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author | Chuck Lever <chuck.lever@oracle.com> | 2008-10-03 12:50:29 -0400 |
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committer | J. Bruce Fields <bfields@citi.umich.edu> | 2008-10-03 17:02:35 -0400 |
commit | 6bfbe8af4674458e6d88aef8f0136bd1b8855b11 (patch) | |
tree | b8305ece04cebae733d619a77c3ff8fdee55e4a2 /fs/lockd/host.c | |
parent | d7d204403b31beb83b1aefef7bd76f5209369555 (diff) | |
download | kernel_samsung_smdk4412-6bfbe8af4674458e6d88aef8f0136bd1b8855b11.tar.gz kernel_samsung_smdk4412-6bfbe8af4674458e6d88aef8f0136bd1b8855b11.tar.bz2 kernel_samsung_smdk4412-6bfbe8af4674458e6d88aef8f0136bd1b8855b11.zip |
lockd: Adjust nlmsvc_lookup_host() to accomodate AF_INET6 addresses
Fix up nlmsvc_lookup_host() to pass AF_INET6 source addresses to
nlm_lookup_host().
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/lockd/host.c')
-rw-r--r-- | fs/lockd/host.c | 47 |
1 files changed, 38 insertions, 9 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c index cbd2398e594..9fd8889097b 100644 --- a/fs/lockd/host.c +++ b/fs/lockd/host.c @@ -304,16 +304,33 @@ struct nlm_host *nlmclnt_lookup_host(const struct sockaddr *sap, return nlm_lookup_host(&ni); } -/* - * Find an NLM client handle in the cache. If there is none, create it. +/** + * nlmsvc_lookup_host - Find an NLM host handle matching a remote client + * @rqstp: incoming NLM request + * @hostname: name of client host + * @hostname_len: length of client hostname + * + * Returns an nlm_host structure that matches the [client address, + * transport protocol, NLM version, client hostname] of the passed-in + * NLM request. If one doesn't already exist in the host cache, a + * new handle is created and returned. + * + * Before possibly creating a new nlm_host, construct a sockaddr + * for a specific source address in case the local system has + * multiple network addresses. The family of the address in + * rq_daddr is guaranteed to be the same as the family of the + * address in rq_addr, so it's safe to use the same family for + * the source address. */ -struct nlm_host * -nlmsvc_lookup_host(struct svc_rqst *rqstp, - const char *hostname, unsigned int hostname_len) +struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, + const char *hostname, + const size_t hostname_len) { - const struct sockaddr_in source = { + struct sockaddr_in sin = { .sin_family = AF_INET, - .sin_addr = rqstp->rq_daddr.addr, + }; + struct sockaddr_in6 sin6 = { + .sin6_family = AF_INET6, }; struct nlm_lookup_host_info ni = { .server = 1, @@ -323,14 +340,26 @@ nlmsvc_lookup_host(struct svc_rqst *rqstp, .version = rqstp->rq_vers, .hostname = hostname, .hostname_len = hostname_len, - .src_sap = (struct sockaddr *)&source, - .src_len = sizeof(source), + .src_len = rqstp->rq_addrlen, }; dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__, (int)hostname_len, hostname, rqstp->rq_vers, (rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp")); + switch (ni.sap->sa_family) { + case AF_INET: + sin.sin_addr.s_addr = rqstp->rq_daddr.addr.s_addr; + ni.src_sap = (struct sockaddr *)&sin; + break; + case AF_INET6: + ipv6_addr_copy(&sin6.sin6_addr, &rqstp->rq_daddr.addr6); + ni.src_sap = (struct sockaddr *)&sin6; + break; + default: + return NULL; + } + return nlm_lookup_host(&ni); } |