linux-toradex.git/net/mptcp/Makefile, branch v6.7

net: mptcp: use policy generated by YAML spec

2023-10-24T20:00:32+00:00

generated with:

 $ ./tools/net/ynl/ynl-gen-c.py --mode kernel \
 > --spec Documentation/netlink/specs/mptcp.yaml --source \
 > -o net/mptcp/mptcp_pm_gen.c
 $ ./tools/net/ynl/ynl-gen-c.py --mode kernel \
 > --spec Documentation/netlink/specs/mptcp.yaml --header \
 > -o net/mptcp/mptcp_pm_gen.h

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/340
Acked-by: Paolo Abeni 
Signed-off-by: Davide Caratti 
Signed-off-by: Mat Martineau 
Link: https://lore.kernel.org/r/20231023-send-net-next-20231023-1-v2-7-16b1f701f900@kernel.org
Signed-off-by: Jakub Kicinski

mptcp: add struct mptcp_sched_ops

2023-08-23T00:31:18+00:00

This patch defines struct mptcp_sched_ops, which has three struct members,
name, owner and list, and four function pointers: init(), release() and
get_subflow().

The scheduler function get_subflow() have a struct mptcp_sched_data
parameter, which contains a reinject flag for retrans or not, a subflows
number and a mptcp_subflow_context array.

Add the scheduler registering, unregistering and finding functions to add,
delete and find a packet scheduler on the global list mptcp_sched_list.

Acked-by: Paolo Abeni 
Reviewed-by: Mat Martineau 
Signed-off-by: Geliang Tang 
Signed-off-by: Mat Martineau 
Link: https://lore.kernel.org/r/20230821-upstream-net-next-20230818-v1-3-0c860fb256a8@kernel.org
Signed-off-by: Jakub Kicinski

mptcp: implement delayed seq generation for passive fastopen

2022-11-30T04:24:25+00:00

With fastopen in place, the first subflow socket is created before the
MPC handshake completes, and we need to properly initialize the sequence
numbers at MPC ACK reception.

Co-developed-by: Paolo Abeni 
Signed-off-by: Paolo Abeni 
Co-developed-by: Matthieu Baerts 
Signed-off-by: Matthieu Baerts 
Signed-off-by: Dmytro Shytyi 
Signed-off-by: Matthieu Baerts 
Signed-off-by: Jakub Kicinski

Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2022-05-23T23:07:14+00:00

Daniel Borkmann says:

====================
pull-request: bpf-next 2022-05-23

We've added 113 non-merge commits during the last 26 day(s) which contain
a total of 121 files changed, 7425 insertions(+), 1586 deletions(-).

The main changes are:

1) Speed up symbol resolution for kprobes multi-link attachments, from Jiri Olsa.

2) Add BPF dynamic pointer infrastructure e.g. to allow for dynamically sized ringbuf
   reservations without extra memory copies, from Joanne Koong.

3) Big batch of libbpf improvements towards libbpf 1.0 release, from Andrii Nakryiko.

4) Add BPF link iterator to traverse links via seq_file ops, from Dmitrii Dolgov.

5) Add source IP address to BPF tunnel key infrastructure, from Kaixi Fan.

6) Refine unprivileged BPF to disable only object-creating commands, from Alan Maguire.

7) Fix JIT blinding of ld_imm64 when they point to subprogs, from Alexei Starovoitov.

8) Add BPF access to mptcp_sock structures and their meta data, from Geliang Tang.

9) Add new BPF helper for access to remote CPU's BPF map elements, from Feng Zhou.

10) Allow attaching 64-bit cookie to BPF link of fentry/fexit/fmod_ret, from Kui-Feng Lee.

11) Follow-ups to typed pointer support in BPF maps, from Kumar Kartikeya Dwivedi.

12) Add busy-poll test cases to the XSK selftest suite, from Magnus Karlsson.

13) Improvements in BPF selftest test_progs subtest output, from Mykola Lysenko.

14) Fill bpf_prog_pack allocator areas with illegal instructions, from Song Liu.

15) Add generic batch operations for BPF map-in-map cases, from Takshak Chahande.

16) Make bpf_jit_enable more user friendly when permanently on 1, from Tiezhu Yang.

17) Fix an array overflow in bpf_trampoline_get_progs(), from Yuntao Wang.

====================

Link: https://lore.kernel.org/r/20220523223805.27931-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski

bpf: Add bpf_skc_to_mptcp_sock_proto

2022-05-20T22:29:00+00:00

This patch implements a new struct bpf_func_proto, named
bpf_skc_to_mptcp_sock_proto. Define a new bpf_id BTF_SOCK_TYPE_MPTCP,
and a new helper bpf_skc_to_mptcp_sock(), which invokes another new
helper bpf_mptcp_sock_from_subflow() in net/mptcp/bpf.c to get struct
mptcp_sock from a given subflow socket.

v2: Emit BTF type, add func_id checks in verifier.c and bpf_trace.c,
remove build check for CONFIG_BPF_JIT
v5: Drop EXPORT_SYMBOL (Martin)

Co-developed-by: Nicolas Rybowski 
Co-developed-by: Matthieu Baerts 
Signed-off-by: Nicolas Rybowski 
Signed-off-by: Matthieu Baerts 
Signed-off-by: Geliang Tang 
Signed-off-by: Mat Martineau 
Signed-off-by: Andrii Nakryiko 
Link: https://lore.kernel.org/bpf/20220519233016.105670-2-mathew.j.martineau@linux.intel.com

mptcp: handle local addrs announced by userspace PMs

2022-05-04T09:49:31+00:00

This change adds an internal function to store/retrieve local
addrs announced by userspace PM implementations to/from its kernel
context. The function addresses the requirements of three scenarios:
1) ADD_ADDR announcements (which require that a local id be
provided), 2) retrieving the local id associated with an address,
and also where one may need to be assigned, and 3) reissuance of
ADD_ADDRs when there's a successful match of addr/id.

The list of all stored local addr entries is held under the
MPTCP sock structure. Memory for these entries is allocated from
the sock option buffer, so the list of addrs is bounded by optmem_max.
The list if not released via REMOVE_ADDR signals is ultimately
freed when the sock is destructed.

Acked-by: Paolo Abeni 
Signed-off-by: Kishen Maloor 
Signed-off-by: Mat Martineau 
Signed-off-by: David S. Miller

kunit: mptcp: adhere to KUNIT formatting standard

2021-04-17T00:10:40+00:00

Drop 'S' from end of CONFIG_MPTCP_KUNIT_TESTS in order to adhere to the
KUNIT *_KUNIT_TEST config name format.

Fixes: a00a582203db (mptcp: move crypto test to KUNIT)
Reviewed-by: David Gow 
Reviewed-by: Matthieu Baerts 
Signed-off-by: Nico Pache 
Signed-off-by: Mat Martineau 
Signed-off-by: David S. Miller

mptcp: move sockopt function into a new file

2021-04-16T22:23:09+00:00

The MPTCP sockopt implementation is going to be much
more big and complex soon. Let's move it to a different
source file.

No functional change intended.

Signed-off-by: Paolo Abeni 
Signed-off-by: Mat Martineau 
Signed-off-by: David S. Miller

mptcp: enable JOIN requests even if cookies are in use

2020-07-31T23:55:32+00:00

JOIN requests do not work in syncookie mode -- for HMAC validation, the
peers nonce and the mptcp token (to obtain the desired connection socket
the join is for) are required, but this information is only present in the
initial syn.

So either we need to drop all JOIN requests once a listening socket enters
syncookie mode, or we need to store enough state to reconstruct the request
socket later.

This adds a state table (1024 entries) to store the data present in the
MP_JOIN syn request and the random nonce used for the cookie syn/ack.

When a MP_JOIN ACK passed cookie validation, the table is consulted
to rebuild the request socket from it.

An alternate approach would be to "cancel" syn-cookie mode and force
MP_JOIN to always use a syn queue entry.

However, doing so brings the backlog over the configured queue limit.

v2: use req->syncookie, not (removed) want_cookie arg

Suggested-by: Paolo Abeni 
Signed-off-by: Florian Westphal 
Reviewed-by: Mat Martineau 
Signed-off-by: David S. Miller

mptcp: add MPTCP socket diag interface

2020-07-09T19:38:41+00:00

exposes basic inet socket attribute, plus some MPTCP socket
fields comprising PM status and MPTCP-level sequence numbers.

Reviewed-by: Mat Martineau 
Signed-off-by: Paolo Abeni 
Signed-off-by: David S. Miller