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IB/ulps: Avoid calling ib_query_device 

Instead, use the cached copy of the attributes present on the device.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Or Gerlitz 2015-12-18 10:59:46 +02:00 committed by Doug Ledford
parent 86bee4c9c1
commit 4a061b287b
12 changed files with 62 additions and 141 deletions
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19
drivers/infiniband/ulp/ipoib/ipoib_cm.c
View File

@ -1522,8 +1522,7 @@ static void ipoib_cm_create_srq(struct net_device *dev, int max_sge)
int ipoib_cm_dev_init(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
int i, ret;
struct ib_device_attr attr;
int max_srq_sge, i;
INIT_LIST_HEAD(&priv->cm.passive_ids);
INIT_LIST_HEAD(&priv->cm.reap_list);
@ -1540,19 +1539,13 @@ int ipoib_cm_dev_init(struct net_device *dev)
skb_queue_head_init(&priv->cm.skb_queue);
ret = ib_query_device(priv->ca, &attr);
if (ret) {
printk(KERN_WARNING "ib_query_device() failed with %d\n", ret);
return ret;
}
ipoib_dbg(priv, "max_srq_sge=%d\n", priv->ca->attrs.max_srq_sge);
ipoib_dbg(priv, "max_srq_sge=%d\n", attr.max_srq_sge);
attr.max_srq_sge = min_t(int, IPOIB_CM_RX_SG, attr.max_srq_sge);
ipoib_cm_create_srq(dev, attr.max_srq_sge);
max_srq_sge = min_t(int, IPOIB_CM_RX_SG, priv->ca->attrs.max_srq_sge);
ipoib_cm_create_srq(dev, max_srq_sge);
if (ipoib_cm_has_srq(dev)) {
priv->cm.max_cm_mtu = attr.max_srq_sge * PAGE_SIZE - 0x10;
priv->cm.num_frags = attr.max_srq_sge;
priv->cm.max_cm_mtu = max_srq_sge * PAGE_SIZE - 0x10;
priv->cm.num_frags = max_srq_sge;
ipoib_dbg(priv, "max_cm_mtu = 0x%x, num_frags=%d\n",
priv->cm.max_cm_mtu, priv->cm.num_frags);
} else {

12
drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
View File

@ -40,15 +40,11 @@ static void ipoib_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct ipoib_dev_priv *priv = netdev_priv(netdev);
struct ib_device_attr *attr;
attr = kmalloc(sizeof(*attr), GFP_KERNEL);
if (attr && !ib_query_device(priv->ca, attr))
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%d.%d.%d", (int)(attr->fw_ver >> 32),
(int)(attr->fw_ver >> 16) & 0xffff,
(int)attr->fw_ver & 0xffff);
kfree(attr);
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%d.%d.%d", (int)(priv->ca->attrs.fw_ver >> 32),
(int)(priv->ca->attrs.fw_ver >> 16) & 0xffff,
(int)priv->ca->attrs.fw_ver & 0xffff);
strlcpy(drvinfo->bus_info, dev_name(priv->ca->dma_device),
sizeof(drvinfo->bus_info));

21
drivers/infiniband/ulp/ipoib/ipoib_main.c
View File

@ -1777,26 +1777,7 @@ int ipoib_add_pkey_attr(struct net_device *dev)
int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca)
{
struct ib_device_attr *device_attr;
int result = -ENOMEM;
device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
if (!device_attr) {
printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
hca->name, sizeof *device_attr);
return result;
}
result = ib_query_device(hca, device_attr);
if (result) {
printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
hca->name, result);
kfree(device_attr);
return result;
}
priv->hca_caps = device_attr->device_cap_flags;
kfree(device_attr);
priv->hca_caps = hca->attrs.device_cap_flags;
if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
priv->dev->hw_features = NETIF_F_SG |

4
drivers/infiniband/ulp/iser/iscsi_iser.c
View File

@ -644,7 +644,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
ib_conn = &iser_conn->ib_conn;
if (ib_conn->pi_support) {
u32 sig_caps = ib_conn->device->dev_attr.sig_prot_cap;
u32 sig_caps = ib_conn->device->ib_device->attrs.sig_prot_cap;
scsi_host_set_prot(shost, iser_dif_prot_caps(sig_caps));
scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP |
@ -656,7 +656,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
* max fastreg page list length.
*/
shost->sg_tablesize = min_t(unsigned short, shost->sg_tablesize,
ib_conn->device->dev_attr.max_fast_reg_page_list_len);
ib_conn->device->ib_device->attrs.max_fast_reg_page_list_len);
shost->max_sectors = min_t(unsigned int,
1024, (shost->sg_tablesize * PAGE_SIZE) >> 9);

2
drivers/infiniband/ulp/iser/iscsi_iser.h
View File

@ -380,7 +380,6 @@ struct iser_reg_ops {
*
* @ib_device: RDMA device
* @pd: Protection Domain for this device
* @dev_attr: Device attributes container
* @mr: Global DMA memory region
* @event_handler: IB events handle routine
* @ig_list: entry in devices list
@ -393,7 +392,6 @@ struct iser_reg_ops {
struct iser_device {
struct ib_device *ib_device;
struct ib_pd *pd;
struct ib_device_attr dev_attr;
struct ib_mr *mr;
struct ib_event_handler event_handler;
struct list_head ig_list;

9
drivers/infiniband/ulp/iser/iser_memory.c
View File

@ -69,15 +69,14 @@ static struct iser_reg_ops fmr_ops = {
int iser_assign_reg_ops(struct iser_device *device)
{
struct ib_device_attr *dev_attr = &device->dev_attr;
struct ib_device *ib_dev = device->ib_device;
/* Assign function handles - based on FMR support */
if (device->ib_device->alloc_fmr && device->ib_device->dealloc_fmr &&
device->ib_device->map_phys_fmr && device->ib_device->unmap_fmr) {
if (ib_dev->alloc_fmr && ib_dev->dealloc_fmr &&
ib_dev->map_phys_fmr && ib_dev->unmap_fmr) {
iser_info("FMR supported, using FMR for registration\n");
device->reg_ops = &fmr_ops;
} else
if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) {
} else if (ib_dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) {
iser_info("FastReg supported, using FastReg for registration\n");
device->reg_ops = &fastreg_ops;
} else {

38
drivers/infiniband/ulp/iser/iser_verbs.c
View File

@ -78,34 +78,28 @@ static void iser_event_handler(struct ib_event_handler *handler,
*/
static int iser_create_device_ib_res(struct iser_device *device)
{
struct ib_device_attr *dev_attr = &device->dev_attr;
struct ib_device *ib_dev = device->ib_device;
int ret, i, max_cqe;
ret = ib_query_device(device->ib_device, dev_attr);
if (ret) {
pr_warn("Query device failed for %s\n", device->ib_device->name);
return ret;
}
ret = iser_assign_reg_ops(device);
if (ret)
return ret;
device->comps_used = min_t(int, num_online_cpus(),
device->ib_device->num_comp_vectors);
ib_dev->num_comp_vectors);
device->comps = kcalloc(device->comps_used, sizeof(*device->comps),
GFP_KERNEL);
if (!device->comps)
goto comps_err;
max_cqe = min(ISER_MAX_CQ_LEN, dev_attr->max_cqe);
max_cqe = min(ISER_MAX_CQ_LEN, ib_dev->attrs.max_cqe);
iser_info("using %d CQs, device %s supports %d vectors max_cqe %d\n",
device->comps_used, device->ib_device->name,
device->ib_device->num_comp_vectors, max_cqe);
device->comps_used, ib_dev->name,
ib_dev->num_comp_vectors, max_cqe);
device->pd = ib_alloc_pd(device->ib_device);
device->pd = ib_alloc_pd(ib_dev);
if (IS_ERR(device->pd))
goto pd_err;
@ -116,7 +110,7 @@ static int iser_create_device_ib_res(struct iser_device *device)
comp->device = device;
cq_attr.cqe = max_cqe;
cq_attr.comp_vector = i;
comp->cq = ib_create_cq(device->ib_device,
comp->cq = ib_create_cq(ib_dev,
iser_cq_callback,
iser_cq_event_callback,
(void *)comp,
@ -464,7 +458,7 @@ static int iser_create_ib_conn_res(struct ib_conn *ib_conn)
struct iser_conn *iser_conn = container_of(ib_conn, struct iser_conn,
ib_conn);
struct iser_device *device;
struct ib_device_attr *dev_attr;
struct ib_device *ib_dev;
struct ib_qp_init_attr init_attr;
int ret = -ENOMEM;
int index, min_index = 0;
@ -472,7 +466,7 @@ static int iser_create_ib_conn_res(struct ib_conn *ib_conn)
BUG_ON(ib_conn->device == NULL);
device = ib_conn->device;
dev_attr = &device->dev_attr;
ib_dev = device->ib_device;
memset(&init_attr, 0, sizeof init_attr);
@ -503,16 +497,16 @@ static int iser_create_ib_conn_res(struct ib_conn *ib_conn)
iser_conn->max_cmds =
ISER_GET_MAX_XMIT_CMDS(ISER_QP_SIG_MAX_REQ_DTOS);
} else {
if (dev_attr->max_qp_wr > ISER_QP_MAX_REQ_DTOS) {
if (ib_dev->attrs.max_qp_wr > ISER_QP_MAX_REQ_DTOS) {
init_attr.cap.max_send_wr = ISER_QP_MAX_REQ_DTOS + 1;
iser_conn->max_cmds =
ISER_GET_MAX_XMIT_CMDS(ISER_QP_MAX_REQ_DTOS);
} else {
init_attr.cap.max_send_wr = dev_attr->max_qp_wr;
init_attr.cap.max_send_wr = ib_dev->attrs.max_qp_wr;
iser_conn->max_cmds =
ISER_GET_MAX_XMIT_CMDS(dev_attr->max_qp_wr);
ISER_GET_MAX_XMIT_CMDS(ib_dev->attrs.max_qp_wr);
iser_dbg("device %s supports max_send_wr %d\n",
device->ib_device->name, dev_attr->max_qp_wr);
device->ib_device->name, ib_dev->attrs.max_qp_wr);
}
}
@ -756,7 +750,7 @@ iser_calc_scsi_params(struct iser_conn *iser_conn,
sg_tablesize = DIV_ROUND_UP(max_sectors * 512, SIZE_4K);
sup_sg_tablesize = min_t(unsigned, ISCSI_ISER_MAX_SG_TABLESIZE,
device->dev_attr.max_fast_reg_page_list_len);
device->ib_device->attrs.max_fast_reg_page_list_len);
if (sg_tablesize > sup_sg_tablesize) {
sg_tablesize = sup_sg_tablesize;
@ -799,7 +793,7 @@ static void iser_addr_handler(struct rdma_cm_id *cma_id)
/* connection T10-PI support */
if (iser_pi_enable) {
if (!(device->dev_attr.device_cap_flags &
if (!(device->ib_device->attrs.device_cap_flags &
IB_DEVICE_SIGNATURE_HANDOVER)) {
iser_warn("T10-PI requested but not supported on %s, "
"continue without T10-PI\n",
@ -841,7 +835,7 @@ static void iser_route_handler(struct rdma_cm_id *cma_id)
goto failure;
memset(&conn_param, 0, sizeof conn_param);
conn_param.responder_resources = device->dev_attr.max_qp_rd_atom;
conn_param.responder_resources = device->ib_device->attrs.max_qp_rd_atom;
conn_param.initiator_depth = 1;
conn_param.retry_count = 7;
conn_param.rnr_retry_count = 6;

47
drivers/infiniband/ulp/isert/ib_isert.c
View File

@ -95,22 +95,6 @@ isert_qp_event_callback(struct ib_event *e, void *context)
}
}
static int
isert_query_device(struct ib_device *ib_dev, struct ib_device_attr *devattr)
{
int ret;
ret = ib_query_device(ib_dev, devattr);
if (ret) {
isert_err("ib_query_device() failed: %d\n", ret);
return ret;
}
isert_dbg("devattr->max_sge: %d\n", devattr->max_sge);
isert_dbg("devattr->max_sge_rd: %d\n", devattr->max_sge_rd);
return 0;
}
static struct isert_comp *
isert_comp_get(struct isert_conn *isert_conn)
{
@ -157,9 +141,9 @@ isert_create_qp(struct isert_conn *isert_conn,
attr.recv_cq = comp->cq;
attr.cap.max_send_wr = ISERT_QP_MAX_REQ_DTOS;
attr.cap.max_recv_wr = ISERT_QP_MAX_RECV_DTOS + 1;
attr.cap.max_send_sge = device->dev_attr.max_sge;
isert_conn->max_sge = min(device->dev_attr.max_sge,
device->dev_attr.max_sge_rd);
attr.cap.max_send_sge = device->ib_device->attrs.max_sge;
isert_conn->max_sge = min(device->ib_device->attrs.max_sge,
device->ib_device->attrs.max_sge_rd);
attr.cap.max_recv_sge = 1;
attr.sq_sig_type = IB_SIGNAL_REQ_WR;
attr.qp_type = IB_QPT_RC;
@ -287,8 +271,7 @@ isert_free_comps(struct isert_device *device)
}
static int
isert_alloc_comps(struct isert_device *device,
struct ib_device_attr *attr)
isert_alloc_comps(struct isert_device *device)
{
int i, max_cqe, ret = 0;
@ -308,7 +291,7 @@ isert_alloc_comps(struct isert_device *device,
return -ENOMEM;
}
max_cqe = min(ISER_MAX_CQ_LEN, attr->max_cqe);
max_cqe = min(ISER_MAX_CQ_LEN, device->ib_device->attrs.max_cqe);
for (i = 0; i < device->comps_used; i++) {
struct ib_cq_init_attr cq_attr = {};
@ -344,17 +327,15 @@ isert_alloc_comps(struct isert_device *device,
static int
isert_create_device_ib_res(struct isert_device *device)
{
struct ib_device_attr *dev_attr;
struct ib_device *ib_dev = device->ib_device;
int ret;
dev_attr = &device->dev_attr;
ret = isert_query_device(device->ib_device, dev_attr);
if (ret)
return ret;
isert_dbg("devattr->max_sge: %d\n", ib_dev->attrs.max_sge);
isert_dbg("devattr->max_sge_rd: %d\n", ib_dev->attrs.max_sge_rd);
/* asign function handlers */
if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS &&
dev_attr->device_cap_flags & IB_DEVICE_SIGNATURE_HANDOVER) {
if (ib_dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS &&
ib_dev->attrs.device_cap_flags & IB_DEVICE_SIGNATURE_HANDOVER) {
device->use_fastreg = 1;
device->reg_rdma_mem = isert_reg_rdma;
device->unreg_rdma_mem = isert_unreg_rdma;
@ -364,11 +345,11 @@ isert_create_device_ib_res(struct isert_device *device)
device->unreg_rdma_mem = isert_unmap_cmd;
}
ret = isert_alloc_comps(device, dev_attr);
ret = isert_alloc_comps(device);
if (ret)
return ret;
device->pd = ib_alloc_pd(device->ib_device);
device->pd = ib_alloc_pd(ib_dev);
if (IS_ERR(device->pd)) {
ret = PTR_ERR(device->pd);
isert_err("failed to allocate pd, device %p, ret=%d\n",
@ -377,7 +358,7 @@ isert_create_device_ib_res(struct isert_device *device)
}
/* Check signature cap */
device->pi_capable = dev_attr->device_cap_flags &
device->pi_capable = ib_dev->attrs.device_cap_flags &
IB_DEVICE_SIGNATURE_HANDOVER ? true : false;
return 0;
@ -714,7 +695,7 @@ isert_connect_request(struct rdma_cm_id *cma_id, struct rdma_cm_event *event)
/* Set max inflight RDMA READ requests */
isert_conn->initiator_depth = min_t(u8,
event->param.conn.initiator_depth,
device->dev_attr.max_qp_init_rd_atom);
device->ib_device->attrs.max_qp_init_rd_atom);
isert_dbg("Using initiator_depth: %u\n", isert_conn->initiator_depth);
ret = isert_conn_setup_qp(isert_conn, cma_id);

1
drivers/infiniband/ulp/isert/ib_isert.h
View File

@ -207,7 +207,6 @@ struct isert_device {
struct isert_comp *comps;
int comps_used;
struct list_head dev_node;
struct ib_device_attr dev_attr;
int (*reg_rdma_mem)(struct iscsi_conn *conn,
struct iscsi_cmd *cmd,
struct isert_rdma_wr *wr);

32
drivers/infiniband/ulp/srp/ib_srp.c
View File

@ -3439,27 +3439,17 @@ static struct srp_host *srp_add_port(struct srp_device *device, u8 port)
static void srp_add_one(struct ib_device *device)
{
struct srp_device *srp_dev;
struct ib_device_attr *dev_attr;
struct srp_host *host;
int mr_page_shift, p;
u64 max_pages_per_mr;
dev_attr = kmalloc(sizeof *dev_attr, GFP_KERNEL);
if (!dev_attr)
return;
if (ib_query_device(device, dev_attr)) {
pr_warn("Query device failed for %s\n", device->name);
goto free_attr;
}
srp_dev = kmalloc(sizeof *srp_dev, GFP_KERNEL);
if (!srp_dev)
goto free_attr;
return;
srp_dev->has_fmr = (device->alloc_fmr && device->dealloc_fmr &&
device->map_phys_fmr && device->unmap_fmr);
srp_dev->has_fr = (dev_attr->device_cap_flags &
srp_dev->has_fr = (device->attrs.device_cap_flags &
IB_DEVICE_MEM_MGT_EXTENSIONS);
if (!srp_dev->has_fmr && !srp_dev->has_fr)
dev_warn(&device->dev, "neither FMR nor FR is supported\n");
@ -3473,23 +3463,23 @@ static void srp_add_one(struct ib_device *device)
* minimum of 4096 bytes. We're unlikely to build large sglists
* out of smaller entries.
*/
mr_page_shift = max(12, ffs(dev_attr->page_size_cap) - 1);
mr_page_shift = max(12, ffs(device->attrs.page_size_cap) - 1);
srp_dev->mr_page_size = 1 << mr_page_shift;
srp_dev->mr_page_mask = ~((u64) srp_dev->mr_page_size - 1);
max_pages_per_mr = dev_attr->max_mr_size;
max_pages_per_mr = device->attrs.max_mr_size;
do_div(max_pages_per_mr, srp_dev->mr_page_size);
srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR,
max_pages_per_mr);
if (srp_dev->use_fast_reg) {
srp_dev->max_pages_per_mr =
min_t(u32, srp_dev->max_pages_per_mr,
dev_attr->max_fast_reg_page_list_len);
device->attrs.max_fast_reg_page_list_len);
}
srp_dev->mr_max_size = srp_dev->mr_page_size *
srp_dev->max_pages_per_mr;
pr_debug("%s: mr_page_shift = %d, dev_attr->max_mr_size = %#llx, dev_attr->max_fast_reg_page_list_len = %u, max_pages_per_mr = %d, mr_max_size = %#x\n",
device->name, mr_page_shift, dev_attr->max_mr_size,
dev_attr->max_fast_reg_page_list_len,
pr_debug("%s: mr_page_shift = %d, device->max_mr_size = %#llx, device->max_fast_reg_page_list_len = %u, max_pages_per_mr = %d, mr_max_size = %#x\n",
device->name, mr_page_shift, device->attrs.max_mr_size,
device->attrs.max_fast_reg_page_list_len,
srp_dev->max_pages_per_mr, srp_dev->mr_max_size);
INIT_LIST_HEAD(&srp_dev->dev_list);
@ -3517,17 +3507,13 @@ static void srp_add_one(struct ib_device *device)
}
ib_set_client_data(device, &srp_client, srp_dev);
goto free_attr;
return;
err_pd:
ib_dealloc_pd(srp_dev->pd);
free_dev:
kfree(srp_dev);
free_attr:
kfree(dev_attr);
}
static void srp_remove_one(struct ib_device *device, void *client_data)

15
drivers/infiniband/ulp/srpt/ib_srpt.c
View File

@ -341,10 +341,10 @@ static void srpt_get_ioc(struct srpt_port *sport, u32 slot,
memset(iocp, 0, sizeof *iocp);
strcpy(iocp->id_string, SRPT_ID_STRING);
iocp->guid = cpu_to_be64(srpt_service_guid);
iocp->vendor_id = cpu_to_be32(sdev->dev_attr.vendor_id);
iocp->device_id = cpu_to_be32(sdev->dev_attr.vendor_part_id);
iocp->device_version = cpu_to_be16(sdev->dev_attr.hw_ver);
iocp->subsys_vendor_id = cpu_to_be32(sdev->dev_attr.vendor_id);
iocp->vendor_id = cpu_to_be32(sdev->device->attrs.vendor_id);
iocp->device_id = cpu_to_be32(sdev->device->attrs.vendor_part_id);
iocp->device_version = cpu_to_be16(sdev->device->attrs.hw_ver);
iocp->subsys_vendor_id = cpu_to_be32(sdev->device->attrs.vendor_id);
iocp->subsys_device_id = 0x0;
iocp->io_class = cpu_to_be16(SRP_REV16A_IB_IO_CLASS);
iocp->io_subclass = cpu_to_be16(SRP_IO_SUBCLASS);
@ -3203,14 +3203,11 @@ static void srpt_add_one(struct ib_device *device)
init_waitqueue_head(&sdev->ch_releaseQ);
spin_lock_init(&sdev->spinlock);
if (ib_query_device(device, &sdev->dev_attr))
goto free_dev;
sdev->pd = ib_alloc_pd(device);
if (IS_ERR(sdev->pd))
goto free_dev;
sdev->srq_size = min(srpt_srq_size, sdev->dev_attr.max_srq_wr);
sdev->srq_size = min(srpt_srq_size, sdev->device->attrs.max_srq_wr);
srq_attr.event_handler = srpt_srq_event;
srq_attr.srq_context = (void *)sdev;
@ -3224,7 +3221,7 @@ static void srpt_add_one(struct ib_device *device)
goto err_pd;
pr_debug("%s: create SRQ #wr= %d max_allow=%d dev= %s\n",
__func__, sdev->srq_size, sdev->dev_attr.max_srq_wr,
__func__, sdev->srq_size, sdev->device->attrs.max_srq_wr,
device->name);
if (!srpt_service_guid)

3
drivers/infiniband/ulp/srpt/ib_srpt.h
View File

@ -379,8 +379,6 @@ struct srpt_port {
* @mr: L_Key (local key) with write access to all local memory.
* @srq: Per-HCA SRQ (shared receive queue).
* @cm_id: Connection identifier.
* @dev_attr: Attributes of the InfiniBand device as obtained during the
* ib_client.add() callback.
* @srq_size: SRQ size.
* @ioctx_ring: Per-HCA SRQ.
* @rch_list: Per-device channel list -- see also srpt_rdma_ch.list.
@ -395,7 +393,6 @@ struct srpt_device {
struct ib_pd *pd;
struct ib_srq *srq;
struct ib_cm_id *cm_id;
struct ib_device_attr dev_attr;
int srq_size;
struct srpt_recv_ioctx **ioctx_ring;
struct list_head rch_list;