On 2/3/11 10:08 AM, David Somayajulu wrote:
Hi All,
While sending the Received Ethernet Frames (non - LRO case) to the FreeBSD
Network Stack via
(struct ifnet *)->if_input((struct ifnet *), (struct *mbuf));
Is it possible to send multiple Ethernet Frames in a single invocation of the
above callback function?
In other words should (struct *mbuf) above always correspond to a single
Ethernet Frame? I am not sure if I missed something, but I gathered from a
quick perusal of ether_input() in net/if_ethersubr.c, that only ONE Ethernet
Frame may be sent per callback.
yes only one.
the linkages you see in the mbuf definition are for when you are
putting it into some queue (interface, socket, reassembly, etc).
I had never considered passing a set of packets, but after my initial
scoffing thoughts I realized that it would actually be a very interesting
thought experiment to see if the ability to do that would be
advantageous in any way. I tmay be a way to reduce some sorts of
overhead if using interrupt mitigation.
Thanks
David S.
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