Merge tag 'v3.8-rc3' into v4l_for_linus

Linux 3.8-rc3

* tag 'v3.8-rc3': (11110 commits)
  Linux 3.8-rc3
  mm: reinstante dropped pmd_trans_splitting() check
  cred: Remove tgcred pointer from struct cred
  drm/ttm: fix fence locking in ttm_buffer_object_transfer
  ARM: clps711x: Fix bad merge of clockevents setup
  ARM: highbank: save and restore L2 cache and GIC on suspend
  ARM: highbank: add a power request clear
  ARM: highbank: fix secondary boot and hotplug
  ARM: highbank: fix typos with hignbank in power request functions
  ARM: dts: fix highbank cpu mpidr values
  ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
  drm/prime: drop reference on imported dma-buf come from gem
  xen/netfront: improve truesize tracking
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
  sctp: fix Kconfig bug in default cookie hmac selection
  EDAC: Cleanup device deregistering path
  EDAC: Fix EDAC Kconfig menu
  EDAC: Fix kernel panic on module unloading
  ALSA: hda - add mute LED for HP Pavilion 17 (Realtek codec)
  ...

7 files changed, 166 insertions, 16 deletions

diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 08114478cb85..ac2defeeba83 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -28,6 +28,7 @@
 #include <linux/if_arp.h>
 #include <linux/if_vlan.h>
 #include <net/ip.h>
+#include <net/ipv6.h>
 #include <net/checksum.h>
 #include <net/dsfield.h>
 
@@ -162,6 +163,53 @@ static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
         *addr = new_addr;
 }
 
+static void update_ipv6_checksum(struct sk_buff *skb, u8 l4_proto,
+                                 __be32 addr[4], const __be32 new_addr[4])
+{
+        int transport_len = skb->len - skb_transport_offset(skb);
+
+        if (l4_proto == IPPROTO_TCP) {
+                if (likely(transport_len >= sizeof(struct tcphdr)))
+                        inet_proto_csum_replace16(&tcp_hdr(skb)->check, skb,
+                                                  addr, new_addr, 1);
+        } else if (l4_proto == IPPROTO_UDP) {
+                if (likely(transport_len >= sizeof(struct udphdr))) {
+                        struct udphdr *uh = udp_hdr(skb);
+
+                        if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) {
+                                inet_proto_csum_replace16(&uh->check, skb,
+                                                          addr, new_addr, 1);
+                                if (!uh->check)
+                                        uh->check = CSUM_MANGLED_0;
+                        }
+                }
+        }
+}
+
+static void set_ipv6_addr(struct sk_buff *skb, u8 l4_proto,
+                          __be32 addr[4], const __be32 new_addr[4],
+                          bool recalculate_csum)
+{
+        if (recalculate_csum)
+                update_ipv6_checksum(skb, l4_proto, addr, new_addr);
+
+        skb->rxhash = 0;
+        memcpy(addr, new_addr, sizeof(__be32[4]));
+}
+
+static void set_ipv6_tc(struct ipv6hdr *nh, u8 tc)
+{
+        nh->priority = tc >> 4;
+        nh->flow_lbl[0] = (nh->flow_lbl[0] & 0x0F) | ((tc & 0x0F) << 4);
+}
+
+static void set_ipv6_fl(struct ipv6hdr *nh, u32 fl)
+{
+        nh->flow_lbl[0] = (nh->flow_lbl[0] & 0xF0) | (fl & 0x000F0000) >> 16;
+        nh->flow_lbl[1] = (fl & 0x0000FF00) >> 8;
+        nh->flow_lbl[2] = fl & 0x000000FF;
+}
+
 static void set_ip_ttl(struct sk_buff *skb, struct iphdr *nh, u8 new_ttl)
 {
         csum_replace2(&nh->check, htons(nh->ttl << 8), htons(new_ttl << 8));
@@ -195,6 +243,47 @@ static int set_ipv4(struct sk_buff *skb, const struct ovs_key_ipv4 *ipv4_key)
         return 0;
 }
 
+static int set_ipv6(struct sk_buff *skb, const struct ovs_key_ipv6 *ipv6_key)
+{
+        struct ipv6hdr *nh;
+        int err;
+        __be32 *saddr;
+        __be32 *daddr;
+
+        err = make_writable(skb, skb_network_offset(skb) +
+                            sizeof(struct ipv6hdr));
+        if (unlikely(err))
+                return err;
+
+        nh = ipv6_hdr(skb);
+        saddr = (__be32 *)&nh->saddr;
+        daddr = (__be32 *)&nh->daddr;
+
+        if (memcmp(ipv6_key->ipv6_src, saddr, sizeof(ipv6_key->ipv6_src)))
+                set_ipv6_addr(skb, ipv6_key->ipv6_proto, saddr,
+                              ipv6_key->ipv6_src, true);
+
+        if (memcmp(ipv6_key->ipv6_dst, daddr, sizeof(ipv6_key->ipv6_dst))) {
+                unsigned int offset = 0;
+                int flags = IP6_FH_F_SKIP_RH;
+                bool recalc_csum = true;
+
+                if (ipv6_ext_hdr(nh->nexthdr))
+                        recalc_csum = ipv6_find_hdr(skb, &offset,
+                                                    NEXTHDR_ROUTING, NULL,
+                                                    &flags) != NEXTHDR_ROUTING;
+
+                set_ipv6_addr(skb, ipv6_key->ipv6_proto, daddr,
+                              ipv6_key->ipv6_dst, recalc_csum);
+        }
+
+        set_ipv6_tc(nh, ipv6_key->ipv6_tclass);
+        set_ipv6_fl(nh, ntohl(ipv6_key->ipv6_label));
+        nh->hop_limit = ipv6_key->ipv6_hlimit;
+
+        return 0;
+}
+
 /* Must follow make_writable() since that can move the skb data. */
 static void set_tp_port(struct sk_buff *skb, __be16 *port,
                          __be16 new_port, __sum16 *check)
@@ -339,6 +428,10 @@ static int execute_set_action(struct sk_buff *skb,
                 skb->priority = nla_get_u32(nested_attr);
                 break;
 
+        case OVS_KEY_ATTR_SKB_MARK:
+                skb->mark = nla_get_u32(nested_attr);
+                break;
+
         case OVS_KEY_ATTR_ETHERNET:
                 err = set_eth_addr(skb, nla_data(nested_attr));
                 break;
@@ -347,6 +440,10 @@ static int execute_set_action(struct sk_buff *skb,
                 err = set_ipv4(skb, nla_data(nested_attr));
                 break;
 
+        case OVS_KEY_ATTR_IPV6:
+                err = set_ipv6(skb, nla_data(nested_attr));
+                break;
+
         case OVS_KEY_ATTR_TCP:
                 err = set_tcp(skb, nla_data(nested_attr));
                 break;
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 4c4b62ccc7d7..f996db343247 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -208,7 +208,7 @@ void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
         int error;
         int key_len;
 
-        stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id());
+        stats = this_cpu_ptr(dp->stats_percpu);
 
         /* Extract flow from 'skb' into 'key'. */
         error = ovs_flow_extract(skb, p->port_no, &key, &key_len);
@@ -282,7 +282,7 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
         return 0;
 
 err:
-        stats = per_cpu_ptr(dp->stats_percpu, smp_processor_id());
+        stats = this_cpu_ptr(dp->stats_percpu);
 
         u64_stats_update_begin(&stats->sync);
         stats->n_lost++;
@@ -479,8 +479,10 @@ static int validate_set(const struct nlattr *a,
 
         switch (key_type) {
         const struct ovs_key_ipv4 *ipv4_key;
+        const struct ovs_key_ipv6 *ipv6_key;
 
         case OVS_KEY_ATTR_PRIORITY:
+        case OVS_KEY_ATTR_SKB_MARK:
         case OVS_KEY_ATTR_ETHERNET:
                 break;
 
@@ -500,6 +502,25 @@ static int validate_set(const struct nlattr *a,
 
                 break;
 
+        case OVS_KEY_ATTR_IPV6:
+                if (flow_key->eth.type != htons(ETH_P_IPV6))
+                        return -EINVAL;
+
+                if (!flow_key->ip.proto)
+                        return -EINVAL;
+
+                ipv6_key = nla_data(ovs_key);
+                if (ipv6_key->ipv6_proto != flow_key->ip.proto)
+                        return -EINVAL;
+
+                if (ipv6_key->ipv6_frag != flow_key->ip.frag)
+                        return -EINVAL;
+
+                if (ntohl(ipv6_key->ipv6_label) & 0xFFF00000)
+                        return -EINVAL;
+
+                break;
+
         case OVS_KEY_ATTR_TCP:
                 if (flow_key->ip.proto != IPPROTO_TCP)
                         return -EINVAL;
@@ -675,6 +696,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
                 goto err_flow_free;
 
         err = ovs_flow_metadata_from_nlattrs(&flow->key.phy.priority,
+                                             &flow->key.phy.skb_mark,
                                              &flow->key.phy.in_port,
                                              a[OVS_PACKET_ATTR_KEY]);
         if (err)
@@ -694,6 +716,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
 
         OVS_CB(packet)->flow = flow;
         packet->priority = flow->key.phy.priority;
+        packet->mark = flow->key.phy.skb_mark;
 
         rcu_read_lock();
         dp = get_dp(sock_net(skb->sk), ovs_header->dp_ifindex);
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 733cbf49ed1f..c3294cebc4f2 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -604,6 +604,7 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
 
         key->phy.priority = skb->priority;
         key->phy.in_port = in_port;
+        key->phy.skb_mark = skb->mark;
 
         skb_reset_mac_header(skb);
 
@@ -689,7 +690,8 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key,
                         }
                 }
 
-        } else if (key->eth.type == htons(ETH_P_ARP) && arphdr_ok(skb)) {
+        } else if ((key->eth.type == htons(ETH_P_ARP) ||
+                   key->eth.type == htons(ETH_P_RARP)) && arphdr_ok(skb)) {
                 struct arp_eth_header *arp;
 
                 arp = (struct arp_eth_header *)skb_network_header(skb);
@@ -802,6 +804,7 @@ const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = {
         [OVS_KEY_ATTR_ENCAP] = -1,
         [OVS_KEY_ATTR_PRIORITY] = sizeof(u32),
         [OVS_KEY_ATTR_IN_PORT] = sizeof(u32),
+        [OVS_KEY_ATTR_SKB_MARK] = sizeof(u32),
         [OVS_KEY_ATTR_ETHERNET] = sizeof(struct ovs_key_ethernet),
         [OVS_KEY_ATTR_VLAN] = sizeof(__be16),
         [OVS_KEY_ATTR_ETHERTYPE] = sizeof(__be16),
@@ -987,6 +990,10 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
         } else {
                 swkey->phy.in_port = DP_MAX_PORTS;
         }
+        if (attrs & (1 << OVS_KEY_ATTR_SKB_MARK)) {
+                swkey->phy.skb_mark = nla_get_u32(a[OVS_KEY_ATTR_SKB_MARK]);
+                attrs &= ~(1 << OVS_KEY_ATTR_SKB_MARK);
+        }
 
         /* Data attributes. */
         if (!(attrs & (1 << OVS_KEY_ATTR_ETHERNET)))
@@ -1086,7 +1093,8 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
                         if (err)
                                 return err;
                 }
-        } else if (swkey->eth.type == htons(ETH_P_ARP)) {
+        } else if (swkey->eth.type == htons(ETH_P_ARP) ||
+                   swkey->eth.type == htons(ETH_P_RARP)) {
                 const struct ovs_key_arp *arp_key;
 
                 if (!(attrs & (1 << OVS_KEY_ATTR_ARP)))
@@ -1113,6 +1121,8 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
 
 /**
  * ovs_flow_metadata_from_nlattrs - parses Netlink attributes into a flow key.
+ * @priority: receives the skb priority
+ * @mark: receives the skb mark
  * @in_port: receives the extracted input port.
  * @key: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
  * sequence.
@@ -1122,7 +1132,7 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
  * get the metadata, that is, the parts of the flow key that cannot be
  * extracted from the packet itself.
  */
-int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port,
+int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
                                const struct nlattr *attr)
 {
         const struct nlattr *nla;
@@ -1130,6 +1140,7 @@ int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port,
 
         *in_port = DP_MAX_PORTS;
         *priority = 0;
+        *mark = 0;
 
         nla_for_each_nested(nla, attr, rem) {
                 int type = nla_type(nla);
@@ -1148,6 +1159,10 @@ int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port,
                                         return -EINVAL;
                                 *in_port = nla_get_u32(nla);
                                 break;
+
+                        case OVS_KEY_ATTR_SKB_MARK:
+                                *mark = nla_get_u32(nla);
+                                break;
                         }
                 }
         }
@@ -1169,6 +1184,10 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey, struct sk_buff *skb)
             nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, swkey->phy.in_port))
                 goto nla_put_failure;
 
+        if (swkey->phy.skb_mark &&
+            nla_put_u32(skb, OVS_KEY_ATTR_SKB_MARK, swkey->phy.skb_mark))
+                goto nla_put_failure;
+
         nla = nla_reserve(skb, OVS_KEY_ATTR_ETHERNET, sizeof(*eth_key));
         if (!nla)
                 goto nla_put_failure;
@@ -1222,7 +1241,8 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey, struct sk_buff *skb)
                 ipv6_key->ipv6_tclass = swkey->ip.tos;
                 ipv6_key->ipv6_hlimit = swkey->ip.ttl;
                 ipv6_key->ipv6_frag = swkey->ip.frag;
-        } else if (swkey->eth.type == htons(ETH_P_ARP)) {
+        } else if (swkey->eth.type == htons(ETH_P_ARP) ||
+                   swkey->eth.type == htons(ETH_P_RARP)) {
                 struct ovs_key_arp *arp_key;
 
                 nla = nla_reserve(skb, OVS_KEY_ATTR_ARP, sizeof(*arp_key));
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 14a324eb017b..a7bb60ff3b5b 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -43,6 +43,7 @@ struct sw_flow_actions {
 struct sw_flow_key {
         struct {
                 u32     priority;       /* Packet QoS priority. */
+                u32     skb_mark;       /* SKB mark. */
                 u16     in_port;        /* Input switch port (or DP_MAX_PORTS). */
         } phy;
         struct {
@@ -144,6 +145,7 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies);
  *                         ------  ---  ------  -----
  *  OVS_KEY_ATTR_PRIORITY      4    --     4      8
  *  OVS_KEY_ATTR_IN_PORT       4    --     4      8
+ *  OVS_KEY_ATTR_SKB_MARK      4    --     4      8
  *  OVS_KEY_ATTR_ETHERNET     12    --     4     16
  *  OVS_KEY_ATTR_ETHERTYPE     2     2     4      8  (outer VLAN ethertype)
  *  OVS_KEY_ATTR_8021Q         4    --     4      8
@@ -153,14 +155,14 @@ u64 ovs_flow_used_time(unsigned long flow_jiffies);
  *  OVS_KEY_ATTR_ICMPV6        2     2     4      8
  *  OVS_KEY_ATTR_ND           28    --     4     32
  *  -------------------------------------------------
- *  total                                       144
+ *  total                                       152
  */
-#define FLOW_BUFSIZE 144
+#define FLOW_BUFSIZE 152
 
 int ovs_flow_to_nlattrs(const struct sw_flow_key *, struct sk_buff *);
 int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
                       const struct nlattr *);
-int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port,
+int ovs_flow_metadata_from_nlattrs(u32 *priority, u32 *mark, u16 *in_port,
                                const struct nlattr *);
 
 #define MAX_ACTIONS_BUFSIZE    (16 * 1024)
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index a9033481fa5e..a9327e2e48ce 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -114,6 +114,15 @@ error:
         return ERR_PTR(err);
 }
 
+static void free_port_rcu(struct rcu_head *rcu)
+{
+        struct netdev_vport *netdev_vport = container_of(rcu,
+                                        struct netdev_vport, rcu);
+
+        dev_put(netdev_vport->dev);
+        ovs_vport_free(vport_from_priv(netdev_vport));
+}
+
 static void netdev_destroy(struct vport *vport)
 {
         struct netdev_vport *netdev_vport = netdev_vport_priv(vport);
@@ -122,10 +131,7 @@ static void netdev_destroy(struct vport *vport)
         netdev_rx_handler_unregister(netdev_vport->dev);
         dev_set_promiscuity(netdev_vport->dev, -1);
 
-        synchronize_rcu();
-
-        dev_put(netdev_vport->dev);
-        ovs_vport_free(vport);
+        call_rcu(&netdev_vport->rcu, free_port_rcu);
 }
 
 const char *ovs_netdev_get_name(const struct vport *vport)
diff --git a/net/openvswitch/vport-netdev.h b/net/openvswitch/vport-netdev.h
index f7072a25c604..6478079b3417 100644
--- a/net/openvswitch/vport-netdev.h
+++ b/net/openvswitch/vport-netdev.h
@@ -20,12 +20,15 @@
 #define VPORT_NETDEV_H 1
 
 #include <linux/netdevice.h>
+#include <linux/rcupdate.h>
 
 #include "vport.h"
 
 struct vport *ovs_netdev_get_vport(struct net_device *dev);
 
 struct netdev_vport {
+        struct rcu_head rcu;
+
         struct net_device *dev;
 };
 
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 03779e8a2622..70af0bedbac4 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -333,8 +333,7 @@ void ovs_vport_receive(struct vport *vport, struct sk_buff *skb)
 {
         struct vport_percpu_stats *stats;
 
-        stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id());
-
+        stats = this_cpu_ptr(vport->percpu_stats);
         u64_stats_update_begin(&stats->sync);
         stats->rx_packets++;
         stats->rx_bytes += skb->len;
@@ -359,7 +358,7 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
         if (likely(sent)) {
                 struct vport_percpu_stats *stats;
 
-                stats = per_cpu_ptr(vport->percpu_stats, smp_processor_id());
+                stats = this_cpu_ptr(vport->percpu_stats);
 
                 u64_stats_update_begin(&stats->sync);
                 stats->tx_packets++;