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ice: Add ethtool private flag to make forcing link down optional 

Add new infrastructure for implementing ethtool private flags using the
existing pf->flags bitmap to store them, and add the link-down-on-close
ethtool private flag to optionally bring down the PHY link when the
interface is administratively downed.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Bruce Allan 2018-12-19 10:03:26 -08:00 committed by Jeff Kirsher
parent b6f934f027
commit ab4ab73fc1
3 changed files with 95 additions and 6 deletions
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1
drivers/net/ethernet/intel/ice/ice.h
View File

@ -270,6 +270,7 @@ enum ice_pf_flags {
ICE_FLAG_RSS_ENA,
ICE_FLAG_SRIOV_ENA,
ICE_FLAG_SRIOV_CAPABLE,
ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA,
ICE_PF_FLAGS_NBITS /* must be last */
};

86
drivers/net/ethernet/intel/ice/ice_ethtool.c
View File

@ -114,6 +114,22 @@ static const u32 ice_regs_dump_list[] = {
QRX_ITR(0),
};
struct ice_priv_flag {
char name[ETH_GSTRING_LEN];
u32 bitno; /* bit position in pf->flags */
};
#define ICE_PRIV_FLAG(_name, _bitno) { \
.name = _name, \
.bitno = _bitno, \
}
static const struct ice_priv_flag ice_gstrings_priv_flags[] = {
ICE_PRIV_FLAG("link-down-on-close", ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA),
};
#define ICE_PRIV_FLAG_ARRAY_SIZE ARRAY_SIZE(ice_gstrings_priv_flags)
/**
* ice_nvm_version_str - format the NVM version strings
* @hw: ptr to the hardware info
@ -152,6 +168,7 @@ ice_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
sizeof(drvinfo->fw_version));
strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
sizeof(drvinfo->bus_info));
drvinfo->n_priv_flags = ICE_PRIV_FLAG_ARRAY_SIZE;
}
static int ice_get_regs_len(struct net_device __always_unused *netdev)
@ -292,6 +309,13 @@ static void ice_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
p += ETH_GSTRING_LEN;
}
break;
case ETH_SS_PRIV_FLAGS:
for (i = 0; i < ICE_PRIV_FLAG_ARRAY_SIZE; i++) {
snprintf(p, ETH_GSTRING_LEN, "%s",
ice_gstrings_priv_flags[i].name);
p += ETH_GSTRING_LEN;
}
break;
default:
break;
@ -321,6 +345,64 @@ ice_set_phys_id(struct net_device *netdev, enum ethtool_phys_id_state state)
return 0;
}
/**
* ice_get_priv_flags - report device private flags
* @netdev: network interface device structure
*
* The get string set count and the string set should be matched for each
* flag returned. Add new strings for each flag to the ice_gstrings_priv_flags
* array.
*
* Returns a u32 bitmap of flags.
*/
static u32 ice_get_priv_flags(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u32 i, ret_flags = 0;
for (i = 0; i < ICE_PRIV_FLAG_ARRAY_SIZE; i++) {
const struct ice_priv_flag *priv_flag;
priv_flag = &ice_gstrings_priv_flags[i];
if (test_bit(priv_flag->bitno, pf->flags))
ret_flags |= BIT(i);
}
return ret_flags;
}
/**
* ice_set_priv_flags - set private flags
* @netdev: network interface device structure
* @flags: bit flags to be set
*/
static int ice_set_priv_flags(struct net_device *netdev, u32 flags)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u32 i;
if (flags > BIT(ICE_PRIV_FLAG_ARRAY_SIZE))
return -EINVAL;
for (i = 0; i < ICE_PRIV_FLAG_ARRAY_SIZE; i++) {
const struct ice_priv_flag *priv_flag;
priv_flag = &ice_gstrings_priv_flags[i];
if (flags & BIT(i))
set_bit(priv_flag->bitno, pf->flags);
else
clear_bit(priv_flag->bitno, pf->flags);
}
return 0;
}
static int ice_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
@ -344,6 +426,8 @@ static int ice_get_sset_count(struct net_device *netdev, int sset)
* not safe.
*/
return ICE_ALL_STATS_LEN(netdev);
case ETH_SS_PRIV_FLAGS:
return ICE_PRIV_FLAG_ARRAY_SIZE;
default:
return -EOPNOTSUPP;
}
@ -1753,6 +1837,8 @@ static const struct ethtool_ops ice_ethtool_ops = {
.get_strings = ice_get_strings,
.set_phys_id = ice_set_phys_id,
.get_ethtool_stats = ice_get_ethtool_stats,
.get_priv_flags = ice_get_priv_flags,
.set_priv_flags = ice_set_priv_flags,
.get_sset_count = ice_get_sset_count,
.get_rxnfc = ice_get_rxnfc,
.get_ringparam = ice_get_ringparam,

14
drivers/net/ethernet/intel/ice/ice_main.c
View File

@ -3029,7 +3029,7 @@ static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
*/
int ice_down(struct ice_vsi *vsi)
{
int i, tx_err, rx_err, link_err;
int i, tx_err, rx_err, link_err = 0;
/* Caller of this function is expected to set the
* vsi->state __ICE_DOWN bit
@ -3054,11 +3054,13 @@ int ice_down(struct ice_vsi *vsi)
ice_napi_disable_all(vsi);
link_err = ice_force_phys_link_state(vsi, false);
if (link_err)
netdev_err(vsi->netdev,
"Failed to set physical link down, VSI %d error %d\n",
vsi->vsi_num, link_err);
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
link_err = ice_force_phys_link_state(vsi, false);
if (link_err)
netdev_err(vsi->netdev,
"Failed to set physical link down, VSI %d error %d\n",
vsi->vsi_num, link_err);
}
ice_for_each_txq(vsi, i)
ice_clean_tx_ring(vsi->tx_rings[i]);