diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2011-02-17 18:33:22 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2011-02-17 18:33:22 +0100 |
commit | 9f53603a10aa738d6f5a41a061bc3e1182c42d0c (patch) | |
tree | 0940d6bb8d5d203052496c484b92b883be72ee17 /src | |
parent | 3e6806e7690d0ed79d9aed82dc44d1eaa676d3e8 (diff) |
conntrack: add NFCT_CP_OVERRIDE flag for nfct_copy()
Thus, we have a fast version of nfct_copy() which allows to
copy the destination to the origin. After this call, the
destination is a clone of the origin.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src')
-rw-r--r-- | src/conntrack/api.c | 7 | ||||
-rw-r--r-- | src/conntrack/copy.c | 8 |
2 files changed, 15 insertions, 0 deletions
diff --git a/src/conntrack/api.c b/src/conntrack/api.c index 2262974..a35c670 100644 --- a/src/conntrack/api.c +++ b/src/conntrack/api.c @@ -1099,6 +1099,9 @@ int nfct_cmp(const struct nf_conntrack *ct1, * and 4 protocol number. * - NFCT_CP_META: that copies the metainformation * (all the attributes >= ATTR_TCP_STATE) + * - NFCT_CP_OVERRIDE: changes the default behaviour of nfct_copy() since + * it overrides the destination object. After the copy, the destination + * is a clone of the origin. This flag provides faster copying. */ void nfct_copy(struct nf_conntrack *ct1, const struct nf_conntrack *ct2, @@ -1109,6 +1112,10 @@ void nfct_copy(struct nf_conntrack *ct1, assert(ct1 != NULL); assert(ct2 != NULL); + if (flags & NFCT_CP_OVERRIDE) { + __copy_fast(ct1, ct2); + return; + } if (flags == NFCT_CP_ALL) { for (i=0; i<ATTR_MAX; i++) { if (test_bit(i, ct2->set)) { diff --git a/src/conntrack/copy.c b/src/conntrack/copy.c index 94d0711..c3a4fcc 100644 --- a/src/conntrack/copy.c +++ b/src/conntrack/copy.c @@ -505,3 +505,11 @@ const copy_attr copy_attr_array[ATTR_MAX] = { [ATTR_TIMESTAMP_START] = copy_attr_timestamp_start, [ATTR_TIMESTAMP_STOP] = copy_attr_timestamp_stop, }; + +/* this is used by nfct_copy() with the NFCT_CP_OVERRIDE flag set. */ +void __copy_fast(struct nf_conntrack *ct1, const struct nf_conntrack *ct2) +{ + memcpy(ct1, ct2, sizeof(*ct1)); + /* special case: secctx attribute is allocated dinamically. */ + copy_attr_secctx(ct1, ct2); +} |