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| author |   William Tu <u9012063@gmail.com> | 2016-06-10 11:49:33 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-06-10 17:58:03 -0700 |
| commit | f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1 (patch) | |
| tree | 7824d6446b4fd259cc7430641fd27475445361ba /net/openvswitch/flow_netlink.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-dev-f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1.tar.xz linux-dev-f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1.zip | |
openvswitch: Add packet truncation support.
The patch adds a new OVS action, OVS_ACTION_ATTR_TRUNC, in order to
truncate packets. A 'max_len' is added for setting up the maximum
packet size, and a 'cutlen' field is to record the number of bytes
to trim the packet when the packet is outputting to a port, or when
the packet is sent to userspace.
Signed-off-by: William Tu <u9012063@gmail.com>
Cc: Pravin Shelar <pshelar@nicira.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/flow_netlink.c')
| -rw-r--r-- | net/openvswitch/flow_netlink.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c index 0bb650f4f219..c78a6a1476fb 100644 --- a/net/openvswitch/flow_netlink.c +++ b/net/openvswitch/flow_netlink.c @@ -2229,6 +2229,7 @@ static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, [OVS_ACTION_ATTR_SAMPLE] = (u32)-1, [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash), [OVS_ACTION_ATTR_CT] = (u32)-1, + [OVS_ACTION_ATTR_TRUNC] = sizeof(struct ovs_action_trunc), }; const struct ovs_action_push_vlan *vlan; int type = nla_type(a); @@ -2255,6 +2256,14 @@ static int __ovs_nla_copy_actions(struct net *net, const struct nlattr *attr, return -EINVAL; break; + case OVS_ACTION_ATTR_TRUNC: { + const struct ovs_action_trunc *trunc = nla_data(a); + + if (trunc->max_len < ETH_HLEN) + return -EINVAL; + break; + } + case OVS_ACTION_ATTR_HASH: { const struct ovs_action_hash *act_hash = nla_data(a); |