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Message-Id: <8ceab59934125ad4eb56aa304a14b5f90378e115.1512548097.git.igor.russkikh@aquantia.com>
Date: Thu, 7 Dec 2017 11:39:44 +0300
From: Igor Russkikh <igor.russkikh@...antia.com>
To: "David S . Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, David Arcari <darcari@...hat.com>,
Pavel Belous <pavel.belous@...antia.com>,
Nadezhda Krupnina <Nadezhda.Krupnina@...antia.com>,
Simon Edelhaus <simon.edelhaus@...antia.com>,
Igor Russkikh <igor.russkikh@...antia.com>
Subject: [PATCH net 3/4] net: aquantia: Improve and fix statistics on device
1) Device hardware provides only 32bit counters. Using these directly
causes byte counters to overflow soon. A separate nic level structure
with 64 bit counters is now used to collect incrementally all the stats
and report these counters to ethtool stats and ndev stats.
2) ndev stats were filled from ring counters. These sometimes incorrectly
calculate byte and packet amounts when using LRO/LSO and jumboframes.
Fill ndev counters from hardware makes them precise.
3) Fill in multicast counter in ndev stats from hardware counter
4) Improve link state and statistics check interval callback: reduce normal
timeout from 2 secs to 1 sec. If link is down, reduce it to 500msec. This
speeds up link detection.
5) Reset driver level statistics to zero on initialization
6) Fix typo in ethtool statistics names
Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>
---
drivers/net/ethernet/aquantia/atlantic/aq_cfg.h | 2 +-
.../net/ethernet/aquantia/atlantic/aq_ethtool.c | 16 ++---
drivers/net/ethernet/aquantia/atlantic/aq_hw.h | 25 ++++++-
drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 75 +++++++++++++-------
.../ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c | 7 ++
.../ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 7 ++
.../aquantia/atlantic/hw_atl/hw_atl_utils.c | 80 +++++++---------------
.../aquantia/atlantic/hw_atl/hw_atl_utils.h | 6 +-
8 files changed, 124 insertions(+), 94 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_cfg.h b/drivers/net/ethernet/aquantia/atlantic/aq_cfg.h
index 57e7968..73b93a7 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_cfg.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_cfg.h
@@ -50,7 +50,7 @@
#define AQ_CFG_PCI_FUNC_MSIX_IRQS 9U
#define AQ_CFG_PCI_FUNC_PORTS 2U
-#define AQ_CFG_SERVICE_TIMER_INTERVAL (2 * HZ)
+#define AQ_CFG_SERVICE_TIMER_INTERVAL (1 * HZ)
#define AQ_CFG_POLLING_TIMER_INTERVAL ((unsigned int)(2 * HZ))
#define AQ_CFG_SKB_FRAGS_MAX 32U
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c b/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
index 70efb74..f2d8063 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
@@ -66,14 +66,14 @@ static const char aq_ethtool_stat_names[][ETH_GSTRING_LEN] = {
"OutUCast",
"OutMCast",
"OutBCast",
- "InUCastOctects",
- "OutUCastOctects",
- "InMCastOctects",
- "OutMCastOctects",
- "InBCastOctects",
- "OutBCastOctects",
- "InOctects",
- "OutOctects",
+ "InUCastOctets",
+ "OutUCastOctets",
+ "InMCastOctets",
+ "OutMCastOctets",
+ "InBCastOctets",
+ "OutBCastOctets",
+ "InOctets",
+ "OutOctets",
"InPacketsDma",
"OutPacketsDma",
"InOctetsDma",
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
index 4ebd53b..b3825de 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_hw.h
@@ -46,6 +46,28 @@ struct aq_hw_link_status_s {
unsigned int mbps;
};
+struct aq_stats_s {
+ u64 uprc;
+ u64 mprc;
+ u64 bprc;
+ u64 erpt;
+ u64 uptc;
+ u64 mptc;
+ u64 bptc;
+ u64 erpr;
+ u64 mbtc;
+ u64 bbtc;
+ u64 mbrc;
+ u64 bbrc;
+ u64 ubrc;
+ u64 ubtc;
+ u64 dpc;
+ u64 dma_pkt_rc;
+ u64 dma_pkt_tc;
+ u64 dma_oct_rc;
+ u64 dma_oct_tc;
+};
+
#define AQ_HW_IRQ_INVALID 0U
#define AQ_HW_IRQ_LEGACY 1U
#define AQ_HW_IRQ_MSI 2U
@@ -166,8 +188,7 @@ struct aq_hw_ops {
int (*hw_update_stats)(struct aq_hw_s *self);
- int (*hw_get_hw_stats)(struct aq_hw_s *self, u64 *data,
- unsigned int *p_count);
+ struct aq_stats_s *(*hw_get_hw_stats)(struct aq_hw_s *self);
int (*hw_get_fw_version)(struct aq_hw_s *self, u32 *fw_version);
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index a360ccc..75a894a 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -37,6 +37,8 @@ static unsigned int aq_itr_rx;
module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
+static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
+
static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
{
struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
@@ -166,11 +168,8 @@ static int aq_nic_update_link_status(struct aq_nic_s *self)
static void aq_nic_service_timer_cb(struct timer_list *t)
{
struct aq_nic_s *self = from_timer(self, t, service_timer);
- struct net_device *ndev = aq_nic_get_ndev(self);
+ int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL;
int err = 0;
- unsigned int i = 0U;
- struct aq_ring_stats_rx_s stats_rx;
- struct aq_ring_stats_tx_s stats_tx;
if (aq_utils_obj_test(&self->header.flags, AQ_NIC_FLAGS_IS_NOT_READY))
goto err_exit;
@@ -182,23 +181,14 @@ static void aq_nic_service_timer_cb(struct timer_list *t)
if (self->aq_hw_ops.hw_update_stats)
self->aq_hw_ops.hw_update_stats(self->aq_hw);
- memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s));
- memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s));
- for (i = AQ_DIMOF(self->aq_vec); i--;) {
- if (self->aq_vec[i])
- aq_vec_add_stats(self->aq_vec[i], &stats_rx, &stats_tx);
- }
+ aq_nic_update_ndev_stats(self);
- ndev->stats.rx_packets = stats_rx.packets;
- ndev->stats.rx_bytes = stats_rx.bytes;
- ndev->stats.rx_errors = stats_rx.errors;
- ndev->stats.tx_packets = stats_tx.packets;
- ndev->stats.tx_bytes = stats_tx.bytes;
- ndev->stats.tx_errors = stats_tx.errors;
+ /* If no link - use faster timer rate to detect link up asap */
+ if (!netif_carrier_ok(self->ndev))
+ ctimer = max(ctimer / 2, 1);
err_exit:
- mod_timer(&self->service_timer,
- jiffies + AQ_CFG_SERVICE_TIMER_INTERVAL);
+ mod_timer(&self->service_timer, jiffies + ctimer);
}
static void aq_nic_polling_timer_cb(struct timer_list *t)
@@ -750,16 +740,40 @@ int aq_nic_get_regs_count(struct aq_nic_s *self)
void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
{
- struct aq_vec_s *aq_vec = NULL;
unsigned int i = 0U;
unsigned int count = 0U;
- int err = 0;
+ struct aq_vec_s *aq_vec = NULL;
+ struct aq_stats_s *stats = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw);
- err = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw, data, &count);
- if (err < 0)
+ if (!stats)
goto err_exit;
- data += count;
+ data[i] = stats->uprc + stats->mprc + stats->bprc;
+ data[++i] = stats->uprc;
+ data[++i] = stats->mprc;
+ data[++i] = stats->bprc;
+ data[++i] = stats->erpt;
+ data[++i] = stats->uptc + stats->mptc + stats->bptc;
+ data[++i] = stats->uptc;
+ data[++i] = stats->mptc;
+ data[++i] = stats->bptc;
+ data[++i] = stats->ubrc;
+ data[++i] = stats->ubtc;
+ data[++i] = stats->mbrc;
+ data[++i] = stats->mbtc;
+ data[++i] = stats->bbrc;
+ data[++i] = stats->bbtc;
+ data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
+ data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
+ data[++i] = stats->dma_pkt_rc;
+ data[++i] = stats->dma_pkt_tc;
+ data[++i] = stats->dma_oct_rc;
+ data[++i] = stats->dma_oct_tc;
+ data[++i] = stats->dpc;
+
+ i++;
+
+ data += i;
count = 0U;
for (i = 0U, aq_vec = self->aq_vec[0];
@@ -769,7 +783,20 @@ void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
}
err_exit:;
- (void)err;
+}
+
+static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
+{
+ struct net_device *ndev = self->ndev;
+ struct aq_stats_s *stats = self->aq_hw_ops.hw_get_hw_stats(self->aq_hw);
+
+ ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc;
+ ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc;
+ ndev->stats.rx_errors = stats->erpr;
+ ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc;
+ ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc;
+ ndev->stats.tx_errors = stats->erpt;
+ ndev->stats.multicast = stats->mprc;
}
void aq_nic_get_link_ksettings(struct aq_nic_s *self,
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
index b0abd18..331e7b8 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
@@ -344,6 +344,13 @@ static int hw_atl_a0_hw_init(struct aq_hw_s *self,
hw_atl_a0_hw_rss_set(self, &aq_nic_cfg->aq_rss);
hw_atl_a0_hw_rss_hash_set(self, &aq_nic_cfg->aq_rss);
+ /* Read initial hardware counters
+ * and reset current in-driver statistics
+ */
+ hw_atl_utils_update_stats(self);
+ memset(&PHAL_ATLANTIC_A0->curr_stats, 0,
+ sizeof(PHAL_ATLANTIC_A0->curr_stats));
+
err = aq_hw_err_from_flags(self);
if (err < 0)
goto err_exit;
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index 36fddb1..1137034 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -397,6 +397,13 @@ static int hw_atl_b0_hw_init(struct aq_hw_s *self,
*/
aq_hw_write_reg(self, tx_dma_total_req_limit_adr, 24);
+ /* Read initial hardware counters
+ * and reset current in-driver statistics
+ */
+ hw_atl_utils_update_stats(self);
+ memset(&PHAL_ATLANTIC_B0->curr_stats, 0,
+ sizeof(PHAL_ATLANTIC_B0->curr_stats));
+
err = aq_hw_err_from_flags(self);
if (err < 0)
goto err_exit;
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c
index 1fe016f..f2ce12e 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c
@@ -503,73 +503,43 @@ int hw_atl_utils_update_stats(struct aq_hw_s *self)
struct hw_atl_s *hw_self = PHAL_ATLANTIC;
struct hw_aq_atl_utils_mbox mbox;
- if (!self->aq_link_status.mbps)
- return 0;
-
hw_atl_utils_mpi_read_stats(self, &mbox);
#define AQ_SDELTA(_N_) (hw_self->curr_stats._N_ += \
mbox.stats._N_ - hw_self->last_stats._N_)
-
- AQ_SDELTA(uprc);
- AQ_SDELTA(mprc);
- AQ_SDELTA(bprc);
- AQ_SDELTA(erpt);
-
- AQ_SDELTA(uptc);
- AQ_SDELTA(mptc);
- AQ_SDELTA(bptc);
- AQ_SDELTA(erpr);
-
- AQ_SDELTA(ubrc);
- AQ_SDELTA(ubtc);
- AQ_SDELTA(mbrc);
- AQ_SDELTA(mbtc);
- AQ_SDELTA(bbrc);
- AQ_SDELTA(bbtc);
- AQ_SDELTA(dpc);
-
+ if (self->aq_link_status.mbps) {
+ AQ_SDELTA(uprc);
+ AQ_SDELTA(mprc);
+ AQ_SDELTA(bprc);
+ AQ_SDELTA(erpt);
+
+ AQ_SDELTA(uptc);
+ AQ_SDELTA(mptc);
+ AQ_SDELTA(bptc);
+ AQ_SDELTA(erpr);
+
+ AQ_SDELTA(ubrc);
+ AQ_SDELTA(ubtc);
+ AQ_SDELTA(mbrc);
+ AQ_SDELTA(mbtc);
+ AQ_SDELTA(bbrc);
+ AQ_SDELTA(bbtc);
+ AQ_SDELTA(dpc);
+ }
#undef AQ_SDELTA
+ hw_self->curr_stats.dma_pkt_rc = stats_rx_dma_good_pkt_counterlsw_get(self);
+ hw_self->curr_stats.dma_pkt_tc = stats_tx_dma_good_pkt_counterlsw_get(self);
+ hw_self->curr_stats.dma_oct_rc = stats_rx_dma_good_octet_counterlsw_get(self);
+ hw_self->curr_stats.dma_oct_tc = stats_tx_dma_good_octet_counterlsw_get(self);
memcpy(&hw_self->last_stats, &mbox.stats, sizeof(mbox.stats));
return 0;
}
-int hw_atl_utils_get_hw_stats(struct aq_hw_s *self,
- u64 *data, unsigned int *p_count)
+struct aq_stats_s *hw_atl_utils_get_hw_stats(struct aq_hw_s *self)
{
- struct hw_atl_s *hw_self = PHAL_ATLANTIC;
- struct hw_atl_stats_s *stats = &hw_self->curr_stats;
- int i = 0;
-
- data[i] = stats->uprc + stats->mprc + stats->bprc;
- data[++i] = stats->uprc;
- data[++i] = stats->mprc;
- data[++i] = stats->bprc;
- data[++i] = stats->erpt;
- data[++i] = stats->uptc + stats->mptc + stats->bptc;
- data[++i] = stats->uptc;
- data[++i] = stats->mptc;
- data[++i] = stats->bptc;
- data[++i] = stats->ubrc;
- data[++i] = stats->ubtc;
- data[++i] = stats->mbrc;
- data[++i] = stats->mbtc;
- data[++i] = stats->bbrc;
- data[++i] = stats->bbtc;
- data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
- data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
- data[++i] = stats_rx_dma_good_pkt_counterlsw_get(self);
- data[++i] = stats_tx_dma_good_pkt_counterlsw_get(self);
- data[++i] = stats_rx_dma_good_octet_counterlsw_get(self);
- data[++i] = stats_tx_dma_good_octet_counterlsw_get(self);
- data[++i] = stats->dpc;
-
- if (p_count)
- *p_count = ++i;
-
- return 0;
+ return &PHAL_ATLANTIC->curr_stats;
}
static const u32 hw_atl_utils_hw_mac_regs[] = {
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h
index c99cc69..21aeca6 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h
@@ -129,7 +129,7 @@ struct __packed hw_aq_atl_utils_mbox {
struct __packed hw_atl_s {
struct aq_hw_s base;
struct hw_atl_stats_s last_stats;
- struct hw_atl_stats_s curr_stats;
+ struct aq_stats_s curr_stats;
u64 speed;
unsigned int chip_features;
u32 fw_ver_actual;
@@ -207,8 +207,6 @@ int hw_atl_utils_get_fw_version(struct aq_hw_s *self, u32 *fw_version);
int hw_atl_utils_update_stats(struct aq_hw_s *self);
-int hw_atl_utils_get_hw_stats(struct aq_hw_s *self,
- u64 *data,
- unsigned int *p_count);
+struct aq_stats_s *hw_atl_utils_get_hw_stats(struct aq_hw_s *self);
#endif /* HW_ATL_UTILS_H */
--
2.7.4
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