fix: missed dev_in first packet event

Author: hengyoush

bpf/pktlatency.bpf.c

@@ -253,7 +253,7 @@ static __always_inline void  report_kern_evt(struct parse_kern_evt_body *param)
 		bpf_probe_read_kernel(&evt->flags, sizeof(uint8_t), &(((u8 *)tcp)[13]));
 		bpf_core_read(&evt->conn_id_s, sizeof(struct conn_id_s_t), conn_id_s);
 		bpf_perf_event_output(ctx, &rb, BPF_F_CURRENT_CPU, evt, sizeof(struct kern_evt));
-	} else if (conn_id_s == NULL && relative_seq == 1 && len_minus_hdr > 0 && (step == DEV_IN || step == TCP_IN) && is_protocol_not_unknown) {
+	} else if (conn_id_s == NULL && relative_seq == 1 && len_minus_hdr > 0 && (step == DEV_IN || step == TCP_IN)) {
 		// fist packet
 		struct first_packet_evt* evt = bpf_map_lookup_elem(&first_packet_evt_map, &zero);
 		if(!evt) {