Re: [PATCH v4 02/27] net: datagram: fix some kernel-doc markups

[Kirill Tkhai]

On 16.11.2020 13:17, Mauro Carvalho Chehab wrote:
> Some identifiers have different names between their prototypes
> and the kernel-doc markup.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>

Reviewed-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>

> ---
>  net/core/datagram.c   | 2 +-
>  net/core/dev.c        | 4 ++--
>  net/core/skbuff.c     | 2 +-
>  net/ethernet/eth.c    | 6 +++---
>  net/sunrpc/rpc_pipe.c | 3 ++-
>  5 files changed, 9 insertions(+), 8 deletions(-)
> 
> diff --git a/net/core/datagram.c b/net/core/datagram.c
> index 9fcaa544f11a..81809fa735a7 100644
> --- a/net/core/datagram.c
> +++ b/net/core/datagram.c
> @@ -692,41 +692,41 @@ EXPORT_SYMBOL(__zerocopy_sg_from_iter);
>   *	@from: the source to copy from
>   *
>   *	The function will first copy up to headlen, and then pin the userspace
>   *	pages and build frags through them.
>   *
>   *	Returns 0, -EFAULT or -EMSGSIZE.
>   */
>  int zerocopy_sg_from_iter(struct sk_buff *skb, struct iov_iter *from)
>  {
>  	int copy = min_t(int, skb_headlen(skb), iov_iter_count(from));
>  
>  	/* copy up to skb headlen */
>  	if (skb_copy_datagram_from_iter(skb, 0, from, copy))
>  		return -EFAULT;
>  
>  	return __zerocopy_sg_from_iter(NULL, skb, from, ~0U);
>  }
>  EXPORT_SYMBOL(zerocopy_sg_from_iter);
>  
>  /**
> - *	skb_copy_and_csum_datagram_iter - Copy datagram to an iovec iterator
> + *	skb_copy_and_csum_datagram - Copy datagram to an iovec iterator
>   *          and update a checksum.
>   *	@skb: buffer to copy
>   *	@offset: offset in the buffer to start copying from
>   *	@to: iovec iterator to copy to
>   *	@len: amount of data to copy from buffer to iovec
>   *      @csump: checksum pointer
>   */
>  static int skb_copy_and_csum_datagram(const struct sk_buff *skb, int offset,
>  				      struct iov_iter *to, int len,
>  				      __wsum *csump)
>  {
>  	return __skb_datagram_iter(skb, offset, to, len, true,
>  			csum_and_copy_to_iter, csump);
>  }
>  
>  /**
>   *	skb_copy_and_csum_datagram_msg - Copy and checksum skb to user iovec.
>   *	@skb: skbuff
>   *	@hlen: hardware length
>   *	@msg: destination
> diff --git a/net/core/dev.c b/net/core/dev.c
> index 60d325bda0d7..4bfdcd6b20e8 100644
> --- a/net/core/dev.c
> +++ b/net/core/dev.c
> @@ -6902,41 +6902,41 @@ static int ____netdev_has_upper_dev(struct net_device *upper_dev,
>   *
>   * Find out if a device is linked to specified upper device and return true
>   * in case it is. Note that this checks only immediate upper device,
>   * not through a complete stack of devices. The caller must hold the RTNL lock.
>   */
>  bool netdev_has_upper_dev(struct net_device *dev,
>  			  struct net_device *upper_dev)
>  {
>  	struct netdev_nested_priv priv = {
>  		.data = (void *)upper_dev,
>  	};
>  
>  	ASSERT_RTNL();
>  
>  	return netdev_walk_all_upper_dev_rcu(dev, ____netdev_has_upper_dev,
>  					     &priv);
>  }
>  EXPORT_SYMBOL(netdev_has_upper_dev);
>  
>  /**
> - * netdev_has_upper_dev_all - Check if device is linked to an upper device
> + * netdev_has_upper_dev_all_rcu - Check if device is linked to an upper device
>   * @dev: device
>   * @upper_dev: upper device to check
>   *
>   * Find out if a device is linked to specified upper device and return true
>   * in case it is. Note that this checks the entire upper device chain.
>   * The caller must hold rcu lock.
>   */
>  
>  bool netdev_has_upper_dev_all_rcu(struct net_device *dev,
>  				  struct net_device *upper_dev)
>  {
>  	struct netdev_nested_priv priv = {
>  		.data = (void *)upper_dev,
>  	};
>  
>  	return !!netdev_walk_all_upper_dev_rcu(dev, ____netdev_has_upper_dev,
>  					       &priv);
>  }
>  EXPORT_SYMBOL(netdev_has_upper_dev_all_rcu);
>  
> @@ -8140,41 +8140,41 @@ void netdev_adjacent_rename_links(struct net_device *dev, char *oldname)
>  	}
>  }
>  
>  void *netdev_lower_dev_get_private(struct net_device *dev,
>  				   struct net_device *lower_dev)
>  {
>  	struct netdev_adjacent *lower;
>  
>  	if (!lower_dev)
>  		return NULL;
>  	lower = __netdev_find_adj(lower_dev, &dev->adj_list.lower);
>  	if (!lower)
>  		return NULL;
>  
>  	return lower->private;
>  }
>  EXPORT_SYMBOL(netdev_lower_dev_get_private);
>  
>  
>  /**
> - * netdev_lower_change - Dispatch event about lower device state change
> + * netdev_lower_state_changed - Dispatch event about lower device state change
>   * @lower_dev: device
>   * @lower_state_info: state to dispatch
>   *
>   * Send NETDEV_CHANGELOWERSTATE to netdev notifiers with info.
>   * The caller must hold the RTNL lock.
>   */
>  void netdev_lower_state_changed(struct net_device *lower_dev,
>  				void *lower_state_info)
>  {
>  	struct netdev_notifier_changelowerstate_info changelowerstate_info = {
>  		.info.dev = lower_dev,
>  	};
>  
>  	ASSERT_RTNL();
>  	changelowerstate_info.lower_state_info = lower_state_info;
>  	call_netdevice_notifiers_info(NETDEV_CHANGELOWERSTATE,
>  				      &changelowerstate_info.info);
>  }
>  EXPORT_SYMBOL(netdev_lower_state_changed);
>  
> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
> index c9a5a3c262c8..ffe3dcc0ebea 100644
> --- a/net/core/skbuff.c
> +++ b/net/core/skbuff.c
> @@ -825,41 +825,41 @@ EXPORT_SYMBOL(skb_tx_error);
>  /**
>   *	consume_skb - free an skbuff
>   *	@skb: buffer to free
>   *
>   *	Drop a ref to the buffer and free it if the usage count has hit zero
>   *	Functions identically to kfree_skb, but kfree_skb assumes that the frame
>   *	is being dropped after a failure and notes that
>   */
>  void consume_skb(struct sk_buff *skb)
>  {
>  	if (!skb_unref(skb))
>  		return;
>  
>  	trace_consume_skb(skb);
>  	__kfree_skb(skb);
>  }
>  EXPORT_SYMBOL(consume_skb);
>  #endif
>  
>  /**
> - *	consume_stateless_skb - free an skbuff, assuming it is stateless
> + *	__consume_stateless_skb - free an skbuff, assuming it is stateless
>   *	@skb: buffer to free
>   *
>   *	Alike consume_skb(), but this variant assumes that this is the last
>   *	skb reference and all the head states have been already dropped
>   */
>  void __consume_stateless_skb(struct sk_buff *skb)
>  {
>  	trace_consume_skb(skb);
>  	skb_release_data(skb);
>  	kfree_skbmem(skb);
>  }
>  
>  void __kfree_skb_flush(void)
>  {
>  	struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache);
>  
>  	/* flush skb_cache if containing objects */
>  	if (nc->skb_count) {
>  		kmem_cache_free_bulk(skbuff_head_cache, nc->skb_count,
>  				     nc->skb_cache);
> diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
> index dac65180c4ef..4106373180c6 100644
> --- a/net/ethernet/eth.c
> +++ b/net/ethernet/eth.c
> @@ -255,41 +255,41 @@ int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh, __be16
>  EXPORT_SYMBOL(eth_header_cache);
>  
>  /**
>   * eth_header_cache_update - update cache entry
>   * @hh: destination cache entry
>   * @dev: network device
>   * @haddr: new hardware address
>   *
>   * Called by Address Resolution module to notify changes in address.
>   */
>  void eth_header_cache_update(struct hh_cache *hh,
>  			     const struct net_device *dev,
>  			     const unsigned char *haddr)
>  {
>  	memcpy(((u8 *) hh->hh_data) + HH_DATA_OFF(sizeof(struct ethhdr)),
>  	       haddr, ETH_ALEN);
>  }
>  EXPORT_SYMBOL(eth_header_cache_update);
>  
>  /**
> - * eth_header_parser_protocol - extract protocol from L2 header
> + * eth_header_parse_protocol - extract protocol from L2 header
>   * @skb: packet to extract protocol from
>   */
>  __be16 eth_header_parse_protocol(const struct sk_buff *skb)
>  {
>  	const struct ethhdr *eth = eth_hdr(skb);
>  
>  	return eth->h_proto;
>  }
>  EXPORT_SYMBOL(eth_header_parse_protocol);
>  
>  /**
>   * eth_prepare_mac_addr_change - prepare for mac change
>   * @dev: network device
>   * @p: socket address
>   */
>  int eth_prepare_mac_addr_change(struct net_device *dev, void *p)
>  {
>  	struct sockaddr *addr = p;
>  
>  	if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev))
> @@ -506,42 +506,42 @@ unsigned char * __weak arch_get_platform_mac_address(void)
>  
>  int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr)
>  {
>  	const unsigned char *addr = NULL;
>  
>  	if (dev->of_node)
>  		addr = of_get_mac_address(dev->of_node);
>  	if (IS_ERR_OR_NULL(addr))
>  		addr = arch_get_platform_mac_address();
>  
>  	if (!addr)
>  		return -ENODEV;
>  
>  	ether_addr_copy(mac_addr, addr);
>  
>  	return 0;
>  }
>  EXPORT_SYMBOL(eth_platform_get_mac_address);
>  
>  /**
> - * Obtain the MAC address from an nvmem cell named 'mac-address' associated
> - * with given device.
> + * nvmem_get_mac_address - Obtain the MAC address from an nvmem cell named
> + * 'mac-address' associated with given device.
>   *
>   * @dev:	Device with which the mac-address cell is associated.
>   * @addrbuf:	Buffer to which the MAC address will be copied on success.
>   *
>   * Returns 0 on success or a negative error number on failure.
>   */
>  int nvmem_get_mac_address(struct device *dev, void *addrbuf)
>  {
>  	struct nvmem_cell *cell;
>  	const void *mac;
>  	size_t len;
>  
>  	cell = nvmem_cell_get(dev, "mac-address");
>  	if (IS_ERR(cell))
>  		return PTR_ERR(cell);
>  
>  	mac = nvmem_cell_read(cell, &len);
>  	nvmem_cell_put(cell);
>  
>  	if (IS_ERR(mac))
> diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
> index eadc0ede928c..8241f5a4a01c 100644
> --- a/net/sunrpc/rpc_pipe.c
> +++ b/net/sunrpc/rpc_pipe.c
> @@ -764,41 +764,42 @@ static struct dentry *rpc_mkdir_populate(struct dentry *parent,
>  
>  static int rpc_rmdir_depopulate(struct dentry *dentry,
>  		void (*depopulate)(struct dentry *))
>  {
>  	struct dentry *parent;
>  	struct inode *dir;
>  	int error;
>  
>  	parent = dget_parent(dentry);
>  	dir = d_inode(parent);
>  	inode_lock_nested(dir, I_MUTEX_PARENT);
>  	if (depopulate != NULL)
>  		depopulate(dentry);
>  	error = __rpc_rmdir(dir, dentry);
>  	inode_unlock(dir);
>  	dput(parent);
>  	return error;
>  }
>  
>  /**
> - * rpc_mkpipe - make an rpc_pipefs file for kernel<->userspace communication
> + * rpc_mkpipe_dentry - make an rpc_pipefs file for kernel<->userspace
> + *		       communication
>   * @parent: dentry of directory to create new "pipe" in
>   * @name: name of pipe
>   * @private: private data to associate with the pipe, for the caller's use
>   * @pipe: &rpc_pipe containing input parameters
>   *
>   * Data is made available for userspace to read by calls to
>   * rpc_queue_upcall().  The actual reads will result in calls to
>   * @ops->upcall, which will be called with the file pointer,
>   * message, and userspace buffer to copy to.
>   *
>   * Writes can come at any time, and do not necessarily have to be
>   * responses to upcalls.  They will result in calls to @msg->downcall.
>   *
>   * The @private argument passed here will be available to all these methods
>   * from the file pointer, via RPC_I(file_inode(file))->private.
>   */
>  struct dentry *rpc_mkpipe_dentry(struct dentry *parent, const char *name,
>  				 void *private, struct rpc_pipe *pipe)
>  {
>  	struct dentry *dentry;
>