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Filename Latest commit message Latest commit date
Martin KaFai Lau b16d9aa4c2 bpf: Add BPF_PROG_GET_FD_BY_ID
Add BPF_PROG_GET_FD_BY_ID command to allow user to get a fd
from a bpf_prog's ID.

bpf_prog_inc_not_zero() is added and is called with prog_idr_lock
held.

__bpf_prog_put() is also added which has the 'bool do_idr_lock'
param to decide if the prog_idr_lock should be acquired when
freeing the prog->id.

In the error path of bpf_prog_inc_not_zero(), it may have to
call __bpf_prog_put(map, false) which does not need
to take the prog_idr_lock when freeing the prog->id.

It is currently limited to CAP_SYS_ADMIN which we can
consider to lift it in followup patches.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-06 15:41:23 -04:00
arch
block
certs
crypto
Documentation net: phy: Delete unused function phy_ethtool_gset 2017-06-06 15:12:28 -04:00
drivers cxgb4: implement ndo_set_vf_rate() 2017-06-06 15:17:10 -04:00
firmware
fs
include bpf: Add BPF_PROG_GET_FD_BY_ID 2017-06-06 15:41:23 -04:00
init
ipc
kernel bpf: Add BPF_PROG_GET_FD_BY_ID 2017-06-06 15:41:23 -04:00
lib
mm
net net: sched: introduce a TRAP control action 2017-06-06 12:45:23 -04:00
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README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.