Payload matching attempt via goto.

xdp-payload-match.c

        // Payload match.
        if (filter[i]->payloadLen > 0)
        {
            // Initialize packet data.
            for (uint16_t j = 0; j < MAX_PCKT_LENGTH; j++)
            {
                if ((j + 1) > filter[i]->payloadLen)
                {
                    break;
                }

                uint8_t *byte = data + sizeof(struct ethhdr) + (iph->ihl * 4) + l4headerLen + j;

                if (byte + 1 > (uint8_t *)data_end)
                {
                    break;
                }
                
                if (*(byte) == filter[i]->payloadMatch[j])
                {
                    continue;
                }

                goto test;
            }

            continue;
        }

        test: