diff options
Diffstat (limited to 'app/test-pmd/txonly.c')
| -rw-r--r-- | app/test-pmd/txonly.c | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/app/test-pmd/txonly.c b/app/test-pmd/txonly.c new file mode 100644 index 00000000..b37cae57 --- /dev/null +++ b/app/test-pmd/txonly.c @@ -0,0 +1,327 @@ +/*- + * 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 <stdarg.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <stdint.h> +#include <unistd.h> +#include <inttypes.h> + +#include <sys/queue.h> +#include <sys/stat.h> + +#include <rte_common.h> +#include <rte_byteorder.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_cycles.h> +#include <rte_memory.h> +#include <rte_memcpy.h> +#include <rte_memzone.h> +#include <rte_launch.h> +#include <rte_eal.h> +#include <rte_per_lcore.h> +#include <rte_lcore.h> +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_ring.h> +#include <rte_memory.h> +#include <rte_mempool.h> +#include <rte_mbuf.h> +#include <rte_memcpy.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_ip.h> +#include <rte_tcp.h> +#include <rte_udp.h> +#include <rte_string_fns.h> + +#include "testpmd.h" + +#define UDP_SRC_PORT 1024 +#define UDP_DST_PORT 1024 + +#define IP_SRC_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 1) +#define IP_DST_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 2) + +#define IP_DEFTTL 64 /* from RFC 1340. */ +#define IP_VERSION 0x40 +#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */ +#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN) + +static struct ipv4_hdr pkt_ip_hdr; /**< IP header of transmitted packets. */ +static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */ + +static inline struct rte_mbuf * +tx_mbuf_alloc(struct rte_mempool *mp) +{ + struct rte_mbuf *m; + + m = __rte_mbuf_raw_alloc(mp); + __rte_mbuf_sanity_check_raw(m, 0); + return m; +} + +static void +copy_buf_to_pkt_segs(void* buf, unsigned len, struct rte_mbuf *pkt, + unsigned offset) +{ + struct rte_mbuf *seg; + void *seg_buf; + unsigned copy_len; + + seg = pkt; + while (offset >= seg->data_len) { + offset -= seg->data_len; + seg = seg->next; + } + copy_len = seg->data_len - offset; + seg_buf = rte_pktmbuf_mtod_offset(seg, char *, offset); + while (len > copy_len) { + rte_memcpy(seg_buf, buf, (size_t) copy_len); + len -= copy_len; + buf = ((char*) buf + copy_len); + seg = seg->next; + seg_buf = rte_pktmbuf_mtod(seg, char *); + } + rte_memcpy(seg_buf, buf, (size_t) len); +} + +static inline void +copy_buf_to_pkt(void* buf, unsigned len, struct rte_mbuf *pkt, unsigned offset) +{ + if (offset + len <= pkt->data_len) { + rte_memcpy(rte_pktmbuf_mtod_offset(pkt, char *, offset), + buf, (size_t) len); + return; + } + copy_buf_to_pkt_segs(buf, len, pkt, offset); +} + +static void +setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr, + struct udp_hdr *udp_hdr, + uint16_t pkt_data_len) +{ + uint16_t *ptr16; + uint32_t ip_cksum; + uint16_t pkt_len; + + /* + * Initialize UDP header. + */ + pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr)); + udp_hdr->src_port = rte_cpu_to_be_16(UDP_SRC_PORT); + udp_hdr->dst_port = rte_cpu_to_be_16(UDP_DST_PORT); + udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_len); + udp_hdr->dgram_cksum = 0; /* No UDP checksum. */ + + /* + * Initialize IP header. + */ + pkt_len = (uint16_t) (pkt_len + sizeof(struct ipv4_hdr)); + ip_hdr->version_ihl = IP_VHL_DEF; + ip_hdr->type_of_service = 0; + ip_hdr->fragment_offset = 0; + ip_hdr->time_to_live = IP_DEFTTL; + ip_hdr->next_proto_id = IPPROTO_UDP; + ip_hdr->packet_id = 0; + ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_len); + ip_hdr->src_addr = rte_cpu_to_be_32(IP_SRC_ADDR); + ip_hdr->dst_addr = rte_cpu_to_be_32(IP_DST_ADDR); + + /* + * Compute IP header checksum. + */ + ptr16 = (unaligned_uint16_t*) ip_hdr; + ip_cksum = 0; + ip_cksum += ptr16[0]; ip_cksum += ptr16[1]; + ip_cksum += ptr16[2]; ip_cksum += ptr16[3]; + ip_cksum += ptr16[4]; + ip_cksum += ptr16[6]; ip_cksum += ptr16[7]; + ip_cksum += ptr16[8]; ip_cksum += ptr16[9]; + + /* + * Reduce 32 bit checksum to 16 bits and complement it. + */ + ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) + + (ip_cksum & 0x0000FFFF); + if (ip_cksum > 65535) + ip_cksum -= 65535; + ip_cksum = (~ip_cksum) & 0x0000FFFF; + if (ip_cksum == 0) + ip_cksum = 0xFFFF; + ip_hdr->hdr_checksum = (uint16_t) ip_cksum; +} + +/* + * Transmit a burst of multi-segments packets. + */ +static void +pkt_burst_transmit(struct fwd_stream *fs) +{ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + struct rte_port *txp; + struct rte_mbuf *pkt; + struct rte_mbuf *pkt_seg; + struct rte_mempool *mbp; + struct ether_hdr eth_hdr; + uint16_t nb_tx; + uint16_t nb_pkt; + uint16_t vlan_tci, vlan_tci_outer; + uint64_t ol_flags = 0; + uint8_t i; +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + uint64_t start_tsc; + uint64_t end_tsc; + uint64_t core_cycles; +#endif + uint32_t nb_segs, pkt_len; + +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + start_tsc = rte_rdtsc(); +#endif + + mbp = current_fwd_lcore()->mbp; + txp = &ports[fs->tx_port]; + vlan_tci = txp->tx_vlan_id; + vlan_tci_outer = txp->tx_vlan_id_outer; + if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN) + ol_flags = PKT_TX_VLAN_PKT; + if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ) + ol_flags |= PKT_TX_QINQ_PKT; + for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) { + pkt = tx_mbuf_alloc(mbp); + if (pkt == NULL) { + nomore_mbuf: + if (nb_pkt == 0) + return; + break; + } + pkt->data_len = tx_pkt_seg_lengths[0]; + pkt_seg = pkt; + if (tx_pkt_split == TX_PKT_SPLIT_RND) + nb_segs = random() % tx_pkt_nb_segs + 1; + else + nb_segs = tx_pkt_nb_segs; + pkt_len = pkt->data_len; + for (i = 1; i < nb_segs; i++) { + pkt_seg->next = tx_mbuf_alloc(mbp); + if (pkt_seg->next == NULL) { + pkt->nb_segs = i; + rte_pktmbuf_free(pkt); + goto nomore_mbuf; + } + pkt_seg = pkt_seg->next; + pkt_seg->data_len = tx_pkt_seg_lengths[i]; + pkt_len += pkt_seg->data_len; + } + pkt_seg->next = NULL; /* Last segment of packet. */ + + /* + * Initialize Ethernet header. + */ + ether_addr_copy(&peer_eth_addrs[fs->peer_addr],ð_hdr.d_addr); + ether_addr_copy(&ports[fs->tx_port].eth_addr, ð_hdr.s_addr); + eth_hdr.ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4); + + /* + * Copy headers in first packet segment(s). + */ + copy_buf_to_pkt(ð_hdr, sizeof(eth_hdr), pkt, 0); + copy_buf_to_pkt(&pkt_ip_hdr, sizeof(pkt_ip_hdr), pkt, + sizeof(struct ether_hdr)); + copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt, + sizeof(struct ether_hdr) + + sizeof(struct ipv4_hdr)); + + /* + * Complete first mbuf of packet and append it to the + * burst of packets to be transmitted. + */ + pkt->nb_segs = nb_segs; + pkt->pkt_len = pkt_len; + pkt->ol_flags = ol_flags; + pkt->vlan_tci = vlan_tci; + pkt->vlan_tci_outer = vlan_tci_outer; + pkt->l2_len = sizeof(struct ether_hdr); + pkt->l3_len = sizeof(struct ipv4_hdr); + pkts_burst[nb_pkt] = pkt; + } + nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt); + fs->tx_packets += nb_tx; + +#ifdef RTE_TEST_PMD_RECORD_BURST_STATS + fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; +#endif + if (unlikely(nb_tx < nb_pkt)) { + if (verbose_level > 0 && fs->fwd_dropped == 0) + printf("port %d tx_queue %d - drop " + "(nb_pkt:%u - nb_tx:%u)=%u packets\n", + fs->tx_port, fs->tx_queue, + (unsigned) nb_pkt, (unsigned) nb_tx, + (unsigned) (nb_pkt - nb_tx)); + fs->fwd_dropped += (nb_pkt - nb_tx); + do { + rte_pktmbuf_free(pkts_burst[nb_tx]); + } while (++nb_tx < nb_pkt); + } + +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + end_tsc = rte_rdtsc(); + core_cycles = (end_tsc - start_tsc); + fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); +#endif +} + +static void +tx_only_begin(__attribute__((unused)) portid_t pi) +{ + uint16_t pkt_data_len; + + pkt_data_len = (uint16_t) (tx_pkt_length - (sizeof(struct ether_hdr) + + sizeof(struct ipv4_hdr) + + sizeof(struct udp_hdr))); + setup_pkt_udp_ip_headers(&pkt_ip_hdr, &pkt_udp_hdr, pkt_data_len); +} + +struct fwd_engine tx_only_engine = { + .fwd_mode_name = "txonly", + .port_fwd_begin = tx_only_begin, + .port_fwd_end = NULL, + .packet_fwd = pkt_burst_transmit, +}; |