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net:ethernet:aquantia: Fix for multicast filter handling.

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Since the HW supports up to 32 multicast filters we should
track count of multicast filters to avoid overflow.
If we attempt to add >32 multicast filter - just set NETIF_ALLMULTI flag
instead.

Fixes: 94f6c9e4cdf6 ("net: ethernet: aquantia: Support for NIC-specific code")
Signed-off-by: Igor Russkikh <Igor.Russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Igor Russkikh 2017-08-28 21:52:12 +03:00 committed by David S. Miller
parent bd8ed4415f
commit b21f502f84
1 changed files with 16 additions and 1 deletions
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17
drivers/net/ethernet/aquantia/atlantic/aq_nic.c
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@ -669,11 +669,26 @@ int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
netdev_for_each_mc_addr(ha, ndev) { netdev_for_each_mc_addr(ha, ndev) {
ether_addr_copy(self->mc_list.ar[i++], ha->addr); ether_addr_copy(self->mc_list.ar[i++], ha->addr);
++self->mc_list.count; ++self->mc_list.count;
if (i >= AQ_CFG_MULTICAST_ADDRESS_MAX)
break;
} }
return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw, if (i >= AQ_CFG_MULTICAST_ADDRESS_MAX) {
/* Number of filters is too big: atlantic does not support this.
* Force all multi filter to support this.
* With this we disable all UC filters and setup "all pass"
* multicast mask
*/
self->packet_filter |= IFF_ALLMULTI;
self->aq_hw->aq_nic_cfg->mc_list_count = 0;
return self->aq_hw_ops.hw_packet_filter_set(self->aq_hw,
self->packet_filter);
} else {
return self->aq_hw_ops.hw_multicast_list_set(self->aq_hw,
self->mc_list.ar, self->mc_list.ar,
self->mc_list.count); self->mc_list.count);
}
} }
int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu) int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)