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net: rocker: Add support for retrieving port level statistics

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Add support for retrieving port level statistics from device.
Hook is added for ethtool's stats functionality. For example,

$ ethtool -S eth3
NIC statistics:
     rx_packets: 12
     rx_bytes: 2790
     rx_dropped: 0
     rx_errors: 0
     tx_packets: 8
     tx_bytes: 728
     tx_dropped: 0
     tx_errors: 0

Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2015-01-29 20:59:33 -07:00 committed by David S. Miller
parent fe3ef61653
commit 9766e97af1
2 changed files with 155 additions and 0 deletions
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134
drivers/net/ethernet/rocker/rocker.c
View File

@ -3833,11 +3833,145 @@ static void rocker_port_get_drvinfo(struct net_device *dev,
strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
}
static struct rocker_port_stats {
char str[ETH_GSTRING_LEN];
int type;
} rocker_port_stats[] = {
{ "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, },
{ "rx_bytes", ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, },
{ "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
{ "rx_errors", ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, },
{ "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, },
{ "tx_bytes", ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, },
{ "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
{ "tx_errors", ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, },
};
#define ROCKER_PORT_STATS_LEN ARRAY_SIZE(rocker_port_stats)
static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
u8 *p = data;
int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
break;
}
}
static int
rocker_cmd_get_port_stats_prep(struct rocker *rocker,
struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
struct rocker_tlv *cmd_stats;
if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
return -EMSGSIZE;
cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
if (!cmd_stats)
return -EMSGSIZE;
if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_LPORT,
rocker_port->lport))
return -EMSGSIZE;
rocker_tlv_nest_end(desc_info, cmd_stats);
return 0;
}
static int
rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
struct rocker_port *rocker_port,
struct rocker_desc_info *desc_info,
void *priv)
{
struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
struct rocker_tlv *pattr;
u32 lport;
u64 *data = priv;
int i;
rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
if (!attrs[ROCKER_TLV_CMD_INFO])
return -EIO;
rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
attrs[ROCKER_TLV_CMD_INFO]);
if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_LPORT])
return -EIO;
lport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_LPORT]);
if (lport != rocker_port->lport)
return -EIO;
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
pattr = stats_attrs[rocker_port_stats[i].type];
if (!pattr)
continue;
data[i] = rocker_tlv_get_u64(pattr);
}
return 0;
}
static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
void *priv)
{
return rocker_cmd_exec(rocker_port->rocker, rocker_port,
rocker_cmd_get_port_stats_prep, NULL,
rocker_cmd_get_port_stats_ethtool_proc,
priv, false);
}
static void rocker_port_get_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct rocker_port *rocker_port = netdev_priv(dev);
if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
int i;
for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
data[i] = 0;
}
return;
}
static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return ROCKER_PORT_STATS_LEN;
default:
return -EOPNOTSUPP;
}
}
static const struct ethtool_ops rocker_port_ethtool_ops = {
.get_settings = rocker_port_get_settings,
.set_settings = rocker_port_set_settings,
.get_drvinfo = rocker_port_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_strings = rocker_port_get_strings,
.get_ethtool_stats = rocker_port_get_stats,
.get_sset_count = rocker_port_get_sset_count,
};
/*****************

21
drivers/net/ethernet/rocker/rocker.h
View File

@ -127,6 +127,9 @@ enum {
ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL,
ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_GET_STATS,
ROCKER_TLV_CMD_TYPE_CLEAR_PORT_STATS,
ROCKER_TLV_CMD_TYPE_GET_PORT_STATS,
__ROCKER_TLV_CMD_TYPE_MAX,
ROCKER_TLV_CMD_TYPE_MAX = __ROCKER_TLV_CMD_TYPE_MAX - 1,
};
@ -146,6 +149,24 @@ enum {
__ROCKER_TLV_CMD_PORT_SETTINGS_MAX - 1,
};
enum {
ROCKER_TLV_CMD_PORT_STATS_UNSPEC,
ROCKER_TLV_CMD_PORT_STATS_LPORT, /* u32 */
ROCKER_TLV_CMD_PORT_STATS_RX_PKTS, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_RX_BYTES, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_TX_PKTS, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_TX_BYTES, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, /* u64 */
ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS, /* u64 */
__ROCKER_TLV_CMD_PORT_STATS_MAX,
ROCKER_TLV_CMD_PORT_STATS_MAX = __ROCKER_TLV_CMD_PORT_STATS_MAX - 1,
};
enum rocker_port_mode {
ROCKER_PORT_MODE_OF_DPA,
};