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Date:   Wed, 17 Apr 2019 12:52:55 -0700
From:   Jonathan Lemon <jonathan.lemon@...il.com>
To:     <netdev@...r.kernel.org>
CC:     <maximmi@...lanox.com>, <bjorn.topel@...el.com>,
        <kernel-team@...com>
Subject: [PATCH net-next] xsk: Have xsk_umem_peek_addr_rq() return chunk-aligned handles.

xkq_peek_addr() returns chunk-aligned handles, so have the rq behave
the same way.  Clean up callsites.

Signed-off-by: Jonathan Lemon <jonathan.lemon@...il.com>
Cc: Björn Töpel <bjorn.topel@...el.com>
Cc: Maxim Mikityanskiy <maximmi@...lanox.com>
Cc: netdev@...r.kernel.org
---
 drivers/net/ethernet/intel/i40e/i40e_xsk.c          | 2 --
 drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c        | 2 --
 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c | 2 +-
 include/net/xdp_sock.h                              | 2 +-
 4 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
index d28b629afc8a..d2e212d007c3 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c
@@ -285,8 +285,6 @@ static bool i40e_alloc_buffer_slow_zc(struct i40e_ring *rx_ring,
 		return false;
 	}
 
-	handle &= rx_ring->xsk_umem->chunk_mask;
-
 	hr = umem->headroom + XDP_PACKET_HEADROOM;
 
 	bi->dma = xdp_umem_get_dma(umem, handle);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
index 582d83d35f7e..fc5ca35b4dbf 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c
@@ -343,8 +343,6 @@ static bool ixgbe_alloc_buffer_slow_zc(struct ixgbe_ring *rx_ring,
 		return false;
 	}
 
-	handle &= rx_ring->xsk_umem->chunk_mask;
-
 	hr = umem->headroom + XDP_PACKET_HEADROOM;
 
 	bi->dma = xdp_umem_get_dma(umem, handle);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c
index 61d75a7b3ce2..2f0b5fd1ee97 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c
@@ -309,7 +309,7 @@ int mlx5e_xsk_page_alloc_umem(struct mlx5e_rq *rq,
 
 static inline void mlx5e_xsk_recycle_frame(struct mlx5e_rq *rq, u64 handle)
 {
-	xsk_umem_fq_reuse(rq->umem, handle & rq->umem->chunk_mask);
+	xsk_umem_fq_reuse(rq->umem, handle);
 }
 
 /* XSKRQ uses pages from UMEM, they must not be released. They are returned to
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h
index 7ebcb62fedf1..9d97ae73a287 100644
--- a/include/net/xdp_sock.h
+++ b/include/net/xdp_sock.h
@@ -118,7 +118,7 @@ static inline u64 *xsk_umem_peek_addr_rq(struct xdp_umem *umem, u64 *addr)
 	if (!rq->length)
 		return xsk_umem_peek_addr(umem, addr);
 
-	*addr = rq->handles[rq->length - 1];
+	*addr = rq->handles[rq->length - 1] & umem->chunk_mask;
 	return addr;
 }
 
-- 
2.17.1

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