From nobody Mon Sep 16 19:15:12 2024 Received: from out-187.mta0.migadu.com (out-187.mta0.migadu.com [91.218.175.187]) (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 CDF05487AE for ; Wed, 10 Jan 2024 13:19:53 +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="vgP21uXn" 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=1704892792; 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=3yvhFuc1haFxUPKY/eYoU44Js8yEPlOioWi6lmJYFtI=; b=vgP21uXnhIdqOj3ApD2i2F7k5j7Y8cFh6xgDbtavZbI/Wsq6HhEw5JFC40r4woOXM5Kzvs TObDL0qexQVPm0QYZ36Vk/chVt9T9CO0OdmnBiLgmXbSyHp8uuZvuYK8kRo4AUJXIQQaWO AYh6XMjkrisFpbfrqIHAeeSguRWEFXQ= From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v8 07/23] mptcp: implement mptcp_userspace_pm_dump_addr Date: Wed, 10 Jan 2024 21:19:15 +0800 Message-Id: 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" This patch implements mptcp_userspace_pm_dump_addr() to dump addresses from userspace pm address list. Use mptcp_token_get_sock() to get the msk from the given token, if userspace PM is enabled in it, traverse each address entry in address list, put every entry to userspace using mptcp_pm_nl_put_entry_msg(). Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 57 ++++++++++++++++++++++++++++++++++++++++ net/mptcp/protocol.h | 2 ++ 2 files changed, 59 insertions(+) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index dfceee59078f..a7e3c0fcbbaa 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -574,3 +574,60 @@ int mptcp_userspace_pm_set_flags(struct net *net, stru= ct nlattr *token, sock_put(sk); return ret; } + +int mptcp_userspace_pm_dump_addr(struct sk_buff *msg, + struct netlink_callback *cb) +{ + struct id_bitmap { + DECLARE_BITMAP(map, MPTCP_PM_MAX_ADDR_ID + 1); + } *bitmap; + const struct genl_info *info =3D genl_info_dump(cb); + struct net *net =3D sock_net(msg->sk); + struct mptcp_pm_addr_entry *entry; + struct mptcp_sock *msk; + struct nlattr *token; + int ret =3D -EINVAL; + struct sock *sk; + void *hdr; + + bitmap =3D (struct id_bitmap *)cb->ctx; + token =3D info->attrs[MPTCP_PM_ATTR_TOKEN]; + + msk =3D mptcp_token_get_sock(net, nla_get_u32(token)); + if (!msk) { + NL_SET_ERR_MSG_ATTR(info->extack, token, "invalid token"); + return ret; + } + + if (!mptcp_pm_is_userspace(msk)) { + GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected"); + return ret; + } + + sk =3D (struct sock *)msk; + + lock_sock(sk); + spin_lock_bh(&msk->pm.lock); + list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) { + if (test_bit(entry->addr.id, bitmap->map)) + continue; + + hdr =3D genlmsg_put(msg, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, &mptcp_genl_family, + NLM_F_MULTI, MPTCP_PM_CMD_GET_ADDR); + if (!hdr) + break; + + if (mptcp_nl_fill_addr(msg, entry) < 0) { + genlmsg_cancel(msg, hdr); + break; + } + + __set_bit(entry->addr.id, bitmap->map); + genlmsg_end(msg, hdr); + } + spin_unlock_bh(&msk->pm.lock); + release_sock(sk); + + return msg->len; +} diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index ea21fcf6436e..b5386dd1de3a 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1031,6 +1031,8 @@ bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, = unsigned int remaining, int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc); int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_inf= o *skc); int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_a= ddr_info *skc); +int mptcp_userspace_pm_dump_addr(struct sk_buff *msg, + struct netlink_callback *cb); =20 void __init mptcp_pm_nl_init(void); void mptcp_pm_nl_work(struct mptcp_sock *msk); --=20 2.40.1