kernel/linux.git/net/core/selftests.c, branch v6.12.80

net: selftests: fix TCP packet checksum

2025-07-06T09:01:41+00:00

[ Upstream commit 8d89661a36dd3bb8c9902cff36dc0c144dce3faf ] The length in the pseudo header should be the length of the L3 payload AKA the L4 header+payload. The selftest code builds the packet from the lower layers up, so all the headers are pushed already when it constructs L4. We need to subtract the lower layer headers from skb->len. Fixes: 3e1e58d64c3d ("net: add generic selftest support") Signed-off-by: Jakub Kicinski Reviewed-by: Gerhard Engleder Reported-by: Oleksij Rempel Tested-by: Oleksij Rempel Reviewed-by: Oleksij Rempel Link: https://patch.msgid.link/20250624183258.3377740-1-kuba@kernel.org Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

net: selftests: initialize TCP header and skb payload with zero

2025-05-02T05:59:06+00:00

commit 9e8d1013b0c38910cbc9e60de74dbe883878469d upstream. Zero-initialize TCP header via memset() to avoid garbage values that may affect checksum or behavior during test transmission. Also zero-fill allocated payload and padding regions using memset() after skb_put(), ensuring deterministic content for all outgoing test packets. Fixes: 3e1e58d64c3d ("net: add generic selftest support") Signed-off-by: Oleksij Rempel Cc: stable@vger.kernel.org Reviewed-by: Simon Horman Link: https://patch.msgid.link/20250416160125.2914724-1-o.rempel@pengutronix.de Signed-off-by: Paolo Abeni Signed-off-by: Greg Kroah-Hartman

net: fill in MODULE_DESCRIPTION()s under net/core

2023-10-28T10:29:27+00:00

W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Reviewed-by: Oleksij Rempel Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

net: selftests: use ethtool_sprintf()

2023-10-27T15:09:26+00:00

During a W=1 build GCC 13.2 says: net/core/selftests.c: In function ‘net_selftest_get_strings’: net/core/selftests.c:404:52: error: ‘%s’ directive output may be truncated writing up to 279 bytes into a region of size 28 [-Werror=format-truncation=] 404 | snprintf(p, ETH_GSTRING_LEN, "%2d. %s", i + 1, | ^~ net/core/selftests.c:404:17: note: ‘snprintf’ output between 5 and 284 bytes into a destination of size 32 404 | snprintf(p, ETH_GSTRING_LEN, "%2d. %s", i + 1, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 405 | net_selftests[i].name); | ~~~~~~~~~~~~~~~~~~~~~~ avoid it by using ethtool_sprintf(). Reviewed-by: Oleksij Rempel Tested-by: Oleksij Rempel Link: https://lore.kernel.org/r/20231026022916.566661-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

net: core: constify mac addrs in selftests

2021-10-24T12:59:44+00:00

Get it ready for constant netdev->dev_addr. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

net: selftests: add MTU test

2021-07-22T07:52:04+00:00

Test if we actually can send/receive packets with MTU size. This kind of issue was detected on ASIX HW with bogus EEPROM. Signed-off-by: Oleksij Rempel Signed-off-by: David S. Miller

net: add generic selftest support

2021-04-20T23:08:02+00:00

Port some parts of the stmmac selftest and reuse it as basic generic selftest library. This patch was tested with following combinations: - iMX6DL FEC -> AT8035 - iMX6DL FEC -> SJA1105Q switch -> KSZ8081 - iMX6DL FEC -> SJA1105Q switch -> KSZ9031 - AR9331 ag71xx -> AR9331 PHY - AR9331 ag71xx -> AR9331 switch -> AR9331 PHY Signed-off-by: Oleksij Rempel Signed-off-by: David S. Miller