src/sys/dev/netmap/if_ptnet.c, branch releng/14.3

net: Remove unneeded NULL check for the allocated ifnet

2024-07-12T12:03:37+00:00

Change 4787572d0580 made if_alloc_domain() never fail, then also do the
wrappers if_alloc(), if_alloc_dev(), and if_gethandle().

No functional change intended.

Reviewed by:	kp, imp, glebius, stevek
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D45740

(cherry picked from commit aa3860851b9f6a6002d135b1cac7736e0995eedc)

sys: Remove $FreeBSD$: two-line .h pattern

2023-08-16T17:54:11+00:00

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

Mechanically convert netmap(4) to IfAPI

2023-02-14T15:21:19+00:00

Reviewed by:	vmaffione, zlei
Sponsored by:	Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D37814

netmap: drop compatibility FreeBSD code

2022-12-24T14:36:31+00:00

Netmap users on FreeBSD are not supposed to import code from the
github netmap repository anymore. They should use the code that
is available in the src repo. We can therefore drop the compatibility
code.

MFC after:	7 days

netmap: Remove unused devclass arguments to DRIVER_MODULE.

2022-05-10T17:21:39+00:00

Use NET_TASK_INIT() and NET_GROUPTASK_INIT() for drivers that process

2020-02-11T18:57:07+00:00

incoming packets in taskqueue context.

Reviewed by:	hselasky
Differential Revision:	https://reviews.freebsd.org/D23518

netmap: disable passthrough with no hypervisor support

2020-01-13T21:47:23+00:00

The netmap passthrough subsystem requires proper support in the
hypervisor. In particular, two PCI device ids (from the Red Hat
PCI vendor id 0x1b36) need to be assigned to the two netmap
virtual devices. We then disable these devices until the ids have
not been assigned, in order to avoid conflicts with other
virtual devices emulated by upstream QEMU.

PR:	241774
MFC after:	3 days

tap: add support for virtio-net offloads

2019-10-18T21:53:27+00:00

This patch is part of an effort to make bhyve networking (in particular TCP)
faster. The key strategy to enhance TCP throughput is to let the whole packet
datapath work with TSO/LRO packets (up to 64KB each), so that the per-packet
overhead is amortized over a large number of bytes.
This capability is supported in the guest by means of the vtnet(4) driver,
which is able to handle TSO/LRO packets leveraging the virtio-net header
(see struct virtio_net_hdr and struct virtio_net_hdr_mrg_rxbuf).
A bhyve VM exchanges packets with the host through a network backend,
which can be vale(4) or if_tap(4).
While vale(4) supports TSO/LRO packets, if_tap(4) does not.
This patch extends if_tap(4) with the ability to understand the virtio-net
header, so that a tapX interface can process TSO/LRO packets.
A couple of ioctl commands have been added to configure and probe the
virtio-net header. Once the virtio-net header is set, the tapX interface
acquires all the IFCAP capabilities necessary for TSO/LRO.

Reviewed by:	kevans
Differential Revision:	https://reviews.freebsd.org/D21263

netmap: align if_ptnet to the changes introduced by r347233

2019-05-17T20:29:31+00:00

This removes non-functional SCTP checksum offload support.
More information in the log message of r347233.

MFC after:	2 weeks

netmap: refactor logging macros and pipes

2019-02-05T12:10:48+00:00

Changelist:
    - Replace ND, D and RD macros with nm_prdis, nm_prinf, nm_prerr
      and nm_prlim, to avoid possible naming conflicts.
    - Add netmap_krings_mode_commit() helper function and use that
      to reduce code duplication.
    - Refactor pipes control code to export some functions that
      can be reused by the veth driver (on Linux) and epair(4).
    - Add check to reject API requests with version less than 11.
    - Small code refactoring for the null adapter.

MFC after:	1 week