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netdevsim: add FEC settings support 

Add support for ethtool FEC and some ethtool error injection.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2021-03-29 20:59:53 -07:00 committed by David S. Miller
parent 1e5d1f69d9
commit 0d7f76dc11
2 changed files with 39 additions and 0 deletions
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36
drivers/net/netdevsim/ethtool.c
View File

@ -77,6 +77,34 @@ static int nsim_set_ringparam(struct net_device *dev,
return 0;
}
static int
nsim_get_fecparam(struct net_device *dev, struct ethtool_fecparam *fecparam)
{
struct netdevsim *ns = netdev_priv(dev);
if (ns->ethtool.get_err)
return -ns->ethtool.get_err;
memcpy(fecparam, &ns->ethtool.fec, sizeof(ns->ethtool.fec));
return 0;
}
static int
nsim_set_fecparam(struct net_device *dev, struct ethtool_fecparam *fecparam)
{
struct netdevsim *ns = netdev_priv(dev);
u32 fec;
if (ns->ethtool.set_err)
return -ns->ethtool.set_err;
memcpy(&ns->ethtool.fec, fecparam, sizeof(ns->ethtool.fec));
fec = fecparam->fec;
if (fec == ETHTOOL_FEC_AUTO)
fec |= ETHTOOL_FEC_OFF;
fec |= ETHTOOL_FEC_NONE;
ns->ethtool.fec.active_fec = 1 << (fls(fec) - 1);
return 0;
}
static const struct ethtool_ops nsim_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_ALL_PARAMS,
.get_pause_stats = nsim_get_pause_stats,
@ -86,6 +114,8 @@ static const struct ethtool_ops nsim_ethtool_ops = {
.get_coalesce = nsim_get_coalesce,
.get_ringparam = nsim_get_ringparam,
.set_ringparam = nsim_set_ringparam,
.get_fecparam = nsim_get_fecparam,
.set_fecparam = nsim_set_fecparam,
};
static void nsim_ethtool_ring_init(struct netdevsim *ns)
@ -104,8 +134,14 @@ void nsim_ethtool_init(struct netdevsim *ns)
nsim_ethtool_ring_init(ns);
ns->ethtool.fec.fec = ETHTOOL_FEC_NONE;
ns->ethtool.fec.active_fec = ETHTOOL_FEC_NONE;
ethtool = debugfs_create_dir("ethtool", ns->nsim_dev_port->ddir);
debugfs_create_u32("get_err", 0600, ethtool, &ns->ethtool.get_err);
debugfs_create_u32("set_err", 0600, ethtool, &ns->ethtool.set_err);
dir = debugfs_create_dir("pause", ethtool);
debugfs_create_bool("report_stats_rx", 0600, dir,
&ns->ethtool.pauseparam.report_stats_rx);

3
drivers/net/netdevsim/netdevsim.h
View File

@ -60,9 +60,12 @@ struct nsim_ethtool_pauseparam {
};
struct nsim_ethtool {
u32 get_err;
u32 set_err;
struct nsim_ethtool_pauseparam pauseparam;
struct ethtool_coalesce coalesce;
struct ethtool_ringparam ring;
struct ethtool_fecparam fec;
};
struct netdevsim {