tap_v2: multiple improvements - vpp - Vector Packet Processing

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author	Damjan Marion <damarion@cisco.com>	2017-12-01 13:34:24 +0100
committer	Damjan Marion <dmarion.lists@gmail.com>	2017-12-02 10:11:25 +0000
commit	91c6ef7cae2d20ca17a69003a44090614412c63f (patch)
tree	28a0ae8030e840a0bc8f65e28f9d5bc2868bf39d /src/vppinfra/smp_fifo.h
parent	9fa1581cc40b656b6e00d77479fc2424cd50a126 (diff)

tap_v2: multiple improvements

- add support for assigning tap interface to the bridge - add support for assigning tap interface host side ip4 and ip6 address - host namespace can be specified as PID (pid:12345) or full path to file - automatically bring linux interface up Change-Id: I1cf7c3cad9a740e430cc1b9c2bb0aad0ba4cc8d8 Signed-off-by: Damjan Marion <damarion@cisco.com>

Diffstat (limited to 'src/vppinfra/smp_fifo.h')

0 files changed, 0 insertions, 0 deletions

/* Ido Barnea Cisco Systems, Inc. */ /* Copyright (c) 2016-2016 Cisco Systems, Inc. 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. */ #include <assert.h> #include <netinet/in.h> #include <common/Network/Packet/TcpHeader.h> #include <common/Network/Packet/UdpHeader.h> #include <common/Network/Packet/IcmpHeader.h> #include <common/Network/Packet/IPHeader.h> #include <common/Network/Packet/IPv6Header.h> #include <common/Network/Packet/EthernetHeader.h> #include <common/Network/Packet/Arp.h> #include "rx_check_header.h" #include "pkt_gen.h" // For use in tests char *CTestPktGen::create_test_pkt(uint16_t l3_type, uint16_t l4_proto, uint8_t ttl, uint32_t ip_id, uint16_t flags , uint16_t max_payload, int &pkt_size) { // ASA 2 uint8_t dst_mac[6] = {0x74, 0xa2, 0xe6, 0xd5, 0x39, 0x25}; uint8_t src_mac[6] = {0xa0, 0x36, 0x9f, 0x38, 0xa4, 0x02}; uint8_t vlan_header[4] = {0x0a, 0xbc, 0x00, 0x00}; // we set the type below according to if pkt is ipv4 or 6 uint8_t vlan_header2[4] = {0x0a, 0xbc, 0x88, 0xa8}; uint16_t l2_proto; uint16_t payload_len; // ASA 1 // uint8_t dst_mac[6] = {0xd4, 0x8c, 0xb5, 0xc9, 0x54, 0x2b}; // uint8_t src_mac[6] = {0xa0, 0x36, 0x9f, 0x38, 0xa4, 0x0}; if (flags & DPF_VLAN) { l2_proto = 0x0081; } else { l2_proto = htons(l3_type); } uint8_t ip_header[] = { 0x45,0x02,0x00,0x30, 0x00,0x00,0x40,0x00, 0xff,0x01,0xbd,0x04, 0x10,0x0,0x0,0x1, //SIP 0x30,0x0,0x0,0x1, //DIP // 0x82, 0x0b, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // IP option. change 45 to 48 (header len) if using it. }; uint8_t ipv6_header[] = { 0x60,0x00,0xff,0x30, // traffic class + flow label 0x00,0x00,0x40,0x00, // payload len + next header + hop limit 0x10,0x0,0x0,0x1,0x10,0x0,0x0,0x1,0x10,0x0,0x0,0x1,0x10,0x0,0x0,0x1, //SIP 0x30,0x0,0x0,0x1,0x10,0x0,0x0,0x1,0x30,0x0,0x0,0x1,0x10,0x0,0x0,0x1, //DIP }; uint8_t udp_header[] = {0x11, 0x11, 0x11,0x11, 0x00, 0x6d, 0x00, 0x00}; uint8_t udp_data[] = {0x64,0x31,0x3a,0x61, 0x64,0x32,0x3a,0x69,0x64, 0x32,0x30,0x3a,0xd0,0x0e, 0xa1,0x4b,0x7b,0xbd,0xbd, 0x16,0xc6,0xdb,0xc4,0xbb,0x43, 0xf9,0x4b,0x51,0x68,0x33,0x72, 0x20,0x39,0x3a,0x69,0x6e,0x66,0x6f, 0x5f,0x68,0x61,0x73,0x68,0x32,0x30,0x3a,0xee,0xc6,0xa3, 0xd3,0x13,0xa8,0x43,0x06,0x03,0xd8,0x9e,0x3f,0x67,0x6f, 0xe7,0x0a,0xfd,0x18,0x13,0x8d,0x65,0x31,0x3a,0x71,0x39, 0x3a,0x67,0x65,0x74,0x5f,0x70,0x65,0x65,0x72,0x73,0x31, 0x3a,0x74,0x38,0x3a,0x3d,0xeb,0x0c,0xbf,0x0d,0x6a,0x0d, 0xa5,0x31,0x3a,0x79,0x31,0x3a,0x71,0x65,0x87,0xa6,0x7d, 0xe7 }; uint8_t tcp_header[] = {0xab, 0xcd, 0x00, 0x80, // src, dst ports 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, // seq num, ack num 0x50, 0x00, 0xff, 0xff, // Header size, flags, window size 0x00, 0x00, 0x00, 0x00, // checksum ,urgent pointer }; uint8_t tcp_data[] = {0x8, 0xa, 0x1, 0x2, 0x3, 0x4, 0x3, 0x4, 0x6, 0x5, 0x8, 0xa, 0x1, 0x2, 0x3, 0x4, 0x3, 0x4, 0x6, 0x5}; uint8_t icmp_header[] = { 0x08, 0x00, 0xb8, 0x21, //checksum 0xaa, 0xbb, // id 0x00, 0x01, // Sequence number }; uint8_t icmp_data[] = { 0xd6, 0x6e, 0x64, 0x34, // magic 0x6a, 0xad, 0x0f, 0x00, //64 bit counter 0x00, 0x56, 0x34, 0x12, 0x78, 0x56, 0x34, 0x12, 0x00, 0x00 // seq }; pkt_size = 14; if (flags & DPF_VLAN) { pkt_size += 4; if (flags & DPF_QINQ) { pkt_size += 4; } } switch(l3_type) { case EthernetHeader::Protocol::IP: pkt_size += sizeof(ip_header); break; case EthernetHeader::Protocol::IPv6: pkt_size += sizeof(ipv6_header); if (flags & DPF_RXCHECK) { pkt_size += sizeof(struct CRx_check_header); } break; } switch (l4_proto) { case IPPROTO_ICMP: pkt_size += sizeof(icmp_header); payload_len = (max_payload < sizeof(icmp_data)) ? max_payload:sizeof(icmp_data); pkt_size += payload_len; break; case IPPROTO_UDP: pkt_size += sizeof(udp_header); payload_len = (max_payload < sizeof(udp_data)) ? max_payload:sizeof(udp_data); pkt_size += payload_len; break; case IPPROTO_TCP: pkt_size += sizeof(tcp_header); payload_len = (max_payload < sizeof(tcp_data)) ? max_payload:sizeof(tcp_data); pkt_size += payload_len; break; default: payload_len = (max_payload < sizeof(udp_data)) ? max_payload:sizeof(udp_data); pkt_size += payload_len; break; } char *p_start = (char *)malloc(pkt_size); assert(p_start); char *p = p_start; /* set pkt data */ memcpy(p, dst_mac, sizeof(dst_mac)); p += sizeof(dst_mac); memcpy(p, src_mac, sizeof(src_mac)); p += sizeof(src_mac); memcpy(p, &l2_proto, sizeof(l2_proto)); p += sizeof(l2_proto); if (flags & DPF_VLAN) { if (flags & DPF_QINQ) { memcpy(p, &vlan_header2, sizeof(vlan_header2)); p += sizeof(vlan_header2); } uint16_t l3_type_htons = htons(l3_type); memcpy(&vlan_header[2], &l3_type_htons, sizeof(l3_type)); memcpy(p, &vlan_header, sizeof(vlan_header)); p += sizeof(vlan_header); } struct IPHeader *ip = (IPHeader *)p; struct IPv6Header *ipv6 = (IPv6Header *)p; switch(l3_type) { case EthernetHeader::Protocol::IP: memcpy(p, ip_header, sizeof(ip_header)); p += sizeof(ip_header); ip->setProtocol(l4_proto); ip->setTotalLength(pkt_size - 14); ip->setId(ip_id); break; case EthernetHeader::Protocol::IPv6: memcpy(p, ipv6_header, sizeof(ipv6_header)); p += sizeof(ipv6_header); if (flags & DPF_RXCHECK) { // rx check header ipv6->setNextHdr(RX_CHECK_V6_OPT_TYPE); if (flags & DPF_RXCHECK) { struct CRx_check_header *rxch = (struct CRx_check_header *)p; p += sizeof(CRx_check_header); rxch->m_option_type = l4_proto; rxch->m_option_len = RX_CHECK_V6_OPT_LEN; } } else { ipv6->setNextHdr(l4_proto); } ipv6->setPayloadLen(pkt_size - 14 - sizeof(ipv6_header)); ipv6->setFlowLabel(ip_id); break; } struct TCPHeader *tcp = (TCPHeader *)p; struct ICMPHeader *icmp= (ICMPHeader *)p; switch (l4_proto) { case IPPROTO_ICMP: memcpy(p, icmp_header, sizeof(icmp_header)); p += sizeof(icmp_header); memcpy(p, icmp_data, payload_len); p += payload_len; icmp->updateCheckSum(sizeof(icmp_header) + sizeof(icmp_data)); break; case IPPROTO_UDP: memcpy(p, udp_header, sizeof(udp_header)); p += sizeof(udp_header); memcpy(p, udp_data, payload_len); p += payload_len; break; case IPPROTO_TCP: memcpy(p, tcp_header, sizeof(tcp_header)); p += sizeof(tcp_header); memcpy(p, tcp_data, payload_len); p += payload_len; tcp->setSynFlag(false); // printf("Sending TCP header:"); //tcp->dump(stdout); break; default: memcpy(p, udp_data, payload_len); p += payload_len; break; } switch(l3_type) { case EthernetHeader::Protocol::IP: ip->setTimeToLive(ttl); ip->updateCheckSum(); break; case EthernetHeader::Protocol::IPv6: ipv6->setHopLimit(ttl); break; } return p_start; } /* * Create ARP request packet * Parameters: * pkt - Buffer to fill the packet in. Size should be big enough to contain the packet (60 is a good value). * sip - Our source IP * tip - Target IP for which we need resolution (In case of gratuitous ARP, should be equal sip). * src_mac - Our source MAC * vlan - VLAN tag to send the packet on. If set to 0, no vlan will be sent. * port - Port we intended to send packet on. This is needed since we put some "magic" number with the port, so * we can identify if we are connected in loopback, which ports are connected. */ void CTestPktGen::create_arp_req(uint8_t *pkt, uint32_t sip, uint32_t tip, uint8_t *src_mac, uint16_t vlan , uint16_t port) { uint16_t l2_proto = htons(EthernetHeader::Protocol::ARP); // dst MAC memset(pkt, 0xff, ETHER_ADDR_LEN); pkt += ETHER_ADDR_LEN; // src MAC memcpy(pkt, src_mac, ETHER_ADDR_LEN); pkt += ETHER_ADDR_LEN; if (vlan != 0) { uint16_t htons_vlan = htons(vlan); uint16_t vlan_proto = htons(0x8100); memcpy(pkt, &vlan_proto, sizeof(vlan_proto)); pkt += 2; memcpy(pkt, &htons_vlan, sizeof(uint16_t)); pkt += 2; } // l3 type memcpy(pkt, &l2_proto, sizeof(l2_proto)); pkt += 2; ArpHdr *arp = (ArpHdr *)pkt; arp->m_arp_hrd = htons(ArpHdr::ARP_HDR_HRD_ETHER); // Format of hardware address arp->m_arp_pro = htons(EthernetHeader::Protocol::IP); // Format of protocol address arp->m_arp_hln = ETHER_ADDR_LEN; // Length of hardware address arp->m_arp_pln = 4; // Length of protocol address arp->m_arp_op = htons(ArpHdr::ARP_HDR_OP_REQUEST); // ARP opcode (command) memcpy(&arp->m_arp_sha.data, src_mac, ETHER_ADDR_LEN); // Sender MAC address arp->m_arp_sip = htonl(sip); // Sender IP address uint8_t magic[5] = {0x1, 0x3, 0x5, 0x7, 0x9}; memcpy(&arp->m_arp_tha.data, magic, 5); // Target MAC address arp->m_arp_tha.data[5] = port; arp->m_arp_tip = htonl(tip); }


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