From nobody Wed Sep 16 14:12:37 2026 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hlLSQ2yDdz6rWqB for ; Wed, 16 Sep 2026 14:12:38 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hlLSQ1dk3z3Lcf for ; Wed, 16 Sep 2026 14:12:38 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1789567958; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=UjGcqVPLwjw5ypTRo+51g+wnRzrZK7kpOyMeAUjRJdk=; b=AZ0W9PumFURVOp7zfDU41a/N4M/cm1KURrEOoNba1QEWWPmKE4Yc9d/eBpfvpK6pacamOg l1W46ZAd2QfSGjHmgOF7kVmg4ZJ7kPrNjc22cEROS9qZ4C8PjLwtmp1LNSU7MDWUSZYlwx dwAw4OKnwcA4fjbJ9LpUUGRWajC35DAXiDLL2a7MhFXHYowwMyZdwZ8bR0GMYL/hXkFWtk i+HMtmLqqyUOhA3FFRarEFdtmQRi6Tn5VbylQu2sKjJLCwvT4asxIda1sKF2Hb5sKjuJuL vaYAjKmoGk/aMGtxd+tP5ny5/IQsjsSdhkKgcd/IEtHucTYuneIrBibw3XZqHg== ARC-Seal: i=1; a=rsa-sha256; d=freebsd.org; s=dkim; cv=none; t=1789567958; b=imkhhJoyU8eC2QifCTIBcv0goAneI+F8Dr9dPcYa1rJtwqsm4SoqNoxFIJD4bPh9acmVqi gVaNUKnbbILxGX9JWMtZnO5gT92wCdaFKXnsd7mmngCc5tO1qFAQyffDGzGcHMUrTd393i 9xumBWyABgEM29Zi6VEmLpCVZ9Et9LBdz3rh1LDX0ZmUAEoOR5hqYBtI8hcrMkc+TDgUle d452JmlPD1iLZJ0Ba+7lG//egmLBwmi8QgkIrGyddEfTse6czNAAUJYcJwc/3pyoUm0eA/ x/qpI+gKQ3XLiYxh6/UGl5cTeGH7zOBaeDgExuCzowpXTZaXKgDuComrMf1/PQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1789567958; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=UjGcqVPLwjw5ypTRo+51g+wnRzrZK7kpOyMeAUjRJdk=; b=CWeJId2Uep6ZzK6kawXrH31U6J5OmGOoDMuUhiNeeqLCU90+ZjlMzyYGhY7KxkwPpi87R0 QHmC05AFfADPHAcBoR3bGJ33Y8OuvgW6LqSPE/wWpFmypk2p0E2rtfT33mxxXZZg0zewRa 2qkLpxdg2aaElo3Vae8CZqvKH8yP60QyWDxmk6m5mktIt0hw4vUSJknftuF+qLTeyrdpbx VwPDAsyW5Fq7M1YBU4tvsL/PzIZWg3RCmW4P3EKM7w4LQjGq/hmFr2RwNL2kTJzFnddYvv +DJ/Ix30JwSFNjcknu7HqimeqSZnp/tJ2+GnUDd/tNTSzSQ+ecxKrZQFKKoFtg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4hlLSQ0PsVzr0G for ; Wed, 16 Sep 2026 14:12:38 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3607b by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Wed, 16 Sep 2026 14:12:37 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Vag Singh From: Konstantin Belousov Subject: git: 112ca55eefe8 - main - libmlx5: Extend mlx5dv_get_qp() to return UAR mapping info List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 112ca55eefe8462c86f7507bff52ae4eb6488c71 Auto-Submitted: auto-generated Date: Wed, 16 Sep 2026 14:12:37 +0000 Message-Id: <6aaaa3d5.3607b.2e4333bc@gitrepo.freebsd.org> The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=112ca55eefe8462c86f7507bff52ae4eb6488c71 commit 112ca55eefe8462c86f7507bff52ae4eb6488c71 Author: Vag Singh AuthorDate: 2025-08-12 01:30:33 +0000 Commit: Konstantin Belousov CommitDate: 2026-09-16 14:12:06 +0000 libmlx5: Extend mlx5dv_get_qp() to return UAR mapping info [PATCH 02/31] FreeBSD OFED support for DPDK MLX5 PMD Extend mlx5dv_get_qp() to return UAR mapping info. This can allow a process to share its doorbell access with secondary process by re-mmap the UAR address on the device and make it accessible as a user space address. Differential revision: https://reviews.freebsd.org/D32176 MFC after: 1 month --- contrib/ofed/libmlx5/mlx5.c | 27 +++++++++++++++++++++------ contrib/ofed/libmlx5/mlx5.h | 1 + contrib/ofed/libmlx5/mlx5dv.h | 5 +++++ 3 files changed, 27 insertions(+), 6 deletions(-) diff --git a/contrib/ofed/libmlx5/mlx5.c b/contrib/ofed/libmlx5/mlx5.c index 6fe6cf594c3b..56abaa965a6c 100644 --- a/contrib/ofed/libmlx5/mlx5.c +++ b/contrib/ofed/libmlx5/mlx5.c @@ -667,8 +667,8 @@ static int mlx5dv_get_qp(struct ibv_qp *qp_in, struct mlx5dv_qp *qp_out) { struct mlx5_qp *mqp = to_mqp(qp_in); + uint64_t mask_out = 0; - qp_out->comp_mask = 0; qp_out->dbrec = mqp->db; if (mqp->sq_buf_size) @@ -683,13 +683,20 @@ static int mlx5dv_get_qp(struct ibv_qp *qp_in, qp_out->rq.wqe_cnt = mqp->rq.wqe_cnt; qp_out->rq.stride = 1 << mqp->rq.wqe_shift; - qp_out->bf.reg = mqp->bf->reg; + qp_out->bf.reg = mqp->bf->reg; + + if (qp_out->comp_mask & MLX5DV_QP_MASK_UAR_MMAP_OFFSET) { + qp_out->uar_mmap_offset = mqp->bf->uar_mmap_offset; + mask_out |= MLX5DV_QP_MASK_UAR_MMAP_OFFSET; + } if (mqp->bf->uuarn > 0) qp_out->bf.size = mqp->bf->buf_size; else qp_out->bf.size = 0; + qp_out->comp_mask = mask_out; + return 0; } @@ -774,6 +781,15 @@ static void adjust_uar_info(struct mlx5_device *mdev, context->num_uars_per_page = resp.num_uars_per_page; } +static off_t get_uar_mmap_offset(int idx, int page_size) +{ + off_t offset = 0; + + set_command(MLX5_MMAP_GET_REGULAR_PAGES_CMD, &offset); + set_index(idx, &offset); + return offset * page_size; +} + static int mlx5_init_context(struct verbs_device *vdev, struct ibv_context *ctx, int cmd_fd) { @@ -889,11 +905,9 @@ static int mlx5_init_context(struct verbs_device *vdev, num_sys_page_map = context->tot_uuars / (context->num_uars_per_page * MLX5_NUM_NON_FP_BFREGS_PER_UAR); for (i = 0; i < num_sys_page_map; ++i) { - offset = 0; - set_command(MLX5_MMAP_GET_REGULAR_PAGES_CMD, &offset); - set_index(i, &offset); + offset = get_uar_mmap_offset(i, page_size); context->uar[i] = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, - cmd_fd, page_size * offset); + cmd_fd, offset); if (context->uar[i] == MAP_FAILED) { context->uar[i] = NULL; goto err_db_list_mutex; @@ -913,6 +927,7 @@ static int mlx5_init_context(struct verbs_device *vdev, if (bfi) context->bfs[bfi].buf_size = context->bf_reg_size / 2; context->bfs[bfi].uuarn = bfi; + context->bfs[bfi].uar_mmap_offset = get_uar_mmap_offset(i, page_size); } } } diff --git a/contrib/ofed/libmlx5/mlx5.h b/contrib/ofed/libmlx5/mlx5.h index 456b9ba6db21..74c6685a1e73 100644 --- a/contrib/ofed/libmlx5/mlx5.h +++ b/contrib/ofed/libmlx5/mlx5.h @@ -386,6 +386,7 @@ struct mlx5_bf { unsigned offset; unsigned buf_size; unsigned uuarn; + off_t uar_mmap_offset; }; struct mlx5_mr { diff --git a/contrib/ofed/libmlx5/mlx5dv.h b/contrib/ofed/libmlx5/mlx5dv.h index 5cd0b0d95161..52d8803fb3ab 100644 --- a/contrib/ofed/libmlx5/mlx5dv.h +++ b/contrib/ofed/libmlx5/mlx5dv.h @@ -106,6 +106,10 @@ struct ibv_cq_ex *mlx5dv_create_cq(struct ibv_context *context, int mlx5dv_query_device(struct ibv_context *ctx_in, struct mlx5dv_context *attrs_out); +enum mlx5dv_qp_comp_mask { + MLX5DV_QP_MASK_UAR_MMAP_OFFSET = 1 << 0, +}; + struct mlx5dv_qp { uint32_t *dbrec; struct { @@ -123,6 +127,7 @@ struct mlx5dv_qp { uint32_t size; } bf; uint64_t comp_mask; + off_t uar_mmap_offset; }; struct mlx5dv_cq {