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NLM: fix source address of callback to client

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Use the destination address of the original NLM request as the
source address in callbacks to the client.

Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Frank van Maarseveen 2007-07-09 22:25:29 +02:00 committed by Trond Myklebust
parent d3bc9a1deb
commit c98451bdb2
2 changed files with 20 additions and 8 deletions
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27
fs/lockd/host.c
View File

@ -44,9 +44,8 @@ static struct nsm_handle * nsm_find(const struct sockaddr_in *sin,
*/ */
static struct nlm_host * static struct nlm_host *
nlm_lookup_host(int server, const struct sockaddr_in *sin, nlm_lookup_host(int server, const struct sockaddr_in *sin,
int proto, int version, int proto, int version, const char *hostname,
const char *hostname, int hostname_len, const struct sockaddr_in *ssin)
int hostname_len)
{ {
struct hlist_head *chain; struct hlist_head *chain;
struct hlist_node *pos; struct hlist_node *pos;
@ -54,7 +53,9 @@ nlm_lookup_host(int server, const struct sockaddr_in *sin,
struct nsm_handle *nsm = NULL; struct nsm_handle *nsm = NULL;
int hash; int hash;
dprintk("lockd: nlm_lookup_host(%u.%u.%u.%u, p=%d, v=%d, my role=%s, name=%.*s)\n", dprintk("lockd: nlm_lookup_host("NIPQUAD_FMT"->"NIPQUAD_FMT
", p=%d, v=%d, my role=%s, name=%.*s)\n",
NIPQUAD(ssin->sin_addr.s_addr),
NIPQUAD(sin->sin_addr.s_addr), proto, version, NIPQUAD(sin->sin_addr.s_addr), proto, version,
server? "server" : "client", server? "server" : "client",
hostname_len, hostname_len,
@ -91,6 +92,8 @@ nlm_lookup_host(int server, const struct sockaddr_in *sin,
continue; continue;
if (host->h_server != server) if (host->h_server != server)
continue; continue;
if (!nlm_cmp_addr(&host->h_saddr, ssin))
continue;
/* Move to head of hash chain. */ /* Move to head of hash chain. */
hlist_del(&host->h_hash); hlist_del(&host->h_hash);
@ -118,6 +121,7 @@ nlm_lookup_host(int server, const struct sockaddr_in *sin,
host->h_name = nsm->sm_name; host->h_name = nsm->sm_name;
host->h_addr = *sin; host->h_addr = *sin;
host->h_addr.sin_port = 0; /* ouch! */ host->h_addr.sin_port = 0; /* ouch! */
host->h_saddr = *ssin;
host->h_version = version; host->h_version = version;
host->h_proto = proto; host->h_proto = proto;
host->h_rpcclnt = NULL; host->h_rpcclnt = NULL;
@ -174,8 +178,10 @@ struct nlm_host *
nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version, nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version,
const char *hostname, int hostname_len) const char *hostname, int hostname_len)
{ {
struct sockaddr_in ssin = {0};
return nlm_lookup_host(0, sin, proto, version, return nlm_lookup_host(0, sin, proto, version,
hostname, hostname_len); hostname, hostname_len, &ssin);
} }
/* /*
@ -185,9 +191,12 @@ struct nlm_host *
nlmsvc_lookup_host(struct svc_rqst *rqstp, nlmsvc_lookup_host(struct svc_rqst *rqstp,
const char *hostname, int hostname_len) const char *hostname, int hostname_len)
{ {
struct sockaddr_in ssin = {0};
ssin.sin_addr = rqstp->rq_daddr.addr;
return nlm_lookup_host(1, svc_addr_in(rqstp), return nlm_lookup_host(1, svc_addr_in(rqstp),
rqstp->rq_prot, rqstp->rq_vers, rqstp->rq_prot, rqstp->rq_vers,
hostname, hostname_len); hostname, hostname_len, &ssin);
} }
/* /*
@ -198,8 +207,9 @@ nlm_bind_host(struct nlm_host *host)
{ {
struct rpc_clnt *clnt; struct rpc_clnt *clnt;
dprintk("lockd: nlm_bind_host(%08x)\n", dprintk("lockd: nlm_bind_host("NIPQUAD_FMT"->"NIPQUAD_FMT")\n",
(unsigned)ntohl(host->h_addr.sin_addr.s_addr)); NIPQUAD(host->h_saddr.sin_addr),
NIPQUAD(host->h_addr.sin_addr));
/* Lock host handle */ /* Lock host handle */
mutex_lock(&host->h_mutex); mutex_lock(&host->h_mutex);
@ -226,6 +236,7 @@ nlm_bind_host(struct nlm_host *host)
.protocol = host->h_proto, .protocol = host->h_proto,
.address = (struct sockaddr *)&host->h_addr, .address = (struct sockaddr *)&host->h_addr,
.addrsize = sizeof(host->h_addr), .addrsize = sizeof(host->h_addr),
.saddress = (struct sockaddr *)&host->h_saddr,
.timeout = &timeparms, .timeout = &timeparms,
.servername = host->h_name, .servername = host->h_name,
.program = &nlm_program, .program = &nlm_program,

1
include/linux/lockd/lockd.h
View File

@ -39,6 +39,7 @@
struct nlm_host { struct nlm_host {
struct hlist_node h_hash; /* doubly linked list */ struct hlist_node h_hash; /* doubly linked list */
struct sockaddr_in h_addr; /* peer address */ struct sockaddr_in h_addr; /* peer address */
struct sockaddr_in h_saddr; /* our address (optional) */
struct rpc_clnt * h_rpcclnt; /* RPC client to talk to peer */ struct rpc_clnt * h_rpcclnt; /* RPC client to talk to peer */
char * h_name; /* remote hostname */ char * h_name; /* remote hostname */
u32 h_version; /* interface version */ u32 h_version; /* interface version */