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 957C92DF3EA; Tue, 21 Jul 2026 18:53:18 +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=1784659999; cv=none; b=eJo6iVmbpYlsGbC2fUZm16c8Zo86Qs//LXjY/JwckkxwzD0lKGi4mTLRW60iFR5vjJfJ8G2P3VBZBFtliaNU78Yl7EoTfuErFpmpRpodMq/fDFFh7aWSurL4QzIt6SzkGaQpiEQqhttX6ohcWEpFmEq9t/TN2f0g77qY8R+LhtM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784659999; c=relaxed/simple; bh=geoh1+f0SeEhJgxS6ArO6VdGdhQV82b6Jd/UqgqcppU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LI0VXru2aJX1s58Ch8Xghgs/Bhs8IW+5xnI+Ue4h0RVD8BUxsw7ywLGvT3wqtXxaOSrzdyujTxQLUSaI955daoDSPyDFpb4P6YW7MKdGUcldGlCoSSZbXo3DgXnetyseZRCdV6RkBsa9JgOIGbwv99DOX2t9ytXGqYJQ6GOCmTk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=aNlkNLxj; 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="aNlkNLxj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0770D1F00ACF; Tue, 21 Jul 2026 18:53:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784659998; bh=+lp6x428u6HM8mflHIFwC/4xfsNaoI7ZuCf2zShbAX0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=aNlkNLxjmGybKrgIRqr39f21T9QKkCcI+DijojG+yqTpYwks/Q864awQCKJYnvgGj kqMFfrMZE+oMTwNtEv7WOy+gwaBNkkMcwrBI+8m/GuTz80gjAJZ01KfMrLSKxuz6vC wqibGiznRkuCIOKLhP5fZEGKehtWqXZbZLlMvjHY= 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 7.1 0812/2077] RDMA/bnxt_re: Add a max slot check for SQ Date: Tue, 21 Jul 2026 17:08:05 +0200 Message-ID: <20260721152611.944203779@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152552.646164743@linuxfoundation.org> References: <20260721152552.646164743@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.1-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 e97c17727da162..24270371a0a562 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -1721,6 +1721,9 @@ static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd, return qptype; 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 (fixed_que_attr) { if (qplqp->wqe_mode != BNXT_QPLIB_WQE_MODE_VARIABLE) return -EOPNOTSUPP; diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h index 9fadd637cb5b10..c4193ae75b54da 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h +++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h @@ -369,6 +369,7 @@ int bnxt_qplib_destroy_flow(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