Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from David Miller:

 1) Support IPV6 RA Captive Portal Identifier, from Maciej Żenczykowski.

 2) Use bio_vec in the networking instead of custom skb_frag_t, from
    Matthew Wilcox.

 3) Make use of xmit_more in r8169 driver, from Heiner Kallweit.

 4) Add devmap_hash to xdp, from Toke Høiland-Jørgensen.

 5) Support all variants of 5750X bnxt_en chips, from Michael Chan.

 6) More RTNL avoidance work in the core and mlx5 driver, from Vlad
    Buslov.

 7) Add TCP syn cookies bpf helper, from Petar Penkov.

 8) Add 'nettest' to selftests and use it, from David Ahern.

 9) Add extack support to drop_monitor, add packet alert mode and
    support for HW drops, from Ido Schimmel.

10) Add VLAN offload to stmmac, from Jose Abreu.

11) Lots of devm_platform_ioremap_resource() conversions, from
    YueHaibing.

12) Add IONIC driver, from Shannon Nelson.

13) Several kTLS cleanups, from Jakub Kicinski.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1930 commits)
  mlxsw: spectrum_buffers: Add the ability to query the CPU port's shared buffer
  mlxsw: spectrum: Register CPU port with devlink
  mlxsw: spectrum_buffers: Prevent changing CPU port's configuration
  net: ena: fix incorrect update of intr_delay_resolution
  net: ena: fix retrieval of nonadaptive interrupt moderation intervals
  net: ena: fix update of interrupt moderation register
  net: ena: remove all old adaptive rx interrupt moderation code from ena_com
  net: ena: remove ena_restore_ethtool_params() and relevant fields
  net: ena: remove old adaptive interrupt moderation code from ena_netdev
  net: ena: remove code duplication in ena_com_update_nonadaptive_moderation_interval _*()
  net: ena: enable the interrupt_moderation in driver_supported_features
  net: ena: reimplement set/get_coalesce()
  net: ena: switch to dim algorithm for rx adaptive interrupt moderation
  net: ena: add intr_moder_rx_interval to struct ena_com_dev and use it
  net: phy: adin: implement Energy Detect Powerdown mode via phy-tunable
  ethtool: implement Energy Detect Powerdown support via phy-tunable
  xen-netfront: do not assume sk_buff_head list is empty in error handling
  s390/ctcm: Delete unnecessary checks before the macro call “dev_kfree_skb”
  net: ena: don't wake up tx queue when down
  drop_monitor: Better sanitize notified packets
  ...

1 files changed, 100 insertions, 50 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ba5583522d24..907209c0794e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -14,6 +14,7 @@
 #include <linux/compiler.h>
 #include <linux/time.h>
 #include <linux/bug.h>
+#include <linux/bvec.h>
 #include <linux/cache.h>
 #include <linux/rbtree.h>
 #include <linux/socket.h>
@@ -36,6 +37,9 @@
 #include <linux/in6.h>
 #include <linux/if_packet.h>
 #include <net/flow.h>
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+#include <linux/netfilter/nf_conntrack_common.h>
+#endif
 
 /* The interface for checksum offload between the stack and networking drivers
  * is as follows...
@@ -243,12 +247,6 @@ struct bpf_prog;
 union bpf_attr;
 struct skb_ext;
 
-#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
-struct nf_conntrack {
-	atomic_t use;
-};
-#endif
-
 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
 struct nf_bridge_info {
 	enum {
@@ -278,6 +276,16 @@ struct nf_bridge_info {
 };
 #endif
 
+#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
+/* Chain in tc_skb_ext will be used to share the tc chain with
+ * ovs recirc_id. It will be set to the current chain by tc
+ * and read by ovs to recirc_id.
+ */
+struct tc_skb_ext {
+	__u32 chain;
+};
+#endif
+
 struct sk_buff_head {
 	/* These two members must be first. */
 	struct sk_buff	*next;
@@ -308,58 +316,45 @@ extern int sysctl_max_skb_frags;
  */
 #define GSO_BY_FRAGS	0xFFFF
 
-typedef struct skb_frag_struct skb_frag_t;
-
-struct skb_frag_struct {
-	struct {
-		struct page *p;
-	} page;
-#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
-	__u32 page_offset;
-	__u32 size;
-#else
-	__u16 page_offset;
-	__u16 size;
-#endif
-};
+typedef struct bio_vec skb_frag_t;
 
 /**
- * skb_frag_size - Returns the size of a skb fragment
+ * skb_frag_size() - Returns the size of a skb fragment
  * @frag: skb fragment
  */
 static inline unsigned int skb_frag_size(const skb_frag_t *frag)
 {
-	return frag->size;
+	return frag->bv_len;
 }
 
 /**
- * skb_frag_size_set - Sets the size of a skb fragment
+ * skb_frag_size_set() - Sets the size of a skb fragment
  * @frag: skb fragment
  * @size: size of fragment
  */
 static inline void skb_frag_size_set(skb_frag_t *frag, unsigned int size)
 {
-	frag->size = size;
+	frag->bv_len = size;
 }
 
 /**
- * skb_frag_size_add - Incrementes the size of a skb fragment by %delta
+ * skb_frag_size_add() - Increments the size of a skb fragment by @delta
  * @frag: skb fragment
  * @delta: value to add
  */
 static inline void skb_frag_size_add(skb_frag_t *frag, int delta)
 {
-	frag->size += delta;
+	frag->bv_len += delta;
 }
 
 /**
- * skb_frag_size_sub - Decrements the size of a skb fragment by %delta
+ * skb_frag_size_sub() - Decrements the size of a skb fragment by @delta
  * @frag: skb fragment
  * @delta: value to subtract
  */
 static inline void skb_frag_size_sub(skb_frag_t *frag, int delta)
 {
-	frag->size -= delta;
+	frag->bv_len -= delta;
 }
 
 /**
@@ -379,7 +374,7 @@ static inline bool skb_frag_must_loop(struct page *p)
  *	skb_frag_foreach_page - loop over pages in a fragment
  *
  *	@f:		skb frag to operate on
- *	@f_off:		offset from start of f->page.p
+ *	@f_off:		offset from start of f->bv_page
  *	@f_len:		length from f_off to loop over
  *	@p:		(temp var) current page
  *	@p_off:		(temp var) offset from start of current page,
@@ -916,7 +911,6 @@ static inline bool skb_pfmemalloc(const struct sk_buff *skb)
 #define SKB_DST_NOREF	1UL
 #define SKB_DST_PTRMASK	~(SKB_DST_NOREF)
 
-#define SKB_NFCT_PTRMASK	~(7UL)
 /**
  * skb_dst - returns skb dst_entry
  * @skb: buffer
@@ -1283,7 +1277,7 @@ static inline int skb_flow_dissector_bpf_prog_detach(const union bpf_attr *attr)
 
 struct bpf_flow_dissector;
 bool bpf_flow_dissect(struct bpf_prog *prog, struct bpf_flow_dissector *ctx,
-		      __be16 proto, int nhoff, int hlen);
+		      __be16 proto, int nhoff, int hlen, unsigned int flags);
 
 bool __skb_flow_dissect(const struct net *net,
 			const struct sk_buff *skb,
@@ -2097,8 +2091,8 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
 	 * that not all callers have unique ownership of the page but rely
 	 * on page_is_pfmemalloc doing the right thing(tm).
 	 */
-	frag->page.p		  = page;
-	frag->page_offset	  = off;
+	frag->bv_page		  = page;
+	frag->bv_offset		  = off;
 	skb_frag_size_set(frag, size);
 
 	page = compound_head(page);
@@ -2878,6 +2872,46 @@ static inline void skb_propagate_pfmemalloc(struct page *page,
 }
 
 /**
+ * skb_frag_off() - Returns the offset of a skb fragment
+ * @frag: the paged fragment
+ */
+static inline unsigned int skb_frag_off(const skb_frag_t *frag)
+{
+	return frag->bv_offset;
+}
+
+/**
+ * skb_frag_off_add() - Increments the offset of a skb fragment by @delta
+ * @frag: skb fragment
+ * @delta: value to add
+ */
+static inline void skb_frag_off_add(skb_frag_t *frag, int delta)
+{
+	frag->bv_offset += delta;
+}
+
+/**
+ * skb_frag_off_set() - Sets the offset of a skb fragment
+ * @frag: skb fragment
+ * @offset: offset of fragment
+ */
+static inline void skb_frag_off_set(skb_frag_t *frag, unsigned int offset)
+{
+	frag->bv_offset = offset;
+}
+
+/**
+ * skb_frag_off_copy() - Sets the offset of a skb fragment from another fragment
+ * @fragto: skb fragment where offset is set
+ * @fragfrom: skb fragment offset is copied from
+ */
+static inline void skb_frag_off_copy(skb_frag_t *fragto,
+				     const skb_frag_t *fragfrom)
+{
+	fragto->bv_offset = fragfrom->bv_offset;
+}
+
+/**
  * skb_frag_page - retrieve the page referred to by a paged fragment
  * @frag: the paged fragment
  *
@@ -2885,7 +2919,7 @@ static inline void skb_propagate_pfmemalloc(struct page *page,
  */
 static inline struct page *skb_frag_page(const skb_frag_t *frag)
 {
-	return frag->page.p;
+	return frag->bv_page;
 }
 
 /**
@@ -2943,7 +2977,7 @@ static inline void skb_frag_unref(struct sk_buff *skb, int f)
  */
 static inline void *skb_frag_address(const skb_frag_t *frag)
 {
-	return page_address(skb_frag_page(frag)) + frag->page_offset;
+	return page_address(skb_frag_page(frag)) + skb_frag_off(frag);
 }
 
 /**
@@ -2959,7 +2993,18 @@ static inline void *skb_frag_address_safe(const skb_frag_t *frag)
 	if (unlikely(!ptr))
 		return NULL;
 
-	return ptr + frag->page_offset;
+	return ptr + skb_frag_off(frag);
+}
+
+/**
+ * skb_frag_page_copy() - sets the page in a fragment from another fragment
+ * @fragto: skb fragment where page is set
+ * @fragfrom: skb fragment page is copied from
+ */
+static inline void skb_frag_page_copy(skb_frag_t *fragto,
+				      const skb_frag_t *fragfrom)
+{
+	fragto->bv_page = fragfrom->bv_page;
 }
 
 /**
@@ -2971,7 +3016,7 @@ static inline void *skb_frag_address_safe(const skb_frag_t *frag)
  */
 static inline void __skb_frag_set_page(skb_frag_t *frag, struct page *page)
 {
-	frag->page.p = page;
+	frag->bv_page = page;
 }
 
 /**
@@ -3007,7 +3052,7 @@ static inline dma_addr_t skb_frag_dma_map(struct device *dev,
 					  enum dma_data_direction dir)
 {
 	return dma_map_page(dev, skb_frag_page(frag),
-			    frag->page_offset + offset, size, dir);
+			    skb_frag_off(frag) + offset, size, dir);
 }
 
 static inline struct sk_buff *pskb_copy(struct sk_buff *skb,
@@ -3174,10 +3219,10 @@ static inline bool skb_can_coalesce(struct sk_buff *skb, int i,
 	if (skb_zcopy(skb))
 		return false;
 	if (i) {
-		const struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
+		const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
 
 		return page == skb_frag_page(frag) &&
-		       off == frag->page_offset + skb_frag_size(frag);
+		       off == skb_frag_off(frag) + skb_frag_size(frag);
 	}
 	return false;
 }
@@ -3991,25 +4036,27 @@ static inline void skb_remcsum_process(struct sk_buff *skb, void *ptr,
 static inline struct nf_conntrack *skb_nfct(const struct sk_buff *skb)
 {
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
-	return (void *)(skb->_nfct & SKB_NFCT_PTRMASK);
+	return (void *)(skb->_nfct & NFCT_PTRMASK);
 #else
 	return NULL;
 #endif
 }
 
-#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
-void nf_conntrack_destroy(struct nf_conntrack *nfct);
-static inline void nf_conntrack_put(struct nf_conntrack *nfct)
+static inline unsigned long skb_get_nfct(const struct sk_buff *skb)
 {
-	if (nfct && atomic_dec_and_test(&nfct->use))
-		nf_conntrack_destroy(nfct);
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+	return skb->_nfct;
+#else
+	return 0UL;
+#endif
 }
-static inline void nf_conntrack_get(struct nf_conntrack *nfct)
+
+static inline void skb_set_nfct(struct sk_buff *skb, unsigned long nfct)
 {
-	if (nfct)
-		atomic_inc(&nfct->use);
-}
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+	skb->_nfct = nfct;
 #endif
+}
 
 #ifdef CONFIG_SKB_EXTENSIONS
 enum skb_ext_id {
@@ -4019,6 +4066,9 @@ enum skb_ext_id {
 #ifdef CONFIG_XFRM
 	SKB_EXT_SEC_PATH,
 #endif
+#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
+	TC_SKB_EXT,
+#endif
 	SKB_EXT_NUM, /* must be last */
 };