mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 16:38:12 +00:00
cdd7b40642
Remove duplicated include. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
780 lines
18 KiB
C
780 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Inject packets with all sorts of encapsulation into the kernel.
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*
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* IPv4/IPv6 outer layer 3
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* GRE/GUE/BARE outer layer 4, where bare is IPIP/SIT/IPv4-in-IPv6/..
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* IPv4/IPv6 inner layer 3
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*/
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#define _GNU_SOURCE
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#include <stddef.h>
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#include <arpa/inet.h>
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#include <asm/byteorder.h>
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#include <error.h>
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#include <errno.h>
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#include <linux/if_packet.h>
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#include <linux/if_ether.h>
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#include <linux/ipv6.h>
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#include <netinet/ip.h>
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#include <netinet/in.h>
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#include <netinet/udp.h>
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#include <poll.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#define CFG_PORT_INNER 8000
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/* Add some protocol definitions that do not exist in userspace */
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struct grehdr {
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uint16_t unused;
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uint16_t protocol;
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} __attribute__((packed));
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struct guehdr {
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union {
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struct {
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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__u8 hlen:5,
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control:1,
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version:2;
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#elif defined (__BIG_ENDIAN_BITFIELD)
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__u8 version:2,
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control:1,
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hlen:5;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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__u8 proto_ctype;
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__be16 flags;
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};
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__be32 word;
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};
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};
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static uint8_t cfg_dsfield_inner;
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static uint8_t cfg_dsfield_outer;
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static uint8_t cfg_encap_proto;
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static bool cfg_expect_failure = false;
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static int cfg_l3_extra = AF_UNSPEC; /* optional SIT prefix */
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static int cfg_l3_inner = AF_UNSPEC;
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static int cfg_l3_outer = AF_UNSPEC;
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static int cfg_num_pkt = 10;
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static int cfg_num_secs = 0;
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static char cfg_payload_char = 'a';
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static int cfg_payload_len = 100;
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static int cfg_port_gue = 6080;
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static bool cfg_only_rx;
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static bool cfg_only_tx;
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static int cfg_src_port = 9;
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static char buf[ETH_DATA_LEN];
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#define INIT_ADDR4(name, addr4, port) \
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static struct sockaddr_in name = { \
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.sin_family = AF_INET, \
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.sin_port = __constant_htons(port), \
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.sin_addr.s_addr = __constant_htonl(addr4), \
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};
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#define INIT_ADDR6(name, addr6, port) \
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static struct sockaddr_in6 name = { \
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.sin6_family = AF_INET6, \
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.sin6_port = __constant_htons(port), \
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.sin6_addr = addr6, \
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};
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INIT_ADDR4(in_daddr4, INADDR_LOOPBACK, CFG_PORT_INNER)
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INIT_ADDR4(in_saddr4, INADDR_LOOPBACK + 2, 0)
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INIT_ADDR4(out_daddr4, INADDR_LOOPBACK, 0)
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INIT_ADDR4(out_saddr4, INADDR_LOOPBACK + 1, 0)
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INIT_ADDR4(extra_daddr4, INADDR_LOOPBACK, 0)
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INIT_ADDR4(extra_saddr4, INADDR_LOOPBACK + 1, 0)
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INIT_ADDR6(in_daddr6, IN6ADDR_LOOPBACK_INIT, CFG_PORT_INNER)
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INIT_ADDR6(in_saddr6, IN6ADDR_LOOPBACK_INIT, 0)
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INIT_ADDR6(out_daddr6, IN6ADDR_LOOPBACK_INIT, 0)
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INIT_ADDR6(out_saddr6, IN6ADDR_LOOPBACK_INIT, 0)
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INIT_ADDR6(extra_daddr6, IN6ADDR_LOOPBACK_INIT, 0)
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INIT_ADDR6(extra_saddr6, IN6ADDR_LOOPBACK_INIT, 0)
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static unsigned long util_gettime(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
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}
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static void util_printaddr(const char *msg, struct sockaddr *addr)
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{
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unsigned long off = 0;
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char nbuf[INET6_ADDRSTRLEN];
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switch (addr->sa_family) {
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case PF_INET:
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off = __builtin_offsetof(struct sockaddr_in, sin_addr);
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break;
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case PF_INET6:
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off = __builtin_offsetof(struct sockaddr_in6, sin6_addr);
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break;
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default:
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error(1, 0, "printaddr: unsupported family %u\n",
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addr->sa_family);
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}
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if (!inet_ntop(addr->sa_family, ((void *) addr) + off, nbuf,
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sizeof(nbuf)))
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error(1, errno, "inet_ntop");
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fprintf(stderr, "%s: %s\n", msg, nbuf);
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}
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static unsigned long add_csum_hword(const uint16_t *start, int num_u16)
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{
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unsigned long sum = 0;
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int i;
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for (i = 0; i < num_u16; i++)
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sum += start[i];
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return sum;
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}
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static uint16_t build_ip_csum(const uint16_t *start, int num_u16,
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unsigned long sum)
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{
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sum += add_csum_hword(start, num_u16);
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while (sum >> 16)
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sum = (sum & 0xffff) + (sum >> 16);
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return ~sum;
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}
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static void build_ipv4_header(void *header, uint8_t proto,
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uint32_t src, uint32_t dst,
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int payload_len, uint8_t tos)
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{
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struct iphdr *iph = header;
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iph->ihl = 5;
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iph->version = 4;
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iph->tos = tos;
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iph->ttl = 8;
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iph->tot_len = htons(sizeof(*iph) + payload_len);
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iph->id = htons(1337);
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iph->protocol = proto;
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iph->saddr = src;
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iph->daddr = dst;
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iph->check = build_ip_csum((void *) iph, iph->ihl << 1, 0);
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}
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static void ipv6_set_dsfield(struct ipv6hdr *ip6h, uint8_t dsfield)
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{
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uint16_t val, *ptr = (uint16_t *)ip6h;
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val = ntohs(*ptr);
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val &= 0xF00F;
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val |= ((uint16_t) dsfield) << 4;
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*ptr = htons(val);
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}
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static void build_ipv6_header(void *header, uint8_t proto,
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struct sockaddr_in6 *src,
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struct sockaddr_in6 *dst,
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int payload_len, uint8_t dsfield)
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{
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struct ipv6hdr *ip6h = header;
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ip6h->version = 6;
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ip6h->payload_len = htons(payload_len);
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ip6h->nexthdr = proto;
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ip6h->hop_limit = 8;
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ipv6_set_dsfield(ip6h, dsfield);
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memcpy(&ip6h->saddr, &src->sin6_addr, sizeof(ip6h->saddr));
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memcpy(&ip6h->daddr, &dst->sin6_addr, sizeof(ip6h->daddr));
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}
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static uint16_t build_udp_v4_csum(const struct iphdr *iph,
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const struct udphdr *udph,
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int num_words)
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{
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unsigned long pseudo_sum;
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int num_u16 = sizeof(iph->saddr); /* halfwords: twice byte len */
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pseudo_sum = add_csum_hword((void *) &iph->saddr, num_u16);
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pseudo_sum += htons(IPPROTO_UDP);
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pseudo_sum += udph->len;
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return build_ip_csum((void *) udph, num_words, pseudo_sum);
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}
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static uint16_t build_udp_v6_csum(const struct ipv6hdr *ip6h,
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const struct udphdr *udph,
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int num_words)
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{
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unsigned long pseudo_sum;
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int num_u16 = sizeof(ip6h->saddr); /* halfwords: twice byte len */
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pseudo_sum = add_csum_hword((void *) &ip6h->saddr, num_u16);
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pseudo_sum += htons(ip6h->nexthdr);
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pseudo_sum += ip6h->payload_len;
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return build_ip_csum((void *) udph, num_words, pseudo_sum);
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}
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static void build_udp_header(void *header, int payload_len,
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uint16_t dport, int family)
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{
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struct udphdr *udph = header;
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int len = sizeof(*udph) + payload_len;
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udph->source = htons(cfg_src_port);
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udph->dest = htons(dport);
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udph->len = htons(len);
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udph->check = 0;
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if (family == AF_INET)
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udph->check = build_udp_v4_csum(header - sizeof(struct iphdr),
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udph, len >> 1);
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else
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udph->check = build_udp_v6_csum(header - sizeof(struct ipv6hdr),
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udph, len >> 1);
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}
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static void build_gue_header(void *header, uint8_t proto)
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{
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struct guehdr *gueh = header;
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gueh->proto_ctype = proto;
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}
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static void build_gre_header(void *header, uint16_t proto)
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{
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struct grehdr *greh = header;
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greh->protocol = htons(proto);
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}
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static int l3_length(int family)
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{
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if (family == AF_INET)
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return sizeof(struct iphdr);
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else
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return sizeof(struct ipv6hdr);
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}
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static int build_packet(void)
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{
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int ol3_len = 0, ol4_len = 0, il3_len = 0, il4_len = 0;
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int el3_len = 0;
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if (cfg_l3_extra)
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el3_len = l3_length(cfg_l3_extra);
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/* calculate header offsets */
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if (cfg_encap_proto) {
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ol3_len = l3_length(cfg_l3_outer);
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if (cfg_encap_proto == IPPROTO_GRE)
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ol4_len = sizeof(struct grehdr);
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else if (cfg_encap_proto == IPPROTO_UDP)
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ol4_len = sizeof(struct udphdr) + sizeof(struct guehdr);
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}
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il3_len = l3_length(cfg_l3_inner);
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il4_len = sizeof(struct udphdr);
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if (el3_len + ol3_len + ol4_len + il3_len + il4_len + cfg_payload_len >=
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sizeof(buf))
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error(1, 0, "packet too large\n");
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/*
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* Fill packet from inside out, to calculate correct checksums.
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* But create ip before udp headers, as udp uses ip for pseudo-sum.
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*/
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memset(buf + el3_len + ol3_len + ol4_len + il3_len + il4_len,
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cfg_payload_char, cfg_payload_len);
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/* add zero byte for udp csum padding */
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buf[el3_len + ol3_len + ol4_len + il3_len + il4_len + cfg_payload_len] = 0;
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switch (cfg_l3_inner) {
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case PF_INET:
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build_ipv4_header(buf + el3_len + ol3_len + ol4_len,
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IPPROTO_UDP,
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in_saddr4.sin_addr.s_addr,
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in_daddr4.sin_addr.s_addr,
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il4_len + cfg_payload_len,
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cfg_dsfield_inner);
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break;
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case PF_INET6:
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build_ipv6_header(buf + el3_len + ol3_len + ol4_len,
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IPPROTO_UDP,
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&in_saddr6, &in_daddr6,
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il4_len + cfg_payload_len,
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cfg_dsfield_inner);
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break;
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}
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build_udp_header(buf + el3_len + ol3_len + ol4_len + il3_len,
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cfg_payload_len, CFG_PORT_INNER, cfg_l3_inner);
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if (!cfg_encap_proto)
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return il3_len + il4_len + cfg_payload_len;
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switch (cfg_l3_outer) {
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case PF_INET:
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build_ipv4_header(buf + el3_len, cfg_encap_proto,
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out_saddr4.sin_addr.s_addr,
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out_daddr4.sin_addr.s_addr,
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ol4_len + il3_len + il4_len + cfg_payload_len,
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cfg_dsfield_outer);
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break;
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case PF_INET6:
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build_ipv6_header(buf + el3_len, cfg_encap_proto,
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&out_saddr6, &out_daddr6,
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ol4_len + il3_len + il4_len + cfg_payload_len,
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cfg_dsfield_outer);
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break;
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}
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switch (cfg_encap_proto) {
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case IPPROTO_UDP:
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build_gue_header(buf + el3_len + ol3_len + ol4_len -
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sizeof(struct guehdr),
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cfg_l3_inner == PF_INET ? IPPROTO_IPIP
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: IPPROTO_IPV6);
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build_udp_header(buf + el3_len + ol3_len,
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sizeof(struct guehdr) + il3_len + il4_len +
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cfg_payload_len,
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cfg_port_gue, cfg_l3_outer);
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break;
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case IPPROTO_GRE:
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build_gre_header(buf + el3_len + ol3_len,
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cfg_l3_inner == PF_INET ? ETH_P_IP
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: ETH_P_IPV6);
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break;
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}
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switch (cfg_l3_extra) {
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case PF_INET:
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build_ipv4_header(buf,
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cfg_l3_outer == PF_INET ? IPPROTO_IPIP
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: IPPROTO_IPV6,
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extra_saddr4.sin_addr.s_addr,
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extra_daddr4.sin_addr.s_addr,
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ol3_len + ol4_len + il3_len + il4_len +
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cfg_payload_len, 0);
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break;
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case PF_INET6:
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build_ipv6_header(buf,
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cfg_l3_outer == PF_INET ? IPPROTO_IPIP
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: IPPROTO_IPV6,
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&extra_saddr6, &extra_daddr6,
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ol3_len + ol4_len + il3_len + il4_len +
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cfg_payload_len, 0);
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break;
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}
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return el3_len + ol3_len + ol4_len + il3_len + il4_len +
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cfg_payload_len;
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}
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/* sender transmits encapsulated over RAW or unencap'd over UDP */
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static int setup_tx(void)
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{
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int family, fd, ret;
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if (cfg_l3_extra)
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family = cfg_l3_extra;
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else if (cfg_l3_outer)
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family = cfg_l3_outer;
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else
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family = cfg_l3_inner;
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fd = socket(family, SOCK_RAW, IPPROTO_RAW);
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if (fd == -1)
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error(1, errno, "socket tx");
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if (cfg_l3_extra) {
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if (cfg_l3_extra == PF_INET)
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ret = connect(fd, (void *) &extra_daddr4,
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sizeof(extra_daddr4));
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else
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ret = connect(fd, (void *) &extra_daddr6,
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sizeof(extra_daddr6));
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if (ret)
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error(1, errno, "connect tx");
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} else if (cfg_l3_outer) {
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/* connect to destination if not encapsulated */
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if (cfg_l3_outer == PF_INET)
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ret = connect(fd, (void *) &out_daddr4,
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sizeof(out_daddr4));
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else
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ret = connect(fd, (void *) &out_daddr6,
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sizeof(out_daddr6));
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if (ret)
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error(1, errno, "connect tx");
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} else {
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/* otherwise using loopback */
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if (cfg_l3_inner == PF_INET)
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ret = connect(fd, (void *) &in_daddr4,
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sizeof(in_daddr4));
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else
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ret = connect(fd, (void *) &in_daddr6,
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sizeof(in_daddr6));
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if (ret)
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error(1, errno, "connect tx");
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}
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return fd;
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}
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/* receiver reads unencapsulated UDP */
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static int setup_rx(void)
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{
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int fd, ret;
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fd = socket(cfg_l3_inner, SOCK_DGRAM, 0);
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if (fd == -1)
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error(1, errno, "socket rx");
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if (cfg_l3_inner == PF_INET)
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ret = bind(fd, (void *) &in_daddr4, sizeof(in_daddr4));
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else
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ret = bind(fd, (void *) &in_daddr6, sizeof(in_daddr6));
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if (ret)
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error(1, errno, "bind rx");
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return fd;
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}
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static int do_tx(int fd, const char *pkt, int len)
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{
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int ret;
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ret = write(fd, pkt, len);
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if (ret == -1)
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error(1, errno, "send");
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if (ret != len)
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error(1, errno, "send: len (%d < %d)\n", ret, len);
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return 1;
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}
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static int do_poll(int fd, short events, int timeout)
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{
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struct pollfd pfd;
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int ret;
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pfd.fd = fd;
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pfd.events = events;
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ret = poll(&pfd, 1, timeout);
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if (ret == -1)
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error(1, errno, "poll");
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if (ret && !(pfd.revents & POLLIN))
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error(1, errno, "poll: unexpected event 0x%x\n", pfd.revents);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int do_rx(int fd)
|
|
{
|
|
char rbuf;
|
|
int ret, num = 0;
|
|
|
|
while (1) {
|
|
ret = recv(fd, &rbuf, 1, MSG_DONTWAIT);
|
|
if (ret == -1 && errno == EAGAIN)
|
|
break;
|
|
if (ret == -1)
|
|
error(1, errno, "recv");
|
|
if (rbuf != cfg_payload_char)
|
|
error(1, 0, "recv: payload mismatch");
|
|
num++;
|
|
};
|
|
|
|
return num;
|
|
}
|
|
|
|
static int do_main(void)
|
|
{
|
|
unsigned long tstop, treport, tcur;
|
|
int fdt = -1, fdr = -1, len, tx = 0, rx = 0;
|
|
|
|
if (!cfg_only_tx)
|
|
fdr = setup_rx();
|
|
if (!cfg_only_rx)
|
|
fdt = setup_tx();
|
|
|
|
len = build_packet();
|
|
|
|
tcur = util_gettime();
|
|
treport = tcur + 1000;
|
|
tstop = tcur + (cfg_num_secs * 1000);
|
|
|
|
while (1) {
|
|
if (!cfg_only_rx)
|
|
tx += do_tx(fdt, buf, len);
|
|
|
|
if (!cfg_only_tx)
|
|
rx += do_rx(fdr);
|
|
|
|
if (cfg_num_secs) {
|
|
tcur = util_gettime();
|
|
if (tcur >= tstop)
|
|
break;
|
|
if (tcur >= treport) {
|
|
fprintf(stderr, "pkts: tx=%u rx=%u\n", tx, rx);
|
|
tx = 0;
|
|
rx = 0;
|
|
treport = tcur + 1000;
|
|
}
|
|
} else {
|
|
if (tx == cfg_num_pkt)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* read straggler packets, if any */
|
|
if (rx < tx) {
|
|
tstop = util_gettime() + 100;
|
|
while (rx < tx) {
|
|
tcur = util_gettime();
|
|
if (tcur >= tstop)
|
|
break;
|
|
|
|
do_poll(fdr, POLLIN, tstop - tcur);
|
|
rx += do_rx(fdr);
|
|
}
|
|
}
|
|
|
|
fprintf(stderr, "pkts: tx=%u rx=%u\n", tx, rx);
|
|
|
|
if (fdr != -1 && close(fdr))
|
|
error(1, errno, "close rx");
|
|
if (fdt != -1 && close(fdt))
|
|
error(1, errno, "close tx");
|
|
|
|
/*
|
|
* success (== 0) only if received all packets
|
|
* unless failure is expected, in which case none must arrive.
|
|
*/
|
|
if (cfg_expect_failure)
|
|
return rx != 0;
|
|
else
|
|
return rx != tx;
|
|
}
|
|
|
|
|
|
static void __attribute__((noreturn)) usage(const char *filepath)
|
|
{
|
|
fprintf(stderr, "Usage: %s [-e gre|gue|bare|none] [-i 4|6] [-l len] "
|
|
"[-O 4|6] [-o 4|6] [-n num] [-t secs] [-R] [-T] "
|
|
"[-s <osrc> [-d <odst>] [-S <isrc>] [-D <idst>] "
|
|
"[-x <otos>] [-X <itos>] [-f <isport>] [-F]\n",
|
|
filepath);
|
|
exit(1);
|
|
}
|
|
|
|
static void parse_addr(int family, void *addr, const char *optarg)
|
|
{
|
|
int ret;
|
|
|
|
ret = inet_pton(family, optarg, addr);
|
|
if (ret == -1)
|
|
error(1, errno, "inet_pton");
|
|
if (ret == 0)
|
|
error(1, 0, "inet_pton: bad string");
|
|
}
|
|
|
|
static void parse_addr4(struct sockaddr_in *addr, const char *optarg)
|
|
{
|
|
parse_addr(AF_INET, &addr->sin_addr, optarg);
|
|
}
|
|
|
|
static void parse_addr6(struct sockaddr_in6 *addr, const char *optarg)
|
|
{
|
|
parse_addr(AF_INET6, &addr->sin6_addr, optarg);
|
|
}
|
|
|
|
static int parse_protocol_family(const char *filepath, const char *optarg)
|
|
{
|
|
if (!strcmp(optarg, "4"))
|
|
return PF_INET;
|
|
if (!strcmp(optarg, "6"))
|
|
return PF_INET6;
|
|
|
|
usage(filepath);
|
|
}
|
|
|
|
static void parse_opts(int argc, char **argv)
|
|
{
|
|
int c;
|
|
|
|
while ((c = getopt(argc, argv, "d:D:e:f:Fhi:l:n:o:O:Rs:S:t:Tx:X:")) != -1) {
|
|
switch (c) {
|
|
case 'd':
|
|
if (cfg_l3_outer == AF_UNSPEC)
|
|
error(1, 0, "-d must be preceded by -o");
|
|
if (cfg_l3_outer == AF_INET)
|
|
parse_addr4(&out_daddr4, optarg);
|
|
else
|
|
parse_addr6(&out_daddr6, optarg);
|
|
break;
|
|
case 'D':
|
|
if (cfg_l3_inner == AF_UNSPEC)
|
|
error(1, 0, "-D must be preceded by -i");
|
|
if (cfg_l3_inner == AF_INET)
|
|
parse_addr4(&in_daddr4, optarg);
|
|
else
|
|
parse_addr6(&in_daddr6, optarg);
|
|
break;
|
|
case 'e':
|
|
if (!strcmp(optarg, "gre"))
|
|
cfg_encap_proto = IPPROTO_GRE;
|
|
else if (!strcmp(optarg, "gue"))
|
|
cfg_encap_proto = IPPROTO_UDP;
|
|
else if (!strcmp(optarg, "bare"))
|
|
cfg_encap_proto = IPPROTO_IPIP;
|
|
else if (!strcmp(optarg, "none"))
|
|
cfg_encap_proto = IPPROTO_IP; /* == 0 */
|
|
else
|
|
usage(argv[0]);
|
|
break;
|
|
case 'f':
|
|
cfg_src_port = strtol(optarg, NULL, 0);
|
|
break;
|
|
case 'F':
|
|
cfg_expect_failure = true;
|
|
break;
|
|
case 'h':
|
|
usage(argv[0]);
|
|
break;
|
|
case 'i':
|
|
if (!strcmp(optarg, "4"))
|
|
cfg_l3_inner = PF_INET;
|
|
else if (!strcmp(optarg, "6"))
|
|
cfg_l3_inner = PF_INET6;
|
|
else
|
|
usage(argv[0]);
|
|
break;
|
|
case 'l':
|
|
cfg_payload_len = strtol(optarg, NULL, 0);
|
|
break;
|
|
case 'n':
|
|
cfg_num_pkt = strtol(optarg, NULL, 0);
|
|
break;
|
|
case 'o':
|
|
cfg_l3_outer = parse_protocol_family(argv[0], optarg);
|
|
break;
|
|
case 'O':
|
|
cfg_l3_extra = parse_protocol_family(argv[0], optarg);
|
|
break;
|
|
case 'R':
|
|
cfg_only_rx = true;
|
|
break;
|
|
case 's':
|
|
if (cfg_l3_outer == AF_INET)
|
|
parse_addr4(&out_saddr4, optarg);
|
|
else
|
|
parse_addr6(&out_saddr6, optarg);
|
|
break;
|
|
case 'S':
|
|
if (cfg_l3_inner == AF_INET)
|
|
parse_addr4(&in_saddr4, optarg);
|
|
else
|
|
parse_addr6(&in_saddr6, optarg);
|
|
break;
|
|
case 't':
|
|
cfg_num_secs = strtol(optarg, NULL, 0);
|
|
break;
|
|
case 'T':
|
|
cfg_only_tx = true;
|
|
break;
|
|
case 'x':
|
|
cfg_dsfield_outer = strtol(optarg, NULL, 0);
|
|
break;
|
|
case 'X':
|
|
cfg_dsfield_inner = strtol(optarg, NULL, 0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (cfg_only_rx && cfg_only_tx)
|
|
error(1, 0, "options: cannot combine rx-only and tx-only");
|
|
|
|
if (cfg_encap_proto && cfg_l3_outer == AF_UNSPEC)
|
|
error(1, 0, "options: must specify outer with encap");
|
|
else if ((!cfg_encap_proto) && cfg_l3_outer != AF_UNSPEC)
|
|
error(1, 0, "options: cannot combine no-encap and outer");
|
|
else if ((!cfg_encap_proto) && cfg_l3_extra != AF_UNSPEC)
|
|
error(1, 0, "options: cannot combine no-encap and extra");
|
|
|
|
if (cfg_l3_inner == AF_UNSPEC)
|
|
cfg_l3_inner = AF_INET6;
|
|
if (cfg_l3_inner == AF_INET6 && cfg_encap_proto == IPPROTO_IPIP)
|
|
cfg_encap_proto = IPPROTO_IPV6;
|
|
|
|
/* RFC 6040 4.2:
|
|
* on decap, if outer encountered congestion (CE == 0x3),
|
|
* but inner cannot encode ECN (NoECT == 0x0), then drop packet.
|
|
*/
|
|
if (((cfg_dsfield_outer & 0x3) == 0x3) &&
|
|
((cfg_dsfield_inner & 0x3) == 0x0))
|
|
cfg_expect_failure = true;
|
|
}
|
|
|
|
static void print_opts(void)
|
|
{
|
|
if (cfg_l3_inner == PF_INET6) {
|
|
util_printaddr("inner.dest6", (void *) &in_daddr6);
|
|
util_printaddr("inner.source6", (void *) &in_saddr6);
|
|
} else {
|
|
util_printaddr("inner.dest4", (void *) &in_daddr4);
|
|
util_printaddr("inner.source4", (void *) &in_saddr4);
|
|
}
|
|
|
|
if (!cfg_l3_outer)
|
|
return;
|
|
|
|
fprintf(stderr, "encap proto: %u\n", cfg_encap_proto);
|
|
|
|
if (cfg_l3_outer == PF_INET6) {
|
|
util_printaddr("outer.dest6", (void *) &out_daddr6);
|
|
util_printaddr("outer.source6", (void *) &out_saddr6);
|
|
} else {
|
|
util_printaddr("outer.dest4", (void *) &out_daddr4);
|
|
util_printaddr("outer.source4", (void *) &out_saddr4);
|
|
}
|
|
|
|
if (!cfg_l3_extra)
|
|
return;
|
|
|
|
if (cfg_l3_outer == PF_INET6) {
|
|
util_printaddr("extra.dest6", (void *) &extra_daddr6);
|
|
util_printaddr("extra.source6", (void *) &extra_saddr6);
|
|
} else {
|
|
util_printaddr("extra.dest4", (void *) &extra_daddr4);
|
|
util_printaddr("extra.source4", (void *) &extra_saddr4);
|
|
}
|
|
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
parse_opts(argc, argv);
|
|
print_opts();
|
|
return do_main();
|
|
}
|