Merge commit '71f0dd5a3293d75d26d405ffbaedfdda4836af32' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next into for-6.15/io_uring-rx-zc

Merge networking zerocopy receive tree, to get the prep patches for
the io_uring rx zc support.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (63 commits)
  net: add helpers for setting a memory provider on an rx queue
  net: page_pool: add memory provider helpers
  net: prepare for non devmem TCP memory providers
  net: page_pool: add a mp hook to unregister_netdevice*
  net: page_pool: add callback for mp info printing
  netdev: add io_uring memory provider info
  net: page_pool: create hooks for custom memory providers
  net: generalise net_iov chunk owners
  net: prefix devmem specific helpers
  net: page_pool: don't cast mp param to devmem
  tools: ynl: add all headers to makefile deps
  eth: fbnic: set IFF_UNICAST_FLT to avoid enabling promiscuous mode when adding unicast addrs
  eth: fbnic: add MAC address TCAM to debugfs
  tools: ynl-gen: support limits using definitions
  tools: ynl-gen: don't output external constants
  net/mlx5e: Avoid WARN_ON when configuring MQPRIO with HTB offload enabled
  net/mlx5e: Remove unused mlx5e_tc_flow_action struct
  net/mlx5: Remove stray semicolon in LAG port selection table creation
  net/mlx5e: Support FEC settings for 200G per lane link modes
  net/mlx5: Add support for 200Gbps per lane link modes
  ...

1 files changed, 22 insertions, 27 deletions

diff --git a/net/core/devmem.h b/net/core/devmem.h
index 76099ef9c482..7fc158d52729 100644
--- a/net/core/devmem.h
+++ b/net/core/devmem.h
@@ -10,6 +10,8 @@
 #ifndef _NET_DEVMEM_H
 #define _NET_DEVMEM_H
 
+#include <net/netmem.h>
+
 struct netlink_ext_ack;
 
 struct net_devmem_dmabuf_binding {
@@ -51,17 +53,11 @@ struct net_devmem_dmabuf_binding {
  * allocations from this chunk.
  */
 struct dmabuf_genpool_chunk_owner {
-	/* Offset into the dma-buf where this chunk starts.  */
-	unsigned long base_virtual;
+	struct net_iov_area area;
+	struct net_devmem_dmabuf_binding *binding;
 
 	/* dma_addr of the start of the chunk.  */
 	dma_addr_t base_dma_addr;
-
-	/* Array of net_iovs for this chunk. */
-	struct net_iov *niovs;
-	size_t num_niovs;
-
-	struct net_devmem_dmabuf_binding *binding;
 };
 
 void __net_devmem_dmabuf_binding_free(struct net_devmem_dmabuf_binding *binding);
@@ -72,38 +68,34 @@ void net_devmem_unbind_dmabuf(struct net_devmem_dmabuf_binding *binding);
 int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
 				    struct net_devmem_dmabuf_binding *binding,
 				    struct netlink_ext_ack *extack);
-void dev_dmabuf_uninstall(struct net_device *dev);
 
 static inline struct dmabuf_genpool_chunk_owner *
-net_iov_owner(const struct net_iov *niov)
+net_devmem_iov_to_chunk_owner(const struct net_iov *niov)
 {
-	return niov->owner;
+	struct net_iov_area *owner = net_iov_owner(niov);
+
+	return container_of(owner, struct dmabuf_genpool_chunk_owner, area);
 }
 
-static inline unsigned int net_iov_idx(const struct net_iov *niov)
+static inline struct net_devmem_dmabuf_binding *
+net_devmem_iov_binding(const struct net_iov *niov)
 {
-	return niov - net_iov_owner(niov)->niovs;
+	return net_devmem_iov_to_chunk_owner(niov)->binding;
 }
 
-static inline struct net_devmem_dmabuf_binding *
-net_iov_binding(const struct net_iov *niov)
+static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
 {
-	return net_iov_owner(niov)->binding;
+	return net_devmem_iov_binding(niov)->id;
 }
 
 static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
 {
-	struct dmabuf_genpool_chunk_owner *owner = net_iov_owner(niov);
+	struct net_iov_area *owner = net_iov_owner(niov);
 
 	return owner->base_virtual +
 	       ((unsigned long)net_iov_idx(niov) << PAGE_SHIFT);
 }
 
-static inline u32 net_iov_binding_id(const struct net_iov *niov)
-{
-	return net_iov_owner(niov)->binding->id;
-}
-
 static inline void
 net_devmem_dmabuf_binding_get(struct net_devmem_dmabuf_binding *binding)
 {
@@ -123,6 +115,8 @@ struct net_iov *
 net_devmem_alloc_dmabuf(struct net_devmem_dmabuf_binding *binding);
 void net_devmem_free_dmabuf(struct net_iov *ppiov);
 
+bool net_is_devmem_iov(struct net_iov *niov);
+
 #else
 struct net_devmem_dmabuf_binding;
 
@@ -152,10 +146,6 @@ net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
 	return -EOPNOTSUPP;
 }
 
-static inline void dev_dmabuf_uninstall(struct net_device *dev)
-{
-}
-
 static inline struct net_iov *
 net_devmem_alloc_dmabuf(struct net_devmem_dmabuf_binding *binding)
 {
@@ -171,10 +161,15 @@ static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
 	return 0;
 }
 
-static inline u32 net_iov_binding_id(const struct net_iov *niov)
+static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
 {
 	return 0;
 }
+
+static inline bool net_is_devmem_iov(struct net_iov *niov)
+{
+	return false;
+}
 #endif
 
 #endif /* _NET_DEVMEM_H */