Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

netdump(4): document all kernel options required

This means INET and DEBUGNET in addition to NETDUMP.

Reviewed by: pauamma, markj
MFC after: 3 days
Differential Revision: https://reviews.freebsd.or

netdump(4): document all kernel options required

This means INET and DEBUGNET in addition to NETDUMP.

Reviewed by: pauamma, markj
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D37331

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MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

Add mlx5en(4) to the list of supported netdump network drivers.

MFC after: 1 week
Sponsored by: Mellanox Technologies

Add ddb(4) 'netdump' command to netdump a core without preconfiguration

Add a 'X -s <server> -c <client> [-g <gateway>] -i <interface>' subroutine
to the generic debugnet code. The imagined use is

Add ddb(4) 'netdump' command to netdump a core without preconfiguration

Add a 'X -s <server> -c <client> [-g <gateway>] -i <interface>' subroutine
to the generic debugnet code. The imagined use is both netdump, shown here,
and NetGDB (vaporware). It uses the ddb(4) lexer, with some new extensions,
to parse out IPv4 addresses.

'Netdump' uses the generic debugnet routine to load a configuration and
start a dump, without any netdump configuration prior to panic.

Loosely derived from work by: John Reimer <john.reimer AT emc.com>
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D21460

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Merge ^/head r340918 through r341763.

ixl(4) has netdump support via iflib.

Reported by: kbowling
MFC after: 3 days

Netdump support was added to mlx4en(4) in r341548.

MFC with: r341548

Merge ^/head r339813 through r340125.

Expose some netdump configuration parameters through sysctl.

Reviewed by: cem
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D17755

Correct the list of supported drivers.

- bnxt(4) is supported via iflib.
- mlx4en(4) support has not yet been committed.

Remove a reference to NETDUMP_DEBUG, and document sysctls.

NETDUMP_DEBUG was removed and replaced with a sysctl which enables
debug output without requiring a recompile.

Import the netdump client code.

This is a component of a system which lets the kernel dump core to
a remote host after a panic, rather than to a local storage device.
The server component is availab

Import the netdump client code.

This is a component of a system which lets the kernel dump core to
a remote host after a panic, rather than to a local storage device.
The server component is available in the ports tree. netdump is
particularly useful on diskless systems.

The netdump(4) man page contains some details describing the protocol.
Support for configuring netdump will be added to dumpon(8) in a future
commit. To use netdump, the kernel must have been compiled with the
NETDUMP option.

The initial revision of netdump was written by Darrell Anderson and
was integrated into Sandvine's OS, from which this version was derived.

Reviewed by: bdrewery, cem (earlier versions), julian, sbruno
MFC after: 1 month
X-MFC note: use a spare field in struct ifnet
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D15253

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