Re: [RFC v3 16/42] NFS NFSD defining nl4_servers structure needed by both

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On Tue, Jul 11, 2017 at 12:43:50PM -0400, Olga Kornievskaia wrote:
> These structures are needed by COPY_NOTIFY on the client and needed
> by the nfsd as well
> 
> Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
> ---
>  include/linux/nfs4.h | 33 +++++++++++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)
> 
> diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
> index 7262908..4179c78 100644
> --- a/include/linux/nfs4.h
> +++ b/include/linux/nfs4.h
> @@ -15,6 +15,7 @@
>  #include <linux/list.h>
>  #include <linux/uidgid.h>
>  #include <uapi/linux/nfs4.h>
> +#include <linux/sunrpc/msg_prot.h>
>  
>  enum nfs4_acl_whotype {
>  	NFS4_ACL_WHO_NAMED = 0,
> @@ -659,4 +660,36 @@ struct nfs4_op_map {
>  	} u;
>  };
>  
> +struct nfs42_netaddr {
> +	unsigned int	na_netid_len;
> +	char		na_netid[RPCBIND_MAXNETIDLEN + 1];
> +	unsigned int	na_uaddr_len;
> +	char		na_uaddr[RPCBIND_MAXUADDRLEN + 1];
> +};
> +
> +enum netloc_type4 {
> +	NL4_NAME		= 1,
> +	NL4_URL			= 2,
> +	NL4_NETADDR		= 3,
> +};
> +
> +struct nl4_server {
> +	enum netloc_type4	nl4_type;
> +	union {
> +		struct { /* NL4_NAME, NL4_URL */
> +			int	nl4_str_sz;
> +			char	nl4_str[NFS4_OPAQUE_LIMIT + 1];
> +		};
> +		struct nfs42_netaddr	nl4_addr; /* NL4_NETADDR */
> +	} u;
> +};
> +
> +/*  support 1 nl4_server for now */
> +#define NFS42_MAX_SSC_SRC       1

In that case, let's just build that assumption into the data structures
and embed struct nl4_server in nl4_servers and drop the unnecessary
kmalloc()s.

--b.

> +
> +struct nl4_servers {
> +	int			nl_nsvr;
> +	struct nl4_server	*nl_svr;
> +};
> +
>  #endif
> -- 
> 1.8.3.1
> 
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