I am using the e1000e driver for several Intel network cards (Intel EXPI9402PT, based on 82571EB chip). The problem is that when I try to use the maximum speed (1 GB) on several interfaces, the speed on each interface starts to decrease.
I have my own driver in kernel space, designed only to send packet data. It simply distributes packages by:
skb = dev_alloc_skb(packet->len);
and they send them by:
result = dev->hard_start_xmit(skb,dev);
Each interface has its own driver instance.
For one interface, I get: 120435948 bytes / s.
For two interfaces I get: 61080233 bytes / sec and 60515294 bytes / sec.
For three interfaces I get: 28564020 bytes / sec, 27111184 bytes / sec, 27118907 bytes / sec.
? hard_start_xmit ?
anon