| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20190830004635.24863-8-olteanv@gmail.com>
Date: Fri, 30 Aug 2019 03:46:27 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: f.fainelli@...il.com, vivien.didelot@...il.com, andrew@...n.ch,
davem@...emloft.net, vinicius.gomes@...el.com,
vedang.patel@...el.com, richardcochran@...il.com
Cc: weifeng.voon@...el.com, jiri@...lanox.com, m-karicheri2@...com,
Jose.Abreu@...opsys.com, ilias.apalodimas@...aro.org,
--to=jhs@...atatu.com, --to=xiyou.wangcong@...il.com,
netdev@...r.kernel.org, Vladimir Oltean <olteanv@...il.com>
Subject: [RFC PATCH v2 net-next 07/15] net: dsa: sja1105: Move PTP data to its own private structure
Reduce the size of the sja1105_private structure when
CONFIG_NET_DSA_SJA1105_PTP is not enabled. Also make the PTP code a
little bit more self-contained.
Signed-off-by: Vladimir Oltean <olteanv@...il.com>
---
drivers/net/dsa/sja1105/sja1105.h | 20 +------
drivers/net/dsa/sja1105/sja1105_main.c | 12 ++--
drivers/net/dsa/sja1105/sja1105_ptp.c | 81 +++++++++++++++-----------
drivers/net/dsa/sja1105/sja1105_ptp.h | 29 +++++++++
4 files changed, 84 insertions(+), 58 deletions(-)
diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index c80be59dafbd..3ca0b87aa3e4 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -20,6 +20,8 @@
*/
#define SJA1105_AGEING_TIME_MS(ms) ((ms) / 10)
+#include "sja1105_ptp.h"
+
/* Keeps the different addresses between E/T and P/Q/R/S */
struct sja1105_regs {
u64 device_id;
@@ -49,17 +51,6 @@ struct sja1105_regs {
u64 qlevel[SJA1105_NUM_PORTS];
};
-enum sja1105_ptp_clk_mode {
- PTP_ADD_MODE = 1,
- PTP_SET_MODE = 0,
-};
-
-struct sja1105_ptp_cmd {
- u64 resptp; /* reset */
- u64 corrclk4ts; /* use the corrected clock for timestamps */
- u64 ptpclkadd; /* enum sja1105_ptp_clk_mode */
-};
-
struct sja1105_info {
u64 device_id;
/* Needed for distinction between P and R, and between Q and S
@@ -99,20 +90,15 @@ struct sja1105_private {
struct spi_device *spidev;
struct dsa_switch *ds;
struct sja1105_port ports[SJA1105_NUM_PORTS];
- struct sja1105_ptp_cmd ptp_cmd;
- struct ptp_clock_info ptp_caps;
- struct ptp_clock *clock;
- /* Serializes all operations on the PTP hardware clock */
- struct mutex ptp_lock;
/* Serializes transmission of management frames so that
* the switch doesn't confuse them with one another.
*/
struct mutex mgmt_lock;
struct sja1105_tagger_data tagger_data;
+ struct sja1105_ptp_data ptp_data;
};
#include "sja1105_dynamic_config.h"
-#include "sja1105_ptp.h"
struct sja1105_spi_message {
u64 access;
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index d92f15b3aea9..670c069722d5 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1406,7 +1406,7 @@ static int sja1105_static_config_reload(struct sja1105_private *priv)
}
/* No PTP operations can run right now */
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&priv->ptp_data.lock);
ptpclkval = __sja1105_ptp_gettimex(priv, &ptp_sts_before);
@@ -1433,7 +1433,7 @@ static int sja1105_static_config_reload(struct sja1105_private *priv)
__sja1105_ptp_adjtime(priv, ptpclkval);
out_unlock_ptp:
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&priv->ptp_data.lock);
/* Configure the CGU (PLLs) for MII and RMII PHYs.
* For these interfaces there is no dynamic configuration
@@ -1876,7 +1876,7 @@ static netdev_tx_t sja1105_port_deferred_xmit(struct dsa_switch *ds, int port,
skb_shinfo(clone)->tx_flags |= SKBTX_IN_PROGRESS;
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&priv->ptp_data.lock);
ticks = sja1105_ptpclkval_read(priv, NULL);
@@ -1893,7 +1893,7 @@ static netdev_tx_t sja1105_port_deferred_xmit(struct dsa_switch *ds, int port,
skb_complete_tx_timestamp(clone, &shwt);
out_unlock_ptp:
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&priv->ptp_data.lock);
out:
mutex_unlock(&priv->mgmt_lock);
return NETDEV_TX_OK;
@@ -2029,7 +2029,7 @@ static void sja1105_rxtstamp_work(struct work_struct *work)
struct sk_buff *skb;
u64 ticks;
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&priv->ptp_data.lock);
ticks = sja1105_ptpclkval_read(priv, NULL);
@@ -2046,7 +2046,7 @@ static void sja1105_rxtstamp_work(struct work_struct *work)
netif_rx_ni(skb);
}
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&priv->ptp_data.lock);
}
/* Called from dsa_skb_defer_rx_timestamp */
diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.c b/drivers/net/dsa/sja1105/sja1105_ptp.c
index a7722c0944fb..f85f44bdab31 100644
--- a/drivers/net/dsa/sja1105/sja1105_ptp.c
+++ b/drivers/net/dsa/sja1105/sja1105_ptp.c
@@ -34,7 +34,10 @@
#define SJA1105_CC_MULT_DEM 15625
#define SJA1105_CC_MULT 0x80000000
-#define ptp_to_sja1105(d) container_of((d), struct sja1105_private, ptp_caps)
+#define ptp_to_sja1105_data(d) \
+ container_of((d), struct sja1105_ptp_data, caps)
+#define ptp_data_to_sja1105(d) \
+ container_of((d), struct sja1105_private, ptp_data)
int sja1105_get_ts_info(struct dsa_switch *ds, int port,
struct ethtool_ts_info *info)
@@ -42,7 +45,7 @@ int sja1105_get_ts_info(struct dsa_switch *ds, int port,
struct sja1105_private *priv = ds->priv;
/* Called during cleanup */
- if (!priv->clock)
+ if (!priv->ptp_data.clock)
return -ENODEV;
info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
@@ -52,7 +55,7 @@ int sja1105_get_ts_info(struct dsa_switch *ds, int port,
(1 << HWTSTAMP_TX_ON);
info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
(1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT);
- info->phc_index = ptp_clock_index(priv->clock);
+ info->phc_index = ptp_clock_index(priv->ptp_data.clock);
return 0;
}
@@ -200,22 +203,23 @@ int sja1105_ptpegr_ts_poll(struct sja1105_private *priv, int port, u64 *ts)
int sja1105_ptp_reset(struct sja1105_private *priv)
{
- struct sja1105_ptp_cmd cmd = priv->ptp_cmd;
+ struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
+ struct sja1105_ptp_cmd cmd = ptp_data->cmd;
int rc;
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&ptp_data->lock);
cmd.resptp = 1;
dev_dbg(priv->ds->dev, "Resetting PTP clock\n");
rc = priv->info->ptp_cmd(priv, &cmd);
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&ptp_data->lock);
return rc;
}
-/* Caller must hold priv->ptp_lock */
+/* Caller must hold priv->ptp_data.lock */
u64 __sja1105_ptp_gettimex(struct sja1105_private *priv,
struct ptp_system_timestamp *sts)
{
@@ -230,30 +234,31 @@ static int sja1105_ptp_gettimex(struct ptp_clock_info *ptp,
struct timespec64 *ts,
struct ptp_system_timestamp *sts)
{
- struct sja1105_private *priv = ptp_to_sja1105(ptp);
+ struct sja1105_ptp_data *ptp_data = ptp_to_sja1105_data(ptp);
+ struct sja1105_private *priv = ptp_data_to_sja1105(ptp_data);
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&ptp_data->lock);
*ts = ns_to_timespec64(__sja1105_ptp_gettimex(priv, sts));
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&ptp_data->lock);
return 0;
}
-/* Caller must hold priv->ptp_lock */
+/* Caller must hold priv->ptp_data.lock */
static int sja1105_ptp_mode_set(struct sja1105_private *priv,
enum sja1105_ptp_clk_mode mode)
{
- if (priv->ptp_cmd.ptpclkadd == mode)
+ if (priv->ptp_data.cmd.ptpclkadd == mode)
return 0;
- priv->ptp_cmd.ptpclkadd = mode;
+ priv->ptp_data.cmd.ptpclkadd = mode;
- return priv->info->ptp_cmd(priv, &priv->ptp_cmd);
+ return priv->info->ptp_cmd(priv, &priv->ptp_data.cmd);
}
-/* Caller must hold priv->ptp_lock */
+/* Caller must hold priv->ptp_data.lock */
static int sja1105_ptpclkval_write(struct sja1105_private *priv, u64 val,
struct ptp_system_timestamp *ptp_sts)
{
@@ -282,22 +287,24 @@ int __sja1105_ptp_settime(struct sja1105_private *priv, u64 ns,
static int sja1105_ptp_settime(struct ptp_clock_info *ptp,
const struct timespec64 *ts)
{
- struct sja1105_private *priv = ptp_to_sja1105(ptp);
+ struct sja1105_ptp_data *ptp_data = ptp_to_sja1105_data(ptp);
+ struct sja1105_private *priv = ptp_data_to_sja1105(ptp_data);
u64 ns = timespec64_to_ns(ts);
int rc;
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&ptp_data->lock);
rc = __sja1105_ptp_settime(priv, ns, NULL);
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&ptp_data->lock);
return rc;
}
static int sja1105_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
{
- struct sja1105_private *priv = ptp_to_sja1105(ptp);
+ struct sja1105_ptp_data *ptp_data = ptp_to_sja1105_data(ptp);
+ struct sja1105_private *priv = ptp_data_to_sja1105(ptp_data);
const struct sja1105_regs *regs = priv->info->regs;
s64 clkrate;
int rc;
@@ -309,17 +316,17 @@ static int sja1105_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
clkrate = SJA1105_CC_MULT + clkrate;
clkrate &= GENMASK_ULL(31, 0);
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&priv->ptp_data.lock);
rc = sja1105_spi_send_int(priv, SPI_WRITE, regs->ptpclkrate,
&clkrate, 4, NULL);
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&priv->ptp_data.lock);
return rc;
}
-/* Caller must hold priv->ptp_lock */
+/* Caller must hold priv->ptp_data.lock */
u64 sja1105_ptpclkval_read(struct sja1105_private *priv,
struct ptp_system_timestamp *sts)
{
@@ -354,23 +361,25 @@ int __sja1105_ptp_adjtime(struct sja1105_private *priv, s64 delta)
static int sja1105_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
{
- struct sja1105_private *priv = ptp_to_sja1105(ptp);
+ struct sja1105_ptp_data *ptp_data = ptp_to_sja1105_data(ptp);
+ struct sja1105_private *priv = ptp_data_to_sja1105(ptp_data);
int rc;
- mutex_lock(&priv->ptp_lock);
+ mutex_lock(&ptp_data->lock);
rc = __sja1105_ptp_adjtime(priv, delta);
- mutex_unlock(&priv->ptp_lock);
+ mutex_unlock(&ptp_data->lock);
return rc;
}
int sja1105_ptp_clock_register(struct sja1105_private *priv)
{
+ struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
struct dsa_switch *ds = priv->ds;
- priv->ptp_caps = (struct ptp_clock_info) {
+ ptp_data->caps = (struct ptp_clock_info) {
.owner = THIS_MODULE,
.name = "SJA1105 PHC",
.adjfine = sja1105_ptp_adjfine,
@@ -380,23 +389,25 @@ int sja1105_ptp_clock_register(struct sja1105_private *priv)
.max_adj = SJA1105_MAX_ADJ_PPB,
};
- mutex_init(&priv->ptp_lock);
+ mutex_init(&ptp_data->lock);
- priv->clock = ptp_clock_register(&priv->ptp_caps, ds->dev);
- if (IS_ERR_OR_NULL(priv->clock))
- return PTR_ERR(priv->clock);
+ ptp_data->clock = ptp_clock_register(&ptp_data->caps, ds->dev);
+ if (IS_ERR_OR_NULL(ptp_data->clock))
+ return PTR_ERR(ptp_data->clock);
- priv->ptp_cmd.corrclk4ts = true;
- priv->ptp_cmd.ptpclkadd = PTP_SET_MODE;
+ ptp_data->cmd.corrclk4ts = true;
+ ptp_data->cmd.ptpclkadd = PTP_SET_MODE;
return sja1105_ptp_reset(priv);
}
void sja1105_ptp_clock_unregister(struct sja1105_private *priv)
{
- if (IS_ERR_OR_NULL(priv->clock))
+ struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
+
+ if (IS_ERR_OR_NULL(ptp_data->clock))
return;
- ptp_clock_unregister(priv->clock);
- priv->clock = NULL;
+ ptp_clock_unregister(ptp_data->clock);
+ ptp_data->clock = NULL;
}
diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.h b/drivers/net/dsa/sja1105/sja1105_ptp.h
index c699611e585d..dfe856200394 100644
--- a/drivers/net/dsa/sja1105/sja1105_ptp.h
+++ b/drivers/net/dsa/sja1105/sja1105_ptp.h
@@ -19,8 +19,29 @@ static inline s64 sja1105_ticks_to_ns(s64 ticks)
return ticks * SJA1105_TICK_NS;
}
+struct sja1105_private;
+
#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP)
+enum sja1105_ptp_clk_mode {
+ PTP_ADD_MODE = 1,
+ PTP_SET_MODE = 0,
+};
+
+struct sja1105_ptp_cmd {
+ u64 resptp; /* reset */
+ u64 corrclk4ts; /* use the corrected clock for timestamps */
+ u64 ptpclkadd; /* enum sja1105_ptp_clk_mode */
+};
+
+struct sja1105_ptp_data {
+ struct sja1105_ptp_cmd cmd;
+ struct ptp_clock_info caps;
+ struct ptp_clock *clock;
+ /* Serializes all operations on the PTP hardware clock */
+ struct mutex lock;
+};
+
int sja1105_ptp_clock_register(struct sja1105_private *priv);
void sja1105_ptp_clock_unregister(struct sja1105_private *priv);
@@ -52,6 +73,14 @@ int __sja1105_ptp_adjtime(struct sja1105_private *priv, s64 delta);
#else
+/* Structures cannot be empty in C. Bah!
+ * Keep the mutex as the only element, which is a bit more difficult to
+ * refactor out of sja1105_main.c anyway.
+ */
+struct sja1105_ptp_data {
+ struct mutex lock;
+};
+
static inline int sja1105_ptp_clock_register(struct sja1105_private *priv)
{
return 0;
--
2.17.1
Powered by blists - more mailing lists