Jeff and Chuck, you're OK with the revised version? --b. On Fri, Aug 26, 2011 at 02:58:23PM +0800, Mi Jinlong wrote: > >From 84420475509ccc39ac8899f6f63140879a5278b6 Mon Sep 17 00:00:00 2001 > From: Mi Jinlong <mijinlong@xxxxxxxxxxxxxx> > Date: Mon, 26 Aug 2011 13:22:39 +0800 > Subject: [PATCH v2] 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. > > Signed-off-by: Mi Jinlong <mijinlong@xxxxxxxxxxxxxx> > --- > fs/lockd/host.c | 25 ++----------------------- > fs/nfsd/nfs4state.c | 16 +--------------- > include/linux/sunrpc/clnt.h | 3 ++- > include/linux/sunrpc/svc.h | 30 +++++++++++++++++++++--------- > net/sunrpc/svc_xprt.c | 13 ++----------- > net/sunrpc/svcsock.c | 23 +++++++++++++++++------ > 6 files changed, 45 insertions(+), 65 deletions(-) > > diff --git a/fs/lockd/host.c b/fs/lockd/host.c > index b7c99bf..6f29836 100644 > --- a/fs/lockd/host.c > +++ b/fs/lockd/host.c > @@ -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(); > > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c > index 3787ec1..07a18a5 100644 > --- a/fs/nfsd/nfs4state.c > +++ b/fs/nfsd/nfs4state.c > @@ -1173,20 +1173,6 @@ 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) > { > @@ -1218,7 +1204,7 @@ 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; > diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h > index db7bcaf..1529a80 100644 > --- a/include/linux/sunrpc/clnt.h > +++ b/include/linux/sunrpc/clnt.h > @@ -218,7 +218,8 @@ static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, > { > const struct sockaddr_in6 *sin1 = (const struct sockaddr_in6 *)sap1; > const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2; > - return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr); > + return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr) > + && (sin1->sin6_scope_id == sin2->sin6_scope_id); > } > > static inline bool __rpc_copy_addr6(struct sockaddr *dst, > diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h > index 223588a..3bc0dc9 100644 > --- a/include/linux/sunrpc/svc.h > +++ b/include/linux/sunrpc/svc.h > @@ -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; > diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c > index bd31208..d86bb67 100644 > --- a/net/sunrpc/svc_xprt.c > +++ b/net/sunrpc/svc_xprt.c > @@ -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); > > diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c > index 767d494..dfd686e 100644 > --- a/net/sunrpc/svcsock.c > +++ b/net/sunrpc/svcsock.c > @@ -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 */ > -- > 1.7.6 > > > -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html