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net: atlantic: better loopback mode handling

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Add checks to not enable multiple loopback modes simultaneously,
It was also discovered that for dma loopback to function correctly
promisc mode should be enabled on device.

Fixes: ea4b4d7fc1 ("net: atlantic: loopback tests via private flags")
Signed-off-by: Nikita Danilov <ndanilov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikita Danilov 2020-02-14 18:44:54 +03:00 committed by David S. Miller
parent f08a464c27
commit b42726fcf7
2 changed files with 13 additions and 5 deletions
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5
drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
View File

@ -722,6 +722,11 @@ static int aq_ethtool_set_priv_flags(struct net_device *ndev, u32 flags)
if (flags & ~AQ_PRIV_FLAGS_MASK)
return -EOPNOTSUPP;
if (hweight32((flags | priv_flags) & AQ_HW_LOOPBACK_MASK) > 1) {
netdev_info(ndev, "Can't enable more than one loopback simultaneously\n");
return -EINVAL;
}
cfg->priv_flags = flags;
if ((priv_flags ^ flags) & BIT(AQ_HW_LOOPBACK_DMA_NET)) {

13
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
View File

@ -885,13 +885,16 @@ static int hw_atl_b0_hw_packet_filter_set(struct aq_hw_s *self,
{
struct aq_nic_cfg_s *cfg = self->aq_nic_cfg;
unsigned int i = 0U;
u32 vlan_promisc;
u32 l2_promisc;
hw_atl_rpfl2promiscuous_mode_en_set(self,
IS_FILTER_ENABLED(IFF_PROMISC));
l2_promisc = IS_FILTER_ENABLED(IFF_PROMISC) ||
!!(cfg->priv_flags & BIT(AQ_HW_LOOPBACK_DMA_NET));
vlan_promisc = l2_promisc || cfg->is_vlan_force_promisc;
hw_atl_rpf_vlan_prom_mode_en_set(self,
IS_FILTER_ENABLED(IFF_PROMISC) ||
cfg->is_vlan_force_promisc);
hw_atl_rpfl2promiscuous_mode_en_set(self, l2_promisc);
hw_atl_rpf_vlan_prom_mode_en_set(self, vlan_promisc);
hw_atl_rpfl2multicast_flr_en_set(self,
IS_FILTER_ENABLED(IFF_ALLMULTI) &&