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sfc: Rework efx_set_multicast_hash() 

When !port_enabled, defer the write to reconfigure_mac_wrapper.

Whilst here, simplify the logic now that efx_start_port() always calls
efx_reconfigure_port().

From: Steve Hodgson <shodgson@solarflare.com>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings 2008-09-01 12:49:12 +01:00 committed by Jeff Garzik
parent 3c78708fe8
commit a816f75ac5
1 changed files with 17 additions and 11 deletions
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28
drivers/net/sfc/efx.c
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@ -560,6 +560,12 @@ void __efx_reconfigure_port(struct efx_nic *efx)
EFX_LOG(efx, "reconfiguring MAC from PHY settings on CPU %d\n",
raw_smp_processor_id());
/* Serialise the promiscuous flag with efx_set_multicast_list. */
if (efx_dev_registered(efx)) {
netif_addr_lock_bh(efx->net_dev);
netif_addr_unlock_bh(efx->net_dev);
}
falcon_reconfigure_xmac(efx);
/* Inform kernel of loss/gain of carrier */
@ -1410,26 +1416,19 @@ static int efx_set_mac_address(struct net_device *net_dev, void *data)
return 0;
}
/* Context: netif_tx_lock held, BHs disabled. */
/* Context: netif_addr_lock held, BHs disabled. */
static void efx_set_multicast_list(struct net_device *net_dev)
{
struct efx_nic *efx = netdev_priv(net_dev);
struct dev_mc_list *mc_list = net_dev->mc_list;
union efx_multicast_hash *mc_hash = &efx->multicast_hash;
bool promiscuous;
bool promiscuous = !!(net_dev->flags & IFF_PROMISC);
bool changed = (efx->promiscuous != promiscuous);
u32 crc;
int bit;
int i;
/* Set per-MAC promiscuity flag and reconfigure MAC if necessary */
promiscuous = !!(net_dev->flags & IFF_PROMISC);
if (efx->promiscuous != promiscuous) {
efx->promiscuous = promiscuous;
/* Close the window between efx_stop_port() and efx_flush_all()
* by only queuing work when the port is enabled. */
if (efx->port_enabled)
queue_work(efx->workqueue, &efx->reconfigure_work);
}
efx->promiscuous = promiscuous;
/* Build multicast hash table */
if (promiscuous || (net_dev->flags & IFF_ALLMULTI)) {
@ -1444,6 +1443,13 @@ static void efx_set_multicast_list(struct net_device *net_dev)
}
}
if (!efx->port_enabled)
/* Delay pushing settings until efx_start_port() */
return;
if (changed)
queue_work(efx->workqueue, &efx->reconfigure_work);
/* Create and activate new global multicast hash table */
falcon_set_multicast_hash(efx);
}