X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?p=o-du%2Fphy.git;a=blobdiff_plain;f=fhi_lib%2Flib%2Fethernet%2Fethernet.c;fp=fhi_lib%2Flib%2Fethernet%2Fethernet.c;h=ebf997ca83627982d262e096b780aa7772a7bf75;hp=0000000000000000000000000000000000000000;hb=4745e5c88ba931c6d71cb6d8c681f76cf364eac5;hpb=59f84608ec15c016958a6e0e0ddd813f376c0925 diff --git a/fhi_lib/lib/ethernet/ethernet.c b/fhi_lib/lib/ethernet/ethernet.c new file mode 100644 index 0000000..ebf997c --- /dev/null +++ b/fhi_lib/lib/ethernet/ethernet.c @@ -0,0 +1,357 @@ +/****************************************************************************** +* +* 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 ethernet.c + * @ingroup group_lte_source_auxlib + * @author Intel Corporation + **/ + + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ethernet.h" +#include "ethdi.h" + +/* Our mbuf pools. */ +struct rte_mempool *_eth_mbuf_pool; +struct rte_mempool *_eth_mbuf_pool_rx; +struct rte_mempool *_eth_mbuf_pool_small; +struct rte_mempool *_eth_mbuf_pool_big; + +/* + * Make sure the ring indexes are big enough to cover buf space x2 + * This ring-buffer maintains the property head - tail <= RINGSIZE. + * head == tail: ring buffer empty + * head - tail == RINGSIZE: ring buffer full + */ +typedef uint16_t ring_idx; +static struct { + ring_idx head; + ring_idx read_head; + ring_idx tail; + char buf[1024]; /* needs power of 2! */ +} io_ring = { {0}, 0, 0}; + +#define RINGSIZE sizeof(io_ring.buf) +#define RINGMASK (RINGSIZE - 1) + + +/* + * Display part of the message stored in the ring buffer. + * Might require multiple calls to print the full message. + * Will return 0 when nothing left to print. + */ +int xran_show_delayed_message(void) +{ + ring_idx tail = io_ring.tail; + ring_idx wlen = io_ring.read_head - tail; /* always within [0, RINGSIZE] */ + + if (wlen <= 0) + return 0; + + tail &= RINGMASK; /* modulo the range down now that we have wlen */ + + /* Make sure we're not going over buffer end. Next call will wrap. */ + if (tail + wlen > RINGSIZE) + wlen = RINGSIZE - tail; + + RTE_ASSERT(tail + wlen <= RINGSIZE); + + /* We use write() here to avoid recaculating string length in fwrite(). */ + const ssize_t written = write(STDOUT_FILENO, io_ring.buf + tail, wlen); + if (written <= 0) + return 0; /* To avoid moving tail the wrong way on error. */ + + /* Move tail up. Only we touch it. And we only print from one core. */ + io_ring.tail += written; + + return written; /* next invocation will print the rest if any */ +} + + +void xran_init_mbuf_pool(void) +{ + /* Init the buffer pool */ + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + _eth_mbuf_pool = rte_pktmbuf_pool_create("mempool", NUM_MBUFS, + MBUF_CACHE, 0, MBUF_POOL_ELEMENT, rte_socket_id()); + _eth_mbuf_pool_rx = rte_pktmbuf_pool_create("mempool_rx", NUM_MBUFS, + MBUF_CACHE, 0, MBUF_POOL_ELEMENT, rte_socket_id()); + _eth_mbuf_pool_small = rte_pktmbuf_pool_create("mempool_small", + NUM_MBUFS, MBUF_CACHE, 0, MBUF_POOL_ELM_SMALL, rte_socket_id()); + _eth_mbuf_pool_big = rte_pktmbuf_pool_create("mempool_big", + NUM_MBUFS_BIG, 0, 0, MBUF_POOL_ELM_BIG, rte_socket_id()); + } else { + _eth_mbuf_pool = rte_mempool_lookup("mempool"); + _eth_mbuf_pool_rx = rte_mempool_lookup("mempool_rx"); + _eth_mbuf_pool_small = rte_mempool_lookup("mempool_small"); + _eth_mbuf_pool_big = rte_mempool_lookup("mempool_big"); + } + if (_eth_mbuf_pool == NULL) + rte_panic("Cannot create mbuf pool: %s\n", rte_strerror(rte_errno)); + if (_eth_mbuf_pool_rx == NULL) + rte_panic("Cannot create mbuf pool: %s\n", rte_strerror(rte_errno)); + if (_eth_mbuf_pool_small == NULL) + rte_panic("Cannot create small mbuf pool: %s\n", rte_strerror(rte_errno)); + if (_eth_mbuf_pool_big == NULL) + rte_panic("Cannot create big mbuf pool: %s\n", rte_strerror(rte_errno)); +} + +/* Init NIC port, then start the port */ +void xran_init_port(int p_id, struct ether_addr *p_lls_cu_addr) +{ + char buf[ETHER_ADDR_FMT_SIZE]; + struct ether_addr eth_addr; + struct rte_eth_rxmode rxmode = + { .split_hdr_size = 0, + .max_rx_pkt_len = MAX_RX_LEN, + .offloads=(DEV_RX_OFFLOAD_JUMBO_FRAME|DEV_RX_OFFLOAD_CRC_STRIP) + }; + struct rte_eth_txmode txmode = { + .mq_mode = ETH_MQ_TX_NONE + }; + struct rte_eth_conf port_conf = { + .rxmode = rxmode, + .txmode = txmode + }; + struct ether_addr pDstEthAddr; + + struct rte_eth_rxconf rxq_conf; + struct rte_eth_txconf txq_conf; + + int ret; + struct rte_eth_dev_info dev_info; + const char *drv_name = ""; + int sock_id = rte_eth_dev_socket_id(p_id); + + // ether_format_addr(buf, sizeof(buf), p_lls_cu_addr); + // printf("port %d set mac address %s\n", p_id, buf); + // rte_eth_dev_default_mac_addr_set(p_id, p_lls_cu_addr); + + rte_eth_dev_info_get(p_id, &dev_info); + if (dev_info.driver_name) + drv_name = dev_info.driver_name; + printf("initializing port %d for TX, drv=%s\n", p_id, drv_name); + + /* In order to receive packets from any server need to add broad case address + * for the port*/ + pDstEthAddr.addr_bytes[0] = 0xFF; + pDstEthAddr.addr_bytes[1] = 0xFF; + pDstEthAddr.addr_bytes[2] = 0xFF; + + pDstEthAddr.addr_bytes[3] = 0xFF; + pDstEthAddr.addr_bytes[4] = 0xFF; + pDstEthAddr.addr_bytes[5] = 0xFF; + + rte_eth_macaddr_get(p_id, ð_addr); + ether_format_addr(buf, sizeof(buf), ð_addr); + printf("port %d mac address %s\n", p_id, buf); + + struct ether_addr addr; + rte_eth_macaddr_get(p_id, &addr); + +// rte_eth_dev_mac_addr_add(p_id, &pDstEthAddr,1); + // rte_eth_dev_mac_addr_add(p_id, &addr, 1); + + printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8 + " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n", + (unsigned)p_id, + addr.addr_bytes[0], addr.addr_bytes[1], addr.addr_bytes[2], + addr.addr_bytes[3], addr.addr_bytes[4], addr.addr_bytes[5]); + + /* Init port */ + ret = rte_eth_dev_configure(p_id, 1, 1, &port_conf); + if (ret < 0) + rte_panic("Cannot configure port %u (%d)\n", p_id, ret); + + /* Init RX queues */ + rxq_conf = dev_info.default_rxconf; + ret = rte_eth_rx_queue_setup(p_id, 0, BURST_SIZE, + sock_id, &rxq_conf, _eth_mbuf_pool_rx); + if (ret < 0) + rte_panic("Cannot init RX for port %u (%d)\n", + p_id, ret); + + /* Init TX queues */ + txq_conf = dev_info.default_txconf; + ret = rte_eth_tx_queue_setup(p_id, 0, BURST_SIZE, sock_id, &txq_conf); + if (ret < 0) + rte_panic("Cannot init TX for port %u (%d)\n", + p_id, ret); + + /* Start port */ + ret = rte_eth_dev_start(p_id); + if (ret < 0) + rte_panic("Cannot start port %u (%d)\n", p_id, ret); + + rte_eth_promiscuous_enable(p_id); +} + +void xran_memdump(void *addr, int len) +{ + int i; + char tmp_buf[len * 2 + len / 16 + 1]; + char *p = tmp_buf; + + return; +#if 0 + for (i = 0; i < len; ++i) { + sprintf(p, "%.2X ", ((uint8_t *)addr)[i]); + if (i % 16 == 15) + *p++ = '\n'; + } + *p = 0; + nlog("%s", tmp_buf); +#endif +} + + +/* Prepend ethernet header, possibly vlan tag. */ +void xran_add_eth_hdr_vlan(struct ether_addr *dst, uint16_t ethertype, struct rte_mbuf *mb, uint16_t vlan_tci) +{ + /* add in the ethernet header */ + struct ether_hdr *const h = (void *)rte_pktmbuf_prepend(mb, sizeof(*h)); + + PANIC_ON(h == NULL, "mbuf prepend of ether_hdr failed"); + + /* Fill in the ethernet header. */ + rte_eth_macaddr_get(mb->port, &h->s_addr); /* set source addr */ + h->d_addr = *dst; /* set dst addr */ + h->ether_type = rte_cpu_to_be_16(ethertype); /* ethertype too */ + +#if defined(DPDKIO_DEBUG) && DPDKIO_DEBUG > 1 + { + char dst[ETHER_ADDR_FMT_SIZE] = "(empty)"; + char src[ETHER_ADDR_FMT_SIZE] = "(empty)"; + + nlog("*** packet for TX below (len %d) ***", rte_pktmbuf_pkt_len(mb)); + ether_format_addr(src, sizeof(src), &h->s_addr); + ether_format_addr(dst, sizeof(dst), &h->d_addr); + nlog("src: %s dst: %s ethertype: %.4X", src, dst, ethertype); + } +#endif +#ifdef VLAN_SUPPORT + mb->vlan_tci = vlan_tci; + dlog("Inserting vlan tag of %d", vlan_tci); + rte_vlan_insert(&mb); +#endif +} + +int xran_send_message_burst(int dst_id, int pkt_type, void *body, int len) +{ + struct rte_mbuf *mbufs[BURST_SIZE]; + int i; + uint8_t *src = body; + const struct xran_ethdi_ctx *const ctx = xran_ethdi_get_ctx(); + + /* We're limited by maximum mbuf size on the receive size. + * We can change this but this would be a bigger rework. */ + RTE_ASSERT(len < MBUF_POOL_ELM_BIG); + + /* Allocate the required number of mbufs. */ + const uint8_t count = ceilf((float)len / MAX_DATA_SIZE); + if (rte_pktmbuf_alloc_bulk(_eth_mbuf_pool, mbufs, count) != 0) + rte_panic("Failed to allocate %d mbufs\n", count); + + nlog("burst transfer with data size %lu", MAX_DATA_SIZE); + for (i = 0; len > 0; ++i) { + char *p; + struct burst_hdr *bhdr; + struct ethdi_hdr *edi_hdr; + + /* Setup the ethdi_hdr. */ + edi_hdr = (void *)rte_pktmbuf_append(mbufs[i], sizeof(*edi_hdr)); + if (edi_hdr == NULL) + rte_panic("append of ethdi_hdr failed\n"); + edi_hdr->pkt_type = PKT_BURST; + /* edi_hdr->source_id setup in tx_from_ring */ + edi_hdr->dest_id = dst_id; + + /* Setup the burst header */ + bhdr = (void *)rte_pktmbuf_append(mbufs[i], sizeof(*bhdr)); + if (bhdr == NULL) /* append failed. */ + rte_panic("mbuf prepend of burst_hdr failed\n"); + bhdr->original_type = pkt_type; + bhdr->pkt_idx = i; /* save the index of the burst chunk. */ + bhdr->total_pkts = count; + + /* now copy in the actual data */ + const int curr_data_len = RTE_MIN(len, MAX_TX_LEN - + rte_pktmbuf_pkt_len(mbufs[i]) - sizeof(struct ether_hdr)); + p = (void *)rte_pktmbuf_append(mbufs[i], curr_data_len); + if (p == NULL) + rte_panic("mbuf append of %d data bytes failed\n", curr_data_len); + /* This copy is unavoidable, as we're splitting one big buffer + * into multiple mbufs. */ + rte_memcpy(p, src, curr_data_len); + + dlog("curr_data_len[%d] = %d", i, curr_data_len); + dlog("packet %d size %d", i, rte_pktmbuf_pkt_len(mbufs[i])); + + /* Update our source data pointer and remaining length. */ + len -= curr_data_len; + src += curr_data_len; + } + + /* Now enqueue the full prepared burst. */ + i = rte_ring_enqueue_bulk(ctx->tx_ring[0], (void **)mbufs, count, NULL); + PANIC_ON(i != count, "failed to enqueue all mbufs: %d/%d", i, count); + dlog("%d packets enqueued on port %d.", count, ctx->io_cfg.port); + + return 1; +}