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charset="utf-8" This patch moves struct pm_nl_pernet from pm_netlink.c to protocol.h, and export pm_nl_get_pernet_from_msk() helper. Then every fields of struct pm_nl_pernet can be accessed everywhere, not only being limited in pm_netlink.c. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 17 ++--------------- net/mptcp/protocol.h | 17 +++++++++++++++++ 2 files changed, 19 insertions(+), 15 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index bf4d96f6f99a..1dcf104d7a01 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -31,20 +31,6 @@ struct mptcp_pm_add_entry { struct mptcp_sock *sock; }; =20 -struct pm_nl_pernet { - /* protects pernet updates */ - spinlock_t lock; - struct list_head local_addr_list; - unsigned int addrs; - unsigned int stale_loss_cnt; - unsigned int add_addr_signal_max; - unsigned int add_addr_accept_max; - unsigned int local_addr_max; - unsigned int subflows_max; - unsigned int next_id; - DECLARE_BITMAP(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); -}; - #define MPTCP_PM_ADDR_MAX 8 #define ADD_ADDR_RETRANS_MAX 3 =20 @@ -53,11 +39,12 @@ static struct pm_nl_pernet *pm_nl_get_pernet(const stru= ct net *net) return net_generic(net, pm_nl_pernet_id); } =20 -static struct pm_nl_pernet * +struct pm_nl_pernet * pm_nl_get_pernet_from_msk(const struct mptcp_sock *msk) { return pm_nl_get_pernet(sock_net((struct sock *)msk)); } +EXPORT_SYMBOL_GPL(pm_nl_get_pernet_from_msk); =20 bool mptcp_addresses_equal(const struct mptcp_addr_info *a, const struct mptcp_addr_info *b, bool use_port) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 8529b3ae55e9..c38a2126071b 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1026,6 +1026,23 @@ void __init mptcp_pm_nl_init(void); void mptcp_pm_nl_work(struct mptcp_sock *msk); void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, const struct mptcp_rm_list *rm_list); + +struct pm_nl_pernet { + /* protects pernet updates */ + spinlock_t lock; + struct list_head local_addr_list; + unsigned int addrs; + unsigned int stale_loss_cnt; + unsigned int add_addr_signal_max; + unsigned int add_addr_accept_max; + unsigned int local_addr_max; + unsigned int subflows_max; + unsigned int next_id; + DECLARE_BITMAP(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); +}; + +struct pm_nl_pernet * +pm_nl_get_pernet_from_msk(const struct mptcp_sock *msk); unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk= ); 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charset="utf-8" Drop four mptcp_pm_get_* helpers: mptcp_pm_get_add_addr_signal_max(); mptcp_pm_get_add_addr_accept_max(); mptcp_pm_get_subflows_max(); mptcp_pm_get_local_addr_max(); The helper pm_nl_get_pernet_from_msk() now can be used to replace each of them. Signed-off-by: Geliang Tang --- net/mptcp/pm.c | 12 +++++----- net/mptcp/pm_netlink.c | 50 +++++++++--------------------------------- net/mptcp/protocol.h | 8 +++---- net/mptcp/sockopt.c | 9 ++++---- 4 files changed, 25 insertions(+), 54 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 4ae19113b8eb..48ff7ce20890 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -85,6 +85,7 @@ void mptcp_pm_new_connection(struct mptcp_sock *msk, cons= t struct sock *ssk, int =20 bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); struct mptcp_pm_data *pm =3D &msk->pm; unsigned int subflows_max; int ret =3D 0; @@ -99,7 +100,7 @@ bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk) return false; } =20 - subflows_max =3D mptcp_pm_get_subflows_max(msk); + subflows_max =3D READ_ONCE(pernet->subflows_max); =20 pr_debug("msk=3D%p subflows=3D%d max=3D%d allow=3D%d", msk, pm->subflows, subflows_max, READ_ONCE(pm->accept_subflow)); @@ -496,6 +497,7 @@ bool mptcp_pm_addr_families_match(const struct sock *sk, =20 void mptcp_pm_data_reset(struct mptcp_sock *msk) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); u8 pm_type =3D mptcp_get_pm_type(sock_net((struct sock *)msk)); struct mptcp_pm_data *pm =3D &msk->pm; =20 @@ -508,17 +510,17 @@ void mptcp_pm_data_reset(struct mptcp_sock *msk) WRITE_ONCE(pm->pm_type, pm_type); =20 if (pm_type =3D=3D MPTCP_PM_TYPE_KERNEL) { - bool subflows_allowed =3D !!mptcp_pm_get_subflows_max(msk); + bool subflows_allowed =3D !!READ_ONCE(pernet->subflows_max); =20 /* pm->work_pending must be only be set to 'true' when * pm->pm_type is set to MPTCP_PM_TYPE_KERNEL */ WRITE_ONCE(pm->work_pending, - (!!mptcp_pm_get_local_addr_max(msk) && + (!!READ_ONCE(pernet->local_addr_max) && subflows_allowed) || - !!mptcp_pm_get_add_addr_signal_max(msk)); + !!READ_ONCE(pernet->add_addr_signal_max)); WRITE_ONCE(pm->accept_addr, - !!mptcp_pm_get_add_addr_accept_max(msk) && + !!READ_ONCE(pernet->add_addr_accept_max) && subflows_allowed); WRITE_ONCE(pm->accept_subflow, subflows_allowed); } else { diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 1dcf104d7a01..dbf040e39af4 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -183,43 +183,11 @@ select_signal_address(struct pm_nl_pernet *pernet, co= nst struct mptcp_sock *msk) return ret; } =20 -unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk) -{ - const struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); - - return READ_ONCE(pernet->add_addr_signal_max); -} -EXPORT_SYMBOL_GPL(mptcp_pm_get_add_addr_signal_max); - -unsigned int mptcp_pm_get_add_addr_accept_max(const struct mptcp_sock *msk) -{ - struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); - - return READ_ONCE(pernet->add_addr_accept_max); -} -EXPORT_SYMBOL_GPL(mptcp_pm_get_add_addr_accept_max); - -unsigned int mptcp_pm_get_subflows_max(const struct mptcp_sock *msk) -{ - struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); - - return READ_ONCE(pernet->subflows_max); -} -EXPORT_SYMBOL_GPL(mptcp_pm_get_subflows_max); - -unsigned int mptcp_pm_get_local_addr_max(const struct mptcp_sock *msk) -{ - struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); - - return READ_ONCE(pernet->local_addr_max); -} -EXPORT_SYMBOL_GPL(mptcp_pm_get_local_addr_max); - bool mptcp_pm_nl_check_work_pending(struct mptcp_sock *msk) { struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); =20 - if (msk->pm.subflows =3D=3D mptcp_pm_get_subflows_max(msk) || + if (msk->pm.subflows =3D=3D READ_ONCE(pernet->subflows_max) || (find_next_and_bit(pernet->id_bitmap, msk->pm.id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1, 0) =3D=3D MPTCP_PM_MAX_ADDR_ID + 1)) { WRITE_ONCE(msk->pm.work_pending, false); @@ -404,6 +372,7 @@ static unsigned int fill_remote_addresses_vec(struct mp= tcp_sock *msk, bool fullmesh, struct mptcp_addr_info *addrs) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); bool deny_id0 =3D READ_ONCE(msk->pm.remote_deny_join_id0); struct sock *sk =3D (struct sock *)msk, *ssk; struct mptcp_subflow_context *subflow; @@ -411,7 +380,7 @@ static unsigned int fill_remote_addresses_vec(struct mp= tcp_sock *msk, unsigned int subflows_max; int i =3D 0; =20 - subflows_max =3D mptcp_pm_get_subflows_max(msk); + subflows_max =3D READ_ONCE(pernet->subflows_max); remote_address((struct sock_common *)sk, &remote); =20 /* Non-fullmesh endpoint, fill in the single entry @@ -514,9 +483,9 @@ static void mptcp_pm_create_subflow_or_signal_addr(stru= ct mptcp_sock *msk) =20 pernet =3D pm_nl_get_pernet(sock_net(sk)); =20 - add_addr_signal_max =3D mptcp_pm_get_add_addr_signal_max(msk); - local_addr_max =3D mptcp_pm_get_local_addr_max(msk); - subflows_max =3D mptcp_pm_get_subflows_max(msk); + add_addr_signal_max =3D READ_ONCE(pernet->add_addr_signal_max); + local_addr_max =3D READ_ONCE(pernet->local_addr_max); + subflows_max =3D READ_ONCE(pernet->subflows_max); =20 /* do lazy endpoint usage accounting for the MPC subflows */ if (unlikely(!(msk->pm.status & BIT(MPTCP_PM_MPC_ENDPOINT_ACCOUNTED))) &&= msk->first) { @@ -621,7 +590,7 @@ static unsigned int fill_local_addresses_vec(struct mpt= cp_sock *msk, int i =3D 0; =20 pernet =3D pm_nl_get_pernet_from_msk(msk); - subflows_max =3D mptcp_pm_get_subflows_max(msk); + subflows_max =3D READ_ONCE(pernet->subflows_max); =20 rcu_read_lock(); list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) { @@ -664,6 +633,7 @@ static unsigned int fill_local_addresses_vec(struct mpt= cp_sock *msk, =20 static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); struct mptcp_addr_info addrs[MPTCP_PM_ADDR_MAX]; struct sock *sk =3D (struct sock *)msk; unsigned int add_addr_accept_max; @@ -671,8 +641,8 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_= sock *msk) unsigned int subflows_max; int i, nr; =20 - add_addr_accept_max =3D mptcp_pm_get_add_addr_accept_max(msk); - subflows_max =3D mptcp_pm_get_subflows_max(msk); + add_addr_accept_max =3D READ_ONCE(pernet->add_addr_accept_max); + subflows_max =3D READ_ONCE(pernet->subflows_max); =20 pr_debug("accepted %d:%d remote family %d", msk->pm.add_addr_accepted, add_addr_accept_max, diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index c38a2126071b..88f5b422f941 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1043,15 +1043,13 @@ struct pm_nl_pernet { =20 struct pm_nl_pernet * pm_nl_get_pernet_from_msk(const struct mptcp_sock *msk); -unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk= ); -unsigned int mptcp_pm_get_add_addr_accept_max(const struct mptcp_sock *msk= ); -unsigned int mptcp_pm_get_subflows_max(const struct mptcp_sock *msk); -unsigned int mptcp_pm_get_local_addr_max(const struct mptcp_sock *msk); =20 /* called under PM lock */ static inline void __mptcp_pm_close_subflow(struct mptcp_sock *msk) { - if (--msk->pm.subflows < mptcp_pm_get_subflows_max(msk)) + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); + + if (--msk->pm.subflows < READ_ONCE(pernet->subflows_max)) WRITE_ONCE(msk->pm.accept_subflow, true); } =20 diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index cabe856b2a45..8d63df5ded50 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -893,6 +893,7 @@ static int mptcp_getsockopt_first_sf_only(struct mptcp_= sock *msk, int level, int =20 void mptcp_diag_fill_info(struct mptcp_sock *msk, struct mptcp_info *info) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); 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charset="utf-8" This patch uses pm_nl_get_pernet_from_msk() to get the pernet id_bitmap instead of using a local bitmap when appending a new local address into the userspace PM local address list. Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index efecbe3cf415..b3a606a5e182 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -28,7 +28,7 @@ void mptcp_free_local_addr_list(struct mptcp_sock *msk) static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *entry) { - DECLARE_BITMAP(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); struct mptcp_pm_addr_entry *match =3D NULL; struct sock *sk =3D (struct sock *)msk; struct mptcp_pm_addr_entry *e; @@ -36,8 +36,6 @@ static int mptcp_userspace_pm_append_new_local_addr(struc= t mptcp_sock *msk, bool id_match =3D false; int ret =3D -EINVAL; =20 - bitmap_zero(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); - spin_lock_bh(&msk->pm.lock); list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) { addr_match =3D mptcp_addresses_equal(&e->addr, &entry->addr, true); @@ -50,7 +48,6 @@ static int mptcp_userspace_pm_append_new_local_addr(struc= t mptcp_sock *msk, } else if (addr_match || id_match) { break; } - __set_bit(e->addr.id, id_bitmap); } =20 if (!match && !addr_match && !id_match) { @@ -65,9 +62,10 @@ static int mptcp_userspace_pm_append_new_local_addr(stru= ct mptcp_sock *msk, =20 *e =3D *entry; if (!e->addr.id) - e->addr.id =3D find_next_zero_bit(id_bitmap, + e->addr.id =3D find_next_zero_bit(pernet->id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1, 1); + __set_bit(e->addr.id, pernet->id_bitmap); list_add_tail_rcu(&e->list, &msk->pm.userspace_pm_local_addr_list); msk->pm.local_addr_used++; ret =3D e->addr.id; --=20 2.35.3 From nobody Sat May 18 23:55:22 2024 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on2072.outbound.protection.outlook.com [40.107.8.72]) (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 111908475 for ; 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charset="utf-8" Corresponding __lookup_addr_by_id() helper in the in-kernel netlink PM, this patch adds a new helper mptcp_userspace_pm_lookup_addr_by_id() to lookup the address entry with the given id on the userspace pm local address list. Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index b3a606a5e182..6999296cd5db 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -25,6 +25,18 @@ void mptcp_free_local_addr_list(struct mptcp_sock *msk) } } =20 +static struct mptcp_pm_addr_entry * +mptcp_userspace_pm_lookup_addr_by_id(struct mptcp_sock *msk, unsigned int = id) +{ + struct mptcp_pm_addr_entry *entry; + + list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) { + if (entry->addr.id =3D=3D id) + return entry; + } + return NULL; +} + static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *entry) { @@ -107,15 +119,10 @@ int mptcp_userspace_pm_get_flags_and_ifindex_by_id(st= ruct mptcp_sock *msk, unsigned int id, u8 *flags, int *ifindex) { - struct mptcp_pm_addr_entry *entry, *match =3D NULL; + struct mptcp_pm_addr_entry *match; =20 spin_lock_bh(&msk->pm.lock); - list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) { - if (id =3D=3D entry->addr.id) { - match =3D entry; - break; - } - } + match =3D mptcp_userspace_pm_lookup_addr_by_id(msk, id); spin_unlock_bh(&msk->pm.lock); if (match) { *flags =3D match->flags; @@ -247,7 +254,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct= genl_info *info) { struct nlattr *token =3D info->attrs[MPTCP_PM_ATTR_TOKEN]; struct nlattr *id =3D info->attrs[MPTCP_PM_ATTR_LOC_ID]; - struct mptcp_pm_addr_entry *match =3D NULL; + struct mptcp_pm_addr_entry *match; struct mptcp_pm_addr_entry *entry; struct mptcp_sock *msk; LIST_HEAD(free_list); @@ -284,13 +291,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struc= t genl_info *info) =20 lock_sock(sk); =20 - list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) { - if (entry->addr.id =3D=3D id_val) { - match =3D entry; - break; - } - } - + match =3D mptcp_userspace_pm_lookup_addr_by_id(msk, id_val); 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charset="utf-8" When the lookup_by_id parameter of __lookup_addr() is true, it's the same as __lookup_addr_by_id(), it can be replaced by __lookup_addr_by_id() directly. So drop this parameter, let __lookup_addr() only looks up address on the local address list by comparing addresses in it, not address ids. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index dbf040e39af4..4cb52df57ba5 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -458,15 +458,12 @@ __lookup_addr_by_id(struct pm_nl_pernet *pernet, unsi= gned int id) } =20 static struct mptcp_pm_addr_entry * -__lookup_addr(struct pm_nl_pernet *pernet, const struct mptcp_addr_info *i= nfo, - bool lookup_by_id) +__lookup_addr(struct pm_nl_pernet *pernet, const struct mptcp_addr_info *i= nfo) { struct mptcp_pm_addr_entry *entry; =20 list_for_each_entry(entry, &pernet->local_addr_list, list) { - if ((!lookup_by_id && - mptcp_addresses_equal(&entry->addr, info, entry->addr.port)) || - (lookup_by_id && entry->addr.id =3D=3D info->id)) + if (mptcp_addresses_equal(&entry->addr, info, entry->addr.port)) return entry; } return NULL; @@ -496,7 +493,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(stru= ct mptcp_sock *msk) =20 mptcp_local_address((struct sock_common *)msk->first, &mpc_addr); 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charset="utf-8" This patch adds a new function __userspace_pm_lookup_addr_by_id() to lookup the address entry by the given id in the userspace local addresses list. Invoke it when dumping addresses from netlink commands. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 9 +++++++-- net/mptcp/pm_userspace.c | 25 +++++++++++++++++++++++++ net/mptcp/protocol.h | 2 ++ 3 files changed, 34 insertions(+), 2 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 4cb52df57ba5..08b4211fbcbd 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1673,8 +1673,13 @@ int mptcp_pm_nl_get_addr_dumpit(struct sk_buff *msg, for (i =3D id; i < MPTCP_PM_MAX_ADDR_ID + 1; i++) { if (test_bit(i, pernet->id_bitmap)) { entry =3D __lookup_addr_by_id(pernet, i); - if (!entry) - break; + if (!entry) { + spin_unlock_bh(&pernet->lock); + entry =3D __userspace_pm_lookup_addr_by_id(net, i); + spin_lock_bh(&pernet->lock); + if (!entry) + break; + } =20 if (entry->addr.id <=3D id) continue; diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 6999296cd5db..5e45e36ce1d3 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -549,3 +549,28 @@ int mptcp_userspace_pm_set_flags(struct net *net, stru= ct nlattr *token, sock_put(sk); return ret; } + +struct mptcp_pm_addr_entry * +__userspace_pm_lookup_addr_by_id(struct net *net, unsigned int id) +{ + struct mptcp_pm_addr_entry *entry =3D NULL; + long s_slot =3D 0, s_num =3D 0; + struct mptcp_sock *msk; + + while ((msk =3D mptcp_token_iter_next(net, &s_slot, &s_num)) !=3D NULL) { + struct sock *sk =3D (struct sock *)msk; + + if (mptcp_pm_is_userspace(msk)) { + lock_sock(sk); + spin_lock_bh(&msk->pm.lock); + entry =3D mptcp_userspace_pm_lookup_addr_by_id(msk, id); + spin_unlock_bh(&msk->pm.lock); + release_sock(sk); + } + + sock_put(sk); + cond_resched(); + } + + return entry; +} diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 88f5b422f941..c30e59278080 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -1021,6 +1021,8 @@ 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); int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_inf= o *skc); 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charset="utf-8" This patch uses mptcp_pm_parse_entry() instead of mptcp_pm_parse_addr() to get the flags of the entry. Add MPTCP_PM_ADDR_FLAG_SUBFLOW flag check in mptcp_pm_nl_subflow_create_doit(). Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 5e45e36ce1d3..de10be21bf26 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -347,12 +347,19 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *s= kb, struct genl_info *info) goto create_err; } =20 - err =3D mptcp_pm_parse_addr(laddr, info, &addr_l); + err =3D mptcp_pm_parse_entry(laddr, info, true, &local); if (err < 0) { NL_SET_ERR_MSG_ATTR(info->extack, laddr, "error parsing local addr"); goto create_err; } =20 + if (!(local.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)) { + GENL_SET_ERR_MSG(info, "invalid addr flags"); + err =3D -EINVAL; + goto create_err; + } + addr_l =3D local.addr; + err =3D mptcp_pm_parse_addr(raddr, info, &addr_r); if (err < 0) { NL_SET_ERR_MSG_ATTR(info->extack, raddr, "error parsing remote addr"); @@ -365,7 +372,6 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb= , struct genl_info *info) goto create_err; 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charset="utf-8" This patch adds the address flag MPTCP_PM_ADDR_FLAG_SUBFLOW in csf() in pm_nl_ctl.c when subflow is created by a userspace PM. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c b/tools/testing/= selftests/net/mptcp/pm_nl_ctl.c index 49369c4a5f26..e97856323ec3 100644 --- a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c +++ b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c @@ -453,6 +453,7 @@ int csf(int fd, int pm_family, int argc, char *argv[]) char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) + NLMSG_ALIGN(sizeof(struct genlmsghdr)) + 1024]; + u_int32_t flags =3D MPTCP_PM_ADDR_FLAG_SUBFLOW; const char *params[5]; struct nlmsghdr *nh; struct rtattr *addr; @@ -558,6 +559,13 @@ int csf(int fd, int pm_family, int argc, char *argv[]) off +=3D NLMSG_ALIGN(rta->rta_len); } =20 + /* addr flags */ + rta =3D (void *)(data + off); + rta->rta_type =3D MPTCP_PM_ADDR_ATTR_FLAGS; + rta->rta_len =3D RTA_LENGTH(4); + memcpy(RTA_DATA(rta), &flags, 4); + off +=3D NLMSG_ALIGN(rta->rta_len); + addr->rta_len =3D off - addr_start; 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charset="utf-8" The helper check() will be moved into mptcp_lib.sh, and be used by two scripts mptcp_join.sh and pm_netlink.sh. The former prints colored output while the latter is not. It makes sense to unify them. Use mptcp_lib_print_ok(), mptcp_lib_print_err, and mptcp_lib_echo_err helpers in script pm_netlink.sh to print test results with colors. Having colors helps to quickly identify issues when looking at a long list of output logs and results. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/pm_netlink.sh | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testin= g/selftests/net/mptcp/pm_netlink.sh index 8f4ff123a7eb..b1155f4a8504 100755 --- a/tools/testing/selftests/net/mptcp/pm_netlink.sh +++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh @@ -60,16 +60,15 @@ check() =20 printf "%-50s" "$msg" if [ $cmd_ret -ne 0 ]; then - echo "[FAIL] command execution '$cmd' stderr " + mptcp_lib_print_err "[FAIL] command execution '$cmd' stderr " cat $err mptcp_lib_result_fail "${msg} # error ${cmd_ret}" ret=3D1 elif [ "$out" =3D "$expected" ]; then - echo "[ OK ]" + mptcp_lib_print_ok "[ OK ]" mptcp_lib_result_pass "${msg}" else - echo -n "[FAIL] " - echo "expected '$expected' got '$out'" + mptcp_lib_print_err "[FAIL] expected '$expected' got '$out'" mptcp_lib_result_fail "${msg} # different output" ret=3D1 fi --=20 2.35.3 From nobody Sat May 18 23:55:22 2024 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on2077.outbound.protection.outlook.com [40.107.8.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 008EB8474 for ; 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charset="utf-8" This patch adds a new helper mptcp_lib_cleanup() in mptcp_lib.sh, it's a public cleanup interface, being invoked in every cleanup() in all scripts. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/diag.sh | 1 + tools/testing/selftests/net/mptcp/mptcp_connect.sh | 1 + tools/testing/selftests/net/mptcp/mptcp_join.sh | 1 + tools/testing/selftests/net/mptcp/mptcp_lib.sh | 5 +++++ tools/testing/selftests/net/mptcp/mptcp_sockopt.sh | 1 + tools/testing/selftests/net/mptcp/pm_netlink.sh | 1 + tools/testing/selftests/net/mptcp/simult_flows.sh | 1 + tools/testing/selftests/net/mptcp/userspace_pm.sh | 1 + 8 files changed, 12 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/self= tests/net/mptcp/diag.sh index 95b498efacd1..a678ee21973b 100755 --- a/tools/testing/selftests/net/mptcp/diag.sh +++ b/tools/testing/selftests/net/mptcp/diag.sh @@ -31,6 +31,7 @@ cleanup() ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGKILL &>/dev/null =20 ip netns del $ns + mptcp_lib_cleanup } =20 mptcp_lib_check_mptcp diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/tes= ting/selftests/net/mptcp/mptcp_connect.sh index 7898d62fce0b..98f4e82789ba 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh @@ -143,6 +143,7 @@ cleanup() ip netns del $netns rm -f /tmp/$netns.{nstat,out} done + mptcp_lib_cleanup } =20 mptcp_lib_check_mptcp diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testin= g/selftests/net/mptcp/mptcp_join.sh index 995280882428..3b49a1893772 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -198,6 +198,7 @@ cleanup() rm -f "$tmpfile" rm -rf $evts_ns1 $evts_ns2 cleanup_partial + mptcp_lib_cleanup } =20 print_title() diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing= /selftests/net/mptcp/mptcp_lib.sh index 1f8be9dd0e20..cbaa55ab89b1 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh @@ -299,3 +299,8 @@ mptcp_lib_wait_local_port_listen() { sleep 0.1 done } + +mptcp_lib_cleanup() +{ + echo "cleanup" +} diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/tes= ting/selftests/net/mptcp/mptcp_sockopt.sh index c643872ddf47..75d8c648f9de 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh @@ -85,6 +85,7 @@ cleanup() done rm -f "$cin" "$cout" rm -f "$sin" "$sout" + mptcp_lib_cleanup } =20 mptcp_lib_check_mptcp diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testin= g/selftests/net/mptcp/pm_netlink.sh index b1155f4a8504..85b2c9145601 100755 --- a/tools/testing/selftests/net/mptcp/pm_netlink.sh +++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh @@ -34,6 +34,7 @@ cleanup() { rm -f $err ip netns del $ns1 + mptcp_lib_cleanup } =20 mptcp_lib_check_mptcp diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/test= ing/selftests/net/mptcp/simult_flows.sh index ae8ad5d6fb9d..436500c55e12 100755 --- a/tools/testing/selftests/net/mptcp/simult_flows.sh +++ b/tools/testing/selftests/net/mptcp/simult_flows.sh @@ -34,6 +34,7 @@ cleanup() for netns in "$ns1" "$ns2" "$ns3";do ip netns del $netns done + mptcp_lib_cleanup } =20 mptcp_lib_check_mptcp diff --git a/tools/testing/selftests/net/mptcp/userspace_pm.sh b/tools/test= ing/selftests/net/mptcp/userspace_pm.sh index 6167837f48e1..005251b61d7a 100755 --- a/tools/testing/selftests/net/mptcp/userspace_pm.sh +++ b/tools/testing/selftests/net/mptcp/userspace_pm.sh @@ -129,6 +129,7 @@ cleanup() =20 rm -rf $file $client_evts $server_evts =20 + mptcp_lib_cleanup _printf "Done\n" } =20 --=20 2.35.3 From nobody Sat May 18 23:55:22 2024 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on2057.outbound.protection.outlook.com [40.107.8.57]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 985048475 for ; 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charset="utf-8" Extract the main part of check() in pm_netlink.sh to a new function mptcp_lib_check() in mptcp_lib.sh. It will be used in mptcp_john.sh later. Signed-off-by: Geliang Tang --- .../testing/selftests/net/mptcp/mptcp_lib.sh | 27 ++++++++++++++++++ .../testing/selftests/net/mptcp/pm_netlink.sh | 28 ++++++------------- 2 files changed, 35 insertions(+), 20 deletions(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing= /selftests/net/mptcp/mptcp_lib.sh index cbaa55ab89b1..466fde97d3f4 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh @@ -300,7 +300,34 @@ mptcp_lib_wait_local_port_listen() { done } =20 +mptcp_lib_err=3D$(mktemp) + +mptcp_lib_check() +{ + local cmd=3D"$1" + local expected=3D"$2" + local msg=3D"$3" + local out=3D`$cmd 2>$mptcp_lib_err` + local cmd_ret=3D$? + + printf "%-42s" "$msg" + if [ $cmd_ret -ne 0 ]; then + mptcp_lib_print_err "[FAIL] command execution '$cmd' stderr " + cat $mptcp_lib_err + ret=3D1 + return $cmd_ret + elif [ "$out" =3D "$expected" ]; then + mptcp_lib_print_ok "[ OK ]" + return 0 + else + mptcp_lib_print_err "[FAIL] expected '$expected' got '$out'" + ret=3D1 + return 1 + fi +} + mptcp_lib_cleanup() { echo "cleanup" + rm -f $mptcp_lib_err } diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testin= g/selftests/net/mptcp/pm_netlink.sh index 85b2c9145601..8d30d4a1db57 100755 --- a/tools/testing/selftests/net/mptcp/pm_netlink.sh +++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh @@ -27,12 +27,10 @@ done sec=3D$(date +%s) rndh=3D$(printf %x $sec)-$(mktemp -u XXXXXX) ns1=3D"ns1-$rndh" -err=3D$(mktemp) ret=3D0 =20 cleanup() { - rm -f $err ip netns del $ns1 mptcp_lib_cleanup } @@ -53,25 +51,15 @@ ip netns exec $ns1 sysctl -q net.mptcp.enabled=3D1 =20 check() { - local cmd=3D"$1" - local expected=3D"$2" - local msg=3D"$3" - local out=3D`$cmd 2>$err` - local cmd_ret=3D$? - - printf "%-50s" "$msg" - if [ $cmd_ret -ne 0 ]; 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charset="utf-8" This patch tests newly added dump command for the userspace PM. Add these commands into userspace pm tests. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testin= g/selftests/net/mptcp/mptcp_join.sh index 3b49a1893772..9e29251eee15 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -3406,6 +3406,8 @@ userspace_tests() local tests_pid=3D$! wait_mpj $ns1 userspace_pm_add_addr $ns1 10.0.2.1 10 + mptcp_lib_check "ip netns exec $ns1 ./pm_nl_ctl dump" \ + "id 10 flags signal 10.0.2.1" " dump addrs" chk_join_nr 1 1 1 chk_add_nr 1 1 chk_mptcp_info subflows 1 subflows 1 @@ -3430,6 +3432,8 @@ userspace_tests() local tests_pid=3D$! wait_mpj $ns2 userspace_pm_add_sf $ns2 10.0.3.2 20 + mptcp_lib_check "ip netns exec $ns2 ./pm_nl_ctl dump" \ + "id 20 flags subflow 10.0.3.2" " dump addrs" chk_join_nr 1 1 1 chk_mptcp_info subflows 1 subflows 1 chk_subflows_total 2 2 --=20 2.35.3 From nobody Sat May 18 23:55:22 2024 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on2050.outbound.protection.outlook.com [40.107.8.50]) (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 6DD558820 for ; 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charset="utf-8" Same as other functions in pm_userspace.c, this patch renames mptcp_free_local_addr_list() with the userspace pm prefix as mptcp_userspace_pm_free_local_addr_list(). Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 2 +- net/mptcp/protocol.c | 2 +- net/mptcp/protocol.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index de10be21bf26..70f6a510e3b4 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -7,7 +7,7 @@ #include "protocol.h" #include "mib.h" =20 -void mptcp_free_local_addr_list(struct mptcp_sock *msk) +void mptcp_userspace_pm_free_local_addr_list(struct mptcp_sock *msk) { struct mptcp_pm_addr_entry *entry, *tmp; struct sock *sk =3D (struct sock *)msk; diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 6956fde61c68..f2f0ce608219 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -3321,7 +3321,7 @@ void mptcp_destroy_common(struct mptcp_sock *msk, uns= igned int flags) WRITE_ONCE(msk->rmem_fwd_alloc, 0); mptcp_token_destroy(msk); mptcp_pm_free_anno_list(msk); - mptcp_free_local_addr_list(msk); + mptcp_userspace_pm_free_local_addr_list(msk); 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charset="utf-8" This patch adds a new function mptcp_userspace_pm_flush_addrs_list() to free the userspace local addresses list. Invoke it when flushing addresses from netlink commands. Signed-off-by: Geliang Tang --- net/mptcp/pm_netlink.c | 2 ++ net/mptcp/pm_userspace.c | 25 +++++++++++++++++++++++++ net/mptcp/protocol.h | 1 + 3 files changed, 28 insertions(+) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 08b4211fbcbd..b7e4c8d21078 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1565,6 +1565,8 @@ int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb,= struct genl_info *info) mptcp_nl_remove_addrs_list(sock_net(skb->sk), &free_list); synchronize_rcu(); __flush_addrs(&free_list); + + mptcp_userspace_pm_flush_addrs_list(sock_net(skb->sk)); return 0; } =20 diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 70f6a510e3b4..abcdc95e7bde 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -20,6 +20,8 @@ void mptcp_userspace_pm_free_local_addr_list(struct mptcp= _sock *msk) list_splice_init(&msk->pm.userspace_pm_local_addr_list, &free_list); spin_unlock_bh(&msk->pm.lock); =20 + mptcp_pm_remove_addrs_and_subflows(msk, &free_list); + list_for_each_entry_safe(entry, tmp, &free_list, list) { sock_kfree_s(sk, entry, sizeof(*entry)); } @@ -580,3 +582,26 @@ __userspace_pm_lookup_addr_by_id(struct net *net, unsi= gned int id) =20 return entry; } + +void mptcp_userspace_pm_flush_addrs_list(struct net *net) +{ + long s_slot =3D 0, s_num =3D 0; + struct mptcp_sock *msk; + + while ((msk =3D mptcp_token_iter_next(net, &s_slot, &s_num)) !=3D NULL) { + struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); + struct sock *sk =3D (struct sock *)msk; + + if (mptcp_pm_is_userspace(msk)) { + lock_sock(sk); + spin_lock_bh(&pernet->lock); + bitmap_zero(pernet->id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + spin_unlock_bh(&pernet->lock); + mptcp_userspace_pm_free_local_addr_list(msk); + release_sock(sk); + } + + sock_put(sk); + cond_resched(); + } +} diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 76981adcac22..089fbebd21d3 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -944,6 +944,7 @@ void mptcp_pm_remove_addrs_and_subflows(struct mptcp_so= ck *msk, struct list_head *rm_list); 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charset="utf-8" This patch tests newly added flush command for the userspace PM. Add this command into userspace pm test. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testin= g/selftests/net/mptcp/mptcp_join.sh index 9e29251eee15..ada523c160ad 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -3461,6 +3461,10 @@ userspace_tests() chk_join_nr 1 1 1 chk_mptcp_info subflows 1 subflows 1 chk_subflows_total 2 2 + ip netns exec $ns2 ./pm_nl_ctl flush + mptcp_lib_check "ip netns exec $ns2 ./pm_nl_ctl dump" \ + "" " dump addrs" + chk_rm_nr 0 1 kill_events_pids wait $tests_pid fi --=20 2.35.3 From nobody Sat May 18 23:55:22 2024 Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-vi1eur04on2072.outbound.protection.outlook.com [40.107.8.72]) (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 DBD58848A for ; 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charset="utf-8" This patch adds a new parameter use_id for mptcp_addresses_equal() to test the address ids, as well as the address. This can be used to test if the two given addresses are identically equal, they have both the same address and the same address id. Signed-off-by: Geliang Tang --- net/mptcp/pm.c | 2 +- net/mptcp/pm_netlink.c | 32 +++++++++++++++++++------------- net/mptcp/pm_userspace.c | 4 ++-- net/mptcp/protocol.h | 3 ++- 4 files changed, 24 insertions(+), 17 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 48ff7ce20890..77a0e859076c 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -420,7 +420,7 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struc= t sock_common *skc) */ 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)) + if (mptcp_addresses_equal(&msk_local, &skc_local, false, false)) return 0; =20 if (mptcp_pm_is_userspace(msk)) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index b7e4c8d21078..599137001148 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -47,7 +47,8 @@ pm_nl_get_pernet_from_msk(const struct mptcp_sock *msk) EXPORT_SYMBOL_GPL(pm_nl_get_pernet_from_msk); =20 bool mptcp_addresses_equal(const struct mptcp_addr_info *a, - const struct mptcp_addr_info *b, bool use_port) + const struct mptcp_addr_info *b, + bool use_port, bool use_id) { bool addr_equals =3D false; =20 @@ -68,10 +69,14 @@ bool mptcp_addresses_equal(const struct mptcp_addr_info= *a, =20 if (!addr_equals) return false; - if (!use_port) + if (!use_port && !use_id) return true; =20 - return a->port =3D=3D b->port; + if (use_port && use_id) + return (a->port =3D=3D b->port) && (a->id =3D=3D b->id); + if (use_port) + return a->port =3D=3D b->port; + return a->id =3D=3D b->id; } =20 void mptcp_local_address(const struct sock_common *skc, struct mptcp_addr_= info *addr) @@ -110,7 +115,7 @@ static bool lookup_subflow_by_saddr(const struct list_h= ead *list, skc =3D (struct sock_common *)mptcp_subflow_tcp_sock(subflow); =20 mptcp_local_address(skc, &cur); - if (mptcp_addresses_equal(&cur, saddr, saddr->port)) + if (mptcp_addresses_equal(&cur, saddr, saddr->port, false)) return true; } =20 @@ -128,7 +133,7 @@ static bool lookup_subflow_by_daddr(const struct list_h= ead *list, skc =3D (struct sock_common *)mptcp_subflow_tcp_sock(subflow); =20 remote_address(skc, &cur); - if (mptcp_addresses_equal(&cur, daddr, daddr->port)) + if (mptcp_addresses_equal(&cur, daddr, daddr->port, false)) return true; } =20 @@ -205,7 +210,7 @@ mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock= *msk, lockdep_assert_held(&msk->pm.lock); =20 list_for_each_entry(entry, &msk->pm.anno_list, list) { - if (mptcp_addresses_equal(&entry->addr, addr, true)) + if (mptcp_addresses_equal(&entry->addr, addr, true, false)) return entry; } =20 @@ -222,7 +227,7 @@ bool mptcp_pm_sport_in_anno_list(struct mptcp_sock *msk= , const struct sock *sk) =20 spin_lock_bh(&msk->pm.lock); list_for_each_entry(entry, &msk->pm.anno_list, list) { - if (mptcp_addresses_equal(&entry->addr, &saddr, true)) { + if (mptcp_addresses_equal(&entry->addr, &saddr, true, false)) { ret =3D true; goto out; } @@ -463,7 +468,7 @@ __lookup_addr(struct pm_nl_pernet *pernet, const struct= mptcp_addr_info *info) struct mptcp_pm_addr_entry *entry; =20 list_for_each_entry(entry, &pernet->local_addr_list, list) { - if (mptcp_addresses_equal(&entry->addr, info, entry->addr.port)) + if (mptcp_addresses_equal(&entry->addr, info, entry->addr.port, false)) return entry; } return NULL; @@ -704,12 +709,12 @@ int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *m= sk, struct mptcp_addr_info local, remote; =20 mptcp_local_address((struct sock_common *)ssk, &local); - if (!mptcp_addresses_equal(&local, addr, addr->port)) + if (!mptcp_addresses_equal(&local, addr, addr->port, false)) continue; =20 if (rem && rem->family !=3D AF_UNSPEC) { remote_address((struct sock_common *)ssk, &remote); - if (!mptcp_addresses_equal(&remote, rem, rem->port)) + if (!mptcp_addresses_equal(&remote, rem, rem->port, false)) continue; } =20 @@ -883,7 +888,8 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_= nl_pernet *pernet, entry->addr.port =3D 0; list_for_each_entry(cur, &pernet->local_addr_list, list) { if (mptcp_addresses_equal(&cur->addr, &entry->addr, - cur->addr.port || entry->addr.port)) { + cur->addr.port || entry->addr.port, + false)) { /* allow replacing the exiting endpoint only if such * endpoint is an implicit one and the user-space * did not provide an endpoint id @@ -1021,7 +1027,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, = struct mptcp_addr_info *skc =20 rcu_read_lock(); list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) { - if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) { + if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port, false)) { ret =3D entry->addr.id; break; } @@ -1397,7 +1403,7 @@ static int mptcp_nl_remove_id_zero_address(struct net= *net, goto next; =20 mptcp_local_address((struct sock_common *)msk, &msk_local); - if (!mptcp_addresses_equal(&msk_local, addr, addr->port)) + if (!mptcp_addresses_equal(&msk_local, addr, addr->port, false)) goto next; =20 lock_sock(sk); diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index abcdc95e7bde..58e9ba51ad36 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -52,7 +52,7 @@ static int mptcp_userspace_pm_append_new_local_addr(struc= t mptcp_sock *msk, =20 spin_lock_bh(&msk->pm.lock); list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) { - addr_match =3D mptcp_addresses_equal(&e->addr, &entry->addr, true); + addr_match =3D mptcp_addresses_equal(&e->addr, &entry->addr, true, false= ); if (addr_match && entry->addr.id =3D=3D 0) entry->addr.id =3D e->addr.id; id_match =3D (e->addr.id =3D=3D entry->addr.id); @@ -103,7 +103,7 @@ static int mptcp_userspace_pm_delete_local_addr(struct = mptcp_sock *msk, struct mptcp_pm_addr_entry *entry, *tmp; =20 list_for_each_entry_safe(entry, tmp, &msk->pm.userspace_pm_local_addr_lis= t, list) { - if (mptcp_addresses_equal(&entry->addr, &addr->addr, false)) { + if (mptcp_addresses_equal(&entry->addr, &addr->addr, false, false)) { /* TODO: a refcount is needed because the entry can * be used multiple times (e.g. fullmesh mode). */ diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 089fbebd21d3..e66b1fb7b522 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -645,7 +645,8 @@ void __mptcp_unaccepted_force_close(struct sock *sk); void mptcp_set_owner_r(struct sk_buff *skb, struct sock *sk); =20 bool mptcp_addresses_equal(const struct mptcp_addr_info *a, - const struct mptcp_addr_info *b, bool use_port); + const struct mptcp_addr_info *b, + bool use_port, bool use_id); 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charset="utf-8" Add a new parameter check_id for mptcp_lookup_anno_list_by_saddr(), and pass it to mptcp_addresses_equal(). Then in mptcp_pm_del_add_timer(), the input parameter check_id can be passed as the new parameter into mptcp_lookup_anno_list_by_saddr(). After this, this condition: (!check_id || entry->addr.id =3D=3D addr->id) can be dropped, only test if 'entry' is NULL is enough. Signed-off-by: Geliang Tang --- net/mptcp/pm.c | 2 +- net/mptcp/pm_netlink.c | 13 +++++++------ net/mptcp/protocol.h | 3 ++- 3 files changed, 10 insertions(+), 8 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 77a0e859076c..d5ae2e775059 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -259,7 +259,7 @@ void mptcp_pm_add_addr_echoed(struct mptcp_sock *msk, =20 spin_lock_bh(&pm->lock); =20 - if (mptcp_lookup_anno_list_by_saddr(msk, addr) && READ_ONCE(pm->work_pend= ing)) + if (mptcp_lookup_anno_list_by_saddr(msk, addr, false) && READ_ONCE(pm->wo= rk_pending)) mptcp_pm_schedule_work(msk, MPTCP_PM_SUBFLOW_ESTABLISHED); =20 spin_unlock_bh(&pm->lock); diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 599137001148..af915ba3dff5 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -203,14 +203,15 @@ bool mptcp_pm_nl_check_work_pending(struct mptcp_sock= *msk) =20 struct mptcp_pm_add_entry * mptcp_lookup_anno_list_by_saddr(const struct mptcp_sock *msk, - const struct mptcp_addr_info *addr) + const struct mptcp_addr_info *addr, + bool check_id) { struct mptcp_pm_add_entry *entry; =20 lockdep_assert_held(&msk->pm.lock); =20 list_for_each_entry(entry, &msk->pm.anno_list, list) { - if (mptcp_addresses_equal(&entry->addr, addr, true, false)) + if (mptcp_addresses_equal(&entry->addr, addr, true, check_id)) return entry; } =20 @@ -290,12 +291,12 @@ mptcp_pm_del_add_timer(struct mptcp_sock *msk, struct sock *sk =3D (struct sock *)msk; =20 spin_lock_bh(&msk->pm.lock); - entry =3D mptcp_lookup_anno_list_by_saddr(msk, addr); - if (entry && (!check_id || entry->addr.id =3D=3D addr->id)) + entry =3D mptcp_lookup_anno_list_by_saddr(msk, addr, check_id); + if (entry) entry->retrans_times =3D ADD_ADDR_RETRANS_MAX; spin_unlock_bh(&msk->pm.lock); =20 - if (entry && (!check_id || entry->addr.id =3D=3D addr->id)) + if (entry) sk_stop_timer_sync(sk, &entry->add_timer); =20 return entry; @@ -310,7 +311,7 @@ bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk, =20 lockdep_assert_held(&msk->pm.lock); =20 - add_entry =3D mptcp_lookup_anno_list_by_saddr(msk, addr); + add_entry =3D mptcp_lookup_anno_list_by_saddr(msk, addr, false); 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charset="utf-8" This patch adds a new helper mptcp_userspace_pm_get_entry() to find out the address entry on the userspace_pm_local_addr_list through the given address. Use this helper in mptcp_userspace_pm_delete_local_addr(). Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 35 ++++++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 11 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 58e9ba51ad36..71c47fca375c 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -39,6 +39,20 @@ mptcp_userspace_pm_lookup_addr_by_id(struct mptcp_sock *= msk, unsigned int id) return NULL; } =20 +static struct mptcp_pm_addr_entry *mptcp_userspace_pm_get_entry(struct mpt= cp_sock *msk, + struct mptcp_addr_info *addr, + bool use_port, bool use_id) +{ + struct mptcp_pm_addr_entry *entry; + + list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) { + if (mptcp_addresses_equal(&entry->addr, addr, use_port, use_id)) + return entry; + } + + return NULL; +} + static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *entry) { @@ -100,18 +114,17 @@ static int mptcp_userspace_pm_append_new_local_addr(s= truct mptcp_sock *msk, static int mptcp_userspace_pm_delete_local_addr(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *addr) { - struct mptcp_pm_addr_entry *entry, *tmp; 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charset="utf-8" This patch uses the newly defined helper mptcp_userspace_pm_get_entry() in mptcp_userspace_pm_append_new_local_addr(), and drop local variables addr_match and id_match to simplify the code. Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 26 ++++++++------------------ 1 file changed, 8 insertions(+), 18 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 71c47fca375c..994f2bfd74be 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -59,26 +59,13 @@ static int mptcp_userspace_pm_append_new_local_addr(str= uct mptcp_sock *msk, struct pm_nl_pernet *pernet =3D pm_nl_get_pernet_from_msk(msk); struct mptcp_pm_addr_entry *match =3D NULL; struct sock *sk =3D (struct sock *)msk; - struct mptcp_pm_addr_entry *e; - bool addr_match =3D false; - bool id_match =3D false; int ret =3D -EINVAL; =20 spin_lock_bh(&msk->pm.lock); - list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) { - addr_match =3D mptcp_addresses_equal(&e->addr, &entry->addr, true, false= ); - if (addr_match && entry->addr.id =3D=3D 0) - entry->addr.id =3D e->addr.id; - id_match =3D (e->addr.id =3D=3D entry->addr.id); - if (addr_match && id_match) { - match =3D e; 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charset="utf-8" In some cases, the address entry doesn't need to be freed. This patch dups an entry into the free_list to separate removing an address from freeing an entry, so that the refcount of address entry can be added later. Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 994f2bfd74be..e2f11e821214 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -303,10 +303,18 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, stru= ct genl_info *info) goto out; } =20 - list_move(&match->list, &free_list); + entry =3D kmemdup(match, sizeof(*match), GFP_ATOMIC); + if (!entry) { + err =3D -ENOMEM; + goto out; + } + list_add(&entry->list, &free_list); =20 mptcp_pm_remove_addrs(msk, &free_list); =20 + list_del_rcu(&match->list); + kfree(match); + release_sock(sk); =20 list_for_each_entry_safe(match, entry, &free_list, list) { --=20 2.35.3 From nobody Sat May 18 23:55:23 2024 Received: from EUR01-VE1-obe.outbound.protection.outlook.com (mail-ve1eur01on2079.outbound.protection.outlook.com [40.107.14.79]) (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 D376F847E for ; 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charset="utf-8" This patch adds the refcount of addree entry in userspace PM. Add a new counter 'refcnt' in struct mptcp_pm_addr_entry, initiated to 1. Increase this counter when an address is announced or a subflow is created in mptcp_pm_nl_announce_doit() and mptcp_pm_nl_subflow_create_doit(). And decrease it when an address is removed or a subflow is closed in mptcp_pm_nl_remove_doit() and mptcp_userspace_pm_delete_local_addr(). If the counter reaches to 1, free this entry. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/403 Fixes: 24430f8bf516 ("mptcp: add address into userspace pm list") Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 33 +++++++++++++++++++++++---------- net/mptcp/protocol.h | 2 ++ 2 files changed, 25 insertions(+), 10 deletions(-) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index e2f11e821214..f93eaf1b2338 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -83,6 +83,7 @@ static int mptcp_userspace_pm_append_new_local_addr(struc= t mptcp_sock *msk, __set_bit(e->addr.id, pernet->id_bitmap); list_add_tail_rcu(&e->list, &msk->pm.userspace_pm_local_addr_list); msk->pm.local_addr_used++; + refcount_set(&e->refcnt, 1); ret =3D e->addr.id; goto append_err; } @@ -108,12 +109,11 @@ static int mptcp_userspace_pm_delete_local_addr(struc= t mptcp_sock *msk, =20 entry =3D mptcp_userspace_pm_get_entry(msk, &addr->addr, false, false); if (entry) { - /* TODO: a refcount is needed because the entry can - * be used multiple times (e.g. fullmesh mode). - */ - list_del_rcu(&entry->list); - kfree(entry); - msk->pm.local_addr_used--; + if (!refcount_dec_not_one(&entry->refcnt)) { + list_del_rcu(&entry->list); + kfree(entry); + msk->pm.local_addr_used--; + } return 0; } =20 @@ -207,6 +207,11 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, str= uct genl_info *info) spin_lock_bh(&msk->pm.lock); =20 if (mptcp_pm_alloc_anno_list(msk, &addr_val.addr)) { + struct mptcp_pm_addr_entry *entry; + + entry =3D mptcp_userspace_pm_get_entry(msk, &addr_val.addr, false, false= ); + if (entry && !refcount_inc_not_zero(&entry->refcnt)) + pr_debug("userspace uninitalized entry"); msk->pm.add_addr_signaled++; mptcp_pm_announce_addr(msk, &addr_val.addr, false); mptcp_pm_nl_addr_send_ack(msk); @@ -312,8 +317,10 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struc= t genl_info *info) =20 mptcp_pm_remove_addrs(msk, &free_list); =20 - list_del_rcu(&match->list); - kfree(match); + if (!refcount_dec_not_one(&match->refcnt)) { + list_del_rcu(&match->list); + kfree(match); + } =20 release_sock(sk); 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charset="utf-8" Previously, when deleting a userspace address and subflow, it was necessary to follow the current order of deleting the address and then deleting the subflow. With this series of changes, addresses and subflows can be deleted in any order. This patch uses random numbers to add this type of tests. Signed-off-by: Geliang Tang --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testin= g/selftests/net/mptcp/mptcp_join.sh index ada523c160ad..e7560c6f9e3b 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -3413,8 +3413,13 @@ userspace_tests() chk_mptcp_info subflows 1 subflows 1 chk_subflows_total 2 2 chk_mptcp_info add_addr_signal 1 add_addr_accepted 1 - userspace_pm_rm_addr $ns1 10 - userspace_pm_rm_sf $ns1 "::ffff:10.0.2.1" $SUB_ESTABLISHED + local rm_addr=3D"userspace_pm_rm_addr $ns1 10" + local rm_sf=3D"userspace_pm_rm_sf $ns1 ::ffff:10.0.2.1 $SUB_ESTABLISHED" + if [ $((RANDOM%2)) -eq 0 ]; then + $($rm_addr); $($rm_sf) + else + $($rm_sf); $($rm_addr) + fi chk_rm_nr 1 1 invert chk_mptcp_info subflows 0 subflows 0 chk_subflows_total 1 1 --=20 2.35.3