tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh
Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh
File Facts
- System
- Linux kernel
- Corpus path
tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh- Extension
.sh- Size
- 12810 bytes
- Lines
- 465
- 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
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Test traffic distribution when there are multiple paths between an IPv4 GRE
# tunnel. The tunnel carries IPv4 and IPv6 traffic between multiple hosts.
# Multiple routes are in the underlay network. With the default multipath
# policy, SW2 will only look at the outer IP addresses, hence only a single
# route would be used.
#
# +--------------------------------+
# | H1 |
# | $h1 + |
# | 198.51.100.{2-253}/24 | |
# | 2001:db8:1::{2-fd}/64 | |
# +-------------------------|------+
# |
# +-------------------------|------------------+
# | SW1 | |
# | $ol1 + |
# | 198.51.100.1/24 |
# | 2001:db8:1::1/64 |
# | |
# | + g1 (gre) |
# | loc=192.0.2.1 |
# | rem=192.0.2.2 --. |
# | tos=inherit | |
# | v |
# | + $ul1 |
# | | 192.0.2.17/28 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | SW2 | |
# | $ul21 + |
# | 192.0.2.18/28 | |
# | | |
# ! __________________+___ |
# | / \ |
# | | | |
# | + $ul22.111 (vlan) + $ul22.222 (vlan) |
# | | 192.0.2.33/28 | 192.0.2.49/28 |
# | | | |
# +--|----------------------|------------------+
# | |
# +--|----------------------|------------------+
# | | | |
# | + $ul32.111 (vlan) + $ul32.222 (vlan) |
# | | 192.0.2.34/28 | 192.0.2.50/28 |
# | | | |
# | \__________________+___/ |
# | | |
# | | |
# | $ul31 + |
# | 192.0.2.65/28 | SW3 |
# +---------------------|----------------------+
# |
# +---------------------|----------------------+
# | + $ul4 |
# | ^ 192.0.2.66/28 |
# | | |
# | + g2 (gre) | |
# | loc=192.0.2.2 | |
# | rem=192.0.2.1 --' |
# | tos=inherit |
# | |
# | $ol4 + |
# | 203.0.113.1/24 | |
# | 2001:db8:2::1/64 | SW4 |
# +-------------------------|------------------+
# |Annotation
- 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.