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Altera_Forum's avatar
Altera_Forum
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16 years ago

Altera TSE driver and example program for lwIP (1.3.2)

After many many requests and complaints about lack of support and/or documentation for support of lwIP for the Altera TSE, I have developed a drop-in TSE driver and example program and made this avai...
Altera_Forum's avatar
Altera_Forum
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14 years ago

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Hmm, lets see: 

# ifndef PBUF_POOL_BUFSIZE# define PBUF_POOL_BUFSIZE               LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN+ETH_PAD_SIZE)# endif
TCP_MSS = 1460

PBUF_LINK_HLEN = 14

ETH_PAD_SIZE = 2

To sum up: 1460+40+14+2 = 1516

Seems like no problems here?

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The defaults are correct. If TCP_MSS is changed I could see it being a problem. I wouldn't think NIOS II systems are so memory constrained to not allow a large MSS.

Although we were mulling here over making an lwIP-based program entirely in onchip memory. So I could see that being a case.

Bill