From 1ebede86b8abbcf8833830e18e05391758cf2f28 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 12 Aug 2010 17:04:07 +1000 Subject: sunrpc: close connection when a request is irretrievably lost. If we drop a request in the sunrpc layer, either due kmalloc failure, or due to a cache miss when we could not queue the request for later replay, then close the connection to encourage the client to retry sooner. Note that if the drop happens in the NFS layer, NFSERR_JUKEBOX (aka NFS4ERR_DELAY) is returned to guide the client concerning replay. Signed-off-by: NeilBrown Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 207311610988..e91b550bc836 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -674,6 +674,8 @@ static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp) switch (ret) { case -ENOENT: return ERR_PTR(-ENOENT); + case -ETIMEDOUT: + return ERR_PTR(-ESHUTDOWN); case 0: gi = get_group_info(ug->gi); cache_put(&ug->h, &unix_gid_cache); @@ -720,8 +722,9 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) switch (cache_check(&ip_map_cache, &ipm->h, &rqstp->rq_chandle)) { default: BUG(); - case -EAGAIN: case -ETIMEDOUT: + return SVC_CLOSE; + case -EAGAIN: return SVC_DROP; case -ENOENT: return SVC_DENIED; @@ -736,6 +739,8 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) switch (PTR_ERR(gi)) { case -EAGAIN: return SVC_DROP; + case -ESHUTDOWN: + return SVC_CLOSE; case -ENOENT: break; default: @@ -776,7 +781,7 @@ svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp) cred->cr_gid = (gid_t) -1; cred->cr_group_info = groups_alloc(0); if (cred->cr_group_info == NULL) - return SVC_DROP; /* kmalloc failure - client must retry */ + return SVC_CLOSE; /* kmalloc failure - client must retry */ /* Put NULL verifier */ svc_putnl(resv, RPC_AUTH_NULL); @@ -840,7 +845,7 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp) goto badcred; cred->cr_group_info = groups_alloc(slen); if (cred->cr_group_info == NULL) - return SVC_DROP; + return SVC_CLOSE; for (i = 0; i < slen; i++) GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv); if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) { -- cgit v1.2.3 From bf18ab32ff2a50a3d13d559f26f94ecfba131f24 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 27 Sep 2010 13:57:36 +0400 Subject: sunrpc: Pass the ip_map_parse's cd to lower calls The target is to have many ip_map_cache-s in the system. This particular patch handles its usage by the ip_map_parse callback. Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index e91b550bc836..31b99c599e7e 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -178,8 +178,8 @@ static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h) return sunrpc_cache_pipe_upcall(cd, h, ip_map_request); } -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 struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr); +static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time_t expiry); static int ip_map_parse(struct cache_detail *cd, char *mesg, int mlen) @@ -249,9 +249,9 @@ static int ip_map_parse(struct cache_detail *cd, dom = NULL; /* IPv6 scope IDs are ignored for now */ - ipmp = ip_map_lookup(class, &sin6.sin6_addr); + ipmp = __ip_map_lookup(cd, class, &sin6.sin6_addr); if (ipmp) { - err = ip_map_update(ipmp, + err = __ip_map_update(cd, ipmp, container_of(dom, struct unix_domain, h), expiry); } else @@ -309,14 +309,15 @@ struct cache_detail ip_map_cache = { .alloc = ip_map_alloc, }; -static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr) +static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, + struct in6_addr *addr) { struct ip_map ip; struct cache_head *ch; strcpy(ip.m_class, class); ipv6_addr_copy(&ip.m_addr, addr); - ch = sunrpc_cache_lookup(&ip_map_cache, &ip.h, + ch = sunrpc_cache_lookup(cd, &ip.h, hash_str(class, IP_HASHBITS) ^ hash_ip6(*addr)); @@ -326,7 +327,13 @@ static struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr) return NULL; } -static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry) +static inline struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr) +{ + return __ip_map_lookup(&ip_map_cache, class, addr); +} + +static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, + struct unix_domain *udom, time_t expiry) { struct ip_map ip; struct cache_head *ch; @@ -344,16 +351,20 @@ static int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t ex ip.m_add_change++; } ip.h.expiry_time = expiry; - ch = sunrpc_cache_update(&ip_map_cache, - &ip.h, &ipm->h, + ch = sunrpc_cache_update(cd, &ip.h, &ipm->h, hash_str(ipm->m_class, IP_HASHBITS) ^ hash_ip6(ipm->m_addr)); if (!ch) return -ENOMEM; - cache_put(ch, &ip_map_cache); + cache_put(ch, cd); return 0; } +static inline int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry) +{ + return __ip_map_update(&ip_map_cache, ipm, udom, expiry); +} + int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom) { struct unix_domain *udom; -- cgit v1.2.3 From e3bfca01c1ad378deaee598292bcc7ee19024563 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 27 Sep 2010 13:58:42 +0400 Subject: sunrpc: Make xprt auth cache release work with the xprt This is done in order to facilitate getting the ip_map_cache from which to put the ip_map. Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 31b99c599e7e..49e39ff22910 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -472,10 +472,13 @@ ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm) } void -svcauth_unix_info_release(void *info) +svcauth_unix_info_release(struct svc_xprt *xpt) { - struct ip_map *ipm = info; - cache_put(&ipm->h, &ip_map_cache); + struct ip_map *ipm; + + ipm = xpt->xpt_auth_cache; + if (ipm != NULL) + cache_put(&ipm->h, &ip_map_cache); } /**************************************************************************** -- cgit v1.2.3 From 3be4479fdf2fb7eb17a4592917ae4b536058b0c7 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 27 Sep 2010 13:59:13 +0400 Subject: sunrpc: Pass xprt to cached get/put routines They do not require the rqst actually and having the xprt simplifies further patching. Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 49e39ff22910..f4751805ecfe 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -426,10 +426,9 @@ void svcauth_unix_purge(void) EXPORT_SYMBOL_GPL(svcauth_unix_purge); static inline struct ip_map * -ip_map_cached_get(struct svc_rqst *rqstp) +ip_map_cached_get(struct svc_xprt *xprt) { struct ip_map *ipm = NULL; - struct svc_xprt *xprt = rqstp->rq_xprt; if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) { spin_lock(&xprt->xpt_lock); @@ -454,10 +453,8 @@ ip_map_cached_get(struct svc_rqst *rqstp) } static inline void -ip_map_cached_put(struct svc_rqst *rqstp, struct ip_map *ipm) +ip_map_cached_put(struct svc_xprt *xprt, struct ip_map *ipm) { - struct svc_xprt *xprt = rqstp->rq_xprt; - if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) { spin_lock(&xprt->xpt_lock); if (xprt->xpt_auth_cache == NULL) { @@ -707,6 +704,7 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) struct ip_map *ipm; struct group_info *gi; struct svc_cred *cred = &rqstp->rq_cred; + struct svc_xprt *xprt = rqstp->rq_xprt; switch (rqstp->rq_addr.ss_family) { case AF_INET: @@ -725,7 +723,7 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) if (rqstp->rq_proc == 0) return SVC_OK; - ipm = ip_map_cached_get(rqstp); + ipm = ip_map_cached_get(xprt); if (ipm == NULL) ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class, &sin6->sin6_addr); @@ -745,7 +743,7 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) case 0: rqstp->rq_client = &ipm->m_client->h; kref_get(&rqstp->rq_client->ref); - ip_map_cached_put(rqstp, ipm); + ip_map_cached_put(xprt, ipm); break; } -- cgit v1.2.3 From 352114f395bd79353faf0bc1506ead94de393f55 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 27 Sep 2010 13:59:48 +0400 Subject: sunrpc: Add net to pure API calls There are two calls that operate on ip_map_cache and are directly called from the nfsd code. Other places will be handled in a different way. Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index f4751805ecfe..2a76c7cf603e 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -327,7 +327,8 @@ static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, return NULL; } -static inline struct ip_map *ip_map_lookup(char *class, struct in6_addr *addr) +static inline struct ip_map *ip_map_lookup(struct net *net, char *class, + struct in6_addr *addr) { return __ip_map_lookup(&ip_map_cache, class, addr); } @@ -360,12 +361,13 @@ static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, return 0; } -static inline int ip_map_update(struct ip_map *ipm, struct unix_domain *udom, time_t expiry) +static inline int ip_map_update(struct net *net, struct ip_map *ipm, + struct unix_domain *udom, time_t expiry) { return __ip_map_update(&ip_map_cache, ipm, udom, expiry); } -int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom) +int auth_unix_add_addr(struct net *net, struct in6_addr *addr, struct auth_domain *dom) { struct unix_domain *udom; struct ip_map *ipmp; @@ -373,10 +375,10 @@ int auth_unix_add_addr(struct in6_addr *addr, struct auth_domain *dom) if (dom->flavour != &svcauth_unix) return -EINVAL; udom = container_of(dom, struct unix_domain, h); - ipmp = ip_map_lookup("nfsd", addr); + ipmp = ip_map_lookup(net, "nfsd", addr); if (ipmp) - return ip_map_update(ipmp, udom, NEVER); + return ip_map_update(net, ipmp, udom, NEVER); else return -ENOMEM; } @@ -394,12 +396,12 @@ int auth_unix_forget_old(struct auth_domain *dom) } EXPORT_SYMBOL_GPL(auth_unix_forget_old); -struct auth_domain *auth_unix_lookup(struct in6_addr *addr) +struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr) { struct ip_map *ipm; struct auth_domain *rv; - ipm = ip_map_lookup("nfsd", addr); + ipm = ip_map_lookup(net, "nfsd", addr); if (!ipm) return NULL; @@ -725,7 +727,7 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) ipm = ip_map_cached_get(xprt); if (ipm == NULL) - ipm = ip_map_lookup(rqstp->rq_server->sv_program->pg_class, + ipm = ip_map_lookup(&init_net, rqstp->rq_server->sv_program->pg_class, &sin6->sin6_addr); if (ipm == NULL) -- cgit v1.2.3 From 90d51b02fd702d969eb05bd9d4ecc954759fbe23 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Mon, 27 Sep 2010 14:02:29 +0400 Subject: sunrpc: Make the ip_map_cache be per-net Everything that is required for that already exists: * the per-net cache registration with respective proc entries * the context (struct net) is available in all the users Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 122 +++++++++++++++++++++++++++++++++++----------- 1 file changed, 94 insertions(+), 28 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 2a76c7cf603e..8b378f91f255 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -18,6 +18,8 @@ #include +#include "netns.h" + /* * AUTHUNIX and AUTHNULL credentials are both handled here. * AUTHNULL is treated just like AUTHUNIX except that the uid/gid @@ -92,7 +94,6 @@ struct ip_map { struct unix_domain *m_client; int m_add_change; }; -static struct cache_head *ip_table[IP_HASHMAX]; static void ip_map_put(struct kref *kref) { @@ -294,21 +295,6 @@ static int ip_map_show(struct seq_file *m, } -struct cache_detail ip_map_cache = { - .owner = THIS_MODULE, - .hash_size = IP_HASHMAX, - .hash_table = ip_table, - .name = "auth.unix.ip", - .cache_put = ip_map_put, - .cache_upcall = ip_map_upcall, - .cache_parse = ip_map_parse, - .cache_show = ip_map_show, - .match = ip_map_match, - .init = ip_map_init, - .update = update, - .alloc = ip_map_alloc, -}; - static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr) { @@ -330,7 +316,10 @@ static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, static inline struct ip_map *ip_map_lookup(struct net *net, char *class, struct in6_addr *addr) { - return __ip_map_lookup(&ip_map_cache, class, addr); + struct sunrpc_net *sn; + + sn = net_generic(net, sunrpc_net_id); + return __ip_map_lookup(sn->ip_map_cache, class, addr); } static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, @@ -364,7 +353,10 @@ static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, static inline int ip_map_update(struct net *net, struct ip_map *ipm, struct unix_domain *udom, time_t expiry) { - return __ip_map_update(&ip_map_cache, ipm, udom, expiry); + struct sunrpc_net *sn; + + sn = net_generic(net, sunrpc_net_id); + return __ip_map_update(sn->ip_map_cache, ipm, udom, expiry); } int auth_unix_add_addr(struct net *net, struct in6_addr *addr, struct auth_domain *dom) @@ -400,12 +392,14 @@ struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr) { struct ip_map *ipm; struct auth_domain *rv; + struct sunrpc_net *sn; + sn = net_generic(net, sunrpc_net_id); ipm = ip_map_lookup(net, "nfsd", addr); if (!ipm) return NULL; - if (cache_check(&ip_map_cache, &ipm->h, NULL)) + if (cache_check(sn->ip_map_cache, &ipm->h, NULL)) return NULL; if ((ipm->m_client->addr_changes - ipm->m_add_change) >0) { @@ -416,14 +410,21 @@ struct auth_domain *auth_unix_lookup(struct net *net, struct in6_addr *addr) rv = &ipm->m_client->h; kref_get(&rv->ref); } - cache_put(&ipm->h, &ip_map_cache); + cache_put(&ipm->h, sn->ip_map_cache); return rv; } EXPORT_SYMBOL_GPL(auth_unix_lookup); void svcauth_unix_purge(void) { - cache_purge(&ip_map_cache); + struct net *net; + + for_each_net(net) { + struct sunrpc_net *sn; + + sn = net_generic(net, sunrpc_net_id); + cache_purge(sn->ip_map_cache); + } } EXPORT_SYMBOL_GPL(svcauth_unix_purge); @@ -431,6 +432,7 @@ static inline struct ip_map * ip_map_cached_get(struct svc_xprt *xprt) { struct ip_map *ipm = NULL; + struct sunrpc_net *sn; if (test_bit(XPT_CACHE_AUTH, &xprt->xpt_flags)) { spin_lock(&xprt->xpt_lock); @@ -442,9 +444,10 @@ ip_map_cached_get(struct svc_xprt *xprt) * remembered, e.g. by a second mount from the * same IP address. */ + sn = net_generic(xprt->xpt_net, sunrpc_net_id); xprt->xpt_auth_cache = NULL; spin_unlock(&xprt->xpt_lock); - cache_put(&ipm->h, &ip_map_cache); + cache_put(&ipm->h, sn->ip_map_cache); return NULL; } cache_get(&ipm->h); @@ -466,8 +469,12 @@ ip_map_cached_put(struct svc_xprt *xprt, struct ip_map *ipm) } spin_unlock(&xprt->xpt_lock); } - if (ipm) - cache_put(&ipm->h, &ip_map_cache); + if (ipm) { + struct sunrpc_net *sn; + + sn = net_generic(xprt->xpt_net, sunrpc_net_id); + cache_put(&ipm->h, sn->ip_map_cache); + } } void @@ -476,8 +483,12 @@ svcauth_unix_info_release(struct svc_xprt *xpt) struct ip_map *ipm; ipm = xpt->xpt_auth_cache; - if (ipm != NULL) - cache_put(&ipm->h, &ip_map_cache); + if (ipm != NULL) { + struct sunrpc_net *sn; + + sn = net_generic(xpt->xpt_net, sunrpc_net_id); + cache_put(&ipm->h, sn->ip_map_cache); + } } /**************************************************************************** @@ -707,6 +718,8 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) struct group_info *gi; struct svc_cred *cred = &rqstp->rq_cred; struct svc_xprt *xprt = rqstp->rq_xprt; + struct net *net = xprt->xpt_net; + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); switch (rqstp->rq_addr.ss_family) { case AF_INET: @@ -727,13 +740,13 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) ipm = ip_map_cached_get(xprt); if (ipm == NULL) - ipm = ip_map_lookup(&init_net, rqstp->rq_server->sv_program->pg_class, + ipm = __ip_map_lookup(sn->ip_map_cache, rqstp->rq_server->sv_program->pg_class, &sin6->sin6_addr); if (ipm == NULL) return SVC_DENIED; - switch (cache_check(&ip_map_cache, &ipm->h, &rqstp->rq_chandle)) { + switch (cache_check(sn->ip_map_cache, &ipm->h, &rqstp->rq_chandle)) { default: BUG(); case -ETIMEDOUT: @@ -905,3 +918,56 @@ struct auth_ops svcauth_unix = { .set_client = svcauth_unix_set_client, }; +int ip_map_cache_create(struct net *net) +{ + int err = -ENOMEM; + struct cache_detail *cd; + struct cache_head **tbl; + struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); + + cd = kzalloc(sizeof(struct cache_detail), GFP_KERNEL); + if (cd == NULL) + goto err_cd; + + tbl = kzalloc(IP_HASHMAX * sizeof(struct cache_head *), GFP_KERNEL); + if (tbl == NULL) + goto err_tbl; + + cd->owner = THIS_MODULE, + cd->hash_size = IP_HASHMAX, + cd->hash_table = tbl, + cd->name = "auth.unix.ip", + cd->cache_put = ip_map_put, + cd->cache_upcall = ip_map_upcall, + cd->cache_parse = ip_map_parse, + cd->cache_show = ip_map_show, + cd->match = ip_map_match, + cd->init = ip_map_init, + cd->update = update, + cd->alloc = ip_map_alloc, + + err = cache_register_net(cd, net); + if (err) + goto err_reg; + + sn->ip_map_cache = cd; + return 0; + +err_reg: + kfree(tbl); +err_tbl: + kfree(cd); +err_cd: + return err; +} + +void ip_map_cache_destroy(struct net *net) +{ + struct sunrpc_net *sn; + + sn = net_generic(net, sunrpc_net_id); + cache_purge(sn->ip_map_cache); + cache_unregister_net(sn->ip_map_cache, net); + kfree(sn->ip_map_cache->hash_table); + kfree(sn->ip_map_cache); +} -- cgit v1.2.3 From 70dc78da2cc76e7804c597fea3a0aff67ec8d7ad Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Tue, 5 Oct 2010 20:48:02 +0400 Subject: sunrpc: Use helper to set v4 mapped addr in ip_map_parse Signed-off-by: Pavel Emelyanov Signed-off-by: J. Bruce Fields --- net/sunrpc/svcauth_unix.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'net/sunrpc/svcauth_unix.c') diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 8b378f91f255..560677d187f1 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -220,10 +220,9 @@ static int ip_map_parse(struct cache_detail *cd, switch (address.sa.sa_family) { case AF_INET: /* Form a mapped IPv4 address in sin6 */ - memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = AF_INET6; - sin6.sin6_addr.s6_addr32[2] = htonl(0xffff); - sin6.sin6_addr.s6_addr32[3] = address.s4.sin_addr.s_addr; + ipv6_addr_set_v4mapped(address.s4.sin_addr.s_addr, + &sin6.sin6_addr); break; #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) case AF_INET6: -- cgit v1.2.3