From patchwork Tue Oct 22 09:14:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13845393 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 45B7D2209B for ; Tue, 22 Oct 2024 09:15:24 +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=1729588525; cv=none; b=mPikUjIoZ1G81X0dM/GeZuQD0hABdFaNMkNIoPGCvTiSr+8CJvDBW1GIe9Iu+6J6gpL+cU+SVmqp5ku2EXa2YLZmYWghsOC4rJpYWTK8RkTgPy2XA9+FGlQcBWAl3zvq7gZYZ0eBjiBA0M/An7wKFVbpKqz+pMIHg+9pwoK1P0M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729588525; c=relaxed/simple; bh=5cSzJZfBDyO5D5zfOwKKSw9vHm4wzqLeBCTd+VOfl4I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=txqEPjoMyqbRjBSDKJep8PXMmMsdJPuEnkXqwTtVeKmnbrhK8P+oqHKWXkVSIjrHHOzrss8PbztS8eLGk3uqS4PRFUtpiORk/Pdw9pV259VEEmfOe7LJ4ya+6dILns6ZhohlaE8JX8i0SsQJ/Se6T/0fBh+ZHY5iwizqEGSlhjk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cViMgTF/; 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="cViMgTF/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F206DC4CEE7; Tue, 22 Oct 2024 09:15:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729588524; bh=5cSzJZfBDyO5D5zfOwKKSw9vHm4wzqLeBCTd+VOfl4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cViMgTF/PPM/KAo9kYrznmzGR+idkJgOuWTz6dGUYJj2vU6dYActeTg+PHqAJzdmp 1Q4Ank1rkfho7cQwll/0uKM5XhrCAVEMzrQk9i2UqDPVbhVIrHvr25H1Lq46dlhsm8 ehuUB4zWB4zPf9460IQ+NN/0Ir0JsOhqcvZ2zyWKCtm5FqmIlcdpAhwvyX97oIKYbX YYlXvAEZGIZPTDAZ72gT56nXq5uIhkRo5i55SSn+k0/rkIOLHztBfsu/ufr77sSj3P ENosnjZXSvk7VMdWUP3Dp4bgpuY8nhYWs8vsRNHodQginWQlp2Ov5P886O4E0Dw4/x uj8jeUczvQCpA== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v2 20/36] mptcp: add loc and rem for set_flags Date: Tue, 22 Oct 2024 17:14:28 +0800 Message-ID: <0941887ad2ba9451d89c0409b40b945d57a4c56c.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 This patch updates the interfaces set_flags to reduce repetitive code, adds two more parameters "loc" and "rem" for them. These addresses are parsed in public helper mptcp_pm_nl_set_flags_doit(), then pass them to mptcp_pm_nl_set_flags() and mptcp_userspace_pm_set_flags(). Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 57 ++++++++++++++++++++++++---------------- net/mptcp/pm_userspace.c | 28 ++++++-------------- net/mptcp/protocol.h | 4 ++- 3 files changed, 46 insertions(+), 43 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 5fb1d5d8bf57..5cd5241da3c6 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -2045,10 +2045,10 @@ static int mptcp_nl_set_flags(struct net *net, return ret; } -static int mptcp_pm_nl_set_flags(struct genl_info *info) +static int mptcp_pm_nl_set_flags(struct mptcp_pm_addr_entry *loc, + struct mptcp_addr_info *rem, + struct genl_info *info) { - struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }; - struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR]; u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP | MPTCP_PM_ADDR_FLAG_FULLMESH; struct net *net = genl_info_net(info); @@ -2056,59 +2056,72 @@ static int mptcp_pm_nl_set_flags(struct genl_info *info) struct pm_nl_pernet *pernet; u8 lookup_by_id = 0; u8 bkup = 0; - int ret; pernet = pm_nl_get_pernet(net); - ret = mptcp_pm_parse_entry(attr, info, false, &addr); - if (ret < 0) - return ret; - - if (addr.addr.family == AF_UNSPEC) { + if (loc->addr.family == AF_UNSPEC) { lookup_by_id = 1; - if (!addr.addr.id) { + if (!loc->addr.id) { GENL_SET_ERR_MSG(info, "missing required inputs"); return -EOPNOTSUPP; } } - if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP) + if (loc->flags & MPTCP_PM_ADDR_FLAG_BACKUP) bkup = 1; spin_lock_bh(&pernet->lock); - entry = lookup_by_id ? __lookup_addr_by_id(pernet, addr.addr.id) : - __lookup_addr(pernet, &addr.addr); + entry = lookup_by_id ? __lookup_addr_by_id(pernet, loc->addr.id) : + __lookup_addr(pernet, &loc->addr); if (!entry) { spin_unlock_bh(&pernet->lock); GENL_SET_ERR_MSG(info, "address not found"); return -EINVAL; } - if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && + if ((loc->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { spin_unlock_bh(&pernet->lock); GENL_SET_ERR_MSG(info, "invalid addr flags"); return -EINVAL; } - changed = (addr.flags ^ entry->flags) & mask; - entry->flags = (entry->flags & ~mask) | (addr.flags & mask); - addr = *entry; + changed = (loc->flags ^ entry->flags) & mask; + entry->flags = (entry->flags & ~mask) | (loc->flags & mask); + *loc = *entry; spin_unlock_bh(&pernet->lock); - mptcp_nl_set_flags(net, &addr.addr, bkup, changed); + mptcp_nl_set_flags(net, &loc->addr, bkup, changed); return 0; } -static int mptcp_pm_set_flags(struct genl_info *info) +static int mptcp_pm_set_flags(struct mptcp_pm_addr_entry *loc, + struct mptcp_addr_info *rem, + struct genl_info *info) { if (info->attrs[MPTCP_PM_ATTR_TOKEN]) - return mptcp_userspace_pm_set_flags(info); - return mptcp_pm_nl_set_flags(info); + return mptcp_userspace_pm_set_flags(loc, rem, info); + return mptcp_pm_nl_set_flags(loc, rem, info); } int mptcp_pm_nl_set_flags_doit(struct sk_buff *skb, struct genl_info *info) { - return mptcp_pm_set_flags(info); + struct mptcp_pm_addr_entry loc = { .addr = { .family = AF_UNSPEC }, }; + struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE]; + struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR]; + struct mptcp_addr_info rem = { .family = AF_UNSPEC, }; + int ret; + + ret = mptcp_pm_parse_entry(attr, info, false, &loc); + if (ret < 0) + return ret; + + if (attr_rem) { + ret = mptcp_pm_parse_addr(attr_rem, info, &rem); + if (ret < 0) + return ret; + } + + return mptcp_pm_set_flags(&loc, &rem, info); } static void mptcp_nl_mcast_send(struct net *net, struct sk_buff *nlskb, gfp_t gfp) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 4db39bf26cf4..aa4a5d110376 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -537,12 +537,10 @@ int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info return err; } -int mptcp_userspace_pm_set_flags(struct genl_info *info) +int mptcp_userspace_pm_set_flags(struct mptcp_pm_addr_entry *loc, + struct mptcp_addr_info *rem, + struct genl_info *info) { - struct mptcp_pm_addr_entry loc = { .addr = { .family = AF_UNSPEC }, }; - struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE]; - struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR]; - struct mptcp_addr_info rem = { .family = AF_UNSPEC, }; struct mptcp_pm_addr_entry *entry; struct mptcp_sock *msk; int ret = -EINVAL; @@ -555,28 +553,18 @@ int mptcp_userspace_pm_set_flags(struct genl_info *info) sk = (struct sock *)msk; - ret = mptcp_pm_parse_entry(attr, info, false, &loc); - if (ret < 0) - goto set_flags_err; - - if (attr_rem) { - ret = mptcp_pm_parse_addr(attr_rem, info, &rem); - if (ret < 0) - goto set_flags_err; - } - - if (loc.addr.family == AF_UNSPEC || - rem.family == AF_UNSPEC) { + if (loc->addr.family == AF_UNSPEC || + rem->family == AF_UNSPEC) { GENL_SET_ERR_MSG(info, "invalid address families"); ret = -EINVAL; goto set_flags_err; } - if (loc.flags & MPTCP_PM_ADDR_FLAG_BACKUP) + if (loc->flags & MPTCP_PM_ADDR_FLAG_BACKUP) bkup = 1; spin_lock_bh(&msk->pm.lock); - entry = mptcp_userspace_pm_lookup_addr(msk, &loc.addr); + entry = mptcp_userspace_pm_lookup_addr(msk, &loc->addr); if (entry) { if (bkup) entry->flags |= MPTCP_PM_ADDR_FLAG_BACKUP; @@ -586,7 +574,7 @@ int mptcp_userspace_pm_set_flags(struct genl_info *info) spin_unlock_bh(&msk->pm.lock); lock_sock(sk); - ret = mptcp_pm_nl_mp_prio_send_ack(msk, &loc.addr, &rem, bkup); + ret = mptcp_pm_nl_mp_prio_send_ack(msk, &loc->addr, rem, bkup); release_sock(sk); set_flags_err: diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 29e39a790409..25d2d3def17a 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1040,7 +1040,9 @@ mptcp_pm_del_add_timer(struct mptcp_sock *msk, struct mptcp_pm_add_entry * mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk, const struct mptcp_addr_info *addr); -int mptcp_userspace_pm_set_flags(struct genl_info *info); +int mptcp_userspace_pm_set_flags(struct mptcp_pm_addr_entry *loc, + struct mptcp_addr_info *rem, + struct genl_info *info); int mptcp_pm_announce_addr(struct mptcp_sock *msk, const struct mptcp_addr_info *addr, bool echo);