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([2605:6000:8b03:f000:228:31e8:cd20:3a66]) by smtp.gmail.com with ESMTPSA id d7sm858383oop.34.2020.08.21.21.05.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Aug 2020 21:05:43 -0700 (PDT) Subject: Re: [PATCH v3 17/17] rdma_rxe: minor cleanups To: Zhu Yanjun , linux-rdma@vger.kernel.org Cc: Bob Pearson References: <20200820224638.3212-1-rpearson@hpe.com> <20200820224638.3212-18-rpearson@hpe.com> From: Bob Pearson Message-ID: Date: Fri, 21 Aug 2020 23:05:43 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On 8/21/20 9:14 PM, Zhu Yanjun wrote: > On 8/21/2020 6:46 AM, Bob Pearson wrote: >> Added vendor_part_id >> Fixed bug in rxe_resp.c at RKEY_VIOLATION: failed to ack bad rkeys >> Fixed failure to init mr in rxe_resp.c at check_rkey >> Fixed failure to allow invalidation of invalid MWs >> >> Signed-off-by: Bob Pearson >> --- >>   drivers/infiniband/sw/rxe/rxe.c       |  1 + >>   drivers/infiniband/sw/rxe/rxe_mw.c    | 20 ++++++++++++-------- >>   drivers/infiniband/sw/rxe/rxe_param.h |  1 + >>   drivers/infiniband/sw/rxe/rxe_resp.c  |  9 ++++++--- >>   4 files changed, 20 insertions(+), 11 deletions(-) >> >> diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c >> index 10f441ac7203..11b043edd647 100644 >> --- a/drivers/infiniband/sw/rxe/rxe.c >> +++ b/drivers/infiniband/sw/rxe/rxe.c >> @@ -43,6 +43,7 @@ static void rxe_init_device_param(struct rxe_dev *rxe) >>       rxe->max_inline_data            = RXE_MAX_INLINE_DATA; >>         rxe->attr.vendor_id            = RXE_VENDOR_ID; >> +    rxe->attr.vendor_part_id        = RXE_VENDOR_PART_ID; >>       rxe->attr.max_mr_size            = RXE_MAX_MR_SIZE; >>       rxe->attr.page_size_cap            = RXE_PAGE_SIZE_CAP; >>       rxe->attr.max_qp            = RXE_MAX_QP; >> diff --git a/drivers/infiniband/sw/rxe/rxe_mw.c b/drivers/infiniband/sw/rxe/rxe_mw.c >> index 4178cf501a2b..a443deae35a3 100644 >> --- a/drivers/infiniband/sw/rxe/rxe_mw.c >> +++ b/drivers/infiniband/sw/rxe/rxe_mw.c >> @@ -28,7 +28,6 @@ static void rxe_set_mw_rkey(struct rxe_mw *mw) >>       pr_err_once("unable to get random rkey for mw\n"); >>   } >>   -/* this temporary code to test ibv_alloc_mw, ibv_dealloc_mw */ >>   struct ib_mw *rxe_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type, >>                  struct ib_udata *udata) >>   { >> @@ -326,9 +325,12 @@ int rxe_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe) >>     static int check_invalidate_mw(struct rxe_qp *qp, struct rxe_mw *mw) >>   { >> -    if (unlikely(mw->state != RXE_MEM_STATE_VALID)) { >> -        pr_err_once("attempt to invalidate a MW that is not valid\n"); >> -        return -EINVAL; >> +    /* run_test requires invalidate to work when !valid so don't check */ >> +    if (0) { >> +        if (unlikely(mw->state != RXE_MEM_STATE_VALID)) { >> +            pr_err_once("attempt to invalidate a MW that is not valid\n"); >> +            return -EINVAL; >> +        } >>       } >>         /* o10-37.2.26 */ >> @@ -344,9 +346,11 @@ static void do_invalidate_mw(struct rxe_mw *mw) >>   { >>       mw->qp = NULL; >>   -    rxe_drop_ref(mw->mr); >> -    atomic_dec(&mw->mr->num_mw); >> -    mw->mr = NULL; >> +    if (mw->mr) { >> +        rxe_drop_ref(mw->mr); >> +        atomic_dec(&mw->mr->num_mw); >> +        mw->mr = NULL; >> +    } >>         mw->access = 0; >>       mw->addr = 0; >> @@ -378,7 +382,7 @@ int rxe_mw_check_access(struct rxe_qp *qp, struct rxe_mw *mw, >>       struct rxe_pd *pd = to_rpd(mw->ibmw.pd); >>         if (unlikely(mw->state != RXE_MEM_STATE_VALID)) { >> -        pr_err_once("attempt to access a MW that is not in the valid state\n"); >> +        pr_err_once("attempt to access a MW that is not valid\n"); >>           return -EINVAL; >>       } >>   diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h >> index e1d485bdd6af..beaa3f844819 100644 >> --- a/drivers/infiniband/sw/rxe/rxe_param.h >> +++ b/drivers/infiniband/sw/rxe/rxe_param.h >> @@ -107,6 +107,7 @@ enum rxe_device_param { >>         /* IBTA v1.4 A3.3.1 VENDOR INFORMATION section */ >>       RXE_VENDOR_ID            = 0XFFFFFF, >> +    RXE_VENDOR_PART_ID        = 1, > > RXE_VENDOR_PART_ID can be zero. > > Zhu Yanjun > >>   }; >>     /* default/initial rxe port parameters */ >> diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c >> index d6e957a34910..bf7ef56aaf1c 100644 >> --- a/drivers/infiniband/sw/rxe/rxe_resp.c >> +++ b/drivers/infiniband/sw/rxe/rxe_resp.c >> @@ -392,8 +392,8 @@ static enum resp_states check_length(struct rxe_qp *qp, >>   static enum resp_states check_rkey(struct rxe_qp *qp, >>                      struct rxe_pkt_info *pkt) >>   { >> -    struct rxe_mr *mr; >> -    struct rxe_mw *mw; >> +    struct rxe_mr *mr = NULL; >> +    struct rxe_mw *mw = NULL; >>       struct rxe_dev *rxe = to_rdev(qp->ibqp.device); >>       u64 va; >>       u32 rkey; >> @@ -1368,7 +1368,10 @@ int rxe_responder(void *arg) >>                   /* Class C */ >>                   do_class_ac_error(qp, AETH_NAK_REM_ACC_ERR, >>                             IB_WC_REM_ACCESS_ERR); >> -                state = RESPST_COMPLETE; >> +                if (qp->resp.wqe) >> +                    state = RESPST_COMPLETE; >> +                else >> +                    state = RESPST_ACKNOWLEDGE; >>               } else { >>                   qp->resp.drop_msg = 1; >>                   if (qp->srq) { > > > I would agree but the pyverbs tests do not agree. If someone will fix the test I would be happy to leave it zero.