From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1CA4636B93B; Sat, 17 Oct 2026 16:27:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792254473; cv=none; b=uXOQDHDg7GerY0Bnndc7YKUjkZmRz/mWekl5AQ2Y5RtLUlNju0y+teOOY3AB0BQJBt+JMv96ZyOTQ1gxzH3TUtHgPKlJbXArY0JV0K0H8vqbG2MWrwS3F7svQtJuJ8IKJWUX4srbliQ0f3q8Af0qdUEVishpW8PmfRjJVUs/xM0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792254473; c=relaxed/simple; bh=WYBsI8dYenDZ+PkgfGwY7hxc/fdJ0JPjUqCwa3O+OYE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m2qD6a3olrYKZbNsGBhm6r7zBiPY71ukJyDR2BfNbECjBb7yhxyg+TB6Nbc/RburNW5R82/aesUoOX0omy0ipE7ApuoJctUky2AW6uMoX9+y7Xs65mK3djAWRiLYqA8pTQasSEvU3+sNCJUyjgJQvhB8FeEpkxEkzA7+9BkJ5o8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0d5R/rxq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0d5R/rxq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 729521F000C4; Sat, 17 Oct 2026 16:27:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792254472; bh=QbxGuMoibOMVIOTbiVecuHryVk6PJ69qgECAibOdQ0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0d5R/rxq6a22Xiy1PDV1qNrEQKvFMWUjLvwovpVtklSZlXm4O4j2psTIjVGhvB51X Q51fMiloDyl2jt5BJO93yu2jjvZVu+/+BtMrI7KwyabqaMTqfyNhg9WJ6FlX8/zD0o JWYr31XiZuBW/iC1mL00Jn+fTQLN0Zbdvi5rTMGI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sriharsha Basavapatna , Selvin Xavier , Jason Gunthorpe , Sasha Levin Subject: [PATCH 6.12 457/869] RDMA/bnxt_re: Add a max slot check for SQ Date: Sat, 17 Oct 2026 17:54:58 +0200 Message-ID: <20261017160048.853909485@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160036.979869304@linuxfoundation.org> References: <20261017160036.979869304@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Selvin Xavier [ Upstream commit dc95931b7e1326dacae547874bf38c092e5960d8 ] The variable WQE mode must be validated against the maximum slots supported by HW. The max supported value is 64K. Adding a max and min check and fail if user supplied value is more than the max supported and zero. Fixes: d8ea645d6984 ("RDMA/bnxt_re: Handle variable WQE support for user applications") Link: https://patch.msgid.link/r/20260615224751.232802-10-selvin.xavier@broadcom.com Reviewed-by: Sriharsha Basavapatna Signed-off-by: Selvin Xavier Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 3 +++ drivers/infiniband/hw/bnxt_re/qplib_sp.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 339e9be2e8f24..86de1d9bca6b2 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -1402,6 +1402,9 @@ static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, } qplqp->type = (u8)qptype; qplqp->wqe_mode = bnxt_re_is_var_size_supported(rdev, uctx); + if (uctx && qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE && + (!ureq->sq_slots || ureq->sq_slots > BNXT_RE_MAX_SQ_SLOTS)) + return -EINVAL; if (init_attr->qp_type == IB_QPT_RC) { qplqp->max_rd_atomic = dev_attr->max_qp_rd_atom; qplqp->max_dest_rd_atomic = dev_attr->max_qp_init_rd_atom; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h index fcfef5cbb38d4..92f3131a9a829 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h @@ -357,6 +357,7 @@ int bnxt_qplib_modify_cc(struct bnxt_qplib_res *res, #define BNXT_VAR_MAX_SLOT_ALIGN 256 #define BNXT_VAR_MAX_SGE 13 #define BNXT_RE_MAX_RQ_WQES 65536 +#define BNXT_RE_MAX_SQ_SLOTS 65536 #define BNXT_STATIC_MAX_SGE 6 -- 2.53.0