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| author | David S. Miller <davem@davemloft.net> | 2009-03-26 22:45:23 -0700 |
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| committer | David S. Miller <davem@davemloft.net> | 2009-03-26 22:45:23 -0700 |
| commit | 01e6de64d9c8d0e75dca3bb4cf898db73abe00d4 (patch) | |
| tree | 925982e6241e5ac47f268bc2c2942ab0f06775cd /lib/nlattr.c | |
| parent | 8f1ead2d1a626ed0c85b3d2c2046a49081d5933f (diff) | |
| parent | d271e8bd8c60ce059ee36d836ba063cfc61c3e21 (diff) | |
| download | kernel-common-01e6de64d9c8d0e75dca3bb4cf898db73abe00d4.tar.gz kernel-common-01e6de64d9c8d0e75dca3bb4cf898db73abe00d4.tar.bz2 kernel-common-01e6de64d9c8d0e75dca3bb4cf898db73abe00d4.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
Diffstat (limited to 'lib/nlattr.c')
| -rw-r--r-- | lib/nlattr.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/nlattr.c b/lib/nlattr.c index 80009a24e21d..c4706eb98d3d 100644 --- a/lib/nlattr.c +++ b/lib/nlattr.c @@ -133,6 +133,32 @@ errout: } /** + * nla_policy_len - Determin the max. length of a policy + * @policy: policy to use + * @n: number of policies + * + * Determines the max. length of the policy. It is currently used + * to allocated Netlink buffers roughly the size of the actual + * message. + * + * Returns 0 on success or a negative error code. + */ +int +nla_policy_len(const struct nla_policy *p, int n) +{ + int i, len = 0; + + for (i = 0; i < n; i++) { + if (p->len) + len += nla_total_size(p->len); + else if (nla_attr_minlen[p->type]) + len += nla_total_size(nla_attr_minlen[p->type]); + } + + return len; +} + +/** * nla_parse - Parse a stream of attributes into a tb buffer * @tb: destination array with maxtype+1 elements * @maxtype: maximum attribute type to be expected @@ -467,6 +493,7 @@ EXPORT_SYMBOL(nla_append); #endif EXPORT_SYMBOL(nla_validate); +EXPORT_SYMBOL(nla_policy_len); EXPORT_SYMBOL(nla_parse); EXPORT_SYMBOL(nla_find); EXPORT_SYMBOL(nla_strlcpy); |