X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=app%2Ftest-pmd%2Ficmpecho.c;h=55d266d77b09c0b02ed3a1509e30b8600dbc52c3;hb=8599ed31f2cfad122f6a2096093193f9793f876c;hp=c5933f4ffda905116f8f8eb067d1dd2e1e36c6f4;hpb=f161fb6ad5125e8286ea6aaa01e8903dacf21161;p=dpdk.git diff --git a/app/test-pmd/icmpecho.c b/app/test-pmd/icmpecho.c index c5933f4ffd..55d266d77b 100644 --- a/app/test-pmd/icmpecho.c +++ b/app/test-pmd/icmpecho.c @@ -1,35 +1,5 @@ -/*- - * BSD LICENSE - * - * Copyright(c) 2013 6WIND - * 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 6WIND S.A. 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. - * +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2013 6WIND S.A. */ #include @@ -52,7 +22,6 @@ #include #include #include -#include #include #include #include @@ -62,6 +31,7 @@ #include #include #include +#include #include "testpmd.h" @@ -200,7 +170,7 @@ ip_proto_name(uint16_t ip_proto) "OSPFIGP", /**< OSPFIGP */ "SRPC", /**< Strite RPC protocol */ - "LARP", /**< Locus Address Resoloution */ + "LARP", /**< Locus Address Resolution */ "MTP", /**< Multicast Transport */ "AX25", /**< AX.25 Frames */ "4IN4", /**< IP encapsulated in IP */ @@ -272,8 +242,32 @@ ipv4_addr_dump(const char *what, uint32_t be_ipv4_addr) printf("%s", buf); } +static uint16_t +ipv4_hdr_cksum(struct ipv4_hdr *ip_h) +{ + uint16_t *v16_h; + uint32_t ip_cksum; + + /* + * Compute the sum of successive 16-bit words of the IPv4 header, + * skipping the checksum field of the header. + */ + v16_h = (unaligned_uint16_t *) ip_h; + ip_cksum = v16_h[0] + v16_h[1] + v16_h[2] + v16_h[3] + + v16_h[4] + v16_h[6] + v16_h[7] + v16_h[8] + v16_h[9]; + + /* reduce 32 bit checksum to 16 bits and complement it */ + ip_cksum = (ip_cksum & 0xffff) + (ip_cksum >> 16); + ip_cksum = (ip_cksum & 0xffff) + (ip_cksum >> 16); + ip_cksum = (~ip_cksum) & 0x0000FFFF; + return (ip_cksum == 0) ? 0xFFFF : (uint16_t) ip_cksum; +} + +#define is_multicast_ipv4_addr(ipv4_addr) \ + (((rte_be_to_cpu_32((ipv4_addr)) >> 24) & 0x000000FF) == 0xE0) + /* - * Receive a burst of packets, lookup for ICMP echo requets, and, if any, + * Receive a burst of packets, lookup for ICMP echo requests, and, if any, * send back ICMP echo replies. */ static void @@ -287,6 +281,7 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) struct ipv4_hdr *ip_h; struct icmp_hdr *icmp_h; struct ether_addr eth_addr; + uint32_t retry; uint32_t ip_addr; uint16_t nb_rx; uint16_t nb_tx; @@ -295,6 +290,7 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) uint16_t vlan_id; uint16_t arp_op; uint16_t arp_pro; + uint32_t cksum; uint8_t i; int l2_len; #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES @@ -321,6 +317,9 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) fs->rx_packets += nb_rx; nb_replies = 0; for (i = 0; i < nb_rx; i++) { + if (likely(i < nb_rx - 1)) + rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1], + void *)); pkt = pkts_burst[i]; eth_h = rte_pktmbuf_mtod(pkt, struct ether_hdr *); eth_type = RTE_BE_TO_CPU_16(eth_h->ether_type); @@ -442,19 +441,47 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) /* * Prepare ICMP echo reply to be sent back. * - switch ethernet source and destinations addresses, - * - switch IPv4 source and destinations addresses, + * - use the request IP source address as the reply IP + * destination address, + * - if the request IP destination address is a multicast + * address: + * - choose a reply IP source address different from the + * request IP source address, + * - re-compute the IP header checksum. + * Otherwise: + * - switch the request IP source and destination + * addresses in the reply IP header, + * - keep the IP header checksum unchanged. * - set IP_ICMP_ECHO_REPLY in ICMP header. - * No need to re-compute the IP header checksum. - * Reset ICMP checksum. + * ICMP checksum is computed by assuming it is valid in the + * echo request and not verified. */ ether_addr_copy(ð_h->s_addr, ð_addr); ether_addr_copy(ð_h->d_addr, ð_h->s_addr); ether_addr_copy(ð_addr, ð_h->d_addr); ip_addr = ip_h->src_addr; - ip_h->src_addr = ip_h->dst_addr; - ip_h->dst_addr = ip_addr; + if (is_multicast_ipv4_addr(ip_h->dst_addr)) { + uint32_t ip_src; + + ip_src = rte_be_to_cpu_32(ip_addr); + if ((ip_src & 0x00000003) == 1) + ip_src = (ip_src & 0xFFFFFFFC) | 0x00000002; + else + ip_src = (ip_src & 0xFFFFFFFC) | 0x00000001; + ip_h->src_addr = rte_cpu_to_be_32(ip_src); + ip_h->dst_addr = ip_addr; + ip_h->hdr_checksum = ipv4_hdr_cksum(ip_h); + } else { + ip_h->src_addr = ip_h->dst_addr; + ip_h->dst_addr = ip_addr; + } icmp_h->icmp_type = IP_ICMP_ECHO_REPLY; - icmp_h->icmp_cksum = 0; + cksum = ~icmp_h->icmp_cksum & 0xffff; + cksum += ~htons(IP_ICMP_ECHO_REQUEST << 8) & 0xffff; + cksum += htons(IP_ICMP_ECHO_REPLY << 8); + cksum = (cksum & 0xffff) + (cksum >> 16); + cksum = (cksum & 0xffff) + (cksum >> 16); + icmp_h->icmp_cksum = ~cksum; pkts_burst[nb_replies++] = pkt; } @@ -462,6 +489,20 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) if (nb_replies > 0) { nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_replies); + /* + * Retry if necessary + */ + if (unlikely(nb_tx < nb_replies) && fs->retry_enabled) { + retry = 0; + while (nb_tx < nb_replies && + retry++ < burst_tx_retry_num) { + rte_delay_us(burst_tx_delay_time); + nb_tx += rte_eth_tx_burst(fs->tx_port, + fs->tx_queue, + &pkts_burst[nb_tx], + nb_replies - nb_tx); + } + } fs->tx_packets += nb_tx; #ifdef RTE_TEST_PMD_RECORD_BURST_STATS fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;