Re: [PATCH net-next] virtio-net: avoid unnecessary sg initialzation

2015-08-27 Thread David Miller
From: Jason Wang Date: Thu, 27 Aug 2015 14:53:06 +0800 > Usually an skb does not have up to MAX_SKB_FRAGS frags. So no need to > initialize the unuse part of sg. This patch initialize the sg based on > the real number it will used: > > - during xmit, it could be inferred from nr_frags and can_pu

[PATCH net-next] virtio-net: avoid unnecessary sg initialzation

2015-08-26 Thread Jason Wang
Usually an skb does not have up to MAX_SKB_FRAGS frags. So no need to initialize the unuse part of sg. This patch initialize the sg based on the real number it will used: - during xmit, it could be inferred from nr_frags and can_push. - for small receive buffer, it will also be 2. Cc: Michael S.