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2025-04-22net: selftests: initialize TCP header and skb payload with zeroOleksij Rempel
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 <o.rempel@pengutronix.de> Cc: stable@vger.kernel.org Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250416160125.2914724-1-o.rempel@pengutronix.de Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-20net: phy: Support speed selection for PHY loopbackGerhard Engleder
phy_loopback() leaves it to the PHY driver to select the speed of the loopback mode. Thus, the speed of the loopback mode depends on the PHY driver in use. Add support for speed selection to phy_loopback() to enable loopback with defined speeds. Ensure that link up is signaled if speed changes as speed is not allowed to change during link up. Link down and up is necessary for a new speed. Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Link: https://patch.msgid.link/20250312203010.47429-3-gerhard@engleder-embedded.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-10-28net: fill in MODULE_DESCRIPTION()s under net/coreJakub Kicinski
W=1 builds now warn if module is built without a MODULE_DESCRIPTION(). Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-27net: selftests: use ethtool_sprintf()Jakub Kicinski
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 <o.rempel@pengutronix.de> Tested-by: Oleksij Rempel <o.rempel@pengutronix.de> Link: https://lore.kernel.org/r/20231026022916.566661-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-24net: core: constify mac addrs in selftestsJakub Kicinski
Get it ready for constant netdev->dev_addr. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-22net: selftests: add MTU testOleksij Rempel
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 <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-20net: add generic selftest supportOleksij Rempel
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 <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>