mir/ovs
2
0
Fork 0
mirror of https://github.com/openvswitch/ovs synced 2025-08-30 22:05:19 +00:00
Code Issues Releases Wiki Activity

datapath: Disable LRO from userspace instead of the kernel.

Browse Source 
Whenever a port is added to the datapath, LRO is automatically disabled.
In the future, we may want to enable LRO in some circumstances, so have
userspace disable LRO through the ethtool ioctls.

As part of this change, the MTU and LRO checks are moved to
netdev-vport's send(), which is where they're actually needed.

Feature #6810

Signed-off-by: Justin Pettit <jpettit@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Justin Pettit
2011-08-26 23:34:40 -07:00
parent e47bd51a7b
commit 24b019f808
3 changed files with 39 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/dpif-linux.c
View File

@@ -60,6 +60,10 @@ enum { LRU_MAX_PORTS = 1024 };
enum { LRU_MASK = LRU_MAX_PORTS - 1};
BUILD_ASSERT_DECL(IS_POW2(LRU_MAX_PORTS));
/* This ethtool flag was introduced in Linux 2.6.24, so it might be
* missing if we have old headers. */
#define ETH_FLAG_LRO (1 << 15) /* LRO is enabled */
struct dpif_linux_dp {
/* Generic Netlink header. */
uint8_t cmd;
@@ -393,6 +397,10 @@ dpif_linux_port_add(struct dpif *dpif_, struct netdev *netdev,
request.options_len = options->size;
}
if (request.type == OVS_VPORT_TYPE_NETDEV) {
netdev_linux_ethtool_set_flag(netdev, ETH_FLAG_LRO, "LRO", false);
}
/* Loop until we find a port that isn't used. */
do {
request.port_no = dpif_linux_pop_port(dpif);