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-rw-r--r--tools/testing/selftests/net/.gitignore3
-rw-r--r--tools/testing/selftests/net/Makefile7
-rw-r--r--tools/testing/selftests/net/bind_bhash.c144
-rwxr-xr-xtools/testing/selftests/net/bind_bhash.sh66
-rwxr-xr-xtools/testing/selftests/net/fcnal-test.sh30
-rw-r--r--tools/testing/selftests/net/forwarding/devlink_lib.sh5
-rwxr-xr-xtools/testing/selftests/net/l2_tos_ttl_inherit.sh390
-rwxr-xr-xtools/testing/selftests/net/mptcp/mptcp_join.sh10
-rw-r--r--tools/testing/selftests/net/nettest.c16
-rw-r--r--tools/testing/selftests/net/sk_bind_sendto_listen.c80
-rw-r--r--tools/testing/selftests/net/sk_connect_zero_addr.c62
-rwxr-xr-xtools/testing/selftests/net/srv6_end_next_csid_l3vpn_test.sh1145
12 files changed, 1950 insertions, 8 deletions
diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
index de7d5cc15f85..3d7adee7a3e6 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
+bind_bhash
cmsg_sender
fin_ack_lat
gro
@@ -21,6 +22,8 @@ reuseport_bpf_cpu
reuseport_bpf_numa
reuseport_dualstack
rxtimestamp
+sk_bind_sendto_listen
+sk_connect_zero_addr
socket
so_netns_cookie
so_txtime
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index c0ee2955fe54..d87e8739bb30 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -37,11 +37,14 @@ TEST_PROGS += srv6_end_dt4_l3vpn_test.sh
TEST_PROGS += srv6_end_dt6_l3vpn_test.sh
TEST_PROGS += srv6_hencap_red_l3vpn_test.sh
TEST_PROGS += srv6_hl2encap_red_l2vpn_test.sh
+TEST_PROGS += srv6_end_next_csid_l3vpn_test.sh
TEST_PROGS += vrf_strict_mode_test.sh
TEST_PROGS += arp_ndisc_evict_nocarrier.sh
TEST_PROGS += ndisc_unsolicited_na_test.sh
TEST_PROGS += arp_ndisc_untracked_subnets.sh
TEST_PROGS += stress_reuseport_listen.sh
+TEST_PROGS += l2_tos_ttl_inherit.sh
+TEST_PROGS += bind_bhash.sh
TEST_PROGS_EXTENDED := in_netns.sh setup_loopback.sh setup_veth.sh
TEST_PROGS_EXTENDED += toeplitz_client.sh toeplitz.sh
TEST_GEN_FILES = socket nettest
@@ -63,6 +66,9 @@ TEST_GEN_FILES += cmsg_sender
TEST_GEN_FILES += stress_reuseport_listen
TEST_PROGS += test_vxlan_vnifiltering.sh
TEST_GEN_FILES += io_uring_zerocopy_tx
+TEST_GEN_FILES += bind_bhash
+TEST_GEN_PROGS += sk_bind_sendto_listen
+TEST_GEN_PROGS += sk_connect_zero_addr
TEST_FILES := settings
@@ -73,3 +79,4 @@ include bpf/Makefile
$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
$(OUTPUT)/tcp_mmap: LDLIBS += -lpthread
$(OUTPUT)/tcp_inq: LDLIBS += -lpthread
+$(OUTPUT)/bind_bhash: LDLIBS += -lpthread
diff --git a/tools/testing/selftests/net/bind_bhash.c b/tools/testing/selftests/net/bind_bhash.c
new file mode 100644
index 000000000000..57ff67a3751e
--- /dev/null
+++ b/tools/testing/selftests/net/bind_bhash.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This times how long it takes to bind to a port when the port already
+ * has multiple sockets in its bhash table.
+ *
+ * In the setup(), we populate the port's bhash table with
+ * MAX_THREADS * MAX_CONNECTIONS number of entries.
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <netdb.h>
+#include <pthread.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define MAX_THREADS 600
+#define MAX_CONNECTIONS 40
+
+static const char *setup_addr_v6 = "::1";
+static const char *setup_addr_v4 = "127.0.0.1";
+static const char *setup_addr;
+static const char *bind_addr;
+static const char *port;
+bool use_v6;
+int ret;
+
+static int fd_array[MAX_THREADS][MAX_CONNECTIONS];
+
+static int bind_socket(int opt, const char *addr)
+{
+ struct addrinfo *res, hint = {};
+ int sock_fd, reuse = 1, err;
+ int domain = use_v6 ? AF_INET6 : AF_INET;
+
+ sock_fd = socket(domain, SOCK_STREAM, 0);
+ if (sock_fd < 0) {
+ perror("socket fd err");
+ return sock_fd;
+ }
+
+ hint.ai_family = domain;
+ hint.ai_socktype = SOCK_STREAM;
+
+ err = getaddrinfo(addr, port, &hint, &res);
+ if (err) {
+ perror("getaddrinfo failed");
+ goto cleanup;
+ }
+
+ if (opt) {
+ err = setsockopt(sock_fd, SOL_SOCKET, opt, &reuse, sizeof(reuse));
+ if (err) {
+ perror("setsockopt failed");
+ goto cleanup;
+ }
+ }
+
+ err = bind(sock_fd, res->ai_addr, res->ai_addrlen);
+ if (err) {
+ perror("failed to bind to port");
+ goto cleanup;
+ }
+
+ return sock_fd;
+
+cleanup:
+ close(sock_fd);
+ return err;
+}
+
+static void *setup(void *arg)
+{
+ int sock_fd, i;
+ int *array = (int *)arg;
+
+ for (i = 0; i < MAX_CONNECTIONS; i++) {
+ sock_fd = bind_socket(SO_REUSEADDR | SO_REUSEPORT, setup_addr);
+ if (sock_fd < 0) {
+ ret = sock_fd;
+ pthread_exit(&ret);
+ }
+ array[i] = sock_fd;
+ }
+
+ return NULL;
+}
+
+int main(int argc, const char *argv[])
+{
+ int listener_fd, sock_fd, i, j;
+ pthread_t tid[MAX_THREADS];
+ clock_t begin, end;
+
+ if (argc != 4) {
+ printf("Usage: listener <port> <ipv6 | ipv4> <bind-addr>\n");
+ return -1;
+ }
+
+ port = argv[1];
+ use_v6 = strcmp(argv[2], "ipv6") == 0;
+ bind_addr = argv[3];
+
+ setup_addr = use_v6 ? setup_addr_v6 : setup_addr_v4;
+
+ listener_fd = bind_socket(SO_REUSEADDR | SO_REUSEPORT, setup_addr);
+ if (listen(listener_fd, 100) < 0) {
+ perror("listen failed");
+ return -1;
+ }
+
+ /* Set up threads to populate the bhash table entry for the port */
+ for (i = 0; i < MAX_THREADS; i++)
+ pthread_create(&tid[i], NULL, setup, fd_array[i]);
+
+ for (i = 0; i < MAX_THREADS; i++)
+ pthread_join(tid[i], NULL);
+
+ if (ret)
+ goto done;
+
+ begin = clock();
+
+ /* Bind to the same port on a different address */
+ sock_fd = bind_socket(0, bind_addr);
+ if (sock_fd < 0)
+ goto done;
+
+ end = clock();
+
+ printf("time spent = %f\n", (double)(end - begin) / CLOCKS_PER_SEC);
+
+ /* clean up */
+ close(sock_fd);
+
+done:
+ close(listener_fd);
+ for (i = 0; i < MAX_THREADS; i++) {
+ for (j = 0; i < MAX_THREADS; i++)
+ close(fd_array[i][j]);
+ }
+
+ return 0;
+}
diff --git a/tools/testing/selftests/net/bind_bhash.sh b/tools/testing/selftests/net/bind_bhash.sh
new file mode 100755
index 000000000000..ca0292d4b441
--- /dev/null
+++ b/tools/testing/selftests/net/bind_bhash.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+NR_FILES=32768
+SAVED_NR_FILES=$(ulimit -n)
+
+# default values
+port=443
+addr_v6="2001:0db8:0:f101::1"
+addr_v4="10.8.8.8"
+use_v6=true
+addr=""
+
+usage() {
+ echo "Usage: $0 [-6 | -4] [-p port] [-a address]"
+ echo -e "\t6: use ipv6"
+ echo -e "\t4: use ipv4"
+ echo -e "\tport: Port number"
+ echo -e "\taddress: ip address"
+}
+
+while getopts "ha:p:64" opt; do
+ case ${opt} in
+ h)
+ usage $0
+ exit 0
+ ;;
+ a) addr=$OPTARG;;
+ p)
+ port=$OPTARG;;
+ 6)
+ use_v6=true;;
+ 4)
+ use_v6=false;;
+ esac
+done
+
+setup() {
+ if [[ "$use_v6" == true ]]; then
+ ip addr add $addr_v6 nodad dev eth0
+ else
+ ip addr add $addr_v4 dev lo
+ fi
+ ulimit -n $NR_FILES
+}
+
+cleanup() {
+ if [[ "$use_v6" == true ]]; then
+ ip addr del $addr_v6 dev eth0
+ else
+ ip addr del $addr_v4/32 dev lo
+ fi
+ ulimit -n $SAVED_NR_FILES
+}
+
+if [[ "$addr" != "" ]]; then
+ addr_v4=$addr;
+ addr_v6=$addr;
+fi
+setup
+if [[ "$use_v6" == true ]] ; then
+ ./bind_bhash $port "ipv6" $addr_v6
+else
+ ./bind_bhash $port "ipv4" $addr_v4
+fi
+cleanup
diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 03b586760164..31c3b6ebd388 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -1467,6 +1467,13 @@ ipv4_udp_novrf()
log_test_addr ${a} $? 0 "Client, device bind via IP_UNICAST_IF"
log_start
+ run_cmd_nsb nettest -D -s &
+ sleep 1
+ run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S -0 ${NSA_IP} -U
+ log_test_addr ${a} $? 0 "Client, device bind via IP_UNICAST_IF, with connect()"
+
+
+ log_start
show_hint "Should fail 'Connection refused'"
run_cmd nettest -D -r ${a}
log_test_addr ${a} $? 1 "No server, unbound client"
@@ -1525,6 +1532,13 @@ ipv4_udp_novrf()
run_cmd nettest -D -d ${NSA_DEV} -S -r ${a}
log_test_addr ${a} $? 0 "Global server, device client via IP_UNICAST_IF, local connection"
+ log_start
+ run_cmd nettest -s -D &
+ sleep 1
+ run_cmd nettest -D -d ${NSA_DEV} -S -r ${a} -U
+ log_test_addr ${a} $? 0 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
+
+
# IPv4 with device bind has really weird behavior - it overrides the
# fib lookup, generates an rtable and tries to send the packet. This
# causes failures for local traffic at different places
@@ -1550,6 +1564,15 @@ ipv4_udp_novrf()
sleep 1
run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S
log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection"
+
+ log_start
+ show_hint "Should fail since addresses on loopback are out of device scope"
+ run_cmd nettest -D -s &
+ sleep 1
+ run_cmd nettest -D -r ${a} -d ${NSA_DEV} -S -U
+ log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
+
+
done
a=${NSA_IP}
@@ -3157,6 +3180,13 @@ ipv6_udp_novrf()
sleep 1
run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -S
log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection"
+
+ log_start
+ show_hint "Should fail 'No route to host' since addresses on loopback are out of device scope"
+ run_cmd nettest -6 -D -s &
+ sleep 1
+ run_cmd nettest -6 -D -r ${a} -d ${NSA_DEV} -S -U
+ log_test_addr ${a} $? 1 "Global server, device client via IP_UNICAST_IF, local connection, with connect()"
done
a=${NSA_IP6}
diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
index de9944d42027..601990c6881b 100644
--- a/tools/testing/selftests/net/forwarding/devlink_lib.sh
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -584,3 +584,8 @@ devlink_cell_size_get()
devlink sb pool show "$DEVLINK_DEV" pool 0 -j \
| jq '.pool[][].cell_size'
}
+
+devlink_pool_size_get()
+{
+ devlink sb show "$DEVLINK_DEV" -j | jq '.[][][]["size"]'
+}
diff --git a/tools/testing/selftests/net/l2_tos_ttl_inherit.sh b/tools/testing/selftests/net/l2_tos_ttl_inherit.sh
new file mode 100755
index 000000000000..dca1e6f777a8
--- /dev/null
+++ b/tools/testing/selftests/net/l2_tos_ttl_inherit.sh
@@ -0,0 +1,390 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Author: Matthias May <matthias.may@westermo.com>
+#
+# This script evaluates ip tunnels that are capable of carrying L2 traffic
+# if they inherit or set the inheritable fields.
+# Namely these tunnels are: 'gretap', 'vxlan' and 'geneve'.
+# Checked inheritable fields are: TOS and TTL.
+# The outer tunnel protocol of 'IPv4' or 'IPv6' is verified-
+# As payload frames of type 'IPv4', 'IPv6' and 'other'(ARP) are verified.
+# In addition this script also checks if forcing a specific field in the
+# outer header is working.
+
+if [ "$(id -u)" != "0" ]; then
+ echo "Please run as root."
+ exit 0
+fi
+if ! which tcpdump > /dev/null 2>&1; then
+ echo "No tcpdump found. Required for this test."
+ exit 0
+fi
+
+expected_tos="0x00"
+expected_ttl="0"
+failed=false
+
+get_random_tos() {
+ # Get a random hex tos value between 0x00 and 0xfc, a multiple of 4
+ echo "0x$(tr -dc '0-9a-f' < /dev/urandom | head -c 1)\
+$(tr -dc '048c' < /dev/urandom | head -c 1)"
+}
+get_random_ttl() {
+ # Get a random dec value between 0 and 255
+ printf "%d" "0x$(tr -dc '0-9a-f' < /dev/urandom | head -c 2)"
+}
+get_field() {
+ # Expects to get the 'head -n 1' of a captured frame by tcpdump.
+ # Parses this first line and returns the specified field.
+ local field="$1"
+ local input="$2"
+ local found=false
+ input="$(echo "$input" | tr -d '(),')"
+ for input_field in $input; do
+ if $found; then
+ echo "$input_field"
+ return
+ fi
+ # The next field that we iterate over is the looked for value
+ if [ "$input_field" = "$field" ]; then
+ found=true
+ fi
+ done
+ echo "0"
+}
+setup() {
+ local type="$1"
+ local outer="$2"
+ local inner="$3"
+ local tos_ttl="$4"
+ local vlan="$5"
+ local test_tos="0x00"
+ local test_ttl="0"
+ local ns="ip netns exec testing"
+
+ # We don't want a test-tos of 0x00,
+ # because this is the value that we get when no tos is set.
+ expected_tos="$(get_random_tos)"
+ while [ "$expected_tos" = "0x00" ]; do
+ expected_tos="$(get_random_tos)"
+ done
+ if [ "$tos_ttl" = "random" ]; then
+ test_tos="$expected_tos"
+ tos="fixed $test_tos"
+ elif [ "$tos_ttl" = "inherit" ]; then
+ test_tos="$tos_ttl"
+ tos="inherit $expected_tos"
+ fi
+
+ # We don't want a test-ttl of 64 or 0,
+ # because 64 is when no ttl is set and 0 is not a valid ttl.
+ expected_ttl="$(get_random_ttl)"
+ while [ "$expected_ttl" = "64" ] || [ "$expected_ttl" = "0" ]; do
+ expected_ttl="$(get_random_ttl)"
+ done
+
+ if [ "$tos_ttl" = "random" ]; then
+ test_ttl="$expected_ttl"
+ ttl="fixed $test_ttl"
+ elif [ "$tos_ttl" = "inherit" ]; then
+ test_ttl="$tos_ttl"
+ ttl="inherit $expected_ttl"
+ fi
+ printf "│%7s │%6s │%6s │%13s │%13s │%6s │" \
+ "$type" "$outer" "$inner" "$tos" "$ttl" "$vlan"
+
+ # Create 'testing' netns, veth pair and connect main ns with testing ns
+ ip netns add testing
+ ip link add type veth
+ ip link set veth1 netns testing
+ ip link set veth0 up
+ $ns ip link set veth1 up
+ ip addr flush dev veth0
+ $ns ip addr flush dev veth1
+
+ local local_addr1=""
+ local local_addr2=""
+ if [ "$type" = "gre" ] || [ "$type" = "vxlan" ]; then
+ if [ "$outer" = "4" ]; then
+ local_addr1="local 198.18.0.1"
+ local_addr2="local 198.18.0.2"
+ elif [ "$outer" = "6" ]; then
+ local_addr1="local fdd1:ced0:5d88:3fce::1"
+ local_addr2="local fdd1:ced0:5d88:3fce::2"
+ fi
+ fi
+ local vxlan=""
+ if [ "$type" = "vxlan" ]; then
+ vxlan="vni 100 dstport 4789"
+ fi
+ local geneve=""
+ if [ "$type" = "geneve" ]; then
+ geneve="vni 100"
+ fi
+ # Create tunnel and assign outer IPv4/IPv6 addresses
+ if [ "$outer" = "4" ]; then
+ if [ "$type" = "gre" ]; then
+ type="gretap"
+ fi
+ ip addr add 198.18.0.1/24 dev veth0
+ $ns ip addr add 198.18.0.2/24 dev veth1
+ ip link add name tep0 type $type $local_addr1 remote \
+ 198.18.0.2 tos $test_tos ttl $test_ttl $vxlan $geneve
+ $ns ip link add name tep1 type $type $local_addr2 remote \
+ 198.18.0.1 tos $test_tos ttl $test_ttl $vxlan $geneve
+ elif [ "$outer" = "6" ]; then
+ if [ "$type" = "gre" ]; then
+ type="ip6gretap"
+ fi
+ ip addr add fdd1:ced0:5d88:3fce::1/64 dev veth0
+ $ns ip addr add fdd1:ced0:5d88:3fce::2/64 dev veth1
+ ip link add name tep0 type $type $local_addr1 \
+ remote fdd1:ced0:5d88:3fce::2 tos $test_tos ttl $test_ttl \
+ $vxlan $geneve
+ $ns ip link add name tep1 type $type $local_addr2 \
+ remote fdd1:ced0:5d88:3fce::1 tos $test_tos ttl $test_ttl \
+ $vxlan $geneve
+ fi
+
+ # Bring L2-tunnel link up and create VLAN on top
+ ip link set tep0 up
+ $ns ip link set tep1 up
+ ip addr flush dev tep0
+ $ns ip addr flush dev tep1
+ local parent
+ if $vlan; then
+ parent="vlan99-"
+ ip link add link tep0 name ${parent}0 type vlan id 99
+ $ns ip link add link tep1 name ${parent}1 type vlan id 99
+ ip link set ${parent}0 up
+ $ns ip link set ${parent}1 up
+ ip addr flush dev ${parent}0
+ $ns ip addr flush dev ${parent}1
+ else
+ parent="tep"
+ fi
+
+ # Assign inner IPv4/IPv6 addresses
+ if [ "$inner" = "4" ] || [ "$inner" = "other" ]; then
+ ip addr add 198.19.0.1/24 brd + dev ${parent}0
+ $ns ip addr add 198.19.0.2/24 brd + dev ${parent}1
+ elif [ "$inner" = "6" ]; then
+ ip addr add fdd4:96cf:4eae:443b::1/64 dev ${parent}0
+ $ns ip addr add fdd4:96cf:4eae:443b::2/64 dev ${parent}1
+ fi
+}
+
+verify() {
+ local outer="$1"
+ local inner="$2"
+ local tos_ttl="$3"
+ local vlan="$4"
+
+ local ping_pid out captured_tos captured_ttl result
+
+ local ping_dst
+ if [ "$inner" = "4" ]; then
+ ping_dst="198.19.0.2"
+ elif [ "$inner" = "6" ]; then
+ ping_dst="fdd4:96cf:4eae:443b::2"
+ elif [ "$inner" = "other" ]; then
+ ping_dst="198.19.0.3" # Generates ARPs which are not IPv4/IPv6
+ fi
+ if [ "$tos_ttl" = "inherit" ]; then
+ ping -i 0.1 $ping_dst -Q "$expected_tos" -t "$expected_ttl" \
+ 2>/dev/null 1>&2 & ping_pid="$!"
+ else
+ ping -i 0.1 $ping_dst 2>/dev/null 1>&2 & ping_pid="$!"
+ fi
+ local tunnel_type_offset tunnel_type_proto req_proto_offset req_offset
+ if [ "$type" = "gre" ]; then
+ tunnel_type_proto="0x2f"
+ elif [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ tunnel_type_proto="0x11"
+ fi
+ if [ "$outer" = "4" ]; then
+ tunnel_type_offset="9"
+ if [ "$inner" = "4" ]; then
+ req_proto_offset="47"
+ req_offset="58"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 12))"
+ req_offset="$((req_offset + 12))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip[$req_proto_offset] = 0x01 and \
+ ip[$req_offset] = 0x08 2>/dev/null | head -n 1)"
+ elif [ "$inner" = "6" ]; then
+ req_proto_offset="44"
+ req_offset="78"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 12))"
+ req_offset="$((req_offset + 12))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip[$req_proto_offset] = 0x3a and \
+ ip[$req_offset] = 0x80 2>/dev/null | head -n 1)"
+ elif [ "$inner" = "other" ]; then
+ req_proto_offset="36"
+ req_offset="45"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 12))"
+ req_offset="$((req_offset + 12))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ if [ "$tos_ttl" = "inherit" ]; then
+ expected_tos="0x00"
+ expected_ttl="64"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip[$req_proto_offset] = 0x08 and \
+ ip[$((req_proto_offset + 1))] = 0x06 and \
+ ip[$req_offset] = 0x01 2>/dev/null | head -n 1)"
+ fi
+ elif [ "$outer" = "6" ]; then
+ if [ "$type" = "gre" ]; then
+ tunnel_type_offset="40"
+ elif [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ tunnel_type_offset="6"
+ fi
+ if [ "$inner" = "4" ]; then
+ local req_proto_offset="75"
+ local req_offset="86"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip6[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip6[$req_proto_offset] = 0x01 and \
+ ip6[$req_offset] = 0x08 2>/dev/null | head -n 1)"
+ elif [ "$inner" = "6" ]; then
+ local req_proto_offset="72"
+ local req_offset="106"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip6[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip6[$req_proto_offset] = 0x3a and \
+ ip6[$req_offset] = 0x80 2>/dev/null | head -n 1)"
+ elif [ "$inner" = "other" ]; then
+ local req_proto_offset="64"
+ local req_offset="73"
+ if [ "$type" = "vxlan" ] || [ "$type" = "geneve" ]; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ if $vlan; then
+ req_proto_offset="$((req_proto_offset + 4))"
+ req_offset="$((req_offset + 4))"
+ fi
+ if [ "$tos_ttl" = "inherit" ]; then
+ expected_tos="0x00"
+ expected_ttl="64"
+ fi
+ out="$(tcpdump --immediate-mode -p -c 1 -v -i veth0 -n \
+ ip6[$tunnel_type_offset] = $tunnel_type_proto and \
+ ip6[$req_proto_offset] = 0x08 and \
+ ip6[$((req_proto_offset + 1))] = 0x06 and \
+ ip6[$req_offset] = 0x01 2>/dev/null | head -n 1)"
+ fi
+ fi
+ kill -9 $ping_pid
+ wait $ping_pid 2>/dev/null
+ result="FAIL"
+ if [ "$outer" = "4" ]; then
+ captured_ttl="$(get_field "ttl" "$out")"
+ captured_tos="$(printf "0x%02x" "$(get_field "tos" "$out")")"
+ if [ "$captured_tos" = "$expected_tos" ] &&
+ [ "$captured_ttl" = "$expected_ttl" ]; then
+ result="OK"
+ fi
+ elif [ "$outer" = "6" ]; then
+ captured_ttl="$(get_field "hlim" "$out")"
+ captured_tos="$(printf "0x%02x" "$(get_field "class" "$out")")"
+ if [ "$captured_tos" = "$expected_tos" ] &&
+ [ "$captured_ttl" = "$expected_ttl" ]; then
+ result="OK"
+ fi
+ fi
+
+ printf "%7s │\n" "$result"
+ if [ "$result" = "FAIL" ]; then
+ failed=true
+ if [ "$captured_tos" != "$expected_tos" ]; then
+ printf "│%43s%27s │\n" \
+ "Expected TOS value: $expected_tos" \
+ "Captured TOS value: $captured_tos"
+ fi
+ if [ "$captured_ttl" != "$expected_ttl" ]; then
+ printf "│%43s%27s │\n" \
+ "Expected TTL value: $expected_ttl" \
+ "Captured TTL value: $captured_ttl"
+ fi
+ printf "│%71s│\n" " "
+ fi
+}
+
+cleanup() {
+ ip link del veth0 2>/dev/null
+ ip netns del testing 2>/dev/null
+ ip link del tep0 2>/dev/null
+}
+
+printf "┌────────┬───────┬───────┬──────────────┬"
+printf "──────────────┬───────┬────────┐\n"
+for type in gre vxlan geneve; do
+ if ! $(modprobe "$type" 2>/dev/null); then
+ continue
+ fi
+ for outer in 4 6; do
+ printf "├────────┼───────┼───────┼──────────────┼"
+ printf "──────────────┼───────┼────────┤\n"
+ printf "│ Type │ outer | inner │ tos │"
+ printf " ttl │ vlan │ result │\n"
+ for inner in 4 6 other; do
+ printf "├────────┼───────┼───────┼──────────────┼"
+ printf "──────────────┼───────┼────────┤\n"
+ for tos_ttl in inherit random; do
+ for vlan in false true; do
+ setup "$type" "$outer" "$inner" \
+ "$tos_ttl" "$vlan"
+ verify "$outer" "$inner" "$tos_ttl" \
+ "$vlan"
+ cleanup
+ done
+ done
+ done
+ done
+done
+printf "└────────┴───────┴───────┴──────────────┴"
+printf "──────────────┴───────┴────────┘\n"
+
+if $failed; then
+ exit 1
+fi
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index ff83ef426df5..2957fe414639 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -706,6 +706,7 @@ do_transfer()
addr_nr_ns1=${addr_nr_ns1:10}
fi
+ local flags="subflow"
if [[ "${addr_nr_ns2}" = "fastclose_"* ]]; then
# disconnect
extra_args="$extra_args -I ${addr_nr_ns2:10}"
@@ -713,6 +714,9 @@ do_transfer()
elif [[ "${addr_nr_ns2}" = "userspace_"* ]]; then
userspace_pm=1
addr_nr_ns2=${addr_nr_ns2:10}
+ elif [[ "${addr_nr_ns2}" = "fullmesh_"* ]]; then
+ flags="${flags},fullmesh"
+ addr_nr_ns2=${addr_nr_ns2:9}
fi
if [ $userspace_pm -eq 1 ]; then
@@ -832,12 +836,6 @@ do_transfer()
fi
fi
- local flags="subflow"
- if [[ "${addr_nr_ns2}" = "fullmesh_"* ]]; then
- flags="${flags},fullmesh"
- addr_nr_ns2=${addr_nr_ns2:9}
- fi
-
# if newly added endpoints must be deleted, give the background msk
# some time to created them
[ $addr_nr_ns1 -gt 0 ] && [ $addr_nr_ns2 -lt 0 ] && sleep 1
diff --git a/tools/testing/selftests/net/nettest.c b/tools/testing/selftests/net/nettest.c
index d9a6fd2cd9d3..7900fa98eccb 100644
--- a/tools/testing/selftests/net/nettest.c
+++ b/tools/testing/selftests/net/nettest.c
@@ -127,6 +127,9 @@ struct sock_args {
/* ESP in UDP encap test */
int use_xfrm;
+
+ /* use send() and connect() instead of sendto */
+ int datagram_connect;
};
static int server_mode;
@@ -979,6 +982,11 @@ static int send_msg(int sd, void *addr, socklen_t alen, struct sock_args *args)
log_err_errno("write failed sending msg to peer");
return 1;
}
+ } else if (args->datagram_connect) {
+ if (send(sd, msg, msglen, 0) < 0) {
+ log_err_errno("send failed sending msg to peer");
+ return 1;
+ }
} else if (args->ifindex && args->use_cmsg) {
if (send_msg_cmsg(sd, addr, alen, args->ifindex, args->version))
return 1;
@@ -1659,7 +1667,7 @@ static int connectsock(void *addr, socklen_t alen, struct sock_args *args)
if (args->has_local_ip && bind_socket(sd, args))
goto err;
- if (args->type != SOCK_STREAM)
+ if (args->type != SOCK_STREAM && !args->datagram_connect)
goto out;
if (args->password && tcp_md5sig(sd, addr, alen, args))
@@ -1854,7 +1862,7 @@ static int ipc_parent(int cpid, int fd, struct sock_args *args)
return client_status;
}
-#define GETOPT_STR "sr:l:c:p:t:g:P:DRn:M:X:m:d:I:BN:O:SCi6xL:0:1:2:3:Fbqf"
+#define GETOPT_STR "sr:l:c:p:t:g:P:DRn:M:X:m:d:I:BN:O:SUCi6xL:0:1:2:3:Fbqf"
#define OPT_FORCE_BIND_KEY_IFINDEX 1001
#define OPT_NO_BIND_KEY_IFINDEX 1002
@@ -1891,6 +1899,7 @@ static void print_usage(char *prog)
" -I dev bind socket to given device name - server mode\n"
" -S use setsockopt (IP_UNICAST_IF or IP_MULTICAST_IF)\n"
" to set device binding\n"
+ " -U Use connect() and send() for datagram sockets\n"
" -f bind socket with the IP[V6]_FREEBIND option\n"
" -C use cmsg and IP_PKTINFO to specify device binding\n"
"\n"
@@ -2074,6 +2083,9 @@ int main(int argc, char *argv[])
case 'x':
args.use_xfrm = 1;
break;
+ case 'U':
+ args.datagram_connect = 1;
+ break;
default:
print_usage(argv[0]);
return 1;
diff --git a/tools/testing/selftests/net/sk_bind_sendto_listen.c b/tools/testing/selftests/net/sk_bind_sendto_listen.c
new file mode 100644
index 000000000000..b420d830f72c
--- /dev/null
+++ b/tools/testing/selftests/net/sk_bind_sendto_listen.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <arpa/inet.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main(void)
+{
+ int fd1, fd2, one = 1;
+ struct sockaddr_in6 bind_addr = {
+ .sin6_family = AF_INET6,
+ .sin6_port = htons(20000),
+ .sin6_flowinfo = htonl(0),
+ .sin6_addr = {},
+ .sin6_scope_id = 0,
+ };
+
+ inet_pton(AF_INET6, "::", &bind_addr.sin6_addr);
+
+ fd1 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd1 < 0) {
+ error(1, errno, "socket fd1");
+ return -1;
+ }
+
+ if (setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd1");
+ goto out_err1;
+ }
+
+ if (bind(fd1, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd1");
+ goto out_err1;
+ }
+
+ if (sendto(fd1, NULL, 0, MSG_FASTOPEN, (struct sockaddr *)&bind_addr,
+ sizeof(bind_addr))) {
+ error(1, errno, "sendto fd1");
+ goto out_err1;
+ }
+
+ fd2 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd2 < 0) {
+ error(1, errno, "socket fd2");
+ goto out_err1;
+ }
+
+ if (setsockopt(fd2, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd2");
+ goto out_err2;
+ }
+
+ if (bind(fd2, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd2");
+ goto out_err2;
+ }
+
+ if (sendto(fd2, NULL, 0, MSG_FASTOPEN, (struct sockaddr *)&bind_addr,
+ sizeof(bind_addr)) != -1) {
+ error(1, errno, "sendto fd2");
+ goto out_err2;
+ }
+
+ if (listen(fd2, 0)) {
+ error(1, errno, "listen");
+ goto out_err2;
+ }
+
+ close(fd2);
+ close(fd1);
+ return 0;
+
+out_err2:
+ close(fd2);
+
+out_err1:
+ close(fd1);
+ return -1;
+}
diff --git a/tools/testing/selftests/net/sk_connect_zero_addr.c b/tools/testing/selftests/net/sk_connect_zero_addr.c
new file mode 100644
index 000000000000..4be418aefd9f
--- /dev/null
+++ b/tools/testing/selftests/net/sk_connect_zero_addr.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <arpa/inet.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main(void)
+{
+ int fd1, fd2, one = 1;
+ struct sockaddr_in6 bind_addr = {
+ .sin6_family = AF_INET6,
+ .sin6_port = htons(20000),
+ .sin6_flowinfo = htonl(0),
+ .sin6_addr = {},
+ .sin6_scope_id = 0,
+ };
+
+ inet_pton(AF_INET6, "::", &bind_addr.sin6_addr);
+
+ fd1 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd1 < 0) {
+ error(1, errno, "socket fd1");
+ return -1;
+ }
+
+ if (setsockopt(fd1, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))) {
+ error(1, errno, "setsockopt(SO_REUSEADDR) fd1");
+ goto out_err1;
+ }
+
+ if (bind(fd1, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd1");
+ goto out_err1;
+ }
+
+ if (listen(fd1, 0)) {
+ error(1, errno, "listen");
+ goto out_err1;
+ }
+
+ fd2 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (fd2 < 0) {
+ error(1, errno, "socket fd2");
+ goto out_err1;
+ }
+
+ if (connect(fd2, (struct sockaddr *)&bind_addr, sizeof(bind_addr))) {
+ error(1, errno, "bind fd2");
+ goto out_err2;
+ }
+
+ close(fd2);
+ close(fd1);
+ return 0;
+
+out_err2:
+ close(fd2);
+out_err1:
+ close(fd1);
+ return -1;
+}
diff --git a/tools/testing/selftests/net/srv6_end_next_csid_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_next_csid_l3vpn_test.sh
new file mode 100755
index 000000000000..87e414cc417c
--- /dev/null
+++ b/tools/testing/selftests/net/srv6_end_next_csid_l3vpn_test.sh
@@ -0,0 +1,1145 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# author: Andrea Mayer <andrea.mayer@uniroma2.it>
+#
+# This script is designed for testing the support of NEXT-C-SID flavor for SRv6
+# End behavior.
+# A basic knowledge of SRv6 architecture [1] and of the compressed SID approach
+# [2] is assumed for the reader.
+#
+# The network topology used in the selftest is depicted hereafter, composed by
+# two hosts and four routers. Hosts hs-1 and hs-2 are connected through an
+# IPv4/IPv6 L3 VPN service, offered by routers rt-1, rt-2, rt-3 and rt-4 using
+# the NEXT-C-SID flavor. The key components for such VPNs are:
+#
+# i) The SRv6 H.Encaps/H.Encaps.Red behaviors [1] apply SRv6 Policies on
+# traffic received by connected hosts, initiating the VPN tunnel;
+#
+# ii) The SRv6 End behavior [1] advances the active SID in the SID List
+# carried by the SRH;
+#
+# iii) The NEXT-C-SID mechanism [2] offers the possibility of encoding several
+# SRv6 segments within a single 128-bit SID address, referred to as a
+# Compressed SID (C-SID) container. In this way, the length of the SID
+# List can be drastically reduced.
+# The NEXT-C-SID is provided as a "flavor" of the SRv6 End behavior
+# which advances the current C-SID (i.e. the Locator-Node Function defined
+# in [2]) with the next one carried in the Argument, if available.
+# When no more C-SIDs are available in the Argument, the SRv6 End behavior
+# will apply the End function selecting the next SID in the SID List.
+#
+# iv) The SRv6 End.DT46 behavior [1] is used for removing the SRv6 Policy and,
+# thus, it terminates the VPN tunnel. Such a behavior is capable of
+# handling, at the same time, both tunneled IPv4 and IPv6 traffic.
+#
+# [1] https://datatracker.ietf.org/doc/html/rfc8986
+# [2] https://datatracker.ietf.org/doc/html/draft-ietf-spring-srv6-srh-compression
+#
+#
+# cafe::1 cafe::2
+# 10.0.0.1 10.0.0.2
+# +--------+ +--------+
+# | | | |
+# | hs-1 | | hs-2 |
+# | | | |
+# +---+----+ +----+---+
+# cafe::/64 | | cafe::/64
+# 10.0.0.0/24 | | 10.0.0.0/24
+# +---+----+ +----+---+
+# | | fcf0:0:1:2::/64 | |
+# | rt-1 +-------------------+ rt-2 |
+# | | | |
+# +---+----+ +----+---+
+# | . . |
+# | fcf0:0:1:3::/64 . |
+# | . . |
+# | . . |
+# fcf0:0:1:4::/64 | . | fcf0:0:2:3::/64
+# | . . |
+# | . . |
+# | fcf0:0:2:4::/64 . |
+# | . . |
+# +---+----+ +----+---+
+# | | | |
+# | rt-4 +-------------------+ rt-3 |
+# | | fcf0:0:3:4::/64 | |
+# +---+----+ +----+---+
+#
+# Every fcf0:0:x:y::/64 network interconnects the SRv6 routers rt-x with rt-y in
+# the selftest network.
+#
+# Local SID/C-SID table
+# =====================
+#
+# Each SRv6 router is configured with a Local SID/C-SID table in which
+# SIDs/C-SIDs are stored. Considering an SRv6 router rt-x, SIDs/C-SIDs are
+# configured in the Local SID/C-SIDs table as follows:
+#
+# Local SID/C-SID table for SRv6 router rt-x
+# +-----------------------------------------------------------+
+# |fcff:x::d46 is associated with the non-compressed SRv6 |
+# | End.DT46 behavior |
+# +-----------------------------------------------------------+
+# |fcbb:0:0x00::/48 is associated with the NEXT-C-SID flavor |
+# | of SRv6 End behavior |
+# +-----------------------------------------------------------+
+# |fcbb:0:0x00:d46::/64 is associated with the SRv6 End.DT46 |
+# | behavior when NEXT-C-SID compression is turned on |
+# +-----------------------------------------------------------+
+#
+# The fcff::/16 prefix is reserved for implementing SRv6 services with regular
+# (non compressed) SIDs. Reachability of SIDs is ensured by proper configuration
+# of the IPv6 routing tables in the routers.
+# Similarly, the fcbb:0::/32 prefix is reserved for implementing SRv6 VPN
+# services leveraging the NEXT-C-SID compression mechanism. Indeed, the
+# fcbb:0::/32 is used for encoding the Locator-Block while the Locator-Node
+# Function is encoded with 16 bits.
+#
+# Incoming traffic classification and application of SRv6 Policies
+# ================================================================
+#
+# An SRv6 ingress router applies different SRv6 Policies to the traffic received
+# from a connected host, considering the IPv4 or IPv6 destination address.
+# SRv6 policy enforcement consists of encapsulating the received traffic into a
+# new IPv6 packet with a given SID List contained in the SRH.
+# When the SID List contains only one SID, the SRH could be omitted completely
+# and that SID is stored directly in the IPv6 Destination Address (DA) (this is
+# called "reduced" encapsulation).
+#
+# Test cases for NEXT-C-SID
+# =========================
+#
+# We consider two test cases for NEXT-C-SID: i) single SID and ii) double SID.
+#
+# In the single SID test case we have a number of segments that are all
+# contained in a single Compressed SID (C-SID) container. Therefore the
+# resulting SID List has only one SID. Using the reduced encapsulation format
+# this will result in a packet with no SRH.
+#
+# In the double SID test case we have one segment carried in a Compressed SID
+# (C-SID) container, followed by a regular (non compressed) SID. The resulting
+# SID List has two segments and it is possible to test the advance to the next
+# SID when all the C-SIDs in a C-SID container have been processed. Using the
+# reduced encapsulation format this will result in a packet with an SRH
+# containing 1 segment.
+#
+# For the single SID test case, we use the IPv4 addresses of hs-1 and hs-2, for
+# the double SID test case, we use their IPv6 addresses. This is only done to
+# simplify the test setup and avoid adding other hosts or multiple addresses on
+# the same interface of a host.
+#
+# Traffic from hs-1 to hs-2
+# -------------------------
+#
+# Packets generated from hs-1 and directed towards hs-2 are handled by rt-1
+# which applies the SRv6 Policies as follows:
+#
+# i) IPv6 DA=cafe::2, H.Encaps.Red with SID List=fcbb:0:0400:0300:0200:d46::
+# ii) IPv4 DA=10.0.0.2, H.Encaps.Red with SID List=fcbb:0:0300::,fcff:2::d46
+#
+# ### i) single SID
+#
+# The router rt-1 is configured to enforce the given Policy through the SRv6
+# H.Encaps.Red behavior which avoids the presence of the SRH at all, since it
+# pushes the single SID directly in the IPv6 DA. Such a SID encodes a whole
+# C-SID container carrying several C-SIDs (e.g. 0400, 0300, etc).
+#
+# As the packet reaches the router rt-4, the enabled NEXT-C-SID SRv6 End
+# behavior (associated with fcbb:0:0400::/48) is triggered. This behavior
+# analyzes the IPv6 DA and checks whether the Argument of the C-SID container
+# is zero or not. In this case, the Argument is *NOT* zero and the IPv6 DA is
+# updated as follows:
+#
+# +---------------------------------------------------------------+
+# | Before applying the rt-4 enabled NEXT-C-SID SRv6 End behavior |
+# +---------------------------------------------------------------+
+# | +---------- Argument |
+# | vvvvvvvvvvvvvvvv |
+# | IPv6 DA fcbb:0:0400:0300:0200:d46:: |
+# | ^^^^ <-- shifting |
+# | | |
+# | Locator-Node Function |
+# +---------------------------------------------------------------+
+# | After applying the rt-4 enabled NEXT-C-SID SRv6 End behavior |
+# +---------------------------------------------------------------+
+# | +---------- Argument |
+# | vvvvvvvvvvvv |
+# | IPv6 DA fcbb:0:0300:0200:d46:: |
+# | ^^^^ |
+# | | |
+# | Locator-Node Function |
+# +---------------------------------------------------------------+
+#
+# After having applied the enabled NEXT-C-SID SRv6 End behavior, the packet is
+# sent to the next node, i.e. rt-3.
+#
+# The enabled NEXT-C-SID SRv6 End behavior on rt-3 is executed as the packet is
+# received. This behavior processes the packet and updates the IPv6 DA with
+# fcbb:0:0200:d46::, since the Argument is *NOT* zero. Then, the packet is sent
+# to the router rt-2.
+#
+# The router rt-2 is configured for decapsulating the inner IPv6 packet and,
+# for this reason, it applies the SRv6 End.DT46 behavior on the received
+# packet. It is worth noting that the SRv6 End.DT46 behavior does not require
+# the presence of the SRH: it is fully capable to operate properly on
+# IPv4/IPv6-in-IPv6 encapsulations.
+# At the end of the decap operation, the packet is sent to the
+# host hs-2.
+#
+# ### ii) double SID
+#
+# The router rt-1 is configured to enforce the given Policy through the SRv6
+# H.Encaps.Red. As a result, the first SID fcbb:0:0300:: is stored into the
+# IPv6 DA, while the SRH pushed into the packet is made of only one SID, i.e.
+# fcff:2::d46. Hence, the packet sent by hs-1 to hs-2 is encapsulated in an
+# outer IPv6 header plus the SRH.
+#
+# As the packet reaches the node rt-3, the router applies the enabled NEXT-C-SID
+# SRv6 End behavior.
+#
+# +---------------------------------------------------------------+
+# | Before applying the rt-3 enabled NEXT-C-SID SRv6 End behavior |
+# +---------------------------------------------------------------+
+# | +---------- Argument |
+# | vvvv (Argument is all filled with zeros) |
+# | IPv6 DA fcbb:0:0300:: |
+# | ^^^^ |
+# | | |
+# | Locator-Node Function |
+# +---------------------------------------------------------------+
+# | After applying the rt-3 enabled NEXT-C-SID SRv6 End behavior |
+# +---------------------------------------------------------------+
+# | |
+# | IPv6 DA fcff:2::d46 |
+# | ^^^^^^^^^^^ |
+# | | |
+# | SID copied from the SID List contained in the SRH |
+# +---------------------------------------------------------------+
+#
+# Since the Argument of the C-SID container is zero, the behavior can not
+# update the Locator-Node function with the next C-SID carried in the Argument
+# itself. Thus, the enabled NEXT-C-SID SRv6 End behavior operates as the
+# traditional End behavior: it updates the IPv6 DA by copying the next
+# available SID in the SID List carried by the SRH. After that, the packet is
+# sent to the node rt-2.
+#
+# Once the packet is received by rt-2, the router decapsulates the inner IPv6
+# packet using the SRv6 End.DT46 behavior (associated with the SID fcff:2::d46)
+# and sends it to the host hs-2.
+#
+# Traffic from hs-2 to hs-1
+# -------------------------
+#
+# Packets generated from hs-2 and directed towards hs-1 are handled by rt-2
+# which applies the SRv6 Policies as follows:
+#
+# i) IPv6 DA=cafe::1, SID List=fcbb:0:0300:0400:0100:d46::
+# ii) IPv4 DA=10.0.0.1, SID List=fcbb:0:0300::,fcff:1::d46
+#
+# For simplicity, such SRv6 Policies were chosen so that, in both use cases (i)
+# and (ii), the network paths crossed by traffic from hs-2 to hs-1 are the same
+# as those taken by traffic from hs-1 to hs-2.
+# In this way, traffic from hs-2 to hs-1 is processed similarly to traffic from
+# hs-1 to hs-2. So, the traffic processing scheme turns out to be the same as
+# that adopted in the use cases already examined (of course, it is necessary to
+# consider the different SIDs/C-SIDs).
+
+# Kselftest framework requirement - SKIP code is 4.
+readonly ksft_skip=4
+
+readonly RDMSUFF="$(mktemp -u XXXXXXXX)"
+readonly DUMMY_DEVNAME="dum0"
+readonly VRF_TID=100
+readonly VRF_DEVNAME="vrf-${VRF_TID}"
+readonly RT2HS_DEVNAME="veth-t${VRF_TID}"
+readonly LOCALSID_TABLE_ID=90
+readonly IPv6_RT_NETWORK=fcf0:0
+readonly IPv6_HS_NETWORK=cafe
+readonly IPv4_HS_NETWORK=10.0.0
+readonly VPN_LOCATOR_SERVICE=fcff
+readonly DT46_FUNC=0d46
+readonly HEADEND_ENCAP="encap.red"
+
+# do not add ':' as separator
+readonly LCBLOCK_ADDR=fcbb0000
+readonly LCBLOCK_BLEN=32
+# do not add ':' as separator
+readonly LCNODEFUNC_FMT="0%d00"
+readonly LCNODEFUNC_BLEN=16
+
+readonly LCBLOCK_NODEFUNC_BLEN=$((LCBLOCK_BLEN + LCNODEFUNC_BLEN))
+
+readonly CSID_CNTR_PREFIX="dead:beaf::/32"
+# ID of the router used for testing the C-SID container cfgs
+readonly CSID_CNTR_RT_ID_TEST=1
+# Routing table used for testing the C-SID container cfgs
+readonly CSID_CNTR_RT_TABLE=91
+
+# C-SID container configurations to be tested
+#
+# An entry of the array is defined as "a,b,c" where:
+# - 'a' and 'b' elements represent respectively the Locator-Block length
+# (lblen) in bits and the Locator-Node Function length (nflen) in bits.
+# 'a' and 'b' can be set to default values using the placeholder "d" which
+# indicates the default kernel values (32 for lblen and 16 for nflen);
+# otherwise, any numeric value is accepted;
+# - 'c' indicates whether the C-SID configuration provided by the values 'a'
+# and 'b' should be considered valid ("y") or invalid ("n").
+declare -ra CSID_CONTAINER_CFGS=(
+ "d,d,y"
+ "d,16,y"
+ "16,d,y"
+ "16,32,y"
+ "32,16,y"
+ "48,8,y"
+ "8,48,y"
+ "d,0,n"
+ "0,d,n"
+ "32,0,n"
+ "0,32,n"
+ "17,d,n"
+ "d,17,n"
+ "120,16,n"
+ "16,120,n"
+ "0,128,n"
+ "128,0,n"
+ "130,0,n"
+ "0,130,n"
+ "0,0,n"
+)
+
+PING_TIMEOUT_SEC=4
+PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
+
+# IDs of routers and hosts are initialized during the setup of the testing
+# network
+ROUTERS=''
+HOSTS=''
+
+SETUP_ERR=1
+
+ret=${ksft_skip}
+nsuccess=0
+nfail=0
+
+log_test()
+{
+ local rc="$1"
+ local expected="$2"
+ local msg="$3"
+
+ if [ "${rc}" -eq "${expected}" ]; then
+ nsuccess=$((nsuccess+1))
+ printf "\n TEST: %-60s [ OK ]\n" "${msg}"
+ else
+ ret=1
+ nfail=$((nfail+1))
+ printf "\n TEST: %-60s [FAIL]\n" "${msg}"
+ if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
+ echo
+ echo "hit enter to continue, 'q' to quit"
+ read a
+ [ "$a" = "q" ] && exit 1
+ fi
+ fi
+}
+
+print_log_test_results()
+{
+ printf "\nTests passed: %3d\n" "${nsuccess}"
+ printf "Tests failed: %3d\n" "${nfail}"
+
+ # when a test fails, the value of 'ret' is set to 1 (error code).
+ # Conversely, when all tests are passed successfully, the 'ret' value
+ # is set to 0 (success code).
+ if [ "${ret}" -ne 1 ]; then
+ ret=0
+ fi
+}
+
+log_section()
+{
+ echo
+ echo "################################################################################"
+ echo "TEST SECTION: $*"
+ echo "################################################################################"
+}
+
+test_command_or_ksft_skip()
+{
+ local cmd="$1"
+
+ if [ ! -x "$(command -v "${cmd}")" ]; then
+ echo "SKIP: Could not run test without \"${cmd}\" tool";
+ exit "${ksft_skip}"
+ fi
+}
+
+get_nodename()
+{
+ local name="$1"
+
+ echo "${name}-${RDMSUFF}"
+}
+
+get_rtname()
+{
+ local rtid="$1"
+
+ get_nodename "rt-${rtid}"
+}
+
+get_hsname()
+{
+ local hsid="$1"
+
+ get_nodename "hs-${hsid}"
+}
+
+__create_namespace()
+{
+ local name="$1"
+
+ ip netns add "${name}"
+}
+
+create_router()
+{
+ local rtid="$1"
+ local nsname
+
+ nsname="$(get_rtname "${rtid}")"
+
+ __create_namespace "${nsname}"
+}
+
+create_host()
+{
+ local hsid="$1"
+ local nsname
+
+ nsname="$(get_hsname "${hsid}")"
+
+ __create_namespace "${nsname}"
+}
+
+cleanup()
+{
+ local nsname
+ local i
+
+ # destroy routers
+ for i in ${ROUTERS}; do
+ nsname="$(get_rtname "${i}")"
+
+ ip netns del "${nsname}" &>/dev/null || true
+ done
+
+ # destroy hosts
+ for i in ${HOSTS}; do
+ nsname="$(get_hsname "${i}")"
+
+ ip netns del "${nsname}" &>/dev/null || true
+ done
+
+ # check whether the setup phase was completed successfully or not. In
+ # case of an error during the setup phase of the testing environment,
+ # the selftest is considered as "skipped".
+ if [ "${SETUP_ERR}" -ne 0 ]; then
+ echo "SKIP: Setting up the testing environment failed"
+ exit "${ksft_skip}"
+ fi
+
+ exit "${ret}"
+}
+
+add_link_rt_pairs()
+{
+ local rt="$1"
+ local rt_neighs="$2"
+ local neigh
+ local nsname
+ local neigh_nsname
+
+ nsname="$(get_rtname "${rt}")"
+
+ for neigh in ${rt_neighs}; do
+ neigh_nsname="$(get_rtname "${neigh}")"
+
+ ip link add "veth-rt-${rt}-${neigh}" netns "${nsname}" \
+ type veth peer name "veth-rt-${neigh}-${rt}" \
+ netns "${neigh_nsname}"
+ done
+}
+
+get_network_prefix()
+{
+ local rt="$1"
+ local neigh="$2"
+ local p="${rt}"
+ local q="${neigh}"
+
+ if [ "${p}" -gt "${q}" ]; then
+ p="${q}"; q="${rt}"
+ fi
+
+ echo "${IPv6_RT_NETWORK}:${p}:${q}"
+}
+
+# Setup the basic networking for the routers
+setup_rt_networking()
+{
+ local rt="$1"
+ local rt_neighs="$2"
+ local nsname
+ local net_prefix
+ local devname
+ local neigh
+
+ nsname="$(get_rtname "${rt}")"
+
+ for neigh in ${rt_neighs}; do
+ devname="veth-rt-${rt}-${neigh}"
+
+ net_prefix="$(get_network_prefix "${rt}" "${neigh}")"
+
+ ip -netns "${nsname}" addr \
+ add "${net_prefix}::${rt}/64" dev "${devname}" nodad
+
+ ip -netns "${nsname}" link set "${devname}" up
+ done
+
+ ip -netns "${nsname}" link add "${DUMMY_DEVNAME}" type dummy
+
+ ip -netns "${nsname}" link set "${DUMMY_DEVNAME}" up
+ ip -netns "${nsname}" link set lo up
+
+ ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.all.accept_dad=0
+ ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.default.accept_dad=0
+ ip netns exec "${nsname}" sysctl -wq net.ipv6.conf.all.forwarding=1
+
+ ip netns exec "${nsname}" sysctl -wq net.ipv4.conf.all.rp_filter=0
+ ip netns exec "${nsname}" sysctl -wq net.ipv4.conf.default.rp_filter=0
+ ip netns exec "${nsname}" sysctl -wq net.ipv4.ip_forward=1
+}
+
+# build an ipv6 prefix/address based on the input string
+# Note that the input string does not contain ':' and '::' which are considered
+# to be implicit.
+# e.g.:
+# - input: fbcc00000400300
+# - output: fbcc:0000:0400:0300:0000:0000:0000:0000
+# ^^^^^^^^^^^^^^^^^^^
+# fill the address with 0s
+build_ipv6_addr()
+{
+ local addr="$1"
+ local out=""
+ local strlen="${#addr}"
+ local padn
+ local i
+
+ # add ":" every 4 digits (16 bits)
+ for (( i = 0; i < strlen; i++ )); do
+ if (( i > 0 && i < 32 && (i % 4) == 0 )); then
+ out="${out}:"
+ fi
+
+ out="${out}${addr:$i:1}"
+ done
+
+ # fill the remaining bits of the address with 0s
+ padn=$((32 - strlen))
+ for (( i = padn; i > 0; i-- )); do
+ if (( i > 0 && i < 32 && (i % 4) == 0 )); then
+ out="${out}:"
+ fi
+
+ out="${out}0"
+ done
+
+ printf "${out}"
+}
+
+build_csid()
+{
+ local nodeid="$1"
+
+ printf "${LCNODEFUNC_FMT}" "${nodeid}"
+}
+
+build_lcnode_func_prefix()
+{
+ local nodeid="$1"
+ local lcnodefunc
+ local prefix
+ local out
+
+ lcnodefunc="$(build_csid "${nodeid}")"
+ prefix="$(build_ipv6_addr "${LCBLOCK_ADDR}${lcnodefunc}")"
+
+ out="${prefix}/${LCBLOCK_NODEFUNC_BLEN}"
+
+ echo "${out}"
+}
+
+# Setup local SIDs for an SRv6 router
+setup_rt_local_sids()
+{
+ local rt="$1"
+ local rt_neighs="$2"
+ local net_prefix
+ local devname
+ local nsname
+ local neigh
+ local lcnode_func_prefix
+ local lcblock_prefix
+
+ nsname="$(get_rtname "${rt}")"
+
+ for neigh in ${rt_neighs}; do
+ devname="veth-rt-${rt}-${neigh}"
+
+ net_prefix="$(get_network_prefix "${rt}" "${neigh}")"
+
+ # set underlay network routes for SIDs reachability
+ ip -netns "${nsname}" -6 route \
+ add "${VPN_LOCATOR_SERVICE}:${neigh}::/32" \
+ table "${LOCALSID_TABLE_ID}" \
+ via "${net_prefix}::${neigh}" dev "${devname}"
+
+ # set the underlay network for C-SIDs reachability
+ lcnode_func_prefix="$(build_lcnode_func_prefix "${neigh}")"
+
+ ip -netns "${nsname}" -6 route \
+ add "${lcnode_func_prefix}" \
+ table "${LOCALSID_TABLE_ID}" \
+ via "${net_prefix}::${neigh}" dev "${devname}"
+ done
+
+ lcnode_func_prefix="$(build_lcnode_func_prefix "${rt}")"
+
+ # enabled NEXT-C-SID SRv6 End behavior (note that "dev" is the dummy
+ # dum0 device chosen for the sake of simplicity).
+ ip -netns "${nsname}" -6 route \
+ add "${lcnode_func_prefix}" \
+ table "${LOCALSID_TABLE_ID}" \
+ encap seg6local action End flavors next-csid \
+ lblen "${LCBLOCK_BLEN}" nflen "${LCNODEFUNC_BLEN}" \
+ dev "${DUMMY_DEVNAME}"
+
+ # all SIDs for VPNs start with a common locator. Routes and SRv6
+ # Endpoint behavior instaces are grouped together in the 'localsid'
+ # table.
+ ip -netns "${nsname}" -6 rule \
+ add to "${VPN_LOCATOR_SERVICE}::/16" \
+ lookup "${LOCALSID_TABLE_ID}" prio 999
+
+ # common locator block for NEXT-C-SIDS compression mechanism.
+ lcblock_prefix="$(build_ipv6_addr "${LCBLOCK_ADDR}")"
+ ip -netns "${nsname}" -6 rule \
+ add to "${lcblock_prefix}/${LCBLOCK_BLEN}" \
+ lookup "${LOCALSID_TABLE_ID}" prio 999
+}
+
+# build and install the SRv6 policy into the ingress SRv6 router as well as the
+# decap SID in the egress one.
+# args:
+# $1 - src host (evaluate automatically the ingress router)
+# $2 - dst host (evaluate automatically the egress router)
+# $3 - SRv6 routers configured for steering traffic (End behaviors)
+# $4 - single SID or double SID
+# $5 - traffic type (IPv6 or IPv4)
+__setup_l3vpn()
+{
+ local src="$1"
+ local dst="$2"
+ local end_rts="$3"
+ local mode="$4"
+ local traffic="$5"
+ local nsname
+ local policy
+ local container
+ local decapsid
+ local lcnfunc
+ local dt
+ local n
+ local rtsrc_nsname
+ local rtdst_nsname
+
+ rtsrc_nsname="$(get_rtname "${src}")"
+ rtdst_nsname="$(get_rtname "${dst}")"
+
+ container="${LCBLOCK_ADDR}"
+
+ # build first SID (C-SID container)
+ for n in ${end_rts}; do
+ lcnfunc="$(build_csid "${n}")"
+
+ container="${container}${lcnfunc}"
+ done
+
+ if [ "${mode}" -eq 1 ]; then
+ # single SID policy
+ dt="$(build_csid "${dst}")${DT46_FUNC}"
+ container="${container}${dt}"
+ # build the full ipv6 address for the container
+ policy="$(build_ipv6_addr "${container}")"
+
+ # build the decap SID used in the decap node
+ container="${LCBLOCK_ADDR}${dt}"
+ decapsid="$(build_ipv6_addr "${container}")"
+ else
+ # double SID policy
+ decapsid="${VPN_LOCATOR_SERVICE}:${dst}::${DT46_FUNC}"
+
+ policy="$(build_ipv6_addr "${container}"),${decapsid}"
+ fi
+
+ # apply encap policy
+ if [ "${traffic}" -eq 6 ]; then
+ ip -netns "${rtsrc_nsname}" -6 route \
+ add "${IPv6_HS_NETWORK}::${dst}" vrf "${VRF_DEVNAME}" \
+ encap seg6 mode "${HEADEND_ENCAP}" segs "${policy}" \
+ dev "${VRF_DEVNAME}"
+
+ ip -netns "${rtsrc_nsname}" -6 neigh \
+ add proxy "${IPv6_HS_NETWORK}::${dst}" \
+ dev "${RT2HS_DEVNAME}"
+ else
+ # "dev" must be different from the one where the packet is
+ # received, otherwise the proxy arp does not work.
+ ip -netns "${rtsrc_nsname}" -4 route \
+ add "${IPv4_HS_NETWORK}.${dst}" vrf "${VRF_DEVNAME}" \
+ encap seg6 mode "${HEADEND_ENCAP}" segs "${policy}" \
+ dev "${VRF_DEVNAME}"
+ fi
+
+ # apply decap
+ # Local End.DT46 behavior (decap)
+ ip -netns "${rtdst_nsname}" -6 route \
+ add "${decapsid}" \
+ table "${LOCALSID_TABLE_ID}" \
+ encap seg6local action End.DT46 vrftable "${VRF_TID}" \
+ dev "${VRF_DEVNAME}"
+}
+
+# see __setup_l3vpn()
+setup_ipv4_vpn_2sids()
+{
+ __setup_l3vpn "$1" "$2" "$3" 2 4
+}
+
+# see __setup_l3vpn()
+setup_ipv6_vpn_1sid()
+{
+ __setup_l3vpn "$1" "$2" "$3" 1 6
+}
+
+setup_hs()
+{
+ local hs="$1"
+ local rt="$2"
+ local hsname
+ local rtname
+
+ hsname="$(get_hsname "${hs}")"
+ rtname="$(get_rtname "${rt}")"
+
+ ip netns exec "${hsname}" sysctl -wq net.ipv6.conf.all.accept_dad=0
+ ip netns exec "${hsname}" sysctl -wq net.ipv6.conf.default.accept_dad=0
+
+ ip -netns "${hsname}" link add veth0 type veth \
+ peer name "${RT2HS_DEVNAME}" netns "${rtname}"
+
+ ip -netns "${hsname}" addr \
+ add "${IPv6_HS_NETWORK}::${hs}/64" dev veth0 nodad
+ ip -netns "${hsname}" addr add "${IPv4_HS_NETWORK}.${hs}/24" dev veth0
+
+ ip -netns "${hsname}" link set veth0 up
+ ip -netns "${hsname}" link set lo up
+
+ # configure the VRF on the router which is directly connected to the
+ # source host.
+ ip -netns "${rtname}" link \
+ add "${VRF_DEVNAME}" type vrf table "${VRF_TID}"
+ ip -netns "${rtname}" link set "${VRF_DEVNAME}" up
+
+ # enslave the veth interface connecting the router with the host to the
+ # VRF in the access router
+ ip -netns "${rtname}" link \
+ set "${RT2HS_DEVNAME}" master "${VRF_DEVNAME}"
+
+ # set default routes to unreachable for both ipv6 and ipv4
+ ip -netns "${rtname}" -6 route \
+ add unreachable default metric 4278198272 \
+ vrf "${VRF_DEVNAME}"
+ ip -netns "${rtname}" -4 route \
+ add unreachable default metric 4278198272 \
+ vrf "${VRF_DEVNAME}"
+
+ ip -netns "${rtname}" addr \
+ add "${IPv6_HS_NETWORK}::254/64" dev "${RT2HS_DEVNAME}" nodad
+ ip -netns "${rtname}" addr \
+ add "${IPv4_HS_NETWORK}.254/24" dev "${RT2HS_DEVNAME}"
+
+ ip -netns "${rtname}" link set "${RT2HS_DEVNAME}" up
+
+ ip netns exec "${rtname}" \
+ sysctl -wq net.ipv6.conf."${RT2HS_DEVNAME}".proxy_ndp=1
+ ip netns exec "${rtname}" \
+ sysctl -wq net.ipv4.conf."${RT2HS_DEVNAME}".proxy_arp=1
+
+ # disable the rp_filter otherwise the kernel gets confused about how
+ # to route decap ipv4 packets.
+ ip netns exec "${rtname}" \
+ sysctl -wq net.ipv4.conf."${RT2HS_DEVNAME}".rp_filter=0
+
+ ip netns exec "${rtname}" sh -c "echo 1 > /proc/sys/net/vrf/strict_mode"
+}
+
+setup()
+{
+ local i
+
+ # create routers
+ ROUTERS="1 2 3 4"; readonly ROUTERS
+ for i in ${ROUTERS}; do
+ create_router "${i}"
+ done
+
+ # create hosts
+ HOSTS="1 2"; readonly HOSTS
+ for i in ${HOSTS}; do
+ create_host "${i}"
+ done
+
+ # set up the links for connecting routers
+ add_link_rt_pairs 1 "2 3 4"
+ add_link_rt_pairs 2 "3 4"
+ add_link_rt_pairs 3 "4"
+
+ # set up the basic connectivity of routers and routes required for
+ # reachability of SIDs.
+ setup_rt_networking 1 "2 3 4"
+ setup_rt_networking 2 "1 3 4"
+ setup_rt_networking 3 "1 2 4"
+ setup_rt_networking 4 "1 2 3"
+
+ # set up the hosts connected to routers
+ setup_hs 1 1
+ setup_hs 2 2
+
+ # set up default SRv6 Endpoints (i.e. SRv6 End and SRv6 End.DT46)
+ setup_rt_local_sids 1 "2 3 4"
+ setup_rt_local_sids 2 "1 3 4"
+ setup_rt_local_sids 3 "1 2 4"
+ setup_rt_local_sids 4 "1 2 3"
+
+ # set up SRv6 Policies
+
+ # create an IPv6 VPN between hosts hs-1 and hs-2.
+ #
+ # Direction hs-1 -> hs-2
+ # - rt-1 encap (H.Encaps.Red)
+ # - rt-4 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-3 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-2 SRv6 End.DT46 behavior
+ setup_ipv6_vpn_1sid 1 2 "4 3"
+
+ # Direction hs2 -> hs-1
+ # - rt-2 encap (H.Encaps.Red)
+ # - rt-3 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-4 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-1 SRv6 End.DT46 behavior
+ setup_ipv6_vpn_1sid 2 1 "3 4"
+
+ # create an IPv4 VPN between hosts hs-1 and hs-2
+ #
+ # Direction hs-1 -> hs-2
+ # - rt-1 encap (H.Encaps.Red)
+ # - rt-3 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-2 SRv6 End.DT46 behavior
+ setup_ipv4_vpn_2sids 1 2 "3"
+
+ # Direction hs-2 -> hs-1
+ # - rt-2 encap (H.Encaps.Red)
+ # - rt-3 SRv6 End behavior (NEXT-C-SID flavor)
+ # - rt-1 SRv6 End.DT46 behavior
+ setup_ipv4_vpn_2sids 2 1 "3"
+
+ # testing environment was set up successfully
+ SETUP_ERR=0
+}
+
+check_rt_connectivity()
+{
+ local rtsrc="$1"
+ local rtdst="$2"
+ local prefix
+ local rtsrc_nsname
+
+ rtsrc_nsname="$(get_rtname "${rtsrc}")"
+
+ prefix="$(get_network_prefix "${rtsrc}" "${rtdst}")"
+
+ ip netns exec "${rtsrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \
+ "${prefix}::${rtdst}" >/dev/null 2>&1
+}
+
+check_and_log_rt_connectivity()
+{
+ local rtsrc="$1"
+ local rtdst="$2"
+
+ check_rt_connectivity "${rtsrc}" "${rtdst}"
+ log_test $? 0 "Routers connectivity: rt-${rtsrc} -> rt-${rtdst}"
+}
+
+check_hs_ipv6_connectivity()
+{
+ local hssrc="$1"
+ local hsdst="$2"
+ local hssrc_nsname
+
+ hssrc_nsname="$(get_hsname "${hssrc}")"
+
+ ip netns exec "${hssrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \
+ "${IPv6_HS_NETWORK}::${hsdst}" >/dev/null 2>&1
+}
+
+check_hs_ipv4_connectivity()
+{
+ local hssrc="$1"
+ local hsdst="$2"
+ local hssrc_nsname
+
+ hssrc_nsname="$(get_hsname "${hssrc}")"
+
+ ip netns exec "${hssrc_nsname}" ping -c 1 -W "${PING_TIMEOUT_SEC}" \
+ "${IPv4_HS_NETWORK}.${hsdst}" >/dev/null 2>&1
+}
+
+check_and_log_hs2gw_connectivity()
+{
+ local hssrc="$1"
+
+ check_hs_ipv6_connectivity "${hssrc}" 254
+ log_test $? 0 "IPv6 Hosts connectivity: hs-${hssrc} -> gw"
+
+ check_hs_ipv4_connectivity "${hssrc}" 254
+ log_test $? 0 "IPv4 Hosts connectivity: hs-${hssrc} -> gw"
+}
+
+check_and_log_hs_ipv6_connectivity()
+{
+ local hssrc="$1"
+ local hsdst="$2"
+
+ check_hs_ipv6_connectivity "${hssrc}" "${hsdst}"
+ log_test $? 0 "IPv6 Hosts connectivity: hs-${hssrc} -> hs-${hsdst}"
+}
+
+check_and_log_hs_ipv4_connectivity()
+{
+ local hssrc="$1"
+ local hsdst="$2"
+
+ check_hs_ipv4_connectivity "${hssrc}" "${hsdst}"
+ log_test $? 0 "IPv4 Hosts connectivity: hs-${hssrc} -> hs-${hsdst}"
+}
+
+router_tests()
+{
+ local i
+ local j
+
+ log_section "IPv6 routers connectivity test"
+
+ for i in ${ROUTERS}; do
+ for j in ${ROUTERS}; do
+ if [ "${i}" -eq "${j}" ]; then
+ continue
+ fi
+
+ check_and_log_rt_connectivity "${i}" "${j}"
+ done
+ done
+}
+
+host2gateway_tests()
+{
+ local hs
+
+ log_section "IPv4/IPv6 connectivity test among hosts and gateways"
+
+ for hs in ${HOSTS}; do
+ check_and_log_hs2gw_connectivity "${hs}"
+ done
+}
+
+host_vpn_tests()
+{
+ log_section "SRv6 VPN connectivity test hosts (h1 <-> h2, IPv6)"
+
+ check_and_log_hs_ipv6_connectivity 1 2
+ check_and_log_hs_ipv6_connectivity 2 1
+
+ log_section "SRv6 VPN connectivity test hosts (h1 <-> h2, IPv4)"
+
+ check_and_log_hs_ipv4_connectivity 1 2
+ check_and_log_hs_ipv4_connectivity 2 1
+}
+
+__nextcsid_end_behavior_test()
+{
+ local nsname="$1"
+ local cmd="$2"
+ local blen="$3"
+ local flen="$4"
+ local layout=""
+
+ if [ "${blen}" != "d" ]; then
+ layout="${layout} lblen ${blen}"
+ fi
+
+ if [ "${flen}" != "d" ]; then
+ layout="${layout} nflen ${flen}"
+ fi
+
+ ip -netns "${nsname}" -6 route \
+ "${cmd}" "${CSID_CNTR_PREFIX}" \
+ table "${CSID_CNTR_RT_TABLE}" \
+ encap seg6local action End flavors next-csid ${layout} \
+ dev "${DUMMY_DEVNAME}" &>/dev/null
+
+ return "$?"
+}
+
+rt_x_nextcsid_end_behavior_test()
+{
+ local rt="$1"
+ local blen="$2"
+ local flen="$3"
+ local nsname
+ local ret
+
+ nsname="$(get_rtname "${rt}")"
+
+ __nextcsid_end_behavior_test "${nsname}" "add" "${blen}" "${flen}"
+ ret="$?"
+ __nextcsid_end_behavior_test "${nsname}" "del" "${blen}" "${flen}"
+
+ return "${ret}"
+}
+
+__parse_csid_container_cfg()
+{
+ local cfg="$1"
+ local index="$2"
+ local out
+
+ echo "${cfg}" | cut -d',' -f"${index}"
+}
+
+csid_container_cfg_tests()
+{
+ local valid
+ local blen
+ local flen
+ local cfg
+ local ret
+
+ log_section "C-SID Container config tests (legend: d='kernel default')"
+
+ for cfg in "${CSID_CONTAINER_CFGS[@]}"; do
+ blen="$(__parse_csid_container_cfg "${cfg}" 1)"
+ flen="$(__parse_csid_container_cfg "${cfg}" 2)"
+ valid="$(__parse_csid_container_cfg "${cfg}" 3)"
+
+ rt_x_nextcsid_end_behavior_test \
+ "${CSID_CNTR_RT_ID_TEST}" \
+ "${blen}" \
+ "${flen}"
+ ret="$?"
+
+ if [ "${valid}" == "y" ]; then
+ log_test "${ret}" 0 \
+ "Accept valid C-SID container cfg (lblen=${blen}, nflen=${flen})"
+ else
+ log_test "${ret}" 2 \
+ "Reject invalid C-SID container cfg (lblen=${blen}, nflen=${flen})"
+ fi
+ done
+}
+
+test_iproute2_supp_or_ksft_skip()
+{
+ if ! ip route help 2>&1 | grep -qo "next-csid"; then
+ echo "SKIP: Missing SRv6 NEXT-C-SID flavor support in iproute2"
+ exit "${ksft_skip}"
+ fi
+}
+
+test_dummy_dev_or_ksft_skip()
+{
+ local test_netns
+
+ test_netns="dummy-$(mktemp -u XXXXXXXX)"
+
+ if ! ip netns add "${test_netns}"; then
+ echo "SKIP: Cannot set up netns for testing dummy dev support"
+ exit "${ksft_skip}"
+ fi
+
+ modprobe dummy &>/dev/null || true
+ if ! ip -netns "${test_netns}" link \
+ add "${DUMMY_DEVNAME}" type dummy; then
+ echo "SKIP: dummy dev not supported"
+
+ ip netns del "${test_netns}"
+ exit "${ksft_skip}"
+ fi
+
+ ip netns del "${test_netns}"
+}
+
+test_vrf_or_ksft_skip()
+{
+ modprobe vrf &>/dev/null || true
+ if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
+ echo "SKIP: vrf sysctl does not exist"
+ exit "${ksft_skip}"
+ fi
+}
+
+if [ "$(id -u)" -ne 0 ]; then
+ echo "SKIP: Need root privileges"
+ exit "${ksft_skip}"
+fi
+
+# required programs to carry out this selftest
+test_command_or_ksft_skip ip
+test_command_or_ksft_skip ping
+test_command_or_ksft_skip sysctl
+test_command_or_ksft_skip grep
+test_command_or_ksft_skip cut
+
+test_iproute2_supp_or_ksft_skip
+test_dummy_dev_or_ksft_skip
+test_vrf_or_ksft_skip
+
+set -e
+trap cleanup EXIT
+
+setup
+set +e
+
+csid_container_cfg_tests
+
+router_tests
+host2gateway_tests
+host_vpn_tests
+
+print_log_test_results
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.