diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-01-28 12:48:30 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-01-31 23:43:35 +0100 |
commit | 608d1a19fd6bf3928f2f002dfb66bae7272f4646 (patch) | |
tree | ea458d4d579242aefc5aaf4901657a5fa7d5ec3b /src/evaluate.c | |
parent | 8ce99446dde0aba7ca46637f32ccfc9632a0ef22 (diff) |
evaluate: check if we have to resolve a conflict in first place
So we enter resolve_protocol_conflict() only when we really have a
conflict that we want to try to resolve.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/evaluate.c')
-rw-r--r-- | src/evaluate.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/src/evaluate.c b/src/evaluate.c index 93f408d2..a294070a 100644 --- a/src/evaluate.c +++ b/src/evaluate.c @@ -387,23 +387,19 @@ static int supersede_dep(struct eval_ctx *ctx, const struct proto_desc *have, return 0; } -static int resolve_protocol_conflict(struct eval_ctx *ctx, struct expr *payload) +static int resolve_protocol_conflict(struct eval_ctx *ctx, + const struct proto_desc *desc, + struct expr *payload) { - const struct hook_proto_desc *h = &hook_proto_desc[ctx->pctx.family]; enum proto_bases base = payload->payload.base; - const struct proto_desc *desc; struct stmt *nstmt = NULL; int link, err; - desc = ctx->pctx.protocol[base].desc; if (desc == payload->payload.desc) { payload->payload.offset += ctx->pctx.protocol[base].offset; return 0; } - if (payload->payload.base != h->base) - return 1; - err = supersede_dep(ctx, desc, payload); if (err <= 0) return err; @@ -442,17 +438,24 @@ static int __expr_evaluate_payload(struct eval_ctx *ctx, struct expr *expr) { struct expr *payload = expr; enum proto_bases base = payload->payload.base; + const struct proto_desc *desc; struct stmt *nstmt; int err; - if (ctx->pctx.protocol[base].desc == NULL) { + desc = ctx->pctx.protocol[base].desc; + if (desc == NULL) { if (payload_gen_dependency(ctx, payload, &nstmt) < 0) return -1; list_add_tail(&nstmt->list, &ctx->stmt->list); } else { - err = resolve_protocol_conflict(ctx, payload); - if (err <= 0) - return err; + /* If we already have context and this payload is on the same + * base, try to resolve the protocol conflict. + */ + if (payload->payload.base == desc->base) { + err = resolve_protocol_conflict(ctx, desc, payload); + if (err <= 0) + return err; + } return expr_error(ctx->msgs, payload, "conflicting protocols specified: %s vs. %s", ctx->pctx.protocol[base].desc->name, |