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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Alexander Lobakin , Yan Zhai , Dragos Tatulea , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: [RFC net-next 8/9] mlx5: apply XDP offloading fixup when building skb Message-ID: <17595a278ee72964b83c0bd0b502152aa025f600.1718919473.git.yan@cloudflare.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a common point to transfer offloading info from XDP context to skb. Signed-off-by: Yan Zhai Signed-off-by: Jesper Dangaard Brouer --- .../net/ethernet/mellanox/mlx5/core/en/xsk/rx.c | 8 ++++++-- drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 14 ++++++++++++++ 2 files changed, 20 insertions(+), 2 deletions(-) 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 4dacaa61e106..9bf49ff2e0dd 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c @@ -250,7 +250,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(str= uct mlx5e_rq *rq, u16 cqe_bcnt, u32 head_offset, u32 page_idx, - struct mlx5e_xdp_buff *mxbuf_) + struct mlx5e_xdp_buff *mxbuf_caller) { struct mlx5e_xdp_buff *mxbuf =3D xsk_buff_to_mxbuf(wi->alloc_units.xsk_bu= ffs[page_idx]); struct bpf_prog *prog; @@ -270,6 +270,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(str= uct mlx5e_rq *rq, =20 /* mxbuf->rq is set on allocation, but cqe is per-packet so set it here */ mxbuf->cqe =3D cqe; + xdp_init_buff_minimal(&mxbuf->xdp); xsk_buff_set_size(&mxbuf->xdp, cqe_bcnt); xsk_buff_dma_sync_for_cpu(&mxbuf->xdp); net_prefetch(mxbuf->xdp.data); @@ -295,6 +296,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(str= uct mlx5e_rq *rq, __set_bit(page_idx, wi->skip_release_bitmap); /* non-atomic */ return NULL; /* page/packet was consumed by XDP */ } + mxbuf_caller->xdp.flags =3D mxbuf->xdp.flags; =20 /* XDP_PASS: copy the data from the UMEM to a new SKB and reuse the * frame. On SKB allocation failure, NULL is returned. @@ -306,7 +308,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct ml= x5e_rq *rq, struct mlx5e_wqe_frag_info *wi, struct mlx5_cqe64 *cqe, u32 cqe_bcnt, - struct mlx5e_xdp_buff *mxbuf_) + struct mlx5e_xdp_buff *mxbuf_caller) { struct mlx5e_xdp_buff *mxbuf =3D xsk_buff_to_mxbuf(*wi->xskp); struct bpf_prog *prog; @@ -320,6 +322,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct ml= x5e_rq *rq, =20 /* mxbuf->rq is set on allocation, but cqe is per-packet so set it here */ mxbuf->cqe =3D cqe; + xdp_init_buff_minimal(&mxbuf->xdp); xsk_buff_set_size(&mxbuf->xdp, cqe_bcnt); xsk_buff_dma_sync_for_cpu(&mxbuf->xdp); net_prefetch(mxbuf->xdp.data); @@ -330,6 +333,7 @@ struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct ml= x5e_rq *rq, wi->flags |=3D BIT(MLX5E_WQE_FRAG_SKIP_RELEASE); return NULL; /* page/packet was consumed by XDP */ } + mxbuf_caller->xdp.flags =3D mxbuf->xdp.flags; =20 /* XDP_PASS: copy the data from the UMEM to a new SKB. The frame reuse * will be handled by mlx5e_free_rx_wqe. diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/= ethernet/mellanox/mlx5/core/en_rx.c index 1a592a1ab988..0a47889e281e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c @@ -1670,6 +1670,8 @@ mlx5e_skb_from_cqe_linear(struct mlx5e_rq *rq, struct= mlx5e_wqe_frag_info *wi, dma_addr_t addr; u32 frag_size; =20 + xdp_init_buff_minimal(&mxbuf->xdp); + va =3D page_address(frag_page->page) + wi->offset; data =3D va + rx_headroom; frag_size =3D MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); @@ -1721,6 +1723,7 @@ mlx5e_skb_from_cqe_nonlinear(struct mlx5e_rq *rq, str= uct mlx5e_wqe_frag_info *wi void *va; =20 frag_page =3D wi->frag_page; + xdp_init_buff_minimal(&mxbuf->xdp); =20 va =3D page_address(frag_page->page) + wi->offset; frag_consumed_bytes =3D min_t(u32, frag_info->frag_size, cqe_bcnt); @@ -1837,6 +1840,7 @@ static void mlx5e_handle_rx_cqe(struct mlx5e_rq *rq, = struct mlx5_cqe64 *cqe) } =20 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); =20 if (mlx5e_cqe_regb_chain(cqe)) if (!mlx5e_tc_update_skb_nic(cqe, skb)) { @@ -1885,6 +1889,7 @@ static void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *= rq, struct mlx5_cqe64 *cqe) } =20 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); =20 if (rep->vlan && skb_vlan_tag_present(skb)) skb_vlan_pop(skb); @@ -1935,6 +1940,7 @@ static void mlx5e_handle_rx_cqe_mpwrq_rep(struct mlx5= e_rq *rq, struct mlx5_cqe64 goto mpwrq_cqe_out; =20 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); =20 mlx5e_rep_tc_receive(cqe, rq, skb); =20 @@ -2138,6 +2144,8 @@ mlx5e_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq, = struct mlx5e_mpw_info *wi, return NULL; } =20 + xdp_init_buff_minimal(&mxbuf->xdp); + va =3D page_address(frag_page->page) + head_offset; data =3D va + rx_headroom; frag_size =3D MLX5_SKB_FRAG_SZ(rx_headroom + cqe_bcnt); @@ -2345,6 +2353,8 @@ static void mlx5e_handle_rx_cqe_mpwrq_shampo(struct m= lx5e_rq *rq, struct mlx5_cq } =20 mlx5e_shampo_complete_rx_cqe(rq, cqe, cqe_bcnt, *skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, *skb); + if (flush && rq->hw_gro_data->skb) mlx5e_shampo_flush_skb(rq, cqe, match); free_hd_entry: @@ -2404,6 +2414,7 @@ static void mlx5e_handle_rx_cqe_mpwrq(struct mlx5e_rq= *rq, struct mlx5_cqe64 *cq goto mpwrq_cqe_out; =20 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); =20 if (mlx5e_cqe_regb_chain(cqe)) if (!mlx5e_tc_update_skb_nic(cqe, skb)) { @@ -2649,6 +2660,8 @@ static void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, = struct mlx5_cqe64 *cqe) goto wq_cyc_pop; =20 mlx5i_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); + if (unlikely(!skb->dev)) { dev_kfree_skb_any(skb); goto wq_cyc_pop; @@ -2740,6 +2753,7 @@ static void mlx5e_trap_handle_rx_cqe(struct mlx5e_rq = *rq, struct mlx5_cqe64 *cqe =20 mlx5e_complete_rx_cqe(rq, cqe, cqe_bcnt, skb); skb_push(skb, ETH_HLEN); + xdp_buff_fixup_skb_offloading(&mxbuf.xdp, skb); =20 mlx5_devlink_trap_report(rq->mdev, trap_id, skb, rq->netdev->devlink_port); --=20 2.30.2