path: root/README
diff options
authorHemant Agrawal <>2017-12-19 15:44:38 +0530
committerThomas Monjalon <>2018-01-04 22:41:38 +0100
commita4862c9e1a98694cbdb93e957e3b4fcf086bab6f (patch)
treefe4d2f36b697b3027de554e863ce5b3b41cb8f19 /README
parentcb9c546f9058ab8600d9cd24085ad348193a4a9d (diff)
license: introduce SPDX identifiers
The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are naturally GPLv2 licensed. Many of the files in the DPDK source code contain the full text of the applicable license. For example, most of the BSD-3-Clause files contain a full copy of the BSD-3-Clause license text. Including big blocks of License headers in all files blows up the source code with mostly redundant information. An additional problem is that even the same licenses are referred to by a number of slightly varying text blocks (full, abbreviated, different indentation, line wrapping and/or white space, with obsolete address information, ...) which makes validation and automatic processing a nightmare. To make this easier, DPDK uses of a single line reference to Unique License Identifiers in source files as defined by the Linux Foundation's SPDX project Adding license information in this fashion, rather than adding full license text, can be more efficient for developers; decreases errors; and improves automated detection of licenses. The current set of valid, predefined SPDX identifiers is set forth on the SPDX License List at For example, to label a file as subject to the BSD-3-Clause license, the following text would be used as the top line of the file. SPDX-License-Identifier: BSD-3-Clause Note: Any new file contributions in DPDK shall adhere to the above scheme. It is also recommended to replace or at least amend the existing license text in the code with SPDX-License-Identifiers. Any exception to DPDK IP policies shall be approved by DPDK tech board and DPDK Governing Board. Steps for any exception approval: 1. Mention the appropriate license identifier form SPDX. If the license is not listed in SPDX Licenses. It is the submitters responsibiliity to get it first listed. 2. Get the required approval from the DPDK Technical Board. Technical board may advise the author to check alternate means first. If no other alternatives are found and the merit of the contributions are important for DPDK's mission, it may decide on such exception with two-thirds vote of the members. 3. Technical board then approach Governing board for such limited approval for the given contribution only. Any approvals shall be documented in "licenses/exceptions.txt" with record dates. Note: From the legal point of view, this patch is supposed to be only a change to the textual representation of the license information, but in no way any change to the actual license terms. With this patch applied, all files will still be licensed under the same terms they were before. Signed-off-by: Hemant Agrawal <> Acked-by: Stephen Hemminger <> Acked-by: Thomas Monjalon <>
Diffstat (limited to 'README')
1 files changed, 2 insertions, 2 deletions
diff --git a/README b/README
index 29ba0e0..55df158 100644
--- a/README
+++ b/README
@@ -1,8 +1,8 @@
DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.
-The DPDK uses the Open Source BSD license for the core libraries and
-drivers. The kernel components are GPLv2 licensed.
+The DPDK uses the Open Source BSD-3-Clause license for the core libraries
+and drivers. The kernel components are GPL-2.0 licensed.
Please check the doc directory for release notes,
API documentation, and sample application information.