From: Ciara Loftus <ciara.loftus@intel.com>
To: netdev@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
bjorn.topel@intel.com, magnus.karlsson@intel.com,
jonathan.lemon@gmail.com
Cc: bruce.richardson@intel.com, bpf@vger.kernel.org,
intel-wired-lan@lists.osuosl.org, kevin.laatz@intel.com,
Ciara Loftus <ciara.loftus@intel.com>
Subject: [PATCH bpf-next 2/3] ixgbe: fix xdp handle calculations
Date: Wed, 11 Sep 2019 17:24:34 +0000 [thread overview]
Message-ID: <20190911172435.21042-2-ciara.loftus@intel.com> (raw)
In-Reply-To: <20190911172435.21042-1-ciara.loftus@intel.com>
Commit 7cbbf9f1fa23 ("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: 7cbbf9f1fa23 ("ixgbe: fix xdp handle calculations")
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
index ad802a8909e0..5ed8b5a257cf 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
@@ -145,7 +145,7 @@ 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;
+ u64 offset;
struct bpf_prog *xdp_prog;
struct xdp_frame *xdpf;
u32 act;
@@ -153,7 +153,7 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter,
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);
--
2.17.1
next prev parent reply other threads:[~2019-09-11 17:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 17:24 [PATCH bpf-next 1/3] i40e: fix xdp handle calculations Ciara Loftus
2019-09-11 17:24 ` Ciara Loftus [this message]
2019-09-12 16:28 ` [Intel-wired-lan] [PATCH bpf-next 2/3] ixgbe: " Bowers, AndrewX
2019-09-13 4:33 ` Björn Töpel
2019-09-11 17:24 ` [PATCH bpf-next 3/3] samples/bpf: fix xdpsock l2fwd tx for unaligned mode Ciara Loftus
2019-09-12 16:27 ` [Intel-wired-lan] [PATCH bpf-next 1/3] i40e: fix xdp handle calculations Bowers, AndrewX
2019-09-13 4:32 ` Björn Töpel
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