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authorKevin Laatz <kevin.laatz@intel.com>2019-09-05 01:11:44 +0000
committerDaniel Borkmann <daniel@iogearbox.net>2019-09-05 13:53:02 +0200
commit4c5d9a7fa149a8725defa0bda6eeb5f36998ae64 (patch)
treef5a066140891afc266a46962c533f28a8fc1758b
parent110509df4540c7ad9323e53acc37c458a586e9c6 (diff)
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>
-rw-r--r--drivers/net/ethernet/intel/i40e/i40e_xsk.c7
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);
}
/**