Joonwoo Park wrote:
> IMHO even though netdevice is in the promiscuous mode, we should receive all
> of ingress packets.
> This disable the vlan filtering feature when a vlan hw accel configured e1000
> device goes into promiscuous mode.
> This make packets visible to sniffers though it's not vlan id of itself.
> Any check, comments will be appreciated.
Actually I think this patch removes a choice from the user.
Before this patch, the user can sniff all traffic by disabling vlans, or a
specific vlan only by leaving vlans on when going into promisc mode.
After this patch, the user has no choice but to sniff all vlans at all times.
I don't think that that is such a good improvement.
Auke
> Thanks.
>
> Signed-off-by: Joonwoo Park <[EMAIL PROTECTED]>
> ---
> drivers/net/e1000/e1000_main.c | 26 ++++++++++++++++++++------
> 1 files changed, 20 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
> index 72deff0..cdd5c84 100644
> --- a/drivers/net/e1000/e1000_main.c
> +++ b/drivers/net/e1000/e1000_main.c
> @@ -2424,7 +2424,7 @@ e1000_set_multi(struct net_device *netdev)
> struct e1000_adapter *adapter = netdev_priv(netdev);
> struct e1000_hw *hw = &adapter->hw;
> struct dev_mc_list *mc_ptr;
> - uint32_t rctl;
> + uint32_t rctl, ctrl;
> uint32_t hash_value;
> int i, rar_entries = E1000_RAR_ENTRIES;
> int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
> @@ -2441,14 +2441,25 @@ e1000_set_multi(struct net_device *netdev)
> /* Check for Promiscuous and All Multicast modes */
>
> rctl = E1000_READ_REG(hw, RCTL);
> + ctrl = E1000_READ_REG(&adapter->hw, CTRL);
>
> if (netdev->flags & IFF_PROMISC) {
> rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
> - } else if (netdev->flags & IFF_ALLMULTI) {
> - rctl |= E1000_RCTL_MPE;
> - rctl &= ~E1000_RCTL_UPE;
> + if (adapter->hw.mac_type != e1000_ich8lan) {
> + if (ctrl & E1000_CTRL_VME)
> + rctl &= ~E1000_RCTL_VFE;
> + }
> } else {
> - rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
> + if (adapter->hw.mac_type != e1000_ich8lan) {
> + if (ctrl & E1000_CTRL_VME)
> + rctl |= E1000_RCTL_VFE;
> + }
> + if (netdev->flags & IFF_ALLMULTI) {
> + rctl |= E1000_RCTL_MPE;
> + rctl &= ~E1000_RCTL_UPE;
> + } else {
> + rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
> + }
> }
>
> E1000_WRITE_REG(hw, RCTL, rctl);
> @@ -4952,7 +4963,10 @@ e1000_vlan_rx_register(struct net_device *netdev,
> struct vlan_group *grp)
> if (adapter->hw.mac_type != e1000_ich8lan) {
> /* enable VLAN receive filtering */
> rctl = E1000_READ_REG(&adapter->hw, RCTL);
> - rctl |= E1000_RCTL_VFE;
> + if (netdev->flags & IFF_PROMISC)
> + rctl &= ~E1000_RCTL_VFE;
> + else
> + rctl |= E1000_RCTL_VFE;
> rctl &= ~E1000_RCTL_CFIEN;
> E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
> e1000_update_mng_vlan(adapter);
> ---
>
> -
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