diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2008-12-04 14:20:08 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-01-06 11:53:49 -0500 |
| commit | bc995801a09d1fead0bec1356bfd836911c8eed7 (patch) | |
| tree | b7a2faad59bfa92db4057c23fcf7d31b70d20611 /include/linux/lockd | |
| parent | 6999fb4016b2604c2f8a65586bba4a62a4b24ce7 (diff) | |
NLM: Support IPv6 scope IDs in nlm_display_address()
Scope ID support is needed since the kernel's NSM implementation is
about to use these displayed addresses as a mon_name in some cases.
When nsm_use_hostnames is zero, without scope ID support NSM will fail
to handle peers that contact us via a link-local address. Link-local
addresses do not work without an interface ID, which is stored in the
sockaddr's sin6_scope_id field.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'include/linux/lockd')
| -rw-r--r-- | include/linux/lockd/lockd.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h index dae22cb4c38d..80a0a2cff2b8 100644 --- a/include/linux/lockd/lockd.h +++ b/include/linux/lockd/lockd.h @@ -68,6 +68,14 @@ struct nlm_host { char *h_addrbuf; /* address eyecatcher */ }; +/* + * The largest string sm_addrbuf should hold is a full-size IPv6 address + * (no "::" anywhere) with a scope ID. The buffer size is computed to + * hold eight groups of colon-separated four-hex-digit numbers, a + * percent sign, a scope id (at most 32 bits, in decimal), and NUL. + */ +#define NSM_ADDRBUF ((8 * 4 + 7) + (1 + 10) + 1) + struct nsm_handle { struct list_head sm_link; atomic_t sm_count; @@ -76,7 +84,7 @@ struct nsm_handle { size_t sm_addrlen; unsigned int sm_monitored : 1, sm_sticky : 1; /* don't unmonitor */ - char sm_addrbuf[48]; /* address eyecatcher */ + char sm_addrbuf[NSM_ADDRBUF]; }; /* |