Switch to LWIP_CHKSUM_ALGORITHM #3 (#42)

Algorithm 3 takes about 40% less time per packet on xtensa lx106, so switch from checksum algorithm #2(lwip default) to #3. 160MHz CPU, 1450B 46us - Algorithm 1 33us - Algorithm 2 19us - Algorithm 3 80 MHz CPU, 1450B 92us - Algorithm 1 64us - Algorithm 2 37us - Algorithm 3
d-a-v · Jan 9, 2020 · 942df71 · 942df71
1 parent fd2a2d5
commit 942df71
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/glue-lwip/arduino/lwipopts.h b/glue-lwip/arduino/lwipopts.h
@@ -2273,6 +2273,12 @@
  * @ingroup lwip_opts_infrastructure
  * @{
  */
+/**
+ * LWIP_CHKSUM_ALGORITHM==3: Checksum algorithm fastest for ESP8266
+ */
+#if !defined LWIP_CHKSUM_ALGORITHM || defined __DOXYGEN__
+#define LWIP_CHKSUM_ALGORITHM           3 // 2
+#endif
 /**
  * LWIP_CHECKSUM_CTRL_PER_NETIF==1: Checksum generation/check can be enabled/disabled
  * per netif.