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1b340d0118
This patch implements DNS resolver cache creation and registration for each alive network namespace context. This was done by registering NFS per-net operations, responsible for DNS cache allocation/register and unregister/destructioning instead of initialization and destruction of static "nfs_dns_resolve" cache detail (this one was removed). Pointer to network dns resolver cache is stored in new per-net "nfs_net" structure. This patch also changes nfs_dns_resolve_name() function prototype (and it's calls) by adding network pointer parameter, which is used to get proper DNS resolver cache pointer for do_cache_lookup_wait() call. Note: empty nfs_dns_resolver_init() and nfs_dns_resolver_destroy() functions will be used in next patch in the series. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
37 lines
812 B
C
37 lines
812 B
C
/*
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* Resolve DNS hostnames into valid ip addresses
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*/
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#ifndef __LINUX_FS_NFS_DNS_RESOLVE_H
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#define __LINUX_FS_NFS_DNS_RESOLVE_H
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#define NFS_DNS_HOSTNAME_MAXLEN (128)
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#ifdef CONFIG_NFS_USE_KERNEL_DNS
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static inline int nfs_dns_resolver_init(void)
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{
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return 0;
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}
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static inline void nfs_dns_resolver_destroy(void)
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{}
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static inline int nfs_dns_resolver_cache_init(struct net *net)
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{
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return 0;
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}
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static inline void nfs_dns_resolver_cache_destroy(struct net *net)
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{}
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#else
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extern int nfs_dns_resolver_init(void);
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extern void nfs_dns_resolver_destroy(void);
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extern int nfs_dns_resolver_cache_init(struct net *net);
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extern void nfs_dns_resolver_cache_destroy(struct net *net);
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#endif
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extern ssize_t nfs_dns_resolve_name(struct net *net, char *name,
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size_t namelen, struct sockaddr *sa, size_t salen);
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#endif
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