passt/dhcpv6.h, branch c9s Plug A Simple Socket Transport passt: Relicense to GPL 2.0, or any later version 2023-04-06T16:00:33+00:00 Stefano Brivio sbrivio@redhat.com 2023-04-05T18:11:44+00:00 ca2749e1bd520c6a1dbca24f1561ee31dd833a54 In practical terms, passt doesn't benefit from the additional protection offered by the AGPL over the GPL, because it's not suitable to be executed over a computer network. Further, restricting the distribution under the version 3 of the GPL wouldn't provide any practical advantage either, as long as the passt codebase is concerned, and might cause unnecessary compatibility dilemmas. Change licensing terms to the GNU General Public License Version 2, or any later version, with written permission from all current and past contributors, namely: myself, David Gibson, Laine Stump, Andrea Bolognani, Paul Holzinger, Richard W.M. Jones, Chris Kuhn, Florian Weimer, Giuseppe Scrivano, Stefan Hajnoczi, and Vasiliy Ulyanov. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
In practical terms, passt doesn't benefit from the additional
protection offered by the AGPL over the GPL, because it's not
suitable to be executed over a computer network.

Further, restricting the distribution under the version 3 of the GPL
wouldn't provide any practical advantage either, as long as the passt
codebase is concerned, and might cause unnecessary compatibility
dilemmas.

Change licensing terms to the GNU General Public License Version 2,
or any later version, with written permission from all current and
past contributors, namely: myself, David Gibson, Laine Stump, Andrea
Bolognani, Paul Holzinger, Richard W.M. Jones, Chris Kuhn, Florian
Weimer, Giuseppe Scrivano, Stefan Hajnoczi, and Vasiliy Ulyanov.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
treewide: Mark constant references as const 2022-03-29T13:35:38+00:00 Stefano Brivio sbrivio@redhat.com 2022-03-26T06:23:21+00:00 48582bf47f5ef7a1bf136ca455d182addad08028 Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
treewide: Add include guards 2022-03-29T13:35:38+00:00 Stefano Brivio sbrivio@redhat.com 2022-03-25T23:05:31+00:00 965f603238a92b6ab8cd8a0592e0fb65c096b3e1 ...at the moment, just for consistency with packet.h, icmp.h, tcp.h and udp.h. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
...at the moment, just for consistency with packet.h, icmp.h,
tcp.h and udp.h.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
treewide: Packet abstraction with mandatory boundary checks 2022-03-29T13:35:38+00:00 Stefano Brivio sbrivio@redhat.com 2022-03-25T12:02:47+00:00 bb708111833e23cafda1a5dd377e13400fa1e452 Implement a packet abstraction providing boundary and size checks based on packet descriptors: packets stored in a buffer can be queued into a pool (without storage of its own), and data can be retrieved referring to an index in the pool, specifying offset and length. Checks ensure data is not read outside the boundaries of buffer and descriptors, and that packets added to a pool are within the buffer range with valid offset and indices. This implies a wider rework: usage of the "queueing" part of the abstraction mostly affects tap_handler_{passt,pasta}() functions and their callees, while the "fetching" part affects all the guest or tap facing implementations: TCP, UDP, ICMP, ARP, NDP, DHCP and DHCPv6 handlers. Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
Implement a packet abstraction providing boundary and size checks
based on packet descriptors: packets stored in a buffer can be queued
into a pool (without storage of its own), and data can be retrieved
referring to an index in the pool, specifying offset and length.

Checks ensure data is not read outside the boundaries of buffer and
descriptors, and that packets added to a pool are within the buffer
range with valid offset and indices.

This implies a wider rework: usage of the "queueing" part of the
abstraction mostly affects tap_handler_{passt,pasta}() functions and
their callees, while the "fetching" part affects all the guest or tap
facing implementations: TCP, UDP, ICMP, ARP, NDP, DHCP and DHCPv6
handlers.

Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
LICENSES: Add license text files, add missing notices, fix SPDX tags 2021-10-20T06:29:30+00:00 Stefano Brivio sbrivio@redhat.com 2021-10-19T10:43:28+00:00 087b5f4dbb9e3f767a8afbb6c1001c509965940b SPDX tags don't replace license files. Some notices were missing and some tags were not according to the SPDX specification, too. Now reuse --lint from the REUSE tool (https://reuse.software/) passes. Reported-by: Martin Hauke <mardnh@gmx.de> Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
SPDX tags don't replace license files. Some notices were missing and
some tags were not according to the SPDX specification, too.

Now reuse --lint from the REUSE tool (https://reuse.software/) passes.

Reported-by: Martin Hauke <mardnh@gmx.de>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
passt: Introduce a DHCPv6 server 2021-04-13T20:37:40+00:00 Stefano Brivio sbrivio@redhat.com 2021-04-13T19:59:47+00:00 4aa8e54a303dfde9a53c47cd07c5af3c5fad4f01 This implementation, similarly to the IPv4 DHCP one, hands out a single address, which is the same as the upstream address for the host. This avoids the need for address translation as long as the client runs a DHCPv6 client. The NDP "Managed" flag is now set in Router Advertisements. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> 
This implementation, similarly to the IPv4 DHCP one, hands out a
single address, which is the same as the upstream address for the
host.

This avoids the need for address translation as long as the client
runs a DHCPv6 client. The NDP "Managed" flag is now set in Router
Advertisements.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>