From nobody Mon Sep 16 18:54:24 2024 Received: from out-175.mta1.migadu.com (out-175.mta1.migadu.com [95.215.58.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D182EA8 for ; Sat, 30 Dec 2023 02:49:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="B7QJj8C6" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1703904580; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=i59hKRxb9raxsP0miossJSre0249qr+cHgBrRC814d0=; b=B7QJj8C6Rz0QpVomd4fU4nyR65gAcM5rhDroOShO+y9y1BO/wDtQIAiFs6G/irQb+m3YLl NRR8t6atxJv1v8GtVNyrUn/ZPa1MwnEuD6wBVIpR2Ea/kls95hJMaxB81GtJlQRkqRd303 UNKP+ot1LicYmVyap56RIBsmvxsHzmE= From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v7 23/24] mptcp: set error messages for set_flags Date: Sat, 30 Dec 2023 10:48:18 +0800 Message-Id: <98296480a16748edf4ff313248bdb55724c683c2.1703904325.git.geliang.tang@linux.dev> In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" In addition to returning the error value, this patch also sets an error messages with GENL_SET_ERR_MSG or NL_SET_ERR_MSG_ATTR both for pm_netlink.c and pm_userspace.c. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 6 +++++- net/mptcp/pm_userspace.c | 9 +++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index a94e38e01631..5b7f08b9b0f0 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1906,8 +1906,10 @@ int mptcp_pm_nl_set_flags(struct sk_buff *skb, struc= t genl_info *info) =20 if (addr.addr.family =3D=3D AF_UNSPEC) { lookup_by_id =3D 1; - if (!addr.addr.id) + if (!addr.addr.id) { + GENL_SET_ERR_MSG(info, "missing required inputs"); return -EOPNOTSUPP; + } } =20 if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP) @@ -1917,11 +1919,13 @@ int mptcp_pm_nl_set_flags(struct sk_buff *skb, stru= ct genl_info *info) entry =3D __lookup_addr(pernet, &addr.addr, lookup_by_id); if (!entry) { spin_unlock_bh(&pernet->lock); + GENL_SET_ERR_MSG(info, "address not found"); return -EINVAL; } if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { spin_unlock_bh(&pernet->lock); + GENL_SET_ERR_MSG(info, "invalid addr flags"); return -EINVAL; } =20 diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 5a734fa25e8d..b5aa272c83b4 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -568,13 +568,17 @@ int mptcp_userspace_pm_set_flags(struct sk_buff *skb,= struct genl_info *info) token_val =3D nla_get_u32(token); =20 msk =3D mptcp_token_get_sock(net, token_val); - if (!msk) + if (!msk) { + NL_SET_ERR_MSG_ATTR(info->extack, token, "invalid token"); return ret; + } =20 sk =3D (struct sock *)msk; =20 - if (!mptcp_pm_is_userspace(msk)) + if (!mptcp_pm_is_userspace(msk)) { + GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected"); goto set_flags_err; + } =20 ret =3D mptcp_pm_parse_entry(attr, info, false, &loc); if (ret < 0) @@ -588,6 +592,7 @@ int mptcp_userspace_pm_set_flags(struct sk_buff *skb, s= truct genl_info *info) =20 if (loc.addr.family =3D=3D AF_UNSPEC || rem.addr.family =3D=3D AF_UNSPEC) { + GENL_SET_ERR_MSG(info, "address families do not match"); ret =3D -EINVAL; goto set_flags_err; } --=20 2.39.2