imx28 problem with socket

silviagonzalez — Tue, 17 Feb 2015 14:06:48 GMT

Hi.

We have two imx28 with linux kernel 3.10. we make a network device driver (eth2) to send message by the spi bus. The problems begins when We receive a message.

The driver works fine. We know that the protocol number of the messagte is htons(ETH_P_IPV6), because te skb->protocol=0x86dd.

struct sk_buff *skb;

skb->protocol = eth_type_trans(skb, dev);

In one imx28 We create a socket to send message:

sock = socket(AF_INET6, SOCK_DGRAM, 0)) < 0)

memset(&client, 0, sizeof(client));

client.sin6_family = AF_INET6;

client.sin6_addr = in6addr_any;

client.sin6_port = htons(20000);

client.sin6_scope_id=if_nametoindex("eth2");

//From

memset(&from, 0, sizeof(from));

from.sin6_family = AF_INET6;

inet_pton(AF_INET6,"ff02::2",(void*)&from.sin6_addr.s6_addr);

from.sin6_port = htons(15118);

//bind

bind(sockEnvio,(struct sockaddr *)&client,sizeof(client));

//send

sendto(sockEnvio, data, localIPLen, 0, (struct sockaddr *) &from, sizeof(from)) ;

In the other imx28 We create a socket to receive the message

sock = socket(AF_INET6, SOCK_DGRAM, htons(ETH_P_IPV6))) < 0)

memset(&client, 0, sizeof(client));

client.sin6_family = AF_INET6;

client.sin6_addr = in6addr_any;

client.sin6_port = htons(20000);

client.sin6_scope_id=if_nametoindex("eth2");

//bind

bind(sockEnvio,(struct sockaddr *)&client,sizeof(client));

//send

recvfrom(sockEnvio,buffer, BUFFER_SIZE , 0 , (struct sockaddr *) &from , &from_size);

When We change the type of the socket to socket(AF_PACKET , SOCK_RAW , htons(ETH_P_IPV6))) < 0) We receive the message.

Are we missing anything? Could you help us, please?

Thanks in advance for your help.

Re: imx28 problem with socket

alejandrolozan1 — Thu, 26 Feb 2015 16:51:57 GMT

Hi,

Did you change the socket type in only one board?

Is it possible that you share your code so we can test it?

Best Regards,

Alejadro

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