linux/tools
Brett A C Sheffield aeb8d48ea9 selftests: net: add test for ipv6 fragmentation
Add selftest for the IPv6 fragmentation regression which affected
several stable kernels.

Commit a18dfa9925 ("ipv6: save dontfrag in cork") was backported to
stable without some prerequisite commits.  This caused a regression when
sending IPv6 UDP packets by preventing fragmentation and instead
returning -1 (EMSGSIZE).

Add selftest to check for this issue by attempting to send a packet
larger than the interface MTU. The packet will be fragmented on a
working kernel, with sendmsg(2) correctly returning the expected number
of bytes sent.  When the regression is present, sendmsg returns -1 and
sets errno to EMSGSIZE.

Link: https://lore.kernel.org/stable/aElivdUXqd1OqgMY@karahi.gladserv.com
Signed-off-by: Brett A C Sheffield <bacs@librecast.net>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250903154925.13481-1-bacs@librecast.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-09 11:43:59 +02:00
..
accounting tools/getdelays: add backward compatibility for taskstats version 2025-08-02 12:01:41 -07:00
arch ARM: 2025-08-29 13:54:26 -07:00
bootconfig bootconfig: Fix negative seeks on 32-bit with LFS enabled 2025-08-21 08:16:31 +09:00
bpf
build
certs
cgroup memcg_slabinfo: Fix use of PG_slab 2025-07-23 11:55:22 +02:00
counter
crypto
debugging
firewire
firmware
gpio
hv tools/hv: fcopy: Fix irregularities with size of ring buffer 2025-07-15 06:25:33 +00:00
iio
include perf-tools fixes for v6.17-rc4 2025-08-27 19:18:51 -07:00
kvm/kvm_stat
laptop
leds
lib libbpf: Add the ability to suppress perf event enablement 2025-08-07 09:01:41 -07:00
memory-model
mm tools/mm: add script to display page state for a given PID and VADDR 2025-07-09 22:41:53 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-04 13:33:00 -07:00
objtool objtool/LoongArch: Get table size correctly if LTO is enabled 2025-08-20 22:23:15 +08:00
pcmcia
perf perf symbol: Add blocking argument to filename__read_build_id 2025-08-25 15:07:18 -07:00
power cpupower: Allow control of boost feature on non-x86 based systems with boost support. 2025-08-15 10:49:14 -06:00
rcu
sched tools/sched: Add dl_bw_dump.py for printing bandwidth accounting info 2025-07-14 10:59:33 +02:00
sched_ext
scripts tools headers: Sync syscall tables with the kernel source 2025-08-18 13:49:25 -07:00
sound
spi
testing selftests: net: add test for ipv6 fragmentation 2025-09-09 11:43:59 +02:00
thermal
time
tracing rtla: Check pkg-config install 2025-08-19 20:32:54 -04:00
usb
verification rv: Add opid per-cpu monitor 2025-07-28 16:47:35 -04:00
virtio
wmi
workqueue
writeback
Makefile