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Date: Mon, 10 Dec 2007 13:34:14 -0500
From: "J. Bruce Fields" <bfields@...ldses.org>
To: Aurélien Charbon <aurelien.charbon@....bull.net>
Cc: Neil Brown <neilb@...e.de>, netdev ML <netdev@...r.kernel.org>,
Mailing list NFSv4 <nfsv4@...ux-nfs.org>
Subject: Re: [PATCH] IPv6 support for NFS server
On Mon, Dec 10, 2007 at 07:34:41PM +0100, Aurélien Charbon wrote:
>
> Here is a cleanup for the ip_map caching patch in nfs server.
>
> It prepares for IPv6 text-based mounts and exports.
>
> Tests: tested with only IPv4 network and basic nfs ops (mount, file
> creation and modification)
Thanks! And also tested with an unmodified rpc.mountd?
--b.
>
> -----
>
> Signed-off-by: Aurelien Charbon <aurelien.charbon@...l.net>
>
> diff -p -u -r -N linux-2.6.24-rc4/fs/nfsd/export.c
> linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/export.c
> --- linux-2.6.24-rc4/fs/nfsd/export.c 2007-12-10 16:11:37.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/export.c 2007-12-10
> 17:50:37.000000000 +0100
> @@ -35,6 +35,7 @@
> #include <linux/lockd/bind.h>
> #include <linux/sunrpc/msg_prot.h>
> #include <linux/sunrpc/gss_api.h>
> +#include <net/ipv6.h>
>
> #define NFSDDBG_FACILITY NFSDDBG_EXPORT
>
> @@ -1556,6 +1557,7 @@ exp_addclient(struct nfsctl_client *ncp)
> {
> struct auth_domain *dom;
> int i, err;
> + struct in6_addr addr6;
>
> /* First, consistency check. */
> err = -EINVAL;
> @@ -1574,9 +1576,12 @@ exp_addclient(struct nfsctl_client *ncp)
> goto out_unlock;
>
> /* Insert client into hashtable. */
> - for (i = 0; i < ncp->cl_naddr; i++)
> - auth_unix_add_addr(ncp->cl_addrlist[i], dom);
> -
> + for (i = 0; i < ncp->cl_naddr; i++) {
> + /* Mapping address */
> + ipv6_addr_set(&addr6, 0, 0,
> + htonl(0x0000FFFF), ncp->cl_addrlist[i].s_addr);
> + auth_unix_add_addr(&addr6, dom);
> + }
> auth_unix_forget_old(dom);
> auth_domain_put(dom);
>
> diff -p -u -r -N linux-2.6.24-rc4/fs/nfsd/nfsctl.c
> linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/nfsctl.c
> --- linux-2.6.24-rc4/fs/nfsd/nfsctl.c 2007-12-10 16:11:37.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/nfsctl.c 2007-12-10
> 18:15:22.000000000 +0100
> @@ -37,6 +37,7 @@
> #include <linux/nfsd/syscall.h>
>
> #include <asm/uaccess.h>
> +#include <net/ipv6.h>
>
> /*
> * We have a single directory with 9 nodes in it.
> @@ -222,6 +223,7 @@ static ssize_t write_getfs(struct file *
> struct auth_domain *clp;
> int err = 0;
> struct knfsd_fh *res;
> + struct in6_addr in6;
>
> if (size < sizeof(*data))
> return -EINVAL;
> @@ -236,7 +238,13 @@ static ssize_t write_getfs(struct file *
> res = (struct knfsd_fh*)buf;
>
> exp_readlock();
> - if (!(clp = auth_unix_lookup(sin->sin_addr)))
> +
> + /* IPv6 address mapping */
> + ipv6_addr_set(&in6, 0, 0,
> + htonl(0x0000FFFF),
> + (((struct sockaddr_in *)&data->gd_addr)->sin_addr.s_addr));
> +
> + if (!(clp = auth_unix_lookup(in6)))
> err = -EPERM;
> else {
> err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
> @@ -257,6 +265,7 @@ static ssize_t write_getfd(struct file *
> int err = 0;
> struct knfsd_fh fh;
> char *res;
> + struct in6_addr in6;
>
> if (size < sizeof(*data))
> return -EINVAL;
> @@ -271,7 +280,12 @@ static ssize_t write_getfd(struct file *
> res = buf;
> sin = (struct sockaddr_in *)&data->gd_addr;
> exp_readlock();
> - if (!(clp = auth_unix_lookup(sin->sin_addr)))
> + /* IPv6 address mapping */
> + ipv6_addr_set(&in6, 0, 0,
> + htonl(0x0000FFFF),
> + (((struct sockaddr_in *)&data->gd_addr)->sin_addr.s_addr));
> +
> + if (!(clp = auth_unix_lookup(in6)))
> err = -EPERM;
> else {
> err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
> diff -p -u -r -N linux-2.6.24-rc4/include/linux/sunrpc/svcauth.h
> linux-2.6.24-rc4-IPv6-cache-based/include/linux/sunrpc/svcauth.h
> --- linux-2.6.24-rc4/include/linux/sunrpc/svcauth.h 2007-12-10
> 16:01:43.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/include/linux/sunrpc/svcauth.h
> 2007-12-10 17:09:34.000000000 +0100
> @@ -120,10 +120,10 @@ extern void svc_auth_unregister(rpc_auth
>
> extern struct auth_domain *unix_domain_find(char *name);
> extern void auth_domain_put(struct auth_domain *item);
> -extern int auth_unix_add_addr(struct in_addr addr, struct auth_domain
> *dom);
> +extern int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain
> *dom);
> extern struct auth_domain *auth_domain_lookup(char *name, struct
> auth_domain *new);
> extern struct auth_domain *auth_domain_find(char *name);
> -extern struct auth_domain *auth_unix_lookup(struct in_addr addr);
> +extern struct auth_domain *auth_unix_lookup(struct in6_addr *addr);
> extern int auth_unix_forget_old(struct auth_domain *dom);
> extern void svcauth_unix_purge(void);
> extern void svcauth_unix_info_release(void *);
> diff -p -u -r -N linux-2.6.24-rc4/net/sunrpc/svcauth_unix.c
> linux-2.6.24-rc4-IPv6-cache-based/net/sunrpc/svcauth_unix.c
> --- linux-2.6.24-rc4/net/sunrpc/svcauth_unix.c 2007-12-10
> 16:01:46.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/net/sunrpc/svcauth_unix.c
> 2007-12-10 17:38:50.000000000 +0100
> @@ -11,7 +11,8 @@
> #include <linux/hash.h>
> #include <linux/string.h>
> #include <net/sock.h>
> -
> +#include <net/ipv6.h>
> +#include <linux/kernel.h>
> #define RPCDBG_FACILITY RPCDBG_AUTH
>
>
> @@ -84,7 +85,7 @@ static void svcauth_unix_domain_release(
> struct ip_map {
> struct cache_head h;
> char m_class[8]; /* e.g. "nfsd" */
> - struct in_addr m_addr;
> + struct in6_addr m_addr;
> struct unix_domain *m_client;
> int m_add_change;
> };
> @@ -112,12 +113,19 @@ static inline int hash_ip(__be32 ip)
> return (hash ^ (hash>>8)) & 0xff;
> }
> #endif
> +static inline int hash_ip6(struct in6_addr ip)
> +{
> + return (hash_ip(ip.s6_addr32[0]) ^
> + hash_ip(ip.s6_addr32[1]) ^
> + hash_ip(ip.s6_addr32[2]) ^
> + hash_ip(ip.s6_addr32[3]));
> +}
> static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
> {
> struct ip_map *orig = container_of(corig, struct ip_map, h);
> struct ip_map *new = container_of(cnew, struct ip_map, h);
> return strcmp(orig->m_class, new->m_class) == 0
> - && orig->m_addr.s_addr == new->m_addr.s_addr;
> + && ipv6_addr_equal(&orig->m_addr, &new->m_addr);
> }
> static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
> {
> @@ -125,7 +133,7 @@ static void ip_map_init(struct cache_hea
> struct ip_map *item = container_of(citem, struct ip_map, h);
>
> strcpy(new->m_class, item->m_class);
> - new->m_addr.s_addr = item->m_addr.s_addr;
> + ipv6_addr_copy(&new->m_addr, &item->m_addr);
> }
> static void update(struct cache_head *cnew, struct cache_head *citem)
> {
> @@ -149,22 +157,24 @@ static void ip_map_request(struct cache_
> struct cache_head *h,
> char **bpp, int *blen)
> {
> - char text_addr[20];
> + char text_addr[40];
> struct ip_map *im = container_of(h, struct ip_map, h);
> - __be32 addr = im->m_addr.s_addr;
> -
> - snprintf(text_addr, 20, "%u.%u.%u.%u",
> - ntohl(addr) >> 24 & 0xff,
> - ntohl(addr) >> 16 & 0xff,
> - ntohl(addr) >> 8 & 0xff,
> - ntohl(addr) >> 0 & 0xff);
>
> + if (ipv6_addr_v4mapped(&(im->m_addr))) {
> + snprintf(text_addr, 20, NIPQUAD_FMT,
> + ntohl(im->m_addr.s6_addr32[3]) >> 24 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 16 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 8 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 0 & 0xff);
> + } else {
> + snprintf(text_addr, 40, NIP6_FMT, NIP6(im->m_addr));
> + }
> qword_add(bpp, blen, im->m_class);
> qword_add(bpp, blen, text_addr);
> (*bpp)[-1] = '\n';
> }
>
> -static struct ip_map *ip_map_lookup(char *class, struct in_addr addr);
> +static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr);
> static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom,
> time_t expiry);
>
> static int ip_map_parse(struct cache_detail *cd,
> @@ -175,10 +185,10 @@ static int ip_map_parse(struct cache_det
> * for scratch: */
> char *buf = mesg;
> int len;
> - int b1,b2,b3,b4;
> + int b1, b2, b3, b4, b5, b6, b7, b8;
> char c;
> char class[8];
> - struct in_addr addr;
> + struct in6_addr addr;
> int err;
>
> struct ip_map *ipmp;
> @@ -197,9 +207,26 @@ static int ip_map_parse(struct cache_det
> len = qword_get(&mesg, buf, mlen);
> if (len <= 0) return -EINVAL;
>
> - if (sscanf(buf, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4)
> + if (sscanf(buf, NIPQUAD_FMT "%c", &b1, &b2, &b3, &b4, &c) == 4) {
> + addr.s6_addr32[0] = 0;
> + addr.s6_addr32[1] = 0;
> + addr.s6_addr32[2] = htonl(0xffff);
> + addr.s6_addr32[3] =
> + htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
> + } else if (sscanf(buf, NIP6_FMT "%c",
> + &b1, &b2, &b3, &b4, &b5, &b6, &b7, &b8, &c) == 8) {
> + addr.s6_addr16[0] = htons(b1);
> + addr.s6_addr16[1] = htons(b2);
> + addr.s6_addr16[2] = htons(b3);
> + addr.s6_addr16[3] = htons(b4);
> + addr.s6_addr16[4] = htons(b5);
> + addr.s6_addr16[5] = htons(b6);
> + addr.s6_addr16[6] = htons(b7);
> + addr.s6_addr16[7] = htons(b8);
> + } else
> return -EINVAL;
>
> +
> expiry = get_expiry(&mesg);
> if (expiry ==0)
> return -EINVAL;
> @@ -215,10 +242,7 @@ static int ip_map_parse(struct cache_det
> } else
> dom = NULL;
>
> - addr.s_addr =
> - htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
> -
> - ipmp = ip_map_lookup(class,addr);
> + ipmp = ip_map_lookup(class, &addr);
> if (ipmp) {
> err = ip_map_update(ipmp,
> container_of(dom, struct unix_domain, h),
> @@ -238,7 +262,7 @@ static int ip_map_show(struct seq_file *
> struct cache_head *h)
> {
> struct ip_map *im;
> - struct in_addr addr;
> + struct in6_addr addr;
> char *dom = "-no-domain-";
>
> if (h == NULL) {
> @@ -247,20 +271,24 @@ static int ip_map_show(struct seq_file *
> }
> im = container_of(h, struct ip_map, h);
> /* class addr domain */
> - addr = im->m_addr;
> + ipv6_addr_copy(&addr, &im->m_addr);
>
> if (test_bit(CACHE_VALID, &h->flags) &&
> !test_bit(CACHE_NEGATIVE, &h->flags))
> dom = im->m_client->h.name;
>
> - seq_printf(m, "%s %d.%d.%d.%d %s\n",
> - im->m_class,
> - ntohl(addr.s_addr) >> 24 & 0xff,
> - ntohl(addr.s_addr) >> 16 & 0xff,
> - ntohl(addr.s_addr) >> 8 & 0xff,
> - ntohl(addr.s_addr) >> 0 & 0xff,
> - dom
> - );
> + if (ipv6_addr_v4mapped(&addr)) {
> + seq_printf(m, "%s" NIPQUAD_FMT "%s\n",
> + im->m_class,
> + ntohl(addr.s6_addr32[3]) >> 24 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 16 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 8 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 0 & 0xff,
> + dom);
> + } else {
> + seq_printf(m, "%s" NIP6_FMT "%s\n",
> + im->m_class, NIP6(addr), dom);
> + }
> return 0;
> }
>
> @@ -280,16 +308,16 @@ struct cache_detail ip_map_cache = {
> .alloc = ip_map_alloc,
> };
>
> -static struct ip_map *ip_map_lookup(char *class, struct in_addr addr)
> +static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
> {
> struct ip_map ip;
> struct cache_head *ch;
>
> strcpy(ip.m_class, class);
> - ip.m_addr = addr;
> + ipv6_addr_copy(&ip.m_addr, addr);
> ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h,
> hash_str(class, IP_HASHBITS) ^
> - hash_ip(addr.s_addr));
> + hash_ip6(*addr));
>
> if (ch)
> return container_of(ch, struct ip_map, h);
> @@ -318,14 +346,14 @@ static int ip_map_update(struct ip_map *
> ch = sunrpc_cache_update(&ip_map_cache,
> &ip.h, &ipm->h,
> hash_str(ipm->m_class, IP_HASHBITS) ^
> - hash_ip(ipm->m_addr.s_addr));
> + hash_ip6(ipm->m_addr));
> if (!ch)
> return -ENOMEM;
> cache_put(ch, &ip_map_cache);
> return 0;
> }
>
> -int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom)
> +int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom)
> {
> struct unix_domain *udom;
> struct ip_map *ipmp;
> @@ -352,7 +380,7 @@ int auth_unix_forget_old(struct auth_dom
> return 0;
> }
>
> -struct auth_domain *auth_unix_lookup(struct in_addr addr)
> +struct auth_domain *auth_unix_lookup(struct in6_addr *addr)
> {
> struct ip_map *ipm;
> struct auth_domain *rv;
> @@ -641,9 +669,24 @@ static int unix_gid_find(uid_t uid, stru
> int
> svcauth_unix_set_client(struct svc_rqst *rqstp)
> {
> - struct sockaddr_in *sin = svc_addr_in(rqstp);
> + struct sockaddr_in *sin;
> + struct sockaddr_in6 *sin6, sin6_storage;
> struct ip_map *ipm;
>
> + switch (rqstp->rq_addr.ss_family) {
> + case AF_INET:
> + sin = svc_addr_in(rqstp);
> + sin6 = &sin6_storage;
> + ipv6_addr_set(&sin6->sin6_addr, 0, 0,
> + htonl(0x0000FFFF), sin->sin_addr.s_addr);
> + break;
> + case AF_INET6:
> + sin6 = svc_addr_in6(rqstp);
> + break;
> + default:
> + BUG();
> + }
> +
> rqstp->rq_client = NULL;
> if (rqstp->rq_proc == 0)
> return SVC_OK;
> @@ -651,7 +694,7 @@ svcauth_unix_set_client(struct svc_rqst
> ipm = ip_map_cached_get(rqstp);
> if (ipm == NULL)
> ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class,
> - sin->sin_addr);
> + &sin6->sin6_addr);
>
> if (ipm == NULL)
> return SVC_DENIED;
>
> --
>
> ********************************
> Aurelien Charbon
> Linux NFSv4 team
> Bull SAS
> Echirolles - France
> http://nfsv4.bullopensource.org/
> ********************************
>
> Signed-off-by: Aurelien Charbon <aurelien.charbon@...l.net>
>
> diff -p -u -r -N linux-2.6.24-rc4/fs/nfsd/export.c linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/export.c
> --- linux-2.6.24-rc4/fs/nfsd/export.c 2007-12-10 16:11:37.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/export.c 2007-12-10 17:50:37.000000000 +0100
> @@ -35,6 +35,7 @@
> #include <linux/lockd/bind.h>
> #include <linux/sunrpc/msg_prot.h>
> #include <linux/sunrpc/gss_api.h>
> +#include <net/ipv6.h>
>
> #define NFSDDBG_FACILITY NFSDDBG_EXPORT
>
> @@ -1556,6 +1557,7 @@ exp_addclient(struct nfsctl_client *ncp)
> {
> struct auth_domain *dom;
> int i, err;
> + struct in6_addr addr6;
>
> /* First, consistency check. */
> err = -EINVAL;
> @@ -1574,9 +1576,12 @@ exp_addclient(struct nfsctl_client *ncp)
> goto out_unlock;
>
> /* Insert client into hashtable. */
> - for (i = 0; i < ncp->cl_naddr; i++)
> - auth_unix_add_addr(ncp->cl_addrlist[i], dom);
> -
> + for (i = 0; i < ncp->cl_naddr; i++) {
> + /* Mapping address */
> + ipv6_addr_set(&addr6, 0, 0,
> + htonl(0x0000FFFF), ncp->cl_addrlist[i].s_addr);
> + auth_unix_add_addr(&addr6, dom);
> + }
> auth_unix_forget_old(dom);
> auth_domain_put(dom);
>
> diff -p -u -r -N linux-2.6.24-rc4/fs/nfsd/nfsctl.c linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/nfsctl.c
> --- linux-2.6.24-rc4/fs/nfsd/nfsctl.c 2007-12-10 16:11:37.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/fs/nfsd/nfsctl.c 2007-12-10 18:15:22.000000000 +0100
> @@ -37,6 +37,7 @@
> #include <linux/nfsd/syscall.h>
>
> #include <asm/uaccess.h>
> +#include <net/ipv6.h>
>
> /*
> * We have a single directory with 9 nodes in it.
> @@ -222,6 +223,7 @@ static ssize_t write_getfs(struct file *
> struct auth_domain *clp;
> int err = 0;
> struct knfsd_fh *res;
> + struct in6_addr in6;
>
> if (size < sizeof(*data))
> return -EINVAL;
> @@ -236,7 +238,13 @@ static ssize_t write_getfs(struct file *
> res = (struct knfsd_fh*)buf;
>
> exp_readlock();
> - if (!(clp = auth_unix_lookup(sin->sin_addr)))
> +
> + /* IPv6 address mapping */
> + ipv6_addr_set(&in6, 0, 0,
> + htonl(0x0000FFFF),
> + (((struct sockaddr_in *)&data->gd_addr)->sin_addr.s_addr));
> +
> + if (!(clp = auth_unix_lookup(in6)))
> err = -EPERM;
> else {
> err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
> @@ -257,6 +265,7 @@ static ssize_t write_getfd(struct file *
> int err = 0;
> struct knfsd_fh fh;
> char *res;
> + struct in6_addr in6;
>
> if (size < sizeof(*data))
> return -EINVAL;
> @@ -271,7 +280,12 @@ static ssize_t write_getfd(struct file *
> res = buf;
> sin = (struct sockaddr_in *)&data->gd_addr;
> exp_readlock();
> - if (!(clp = auth_unix_lookup(sin->sin_addr)))
> + /* IPv6 address mapping */
> + ipv6_addr_set(&in6, 0, 0,
> + htonl(0x0000FFFF),
> + (((struct sockaddr_in *)&data->gd_addr)->sin_addr.s_addr));
> +
> + if (!(clp = auth_unix_lookup(in6)))
> err = -EPERM;
> else {
> err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
> diff -p -u -r -N linux-2.6.24-rc4/include/linux/sunrpc/svcauth.h linux-2.6.24-rc4-IPv6-cache-based/include/linux/sunrpc/svcauth.h
> --- linux-2.6.24-rc4/include/linux/sunrpc/svcauth.h 2007-12-10 16:01:43.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/include/linux/sunrpc/svcauth.h 2007-12-10 17:09:34.000000000 +0100
> @@ -120,10 +120,10 @@ extern void svc_auth_unregister(rpc_auth
>
> extern struct auth_domain *unix_domain_find(char *name);
> extern void auth_domain_put(struct auth_domain *item);
> -extern int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom);
> +extern int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom);
> extern struct auth_domain *auth_domain_lookup(char *name, struct auth_domain *new);
> extern struct auth_domain *auth_domain_find(char *name);
> -extern struct auth_domain *auth_unix_lookup(struct in_addr addr);
> +extern struct auth_domain *auth_unix_lookup(struct in6_addr *addr);
> extern int auth_unix_forget_old(struct auth_domain *dom);
> extern void svcauth_unix_purge(void);
> extern void svcauth_unix_info_release(void *);
> diff -p -u -r -N linux-2.6.24-rc4/net/sunrpc/svcauth_unix.c linux-2.6.24-rc4-IPv6-cache-based/net/sunrpc/svcauth_unix.c
> --- linux-2.6.24-rc4/net/sunrpc/svcauth_unix.c 2007-12-10 16:01:46.000000000 +0100
> +++ linux-2.6.24-rc4-IPv6-cache-based/net/sunrpc/svcauth_unix.c 2007-12-10 17:38:50.000000000 +0100
> @@ -11,7 +11,8 @@
> #include <linux/hash.h>
> #include <linux/string.h>
> #include <net/sock.h>
> -
> +#include <net/ipv6.h>
> +#include <linux/kernel.h>
> #define RPCDBG_FACILITY RPCDBG_AUTH
>
>
> @@ -84,7 +85,7 @@ static void svcauth_unix_domain_release(
> struct ip_map {
> struct cache_head h;
> char m_class[8]; /* e.g. "nfsd" */
> - struct in_addr m_addr;
> + struct in6_addr m_addr;
> struct unix_domain *m_client;
> int m_add_change;
> };
> @@ -112,12 +113,19 @@ static inline int hash_ip(__be32 ip)
> return (hash ^ (hash>>8)) & 0xff;
> }
> #endif
> +static inline int hash_ip6(struct in6_addr ip)
> +{
> + return (hash_ip(ip.s6_addr32[0]) ^
> + hash_ip(ip.s6_addr32[1]) ^
> + hash_ip(ip.s6_addr32[2]) ^
> + hash_ip(ip.s6_addr32[3]));
> +}
> static int ip_map_match(struct cache_head *corig, struct cache_head *cnew)
> {
> struct ip_map *orig = container_of(corig, struct ip_map, h);
> struct ip_map *new = container_of(cnew, struct ip_map, h);
> return strcmp(orig->m_class, new->m_class) == 0
> - && orig->m_addr.s_addr == new->m_addr.s_addr;
> + && ipv6_addr_equal(&orig->m_addr, &new->m_addr);
> }
> static void ip_map_init(struct cache_head *cnew, struct cache_head *citem)
> {
> @@ -125,7 +133,7 @@ static void ip_map_init(struct cache_hea
> struct ip_map *item = container_of(citem, struct ip_map, h);
>
> strcpy(new->m_class, item->m_class);
> - new->m_addr.s_addr = item->m_addr.s_addr;
> + ipv6_addr_copy(&new->m_addr, &item->m_addr);
> }
> static void update(struct cache_head *cnew, struct cache_head *citem)
> {
> @@ -149,22 +157,24 @@ static void ip_map_request(struct cache_
> struct cache_head *h,
> char **bpp, int *blen)
> {
> - char text_addr[20];
> + char text_addr[40];
> struct ip_map *im = container_of(h, struct ip_map, h);
> - __be32 addr = im->m_addr.s_addr;
> -
> - snprintf(text_addr, 20, "%u.%u.%u.%u",
> - ntohl(addr) >> 24 & 0xff,
> - ntohl(addr) >> 16 & 0xff,
> - ntohl(addr) >> 8 & 0xff,
> - ntohl(addr) >> 0 & 0xff);
>
> + if (ipv6_addr_v4mapped(&(im->m_addr))) {
> + snprintf(text_addr, 20, NIPQUAD_FMT,
> + ntohl(im->m_addr.s6_addr32[3]) >> 24 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 16 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 8 & 0xff,
> + ntohl(im->m_addr.s6_addr32[3]) >> 0 & 0xff);
> + } else {
> + snprintf(text_addr, 40, NIP6_FMT, NIP6(im->m_addr));
> + }
> qword_add(bpp, blen, im->m_class);
> qword_add(bpp, blen, text_addr);
> (*bpp)[-1] = '\n';
> }
>
> -static struct ip_map *ip_map_lookup(char *class, struct in_addr addr);
> +static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr);
> static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry);
>
> static int ip_map_parse(struct cache_detail *cd,
> @@ -175,10 +185,10 @@ static int ip_map_parse(struct cache_det
> * for scratch: */
> char *buf = mesg;
> int len;
> - int b1,b2,b3,b4;
> + int b1, b2, b3, b4, b5, b6, b7, b8;
> char c;
> char class[8];
> - struct in_addr addr;
> + struct in6_addr addr;
> int err;
>
> struct ip_map *ipmp;
> @@ -197,9 +207,26 @@ static int ip_map_parse(struct cache_det
> len = qword_get(&mesg, buf, mlen);
> if (len <= 0) return -EINVAL;
>
> - if (sscanf(buf, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4)
> + if (sscanf(buf, NIPQUAD_FMT "%c", &b1, &b2, &b3, &b4, &c) == 4) {
> + addr.s6_addr32[0] = 0;
> + addr.s6_addr32[1] = 0;
> + addr.s6_addr32[2] = htonl(0xffff);
> + addr.s6_addr32[3] =
> + htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
> + } else if (sscanf(buf, NIP6_FMT "%c",
> + &b1, &b2, &b3, &b4, &b5, &b6, &b7, &b8, &c) == 8) {
> + addr.s6_addr16[0] = htons(b1);
> + addr.s6_addr16[1] = htons(b2);
> + addr.s6_addr16[2] = htons(b3);
> + addr.s6_addr16[3] = htons(b4);
> + addr.s6_addr16[4] = htons(b5);
> + addr.s6_addr16[5] = htons(b6);
> + addr.s6_addr16[6] = htons(b7);
> + addr.s6_addr16[7] = htons(b8);
> + } else
> return -EINVAL;
>
> +
> expiry = get_expiry(&mesg);
> if (expiry ==0)
> return -EINVAL;
> @@ -215,10 +242,7 @@ static int ip_map_parse(struct cache_det
> } else
> dom = NULL;
>
> - addr.s_addr =
> - htonl((((((b1<<8)|b2)<<8)|b3)<<8)|b4);
> -
> - ipmp = ip_map_lookup(class,addr);
> + ipmp = ip_map_lookup(class, &addr);
> if (ipmp) {
> err = ip_map_update(ipmp,
> container_of(dom, struct unix_domain, h),
> @@ -238,7 +262,7 @@ static int ip_map_show(struct seq_file *
> struct cache_head *h)
> {
> struct ip_map *im;
> - struct in_addr addr;
> + struct in6_addr addr;
> char *dom = "-no-domain-";
>
> if (h == NULL) {
> @@ -247,20 +271,24 @@ static int ip_map_show(struct seq_file *
> }
> im = container_of(h, struct ip_map, h);
> /* class addr domain */
> - addr = im->m_addr;
> + ipv6_addr_copy(&addr, &im->m_addr);
>
> if (test_bit(CACHE_VALID, &h->flags) &&
> !test_bit(CACHE_NEGATIVE, &h->flags))
> dom = im->m_client->h.name;
>
> - seq_printf(m, "%s %d.%d.%d.%d %s\n",
> - im->m_class,
> - ntohl(addr.s_addr) >> 24 & 0xff,
> - ntohl(addr.s_addr) >> 16 & 0xff,
> - ntohl(addr.s_addr) >> 8 & 0xff,
> - ntohl(addr.s_addr) >> 0 & 0xff,
> - dom
> - );
> + if (ipv6_addr_v4mapped(&addr)) {
> + seq_printf(m, "%s" NIPQUAD_FMT "%s\n",
> + im->m_class,
> + ntohl(addr.s6_addr32[3]) >> 24 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 16 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 8 & 0xff,
> + ntohl(addr.s6_addr32[3]) >> 0 & 0xff,
> + dom);
> + } else {
> + seq_printf(m, "%s" NIP6_FMT "%s\n",
> + im->m_class, NIP6(addr), dom);
> + }
> return 0;
> }
>
> @@ -280,16 +308,16 @@ struct cache_detail ip_map_cache = {
> .alloc = ip_map_alloc,
> };
>
> -static struct ip_map *ip_map_lookup(char *class, struct in_addr addr)
> +static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr)
> {
> struct ip_map ip;
> struct cache_head *ch;
>
> strcpy(ip.m_class, class);
> - ip.m_addr = addr;
> + ipv6_addr_copy(&ip.m_addr, addr);
> ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h,
> hash_str(class, IP_HASHBITS) ^
> - hash_ip(addr.s_addr));
> + hash_ip6(*addr));
>
> if (ch)
> return container_of(ch, struct ip_map, h);
> @@ -318,14 +346,14 @@ static int ip_map_update(struct ip_map *
> ch = sunrpc_cache_update(&ip_map_cache,
> &ip.h, &ipm->h,
> hash_str(ipm->m_class, IP_HASHBITS) ^
> - hash_ip(ipm->m_addr.s_addr));
> + hash_ip6(ipm->m_addr));
> if (!ch)
> return -ENOMEM;
> cache_put(ch, &ip_map_cache);
> return 0;
> }
>
> -int auth_unix_add_addr(struct in_addr addr, struct auth_domain *dom)
> +int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom)
> {
> struct unix_domain *udom;
> struct ip_map *ipmp;
> @@ -352,7 +380,7 @@ int auth_unix_forget_old(struct auth_dom
> return 0;
> }
>
> -struct auth_domain *auth_unix_lookup(struct in_addr addr)
> +struct auth_domain *auth_unix_lookup(struct in6_addr *addr)
> {
> struct ip_map *ipm;
> struct auth_domain *rv;
> @@ -641,9 +669,24 @@ static int unix_gid_find(uid_t uid, stru
> int
> svcauth_unix_set_client(struct svc_rqst *rqstp)
> {
> - struct sockaddr_in *sin = svc_addr_in(rqstp);
> + struct sockaddr_in *sin;
> + struct sockaddr_in6 *sin6, sin6_storage;
> struct ip_map *ipm;
>
> + switch (rqstp->rq_addr.ss_family) {
> + case AF_INET:
> + sin = svc_addr_in(rqstp);
> + sin6 = &sin6_storage;
> + ipv6_addr_set(&sin6->sin6_addr, 0, 0,
> + htonl(0x0000FFFF), sin->sin_addr.s_addr);
> + break;
> + case AF_INET6:
> + sin6 = svc_addr_in6(rqstp);
> + break;
> + default:
> + BUG();
> + }
> +
> rqstp->rq_client = NULL;
> if (rqstp->rq_proc == 0)
> return SVC_OK;
> @@ -651,7 +694,7 @@ svcauth_unix_set_client(struct svc_rqst
> ipm = ip_map_cached_get(rqstp);
> if (ipm == NULL)
> ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class,
> - sin->sin_addr);
> + &sin6->sin6_addr);
>
> if (ipm == NULL)
> return SVC_DENIED;
--
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