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lwip: optimize the dhcp client

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1. modify the discover retry backoff time from (2,4,8,16,32,60,60)s to (500m,1,2,4,8,15,15)s.
2. add DHCP_DOES_ARP_CHECK to menuconfig for users to specify if do a ARP check on the offered address.
   If enable, one more second will be taken in obtaining IP address.
3. update wifi libs
This commit is contained in:
qiyueixa
2017-01-23 13:44:34 +08:00
parent 6bc9cd39e9
commit 03e3b137bf
4 changed files with 19 additions and 2 deletions
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components/lwip/include/lwip/port/lwipopts.h
+5
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@@ -206,6 +206,11 @@
#define DHCP_MAXRTX 0
/**
* DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address.
*/
#define DHCP_DOES_ARP_CHECK CONFIG_LWIP_DHCP_DOES_ARP_CHECK
/*
------------------------------------
---------- AUTOIP options ----------