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 | 31 +++++++++++++++++++++++++------
1 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index d294b1d..578e48c 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -56,6 +56,7 @@
#include <linux/module.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/clnt.h>
+#include <net/ipv6.h>
#define NFSDDBG_FACILITY NFSDDBG_PROC
@@ -901,9 +902,16 @@ 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))
+ unsigned short expected_family;
+
+ /* 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))
+ expected_family = AF_INET;
+ else if (se->se_callback_netid_len == 4 &&
+ !memcmp(se->se_callback_netid_val, "tcp6", 4))
+ expected_family = AF_INET6;
+ else
goto out_err;
cb->cb_addrlen = rpc_uaddr2sockaddr(se->se_callback_addr_val,
@@ -911,7 +919,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se)
(struct sockaddr *) &cb->cb_addr,
sizeof(cb->cb_addr));
- if (cb->cb_addr.ss_family != AF_INET)
+ if (cb->cb_addr.ss_family != expected_family)
goto out_err;
cb->cb_minorversion = 0;
cb->cb_prog = se->se_callback_prog;
@@ -1153,6 +1161,7 @@ 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;
@@ -1162,6 +1171,10 @@ 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 */
@@ -1173,6 +1186,7 @@ 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;
@@ -1182,6 +1196,11 @@ 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;
}
@@ -1196,7 +1215,7 @@ 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);
@@ -1574,7 +1593,7 @@ 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];
+ char addr_str[INET6_ADDRSTRLEN];
rpc_ntop((struct sockaddr *) &conf->cl_addr, addr_str,
sizeof(addr_str));
dprintk("NFSD: setclientid: string in use by client "
--
1.6.0.6
--
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