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net: stmmac: dwmac1000: Account for the primary MAC address for UC filtering

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The same filter slots are used to store the main MAC address as well as
the address for the unicast filter. Let's account for that when deciding
whether or not to use promisc when programming the UC list in hardware.

Fixes: 47dd7a540b ("net: add support for STMicroelectronics Ethernet controllers.")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260826140500.616466-3-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Maxime Chevallier
2026-08-26 16:04:54 +02:00
committed by Jakub Kicinski
parent d29b399150
commit 9698b6da37
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
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@@ -194,7 +194,7 @@ static void dwmac1000_set_filter(struct mac_device_info *hw,
dwmac1000_set_mchash(ioaddr, mc_filter, mcbitslog2);
/* Handle multiple unicast addresses (perfect filtering) */
if (netdev_uc_count(dev) > perfect_addr_number)
if (netdev_uc_count(dev) + 1 > perfect_addr_number)
/* Switch to promiscuous mode if more than unicast
* addresses are requested than supported by hardware.
*/