From patchwork Thu Jan 16 16:51:30 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthieu Baerts X-Patchwork-Id: 13941995 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6B15F2416B8; Thu, 16 Jan 2025 16:54:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737046495; cv=none; b=NW80VKJkFlPL/xYjjFkn8c1j6STn8bxlgki1Akgeg+YCWGVVHTQ3VZLa9rjraeGHeY0EWOvfdxSPFA3Xbotdr1ecRHhVNfBTtA/UyS0S8C1dBE9yG3qAnsOpRbT63euO0/SYL0khHSMKK/eliAPCPMW12SFlTKVdw9uiRdn3wug= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737046495; c=relaxed/simple; bh=59FzKF1u2GGsoOoRmtQfpYMeM5tjI0LbHfzsM02NFM4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bEA/DPFkRhXnEg4FxnUzMQI4kCGKqhj6X0NGzYsMuv1cTcdv9aG1+dOo4mwH5qYvNNTXwWUfY6X6TEPwnRaRxurh74S4te475LpOIGNplwEVvOyuivzMKRSU10S0T+GVknikGhDTlcUkOG9gexjyo9ex2lzmKnXrhGHuaJ8ZtJU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a2jot5AU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a2jot5AU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 136A9C4CEE6; Thu, 16 Jan 2025 16:54:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737046495; bh=59FzKF1u2GGsoOoRmtQfpYMeM5tjI0LbHfzsM02NFM4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=a2jot5AU5vJbZG982+VblX5SsUohW3i4EEZChyH/wryfSu6xa+VtBluzAHBhSHPai 9u8Kfu4iHFzu/xvdJyFz2NOTLwqvMNIdxiNlIg0Y3w3wnh/sR7qAB9wYrscIm2N/sj nplwPiSQRv2VfVHFTsQoq9rCFI9PwGykYQu8VG3aimCVsLbuR2NkvOsfi4TnfsEFvm P43/h357FPLQ8DwZnQ/bBylTsAcG4JlbSQfskiyEiyURDFSGudBHkCZ7AkTUmtni/N EHseScrm5ZbugC+TzI20KvNozcQksf8Z1CFGOw2CB20M6Q1fQZUux2IvEVYAKYG7dK k/9zYHpvL9/aQ== From: "Matthieu Baerts (NGI0)" Date: Thu, 16 Jan 2025 17:51:30 +0100 Subject: [PATCH net-next 08/15] mptcp: pm: use NL_SET_ERR_MSG_ATTR when possible Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250116-net-next-mptcp-pm-misc-cleanup-2-v1-8-c0b43f18fe06@kernel.org> References: <20250116-net-next-mptcp-pm-misc-cleanup-2-v1-0-c0b43f18fe06@kernel.org> In-Reply-To: <20250116-net-next-mptcp-pm-misc-cleanup-2-v1-0-c0b43f18fe06@kernel.org> To: mptcp@lists.linux.dev, Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Matthieu Baerts (NGI0)" X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=7479; i=matttbe@kernel.org; h=from:subject:message-id; bh=59FzKF1u2GGsoOoRmtQfpYMeM5tjI0LbHfzsM02NFM4=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBniTnGx1Z2dDYmycAcrHiNQ2XmZd3vZcsUVbXWO v8OtUk0xvKJAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZ4k5xgAKCRD2t4JPQmmg c9cjEADabaoDJQx29XGd32SHjiSngwES1RDnsP68VVl/xs1GwH9tC1liQuiyrmDpOcpAVItKtDZ JnyYSUCDGkS1dYqsgPRJ8ZNGmwhe51OizOBAitNS/am/jwu5QzDcnB8S3zS22zTYzlb0X7zJbiV WdT/Q/7+HYbNz3/dgW0x0tzhZMQ61W2WnSUZZ5lVow8uyKIwhviy6DSItWLdb2u+7a9xzl1M/lx xvEv7SKqgT5dlV78PlpCoNP3tvNuBXjw2+TAZyVKUDfpeUIvVBaZouR+9JTMqu2d7Rco3kjJumd cU3pkm796ugPIZhfTbFnm83p6oL58gZQXPhiRzbXvxE/d6EYCtXgikjwHbwe98N6hCCfc9O1WBx 3GpOX4svW9Y8jsypvUzcTVPt++Z/ZUyA+dgkssQ4+5YnS96MXWhKgVc9LCONcC7IVMmFHFx8azV yNo2zjBy1+RUiLaMBQVrQJRWMS7NJR+VmC5c8VzpsTQMHJfCmQmFP2qfhAh9Qv7JIZ/IAs12mVU wJGlYnEmwWkCMjo/oJnMp+WBbULveAqwiNBjFY5icMYNgYtONWTsZNa9TN7gQ+Dxbcyt/g3Nxb3 uWHlOdYm9cvaPUrPIc54wHbMCVeqX9q9T9ery4au0fpCHxVZT6HVEQ/PkfoDKzRFm02+4zDc3sQ zZV+Ou+BR7ovTxA== X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 X-Patchwork-Delegate: kuba@kernel.org Instead of only returning a text message with GENL_SET_ERR_MSG(), NL_SET_ERR_MSG_ATTR() can help the userspace developers by also reporting which attribute is faulty. When the error is specific to an attribute, NL_SET_ERR_MSG_ATTR() is now used. The error messages have not been modified in this commit. Reviewed-by: Geliang Tang Signed-off-by: Matthieu Baerts (NGI0) --- net/mptcp/pm_netlink.c | 20 ++++++++++++-------- net/mptcp/pm_userspace.c | 33 +++++++++++++++++++-------------- 2 files changed, 31 insertions(+), 22 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index ab56630b1d9ce59af4603a5af37153d74c79dbb2..04ab3328c785e804322dbe4fc56da85a58b8e0ea 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1407,18 +1407,21 @@ int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info) return ret; if (addr.addr.port && !address_use_port(&addr)) { - GENL_SET_ERR_MSG(info, "flags must have signal and not subflow when using port"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "flags must have signal and not subflow when using port"); return -EINVAL; } if (addr.flags & MPTCP_PM_ADDR_FLAG_SIGNAL && addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) { - GENL_SET_ERR_MSG(info, "flags mustn't have both signal and fullmesh"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "flags mustn't have both signal and fullmesh"); return -EINVAL; } if (addr.flags & MPTCP_PM_ADDR_FLAG_IMPLICIT) { - GENL_SET_ERR_MSG(info, "can't create IMPLICIT endpoint"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "can't create IMPLICIT endpoint"); return -EINVAL; } @@ -1616,7 +1619,7 @@ int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info) spin_lock_bh(&pernet->lock); entry = __lookup_addr_by_id(pernet, addr.addr.id); if (!entry) { - GENL_SET_ERR_MSG(info, "address not found"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, "address not found"); spin_unlock_bh(&pernet->lock); return -EINVAL; } @@ -1802,7 +1805,7 @@ int mptcp_pm_nl_get_addr(struct sk_buff *skb, struct genl_info *info) rcu_read_lock(); entry = __lookup_addr_by_id(pernet, addr.addr.id); if (!entry) { - GENL_SET_ERR_MSG(info, "address not found"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, "address not found"); ret = -EINVAL; goto unlock_fail; } @@ -2021,7 +2024,8 @@ int mptcp_pm_nl_set_flags(struct sk_buff *skb, struct genl_info *info) if (addr.addr.family == AF_UNSPEC) { lookup_by_id = 1; if (!addr.addr.id) { - GENL_SET_ERR_MSG(info, "missing address ID"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "missing address ID"); return -EOPNOTSUPP; } } @@ -2034,13 +2038,13 @@ int mptcp_pm_nl_set_flags(struct sk_buff *skb, struct genl_info *info) __lookup_addr(pernet, &addr.addr); if (!entry) { spin_unlock_bh(&pernet->lock); - GENL_SET_ERR_MSG(info, "address not found"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, "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"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, "invalid addr flags"); return -EINVAL; } diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 525dcb84353f946a24923a1345a6e4b20a60663b..8dddb16247363a11ba11bcb94c4557dd0cfd8745 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -189,7 +189,8 @@ static struct mptcp_sock *mptcp_userspace_pm_get_sock(const struct genl_info *in } if (!mptcp_pm_is_userspace(msk)) { - GENL_SET_ERR_MSG(info, "userspace PM not selected"); + NL_SET_ERR_MSG_ATTR(info->extack, token, + "userspace PM not selected"); sock_put((struct sock *)msk); return NULL; } @@ -220,20 +221,21 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info) goto announce_err; if (addr_val.addr.id == 0) { - GENL_SET_ERR_MSG(info, "invalid addr id"); + NL_SET_ERR_MSG_ATTR(info->extack, addr, "invalid addr id"); err = -EINVAL; goto announce_err; } if (!(addr_val.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { - GENL_SET_ERR_MSG(info, "invalid addr flags"); + NL_SET_ERR_MSG_ATTR(info->extack, addr, "invalid addr flags"); err = -EINVAL; goto announce_err; } err = mptcp_userspace_pm_append_new_local_addr(msk, &addr_val, false); if (err < 0) { - GENL_SET_ERR_MSG(info, "did not match address and id"); + NL_SET_ERR_MSG_ATTR(info->extack, addr, + "did not match address and id"); goto announce_err; } @@ -354,9 +356,9 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info) err = 0; out: if (err) - GENL_SET_ERR_MSG_FMT(info, - "address with id %u not found", - id_val); + NL_SET_ERR_MSG_ATTR_FMT(info->extack, id, + "address with id %u not found", + id_val); sock_put(sk); return err; @@ -388,7 +390,7 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info) goto create_err; if (entry.flags & MPTCP_PM_ADDR_FLAG_SIGNAL) { - GENL_SET_ERR_MSG(info, "invalid addr flags"); + NL_SET_ERR_MSG_ATTR(info->extack, laddr, "invalid addr flags"); err = -EINVAL; goto create_err; } @@ -407,7 +409,8 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info) err = mptcp_userspace_pm_append_new_local_addr(msk, &entry, false); if (err < 0) { - GENL_SET_ERR_MSG(info, "did not match address and id"); + NL_SET_ERR_MSG_ATTR(info->extack, laddr, + "did not match address and id"); goto create_err; } @@ -528,13 +531,13 @@ int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info } if (!addr_l.addr.port) { - GENL_SET_ERR_MSG(info, "missing local port"); + NL_SET_ERR_MSG_ATTR(info->extack, laddr, "missing local port"); err = -EINVAL; goto destroy_err; } if (!addr_r.port) { - GENL_SET_ERR_MSG(info, "missing remote port"); + NL_SET_ERR_MSG_ATTR(info->extack, raddr, "missing remote port"); err = -EINVAL; goto destroy_err; } @@ -588,7 +591,8 @@ int mptcp_userspace_pm_set_flags(struct sk_buff *skb, struct genl_info *info) goto set_flags_err; if (loc.addr.family == AF_UNSPEC) { - GENL_SET_ERR_MSG(info, "invalid local address family"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, + "invalid local address family"); ret = -EINVAL; goto set_flags_err; } @@ -599,7 +603,8 @@ int mptcp_userspace_pm_set_flags(struct sk_buff *skb, struct genl_info *info) goto set_flags_err; if (rem.addr.family == AF_UNSPEC) { - GENL_SET_ERR_MSG(info, "invalid remote address family"); + NL_SET_ERR_MSG_ATTR(info->extack, attr_rem, + "invalid remote address family"); ret = -EINVAL; goto set_flags_err; } @@ -722,7 +727,7 @@ int mptcp_userspace_pm_get_addr(struct sk_buff *skb, spin_lock_bh(&msk->pm.lock); entry = mptcp_userspace_pm_lookup_addr_by_id(msk, addr.addr.id); if (!entry) { - GENL_SET_ERR_MSG(info, "address not found"); + NL_SET_ERR_MSG_ATTR(info->extack, attr, "address not found"); ret = -EINVAL; goto unlock_fail; }