ICMP

[JkDcubeai]

Socket does not have SOCK_RAW

Ping not working on SOCK_STREAM or SOCK_DGRAM

Basic networking does not work

[gvillegass]

any update?

[vladak]

Not sure what is meant by basic networking. When the WIZNET5K is initialized, it will establish a link, get IP address and then it is possible to "ping" it.

Now, the hardware supports IPRAW type of socket which paves the way to implementing ICMP outside of the hardware. For 5500 the documentation says:

W5500 IPRAW mode can handle IP layer's upper protocol in the TCP/IP Layer. W5500 IPRAW mode supports transport layer protocol such as ICMP(0x01),IGMP(0x02),TCP (0x06) and UDP(0x11) according to the protocol field of IP header, depending on the protocol number. The 'Ping' of ICMP is already implemented in W5500 as the Hardwired but when the user needs, the host can directly process the ICMP function include ping by opening the Socket n as an IPRAW mode.

The other Wiznet chips supported by this driver also have the IPRAW capability.

That said, the IPRAW guide says:

After initialization of W5500, the Ping Reply is processed automatically. However, be aware that the Hardwired Ping Reply Logic is disabled if ICMP is opened as SOCKET n in IPRAW mode,

This driver is open source, so using the IPRAW guide it should be possible to add the IPRAW support in.