From patchwork Thu Oct 10 05:47:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13829500 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 C5BB2178372 for ; Thu, 10 Oct 2024 05:48:32 +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=1728539312; cv=none; b=JG+OSiD6x5KXtu8IAhejdq2bTKci/HDnjFvDBmRkWX/4Y9lfvbvsXjIxB5avNDUooG+hqh65hiXk7tPz18bWTaJsDq8EXR6l3dYDI7h0hnGOlvHNFvYeNhZFSHDIA4vR7akWXxhXGrMUrBySKlcq6YI60x7NfNU21rvfCVdCeFQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728539312; c=relaxed/simple; bh=BeacQk9SNJKDALTc97IELSpe5HWfKDrbBtJDX/4EDjk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hYeNyE0sU3KJVT2jCPy9vvwj2wfsjZvBnOs9lEr29Tkd2ah9ohFk/C3yN4sQ72Tdsc0r+tedyH8A083MGUn/VyGbd+TJQvzUIR/fXIUgHdSfAm2Ng4dsxAca7q78rrtx9Ygzz9ZHOSvsfUzf0P7nS7E0WKsQPDFRRROjfMp9b38= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RGD2/5hx; 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="RGD2/5hx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BAA4C4CEC5; Thu, 10 Oct 2024 05:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728539312; bh=BeacQk9SNJKDALTc97IELSpe5HWfKDrbBtJDX/4EDjk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RGD2/5hxKvlywJCwC6CTma0kaO+XZU0lh2lwA8Mps5wHOan67XMPuTvil5nVLWu85 yfamLS+zJPRp3ZH/UjvOYK81l9IHcjmieQdl91cinKJOtprwZuaTnijByY0yz6sKAB ZfZTfdOZvrb7B4XJ+WvztgxktnHIfVzocJ5qrbUymuZRUbe41OIC+lOrzuTVPKpwkb cF5QveZ0GZwHSYmvkOZ7MVXvbOITSSlXd5Eee9JhS8HrwOljUctEFqTy3ZDs0/obQI ZKa60A1DexKF7b4FIZPaGarToB+CdlFsUsJtmjNubZ88M37fIM1MCXxq+MCQ9ocByu heYcweWwkNwIw== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v3 14/15] mptcp: drop struct mptcp_pm_local Date: Thu, 10 Oct 2024 13:47:59 +0800 Message-ID: <13e159c0bc49c99a692c71d3ed83634119b8a3bf.1728538976.git.tanggeliang@kylinos.cn> X-Mailer: git-send-email 2.43.0 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 47dda03e4ee2..03f3b02d4542 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 4b2c3d0f685e..fc2f2bf6a69d 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -338,7 +338,6 @@ 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; @@ -385,12 +384,8 @@ 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 168f144b86a4..c4842fe5d3ff 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; @@ -738,7 +732,7 @@ 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 860903e06422..b54324d106f1 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -1582,7 +1582,7 @@ 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);