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[144.76.156.219]) by smtp.gmail.com with ESMTPSA id 16-20020a05600c021000b003f7f1b3aff1sm5001100wmi.26.2023.06.08.06.21.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 06:21:14 -0700 (PDT) From: Matthieu Baerts Date: Thu, 08 Jun 2023 15:20:52 +0200 Subject: [PATCH net-next 4/4] mptcp: unify pm set_flags interfaces MIME-Version: 1.0 Message-Id: <20230608-upstream-net-next-20230608-mptcp-unify-pm-interfaces-v1-4-b301717c9ff5@tessares.net> References: <20230608-upstream-net-next-20230608-mptcp-unify-pm-interfaces-v1-0-b301717c9ff5@tessares.net> In-Reply-To: <20230608-upstream-net-next-20230608-mptcp-unify-pm-interfaces-v1-0-b301717c9ff5@tessares.net> To: mptcp@lists.linux.dev, Mat Martineau , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Geliang Tang , Matthieu Baerts X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=5515; i=matthieu.baerts@tessares.net; h=from:subject:message-id; bh=nAiGoxd4O08hlaui72f0yC95azIdQnaelnxY4OLX1JU=; b=owEBbQKS/ZANAwAIAfa3gk9CaaBzAcsmYgBkgdXFAQhBRtbu0GqjM4u9CPn+H7ZdGkwZJFZpk Fge/YuAqXCJAjMEAAEIAB0WIQToy4X3aHcFem4n93r2t4JPQmmgcwUCZIHVxQAKCRD2t4JPQmmg czUoD/48REKp6Kc18uG+cTTanHAy8TD8YOPHfsBVfzp8iXOdGJrzHrvKaRllLEOIKNk9XMLEtBF hu5b+Fz5MftBaMTRX1WRjRF/zwZ+XcB74rSt0vvm6GxwXTqdD0XN9jBPAHyNmMl55mFXCPnma4c O1PhcLJ4fbuivb5JdIw6D8XLDovfPrB4tKqxPK5hSi2q63uEFSnRU4pdgs3Z7djtxHPNcl6WNyF 3Hy7SQHDnmEhIxgA3MKDMQhoM4dsWl+XDUdwETLHVmxHhneIc5jZRpL71h3yV5WNH2VNAqjo3R6 erxFonYMx1LsV2sisNO05Z9oG2BmJYFdFiMk3+NqQpdFaTHBK9gaCMUp3MpqlHazQFjDobUGy0o 22SjA3QugvXcorEBskWRvfaHLj/PvSjf31GXoSIY+PifxXDH13Dt56YeGLmwuaA4ZJrFYZ23C0C B16P3w193SPyZRaYvpggSr6XARWYhFw0szX2wNCWY/ZTBnc9UriVeeaNeBa4jEO+0wWdmeREnPi AE+lc8/MQIsFkIOBH6mg9cXciLLQRXJF3U6R9f2Y+HAHrMrGqkcGYxwRde+Nc2E00VV681sj77l FCX0QW8EOlPvgCdZ3ke5W46s1tbkdjnNsRueVKA1nSLLQxAvMjX4GNdfCjJqd0rH0YoHNZfUo7i 5HguWofxWARmYNw== X-Developer-Key: i=matthieu.baerts@tessares.net; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768141005214033373?= X-GMAIL-MSGID: =?utf-8?q?1768141005214033373?= From: Geliang Tang This patch unifies the three PM set_flags() interfaces: mptcp_pm_nl_set_flags() in mptcp/pm_netlink.c for the in-kernel PM and mptcp_userspace_pm_set_flags() in mptcp/pm_userspace.c for the userspace PM. They'll be switched in the common PM infterface mptcp_pm_set_flags() in mptcp/pm.c based on whether token is NULL or not. Signed-off-by: Geliang Tang Reviewed-by: Matthieu Baerts Signed-off-by: Matthieu Baerts Reviewed-by: Larysa Zaremba --- net/mptcp/pm.c | 9 +++++++ net/mptcp/pm_netlink.c | 70 +++++++++++++++++++++++++++----------------------- net/mptcp/protocol.h | 4 +++ 3 files changed, 51 insertions(+), 32 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 2d04598dde05..36bf9196168b 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -433,6 +433,15 @@ int mptcp_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id return mptcp_pm_nl_get_flags_and_ifindex_by_id(msk, id, flags, ifindex); } +int mptcp_pm_set_flags(struct net *net, struct nlattr *token, + struct mptcp_pm_addr_entry *loc, + struct mptcp_pm_addr_entry *rem, u8 bkup) +{ + if (token) + return mptcp_userspace_pm_set_flags(net, token, loc, rem, bkup); + return mptcp_pm_nl_set_flags(net, loc, bkup); +} + void mptcp_pm_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk) { struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index e8b32d369f11..13be9205d36d 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1864,18 +1864,50 @@ static int mptcp_nl_set_flags(struct net *net, return ret; } +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup) +{ + struct pm_nl_pernet *pernet = pm_nl_get_pernet(net); + u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP | + MPTCP_PM_ADDR_FLAG_FULLMESH; + struct mptcp_pm_addr_entry *entry; + u8 lookup_by_id = 0; + + if (addr->addr.family == AF_UNSPEC) { + lookup_by_id = 1; + if (!addr->addr.id) + return -EOPNOTSUPP; + } + + spin_lock_bh(&pernet->lock); + entry = __lookup_addr(pernet, &addr->addr, lookup_by_id); + if (!entry) { + spin_unlock_bh(&pernet->lock); + return -EINVAL; + } + if ((addr->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && + (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + spin_unlock_bh(&pernet->lock); + return -EINVAL; + } + + changed = (addr->flags ^ entry->flags) & mask; + entry->flags = (entry->flags & ~mask) | (addr->flags & mask); + *addr = *entry; + spin_unlock_bh(&pernet->lock); + + mptcp_nl_set_flags(net, &addr->addr, bkup, changed); + return 0; +} + static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info) { - struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }, *entry; struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, }; + struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }; struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE]; struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN]; struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR]; - struct pm_nl_pernet *pernet = genl_info_pm_nl(info); - u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP | - MPTCP_PM_ADDR_FLAG_FULLMESH; struct net *net = sock_net(skb->sk); - u8 bkup = 0, lookup_by_id = 0; + u8 bkup = 0; int ret; ret = mptcp_pm_parse_entry(attr, info, false, &addr); @@ -1890,34 +1922,8 @@ static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info) if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP) bkup = 1; - if (addr.addr.family == AF_UNSPEC) { - lookup_by_id = 1; - if (!addr.addr.id) - return -EOPNOTSUPP; - } - if (token) - return mptcp_userspace_pm_set_flags(net, token, &addr, &remote, bkup); - - spin_lock_bh(&pernet->lock); - entry = __lookup_addr(pernet, &addr.addr, lookup_by_id); - if (!entry) { - spin_unlock_bh(&pernet->lock); - return -EINVAL; - } - if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && - (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { - spin_unlock_bh(&pernet->lock); - return -EINVAL; - } - - changed = (addr.flags ^ entry->flags) & mask; - entry->flags = (entry->flags & ~mask) | (addr.flags & mask); - addr = *entry; - spin_unlock_bh(&pernet->lock); - - mptcp_nl_set_flags(net, &addr.addr, bkup, changed); - return 0; + return mptcp_pm_set_flags(net, token, &addr, &remote, bkup); } static void mptcp_nl_mcast_send(struct net *net, struct sk_buff *nlskb, gfp_t gfp) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 607cbd2ccb98..1e7465bb66d5 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -827,6 +827,10 @@ int mptcp_pm_nl_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int int mptcp_userspace_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id, u8 *flags, int *ifindex); +int mptcp_pm_set_flags(struct net *net, struct nlattr *token, + struct mptcp_pm_addr_entry *loc, + struct mptcp_pm_addr_entry *rem, u8 bkup); +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup); int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token, struct mptcp_pm_addr_entry *loc, struct mptcp_pm_addr_entry *rem, u8 bkup);