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ixgbe: fix xdp handle calculations

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Commit 7cbbf9f1fa ("ixgbe: fix xdp handle calculations") reintroduced
the addition of the umem headroom to the xdp handle in the ixgbe_zca_free,
ixgbe_alloc_buffer_slow_zc and ixgbe_alloc_buffer_zc functions. However,
the headroom is already added to the handle in the function
ixgbe_run_xdp_zc. This commit removes the latter addition and fixes the
case where the headroom is non-zero.

Fixes: 7cbbf9f1fa ("ixgbe: fix xdp handle calculations")
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Ciara Loftus 2019-09-13 10:39:47 +00:00 committed by Daniel Borkmann
parent 168dfc3a77
commit 2e78fc620f
1 changed files with 2 additions and 2 deletions
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drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
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@ -145,15 +145,15 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
{
struct xdp_umem *umem = rx_ring->xsk_umem;
int err, result = IXGBE_XDP_PASS;
u64 offset = umem->headroom;
struct bpf_prog *xdp_prog;
struct xdp_frame *xdpf;
u64 offset;
u32 act;
rcu_read_lock();
xdp_prog = READ_ONCE(rx_ring->xdp_prog);
act = bpf_prog_run_xdp(xdp_prog, xdp);
offset += xdp->data - xdp->data_hard_start;
offset = xdp->data - xdp->data_hard_start;
xdp->handle = xsk_umem_adjust_offset(umem, xdp->handle, offset);