From: Jesper Dangaard Brouer <brouer@redhat.com>
To: sameehj@amazon.com
Cc: "Jesper Dangaard Brouer" <brouer@redhat.com>,
netdev@vger.kernel.org, bpf@vger.kernel.org,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Daniel Borkmann" <borkmann@iogearbox.net>,
"Alexei Starovoitov" <alexei.starovoitov@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
"John Fastabend" <john.fastabend@gmail.com>,
"Alexander Duyck" <alexander.duyck@gmail.com>,
"Jeff Kirsher" <jeffrey.t.kirsher@intel.com>,
"David Ahern" <dsahern@gmail.com>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
"Lorenzo Bianconi" <lorenzo@kernel.org>,
"Saeed Mahameed" <saeedm@mellanox.com>,
"Tariq Toukan" <tariqt@mellanox.com>
Subject: [PATCH net-next v4 16/33] mlx4: add XDP frame size and adjust max XDP MTU
Date: Thu, 14 May 2020 12:50:18 +0200 [thread overview]
Message-ID: <158945341893.97035.2688142527052329942.stgit@firesoul> (raw)
In-Reply-To: <158945314698.97035.5286827951225578467.stgit@firesoul>
The mlx4 drivers size of memory backing the RX packet is stored in
frag_stride. For XDP mode this will be PAGE_SIZE (normally 4096).
For normal mode frag_stride is 2048.
Also adjust MLX4_EN_MAX_XDP_MTU to take tailroom into account.
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 3 ++-
drivers/net/ethernet/mellanox/mlx4/en_rx.c | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 43dcbd8214c6..5bd3cd37d50f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -51,7 +51,8 @@
#include "en_port.h"
#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
- XDP_PACKET_HEADROOM))
+ XDP_PACKET_HEADROOM - \
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
int mlx4_en_setup_tc(struct net_device *dev, u8 up)
{
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 787139219813..8a10285b0e10 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -683,6 +683,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
rcu_read_lock();
xdp_prog = rcu_dereference(ring->xdp_prog);
xdp.rxq = &ring->xdp_rxq;
+ xdp.frame_sz = priv->frag_info[0].frag_stride;
doorbell_pending = 0;
/* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx
next prev parent reply other threads:[~2020-05-14 10:50 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-14 10:48 [PATCH net-next v4 00/33] XDP extend with knowledge of frame size Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 01/33] xdp: add frame size to xdp_buff Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 02/33] bnxt: add XDP frame size to driver Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 03/33] sfc: add XDP frame size Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 04/33] mvneta: add XDP frame size to driver Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 05/33] net: netsec: Add support for XDP frame size Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 06/33] net: XDP-generic determining " Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 07/33] xdp: xdp_frame add member frame_sz and handle in convert_to_xdp_frame Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 08/33] xdp: cpumap redirect use frame_sz and increase skb_tailroom Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 09/33] veth: adjust hard_start offset on redirect XDP frames Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 10/33] veth: xdp using frame_sz in veth driver Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 11/33] dpaa2-eth: add XDP frame size Jesper Dangaard Brouer
2020-05-14 10:49 ` [PATCH net-next v4 12/33] hv_netvsc: add XDP frame size to driver Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 13/33] qlogic/qede: " Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 14/33] net: ethernet: ti: add XDP frame size to driver cpsw Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 15/33] ena: add XDP frame size to amazon NIC driver Jesper Dangaard Brouer
2020-05-14 10:50 ` Jesper Dangaard Brouer [this message]
2020-05-14 10:50 ` [PATCH net-next v4 17/33] net: thunderx: add XDP frame size Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 18/33] nfp: add XDP frame size to netronome driver Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 19/33] tun: add XDP frame size Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 20/33] vhost_net: also populate " Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 21/33] virtio_net: add XDP frame size in two code paths Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 22/33] ixgbe: fix XDP redirect on archs with PAGE_SIZE above 4K Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 23/33] ixgbe: add XDP frame size to driver Jesper Dangaard Brouer
2020-05-14 10:50 ` [PATCH net-next v4 24/33] ixgbevf: add XDP frame size to VF driver Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 25/33] i40e: add XDP frame size to driver Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 26/33] ice: " Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 27/33] xdp: for Intel AF_XDP drivers add XDP frame_sz Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 28/33] mlx5: rx queue setup time determine frame_sz for XDP Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 29/33] xdp: allow bpf_xdp_adjust_tail() to grow packet size Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 30/33] xdp: clear grow memory in bpf_xdp_adjust_tail() Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 31/33] bpf: add xdp.frame_sz in bpf_prog_test_run_xdp() Jesper Dangaard Brouer
2020-05-17 4:02 ` unstable xdp tests. Was: " Alexei Starovoitov
2020-05-18 9:52 ` Jesper Dangaard Brouer
2020-05-18 10:30 ` Jesper Dangaard Brouer
2020-05-18 19:19 ` Andrii Nakryiko
2020-05-14 10:51 ` [PATCH net-next v4 32/33] selftests/bpf: adjust BPF selftest for xdp_adjust_tail Jesper Dangaard Brouer
2020-05-14 10:51 ` [PATCH net-next v4 33/33] selftests/bpf: xdp_adjust_tail add grow tail tests Jesper Dangaard Brouer
2020-05-15 4:52 ` [PATCH net-next v4 00/33] XDP extend with knowledge of frame size Alexei Starovoitov
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