From 8ef81c65485b94c59b8ae43ed7d1d75c3562a835 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 20 Oct 2017 22:24:18 -0700 Subject: [PATCH] netfilter: ipvs: Convert timers to use timer_setup() In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Wensong Zhang Cc: Simon Horman Cc: Julian Anastasov Cc: Pablo Neira Ayuso Cc: Jozsef Kadlecsik Cc: Florian Westphal Cc: "David S. Miller" Cc: netdev@vger.kernel.org Cc: lvs-devel@vger.kernel.org Cc: netfilter-devel@vger.kernel.org Cc: coreteam@netfilter.org Signed-off-by: Kees Cook Acked-by: Julian Anastasov Acked-by: Simon Horman --- net/netfilter/ipvs/ip_vs_conn.c | 10 +++++----- net/netfilter/ipvs/ip_vs_ctl.c | 7 +++---- net/netfilter/ipvs/ip_vs_est.c | 6 +++--- net/netfilter/ipvs/ip_vs_lblc.c | 11 ++++++----- net/netfilter/ipvs/ip_vs_lblcr.c | 11 ++++++----- 5 files changed, 23 insertions(+), 22 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c index 3d2ac71a83ec..3a43b3470331 100644 --- a/net/netfilter/ipvs/ip_vs_conn.c +++ b/net/netfilter/ipvs/ip_vs_conn.c @@ -104,7 +104,7 @@ static inline void ct_write_unlock_bh(unsigned int key) spin_unlock_bh(&__ip_vs_conntbl_lock_array[key&CT_LOCKARRAY_MASK].l); } -static void ip_vs_conn_expire(unsigned long data); +static void ip_vs_conn_expire(struct timer_list *t); /* * Returns hash value for IPVS connection entry @@ -457,7 +457,7 @@ EXPORT_SYMBOL_GPL(ip_vs_conn_out_get_proto); static void __ip_vs_conn_put_notimer(struct ip_vs_conn *cp) { __ip_vs_conn_put(cp); - ip_vs_conn_expire((unsigned long)cp); + ip_vs_conn_expire(&cp->timer); } /* @@ -817,9 +817,9 @@ static void ip_vs_conn_rcu_free(struct rcu_head *head) kmem_cache_free(ip_vs_conn_cachep, cp); } -static void ip_vs_conn_expire(unsigned long data) +static void ip_vs_conn_expire(struct timer_list *t) { - struct ip_vs_conn *cp = (struct ip_vs_conn *)data; + struct ip_vs_conn *cp = from_timer(cp, t, timer); struct netns_ipvs *ipvs = cp->ipvs; /* @@ -909,7 +909,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p, int dest_af, } INIT_HLIST_NODE(&cp->c_list); - setup_timer(&cp->timer, ip_vs_conn_expire, (unsigned long)cp); + timer_setup(&cp->timer, ip_vs_conn_expire, 0); cp->ipvs = ipvs; cp->af = p->af; cp->daf = dest_af; diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 4f940d7eb2f7..b47e266c6eca 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1146,9 +1146,9 @@ ip_vs_del_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) return 0; } -static void ip_vs_dest_trash_expire(unsigned long data) +static void ip_vs_dest_trash_expire(struct timer_list *t) { - struct netns_ipvs *ipvs = (struct netns_ipvs *)data; + struct netns_ipvs *ipvs = from_timer(ipvs, t, dest_trash_timer); struct ip_vs_dest *dest, *next; unsigned long now = jiffies; @@ -4019,8 +4019,7 @@ int __net_init ip_vs_control_net_init(struct netns_ipvs *ipvs) INIT_LIST_HEAD(&ipvs->dest_trash); spin_lock_init(&ipvs->dest_trash_lock); - setup_timer(&ipvs->dest_trash_timer, ip_vs_dest_trash_expire, - (unsigned long) ipvs); + timer_setup(&ipvs->dest_trash_timer, ip_vs_dest_trash_expire, 0); atomic_set(&ipvs->ftpsvc_counter, 0); atomic_set(&ipvs->nullsvc_counter, 0); atomic_set(&ipvs->conn_out_counter, 0); diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c index 457c6c193e13..489055091a9b 100644 --- a/net/netfilter/ipvs/ip_vs_est.c +++ b/net/netfilter/ipvs/ip_vs_est.c @@ -97,12 +97,12 @@ static void ip_vs_read_cpu_stats(struct ip_vs_kstats *sum, } -static void estimation_timer(unsigned long arg) +static void estimation_timer(struct timer_list *t) { struct ip_vs_estimator *e; struct ip_vs_stats *s; u64 rate; - struct netns_ipvs *ipvs = (struct netns_ipvs *)arg; + struct netns_ipvs *ipvs = from_timer(ipvs, t, est_timer); spin_lock(&ipvs->est_lock); list_for_each_entry(e, &ipvs->est_list, list) { @@ -192,7 +192,7 @@ int __net_init ip_vs_estimator_net_init(struct netns_ipvs *ipvs) { INIT_LIST_HEAD(&ipvs->est_list); spin_lock_init(&ipvs->est_lock); - setup_timer(&ipvs->est_timer, estimation_timer, (unsigned long)ipvs); + timer_setup(&ipvs->est_timer, estimation_timer, 0); mod_timer(&ipvs->est_timer, jiffies + 2 * HZ); return 0; } diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c index b6aa4a970c6e..d625179de485 100644 --- a/net/netfilter/ipvs/ip_vs_lblc.c +++ b/net/netfilter/ipvs/ip_vs_lblc.c @@ -106,6 +106,7 @@ struct ip_vs_lblc_table { struct rcu_head rcu_head; struct hlist_head bucket[IP_VS_LBLC_TAB_SIZE]; /* hash bucket */ struct timer_list periodic_timer; /* collect stale entries */ + struct ip_vs_service *svc; /* pointer back to service */ atomic_t entries; /* number of entries */ int max_size; /* maximum size of entries */ int rover; /* rover for expire check */ @@ -294,10 +295,10 @@ static inline void ip_vs_lblc_full_check(struct ip_vs_service *svc) * of the table. * The full expiration check is for this purpose now. */ -static void ip_vs_lblc_check_expire(unsigned long data) +static void ip_vs_lblc_check_expire(struct timer_list *t) { - struct ip_vs_service *svc = (struct ip_vs_service *) data; - struct ip_vs_lblc_table *tbl = svc->sched_data; + struct ip_vs_lblc_table *tbl = from_timer(tbl, t, periodic_timer); + struct ip_vs_service *svc = tbl->svc; unsigned long now = jiffies; int goal; int i, j; @@ -369,12 +370,12 @@ static int ip_vs_lblc_init_svc(struct ip_vs_service *svc) tbl->rover = 0; tbl->counter = 1; tbl->dead = 0; + tbl->svc = svc; /* * Hook periodic timer for garbage collection */ - setup_timer(&tbl->periodic_timer, ip_vs_lblc_check_expire, - (unsigned long)svc); + timer_setup(&tbl->periodic_timer, ip_vs_lblc_check_expire, 0); mod_timer(&tbl->periodic_timer, jiffies + CHECK_EXPIRE_INTERVAL); return 0; diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c index c13ff575f9f7..84c57b62a588 100644 --- a/net/netfilter/ipvs/ip_vs_lblcr.c +++ b/net/netfilter/ipvs/ip_vs_lblcr.c @@ -278,6 +278,7 @@ struct ip_vs_lblcr_table { atomic_t entries; /* number of entries */ int max_size; /* maximum size of entries */ struct timer_list periodic_timer; /* collect stale entries */ + struct ip_vs_service *svc; /* pointer back to service */ int rover; /* rover for expire check */ int counter; /* counter for no expire */ bool dead; @@ -458,10 +459,10 @@ static inline void ip_vs_lblcr_full_check(struct ip_vs_service *svc) * of the table. * The full expiration check is for this purpose now. */ -static void ip_vs_lblcr_check_expire(unsigned long data) +static void ip_vs_lblcr_check_expire(struct timer_list *t) { - struct ip_vs_service *svc = (struct ip_vs_service *) data; - struct ip_vs_lblcr_table *tbl = svc->sched_data; + struct ip_vs_lblcr_table *tbl = from_timer(tbl, t, periodic_timer); + struct ip_vs_service *svc = tbl->svc; unsigned long now = jiffies; int goal; int i, j; @@ -532,12 +533,12 @@ static int ip_vs_lblcr_init_svc(struct ip_vs_service *svc) tbl->rover = 0; tbl->counter = 1; tbl->dead = 0; + tbl->svc = svc; /* * Hook periodic timer for garbage collection */ - setup_timer(&tbl->periodic_timer, ip_vs_lblcr_check_expire, - (unsigned long)svc); + timer_setup(&tbl->periodic_timer, ip_vs_lblcr_check_expire, 0); mod_timer(&tbl->periodic_timer, jiffies + CHECK_EXPIRE_INTERVAL); return 0; -- 2.30.2