diff options
| author | Maxim Mikityanskiy <maximmi@mellanox.com> | 2020-02-14 12:22:49 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@nvidia.com> | 2020-09-22 05:41:14 +0300 |
| commit | 8e4b53f60f7d33cf6c60f790cf506220b2bcbb0f (patch) | |
| tree | 2c263251d0ad753148e1c8d2a82c5f9ec51ea15c /drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h | |
| parent | d02dfcd51f1fa38ab9ff0a18ea791effa128819c (diff) | |
| download | linux-8e4b53f60f7d33cf6c60f790cf506220b2bcbb0f.tar.xz | |
net/mlx5e: Refactor xmit functions
A huge function mlx5e_sq_xmit was split into several to achieve multiple
goals:
1. Reuse the code in IPoIB.
2. Better intergrate with TLS, IPSEC, GENEVE and checksum offloads. Now
it's possible to reserve space in the WQ before running eseg-based
offloads, so:
2.1. It's not needed to copy cseg and eseg after mlx5e_fill_sq_frag_edge
anymore.
2.2. mlx5e_txqsq_get_next_pi will be used instead of the legacy
mlx5e_fill_sq_frag_edge for better code maintainability and reuse.
3. Prepare for the upcoming TX MPWQE for SKBs. It will intervene after
mlx5e_sq_calc_wqe_attr to check if it's possible to use MPWQE, and the
code flow will split into two paths: MPWQE and non-MPWQE.
Two high-level functions are provided to send packets:
* mlx5e_xmit is called by the networking stack, runs offloads and sends
the packet. In one of the following patches, MPWQE support will be added
to this flow.
* mlx5e_sq_xmit_simple is called by the TLS offload, runs only the
checksum offload and sends the packet.
This change has no performance impact in TCP single stream test and
XDP_TX single stream test.
When compiled with a recent GCC, this change shows no visible
performance impact on UDP pktgen (burst 32) single stream test either:
Packet rate: 16.86 Mpps (±0.15 Mpps) -> 16.95 Mpps (±0.15 Mpps)
Instructions per packet: 434 -> 429
Cycles per packet: 158 -> 160
Instructions per cycle: 2.75 -> 2.69
CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz (x86_64)
NIC: Mellanox ConnectX-6 Dx
GCC 10.2.0
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h index 110476bdeffb..23d4ef5ab9c5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h @@ -145,6 +145,11 @@ static inline bool mlx5e_accel_tx_finish(struct mlx5e_priv *priv, } #endif +#if IS_ENABLED(CONFIG_GENEVE) + if (skb->encapsulation) + mlx5e_tx_tunnel_accel(skb, &wqe->eth); +#endif + return true; } |