X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=o-du%2Fphy.git;a=blobdiff_plain;f=fhi_lib%2Flib%2Fethernet%2Fethdi.c;fp=fhi_lib%2Flib%2Fethernet%2Fethdi.c;h=3664ecc48ea4a5f9a9adc2d8ccc9565ca692a31b;hp=0000000000000000000000000000000000000000;hb=4745e5c88ba931c6d71cb6d8c681f76cf364eac5;hpb=59f84608ec15c016958a6e0e0ddd813f376c0925

diff --git a/fhi_lib/lib/ethernet/ethdi.c b/fhi_lib/lib/ethernet/ethdi.c
new file mode 100644
index 0000000..3664ecc
--- /dev/null
+++ b/fhi_lib/lib/ethernet/ethdi.c
@@ -0,0 +1,376 @@
+/******************************************************************************
+*
+*   Copyright (c) 2019 Intel.
+*
+*   Licensed under the Apache License, Version 2.0 (the "License");
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the License at
+*
+*       http://www.apache.org/licenses/LICENSE-2.0
+*
+*   Unless required by applicable law or agreed to in writing, software
+*   distributed under the License is distributed on an "AS IS" BASIS,
+*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*   See the License for the specific language governing permissions and
+*   limitations under the License.
+*
+*******************************************************************************/
+
+
+/**
+ * @brief This file has all definitions for the Ethernet Data Interface Layer
+ * @file ethdi.c
+ * @ingroup group_lte_source_auxlib
+ * @author Intel Corporation
+ **/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <errno.h>
+#include <sys/queue.h>
+#include <err.h>
+#include <assert.h>
+#include <linux/limits.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <rte_config.h>
+#include <rte_common.h>
+#include <rte_log.h>
+#include <rte_memory.h>
+#include <rte_memcpy.h>
+#include <rte_memzone.h>
+#include <rte_eal.h>
+#include <rte_per_lcore.h>
+#include <rte_launch.h>
+#include <rte_atomic.h>
+#include <rte_cycles.h>
+#include <rte_prefetch.h>
+#include <rte_lcore.h>
+#include <rte_per_lcore.h>
+#include <rte_branch_prediction.h>
+#include <rte_interrupts.h>
+#include <rte_pci.h>
+#include <rte_debug.h>
+#include <rte_ethdev.h>
+#include <rte_ring.h>
+#include <rte_mbuf.h>
+#include <rte_timer.h>
+
+#include "ethernet.h"
+#include "ethdi.h"
+#ifndef MLOG_ENABLED
+#include "../src/mlog_lnx_xRAN.h"
+#else
+#include "mlog_lnx.h"
+#endif
+
+#include "../src/xran_lib_mlog_tasks_id.h"
+
+struct xran_ethdi_ctx g_ethdi_ctx = { 0 };
+enum xran_if_state xran_if_current_state = XRAN_STOPPED;
+
+struct rte_mbuf *xran_ethdi_mbuf_alloc(void)
+{
+    return rte_pktmbuf_alloc(_eth_mbuf_pool);
+}
+
+int xran_ethdi_mbuf_send(struct rte_mbuf *mb, uint16_t ethertype)
+{
+    struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
+    int res = 0;
+
+    mb->port = ctx->io_cfg.port[ETHDI_UP_VF];
+    xran_add_eth_hdr_vlan(&ctx->entities[ID_RU], ethertype, mb, ctx->up_vtag);
+
+    res = xran_enqueue_mbuf(mb, ctx->tx_ring[ETHDI_UP_VF]);
+    return res;
+}
+
+int xran_ethdi_mbuf_send_cp(struct rte_mbuf *mb, uint16_t ethertype)
+{
+    struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
+    int res = 0;
+
+    mb->port = ctx->io_cfg.port[ETHDI_CP_VF];
+    xran_add_eth_hdr_vlan(&ctx->entities[ID_RU], ethertype, mb, ctx->cp_vtag);
+
+    res = xran_enqueue_mbuf(mb, ctx->tx_ring[ETHDI_CP_VF]);
+    return res;
+}
+
+void xran_ethdi_stop_tx()
+{
+    struct xran_ethdi_ctx *const ctx = xran_ethdi_get_ctx();
+    rte_timer_stop_sync(&ctx->timer_tx);
+}
+
+
+struct {
+    uint16_t ethertype;
+    ethertype_handler fn;
+} xran_ethertype_handlers[] = {
+    { ETHER_TYPE_ETHDI, NULL },
+    { ETHER_TYPE_ECPRI, NULL },
+    { ETHER_TYPE_START_TX, NULL }
+};
+
+
+
+int xran_register_ethertype_handler(uint16_t ethertype, ethertype_handler callback)
+{
+    int i;
+
+    for (i = 0; i < RTE_DIM(xran_ethertype_handlers); ++i)
+        if (xran_ethertype_handlers[i].ethertype == ethertype) {
+            xran_ethertype_handlers[i].fn = callback;
+
+            return 1;
+        }
+
+    elog("support for ethertype %u not found", ethertype);
+
+    return 0;
+}
+
+int xran_handle_ether(uint16_t ethertype, struct rte_mbuf *pkt, uint64_t rx_time)
+{
+    int i;
+
+    for (i = 0; i < RTE_DIM(xran_ethertype_handlers); ++i)
+        if (xran_ethertype_handlers[i].ethertype == ethertype)
+            if (xran_ethertype_handlers[i].fn)
+                return xran_ethertype_handlers[i].fn(pkt, rx_time);
+
+    wlog("Packet with unrecognized ethertype '%.4X' dropped", ethertype);
+
+    return 0;
+};
+
+
+/* Process vlan tag. Cut the ethernet header. Call the etherype handlers. */
+int xran_ethdi_filter_packet(struct rte_mbuf *pkt, uint64_t rx_time)
+{
+    struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
+
+#ifdef VLAN_SUPPORT
+    if (rte_vlan_strip(pkt) == 0) {
+        if (pkt->vlan_tci == ctx->cp_vtag) {
+            dlog("VLAN tci matches %d", pkt->vlan_tci);
+        } else {
+            wlog("packet with wrong VLAN tag %d, dropping",
+                    pkt->vlan_tci);
+            return 0;
+        }
+    } else
+        dlog("Packet not vlan tagged");
+#endif
+
+    const struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(pkt, void *);
+
+#if defined(DPDKIO_DEBUG) && DPDKIO_DEBUG > 1
+    nlog("*** processing RX'ed packet of size %d ***",
+            rte_pktmbuf_data_len(pkt));
+    /* TODO: just dump ethernet header in readable format? */
+#endif
+
+#if defined(DPDKIO_DEBUG) && DPDKIO_DEBUG > 1
+    {
+        char dst[ETHER_ADDR_FMT_SIZE] = "(empty)";
+        char src[ETHER_ADDR_FMT_SIZE] = "(empty)";
+
+        ether_format_addr(dst, sizeof(dst), &eth_hdr->d_addr);
+        ether_format_addr(src, sizeof(src), &eth_hdr->s_addr);
+        nlog("src: %s dst: %s ethertype: %.4X", dst, src,
+                rte_be_to_cpu_16(eth_hdr->ether_type));
+    }
+#endif
+
+    /* Cut out the ethernet header. It's not needed anymore. */
+    if (rte_pktmbuf_adj(pkt, sizeof(*eth_hdr)) == NULL) {
+        wlog("Packet too short, dropping");
+        return 0;
+    }
+
+
+    return xran_handle_ether(rte_be_to_cpu_16(eth_hdr->ether_type), pkt, rx_time);
+}
+
+
+
+
+int xran_ethdi_init_dpdk_io(char *name, const struct xran_io_loop_cfg *io_cfg,
+    int *lcore_id, struct ether_addr *p_lls_cu_addr, struct ether_addr *p_ru_addr,
+    uint16_t cp_vlan, uint16_t up_vlan)
+{
+    uint16_t port[2] = {0, 0};
+    struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
+    int i;
+    char core_mask[20];
+    char *argv[] = { name, core_mask, "-m3072", "--proc-type=auto",
+        "--file-prefix", name, "-w", "0000:00:00.0" };
+
+    if (io_cfg == NULL)
+        return 0;
+
+    snprintf(core_mask, sizeof(core_mask), "-c%x",
+            (1 << io_cfg->core) |
+            (1 << io_cfg->system_core) |
+            (1 << io_cfg->pkt_proc_core) |
+            (1 << io_cfg->pkt_aux_core) |
+            (1 << io_cfg->timing_core));
+
+    ctx->io_cfg = *io_cfg;
+    ctx->ping_state           = PING_IDLE;
+    ctx->known_peers          = 1;
+    ctx->busy_poll_till = rte_rdtsc();
+    ctx->cp_vtag = cp_vlan;
+    ctx->up_vtag = up_vlan;
+
+    for (i = 0; i <= ID_BROADCAST; i++)     /* Initialize all as broadcast */
+        memset(&ctx->entities[i], 0xFF, sizeof(ctx->entities[0]));
+
+    /* This will return on system_core, which is not necessarily the
+     * one we're on right now. */
+    if (rte_eal_init(RTE_DIM(argv), argv) < 0)
+        rte_panic("Cannot init EAL: %s\n", rte_strerror(rte_errno));
+
+    xran_init_mbuf_pool();
+
+    /* Timers. */
+    rte_timer_subsystem_init();
+    rte_timer_init(&ctx->timer_ping);
+    rte_timer_init(&ctx->timer_sync);
+    rte_timer_init(&ctx->timer_tx);
+
+    *lcore_id = rte_get_next_lcore(rte_lcore_id(), 0, 0);
+
+    PANIC_ON(*lcore_id == RTE_MAX_LCORE, "out of lcores for io_loop()");
+
+    if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+        for (i = 0; i < ETHDI_VF_MAX; i ++){
+            if (rte_eth_dev_attach(io_cfg->dpdk_dev[i], &port[i]) != 0 ||
+                rte_eth_dev_count_avail() == 0)
+                errx(1, "Network port doesn't exist.");
+            xran_init_port(port[i], p_lls_cu_addr);   /* we only have 1 port at this stage */
+            if(i==0){
+                ctx->tx_ring[i] = rte_ring_create("tx_ring_up", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+                ctx->rx_ring[i] = rte_ring_create("rx_ring_up", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+                ctx->pkt_dump_ring[i] = rte_ring_create("pkt_dump_ring_up", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+            }else {
+                ctx->tx_ring[i] = rte_ring_create("tx_ring_cp", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+                ctx->rx_ring[i] = rte_ring_create("rx_ring_cp", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+                ctx->pkt_dump_ring[i] = rte_ring_create("pkt_dump_ring_cp", NUM_MBUFS,
+                    rte_lcore_to_socket_id(*lcore_id), RING_F_SC_DEQ);
+            }
+        }
+    } else {
+        rte_panic("ethdi_dpdk_io_loop() failed to start  with RTE_PROC_SECONDARY\n");
+    }
+    PANIC_ON(ctx->tx_ring == NULL, "failed to allocate tx ring");
+    PANIC_ON(ctx->rx_ring == NULL, "failed to allocate rx ring");
+    PANIC_ON(ctx->pkt_dump_ring == NULL, "failed to allocate pkt dumping ring");
+    for (i = 0; i < ETHDI_VF_MAX; i++)
+        ctx->io_cfg.port[i] = port[i];
+
+    rte_eth_macaddr_get(port[ETHDI_UP_VF], &ctx->entities[io_cfg->id]);
+    ether_addr_copy(p_ru_addr,  &ctx->entities[ID_RU]);
+
+    /* Start the actual IO thread */
+    if (rte_eal_remote_launch(xran_ethdi_dpdk_io_loop, &ctx->io_cfg, *lcore_id))
+        rte_panic("ethdi_dpdk_io_loop() failed to start\n");
+
+    return 1;
+}
+
+static inline uint16_t xran_tx_from_ring(int port, struct rte_ring *r)
+{
+    struct rte_mbuf *mbufs[BURST_SIZE];
+    uint16_t dequeued, sent = 0;
+    uint32_t remaining;
+    int i;
+    long t1 = MLogTick();
+
+    dequeued = rte_ring_dequeue_burst(r, (void **)mbufs, BURST_SIZE,
+            &remaining);
+    if (!dequeued)
+        return 0;   /* Nothing to send. */
+
+    while (1) {     /* When tx queue is full it is trying again till succeed */
+        t1 = MLogTick();
+        sent += rte_eth_tx_burst(port, 0, &mbufs[sent], dequeued - sent);
+        MLogTask(PID_RADIO_ETH_TX_BURST, t1, MLogTick());
+
+        if (sent == dequeued)
+            return remaining;
+    }
+}
+
+
+
+/*
+ * This is the main DPDK-IO loop.
+ * This will sleep if there's no packets incoming and there's
+ * no work enqueued, sleep lenth is defined in IDLE_SLEEP_MICROSECS
+ */
+int xran_ethdi_dpdk_io_loop(void *io_loop_cfg)
+{
+    struct xran_ethdi_ctx *ctx = xran_ethdi_get_ctx();
+    const struct xran_io_loop_cfg *const cfg = io_loop_cfg;
+    const int port[ETHDI_VF_MAX] = {cfg->port[ETHDI_UP_VF], cfg->port[ETHDI_CP_VF]};
+    int port_id = 0;
+    struct sched_param sched_param;
+    int res = 0;
+
+    printf("%s [PORT: %d %d] [CPU %2d] [PID: %6d]\n", __FUNCTION__, port[ETHDI_UP_VF], port[ETHDI_CP_VF] , rte_lcore_id(), getpid());
+
+    printf("%s [CPU %2d] [PID: %6d]\n", __FUNCTION__,  rte_lcore_id(), getpid());
+    sched_param.sched_priority = XRAN_THREAD_DEFAULT_PRIO;
+    if ((res = pthread_setschedparam(pthread_self(), SCHED_FIFO, &sched_param)))
+    {
+        printf("priority is not changed: coreId = %d, result1 = %d\n",rte_lcore_id(), res);
+    }
+
+    for (;;) {
+        for (port_id = 0; port_id < ETHDI_VF_MAX; port_id++){
+            struct rte_mbuf *mbufs[BURST_SIZE];
+            /* RX */
+            const uint16_t rxed = rte_eth_rx_burst(port[port_id], 0, mbufs, BURST_SIZE);
+            if (rxed != 0){
+                long t1 = MLogTick();
+                rte_ring_enqueue_burst(ctx->rx_ring[port_id], (void*)mbufs, rxed, NULL);
+                MLogTask(PID_RADIO_RX_VALIDATE, t1, MLogTick());
+            }
+
+            /* TX */
+            const uint16_t sent = xran_tx_from_ring(port[port_id], ctx->tx_ring[port_id]);
+            if (rxed | sent)
+                continue;   /* more packets might be waiting in queues */
+
+            rte_pause();    /* short pause, optimize memory access */
+            if (XRAN_STOPPED == xran_if_current_state)
+                break;
+        }
+
+        if (XRAN_STOPPED == xran_if_current_state)
+                break;
+    }
+
+    fflush(stderr);
+    fflush(stdout);
+    puts("IO loop finished");
+
+    //for (port_id = 0; port_id < ETHDI_VF_MAX; port_id++)
+      //  xran_ethdi_port_stats(port[port_id]);
+
+    return 0;
+}