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b24413180f
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
180 lines
5.6 KiB
Bash
Executable File
180 lines
5.6 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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function config_device {
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ip netns add at_ns0
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ip netns add at_ns1
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ip netns add at_ns2
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ip link add veth0 type veth peer name veth0b
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ip link add veth1 type veth peer name veth1b
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ip link add veth2 type veth peer name veth2b
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ip link set veth0b up
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ip link set veth1b up
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ip link set veth2b up
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ip link set dev veth0b mtu 1500
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ip link set dev veth1b mtu 1500
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ip link set dev veth2b mtu 1500
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ip link set veth0 netns at_ns0
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ip link set veth1 netns at_ns1
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ip link set veth2 netns at_ns2
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ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
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ip netns exec at_ns0 ip addr add 2401:db00::1/64 dev veth0 nodad
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ip netns exec at_ns0 ip link set dev veth0 up
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ip netns exec at_ns1 ip addr add 172.16.1.101/24 dev veth1
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ip netns exec at_ns1 ip addr add 2401:db00::2/64 dev veth1 nodad
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ip netns exec at_ns1 ip link set dev veth1 up
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ip netns exec at_ns2 ip addr add 172.16.1.200/24 dev veth2
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ip netns exec at_ns2 ip addr add 2401:db00::3/64 dev veth2 nodad
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ip netns exec at_ns2 ip link set dev veth2 up
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ip link add br0 type bridge
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ip link set br0 up
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ip link set dev br0 mtu 1500
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ip link set veth0b master br0
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ip link set veth1b master br0
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ip link set veth2b master br0
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}
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function add_ipip_tunnel {
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type ipip local 172.16.1.100 remote 172.16.1.200
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns1 \
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ip link add dev $DEV_NS type ipip local 172.16.1.101 remote 172.16.1.200
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ip netns exec at_ns1 ip link set dev $DEV_NS up
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# same inner IP address in at_ns0 and at_ns1
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ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns2 ip link add dev $DEV type ipip external
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ip netns exec at_ns2 ip link set dev $DEV up
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ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24
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}
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function add_ipip6_tunnel {
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::1/64 remote 2401:db00::3/64
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns1 \
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ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::2/64 remote 2401:db00::3/64
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ip netns exec at_ns1 ip link set dev $DEV_NS up
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# same inner IP address in at_ns0 and at_ns1
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ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24
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ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ipip6 external
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ip netns exec at_ns2 ip link set dev $DEV up
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ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24
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}
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function add_ip6ip6_tunnel {
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ip netns exec at_ns0 \
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ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::1/64 remote 2401:db00::3/64
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ip netns exec at_ns0 ip link set dev $DEV_NS up
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ip netns exec at_ns0 ip addr add dev $DEV_NS 2601:646::1/64
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ip netns exec at_ns1 \
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ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::2/64 remote 2401:db00::3/64
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ip netns exec at_ns1 ip link set dev $DEV_NS up
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# same inner IP address in at_ns0 and at_ns1
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ip netns exec at_ns1 ip addr add dev $DEV_NS 2601:646::1/64
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ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ip6ip6 external
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ip netns exec at_ns2 ip link set dev $DEV up
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ip netns exec at_ns2 ip addr add dev $DEV 2601:646::2/64
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}
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function attach_bpf {
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DEV=$1
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SET_TUNNEL=$2
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GET_TUNNEL=$3
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ip netns exec at_ns2 tc qdisc add dev $DEV clsact
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ip netns exec at_ns2 tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
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ip netns exec at_ns2 tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
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}
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function test_ipip {
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DEV_NS=ipip_std
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DEV=ipip_bpf
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config_device
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# tcpdump -nei br0 &
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cat /sys/kernel/debug/tracing/trace_pipe &
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add_ipip_tunnel
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attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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ip netns exec at_ns2 ping -c 1 10.1.1.100
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ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
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ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null
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sleep 0.2
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# tcp check _same_ IP over different tunnels
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ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200
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ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201
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cleanup
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}
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# IPv4 over IPv6 tunnel
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function test_ipip6 {
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DEV_NS=ipip_std
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DEV=ipip_bpf
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config_device
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# tcpdump -nei br0 &
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cat /sys/kernel/debug/tracing/trace_pipe &
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add_ipip6_tunnel
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attach_bpf $DEV ipip6_set_tunnel ipip6_get_tunnel
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ip netns exec at_ns0 ping -c 1 10.1.1.200
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ip netns exec at_ns2 ping -c 1 10.1.1.100
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ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
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ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null
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sleep 0.2
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# tcp check _same_ IP over different tunnels
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ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200
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ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201
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cleanup
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}
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# IPv6 over IPv6 tunnel
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function test_ip6ip6 {
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DEV_NS=ipip_std
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DEV=ipip_bpf
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config_device
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# tcpdump -nei br0 &
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cat /sys/kernel/debug/tracing/trace_pipe &
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add_ip6ip6_tunnel
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attach_bpf $DEV ip6ip6_set_tunnel ip6ip6_get_tunnel
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ip netns exec at_ns0 ping -6 -c 1 2601:646::2
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ip netns exec at_ns2 ping -6 -c 1 2601:646::1
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ip netns exec at_ns0 iperf -6sD -p 5200 > /dev/null
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ip netns exec at_ns1 iperf -6sD -p 5201 > /dev/null
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sleep 0.2
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# tcp check _same_ IP over different tunnels
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ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5200
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ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5201
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cleanup
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}
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function cleanup {
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set +ex
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pkill iperf
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ip netns delete at_ns0
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ip netns delete at_ns1
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ip netns delete at_ns2
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ip link del veth0
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ip link del veth1
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ip link del veth2
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ip link del br0
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pkill tcpdump
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pkill cat
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set -ex
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}
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cleanup
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echo "Testing IP tunnels..."
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test_ipip
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test_ipip6
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test_ip6ip6
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echo "*** PASS ***"
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