diff options
| author |   Björn Töpel <bjorn.topel@intel.com> | 2018-09-07 10:18:48 +0200 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-09-25 13:16:19 -0700 |
| commit | 3ab52af58fa481324bb7c839a2187c54c4af912b (patch) | |
| tree | 23c7f5927c27ba3bbaabc241bf9b2ddd4d546a17 /drivers/net/ethernet/intel/i40e/i40e_txrx_common.h | |
| parent | i40e: clean zero-copy XDP Rx ring on shutdown/reset (diff) | |
| download | wireguard-linux-3ab52af58fa481324bb7c839a2187c54c4af912b.tar.xz wireguard-linux-3ab52af58fa481324bb7c839a2187c54c4af912b.zip | |
i40e: disallow changing the number of descriptors when AF_XDP is on
When an AF_XDP UMEM is attached to any of the Rx rings, we disallow a
user to change the number of descriptors via e.g. "ethtool -G IFNAME".
Otherwise, the size of the stash/reuse queue can grow unbounded, which
would result in OOM or leaking userspace buffers.
Signed-off-by: Björn Töpel <bjorn.topel@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/i40e/i40e_txrx_common.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx_common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx_common.h b/drivers/net/ethernet/intel/i40e/i40e_txrx_common.h index 8d46acff6f2e..09809dffe399 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx_common.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx_common.h @@ -89,5 +89,6 @@ static inline void i40e_arm_wb(struct i40e_ring *tx_ring, void i40e_xsk_clean_rx_ring(struct i40e_ring *rx_ring); void i40e_xsk_clean_tx_ring(struct i40e_ring *tx_ring); +bool i40e_xsk_any_rx_ring_enabled(struct i40e_vsi *vsi); #endif /* I40E_TXRX_COMMON_ */ |