linux/tools
Jakub Kicinski a38845729e bpf: offload: add map offload infrastructure
BPF map offload follow similar path to program offload.  At creation
time users may specify ifindex of the device on which they want to
create the map.  Map will be validated by the kernel's
.map_alloc_check callback and device driver will be called for the
actual allocation.  Map will have an empty set of operations
associated with it (save for alloc and free callbacks).  The real
device callbacks are kept in map->offload->dev_ops because they
have slightly different signatures.  Map operations are called in
process context so the driver may communicate with HW freely,
msleep(), wait() etc.

Map alloc and free callbacks are muxed via existing .ndo_bpf, and
are always called with rtnl lock held.  Maps and programs are
guaranteed to be destroyed before .ndo_uninit (i.e. before
unregister_netdev() returns).  Map callbacks are invoked with
bpf_devs_lock *read* locked, drivers must take care of exclusive
locking if necessary.

All offload-specific branches are marked with unlikely() (through
bpf_map_is_dev_bound()), given that branch penalty will be
negligible compared to IO anyway, and we don't want to penalize
SW path unnecessarily.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-01-14 23:36:30 +01:00
..
accounting License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
arch Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-12-31 11:47:24 -08:00
bpf tools: bpftool: remove new lines from errors 2018-01-04 12:28:46 +01:00
build tools/bpftool: fix bpftool build with bintutils >= 2.9 2017-12-30 01:07:36 +01:00
cgroup License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
firewire License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gpio This is the bulk of GPIO changes for the v4.15 kernel cycle: 2017-11-14 17:23:44 -08:00
hv hv: kvp: Avoid reading past allocated blocks from KVP file 2017-11-28 16:56:26 +01:00
iio License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
include bpf: offload: add map offload infrastructure 2018-01-14 23:36:30 +01:00
kvm/kvm_stat tools/kvm_stat: sort '-f help' output 2017-12-21 13:03:32 +01:00
laptop License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
leds License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lib libbpf: Fix build errors. 2017-12-20 01:33:25 +01:00
nfsd License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
objtool objtool: Fix seg fault with clang-compiled objects 2017-12-30 22:04:17 +01:00
pci License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcmcia License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf tools arch s390: Do not include header files from the kernel sources 2017-12-18 11:56:13 -03:00
power Power management fixes for v4.15-rc2 2017-11-30 18:45:55 -05:00
scripts tools: bpftool: create "uninstall", "doc-uninstall" make targets 2017-12-08 20:14:16 +01:00
spi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
testing Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-11 22:13:42 -05:00
thermal/tmon Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2017-11-17 14:31:27 -08:00
time
usb usbip: fix usbip bind writing random string after command in match_busid 2017-12-19 11:40:55 +01:00
virtio virtio: regression fixes 2017-12-15 12:56:23 -08:00
vm tools/slabinfo-gnuplot: force to use bash shell 2017-12-14 16:00:48 -08:00
wmi tools/wmi: add a sample for dell smbios communication over WMI 2017-11-03 16:34:00 -07:00
Makefile platform-drivers-x86 for v4.15-1 2017-11-18 10:26:57 -08:00