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Date: Mon, 14 Sep 2015 18:41:28 -0400
From: green@...uxhacker.ru
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org,
Andreas Dilger <andreas.dilger@...el.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Isaac Huang <he.huang@...el.com>,
Oleg Drokin <oleg.drokin@...el.com>
Subject: [PATCH 12/19] staging/lustre/o2iblnd: wrong uses of kib_tx_t::tx_nfrags
From: Isaac Huang <he.huang@...el.com>
The kib_tx_t::tx_nfrags field is the # entries in
the kib_tx_t::tx_frags array, rather than # DMA
mapped entries. So kiblnd_send/kiblnd_recv should
use kib_rdma_desc_t::rd_nfrags instead.
Signed-off-by: Isaac Huang <he.huang@...el.com>
Reviewed-on: http://review.whamcloud.com/12857
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5956
Reviewed-by: Liang Zhen <liang.zhen@...el.com>
Reviewed-by: James Simmons <uja.ornl@...oo.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@...el.com>
Signed-off-by: Oleg Drokin <oleg.drokin@...el.com>
---
.../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h | 3 --
.../staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c | 37 +++++++++++-----------
2 files changed, 19 insertions(+), 21 deletions(-)
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
index 07e81cb..eb08400 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.h
@@ -912,9 +912,6 @@ struct ib_mr *kiblnd_find_dma_mr(kib_hca_dev_t *hdev,
__u64 addr, __u64 size);
void kiblnd_map_rx_descs(kib_conn_t *conn);
void kiblnd_unmap_rx_descs(kib_conn_t *conn);
-int kiblnd_map_tx(lnet_ni_t *ni, kib_tx_t *tx,
- kib_rdma_desc_t *rd, int nfrags);
-void kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx);
void kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node);
struct list_head *kiblnd_pool_alloc_node(kib_poolset_t *ps);
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
index c0f5682..8ab73ee 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c
@@ -40,6 +40,8 @@
#include "o2iblnd.h"
+static void kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx);
+
static void
kiblnd_tx_done(lnet_ni_t *ni, kib_tx_t *tx)
{
@@ -596,8 +598,7 @@ kiblnd_fmr_map_tx(kib_net_t *net, kib_tx_t *tx, kib_rdma_desc_t *rd, int nob)
return 0;
}
-void
-kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx)
+static void kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx)
{
kib_net_t *net = ni->ni_data;
@@ -615,9 +616,8 @@ kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx)
}
}
-int
-kiblnd_map_tx(lnet_ni_t *ni, kib_tx_t *tx,
- kib_rdma_desc_t *rd, int nfrags)
+static int kiblnd_map_tx(lnet_ni_t *ni, kib_tx_t *tx, kib_rdma_desc_t *rd,
+ int nfrags)
{
kib_hca_dev_t *hdev = tx->tx_pool->tpo_hdev;
kib_net_t *net = ni->ni_data;
@@ -1427,6 +1427,7 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
unsigned int payload_offset = lntmsg->msg_offset;
unsigned int payload_nob = lntmsg->msg_len;
kib_msg_t *ibmsg;
+ kib_rdma_desc_t *rd;
kib_tx_t *tx;
int nob;
int rc;
@@ -1470,16 +1471,14 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
}
ibmsg = tx->tx_msg;
-
+ rd = &ibmsg->ibm_u.get.ibgm_rd;
if ((lntmsg->msg_md->md_options & LNET_MD_KIOV) == 0)
- rc = kiblnd_setup_rd_iov(ni, tx,
- &ibmsg->ibm_u.get.ibgm_rd,
+ rc = kiblnd_setup_rd_iov(ni, tx, rd,
lntmsg->msg_md->md_niov,
lntmsg->msg_md->md_iov.iov,
0, lntmsg->msg_md->md_length);
else
- rc = kiblnd_setup_rd_kiov(ni, tx,
- &ibmsg->ibm_u.get.ibgm_rd,
+ rc = kiblnd_setup_rd_kiov(ni, tx, rd,
lntmsg->msg_md->md_niov,
lntmsg->msg_md->md_iov.kiov,
0, lntmsg->msg_md->md_length);
@@ -1490,7 +1489,7 @@ kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg)
return -EIO;
}
- nob = offsetof(kib_get_msg_t, ibgm_rd.rd_frags[tx->tx_nfrags]);
+ nob = offsetof(kib_get_msg_t, ibgm_rd.rd_frags[rd->rd_nfrags]);
ibmsg->ibm_u.get.ibgm_cookie = tx->tx_cookie;
ibmsg->ibm_u.get.ibgm_hdr = *hdr;
@@ -1655,7 +1654,6 @@ kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
kib_msg_t *rxmsg = rx->rx_msg;
kib_conn_t *conn = rx->rx_conn;
kib_tx_t *tx;
- kib_msg_t *txmsg;
int nob;
int post_credit = IBLND_POSTRX_PEER_CREDIT;
int rc = 0;
@@ -1692,7 +1690,10 @@ kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
lnet_finalize(ni, lntmsg, 0);
break;
- case IBLND_MSG_PUT_REQ:
+ case IBLND_MSG_PUT_REQ: {
+ kib_msg_t *txmsg;
+ kib_rdma_desc_t *rd;
+
if (mlen == 0) {
lnet_finalize(ni, lntmsg, 0);
kiblnd_send_completion(rx->rx_conn, IBLND_MSG_PUT_NAK, 0,
@@ -1710,13 +1711,12 @@ kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
}
txmsg = tx->tx_msg;
+ rd = &txmsg->ibm_u.putack.ibpam_rd;
if (kiov == NULL)
- rc = kiblnd_setup_rd_iov(ni, tx,
- &txmsg->ibm_u.putack.ibpam_rd,
+ rc = kiblnd_setup_rd_iov(ni, tx, rd,
niov, iov, offset, mlen);
else
- rc = kiblnd_setup_rd_kiov(ni, tx,
- &txmsg->ibm_u.putack.ibpam_rd,
+ rc = kiblnd_setup_rd_kiov(ni, tx, rd,
niov, kiov, offset, mlen);
if (rc != 0) {
CERROR("Can't setup PUT sink for %s: %d\n",
@@ -1728,7 +1728,7 @@ kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
break;
}
- nob = offsetof(kib_putack_msg_t, ibpam_rd.rd_frags[tx->tx_nfrags]);
+ nob = offsetof(kib_putack_msg_t, ibpam_rd.rd_frags[rd->rd_nfrags]);
txmsg->ibm_u.putack.ibpam_src_cookie = rxmsg->ibm_u.putreq.ibprm_cookie;
txmsg->ibm_u.putack.ibpam_dst_cookie = tx->tx_cookie;
@@ -1741,6 +1741,7 @@ kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed,
/* reposted buffer reserved for PUT_DONE */
post_credit = IBLND_POSTRX_NO_CREDIT;
break;
+ }
case IBLND_MSG_GET_REQ:
if (lntmsg != NULL) {
--
2.1.0
--
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