diff options
| author | Kevin Laatz <kevin.laatz@intel.com> | 2019-09-05 01:11:44 +0000 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-09-05 13:53:02 +0200 |
| commit | 4c5d9a7fa149a8725defa0bda6eeb5f36998ae64 (patch) | |
| tree | f5a066140891afc266a46962c533f28a8fc1758b /drivers | |
| parent | 110509df4540c7ad9323e53acc37c458a586e9c6 (diff) | |
| download | linux-4c5d9a7fa149a8725defa0bda6eeb5f36998ae64.tar.bz2 | |
i40e: fix xdp handle calculations
Currently, we don't add headroom to the handle in i40e_zca_free,
i40e_alloc_buffer_slow_zc and i40e_alloc_buffer_zc. The addition of the
headroom to the handle was removed in
commit 2f86c806a8a8 ("i40e: modify driver for handling offsets"), which
will break things when headroom is non-zero. This patch fixes this and uses
xsk_umem_adjust_offset to add it appropritely based on the mode being run.
Fixes: 2f86c806a8a8 ("i40e: modify driver for handling offsets")
Reported-by: Bjorn Topel <bjorn.topel@intel.com>
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_xsk.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c index eaca6162a6e6..0373bc6c7e61 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c @@ -267,7 +267,7 @@ static bool i40e_alloc_buffer_zc(struct i40e_ring *rx_ring, bi->addr = xdp_umem_get_data(umem, handle); bi->addr += hr; - bi->handle = handle; + bi->handle = xsk_umem_adjust_offset(umem, handle, umem->headroom); xsk_umem_discard_addr(umem); return true; @@ -304,7 +304,7 @@ static bool i40e_alloc_buffer_slow_zc(struct i40e_ring *rx_ring, bi->addr = xdp_umem_get_data(umem, handle); bi->addr += hr; - bi->handle = handle; + bi->handle = xsk_umem_adjust_offset(umem, handle, umem->headroom); xsk_umem_discard_addr_rq(umem); return true; @@ -469,7 +469,8 @@ void i40e_zca_free(struct zero_copy_allocator *alloc, unsigned long handle) bi->addr = xdp_umem_get_data(rx_ring->xsk_umem, handle); bi->addr += hr; - bi->handle = (u64)handle; + bi->handle = xsk_umem_adjust_offset(rx_ring->xsk_umem, (u64)handle, + rx_ring->xsk_umem->headroom); } /** |