diff options
| author |   Maciej Fijalkowski <maciej.fijalkowski@intel.com> | 2019-10-24 01:11:25 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-11-04 13:10:08 -0800 |
| commit | 23b44513c3e6f999fb9ddc2874979317d8329e96 (patch) | |
| tree | 822ab3f0ca0f92d1cb7f035d58e0f9ef3a8badb5 /drivers/net/ethernet/intel/ice | |
| parent | ice: add build_skb() support (diff) | |
| download | linux-dev-23b44513c3e6f999fb9ddc2874979317d8329e96.tar.xz linux-dev-23b44513c3e6f999fb9ddc2874979317d8329e96.zip | |
ice: allow 3k MTU for XDP
At this point ice driver is able to work on order 1 pages that are split
onto two 3k buffers. Let's reflect that when user is setting new MTU
size and XDP is present on interface.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_main.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index 29eea08807fd..363b284e8aa1 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -4659,6 +4659,18 @@ clear_recovery: } /** + * ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP + * @vsi: Pointer to VSI structure + */ +static int ice_max_xdp_frame_size(struct ice_vsi *vsi) +{ + if (PAGE_SIZE >= 8192 || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags)) + return ICE_RXBUF_2048 - XDP_PACKET_HEADROOM; + else + return ICE_RXBUF_3072; +} + +/** * ice_change_mtu - NDO callback to change the MTU * @netdev: network interface device structure * @new_mtu: new value for maximum frame size @@ -4678,11 +4690,11 @@ static int ice_change_mtu(struct net_device *netdev, int new_mtu) } if (ice_is_xdp_ena_vsi(vsi)) { - int frame_size = ICE_RXBUF_2048 - XDP_PACKET_HEADROOM; + int frame_size = ice_max_xdp_frame_size(vsi); if (new_mtu + ICE_ETH_PKT_HDR_PAD > frame_size) { netdev_err(netdev, "max MTU for XDP usage is %d\n", - frame_size); + frame_size - ICE_ETH_PKT_HDR_PAD); return -EINVAL; } } |