73 lines
2.8 KiB
Diff
73 lines
2.8 KiB
Diff
Limit qp resources accepted for ibv_create_qp()
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to the limits reported in ib_query_device().
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Make sure that the limits returned to the caller following
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qp creation also lie within the reported device limits.
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(OFED 1.3 libmlx4 commit b612592e2c43472895ccc495183aa63980d8e7a5)
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Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
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Index: libmlx4/src/qp.c
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===================================================================
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--- libmlx4.orig/src/qp.c 2008-06-04 08:24:45.000000000 +0300
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+++ libmlx4/src/qp.c 2008-06-04 08:24:49.000000000 +0300
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@@ -619,6 +619,7 @@ void mlx4_set_sq_sizes(struct mlx4_qp *q
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enum ibv_qp_type type)
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{
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int wqe_size;
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+ struct mlx4_context *ctx = to_mctx(qp->ibv_qp.context);
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wqe_size = (1 << qp->sq.wqe_shift) - sizeof (struct mlx4_wqe_ctrl_seg);
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switch (type) {
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@@ -636,8 +637,9 @@ void mlx4_set_sq_sizes(struct mlx4_qp *q
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}
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qp->sq.max_gs = wqe_size / sizeof (struct mlx4_wqe_data_seg);
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- cap->max_send_sge = qp->sq.max_gs;
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- qp->sq.max_post = qp->sq.wqe_cnt - qp->sq_spare_wqes;
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+ cap->max_send_sge = min(ctx->max_sge, qp->sq.max_gs);
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+ qp->sq.max_post = min(ctx->max_qp_wr,
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+ qp->sq.wqe_cnt - qp->sq_spare_wqes);
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cap->max_send_wr = qp->sq.max_post;
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/*
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Index: libmlx4/src/verbs.c
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===================================================================
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--- libmlx4.orig/src/verbs.c 2008-06-04 08:24:45.000000000 +0300
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+++ libmlx4/src/verbs.c 2008-06-04 08:24:49.000000000 +0300
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@@ -390,12 +390,14 @@ struct ibv_qp *mlx4_create_qp(struct ibv
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struct ibv_create_qp_resp resp;
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struct mlx4_qp *qp;
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int ret;
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+ struct mlx4_context *context = to_mctx(pd->context);
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+
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/* Sanity check QP size before proceeding */
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- if (attr->cap.max_send_wr > 65536 ||
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- attr->cap.max_recv_wr > 65536 ||
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- attr->cap.max_send_sge > 64 ||
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- attr->cap.max_recv_sge > 64 ||
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+ if (attr->cap.max_send_wr > context->max_qp_wr ||
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+ attr->cap.max_recv_wr > context->max_qp_wr ||
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+ attr->cap.max_send_sge > context->max_sge ||
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+ attr->cap.max_recv_sge > context->max_sge ||
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attr->cap.max_inline_data > 1024)
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return NULL;
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@@ -461,8 +463,14 @@ struct ibv_qp *mlx4_create_qp(struct ibv
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goto err_destroy;
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pthread_mutex_unlock(&to_mctx(pd->context)->qp_table_mutex);
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- qp->rq.wqe_cnt = qp->rq.max_post = attr->cap.max_recv_wr;
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+ qp->rq.wqe_cnt = attr->cap.max_recv_wr;
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qp->rq.max_gs = attr->cap.max_recv_sge;
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+
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+ /* adjust rq maxima to not exceed reported device maxima */
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+ attr->cap.max_recv_wr = min(context->max_qp_wr, attr->cap.max_recv_wr);
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+ attr->cap.max_recv_sge = min(context->max_sge, attr->cap.max_recv_sge);
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+
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+ qp->rq.max_post = attr->cap.max_recv_wr;
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mlx4_set_sq_sizes(qp, &attr->cap, attr->qp_type);
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qp->doorbell_qpn = htonl(qp->ibv_qp.qp_num << 8);
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