Re: [Intel-wired-lan] [PATCH net-next v2 08/13] bnxt: use snapshot in bnxt_cfg_rx_mode

[Stanislav Fomichev <stfomichev@gmail.com>]

On 03/19, Loktionov, Aleksandr wrote:
> 
> 
> > -----Original Message-----
> > From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf
> > Of Stanislav Fomichev
> > Sent: Wednesday, March 18, 2026 4:03 PM
> > To: netdev@vger.kernel.org
> > Cc: davem@davemloft.net; edumazet@google.com; kuba@kernel.org;
> > pabeni@redhat.com; horms@kernel.org; corbet@lwn.net;
> > skhan@linuxfoundation.org; andrew+netdev@lunn.ch;
> > michael.chan@broadcom.com; pavan.chebbi@broadcom.com; Nguyen, Anthony
> > L <anthony.l.nguyen@intel.com>; Kitszel, Przemyslaw
> > <przemyslaw.kitszel@intel.com>; saeedm@nvidia.com; tariqt@nvidia.com;
> > mbloch@nvidia.com; alexanderduyck@fb.com; kernel-team@meta.com;
> > johannes@sipsolutions.net; sd@queasysnail.net; jianbol@nvidia.com;
> > dtatulea@nvidia.com; sdf@fomichev.me; mohsin.bashr@gmail.com; Keller,
> > Jacob E <jacob.e.keller@intel.com>; willemb@google.com;
> > skhawaja@google.com; bestswngs@gmail.com; linux-doc@vger.kernel.org;
> > linux-kernel@vger.kernel.org; intel-wired-lan@lists.osuosl.org; linux-
> > rdma@vger.kernel.org; linux-wireless@vger.kernel.org; linux-
> > kselftest@vger.kernel.org; leon@kernel.org
> > Subject: [Intel-wired-lan] [PATCH net-next v2 08/13] bnxt: use
> > snapshot in bnxt_cfg_rx_mode
> > 
> > With the introduction of ndo_set_rx_mode_async (as discussed in [0])
> > we can call bnxt_cfg_rx_mode directly. Convert bnxt_cfg_rx_mode to use
> > uc/mc snapshots and move its call in bnxt_sp_task to the section that
> > resets BNXT_STATE_IN_SP_TASK. Switch to direct call in
> > bnxt_set_rx_mode.
> > 
> > 0:
> > https://lore.kernel.org/netdev/CACKFLi=5vj8hPqEUKDd8RTw3au5G+zRgQEqjF+
> > 6NZnyoNm90KA@mail.gmail.com/
> > 
> > Cc: Michael Chan <michael.chan@broadcom.com>
> > Cc: Pavan Chebbi <pavan.chebbi@broadcom.com>
> > Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
> > ---
> >  drivers/net/ethernet/broadcom/bnxt/bnxt.c | 24 ++++++++++++++--------
> > -
> >  1 file changed, 15 insertions(+), 9 deletions(-)
> 
> ...
> 
> > -static int bnxt_cfg_rx_mode(struct bnxt *bp)
> > +static int bnxt_cfg_rx_mode(struct bnxt *bp, struct
> > netdev_hw_addr_list *uc,
> > +			    struct netdev_hw_addr_list *mc)
> >  {
> >  	struct net_device *dev = bp->dev;
> >  	struct bnxt_vnic_info *vnic = &bp-
> > >vnic_info[BNXT_VNIC_DEFAULT];
> > @@ -13623,7 +13625,7 @@ static int bnxt_cfg_rx_mode(struct bnxt *bp)
> >  	bool uc_update;
> > 
> >  	netif_addr_lock_bh(dev);
> > -	uc_update = bnxt_uc_list_updated(bp, &dev->uc);
> > +	uc_update = bnxt_uc_list_updated(bp, uc);
> >  	netif_addr_unlock_bh(dev);
> > 
> >  	if (!uc_update)
> > @@ -13642,7 +13644,7 @@ static int bnxt_cfg_rx_mode(struct bnxt *bp)
> >  	if (netdev_uc_count(dev) > (BNXT_MAX_UC_ADDRS - 1)) {
> >  		vnic->rx_mask |=
> > CFA_L2_SET_RX_MASK_REQ_MASK_PROMISCUOUS;
> This limit check uses the live device list, dev->uc.
> In the new async model, the live list can differ from the snapshot.

Oh, yes, good catch! Will do s/netdev_uc_count/netdev_hw_addr_list_count(uc).