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Message-ID: <168019608094.3557870.11753259102366277974.stgit@firesoul>
Date: Thu, 30 Mar 2023 19:08:00 +0200
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: bpf@...r.kernel.org, Stanislav Fomichev <sdf@...gle.com>
Cc: Jesper Dangaard Brouer <brouer@...hat.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, martin.lau@...nel.org,
ast@...nel.org, daniel@...earbox.net, alexandr.lobakin@...el.com,
larysa.zaremba@...el.com, xdp-hints@...-project.net,
anthony.l.nguyen@...el.com, yoong.siang.song@...el.com,
boon.leong.ong@...el.com, intel-wired-lan@...ts.osuosl.org,
pabeni@...hat.com, jesse.brandeburg@...el.com, kuba@...nel.org,
edumazet@...gle.com, john.fastabend@...il.com, hawk@...nel.org,
davem@...emloft.net
Subject: [PATCH bpf RFC-V3 4/5] mlx4: bpf_xdp_metadata_rx_hash add xdp rss
hash type
Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type
via matching indiviual Completion Queue Entry (CQE) status bits.
Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>
---
drivers/net/ethernet/mellanox/mlx4/en_rx.c | 22 ++++++++++++++++++++--
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 3 ++-
2 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 4b5e459b6d49..d3f46d8b4160 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -681,14 +681,32 @@ int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp)
return 0;
}
-int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash)
+int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
+ enum xdp_rss_hash_type *rss_type)
{
struct mlx4_en_xdp_buff *_ctx = (void *)ctx;
+ struct mlx4_cqe *cqe = _ctx->cqe;
+ enum xdp_rss_hash_type xht = 0;
+ __be16 status;
if (unlikely(!(_ctx->dev->features & NETIF_F_RXHASH)))
return -ENODATA;
- *hash = be32_to_cpu(_ctx->cqe->immed_rss_invalid);
+ *hash = be32_to_cpu(cqe->immed_rss_invalid);
+ status = cqe->status;
+ if (status & cpu_to_be16(MLX4_CQE_STATUS_TCP))
+ xht = XDP_RSS_L4_TCP;
+ if (status & cpu_to_be16(MLX4_CQE_STATUS_UDP))
+ xht = XDP_RSS_L4_UDP;
+ if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4|MLX4_CQE_STATUS_IPV4F))
+ xht |= XDP_RSS_L3_IPV4;
+ if (status & cpu_to_be16(MLX4_CQE_STATUS_IPV6)) {
+ xht |= XDP_RSS_L3_IPV6;
+ if (cqe->ipv6_ext_mask)
+ xht |= XDP_RSS_L3_DYNHDR;
+ }
+ *rss_type = xht;
+
return 0;
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 544e09b97483..4ac4d883047b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -798,7 +798,8 @@ int mlx4_en_netdev_event(struct notifier_block *this,
struct xdp_md;
int mlx4_en_xdp_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp);
-int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash);
+int mlx4_en_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
+ enum xdp_rss_hash_type *rss_type);
/*
* Functions for time stamping
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