Migrating a TCP socket and copying the contents of sk_buff for queues

[Guest ha-as]

Hello,

 

I am trying to migrate a TCP socket in listening mode from one server to another, to achieve this prupose I am copying multiple parameters related to the tcp_sock, and later I copy the contents of the sk_buff for out-of-order queue, write queue and read queue.

 

My question is it enough just to copy the following fields of the sk_buff, or not:

 

Code:

skb->data

skb->cb

skb->len

skb->data_len

skb->mac_len

skb->hdr_len

skb->csum

skb->priority

skb->ip_summed

skb->pkt_type

skb->rxhash

skb->truesize

Or do I need to to copy more extra fields?

 

For the current implmenetation, copying only these fields work perfectly. But when I try close the socket, the whole machine hangs, so I suppose. there might be something wrong in the data structure I created in the importing side, and I still need more fields to fill.

 

The current Linux Kernel Version I am developing on is 3.8.29

 

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