From patchwork Sun Feb 23 14:19:51 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13987048 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 8CD2320011D for ; Sun, 23 Feb 2025 14:20:53 +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=1740320453; cv=none; b=FP/1YybcY9oPigQx5C+S4TXQpV/ciYHNlux2/HvpbD5l7Q0oKRmgeuz9J0QMtzuyhnMReH1sBiyqhv/aXsVWXJLyJlk3+dXiXFfUwdwhZNNsufnBSYvqiY16ymz5hl7URoRlDQUFxr1xxT4fhrFD3RrwRmWCBbY92vZ1oNP76LM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740320453; c=relaxed/simple; bh=rJNbYgViLMPII9wpo4/Db54VHTnqpsYpeOxy1MCo//A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SLqBAD3k7gOSAuR4j2hu+TEA5DJcE8UIs5L1Wupe1P3YxBKGzkmtZmTHaQByNrGPRQsP1Aq0OpztU7PG8Bb+90cv8mzut8fi7bZiitziRkTEmo2rFfvY2VKs9IHb12io2UmEBeWIJ30l4549E4/A2ltPxr9P3Pf4zMJ2FtehX0g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RuR5TiyK; 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="RuR5TiyK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FFB6C4CEE7; Sun, 23 Feb 2025 14:20:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740320453; bh=rJNbYgViLMPII9wpo4/Db54VHTnqpsYpeOxy1MCo//A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RuR5TiyKTop1rrse/80tZ/z87/+cxXHu3oEYijSR0Rcy4wP8munD04t3Y2u4Le7OH d0JJE6tnrxGv3gS7ekX+R2NXQ6R6Il27FRt8UNENyWg0ddZivNYTKyihhkkKVY7zXU e5sqyW6mBJ0/L0O4z4zaYOEr0efbgXrTncEUgMgee5kOAygkyj8+qeK1u2eW2jfq+e PQAnZyYZ3X++23/4CH2SooWDMxQLM/IuX6Y8D7IjGhPlpnhiO3F/d8hRbhhi4fkA4d /qLeiH8cR51xkYHD42aMzwSWm5vufkkCUkMi51AFfL7zwV8Kg1v7d/Kqtz2JfOTWL7 cP+Z0CmcUTjOg== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v6 03/13] mptcp: pm: use addr entry for get_local_id Date: Sun, 23 Feb 2025 22:19:51 +0800 Message-ID: <889e6bbf8352886fadca89ea653a3e735a7ae106.1740320007.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 | 9 ++++++--- net/mptcp/pm_netlink.c | 11 ++++------- net/mptcp/pm_userspace.c | 17 ++++++----------- net/mptcp/protocol.h | 6 ++++-- 4 files changed, 20 insertions(+), 23 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 16cacce6c10f..ac7b39148bd3 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -403,7 +403,7 @@ 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) { - struct mptcp_addr_info skc_local; + struct mptcp_pm_addr_entry skc_local = { 0 }; struct mptcp_addr_info msk_local; if (WARN_ON_ONCE(!msk)) @@ -413,10 +413,13 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc) * addr */ mptcp_local_address((struct sock_common *)msk, &msk_local); - mptcp_local_address((struct sock_common *)skc, &skc_local); - if (mptcp_addresses_equal(&msk_local, &skc_local, false)) + mptcp_local_address((struct sock_common *)skc, &skc_local.addr); + if (mptcp_addresses_equal(&msk_local, &skc_local.addr, false)) return 0; + skc_local.addr.id = 0; + skc_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); diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index d4328443d844..69a2f7aa1825 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1139,7 +1139,8 @@ 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 *skc) { struct mptcp_pm_addr_entry *entry; struct pm_nl_pernet *pernet; @@ -1148,7 +1149,7 @@ 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, &skc->addr); ret = entry ? entry->addr.id : -1; rcu_read_unlock(); if (ret >= 0) @@ -1159,12 +1160,8 @@ 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 = *skc; entry->addr.port = 0; - entry->ifindex = 0; - entry->flags = MPTCP_PM_ADDR_FLAG_IMPLICIT; - entry->lsk = NULL; 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 6bf6a20ef7f3..5b3ee43130be 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 *skc) { - struct mptcp_pm_addr_entry *entry = NULL, new_entry; __be16 msk_sport = ((struct inet_sock *) inet_sk((struct sock *)msk))->inet_sport; + struct mptcp_pm_addr_entry *entry; spin_lock_bh(&msk->pm.lock); - entry = mptcp_userspace_pm_lookup_addr(msk, skc); + entry = mptcp_userspace_pm_lookup_addr(msk, &skc->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 (skc->addr.port == msk_sport) + skc->addr.port = 0; - return mptcp_userspace_pm_append_new_local_addr(msk, &new_entry, true); + return mptcp_userspace_pm_append_new_local_addr(msk, skc, true); } bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index ae4544663f06..a6815d02706b 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1127,8 +1127,10 @@ 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 *skc); +int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, + struct mptcp_pm_addr_entry *skc); 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);