[PATCH] knfsd: SUNRPC: Provide room in svc_rqst for larger addresses
Expand the rq_addr field to allow it to contain larger addresses.
Specifically, we replace a 'sockaddr_in' with a 'sockaddr_storage', then
everywhere the 'sockaddr_in' was referenced, we use instead an accessor
function (svc_addr_in) which safely casts the _storage to _in.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 6680e0f..b116696 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -153,7 +153,7 @@
*/
char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
{
- return __svc_print_addr((struct sockaddr *) &rqstp->rq_addr, buf, len);
+ return __svc_print_addr(svc_addr(rqstp), buf, len);
}
EXPORT_SYMBOL_GPL(svc_print_addr);
@@ -473,7 +473,7 @@
/* set the source and destination */
struct msghdr msg;
msg.msg_name = &rqstp->rq_addr;
- msg.msg_namelen = sizeof(rqstp->rq_addr);
+ msg.msg_namelen = rqstp->rq_addrlen;
msg.msg_iov = NULL;
msg.msg_iovlen = 0;
msg.msg_flags = MSG_MORE;
@@ -696,6 +696,7 @@
static int
svc_udp_recvfrom(struct svc_rqst *rqstp)
{
+ struct sockaddr_in *sin = svc_addr_in(rqstp);
struct svc_sock *svsk = rqstp->rq_sock;
struct svc_serv *serv = svsk->sk_server;
struct sk_buff *skb;
@@ -756,9 +757,12 @@
rqstp->rq_prot = IPPROTO_UDP;
/* Get sender address */
- rqstp->rq_addr.sin_family = AF_INET;
- rqstp->rq_addr.sin_port = skb->h.uh->source;
- rqstp->rq_addr.sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_family = AF_INET;
+ sin->sin_port = skb->h.uh->source;
+ sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ rqstp->rq_addrlen = sizeof(struct sockaddr_in);
+
+ /* Remember which interface received this request */
rqstp->rq_daddr = skb->nh.iph->daddr;
if (skb_is_nonlinear(skb)) {
@@ -1298,7 +1302,8 @@
int
svc_recv(struct svc_rqst *rqstp, long timeout)
{
- struct svc_sock *svsk =NULL;
+ struct svc_sock *svsk = NULL;
+ struct sockaddr_in *sin = svc_addr_in(rqstp);
struct svc_serv *serv = rqstp->rq_server;
struct svc_pool *pool = rqstp->rq_pool;
int len, i;
@@ -1395,7 +1400,7 @@
svsk->sk_lastrecv = get_seconds();
clear_bit(SK_OLD, &svsk->sk_flags);
- rqstp->rq_secure = ntohs(rqstp->rq_addr.sin_port) < 1024;
+ rqstp->rq_secure = ntohs(sin->sin_port) < PROT_SOCK;
rqstp->rq_chandle.defer = svc_defer;
if (serv->sv_stats)