kernel/tools/testing/selftests/net/udpgso.c, branch linux-5.2.yHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-5.2.y2019-10-07T16:58:24Zudp: only do GSO if # of segs > 12019-10-07T16:58:24ZJosh Huntjohunt@akamai.com2019-10-02T17:29:23Zurn:sha1:d6870bbdacd64f94254338d6c9558fdad7c0ac8b
[ Upstream commit 4094871db1d65810acab3d57f6089aa39ef7f648 ]
Prior to this change an application sending <= 1MSS worth of data and
enabling UDP GSO would fail if the system had SW GSO enabled, but the
same send would succeed if HW GSO offload is enabled. In addition to this
inconsistency the error in the SW GSO case does not get back to the
application if sending out of a real device so the user is unaware of this
failure.
With this change we only perform GSO if the # of segments is > 1 even
if the application has enabled segmentation. I've also updated the
relevant udpgso selftests.
Fixes: bec1f6f69736 ("udp: generate gso with UDP_SEGMENT")
Signed-off-by: Josh Hunt <johunt@akamai.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
selftest/net: Remove duplicate header2019-03-04T19:35:51ZSouptick Joarderjrdr.linux@gmail.com2019-03-04T18:20:48Zurn:sha1:9e9322e5d28e433f1f25f01ffa0aa5762c75dad6
Remove duplicate header which is included twice.
Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
selftests/net: udpgso: test small gso_size boundary conditions2018-06-04T13:49:39ZWillem de Bruijnwillemb@google.com2018-05-31T16:14:39Zurn:sha1:00f333e8d64d9064e636fe4024f6281e2b035a4c
Verify that udpgso can generate segments smaller than device mtu, down
to the extreme case of 1B gso_size.
Verify that irrespective of gso_size, udpgso restricts the number of
segments it will generate per call (UDP_MAX_SEGMENTS).
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
selftests: udp gso with corking2018-04-26T19:09:52ZWillem de Bruijnwillemb@google.com2018-04-26T17:42:24Zurn:sha1:3f12817fe3827b83e757617c2ff99f0ab088f5b9
Corked sockets take a different path to construct a udp datagram than
the lockless fast path. Test this alternate path.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
selftests: udp gso with connected sockets2018-04-26T19:09:52ZWillem de Bruijnwillemb@google.com2018-04-26T17:42:23Zurn:sha1:e5b2d91c2d12c197e9863def909a46302b45aa01
Connected sockets use path mtu instead of device mtu.
Test this path by inserting a route mtu that is lower than the device
mtu. Verify that the path mtu for the connection matches this lower
number, then run the same test as in the connectionless case.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
selftests: udp gso2018-04-26T19:09:40ZWillem de Bruijnwillemb@google.com2018-04-26T17:42:22Zurn:sha1:a160725780e3e086cf936722b0267408f17fceaa
Validate udp gso, including edge cases (such as min/max gso sizes).
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>