From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erez Shitrit Subject: [RFC v1 for accelerated IPoIB 21/25] net/mlx5e: Export send function for IB link type Date: Mon, 13 Mar 2017 20:31:32 +0200 Message-ID: <1489429896-10781-22-git-send-email-erezsh@mellanox.com> References: <1489429896-10781-1-git-send-email-erezsh@mellanox.com> Return-path: In-Reply-To: <1489429896-10781-1-git-send-email-erezsh@mellanox.com> Sender: netdev-owner@vger.kernel.org To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, valex@mellanox.com, leonro@mellanox.com, saedm@mellanox.com, erezsh@dev.mellanox.co.il, Erez Shitrit List-Id: linux-rdma@vger.kernel.org The function will be used in IB link in order to send packets. Signed-off-by: Erez Shitrit --- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 55 +++++++++++++++++++++++++ include/linux/mlx5/driver.h | 5 ++- 2 files changed, 59 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 22443ce778ff..fea06be30393 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -435,6 +435,61 @@ netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev) return mlx5e_sq_xmit(sq, skb); } +static int s_ctrl_seg = sizeof(struct mlx5_wqe_ctrl_seg); +static int s_datagram_seg = sizeof(struct mlx5_wqe_datagram_seg); +static int s_pad = sizeof(struct mlx5_wqe_eth_pad); +static int s_eth_seg = sizeof(struct mlx5_wqe_eth_seg); +static netdev_tx_t mlx5i_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb, + struct mlx5_av *av, u32 dqpn, u32 dqkey) +{ + struct mlx5_wq_cyc *wq = &sq->wq; + u16 pi = sq->pc & wq->sz_m1; + void *wqe = mlx5_wq_cyc_get_wqe(wq, pi); + struct mlx5e_tx_wqe_info *wi = &sq->db.txq.wqe_info[pi]; + + struct mlx5_wqe_ctrl_seg *ctrl_seg = wqe; + struct mlx5_wqe_datagram_seg *datagram_seg = + wqe + s_ctrl_seg; + struct mlx5_wqe_eth_pad *pad = + (void *)datagram_seg + s_datagram_seg; + struct mlx5_wqe_eth_seg *ether_seg = + (void *)pad + s_pad; + struct mlx5_wqe_data_seg *data_seg; + + int tot = s_ctrl_seg + s_datagram_seg + s_pad + s_eth_seg; + + memset(wqe, 0, tot); + + mlx5n_sq_build_datagram_seg(sq, datagram_seg, av, dqpn, dqkey, skb); + + mlx5n_sq_build_ether_seg(sq, wi, ether_seg, skb); + + wi->ds_cnt = tot / MLX5_SEND_WQE_DS; + wi->ds_cnt += DIV_ROUND_UP(wi->ihs - sizeof(ether_seg->inline_hdr_start), + MLX5_SEND_WQE_DS); + data_seg = (struct mlx5_wqe_data_seg *)ctrl_seg + wi->ds_cnt; + + if (mlx5n_sq_build_data_seg(sq, wi, data_seg, skb) < 0) + goto out; + + mlx5n_sq_fill_ctrl_seg_and_send(sq, wi, ctrl_seg, skb, pi); + +out: + return NETDEV_TX_OK; +} + +netdev_tx_t mlx5i_xmit(struct sk_buff *skb, void *p, + struct mlx5_av *av, u32 dqpn, u32 dqkey) +{ + struct mlx5e_priv *priv = p; + struct mlx5e_sq *sq; + + sq = priv->txq_to_sq_map[skb_get_queue_mapping(skb)]; + + return mlx5i_sq_xmit(sq, skb, av, dqpn, dqkey); +} +EXPORT_SYMBOL(mlx5i_xmit); + bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq, int napi_budget) { struct mlx5e_sq *sq; diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index c18be51287e7..6d2ac932d321 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -1133,6 +1133,8 @@ struct mlx5i_create_ext_param { u32 qpn; }; +struct mlx5_av; + struct net_device *mlx5i_create_netdev(struct mlx5_core_dev *mdev, const char *name, void (*setup)(struct net_device *dev), @@ -1141,5 +1143,6 @@ struct net_device *mlx5i_create_netdev(struct mlx5_core_dev *mdev, void mlx5i_detach(struct mlx5_core_dev *mdev, void *vpriv); int mlx5i_close(void *vpriv); int mlx5i_open(void *vpriv); - +netdev_tx_t mlx5i_xmit(struct sk_buff *skb, void *p, struct mlx5_av *av, + u32 dqpn, u32 dqkey); #endif /* MLX5_DRIVER_H */ -- 1.8.3.1