* [PATCH AUTOSEL 6.0 23/77] net: axienet: Switch to 64-bit RX/TX statistics
[not found] <20221009220754.1214186-1-sashal@kernel.org>
@ 2022-10-09 22:07 ` Sasha Levin
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 36/77] net: sparx5: fix function return type to match actual type Sasha Levin
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2022-10-09 22:07 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Robert Hancock, Jakub Kicinski, Sasha Levin, radhey.shyam.pandey,
davem, edumazet, pabeni, michal.simek, linux, netdev,
linux-arm-kernel
From: Robert Hancock <robert.hancock@calian.com>
[ Upstream commit cb45a8bf4693965e89d115cd2c510f12bc127c37 ]
The RX and TX byte/packet statistics in this driver could be overflowed
relatively quickly on a 32-bit platform. Switch these stats to use the
u64_stats infrastructure to avoid this.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20220829233901.3429419-1-robert.hancock@calian.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/xilinx/xilinx_axienet.h | 12 ++++++
.../net/ethernet/xilinx/xilinx_axienet_main.c | 37 +++++++++++++++++--
2 files changed, 45 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h
index f2e2261b4b7d..8ff4333de2ad 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet.h
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h
@@ -402,6 +402,9 @@ struct axidma_bd {
* @rx_bd_num: Size of RX buffer descriptor ring
* @rx_bd_ci: Stores the index of the Rx buffer descriptor in the ring being
* accessed currently.
+ * @rx_packets: RX packet count for statistics
+ * @rx_bytes: RX byte count for statistics
+ * @rx_stat_sync: Synchronization object for RX stats
* @napi_tx: NAPI TX control structure
* @tx_dma_cr: Nominal content of TX DMA control register
* @tx_bd_v: Virtual address of the TX buffer descriptor ring
@@ -411,6 +414,9 @@ struct axidma_bd {
* complete. Only updated at runtime by TX NAPI poll.
* @tx_bd_tail: Stores the index of the next Tx buffer descriptor in the ring
* to be populated.
+ * @tx_packets: TX packet count for statistics
+ * @tx_bytes: TX byte count for statistics
+ * @tx_stat_sync: Synchronization object for TX stats
* @dma_err_task: Work structure to process Axi DMA errors
* @tx_irq: Axidma TX IRQ number
* @rx_irq: Axidma RX IRQ number
@@ -458,6 +464,9 @@ struct axienet_local {
dma_addr_t rx_bd_p;
u32 rx_bd_num;
u32 rx_bd_ci;
+ u64_stats_t rx_packets;
+ u64_stats_t rx_bytes;
+ struct u64_stats_sync rx_stat_sync;
struct napi_struct napi_tx;
u32 tx_dma_cr;
@@ -466,6 +475,9 @@ struct axienet_local {
u32 tx_bd_num;
u32 tx_bd_ci;
u32 tx_bd_tail;
+ u64_stats_t tx_packets;
+ u64_stats_t tx_bytes;
+ struct u64_stats_sync tx_stat_sync;
struct work_struct dma_err_task;
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 1760930ec0c4..9262988d26a3 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -752,8 +752,10 @@ static int axienet_tx_poll(struct napi_struct *napi, int budget)
if (lp->tx_bd_ci >= lp->tx_bd_num)
lp->tx_bd_ci %= lp->tx_bd_num;
- ndev->stats.tx_packets += packets;
- ndev->stats.tx_bytes += size;
+ u64_stats_update_begin(&lp->tx_stat_sync);
+ u64_stats_add(&lp->tx_packets, packets);
+ u64_stats_add(&lp->tx_bytes, size);
+ u64_stats_update_end(&lp->tx_stat_sync);
/* Matches barrier in axienet_start_xmit */
smp_mb();
@@ -984,8 +986,10 @@ static int axienet_rx_poll(struct napi_struct *napi, int budget)
cur_p = &lp->rx_bd_v[lp->rx_bd_ci];
}
- lp->ndev->stats.rx_packets += packets;
- lp->ndev->stats.rx_bytes += size;
+ u64_stats_update_begin(&lp->rx_stat_sync);
+ u64_stats_add(&lp->rx_packets, packets);
+ u64_stats_add(&lp->rx_bytes, size);
+ u64_stats_update_end(&lp->rx_stat_sync);
if (tail_p)
axienet_dma_out_addr(lp, XAXIDMA_RX_TDESC_OFFSET, tail_p);
@@ -1292,10 +1296,32 @@ static int axienet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
return phylink_mii_ioctl(lp->phylink, rq, cmd);
}
+static void
+axienet_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
+{
+ struct axienet_local *lp = netdev_priv(dev);
+ unsigned int start;
+
+ netdev_stats_to_stats64(stats, &dev->stats);
+
+ do {
+ start = u64_stats_fetch_begin_irq(&lp->rx_stat_sync);
+ stats->rx_packets = u64_stats_read(&lp->rx_packets);
+ stats->rx_bytes = u64_stats_read(&lp->rx_bytes);
+ } while (u64_stats_fetch_retry_irq(&lp->rx_stat_sync, start));
+
+ do {
+ start = u64_stats_fetch_begin_irq(&lp->tx_stat_sync);
+ stats->tx_packets = u64_stats_read(&lp->tx_packets);
+ stats->tx_bytes = u64_stats_read(&lp->tx_bytes);
+ } while (u64_stats_fetch_retry_irq(&lp->tx_stat_sync, start));
+}
+
static const struct net_device_ops axienet_netdev_ops = {
.ndo_open = axienet_open,
.ndo_stop = axienet_stop,
.ndo_start_xmit = axienet_start_xmit,
+ .ndo_get_stats64 = axienet_get_stats64,
.ndo_change_mtu = axienet_change_mtu,
.ndo_set_mac_address = netdev_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
@@ -1850,6 +1876,9 @@ static int axienet_probe(struct platform_device *pdev)
lp->rx_bd_num = RX_BD_NUM_DEFAULT;
lp->tx_bd_num = TX_BD_NUM_DEFAULT;
+ u64_stats_init(&lp->rx_stat_sync);
+ u64_stats_init(&lp->tx_stat_sync);
+
netif_napi_add(ndev, &lp->napi_rx, axienet_rx_poll, NAPI_POLL_WEIGHT);
netif_napi_add(ndev, &lp->napi_tx, axienet_tx_poll, NAPI_POLL_WEIGHT);
--
2.35.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 6.0 36/77] net: sparx5: fix function return type to match actual type
[not found] <20221009220754.1214186-1-sashal@kernel.org>
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 23/77] net: axienet: Switch to 64-bit RX/TX statistics Sasha Levin
@ 2022-10-09 22:07 ` Sasha Levin
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 41/77] wifi: mt76: mt7921: reset msta->airtime_ac while clearing up hw value Sasha Levin
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 75/77] net: sparx5: Fix return type of sparx5_port_xmit_impl Sasha Levin
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2022-10-09 22:07 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Casper Andersson, Dan Carpenter, Andrew Lunn, Paolo Abeni,
Sasha Levin, davem, edumazet, kuba, lars.povlsen, Steen.Hegelund,
daniel.machon, UNGLinuxDriver, horatiu.vultur, nhuck, netdev,
linux-arm-kernel
From: Casper Andersson <casper.casan@gmail.com>
[ Upstream commit 75554fe00f941c3c3d9344e88708093a14d2b4b8 ]
Function returns error integer, not bool.
Does not have any impact on functionality.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220906065815.3856323-1-casper.casan@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c | 4 ++--
drivers/net/ethernet/microchip/sparx5/sparx5_main.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
index a5837dbe0c7e..4af285918ea2 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_mactable.c
@@ -186,8 +186,8 @@ bool sparx5_mact_getnext(struct sparx5 *sparx5,
return ret == 0;
}
-bool sparx5_mact_find(struct sparx5 *sparx5,
- const unsigned char mac[ETH_ALEN], u16 vid, u32 *pcfg2)
+int sparx5_mact_find(struct sparx5 *sparx5,
+ const unsigned char mac[ETH_ALEN], u16 vid, u32 *pcfg2)
{
int ret;
u32 cfg2;
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
index b197129044b5..d071ac3b7106 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
@@ -307,8 +307,8 @@ int sparx5_mact_learn(struct sparx5 *sparx5, int port,
const unsigned char mac[ETH_ALEN], u16 vid);
bool sparx5_mact_getnext(struct sparx5 *sparx5,
unsigned char mac[ETH_ALEN], u16 *vid, u32 *pcfg2);
-bool sparx5_mact_find(struct sparx5 *sparx5,
- const unsigned char mac[ETH_ALEN], u16 vid, u32 *pcfg2);
+int sparx5_mact_find(struct sparx5 *sparx5,
+ const unsigned char mac[ETH_ALEN], u16 vid, u32 *pcfg2);
int sparx5_mact_forget(struct sparx5 *sparx5,
const unsigned char mac[ETH_ALEN], u16 vid);
int sparx5_add_mact_entry(struct sparx5 *sparx5,
--
2.35.1
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 6.0 41/77] wifi: mt76: mt7921: reset msta->airtime_ac while clearing up hw value
[not found] <20221009220754.1214186-1-sashal@kernel.org>
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 23/77] net: axienet: Switch to 64-bit RX/TX statistics Sasha Levin
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 36/77] net: sparx5: fix function return type to match actual type Sasha Levin
@ 2022-10-09 22:07 ` Sasha Levin
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 75/77] net: sparx5: Fix return type of sparx5_port_xmit_impl Sasha Levin
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2022-10-09 22:07 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sean Wang, YN Chen, Felix Fietkau, Sasha Levin, lorenzo,
ryder.lee, kvalo, davem, edumazet, kuba, pabeni, matthias.bgg,
deren.wu, johannes.berg, linux-wireless, netdev,
linux-arm-kernel, linux-mediatek
From: Sean Wang <sean.wang@mediatek.com>
[ Upstream commit 1bf66dc31032ff5292f4d5b76436653f269fcfbd ]
We should reset mstat->airtime_ac along with clear up the entries in the
hardware WLAN table for the Rx and Rx accumulative airtime. Otherwsie, the
value msta->airtime_ac - [tx, rx]_last may be a negative and that is not
the actual airtime the device took in the last run.
Reported-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7921/main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 1438a9f8d1fd..33bd64fe5c74 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -752,6 +752,7 @@ void mt7921_mac_sta_assoc(struct mt76_dev *mdev, struct ieee80211_vif *vif,
mt7921_mac_wtbl_update(dev, msta->wcid.idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
+ memset(msta->airtime_ac, 0, sizeof(msta->airtime_ac));
mt7921_mcu_sta_update(dev, sta, vif, true, MT76_STA_INFO_STATE_ASSOC);
--
2.35.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH AUTOSEL 6.0 75/77] net: sparx5: Fix return type of sparx5_port_xmit_impl
[not found] <20221009220754.1214186-1-sashal@kernel.org>
` (2 preceding siblings ...)
2022-10-09 22:07 ` [PATCH AUTOSEL 6.0 41/77] wifi: mt76: mt7921: reset msta->airtime_ac while clearing up hw value Sasha Levin
@ 2022-10-09 22:07 ` Sasha Levin
3 siblings, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2022-10-09 22:07 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Nathan Huckleberry, Dan Carpenter, llvm, David S . Miller,
Sasha Levin, edumazet, kuba, pabeni, lars.povlsen,
Steen.Hegelund, daniel.machon, UNGLinuxDriver, nathan,
ndesaulniers, casper.casan, horatiu.vultur, netdev,
linux-arm-kernel
From: Nathan Huckleberry <nhuck@google.com>
[ Upstream commit 73ea735073599430818e89b8901452287a15a718 ]
The ndo_start_xmit field in net_device_ops is expected to be of type
netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).
The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.
The return type of sparx5_port_xmit_impl should be changed from int to
netdev_tx_t.
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/microchip/sparx5/sparx5_main.h | 2 +-
drivers/net/ethernet/microchip/sparx5/sparx5_packet.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
index d071ac3b7106..705d8852078f 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
@@ -291,7 +291,7 @@ struct frame_info {
void sparx5_xtr_flush(struct sparx5 *sparx5, u8 grp);
void sparx5_ifh_parse(u32 *ifh, struct frame_info *info);
irqreturn_t sparx5_xtr_handler(int irq, void *_priv);
-int sparx5_port_xmit_impl(struct sk_buff *skb, struct net_device *dev);
+netdev_tx_t sparx5_port_xmit_impl(struct sk_buff *skb, struct net_device *dev);
int sparx5_manual_injection_mode(struct sparx5 *sparx5);
void sparx5_port_inj_timer_setup(struct sparx5_port *port);
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c
index 21844beba72d..83c16ca5b30f 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_packet.c
@@ -222,13 +222,13 @@ static int sparx5_inject(struct sparx5 *sparx5,
return NETDEV_TX_OK;
}
-int sparx5_port_xmit_impl(struct sk_buff *skb, struct net_device *dev)
+netdev_tx_t sparx5_port_xmit_impl(struct sk_buff *skb, struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
struct sparx5_port *port = netdev_priv(dev);
struct sparx5 *sparx5 = port->sparx5;
u32 ifh[IFH_LEN];
- int ret;
+ netdev_tx_t ret;
memset(ifh, 0, IFH_LEN * 4);
sparx5_set_port_ifh(ifh, port->portno);
--
2.35.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread