--- /dev/null
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Author: Justin Iurman <justin.iurman@uliege.be>
+#
+# This test evaluates the IOAM insertion for IPv6 by checking the IOAM data
+# integrity on the receiver.
+#
+# The topology is formed by 3 nodes: Alpha (sender), Beta (router in-between)
+# and Gamma (receiver). An IOAM domain is configured from Alpha to Gamma only,
+# which means not on the reverse path. When Gamma is the destination, Alpha
+# adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop and fills the
+# trace with its own IOAM data. Beta and Gamma also fill the trace. The IOAM
+# data integrity is checked on Gamma, by comparing with the pre-defined IOAM
+# configuration (see below).
+#
+# +-------------------+ +-------------------+
+# | | | |
+# | alpha netns | | gamma netns |
+# | | | |
+# | +-------------+ | | +-------------+ |
+# | | veth0 | | | | veth0 | |
+# | | db01::2/64 | | | | db02::2/64 | |
+# | +-------------+ | | +-------------+ |
+# | . | | . |
+# +-------------------+ +-------------------+
+# . .
+# . .
+# . .
+# +----------------------------------------------------+
+# | . . |
+# | +-------------+ +-------------+ |
+# | | veth0 | | veth1 | |
+# | | db01::1/64 | ................ | db02::1/64 | |
+# | +-------------+ +-------------+ |
+# | |
+# | beta netns |
+# | |
+# +--------------------------+-------------------------+
+#
+#
+# ~~~~~~~~~~~~~~~~~~~~~~
+# | IOAM configuration |
+# ~~~~~~~~~~~~~~~~~~~~~~
+#
+# Alpha
+# +-----------------------------------------------------------+
+# | Type | Value |
+# +-----------------------------------------------------------+
+# | Node ID | 1 |
+# +-----------------------------------------------------------+
+# | Node Wide ID | 11111111 |
+# +-----------------------------------------------------------+
+# | Ingress ID | 0xffff (default value) |
+# +-----------------------------------------------------------+
+# | Ingress Wide ID | 0xffffffff (default value) |
+# +-----------------------------------------------------------+
+# | Egress ID | 101 |
+# +-----------------------------------------------------------+
+# | Egress Wide ID | 101101 |
+# +-----------------------------------------------------------+
+# | Namespace Data | 0xdeadbee0 |
+# +-----------------------------------------------------------+
+# | Namespace Wide Data | 0xcafec0caf00dc0de |
+# +-----------------------------------------------------------+
+# | Schema ID | 777 |
+# +-----------------------------------------------------------+
+# | Schema Data | something that will be 4n-aligned |
+# +-----------------------------------------------------------+
+#
+# Note: When Gamma is the destination, Alpha adds an IOAM Pre-allocated Trace
+# option inside a Hop-by-hop, where 164 bytes are pre-allocated for the
+# trace, with 123 as the IOAM-Namespace and with 0xfff00200 as the trace
+# type (= all available options at this time). As a result, and based on
+# IOAM configurations here, only both Alpha and Beta should be capable of
+# inserting their IOAM data while Gamma won't have enough space and will
+# set the overflow bit.
+#
+# Beta
+# +-----------------------------------------------------------+
+# | Type | Value |
+# +-----------------------------------------------------------+
+# | Node ID | 2 |
+# +-----------------------------------------------------------+
+# | Node Wide ID | 22222222 |
+# +-----------------------------------------------------------+
+# | Ingress ID | 201 |
+# +-----------------------------------------------------------+
+# | Ingress Wide ID | 201201 |
+# +-----------------------------------------------------------+
+# | Egress ID | 202 |
+# +-----------------------------------------------------------+
+# | Egress Wide ID | 202202 |
+# +-----------------------------------------------------------+
+# | Namespace Data | 0xdeadbee1 |
+# +-----------------------------------------------------------+
+# | Namespace Wide Data | 0xcafec0caf11dc0de |
+# +-----------------------------------------------------------+
+# | Schema ID | 0xffffff (= None) |
+# +-----------------------------------------------------------+
+# | Schema Data | |
+# +-----------------------------------------------------------+
+#
+# Gamma
+# +-----------------------------------------------------------+
+# | Type | Value |
+# +-----------------------------------------------------------+
+# | Node ID | 3 |
+# +-----------------------------------------------------------+
+# | Node Wide ID | 33333333 |
+# +-----------------------------------------------------------+
+# | Ingress ID | 301 |
+# +-----------------------------------------------------------+
+# | Ingress Wide ID | 301301 |
+# +-----------------------------------------------------------+
+# | Egress ID | 0xffff (default value) |
+# +-----------------------------------------------------------+
+# | Egress Wide ID | 0xffffffff (default value) |
+# +-----------------------------------------------------------+
+# | Namespace Data | 0xdeadbee2 |
+# +-----------------------------------------------------------+
+# | Namespace Wide Data | 0xcafec0caf22dc0de |
+# +-----------------------------------------------------------+
+# | Schema ID | 0xffffff (= None) |
+# +-----------------------------------------------------------+
+# | Schema Data | |
+# +-----------------------------------------------------------+
+
+#===============================================================================
+#
+# WARNING:
+# Do NOT modify the following configuration unless you know what you're doing.
+#
+IOAM_NAMESPACE=123
+IOAM_TRACE_TYPE=0xfff00200
+IOAM_PREALLOC_DATA_SIZE=164
+
+ALPHA=(
+ 1 # ID
+ 11111111 # Wide ID
+ 0xffff # Ingress ID
+ 0xffffffff # Ingress Wide ID
+ 101 # Egress ID
+ 101101 # Egress Wide ID
+ 0xdeadbee0 # Namespace Data
+ 0xcafec0caf00dc0de # Namespace Wide Data
+ 777 # Schema ID (0xffffff = None)
+ "something that will be 4n-aligned" # Schema Data
+)
+
+BETA=(
+ 2
+ 22222222
+ 201
+ 201201
+ 202
+ 202202
+ 0xdeadbee1
+ 0xcafec0caf11dc0de
+ 0xffffff
+ ""
+)
+
+GAMMA=(
+ 3
+ 33333333
+ 301
+ 301301
+ 0xffff
+ 0xffffffff
+ 0xdeadbee2
+ 0xcafec0caf22dc0de
+ 0xffffff
+ ""
+)
+#===============================================================================
+
+if [ "$(id -u)" -ne 0 ]; then
+ echo "SKIP: Need root privileges"
+ exit 1
+fi
+
+if [ ! -x "$(command -v ip)" ]; then
+ echo "SKIP: Could not run test without ip tool"
+ exit 1
+fi
+
+ip ioam &>/dev/null
+if [ $? = 1 ]; then
+ echo "SKIP: ip tool must include IOAM"
+ exit 1
+fi
+
+if [ ! -e /proc/sys/net/ipv6/ioam6_id ]; then
+ echo "SKIP: ioam6 sysctls do not exist"
+ exit 1
+fi
+
+cleanup()
+{
+ ip link del ioam-veth-alpha 2>/dev/null || true
+ ip link del ioam-veth-gamma 2>/dev/null || true
+
+ ip netns del ioam-node-alpha || true
+ ip netns del ioam-node-beta || true
+ ip netns del ioam-node-gamma || true
+}
+
+setup()
+{
+ ip netns add ioam-node-alpha
+ ip netns add ioam-node-beta
+ ip netns add ioam-node-gamma
+
+ ip link add name ioam-veth-alpha type veth peer name ioam-veth-betaL
+ ip link add name ioam-veth-betaR type veth peer name ioam-veth-gamma
+
+ ip link set ioam-veth-alpha netns ioam-node-alpha
+ ip link set ioam-veth-betaL netns ioam-node-beta
+ ip link set ioam-veth-betaR netns ioam-node-beta
+ ip link set ioam-veth-gamma netns ioam-node-gamma
+
+ ip -netns ioam-node-alpha link set ioam-veth-alpha name veth0
+ ip -netns ioam-node-beta link set ioam-veth-betaL name veth0
+ ip -netns ioam-node-beta link set ioam-veth-betaR name veth1
+ ip -netns ioam-node-gamma link set ioam-veth-gamma name veth0
+
+ ip -netns ioam-node-alpha addr add db01::2/64 dev veth0
+ ip -netns ioam-node-alpha link set veth0 up
+ ip -netns ioam-node-alpha link set lo up
+ ip -netns ioam-node-alpha route add default via db01::1
+
+ ip -netns ioam-node-beta addr add db01::1/64 dev veth0
+ ip -netns ioam-node-beta addr add db02::1/64 dev veth1
+ ip -netns ioam-node-beta link set veth0 up
+ ip -netns ioam-node-beta link set veth1 up
+ ip -netns ioam-node-beta link set lo up
+
+ ip -netns ioam-node-gamma addr add db02::2/64 dev veth0
+ ip -netns ioam-node-gamma link set veth0 up
+ ip -netns ioam-node-gamma link set lo up
+ ip -netns ioam-node-gamma route add default via db02::1
+
+ # - IOAM config -
+ ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]}
+ ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]}
+ ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]}
+ ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]}
+ ip -netns ioam-node-alpha ioam namespace add ${IOAM_NAMESPACE} data ${ALPHA[6]} wide ${ALPHA[7]}
+ ip -netns ioam-node-alpha ioam schema add ${ALPHA[8]} "${ALPHA[9]}"
+ ip -netns ioam-node-alpha ioam namespace set ${IOAM_NAMESPACE} schema ${ALPHA[8]}
+ ip -netns ioam-node-alpha route add db02::/64 encap ioam6 trace type ${IOAM_TRACE_TYPE:0:-2} ns ${IOAM_NAMESPACE} size ${IOAM_PREALLOC_DATA_SIZE} via db01::1 dev veth0
+
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.all.forwarding=1
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id=${BETA[0]}
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]}
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]}
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]}
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]}
+ ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]}
+ ip -netns ioam-node-beta ioam namespace add ${IOAM_NAMESPACE} data ${BETA[6]} wide ${BETA[7]}
+
+ ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id=${GAMMA[0]}
+ ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id_wide=${GAMMA[1]}
+ ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
+ ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id=${GAMMA[2]}
+ ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${GAMMA[3]}
+ ip -netns ioam-node-gamma ioam namespace add ${IOAM_NAMESPACE} data ${GAMMA[6]} wide ${GAMMA[7]}
+}
+
+run()
+{
+ echo -n "IOAM test... "
+
+ ip netns exec ioam-node-alpha ping6 -c 5 -W 1 db02::2 &>/dev/null
+ if [ $? != 0 ]; then
+ echo "FAILED"
+ cleanup &>/dev/null
+ exit 0
+ fi
+
+ ip netns exec ioam-node-gamma ./ioam6_parser veth0 2 ${IOAM_NAMESPACE} ${IOAM_TRACE_TYPE} 64 ${ALPHA[0]} ${ALPHA[1]} ${ALPHA[2]} ${ALPHA[3]} ${ALPHA[4]} ${ALPHA[5]} ${ALPHA[6]} ${ALPHA[7]} ${ALPHA[8]} "${ALPHA[9]}" 63 ${BETA[0]} ${BETA[1]} ${BETA[2]} ${BETA[3]} ${BETA[4]} ${BETA[5]} ${BETA[6]} ${BETA[7]} ${BETA[8]} &
+
+ local spid=$!
+ sleep 0.1
+
+ ip netns exec ioam-node-alpha ping6 -c 5 -W 1 db02::2 &>/dev/null
+
+ wait $spid
+ [ $? = 0 ] && echo "PASSED" || echo "FAILED"
+}
+
+cleanup &>/dev/null
+setup
+run
+cleanup &>/dev/null
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Author: Justin Iurman (justin.iurman@uliege.be)
+ *
+ * IOAM parser for IPv6, see ioam6.sh for details.
+ */
+#include <asm/byteorder.h>
+#include <linux/const.h>
+#include <linux/if_ether.h>
+#include <linux/ioam6.h>
+#include <linux/ipv6.h>
+#include <sys/socket.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+struct node_args {
+ __u32 id;
+ __u64 wide;
+ __u16 ingr_id;
+ __u16 egr_id;
+ __u32 ingr_wide;
+ __u32 egr_wide;
+ __u32 ns_data;
+ __u64 ns_wide;
+ __u32 sc_id;
+ __u8 hop_limit;
+ __u8 *sc_data; /* NULL when sc_id = 0xffffff (default empty value) */
+};
+
+/* expected args per node, in that order */
+enum {
+ NODE_ARG_HOP_LIMIT,
+ NODE_ARG_ID,
+ NODE_ARG_WIDE,
+ NODE_ARG_INGR_ID,
+ NODE_ARG_INGR_WIDE,
+ NODE_ARG_EGR_ID,
+ NODE_ARG_EGR_WIDE,
+ NODE_ARG_NS_DATA,
+ NODE_ARG_NS_WIDE,
+ NODE_ARG_SC_ID,
+ __NODE_ARG_MAX,
+};
+
+#define NODE_ARGS_SIZE __NODE_ARG_MAX
+
+struct args {
+ __u16 ns_id;
+ __u32 trace_type;
+ __u8 n_node;
+ __u8 *ifname;
+ struct node_args node[0];
+};
+
+/* expected args, in that order */
+enum {
+ ARG_IFNAME,
+ ARG_N_NODE,
+ ARG_NS_ID,
+ ARG_TRACE_TYPE,
+ __ARG_MAX,
+};
+
+#define ARGS_SIZE __ARG_MAX
+
+int check_ioam6_node_data(__u8 **p, struct ioam6_trace_hdr *trace, __u8 hlim,
+ __u32 id, __u64 wide, __u16 ingr_id, __u32 ingr_wide,
+ __u16 egr_id, __u32 egr_wide, __u32 ns_data,
+ __u64 ns_wide, __u32 sc_id, __u8 *sc_data)
+{
+ __u64 raw64;
+ __u32 raw32;
+ __u8 sc_len;
+
+ if (trace->type.bit0) {
+ raw32 = __be32_to_cpu(*((__u32 *)*p));
+ if (hlim != (raw32 >> 24) || id != (raw32 & 0xffffff))
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit1) {
+ raw32 = __be32_to_cpu(*((__u32 *)*p));
+ if (ingr_id != (raw32 >> 16) || egr_id != (raw32 & 0xffff))
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit2)
+ *p += sizeof(__u32);
+
+ if (trace->type.bit3)
+ *p += sizeof(__u32);
+
+ if (trace->type.bit4) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit5) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != ns_data)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit6) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit7) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit8) {
+ raw64 = __be64_to_cpu(*((__u64 *)*p));
+ if (hlim != (raw64 >> 56) || wide != (raw64 & 0xffffffffffffff))
+ return 1;
+ *p += sizeof(__u64);
+ }
+
+ if (trace->type.bit9) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != ingr_wide)
+ return 1;
+ *p += sizeof(__u32);
+
+ if (__be32_to_cpu(*((__u32 *)*p)) != egr_wide)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit10) {
+ if (__be64_to_cpu(*((__u64 *)*p)) != ns_wide)
+ return 1;
+ *p += sizeof(__u64);
+ }
+
+ if (trace->type.bit11) {
+ if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+ return 1;
+ *p += sizeof(__u32);
+ }
+
+ if (trace->type.bit22) {
+ raw32 = __be32_to_cpu(*((__u32 *)*p));
+ sc_len = sc_data ? __ALIGN_KERNEL(strlen(sc_data), 4) : 0;
+ if (sc_len != (raw32 >> 24) * 4 || sc_id != (raw32 & 0xffffff))
+ return 1;
+ *p += sizeof(__u32);
+
+ if (sc_data) {
+ if (strncmp(*p, sc_data, strlen(sc_data)))
+ return 1;
+
+ *p += strlen(sc_data);
+ sc_len -= strlen(sc_data);
+
+ while (sc_len--) {
+ if (**p != '\0')
+ return 1;
+ *p += sizeof(__u8);
+ }
+ }
+ }
+
+ return 0;
+}
+
+int check_ioam6_trace(struct ioam6_trace_hdr *trace, struct args *args)
+{
+ __u8 *p;
+ int i;
+
+ if (__be16_to_cpu(trace->namespace_id) != args->ns_id ||
+ __be32_to_cpu(trace->type_be32) != args->trace_type)
+ return 1;
+
+ p = trace->data + trace->remlen * 4;
+
+ for (i = args->n_node - 1; i >= 0; i--) {
+ if (check_ioam6_node_data(&p, trace,
+ args->node[i].hop_limit,
+ args->node[i].id,
+ args->node[i].wide,
+ args->node[i].ingr_id,
+ args->node[i].ingr_wide,
+ args->node[i].egr_id,
+ args->node[i].egr_wide,
+ args->node[i].ns_data,
+ args->node[i].ns_wide,
+ args->node[i].sc_id,
+ args->node[i].sc_data))
+ return 1;
+ }
+
+ return 0;
+}
+
+int parse_node_args(int *argcp, char ***argvp, struct node_args *node)
+{
+ char **argv = *argvp;
+
+ if (*argcp < NODE_ARGS_SIZE)
+ return 1;
+
+ node->hop_limit = strtoul(argv[NODE_ARG_HOP_LIMIT], NULL, 10);
+ if (!node->hop_limit) {
+ node->hop_limit = strtoul(argv[NODE_ARG_HOP_LIMIT], NULL, 16);
+ if (!node->hop_limit)
+ return 1;
+ }
+
+ node->id = strtoul(argv[NODE_ARG_ID], NULL, 10);
+ if (!node->id) {
+ node->id = strtoul(argv[NODE_ARG_ID], NULL, 16);
+ if (!node->id)
+ return 1;
+ }
+
+ node->wide = strtoull(argv[NODE_ARG_WIDE], NULL, 10);
+ if (!node->wide) {
+ node->wide = strtoull(argv[NODE_ARG_WIDE], NULL, 16);
+ if (!node->wide)
+ return 1;
+ }
+
+ node->ingr_id = strtoul(argv[NODE_ARG_INGR_ID], NULL, 10);
+ if (!node->ingr_id) {
+ node->ingr_id = strtoul(argv[NODE_ARG_INGR_ID], NULL, 16);
+ if (!node->ingr_id)
+ return 1;
+ }
+
+ node->ingr_wide = strtoul(argv[NODE_ARG_INGR_WIDE], NULL, 10);
+ if (!node->ingr_wide) {
+ node->ingr_wide = strtoul(argv[NODE_ARG_INGR_WIDE], NULL, 16);
+ if (!node->ingr_wide)
+ return 1;
+ }
+
+ node->egr_id = strtoul(argv[NODE_ARG_EGR_ID], NULL, 10);
+ if (!node->egr_id) {
+ node->egr_id = strtoul(argv[NODE_ARG_EGR_ID], NULL, 16);
+ if (!node->egr_id)
+ return 1;
+ }
+
+ node->egr_wide = strtoul(argv[NODE_ARG_EGR_WIDE], NULL, 10);
+ if (!node->egr_wide) {
+ node->egr_wide = strtoul(argv[NODE_ARG_EGR_WIDE], NULL, 16);
+ if (!node->egr_wide)
+ return 1;
+ }
+
+ node->ns_data = strtoul(argv[NODE_ARG_NS_DATA], NULL, 16);
+ if (!node->ns_data)
+ return 1;
+
+ node->ns_wide = strtoull(argv[NODE_ARG_NS_WIDE], NULL, 16);
+ if (!node->ns_wide)
+ return 1;
+
+ node->sc_id = strtoul(argv[NODE_ARG_SC_ID], NULL, 10);
+ if (!node->sc_id) {
+ node->sc_id = strtoul(argv[NODE_ARG_SC_ID], NULL, 16);
+ if (!node->sc_id)
+ return 1;
+ }
+
+ *argcp -= NODE_ARGS_SIZE;
+ *argvp += NODE_ARGS_SIZE;
+
+ if (node->sc_id != 0xffffff) {
+ if (!*argcp)
+ return 1;
+
+ node->sc_data = argv[NODE_ARG_SC_ID + 1];
+
+ *argcp -= 1;
+ *argvp += 1;
+ }
+
+ return 0;
+}
+
+struct args *parse_args(int argc, char **argv)
+{
+ struct args *args;
+ int n_node, i;
+
+ if (argc < ARGS_SIZE)
+ goto out;
+
+ n_node = strtoul(argv[ARG_N_NODE], NULL, 10);
+ if (!n_node || n_node > 10)
+ goto out;
+
+ args = calloc(1, sizeof(*args) + n_node * sizeof(struct node_args));
+ if (!args)
+ goto out;
+
+ args->ns_id = strtoul(argv[ARG_NS_ID], NULL, 10);
+ if (!args->ns_id)
+ goto free;
+
+ args->trace_type = strtoul(argv[ARG_TRACE_TYPE], NULL, 16);
+ if (!args->trace_type)
+ goto free;
+
+ args->n_node = n_node;
+ args->ifname = argv[ARG_IFNAME];
+
+ argv += ARGS_SIZE;
+ argc -= ARGS_SIZE;
+
+ for (i = 0; i < n_node; i++) {
+ if (parse_node_args(&argc, &argv, &args->node[i]))
+ goto free;
+ }
+
+ if (argc)
+ goto free;
+
+ return args;
+free:
+ free(args);
+out:
+ return NULL;
+}
+
+int main(int argc, char **argv)
+{
+ int ret, fd, pkts, size, hoplen, found;
+ struct ioam6_trace_hdr *ioam6h;
+ struct ioam6_hdr *opt;
+ struct ipv6hdr *ip6h;
+ __u8 buffer[400], *p;
+ struct args *args;
+
+ args = parse_args(argc - 1, argv + 1);
+ if (!args) {
+ ret = 1;
+ goto out;
+ }
+
+ fd = socket(AF_PACKET, SOCK_DGRAM, __cpu_to_be16(ETH_P_IPV6));
+ if (!fd) {
+ ret = 1;
+ goto out;
+ }
+
+ if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE,
+ args->ifname, strlen(args->ifname))) {
+ ret = 1;
+ goto close;
+ }
+
+ pkts = 0;
+ found = 0;
+ while (pkts < 3 && !found) {
+ size = recv(fd, buffer, sizeof(buffer), 0);
+ ip6h = (struct ipv6hdr *)buffer;
+ pkts++;
+
+ if (ip6h->nexthdr == IPPROTO_HOPOPTS) {
+ p = buffer + sizeof(*ip6h);
+ hoplen = (p[1] + 1) << 3;
+
+ p += sizeof(struct ipv6_hopopt_hdr);
+ while (hoplen > 0) {
+ opt = (struct ioam6_hdr *)p;
+
+ if (opt->opt_type == IPV6_TLV_IOAM &&
+ opt->type == IOAM6_TYPE_PREALLOC) {
+ found = 1;
+
+ p += sizeof(*opt);
+ ioam6h = (struct ioam6_trace_hdr *)p;
+
+ ret = check_ioam6_trace(ioam6h, args);
+ break;
+ }
+
+ p += opt->opt_len + 2;
+ hoplen -= opt->opt_len + 2;
+ }
+ }
+ }
+
+ if (!found)
+ ret = 1;
+close:
+ close(fd);
+out:
+ free(args);
+ return ret;
+}
projects / users / hch / xfs.git / commitdiff