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Re: [lwip-users] IP_HDRINCL in ip_output_if()
From: |
Jani Monoses |
Subject: |
Re: [lwip-users] IP_HDRINCL in ip_output_if() |
Date: |
Fri, 3 Oct 2003 09:35:48 +0300 |
Unlike the comment suggests it's not used at TCP retransmits but in ICMP
replies when the header of the ICMP request is reused and changes only a
little.
> Hello,
>
> does someone remember when and why IP_HDRINCL is implemented in
> netif.c/ip_output_if()?
>
> -----
> ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr
> *dest,
> u8_t ttl, u8_t tos,
> u8_t proto, struct netif *netif)
> {
> static struct ip_hdr *iphdr;
> static u16_t ip_id = 0;
>
> snmp_inc_ipoutrequests();
>
> if (dest != IP_HDRINCL) {
> -----
>
> Regards, Leon.
>
>
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