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bnxt_en: Always forward VF MAC address to the PF. 

The current code already forwards the VF MAC address to the PF, except
in one case.  If the VF driver gets a valid MAC address from the firmware
during probe time, it will not forward the MAC address to the PF,
incorrectly assuming that the PF already knows the MAC address.  This
causes "ip link show" to show zero VF MAC addresses for this case.

This assumption is not correct.  Newer firmware remembers the VF MAC
address last used by the VF and provides it to the VF driver during
probe.  So we need to always forward the VF MAC address to the PF.

The forwarded MAC address may now be the PF assigned MAC address and so we
need to make sure we approve it for this case.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2018-05-08 03:18:41 -04:00 committed by David S. Miller
parent 7328a23c06
commit 707e7e9660
2 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -8678,8 +8678,8 @@ static int bnxt_init_mac_addr(struct bnxt *bp)
memcpy(bp->dev->dev_addr, vf->mac_addr, ETH_ALEN);
} else {
eth_hw_addr_random(bp->dev);
rc = bnxt_approve_mac(bp, bp->dev->dev_addr);
}
rc = bnxt_approve_mac(bp, bp->dev->dev_addr);
#endif
}
return rc;

3
drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
View File

@ -923,7 +923,8 @@ static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
if (is_valid_ether_addr(req->dflt_mac_addr) &&
((vf->flags & BNXT_VF_TRUST) ||
(!is_valid_ether_addr(vf->mac_addr)))) {
!is_valid_ether_addr(vf->mac_addr) ||
ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
}