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| author | Serge Semin <fancer.lancer@gmail.com> | 2021-10-27 21:27:32 +0300 |
|---|---|---|
| committer | Serge Semin <fancer.lancer@gmail.com> | 2026-08-13 20:38:42 +0300 |
| commit | 90b9a356d33393439f259f98443a85a19a09c3b5 (patch) | |
| tree | 8c9d7ca8baafed709079725d9ebab49350445204 | |
| parent | 451f0f6a6e2e121cce69f24b702942ea4f4c245f (diff) | |
| download | linux-90b9a356d33393439f259f98443a85a19a09c3b5.tar.gz linux-90b9a356d33393439f259f98443a85a19a09c3b5.zip | |
net: stmmac: Permit having the multicast-filter table of zero size
At least for DW GMAC and DW x(L)GMAC it is possible to have the imperfect
filtering disabled during the IP-core synthesize. In that case the
functionality of the DA hash-based filter will be just unavailable. Let's
cover that case by permitting the "snps,multicast-filter-bins" property to
have a zero value. That will effectively disable the multicast filtering
in the core-ops->set_filter() methods.
Note this modification won't affect for the DW MAC100 HW code since by
design it assumes that the hash-based filtering is always available with
the table of 64-bins size. Without the HW-manual I can't say whether it's
right or wrong so we have to leave it as is for now.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index b02a557c67e5d..e912383156e7c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -40,6 +40,7 @@ static int dwmac1000_validate_mcast_bins(struct device *dev, int mcast_bins) int x = mcast_bins; switch (x) { + case 0: case HASH_TABLE_SIZE: case 128: case 256: |