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Commit 849a1cf1 authored by Mi Jinlong's avatar Mi Jinlong Committed by J. Bruce Fields
Browse files

SUNRPC: Replace svc_addr_u by sockaddr_storage 



For IPv6 local address, lockd can not callback to client for
missing scope id when binding address at inet6_bind:

 324       if (addr_type & IPV6_ADDR_LINKLOCAL) {
 325               if (addr_len >= sizeof(struct sockaddr_in6) &&
 326                   addr->sin6_scope_id) {
 327                       /* Override any existing binding, if another one
 328                        * is supplied by user.
 329                        */
 330                       sk->sk_bound_dev_if = addr->sin6_scope_id;
 331               }
 332
 333               /* Binding to link-local address requires an interface */
 334               if (!sk->sk_bound_dev_if) {
 335                       err = -EINVAL;
 336                       goto out_unlock;
 337               }

Replacing svc_addr_u by sockaddr_storage, let rqstp->rq_daddr contains more info
besides address.

Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
Reviewed-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarMi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent 11fcee02

fs/lockd/host.c

+2 −23
Original line number Diff line number Diff line
@@ -316,14 +316,8 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, 
	struct hlist_node *pos;

	struct nlm_host	*host = NULL;

	struct nsm_handle *nsm = NULL;

	struct sockaddr_in sin = {

		.sin_family	= AF_INET,

	};

	struct sockaddr_in6 sin6 = {

		.sin6_family	= AF_INET6,

	};

	struct sockaddr *src_sap;

	size_t src_len = rqstp->rq_addrlen;

	struct sockaddr *src_sap = svc_daddr(rqstp);

	size_t src_len = rqstp->rq_daddrlen;

	struct nlm_lookup_host_info ni = {

		.server		= 1,

		.sap		= svc_addr(rqstp),
@@ -340,21 +334,6 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp, 


	mutex_lock(&nlm_host_mutex);



	switch (ni.sap->sa_family) {

	case AF_INET:

		sin.sin_addr.s_addr = rqstp->rq_daddr.addr.s_addr;

		src_sap = (struct sockaddr *)&sin;

		break;

	case AF_INET6:

		ipv6_addr_copy(&sin6.sin6_addr, &rqstp->rq_daddr.addr6);

		src_sap = (struct sockaddr *)&sin6;

		break;

	default:

		dprintk("lockd: %s failed; unrecognized address family\n",

			__func__);

		goto out;

	}



	if (time_after_eq(jiffies, next_gc))

		nlm_gc_hosts();

fs/nfsd/nfs4state.c

+1 −15
Original line number Diff line number Diff line
@@ -1257,20 +1257,6 @@ find_unconfirmed_client_by_str(const char *dname, unsigned int hashval) 
	return NULL;

}



static void rpc_svcaddr2sockaddr(struct sockaddr *sa, unsigned short family, union svc_addr_u *svcaddr)

{

	switch (family) {

	case AF_INET:

		((struct sockaddr_in *)sa)->sin_family = AF_INET;

		((struct sockaddr_in *)sa)->sin_addr = svcaddr->addr;

		return;

	case AF_INET6:

		((struct sockaddr_in6 *)sa)->sin6_family = AF_INET6;

		((struct sockaddr_in6 *)sa)->sin6_addr = svcaddr->addr6;

		return;

	}

}



static void

gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_rqst *rqstp)

{
@@ -1302,7 +1288,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_r 


	conn->cb_prog = se->se_callback_prog;

	conn->cb_ident = se->se_callback_ident;

	rpc_svcaddr2sockaddr((struct sockaddr *)&conn->cb_saddr, expected_family, &rqstp->rq_daddr);

	memcpy(&conn->cb_saddr, &rqstp->rq_daddr, rqstp->rq_daddrlen);

	return;

out_err:

	conn->cb_addr.ss_family = AF_UNSPEC;

include/linux/sunrpc/svc.h

+21 −9
Original line number Diff line number Diff line
@@ -212,11 +212,6 @@ static inline void svc_putu32(struct kvec *iov, __be32 val) 
	iov->iov_len += sizeof(__be32);

}



union svc_addr_u {

    struct in_addr	addr;

    struct in6_addr	addr6;

};



/*

 * The context of a single thread, including the request currently being

 * processed.
@@ -225,8 +220,12 @@ struct svc_rqst { 
	struct list_head	rq_list;	/* idle list */

	struct list_head	rq_all;		/* all threads list */

	struct svc_xprt *	rq_xprt;	/* transport ptr */



	struct sockaddr_storage	rq_addr;	/* peer address */

	size_t			rq_addrlen;

	struct sockaddr_storage	rq_daddr;	/* dest addr of request

						 *  - reply from here */

	size_t			rq_daddrlen;



	struct svc_serv *	rq_server;	/* RPC service definition */

	struct svc_pool *	rq_pool;	/* thread pool */
@@ -255,9 +254,6 @@ struct svc_rqst { 
	unsigned short

				rq_secure  : 1;	/* secure port */



	union svc_addr_u	rq_daddr;	/* dest addr of request

						 *  - reply from here */



	void *			rq_argp;	/* decoded arguments */

	void *			rq_resp;	/* xdr'd results */

	void *			rq_auth_data;	/* flavor-specific data */
@@ -300,6 +296,21 @@ static inline struct sockaddr *svc_addr(const struct svc_rqst *rqst) 
	return (struct sockaddr *) &rqst->rq_addr;

}



static inline struct sockaddr_in *svc_daddr_in(const struct svc_rqst *rqst)

{

	return (struct sockaddr_in *) &rqst->rq_daddr;

}



static inline struct sockaddr_in6 *svc_daddr_in6(const struct svc_rqst *rqst)

{

	return (struct sockaddr_in6 *) &rqst->rq_daddr;

}



static inline struct sockaddr *svc_daddr(const struct svc_rqst *rqst)

{

	return (struct sockaddr *) &rqst->rq_daddr;

}



/*

 * Check buffer bounds after decoding arguments

 */
@@ -340,7 +351,8 @@ struct svc_deferred_req { 
	struct svc_xprt		*xprt;

	struct sockaddr_storage	addr;	/* where reply must go */

	size_t			addrlen;

	union svc_addr_u	daddr;	/* where reply must come from */

	struct sockaddr_storage	daddr;	/* where reply must come from */

	size_t			daddrlen;

	struct cache_deferred_req handle;

	size_t			xprt_hlen;

	int			argslen;

net/sunrpc/svc_xprt.c

+2 −11
Original line number Diff line number Diff line
@@ -254,8 +254,6 @@ EXPORT_SYMBOL_GPL(svc_create_xprt); 
 */

void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt)

{

	struct sockaddr *sin;



	memcpy(&rqstp->rq_addr, &xprt->xpt_remote, xprt->xpt_remotelen);

	rqstp->rq_addrlen = xprt->xpt_remotelen;
@@ -263,15 +261,8 @@ void svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt) 
	 * Destination address in request is needed for binding the

	 * source address in RPC replies/callbacks later.

	 */

	sin = (struct sockaddr *)&xprt->xpt_local;

	switch (sin->sa_family) {

	case AF_INET:

		rqstp->rq_daddr.addr = ((struct sockaddr_in *)sin)->sin_addr;

		break;

	case AF_INET6:

		rqstp->rq_daddr.addr6 = ((struct sockaddr_in6 *)sin)->sin6_addr;

		break;

	}

	memcpy(&rqstp->rq_daddr, &xprt->xpt_local, xprt->xpt_locallen);

	rqstp->rq_daddrlen = xprt->xpt_locallen;

}

EXPORT_SYMBOL_GPL(svc_xprt_copy_addrs);

net/sunrpc/svcsock.c

+17 −6
Original line number Diff line number Diff line
@@ -143,19 +143,20 @@ static void svc_set_cmsg_data(struct svc_rqst *rqstp, struct cmsghdr *cmh) 
			cmh->cmsg_level = SOL_IP;

			cmh->cmsg_type = IP_PKTINFO;

			pki->ipi_ifindex = 0;

			pki->ipi_spec_dst.s_addr = rqstp->rq_daddr.addr.s_addr;

			pki->ipi_spec_dst.s_addr =

				 svc_daddr_in(rqstp)->sin_addr.s_addr;

			cmh->cmsg_len = CMSG_LEN(sizeof(*pki));

		}

		break;



	case AF_INET6: {

			struct in6_pktinfo *pki = CMSG_DATA(cmh);

			struct sockaddr_in6 *daddr = svc_daddr_in6(rqstp);



			cmh->cmsg_level = SOL_IPV6;

			cmh->cmsg_type = IPV6_PKTINFO;

			pki->ipi6_ifindex = 0;

			ipv6_addr_copy(&pki->ipi6_addr,

					&rqstp->rq_daddr.addr6);

			pki->ipi6_ifindex = daddr->sin6_scope_id;

			ipv6_addr_copy(&pki->ipi6_addr,	&daddr->sin6_addr);

			cmh->cmsg_len = CMSG_LEN(sizeof(*pki));

		}

		break;
@@ -498,9 +499,13 @@ static int svc_udp_get_dest_address4(struct svc_rqst *rqstp, 
				     struct cmsghdr *cmh)

{

	struct in_pktinfo *pki = CMSG_DATA(cmh);

	struct sockaddr_in *daddr = svc_daddr_in(rqstp);



	if (cmh->cmsg_type != IP_PKTINFO)

		return 0;

	rqstp->rq_daddr.addr.s_addr = pki->ipi_spec_dst.s_addr;



	daddr->sin_family = AF_INET;

	daddr->sin_addr.s_addr = pki->ipi_spec_dst.s_addr;

	return 1;

}
@@ -511,9 +516,14 @@ static int svc_udp_get_dest_address6(struct svc_rqst *rqstp, 
				     struct cmsghdr *cmh)

{

	struct in6_pktinfo *pki = CMSG_DATA(cmh);

	struct sockaddr_in6 *daddr = svc_daddr_in6(rqstp);



	if (cmh->cmsg_type != IPV6_PKTINFO)

		return 0;

	ipv6_addr_copy(&rqstp->rq_daddr.addr6, &pki->ipi6_addr);



	daddr->sin6_family = AF_INET6;

	ipv6_addr_copy(&daddr->sin6_addr, &pki->ipi6_addr);

	daddr->sin6_scope_id = pki->ipi6_ifindex;

	return 1;

}
@@ -614,6 +624,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp) 
		skb_free_datagram_locked(svsk->sk_sk, skb);

		return 0;

	}

	rqstp->rq_daddrlen = svc_addr_len(svc_daddr(rqstp));



	if (skb_is_nonlinear(skb)) {

		/* we have to copy */