tools/testing/selftests/net/forwarding/bridge_mdb_port_down.sh
Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/forwarding/bridge_mdb_port_down.sh
File Facts
- System
- Linux kernel
- Corpus path
tools/testing/selftests/net/forwarding/bridge_mdb_port_down.sh- Extension
.sh- Size
- 2292 bytes
- Lines
- 119
- Domain
- Support Tooling And Documentation
- Bucket
- tools
- Inferred role
- Support Tooling And Documentation: tools
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
function add_del_to_port_down
Annotated Snippet
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Verify that permanent mdb entries can be added to and deleted from bridge
# interfaces that are down, and works correctly when done so.
ALL_TESTS="add_del_to_port_down"
NUM_NETIFS=4
TEST_GROUP="239.10.10.10"
TEST_GROUP_MAC="01:00:5e:0a:0a:0a"
source lib.sh
add_del_to_port_down() {
RET=0
ip link set dev $swp2 down
bridge mdb add dev br0 port "$swp2" grp $TEST_GROUP permanent 2>/dev/null
check_err $? "Failed adding mdb entry"
ip link set dev $swp2 up
setup_wait_dev $swp2
mcast_packet_test $TEST_GROUP_MAC 192.0.2.1 $TEST_GROUP $h1 $h2
check_fail $? "Traffic to $TEST_GROUP wasn't forwarded"
ip link set dev $swp2 down
bridge mdb show dev br0 | grep -q "$TEST_GROUP permanent" 2>/dev/null
check_err $? "MDB entry did not persist after link up/down"
bridge mdb del dev br0 port "$swp2" grp $TEST_GROUP 2>/dev/null
check_err $? "Failed deleting mdb entry"
ip link set dev $swp2 up
setup_wait_dev $swp2
mcast_packet_test $TEST_GROUP_MAC 192.0.2.1 $TEST_GROUP $h1 $h2
check_err $? "Traffic to $TEST_GROUP was forwarded after entry removed"
log_test "MDB add/del entry to port with state down "
}
h1_create()
{
simple_if_init $h1 192.0.2.1/24 2001:db8:1::1/64
}
h1_destroy()
{
simple_if_fini $h1 192.0.2.1/24 2001:db8:1::1/64
}
h2_create()
{
simple_if_init $h2 192.0.2.2/24 2001:db8:1::2/64
}
h2_destroy()
{
simple_if_fini $h2 192.0.2.2/24 2001:db8:1::2/64
}
switch_create()
{
# Enable multicast filtering
ip link add dev br0 type bridge mcast_snooping 1 mcast_querier 1
ip link set dev $swp1 master br0
ip link set dev $swp2 master br0
Annotation
- Detected declarations: `function add_del_to_port_down`.
- Atlas domain: Support Tooling And Documentation / tools.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.