From patchwork Tue Oct 22 09:14:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13845396 X-Patchwork-Delegate: matthieu.baerts@tessares.net 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 680E2146A97 for ; Tue, 22 Oct 2024 09:15:30 +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=1729588530; cv=none; b=H+Q1u02LhiVzDtX1ohXaar5vFaGLaNcJOMSznMoLA2Kjc1odotufv4DwClBlje/YYJoGYmYwYuT7qOA5J+k+wiSDFyXgKUEscUnDUGX4Ah/JpihgHLppzW0uj93n40RLUBnA1kaS8UkPfDYFXNjJ/QDLWfsbgzQJ2EklnQw6TLY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729588530; c=relaxed/simple; bh=+se2yjMZElm6/cKgWkYEhm1WNMX1UTLTP6vioF+Bayw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CCGtEbpOWfetK/1ZS2GpXxtofBUmRjrxTK1rXeOyHTfa/hxwMudz5HjFB1n/J0UdpxyjqTT6ljXccMXkQ66Tnuo1dyNvy3KX0UGOoRbL/4WmY3hQCleU7AseHNx/WGVmO0+YX9m1Gnu4elsNi3DL/6lOlYKvAkINTP6rSiOe7Qw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mgHzL/fV; 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="mgHzL/fV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66221C4CEC3; Tue, 22 Oct 2024 09:15:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729588530; bh=+se2yjMZElm6/cKgWkYEhm1WNMX1UTLTP6vioF+Bayw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mgHzL/fV1Etva4rJHpz6fKl+R6qjwVuIqsTjCwY7fAbFB477/5paoIUWBP0MScSZV 7KuyIW80nMPXKiMGnFJ2lXYZAtEVmTrckqdybZkHUlORv6Vs12fSpJf763OrcTjLRC UrOw5a5v6ZmxFuyrGmfParHcqtTkWuvsbx0YRdi8nV2zqBg2e3ApXBoSJcqrCuFeej suQfwkFU15ZX/RM7wKuHNTmY4blxec0Fo0CXKMm0+TZk8TVHv2j5NTjklzx2ITEMI+ YxHvhEcSvUQaPKkiE3+BLHyhDcRN8gDmYx0AAuwLSOdY2zX/D3y3VCHsxe0323Wc+x C3ySHyWJT95AQ== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v2 23/36] mptcp: drop struct mptcp_pm_local Date: Tue, 22 Oct 2024 17:14:31 +0800 Message-ID: <5b8a8e318c9d661f495b6d0be2b7a776de7da7a1.1729588019.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Geliang Tang The following code in mptcp_pm_nl_subflow_create_doit() that assigns struct mptcp_pm_addr_entry "entry" to the local struct mptcp_pm_local variable "local" is not allowed in BPF if we use the same code to implement the subflow_create() interface of a BFP path manager: struct mptcp_pm_local local; local.addr = entry.addr; local.flags = entry.flags; local.ifindex = entry.ifindex; We should avoid this type of assignment from struct mptcp_pm_addr_entry to struct mptcp_pm_local. In fact, there is no need to add a dedicated address entry type for local address entry. All its fields are the same as struct mptcp_pm_addr_entry, except that it lacks a "lsk" for the listening socket. So we can use struct mptcp_pm_addr_entry directly. This makes the path manager code simpler. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 22 ++++++++-------------- net/mptcp/pm_userspace.c | 7 +------ net/mptcp/protocol.h | 8 +------- net/mptcp/subflow.c | 2 +- 4 files changed, 11 insertions(+), 28 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 287e715bcf68..15f97e7af182 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -149,7 +149,7 @@ static bool lookup_subflow_by_daddr(const struct list_head *list, static bool select_local_address(const struct pm_nl_pernet *pernet, const struct mptcp_sock *msk, - struct mptcp_pm_local *new_local) + struct mptcp_pm_addr_entry *new_local) { struct mptcp_pm_addr_entry *entry; bool found = false; @@ -164,9 +164,7 @@ select_local_address(const struct pm_nl_pernet *pernet, if (!test_bit(entry->addr.id, msk->pm.id_avail_bitmap.map)) continue; - new_local->addr = entry->addr; - new_local->flags = entry->flags; - new_local->ifindex = entry->ifindex; + *new_local = *entry; found = true; break; } @@ -177,7 +175,7 @@ select_local_address(const struct pm_nl_pernet *pernet, static bool select_signal_address(struct pm_nl_pernet *pernet, const struct mptcp_sock *msk, - struct mptcp_pm_local *new_local) + struct mptcp_pm_addr_entry *new_local) { struct mptcp_pm_addr_entry *entry; bool found = false; @@ -195,9 +193,7 @@ select_signal_address(struct pm_nl_pernet *pernet, const struct mptcp_sock *msk, if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) continue; - new_local->addr = entry->addr; - new_local->flags = entry->flags; - new_local->ifindex = entry->ifindex; + *new_local = *entry; found = true; break; } @@ -534,11 +530,11 @@ __lookup_addr(struct pm_nl_pernet *pernet, const struct mptcp_addr_info *info) static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) { struct sock *sk = (struct sock *)msk; + struct mptcp_pm_addr_entry local; unsigned int add_addr_signal_max; bool signal_and_subflow = false; unsigned int local_addr_max; struct pm_nl_pernet *pernet; - struct mptcp_pm_local local; unsigned int subflows_max; pernet = pm_nl_get_pernet(sock_net(sk)); @@ -660,7 +656,7 @@ static void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk) */ static unsigned int fill_local_addresses_vec(struct mptcp_sock *msk, struct mptcp_addr_info *remote, - struct mptcp_pm_local *locals) + struct mptcp_pm_addr_entry *locals) { struct sock *sk = (struct sock *)msk; struct mptcp_pm_addr_entry *entry; @@ -683,9 +679,7 @@ static unsigned int fill_local_addresses_vec(struct mptcp_sock *msk, continue; if (msk->pm.subflows < subflows_max) { - locals[i].addr = entry->addr; - locals[i].flags = entry->flags; - locals[i].ifindex = entry->ifindex; + locals[i] = *entry; /* Special case for ID0: set the correct ID */ if (mptcp_addresses_equal(&locals[i].addr, &mpc_addr, locals[i].addr.port)) @@ -721,7 +715,7 @@ static unsigned int fill_local_addresses_vec(struct mptcp_sock *msk, static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) { - struct mptcp_pm_local locals[MPTCP_PM_ADDR_MAX]; + struct mptcp_pm_addr_entry locals[MPTCP_PM_ADDR_MAX]; struct sock *sk = (struct sock *)msk; unsigned int add_addr_accept_max; struct mptcp_addr_info remote; diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 0012b1965421..c1bc668cce1e 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -339,7 +339,6 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info) struct nlattr *laddr = info->attrs[MPTCP_PM_ATTR_ADDR]; struct mptcp_pm_addr_entry entry = { 0 }; struct mptcp_addr_info addr_r; - struct mptcp_pm_local local; struct mptcp_sock *msk; int err = -EINVAL; struct sock *sk; @@ -386,12 +385,8 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info) goto create_err; } - local.addr = entry.addr; - local.flags = entry.flags; - local.ifindex = entry.ifindex; - lock_sock(sk); - err = __mptcp_subflow_connect(sk, &local, &addr_r); + err = __mptcp_subflow_connect(sk, &entry, &addr_r); release_sock(sk); spin_lock_bh(&msk->pm.lock); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 8efd288bd247..d9badf270b15 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -240,12 +240,6 @@ struct mptcp_pm_data { struct mptcp_rm_list rm_list_rx; }; -struct mptcp_pm_local { - struct mptcp_addr_info addr; - u8 flags; - int ifindex; -}; - struct mptcp_pm_addr_entry { struct list_head list; struct mptcp_addr_info addr; @@ -745,7 +739,7 @@ bool mptcp_addresses_equal(const struct mptcp_addr_info *a, void mptcp_local_address(const struct sock_common *skc, struct mptcp_addr_info *addr); /* called with sk socket lock held */ -int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_local *local, +int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_addr_entry *local, const struct mptcp_addr_info *remote); int mptcp_subflow_create_socket(struct sock *sk, unsigned short family, struct socket **new_sock); diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 07352b15f145..2ae8f467abc1 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -1586,7 +1586,7 @@ void mptcp_info2sockaddr(const struct mptcp_addr_info *info, #endif } -int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_local *local, +int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_addr_entry *local, const struct mptcp_addr_info *remote) { struct mptcp_sock *msk = mptcp_sk(sk);