From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-174.mta1.migadu.com (out-174.mta1.migadu.com [95.215.58.174]) (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 0FA1420ADCE for ; Mon, 16 Dec 2024 16:47:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734367646; cv=none; b=ZEYqn8x8fyPetsoDJ2uUi3cblJwBmdR/55sZbFVTqwNVBhi2juYRuBSh3R3GMa5w3BhuY3rQKf1aP6V17IsoBq4TdBWqPe3J/C0VHc8VOdEnwuMJnbaclFwW6DbqMDgXOfBuGhsrAcA4nrK/ZJlTB12K/TkRg291seKk4y6piMA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734367646; c=relaxed/simple; bh=8Q1js+pcs8/n4rytudeIN8FuQ/fPk7XU2j+tixD6Ao4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=CwpaUfBx5OGKAQNhKtkt/dDpF8EYVvvSBLoeuihXo6oRWK8aBcri3Y53lx1vrA/F8tJUBUIRXyxrO/7UosnhDsj606xWDT72G7O7BP7ohIshXaP4QVFXyWSyru6JP1EajbmTtKD1IGsVET1OsqYFR/QJzxYIH2URjLxoPmKwQFY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=exfyr9mW; arc=none smtp.client-ip=95.215.58.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="exfyr9mW" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1734367632; 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: in-reply-to:in-reply-to:references:references; bh=skTx0h9TH3DNtnegz4CJL4HMrceOqd6LbXCDG8zrIto=; b=exfyr9mWtCx+Tvg/549jdKiZtgeUr3etAll3gsc6DiUfX7ar1SX9JdBfUe8ccrzA/BmSTt eIRKE9Nop2E3tushrQAR+PqDNCD+JScwnsUqfvNmifb5z5C2fBwiI2bsW7cilbqPRnLKkx /nr0eCBnGitylWlNB2ufauUDjHAfUqo= Date: Mon, 16 Dec 2024 17:47:06 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH] RDMA/rxe: Fix mismatched max_msg_sz To: zhenwei pi , linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zyjzyj2000@gmail.com, jgg@ziepe.ca, leon@kernel.org References: <20241216121953.765331-1-pizhenwei@bytedance.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zhu Yanjun In-Reply-To: <20241216121953.765331-1-pizhenwei@bytedance.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 在 2024/12/16 13:19, zhenwei pi 写道: > User mode queries max_msg_sz as 0x800000 by command 'ibv_devinfo -v', > however ibv_post_send/ibv_post_recv has a limit of 2^31. Fix this > mismatched information. > This is a buf fix. Perhaps Fixes tag is needed? > Signed-off-by: zhenwei pi > --- > drivers/infiniband/sw/rxe/rxe_param.h | 2 +- > drivers/infiniband/sw/rxe/rxe_verbs.c | 5 ++--- > 2 files changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h > index d2f57ead78ad..003f681e5dc0 100644 > --- a/drivers/infiniband/sw/rxe/rxe_param.h > +++ b/drivers/infiniband/sw/rxe/rxe_param.h > @@ -129,7 +129,7 @@ enum rxe_device_param { > enum rxe_port_param { > RXE_PORT_GID_TBL_LEN = 1024, > RXE_PORT_PORT_CAP_FLAGS = IB_PORT_CM_SUP, > - RXE_PORT_MAX_MSG_SZ = 0x800000, > + RXE_PORT_MAX_MSG_SZ = (1UL << 31), In the above, perhaps the parentheses is not necessary. Except that, I am fine with this. Thanks a lot. Review-by: Zhu Yanjun Zhu Yanjun > RXE_PORT_BAD_PKEY_CNTR = 0, > RXE_PORT_QKEY_VIOL_CNTR = 0, > RXE_PORT_LID = 0, > diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c > index 5c18f7e342f2..ffd5b07ad3e6 100644 > --- a/drivers/infiniband/sw/rxe/rxe_verbs.c > +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c > @@ -688,7 +688,7 @@ static int validate_send_wr(struct rxe_qp *qp, const struct ib_send_wr *ibwr, > for (i = 0; i < ibwr->num_sge; i++) > length += ibwr->sg_list[i].length; > > - if (length > (1UL << 31)) { > + if (length > RXE_PORT_MAX_MSG_SZ) { > rxe_err_qp(qp, "message length too long\n"); > break; > } > @@ -972,8 +972,7 @@ static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr) > for (i = 0; i < num_sge; i++) > length += ibwr->sg_list[i].length; > > - /* IBA max message size is 2^31 */ > - if (length >= (1UL<<31)) { > + if (length > RXE_PORT_MAX_MSG_SZ) { > err = -EINVAL; > rxe_dbg("message length too long\n"); > goto err_out;