Merge branch 'davem-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index b1d2cfea89c5221b568a709c34ccb7031dfeff69..e5569625d2a50db02b290a5d9c339808be17a86b 100644 (file)
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -217,6 +217,14 @@ static inline spinlock_t *qdisc_root_lock(struct Qdisc *qdisc)
        return qdisc_lock(root);
 }
 
+static inline spinlock_t *qdisc_root_sleeping_lock(struct Qdisc *qdisc)
+{
+       struct Qdisc *root = qdisc_root_sleeping(qdisc);
+
+       ASSERT_RTNL();
+       return qdisc_lock(root);
+}
+
 static inline struct net_device *qdisc_dev(struct Qdisc *qdisc)
 {
        return qdisc->dev_queue->dev;
@@ -224,12 +232,12 @@ static inline struct net_device *qdisc_dev(struct Qdisc *qdisc)
 
 static inline void sch_tree_lock(struct Qdisc *q)
 {
-       spin_lock_bh(qdisc_root_lock(q));
+       spin_lock_bh(qdisc_root_sleeping_lock(q));
 }
 
 static inline void sch_tree_unlock(struct Qdisc *q)
 {
-       spin_unlock_bh(qdisc_root_lock(q));
+       spin_unlock_bh(qdisc_root_sleeping_lock(q));
 }
 
 #define tcf_tree_lock(tp)      sch_tree_lock((tp)->q)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e91bafeb32f4590660a084998dbc7531b85f63ef..6ee5354c9aa1f52b38104e3b7f60228de14683a7 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3121,9 +3121,9 @@ static struct ctl_table empty[1];
 static struct ctl_table ipv4_skeleton[] =
 {
        { .procname = "route", .ctl_name = NET_IPV4_ROUTE,
-         .child = ipv4_route_table},
+         .mode = 0555, .child = ipv4_route_table},
        { .procname = "neigh", .ctl_name = NET_IPV4_NEIGH,
-         .child = empty},
+         .mode = 0555, .child = empty},
        { }
 };
 

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index a00532de2a8c17ce19238681764b518c268c0400..8165f5aa8c71b68f5d01dee2abb8dad5c7449c44 100644 (file)
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -468,7 +468,8 @@ static unsigned tcp_syn_options(struct sock *sk, struct sk_buff *skb,
        }
        if (likely(sysctl_tcp_window_scaling)) {
                opts->ws = tp->rx_opt.rcv_wscale;
-               size += TCPOLEN_WSCALE_ALIGNED;
+               if(likely(opts->ws))
+                       size += TCPOLEN_WSCALE_ALIGNED;
        }
        if (likely(sysctl_tcp_sack)) {
                opts->options |= OPTION_SACK_ADVERTISE;
@@ -509,7 +510,8 @@ static unsigned tcp_synack_options(struct sock *sk,
 
        if (likely(ireq->wscale_ok)) {
                opts->ws = ireq->rcv_wscale;
-               size += TCPOLEN_WSCALE_ALIGNED;
+               if(likely(opts->ws))
+                       size += TCPOLEN_WSCALE_ALIGNED;
        }
        if (likely(doing_ts)) {
                opts->options |= OPTION_TS;

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index e7fb9e0d21b48a2949d846c61b9c775a535bcd24..506b709510b65bc0849d284f52bdd617735cc778 100644 (file)
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -624,7 +624,7 @@ static struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
        struct Qdisc *oqdisc = dev_queue->qdisc_sleeping;
        spinlock_t *root_lock;
 
-       root_lock = qdisc_root_lock(oqdisc);
+       root_lock = qdisc_lock(oqdisc);
        spin_lock_bh(root_lock);
 
        /* Prune old scheduler */
@@ -635,7 +635,7 @@ static struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
        if (qdisc == NULL)
                qdisc = &noop_qdisc;
        dev_queue->qdisc_sleeping = qdisc;
-       dev_queue->qdisc = &noop_qdisc;
+       rcu_assign_pointer(dev_queue->qdisc, &noop_qdisc);
 
        spin_unlock_bh(root_lock);
 
@@ -830,9 +830,16 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
                        sch->stab = stab;
                }
                if (tca[TCA_RATE]) {
+                       spinlock_t *root_lock;
+
+                       if ((sch->parent != TC_H_ROOT) &&
+                           !(sch->flags & TCQ_F_INGRESS))
+                               root_lock = qdisc_root_sleeping_lock(sch);
+                       else
+                               root_lock = qdisc_lock(sch);
+
                        err = gen_new_estimator(&sch->bstats, &sch->rate_est,
-                                               qdisc_root_lock(sch),
-                                               tca[TCA_RATE]);
+                                               root_lock, tca[TCA_RATE]);
                        if (err) {
                                /*
                                 * Any broken qdiscs that would require
@@ -884,7 +891,8 @@ static int qdisc_change(struct Qdisc *sch, struct nlattr **tca)
 
        if (tca[TCA_RATE])
                gen_replace_estimator(&sch->bstats, &sch->rate_est,
-                                     qdisc_root_lock(sch), tca[TCA_RATE]);
+                                     qdisc_root_sleeping_lock(sch),
+                                     tca[TCA_RATE]);
        return 0;
 }
 

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 8fa90d68ec6d8ab2f7ac47efcd511e31553bece6..9b720adedead51611403d0e3dc846b32445e9474 100644 (file)
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1839,7 +1839,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 
                if (tca[TCA_RATE])
                        gen_replace_estimator(&cl->bstats, &cl->rate_est,
-                                             qdisc_root_lock(sch),
+                                             qdisc_root_sleeping_lock(sch),
                                              tca[TCA_RATE]);
                return 0;
        }
@@ -1930,7 +1930,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 
        if (tca[TCA_RATE])
                gen_new_estimator(&cl->bstats, &cl->rate_est,
-                                 qdisc_root_lock(sch), tca[TCA_RATE]);
+                                 qdisc_root_sleeping_lock(sch), tca[TCA_RATE]);
 
        *arg = (unsigned long)cl;
        return 0;

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 5f0ade7806a733e732ebcc6756695c0065fd844d..9634091ee2f0f7f1c65059d6ae454281d2db0adf 100644 (file)
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -634,7 +634,7 @@ static void dev_deactivate_queue(struct net_device *dev,
                if (!(qdisc->flags & TCQ_F_BUILTIN))
                        set_bit(__QDISC_STATE_DEACTIVATED, &qdisc->state);
 
-               dev_queue->qdisc = qdisc_default;
+               rcu_assign_pointer(dev_queue->qdisc, qdisc_default);
                qdisc_reset(qdisc);
 
                spin_unlock_bh(qdisc_lock(qdisc));
@@ -709,7 +709,7 @@ static void shutdown_scheduler_queue(struct net_device *dev,
        struct Qdisc *qdisc_default = _qdisc_default;
 
        if (qdisc) {
-               dev_queue->qdisc = qdisc_default;
+               rcu_assign_pointer(dev_queue->qdisc, qdisc_default);
                dev_queue->qdisc_sleeping = qdisc_default;
 
                qdisc_destroy(qdisc);

diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index c2b8d9cce3d27175376f425cea18c9d86b971623..c1e77da8cd09bc7dfc0bbe5aee25da12f7f69918 100644 (file)
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1045,7 +1045,7 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
 
                if (tca[TCA_RATE])
                        gen_replace_estimator(&cl->bstats, &cl->rate_est,
-                                             qdisc_root_lock(sch),
+                                             qdisc_root_sleeping_lock(sch),
                                              tca[TCA_RATE]);
                return 0;
        }
@@ -1104,7 +1104,7 @@ hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
 
        if (tca[TCA_RATE])
                gen_new_estimator(&cl->bstats, &cl->rate_est,
-                                 qdisc_root_lock(sch), tca[TCA_RATE]);
+                                 qdisc_root_sleeping_lock(sch), tca[TCA_RATE]);
        *arg = (unsigned long)cl;
        return 0;
 }

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 0df0df202ed064770699569a6749563ec2d34706..97d4761cc31e8633864a40f1cc35e13b8d668614 100644 (file)
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1372,7 +1372,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
                        goto failure;
 
                gen_new_estimator(&cl->bstats, &cl->rate_est,
-                                 qdisc_root_lock(sch),
+                                 qdisc_root_sleeping_lock(sch),
                                  tca[TCA_RATE] ? : &est.nla);
                cl->refcnt = 1;
                cl->children = 0;
@@ -1427,7 +1427,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
        } else {
                if (tca[TCA_RATE])
                        gen_replace_estimator(&cl->bstats, &cl->rate_est,
-                                             qdisc_root_lock(sch),
+                                             qdisc_root_sleeping_lock(sch),
                                              tca[TCA_RATE]);
                sch_tree_lock(sch);
        }