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| author | Serge Semin <fancer.lancer@gmail.com> | 2025-08-21 16:24:53 +0300 |
|---|---|---|
| committer | Serge Semin <fancer.lancer@gmail.com> | 2026-08-13 20:35:10 +0300 |
| commit | 50fc57124e412b937af7fc3d7bd43ddc6ba0a649 (patch) | |
| tree | 4e1833402a30f2e0c512c075d8e10486e82b6a9c | |
| parent | bd15404789142bf23777cd1f431029e06572ab5e (diff) | |
| download | linux-gmac/ext2/vlan.tar.gz linux-gmac/ext2/vlan.zip | |
net: stmmac: vlan: Extend VLAN filters devices supportgmac/ext2/vlan
DW GMAC, DW QoS Ether and DW XGMAC/XLGMAC IP-core supports three types of
the VLAN filters:
1. Basic Rx VLAN perfect filter. In some extent it's available on all DW
controllers. But in case of DW GMAC the S-VLAN tagged frames filtering has
been supported since v3.70a.
2. Extended Rx VLAN perfect filter. It's optionally available on the
modern IP-cores: DW QoS Ether, DW XGMAC, DW XLGMAC, etc. The feature has
been introduced as a substitution to the Basic Rx VLAn perfect filter to
extend the amount of the VLAN tags to filter.
3. Rx VLAN hash filter. It's optionally available on all modern IP-cores
and on DW GMACs since v3.70a. As it can be inferred from the name the
filter implies to use hash-table as a set of the allowed the VLAN-tags.
The notable particularity of this filter is that it' S-VLAN capability is
synchronized with the Basic Rx VLAN perfect filter.
So as can be seen from the description at least one VLAN filter is always
available on the modern DW network controllers, meanwhile the extended Rx
VLAN and hash-based filters are optional. Moreover the current VLAN tag
filters implementation in the driver support all of these filters working
complementarily. Thus the driver can be freely converted to advertise the
HW-accelerated VLAN C/S-Tags filtering for all the modern DW network
controllers: DW GMAC v3.7x, DW QoS Ether and DW XGMAC/XLGMAC.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 163ab3f0ad2b..04ffac733947 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -8805,7 +8805,10 @@ static int __stmmac_dvr_probe(struct device *device, ndev->features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX; ndev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX; - if (priv->dma_cap.vlhash || priv->dma_cap.nrvf_num) { + /* VLAN filtering is implemented for modern IP-cores only */ + if ((priv->plat->core_type == DWMAC_CORE_GMAC && + priv->synopsys_id >= DWMAC_CORE_3_70) || + dwmac_is_xmac(priv->plat->core_type)) { ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_STAG_FILTER; ndev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | |