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igc: correctly update RCTL when changing multicast filters.

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Fix clearing of bits in RCTL for the non-bpf/non-allmulti case.
Update RCTL after modifying the multicast filter registers as per
the Linux driver.

This fixes LACP on igc interfaces, where incoming LACP multicasti
control packets were being dropped.

Obtained from:	Rubicon Communications, LLC ("Netgate")

(cherry picked from commit 5a3eb6207a)
This commit is contained in:
Peter Grehan 2021-10-12 03:49:01 +10:00
parent 4a36455c41
commit a4c22552b8
1 changed files with 3 additions and 3 deletions
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6
sys/dev/igc/if_igc.c
View file

@ -1172,12 +1172,12 @@ igc_if_multi_set(if_ctx_t ctx)
reg_rctl |= IGC_RCTL_MPE;
reg_rctl &= ~IGC_RCTL_UPE;
} else
reg_rctl = ~(IGC_RCTL_UPE | IGC_RCTL_MPE);
IGC_WRITE_REG(&adapter->hw, IGC_RCTL, reg_rctl);
reg_rctl &= ~(IGC_RCTL_UPE | IGC_RCTL_MPE);
if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
igc_update_mc_addr_list(&adapter->hw, mta, mcnt);
IGC_WRITE_REG(&adapter->hw, IGC_RCTL, reg_rctl);
}
/*********************************************************************