6 files changed, 166 insertions, 82 deletions

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 5c9c657ab753..750effe0f98b 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1036,7 +1036,12 @@ int vhost_add_used(struct vhost_virtqueue *vq, unsigned int head, int len)
 /* This actually signals the guest, using eventfd. */
 void vhost_signal(struct vhost_dev *dev, struct vhost_virtqueue *vq)
 {
-        __u16 flags = 0;
+        __u16 flags;
+        /* Flush out used index updates. This is paired
+         * with the barrier that the Guest executes when enabling
+         * interrupts. */
+        smp_mb();
+
         if (get_user(flags, &vq->avail->flags)) {
                 vq_err(vq, "Failed to get flags");
                 return;
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index cfd420ba72df..c3af67fce3f2 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -111,10 +111,7 @@ enum {
         IFLA_NET_NS_PID,
         IFLA_IFALIAS,
         IFLA_NUM_VF,            /* Number of VFs if device is SR-IOV PF */
-        IFLA_VF_MAC,            /* Hardware queue specific attributes */
-        IFLA_VF_VLAN,
-        IFLA_VF_TX_RATE,        /* TX Bandwidth Allocation */
-        IFLA_VFINFO,
+        IFLA_VFINFO_LIST,
         IFLA_STATS64,
         __IFLA_MAX
 };
@@ -236,6 +233,24 @@ enum macvlan_mode {
 
 /* SR-IOV virtual function managment section */
 
+enum {
+        IFLA_VF_INFO_UNSPEC,
+        IFLA_VF_INFO,
+        __IFLA_VF_INFO_MAX,
+};
+
+#define IFLA_VF_INFO_MAX (__IFLA_VF_INFO_MAX - 1)
+
+enum {
+        IFLA_VF_UNSPEC,
+        IFLA_VF_MAC,            /* Hardware queue specific attributes */
+        IFLA_VF_VLAN,
+        IFLA_VF_TX_RATE,        /* TX Bandwidth Allocation */
+        __IFLA_VF_MAX,
+};
+
+#define IFLA_VF_MAX (__IFLA_VF_MAX - 1)
+
 struct ifla_vf_mac {
         __u32 vf;
         __u8 mac[32]; /* MAX_ADDR_LEN */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index fb5c66b2ab81..a1449144848a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1206,30 +1206,15 @@ extern int			tcp_v4_md5_do_del(struct sock *sk,
 extern struct tcp_md5sig_pool * __percpu *tcp_alloc_md5sig_pool(struct sock *);
 extern void                     tcp_free_md5sig_pool(void);
 
-extern struct tcp_md5sig_pool   *__tcp_get_md5sig_pool(int cpu);
-extern void                     __tcp_put_md5sig_pool(void);
+extern struct tcp_md5sig_pool   *tcp_get_md5sig_pool(void);
+extern void                     tcp_put_md5sig_pool(void);
+
 extern int tcp_md5_hash_header(struct tcp_md5sig_pool *, struct tcphdr *);
 extern int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *, struct sk_buff *,
                                  unsigned header_len);
 extern int tcp_md5_hash_key(struct tcp_md5sig_pool *hp,
                             struct tcp_md5sig_key *key);
 
-static inline
-struct tcp_md5sig_pool          *tcp_get_md5sig_pool(void)
-{
-        int cpu = get_cpu();
-        struct tcp_md5sig_pool *ret = __tcp_get_md5sig_pool(cpu);
-        if (!ret)
-                put_cpu();
-        return ret;
-}
-
-static inline void              tcp_put_md5sig_pool(void)
-{
-        __tcp_put_md5sig_pool();
-        put_cpu();
-}
-
 /* write queue abstraction */
 static inline void tcp_write_queue_purge(struct sock *sk)
 {
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 23a71cb21273..66db1201da9b 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -644,12 +644,19 @@ static void copy_rtnl_link_stats64(void *v, const struct net_device_stats *b)
         memcpy(v, &a, sizeof(a));
 }
 
+/* All VF info */
 static inline int rtnl_vfinfo_size(const struct net_device *dev)
 {
-        if (dev->dev.parent && dev_is_pci(dev->dev.parent))
-                return dev_num_vf(dev->dev.parent) *
-                        sizeof(struct ifla_vf_info);
-        else
+        if (dev->dev.parent && dev_is_pci(dev->dev.parent)) {
+
+                int num_vfs = dev_num_vf(dev->dev.parent);
+                size_t size = nlmsg_total_size(sizeof(struct nlattr));
+                size += nlmsg_total_size(num_vfs * sizeof(struct nlattr));
+                size += num_vfs * (sizeof(struct ifla_vf_mac) +
+                                  sizeof(struct ifla_vf_vlan) +
+                                  sizeof(struct ifla_vf_tx_rate));
+                return size;
+        } else
                 return 0;
 }
 
@@ -672,7 +679,7 @@ static inline size_t if_nlmsg_size(const struct net_device *dev)
                + nla_total_size(1) /* IFLA_OPERSTATE */
                + nla_total_size(1) /* IFLA_LINKMODE */
                + nla_total_size(4) /* IFLA_NUM_VF */
-               + nla_total_size(rtnl_vfinfo_size(dev)) /* IFLA_VFINFO */
+               + rtnl_vfinfo_size(dev) /* IFLA_VFINFO_LIST */
                + rtnl_link_get_size(dev); /* IFLA_LINKINFO */
 }
 
@@ -749,14 +756,37 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 
         if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent) {
                 int i;
-                struct ifla_vf_info ivi;
 
-                NLA_PUT_U32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent));
-                for (i = 0; i < dev_num_vf(dev->dev.parent); i++) {
+                struct nlattr *vfinfo, *vf;
+                int num_vfs = dev_num_vf(dev->dev.parent);
+
+                NLA_PUT_U32(skb, IFLA_NUM_VF, num_vfs);
+                vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);
+                if (!vfinfo)
+                        goto nla_put_failure;
+                for (i = 0; i < num_vfs; i++) {
+                        struct ifla_vf_info ivi;
+                        struct ifla_vf_mac vf_mac;
+                        struct ifla_vf_vlan vf_vlan;
+                        struct ifla_vf_tx_rate vf_tx_rate;
                         if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
                                 break;
-                        NLA_PUT(skb, IFLA_VFINFO, sizeof(ivi), &ivi);
+                        vf_mac.vf = vf_vlan.vf = vf_tx_rate.vf = ivi.vf;
+                        memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
+                        vf_vlan.vlan = ivi.vlan;
+                        vf_vlan.qos = ivi.qos;
+                        vf_tx_rate.rate = ivi.tx_rate;
+                        vf = nla_nest_start(skb, IFLA_VF_INFO);
+                        if (!vf) {
+                                nla_nest_cancel(skb, vfinfo);
+                                goto nla_put_failure;
+                        }
+                        NLA_PUT(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac);
+                        NLA_PUT(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan);
+                        NLA_PUT(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), &vf_tx_rate);
+                        nla_nest_end(skb, vf);
                 }
+                nla_nest_end(skb, vfinfo);
         }
         if (dev->rtnl_link_ops) {
                 if (rtnl_link_fill(skb, dev) < 0)
@@ -818,12 +848,7 @@ const struct nla_policy ifla_policy[IFLA_MAX+1] = {
         [IFLA_LINKINFO]         = { .type = NLA_NESTED },
         [IFLA_NET_NS_PID]       = { .type = NLA_U32 },
         [IFLA_IFALIAS]          = { .type = NLA_STRING, .len = IFALIASZ-1 },
-        [IFLA_VF_MAC]           = { .type = NLA_BINARY,
-                                    .len = sizeof(struct ifla_vf_mac) },
-        [IFLA_VF_VLAN]          = { .type = NLA_BINARY,
-                                    .len = sizeof(struct ifla_vf_vlan) },
-        [IFLA_VF_TX_RATE]       = { .type = NLA_BINARY,
-                                    .len = sizeof(struct ifla_vf_tx_rate) },
+        [IFLA_VFINFO_LIST]      = {. type = NLA_NESTED },
 };
 EXPORT_SYMBOL(ifla_policy);
 
@@ -832,6 +857,19 @@ static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
         [IFLA_INFO_DATA]        = { .type = NLA_NESTED },
 };
 
+static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = {
+        [IFLA_VF_INFO]          = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
+        [IFLA_VF_MAC]           = { .type = NLA_BINARY,
+                                    .len = sizeof(struct ifla_vf_mac) },
+        [IFLA_VF_VLAN]          = { .type = NLA_BINARY,
+                                    .len = sizeof(struct ifla_vf_vlan) },
+        [IFLA_VF_TX_RATE]       = { .type = NLA_BINARY,
+                                    .len = sizeof(struct ifla_vf_tx_rate) },
+};
+
 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
 {
         struct net *net;
@@ -861,6 +899,52 @@ static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
         return 0;
 }
 
+static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
+{
+        int rem, err = -EINVAL;
+        struct nlattr *vf;
+        const struct net_device_ops *ops = dev->netdev_ops;
+
+        nla_for_each_nested(vf, attr, rem) {
+                switch (nla_type(vf)) {
+                case IFLA_VF_MAC: {
+                        struct ifla_vf_mac *ivm;
+                        ivm = nla_data(vf);
+                        err = -EOPNOTSUPP;
+                        if (ops->ndo_set_vf_mac)
+                                err = ops->ndo_set_vf_mac(dev, ivm->vf,
+                                                          ivm->mac);
+                        break;
+                }
+                case IFLA_VF_VLAN: {
+                        struct ifla_vf_vlan *ivv;
+                        ivv = nla_data(vf);
+                        err = -EOPNOTSUPP;
+                        if (ops->ndo_set_vf_vlan)
+                                err = ops->ndo_set_vf_vlan(dev, ivv->vf,
+                                                           ivv->vlan,
+                                                           ivv->qos);
+                        break;
+                }
+                case IFLA_VF_TX_RATE: {
+                        struct ifla_vf_tx_rate *ivt;
+                        ivt = nla_data(vf);
+                        err = -EOPNOTSUPP;
+                        if (ops->ndo_set_vf_tx_rate)
+                                err = ops->ndo_set_vf_tx_rate(dev, ivt->vf,
+                                                              ivt->rate);
+                        break;
+                }
+                default:
+                        err = -EINVAL;
+                        break;
+                }
+                if (err)
+                        break;
+        }
+        return err;
+}
+
 static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                       struct nlattr **tb, char *ifname, int modified)
 {
@@ -991,40 +1075,17 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
                 write_unlock_bh(&dev_base_lock);
         }
 
-        if (tb[IFLA_VF_MAC]) {
-                struct ifla_vf_mac *ivm;
-                ivm = nla_data(tb[IFLA_VF_MAC]);
-                err = -EOPNOTSUPP;
-                if (ops->ndo_set_vf_mac)
-                        err = ops->ndo_set_vf_mac(dev, ivm->vf, ivm->mac);
-                if (err < 0)
-                        goto errout;
-                modified = 1;
-        }
-
-        if (tb[IFLA_VF_VLAN]) {
-                struct ifla_vf_vlan *ivv;
-                ivv = nla_data(tb[IFLA_VF_VLAN]);
-                err = -EOPNOTSUPP;
-                if (ops->ndo_set_vf_vlan)
-                        err = ops->ndo_set_vf_vlan(dev, ivv->vf,
-                                                   ivv->vlan,
-                                                   ivv->qos);
-                if (err < 0)
-                        goto errout;
-                modified = 1;
-        }
-        err = 0;
-
-        if (tb[IFLA_VF_TX_RATE]) {
-                struct ifla_vf_tx_rate *ivt;
-                ivt = nla_data(tb[IFLA_VF_TX_RATE]);
-                err = -EOPNOTSUPP;
-                if (ops->ndo_set_vf_tx_rate)
-                        err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, ivt->rate);
-                if (err < 0)
-                        goto errout;
-                modified = 1;
+        if (tb[IFLA_VFINFO_LIST]) {
+                struct nlattr *attr;
+                int rem;
+                nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
+                        if (nla_type(attr) != IFLA_VF_INFO)
+                                goto errout;
+                        err = do_setvfinfo(dev, attr);
+                        if (err < 0)
+                                goto errout;
+                        modified = 1;
+                }
         }
         err = 0;
 
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 8ce29747ad9b..3284393d09b4 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2840,7 +2840,6 @@ static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool * __percpu *pool)
                         if (p->md5_desc.tfm)
                                 crypto_free_hash(p->md5_desc.tfm);
                         kfree(p);
-                        p = NULL;
                 }
         }
         free_percpu(pool);
@@ -2938,25 +2937,40 @@ retry:
 
 EXPORT_SYMBOL(tcp_alloc_md5sig_pool);
 
-struct tcp_md5sig_pool *__tcp_get_md5sig_pool(int cpu)
+
+/**
+ *      tcp_get_md5sig_pool - get md5sig_pool for this user
+ *
+ *      We use percpu structure, so if we succeed, we exit with preemption
+ *      and BH disabled, to make sure another thread or softirq handling
+ *      wont try to get same context.
+ */
+struct tcp_md5sig_pool *tcp_get_md5sig_pool(void)
 {
         struct tcp_md5sig_pool * __percpu *p;
-        spin_lock_bh(&tcp_md5sig_pool_lock);
+
+        local_bh_disable();
+
+        spin_lock(&tcp_md5sig_pool_lock);
         p = tcp_md5sig_pool;
         if (p)
                 tcp_md5sig_users++;
-        spin_unlock_bh(&tcp_md5sig_pool_lock);
-        return (p ? *per_cpu_ptr(p, cpu) : NULL);
-}
+        spin_unlock(&tcp_md5sig_pool_lock);
+
+        if (p)
+                return *per_cpu_ptr(p, smp_processor_id());
 
-EXPORT_SYMBOL(__tcp_get_md5sig_pool);
+        local_bh_enable();
+        return NULL;
+}
+EXPORT_SYMBOL(tcp_get_md5sig_pool);
 
-void __tcp_put_md5sig_pool(void)
+void tcp_put_md5sig_pool(void)
 {
+        local_bh_enable();
         tcp_free_md5sig_pool();
 }
-
-EXPORT_SYMBOL(__tcp_put_md5sig_pool);
+EXPORT_SYMBOL(tcp_put_md5sig_pool);
 
 int tcp_md5_hash_header(struct tcp_md5sig_pool *hp,
                         struct tcphdr *th)
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index d67501f92ca3..132046cb82fc 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -148,6 +148,10 @@ void sctp_transport_free(struct sctp_transport *transport)
             del_timer(&transport->T3_rtx_timer))
                 sctp_transport_put(transport);
 
+        /* Delete the ICMP proto unreachable timer if it's active. */
+        if (timer_pending(&transport->proto_unreach_timer) &&
+            del_timer(&transport->proto_unreach_timer))
+                sctp_association_put(transport->asoc);
 
         sctp_transport_put(transport);
 }