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Message-ID: <20231026-ethtool_puts_impl-v2-1-0d67cbdd0538@google.com>
Date: Thu, 26 Oct 2023 21:56:07 +0000
From: Justin Stitt <justinstitt@...gle.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Shay Agroskin <shayagr@...zon.com>,
Arthur Kiyanovski <akiyano@...zon.com>,
David Arinzon <darinzon@...zon.com>,
Noam Dagan <ndagan@...zon.com>,
Saeed Bishara <saeedb@...zon.com>,
Rasesh Mody <rmody@...vell.com>,
Sudarsana Kalluru <skalluru@...vell.com>,
GR-Linux-NIC-Dev@...vell.com,
Dimitris Michailidis <dmichail@...gible.com>,
Yisen Zhuang <yisen.zhuang@...wei.com>,
Salil Mehta <salil.mehta@...wei.com>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
Louis Peens <louis.peens@...igine.com>,
Shannon Nelson <shannon.nelson@....com>,
Brett Creeley <brett.creeley@....com>, drivers@...sando.io,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
Ronak Doshi <doshir@...are.com>,
VMware PV-Drivers Reviewers <pv-drivers@...are.com>,
Andy Whitcroft <apw@...onical.com>,
Joe Perches <joe@...ches.com>,
Dwaipayan Ray <dwaipayanray1@...il.com>,
Lukas Bulwahn <lukas.bulwahn@...il.com>,
Hauke Mehrtens <hauke@...ke-m.de>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"Arınç ÜNAL" <arinc.unal@...nc9.com>,
Daniel Golle <daniel@...rotopia.org>,
Landen Chao <Landen.Chao@...iatek.com>,
DENG Qingfang <dqfext@...il.com>,
Sean Wang <sean.wang@...iatek.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Linus Walleij <linus.walleij@...aro.org>,
"Alvin Šipraga" <alsi@...g-olufsen.dk>,
Wei Fang <wei.fang@....com>,
Shenwei Wang <shenwei.wang@....com>,
Clark Wang <xiaoning.wang@....com>,
NXP Linux Team <linux-imx@....com>,
Lars Povlsen <lars.povlsen@...rochip.com>,
Steen Hegelund <Steen.Hegelund@...rochip.com>,
Daniel Machon <daniel.machon@...rochip.com>,
UNGLinuxDriver@...rochip.com, Jiawen Wu <jiawenwu@...stnetic.com>,
Mengyuan Lou <mengyuanlou@...-swift.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
Nick Desaulniers <ndesaulniers@...gle.com>,
Nathan Chancellor <nathan@...nel.org>,
Kees Cook <keescook@...omium.org>,
intel-wired-lan@...ts.osuosl.org, oss-drivers@...igine.com,
linux-hyperv@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, bpf@...r.kernel.org,
Justin Stitt <justinstitt@...gle.com>
Subject: [PATCH next v2 1/3] ethtool: Implement ethtool_puts()
Use strscpy() to implement ethtool_puts().
Functionally the same as ethtool_sprintf() when it's used with two
arguments or with just "%s" format specifier.
Signed-off-by: Justin Stitt <justinstitt@...gle.com>
---
include/linux/ethtool.h | 34 +++++++++++++++++++++++-----------
net/ethtool/ioctl.c | 7 +++++++
2 files changed, 30 insertions(+), 11 deletions(-)
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 226a36ed5aa1..7129dd2e227c 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -1053,22 +1053,34 @@ static inline int ethtool_mm_frag_size_min_to_add(u32 val_min, u32 *val_add,
*/
extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
+/**
+ * ethtool_puts - Write string to ethtool string data
+ * @data: Pointer to start of string to update
+ * @str: String to write
+ *
+ * Write string to data. Update data to point at start of next
+ * string.
+ *
+ * Prefer this function to ethtool_sprintf() when given only
+ * two arguments or if @fmt is just "%s".
+ */
+extern void ethtool_puts(u8 **data, const char *str);
+
/* Link mode to forced speed capabilities maps */
struct ethtool_forced_speed_map {
- u32 speed;
+ u32 speed;
__ETHTOOL_DECLARE_LINK_MODE_MASK(caps);
- const u32 *cap_arr;
- u32 arr_size;
+ const u32 *cap_arr;
+ u32 arr_size;
};
-#define ETHTOOL_FORCED_SPEED_MAP(prefix, value) \
-{ \
- .speed = SPEED_##value, \
- .cap_arr = prefix##_##value, \
- .arr_size = ARRAY_SIZE(prefix##_##value), \
-}
+#define ETHTOOL_FORCED_SPEED_MAP(prefix, value) \
+ { \
+ .speed = SPEED_##value, .cap_arr = prefix##_##value, \
+ .arr_size = ARRAY_SIZE(prefix##_##value), \
+ }
-void
-ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps, u32 size);
+void ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps,
+ u32 size);
#endif /* _LINUX_ETHTOOL_H */
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 0b0ce4f81c01..abdf05edf804 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1991,6 +1991,13 @@ __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
}
EXPORT_SYMBOL(ethtool_sprintf);
+void ethtool_puts(u8 **data, const char *str)
+{
+ strscpy(*data, str, ETH_GSTRING_LEN);
+ *data += ETH_GSTRING_LEN;
+}
+EXPORT_SYMBOL(ethtool_puts);
+
static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
{
struct ethtool_value id;
--
2.42.0.820.g83a721a137-goog
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