
|
DEBUG("%p: txq updated with %p", (void *)txq, (void *)&tmpl);
|
|
assert(ret == 0);
|
|
return 0;
|
|
error:
|
|
txq_cleanup(&tmpl);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to configure a TX queue.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param idx
|
|
* TX queue index.
|
|
* @param desc
|
|
* Number of descriptors to configure in queue.
|
|
* @param socket
|
|
* NUMA socket on which memory must be allocated.
|
|
* @param[in] conf
|
|
* Thresholds parameters.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
|
|
unsigned int socket, const struct rte_eth_txconf *conf)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct txq *txq = (*priv->txqs)[idx];
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
DEBUG("%p: configuring queue %u for %u descriptors",
|
|
(void *)dev, idx, desc);
|
|
if (idx >= priv->txqs_n) {
|
|
ERROR("%p: queue index out of range (%u >= %u)",
|
|
(void *)dev, idx, priv->txqs_n);
|
|
priv_unlock(priv);
|
|
return -EOVERFLOW;
|
|
}
|
|
if (txq != NULL) {
|
|
DEBUG("%p: reusing already allocated queue index %u (%p)",
|
|
(void *)dev, idx, (void *)txq);
|
|
if (priv->started) {
|
|
priv_unlock(priv);
|
|
return -EEXIST;
|
|
}
|
|
(*priv->txqs)[idx] = NULL;
|
|
txq_cleanup(txq);
|
|
} else {
|
|
txq = rte_calloc_socket("TXQ", 1, sizeof(*txq), 0, socket);
|
|
if (txq == NULL) {
|
|
ERROR("%p: unable to allocate queue index %u",
|
|
(void *)dev, idx);
|
|
priv_unlock(priv);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
ret = txq_setup(dev, txq, desc, socket, conf);
|
|
if (ret)
|
|
rte_free(txq);
|
|
else {
|
|
txq->stats.idx = idx;
|
|
DEBUG("%p: adding TX queue %p to list",
|
|
(void *)dev, (void *)txq);
|
|
(*priv->txqs)[idx] = txq;
|
|
/* Update send callback. */
|
|
dev->tx_pkt_burst = mlx4_tx_burst;
|
|
}
|
|
priv_unlock(priv);
|
|
return -ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to release a TX queue.
|
|
*
|
|
* @param dpdk_txq
|
|
* Generic TX queue pointer.
|
|
*/
|
|
static void
|
|
mlx4_tx_queue_release(void *dpdk_txq)
|
|
{
|
|
struct txq *txq = (struct txq *)dpdk_txq;
|
|
struct priv *priv;
|
|
unsigned int i;
|
|
|
|
if (txq == NULL)
|
|
return;
|
|
priv = txq->priv;
|
|
priv_lock(priv);
|
|
for (i = 0; (i != priv->txqs_n); ++i)
|
|
if ((*priv->txqs)[i] == txq) {
|
|
DEBUG("%p: removing TX queue %p from list",
|
|
(void *)priv->dev, (void *)txq);
|
|
(*priv->txqs)[i] = NULL;
|
|
break;
|
|
}
|
|
txq_cleanup(txq);
|
|
rte_free(txq);
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/* RX queues handling. */
|
|
|
|
/**
|
|
* Allocate RX queue elements with scattered packets support.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
* @param elts_n
|
|
* Number of elements to allocate.
|
|
* @param[in] pool
|
|
* If not NULL, fetch buffers from this array instead of allocating them
|
|
* with rte_pktmbuf_alloc().
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_alloc_elts_sp(struct rxq *rxq, unsigned int elts_n,
|
|
struct rte_mbuf **pool)
|
|
{
|
|
unsigned int i;
|
|
struct rxq_elt_sp (*elts)[elts_n] =
|
|
rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0,
|
|
rxq->socket);
|
|
int ret = 0;
|
|
|
|
if (elts == NULL) {
|
|
ERROR("%p: can't allocate packets array", (void *)rxq);
|
|
ret = ENOMEM;
|
|
goto error;
|
|
}
|
|
/* For each WR (packet). */
|
|
for (i = 0; (i != elts_n); ++i) {
|
|
unsigned int j;
|
|
struct rxq_elt_sp *elt = &(*elts)[i];
|
|
struct ibv_recv_wr *wr = &elt->wr;
|
|
struct ibv_sge (*sges)[(elemof(elt->sges))] = &elt->sges;
|
|
|
|
/* These two arrays must have the same size. */
|
|
assert(elemof(elt->sges) == elemof(elt->bufs));
|
|
/* Configure WR. */
|
|
wr->wr_id = i;
|
|
wr->next = &(*elts)[(i + 1)].wr;
|
|
wr->sg_list = &(*sges)[0];
|
|
wr->num_sge = elemof(*sges);
|
|
/* For each SGE (segment). */
|
|
for (j = 0; (j != elemof(elt->bufs)); ++j) {
|
|
struct ibv_sge *sge = &(*sges)[j];
|
|
struct rte_mbuf *buf;
|
|
|
|
if (pool != NULL) {
|
|
buf = *(pool++);
|
|
assert(buf != NULL);
|
|
rte_pktmbuf_reset(buf);
|
|
} else
|
|
buf = rte_pktmbuf_alloc(rxq->mp);
|
|
if (buf == NULL) {
|
|
assert(pool == NULL);
|
|
ERROR("%p: empty mbuf pool", (void *)rxq);
|
|
ret = ENOMEM;
|
|
goto error;
|
|
}
|
|
elt->bufs[j] = buf;
|
|
/* Headroom is reserved by rte_pktmbuf_alloc(). */
|
|
assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
|
|
/* Buffer is supposed to be empty. */
|
|
assert(rte_pktmbuf_data_len(buf) == 0);
|
|
assert(rte_pktmbuf_pkt_len(buf) == 0);
|
|
/* sge->addr must be able to store a pointer. */
|
|
assert(sizeof(sge->addr) >= sizeof(uintptr_t));
|
|
if (j == 0) {
|
|
/* The first SGE keeps its headroom. */
|
|
sge->addr = rte_pktmbuf_mtod(buf, uintptr_t);
|
|
sge->length = (buf->buf_len -
|
|
RTE_PKTMBUF_HEADROOM);
|
|
} else {
|
|
/* Subsequent SGEs lose theirs. */
|
|
assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
|
|
SET_DATA_OFF(buf, 0);
|
|
sge->addr = (uintptr_t)buf->buf_addr;
|
|
sge->length = buf->buf_len;
|
|
}
|
|
sge->lkey = rxq->mr->lkey;
|
|
/* Redundant check for tailroom. */
|
|
assert(sge->length == rte_pktmbuf_tailroom(buf));
|
|
}
|
|
}
|
|
/* The last WR pointer must be NULL. */
|
|
(*elts)[(i - 1)].wr.next = NULL;
|
|
DEBUG("%p: allocated and configured %u WRs (%zu segments)",
|
|
(void *)rxq, elts_n, (elts_n * elemof((*elts)[0].sges)));
|
|
rxq->elts_n = elts_n;
|
|
rxq->elts_head = 0;
|
|
rxq->elts.sp = elts;
|
|
assert(ret == 0);
|
|
return 0;
|
|
error:
|
|
if (elts != NULL) {
|
|
assert(pool == NULL);
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
unsigned int j;
|
|
struct rxq_elt_sp *elt = &(*elts)[i];
|
|
|
|
for (j = 0; (j != elemof(elt->bufs)); ++j) {
|
|
struct rte_mbuf *buf = elt->bufs[j];
|
|
|
|
if (buf != NULL)
|
|
rte_pktmbuf_free_seg(buf);
|
|
}
|
|
}
|
|
rte_free(elts);
|
|
}
|
|
DEBUG("%p: failed, freed everything", (void *)rxq);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Free RX queue elements with scattered packets support.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_free_elts_sp(struct rxq *rxq)
|
|
{
|
|
unsigned int i;
|
|
unsigned int elts_n = rxq->elts_n;
|
|
struct rxq_elt_sp (*elts)[elts_n] = rxq->elts.sp;
|
|
|
|
DEBUG("%p: freeing WRs", (void *)rxq);
|
|
rxq->elts_n = 0;
|
|
rxq->elts.sp = NULL;
|
|
if (elts == NULL)
|
|
return;
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
unsigned int j;
|
|
struct rxq_elt_sp *elt = &(*elts)[i];
|
|
|
|
for (j = 0; (j != elemof(elt->bufs)); ++j) {
|
|
struct rte_mbuf *buf = elt->bufs[j];
|
|
|
|
if (buf != NULL)
|
|
rte_pktmbuf_free_seg(buf);
|
|
}
|
|
}
|
|
rte_free(elts);
|
|
}
|
|
|
|
/**
|
|
* Allocate RX queue elements.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
* @param elts_n
|
|
* Number of elements to allocate.
|
|
* @param[in] pool
|
|
* If not NULL, fetch buffers from this array instead of allocating them
|
|
* with rte_pktmbuf_alloc().
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_alloc_elts(struct rxq *rxq, unsigned int elts_n, struct rte_mbuf **pool)
|
|
{
|
|
unsigned int i;
|
|
struct rxq_elt (*elts)[elts_n] =
|
|
rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0,
|
|
rxq->socket);
|
|
int ret = 0;
|
|
|
|
if (elts == NULL) {
|
|
ERROR("%p: can't allocate packets array", (void *)rxq);
|
|
ret = ENOMEM;
|
|
goto error;
|
|
}
|
|
/* For each WR (packet). */
|
|
for (i = 0; (i != elts_n); ++i) {
|
|
struct rxq_elt *elt = &(*elts)[i];
|
|
struct ibv_recv_wr *wr = &elt->wr;
|
|
struct ibv_sge *sge = &(*elts)[i].sge;
|
|
struct rte_mbuf *buf;
|
|
|
|
if (pool != NULL) {
|
|
buf = *(pool++);
|
|
assert(buf != NULL);
|
|
rte_pktmbuf_reset(buf);
|
|
} else
|
|
buf = rte_pktmbuf_alloc(rxq->mp);
|
|
if (buf == NULL) {
|
|
assert(pool == NULL);
|
|
ERROR("%p: empty mbuf pool", (void *)rxq);
|
|
ret = ENOMEM;
|
|
goto error;
|
|
}
|
|
/* Configure WR. Work request ID contains its own index in
|
|
* the elts array and the offset between SGE buffer header and
|
|
* its data. */
|
|
WR_ID(wr->wr_id).id = i;
|
|
WR_ID(wr->wr_id).offset =
|
|
(((uintptr_t)buf->buf_addr + RTE_PKTMBUF_HEADROOM) -
|
|
(uintptr_t)buf);
|
|
wr->next = &(*elts)[(i + 1)].wr;
|
|
wr->sg_list = sge;
|
|
wr->num_sge = 1;
|
|
/* Headroom is reserved by rte_pktmbuf_alloc(). */
|
|
assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM);
|
|
/* Buffer is supposed to be empty. */
|
|
assert(rte_pktmbuf_data_len(buf) == 0);
|
|
assert(rte_pktmbuf_pkt_len(buf) == 0);
|
|
/* sge->addr must be able to store a pointer. */
|
|
assert(sizeof(sge->addr) >= sizeof(uintptr_t));
|
|
/* SGE keeps its headroom. */
|
|
sge->addr = (uintptr_t)
|
|
((uint8_t *)buf->buf_addr + RTE_PKTMBUF_HEADROOM);
|
|
sge->length = (buf->buf_len - RTE_PKTMBUF_HEADROOM);
|
|
sge->lkey = rxq->mr->lkey;
|
|
/* Redundant check for tailroom. */
|
|
assert(sge->length == rte_pktmbuf_tailroom(buf));
|
|
/* Make sure elts index and SGE mbuf pointer can be deduced
|
|
* from WR ID. */
|
|
if ((WR_ID(wr->wr_id).id != i) ||
|
|
((void *)((uintptr_t)sge->addr -
|
|
WR_ID(wr->wr_id).offset) != buf)) {
|
|
ERROR("%p: cannot store index and offset in WR ID",
|
|
(void *)rxq);
|
|
sge->addr = 0;
|
|
rte_pktmbuf_free(buf);
|
|
ret = EOVERFLOW;
|
|
goto error;
|
|
}
|
|
}
|
|
/* The last WR pointer must be NULL. */
|
|
(*elts)[(i - 1)].wr.next = NULL;
|
|
DEBUG("%p: allocated and configured %u single-segment WRs",
|
|
(void *)rxq, elts_n);
|
|
rxq->elts_n = elts_n;
|
|
rxq->elts_head = 0;
|
|
rxq->elts.no_sp = elts;
|
|
assert(ret == 0);
|
|
return 0;
|
|
error:
|
|
if (elts != NULL) {
|
|
assert(pool == NULL);
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
struct rxq_elt *elt = &(*elts)[i];
|
|
struct rte_mbuf *buf;
|
|
|
|
if (elt->sge.addr == 0)
|
|
continue;
|
|
assert(WR_ID(elt->wr.wr_id).id == i);
|
|
buf = (void *)((uintptr_t)elt->sge.addr -
|
|
WR_ID(elt->wr.wr_id).offset);
|
|
rte_pktmbuf_free_seg(buf);
|
|
}
|
|
rte_free(elts);
|
|
}
|
|
DEBUG("%p: failed, freed everything", (void *)rxq);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Free RX queue elements.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_free_elts(struct rxq *rxq)
|
|
{
|
|
unsigned int i;
|
|
unsigned int elts_n = rxq->elts_n;
|
|
struct rxq_elt (*elts)[elts_n] = rxq->elts.no_sp;
|
|
|
|
DEBUG("%p: freeing WRs", (void *)rxq);
|
|
rxq->elts_n = 0;
|
|
rxq->elts.no_sp = NULL;
|
|
if (elts == NULL)
|
|
return;
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
struct rxq_elt *elt = &(*elts)[i];
|
|
struct rte_mbuf *buf;
|
|
|
|
if (elt->sge.addr == 0)
|
|
continue;
|
|
assert(WR_ID(elt->wr.wr_id).id == i);
|
|
buf = (void *)((uintptr_t)elt->sge.addr -
|
|
WR_ID(elt->wr.wr_id).offset);
|
|
rte_pktmbuf_free_seg(buf);
|
|
}
|
|
rte_free(elts);
|
|
}
|
|
|
|
/**
|
|
* Unregister a MAC address from a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
* @param mac_index
|
|
* MAC address index.
|
|
*/
|
|
static void
|
|
rxq_mac_addr_del(struct rxq *rxq, unsigned int mac_index)
|
|
{
|
|
#ifndef NDEBUG
|
|
struct priv *priv = rxq->priv;
|
|
const uint8_t (*mac)[ETHER_ADDR_LEN] =
|
|
(const uint8_t (*)[ETHER_ADDR_LEN])
|
|
priv->mac[mac_index].addr_bytes;
|
|
#endif
|
|
|
|
assert(mac_index < elemof(priv->mac));
|
|
if (!BITFIELD_ISSET(rxq->mac_configured, mac_index)) {
|
|
assert(rxq->mac_flow[mac_index] == NULL);
|
|
return;
|
|
}
|
|
DEBUG("%p: removing MAC address %02x:%02x:%02x:%02x:%02x:%02x"
|
|
" index %u",
|
|
(void *)rxq,
|
|
(*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5],
|
|
mac_index);
|
|
assert(rxq->mac_flow[mac_index] != NULL);
|
|
claim_zero(ibv_destroy_flow(rxq->mac_flow[mac_index]));
|
|
rxq->mac_flow[mac_index] = NULL;
|
|
BITFIELD_RESET(rxq->mac_configured, mac_index);
|
|
}
|
|
|
|
/**
|
|
* Unregister all MAC addresses from a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_mac_addrs_del(struct rxq *rxq)
|
|
{
|
|
struct priv *priv = rxq->priv;
|
|
unsigned int i;
|
|
|
|
for (i = 0; (i != elemof(priv->mac)); ++i)
|
|
rxq_mac_addr_del(rxq, i);
|
|
}
|
|
|
|
static int rxq_promiscuous_enable(struct rxq *);
|
|
static void rxq_promiscuous_disable(struct rxq *);
|
|
|
|
/**
|
|
* Register a MAC address in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
* @param mac_index
|
|
* MAC address index to register.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_mac_addr_add(struct rxq *rxq, unsigned int mac_index)
|
|
{
|
|
struct priv *priv = rxq->priv;
|
|
const uint8_t (*mac)[ETHER_ADDR_LEN] =
|
|
(const uint8_t (*)[ETHER_ADDR_LEN])
|
|
priv->mac[mac_index].addr_bytes;
|
|
unsigned int vlans = 0;
|
|
unsigned int specs = 0;
|
|
unsigned int i, j;
|
|
struct ibv_flow *flow;
|
|
|
|
assert(mac_index < elemof(priv->mac));
|
|
if (BITFIELD_ISSET(rxq->mac_configured, mac_index))
|
|
rxq_mac_addr_del(rxq, mac_index);
|
|
/* Number of configured VLANs. */
|
|
for (i = 0; (i != elemof(priv->vlan_filter)); ++i)
|
|
if (priv->vlan_filter[i].enabled)
|
|
++vlans;
|
|
specs = (vlans ? vlans : 1);
|
|
|
|
/* Allocate flow specification on the stack. */
|
|
struct ibv_flow_attr data
|
|
[1 +
|
|
(sizeof(struct ibv_flow_spec_eth[specs]) /
|
|
sizeof(struct ibv_flow_attr)) +
|
|
!!(sizeof(struct ibv_flow_spec_eth[specs]) %
|
|
sizeof(struct ibv_flow_attr))];
|
|
struct ibv_flow_attr *attr = (void *)&data[0];
|
|
struct ibv_flow_spec_eth *spec = (void *)&data[1];
|
|
|
|
/*
|
|
* No padding must be inserted by the compiler between attr and spec.
|
|
* This layout is expected by libibverbs.
|
|
*/
|
|
assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec);
|
|
*attr = (struct ibv_flow_attr){
|
|
.type = IBV_FLOW_ATTR_NORMAL,
|
|
.num_of_specs = specs,
|
|
.port = priv->port,
|
|
.flags = 0
|
|
};
|
|
*spec = (struct ibv_flow_spec_eth){
|
|
.type = IBV_FLOW_SPEC_ETH,
|
|
.size = sizeof(*spec),
|
|
.val = {
|
|
.dst_mac = {
|
|
(*mac)[0], (*mac)[1], (*mac)[2],
|
|
(*mac)[3], (*mac)[4], (*mac)[5]
|
|
}
|
|
},
|
|
.mask = {
|
|
.dst_mac = "\xff\xff\xff\xff\xff\xff",
|
|
.vlan_tag = (vlans ? htons(0xfff) : 0)
|
|
}
|
|
};
|
|
/* Fill VLAN specifications. */
|
|
for (i = 0, j = 0; (i != elemof(priv->vlan_filter)); ++i) {
|
|
if (!priv->vlan_filter[i].enabled)
|
|
continue;
|
|
assert(j != vlans);
|
|
if (j)
|
|
spec[j] = spec[0];
|
|
spec[j].val.vlan_tag = htons(priv->vlan_filter[i].id);
|
|
++j;
|
|
}
|
|
DEBUG("%p: adding MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
|
|
" (%u VLAN(s) configured)",
|
|
(void *)rxq,
|
|
(*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5],
|
|
mac_index,
|
|
vlans);
|
|
/* Create related flow. */
|
|
errno = 0;
|
|
flow = ibv_create_flow(rxq->qp, attr);
|
|
if (flow == NULL) {
|
|
int err = errno;
|
|
|
|
/* Flow creation failure is not fatal when in DMFS A0 mode.
|
|
* Ignore error if promiscuity is already enabled or can be
|
|
* enabled. */
|
|
if (priv->promisc_ok)
|
|
return 0;
|
|
if ((rxq->promisc_flow != NULL) ||
|
|
(rxq_promiscuous_enable(rxq) == 0)) {
|
|
if (rxq->promisc_flow != NULL)
|
|
rxq_promiscuous_disable(rxq);
|
|
WARN("cannot configure normal flow but promiscuous"
|
|
" mode is fine, assuming promiscuous optimization"
|
|
" is enabled"
|
|
" (options mlx4_core log_num_mgm_entry_size=-7)");
|
|
priv->promisc_ok = 1;
|
|
return 0;
|
|
}
|
|
errno = err;
|
|
/* It's not clear whether errno is always set in this case. */
|
|
ERROR("%p: flow configuration failed, errno=%d: %s",
|
|
(void *)rxq, errno,
|
|
(errno ? strerror(errno) : "Unknown error"));
|
|
if (errno)
|
|
return errno;
|
|
return EINVAL;
|
|
}
|
|
assert(rxq->mac_flow[mac_index] == NULL);
|
|
rxq->mac_flow[mac_index] = flow;
|
|
BITFIELD_SET(rxq->mac_configured, mac_index);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Register all MAC addresses in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_mac_addrs_add(struct rxq *rxq)
|
|
{
|
|
struct priv *priv = rxq->priv;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
for (i = 0; (i != elemof(priv->mac)); ++i) {
|
|
if (!BITFIELD_ISSET(priv->mac_configured, i))
|
|
continue;
|
|
ret = rxq_mac_addr_add(rxq, i);
|
|
if (!ret)
|
|
continue;
|
|
/* Failure, rollback. */
|
|
while (i != 0)
|
|
rxq_mac_addr_del(rxq, --i);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Unregister a MAC address.
|
|
*
|
|
* In RSS mode, the MAC address is unregistered from the parent queue,
|
|
* otherwise it is unregistered from each queue directly.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param mac_index
|
|
* MAC address index.
|
|
*/
|
|
static void
|
|
priv_mac_addr_del(struct priv *priv, unsigned int mac_index)
|
|
{
|
|
unsigned int i;
|
|
|
|
assert(mac_index < elemof(priv->mac));
|
|
if (!BITFIELD_ISSET(priv->mac_configured, mac_index))
|
|
return;
|
|
if (priv->rss) {
|
|
rxq_mac_addr_del(&priv->rxq_parent, mac_index);
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->dev->data->nb_rx_queues); ++i)
|
|
rxq_mac_addr_del((*priv->rxqs)[i], mac_index);
|
|
end:
|
|
BITFIELD_RESET(priv->mac_configured, mac_index);
|
|
}
|
|
|
|
/**
|
|
* Register a MAC address.
|
|
*
|
|
* In RSS mode, the MAC address is registered in the parent queue,
|
|
* otherwise it is registered in each queue directly.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param mac_index
|
|
* MAC address index to use.
|
|
* @param mac
|
|
* MAC address to register.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
priv_mac_addr_add(struct priv *priv, unsigned int mac_index,
|
|
const uint8_t (*mac)[ETHER_ADDR_LEN])
|
|
{
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
assert(mac_index < elemof(priv->mac));
|
|
/* First, make sure this address isn't already configured. */
|
|
for (i = 0; (i != elemof(priv->mac)); ++i) {
|
|
/* Skip this index, it's going to be reconfigured. */
|
|
if (i == mac_index)
|
|
continue;
|
|
if (!BITFIELD_ISSET(priv->mac_configured, i))
|
|
continue;
|
|
if (memcmp(priv->mac[i].addr_bytes, *mac, sizeof(*mac)))
|
|
continue;
|
|
/* Address already configured elsewhere, return with error. */
|
|
return EADDRINUSE;
|
|
}
|
|
if (BITFIELD_ISSET(priv->mac_configured, mac_index))
|
|
priv_mac_addr_del(priv, mac_index);
|
|
priv->mac[mac_index] = (struct ether_addr){
|
|
{
|
|
(*mac)[0], (*mac)[1], (*mac)[2],
|
|
(*mac)[3], (*mac)[4], (*mac)[5]
|
|
}
|
|
};
|
|
/* If device isn't started, this is all we need to do. */
|
|
if (!priv->started) {
|
|
#ifndef NDEBUG
|
|
/* Verify that all queues have this index disabled. */
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
assert(!BITFIELD_ISSET
|
|
((*priv->rxqs)[i]->mac_configured, mac_index));
|
|
}
|
|
#endif
|
|
goto end;
|
|
}
|
|
if (priv->rss) {
|
|
ret = rxq_mac_addr_add(&priv->rxq_parent, mac_index);
|
|
if (ret)
|
|
return ret;
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
ret = rxq_mac_addr_add((*priv->rxqs)[i], mac_index);
|
|
if (!ret)
|
|
continue;
|
|
/* Failure, rollback. */
|
|
while (i != 0)
|
|
if ((*priv->rxqs)[(--i)] != NULL)
|
|
rxq_mac_addr_del((*priv->rxqs)[i], mac_index);
|
|
return ret;
|
|
}
|
|
end:
|
|
BITFIELD_SET(priv->mac_configured, mac_index);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Enable allmulti mode in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_allmulticast_enable(struct rxq *rxq)
|
|
{
|
|
struct ibv_flow *flow;
|
|
struct ibv_flow_attr attr = {
|
|
.type = IBV_FLOW_ATTR_MC_DEFAULT,
|
|
.num_of_specs = 0,
|
|
.port = rxq->priv->port,
|
|
.flags = 0
|
|
};
|
|
|
|
DEBUG("%p: enabling allmulticast mode", (void *)rxq);
|
|
if (rxq->allmulti_flow != NULL)
|
|
return EBUSY;
|
|
errno = 0;
|
|
flow = ibv_create_flow(rxq->qp, &attr);
|
|
if (flow == NULL) {
|
|
/* It's not clear whether errno is always set in this case. */
|
|
ERROR("%p: flow configuration failed, errno=%d: %s",
|
|
(void *)rxq, errno,
|
|
(errno ? strerror(errno) : "Unknown error"));
|
|
if (errno)
|
|
return errno;
|
|
return EINVAL;
|
|
}
|
|
rxq->allmulti_flow = flow;
|
|
DEBUG("%p: allmulticast mode enabled", (void *)rxq);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Disable allmulti mode in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_allmulticast_disable(struct rxq *rxq)
|
|
{
|
|
DEBUG("%p: disabling allmulticast mode", (void *)rxq);
|
|
if (rxq->allmulti_flow == NULL)
|
|
return;
|
|
claim_zero(ibv_destroy_flow(rxq->allmulti_flow));
|
|
rxq->allmulti_flow = NULL;
|
|
DEBUG("%p: allmulticast mode disabled", (void *)rxq);
|
|
}
|
|
|
|
/**
|
|
* Enable promiscuous mode in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_promiscuous_enable(struct rxq *rxq)
|
|
{
|
|
struct ibv_flow *flow;
|
|
struct ibv_flow_attr attr = {
|
|
.type = IBV_FLOW_ATTR_ALL_DEFAULT,
|
|
.num_of_specs = 0,
|
|
.port = rxq->priv->port,
|
|
.flags = 0
|
|
};
|
|
|
|
if (rxq->priv->vf)
|
|
return 0;
|
|
DEBUG("%p: enabling promiscuous mode", (void *)rxq);
|
|
if (rxq->promisc_flow != NULL)
|
|
return EBUSY;
|
|
errno = 0;
|
|
flow = ibv_create_flow(rxq->qp, &attr);
|
|
if (flow == NULL) {
|
|
/* It's not clear whether errno is always set in this case. */
|
|
ERROR("%p: flow configuration failed, errno=%d: %s",
|
|
(void *)rxq, errno,
|
|
(errno ? strerror(errno) : "Unknown error"));
|
|
if (errno)
|
|
return errno;
|
|
return EINVAL;
|
|
}
|
|
rxq->promisc_flow = flow;
|
|
DEBUG("%p: promiscuous mode enabled", (void *)rxq);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Disable promiscuous mode in a RX queue.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_promiscuous_disable(struct rxq *rxq)
|
|
{
|
|
if (rxq->priv->vf)
|
|
return;
|
|
DEBUG("%p: disabling promiscuous mode", (void *)rxq);
|
|
if (rxq->promisc_flow == NULL)
|
|
return;
|
|
claim_zero(ibv_destroy_flow(rxq->promisc_flow));
|
|
rxq->promisc_flow = NULL;
|
|
DEBUG("%p: promiscuous mode disabled", (void *)rxq);
|
|
}
|
|
|
|
/**
|
|
* Clean up a RX queue.
|
|
*
|
|
* Destroy objects, free allocated memory and reset the structure for reuse.
|
|
*
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
*/
|
|
static void
|
|
rxq_cleanup(struct rxq *rxq)
|
|
{
|
|
DEBUG("cleaning up %p", (void *)rxq);
|
|
if (rxq->sp)
|
|
rxq_free_elts_sp(rxq);
|
|
else
|
|
rxq_free_elts(rxq);
|
|
if (rxq->qp != NULL) {
|
|
rxq_promiscuous_disable(rxq);
|
|
rxq_allmulticast_disable(rxq);
|
|
rxq_mac_addrs_del(rxq);
|
|
claim_zero(ibv_destroy_qp(rxq->qp));
|
|
}
|
|
if (rxq->cq != NULL)
|
|
claim_zero(ibv_destroy_cq(rxq->cq));
|
|
if (rxq->mr != NULL)
|
|
claim_zero(ibv_dereg_mr(rxq->mr));
|
|
memset(rxq, 0, sizeof(*rxq));
|
|
}
|
|
|
|
static uint16_t
|
|
mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n);
|
|
|
|
/**
|
|
* DPDK callback for RX with scattered packets support.
|
|
*
|
|
* @param dpdk_rxq
|
|
* Generic pointer to RX queue structure.
|
|
* @param[out] pkts
|
|
* Array to store received packets.
|
|
* @param pkts_n
|
|
* Maximum number of packets in array.
|
|
*
|
|
* @return
|
|
* Number of packets successfully received (<= pkts_n).
|
|
*/
|
|
static uint16_t
|
|
mlx4_rx_burst_sp(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
|
|
{
|
|
struct rxq *rxq = (struct rxq *)dpdk_rxq;
|
|
struct rxq_elt_sp (*elts)[rxq->elts_n] = rxq->elts.sp;
|
|
const unsigned int elts_n = rxq->elts_n;
|
|
unsigned int elts_head = rxq->elts_head;
|
|
struct ibv_wc wcs[pkts_n];
|
|
struct ibv_recv_wr head;
|
|
struct ibv_recv_wr **next = &head.next;
|
|
struct ibv_recv_wr *bad_wr;
|
|
int ret = 0;
|
|
int wcs_n;
|
|
int i;
|
|
|
|
if (unlikely(!rxq->sp))
|
|
return mlx4_rx_burst(dpdk_rxq, pkts, pkts_n);
|
|
if (unlikely(elts == NULL)) /* See RTE_DEV_CMD_SET_MTU. */
|
|
return 0;
|
|
wcs_n = ibv_poll_cq(rxq->cq, pkts_n, wcs);
|
|
if (unlikely(wcs_n == 0))
|
|
return 0;
|
|
if (unlikely(wcs_n < 0)) {
|
|
DEBUG("rxq=%p, ibv_poll_cq() failed (wc_n=%d)",
|
|
(void *)rxq, wcs_n);
|
|
return 0;
|
|
}
|
|
assert(wcs_n <= (int)pkts_n);
|
|
/* For each work completion. */
|
|
for (i = 0; (i != wcs_n); ++i) {
|
|
struct ibv_wc *wc = &wcs[i];
|
|
uint64_t wr_id = wc->wr_id;
|
|
uint32_t len = wc->byte_len;
|
|
struct rxq_elt_sp *elt = &(*elts)[elts_head];
|
|
struct ibv_recv_wr *wr = &elt->wr;
|
|
struct rte_mbuf *pkt_buf = NULL; /* Buffer returned in pkts. */
|
|
struct rte_mbuf **pkt_buf_next = &pkt_buf;
|
|
unsigned int seg_headroom = RTE_PKTMBUF_HEADROOM;
|
|
unsigned int j = 0;
|
|
|
|
/* Sanity checks. */
|
|
#ifdef NDEBUG
|
|
(void)wr_id;
|
|
#endif
|
|
assert(wr_id < rxq->elts_n);
|
|
assert(wr_id == wr->wr_id);
|
|
assert(wr->sg_list == elt->sges);
|
|
assert(wr->num_sge == elemof(elt->sges));
|
|
assert(elts_head < rxq->elts_n);
|
|
assert(rxq->elts_head < rxq->elts_n);
|
|
/* Link completed WRs together for repost. */
|
|
*next = wr;
|
|
next = &wr->next;
|
|
if (unlikely(wc->status != IBV_WC_SUCCESS)) {
|
|
/* Whatever, just repost the offending WR. */
|
|
DEBUG("rxq=%p, wr_id=%" PRIu64 ": bad work completion"
|
|
" status (%d): %s",
|
|
(void *)rxq, wc->wr_id, wc->status,
|
|
ibv_wc_status_str(wc->status));
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase dropped packets counter. */
|
|
++rxq->stats.idropped;
|
|
#endif
|
|
goto repost;
|
|
}
|
|
/*
|
|
* Replace spent segments with new ones, concatenate and
|
|
* return them as pkt_buf.
|
|
*/
|
|
while (1) {
|
|
struct ibv_sge *sge = &elt->sges[j];
|
|
struct rte_mbuf *seg = elt->bufs[j];
|
|
struct rte_mbuf *rep;
|
|
unsigned int seg_tailroom;
|
|
|
|
/*
|
|
* Fetch initial bytes of packet descriptor into a
|
|
* cacheline while allocating rep.
|
|
*/
|
|
rte_prefetch0(seg);
|
|
rep = __rte_mbuf_raw_alloc(rxq->mp);
|
|
if (unlikely(rep == NULL)) {
|
|
/*
|
|
* Unable to allocate a replacement mbuf,
|
|
* repost WR.
|
|
*/
|
|
DEBUG("rxq=%p, wr_id=%" PRIu64 ":"
|
|
" can't allocate a new mbuf",
|
|
(void *)rxq, wr_id);
|
|
if (pkt_buf != NULL) {
|
|
*pkt_buf_next = NULL;
|
|
rte_pktmbuf_free(pkt_buf);
|
|
}
|
|
/* Increase out of memory counters. */
|
|
++rxq->stats.rx_nombuf;
|
|
++rxq->priv->dev->data->rx_mbuf_alloc_failed;
|
|
goto repost;
|
|
}
|
|
#ifndef NDEBUG
|
|
/* Poison user-modifiable fields in rep. */
|
|
NEXT(rep) = (void *)((uintptr_t)-1);
|
|
SET_DATA_OFF(rep, 0xdead);
|
|
DATA_LEN(rep) = 0xd00d;
|
|
PKT_LEN(rep) = 0xdeadd00d;
|
|
NB_SEGS(rep) = 0x2a;
|
|
PORT(rep) = 0x2a;
|
|
rep->ol_flags = -1;
|
|
#endif
|
|
assert(rep->buf_len == seg->buf_len);
|
|
assert(rep->buf_len == rxq->mb_len);
|
|
/* Reconfigure sge to use rep instead of seg. */
|
|
assert(sge->lkey == rxq->mr->lkey);
|
|
sge->addr = ((uintptr_t)rep->buf_addr + seg_headroom);
|
|
elt->bufs[j] = rep;
|
|
++j;
|
|
/* Update pkt_buf if it's the first segment, or link
|
|
* seg to the previous one and update pkt_buf_next. */
|
|
*pkt_buf_next = seg;
|
|
pkt_buf_next = &NEXT(seg);
|
|
/* Update seg information. */
|
|
seg_tailroom = (seg->buf_len - seg_headroom);
|
|
assert(sge->length == seg_tailroom);
|
|
SET_DATA_OFF(seg, seg_headroom);
|
|
if (likely(len <= seg_tailroom)) {
|
|
/* Last segment. */
|
|
DATA_LEN(seg) = len;
|
|
PKT_LEN(seg) = len;
|
|
/* Sanity check. */
|
|
assert(rte_pktmbuf_headroom(seg) ==
|
|
seg_headroom);
|
|
assert(rte_pktmbuf_tailroom(seg) ==
|
|
(seg_tailroom - len));
|
|
break;
|
|
}
|
|
DATA_LEN(seg) = seg_tailroom;
|
|
PKT_LEN(seg) = seg_tailroom;
|
|
/* Sanity check. */
|
|
assert(rte_pktmbuf_headroom(seg) == seg_headroom);
|
|
assert(rte_pktmbuf_tailroom(seg) == 0);
|
|
/* Fix len and clear headroom for next segments. */
|
|
len -= seg_tailroom;
|
|
seg_headroom = 0;
|
|
}
|
|
/* Update head and tail segments. */
|
|
*pkt_buf_next = NULL;
|
|
assert(pkt_buf != NULL);
|
|
assert(j != 0);
|
|
NB_SEGS(pkt_buf) = j;
|
|
PORT(pkt_buf) = rxq->port_id;
|
|
PKT_LEN(pkt_buf) = wc->byte_len;
|
|
pkt_buf->ol_flags = 0;
|
|
|
|
/* Return packet. */
|
|
*(pkts++) = pkt_buf;
|
|
++ret;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase bytes counter. */
|
|
rxq->stats.ibytes += wc->byte_len;
|
|
#endif
|
|
repost:
|
|
if (++elts_head >= elts_n)
|
|
elts_head = 0;
|
|
continue;
|
|
}
|
|
*next = NULL;
|
|
/* Repost WRs. */
|
|
#ifdef DEBUG_RECV
|
|
DEBUG("%p: reposting %d WRs starting from %" PRIu64 " (%p)",
|
|
(void *)rxq, wcs_n, wcs[0].wr_id, (void *)head.next);
|
|
#endif
|
|
i = ibv_post_recv(rxq->qp, head.next, &bad_wr);
|
|
if (unlikely(i)) {
|
|
/* Inability to repost WRs is fatal. */
|
|
DEBUG("%p: ibv_post_recv(): failed for WR %p: %s",
|
|
(void *)rxq->priv,
|
|
(void *)bad_wr,
|
|
strerror(i));
|
|
abort();
|
|
}
|
|
rxq->elts_head = elts_head;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase packets counter. */
|
|
rxq->stats.ipackets += ret;
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback for RX.
|
|
*
|
|
* The following function is the same as mlx4_rx_burst_sp(), except it doesn't
|
|
* manage scattered packets. Improves performance when MRU is lower than the
|
|
* size of the first segment.
|
|
*
|
|
* @param dpdk_rxq
|
|
* Generic pointer to RX queue structure.
|
|
* @param[out] pkts
|
|
* Array to store received packets.
|
|
* @param pkts_n
|
|
* Maximum number of packets in array.
|
|
*
|
|
* @return
|
|
* Number of packets successfully received (<= pkts_n).
|
|
*/
|
|
static uint16_t
|
|
mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
|
|
{
|
|
struct rxq *rxq = (struct rxq *)dpdk_rxq;
|
|
struct rxq_elt (*elts)[rxq->elts_n] = rxq->elts.no_sp;
|
|
const unsigned int elts_n = rxq->elts_n;
|
|
unsigned int elts_head = rxq->elts_head;
|
|
struct ibv_wc wcs[pkts_n];
|
|
struct ibv_recv_wr head;
|
|
struct ibv_recv_wr **next = &head.next;
|
|
struct ibv_recv_wr *bad_wr;
|
|
int ret = 0;
|
|
int wcs_n;
|
|
int i;
|
|
|
|
if (unlikely(rxq->sp))
|
|
return mlx4_rx_burst_sp(dpdk_rxq, pkts, pkts_n);
|
|
wcs_n = ibv_poll_cq(rxq->cq, pkts_n, wcs);
|
|
if (unlikely(wcs_n == 0))
|
|
return 0;
|
|
if (unlikely(wcs_n < 0)) {
|
|
DEBUG("rxq=%p, ibv_poll_cq() failed (wc_n=%d)",
|
|
(void *)rxq, wcs_n);
|
|
return 0;
|
|
}
|
|
assert(wcs_n <= (int)pkts_n);
|
|
/* For each work completion. */
|
|
for (i = 0; (i != wcs_n); ++i) {
|
|
struct ibv_wc *wc = &wcs[i];
|
|
uint64_t wr_id = wc->wr_id;
|
|
uint32_t len = wc->byte_len;
|
|
struct rxq_elt *elt = &(*elts)[elts_head];
|
|
struct ibv_recv_wr *wr = &elt->wr;
|
|
struct rte_mbuf *seg = (void *)((uintptr_t)elt->sge.addr -
|
|
WR_ID(wr_id).offset);
|
|
struct rte_mbuf *rep;
|
|
|
|
/* Sanity checks. */
|
|
assert(WR_ID(wr_id).id < rxq->elts_n);
|
|
assert(wr_id == wr->wr_id);
|
|
assert(wr->sg_list == &elt->sge);
|
|
assert(wr->num_sge == 1);
|
|
assert(elts_head < rxq->elts_n);
|
|
assert(rxq->elts_head < rxq->elts_n);
|
|
/* Link completed WRs together for repost. */
|
|
*next = wr;
|
|
next = &wr->next;
|
|
if (unlikely(wc->status != IBV_WC_SUCCESS)) {
|
|
/* Whatever, just repost the offending WR. */
|
|
DEBUG("rxq=%p, wr_id=%" PRIu32 ": bad work completion"
|
|
" status (%d): %s",
|
|
(void *)rxq, WR_ID(wr_id).id, wc->status,
|
|
ibv_wc_status_str(wc->status));
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase dropped packets counter. */
|
|
++rxq->stats.idropped;
|
|
#endif
|
|
goto repost;
|
|
}
|
|
/*
|
|
* Fetch initial bytes of packet descriptor into a
|
|
* cacheline while allocating rep.
|
|
*/
|
|
rte_prefetch0(seg);
|
|
rep = __rte_mbuf_raw_alloc(rxq->mp);
|
|
if (unlikely(rep == NULL)) {
|
|
/*
|
|
* Unable to allocate a replacement mbuf,
|
|
* repost WR.
|
|
*/
|
|
DEBUG("rxq=%p, wr_id=%" PRIu32 ":"
|
|
" can't allocate a new mbuf",
|
|
(void *)rxq, WR_ID(wr_id).id);
|
|
/* Increase out of memory counters. */
|
|
++rxq->stats.rx_nombuf;
|
|
++rxq->priv->dev->data->rx_mbuf_alloc_failed;
|
|
goto repost;
|
|
}
|
|
|
|
/* Reconfigure sge to use rep instead of seg. */
|
|
elt->sge.addr = (uintptr_t)rep->buf_addr + RTE_PKTMBUF_HEADROOM;
|
|
assert(elt->sge.lkey == rxq->mr->lkey);
|
|
WR_ID(wr->wr_id).offset =
|
|
(((uintptr_t)rep->buf_addr + RTE_PKTMBUF_HEADROOM) -
|
|
(uintptr_t)rep);
|
|
assert(WR_ID(wr->wr_id).id == WR_ID(wr_id).id);
|
|
|
|
/* Update seg information. */
|
|
SET_DATA_OFF(seg, RTE_PKTMBUF_HEADROOM);
|
|
NB_SEGS(seg) = 1;
|
|
PORT(seg) = rxq->port_id;
|
|
NEXT(seg) = NULL;
|
|
PKT_LEN(seg) = len;
|
|
DATA_LEN(seg) = len;
|
|
seg->ol_flags = 0;
|
|
|
|
/* Return packet. */
|
|
*(pkts++) = seg;
|
|
++ret;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase bytes counter. */
|
|
rxq->stats.ibytes += wc->byte_len;
|
|
#endif
|
|
repost:
|
|
if (++elts_head >= elts_n)
|
|
elts_head = 0;
|
|
continue;
|
|
}
|
|
*next = NULL;
|
|
/* Repost WRs. */
|
|
#ifdef DEBUG_RECV
|
|
DEBUG("%p: reposting %d WRs starting from %" PRIu32 " (%p)",
|
|
(void *)rxq, wcs_n, WR_ID(wcs[0].wr_id).id, (void *)head.next);
|
|
#endif
|
|
i = ibv_post_recv(rxq->qp, head.next, &bad_wr);
|
|
if (unlikely(i)) {
|
|
/* Inability to repost WRs is fatal. */
|
|
DEBUG("%p: ibv_post_recv(): failed for WR %p: %s",
|
|
(void *)rxq->priv,
|
|
(void *)bad_wr,
|
|
strerror(i));
|
|
abort();
|
|
}
|
|
rxq->elts_head = elts_head;
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
/* Increase packets counter. */
|
|
rxq->stats.ipackets += ret;
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Allocate a Queue Pair.
|
|
* Optionally setup inline receive if supported.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param cq
|
|
* Completion queue to associate with QP.
|
|
* @param desc
|
|
* Number of descriptors in QP (hint only).
|
|
*
|
|
* @return
|
|
* QP pointer or NULL in case of error.
|
|
*/
|
|
static struct ibv_qp *
|
|
rxq_setup_qp(struct priv *priv, struct ibv_cq *cq, uint16_t desc)
|
|
{
|
|
struct ibv_exp_qp_init_attr attr = {
|
|
/* CQ to be associated with the send queue. */
|
|
.send_cq = cq,
|
|
/* CQ to be associated with the receive queue. */
|
|
.recv_cq = cq,
|
|
.cap = {
|
|
/* Max number of outstanding WRs. */
|
|
.max_recv_wr = ((priv->device_attr.max_qp_wr < desc) ?
|
|
priv->device_attr.max_qp_wr :
|
|
desc),
|
|
/* Max number of scatter/gather elements in a WR. */
|
|
.max_recv_sge = ((priv->device_attr.max_sge <
|
|
MLX4_PMD_SGE_WR_N) ?
|
|
priv->device_attr.max_sge :
|
|
MLX4_PMD_SGE_WR_N),
|
|
},
|
|
.qp_type = IBV_QPT_RAW_PACKET,
|
|
.comp_mask = IBV_EXP_QP_INIT_ATTR_PD,
|
|
.pd = priv->pd,
|
|
};
|
|
|
|
#ifdef INLINE_RECV
|
|
attr.max_inl_recv = priv->inl_recv_size;
|
|
attr.comp_mask |= IBV_EXP_QP_INIT_ATTR_INL_RECV;
|
|
#endif
|
|
return ibv_exp_create_qp(priv->ctx, &attr);
|
|
}
|
|
|
|
#ifdef RSS_SUPPORT
|
|
|
|
/**
|
|
* Allocate a RSS Queue Pair.
|
|
* Optionally setup inline receive if supported.
|
|
*
|
|
* @param priv
|
|
* Pointer to private structure.
|
|
* @param cq
|
|
* Completion queue to associate with QP.
|
|
* @param desc
|
|
* Number of descriptors in QP (hint only).
|
|
* @param parent
|
|
* If nonzero, create a parent QP, otherwise a child.
|
|
*
|
|
* @return
|
|
* QP pointer or NULL in case of error.
|
|
*/
|
|
static struct ibv_qp *
|
|
rxq_setup_qp_rss(struct priv *priv, struct ibv_cq *cq, uint16_t desc,
|
|
int parent)
|
|
{
|
|
struct ibv_exp_qp_init_attr attr = {
|
|
/* CQ to be associated with the send queue. */
|
|
.send_cq = cq,
|
|
/* CQ to be associated with the receive queue. */
|
|
.recv_cq = cq,
|
|
.cap = {
|
|
/* Max number of outstanding WRs. */
|
|
.max_recv_wr = ((priv->device_attr.max_qp_wr < desc) ?
|
|
priv->device_attr.max_qp_wr :
|
|
desc),
|
|
/* Max number of scatter/gather elements in a WR. */
|
|
.max_recv_sge = ((priv->device_attr.max_sge <
|
|
MLX4_PMD_SGE_WR_N) ?
|
|
priv->device_attr.max_sge :
|
|
MLX4_PMD_SGE_WR_N),
|
|
},
|
|
.qp_type = IBV_QPT_RAW_PACKET,
|
|
.comp_mask = (IBV_EXP_QP_INIT_ATTR_PD |
|
|
IBV_EXP_QP_INIT_ATTR_QPG),
|
|
.pd = priv->pd
|
|
};
|
|
|
|
#ifdef INLINE_RECV
|
|
attr.max_inl_recv = priv->inl_recv_size,
|
|
attr.comp_mask |= IBV_EXP_QP_INIT_ATTR_INL_RECV;
|
|
#endif
|
|
if (parent) {
|
|
attr.qpg.qpg_type = IBV_EXP_QPG_PARENT;
|
|
/* TSS isn't necessary. */
|
|
attr.qpg.parent_attrib.tss_child_count = 0;
|
|
attr.qpg.parent_attrib.rss_child_count = priv->rxqs_n;
|
|
DEBUG("initializing parent RSS queue");
|
|
} else {
|
|
attr.qpg.qpg_type = IBV_EXP_QPG_CHILD_RX;
|
|
attr.qpg.qpg_parent = priv->rxq_parent.qp;
|
|
DEBUG("initializing child RSS queue");
|
|
}
|
|
return ibv_exp_create_qp(priv->ctx, &attr);
|
|
}
|
|
|
|
#endif /* RSS_SUPPORT */
|
|
|
|
/**
|
|
* Reconfigure a RX queue with new parameters.
|
|
*
|
|
* rxq_rehash() does not allocate mbufs, which, if not done from the right
|
|
* thread (such as a control thread), may corrupt the pool.
|
|
* In case of failure, the queue is left untouched.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param rxq
|
|
* RX queue pointer.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq)
|
|
{
|
|
struct priv *priv = rxq->priv;
|
|
struct rxq tmpl = *rxq;
|
|
unsigned int mbuf_n;
|
|
unsigned int desc_n;
|
|
struct rte_mbuf **pool;
|
|
unsigned int i, k;
|
|
struct ibv_exp_qp_attr mod;
|
|
struct ibv_recv_wr *bad_wr;
|
|
int err;
|
|
int parent = (rxq == &priv->rxq_parent);
|
|
|
|
if (parent) {
|
|
ERROR("%p: cannot rehash parent queue %p",
|
|
(void *)dev, (void *)rxq);
|
|
return EINVAL;
|
|
}
|
|
DEBUG("%p: rehashing queue %p", (void *)dev, (void *)rxq);
|
|
/* Number of descriptors and mbufs currently allocated. */
|
|
desc_n = (tmpl.elts_n * (tmpl.sp ? MLX4_PMD_SGE_WR_N : 1));
|
|
mbuf_n = desc_n;
|
|
/* Enable scattered packets support for this queue if necessary. */
|
|
if ((dev->data->dev_conf.rxmode.jumbo_frame) &&
|
|
(dev->data->dev_conf.rxmode.max_rx_pkt_len >
|
|
(tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) {
|
|
tmpl.sp = 1;
|
|
desc_n /= MLX4_PMD_SGE_WR_N;
|
|
} else
|
|
tmpl.sp = 0;
|
|
DEBUG("%p: %s scattered packets support (%u WRs)",
|
|
(void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc_n);
|
|
/* If scatter mode is the same as before, nothing to do. */
|
|
if (tmpl.sp == rxq->sp) {
|
|
DEBUG("%p: nothing to do", (void *)dev);
|
|
return 0;
|
|
}
|
|
/* Remove attached flows if RSS is disabled (no parent queue). */
|
|
if (!priv->rss) {
|
|
rxq_allmulticast_disable(&tmpl);
|
|
rxq_promiscuous_disable(&tmpl);
|
|
rxq_mac_addrs_del(&tmpl);
|
|
/* Update original queue in case of failure. */
|
|
rxq->allmulti_flow = tmpl.allmulti_flow;
|
|
rxq->promisc_flow = tmpl.promisc_flow;
|
|
memcpy(rxq->mac_configured, tmpl.mac_configured,
|
|
sizeof(rxq->mac_configured));
|
|
memcpy(rxq->mac_flow, tmpl.mac_flow, sizeof(rxq->mac_flow));
|
|
}
|
|
/* From now on, any failure will render the queue unusable.
|
|
* Reinitialize QP. */
|
|
mod = (struct ibv_exp_qp_attr){ .qp_state = IBV_QPS_RESET };
|
|
err = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
|
|
if (err) {
|
|
ERROR("%p: cannot reset QP: %s", (void *)dev, strerror(err));
|
|
assert(err > 0);
|
|
return err;
|
|
}
|
|
err = ibv_resize_cq(tmpl.cq, desc_n);
|
|
if (err) {
|
|
ERROR("%p: cannot resize CQ: %s", (void *)dev, strerror(err));
|
|
assert(err > 0);
|
|
return err;
|
|
}
|
|
mod = (struct ibv_exp_qp_attr){
|
|
/* Move the QP to this state. */
|
|
.qp_state = IBV_QPS_INIT,
|
|
/* Primary port number. */
|
|
.port_num = priv->port
|
|
};
|
|
err = ibv_exp_modify_qp(tmpl.qp, &mod,
|
|
(IBV_EXP_QP_STATE |
|
|
#ifdef RSS_SUPPORT
|
|
(parent ? IBV_EXP_QP_GROUP_RSS : 0) |
|
|
#endif /* RSS_SUPPORT */
|
|
IBV_EXP_QP_PORT));
|
|
if (err) {
|
|
ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
|
|
(void *)dev, strerror(err));
|
|
assert(err > 0);
|
|
return err;
|
|
};
|
|
/* Reconfigure flows. Do not care for errors. */
|
|
if (!priv->rss) {
|
|
rxq_mac_addrs_add(&tmpl);
|
|
if (priv->promisc)
|
|
rxq_promiscuous_enable(&tmpl);
|
|
if (priv->allmulti)
|
|
rxq_allmulticast_enable(&tmpl);
|
|
/* Update original queue in case of failure. */
|
|
rxq->allmulti_flow = tmpl.allmulti_flow;
|
|
rxq->promisc_flow = tmpl.promisc_flow;
|
|
memcpy(rxq->mac_configured, tmpl.mac_configured,
|
|
sizeof(rxq->mac_configured));
|
|
memcpy(rxq->mac_flow, tmpl.mac_flow, sizeof(rxq->mac_flow));
|
|
}
|
|
/* Allocate pool. */
|
|
pool = rte_malloc(__func__, (mbuf_n * sizeof(*pool)), 0);
|
|
if (pool == NULL) {
|
|
ERROR("%p: cannot allocate memory", (void *)dev);
|
|
return ENOBUFS;
|
|
}
|
|
/* Snatch mbufs from original queue. */
|
|
k = 0;
|
|
if (rxq->sp) {
|
|
struct rxq_elt_sp (*elts)[rxq->elts_n] = rxq->elts.sp;
|
|
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
struct rxq_elt_sp *elt = &(*elts)[i];
|
|
unsigned int j;
|
|
|
|
for (j = 0; (j != elemof(elt->bufs)); ++j) {
|
|
assert(elt->bufs[j] != NULL);
|
|
pool[k++] = elt->bufs[j];
|
|
}
|
|
}
|
|
} else {
|
|
struct rxq_elt (*elts)[rxq->elts_n] = rxq->elts.no_sp;
|
|
|
|
for (i = 0; (i != elemof(*elts)); ++i) {
|
|
struct rxq_elt *elt = &(*elts)[i];
|
|
struct rte_mbuf *buf = (void *)
|
|
((uintptr_t)elt->sge.addr -
|
|
WR_ID(elt->wr.wr_id).offset);
|
|
|
|
assert(WR_ID(elt->wr.wr_id).id == i);
|
|
pool[k++] = buf;
|
|
}
|
|
}
|
|
assert(k == mbuf_n);
|
|
tmpl.elts_n = 0;
|
|
tmpl.elts.sp = NULL;
|
|
assert((void *)&tmpl.elts.sp == (void *)&tmpl.elts.no_sp);
|
|
err = ((tmpl.sp) ?
|
|
rxq_alloc_elts_sp(&tmpl, desc_n, pool) :
|
|
rxq_alloc_elts(&tmpl, desc_n, pool));
|
|
if (err) {
|
|
ERROR("%p: cannot reallocate WRs, aborting", (void *)dev);
|
|
rte_free(pool);
|
|
assert(err > 0);
|
|
return err;
|
|
}
|
|
assert(tmpl.elts_n == desc_n);
|
|
assert(tmpl.elts.sp != NULL);
|
|
rte_free(pool);
|
|
/* Clean up original data. */
|
|
rxq->elts_n = 0;
|
|
rte_free(rxq->elts.sp);
|
|
rxq->elts.sp = NULL;
|
|
/* Post WRs. */
|
|
err = ibv_post_recv(tmpl.qp,
|
|
(tmpl.sp ?
|
|
&(*tmpl.elts.sp)[0].wr :
|
|
&(*tmpl.elts.no_sp)[0].wr),
|
|
&bad_wr);
|
|
if (err) {
|
|
ERROR("%p: ibv_post_recv() failed for WR %p: %s",
|
|
(void *)dev,
|
|
(void *)bad_wr,
|
|
strerror(err));
|
|
goto skip_rtr;
|
|
}
|
|
mod = (struct ibv_exp_qp_attr){
|
|
.qp_state = IBV_QPS_RTR
|
|
};
|
|
err = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
|
|
if (err)
|
|
ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
|
|
(void *)dev, strerror(err));
|
|
skip_rtr:
|
|
*rxq = tmpl;
|
|
assert(err >= 0);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* Configure a RX queue.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param rxq
|
|
* Pointer to RX queue structure.
|
|
* @param desc
|
|
* Number of descriptors to configure in queue.
|
|
* @param socket
|
|
* NUMA socket on which memory must be allocated.
|
|
* @param[in] conf
|
|
* Thresholds parameters.
|
|
* @param mp
|
|
* Memory pool for buffer allocations.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
|
|
unsigned int socket, const struct rte_eth_rxconf *conf,
|
|
struct rte_mempool *mp)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct rxq tmpl = {
|
|
.priv = priv,
|
|
.mp = mp,
|
|
.socket = socket
|
|
};
|
|
struct ibv_exp_qp_attr mod;
|
|
struct ibv_recv_wr *bad_wr;
|
|
struct rte_mbuf *buf;
|
|
int ret = 0;
|
|
int parent = (rxq == &priv->rxq_parent);
|
|
|
|
(void)conf; /* Thresholds configuration (ignored). */
|
|
/*
|
|
* If this is a parent queue, hardware must support RSS and
|
|
* RSS must be enabled.
|
|
*/
|
|
assert((!parent) || ((priv->hw_rss) && (priv->rss)));
|
|
if (parent) {
|
|
/* Even if unused, ibv_create_cq() requires at least one
|
|
* descriptor. */
|
|
desc = 1;
|
|
goto skip_mr;
|
|
}
|
|
if ((desc == 0) || (desc % MLX4_PMD_SGE_WR_N)) {
|
|
ERROR("%p: invalid number of RX descriptors (must be a"
|
|
" multiple of %d)", (void *)dev, MLX4_PMD_SGE_WR_N);
|
|
return EINVAL;
|
|
}
|
|
/* Get mbuf length. */
|
|
buf = rte_pktmbuf_alloc(mp);
|
|
if (buf == NULL) {
|
|
ERROR("%p: unable to allocate mbuf", (void *)dev);
|
|
return ENOMEM;
|
|
}
|
|
tmpl.mb_len = buf->buf_len;
|
|
assert((rte_pktmbuf_headroom(buf) +
|
|
rte_pktmbuf_tailroom(buf)) == tmpl.mb_len);
|
|
assert(rte_pktmbuf_headroom(buf) == RTE_PKTMBUF_HEADROOM);
|
|
rte_pktmbuf_free(buf);
|
|
/* Enable scattered packets support for this queue if necessary. */
|
|
if ((dev->data->dev_conf.rxmode.jumbo_frame) &&
|
|
(dev->data->dev_conf.rxmode.max_rx_pkt_len >
|
|
(tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) {
|
|
tmpl.sp = 1;
|
|
desc /= MLX4_PMD_SGE_WR_N;
|
|
}
|
|
DEBUG("%p: %s scattered packets support (%u WRs)",
|
|
(void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc);
|
|
/* Use the entire RX mempool as the memory region. */
|
|
tmpl.mr = ibv_reg_mr(priv->pd,
|
|
(void *)mp->elt_va_start,
|
|
(mp->elt_va_end - mp->elt_va_start),
|
|
(IBV_ACCESS_LOCAL_WRITE |
|
|
IBV_ACCESS_REMOTE_WRITE));
|
|
if (tmpl.mr == NULL) {
|
|
ret = EINVAL;
|
|
ERROR("%p: MR creation failure: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
skip_mr:
|
|
tmpl.cq = ibv_create_cq(priv->ctx, desc, NULL, NULL, 0);
|
|
if (tmpl.cq == NULL) {
|
|
ret = ENOMEM;
|
|
ERROR("%p: CQ creation failure: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
DEBUG("priv->device_attr.max_qp_wr is %d",
|
|
priv->device_attr.max_qp_wr);
|
|
DEBUG("priv->device_attr.max_sge is %d",
|
|
priv->device_attr.max_sge);
|
|
#ifdef RSS_SUPPORT
|
|
if (priv->rss)
|
|
tmpl.qp = rxq_setup_qp_rss(priv, tmpl.cq, desc, parent);
|
|
else
|
|
#endif /* RSS_SUPPORT */
|
|
tmpl.qp = rxq_setup_qp(priv, tmpl.cq, desc);
|
|
if (tmpl.qp == NULL) {
|
|
ret = (errno ? errno : EINVAL);
|
|
ERROR("%p: QP creation failure: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
mod = (struct ibv_exp_qp_attr){
|
|
/* Move the QP to this state. */
|
|
.qp_state = IBV_QPS_INIT,
|
|
/* Primary port number. */
|
|
.port_num = priv->port
|
|
};
|
|
ret = ibv_exp_modify_qp(tmpl.qp, &mod,
|
|
(IBV_EXP_QP_STATE |
|
|
#ifdef RSS_SUPPORT
|
|
(parent ? IBV_EXP_QP_GROUP_RSS : 0) |
|
|
#endif /* RSS_SUPPORT */
|
|
IBV_EXP_QP_PORT));
|
|
if (ret) {
|
|
ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
if ((parent) || (!priv->rss)) {
|
|
/* Configure MAC and broadcast addresses. */
|
|
ret = rxq_mac_addrs_add(&tmpl);
|
|
if (ret) {
|
|
ERROR("%p: QP flow attachment failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
}
|
|
/* Allocate descriptors for RX queues, except for the RSS parent. */
|
|
if (parent)
|
|
goto skip_alloc;
|
|
if (tmpl.sp)
|
|
ret = rxq_alloc_elts_sp(&tmpl, desc, NULL);
|
|
else
|
|
ret = rxq_alloc_elts(&tmpl, desc, NULL);
|
|
if (ret) {
|
|
ERROR("%p: RXQ allocation failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
ret = ibv_post_recv(tmpl.qp,
|
|
(tmpl.sp ?
|
|
&(*tmpl.elts.sp)[0].wr :
|
|
&(*tmpl.elts.no_sp)[0].wr),
|
|
&bad_wr);
|
|
if (ret) {
|
|
ERROR("%p: ibv_post_recv() failed for WR %p: %s",
|
|
(void *)dev,
|
|
(void *)bad_wr,
|
|
strerror(ret));
|
|
goto error;
|
|
}
|
|
skip_alloc:
|
|
mod = (struct ibv_exp_qp_attr){
|
|
.qp_state = IBV_QPS_RTR
|
|
};
|
|
ret = ibv_exp_modify_qp(tmpl.qp, &mod, IBV_EXP_QP_STATE);
|
|
if (ret) {
|
|
ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
goto error;
|
|
}
|
|
/* Save port ID. */
|
|
tmpl.port_id = dev->data->port_id;
|
|
DEBUG("%p: RTE port ID: %u", (void *)rxq, tmpl.port_id);
|
|
/* Clean up rxq in case we're reinitializing it. */
|
|
DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq);
|
|
rxq_cleanup(rxq);
|
|
*rxq = tmpl;
|
|
DEBUG("%p: rxq updated with %p", (void *)rxq, (void *)&tmpl);
|
|
assert(ret == 0);
|
|
return 0;
|
|
error:
|
|
rxq_cleanup(&tmpl);
|
|
assert(ret > 0);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to configure a RX queue.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param idx
|
|
* RX queue index.
|
|
* @param desc
|
|
* Number of descriptors to configure in queue.
|
|
* @param socket
|
|
* NUMA socket on which memory must be allocated.
|
|
* @param[in] conf
|
|
* Thresholds parameters.
|
|
* @param mp
|
|
* Memory pool for buffer allocations.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
|
|
unsigned int socket, const struct rte_eth_rxconf *conf,
|
|
struct rte_mempool *mp)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct rxq *rxq = (*priv->rxqs)[idx];
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
DEBUG("%p: configuring queue %u for %u descriptors",
|
|
(void *)dev, idx, desc);
|
|
if (idx >= priv->rxqs_n) {
|
|
ERROR("%p: queue index out of range (%u >= %u)",
|
|
(void *)dev, idx, priv->rxqs_n);
|
|
priv_unlock(priv);
|
|
return -EOVERFLOW;
|
|
}
|
|
if (rxq != NULL) {
|
|
DEBUG("%p: reusing already allocated queue index %u (%p)",
|
|
(void *)dev, idx, (void *)rxq);
|
|
if (priv->started) {
|
|
priv_unlock(priv);
|
|
return -EEXIST;
|
|
}
|
|
(*priv->rxqs)[idx] = NULL;
|
|
rxq_cleanup(rxq);
|
|
} else {
|
|
rxq = rte_calloc_socket("RXQ", 1, sizeof(*rxq), 0, socket);
|
|
if (rxq == NULL) {
|
|
ERROR("%p: unable to allocate queue index %u",
|
|
(void *)dev, idx);
|
|
priv_unlock(priv);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
ret = rxq_setup(dev, rxq, desc, socket, conf, mp);
|
|
if (ret)
|
|
rte_free(rxq);
|
|
else {
|
|
rxq->stats.idx = idx;
|
|
DEBUG("%p: adding RX queue %p to list",
|
|
(void *)dev, (void *)rxq);
|
|
(*priv->rxqs)[idx] = rxq;
|
|
/* Update receive callback. */
|
|
if (rxq->sp)
|
|
dev->rx_pkt_burst = mlx4_rx_burst_sp;
|
|
else
|
|
dev->rx_pkt_burst = mlx4_rx_burst;
|
|
}
|
|
priv_unlock(priv);
|
|
return -ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to release a RX queue.
|
|
*
|
|
* @param dpdk_rxq
|
|
* Generic RX queue pointer.
|
|
*/
|
|
static void
|
|
mlx4_rx_queue_release(void *dpdk_rxq)
|
|
{
|
|
struct rxq *rxq = (struct rxq *)dpdk_rxq;
|
|
struct priv *priv;
|
|
unsigned int i;
|
|
|
|
if (rxq == NULL)
|
|
return;
|
|
priv = rxq->priv;
|
|
priv_lock(priv);
|
|
assert(rxq != &priv->rxq_parent);
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] == rxq) {
|
|
DEBUG("%p: removing RX queue %p from list",
|
|
(void *)priv->dev, (void *)rxq);
|
|
(*priv->rxqs)[i] = NULL;
|
|
break;
|
|
}
|
|
rxq_cleanup(rxq);
|
|
rte_free(rxq);
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to start the device.
|
|
*
|
|
* Simulate device start by attaching all configured flows.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_start(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i = 0;
|
|
unsigned int r;
|
|
struct rxq *rxq;
|
|
|
|
priv_lock(priv);
|
|
if (priv->started) {
|
|
priv_unlock(priv);
|
|
return 0;
|
|
}
|
|
DEBUG("%p: attaching configured flows to all RX queues", (void *)dev);
|
|
priv->started = 1;
|
|
if (priv->rss) {
|
|
rxq = &priv->rxq_parent;
|
|
r = 1;
|
|
} else {
|
|
rxq = (*priv->rxqs)[0];
|
|
r = priv->rxqs_n;
|
|
}
|
|
/* Iterate only once when RSS is enabled. */
|
|
do {
|
|
int ret;
|
|
|
|
/* Ignore nonexistent RX queues. */
|
|
if (rxq == NULL)
|
|
continue;
|
|
ret = rxq_mac_addrs_add(rxq);
|
|
if (!ret && priv->promisc)
|
|
ret = rxq_promiscuous_enable(rxq);
|
|
if (!ret && priv->allmulti)
|
|
ret = rxq_allmulticast_enable(rxq);
|
|
if (!ret)
|
|
continue;
|
|
WARN("%p: QP flow attachment failed: %s",
|
|
(void *)dev, strerror(ret));
|
|
/* Rollback. */
|
|
while (i != 0) {
|
|
rxq = (*priv->rxqs)[--i];
|
|
if (rxq != NULL) {
|
|
rxq_allmulticast_disable(rxq);
|
|
rxq_promiscuous_disable(rxq);
|
|
rxq_mac_addrs_del(rxq);
|
|
}
|
|
}
|
|
priv->started = 0;
|
|
return -ret;
|
|
} while ((--r) && ((rxq = (*priv->rxqs)[++i]), i));
|
|
priv_unlock(priv);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to stop the device.
|
|
*
|
|
* Simulate device stop by detaching all configured flows.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_dev_stop(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i = 0;
|
|
unsigned int r;
|
|
struct rxq *rxq;
|
|
|
|
priv_lock(priv);
|
|
if (!priv->started) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
DEBUG("%p: detaching flows from all RX queues", (void *)dev);
|
|
priv->started = 0;
|
|
if (priv->rss) {
|
|
rxq = &priv->rxq_parent;
|
|
r = 1;
|
|
} else {
|
|
rxq = (*priv->rxqs)[0];
|
|
r = priv->rxqs_n;
|
|
}
|
|
/* Iterate only once when RSS is enabled. */
|
|
do {
|
|
/* Ignore nonexistent RX queues. */
|
|
if (rxq == NULL)
|
|
continue;
|
|
rxq_allmulticast_disable(rxq);
|
|
rxq_promiscuous_disable(rxq);
|
|
rxq_mac_addrs_del(rxq);
|
|
} while ((--r) && ((rxq = (*priv->rxqs)[++i]), i));
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* Dummy DPDK callback for TX.
|
|
*
|
|
* This function is used to temporarily replace the real callback during
|
|
* unsafe control operations on the queue, or in case of error.
|
|
*
|
|
* @param dpdk_txq
|
|
* Generic pointer to TX queue structure.
|
|
* @param[in] pkts
|
|
* Packets to transmit.
|
|
* @param pkts_n
|
|
* Number of packets in array.
|
|
*
|
|
* @return
|
|
* Number of packets successfully transmitted (<= pkts_n).
|
|
*/
|
|
static uint16_t
|
|
removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
|
|
{
|
|
(void)dpdk_txq;
|
|
(void)pkts;
|
|
(void)pkts_n;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Dummy DPDK callback for RX.
|
|
*
|
|
* This function is used to temporarily replace the real callback during
|
|
* unsafe control operations on the queue, or in case of error.
|
|
*
|
|
* @param dpdk_rxq
|
|
* Generic pointer to RX queue structure.
|
|
* @param[out] pkts
|
|
* Array to store received packets.
|
|
* @param pkts_n
|
|
* Maximum number of packets in array.
|
|
*
|
|
* @return
|
|
* Number of packets successfully received (<= pkts_n).
|
|
*/
|
|
static uint16_t
|
|
removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
|
|
{
|
|
(void)dpdk_rxq;
|
|
(void)pkts;
|
|
(void)pkts_n;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to close the device.
|
|
*
|
|
* Destroy all queues and objects, free memory.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_dev_close(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
void *tmp;
|
|
unsigned int i;
|
|
|
|
priv_lock(priv);
|
|
DEBUG("%p: closing device \"%s\"",
|
|
(void *)dev,
|
|
((priv->ctx != NULL) ? priv->ctx->device->name : ""));
|
|
/* Prevent crashes when queues are still in use. This is unfortunately
|
|
* still required for DPDK 1.3 because some programs (such as testpmd)
|
|
* never release them before closing the device. */
|
|
dev->rx_pkt_burst = removed_rx_burst;
|
|
dev->tx_pkt_burst = removed_tx_burst;
|
|
if (priv->rxqs != NULL) {
|
|
/* XXX race condition if mlx4_rx_burst() is still running. */
|
|
usleep(1000);
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
tmp = (*priv->rxqs)[i];
|
|
if (tmp == NULL)
|
|
continue;
|
|
(*priv->rxqs)[i] = NULL;
|
|
rxq_cleanup(tmp);
|
|
rte_free(tmp);
|
|
}
|
|
priv->rxqs_n = 0;
|
|
priv->rxqs = NULL;
|
|
}
|
|
if (priv->txqs != NULL) {
|
|
/* XXX race condition if mlx4_tx_burst() is still running. */
|
|
usleep(1000);
|
|
for (i = 0; (i != priv->txqs_n); ++i) {
|
|
tmp = (*priv->txqs)[i];
|
|
if (tmp == NULL)
|
|
continue;
|
|
(*priv->txqs)[i] = NULL;
|
|
txq_cleanup(tmp);
|
|
rte_free(tmp);
|
|
}
|
|
priv->txqs_n = 0;
|
|
priv->txqs = NULL;
|
|
}
|
|
if (priv->rss)
|
|
rxq_cleanup(&priv->rxq_parent);
|
|
if (priv->pd != NULL) {
|
|
assert(priv->ctx != NULL);
|
|
claim_zero(ibv_dealloc_pd(priv->pd));
|
|
claim_zero(ibv_close_device(priv->ctx));
|
|
} else
|
|
assert(priv->ctx == NULL);
|
|
priv_unlock(priv);
|
|
memset(priv, 0, sizeof(*priv));
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to get information about the device.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param[out] info
|
|
* Info structure output buffer.
|
|
*/
|
|
static void
|
|
mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int max;
|
|
|
|
priv_lock(priv);
|
|
/* FIXME: we should ask the device for these values. */
|
|
info->min_rx_bufsize = 32;
|
|
info->max_rx_pktlen = 65536;
|
|
/*
|
|
* Since we need one CQ per QP, the limit is the minimum number
|
|
* between the two values.
|
|
*/
|
|
max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
|
|
priv->device_attr.max_qp : priv->device_attr.max_cq);
|
|
/* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
|
|
if (max >= 65535)
|
|
max = 65535;
|
|
info->max_rx_queues = max;
|
|
info->max_tx_queues = max;
|
|
info->max_mac_addrs = elemof(priv->mac);
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to get device statistics.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param[out] stats
|
|
* Stats structure output buffer.
|
|
*/
|
|
static void
|
|
mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct rte_eth_stats tmp = {0};
|
|
unsigned int i;
|
|
unsigned int idx;
|
|
|
|
priv_lock(priv);
|
|
/* Add software counters. */
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
struct rxq *rxq = (*priv->rxqs)[i];
|
|
|
|
if (rxq == NULL)
|
|
continue;
|
|
idx = rxq->stats.idx;
|
|
if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
tmp.q_ipackets[idx] += rxq->stats.ipackets;
|
|
tmp.q_ibytes[idx] += rxq->stats.ibytes;
|
|
#endif
|
|
tmp.q_errors[idx] += (rxq->stats.idropped +
|
|
rxq->stats.rx_nombuf);
|
|
}
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
tmp.ipackets += rxq->stats.ipackets;
|
|
tmp.ibytes += rxq->stats.ibytes;
|
|
#endif
|
|
tmp.ierrors += rxq->stats.idropped;
|
|
tmp.rx_nombuf += rxq->stats.rx_nombuf;
|
|
}
|
|
for (i = 0; (i != priv->txqs_n); ++i) {
|
|
struct txq *txq = (*priv->txqs)[i];
|
|
|
|
if (txq == NULL)
|
|
continue;
|
|
idx = txq->stats.idx;
|
|
if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
tmp.q_opackets[idx] += txq->stats.opackets;
|
|
tmp.q_obytes[idx] += txq->stats.obytes;
|
|
#endif
|
|
tmp.q_errors[idx] += txq->stats.odropped;
|
|
}
|
|
#ifdef MLX4_PMD_SOFT_COUNTERS
|
|
tmp.opackets += txq->stats.opackets;
|
|
tmp.obytes += txq->stats.obytes;
|
|
#endif
|
|
tmp.oerrors += txq->stats.odropped;
|
|
}
|
|
#ifndef MLX4_PMD_SOFT_COUNTERS
|
|
/* FIXME: retrieve and add hardware counters. */
|
|
#endif
|
|
*stats = tmp;
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to clear device statistics.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_stats_reset(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
unsigned int idx;
|
|
|
|
priv_lock(priv);
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
idx = (*priv->rxqs)[i]->stats.idx;
|
|
(*priv->rxqs)[i]->stats =
|
|
(struct mlx4_rxq_stats){ .idx = idx };
|
|
}
|
|
for (i = 0; (i != priv->txqs_n); ++i) {
|
|
if ((*priv->txqs)[i] == NULL)
|
|
continue;
|
|
idx = (*priv->rxqs)[i]->stats.idx;
|
|
(*priv->txqs)[i]->stats =
|
|
(struct mlx4_txq_stats){ .idx = idx };
|
|
}
|
|
#ifndef MLX4_PMD_SOFT_COUNTERS
|
|
/* FIXME: reset hardware counters. */
|
|
#endif
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to remove a MAC address.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param index
|
|
* MAC address index.
|
|
*/
|
|
static void
|
|
mlx4_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
|
|
priv_lock(priv);
|
|
DEBUG("%p: removing MAC address from index %" PRIu32,
|
|
(void *)dev, index);
|
|
if (index >= MLX4_MAX_MAC_ADDRESSES)
|
|
goto end;
|
|
/* Refuse to remove the broadcast address, this one is special. */
|
|
if (!memcmp(priv->mac[index].addr_bytes, "\xff\xff\xff\xff\xff\xff",
|
|
ETHER_ADDR_LEN))
|
|
goto end;
|
|
priv_mac_addr_del(priv, index);
|
|
end:
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to add a MAC address.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param mac_addr
|
|
* MAC address to register.
|
|
* @param index
|
|
* MAC address index.
|
|
* @param vmdq
|
|
* VMDq pool index to associate address with (ignored).
|
|
*/
|
|
static void
|
|
mlx4_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
|
|
uint32_t index, uint32_t vmdq)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
|
|
(void)vmdq;
|
|
priv_lock(priv);
|
|
DEBUG("%p: adding MAC address at index %" PRIu32,
|
|
(void *)dev, index);
|
|
if (index >= MLX4_MAX_MAC_ADDRESSES)
|
|
goto end;
|
|
/* Refuse to add the broadcast address, this one is special. */
|
|
if (!memcmp(mac_addr->addr_bytes, "\xff\xff\xff\xff\xff\xff",
|
|
ETHER_ADDR_LEN))
|
|
goto end;
|
|
priv_mac_addr_add(priv, index,
|
|
(const uint8_t (*)[ETHER_ADDR_LEN])
|
|
mac_addr->addr_bytes);
|
|
end:
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to enable promiscuous mode.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_promiscuous_enable(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
if (priv->promisc) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
/* If device isn't started, this is all we need to do. */
|
|
if (!priv->started)
|
|
goto end;
|
|
if (priv->rss) {
|
|
ret = rxq_promiscuous_enable(&priv->rxq_parent);
|
|
if (ret) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
ret = rxq_promiscuous_enable((*priv->rxqs)[i]);
|
|
if (!ret)
|
|
continue;
|
|
/* Failure, rollback. */
|
|
while (i != 0)
|
|
if ((*priv->rxqs)[--i] != NULL)
|
|
rxq_promiscuous_disable((*priv->rxqs)[i]);
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
end:
|
|
priv->promisc = 1;
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to disable promiscuous mode.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_promiscuous_disable(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
|
|
priv_lock(priv);
|
|
if (!priv->promisc) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
if (priv->rss) {
|
|
rxq_promiscuous_disable(&priv->rxq_parent);
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] != NULL)
|
|
rxq_promiscuous_disable((*priv->rxqs)[i]);
|
|
end:
|
|
priv->promisc = 0;
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to enable allmulti mode.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_allmulticast_enable(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
if (priv->allmulti) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
/* If device isn't started, this is all we need to do. */
|
|
if (!priv->started)
|
|
goto end;
|
|
if (priv->rss) {
|
|
ret = rxq_allmulticast_enable(&priv->rxq_parent);
|
|
if (ret) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
ret = rxq_allmulticast_enable((*priv->rxqs)[i]);
|
|
if (!ret)
|
|
continue;
|
|
/* Failure, rollback. */
|
|
while (i != 0)
|
|
if ((*priv->rxqs)[--i] != NULL)
|
|
rxq_allmulticast_disable((*priv->rxqs)[i]);
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
end:
|
|
priv->allmulti = 1;
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to disable allmulti mode.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
*/
|
|
static void
|
|
mlx4_allmulticast_disable(struct rte_eth_dev *dev)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
|
|
priv_lock(priv);
|
|
if (!priv->allmulti) {
|
|
priv_unlock(priv);
|
|
return;
|
|
}
|
|
if (priv->rss) {
|
|
rxq_allmulticast_disable(&priv->rxq_parent);
|
|
goto end;
|
|
}
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] != NULL)
|
|
rxq_allmulticast_disable((*priv->rxqs)[i]);
|
|
end:
|
|
priv->allmulti = 0;
|
|
priv_unlock(priv);
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to retrieve physical link information (unlocked version).
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param wait_to_complete
|
|
* Wait for request completion (ignored).
|
|
*/
|
|
static int
|
|
mlx4_link_update_unlocked(struct rte_eth_dev *dev, int wait_to_complete)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct ethtool_cmd edata = {
|
|
.cmd = ETHTOOL_GSET
|
|
};
|
|
struct ifreq ifr;
|
|
struct rte_eth_link dev_link;
|
|
int link_speed = 0;
|
|
|
|
(void)wait_to_complete;
|
|
if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
|
|
WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
|
|
return -1;
|
|
}
|
|
memset(&dev_link, 0, sizeof(dev_link));
|
|
dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
|
|
(ifr.ifr_flags & IFF_RUNNING));
|
|
ifr.ifr_data = &edata;
|
|
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
|
|
WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
link_speed = ethtool_cmd_speed(&edata);
|
|
if (link_speed == -1)
|
|
dev_link.link_speed = 0;
|
|
else
|
|
dev_link.link_speed = link_speed;
|
|
dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
|
|
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
|
|
if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
|
|
/* Link status changed. */
|
|
dev->data->dev_link = dev_link;
|
|
return 0;
|
|
}
|
|
/* Link status is still the same. */
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to retrieve physical link information.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param wait_to_complete
|
|
* Wait for request completion (ignored).
|
|
*/
|
|
static int
|
|
mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
ret = mlx4_link_update_unlocked(dev, wait_to_complete);
|
|
priv_unlock(priv);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to change the MTU.
|
|
*
|
|
* Setting the MTU affects hardware MRU (packets larger than the MTU cannot be
|
|
* received). Use this as a hint to enable/disable scattered packets support
|
|
* and improve performance when not needed.
|
|
* Since failure is not an option, reconfiguring queues on the fly is not
|
|
* recommended.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param in_mtu
|
|
* New MTU.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
int ret = 0;
|
|
unsigned int i;
|
|
uint16_t (*rx_func)(void *, struct rte_mbuf **, uint16_t) =
|
|
mlx4_rx_burst;
|
|
|
|
priv_lock(priv);
|
|
/* Set kernel interface MTU first. */
|
|
if (priv_set_mtu(priv, mtu)) {
|
|
ret = errno;
|
|
WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
|
|
strerror(ret));
|
|
goto out;
|
|
} else
|
|
DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
|
|
priv->mtu = mtu;
|
|
/* Temporarily replace RX handler with a fake one, assuming it has not
|
|
* been copied elsewhere. */
|
|
dev->rx_pkt_burst = removed_rx_burst;
|
|
/* Make sure everyone has left mlx4_rx_burst() and uses
|
|
* removed_rx_burst() instead. */
|
|
rte_wmb();
|
|
usleep(1000);
|
|
/* Reconfigure each RX queue. */
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
struct rxq *rxq = (*priv->rxqs)[i];
|
|
unsigned int max_frame_len;
|
|
int sp;
|
|
|
|
if (rxq == NULL)
|
|
continue;
|
|
/* Calculate new maximum frame length according to MTU and
|
|
* toggle scattered support (sp) if necessary. */
|
|
max_frame_len = (priv->mtu + ETHER_HDR_LEN +
|
|
(ETHER_MAX_VLAN_FRAME_LEN - ETHER_MAX_LEN));
|
|
sp = (max_frame_len > (rxq->mb_len - RTE_PKTMBUF_HEADROOM));
|
|
/* Provide new values to rxq_setup(). */
|
|
dev->data->dev_conf.rxmode.jumbo_frame = sp;
|
|
dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame_len;
|
|
ret = rxq_rehash(dev, rxq);
|
|
if (ret) {
|
|
/* Force SP RX if that queue requires it and abort. */
|
|
if (rxq->sp)
|
|
rx_func = mlx4_rx_burst_sp;
|
|
break;
|
|
}
|
|
/* Reenable non-RSS queue attributes. No need to check
|
|
* for errors at this stage. */
|
|
if (!priv->rss) {
|
|
rxq_mac_addrs_add(rxq);
|
|
if (priv->promisc)
|
|
rxq_promiscuous_enable(rxq);
|
|
if (priv->allmulti)
|
|
rxq_allmulticast_enable(rxq);
|
|
}
|
|
/* Scattered burst function takes priority. */
|
|
if (rxq->sp)
|
|
rx_func = mlx4_rx_burst_sp;
|
|
}
|
|
/* Burst functions can now be called again. */
|
|
rte_wmb();
|
|
dev->rx_pkt_burst = rx_func;
|
|
out:
|
|
priv_unlock(priv);
|
|
assert(ret >= 0);
|
|
return -ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to get flow control status.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param[out] fc_conf
|
|
* Flow control output buffer.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct ifreq ifr;
|
|
struct ethtool_pauseparam ethpause = {
|
|
.cmd = ETHTOOL_GPAUSEPARAM
|
|
};
|
|
int ret;
|
|
|
|
ifr.ifr_data = ðpause;
|
|
priv_lock(priv);
|
|
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
|
|
ret = errno;
|
|
WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
|
|
" failed: %s",
|
|
strerror(ret));
|
|
goto out;
|
|
}
|
|
|
|
fc_conf->autoneg = ethpause.autoneg;
|
|
if (ethpause.rx_pause && ethpause.tx_pause)
|
|
fc_conf->mode = RTE_FC_FULL;
|
|
else if (ethpause.rx_pause)
|
|
fc_conf->mode = RTE_FC_RX_PAUSE;
|
|
else if (ethpause.tx_pause)
|
|
fc_conf->mode = RTE_FC_TX_PAUSE;
|
|
else
|
|
fc_conf->mode = RTE_FC_NONE;
|
|
ret = 0;
|
|
|
|
out:
|
|
priv_unlock(priv);
|
|
assert(ret >= 0);
|
|
return -ret;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to modify flow control parameters.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param[in] fc_conf
|
|
* Flow control parameters.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
struct ifreq ifr;
|
|
struct ethtool_pauseparam ethpause = {
|
|
.cmd = ETHTOOL_SPAUSEPARAM
|
|
};
|
|
int ret;
|
|
|
|
ifr.ifr_data = ðpause;
|
|
ethpause.autoneg = fc_conf->autoneg;
|
|
if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
|
|
(fc_conf->mode & RTE_FC_RX_PAUSE))
|
|
ethpause.rx_pause = 1;
|
|
else
|
|
ethpause.rx_pause = 0;
|
|
|
|
if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
|
|
(fc_conf->mode & RTE_FC_TX_PAUSE))
|
|
ethpause.tx_pause = 1;
|
|
else
|
|
ethpause.tx_pause = 0;
|
|
|
|
priv_lock(priv);
|
|
if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
|
|
ret = errno;
|
|
WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
|
|
" failed: %s",
|
|
strerror(ret));
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
|
|
out:
|
|
priv_unlock(priv);
|
|
assert(ret >= 0);
|
|
return -ret;
|
|
}
|
|
|
|
/**
|
|
* Configure a VLAN filter.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param vlan_id
|
|
* VLAN ID to filter.
|
|
* @param on
|
|
* Toggle filter.
|
|
*
|
|
* @return
|
|
* 0 on success, errno value on failure.
|
|
*/
|
|
static int
|
|
vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
unsigned int i;
|
|
unsigned int j = -1;
|
|
|
|
DEBUG("%p: %s VLAN filter ID %" PRIu16,
|
|
(void *)dev, (on ? "enable" : "disable"), vlan_id);
|
|
for (i = 0; (i != elemof(priv->vlan_filter)); ++i) {
|
|
if (!priv->vlan_filter[i].enabled) {
|
|
/* Unused index, remember it. */
|
|
j = i;
|
|
continue;
|
|
}
|
|
if (priv->vlan_filter[i].id != vlan_id)
|
|
continue;
|
|
/* This VLAN ID is already known, use its index. */
|
|
j = i;
|
|
break;
|
|
}
|
|
/* Check if there's room for another VLAN filter. */
|
|
if (j == (unsigned int)-1)
|
|
return ENOMEM;
|
|
/*
|
|
* VLAN filters apply to all configured MAC addresses, flow
|
|
* specifications must be reconfigured accordingly.
|
|
*/
|
|
priv->vlan_filter[j].id = vlan_id;
|
|
if ((on) && (!priv->vlan_filter[j].enabled)) {
|
|
/*
|
|
* Filter is disabled, enable it.
|
|
* Rehashing flows in all RX queues is necessary.
|
|
*/
|
|
if (priv->rss)
|
|
rxq_mac_addrs_del(&priv->rxq_parent);
|
|
else
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] != NULL)
|
|
rxq_mac_addrs_del((*priv->rxqs)[i]);
|
|
priv->vlan_filter[j].enabled = 1;
|
|
if (priv->started) {
|
|
if (priv->rss)
|
|
rxq_mac_addrs_add(&priv->rxq_parent);
|
|
else
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
rxq_mac_addrs_add((*priv->rxqs)[i]);
|
|
}
|
|
}
|
|
} else if ((!on) && (priv->vlan_filter[j].enabled)) {
|
|
/*
|
|
* Filter is enabled, disable it.
|
|
* Rehashing flows in all RX queues is necessary.
|
|
*/
|
|
if (priv->rss)
|
|
rxq_mac_addrs_del(&priv->rxq_parent);
|
|
else
|
|
for (i = 0; (i != priv->rxqs_n); ++i)
|
|
if ((*priv->rxqs)[i] != NULL)
|
|
rxq_mac_addrs_del((*priv->rxqs)[i]);
|
|
priv->vlan_filter[j].enabled = 0;
|
|
if (priv->started) {
|
|
if (priv->rss)
|
|
rxq_mac_addrs_add(&priv->rxq_parent);
|
|
else
|
|
for (i = 0; (i != priv->rxqs_n); ++i) {
|
|
if ((*priv->rxqs)[i] == NULL)
|
|
continue;
|
|
rxq_mac_addrs_add((*priv->rxqs)[i]);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* DPDK callback to configure a VLAN filter.
|
|
*
|
|
* @param dev
|
|
* Pointer to Ethernet device structure.
|
|
* @param vlan_id
|
|
* VLAN ID to filter.
|
|
* @param on
|
|
* Toggle filter.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
|
|
{
|
|
struct priv *priv = dev->data->dev_private;
|
|
int ret;
|
|
|
|
priv_lock(priv);
|
|
ret = vlan_filter_set(dev, vlan_id, on);
|
|
priv_unlock(priv);
|
|
assert(ret >= 0);
|
|
return -ret;
|
|
}
|
|
|
|
static const struct eth_dev_ops mlx4_dev_ops = {
|
|
.dev_configure = mlx4_dev_configure,
|
|
.dev_start = mlx4_dev_start,
|
|
.dev_stop = mlx4_dev_stop,
|
|
.dev_close = mlx4_dev_close,
|
|
.promiscuous_enable = mlx4_promiscuous_enable,
|
|
.promiscuous_disable = mlx4_promiscuous_disable,
|
|
.allmulticast_enable = mlx4_allmulticast_enable,
|
|
.allmulticast_disable = mlx4_allmulticast_disable,
|
|
.link_update = mlx4_link_update,
|
|
.stats_get = mlx4_stats_get,
|
|
.stats_reset = mlx4_stats_reset,
|
|
.queue_stats_mapping_set = NULL,
|
|
.dev_infos_get = mlx4_dev_infos_get,
|
|
.vlan_filter_set = mlx4_vlan_filter_set,
|
|
.vlan_tpid_set = NULL,
|
|
.vlan_strip_queue_set = NULL,
|
|
.vlan_offload_set = NULL,
|
|
.rx_queue_setup = mlx4_rx_queue_setup,
|
|
.tx_queue_setup = mlx4_tx_queue_setup,
|
|
.rx_queue_release = mlx4_rx_queue_release,
|
|
.tx_queue_release = mlx4_tx_queue_release,
|
|
.dev_led_on = NULL,
|
|
.dev_led_off = NULL,
|
|
.flow_ctrl_get = mlx4_dev_get_flow_ctrl,
|
|
.flow_ctrl_set = mlx4_dev_set_flow_ctrl,
|
|
.priority_flow_ctrl_set = NULL,
|
|
.mac_addr_remove = mlx4_mac_addr_remove,
|
|
.mac_addr_add = mlx4_mac_addr_add,
|
|
.mtu_set = mlx4_dev_set_mtu,
|
|
.fdir_add_signature_filter = NULL,
|
|
.fdir_update_signature_filter = NULL,
|
|
.fdir_remove_signature_filter = NULL,
|
|
.fdir_add_perfect_filter = NULL,
|
|
.fdir_update_perfect_filter = NULL,
|
|
.fdir_remove_perfect_filter = NULL,
|
|
.fdir_set_masks = NULL
|
|
};
|
|
|
|
/**
|
|
* Get PCI information from struct ibv_device.
|
|
*
|
|
* @param device
|
|
* Pointer to Ethernet device structure.
|
|
* @param[out] pci_addr
|
|
* PCI bus address output buffer.
|
|
*
|
|
* @return
|
|
* 0 on success, -1 on failure and errno is set.
|
|
*/
|
|
static int
|
|
mlx4_ibv_device_to_pci_addr(const struct ibv_device *device,
|
|
struct rte_pci_addr *pci_addr)
|
|
{
|
|
FILE *file;
|
|
char line[32];
|
|
MKSTR(path, "%s/device/uevent", device->ibdev_path);
|
|
|
|
file = fopen(path, "rb");
|
|
if (file == NULL)
|
|
return -1;
|
|
while (fgets(line, sizeof(line), file) == line) {
|
|
size_t len = strlen(line);
|
|
int ret;
|
|
|
|
/* Truncate long lines. */
|
|
if (len == (sizeof(line) - 1))
|
|
while (line[(len - 1)] != '\n') {
|
|
ret = fgetc(file);
|
|
if (ret == EOF)
|
|
break;
|
|
line[(len - 1)] = ret;
|
|
}
|
|
/* Extract information. */
|
|
if (sscanf(line,
|
|
"PCI_SLOT_NAME="
|
|
"%" SCNx16 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
|
|
&pci_addr->domain,
|
|
&pci_addr->bus,
|
|
&pci_addr->devid,
|
|
&pci_addr->function) == 4) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
}
|
|
fclose(file);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Derive MAC address from port GID.
|
|
*
|
|
* @param[out] mac
|
|
* MAC address output buffer.
|
|
* @param port
|
|
* Physical port number.
|
|
* @param[in] gid
|
|
* Port GID.
|
|
*/
|
|
static void
|
|
mac_from_gid(uint8_t (*mac)[ETHER_ADDR_LEN], uint32_t port, uint8_t *gid)
|
|
{
|
|
memcpy(&(*mac)[0], gid + 8, 3);
|
|
memcpy(&(*mac)[3], gid + 13, 3);
|
|
if (port == 1)
|
|
(*mac)[0] ^= 2;
|
|
}
|
|
|
|
/* Support up to 32 adapters. */
|
|
static struct {
|
|
struct rte_pci_addr pci_addr; /* associated PCI address */
|
|
uint32_t ports; /* physical ports bitfield. */
|
|
} mlx4_dev[32];
|
|
|
|
/**
|
|
* Get device index in mlx4_dev[] from PCI bus address.
|
|
*
|
|
* @param[in] pci_addr
|
|
* PCI bus address to look for.
|
|
*
|
|
* @return
|
|
* mlx4_dev[] index on success, -1 on failure.
|
|
*/
|
|
static int
|
|
mlx4_dev_idx(struct rte_pci_addr *pci_addr)
|
|
{
|
|
unsigned int i;
|
|
int ret = -1;
|
|
|
|
assert(pci_addr != NULL);
|
|
for (i = 0; (i != elemof(mlx4_dev)); ++i) {
|
|
if ((mlx4_dev[i].pci_addr.domain == pci_addr->domain) &&
|
|
(mlx4_dev[i].pci_addr.bus == pci_addr->bus) &&
|
|
(mlx4_dev[i].pci_addr.devid == pci_addr->devid) &&
|
|
(mlx4_dev[i].pci_addr.function == pci_addr->function))
|
|
return i;
|
|
if ((mlx4_dev[i].ports == 0) && (ret == -1))
|
|
ret = i;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Retrieve integer value from environment variable.
|
|
*
|
|
* @param[in] name
|
|
* Environment variable name.
|
|
*
|
|
* @return
|
|
* Integer value, 0 if the variable is not set.
|
|
*/
|
|
static int
|
|
mlx4_getenv_int(const char *name)
|
|
{
|
|
const char *val = getenv(name);
|
|
|
|
if (val == NULL)
|
|
return 0;
|
|
return atoi(val);
|
|
}
|
|
|
|
static struct eth_driver mlx4_driver;
|
|
|
|
/**
|
|
* DPDK callback to register a PCI device.
|
|
*
|
|
* This function creates an Ethernet device for each port of a given
|
|
* PCI device.
|
|
*
|
|
* @param[in] pci_drv
|
|
* PCI driver structure (mlx4_driver).
|
|
* @param[in] pci_dev
|
|
* PCI device information.
|
|
*
|
|
* @return
|
|
* 0 on success, negative errno value on failure.
|
|
*/
|
|
static int
|
|
mlx4_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
|
|
{
|
|
struct ibv_device **list;
|
|
struct ibv_device *ibv_dev;
|
|
int err = 0;
|
|
struct ibv_context *attr_ctx = NULL;
|
|
struct ibv_device_attr device_attr;
|
|
unsigned int vf;
|
|
int idx;
|
|
int i;
|
|
|
|
(void)pci_drv;
|
|
assert(pci_drv == &mlx4_driver.pci_drv);
|
|
/* Get mlx4_dev[] index. */
|
|
idx = mlx4_dev_idx(&pci_dev->addr);
|
|
if (idx == -1) {
|
|
ERROR("this driver cannot support any more adapters");
|
|
return -ENOMEM;
|
|
}
|
|
DEBUG("using driver device index %d", idx);
|
|
|
|
/* Save PCI address. */
|
|
mlx4_dev[idx].pci_addr = pci_dev->addr;
|
|
list = ibv_get_device_list(&i);
|
|
if (list == NULL) {
|
|
assert(errno);
|
|
if (errno == ENOSYS) {
|
|
WARN("cannot list devices, is ib_uverbs loaded?");
|
|
return 0;
|
|
}
|
|
return -errno;
|
|
}
|
|
assert(i >= 0);
|
|
/*
|
|
* For each listed device, check related sysfs entry against
|
|
* the provided PCI ID.
|
|
*/
|
|
while (i != 0) {
|
|
struct rte_pci_addr pci_addr;
|
|
|
|
--i;
|
|
DEBUG("checking device \"%s\"", list[i]->name);
|
|
if (mlx4_ibv_device_to_pci_addr(list[i], &pci_addr))
|
|
continue;
|
|
if ((pci_dev->addr.domain != pci_addr.domain) ||
|
|
(pci_dev->addr.bus != pci_addr.bus) ||
|
|
(pci_dev->addr.devid != pci_addr.devid) ||
|
|
(pci_dev->addr.function != pci_addr.function))
|
|
continue;
|
|
vf = (pci_dev->id.device_id ==
|
|
PCI_DEVICE_ID_MELLANOX_CONNECTX3VF);
|
|
INFO("PCI information matches, using device \"%s\" (VF: %s)",
|
|
list[i]->name, (vf ? "true" : "false"));
|
|
attr_ctx = ibv_open_device(list[i]);
|
|
err = errno;
|
|
break;
|
|
}
|
|
if (attr_ctx == NULL) {
|
|
ibv_free_device_list(list);
|
|
switch (err) {
|
|
case 0:
|
|
WARN("cannot access device, is mlx4_ib loaded?");
|
|
return 0;
|
|
case EINVAL:
|
|
WARN("cannot use device, are drivers up to date?");
|
|
return 0;
|
|
}
|
|
assert(err > 0);
|
|
return -err;
|
|
}
|
|
ibv_dev = list[i];
|
|
|
|
DEBUG("device opened");
|
|
if (ibv_query_device(attr_ctx, &device_attr))
|
|
goto error;
|
|
INFO("%u port(s) detected", device_attr.phys_port_cnt);
|
|
|
|
for (i = 0; i < device_attr.phys_port_cnt; i++) {
|
|
uint32_t port = i + 1; /* ports are indexed from one */
|
|
uint32_t test = (1 << i);
|
|
struct ibv_context *ctx = NULL;
|
|
struct ibv_port_attr port_attr;
|
|
struct ibv_pd *pd = NULL;
|
|
struct priv *priv = NULL;
|
|
struct rte_eth_dev *eth_dev;
|
|
#ifdef HAVE_EXP_QUERY_DEVICE
|
|
struct ibv_exp_device_attr exp_device_attr;
|
|
#endif /* HAVE_EXP_QUERY_DEVICE */
|
|
struct ether_addr mac;
|
|
union ibv_gid temp_gid;
|
|
|
|
#ifdef HAVE_EXP_QUERY_DEVICE
|
|
exp_device_attr.comp_mask = IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS;
|
|
#ifdef RSS_SUPPORT
|
|
exp_device_attr.comp_mask |= IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ;
|
|
#endif /* RSS_SUPPORT */
|
|
#endif /* HAVE_EXP_QUERY_DEVICE */
|
|
|
|
DEBUG("using port %u (%08" PRIx32 ")", port, test);
|
|
|
|
ctx = ibv_open_device(ibv_dev);
|
|
if (ctx == NULL)
|
|
goto port_error;
|
|
|
|
/* Check port status. */
|
|
err = ibv_query_port(ctx, port, &port_attr);
|
|
if (err) {
|
|
ERROR("port query failed: %s", strerror(err));
|
|
goto port_error;
|
|
}
|
|
if (port_attr.state != IBV_PORT_ACTIVE)
|
|
WARN("bad state for port %d: \"%s\" (%d)",
|
|
port, ibv_port_state_str(port_attr.state),
|
|
port_attr.state);
|
|
|
|
/* Allocate protection domain. */
|
|
pd = ibv_alloc_pd(ctx);
|
|
if (pd == NULL) {
|
|
ERROR("PD allocation failure");
|
|
err = ENOMEM;
|
|
goto port_error;
|
|
}
|
|
|
|
mlx4_dev[idx].ports |= test;
|
|
|
|
/* from rte_ethdev.c */
|
|
priv = rte_zmalloc("ethdev private structure",
|
|
sizeof(*priv),
|
|
RTE_CACHE_LINE_SIZE);
|
|
if (priv == NULL) {
|
|
ERROR("priv allocation failure");
|
|
err = ENOMEM;
|
|
goto port_error;
|
|
}
|
|
|
|
priv->ctx = ctx;
|
|
priv->device_attr = device_attr;
|
|
priv->port = port;
|
|
priv->pd = pd;
|
|
priv->mtu = ETHER_MTU;
|
|
#ifdef HAVE_EXP_QUERY_DEVICE
|
|
if (ibv_exp_query_device(ctx, &exp_device_attr)) {
|
|
ERROR("ibv_exp_query_device() failed");
|
|
goto port_error;
|
|
}
|
|
#ifdef RSS_SUPPORT
|
|
if ((exp_device_attr.exp_device_cap_flags &
|
|
IBV_EXP_DEVICE_QPG) &&
|
|
(exp_device_attr.exp_device_cap_flags &
|
|
IBV_EXP_DEVICE_UD_RSS) &&
|
|
(exp_device_attr.comp_mask &
|
|
IBV_EXP_DEVICE_ATTR_RSS_TBL_SZ) &&
|
|
(exp_device_attr.max_rss_tbl_sz > 0)) {
|
|
priv->hw_qpg = 1;
|
|
priv->hw_rss = 1;
|
|
priv->max_rss_tbl_sz = exp_device_attr.max_rss_tbl_sz;
|
|
} else {
|
|
priv->hw_qpg = 0;
|
|
priv->hw_rss = 0;
|
|
priv->max_rss_tbl_sz = 0;
|
|
}
|
|
priv->hw_tss = !!(exp_device_attr.exp_device_cap_flags &
|
|
IBV_EXP_DEVICE_UD_TSS);
|
|
DEBUG("device flags: %s%s%s",
|
|
(priv->hw_qpg ? "IBV_DEVICE_QPG " : ""),
|
|
(priv->hw_tss ? "IBV_DEVICE_TSS " : ""),
|
|
(priv->hw_rss ? "IBV_DEVICE_RSS " : ""));
|
|
if (priv->hw_rss)
|
|
DEBUG("maximum RSS indirection table size: %u",
|
|
exp_device_attr.max_rss_tbl_sz);
|
|
#endif /* RSS_SUPPORT */
|
|
|
|
#ifdef INLINE_RECV
|
|
priv->inl_recv_size = mlx4_getenv_int("MLX4_INLINE_RECV_SIZE");
|
|
|
|
if (priv->inl_recv_size) {
|
|
exp_device_attr.comp_mask =
|
|
IBV_EXP_DEVICE_ATTR_INLINE_RECV_SZ;
|
|
if (ibv_exp_query_device(ctx, &exp_device_attr)) {
|
|
INFO("Couldn't query device for inline-receive"
|
|
" capabilities.");
|
|
priv->inl_recv_size = 0;
|
|
} else {
|
|
if ((unsigned)exp_device_attr.inline_recv_sz <
|
|
priv->inl_recv_size) {
|
|
INFO("Max inline-receive (%d) <"
|
|
" requested inline-receive (%u)",
|
|
exp_device_attr.inline_recv_sz,
|
|
priv->inl_recv_size);
|
|
priv->inl_recv_size =
|
|
exp_device_attr.inline_recv_sz;
|
|
}
|
|
}
|
|
INFO("Set inline receive size to %u",
|
|
priv->inl_recv_size);
|
|
}
|
|
#endif /* INLINE_RECV */
|
|
#endif /* HAVE_EXP_QUERY_DEVICE */
|
|
|
|
(void)mlx4_getenv_int;
|
|
priv->vf = vf;
|
|
if (ibv_query_gid(ctx, port, 0, &temp_gid)) {
|
|
ERROR("ibv_query_gid() failure");
|
|
goto port_error;
|
|
}
|
|
/* Configure the first MAC address by default. */
|
|
mac_from_gid(&mac.addr_bytes, port, temp_gid.raw);
|
|
INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
|
|
priv->port,
|
|
mac.addr_bytes[0], mac.addr_bytes[1],
|
|
mac.addr_bytes[2], mac.addr_bytes[3],
|
|
mac.addr_bytes[4], mac.addr_bytes[5]);
|
|
/* Register MAC and broadcast addresses. */
|
|
claim_zero(priv_mac_addr_add(priv, 0,
|
|
(const uint8_t (*)[ETHER_ADDR_LEN])
|
|
mac.addr_bytes));
|
|
claim_zero(priv_mac_addr_add(priv, 1,
|
|
&(const uint8_t [ETHER_ADDR_LEN])
|
|
{ "\xff\xff\xff\xff\xff\xff" }));
|
|
#ifndef NDEBUG
|
|
{
|
|
char ifname[IF_NAMESIZE];
|
|
|
|
if (priv_get_ifname(priv, &ifname) == 0)
|
|
DEBUG("port %u ifname is \"%s\"",
|
|
priv->port, ifname);
|
|
else
|
|
DEBUG("port %u ifname is unknown", priv->port);
|
|
}
|
|
#endif
|
|
/* Get actual MTU if possible. */
|
|
priv_get_mtu(priv, &priv->mtu);
|
|
DEBUG("port %u MTU is %u", priv->port, priv->mtu);
|
|
|
|
/* from rte_ethdev.c */
|
|
{
|
|
char name[RTE_ETH_NAME_MAX_LEN];
|
|
|
|
snprintf(name, sizeof(name), "%s port %u",
|
|
ibv_get_device_name(ibv_dev), port);
|
|
eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
|
|
}
|
|
if (eth_dev == NULL) {
|
|
ERROR("can not allocate rte ethdev");
|
|
err = ENOMEM;
|
|
goto port_error;
|
|
}
|
|
|
|
eth_dev->data->dev_private = priv;
|
|
eth_dev->pci_dev = pci_dev;
|
|
eth_dev->driver = &mlx4_driver;
|
|
eth_dev->data->rx_mbuf_alloc_failed = 0;
|
|
eth_dev->data->mtu = ETHER_MTU;
|
|
|
|
priv->dev = eth_dev;
|
|
eth_dev->dev_ops = &mlx4_dev_ops;
|
|
eth_dev->data->mac_addrs = priv->mac;
|
|
|
|
/* Bring Ethernet device up. */
|
|
DEBUG("forcing Ethernet interface up");
|
|
priv_set_flags(priv, ~IFF_UP, IFF_UP);
|
|
continue;
|
|
|
|
port_error:
|
|
rte_free(priv);
|
|
if (pd)
|
|
claim_zero(ibv_dealloc_pd(pd));
|
|
if (ctx)
|
|
claim_zero(ibv_close_device(ctx));
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* XXX if something went wrong in the loop above, there is a resource
|
|
* leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
|
|
* long as the dpdk does not provide a way to deallocate a ethdev and a
|
|
* way to enumerate the registered ethdevs to free the previous ones.
|
|
*/
|
|
|
|
/* no port found, complain */
|
|
if (!mlx4_dev[idx].ports) {
|
|
err = ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
error:
|
|
if (attr_ctx)
|
|
claim_zero(ibv_close_device(attr_ctx));
|
|
if (list)
|
|
ibv_free_device_list(list);
|
|
assert(err >= 0);
|
|
return -err;
|
|
}
|
|
|
|
static const struct rte_pci_id mlx4_pci_id_map[] = {
|
|
{
|
|
.vendor_id = PCI_VENDOR_ID_MELLANOX,
|
|
.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3,
|
|
.subsystem_vendor_id = PCI_ANY_ID,
|
|
.subsystem_device_id = PCI_ANY_ID
|
|
},
|
|
{
|
|
.vendor_id = PCI_VENDOR_ID_MELLANOX,
|
|
.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO,
|
|
.subsystem_vendor_id = PCI_ANY_ID,
|
|
.subsystem_device_id = PCI_ANY_ID
|
|
},
|
|
{
|
|
.vendor_id = PCI_VENDOR_ID_MELLANOX,
|
|
.device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX3VF,
|
|
.subsystem_vendor_id = PCI_ANY_ID,
|
|
.subsystem_device_id = PCI_ANY_ID
|
|
},
|
|
{
|
|
.vendor_id = 0
|
|
}
|
|
};
|
|
|
|
static struct eth_driver mlx4_driver = {
|
|
.pci_drv = {
|
|
.name = MLX4_DRIVER_NAME,
|
|
.id_table = mlx4_pci_id_map,
|
|
.devinit = mlx4_pci_devinit,
|
|
},
|
|
.dev_private_size = sizeof(struct priv)
|
|
};
|
|
|
|
/**
|
|
* Driver initialization routine.
|
|
*/
|
|
static int
|
|
rte_mlx4_pmd_init(const char *name, const char *args)
|
|
{
|
|
(void)name;
|
|
(void)args;
|
|
/*
|
|
* RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
|
|
* huge pages. Calling ibv_fork_init() during init allows
|
|
* applications to use fork() safely for purposes other than
|
|
* using this PMD, which is not supported in forked processes.
|
|
*/
|
|
setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
|
|
ibv_fork_init();
|
|
rte_eal_pci_register(&mlx4_driver.pci_drv);
|
|
return 0;
|
|
}
|
|
|
|
static struct rte_driver rte_mlx4_driver = {
|
|
.type = PMD_PDEV,
|
|
.name = MLX4_DRIVER_NAME,
|
|
.init = rte_mlx4_pmd_init,
|
|
};
|
|
|
|
PMD_REGISTER_DRIVER(rte_mlx4_driver)
|