Merge tag 'v3.10' into sdk-kernel-3.10

git rebase --continue

Linux 3.10

Conflicts:
	Documentation/virtual/kvm/api.txt
	arch/ia64/kvm/Makefile
	arch/powerpc/Kconfig
	arch/powerpc/Makefile
	arch/powerpc/boot/dts/b4420qds.dts
	arch/powerpc/boot/dts/b4860qds.dts
	arch/powerpc/boot/dts/b4qds.dts
	arch/powerpc/boot/dts/fsl/b4420si-post.dtsi
	arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi
	arch/powerpc/boot/dts/fsl/b4860si-post.dtsi
	arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi
	arch/powerpc/boot/dts/fsl/b4si-post.dtsi
	arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
	arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
	arch/powerpc/boot/dts/fsl/p3041si-post.dtsi
	arch/powerpc/boot/dts/fsl/p4080si-post.dtsi
	arch/powerpc/boot/dts/fsl/p5020si-post.dtsi
	arch/powerpc/boot/dts/fsl/p5040si-post.dtsi
	arch/powerpc/boot/dts/fsl/qonverge-usb2-dr-0.dtsi
	arch/powerpc/boot/dts/fsl/qoriq-sec5.0-0.dtsi
	arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
	arch/powerpc/boot/dts/fsl/t4240si-pre.dtsi
	arch/powerpc/boot/dts/p1025rdb_36b.dts
	arch/powerpc/boot/dts/t4240qds.dts
	arch/powerpc/configs/corenet64_smp_defconfig
	arch/powerpc/configs/mpc85xx_defconfig
	arch/powerpc/configs/mpc85xx_smp_defconfig
	arch/powerpc/include/asm/cputable.h
	arch/powerpc/include/asm/kvm_host.h
	arch/powerpc/include/asm/kvm_ppc.h
	arch/powerpc/include/asm/machdep.h
	arch/powerpc/include/uapi/asm/kvm.h
	arch/powerpc/kernel/cpu_setup_fsl_booke.S
	arch/powerpc/kernel/cputable.c
	arch/powerpc/kernel/idle.c
	arch/powerpc/kernel/pci-common.c
	arch/powerpc/kvm/Kconfig
	arch/powerpc/kvm/book3s.c
	arch/powerpc/kvm/booke.c
	arch/powerpc/kvm/e500.c
	arch/powerpc/kvm/e500_mmu.c
	arch/powerpc/kvm/e500_mmu_host.c
	arch/powerpc/kvm/e500mc.c
	arch/powerpc/kvm/emulate.c
	arch/powerpc/kvm/irq.h
	arch/powerpc/kvm/mpic.c
	arch/powerpc/kvm/powerpc.c
	arch/powerpc/mm/tlb_nohash.c
	arch/powerpc/platforms/85xx/Kconfig
	arch/powerpc/platforms/85xx/b4_qds.c
	arch/powerpc/platforms/85xx/t4240_qds.c
	arch/powerpc/platforms/pseries/smp.c
	arch/powerpc/sysdev/fsl_85xx_l2ctlr.c
	arch/powerpc/sysdev/fsl_msi.c
	arch/powerpc/sysdev/fsl_pci.c
	arch/powerpc/sysdev/fsl_pci.h
	arch/powerpc/sysdev/mpic.c
	arch/x86/kvm/Makefile
	arch/x86/kvm/x86.c
	drivers/Kconfig
	drivers/clk/Kconfig
	drivers/cpufreq/Makefile
	drivers/crypto/caam/caamalg.c
	drivers/crypto/caam/intern.h
	drivers/crypto/caam/jr.c
	drivers/crypto/caam/regs.h
	drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
	drivers/iommu/Makefile
	drivers/iommu/amd_iommu.c
	drivers/iommu/exynos-iommu.c
	drivers/iommu/intel-iommu.c
	drivers/iommu/iommu.c
	drivers/iommu/msm_iommu.c
	drivers/iommu/omap-iommu.c
	drivers/iommu/tegra-gart.c
	drivers/iommu/tegra-smmu.c
	drivers/misc/Makefile
	drivers/mmc/card/block.c
	drivers/mmc/card/queue.c
	drivers/mmc/core/core.c
	drivers/mtd/nand/fsl_ifc_nand.c
	drivers/net/ethernet/3com/3c501.c
	drivers/net/ethernet/8390/3c503.c
	drivers/net/ethernet/dec/ewrk3.c
	drivers/net/ethernet/freescale/fec.c
	drivers/net/ethernet/freescale/gianfar.c
	drivers/net/ethernet/freescale/gianfar.h
	drivers/net/ethernet/i825xx/3c505.c
	drivers/net/ethernet/i825xx/3c507.c
	drivers/rtc/rtc-ds3232.c
	drivers/s390/net/qeth_core_main.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/ccg/u_ether.c
	drivers/usb/gadget/fsl_udc_core.c
	drivers/usb/otg/fsl_otg.c
	drivers/vfio/vfio.c
	drivers/watchdog/Kconfig
	include/linux/iommu.h
	include/linux/kvm_host.h
	include/linux/mmc/sdhci.h
	include/linux/msi.h
	include/linux/netdev_features.h
	include/linux/pci.h
	include/linux/skbuff.h
	include/net/ip6_route.h
	include/net/sch_generic.h
	include/net/xfrm.h
	include/uapi/linux/kvm.h
	net/core/netpoll.c
	virt/kvm/irqchip.c
	virt/kvm/kvm_main.c

1 files changed, 187 insertions, 5 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 21bb335..bd3b539 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -32,6 +32,7 @@
 #include <linux/hrtimer.h>
 #include <linux/dma-mapping.h>
 #include <linux/netdev_features.h>
+#include <net/flow_keys.h>
 
 /* Don't change this without changing skb_csum_unnecessary! */
 #define CHECKSUM_NONE 0
@@ -230,6 +231,13 @@ enum {
 
 	/* generate wifi status information (where possible) */
 	SKBTX_WIFI_STATUS = 1 << 4,
+
+	/* This indicates at least one fragment might be overwritten
+	 * (as in vmsplice(), sendfile() ...)
+	 * If we need to compute a TX checksum, we'll need to copy
+	 * all frags to avoid possible bad checksum
+	 */
+	SKBTX_SHARED_FRAG = 1 << 5,
 };
 
 /*
@@ -307,6 +315,10 @@ enum {
 	SKB_GSO_TCPV6 = 1 << 4,
 
 	SKB_GSO_FCOE = 1 << 5,
+
+	SKB_GSO_GRE = 1 << 6,
+
+	SKB_GSO_UDP_TUNNEL = 1 << 7,
 };
 
 #if BITS_PER_LONG > 32
@@ -375,9 +387,11 @@ typedef unsigned char *sk_buff_data_t;
  *	@secmark: security marking
  *	@mark: Generic packet mark
  *	@dropcount: total number of sk_receive_queue overflows
+ *	@vlan_proto: vlan encapsulation protocol
  *	@vlan_tci: vlan tag control information
  *	@inner_transport_header: Inner transport layer header (encapsulation)
  *	@inner_network_header: Network layer header (encapsulation)
+ *	@inner_mac_header: Link layer header (encapsulation)
  *	@transport_header: Transport layer header
  *	@network_header: Network layer header
  *	@mac_header: Link layer header
@@ -455,6 +469,7 @@ struct sk_buff {
 
 	__u32			rxhash;
 
+	__be16			vlan_proto;
 	__u16			vlan_tci;
 
 #ifdef CONFIG_NET_SCHED
@@ -494,7 +509,7 @@ struct sk_buff {
 	union {
 		__u32		mark;
 		__u32		dropcount;
-		__u32		avail_size;
+		__u32		reserved_tailroom;
 	};
 
 	sk_buff_data_t		inner_transport_header;
@@ -503,6 +518,7 @@ struct sk_buff {
 	__u8			owner;
 	struct sk_buff		*new_skb;
 #endif
+	sk_buff_data_t		inner_mac_header;
 	sk_buff_data_t		transport_header;
 	sk_buff_data_t		network_header;
 	sk_buff_data_t		mac_header;
@@ -568,7 +584,40 @@ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)
 	skb->_skb_refdst = (unsigned long)dst;
 }
 
-extern void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst);
+extern void __skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst,
+				bool force);
+
+/**
+ * skb_dst_set_noref - sets skb dst, hopefully, without taking reference
+ * @skb: buffer
+ * @dst: dst entry
+ *
+ * Sets skb dst, assuming a reference was not taken on dst.
+ * If dst entry is cached, we do not take reference and dst_release
+ * will be avoided by refdst_drop. If dst entry is not cached, we take
+ * reference, so that last dst_release can destroy the dst immediately.
+ */
+static inline void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst)
+{
+	__skb_dst_set_noref(skb, dst, false);
+}
+
+/**
+ * skb_dst_set_noref_force - sets skb dst, without taking reference
+ * @skb: buffer
+ * @dst: dst entry
+ *
+ * Sets skb dst, assuming a reference was not taken on dst.
+ * No reference is taken and no dst_release will be called. While for
+ * cached dsts deferred reclaim is a basic feature, for entries that are
+ * not cached it is caller's job to guarantee that last dst_release for
+ * provided dst happens when nobody uses it, eg. after a RCU grace period.
+ */
+static inline void skb_dst_set_noref_force(struct sk_buff *skb,
+					   struct dst_entry *dst)
+{
+	__skb_dst_set_noref(skb, dst, true);
+}
 
 /**
  * skb_dst_is_noref - Test if skb dst isn't refcounted
@@ -585,6 +634,7 @@ static inline struct rtable *skb_rtable(const struct sk_buff *skb)
 }
 
 extern void kfree_skb(struct sk_buff *skb);
+extern void kfree_skb_list(struct sk_buff *segs);
 extern void skb_tx_error(struct sk_buff *skb);
 extern void consume_skb(struct sk_buff *skb);
 extern void	       __kfree_skb(struct sk_buff *skb);
@@ -609,6 +659,12 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size,
 	return __alloc_skb(size, priority, SKB_ALLOC_FCLONE, NUMA_NO_NODE);
 }
 
+extern struct sk_buff *__alloc_skb_head(gfp_t priority, int node);
+static inline struct sk_buff *alloc_skb_head(gfp_t priority)
+{
+	return __alloc_skb_head(priority, -1);
+}
+
 extern void skb_recycle(struct sk_buff *skb);
 extern bool skb_recycle_check(struct sk_buff *skb, int skb_size);
 
@@ -807,6 +863,16 @@ static inline int skb_cloned(const struct sk_buff *skb)
 	       (atomic_read(&skb_shinfo(skb)->dataref) & SKB_DATAREF_MASK) != 1;
 }
 
+static inline int skb_unclone(struct sk_buff *skb, gfp_t pri)
+{
+	might_sleep_if(pri & __GFP_WAIT);
+
+	if (skb_cloned(skb))
+		return pskb_expand_head(skb, 0, 0, pri);
+
+	return 0;
+}
+
 /**
  *	skb_header_cloned - is the header a clone
  *	@skb: buffer to check
@@ -1279,11 +1345,13 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
 	 * do not lose pfmemalloc information as the pages would not be
 	 * allocated using __GFP_MEMALLOC.
 	 */
-	if (page->pfmemalloc && !page->mapping)
-		skb->pfmemalloc	= true;
 	frag->page.p		  = page;
 	frag->page_offset	  = off;
 	skb_frag_size_set(frag, size);
+
+	page = compound_head(page);
+	if (page->pfmemalloc && !page->mapping)
+		skb->pfmemalloc	= true;
 }
 
 /**
@@ -1438,7 +1506,10 @@ static inline int skb_tailroom(const struct sk_buff *skb)
  */
 static inline int skb_availroom(const struct sk_buff *skb)
 {
-	return skb_is_nonlinear(skb) ? 0 : skb->avail_size - skb->len;
+	if (skb_is_nonlinear(skb))
+		return 0;
+
+	return skb->end - skb->tail - skb->reserved_tailroom;
 }
 
 /**
@@ -1457,6 +1528,7 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
 
 static inline void skb_reset_inner_headers(struct sk_buff *skb)
 {
+	skb->inner_mac_header = skb->mac_header;
 	skb->inner_network_header = skb->network_header;
 	skb->inner_transport_header = skb->transport_header;
 }
@@ -1502,6 +1574,27 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb,
 	skb->inner_network_header += offset;
 }
 
+static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
+{
+	return skb->head + skb->inner_mac_header;
+}
+
+static inline void skb_reset_inner_mac_header(struct sk_buff *skb)
+{
+	skb->inner_mac_header = skb->data - skb->head;
+}
+
+static inline void skb_set_inner_mac_header(struct sk_buff *skb,
+					    const int offset)
+{
+	skb_reset_inner_mac_header(skb);
+	skb->inner_mac_header += offset;
+}
+static inline bool skb_transport_header_was_set(const struct sk_buff *skb)
+{
+	return skb->transport_header != ~0U;
+}
+
 static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
 {
 	return skb->head + skb->transport_header;
@@ -1590,6 +1683,26 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb,
 	skb->inner_network_header = skb->data + offset;
 }
 
+static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
+{
+	return skb->inner_mac_header;
+}
+
+static inline void skb_reset_inner_mac_header(struct sk_buff *skb)
+{
+	skb->inner_mac_header = skb->data;
+}
+
+static inline void skb_set_inner_mac_header(struct sk_buff *skb,
+						const int offset)
+{
+	skb->inner_mac_header = skb->data + offset;
+}
+static inline bool skb_transport_header_was_set(const struct sk_buff *skb)
+{
+	return skb->transport_header != NULL;
+}
+
 static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
 {
 	return skb->transport_header;
@@ -1642,6 +1755,19 @@ static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
 }
 #endif /* NET_SKBUFF_DATA_USES_OFFSET */
 
+static inline void skb_probe_transport_header(struct sk_buff *skb,
+					      const int offset_hint)
+{
+	struct flow_keys keys;
+
+	if (skb_transport_header_was_set(skb))
+		return;
+	else if (skb_flow_dissect(skb, &keys))
+		skb_set_transport_header(skb, keys.thoff);
+	else
+		skb_set_transport_header(skb, offset_hint);
+}
+
 static inline void skb_mac_header_rebuild(struct sk_buff *skb)
 {
 	if (skb_mac_header_was_set(skb)) {
@@ -1825,6 +1951,10 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
 		kfree_skb(skb);
 }
 
+#define NETDEV_FRAG_PAGE_MAX_ORDER get_order(32768)
+#define NETDEV_FRAG_PAGE_MAX_SIZE  (PAGE_SIZE << NETDEV_FRAG_PAGE_MAX_ORDER)
+#define NETDEV_PAGECNT_MAX_BIAS	   NETDEV_FRAG_PAGE_MAX_SIZE
+
 extern void *netdev_alloc_frag(unsigned int fragsz);
 
 extern struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
@@ -2201,6 +2331,19 @@ static inline int skb_linearize(struct sk_buff *skb)
 }
 
 /**
+ * skb_has_shared_frag - can any frag be overwritten
+ * @skb: buffer to test
+ *
+ * Return true if the skb has at least one frag that might be modified
+ * by an external entity (as in vmsplice()/sendfile())
+ */
+static inline bool skb_has_shared_frag(const struct sk_buff *skb)
+{
+	return skb_is_nonlinear(skb) &&
+	       skb_shinfo(skb)->tx_flags & SKBTX_SHARED_FRAG;
+}
+
+/**
  *	skb_linearize_cow - make sure skb is linear and writable
  *	@skb: buffer to process
  *
@@ -2602,6 +2745,13 @@ static inline void nf_reset(struct sk_buff *skb)
 #endif
 }
 
+static inline void nf_reset_trace(struct sk_buff *skb)
+{
+#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
+	skb->nf_trace = 0;
+#endif
+}
+
 /* Note: This doesn't put any conntrack and bridge info in dst. */
 static inline void __nf_copy(struct sk_buff *dst, const struct sk_buff *src)
 {
@@ -2698,6 +2848,36 @@ static inline struct sec_path *skb_sec_path(struct sk_buff *skb)
 }
 #endif
 
+/* Keeps track of mac header offset relative to skb->head.
+ * It is useful for TSO of Tunneling protocol. e.g. GRE.
+ * For non-tunnel skb it points to skb_mac_header() and for
+ * tunnel skb it points to outer mac header. */
+struct skb_gso_cb {
+	int mac_offset;
+};
+#define SKB_GSO_CB(skb) ((struct skb_gso_cb *)(skb)->cb)
+
+static inline int skb_tnl_header_len(const struct sk_buff *inner_skb)
+{
+	return (skb_mac_header(inner_skb) - inner_skb->head) -
+		SKB_GSO_CB(inner_skb)->mac_offset;
+}
+
+static inline int gso_pskb_expand_head(struct sk_buff *skb, int extra)
+{
+	int new_headroom, headroom;
+	int ret;
+
+	headroom = skb_headroom(skb);
+	ret = pskb_expand_head(skb, extra, 0, GFP_ATOMIC);
+	if (ret)
+		return ret;
+
+	new_headroom = skb_headroom(skb);
+	SKB_GSO_CB(skb)->mac_offset += (new_headroom - headroom);
+	return 0;
+}
+
 static inline bool skb_is_gso(const struct sk_buff *skb)
 {
 	return skb_shinfo(skb)->gso_size;
@@ -2769,6 +2949,8 @@ static inline bool skb_is_recycleable(const struct sk_buff *skb, int skb_size)
 	return true;
 }
 
+u32 __skb_get_poff(const struct sk_buff *skb);
+
 /**
  * skb_head_is_locked - Determine if the skb->head is locked down
  * @skb: skb to check