X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=app%2Ftest-pmd%2Ficmpecho.c;h=e510f9bf37ff95c550b56417512be73cba6320ba;hb=7621d6a8d0bdb39b58ee7c4176a0f2e920b8113d;hp=774924e072ed7f5d7bba8cc53550b2deeb86b3b5;hpb=ec3d82db2dc13d3b96b7d97801d85dcbaaa1d1cb;p=dpdk.git diff --git a/app/test-pmd/icmpecho.c b/app/test-pmd/icmpecho.c index 774924e072..e510f9bf37 100644 --- a/app/test-pmd/icmpecho.c +++ b/app/test-pmd/icmpecho.c @@ -88,7 +88,7 @@ arp_op_name(uint16_t arp_op) } static const char * -ip_proto_name(uint8_t ip_proto) +ip_proto_name(uint16_t ip_proto) { static const char * ip_proto_names[] = { "IP6HOPOPTS", /**< IP6 hop-by-hop options */ @@ -221,12 +221,16 @@ ip_proto_name(uint8_t ip_proto) if (ip_proto < sizeof(ip_proto_names) / sizeof(ip_proto_names[0])) return ip_proto_names[ip_proto]; switch (ip_proto) { +#ifdef IPPROTO_PGM case IPPROTO_PGM: /**< PGM */ return "PGM"; +#endif case IPPROTO_SCTP: /**< Stream Control Transport Protocol */ return "SCTP"; +#ifdef IPPROTO_DIVERT case IPPROTO_DIVERT: /**< divert pseudo-protocol */ return "DIVERT"; +#endif case IPPROTO_RAW: /**< raw IP packet */ return "RAW"; default: @@ -268,6 +272,30 @@ 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, * send back ICMP echo replies. @@ -291,6 +319,7 @@ 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 @@ -367,18 +396,14 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) continue; } if (verbose_level > 0) { - memcpy(ð_addr, - arp_h->arp_data.arp_ip.arp_sha, 6); + ether_addr_copy(&arp_h->arp_data.arp_sha, ð_addr); ether_addr_dump(" sha=", ð_addr); - memcpy(&ip_addr, - arp_h->arp_data.arp_ip.arp_sip, 4); + ip_addr = arp_h->arp_data.arp_sip; ipv4_addr_dump(" sip=", ip_addr); printf("\n"); - memcpy(ð_addr, - arp_h->arp_data.arp_ip.arp_tha, 6); + ether_addr_copy(&arp_h->arp_data.arp_tha, ð_addr); ether_addr_dump(" tha=", ð_addr); - memcpy(&ip_addr, - arp_h->arp_data.arp_ip.arp_tip, 4); + ip_addr = arp_h->arp_data.arp_tip; ipv4_addr_dump(" tip=", ip_addr); printf("\n"); } @@ -398,17 +423,14 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs) ð_h->s_addr); arp_h->arp_op = rte_cpu_to_be_16(ARP_OP_REPLY); - memcpy(ð_addr, arp_h->arp_data.arp_ip.arp_tha, 6); - memcpy(arp_h->arp_data.arp_ip.arp_tha, - arp_h->arp_data.arp_ip.arp_sha, 6); - memcpy(arp_h->arp_data.arp_ip.arp_sha, - ð_h->s_addr, 6); + ether_addr_copy(&arp_h->arp_data.arp_tha, ð_addr); + ether_addr_copy(&arp_h->arp_data.arp_sha, &arp_h->arp_data.arp_tha); + ether_addr_copy(ð_h->s_addr, &arp_h->arp_data.arp_sha); /* Swap IP addresses in ARP payload */ - memcpy(&ip_addr, arp_h->arp_data.arp_ip.arp_sip, 4); - memcpy(arp_h->arp_data.arp_ip.arp_sip, - arp_h->arp_data.arp_ip.arp_tip, 4); - memcpy(arp_h->arp_data.arp_ip.arp_tip, &ip_addr, 4); + ip_addr = arp_h->arp_data.arp_sip; + arp_h->arp_data.arp_sip = arp_h->arp_data.arp_tip; + arp_h->arp_data.arp_tip = ip_addr; pkts_burst[nb_replies++] = pkt; continue; } @@ -445,19 +467,47 @@ 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; }