We don't set transport header for untrusted packets in the past, but for the
follwoing reasons, we need to do it now.
- Better packet length estimation (introduced in 1def9238) needs l4 header for
gso packets to compute the header length.
- Some driver needs l4 header (e.g. ixgbe needs tcp header to do atr).
So this patches tries to set transport header for packets from untrusted source
(netback, packet, tuntap, macvtap). Plus a fix for better estimation on packet
length for DODGY packet.
Tested on tun/macvtap/packet, compile test on netback.
Jason Wang (5):
macvtap: set transport header before passing skb to lower device
tuntap: set transport header before passing it to kernel
packet: set transport header before doing xmit
netback: set transport header before passing it to kernel
net_sched: better precise estimation on packet length for untrusted
packets
drivers/net/macvtap.c | 9 +++++++++
drivers/net/tun.c | 10 ++++++++++
drivers/net/xen-netback/netback.c | 12 ++++++++++++
net/core/dev.c | 8 +++++++-
net/packet/af_packet.c | 21 +++++++++++++++++++++
5 files changed, 59 insertions(+), 1 deletions(-)
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