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nfp: report link speed from NSP

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On the PF prefer the link speed value provided by the NSP.
Refresh port table if needed.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2017-04-04 16:12:27 -07:00 committed by David S. Miller
parent 172f638c93
commit 21d529d5eb
1 changed files with 11 additions and 0 deletions
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11
drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
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@ -49,6 +49,7 @@
#include <linux/ethtool.h>
#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nsp_eth.h"
#include "nfp_net_ctrl.h"
#include "nfp_net.h"
@ -205,6 +206,16 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
if (!netif_carrier_ok(netdev))
return 0;
/* Use link speed from ETH table if available, otherwise try the BAR */
if (nn->eth_port && nfp_net_link_changed_read_clear(nn))
nfp_net_refresh_port_config(nn);
/* Separate if - on FW error the port could've disappeared from table */
if (nn->eth_port) {
cmd->base.speed = nn->eth_port->speed;
cmd->base.duplex = DUPLEX_FULL;
return 0;
}
sts = nn_readl(nn, NFP_NET_CFG_STS);
ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts);