98626886ee
This change allows for reusing the transmit path for so called rate limited senqueues. While at it optimise some pointer lookups in the fast path. Sponsored by: Mellanox Technologies MFC after: 1 week
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/*-
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* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "en.h"
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struct mlx5_cqe64 *
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mlx5e_get_cqe(struct mlx5e_cq *cq)
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{
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struct mlx5_cqe64 *cqe;
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cqe = mlx5_cqwq_get_wqe(&cq->wq, mlx5_cqwq_get_ci(&cq->wq));
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if ((cqe->op_own ^ mlx5_cqwq_get_wrap_cnt(&cq->wq)) & MLX5_CQE_OWNER_MASK)
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return (NULL);
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/* ensure cqe content is read after cqe ownership bit */
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rmb();
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return (cqe);
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}
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void
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mlx5e_cq_error_event(struct mlx5_core_cq *mcq, int event)
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{
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struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
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if_printf(cq->priv->ifp, "%s: cqn=0x%.6x event=0x%.2x\n",
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__func__, mcq->cqn, event);
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}
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