[PATCH net] udp: consistently apply ufo or fragmentation

Dear Willem,

ip*_ufo_append_data() is called now for each skb_is_gso() packet.
Before the patch it was called for UDP packets only.

Could you please clarify, is it correct?

Thank you,
	Vasily Averin

ip*_ufo_append_data() is called now for each skb_is_gso() packet.
Before the patch it was called for UDP packets only.

Could you please clarify, is it correct?

__ip_append_data is called for udp, raw, icmp and ping sockets.
Of these, only udp packets have a path to get skb_is_gso() set:
when __ip_append_data has been called before on this packet
(using MSG_MORE) and the path entered ip_ufo_append_data
in that call through the other conditions in the branch, which
include sk->sk_type == SOCK_DGRAM.

This function is not reached from other segmentable protocols
like tcp, which call ip_queue_xmit in the ip layer. The exceptions
are sending in ip_send_unicast_reply, but those will not have gso.