Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5858ae44e289ac6c809af3fe81b9a6ed41914d41
Commit: 5858ae44e289ac6c809af3fe81b9a6ed41914d41
Parent: cbac3cba66ab51492da53e7bf4f38da872408065
Author: Steve French <[EMAIL PROTECTED]>
AuthorDate: Wed Apr 25 11:59:10 2007 +0000
Committer: Steve French <[EMAIL PROTECTED]>
CommitDate: Wed Apr 25 11:59:10 2007 +0000
[CIFS] Add IPv6 support
IPv6 support was started a few years ago in the cifs client, but lacked a
kernel helper function for parsing the ascii form of the ipv6 address. Now
that that is added (and now IPv6 is the default that some OS use now) it
was fairly easy to finish the cifs ipv6 support. This requires that
CIFS_EXPERIMENTAL be enabled and (at least until the mount.cifs module is
modified to use a new ipv6 friendly call instead of gethostbyname) and the
ipv6 address be passed on the mount as "ip=" mount option.
Thanks
Signed-off-by: Steve French <[EMAIL PROTECTED]>
---
fs/cifs/CHANGES | 8 +++++++-
fs/cifs/connect.c | 15 +++++++++++----
fs/cifs/netmisc.c | 24 ++++++++++++++++++++++--
3 files changed, 40 insertions(+), 7 deletions(-)
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 713fec6..301631c 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,4 +1,10 @@
-Verison 1.48
+Version 1.49
+------------
+IPv6 support. Enable ipv6 addresses to be passed on mount (put the ipv6
+address after the "ip=" mount option, at least until mount.cifs is fixed to
+handle DNS host to ipv6 name translation).
+
+Version 1.48
------------
Fix mtime bouncing around from local idea of last write times to remote time.
Fix hang (in i_size_read) when simultaneous size update of same remote file
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 9e41f8e..c139fbd 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1790,11 +1790,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info
*cifs_sb,
existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
NULL /* no ipv6 addr */,
volume_info.username, &srvTcp);
- else if(address_type == AF_INET6)
+ else if(address_type == AF_INET6) {
+ cFYI(1,("looking for ipv6 address"));
existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
&sin_server6.sin6_addr,
volume_info.username, &srvTcp);
- else {
+ } else {
kfree(volume_info.UNC);
kfree(volume_info.password);
kfree(volume_info.prepath);
@@ -1810,12 +1811,18 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info
*cifs_sb,
sin_server.sin_port = htons(volume_info.port);
else
sin_server.sin_port = 0;
- rc = ipv4_connect(&sin_server,&csocket,
+ if (address_type == AF_INET6) {
+ cFYI(1,("attempting ipv6 connect"));
+ /* BB should we allow ipv6 on port 139? */
+ /* other OS never observed in Wild doing 139 with v6 */
+ rc = ipv6_connect(&sin_server6,&csocket);
+ } else
+ rc = ipv4_connect(&sin_server,&csocket,
volume_info.source_rfc1001_name,
volume_info.target_rfc1001_name);
if (rc < 0) {
cERROR(1,
- ("Error connecting to IPv4 socket. Aborting
operation"));
+ ("Error connecting to IPv4 socket. Aborting
operation"));
if(csocket != NULL)
sock_release(csocket);
kfree(volume_info.UNC);
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index 992e80e..53e304d 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -30,6 +30,9 @@
#include <linux/fs.h>
#include <asm/div64.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+#include <linux/inet.h>
+#endif
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
@@ -129,11 +132,27 @@ static const struct smb_to_posix_error
mapping_table_ERRHRD[] = {
/* Convert string containing dotted ip address to binary form */
/* returns 0 if invalid address */
-/* BB add address family, change rc to status flag and return union or for
ipv6 */
-/* will need parent to call something like inet_pton to convert ipv6 address
BB */
int
cifs_inet_pton(int address_family, char *cp,void *dst)
{
+#ifdef CONFIG_CIFS_EXPERIMENTAL
+ int ret = 0;
+
+ /* calculate length by finding first slash or NULL */
+ /* BB Should we convert '/' slash to '\' here since it seems already
done
+ before this */
+ if( address_family == AF_INET ){
+ ret = in4_pton(cp, -1 /* len */, dst , '\\', NULL);
+ } else if( address_family == AF_INET6 ){
+ ret = in6_pton(cp, -1 /* len */, dst , '\\', NULL);
+ }
+#ifdef CONFIG_CIFS_DEBUG2
+ cFYI(1,("address conversion returned %d for %s", ret, cp));
+#endif
+ if (ret > 0)
+ ret = 1;
+ return ret;
+#else
int value;
int digit;
int i;
@@ -192,6 +211,7 @@ cifs_inet_pton(int address_family, char *cp,void *dst)
*((__be32 *)dst) = *((__be32 *) bytes) | htonl(value);
return 1; /* success */
+#endif /* EXPERIMENTAL */
}
/*****************************************************************************
-
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