linux-toradex.git/include/uapi/linux/netdev.h, branch v6.16-rc5

net: devmem: TCP tx netlink api

2025-05-13T09:12:48+00:00

Add bind-tx netlink call to attach dmabuf for TX; queue is not
required, only ifindex and dmabuf fd for attachment.

Signed-off-by: Stanislav Fomichev 
Signed-off-by: Mina Almasry 
Link: https://patch.msgid.link/20250508004830.4100853-4-almasrymina@google.com
Signed-off-by: Paolo Abeni

Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2025-02-21T23:59:47+00:00

Martin KaFai Lau says:

====================
pull-request: bpf-next 2025-02-20

We've added 19 non-merge commits during the last 8 day(s) which contain
a total of 35 files changed, 1126 insertions(+), 53 deletions(-).

The main changes are:

1) Add TCP_RTO_MAX_MS support to bpf_set/getsockopt, from Jason Xing

2) Add network TX timestamping support to BPF sock_ops, from Jason Xing

3) Add TX metadata Launch Time support, from Song Yoong Siang

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
  igc: Add launch time support to XDP ZC
  igc: Refactor empty frame insertion for launch time support
  net: stmmac: Add launch time support to XDP ZC
  selftests/bpf: Add launch time request to xdp_hw_metadata
  xsk: Add launch time hardware offload support to XDP Tx metadata
  selftests/bpf: Add simple bpf tests in the tx path for timestamping feature
  bpf: Support selective sampling for bpf timestamping
  bpf: Add BPF_SOCK_OPS_TSTAMP_SENDMSG_CB callback
  bpf: Add BPF_SOCK_OPS_TSTAMP_ACK_CB callback
  bpf: Add BPF_SOCK_OPS_TSTAMP_SND_HW_CB callback
  bpf: Add BPF_SOCK_OPS_TSTAMP_SND_SW_CB callback
  bpf: Add BPF_SOCK_OPS_TSTAMP_SCHED_CB callback
  net-timestamp: Prepare for isolating two modes of SO_TIMESTAMPING
  bpf: Disable unsafe helpers in TX timestamping callbacks
  bpf: Prevent unsafe access to the sock fields in the BPF timestamping callback
  bpf: Prepare the sock_ops ctx and call bpf prog for TX timestamping
  bpf: Add networking timestamping support to bpf_get/setsockopt()
  selftests/bpf: Add rto max for bpf_setsockopt test
  bpf: Support TCP_RTO_MAX_MS for bpf_setsockopt
====================

Link: https://patch.msgid.link/20250221022104.386462-1-martin.lau@linux.dev
Signed-off-by: Jakub Kicinski

xsk: Add launch time hardware offload support to XDP Tx metadata

2025-02-20T23:13:45+00:00

Extend the XDP Tx metadata framework so that user can requests launch time
hardware offload, where the Ethernet device will schedule the packet for
transmission at a pre-determined time called launch time. The value of
launch time is communicated from user space to Ethernet driver via
launch_time field of struct xsk_tx_metadata.

Suggested-by: Stanislav Fomichev 
Signed-off-by: Song Yoong Siang 
Signed-off-by: Martin KaFai Lau 
Acked-by: Stanislav Fomichev 
Acked-by: Jakub Kicinski 
Link: https://patch.msgid.link/20250216093430.957880-2-yoong.siang.song@intel.com

netdev-genl: Add an XSK attribute to queues

2025-02-18T00:46:03+00:00

Expose a new per-queue nest attribute, xsk, which will be present for
queues that are being used for AF_XDP. If the queue is not being used for
AF_XDP, the nest will not be present.

In the future, this attribute can be extended to include more data about
XSK as it is needed.

Signed-off-by: Joe Damato 
Suggested-by: Jakub Kicinski 
Link: https://patch.msgid.link/20250214211255.14194-3-jdamato@fastly.com
Signed-off-by: Jakub Kicinski

netdev: add io_uring memory provider info

2025-02-07T00:27:30+00:00

Add a nested attribute for io_uring memory provider info. For now it is
empty and its presence indicates that a particular page pool or queue
has an io_uring memory provider attached.

$ ./cli.py --spec netlink/specs/netdev.yaml --dump page-pool-get
[{'id': 80,
  'ifindex': 2,
  'inflight': 64,
  'inflight-mem': 262144,
  'napi-id': 525},
 {'id': 79,
  'ifindex': 2,
  'inflight': 320,
  'inflight-mem': 1310720,
  'io_uring': {},
  'napi-id': 525},
...

$ ./cli.py --spec netlink/specs/netdev.yaml --dump queue-get
[{'id': 0, 'ifindex': 1, 'type': 'rx'},
 {'id': 0, 'ifindex': 1, 'type': 'tx'},
 {'id': 0, 'ifindex': 2, 'napi-id': 513, 'type': 'rx'},
 {'id': 1, 'ifindex': 2, 'napi-id': 514, 'type': 'rx'},
...
 {'id': 12, 'ifindex': 2, 'io_uring': {}, 'napi-id': 525, 'type': 'rx'},
...

Reviewed-by: Jakub Kicinski 
Signed-off-by: Pavel Begunkov 
Signed-off-by: David Wei 
Link: https://patch.msgid.link/20250204215622.695511-6-dw@davidwei.uk
Signed-off-by: Jakub Kicinski

net: Add napi_struct parameter irq_suspend_timeout

2024-11-12T02:45:05+00:00

Add a per-NAPI IRQ suspension parameter, which can be get/set with
netdev-genl.

This patch doesn't change any behavior but prepares the code for other
changes in the following commits which use irq_suspend_timeout as a
timeout for IRQ suspension.

Signed-off-by: Martin Karsten 
Co-developed-by: Joe Damato 
Signed-off-by: Joe Damato 
Tested-by: Joe Damato 
Tested-by: Martin Karsten 
Acked-by: Stanislav Fomichev 
Reviewed-by: Sridhar Samudrala 
Link: https://patch.msgid.link/20241109050245.191288-2-jdamato@fastly.com
Signed-off-by: Jakub Kicinski

netdev-genl: Support setting per-NAPI config values

2024-10-15T00:54:29+00:00

Add support to set per-NAPI defer_hard_irqs and gro_flush_timeout.

Signed-off-by: Joe Damato 
Reviewed-by: Jakub Kicinski 
Reviewed-by: Eric Dumazet 
Link: https://patch.msgid.link/20241011184527.16393-7-jdamato@fastly.com
Signed-off-by: Jakub Kicinski

netdev-genl: Dump gro_flush_timeout

2024-10-15T00:54:29+00:00

Support dumping gro_flush_timeout for a NAPI ID.

Signed-off-by: Joe Damato 
Reviewed-by: Jakub Kicinski 
Reviewed-by: Eric Dumazet 
Link: https://patch.msgid.link/20241011184527.16393-5-jdamato@fastly.com
Signed-off-by: Jakub Kicinski

netdev-genl: Dump napi_defer_hard_irqs

2024-10-15T00:54:29+00:00

Support dumping defer_hard_irqs for a NAPI ID.

Signed-off-by: Joe Damato 
Reviewed-by: Eric Dumazet 
Reviewed-by: Jakub Kicinski 
Link: https://patch.msgid.link/20241011184527.16393-3-jdamato@fastly.com
Signed-off-by: Jakub Kicinski

netdev: add dmabuf introspection

2024-09-12T03:44:32+00:00

Add dmabuf information to page_pool stats:

$ ./cli.py --spec ../netlink/specs/netdev.yaml --dump page-pool-get
...
 {'dmabuf': 10,
  'id': 456,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 455,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 454,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 453,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 452,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 451,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 450,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},
 {'dmabuf': 10,
  'id': 449,
  'ifindex': 3,
  'inflight': 1023,
  'inflight-mem': 4190208},

And queue stats:

$ ./cli.py --spec ../netlink/specs/netdev.yaml --dump queue-get
...
{'dmabuf': 10, 'id': 8, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 9, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 10, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 11, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 12, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 13, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 14, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 15, 'ifindex': 3, 'type': 'rx'},

Suggested-by: Jakub Kicinski 
Signed-off-by: Mina Almasry 
Reviewed-by: Jakub Kicinski 
Link: https://patch.msgid.link/20240910171458.219195-14-almasrymina@google.com
Signed-off-by: Jakub Kicinski