From 8cdb045632e5ee22854538619ac6f150eb0a4894 Mon Sep 17 00:00:00 2001 From: Tom Goff Date: Fri, 14 Aug 2009 16:33:56 -0700 Subject: gre: Fix MTU calculation for bound GRE tunnels The GRE header length should be subtracted when the tunnel MTU is calculated. This just corrects for the associativity change introduced by commit 42aa916265d740d66ac1f17290366e9494c884c2 ("gre: Move MTU setting out of ipgre_tunnel_bind_dev"). Signed-off-by: Tom Goff Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index cb4a0f4bd5e5..82c11dd10a62 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -951,7 +951,7 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev) addend += 4; } dev->needed_headroom = addend + hlen; - mtu -= dev->hard_header_len - addend; + mtu -= dev->hard_header_len + addend; if (mtu < 68) mtu = 68; -- cgit v1.2.3 From 523d2f6982136d332c9b7dd00e9e16da1091f060 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 1 Jul 2009 21:26:43 +0200 Subject: mac80211: fix todo lock The key todo lock can be taken from different locks that require it to be _bh to avoid lock inversion due to (soft)irqs. This should fix the two problems reported by Bob and Gabor: http://mid.gmane.org/20090619113049.GB18956@hash.localnet http://mid.gmane.org/4A3FA376.8020307@openwrt.org Signed-off-by: Johannes Berg Cc: Bob Copeland Cc: Gabor Juhos Signed-off-by: John W. Linville --- net/mac80211/key.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) (limited to 'net') diff --git a/net/mac80211/key.c b/net/mac80211/key.c index ce267565e180..659a42d529e3 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -67,6 +67,8 @@ static DECLARE_WORK(todo_work, key_todo); * * @key: key to add to do item for * @flag: todo flag(s) + * + * Must be called with IRQs or softirqs disabled. */ static void add_todo(struct ieee80211_key *key, u32 flag) { @@ -140,9 +142,9 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key) ret = drv_set_key(key->local, SET_KEY, &sdata->vif, sta, &key->conf); if (!ret) { - spin_lock(&todo_lock); + spin_lock_bh(&todo_lock); key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); } if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP) @@ -164,12 +166,12 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) if (!key || !key->local->ops->set_key) return; - spin_lock(&todo_lock); + spin_lock_bh(&todo_lock); if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) { - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); return; } - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); sta = get_sta_for_key(key); sdata = key->sdata; @@ -188,9 +190,9 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) wiphy_name(key->local->hw.wiphy), key->conf.keyidx, sta ? sta->addr : bcast_addr, ret); - spin_lock(&todo_lock); + spin_lock_bh(&todo_lock); key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); } static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, @@ -437,14 +439,14 @@ void ieee80211_key_link(struct ieee80211_key *key, __ieee80211_key_replace(sdata, sta, old_key, key); - spin_unlock_irqrestore(&sdata->local->key_lock, flags); - /* free old key later */ add_todo(old_key, KEY_FLAG_TODO_DELETE); add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS); if (netif_running(sdata->dev)) add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD); + + spin_unlock_irqrestore(&sdata->local->key_lock, flags); } static void __ieee80211_key_free(struct ieee80211_key *key) @@ -547,7 +549,7 @@ static void __ieee80211_key_todo(void) */ synchronize_rcu(); - spin_lock(&todo_lock); + spin_lock_bh(&todo_lock); while (!list_empty(&todo_list)) { key = list_first_entry(&todo_list, struct ieee80211_key, todo); list_del_init(&key->todo); @@ -558,7 +560,7 @@ static void __ieee80211_key_todo(void) KEY_FLAG_TODO_HWACCEL_REMOVE | KEY_FLAG_TODO_DELETE); key->flags &= ~todoflags; - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); work_done = false; @@ -591,9 +593,9 @@ static void __ieee80211_key_todo(void) WARN_ON(!work_done); - spin_lock(&todo_lock); + spin_lock_bh(&todo_lock); } - spin_unlock(&todo_lock); + spin_unlock_bh(&todo_lock); } void ieee80211_key_todo(void) -- cgit v1.2.3 From c6ba973b8fa97422aab4204f7d79f1d413cde925 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Mon, 17 Aug 2009 18:05:32 -0700 Subject: NETROM: Fix use of static buffer The static variable used by nr_call_to_digi might result in corruption if multiple threads are trying to usee a node or neighbour via ioctl. Fixed by having the caller pass a structure in. This is safe because nr_add_node rsp. nr_add_neigh will allocate a permanent structure, if needed. Signed-off-by: Ralf Baechle Signed-off-by: David S. Miller --- net/netrom/nr_route.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'net') diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index e943c16552a2..4eb1ac9a7679 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -630,23 +630,23 @@ out: return dev; } -static ax25_digi *nr_call_to_digi(int ndigis, ax25_address *digipeaters) +static ax25_digi *nr_call_to_digi(ax25_digi *digi, int ndigis, + ax25_address *digipeaters) { - static ax25_digi ax25_digi; int i; if (ndigis == 0) return NULL; for (i = 0; i < ndigis; i++) { - ax25_digi.calls[i] = digipeaters[i]; - ax25_digi.repeated[i] = 0; + digi->calls[i] = digipeaters[i]; + digi->repeated[i] = 0; } - ax25_digi.ndigi = ndigis; - ax25_digi.lastrepeat = -1; + digi->ndigi = ndigis; + digi->lastrepeat = -1; - return &ax25_digi; + return digi; } /* @@ -656,6 +656,7 @@ int nr_rt_ioctl(unsigned int cmd, void __user *arg) { struct nr_route_struct nr_route; struct net_device *dev; + ax25_digi digi; int ret; switch (cmd) { @@ -673,13 +674,15 @@ int nr_rt_ioctl(unsigned int cmd, void __user *arg) ret = nr_add_node(&nr_route.callsign, nr_route.mnemonic, &nr_route.neighbour, - nr_call_to_digi(nr_route.ndigis, nr_route.digipeaters), + nr_call_to_digi(&digi, nr_route.ndigis, + nr_route.digipeaters), dev, nr_route.quality, nr_route.obs_count); break; case NETROM_NEIGH: ret = nr_add_neigh(&nr_route.callsign, - nr_call_to_digi(nr_route.ndigis, nr_route.digipeaters), + nr_call_to_digi(&digi, nr_route.ndigis, + nr_route.digipeaters), dev, nr_route.quality); break; default: -- cgit v1.2.3 From c1a8f1f1c8e01eab5862c8db39b49ace814e6c66 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 16 Aug 2009 09:36:49 +0000 Subject: net: restore gnet_stats_basic to previous definition In 5e140dfc1fe87eae27846f193086724806b33c7d "net: reorder struct Qdisc for better SMP performance" the definition of struct gnet_stats_basic changed incompatibly, as copies of this struct are shipped to userland via netlink. Restoring old behavior is not welcome, for performance reason. Fix is to use a private structure for kernel, and teach gnet_stats_copy_basic() to convert from kernel to user land, using legacy structure (struct gnet_stats_basic) Based on a report and initial patch from Michael Spang. Reported-by: Michael Spang Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/gen_stats.h | 5 +++++ include/net/act_api.h | 2 +- include/net/gen_stats.h | 10 +++++----- include/net/netfilter/xt_rateest.h | 2 +- include/net/sch_generic.h | 2 +- net/core/gen_estimator.c | 12 ++++++------ net/core/gen_stats.c | 11 ++++++++--- net/netfilter/xt_RATEEST.c | 2 +- net/sched/sch_atm.c | 2 +- net/sched/sch_cbq.c | 2 +- net/sched/sch_drr.c | 2 +- net/sched/sch_hfsc.c | 2 +- net/sched/sch_htb.c | 2 +- 13 files changed, 33 insertions(+), 23 deletions(-) (limited to 'net') diff --git a/include/linux/gen_stats.h b/include/linux/gen_stats.h index 0ffa41df0ee8..710e901085d0 100644 --- a/include/linux/gen_stats.h +++ b/include/linux/gen_stats.h @@ -19,6 +19,11 @@ enum { * @packets: number of seen packets */ struct gnet_stats_basic +{ + __u64 bytes; + __u32 packets; +}; +struct gnet_stats_basic_packed { __u64 bytes; __u32 packets; diff --git a/include/net/act_api.h b/include/net/act_api.h index 565eed8fe496..c05fd717c588 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -16,7 +16,7 @@ struct tcf_common { u32 tcfc_capab; int tcfc_action; struct tcf_t tcfc_tm; - struct gnet_stats_basic tcfc_bstats; + struct gnet_stats_basic_packed tcfc_bstats; struct gnet_stats_queue tcfc_qstats; struct gnet_stats_rate_est tcfc_rate_est; spinlock_t tcfc_lock; diff --git a/include/net/gen_stats.h b/include/net/gen_stats.h index d136b5240ef2..c1488553e349 100644 --- a/include/net/gen_stats.h +++ b/include/net/gen_stats.h @@ -28,7 +28,7 @@ extern int gnet_stats_start_copy_compat(struct sk_buff *skb, int type, spinlock_t *lock, struct gnet_dump *d); extern int gnet_stats_copy_basic(struct gnet_dump *d, - struct gnet_stats_basic *b); + struct gnet_stats_basic_packed *b); extern int gnet_stats_copy_rate_est(struct gnet_dump *d, struct gnet_stats_rate_est *r); extern int gnet_stats_copy_queue(struct gnet_dump *d, @@ -37,14 +37,14 @@ extern int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len); extern int gnet_stats_finish_copy(struct gnet_dump *d); -extern int gen_new_estimator(struct gnet_stats_basic *bstats, +extern int gen_new_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est, spinlock_t *stats_lock, struct nlattr *opt); -extern void gen_kill_estimator(struct gnet_stats_basic *bstats, +extern void gen_kill_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est); -extern int gen_replace_estimator(struct gnet_stats_basic *bstats, +extern int gen_replace_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est, spinlock_t *stats_lock, struct nlattr *opt); -extern bool gen_estimator_active(const struct gnet_stats_basic *bstats, +extern bool gen_estimator_active(const struct gnet_stats_basic_packed *bstats, const struct gnet_stats_rate_est *rate_est); #endif diff --git a/include/net/netfilter/xt_rateest.h b/include/net/netfilter/xt_rateest.h index 65d594dffbff..ddbf37e19616 100644 --- a/include/net/netfilter/xt_rateest.h +++ b/include/net/netfilter/xt_rateest.h @@ -8,7 +8,7 @@ struct xt_rateest { spinlock_t lock; struct gnet_estimator params; struct gnet_stats_rate_est rstats; - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; }; extern struct xt_rateest *xt_rateest_lookup(const char *name); diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 964ffa0d8815..5482e9582f55 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -72,7 +72,7 @@ struct Qdisc */ unsigned long state; struct sk_buff_head q; - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; }; diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 78e5bfc454ae..493775f4f2f1 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -81,7 +81,7 @@ struct gen_estimator { struct list_head list; - struct gnet_stats_basic *bstats; + struct gnet_stats_basic_packed *bstats; struct gnet_stats_rate_est *rate_est; spinlock_t *stats_lock; int ewma_log; @@ -165,7 +165,7 @@ static void gen_add_node(struct gen_estimator *est) } static -struct gen_estimator *gen_find_node(const struct gnet_stats_basic *bstats, +struct gen_estimator *gen_find_node(const struct gnet_stats_basic_packed *bstats, const struct gnet_stats_rate_est *rate_est) { struct rb_node *p = est_root.rb_node; @@ -202,7 +202,7 @@ struct gen_estimator *gen_find_node(const struct gnet_stats_basic *bstats, * * NOTE: Called under rtnl_mutex */ -int gen_new_estimator(struct gnet_stats_basic *bstats, +int gen_new_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est, spinlock_t *stats_lock, struct nlattr *opt) @@ -262,7 +262,7 @@ static void __gen_kill_estimator(struct rcu_head *head) * * NOTE: Called under rtnl_mutex */ -void gen_kill_estimator(struct gnet_stats_basic *bstats, +void gen_kill_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est) { struct gen_estimator *e; @@ -292,7 +292,7 @@ EXPORT_SYMBOL(gen_kill_estimator); * * Returns 0 on success or a negative error code. */ -int gen_replace_estimator(struct gnet_stats_basic *bstats, +int gen_replace_estimator(struct gnet_stats_basic_packed *bstats, struct gnet_stats_rate_est *rate_est, spinlock_t *stats_lock, struct nlattr *opt) { @@ -308,7 +308,7 @@ EXPORT_SYMBOL(gen_replace_estimator); * * Returns true if estimator is active, and false if not. */ -bool gen_estimator_active(const struct gnet_stats_basic *bstats, +bool gen_estimator_active(const struct gnet_stats_basic_packed *bstats, const struct gnet_stats_rate_est *rate_est) { ASSERT_RTNL(); diff --git a/net/core/gen_stats.c b/net/core/gen_stats.c index c3d0ffeac243..8569310268ab 100644 --- a/net/core/gen_stats.c +++ b/net/core/gen_stats.c @@ -106,16 +106,21 @@ gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock, * if the room in the socket buffer was not sufficient. */ int -gnet_stats_copy_basic(struct gnet_dump *d, struct gnet_stats_basic *b) +gnet_stats_copy_basic(struct gnet_dump *d, struct gnet_stats_basic_packed *b) { if (d->compat_tc_stats) { d->tc_stats.bytes = b->bytes; d->tc_stats.packets = b->packets; } - if (d->tail) - return gnet_stats_copy(d, TCA_STATS_BASIC, b, sizeof(*b)); + if (d->tail) { + struct gnet_stats_basic sb; + memset(&sb, 0, sizeof(sb)); + sb.bytes = b->bytes; + sb.packets = b->packets; + return gnet_stats_copy(d, TCA_STATS_BASIC, &sb, sizeof(sb)); + } return 0; } diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c index 43f5676b1af4..d80b8192e0d4 100644 --- a/net/netfilter/xt_RATEEST.c +++ b/net/netfilter/xt_RATEEST.c @@ -74,7 +74,7 @@ static unsigned int xt_rateest_tg(struct sk_buff *skb, const struct xt_target_param *par) { const struct xt_rateest_target_info *info = par->targinfo; - struct gnet_stats_basic *stats = &info->est->bstats; + struct gnet_stats_basic_packed *stats = &info->est->bstats; spin_lock_bh(&info->est->lock); stats->bytes += skb->len; diff --git a/net/sched/sch_atm.c b/net/sched/sch_atm.c index 2a8b83af7c47..ab82f145f689 100644 --- a/net/sched/sch_atm.c +++ b/net/sched/sch_atm.c @@ -49,7 +49,7 @@ struct atm_flow_data { struct socket *sock; /* for closing */ u32 classid; /* x:y type ID */ int ref; /* reference count */ - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct atm_flow_data *next; struct atm_flow_data *excess; /* flow for excess traffic; diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 23a167670fd5..d5798e17a832 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -128,7 +128,7 @@ struct cbq_class long avgidle; long deficit; /* Saved deficit for WRR */ psched_time_t penalized; - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est rate_est; struct tc_cbq_xstats xstats; diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c index 7597fe146866..12b2fb04b29b 100644 --- a/net/sched/sch_drr.c +++ b/net/sched/sch_drr.c @@ -22,7 +22,7 @@ struct drr_class { unsigned int refcnt; unsigned int filter_cnt; - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est rate_est; struct list_head alist; diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index 362c2811b2df..dad0144423da 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -116,7 +116,7 @@ struct hfsc_class struct Qdisc_class_common cl_common; unsigned int refcnt; /* usage count */ - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est rate_est; unsigned int level; /* class level in hierarchy */ diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 88cd02626621..ec4d46399d59 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -74,7 +74,7 @@ enum htb_cmode { struct htb_class { struct Qdisc_class_common common; /* general class parameters */ - struct gnet_stats_basic bstats; + struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est rate_est; struct tc_htb_xstats xstats; /* our special stats */ -- cgit v1.2.3 From ee5f9757ea17759e1ce5503bdae2b07e48e32af9 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 21 Aug 2009 16:33:34 -0700 Subject: pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer None of this stuff should execute in hw IRQ context, therefore use a tasklet_hrtimer so that it runs in softirq context. Signed-off-by: David S. Miller Acked-by: Thomas Gleixner --- include/net/pkt_sched.h | 4 ++-- net/sched/sch_api.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'net') diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 82a3191375f5..7eafb8d54470 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -61,8 +61,8 @@ psched_tdiff_bounded(psched_time_t tv1, psched_time_t tv2, psched_time_t bound) } struct qdisc_watchdog { - struct hrtimer timer; - struct Qdisc *qdisc; + struct tasklet_hrtimer timer; + struct Qdisc *qdisc; }; extern void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc); diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 24d17ce9c294..e1c2bf7e9ba4 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -468,8 +468,8 @@ static enum hrtimer_restart qdisc_watchdog(struct hrtimer *timer) void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc) { - hrtimer_init(&wd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); - wd->timer.function = qdisc_watchdog; + tasklet_hrtimer_init(&wd->timer, qdisc_watchdog, + CLOCK_MONOTONIC, HRTIMER_MODE_ABS); wd->qdisc = qdisc; } EXPORT_SYMBOL(qdisc_watchdog_init); @@ -485,13 +485,13 @@ void qdisc_watchdog_schedule(struct qdisc_watchdog *wd, psched_time_t expires) wd->qdisc->flags |= TCQ_F_THROTTLED; time = ktime_set(0, 0); time = ktime_add_ns(time, PSCHED_TICKS2NS(expires)); - hrtimer_start(&wd->timer, time, HRTIMER_MODE_ABS); + tasklet_hrtimer_start(&wd->timer, time, HRTIMER_MODE_ABS); } EXPORT_SYMBOL(qdisc_watchdog_schedule); void qdisc_watchdog_cancel(struct qdisc_watchdog *wd) { - hrtimer_cancel(&wd->timer); + tasklet_hrtimer_cancel(&wd->timer); wd->qdisc->flags &= ~TCQ_F_THROTTLED; } EXPORT_SYMBOL(qdisc_watchdog_cancel); -- cgit v1.2.3 From 38acce2d7983632100a9ff3fd20295f6e34074a8 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 21 Aug 2009 16:51:38 -0700 Subject: pkt_sched: Convert CBQ to tasklet_hrtimer. This code expects to run in softirq context, and bare hrtimers run in hw IRQ context. Signed-off-by: David S. Miller Acked-by: Thomas Gleixner --- net/sched/sch_cbq.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'net') diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index d5798e17a832..81652d6ccd36 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -163,7 +163,7 @@ struct cbq_sched_data psched_time_t now_rt; /* Cached real time */ unsigned pmask; - struct hrtimer delay_timer; + struct tasklet_hrtimer delay_timer; struct qdisc_watchdog watchdog; /* Watchdog timer, started when CBQ has backlog, but cannot @@ -503,6 +503,8 @@ static void cbq_ovl_delay(struct cbq_class *cl) cl->undertime = q->now + delay; if (delay > 0) { + struct hrtimer *ht; + sched += delay + cl->penalty; cl->penalized = sched; cl->cpriority = TC_CBQ_MAXPRIO; @@ -510,12 +512,12 @@ static void cbq_ovl_delay(struct cbq_class *cl) expires = ktime_set(0, 0); expires = ktime_add_ns(expires, PSCHED_TICKS2NS(sched)); - if (hrtimer_try_to_cancel(&q->delay_timer) && - ktime_to_ns(ktime_sub( - hrtimer_get_expires(&q->delay_timer), - expires)) > 0) - hrtimer_set_expires(&q->delay_timer, expires); - hrtimer_restart(&q->delay_timer); + ht = &q->delay_timer.timer; + if (hrtimer_try_to_cancel(ht) && + ktime_to_ns(ktime_sub(hrtimer_get_expires(ht), + expires)) > 0) + hrtimer_set_expires(ht, expires); + hrtimer_restart(ht); cl->delayed = 1; cl->xstats.overactions++; return; @@ -621,7 +623,7 @@ static enum hrtimer_restart cbq_undelay(struct hrtimer *timer) time = ktime_set(0, 0); time = ktime_add_ns(time, PSCHED_TICKS2NS(now + delay)); - hrtimer_start(&q->delay_timer, time, HRTIMER_MODE_ABS); + tasklet_hrtimer_start(&q->delay_timer, time, HRTIMER_MODE_ABS); } sch->flags &= ~TCQ_F_THROTTLED; @@ -1214,7 +1216,7 @@ cbq_reset(struct Qdisc* sch) q->tx_class = NULL; q->tx_borrowed = NULL; qdisc_watchdog_cancel(&q->watchdog); - hrtimer_cancel(&q->delay_timer); + tasklet_hrtimer_cancel(&q->delay_timer); q->toplevel = TC_CBQ_MAXLEVEL; q->now = psched_get_time(); q->now_rt = q->now; @@ -1397,7 +1399,8 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt) q->link.minidle = -0x7FFFFFFF; qdisc_watchdog_init(&q->watchdog, sch); - hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + tasklet_hrtimer_init(&q->delay_timer, cbq_undelay, + CLOCK_MONOTONIC, HRTIMER_MODE_ABS); q->delay_timer.function = cbq_undelay; q->toplevel = TC_CBQ_MAXLEVEL; q->now = psched_get_time(); -- cgit v1.2.3 From ca6982b858e1d08010c1d29d8e8255b2ac2ad70a Mon Sep 17 00:00:00 2001 From: Bruno Prémont Date: Sun, 23 Aug 2009 19:06:28 -0700 Subject: ipv6: Fix commit 63d9950b08184e6531adceb65f64b429909cc101 (ipv6: Make v4-mapped bindings consistent with IPv4) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 63d9950b08184e6531adceb65f64b429909cc101 (ipv6: Make v4-mapped bindings consistent with IPv4) changes behavior of inet6_bind() for v4-mapped addresses so it should behave the same way as inet_bind(). During this change setting of err to -EADDRNOTAVAIL got lost: af_inet.c:469 inet_bind() err = -EADDRNOTAVAIL; if (!sysctl_ip_nonlocal_bind && !(inet->freebind || inet->transparent) && addr->sin_addr.s_addr != htonl(INADDR_ANY) && chk_addr_ret != RTN_LOCAL && chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) goto out; af_inet6.c:463 inet6_bind() if (addr_type == IPV6_ADDR_MAPPED) { int chk_addr_ret; /* Binding to v4-mapped address on a v6-only socket * makes no sense */ if (np->ipv6only) { err = -EINVAL; goto out; } /* Reproduce AF_INET checks to make the bindings consitant */ v4addr = addr->sin6_addr.s6_addr32[3]; chk_addr_ret = inet_addr_type(net, v4addr); if (!sysctl_ip_nonlocal_bind && !(inet->freebind || inet->transparent) && v4addr != htonl(INADDR_ANY) && chk_addr_ret != RTN_LOCAL && chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) goto out; } else { Signed-off-by Bruno Prémont Signed-off-by: David S. Miller --- net/ipv6/af_inet6.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'net') diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index caa0278d30a9..45f9a2a42d56 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -306,8 +306,10 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) v4addr != htonl(INADDR_ANY) && chk_addr_ret != RTN_LOCAL && chk_addr_ret != RTN_MULTICAST && - chk_addr_ret != RTN_BROADCAST) + chk_addr_ret != RTN_BROADCAST) { + err = -EADDRNOTAVAIL; goto out; + } } else { if (addr_type != IPV6_ADDR_ANY) { struct net_device *dev = NULL; -- cgit v1.2.3 From 2149f66f49ab07515666127bf5140c5c94677af8 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 20 Aug 2009 02:47:34 +0000 Subject: netfilter: xt_quota: fix wrong return value (error case) Success was indicated on a memory allocation failure, thereby causing a crash due to a later NULL deref. (Affects v2.6.30-rc1 up to here.) Signed-off-by: Jan Engelhardt Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/xt_quota.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/netfilter/xt_quota.c b/net/netfilter/xt_quota.c index 98fc190e8f0e..390b7d09fe51 100644 --- a/net/netfilter/xt_quota.c +++ b/net/netfilter/xt_quota.c @@ -52,7 +52,7 @@ static bool quota_mt_check(const struct xt_mtchk_param *par) q->master = kmalloc(sizeof(*q->master), GFP_KERNEL); if (q->master == NULL) - return -ENOMEM; + return false; q->master->quota = q->quota; return true; -- cgit v1.2.3 From 79b1bee888d43b14cf0c08fb8e5aa6cb161e48f8 Mon Sep 17 00:00:00 2001 From: Dongdong Deng Date: Fri, 21 Aug 2009 03:33:36 +0000 Subject: netpoll: warning for ndo_start_xmit returns with interrupts enabled WARN_ONCE for ndo_start_xmit() enable interrupts in netpoll_send_skb(), because the NETPOLL API requires that interrupts remain disabled in netpoll_send_skb(). Signed-off-by: Dongdong Deng Acked-by: Matt Mackall Signed-off-by: David S. Miller --- net/core/netpoll.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net') diff --git a/net/core/netpoll.c b/net/core/netpoll.c index df30feb2fc72..1b76eb11deb4 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -319,6 +319,11 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) udelay(USEC_PER_POLL); } + + WARN_ONCE(!irqs_disabled(), + "netpoll_send_skb(): %s enabled interrupts in poll (%pF)\n", + dev->name, ops->ndo_start_xmit); + local_irq_restore(flags); } -- cgit v1.2.3 From 28e9fc592cb8c7a43e4d3147b38be6032a0e81bc Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Sun, 23 Aug 2009 22:55:51 -0700 Subject: NET: llc, zero sockaddr_llc struct sllc_arphrd member of sockaddr_llc might not be changed. Zero sllc before copying to the above layer's structure. Signed-off-by: Jiri Slaby Signed-off-by: David S. Miller --- net/llc/af_llc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net') diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 9208cf5f2bd5..c45eee1c0e8d 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -914,6 +914,7 @@ static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr, struct llc_sock *llc = llc_sk(sk); int rc = 0; + memset(&sllc, 0, sizeof(sllc)); lock_sock(sk); if (sock_flag(sk, SOCK_ZAPPED)) goto out; -- cgit v1.2.3 From a2cb6a4dd470d7a64255a10b843b0d188416b78f Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 24 Aug 2009 19:37:05 -0700 Subject: pkt_sched: Fix bogon in tasklet_hrtimer changes. Reported by Stephen Rothwell, luckily it's harmless: net/sched/sch_api.c: In function 'qdisc_watchdog': net/sched/sch_api.c:460: warning: initialization from incompatible pointer type net/sched/sch_cbq.c: In function 'cbq_undelay': net/sched/sch_cbq.c:595: warning: initialization from incompatible pointer type Signed-off-by: David S. Miller --- net/sched/sch_api.c | 2 +- net/sched/sch_cbq.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index e1c2bf7e9ba4..92e6f3a52c13 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -458,7 +458,7 @@ EXPORT_SYMBOL(qdisc_warn_nonwc); static enum hrtimer_restart qdisc_watchdog(struct hrtimer *timer) { struct qdisc_watchdog *wd = container_of(timer, struct qdisc_watchdog, - timer); + timer.timer); wd->qdisc->flags &= ~TCQ_F_THROTTLED; __netif_schedule(qdisc_root(wd->qdisc)); diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 81652d6ccd36..149b0405c5ec 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -593,7 +593,7 @@ static psched_tdiff_t cbq_undelay_prio(struct cbq_sched_data *q, int prio, static enum hrtimer_restart cbq_undelay(struct hrtimer *timer) { struct cbq_sched_data *q = container_of(timer, struct cbq_sched_data, - delay_timer); + delay_timer.timer); struct Qdisc *sch = q->watchdog.qdisc; psched_time_t now; psched_tdiff_t delay = 0; -- cgit v1.2.3 From d66ee0587c3927aea5178a822976c7c853d815fe Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Sun, 30 Aug 2009 23:15:36 +0000 Subject: net: sk_free() should be allowed right after sk_alloc() After commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) sk_free() frees socks conditionally and depends on sk_wmem_alloc being set e.g. in sock_init_data(). But in some cases sk_free() is called earlier, usually after other alloc errors. Fix is to move sk_wmem_alloc initialization from sock_init_data() to sk_alloc() itself. Signed-off-by: Jarek Poplawski Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/core/sock.c b/net/core/sock.c index bbb25be7ddfe..76334228ed1c 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1025,6 +1025,7 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority, sk->sk_prot = sk->sk_prot_creator = prot; sock_lock_init(sk); sock_net_set(sk, get_net(net)); + atomic_set(&sk->sk_wmem_alloc, 1); } return sk; @@ -1872,7 +1873,6 @@ void sock_init_data(struct socket *sock, struct sock *sk) */ smp_wmb(); atomic_set(&sk->sk_refcnt, 1); - atomic_set(&sk->sk_wmem_alloc, 1); atomic_set(&sk->sk_drops, 0); } EXPORT_SYMBOL(sock_init_data); -- cgit v1.2.3 From 2fbd3da3877ad8d923b055e5996f80b4d4a6daf4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 1 Sep 2009 17:59:25 -0700 Subject: pkt_sched: Revert tasklet_hrtimer changes. These are full of unresolved problems, mainly that conversions don't work 1-1 from hrtimers to tasklet_hrtimers because unlike hrtimers tasklets can't be killed from softirq context. And when a qdisc gets reset, that's exactly what we need to do here. We'll work this out in the net-next-2.6 tree and if warranted we'll backport that work to -stable. This reverts the following 3 changesets: a2cb6a4dd470d7a64255a10b843b0d188416b78f ("pkt_sched: Fix bogon in tasklet_hrtimer changes.") 38acce2d7983632100a9ff3fd20295f6e34074a8 ("pkt_sched: Convert CBQ to tasklet_hrtimer.") ee5f9757ea17759e1ce5503bdae2b07e48e32af9 ("pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer") Signed-off-by: David S. Miller --- include/net/pkt_sched.h | 4 ++-- net/sched/sch_api.c | 10 +++++----- net/sched/sch_cbq.c | 25 +++++++++++-------------- 3 files changed, 18 insertions(+), 21 deletions(-) (limited to 'net') diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 7eafb8d54470..82a3191375f5 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -61,8 +61,8 @@ psched_tdiff_bounded(psched_time_t tv1, psched_time_t tv2, psched_time_t bound) } struct qdisc_watchdog { - struct tasklet_hrtimer timer; - struct Qdisc *qdisc; + struct hrtimer timer; + struct Qdisc *qdisc; }; extern void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc); diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 92e6f3a52c13..24d17ce9c294 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -458,7 +458,7 @@ EXPORT_SYMBOL(qdisc_warn_nonwc); static enum hrtimer_restart qdisc_watchdog(struct hrtimer *timer) { struct qdisc_watchdog *wd = container_of(timer, struct qdisc_watchdog, - timer.timer); + timer); wd->qdisc->flags &= ~TCQ_F_THROTTLED; __netif_schedule(qdisc_root(wd->qdisc)); @@ -468,8 +468,8 @@ static enum hrtimer_restart qdisc_watchdog(struct hrtimer *timer) void qdisc_watchdog_init(struct qdisc_watchdog *wd, struct Qdisc *qdisc) { - tasklet_hrtimer_init(&wd->timer, qdisc_watchdog, - CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + hrtimer_init(&wd->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + wd->timer.function = qdisc_watchdog; wd->qdisc = qdisc; } EXPORT_SYMBOL(qdisc_watchdog_init); @@ -485,13 +485,13 @@ void qdisc_watchdog_schedule(struct qdisc_watchdog *wd, psched_time_t expires) wd->qdisc->flags |= TCQ_F_THROTTLED; time = ktime_set(0, 0); time = ktime_add_ns(time, PSCHED_TICKS2NS(expires)); - tasklet_hrtimer_start(&wd->timer, time, HRTIMER_MODE_ABS); + hrtimer_start(&wd->timer, time, HRTIMER_MODE_ABS); } EXPORT_SYMBOL(qdisc_watchdog_schedule); void qdisc_watchdog_cancel(struct qdisc_watchdog *wd) { - tasklet_hrtimer_cancel(&wd->timer); + hrtimer_cancel(&wd->timer); wd->qdisc->flags &= ~TCQ_F_THROTTLED; } EXPORT_SYMBOL(qdisc_watchdog_cancel); diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 149b0405c5ec..d5798e17a832 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -163,7 +163,7 @@ struct cbq_sched_data psched_time_t now_rt; /* Cached real time */ unsigned pmask; - struct tasklet_hrtimer delay_timer; + struct hrtimer delay_timer; struct qdisc_watchdog watchdog; /* Watchdog timer, started when CBQ has backlog, but cannot @@ -503,8 +503,6 @@ static void cbq_ovl_delay(struct cbq_class *cl) cl->undertime = q->now + delay; if (delay > 0) { - struct hrtimer *ht; - sched += delay + cl->penalty; cl->penalized = sched; cl->cpriority = TC_CBQ_MAXPRIO; @@ -512,12 +510,12 @@ static void cbq_ovl_delay(struct cbq_class *cl) expires = ktime_set(0, 0); expires = ktime_add_ns(expires, PSCHED_TICKS2NS(sched)); - ht = &q->delay_timer.timer; - if (hrtimer_try_to_cancel(ht) && - ktime_to_ns(ktime_sub(hrtimer_get_expires(ht), - expires)) > 0) - hrtimer_set_expires(ht, expires); - hrtimer_restart(ht); + if (hrtimer_try_to_cancel(&q->delay_timer) && + ktime_to_ns(ktime_sub( + hrtimer_get_expires(&q->delay_timer), + expires)) > 0) + hrtimer_set_expires(&q->delay_timer, expires); + hrtimer_restart(&q->delay_timer); cl->delayed = 1; cl->xstats.overactions++; return; @@ -593,7 +591,7 @@ static psched_tdiff_t cbq_undelay_prio(struct cbq_sched_data *q, int prio, static enum hrtimer_restart cbq_undelay(struct hrtimer *timer) { struct cbq_sched_data *q = container_of(timer, struct cbq_sched_data, - delay_timer.timer); + delay_timer); struct Qdisc *sch = q->watchdog.qdisc; psched_time_t now; psched_tdiff_t delay = 0; @@ -623,7 +621,7 @@ static enum hrtimer_restart cbq_undelay(struct hrtimer *timer) time = ktime_set(0, 0); time = ktime_add_ns(time, PSCHED_TICKS2NS(now + delay)); - tasklet_hrtimer_start(&q->delay_timer, time, HRTIMER_MODE_ABS); + hrtimer_start(&q->delay_timer, time, HRTIMER_MODE_ABS); } sch->flags &= ~TCQ_F_THROTTLED; @@ -1216,7 +1214,7 @@ cbq_reset(struct Qdisc* sch) q->tx_class = NULL; q->tx_borrowed = NULL; qdisc_watchdog_cancel(&q->watchdog); - tasklet_hrtimer_cancel(&q->delay_timer); + hrtimer_cancel(&q->delay_timer); q->toplevel = TC_CBQ_MAXLEVEL; q->now = psched_get_time(); q->now_rt = q->now; @@ -1399,8 +1397,7 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt) q->link.minidle = -0x7FFFFFFF; qdisc_watchdog_init(&q->watchdog, sch); - tasklet_hrtimer_init(&q->delay_timer, cbq_undelay, - CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); q->delay_timer.function = cbq_undelay; q->toplevel = TC_CBQ_MAXLEVEL; q->now = psched_get_time(); -- cgit v1.2.3