diff options
| author | Carlos Falgueras García <carlosfg@riseup.net> | 2016-08-17 16:07:09 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-08-17 16:08:06 +0200 |
| commit | e35693fd13de771e1e047ffa4f799f72f1446e8d (patch) | |
| tree | 4727255558de280341f39a3514c996ab92654cc4 /src/expr/payload.c | |
| parent | 48a71a20420e307d0a1d8a89ac9fc7b46ec5a1ca (diff) | |
src: Implement rule comparison
This patch implements the function:
bool nftnl_rule_cmp(const struct nftnl_rule *r1,
const struct nftnl_rule *r2)
for rule comparison.
Expressions within rules need to be compared, so also has been created the
function:
bool nftnl_expr_cmp(const struct nftnl_expr *e1,
const struct nftnl_expr *e2);
Also includes all expression comparators.
Signed-off-by: Carlos Falgueras García <carlosfg@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/expr/payload.c')
| -rw-r--r-- | src/expr/payload.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/expr/payload.c b/src/expr/payload.c index d4f9ef9..c9ab5d4 100644 --- a/src/expr/payload.c +++ b/src/expr/payload.c @@ -335,10 +335,36 @@ nftnl_expr_payload_snprintf(char *buf, size_t len, uint32_t type, return -1; } +static bool nftnl_expr_payload_cmp(const struct nftnl_expr *e1, + const struct nftnl_expr *e2) +{ + struct nftnl_expr_payload *p1 = nftnl_expr_data(e1); + struct nftnl_expr_payload *p2 = nftnl_expr_data(e2); + bool eq = true; + + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_SREG)) + eq &= (p1->sreg == p2->sreg); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_DREG)) + eq &= (p1->dreg == p2->dreg); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_BASE)) + eq &= (p1->base == p2->base); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_OFFSET)) + eq &= (p1->offset == p2->offset); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_LEN)) + eq &= (p1->len == p2->len); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_CSUM_TYPE)) + eq &= (p1->csum_type == p2->csum_type); + if (e1->flags & (1 << NFTNL_EXPR_PAYLOAD_CSUM_OFFSET)) + eq &= (p1->csum_offset == p2->csum_offset); + + return eq; +} + struct expr_ops expr_ops_payload = { .name = "payload", .alloc_len = sizeof(struct nftnl_expr_payload), .max_attr = NFTA_PAYLOAD_MAX, + .cmp = nftnl_expr_payload_cmp, .set = nftnl_expr_payload_set, .get = nftnl_expr_payload_get, .parse = nftnl_expr_payload_parse, |