target/linux/generic/backport-5.15/894-v6.8-net-ethtool-implement-ethtool_puts.patch

   1 From mboxrd@z Thu Jan  1 00:00:00 1970
   2 Authentication-Results: smtp.subspace.kernel.org;
   3         dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="sMUeie/T"
   4 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49])
   5         by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84BB8D6D
   6         for <bpf@vger.kernel.org>; Wed,  6 Dec 2023 15:16:16 -0800 (PST)
   7 Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-db5416d0fccso403298276.1
   8         for <bpf@vger.kernel.org>; Wed, 06 Dec 2023 15:16:16 -0800 (PST)
   9 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
  10         d=google.com; s=20230601; t=1701904575; x=1702509375; darn=vger.kernel.org;
  11         h=cc:to:from:subject:message-id:references:mime-version:in-reply-to
  12          :date:from:to:cc:subject:date:message-id:reply-to;
  13         bh=/7eYcPC4ZNNyPcPPs0B5tDplF0arxw3r0vINNNou0rY=;
  14         b=sMUeie/TxdytzC0EyT11QWi1TqTtiv7KCTs1F2vLmUUvPKNA3+1MHFo8ECW+0gQuDE
  15          FGrgdZKGK5mXQgkF0N3JiSLvKO8tpQOIB57JLCG5IVy5dr2vVv0ExU3Dag2Cc4oBIBIO
  16          w/cH95O1oPlvluIpATmAsxenVr7mFomU63BqYiRGLaEhWeb2hJ636GO8lubtsDfdFFoi
  17          GPOL2tQwV93VnqmywBBpFaNAULN0UoCFhfkKv5prvpkXq19sWI7zyorVZ+rdTYem5m4T
  18          dXsDaLXPtC3Dh2JOad1duSQIah/wCHYYUcV3IoFhwj2y0Uk/TTCrnZPORweSADcEy6Ho
  19          vDrA==
  20 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
  21         d=1e100.net; s=20230601; t=1701904575; x=1702509375;
  22         h=cc:to:from:subject:message-id:references:mime-version:in-reply-to
  23          :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to;
  24         bh=/7eYcPC4ZNNyPcPPs0B5tDplF0arxw3r0vINNNou0rY=;
  25         b=Dmc6aSntxPlxAk72zVO1G9WoZnFtLolxENlLscYYAHG3VE+PQ8gGN2rPzcGoKb2Btb
  26          4b0PvjOzSlPQyghahdhdlz04RtAeeGG/MkfNiYjFql5OifIoovb51kroiPYrVsa7Ps7Y
  27          +Pxug0+NPdTm5s9TNz940ZKl3GRME8UTmVxpWJRX03XMOqb6Wgsh2SK9ahXKc4yRsi62
  28          3a3J72WmmSgvimxwM/99fXwvoUQpiv2J1xCoqc1Ng4q4qSuZvzmHN7ZTGaUhLxOqLeLK
  29          3W4RKHW6rZ7UjppuB6I3NXW+D344By2rdKp1sRXpjdQ0GS3YUcvlRETcJBXJudHfQP5Y
  30          CLOw==
  31 X-Gm-Message-State: AOJu0YzdCTLdwny+N99zeMgyKqFsEZhfIhL2cbgKA6zC1U/OLkxxRLoM
  32         XrYVBC9DmxCGmP4o+M/Z/kHUew/9faHlCiLGxw==
  33 X-Google-Smtp-Source: AGHT+IFRXxBV6JuX5Cl/k2o1+WKkCwkR8j20MJSkmoGCedPAtqFttH8OVh1/6vdfnq8MPN++A2h89peZQhyG8OsJ8A==
  34 X-Received: from jstitt-linux1.c.googlers.com ([fda3:e722:ac3:cc00:2b:ff92:c0a8:23b5])
  35  (user=justinstitt job=sendgmr) by 2002:a25:dac7:0:b0:da0:3117:f35 with SMTP
  36  id n190-20020a25dac7000000b00da031170f35mr28652ybf.3.1701904575576; Wed, 06
  37  Dec 2023 15:16:15 -0800 (PST)
  38 Date: Wed, 06 Dec 2023 23:16:10 +0000
  39 In-Reply-To: <20231206-ethtool_puts_impl-v5-0-5a2528e17bf8@google.com>
  40 Precedence: bulk
  41 X-Mailing-List: bpf@vger.kernel.org
  42 List-Id: <bpf.vger.kernel.org>
  43 List-Subscribe: <mailto:bpf+subscribe@vger.kernel.org>
  44 List-Unsubscribe: <mailto:bpf+unsubscribe@vger.kernel.org>
  45 Mime-Version: 1.0
  46 References: <20231206-ethtool_puts_impl-v5-0-5a2528e17bf8@google.com>
  47 X-Developer-Key: i=justinstitt@google.com; a=ed25519; pk=tC3hNkJQTpNX/gLKxTNQKDmiQl6QjBNCGKJINqAdJsE=
  48 X-Developer-Signature: v=1; a=ed25519-sha256; t=1701904573; l=1840;
  49  i=justinstitt@google.com; s=20230717; h=from:subject:message-id;
  50  bh=UMdetIL2ZsPIkSodqhw2fM21NHJVjCu0lRImFuNhVoM=; b=a8rMnXfVVQ5gsxHWG4WRMwOLxZgflqXZtNuKx26vv4DwYvvCtCiYjl3f1frOjV/Ul2kaxq5g/
  51  b/UOv678JKCDASVokxG5GJifAnU7/kqRxdhcwfRkrD8RUfcsmiZOfyF
  52 X-Mailer: b4 0.12.3
  53 Message-ID: <20231206-ethtool_puts_impl-v5-1-5a2528e17bf8@google.com>
  54 Subject: [PATCH net-next v5 1/3] ethtool: Implement ethtool_puts()
  55 From: justinstitt@google.com
  56 To: "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>,
  57         Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, Shay Agroskin <shayagr@amazon.com>,
  58         Arthur Kiyanovski <akiyano@amazon.com>, David Arinzon <darinzon@amazon.com>, Noam Dagan <ndagan@amazon.com>,
  59         Saeed Bishara <saeedb@amazon.com>, Rasesh Mody <rmody@marvell.com>,
  60         Sudarsana Kalluru <skalluru@marvell.com>, GR-Linux-NIC-Dev@marvell.com,
  61         Dimitris Michailidis <dmichail@fungible.com>, Yisen Zhuang <yisen.zhuang@huawei.com>,
  62         Salil Mehta <salil.mehta@huawei.com>, Jesse Brandeburg <jesse.brandeburg@intel.com>,
  63         Tony Nguyen <anthony.l.nguyen@intel.com>, Louis Peens <louis.peens@corigine.com>,
  64         Shannon Nelson <shannon.nelson@amd.com>, Brett Creeley <brett.creeley@amd.com>, drivers@pensando.io,
  65         "K. Y. Srinivasan" <kys@microsoft.com>, Haiyang Zhang <haiyangz@microsoft.com>, Wei Liu <wei.liu@kernel.org>,
  66         Dexuan Cui <decui@microsoft.com>, Ronak Doshi <doshir@vmware.com>,
  67         VMware PV-Drivers Reviewers <pv-drivers@vmware.com>, Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>,
  68         Dwaipayan Ray <dwaipayanray1@gmail.com>, Lukas Bulwahn <lukas.bulwahn@gmail.com>,
  69         Hauke Mehrtens <hauke@hauke-m.de>, Andrew Lunn <andrew@lunn.ch>,
  70         Florian Fainelli <f.fainelli@gmail.com>, Vladimir Oltean <olteanv@gmail.com>,
  71         "=?utf-8?q?Ar=C4=B1n=C3=A7_=C3=9CNAL?=" <arinc.unal@arinc9.com>, Daniel Golle <daniel@makrotopia.org>,
  72         Landen Chao <Landen.Chao@mediatek.com>, DENG Qingfang <dqfext@gmail.com>,
  73         Sean Wang <sean.wang@mediatek.com>, Matthias Brugger <matthias.bgg@gmail.com>,
  74         AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
  75         Linus Walleij <linus.walleij@linaro.org>,
  76         "=?utf-8?q?Alvin_=C5=A0ipraga?=" <alsi@bang-olufsen.dk>, Wei Fang <wei.fang@nxp.com>,
  77         Shenwei Wang <shenwei.wang@nxp.com>, Clark Wang <xiaoning.wang@nxp.com>,
  78         NXP Linux Team <linux-imx@nxp.com>, Lars Povlsen <lars.povlsen@microchip.com>,
  79         Steen Hegelund <Steen.Hegelund@microchip.com>, Daniel Machon <daniel.machon@microchip.com>,
  80         UNGLinuxDriver@microchip.com, Jiawen Wu <jiawenwu@trustnetic.com>,
  81         Mengyuan Lou <mengyuanlou@net-swift.com>, Heiner Kallweit <hkallweit1@gmail.com>,
  82         Russell King <linux@armlinux.org.uk>, Alexei Starovoitov <ast@kernel.org>,
  83         Daniel Borkmann <daniel@iogearbox.net>, Jesper Dangaard Brouer <hawk@kernel.org>,
  84         John Fastabend <john.fastabend@gmail.com>
  85 Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
  86         Nick Desaulniers <ndesaulniers@google.com>, Nathan Chancellor <nathan@kernel.org>,
  87         Kees Cook <keescook@chromium.org>, intel-wired-lan@lists.osuosl.org,
  88         oss-drivers@corigine.com, linux-hyperv@vger.kernel.org,
  89         linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org,
  90         bpf@vger.kernel.org, Justin Stitt <justinstitt@google.com>
  91 Content-Type: text/plain; charset="utf-8"
  92
  93 Use strscpy() to implement ethtool_puts().
  94
  95 Functionally the same as ethtool_sprintf() when it's used with two
  96 arguments or with just "%s" format specifier.
  97
  98 Signed-off-by: Justin Stitt <justinstitt@google.com>
  99 ---
 100  include/linux/ethtool.h | 13 +++++++++++++
 101  net/ethtool/ioctl.c     |  7 +++++++
 102  2 files changed, 20 insertions(+)
 103
 104 --- a/include/linux/ethtool.h
 105 +++ b/include/linux/ethtool.h
 106 @@ -788,4 +788,17 @@ int ethtool_get_phc_vclocks(struct net_d
 107   * next string.
 108   */
 109  extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
 110 +
 111 +/**
 112 + * ethtool_puts - Write string to ethtool string data
 113 + * @data: Pointer to a pointer to the start of string to update
 114 + * @str: String to write
 115 + *
 116 + * Write string to *data without a trailing newline. Update *data
 117 + * to point at start of next string.
 118 + *
 119 + * Prefer this function to ethtool_sprintf() when given only
 120 + * two arguments or if @fmt is just "%s".
 121 + */
 122 +extern void ethtool_puts(u8 **data, const char *str);
 123  #endif /* _LINUX_ETHTOOL_H */
 124 --- a/net/ethtool/ioctl.c
 125 +++ b/net/ethtool/ioctl.c
 126 @@ -1954,6 +1954,13 @@ __printf(2, 3) void ethtool_sprintf(u8 *
 127  }
 128  EXPORT_SYMBOL(ethtool_sprintf);
 129
 130 +void ethtool_puts(u8 **data, const char *str)
 131 +{
 132 +       strscpy(*data, str, ETH_GSTRING_LEN);
 133 +       *data += ETH_GSTRING_LEN;
 134 +}
 135 +EXPORT_SYMBOL(ethtool_puts);
 136 +
 137  static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
 138  {
 139         struct ethtool_value id;