From: Wei Xu <wexu@xxxxxxxxxx> Matthew found a roughly 40% tcp throughput regression with commit c67df11f(vhost_net: try batch dequing from skb array) as discussed in the following thread: https://www.mail-archive.com/netdev@xxxxxxxxxxxxxxx/msg187936.html v4: - fix zero iov iterator count in tap/tap_do_read()(Jason) - don't put tun in case of EBADFD(Jason) - Replace msg->msg_control with new 'skb' when calling tun/tap_do_read() v3: - move freeing skb from vhost to tun/tap recvmsg() to not confuse the callers. v2: - add Matthew as the reporter, thanks matthew. - moving zero headcount check ahead instead of defer consuming skb due to jason and mst's comment. - add freeing skb in favor of recvmsg() fails. Wei Xu (3): vhost: fix skb leak in handle_rx() tun: free skb in early errors tap: free skb if flags error drivers/net/tap.c | 14 ++++++++++---- drivers/net/tun.c | 24 ++++++++++++++++++------ drivers/vhost/net.c | 20 ++++++++++---------- 3 files changed, 38 insertions(+), 20 deletions(-) -- 1.8.3.1 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
