diff options
| author | Jeff Layton <jlayton@redhat.com> | 2009-08-14 20:57:59 +0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-08-21 19:27:44 +0400 |
| commit | fbf4665f41b02e757ab9d9198df65e319388e728 (patch) | |
| tree | ec0b8b4f3809ee38088504bf51440ee12f501085 /include/linux/sunrpc | |
| parent | 7077ecbabd626cce1fcf5cc9766c83ec04d919f9 (diff) | |
| download | linux-fbf4665f41b02e757ab9d9198df65e319388e728.tar.xz | |
nfsd: populate sin6_scope_id on callback address with scopeid from rq_addr on SETCLIENTID call
When a SETCLIENTID call comes in, one of the args given is the svc_rqst.
This struct contains an rq_addr field which holds the address that sent
the call. If this is an IPv6 address, then we can use the sin6_scope_id
field in this address to populate the sin6_scope_id field in the
callback address.
AFAICT, the rq_addr.sin6_scope_id is non-zero if and only if the client
mounted the server's link-local address.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/clnt.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 044f531aee70..3d025588e56e 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -286,5 +286,20 @@ static inline bool rpc_copy_addr(struct sockaddr *dst, return false; } +/** + * rpc_get_scope_id - return scopeid for a given sockaddr + * @sa: sockaddr to get scopeid from + * + * Returns the value of the sin6_scope_id for AF_INET6 addrs, or 0 if + * not an AF_INET6 address. + */ +static inline u32 rpc_get_scope_id(const struct sockaddr *sa) +{ + if (sa->sa_family != AF_INET6) + return 0; + + return ((struct sockaddr_in6 *) sa)->sin6_scope_id; +} + #endif /* __KERNEL__ */ #endif /* _LINUX_SUNRPC_CLNT_H */ |