leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'bgmac-stats'

Browse Source 
Florian Fainelli says:

====================
net: bgmac: Misc improvements

This patch series add minor changes to the bgmac driver:

- properly bind net_device with its backing device structure such that
  we can locate the device using common helper functions

- add support for ethtool statistics reading the HW MIB counters which
  is useful for debugging

- add netdev statistics throughout the TX/RX path to know what is going on
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-06-09 23:37:24 -07:00
commit cef8a464c6
2 changed files with 137 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

135
drivers/net/ethernet/broadcom/bgmac.c
View File

@ -246,6 +246,8 @@ err_dma_head:
err_drop:
dev_kfree_skb(skb);
net_dev->stats.tx_dropped++;
net_dev->stats.tx_errors++;
return NETDEV_TX_OK;
}
@ -284,6 +286,8 @@ static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring)
DMA_TO_DEVICE);
if (slot->skb) {
bgmac->net_dev->stats.tx_bytes += slot->skb->len;
bgmac->net_dev->stats.tx_packets++;
bytes_compl += slot->skb->len;
pkts_compl++;
@ -464,6 +468,7 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n",
ring->start);
put_page(virt_to_head_page(buf));
bgmac->net_dev->stats.rx_errors++;
break;
}
@ -471,6 +476,8 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
bgmac_err(bgmac, "Found oversized packet at slot %d, DMA issue!\n",
ring->start);
put_page(virt_to_head_page(buf));
bgmac->net_dev->stats.rx_length_errors++;
bgmac->net_dev->stats.rx_errors++;
break;
}
@ -481,6 +488,7 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
if (unlikely(!skb)) {
bgmac_err(bgmac, "build_skb failed\n");
put_page(virt_to_head_page(buf));
bgmac->net_dev->stats.rx_errors++;
break;
}
skb_put(skb, BGMAC_RX_FRAME_OFFSET +
@ -490,6 +498,8 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,
skb_checksum_none_assert(skb);
skb->protocol = eth_type_trans(skb, bgmac->net_dev);
bgmac->net_dev->stats.rx_bytes += len;
bgmac->net_dev->stats.rx_packets++;
napi_gro_receive(&bgmac->napi, skb);
handled++;
} while (0);
@ -1382,6 +1392,127 @@ static const struct net_device_ops bgmac_netdev_ops = {
* ethtool_ops
**************************************************/
struct bgmac_stat {
u8 size;
u32 offset;
const char *name;
};
static struct bgmac_stat bgmac_get_strings_stats[] = {
{ 8, BGMAC_TX_GOOD_OCTETS, "tx_good_octets" },
{ 4, BGMAC_TX_GOOD_PKTS, "tx_good" },
{ 8, BGMAC_TX_OCTETS, "tx_octets" },
{ 4, BGMAC_TX_PKTS, "tx_pkts" },
{ 4, BGMAC_TX_BROADCAST_PKTS, "tx_broadcast" },
{ 4, BGMAC_TX_MULTICAST_PKTS, "tx_multicast" },
{ 4, BGMAC_TX_LEN_64, "tx_64" },
{ 4, BGMAC_TX_LEN_65_TO_127, "tx_65_127" },
{ 4, BGMAC_TX_LEN_128_TO_255, "tx_128_255" },
{ 4, BGMAC_TX_LEN_256_TO_511, "tx_256_511" },
{ 4, BGMAC_TX_LEN_512_TO_1023, "tx_512_1023" },
{ 4, BGMAC_TX_LEN_1024_TO_1522, "tx_1024_1522" },
{ 4, BGMAC_TX_LEN_1523_TO_2047, "tx_1523_2047" },
{ 4, BGMAC_TX_LEN_2048_TO_4095, "tx_2048_4095" },
{ 4, BGMAC_TX_LEN_4096_TO_8191, "tx_4096_8191" },
{ 4, BGMAC_TX_LEN_8192_TO_MAX, "tx_8192_max" },
{ 4, BGMAC_TX_JABBER_PKTS, "tx_jabber" },
{ 4, BGMAC_TX_OVERSIZE_PKTS, "tx_oversize" },
{ 4, BGMAC_TX_FRAGMENT_PKTS, "tx_fragment" },
{ 4, BGMAC_TX_UNDERRUNS, "tx_underruns" },
{ 4, BGMAC_TX_TOTAL_COLS, "tx_total_cols" },
{ 4, BGMAC_TX_SINGLE_COLS, "tx_single_cols" },
{ 4, BGMAC_TX_MULTIPLE_COLS, "tx_multiple_cols" },
{ 4, BGMAC_TX_EXCESSIVE_COLS, "tx_excessive_cols" },
{ 4, BGMAC_TX_LATE_COLS, "tx_late_cols" },
{ 4, BGMAC_TX_DEFERED, "tx_defered" },
{ 4, BGMAC_TX_CARRIER_LOST, "tx_carrier_lost" },
{ 4, BGMAC_TX_PAUSE_PKTS, "tx_pause" },
{ 4, BGMAC_TX_UNI_PKTS, "tx_unicast" },
{ 4, BGMAC_TX_Q0_PKTS, "tx_q0" },
{ 8, BGMAC_TX_Q0_OCTETS, "tx_q0_octets" },
{ 4, BGMAC_TX_Q1_PKTS, "tx_q1" },
{ 8, BGMAC_TX_Q1_OCTETS, "tx_q1_octets" },
{ 4, BGMAC_TX_Q2_PKTS, "tx_q2" },
{ 8, BGMAC_TX_Q2_OCTETS, "tx_q2_octets" },
{ 4, BGMAC_TX_Q3_PKTS, "tx_q3" },
{ 8, BGMAC_TX_Q3_OCTETS, "tx_q3_octets" },
{ 8, BGMAC_RX_GOOD_OCTETS, "rx_good_octets" },
{ 4, BGMAC_RX_GOOD_PKTS, "rx_good" },
{ 8, BGMAC_RX_OCTETS, "rx_octets" },
{ 4, BGMAC_RX_PKTS, "rx_pkts" },
{ 4, BGMAC_RX_BROADCAST_PKTS, "rx_broadcast" },
{ 4, BGMAC_RX_MULTICAST_PKTS, "rx_multicast" },
{ 4, BGMAC_RX_LEN_64, "rx_64" },
{ 4, BGMAC_RX_LEN_65_TO_127, "rx_65_127" },
{ 4, BGMAC_RX_LEN_128_TO_255, "rx_128_255" },
{ 4, BGMAC_RX_LEN_256_TO_511, "rx_256_511" },
{ 4, BGMAC_RX_LEN_512_TO_1023, "rx_512_1023" },
{ 4, BGMAC_RX_LEN_1024_TO_1522, "rx_1024_1522" },
{ 4, BGMAC_RX_LEN_1523_TO_2047, "rx_1523_2047" },
{ 4, BGMAC_RX_LEN_2048_TO_4095, "rx_2048_4095" },
{ 4, BGMAC_RX_LEN_4096_TO_8191, "rx_4096_8191" },
{ 4, BGMAC_RX_LEN_8192_TO_MAX, "rx_8192_max" },
{ 4, BGMAC_RX_JABBER_PKTS, "rx_jabber" },
{ 4, BGMAC_RX_OVERSIZE_PKTS, "rx_oversize" },
{ 4, BGMAC_RX_FRAGMENT_PKTS, "rx_fragment" },
{ 4, BGMAC_RX_MISSED_PKTS, "rx_missed" },
{ 4, BGMAC_RX_CRC_ALIGN_ERRS, "rx_crc_align" },
{ 4, BGMAC_RX_UNDERSIZE, "rx_undersize" },
{ 4, BGMAC_RX_CRC_ERRS, "rx_crc" },
{ 4, BGMAC_RX_ALIGN_ERRS, "rx_align" },
{ 4, BGMAC_RX_SYMBOL_ERRS, "rx_symbol" },
{ 4, BGMAC_RX_PAUSE_PKTS, "rx_pause" },
{ 4, BGMAC_RX_NONPAUSE_PKTS, "rx_nonpause" },
{ 4, BGMAC_RX_SACHANGES, "rx_sa_changes" },
{ 4, BGMAC_RX_UNI_PKTS, "rx_unicast" },
};
#define BGMAC_STATS_LEN ARRAY_SIZE(bgmac_get_strings_stats)
static int bgmac_get_sset_count(struct net_device *dev, int string_set)
{
switch (string_set) {
case ETH_SS_STATS:
return BGMAC_STATS_LEN;
}
return -EOPNOTSUPP;
}
static void bgmac_get_strings(struct net_device *dev, u32 stringset,
u8 *data)
{
int i;
if (stringset != ETH_SS_STATS)
return;
for (i = 0; i < BGMAC_STATS_LEN; i++)
strlcpy(data + i * ETH_GSTRING_LEN,
bgmac_get_strings_stats[i].name, ETH_GSTRING_LEN);
}
static void bgmac_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *ss, uint64_t *data)
{
struct bgmac *bgmac = netdev_priv(dev);
const struct bgmac_stat *s;
unsigned int i;
u64 val;
if (!netif_running(dev))
return;
for (i = 0; i < BGMAC_STATS_LEN; i++) {
s = &bgmac_get_strings_stats[i];
val = 0;
if (s->size == 8)
val = (u64)bgmac_read(bgmac, s->offset + 4) << 32;
val |= bgmac_read(bgmac, s->offset);
data[i] = val;
}
}
static int bgmac_get_settings(struct net_device *net_dev,
struct ethtool_cmd *cmd)
{
@ -1406,6 +1537,9 @@ static void bgmac_get_drvinfo(struct net_device *net_dev,
}
static const struct ethtool_ops bgmac_ethtool_ops = {
.get_strings = bgmac_get_strings,
.get_sset_count = bgmac_get_sset_count,
.get_ethtool_stats = bgmac_get_ethtool_stats,
.get_settings = bgmac_get_settings,
.set_settings = bgmac_set_settings,
.get_drvinfo = bgmac_get_drvinfo,
@ -1588,6 +1722,7 @@ static int bgmac_probe(struct bcma_device *core)
bgmac->net_dev = net_dev;
bgmac->core = core;
bcma_set_drvdata(core, bgmac);
SET_NETDEV_DEV(net_dev, &core->dev);
/* Defaults */
memcpy(bgmac->net_dev->dev_addr, mac, ETH_ALEN);

4
drivers/net/ethernet/broadcom/bgmac.h
View File

@ -123,7 +123,7 @@
#define BGMAC_TX_LEN_1024_TO_1522 0x334
#define BGMAC_TX_LEN_1523_TO_2047 0x338
#define BGMAC_TX_LEN_2048_TO_4095 0x33c
#define BGMAC_TX_LEN_4095_TO_8191 0x340
#define BGMAC_TX_LEN_4096_TO_8191 0x340
#define BGMAC_TX_LEN_8192_TO_MAX 0x344
#define BGMAC_TX_JABBER_PKTS 0x348 /* Error */
#define BGMAC_TX_OVERSIZE_PKTS 0x34c /* Error */
@ -166,7 +166,7 @@
#define BGMAC_RX_LEN_1024_TO_1522 0x3e4
#define BGMAC_RX_LEN_1523_TO_2047 0x3e8
#define BGMAC_RX_LEN_2048_TO_4095 0x3ec
#define BGMAC_RX_LEN_4095_TO_8191 0x3f0
#define BGMAC_RX_LEN_4096_TO_8191 0x3f0
#define BGMAC_RX_LEN_8192_TO_MAX 0x3f4
#define BGMAC_RX_JABBER_PKTS 0x3f8 /* Error */
#define BGMAC_RX_OVERSIZE_PKTS 0x3fc /* Error */