From patchwork Wed Oct 16 09:12:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13837986 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 82761204F6F for ; Wed, 16 Oct 2024 09:13:23 +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=1729070003; cv=none; b=i4Vf2WAs+OpA01iKZ3TGHRkZ48FIlp5DWLqOuGP1JR9Wt6LB1Po9SeatEkwpuxjYZiZ12yvRQZ2cEWaqA1cVCJxSHdsuKDT3DSpFxS3/06ePpM4Cp/wLDsYUe7kU6UQ1QhULydmlLRb/T+7fg80X/nEERahcCoMi3jU6CBrtRhw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729070003; c=relaxed/simple; bh=rdK9WGm18K95FHxDaEhCCUPoQa+WcA/UQjfXIuHF8Do=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=keAeeQmUsaSGfUn+O7yCbnW/wQVrPJ50hDTfHF8Iq2ceKHnMaYrwa7yAewetPVg1aW/l3Y414C/qe7PiTRv4b4iIYaOF1uj1zUMZ7n1HhACQwaCAL2D9vAP9/1q6kSJdKl+hIHIHBhDUlBXKmDdPJMg5L2vN1cUDRSa081w8uaM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fmEE5rlF; 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="fmEE5rlF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A8FDC4CEC5; Wed, 16 Oct 2024 09:13:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729070003; bh=rdK9WGm18K95FHxDaEhCCUPoQa+WcA/UQjfXIuHF8Do=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fmEE5rlFcFXDzu352sCJDP9w8qIEsuY931KWDBBRHaqv9rZNkawvEzhvTLGuAmDYT vW0SMLNx4OQeEnfF1hvxbcWdyX9kRTktv2YWjor2pw7kAnLUlDGQ6pKUTWsQPzLa+q pH1jWfILUxPgouuikdFObDnMgurNIhi+Py3ZJ1qGAYRbVtLBzldU/rh2AvQ7bU18Jw 7k3wCC0D8qkEzivaMiDpsG2yIGz5OzoMvwkj8XU8oYDXobHinuW5oifzqKVEDlsr5Q JPBH3Y/hMze0pNMRx6Mg2j6Y16D4rEsXo+C7BFo6Bc49hIezCkJt6CyT18anwLeBah RN0NTARbbvFQg== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next 21/33] mptcp: update address type of get_local_id Date: Wed, 16 Oct 2024 17:12:25 +0800 Message-ID: <291a467908a1aff6ccae62f4939947017af11e94.1729069854.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_userspace_pm_get_local_id() that assigns "skc" to "new_entry" is not allowed in BPF if we use the same code to implement the get_local_id() interface of a BFP path manager: memset(&new_entry, 0, sizeof(struct mptcp_pm_addr_entry)); new_entry.addr = *skc; new_entry.addr.id = 0; new_entry.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT; To solve the issue, this patch moves this assignment to "new_entry" forward to mptcp_pm_get_local_id(), and then passing "new_entry" as a parameter to both mptcp_pm_nl_get_local_id() and mptcp_userspace_pm_get_local_id(). Signed-off-by: Geliang Tang --- net/mptcp/pm.c | 10 ++++++++-- net/mptcp/pm_netlink.c | 11 +++-------- net/mptcp/pm_userspace.c | 17 ++++++----------- net/mptcp/protocol.h | 4 ++-- 4 files changed, 19 insertions(+), 23 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index b6e6859903ef..d28e844eba2d 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -404,6 +404,7 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc) { struct mptcp_addr_info skc_local; struct mptcp_addr_info msk_local; + struct mptcp_pm_addr_entry local; if (WARN_ON_ONCE(!msk)) return -1; @@ -416,9 +417,14 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc) if (mptcp_addresses_equal(&msk_local, &skc_local, false)) return 0; + memset(&local, 0, sizeof(struct mptcp_pm_addr_entry)); + local.addr = skc_local; + local.addr.id = 0; + local.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT; + if (mptcp_pm_is_userspace(msk)) - return mptcp_userspace_pm_get_local_id(msk, &skc_local); - return mptcp_pm_nl_get_local_id(msk, &skc_local); + return mptcp_userspace_pm_get_local_id(msk, &local); + return mptcp_pm_nl_get_local_id(msk, &local); } bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index a0d9e3e7b0f2..8ef7faaf9c4a 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1137,7 +1137,7 @@ static int mptcp_pm_nl_create_listen_socket(struct sock *sk, return err; } -int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc) +int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *local) { struct mptcp_pm_addr_entry *entry; struct pm_nl_pernet *pernet; @@ -1146,7 +1146,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc pernet = pm_nl_get_pernet_from_msk(msk); rcu_read_lock(); - entry = __lookup_addr(pernet, skc); + entry = __lookup_addr(pernet, &local->addr); if (entry) ret = entry->addr.id; rcu_read_unlock(); @@ -1158,12 +1158,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc if (!entry) return -ENOMEM; - entry->addr = *skc; - entry->addr.id = 0; - entry->addr.port = 0; - entry->ifindex = 0; - entry->flags = MPTCP_PM_ADDR_FLAG_IMPLICIT; - entry->lsk = NULL; + *entry = *local; ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, true); if (ret < 0) kfree(entry); diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index aa4a5d110376..c749f5dccdf9 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -131,27 +131,22 @@ mptcp_userspace_pm_lookup_addr_by_id(struct mptcp_sock *msk, unsigned int id) } int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, - struct mptcp_addr_info *skc) + struct mptcp_pm_addr_entry *local) { - struct mptcp_pm_addr_entry *entry = NULL, new_entry; + struct mptcp_pm_addr_entry *entry = NULL; __be16 msk_sport = ((struct inet_sock *) inet_sk((struct sock *)msk))->inet_sport; spin_lock_bh(&msk->pm.lock); - entry = mptcp_userspace_pm_lookup_addr(msk, skc); + entry = mptcp_userspace_pm_lookup_addr(msk, &local->addr); spin_unlock_bh(&msk->pm.lock); if (entry) return entry->addr.id; - memset(&new_entry, 0, sizeof(struct mptcp_pm_addr_entry)); - new_entry.addr = *skc; - new_entry.addr.id = 0; - new_entry.flags = MPTCP_PM_ADDR_FLAG_IMPLICIT; - - if (new_entry.addr.port == msk_sport) - new_entry.addr.port = 0; + if (local->addr.port == msk_sport) + local->addr.port = 0; - return mptcp_userspace_pm_append_new_local_addr(msk, &new_entry, true); + return mptcp_userspace_pm_append_new_local_addr(msk, local, true); } bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 07e7baec7cbe..0ae9eef173ea 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1125,8 +1125,8 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, const struct sk_buff *skb, bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining, struct mptcp_rm_list *rm_list); 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_info *skc); -int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc); +int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *local); +int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *local); bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc); bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc); bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);