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cxgb4vf: Forcefully link up virtual interfaces

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The Virtual Interfaces are connected to an internal switch on the chip
which allows VIs attached to the same port to talk to each other even
when the port link is down.  As a result, we generally want to always
report a VI's link as being "up".

Based on the original work by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun Vynipadath <arjun@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arjun Vynipadath 2018-03-01 15:01:04 +05:30 committed by David S. Miller
parent 413033149c
commit 0913667ab3
1 changed files with 11 additions and 3 deletions
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14
drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c
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@ -155,8 +155,6 @@ void t4vf_os_link_changed(struct adapter *adapter, int pidx, int link_ok)
const char *fc; const char *fc;
const struct port_info *pi = netdev_priv(dev); const struct port_info *pi = netdev_priv(dev);
netif_carrier_on(dev);
switch (pi->link_cfg.speed) { switch (pi->link_cfg.speed) {
case 100: case 100:
s = "100Mbps"; s = "100Mbps";
@ -202,7 +200,6 @@ void t4vf_os_link_changed(struct adapter *adapter, int pidx, int link_ok)
netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s, fc); netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s, fc);
} else { } else {
netif_carrier_off(dev);
netdev_info(dev, "link down\n"); netdev_info(dev, "link down\n");
} }
} }
@ -278,6 +275,17 @@ static int link_start(struct net_device *dev)
*/ */
if (ret == 0) if (ret == 0)
ret = t4vf_enable_vi(pi->adapter, pi->viid, true, true); ret = t4vf_enable_vi(pi->adapter, pi->viid, true, true);
/* The Virtual Interfaces are connected to an internal switch on the
* chip which allows VIs attached to the same port to talk to each
* other even when the port link is down. As a result, we generally
* want to always report a VI's link as being "up", provided there are
* no errors in enabling vi.
*/
if (ret == 0)
netif_carrier_on(dev);
return ret; return ret;
} }