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Diffstat (limited to 'examples/quota_watermark/qw/init.c')
| -rw-r--r-- | examples/quota_watermark/qw/init.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/examples/quota_watermark/qw/init.c b/examples/quota_watermark/qw/init.c new file mode 100644 index 00000000..afc13665 --- /dev/null +++ b/examples/quota_watermark/qw/init.c @@ -0,0 +1,174 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <fcntl.h> +#include <unistd.h> +#include <sys/mman.h> + +#include <rte_eal.h> + +#include <rte_common.h> +#include <rte_errno.h> +#include <rte_ethdev.h> +#include <rte_memzone.h> +#include <rte_ring.h> +#include <rte_string_fns.h> + +#include "args.h" +#include "init.h" +#include "main.h" +#include "../include/conf.h" + + +static const struct rte_eth_conf port_conf = { + .rxmode = { + .split_hdr_size = 0, + .header_split = 0, /**< Header Split disabled */ + .hw_ip_checksum = 0, /**< IP checksum offload disabled */ + .hw_vlan_filter = 0, /**< VLAN filtering disabled */ + .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ + .hw_strip_crc = 0, /**< CRC stripped by hardware */ + }, + .txmode = { + .mq_mode = ETH_DCB_NONE, + }, +}; + +static struct rte_eth_fc_conf fc_conf = { + .mode = RTE_FC_TX_PAUSE, + .high_water = 80 * 510 / 100, + .low_water = 60 * 510 / 100, + .pause_time = 1337, + .send_xon = 0, +}; + + +void configure_eth_port(uint8_t port_id) +{ + int ret; + + rte_eth_dev_stop(port_id); + + ret = rte_eth_dev_configure(port_id, 1, 1, &port_conf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Cannot configure port %u (error %d)\n", + (unsigned) port_id, ret); + + /* Initialize the port's RX queue */ + ret = rte_eth_rx_queue_setup(port_id, 0, RX_DESC_PER_QUEUE, + rte_eth_dev_socket_id(port_id), + NULL, + mbuf_pool); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Failed to setup RX queue on " + "port %u (error %d)\n", (unsigned) port_id, ret); + + /* Initialize the port's TX queue */ + ret = rte_eth_tx_queue_setup(port_id, 0, TX_DESC_PER_QUEUE, + rte_eth_dev_socket_id(port_id), + NULL); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Failed to setup TX queue on " + "port %u (error %d)\n", (unsigned) port_id, ret); + + /* Initialize the port's flow control */ + ret = rte_eth_dev_flow_ctrl_set(port_id, &fc_conf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Failed to setup hardware flow control on " + "port %u (error %d)\n", (unsigned) port_id, ret); + + /* Start the port */ + ret = rte_eth_dev_start(port_id); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Failed to start port %u (error %d)\n", + (unsigned) port_id, ret); + + /* Put it in promiscuous mode */ + rte_eth_promiscuous_enable(port_id); +} + +void +init_dpdk(void) +{ + if (rte_eth_dev_count() < 2) + rte_exit(EXIT_FAILURE, "Not enough ethernet port available\n"); +} + +void init_ring(int lcore_id, uint8_t port_id) +{ + struct rte_ring *ring; + char ring_name[RTE_RING_NAMESIZE]; + + snprintf(ring_name, RTE_RING_NAMESIZE, + "core%d_port%d", lcore_id, port_id); + ring = rte_ring_create(ring_name, RING_SIZE, rte_socket_id(), + RING_F_SP_ENQ | RING_F_SC_DEQ); + + if (ring == NULL) + rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno)); + + rte_ring_set_water_mark(ring, 80 * RING_SIZE / 100); + + rings[lcore_id][port_id] = ring; +} + +void +pair_ports(void) +{ + uint8_t i, j; + + /* Pair ports with their "closest neighbour" in the portmask */ + for (i = 0; i < RTE_MAX_ETHPORTS; i++) + if (is_bit_set(i, portmask)) + for (j = (uint8_t) (i + 1); j < RTE_MAX_ETHPORTS; j++) + if (is_bit_set(j, portmask)) { + port_pairs[i] = j; + port_pairs[j] = i; + i = j; + break; + } +} + +void +setup_shared_variables(void) +{ + const struct rte_memzone *qw_memzone; + + qw_memzone = rte_memzone_reserve(QUOTA_WATERMARK_MEMZONE_NAME, 2 * sizeof(int), + rte_socket_id(), RTE_MEMZONE_2MB); + if (qw_memzone == NULL) + rte_exit(EXIT_FAILURE, "%s\n", rte_strerror(rte_errno)); + + quota = qw_memzone->addr; + low_watermark = (unsigned int *) qw_memzone->addr + sizeof(int); +} |