ethtool: set link modes related data with LINKMODES_SET request
Implement LINKMODES_SET netlink request to set advertised linkmodes and related attributes as ETHTOOL_SLINKSETTINGS and ETHTOOL_SSET commands do. The request allows setting autonegotiation flag, speed, duplex and advertised link modes. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kubecek
David S. Miller
parent
f625aa9be8
commit
bfbcfe2032
|
|
@ -183,6 +183,7 @@ Userspace to kernel:
|
|||
``ETHTOOL_MSG_LINKINFO_GET`` get link settings
|
||||
``ETHTOOL_MSG_LINKINFO_SET`` set link settings
|
||||
``ETHTOOL_MSG_LINKMODES_GET`` get link modes info
|
||||
``ETHTOOL_MSG_LINKMODES_SET`` set link modes info
|
||||
===================================== ================================
|
||||
|
||||
Kernel to userspace:
|
||||
|
|
@ -366,6 +367,30 @@ list.
|
|||
devices supporting the request).
|
||||
|
||||
|
||||
LINKMODES_SET
|
||||
=============
|
||||
|
||||
Request contents:
|
||||
|
||||
==================================== ====== ==========================
|
||||
``ETHTOOL_A_LINKMODES_HEADER`` nested request header
|
||||
``ETHTOOL_A_LINKMODES_AUTONEG`` u8 autonegotiation status
|
||||
``ETHTOOL_A_LINKMODES_OURS`` bitset advertised link modes
|
||||
``ETHTOOL_A_LINKMODES_PEER`` bitset partner link modes
|
||||
``ETHTOOL_A_LINKMODES_SPEED`` u32 link speed (Mb/s)
|
||||
``ETHTOOL_A_LINKMODES_DUPLEX`` u8 duplex mode
|
||||
==================================== ====== ==========================
|
||||
|
||||
``ETHTOOL_A_LINKMODES_OURS`` bit set allows setting advertised link modes. If
|
||||
autonegotiation is on (either set now or kept from before), advertised modes
|
||||
are not changed (no ``ETHTOOL_A_LINKMODES_OURS`` attribute) and at least one
|
||||
of speed and duplex is specified, kernel adjusts advertised modes to all
|
||||
supported modes matching speed, duplex or both (whatever is specified). This
|
||||
autoselection is done on ethtool side with ioctl interface, netlink interface
|
||||
is supposed to allow requesting changes without knowing what exactly kernel
|
||||
supports.
|
||||
|
||||
|
||||
Request translation
|
||||
===================
|
||||
|
||||
|
|
@ -379,6 +404,7 @@ have their netlink replacement yet.
|
|||
``ETHTOOL_GSET`` ``ETHTOOL_MSG_LINKINFO_GET``
|
||||
``ETHTOOL_MSG_LINKMODES_GET``
|
||||
``ETHTOOL_SSET`` ``ETHTOOL_MSG_LINKINFO_SET``
|
||||
``ETHTOOL_MSG_LINKMODES_SET``
|
||||
``ETHTOOL_GDRVINFO`` n/a
|
||||
``ETHTOOL_GREGS`` n/a
|
||||
``ETHTOOL_GWOL`` n/a
|
||||
|
|
@ -454,6 +480,7 @@ have their netlink replacement yet.
|
|||
``ETHTOOL_GLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_GET``
|
||||
``ETHTOOL_MSG_LINKMODES_GET``
|
||||
``ETHTOOL_SLINKSETTINGS`` ``ETHTOOL_MSG_LINKINFO_SET``
|
||||
``ETHTOOL_MSG_LINKMODES_SET``
|
||||
``ETHTOOL_PHY_GTUNABLE`` n/a
|
||||
``ETHTOOL_PHY_STUNABLE`` n/a
|
||||
``ETHTOOL_GFECPARAM`` n/a
|
||||
|
|
|
|||
|
|
@ -18,6 +18,7 @@ enum {
|
|||
ETHTOOL_MSG_LINKINFO_GET,
|
||||
ETHTOOL_MSG_LINKINFO_SET,
|
||||
ETHTOOL_MSG_LINKMODES_GET,
|
||||
ETHTOOL_MSG_LINKMODES_SET,
|
||||
|
||||
/* add new constants above here */
|
||||
__ETHTOOL_MSG_USER_CNT,
|
||||
|
|
|
|||
|
|
@ -138,3 +138,238 @@ const struct ethnl_request_ops ethnl_linkmodes_request_ops = {
|
|||
.reply_size = linkmodes_reply_size,
|
||||
.fill_reply = linkmodes_fill_reply,
|
||||
};
|
||||
|
||||
/* LINKMODES_SET */
|
||||
|
||||
struct link_mode_info {
|
||||
int speed;
|
||||
u8 duplex;
|
||||
};
|
||||
|
||||
#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \
|
||||
[ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \
|
||||
.speed = SPEED_ ## _speed, \
|
||||
.duplex = __DUPLEX_ ## _duplex \
|
||||
}
|
||||
#define __DUPLEX_Half DUPLEX_HALF
|
||||
#define __DUPLEX_Full DUPLEX_FULL
|
||||
#define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
|
||||
[ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
|
||||
.speed = SPEED_UNKNOWN, \
|
||||
.duplex = DUPLEX_UNKNOWN, \
|
||||
}
|
||||
|
||||
static const struct link_mode_info link_mode_params[] = {
|
||||
__DEFINE_LINK_MODE_PARAMS(10, T, Half),
|
||||
__DEFINE_LINK_MODE_PARAMS(10, T, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100, T, Half),
|
||||
__DEFINE_LINK_MODE_PARAMS(100, T, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(1000, T, Half),
|
||||
__DEFINE_LINK_MODE_PARAMS(1000, T, Full),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(TP),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(AUI),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(MII),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(BNC),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, T, Full),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(Pause),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
|
||||
__DEFINE_LINK_MODE_PARAMS(2500, X, Full),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(Backplane),
|
||||
__DEFINE_LINK_MODE_PARAMS(1000, KX, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, KX4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, KR, Full),
|
||||
[ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
|
||||
.speed = SPEED_10000,
|
||||
.duplex = DUPLEX_FULL,
|
||||
},
|
||||
__DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(20000, KR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(40000, KR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(40000, CR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(40000, SR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(40000, LR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(56000, KR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(56000, CR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(56000, SR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(56000, LR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(25000, CR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(25000, KR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(25000, SR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, CR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, KR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, KR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, SR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, CR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, SR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(1000, X, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, CR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, SR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, LR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, LRM, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(10000, ER, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(2500, T, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(5000, T, Full),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
|
||||
__DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, KR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, SR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, CR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(50000, DR, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, KR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, SR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, CR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100000, DR2, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(200000, KR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(200000, SR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(200000, DR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(200000, CR4, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(100, T1, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(1000, T1, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(400000, KR8, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(400000, SR8, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),
|
||||
__DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),
|
||||
};
|
||||
|
||||
static const struct nla_policy
|
||||
linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
|
||||
[ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
|
||||
[ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
|
||||
[ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 },
|
||||
[ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED },
|
||||
[ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
|
||||
[ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 },
|
||||
[ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 },
|
||||
};
|
||||
|
||||
/* Set advertised link modes to all supported modes matching requested speed
|
||||
* and duplex values. Called when autonegotiation is on, speed or duplex is
|
||||
* requested but no link mode change. This is done in userspace with ioctl()
|
||||
* interface, move it into kernel for netlink.
|
||||
* Returns true if advertised modes bitmap was modified.
|
||||
*/
|
||||
static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings,
|
||||
bool req_speed, bool req_duplex)
|
||||
{
|
||||
unsigned long *advertising = ksettings->link_modes.advertising;
|
||||
unsigned long *supported = ksettings->link_modes.supported;
|
||||
DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
unsigned int i;
|
||||
|
||||
BUILD_BUG_ON(ARRAY_SIZE(link_mode_params) !=
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
|
||||
bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
|
||||
for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) {
|
||||
const struct link_mode_info *info = &link_mode_params[i];
|
||||
|
||||
if (info->speed == SPEED_UNKNOWN)
|
||||
continue;
|
||||
if (test_bit(i, supported) &&
|
||||
(!req_speed || info->speed == ksettings->base.speed) &&
|
||||
(!req_duplex || info->duplex == ksettings->base.duplex))
|
||||
set_bit(i, advertising);
|
||||
else
|
||||
clear_bit(i, advertising);
|
||||
}
|
||||
|
||||
return !bitmap_equal(old_adv, advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS);
|
||||
}
|
||||
|
||||
static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
|
||||
struct ethtool_link_ksettings *ksettings,
|
||||
bool *mod)
|
||||
{
|
||||
struct ethtool_link_settings *lsettings = &ksettings->base;
|
||||
bool req_speed, req_duplex;
|
||||
int ret;
|
||||
|
||||
*mod = false;
|
||||
req_speed = tb[ETHTOOL_A_LINKMODES_SPEED];
|
||||
req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX];
|
||||
|
||||
ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG],
|
||||
mod);
|
||||
ret = ethnl_update_bitset(ksettings->link_modes.advertising,
|
||||
__ETHTOOL_LINK_MODE_MASK_NBITS,
|
||||
tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names,
|
||||
info->extack, mod);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED],
|
||||
mod);
|
||||
ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX],
|
||||
mod);
|
||||
|
||||
if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg &&
|
||||
(req_speed || req_duplex) &&
|
||||
ethnl_auto_linkmodes(ksettings, req_speed, req_duplex))
|
||||
*mod = true;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
|
||||
{
|
||||
struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
|
||||
struct ethtool_link_ksettings ksettings = {};
|
||||
struct ethtool_link_settings *lsettings;
|
||||
struct ethnl_req_info req_info = {};
|
||||
struct net_device *dev;
|
||||
bool mod = false;
|
||||
int ret;
|
||||
|
||||
ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
|
||||
ETHTOOL_A_LINKMODES_MAX, linkmodes_set_policy,
|
||||
info->extack);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_LINKMODES_HEADER],
|
||||
genl_info_net(info), info->extack, true);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
dev = req_info.dev;
|
||||
if (!dev->ethtool_ops->get_link_ksettings ||
|
||||
!dev->ethtool_ops->set_link_ksettings)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
rtnl_lock();
|
||||
ret = ethnl_ops_begin(dev);
|
||||
if (ret < 0)
|
||||
goto out_rtnl;
|
||||
|
||||
ret = __ethtool_get_link_ksettings(dev, &ksettings);
|
||||
if (ret < 0) {
|
||||
if (info)
|
||||
GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
|
||||
goto out_ops;
|
||||
}
|
||||
lsettings = &ksettings.base;
|
||||
|
||||
ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod);
|
||||
if (ret < 0)
|
||||
goto out_ops;
|
||||
|
||||
if (mod) {
|
||||
ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
|
||||
if (ret < 0)
|
||||
GENL_SET_ERR_MSG(info, "link settings update failed");
|
||||
}
|
||||
|
||||
out_ops:
|
||||
ethnl_ops_complete(dev);
|
||||
out_rtnl:
|
||||
rtnl_unlock();
|
||||
dev_put(dev);
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -638,6 +638,11 @@ static const struct genl_ops ethtool_genl_ops[] = {
|
|||
.dumpit = ethnl_default_dumpit,
|
||||
.done = ethnl_default_done,
|
||||
},
|
||||
{
|
||||
.cmd = ETHTOOL_MSG_LINKMODES_SET,
|
||||
.flags = GENL_UNS_ADMIN_PERM,
|
||||
.doit = ethnl_set_linkmodes,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
|
||||
|
|
|
|||
|
|
@ -335,5 +335,6 @@ extern const struct ethnl_request_ops ethnl_linkinfo_request_ops;
|
|||
extern const struct ethnl_request_ops ethnl_linkmodes_request_ops;
|
||||
|
||||
int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info);
|
||||
int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info);
|
||||
|
||||
#endif /* _NET_ETHTOOL_NETLINK_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue