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s390/qeth: improve QUERY CARD INFO processing
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Move all the HW reply data parsing into qeth_query_card_info_cb(), and
use common ethtool enums for transporting the information back to the
caller.

Also only look at the .port_speed field when we couldn't determine the
speed from the .card_type field, and introduce some 'default' cases for
SPEED_UNKNOWN, PORT_OTHER and DUPLEX_UNKNOWN.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Julian Wiedmann authored and Jakub Kicinski committed Nov 19, 2020
1 parent 88ad4d9 commit 4139b2b
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Showing 3 changed files with 79 additions and 76 deletions.
14 changes: 7 additions & 7 deletions drivers/s390/net/qeth_core.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -701,6 +701,12 @@ enum qeth_pnso_mode {
QETH_PNSO_ADDR_INFO,
};

struct qeth_link_info {
u32 speed;
u8 duplex;
u8 port;
};

#define QETH_BROADCAST_WITH_ECHO 0x01
#define QETH_BROADCAST_WITHOUT_ECHO 0x02
struct qeth_card_info {
Expand Down Expand Up @@ -796,12 +802,6 @@ struct qeth_rx {
u8 bufs_refill;
};

struct carrier_info {
__u8 card_type;
__u16 port_mode;
__u32 port_speed;
};

struct qeth_switch_info {
__u32 capabilities;
__u32 settings;
Expand Down Expand Up @@ -1108,7 +1108,7 @@ void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int qeth_query_switch_attributes(struct qeth_card *card,
struct qeth_switch_info *sw_info);
int qeth_query_card_info(struct qeth_card *card,
struct carrier_info *carrier_info);
struct qeth_link_info *link_info);
int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
enum qeth_ipa_isolation_modes mode);

Expand Down
67 changes: 60 additions & 7 deletions drivers/s390/net/qeth_core_main.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4868,23 +4868,76 @@ static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
static int qeth_query_card_info_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
struct qeth_link_info *link_info = reply->param;
struct qeth_query_card_info *card_info;

QETH_CARD_TEXT(card, 2, "qcrdincb");
if (qeth_setadpparms_inspect_rc(cmd))
return -EIO;

card_info = &cmd->data.setadapterparms.data.card_info;
carrier_info->card_type = card_info->card_type;
carrier_info->port_mode = card_info->port_mode;
carrier_info->port_speed = card_info->port_speed;
netdev_dbg(card->dev,
"card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
card_info->card_type, card_info->port_mode,
card_info->port_speed);

switch (card_info->port_mode) {
case CARD_INFO_PORTM_FULLDUPLEX:
link_info->duplex = DUPLEX_FULL;
break;
case CARD_INFO_PORTM_HALFDUPLEX:
link_info->duplex = DUPLEX_HALF;
break;
default:
link_info->duplex = DUPLEX_UNKNOWN;
}

switch (card_info->card_type) {
case CARD_INFO_TYPE_1G_COPPER_A:
case CARD_INFO_TYPE_1G_COPPER_B:
link_info->speed = SPEED_1000;
link_info->port = PORT_TP;
break;
case CARD_INFO_TYPE_1G_FIBRE_A:
case CARD_INFO_TYPE_1G_FIBRE_B:
link_info->speed = SPEED_1000;
link_info->port = PORT_FIBRE;
break;
case CARD_INFO_TYPE_10G_FIBRE_A:
case CARD_INFO_TYPE_10G_FIBRE_B:
link_info->speed = SPEED_10000;
link_info->port = PORT_FIBRE;
break;
default:
switch (card_info->port_speed) {
case CARD_INFO_PORTS_10M:
link_info->speed = SPEED_10;
break;
case CARD_INFO_PORTS_100M:
link_info->speed = SPEED_100;
break;
case CARD_INFO_PORTS_1G:
link_info->speed = SPEED_1000;
break;
case CARD_INFO_PORTS_10G:
link_info->speed = SPEED_10000;
break;
case CARD_INFO_PORTS_25G:
link_info->speed = SPEED_25000;
break;
default:
link_info->speed = SPEED_UNKNOWN;
}

link_info->port = PORT_OTHER;
}

return 0;
}

int qeth_query_card_info(struct qeth_card *card,
struct carrier_info *carrier_info)
struct qeth_link_info *link_info)
{
struct qeth_cmd_buffer *iob;

Expand All @@ -4894,8 +4947,8 @@ int qeth_query_card_info(struct qeth_card *card,
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
if (!iob)
return -ENOMEM;
return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
(void *)carrier_info);

return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, link_info);
}

/**
Expand Down
74 changes: 12 additions & 62 deletions drivers/s390/net/qeth_ethtool.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -324,8 +324,7 @@ static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,
/* Autoneg and full-duplex are supported and advertised unconditionally. */
/* Always advertise and support all speeds up to specified, and only one */
/* specified port type. */
static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
int maxspeed, int porttype)
static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd)
{
ethtool_link_ksettings_zero_link_mode(cmd, supported);
ethtool_link_ksettings_zero_link_mode(cmd, advertising);
Expand All @@ -334,7 +333,7 @@ static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);

switch (porttype) {
switch (cmd->base.port) {
case PORT_TP:
ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
Expand All @@ -350,7 +349,7 @@ static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
}

/* partially does fall through, to also select lower speeds */
switch (maxspeed) {
switch (cmd->base.speed) {
case SPEED_25000:
ethtool_link_ksettings_add_link_mode(cmd, supported,
25000baseSR_Full);
Expand Down Expand Up @@ -406,13 +405,12 @@ static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
}
}


static int qeth_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct qeth_card *card = netdev->ml_priv;
struct qeth_link_info link_info;
enum qeth_link_types link_type;
struct carrier_info carrier_info;

if (IS_IQD(card) || IS_VM_NIC(card))
link_type = QETH_LINK_TYPE_10GBIT_ETH;
Expand Down Expand Up @@ -449,66 +447,18 @@ static int qeth_get_link_ksettings(struct net_device *netdev,
cmd->base.speed = SPEED_10;
cmd->base.port = PORT_TP;
}
qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);

/* Check if we can obtain more accurate information. */
/* If QUERY_CARD_INFO command is not supported or fails, */
/* just return the heuristics that was filled above. */
if (qeth_query_card_info(card, &carrier_info))
return 0;

netdev_dbg(netdev,
"card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
carrier_info.card_type,
carrier_info.port_mode,
carrier_info.port_speed);

/* Update attributes for which we've obtained more authoritative */
/* information, leave the rest the way they where filled above. */
switch (carrier_info.card_type) {
case CARD_INFO_TYPE_1G_COPPER_A:
case CARD_INFO_TYPE_1G_COPPER_B:
cmd->base.port = PORT_TP;
qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
break;
case CARD_INFO_TYPE_1G_FIBRE_A:
case CARD_INFO_TYPE_1G_FIBRE_B:
cmd->base.port = PORT_FIBRE;
qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
break;
case CARD_INFO_TYPE_10G_FIBRE_A:
case CARD_INFO_TYPE_10G_FIBRE_B:
cmd->base.port = PORT_FIBRE;
qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
break;
}

switch (carrier_info.port_mode) {
case CARD_INFO_PORTM_FULLDUPLEX:
cmd->base.duplex = DUPLEX_FULL;
break;
case CARD_INFO_PORTM_HALFDUPLEX:
cmd->base.duplex = DUPLEX_HALF;
break;
if (!qeth_query_card_info(card, &link_info)) {
if (link_info.speed != SPEED_UNKNOWN)
cmd->base.speed = link_info.speed;
if (link_info.duplex != DUPLEX_UNKNOWN)
cmd->base.duplex = link_info.duplex;
if (link_info.port != PORT_OTHER)
cmd->base.port = link_info.port;
}

switch (carrier_info.port_speed) {
case CARD_INFO_PORTS_10M:
cmd->base.speed = SPEED_10;
break;
case CARD_INFO_PORTS_100M:
cmd->base.speed = SPEED_100;
break;
case CARD_INFO_PORTS_1G:
cmd->base.speed = SPEED_1000;
break;
case CARD_INFO_PORTS_10G:
cmd->base.speed = SPEED_10000;
break;
case CARD_INFO_PORTS_25G:
cmd->base.speed = SPEED_25000;
break;
}
qeth_set_ethtool_link_modes(cmd);

return 0;
}
Expand Down

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