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SUNRPC: Use "sockaddr_storage" for storing RPC client's remote peer address

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IPv6 addresses are big (128 bytes).  Now that no RPC client consumers treat
the addr field in rpc_xprt structs as an opaque, and access it only via the
API calls, we can safely widen the field in the rpc_xprt struct to
accomodate larger addresses.

Test plan:
Compile kernel with CONFIG_NFS enabled.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2006-08-22 20:06:19 -04:00 committed by Trond Myklebust
parent e7f7865743
commit c4efcb1d3e
4 changed files with 15 additions and 8 deletions
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3
include/linux/sunrpc/xprt.h
View file

@ -134,7 +134,8 @@ struct rpc_xprt {
struct sock * inet; /* INET layer */
struct rpc_timeout timeout; /* timeout parms */
struct sockaddr_in addr; /* server address */
struct sockaddr_storage addr; /* server address */
size_t addrlen; /* size of server address */
int prot; /* IP protocol */
unsigned long cong; /* current congestion */

2
net/sunrpc/clnt.c
View file

@ -550,7 +550,7 @@ size_t rpc_peeraddr(struct rpc_clnt *clnt, struct sockaddr *buf, size_t bufsize)
if (bytes > bufsize)
bytes = bufsize;
memcpy(buf, &clnt->cl_xprt->addr, bytes);
return sizeof(xprt->addr);
return xprt->addrlen;
}
EXPORT_SYMBOL(rpc_peeraddr);

3
net/sunrpc/xprt.c
View file

@ -896,7 +896,8 @@ static struct rpc_xprt *xprt_setup(int proto, struct sockaddr_in *ap, struct rpc
if ((xprt = kzalloc(sizeof(struct rpc_xprt), GFP_KERNEL)) == NULL)
return ERR_PTR(-ENOMEM);
xprt->addr = *ap;
memcpy(&xprt->addr, ap, sizeof(*ap));
xprt->addrlen = sizeof(*ap);
switch (proto) {
case IPPROTO_UDP:

15
net/sunrpc/xprtsock.c
View file

@ -341,7 +341,7 @@ static int xs_udp_send_request(struct rpc_task *task)
req->rq_xtime = jiffies;
status = xs_sendpages(xprt->sock, (struct sockaddr *) &xprt->addr,
sizeof(xprt->addr), xdr, req->rq_bytes_sent);
xprt->addrlen, xdr, req->rq_bytes_sent);
dprintk("RPC: xs_udp_send_request(%u) = %d\n",
xdr->len - req->rq_bytes_sent, status);
@ -1027,8 +1027,11 @@ static char *xs_print_peer_address(struct rpc_xprt *xprt, enum rpc_display_forma
*/
static void xs_set_port(struct rpc_xprt *xprt, unsigned short port)
{
struct sockaddr_in *sap = (struct sockaddr_in *) &xprt->addr;
dprintk("RPC: setting port for xprt %p to %u\n", xprt, port);
xprt->addr.sin_port = htons(port);
sap->sin_port = htons(port);
}
static int xs_bindresvport(struct rpc_xprt *xprt, struct socket *sock)
@ -1209,7 +1212,7 @@ static void xs_tcp_connect_worker(void *args)
xprt->stat.connect_count++;
xprt->stat.connect_start = jiffies;
status = sock->ops->connect(sock, (struct sockaddr *) &xprt->addr,
sizeof(xprt->addr), O_NONBLOCK);
xprt->addrlen, O_NONBLOCK);
dprintk("RPC: %p connect status %d connected %d sock state %d\n",
xprt, -status, xprt_connected(xprt), sock->sk->sk_state);
if (status < 0) {
@ -1359,6 +1362,7 @@ static struct rpc_xprt_ops xs_tcp_ops = {
int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to)
{
size_t slot_table_size;
struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr;
xprt->max_reqs = xprt_udp_slot_table_entries;
slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]);
@ -1366,7 +1370,7 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to)
if (xprt->slot == NULL)
return -ENOMEM;
if (ntohs(xprt->addr.sin_port) != 0)
if (ntohs(addr->sin_port != 0))
xprt_set_bound(xprt);
xprt->port = xs_get_random_port();
@ -1405,6 +1409,7 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to)
int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to)
{
size_t slot_table_size;
struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr;
xprt->max_reqs = xprt_tcp_slot_table_entries;
slot_table_size = xprt->max_reqs * sizeof(xprt->slot[0]);
@ -1412,7 +1417,7 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to)
if (xprt->slot == NULL)
return -ENOMEM;
if (ntohs(xprt->addr.sin_port) != 0)
if (ntohs(addr->sin_port) != 0)
xprt_set_bound(xprt);
xprt->port = xs_get_random_port();