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