linux_dsm_epyc7002/include
Eric Dumazet 7c6d2ecbda net: be more gentle about silly gso requests coming from user
Recent change in virtio_net_hdr_to_skb() broke some packetdrill tests.

When --mss=XXX option is set, packetdrill always provide gso_type & gso_size
for its inbound packets, regardless of packet size.

	if (packet->tcp && packet->mss) {
		if (packet->ipv4)
			gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
		else
			gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
		gso.gso_size = packet->mss;
	}

Since many other programs could do the same, relax virtio_net_hdr_to_skb()
to no longer return an error, but instead ignore gso settings.

This keeps Willem intent to make sure no malicious packet could
reach gso stack.

Note that TCP stack has a special logic in tcp_set_skb_tso_segs()
to clear gso_size for small packets.

Fixes: 6dd912f826 ("net: check untrusted gso_size at kernel entry")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-28 16:31:30 -07:00
..
acpi
asm-generic arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
clocksource
crypto
drm drm: fix trivial field description cut-and-paste error 2020-05-11 10:48:53 -07:00
dt-bindings
keys
kunit
kvm
linux net: be more gentle about silly gso requests coming from user 2020-05-28 16:31:30 -07:00
math-emu
media
misc
net ipv4: nexthop version of fib_info_nh_uses_dev 2020-05-26 16:06:07 -07:00
pcmcia
ras
rdma
scsi
soc net: dsa: ocelot: the MAC table on Felix is twice as large 2020-05-06 17:15:24 -07:00
sound ALSA: rawmidi: Fix racy buffer resize under concurrent accesses 2020-05-07 22:29:14 +02:00
target
trace RxRPC fixes 2020-05-22 15:53:30 -07:00
uapi usb: raw-gadget: support stalling/halting/wedging endpoints 2020-05-14 12:30:18 +03:00
vdso vdso/datapage: Use correct clock mode name in comment 2020-04-20 19:19:52 +02:00
video
xen