The framework to add this is all in place. Now, add the code to allow
support for establishing a callback channel on an IPv6 socket.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 76 ++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 66 insertions(+), 10 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index c50f020..4e9d5d9 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -55,6 +55,8 @@
#include <linux/lockd/bind.h>
#include <linux/module.h>
#include <linux/sunrpc/svcauth_gss.h>
+#include <linux/inet.h>
+#include <net/ipv6.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -988,19 +990,58 @@ parse_ipv4(unsigned int addrlen, char *addr, struct sockaddr_in *s4)
return parse_port(addrlen, addr, &s4->sin_port);
}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static int
+parse_ipv6(unsigned int addrlen, char *addr, struct sockaddr_in6 *s6)
+{
+ char *dot;
+
+ s6->sin6_family = AF_INET6;
+
+ if (!in6_pton(addr, addrlen, (u8 *) &s6->sin6_addr.s6_addr, '.',
+ (const char **) &dot))
+ return 0;
+
+ if ((addr + addrlen) <= dot)
+ return 0;
+
+ if (*dot++ != '.')
+ return 0;
+
+ return parse_port(addrlen - (dot - addr), dot, &s6->sin6_port);
+}
+#else /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+static int
+parse_ipv6(unsigned int addrlen, char *addr, struct sockaddr_in6 *s6)
+{
+ return 0;
+}
+#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+
static void
gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
- /* Currently, we only support tcp for the callback channel */
- if ((se->se_callback_netid_len != 3) || memcmp((char *)se->se_callback_netid_val, "tcp", 3))
+ /* Currently, we only support tcp and tcp6 for the callback channel */
+ if (se->se_callback_netid_len == 3 &&
+ !memcmp(se->se_callback_netid_val, "tcp", 3)) {
+ if (!parse_ipv4(se->se_callback_addr_len,
+ se->se_callback_addr_val,
+ (struct sockaddr_in *) &cb->cb_addr))
+ goto out_err;
+ cb->cb_addrlen = sizeof(struct sockaddr_in);
+ } else if (se->se_callback_netid_len == 4 &&
+ !memcmp(se->se_callback_netid_val, "tcp6", 4)) {
+ if (!parse_ipv6(se->se_callback_addr_len,
+ se->se_callback_addr_val,
+ (struct sockaddr_in6 *) &cb->cb_addr))
+ goto out_err;
+ cb->cb_addrlen = sizeof(struct sockaddr_in6);
+ } else {
goto out_err;
+ }
- if ( !(parse_ipv4(se->se_callback_addr_len, se->se_callback_addr_val,
- (struct sockaddr_in *) &cb->cb_addr)))
- goto out_err;
- cb->cb_addrlen = sizeof(struct sockaddr_in);
cb->cb_minorversion = 0;
cb->cb_prog = se->se_callback_prog;
cb->cb_ident = se->se_callback_ident;
@@ -1209,6 +1250,7 @@ static bool
cl_addr_equal(struct sockaddr *a, struct sockaddr *b)
{
struct sockaddr_in *a4, *b4;
+ struct sockaddr_in6 *a6, *b6;
if (a->sa_family != b->sa_family)
return false;
@@ -1218,6 +1260,10 @@ cl_addr_equal(struct sockaddr *a, struct sockaddr *b)
a4 = (struct sockaddr_in *) a;
b4 = (struct sockaddr_in *) b;
return (a4->sin_addr.s_addr == b4->sin_addr.s_addr);
+ case AF_INET6:
+ a6 = (struct sockaddr_in6 *) a;
+ b6 = (struct sockaddr_in6 *) b;
+ return ipv6_addr_equal(&a6->sin6_addr, &b6->sin6_addr);
}
/* not sure how to compare, so just return false */
@@ -1229,6 +1275,7 @@ static void
cl_addr_copy(struct sockaddr *dst, struct sockaddr *src)
{
struct sockaddr_in *s4, *d4;
+ struct sockaddr_in6 *s6, *d6;
dst->sa_family = src->sa_family;
@@ -1238,6 +1285,11 @@ cl_addr_copy(struct sockaddr *dst, struct sockaddr *src)
d4 = (struct sockaddr_in *) dst;
d4->sin_addr.s_addr = s4->sin_addr.s_addr;
return;
+ case AF_INET6:
+ s6 = (struct sockaddr_in6 *) src;
+ d6 = (struct sockaddr_in6 *) dst;
+ ipv6_addr_copy(&d6->sin6_addr, &s6->sin6_addr);
+ return;
default:
dst->sa_family = AF_UNSPEC;
}
@@ -1252,6 +1304,10 @@ cl_addr_snprintf(char *buf, size_t size, struct sockaddr *sa)
snprintf(buf, size, "%pI4",
&((struct sockaddr_in *) sa)->sin_addr.s_addr);
break;
+ case AF_INET6:
+ snprintf(buf, size, "%pI6",
+ &((struct sockaddr_in6 *) sa)->sin6_addr.s6_addr);
+ break;
default:
snprintf(buf, size, "(family=%hu)", sa->sa_family);
}
@@ -1269,11 +1325,11 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
int status;
unsigned int strhashval;
char dname[HEXDIR_LEN];
- char addr_str[INET_ADDRSTRLEN];
+ char addr_str[INET6_ADDRSTRLEN];
nfs4_verifier verf = exid->verifier;
struct sockaddr *sa = svc_addr(rqstp);
- cl_addr_snprintf(addr_str, INET_ADDRSTRLEN, sa);
+ cl_addr_snprintf(addr_str, INET6_ADDRSTRLEN, sa);
dprintk("%s rqstp=%p exid=%p clname.len=%u clname.data=%p "
"ip_addr=%s flags %x, spa_how %d\n",
__func__, rqstp, exid, exid->clname.len, exid->clname.data,
@@ -1632,8 +1688,8 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
/* RFC 3530 14.2.33 CASE 0: */
status = nfserr_clid_inuse;
if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) {
- char addr_str[INET_ADDRSTRLEN];
- cl_addr_snprintf(addr_str, INET_ADDRSTRLEN,
+ char addr_str[INET6_ADDRSTRLEN];
+ cl_addr_snprintf(addr_str, INET6_ADDRSTRLEN,
(struct sockaddr *) &conf->cl_addr);
dprintk("NFSD: setclientid: string in use by client "
"at %s\n", addr_str);
--
1.6.0.6
--
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