switch xdp_sni.bpf.o LPM trie map to hash map
to reduce code complexity and avoid verifier error
now need to add domain and its sub domain to hash
map to block each domain and its sub domain site.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
add XDP TLS SNI logging with bpf ringbuf
drop xdp_sni.bpf.o reverse_string due to
bpf verifier complaining program is too large.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
add the missing config/cfgroot/xdpdns-settings file
and use ENABLE_DNSBLOCK=on by default, so XDP DNS
Blocklist is enabled by default.
also add domainfile so when BPFire reboot first time
and when xdpdns init startup, it will not complain
missing domainfile
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
domain name in xdp_dns.bpf.o not reversed properly
result in domain name mismatch with domain inserted
from user space xdp_dns
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
run xdp_dns in xdpdns init script to populate
domain_denylist from domainfile saved from UI.
either xdpdns restart or bpfire reboot, the domain_denylist
is restored with domain blocklist
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
if XDP DNS is enabled, and BPFire reboot, XDP
DNS program should be attached and DNS query being
monitored after reboot.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
add xdpdns init script to load/unload xdp_dns_denylist
program and run xdp_dns_log to log dns query to system log
rm log/configroot log/initscripts to build image
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
Lunatik sni filter currently does not work
for BPFire when chrome browser is used due to
clienthello > 1500 bytes, XDP TLS/SSL has
the same issue, to block domain access, it
appears XDP DNS domain blocking works more
reliable than SNI, so if there is need to block
chrome browser for some domain, use XDP DNS
domain blocking as mitigation.
see https://github.com/vincentmli/BPFire/issues/40
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
compile and install perf tool from linux
source for performance monitoring.
change the setting before run perf
echo -1 > /proc/sys/kernel/perf_event_paranoid
echo 0 > /proc/sys/kernel/kptr_restrict
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
Add the missing serial linux command so the
flash image can be converted to qcow2, the
bpfire qcow2 image can be deployed in KVM
virtual environment through serial console
installation.
for exmaple:
virsh define BPFire-VM.xml
virsh start BPFire-VM
virsh console BPFire-VM
we will have serial console access to BPFire
VM and the installation will start.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
how to generate logo format:
apt-get install netpbm
1 convert png format to ppm format
pngtopnm bpfire-logo.png > bpfire-logo.ppm
2 reduce the color count to 224
ppmquant 224 bpfire-logo.ppm > bpfire-logo-224.ppm
3 convert ppm raw format to ascii format
pnmnoraw bpfire-logo-224.ppm > bpfire-logo-ascii.ppm
cp bpfire-logo-ascii.ppm config/kernel/
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
This reverts commit bb773a05d5.
drivers/video/logo/logo_linux_clut224.ppm: Binary PNM is not supported
Use pnmnoraw(1) to convert it to ASCII PNM
make[6]: *** [drivers/video/logo/Makefile:31: drivers/video/logo/logo_linux_clut224.c] Error 1
make[5]: *** [scripts/Makefile.build:485: drivers/video/logo] Error 2
make[4]: *** [scripts/Makefile.build:485: drivers/video] Error 2
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
whenever compile kernel due to kernel change
lunatik needs to be recompiled too since
lunatik depends on kernel
change filter example Makefile to depend on
current kernel build version
diff --git a/examples/filter/Makefile b/examples/filter/Makefile
index f7eb0f6d..e30566a2 100644
--- a/examples/filter/Makefile
+++ b/examples/filter/Makefile
@@ -1,10 +1,12 @@
# SPDX-FileCopyrightText: (c) 2023-2024 Ring Zero Desenvolvimento de Software LTDA
# SPDX-License-Identifier: MIT OR GPL-2.0-only
+VMLINUX_BTF_PATH = /lib/modules/${shell uname -r}/build
+
all: vmlinux https.o
vmlinux:
- bpftool btf dump file /sys/kernel/btf/vmlinux format c > vmlinux.h
+ bpftool btf dump file $(VMLINUX_BTF_PATH)/vmlinux format c > vmlinux.h
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
upgrade kernel to recent stable release 6.10.11
1, scripts/kconfig/merge_config.sh does not work for 6.10.11
2, vmlinux BTF binary name changed in 6.10.11
3, remove rtl8812au for now since it has compiling error
4, remove 5.15 nfqueue patch since it does not apply cleanly
also see [0]
[0]: https://github.com/vincentmli/BPFire/issues/41
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
BTF mismatch is not an issue since
we addressed lunatik kernel module
BTF mismatch issue using the same
chroot binary vmlinux BTF.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
error when run lunatik which loads lunatik kernel modules
root@bpfire-2 lua]# lunatik run examples/filter/sni false
[root@bpfire-2 lua]# dmesg
[ 330.411665] lunatik: loading out-of-tree module taints kernel.
[ 330.411680] lunatik: module verification failed: signature and/or required key missing - tainting kernel
[ 330.433955] Kernel module BTF mismatch detected, BTF debug info may be unavailable for some modules
[ 330.767701] missing module BTF, cannot register kfuncs
BPFire chroot build mount /sys/kernel/btf/vmlinux which is
the host binary vmlinux BTF to build against lunatik kernel module,
which result in above error. adjust BPFire kernel build to save
the binary vmlinux BTF to chroot
/lib/modules/6.6.15-ipfire/build/vmlinux for lunatik kernel module.
create the vmlinux.h from the same binary vmlinux BTF for the ebpf https.o
lunatik kernel module is depending on kernel build, adjust the lunatik
build accordingly when kerne upgrade in future.
See https://github.com/vincentmli/BPFire/issues/40
see https://github.com/luainkernel/lunatik/issues/189
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
xdp-loader to load https.o result in error below:
libbpf: loading kernel BTF '/sys/kernel/btf/vmlinux': 0
libbpf: extern (func ksym) 'bpf_luaxdp_run': not found in kernel or module BTFs
libbpf: failed to load object '/usr/lib/bpf/https.o'
libxdp: Failed to load program filter_https: Invalid argument
Couldn't attach XDP program on iface 'green0': Invalid argument(-22)
xdp-tools/xdp-loader is built statically with libbpf 1.2
should not be xdp-loader libbpf issue
still try to upgrade bpfire libbpf to 1.3.0 for testing
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
kernel requires module to be signed, disable force
signing for now.
insmod: ERROR: could not insert module /lib/modules/6.6.15-ipfire/lunatik/lunatik.ko: Key was rejected by service
set CONFIG_MODULE_SIG_FORCE=n
failed to validate module [lunatik] BTF: -22
set CONFIG_MODULE_ALLOW_BTF_MISMATCH=y
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
lunatik kernel modules requires kernel to be built first
so /lib/modules is available for lunatik
lunatik also requires resolve_btfids under:
/lib/modules/$(VER)-$(VERSUFIX)/build/tools/bpf/resolve_btfids/
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
should not send bpfire user profile to ipfire
to confuse ipfire community, bpfire could setup
such profile collection in the future.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
