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Main batch of InfiniBand/RDMA changes for 3.13:

Browse source 
- Re-enable flow steering verbs with new improved userspace ABI
  - Fixes for slow connection due to GID lookup scalability
  - IPoIB fixes
  - Many fixes to HW drivers including mlx4, mlx5, ocrdma and qib
  - Further improvements to SRP error handling
  - Add new transport type for Cisco usNIC
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband/rdma updates from Roland Dreier:
 - Re-enable flow steering verbs with new improved userspace ABI
 - Fixes for slow connection due to GID lookup scalability
 - IPoIB fixes
 - Many fixes to HW drivers including mlx4, mlx5, ocrdma and qib
 - Further improvements to SRP error handling
 - Add new transport type for Cisco usNIC

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (66 commits)
  IB/core: Re-enable create_flow/destroy_flow uverbs
  IB/core: extended command: an improved infrastructure for uverbs commands
  IB/core: Remove ib_uverbs_flow_spec structure from userspace
  IB/core: Use a common header for uverbs flow_specs
  IB/core: Make uverbs flow structure use names like verbs ones
  IB/core: Rename 'flow' structs to match other uverbs structs
  IB/core: clarify overflow/underflow checks on ib_create/destroy_flow
  IB/ucma: Convert use of typedef ctl_table to struct ctl_table
  IB/cm: Convert to using idr_alloc_cyclic()
  IB/mlx5: Fix page shift in create CQ for userspace
  IB/mlx4: Fix device max capabilities check
  IB/mlx5: Fix list_del of empty list
  IB/mlx5: Remove dead code
  IB/core: Encorce MR access rights rules on kernel consumers
  IB/mlx4: Fix endless loop in resize CQ
  RDMA/cma: Remove unused argument and minor dead code
  RDMA/ucma: Discard events for IDs not yet claimed by user space
  IB/core: Add Cisco usNIC rdma node and transport types
  RDMA/nes: Remove self-assignment from nes_query_qp()
  IB/srp: Report receive errors correctly
  ...
This commit is contained in:
Linus Torvalds 2013-11-18 15:36:04 -08:00
commit 1ea406c0e0
52 changed files with 1988 additions and 610 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
Documentation/ABI/stable/sysfs-driver-ib_srp
View file

@ -61,6 +61,12 @@ Description: Interface for making ib_srp connect to a new target.
interrupt is handled by a different CPU then the comp_vector
parameter can be used to spread the SRP completion workload
over multiple CPU's.
* tl_retry_count, a number in the range 2..7 specifying the
IB RC retry count.
* queue_size, the maximum number of commands that the
initiator is allowed to queue per SCSI host. The default
value for this parameter is 62. The lowest supported value
is 2.
What: /sys/class/infiniband_srp/srp-<hca>-<port_number>/ibdev
Date: January 2, 2006
@ -153,6 +159,13 @@ Contact: linux-rdma@vger.kernel.org
Description: InfiniBand service ID used for establishing communication with
the SRP target.
What: /sys/class/scsi_host/host<n>/sgid
Date: February 1, 2014
KernelVersion: 3.13
Contact: linux-rdma@vger.kernel.org
Description: InfiniBand GID of the source port used for communication with
the SRP target.
What: /sys/class/scsi_host/host<n>/zero_req_lim
Date: September 20, 2006
KernelVersion: 2.6.18

39
Documentation/ABI/stable/sysfs-transport-srp
View file

@ -5,6 +5,24 @@ Contact: linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org
Description: Instructs an SRP initiator to disconnect from a target and to
remove all LUNs imported from that target.
What: /sys/class/srp_remote_ports/port-<h>:<n>/dev_loss_tmo
Date: February 1, 2014
KernelVersion: 3.13
Contact: linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org
Description: Number of seconds the SCSI layer will wait after a transport
layer error has been observed before removing a target port.
Zero means immediate removal. Setting this attribute to "off"
will disable the dev_loss timer.
What: /sys/class/srp_remote_ports/port-<h>:<n>/fast_io_fail_tmo
Date: February 1, 2014
KernelVersion: 3.13
Contact: linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org
Description: Number of seconds the SCSI layer will wait after a transport
layer error has been observed before failing I/O. Zero means
failing I/O immediately. Setting this attribute to "off" will
disable the fast_io_fail timer.
What: /sys/class/srp_remote_ports/port-<h>:<n>/port_id
Date: June 27, 2007
KernelVersion: 2.6.24
@ -12,8 +30,29 @@ Contact: linux-scsi@vger.kernel.org
Description: 16-byte local SRP port identifier in hexadecimal format. An
example: 4c:49:4e:55:58:20:56:49:4f:00:00:00:00:00:00:00.
What: /sys/class/srp_remote_ports/port-<h>:<n>/reconnect_delay
Date: February 1, 2014
KernelVersion: 3.13
Contact: linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org
Description: Number of seconds the SCSI layer will wait after a reconnect
attempt failed before retrying. Setting this attribute to
"off" will disable time-based reconnecting.
What: /sys/class/srp_remote_ports/port-<h>:<n>/roles
Date: June 27, 2007
KernelVersion: 2.6.24
Contact: linux-scsi@vger.kernel.org
Description: Role of the remote port. Either "SRP Initiator" or "SRP Target".
What: /sys/class/srp_remote_ports/port-<h>:<n>/state
Date: February 1, 2014
KernelVersion: 3.13
Contact: linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org
Description: State of the transport layer used for communication with the
remote port. "running" if the transport layer is operational;
"blocked" if a transport layer error has been encountered but
the fast_io_fail_tmo timer has not yet fired; "fail-fast"
after the fast_io_fail_tmo timer has fired and before the
"dev_loss_tmo" timer has fired; "lost" after the
"dev_loss_tmo" timer has fired and before the port is finally
removed.

11
drivers/infiniband/Kconfig
View file

@ -31,17 +31,6 @@ config INFINIBAND_USER_ACCESS
libibverbs, libibcm and a hardware driver library from
<http://www.openfabrics.org/git/>.
config INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
bool "Experimental and unstable ABI for userspace access to flow steering verbs"
depends on INFINIBAND_USER_ACCESS
depends on STAGING
---help---
The final ABI for userspace access to flow steering verbs
has not been defined. To use the current ABI, *WHICH WILL
CHANGE IN THE FUTURE*, say Y here.
If unsure, say N.
config INFINIBAND_USER_MEM
bool
depends on INFINIBAND_USER_ACCESS != n

5
drivers/infiniband/core/cm.c
View file

@ -383,14 +383,11 @@ static int cm_alloc_id(struct cm_id_private *cm_id_priv)
{
unsigned long flags;
int id;
static int next_id;
idr_preload(GFP_KERNEL);
spin_lock_irqsave(&cm.lock, flags);
id = idr_alloc(&cm.local_id_table, cm_id_priv, next_id, 0, GFP_NOWAIT);
if (id >= 0)
next_id = max(id + 1, 0);
id = idr_alloc_cyclic(&cm.local_id_table, cm_id_priv, 0, 0, GFP_NOWAIT);
spin_unlock_irqrestore(&cm.lock, flags);
idr_preload_end();

68
drivers/infiniband/core/cma.c
View file

@ -328,28 +328,6 @@ static int cma_set_qkey(struct rdma_id_private *id_priv, u32 qkey)
return ret;
}
static int find_gid_port(struct ib_device *device, union ib_gid *gid, u8 port_num)
{
int i;
int err;
struct ib_port_attr props;
union ib_gid tmp;
err = ib_query_port(device, port_num, &props);
if (err)
return err;
for (i = 0; i < props.gid_tbl_len; ++i) {
err = ib_query_gid(device, port_num, i, &tmp);
if (err)
return err;
if (!memcmp(&tmp, gid, sizeof tmp))
return 0;
}
return -EADDRNOTAVAIL;
}
static void cma_translate_ib(struct sockaddr_ib *sib, struct rdma_dev_addr *dev_addr)
{
dev_addr->dev_type = ARPHRD_INFINIBAND;
@ -371,13 +349,14 @@ static int cma_translate_addr(struct sockaddr *addr, struct rdma_dev_addr *dev_a
return ret;
}
static int cma_acquire_dev(struct rdma_id_private *id_priv)
static int cma_acquire_dev(struct rdma_id_private *id_priv,
struct rdma_id_private *listen_id_priv)
{
struct rdma_dev_addr *dev_addr = &id_priv->id.route.addr.dev_addr;
struct cma_device *cma_dev;
union ib_gid gid, iboe_gid;
int ret = -ENODEV;
u8 port;
u8 port, found_port;
enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ?
IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
@ -389,17 +368,39 @@ static int cma_acquire_dev(struct rdma_id_private *id_priv)
iboe_addr_get_sgid(dev_addr, &iboe_gid);
memcpy(&gid, dev_addr->src_dev_addr +
rdma_addr_gid_offset(dev_addr), sizeof gid);
if (listen_id_priv &&
rdma_port_get_link_layer(listen_id_priv->id.device,
listen_id_priv->id.port_num) == dev_ll) {
cma_dev = listen_id_priv->cma_dev;
port = listen_id_priv->id.port_num;
if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
ret = ib_find_cached_gid(cma_dev->device, &iboe_gid,
&found_port, NULL);
else
ret = ib_find_cached_gid(cma_dev->device, &gid,
&found_port, NULL);
if (!ret && (port == found_port)) {
id_priv->id.port_num = found_port;
goto out;
}
}
list_for_each_entry(cma_dev, &dev_list, list) {
for (port = 1; port <= cma_dev->device->phys_port_cnt; ++port) {
if (listen_id_priv &&
listen_id_priv->cma_dev == cma_dev &&
listen_id_priv->id.port_num == port)
continue;
if (rdma_port_get_link_layer(cma_dev->device, port) == dev_ll) {
if (rdma_node_get_transport(cma_dev->device->node_type) == RDMA_TRANSPORT_IB &&
rdma_port_get_link_layer(cma_dev->device, port) == IB_LINK_LAYER_ETHERNET)
ret = find_gid_port(cma_dev->device, &iboe_gid, port);
ret = ib_find_cached_gid(cma_dev->device, &iboe_gid, &found_port, NULL);
else
ret = find_gid_port(cma_dev->device, &gid, port);
ret = ib_find_cached_gid(cma_dev->device, &gid, &found_port, NULL);
if (!ret) {
id_priv->id.port_num = port;
if (!ret && (port == found_port)) {
id_priv->id.port_num = found_port;
goto out;
}
}
@ -1292,7 +1293,7 @@ static int cma_req_handler(struct ib_cm_id *cm_id, struct ib_cm_event *ib_event)
}
mutex_lock_nested(&conn_id->handler_mutex, SINGLE_DEPTH_NESTING);
ret = cma_acquire_dev(conn_id);
ret = cma_acquire_dev(conn_id, listen_id);
if (ret)
goto err2;
@ -1451,7 +1452,6 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
{
struct rdma_cm_id *new_cm_id;
struct rdma_id_private *listen_id, *conn_id;
struct net_device *dev = NULL;
struct rdma_cm_event event;
int ret;
struct ib_device_attr attr;
@ -1481,7 +1481,7 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
goto out;
}
ret = cma_acquire_dev(conn_id);
ret = cma_acquire_dev(conn_id, listen_id);
if (ret) {
mutex_unlock(&conn_id->handler_mutex);
rdma_destroy_id(new_cm_id);
@ -1529,8 +1529,6 @@ static int iw_conn_req_handler(struct iw_cm_id *cm_id,
cma_deref_id(conn_id);
out:
if (dev)
dev_put(dev);
mutex_unlock(&listen_id->handler_mutex);
return ret;
}
@ -2066,7 +2064,7 @@ static void addr_handler(int status, struct sockaddr *src_addr,
goto out;
if (!status && !id_priv->cma_dev)
status = cma_acquire_dev(id_priv);
status = cma_acquire_dev(id_priv, NULL);
if (status) {
if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_RESOLVED,
@ -2563,7 +2561,7 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
if (ret)
goto err1;
ret = cma_acquire_dev(id_priv);
ret = cma_acquire_dev(id_priv, NULL);
if (ret)
goto err1;
}

2
drivers/infiniband/core/netlink.c
View file

@ -148,7 +148,7 @@ static int ibnl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
list_for_each_entry(client, &client_list, list) {
if (client->index == index) {
if (op < 0 || op >= client->nops ||
!client->cb_table[RDMA_NL_GET_OP(op)].dump)
!client->cb_table[op].dump)
return -EINVAL;
{

1
drivers/infiniband/core/sysfs.c
View file

@ -612,6 +612,7 @@ static ssize_t show_node_type(struct device *device,
switch (dev->node_type) {
case RDMA_NODE_IB_CA: return sprintf(buf, "%d: CA\n", dev->node_type);
case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type);
case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type);
case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type);
case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type);
default: return sprintf(buf, "%d: <unknown>\n", dev->node_type);

4
drivers/infiniband/core/ucma.c
View file

@ -57,7 +57,7 @@ MODULE_LICENSE("Dual BSD/GPL");
static unsigned int max_backlog = 1024;
static struct ctl_table_header *ucma_ctl_table_hdr;
static ctl_table ucma_ctl_table[] = {
static struct ctl_table ucma_ctl_table[] = {
{
.procname = "max_backlog",
.data = &max_backlog,
@ -271,7 +271,7 @@ static int ucma_event_handler(struct rdma_cm_id *cm_id,
goto out;
}
ctx->backlog--;
} else if (!ctx->uid) {
} else if (!ctx->uid || ctx->cm_id != cm_id) {
/*
* We ignore events for new connections until userspace has set
* their context. This can only happen if an error occurs on a

36
drivers/infiniband/core/uverbs.h
View file

@ -47,6 +47,14 @@
#include <rdma/ib_umem.h>
#include <rdma/ib_user_verbs.h>
#define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
do { \
(udata)->inbuf = (void __user *) (ibuf); \
(udata)->outbuf = (void __user *) (obuf); \
(udata)->inlen = (ilen); \
(udata)->outlen = (olen); \
} while (0)
/*
* Our lifetime rules for these structs are the following:
*
@ -178,6 +186,22 @@ void ib_uverbs_event_handler(struct ib_event_handler *handler,
struct ib_event *event);
void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd);
struct ib_uverbs_flow_spec {
union {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
struct ib_uverbs_flow_spec_eth eth;
struct ib_uverbs_flow_spec_ipv4 ipv4;
struct ib_uverbs_flow_spec_tcp_udp tcp_udp;
};
};
#define IB_UVERBS_DECLARE_CMD(name) \
ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \
const char __user *buf, int in_len, \
@ -217,9 +241,13 @@ IB_UVERBS_DECLARE_CMD(destroy_srq);
IB_UVERBS_DECLARE_CMD(create_xsrq);
IB_UVERBS_DECLARE_CMD(open_xrcd);
IB_UVERBS_DECLARE_CMD(close_xrcd);
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
IB_UVERBS_DECLARE_CMD(create_flow);
IB_UVERBS_DECLARE_CMD(destroy_flow);
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
#define IB_UVERBS_DECLARE_EX_CMD(name) \
int ib_uverbs_ex_##name(struct ib_uverbs_file *file, \
struct ib_udata *ucore, \
struct ib_udata *uhw)
IB_UVERBS_DECLARE_EX_CMD(create_flow);
IB_UVERBS_DECLARE_EX_CMD(destroy_flow);
#endif /* UVERBS_H */

109
drivers/infiniband/core/uverbs_cmd.c
View file

@ -54,17 +54,7 @@ static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" };
static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" };
static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" };
static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" };
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" };
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
#define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
do { \
(udata)->inbuf = (void __user *) (ibuf); \
(udata)->outbuf = (void __user *) (obuf); \
(udata)->inlen = (ilen); \
(udata)->outlen = (olen); \
} while (0)
/*
* The ib_uobject locking scheme is as follows:
@ -939,13 +929,9 @@ ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
return -EINVAL;
/*
* Local write permission is required if remote write or
* remote atomic permission is also requested.
*/
if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
!(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
return -EINVAL;
ret = ib_check_mr_access(cmd.access_flags);
if (ret)
return ret;
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
if (!uobj)
@ -2128,6 +2114,9 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
}
next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
if (next->opcode == IB_WR_SEND_WITH_IMM)
next->ex.imm_data =
(__be32 __force) user_wr->ex.imm_data;
} else {
switch (next->opcode) {
case IB_WR_RDMA_WRITE_WITH_IMM:
@ -2601,8 +2590,7 @@ ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
return ret ? ret : in_len;
}
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
static int kern_spec_to_ib_spec(struct ib_kern_spec *kern_spec,
static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
union ib_flow_spec *ib_spec)
{
ib_spec->type = kern_spec->type;
@ -2642,28 +2630,31 @@ static int kern_spec_to_ib_spec(struct ib_kern_spec *kern_spec,
return 0;
}
ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
struct ib_udata *ucore,
struct ib_udata *uhw)
{
struct ib_uverbs_create_flow cmd;
struct ib_uverbs_create_flow_resp resp;
struct ib_uobject *uobj;
struct ib_flow *flow_id;
struct ib_kern_flow_attr *kern_flow_attr;
struct ib_uverbs_flow_attr *kern_flow_attr;
struct ib_flow_attr *flow_attr;
struct ib_qp *qp;
int err = 0;
void *kern_spec;
void *ib_spec;
int i;
int kern_attr_size;
if (out_len < sizeof(resp))
if (ucore->outlen < sizeof(resp))
return -ENOSPC;
if (copy_from_user(&cmd, buf, sizeof(cmd)))
return -EFAULT;
err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
if (err)
return err;
ucore->inbuf += sizeof(cmd);
ucore->inlen -= sizeof(cmd);
if (cmd.comp_mask)
return -EINVAL;
@ -2672,32 +2663,27 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
!capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW))
return -EPERM;
if (cmd.flow_attr.num_of_specs < 0 ||
cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
return -EINVAL;
kern_attr_size = cmd.flow_attr.size - sizeof(cmd) -
sizeof(struct ib_uverbs_cmd_hdr_ex);
if (cmd.flow_attr.size < 0 || cmd.flow_attr.size > in_len ||
kern_attr_size < 0 || kern_attr_size >
(cmd.flow_attr.num_of_specs * sizeof(struct ib_kern_spec)))
if (cmd.flow_attr.size > ucore->inlen ||
cmd.flow_attr.size >
(cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
return -EINVAL;
if (cmd.flow_attr.num_of_specs) {
kern_flow_attr = kmalloc(cmd.flow_attr.size, GFP_KERNEL);
kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
GFP_KERNEL);
if (!kern_flow_attr)
return -ENOMEM;
memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
if (copy_from_user(kern_flow_attr + 1, buf + sizeof(cmd),
kern_attr_size)) {
err = -EFAULT;
err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
cmd.flow_attr.size);
if (err)
goto err_free_attr;
}
} else {
kern_flow_attr = &cmd.flow_attr;
kern_attr_size = sizeof(cmd.flow_attr);
}
uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
@ -2714,7 +2700,7 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
goto err_uobj;
}
flow_attr = kmalloc(cmd.flow_attr.size, GFP_KERNEL);
flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL);
if (!flow_attr) {
err = -ENOMEM;
goto err_put;
@ -2729,19 +2715,22 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
kern_spec = kern_flow_attr + 1;
ib_spec = flow_attr + 1;
for (i = 0; i < flow_attr->num_of_specs && kern_attr_size > 0; i++) {
for (i = 0; i < flow_attr->num_of_specs &&
cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
cmd.flow_attr.size >=
((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
err = kern_spec_to_ib_spec(kern_spec, ib_spec);
if (err)
goto err_free;
flow_attr->size +=
((union ib_flow_spec *) ib_spec)->size;
kern_attr_size -= ((struct ib_kern_spec *) kern_spec)->size;
kern_spec += ((struct ib_kern_spec *) kern_spec)->size;
cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
ib_spec += ((union ib_flow_spec *) ib_spec)->size;
}
if (kern_attr_size) {
pr_warn("create flow failed, %d bytes left from uverb cmd\n",
kern_attr_size);
if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
i, cmd.flow_attr.size);
goto err_free;
}
flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
@ -2760,11 +2749,10 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
memset(&resp, 0, sizeof(resp));
resp.flow_handle = uobj->id;
if (copy_to_user((void __user *)(unsigned long) cmd.response,
&resp, sizeof(resp))) {
err = -EFAULT;
err = ib_copy_to_udata(ucore,
&resp, sizeof(resp));
if (err)
goto err_copy;
}
put_qp_read(qp);
mutex_lock(&file->mutex);
@ -2777,7 +2765,7 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
kfree(flow_attr);
if (cmd.flow_attr.num_of_specs)
kfree(kern_flow_attr);
return in_len;
return 0;
err_copy:
idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
destroy_flow:
@ -2794,16 +2782,18 @@ ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file,
return err;
}
ssize_t ib_uverbs_destroy_flow(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len) {
int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
struct ib_udata *ucore,
struct ib_udata *uhw)
{
struct ib_uverbs_destroy_flow cmd;
struct ib_flow *flow_id;
struct ib_uobject *uobj;
int ret;
if (copy_from_user(&cmd, buf, sizeof(cmd)))
return -EFAULT;
ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
if (ret)
return ret;
uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle,
file->ucontext);
@ -2825,9 +2815,8 @@ ssize_t ib_uverbs_destroy_flow(struct ib_uverbs_file *file,
put_uobj(uobj);
return ret ? ret : in_len;
return ret;
}
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
struct ib_uverbs_create_xsrq *cmd,

134
drivers/infiniband/core/uverbs_main.c
View file

@ -115,10 +115,13 @@ static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file,
[IB_USER_VERBS_CMD_CLOSE_XRCD] = ib_uverbs_close_xrcd,
[IB_USER_VERBS_CMD_CREATE_XSRQ] = ib_uverbs_create_xsrq,
[IB_USER_VERBS_CMD_OPEN_QP] = ib_uverbs_open_qp,
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
[IB_USER_VERBS_CMD_CREATE_FLOW] = ib_uverbs_create_flow,
[IB_USER_VERBS_CMD_DESTROY_FLOW] = ib_uverbs_destroy_flow
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
};
static int (*uverbs_ex_cmd_table[])(struct ib_uverbs_file *file,
struct ib_udata *ucore,
struct ib_udata *uhw) = {
[IB_USER_VERBS_EX_CMD_CREATE_FLOW] = ib_uverbs_ex_create_flow,
[IB_USER_VERBS_EX_CMD_DESTROY_FLOW] = ib_uverbs_ex_destroy_flow
};
static void ib_uverbs_add_one(struct ib_device *device);
@ -589,6 +592,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
{
struct ib_uverbs_file *file = filp->private_data;
struct ib_uverbs_cmd_hdr hdr;
__u32 flags;
if (count < sizeof hdr)
return -EINVAL;
@ -596,45 +600,105 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
if (copy_from_user(&hdr, buf, sizeof hdr))
return -EFAULT;
if (hdr.command >= ARRAY_SIZE(uverbs_cmd_table) ||
!uverbs_cmd_table[hdr.command])
return -EINVAL;
flags = (hdr.command &
IB_USER_VERBS_CMD_FLAGS_MASK) >> IB_USER_VERBS_CMD_FLAGS_SHIFT;
if (!file->ucontext &&
hdr.command != IB_USER_VERBS_CMD_GET_CONTEXT)
return -EINVAL;
if (!flags) {
__u32 command;
if (!(file->device->ib_dev->uverbs_cmd_mask & (1ull << hdr.command)))
return -ENOSYS;
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
if (hdr.command >= IB_USER_VERBS_CMD_THRESHOLD) {
struct ib_uverbs_cmd_hdr_ex hdr_ex;
if (copy_from_user(&hdr_ex, buf, sizeof(hdr_ex)))
return -EFAULT;
if (((hdr_ex.in_words + hdr_ex.provider_in_words) * 4) != count)
if (hdr.command & ~(__u32)(IB_USER_VERBS_CMD_FLAGS_MASK |
IB_USER_VERBS_CMD_COMMAND_MASK))
return -EINVAL;
return uverbs_cmd_table[hdr.command](file,
buf + sizeof(hdr_ex),
(hdr_ex.in_words +
hdr_ex.provider_in_words) * 4,
(hdr_ex.out_words +
hdr_ex.provider_out_words) * 4);
} else {
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
command = hdr.command & IB_USER_VERBS_CMD_COMMAND_MASK;
if (command >= ARRAY_SIZE(uverbs_cmd_table) ||
!uverbs_cmd_table[command])
return -EINVAL;
if (!file->ucontext &&
command != IB_USER_VERBS_CMD_GET_CONTEXT)
return -EINVAL;
if (!(file->device->ib_dev->uverbs_cmd_mask & (1ull << command)))
return -ENOSYS;
if (hdr.in_words * 4 != count)
return -EINVAL;
return uverbs_cmd_table[hdr.command](file,
buf + sizeof(hdr),
hdr.in_words * 4,
hdr.out_words * 4);
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
return uverbs_cmd_table[command](file,
buf + sizeof(hdr),
hdr.in_words * 4,
hdr.out_words * 4);
} else if (flags == IB_USER_VERBS_CMD_FLAG_EXTENDED) {
__u32 command;
struct ib_uverbs_ex_cmd_hdr ex_hdr;
struct ib_udata ucore;
struct ib_udata uhw;
int err;
size_t written_count = count;
if (hdr.command & ~(__u32)(IB_USER_VERBS_CMD_FLAGS_MASK |
IB_USER_VERBS_CMD_COMMAND_MASK))
return -EINVAL;
command = hdr.command & IB_USER_VERBS_CMD_COMMAND_MASK;
if (command >= ARRAY_SIZE(uverbs_ex_cmd_table) ||
!uverbs_ex_cmd_table[command])
return -ENOSYS;
if (!file->ucontext)
return -EINVAL;
if (!(file->device->ib_dev->uverbs_ex_cmd_mask & (1ull << command)))
return -ENOSYS;
if (count < (sizeof(hdr) + sizeof(ex_hdr)))
return -EINVAL;
if (copy_from_user(&ex_hdr, buf + sizeof(hdr), sizeof(ex_hdr)))
return -EFAULT;
count -= sizeof(hdr) + sizeof(ex_hdr);
buf += sizeof(hdr) + sizeof(ex_hdr);
if ((hdr.in_words + ex_hdr.provider_in_words) * 8 != count)
return -EINVAL;
if (ex_hdr.response) {
if (!hdr.out_words && !ex_hdr.provider_out_words)
return -EINVAL;
} else {
if (hdr.out_words || ex_hdr.provider_out_words)
return -EINVAL;
}
INIT_UDATA(&ucore,
(hdr.in_words) ? buf : 0,
(unsigned long)ex_hdr.response,
hdr.in_words * 8,
hdr.out_words * 8);
INIT_UDATA(&uhw,
(ex_hdr.provider_in_words) ? buf + ucore.inlen : 0,
(ex_hdr.provider_out_words) ? (unsigned long)ex_hdr.response + ucore.outlen : 0,
ex_hdr.provider_in_words * 8,
ex_hdr.provider_out_words * 8);
err = uverbs_ex_cmd_table[command](file,
&ucore,
&uhw);
if (err)
return err;
return written_count;
}
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
return -ENOSYS;
}
static int ib_uverbs_mmap(struct file *filp, struct vm_area_struct *vma)

17
drivers/infiniband/core/verbs.c
View file

@ -114,6 +114,8 @@ rdma_node_get_transport(enum rdma_node_type node_type)
return RDMA_TRANSPORT_IB;
case RDMA_NODE_RNIC:
return RDMA_TRANSPORT_IWARP;
case RDMA_NODE_USNIC:
return RDMA_TRANSPORT_USNIC;
default:
BUG();
return 0;
@ -130,6 +132,7 @@ enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_
case RDMA_TRANSPORT_IB:
return IB_LINK_LAYER_INFINIBAND;
case RDMA_TRANSPORT_IWARP:
case RDMA_TRANSPORT_USNIC:
return IB_LINK_LAYER_ETHERNET;
default:
return IB_LINK_LAYER_UNSPECIFIED;
@ -958,6 +961,11 @@ EXPORT_SYMBOL(ib_resize_cq);
struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
{
struct ib_mr *mr;
int err;
err = ib_check_mr_access(mr_access_flags);
if (err)
return ERR_PTR(err);
mr = pd->device->get_dma_mr(pd, mr_access_flags);
@ -980,6 +988,11 @@ struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
u64 *iova_start)
{
struct ib_mr *mr;
int err;
err = ib_check_mr_access(mr_access_flags);
if (err)
return ERR_PTR(err);
if (!pd->device->reg_phys_mr)
return ERR_PTR(-ENOSYS);
@ -1010,6 +1023,10 @@ int ib_rereg_phys_mr(struct ib_mr *mr,
struct ib_pd *old_pd;
int ret;
ret = ib_check_mr_access(mr_access_flags);
if (ret)
return ret;
if (!mr->device->rereg_phys_mr)
return -ENOSYS;

4
drivers/infiniband/hw/cxgb4/device.c
View file

@ -602,10 +602,10 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
rdev->lldi.vr->qp.size,
rdev->lldi.vr->cq.start,
rdev->lldi.vr->cq.size);
PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p qpshift %lu "
PDBG("udb len 0x%x udb base %llx db_reg %p gts_reg %p qpshift %lu "
"qpmask 0x%x cqshift %lu cqmask 0x%x\n",
(unsigned)pci_resource_len(rdev->lldi.pdev, 2),
(void *)(unsigned long)pci_resource_start(rdev->lldi.pdev, 2),
(u64)pci_resource_start(rdev->lldi.pdev, 2),
rdev->lldi.db_reg,
rdev->lldi.gts_reg,
rdev->qpshift, rdev->qpmask,

7
drivers/infiniband/hw/ipath/ipath_user_sdma.c
View file

@ -280,9 +280,7 @@ static int ipath_user_sdma_pin_pages(const struct ipath_devdata *dd,
int j;
int ret;
ret = get_user_pages(current, current->mm, addr,
npages, 0, 1, pages, NULL);
ret = get_user_pages_fast(addr, npages, 0, pages);
if (ret != npages) {
int i;
@ -811,10 +809,7 @@ int ipath_user_sdma_writev(struct ipath_devdata *dd,
while (dim) {
const int mxp = 8;
down_write(&current->mm->mmap_sem);
ret = ipath_user_sdma_queue_pkts(dd, pq, &list, iov, dim, mxp);
up_write(&current->mm->mmap_sem);
if (ret <= 0)
goto done_unlock;
else {

9
drivers/infiniband/hw/mlx4/cq.c
View file

@ -324,7 +324,7 @@ static int mlx4_ib_get_outstanding_cqes(struct mlx4_ib_cq *cq)
u32 i;
i = cq->mcq.cons_index;
while (get_sw_cqe(cq, i & cq->ibcq.cqe))
while (get_sw_cqe(cq, i))
++i;
return i - cq->mcq.cons_index;
@ -365,7 +365,7 @@ int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
mutex_lock(&cq->resize_mutex);
if (entries < 1 || entries > dev->dev->caps.max_cqes) {
if (entries < 1) {
err = -EINVAL;
goto out;
}
@ -376,6 +376,11 @@ int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
goto out;
}
if (entries > dev->dev->caps.max_cqes) {
err = -EINVAL;
goto out;
}
if (ibcq->uobject) {
err = mlx4_alloc_resize_umem(dev, cq, entries, udata);
if (err)

8
drivers/infiniband/hw/mlx4/main.c
View file

@ -1685,11 +1685,9 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.create_flow = mlx4_ib_create_flow;
ibdev->ib_dev.destroy_flow = mlx4_ib_destroy_flow;
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
ibdev->ib_dev.uverbs_cmd_mask |=
(1ull << IB_USER_VERBS_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_CMD_DESTROY_FLOW);
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
ibdev->ib_dev.uverbs_ex_cmd_mask |=
(1ull << IB_USER_VERBS_EX_CMD_CREATE_FLOW) |
(1ull << IB_USER_VERBS_EX_CMD_DESTROY_FLOW);
}
mlx4_ib_alloc_eqs(dev, ibdev);

25
drivers/infiniband/hw/mlx5/cq.c
View file

@ -556,7 +556,7 @@ static int create_cq_user(struct mlx5_ib_dev *dev, struct ib_udata *udata,
goto err_db;
}
mlx5_ib_populate_pas(dev, cq->buf.umem, page_shift, (*cqb)->pas, 0);
(*cqb)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
(*cqb)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
*index = to_mucontext(context)->uuari.uars[0].index;
@ -620,7 +620,7 @@ static int create_cq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
}
mlx5_fill_page_array(&cq->buf.buf, (*cqb)->pas);
(*cqb)->ctx.log_pg_sz = cq->buf.buf.page_shift - PAGE_SHIFT;
(*cqb)->ctx.log_pg_sz = cq->buf.buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT;
*index = dev->mdev.priv.uuari.uars[0].index;
return 0;
@ -653,8 +653,11 @@ struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev, int entries,
int eqn;
int err;
if (entries < 0)
return ERR_PTR(-EINVAL);
entries = roundup_pow_of_two(entries + 1);
if (entries < 1 || entries > dev->mdev.caps.max_cqes)
if (entries > dev->mdev.caps.max_cqes)
return ERR_PTR(-EINVAL);
cq = kzalloc(sizeof(*cq), GFP_KERNEL);
@ -747,17 +750,9 @@ int mlx5_ib_destroy_cq(struct ib_cq *cq)
return 0;
}
static int is_equal_rsn(struct mlx5_cqe64 *cqe64, struct mlx5_ib_srq *srq,
u32 rsn)
static int is_equal_rsn(struct mlx5_cqe64 *cqe64, u32 rsn)
{
u32 lrsn;
if (srq)
lrsn = be32_to_cpu(cqe64->srqn) & 0xffffff;
else
lrsn = be32_to_cpu(cqe64->sop_drop_qpn) & 0xffffff;
return rsn == lrsn;
return rsn == (ntohl(cqe64->sop_drop_qpn) & 0xffffff);
}
void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq)
@ -787,8 +782,8 @@ void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 rsn, struct mlx5_ib_srq *srq)
while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) {
cqe = get_cqe(cq, prod_index & cq->ibcq.cqe);
cqe64 = (cq->mcq.cqe_sz == 64) ? cqe : cqe + 64;
if (is_equal_rsn(cqe64, srq, rsn)) {
if (srq)
if (is_equal_rsn(cqe64, rsn)) {
if (srq && (ntohl(cqe64->srqn) & 0xffffff))
mlx5_ib_free_srq_wqe(srq, be16_to_cpu(cqe64->wqe_counter));
++nfreed;
} else if (nfreed) {

3
drivers/infiniband/hw/mlx5/main.c
View file

@ -745,7 +745,8 @@ static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
seg->start_addr = 0;
err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in));
err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in),
NULL, NULL, NULL);
if (err) {
mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
goto err_in;

6
drivers/infiniband/hw/mlx5/mlx5_ib.h
View file

@ -262,6 +262,9 @@ struct mlx5_ib_mr {
int npages;
struct completion done;
enum ib_wc_status status;
struct mlx5_ib_dev *dev;
struct mlx5_create_mkey_mbox_out out;
unsigned long start;
};
struct mlx5_ib_fast_reg_page_list {
@ -323,6 +326,7 @@ struct mlx5_cache_ent {
struct mlx5_ib_dev *dev;
struct work_struct work;
struct delayed_work dwork;
int pending;
};
struct mlx5_mr_cache {
@ -358,6 +362,8 @@ struct mlx5_ib_dev {
spinlock_t mr_lock;
struct mlx5_ib_resources devr;
struct mlx5_mr_cache cache;
struct timer_list delay_timer;
int fill_delay;
};
static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)

167
drivers/infiniband/hw/mlx5/mr.c
View file

@ -35,11 +35,12 @@
#include <linux/random.h>
#include <linux/debugfs.h>
#include <linux/export.h>
#include <linux/delay.h>
#include <rdma/ib_umem.h>
#include "mlx5_ib.h"
enum {
DEF_CACHE_SIZE = 10,
MAX_PENDING_REG_MR = 8,
};
enum {
@ -63,6 +64,51 @@ static int order2idx(struct mlx5_ib_dev *dev, int order)
return order - cache->ent[0].order;
}
static void reg_mr_callback(int status, void *context)
{
struct mlx5_ib_mr *mr = context;
struct mlx5_ib_dev *dev = mr->dev;
struct mlx5_mr_cache *cache = &dev->cache;
int c = order2idx(dev, mr->order);
struct mlx5_cache_ent *ent = &cache->ent[c];
u8 key;
unsigned long flags;
spin_lock_irqsave(&ent->lock, flags);
ent->pending--;
spin_unlock_irqrestore(&ent->lock, flags);
if (status) {
mlx5_ib_warn(dev, "async reg mr failed. status %d\n", status);
kfree(mr);
dev->fill_delay = 1;
mod_timer(&dev->delay_timer, jiffies + HZ);
return;
}
if (mr->out.hdr.status) {
mlx5_ib_warn(dev, "failed - status %d, syndorme 0x%x\n",
mr->out.hdr.status,
be32_to_cpu(mr->out.hdr.syndrome));
kfree(mr);
dev->fill_delay = 1;
mod_timer(&dev->delay_timer, jiffies + HZ);
return;
}
spin_lock_irqsave(&dev->mdev.priv.mkey_lock, flags);
key = dev->mdev.priv.mkey_key++;
spin_unlock_irqrestore(&dev->mdev.priv.mkey_lock, flags);
mr->mmr.key = mlx5_idx_to_mkey(be32_to_cpu(mr->out.mkey) & 0xffffff) | key;
cache->last_add = jiffies;
spin_lock_irqsave(&ent->lock, flags);
list_add_tail(&mr->list, &ent->head);
ent->cur++;
ent->size++;
spin_unlock_irqrestore(&ent->lock, flags);
}
static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
{
struct mlx5_mr_cache *cache = &dev->cache;
@ -78,36 +124,39 @@ static int add_keys(struct mlx5_ib_dev *dev, int c, int num)
return -ENOMEM;
for (i = 0; i < num; i++) {
if (ent->pending >= MAX_PENDING_REG_MR) {
err = -EAGAIN;
break;
}
mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr) {
err = -ENOMEM;
goto out;
break;
}
mr->order = ent->order;
mr->umred = 1;
mr->dev = dev;
in->seg.status = 1 << 6;
in->seg.xlt_oct_size = cpu_to_be32((npages + 1) / 2);
in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
in->seg.flags = MLX5_ACCESS_MODE_MTT | MLX5_PERM_UMR_EN;
in->seg.log2_page_size = 12;
spin_lock_irq(&ent->lock);
ent->pending++;
spin_unlock_irq(&ent->lock);
mr->start = jiffies;
err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in,
sizeof(*in));
sizeof(*in), reg_mr_callback,
mr, &mr->out);
if (err) {
mlx5_ib_warn(dev, "create mkey failed %d\n", err);
kfree(mr);
goto out;
break;
}
cache->last_add = jiffies;
spin_lock(&ent->lock);
list_add_tail(&mr->list, &ent->head);
ent->cur++;
ent->size++;
spin_unlock(&ent->lock);
}
out:
kfree(in);
return err;
}
@ -121,16 +170,16 @@ static void remove_keys(struct mlx5_ib_dev *dev, int c, int num)
int i;
for (i = 0; i < num; i++) {
spin_lock(&ent->lock);
spin_lock_irq(&ent->lock);
if (list_empty(&ent->head)) {
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
return;
}
mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
list_del(&mr->list);
ent->cur--;
ent->size--;
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
if (err)
mlx5_ib_warn(dev, "failed destroy mkey\n");
@ -162,9 +211,13 @@ static ssize_t size_write(struct file *filp, const char __user *buf,
return -EINVAL;
if (var > ent->size) {
err = add_keys(dev, c, var - ent->size);
if (err)
return err;
do {
err = add_keys(dev, c, var - ent->size);
if (err && err != -EAGAIN)
return err;
usleep_range(3000, 5000);
} while (err);
} else if (var < ent->size) {
remove_keys(dev, c, ent->size - var);
}
@ -280,23 +333,37 @@ static void __cache_work_func(struct mlx5_cache_ent *ent)
struct mlx5_ib_dev *dev = ent->dev;
struct mlx5_mr_cache *cache = &dev->cache;
int i = order2idx(dev, ent->order);
int err;
if (cache->stopped)
return;
ent = &dev->cache.ent[i];
if (ent->cur < 2 * ent->limit) {
add_keys(dev, i, 1);
if (ent->cur < 2 * ent->limit)
queue_work(cache->wq, &ent->work);
if (ent->cur < 2 * ent->limit && !dev->fill_delay) {
err = add_keys(dev, i, 1);
if (ent->cur < 2 * ent->limit) {
if (err == -EAGAIN) {
mlx5_ib_dbg(dev, "returned eagain, order %d\n",
i + 2);
queue_delayed_work(cache->wq, &ent->dwork,
msecs_to_jiffies(3));
} else if (err) {
mlx5_ib_warn(dev, "command failed order %d, err %d\n",
i + 2, err);
queue_delayed_work(cache->wq, &ent->dwork,
msecs_to_jiffies(1000));
} else {
queue_work(cache->wq, &ent->work);
}
}
} else if (ent->cur > 2 * ent->limit) {
if (!someone_adding(cache) &&
time_after(jiffies, cache->last_add + 60 * HZ)) {
time_after(jiffies, cache->last_add + 300 * HZ)) {
remove_keys(dev, i, 1);
if (ent->cur > ent->limit)
queue_work(cache->wq, &ent->work);
} else {
queue_delayed_work(cache->wq, &ent->dwork, 60 * HZ);
queue_delayed_work(cache->wq, &ent->dwork, 300 * HZ);
}
}
}
@ -336,18 +403,18 @@ static struct mlx5_ib_mr *alloc_cached_mr(struct mlx5_ib_dev *dev, int order)
mlx5_ib_dbg(dev, "order %d, cache index %d\n", ent->order, i);
spin_lock(&ent->lock);
spin_lock_irq(&ent->lock);
if (!list_empty(&ent->head)) {
mr = list_first_entry(&ent->head, struct mlx5_ib_mr,
list);
list_del(&mr->list);
ent->cur--;
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
if (ent->cur < ent->limit)
queue_work(cache->wq, &ent->work);
break;
}
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
queue_work(cache->wq, &ent->work);
@ -374,12 +441,12 @@ static void free_cached_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
return;
}
ent = &cache->ent[c];
spin_lock(&ent->lock);
spin_lock_irq(&ent->lock);
list_add_tail(&mr->list, &ent->head);
ent->cur++;
if (ent->cur > 2 * ent->limit)
shrink = 1;
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
if (shrink)
queue_work(cache->wq, &ent->work);
@ -394,16 +461,16 @@ static void clean_keys(struct mlx5_ib_dev *dev, int c)
cancel_delayed_work(&ent->dwork);
while (1) {
spin_lock(&ent->lock);
spin_lock_irq(&ent->lock);
if (list_empty(&ent->head)) {
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
return;
}
mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list);
list_del(&mr->list);
ent->cur--;
ent->size--;
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
err = mlx5_core_destroy_mkey(&dev->mdev, &mr->mmr);
if (err)
mlx5_ib_warn(dev, "failed destroy mkey\n");
@ -464,12 +531,18 @@ static void mlx5_mr_cache_debugfs_cleanup(struct mlx5_ib_dev *dev)
debugfs_remove_recursive(dev->cache.root);
}
static void delay_time_func(unsigned long ctx)
{
struct mlx5_ib_dev *dev = (struct mlx5_ib_dev *)ctx;
dev->fill_delay = 0;
}
int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
{
struct mlx5_mr_cache *cache = &dev->cache;
struct mlx5_cache_ent *ent;
int limit;
int size;
int err;
int i;
@ -479,6 +552,7 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
return -ENOMEM;
}
setup_timer(&dev->delay_timer, delay_time_func, (unsigned long)dev);
for (i = 0; i < MAX_MR_CACHE_ENTRIES; i++) {
INIT_LIST_HEAD(&cache->ent[i].head);
spin_lock_init(&cache->ent[i].lock);
@ -489,13 +563,11 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev)
ent->order = i + 2;
ent->dev = dev;
if (dev->mdev.profile->mask & MLX5_PROF_MASK_MR_CACHE) {
size = dev->mdev.profile->mr_cache[i].size;
if (dev->mdev.profile->mask & MLX5_PROF_MASK_MR_CACHE)
limit = dev->mdev.profile->mr_cache[i].limit;
} else {
size = DEF_CACHE_SIZE;
else
limit = 0;
}
INIT_WORK(&ent->work, cache_work_func);
INIT_DELAYED_WORK(&ent->dwork, delayed_cache_work_func);
ent->limit = limit;
@ -522,6 +594,7 @@ int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev)
clean_keys(dev, i);
destroy_workqueue(dev->cache.wq);
del_timer_sync(&dev->delay_timer);
return 0;
}
@ -551,7 +624,8 @@ struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc)
seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
seg->start_addr = 0;
err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in));
err = mlx5_core_create_mkey(mdev, &mr->mmr, in, sizeof(*in), NULL, NULL,
NULL);
if (err)
goto err_in;
@ -660,14 +734,14 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem,
int err;
int i;
for (i = 0; i < 10; i++) {
for (i = 0; i < 1; i++) {
mr = alloc_cached_mr(dev, order);
if (mr)
break;
err = add_keys(dev, order2idx(dev, order), 1);
if (err) {
mlx5_ib_warn(dev, "add_keys failed\n");
if (err && err != -EAGAIN) {
mlx5_ib_warn(dev, "add_keys failed, err %d\n", err);
break;
}
}
@ -759,8 +833,10 @@ static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr,
in->seg.xlt_oct_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
in->seg.log2_page_size = page_shift;
in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length, 1 << page_shift));
err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, inlen);
in->xlat_oct_act_size = cpu_to_be32(get_octo_len(virt_addr, length,
1 << page_shift));
err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, inlen, NULL,
NULL, NULL);
if (err) {
mlx5_ib_warn(dev, "create mkey failed\n");
goto err_2;
@ -944,7 +1020,8 @@ struct ib_mr *mlx5_ib_alloc_fast_reg_mr(struct ib_pd *pd,
* TBD not needed - issue 197292 */
in->seg.log2_page_size = PAGE_SHIFT;
err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in));
err = mlx5_core_create_mkey(&dev->mdev, &mr->mmr, in, sizeof(*in), NULL,
NULL, NULL);
kfree(in);
if (err)
goto err_free;

21
drivers/infiniband/hw/mlx5/qp.c
View file

@ -551,7 +551,7 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
}
mlx5_ib_populate_pas(dev, qp->umem, page_shift, (*in)->pas, 0);
(*in)->ctx.log_pg_sz_remote_qpn =
cpu_to_be32((page_shift - PAGE_SHIFT) << 24);
cpu_to_be32((page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
(*in)->ctx.params2 = cpu_to_be32(offset << 6);
(*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
@ -648,7 +648,8 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
goto err_buf;
}
(*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
(*in)->ctx.log_pg_sz_remote_qpn = cpu_to_be32((qp->buf.page_shift - PAGE_SHIFT) << 24);
(*in)->ctx.log_pg_sz_remote_qpn =
cpu_to_be32((qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
/* Set "fast registration enabled" for all kernel QPs */
(*in)->ctx.params1 |= cpu_to_be32(1 << 11);
(*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4);
@ -1317,9 +1318,11 @@ static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_Q
MLX5_QP_OPTPAR_RAE |
MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_RNR_TIMEOUT |
MLX5_QP_OPTPAR_PM_STATE,
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_ALT_ADDR_PATH,
[MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE |
MLX5_QP_OPTPAR_PM_STATE,
MLX5_QP_OPTPAR_PM_STATE |
MLX5_QP_OPTPAR_ALT_ADDR_PATH,
[MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY |
MLX5_QP_OPTPAR_SRQN |
MLX5_QP_OPTPAR_CQN_RCV,
@ -1550,7 +1553,7 @@ static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
mlx5_cur = to_mlx5_state(cur_state);
mlx5_new = to_mlx5_state(new_state);
mlx5_st = to_mlx5_st(ibqp->qp_type);
if (mlx5_cur < 0 || mlx5_new < 0 || mlx5_st < 0)
if (mlx5_st < 0)
goto out;
optpar = ib_mask_to_mlx5_opt(attr_mask);
@ -1744,6 +1747,7 @@ static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
MLX5_MKEY_MASK_PD |
MLX5_MKEY_MASK_LR |
MLX5_MKEY_MASK_LW |
MLX5_MKEY_MASK_KEY |
MLX5_MKEY_MASK_RR |
MLX5_MKEY_MASK_RW |
MLX5_MKEY_MASK_A |
@ -1800,7 +1804,8 @@ static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *w
seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start);
seg->len = cpu_to_be64(wr->wr.fast_reg.length);
seg->log2_page_size = wr->wr.fast_reg.page_shift;
seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
mlx5_mkey_variant(wr->wr.fast_reg.rkey));
}
static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg,
@ -1913,6 +1918,10 @@ static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size,
if (unlikely((*seg == qp->sq.qend)))
*seg = mlx5_get_send_wqe(qp, 0);
if (!li) {
if (unlikely(wr->wr.fast_reg.page_list_len >
wr->wr.fast_reg.page_list->max_page_list_len))
return -ENOMEM;
set_frwr_pages(*seg, wr, mdev, pd, writ);
*seg += sizeof(struct mlx5_wqe_data_seg);
*size += (sizeof(struct mlx5_wqe_data_seg) / 16);

8
drivers/infiniband/hw/mlx5/srq.c
View file

@ -123,7 +123,7 @@ static int create_srq_user(struct ib_pd *pd, struct mlx5_ib_srq *srq,
goto err_in;
}
(*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
(*in)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
(*in)->ctx.pgoff_cqn = cpu_to_be32(offset << 26);
return 0;
@ -192,7 +192,7 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
}
srq->wq_sig = !!srq_signature;
(*in)->ctx.log_pg_sz = page_shift - PAGE_SHIFT;
(*in)->ctx.log_pg_sz = page_shift - MLX5_ADAPTER_PAGE_SHIFT;
return 0;
@ -390,9 +390,7 @@ int mlx5_ib_destroy_srq(struct ib_srq *srq)
mlx5_ib_db_unmap_user(to_mucontext(srq->uobject->context), &msrq->db);
ib_umem_release(msrq->umem);
} else {
kfree(msrq->wrid);
mlx5_buf_free(&dev->mdev, &msrq->buf);
mlx5_db_free(&dev->mdev, &msrq->db);
destroy_srq_kernel(dev, msrq);
}
kfree(srq);

2
drivers/infiniband/hw/nes/nes_verbs.c
View file

@ -2834,7 +2834,7 @@ static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
init_attr->qp_context = nesqp->ibqp.qp_context;
init_attr->send_cq = nesqp->ibqp.send_cq;
init_attr->recv_cq = nesqp->ibqp.recv_cq;
init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
init_attr->srq = nesqp->ibqp.srq;
init_attr->cap = attr->cap;
return 0;

53
drivers/infiniband/hw/ocrdma/ocrdma.h
View file

@ -122,6 +122,32 @@ struct mqe_ctx {
bool cmd_done;
};
struct ocrdma_hw_mr {
u32 lkey;
u8 fr_mr;
u8 remote_atomic;
u8 remote_rd;
u8 remote_wr;
u8 local_rd;
u8 local_wr;
u8 mw_bind;
u8 rsvd;
u64 len;
struct ocrdma_pbl *pbl_table;
u32 num_pbls;
u32 num_pbes;
u32 pbl_size;
u32 pbe_size;
u64 fbo;
u64 va;
};
struct ocrdma_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct ocrdma_hw_mr hwmr;
};
struct ocrdma_dev {
struct ib_device ibdev;
struct ocrdma_dev_attr attr;
@ -169,7 +195,7 @@ struct ocrdma_dev {
struct list_head entry;
struct rcu_head rcu;
int id;
u64 stag_arr[OCRDMA_MAX_STAG];
struct ocrdma_mr *stag_arr[OCRDMA_MAX_STAG];
u16 pvid;
};
@ -294,31 +320,6 @@ struct ocrdma_qp {
u16 db_cache;
};
struct ocrdma_hw_mr {
u32 lkey;
u8 fr_mr;
u8 remote_atomic;
u8 remote_rd;
u8 remote_wr;
u8 local_rd;
u8 local_wr;
u8 mw_bind;
u8 rsvd;
u64 len;
struct ocrdma_pbl *pbl_table;
u32 num_pbls;
u32 num_pbes;
u32 pbl_size;
u32 pbe_size;
u64 fbo;
u64 va;
};
struct ocrdma_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct ocrdma_hw_mr hwmr;
};
struct ocrdma_ucontext {
struct ib_ucontext ibucontext;

2
drivers/infiniband/hw/ocrdma/ocrdma_hw.c
View file

@ -1783,7 +1783,7 @@ static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
u32 max_sges = attrs->cap.max_send_sge;
/* QP1 may exceed 127 */
max_wqe_allocated = min_t(int, attrs->cap.max_send_wr + 1,
max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
dev->attr.max_wqe);
status = ocrdma_build_q_conf(&max_wqe_allocated,

7
drivers/infiniband/hw/ocrdma/ocrdma_main.c
View file

@ -452,9 +452,6 @@ static void ocrdma_remove_free(struct rcu_head *rcu)
{
struct ocrdma_dev *dev = container_of(rcu, struct ocrdma_dev, rcu);
ocrdma_free_resources(dev);
ocrdma_cleanup_hw(dev);
idr_remove(&ocrdma_dev_id, dev->id);
kfree(dev->mbx_cmd);
ib_dealloc_device(&dev->ibdev);
@ -470,6 +467,10 @@ static void ocrdma_remove(struct ocrdma_dev *dev)
spin_lock(&ocrdma_devlist_lock);
list_del_rcu(&dev->entry);
spin_unlock(&ocrdma_devlist_lock);
ocrdma_free_resources(dev);
ocrdma_cleanup_hw(dev);
call_rcu(&dev->rcu, ocrdma_remove_free);
}

6
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
View file

@ -1981,9 +1981,7 @@ static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES);
if ((wr->wr.fast_reg.page_list_len >
qp->dev->attr.max_pages_per_frmr) ||
(wr->wr.fast_reg.length > 0xffffffffULL))
if (wr->wr.fast_reg.page_list_len > qp->dev->attr.max_pages_per_frmr)
return -EINVAL;
hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT);
@ -2839,7 +2837,7 @@ struct ib_mr *ocrdma_alloc_frmr(struct ib_pd *ibpd, int max_page_list_len)
goto mbx_err;
mr->ibmr.rkey = mr->hwmr.lkey;
mr->ibmr.lkey = mr->hwmr.lkey;
dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] = (unsigned long) mr;
dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] = mr;
return &mr->ibmr;
mbx_err:
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);

11
drivers/infiniband/hw/qib/qib_iba7322.c
View file

@ -6190,21 +6190,20 @@ static int setup_txselect(const char *str, struct kernel_param *kp)
{
struct qib_devdata *dd;
unsigned long val;
int ret;
char *n;
if (strlen(str) >= MAX_ATTEN_LEN) {
pr_info("txselect_values string too long\n");
return -ENOSPC;
}
ret = kstrtoul(str, 0, &val);
if (ret || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
val = simple_strtoul(str, &n, 0);
if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
TXDDS_MFG_SZ)) {
pr_info("txselect_values must start with a number < %d\n",
TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ + TXDDS_MFG_SZ);
return ret ? ret : -EINVAL;
return -EINVAL;
}
strcpy(txselect_list, str);
list_for_each_entry(dd, &qib_dev_list, list)
if (dd->deviceid == PCI_DEVICE_ID_QLOGIC_IB_7322)
set_no_qsfp_atten(dd, 1);

14
drivers/infiniband/hw/qib/qib_mad.h
View file

@ -54,7 +54,7 @@ struct ib_node_info {
__be32 revision;
u8 local_port_num;
u8 vendor_id[3];
} __attribute__ ((packed));
} __packed;
struct ib_mad_notice_attr {
u8 generic_type;
@ -73,7 +73,7 @@ struct ib_mad_notice_attr {
__be16 reserved;
__be16 lid; /* where violation happened */
u8 port_num; /* where violation happened */
} __attribute__ ((packed)) ntc_129_131;
} __packed ntc_129_131;
struct {
__be16 reserved;
@ -83,14 +83,14 @@ struct ib_mad_notice_attr {
__be32 new_cap_mask; /* new capability mask */
u8 reserved3;
u8 change_flags; /* low 3 bits only */
} __attribute__ ((packed)) ntc_144;
} __packed ntc_144;
struct {
__be16 reserved;
__be16 lid; /* lid where sys guid changed */
__be16 reserved2;
__be64 new_sys_guid;
} __attribute__ ((packed)) ntc_145;
} __packed ntc_145;
struct {
__be16 reserved;
@ -104,7 +104,7 @@ struct ib_mad_notice_attr {
u8 reserved3;
u8 dr_trunc_hop;
u8 dr_rtn_path[30];
} __attribute__ ((packed)) ntc_256;
} __packed ntc_256;
struct {
__be16 reserved;
@ -115,7 +115,7 @@ struct ib_mad_notice_attr {
__be32 qp2; /* high 8 bits reserved */
union ib_gid gid1;
union ib_gid gid2;
} __attribute__ ((packed)) ntc_257_258;
} __packed ntc_257_258;
} details;
};
@ -209,7 +209,7 @@ struct ib_pma_portcounters_cong {
__be64 port_rcv_packets;
__be64 port_xmit_wait;
__be64 port_adr_events;
} __attribute__ ((packed));
} __packed;
#define IB_PMA_CONG_HW_CONTROL_TIMER 0x00
#define IB_PMA_CONG_HW_CONTROL_SAMPLE 0x01

6
drivers/infiniband/hw/qib/qib_user_sdma.c
View file

@ -594,8 +594,7 @@ static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
else
j = npages;
ret = get_user_pages(current, current->mm, addr,
j, 0, 1, pages, NULL);
ret = get_user_pages_fast(addr, j, 0, pages);
if (ret != j) {
i = 0;
j = ret;
@ -1294,11 +1293,8 @@ int qib_user_sdma_writev(struct qib_ctxtdata *rcd,
int mxp = 8;
int ndesc = 0;
down_write(&current->mm->mmap_sem);
ret = qib_user_sdma_queue_pkts(dd, ppd, pq,
iov, dim, &list, &mxp, &ndesc);
up_write(&current->mm->mmap_sem);
if (ret < 0)
goto done_unlock;
else {

10
drivers/infiniband/hw/qib/qib_verbs.h
View file

@ -150,14 +150,14 @@ struct ib_reth {
__be64 vaddr;
__be32 rkey;
__be32 length;
} __attribute__ ((packed));
} __packed;
struct ib_atomic_eth {
__be32 vaddr[2]; /* unaligned so access as 2 32-bit words */
__be32 rkey;
__be64 swap_data;
__be64 compare_data;
} __attribute__ ((packed));
} __packed;
struct qib_other_headers {
__be32 bth[3];
@ -178,7 +178,7 @@ struct qib_other_headers {
__be32 aeth;
struct ib_atomic_eth atomic_eth;
} u;
} __attribute__ ((packed));
} __packed;
/*
* Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
@ -195,12 +195,12 @@ struct qib_ib_header {
} l;
struct qib_other_headers oth;
} u;
} __attribute__ ((packed));
} __packed;
struct qib_pio_header {
__le32 pbc[2];
struct qib_ib_header hdr;
} __attribute__ ((packed));
} __packed;
/*
* There is one struct qib_mcast for each multicast GID.

4
drivers/infiniband/ulp/ipoib/ipoib.h
View file

@ -101,6 +101,7 @@ enum {
IPOIB_MCAST_FLAG_SENDONLY = 1,
IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
IPOIB_MCAST_FLAG_ATTACHED = 3,
IPOIB_MCAST_JOIN_STARTED = 4,
MAX_SEND_CQE = 16,
IPOIB_CM_COPYBREAK = 256,
@ -151,6 +152,7 @@ struct ipoib_mcast {
struct sk_buff_head pkt_queue;
struct net_device *dev;
struct completion done;
};
struct ipoib_rx_buf {
@ -299,7 +301,7 @@ struct ipoib_dev_priv {
unsigned long flags;
struct mutex vlan_mutex;
struct rw_semaphore vlan_rwsem;
struct rb_root path_tree;
struct list_head path_list;

14
drivers/infiniband/ulp/ipoib/ipoib_cm.c
View file

@ -140,7 +140,8 @@ static int ipoib_cm_post_receive_nonsrq(struct net_device *dev,
static struct sk_buff *ipoib_cm_alloc_rx_skb(struct net_device *dev,
struct ipoib_cm_rx_buf *rx_ring,
int id, int frags,
u64 mapping[IPOIB_CM_RX_SG])
u64 mapping[IPOIB_CM_RX_SG],
gfp_t gfp)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct sk_buff *skb;
@ -164,7 +165,7 @@ static struct sk_buff *ipoib_cm_alloc_rx_skb(struct net_device *dev,
}
for (i = 0; i < frags; i++) {
struct page *page = alloc_page(GFP_ATOMIC);
struct page *page = alloc_page(gfp);
if (!page)
goto partial_error;
@ -382,7 +383,8 @@ static int ipoib_cm_nonsrq_init_rx(struct net_device *dev, struct ib_cm_id *cm_i
for (i = 0; i < ipoib_recvq_size; ++i) {
if (!ipoib_cm_alloc_rx_skb(dev, rx->rx_ring, i, IPOIB_CM_RX_SG - 1,
rx->rx_ring[i].mapping)) {
rx->rx_ring[i].mapping,
GFP_KERNEL)) {
ipoib_warn(priv, "failed to allocate receive buffer %d\n", i);
ret = -ENOMEM;
goto err_count;
@ -639,7 +641,8 @@ void ipoib_cm_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
frags = PAGE_ALIGN(wc->byte_len - min(wc->byte_len,
(unsigned)IPOIB_CM_HEAD_SIZE)) / PAGE_SIZE;
newskb = ipoib_cm_alloc_rx_skb(dev, rx_ring, wr_id, frags, mapping);
newskb = ipoib_cm_alloc_rx_skb(dev, rx_ring, wr_id, frags,
mapping, GFP_ATOMIC);
if (unlikely(!newskb)) {
/*
* If we can't allocate a new RX buffer, dump
@ -1556,7 +1559,8 @@ int ipoib_cm_dev_init(struct net_device *dev)
for (i = 0; i < ipoib_recvq_size; ++i) {
if (!ipoib_cm_alloc_rx_skb(dev, priv->cm.srq_ring, i,
priv->cm.num_frags - 1,
priv->cm.srq_ring[i].mapping)) {
priv->cm.srq_ring[i].mapping,
GFP_KERNEL)) {
ipoib_warn(priv, "failed to allocate "
"receive buffer %d\n", i);
ipoib_cm_dev_cleanup(dev);

24
drivers/infiniband/ulp/ipoib/ipoib_ib.c
View file

@ -685,15 +685,13 @@ int ipoib_ib_dev_open(struct net_device *dev)
ret = ipoib_ib_post_receives(dev);
if (ret) {
ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret);
ipoib_ib_dev_stop(dev, 1);
return -1;
goto dev_stop;
}
ret = ipoib_cm_dev_open(dev);
if (ret) {
ipoib_warn(priv, "ipoib_cm_dev_open returned %d\n", ret);
ipoib_ib_dev_stop(dev, 1);
return -1;
goto dev_stop;
}
clear_bit(IPOIB_STOP_REAPER, &priv->flags);
@ -704,6 +702,11 @@ int ipoib_ib_dev_open(struct net_device *dev)
napi_enable(&priv->napi);
return 0;
dev_stop:
if (!test_and_set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags))
napi_enable(&priv->napi);
ipoib_ib_dev_stop(dev, 1);
return -1;
}
static void ipoib_pkey_dev_check_presence(struct net_device *dev)
@ -746,10 +749,8 @@ int ipoib_ib_dev_down(struct net_device *dev, int flush)
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
mutex_lock(&pkey_mutex);
set_bit(IPOIB_PKEY_STOP, &priv->flags);
cancel_delayed_work(&priv->pkey_poll_task);
cancel_delayed_work_sync(&priv->pkey_poll_task);
mutex_unlock(&pkey_mutex);
if (flush)
flush_workqueue(ipoib_workqueue);
}
ipoib_mcast_stop_thread(dev, flush);
@ -974,7 +975,7 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv,
u16 new_index;
int result;
mutex_lock(&priv->vlan_mutex);
down_read(&priv->vlan_rwsem);
/*
* Flush any child interfaces too -- they might be up even if
@ -983,7 +984,7 @@ static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv,
list_for_each_entry(cpriv, &priv->child_intfs, list)
__ipoib_ib_dev_flush(cpriv, level);
mutex_unlock(&priv->vlan_mutex);
up_read(&priv->vlan_rwsem);
if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) {
/* for non-child devices must check/update the pkey value here */
@ -1081,6 +1082,11 @@ void ipoib_ib_dev_cleanup(struct net_device *dev)
struct ipoib_dev_priv *priv = netdev_priv(dev);
ipoib_dbg(priv, "cleaning up ib_dev\n");
/*
* We must make sure there are no more (path) completions
* that may wish to touch priv fields that are no longer valid
*/
ipoib_flush_paths(dev);
ipoib_mcast_stop_thread(dev, 1);
ipoib_mcast_dev_flush(dev);

12
drivers/infiniband/ulp/ipoib/ipoib_main.c
View file

@ -119,7 +119,7 @@ int ipoib_open(struct net_device *dev)
struct ipoib_dev_priv *cpriv;
/* Bring up any child interfaces too */
mutex_lock(&priv->vlan_mutex);
down_read(&priv->vlan_rwsem);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
@ -129,7 +129,7 @@ int ipoib_open(struct net_device *dev)
dev_change_flags(cpriv->dev, flags | IFF_UP);
}
mutex_unlock(&priv->vlan_mutex);
up_read(&priv->vlan_rwsem);
}
netif_start_queue(dev);
@ -162,7 +162,7 @@ static int ipoib_stop(struct net_device *dev)
struct ipoib_dev_priv *cpriv;
/* Bring down any child interfaces too */
mutex_lock(&priv->vlan_mutex);
down_read(&priv->vlan_rwsem);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
@ -172,7 +172,7 @@ static int ipoib_stop(struct net_device *dev)
dev_change_flags(cpriv->dev, flags & ~IFF_UP);
}
mutex_unlock(&priv->vlan_mutex);
up_read(&priv->vlan_rwsem);
}
return 0;
@ -1350,7 +1350,7 @@ void ipoib_setup(struct net_device *dev)
ipoib_set_ethtool_ops(dev);
netif_napi_add(dev, &priv->napi, ipoib_poll, 100);
netif_napi_add(dev, &priv->napi, ipoib_poll, NAPI_POLL_WEIGHT);
dev->watchdog_timeo = HZ;
@ -1372,7 +1372,7 @@ void ipoib_setup(struct net_device *dev)
spin_lock_init(&priv->lock);
mutex_init(&priv->vlan_mutex);
init_rwsem(&priv->vlan_rwsem);
INIT_LIST_HEAD(&priv->path_list);
INIT_LIST_HEAD(&priv->child_intfs);

29
drivers/infiniband/ulp/ipoib/ipoib_multicast.c
View file

@ -386,8 +386,10 @@ static int ipoib_mcast_join_complete(int status,
mcast->mcmember.mgid.raw, status);
/* We trap for port events ourselves. */
if (status == -ENETRESET)
return 0;
if (status == -ENETRESET) {
status = 0;
goto out;
}
if (!status)
status = ipoib_mcast_join_finish(mcast, &multicast->rec);
@ -407,7 +409,8 @@ static int ipoib_mcast_join_complete(int status,
if (mcast == priv->broadcast)
queue_work(ipoib_workqueue, &priv->carrier_on_task);
return 0;
status = 0;
goto out;
}
if (mcast->logcount++ < 20) {
@ -434,7 +437,8 @@ static int ipoib_mcast_join_complete(int status,
mcast->backoff * HZ);
spin_unlock_irq(&priv->lock);
mutex_unlock(&mcast_mutex);
out:
complete(&mcast->done);
return status;
}
@ -484,11 +488,15 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
}
set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
init_completion(&mcast->done);
set_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags);
mcast->mc = ib_sa_join_multicast(&ipoib_sa_client, priv->ca, priv->port,
&rec, comp_mask, GFP_KERNEL,
ipoib_mcast_join_complete, mcast);
if (IS_ERR(mcast->mc)) {
clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
complete(&mcast->done);
ret = PTR_ERR(mcast->mc);
ipoib_warn(priv, "ib_sa_join_multicast failed, status %d\n", ret);
@ -510,10 +518,18 @@ void ipoib_mcast_join_task(struct work_struct *work)
struct ipoib_dev_priv *priv =
container_of(work, struct ipoib_dev_priv, mcast_task.work);
struct net_device *dev = priv->dev;
struct ib_port_attr port_attr;
if (!test_bit(IPOIB_MCAST_RUN, &priv->flags))
return;
if (ib_query_port(priv->ca, priv->port, &port_attr) ||
port_attr.state != IB_PORT_ACTIVE) {
ipoib_dbg(priv, "port state is not ACTIVE (state = %d) suspending join task\n",
port_attr.state);
return;
}
if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid))
ipoib_warn(priv, "ib_query_gid() failed\n");
else
@ -751,6 +767,11 @@ void ipoib_mcast_dev_flush(struct net_device *dev)
spin_unlock_irqrestore(&priv->lock, flags);
/* seperate between the wait to the leave*/
list_for_each_entry_safe(mcast, tmcast, &remove_list, list)
if (test_bit(IPOIB_MCAST_JOIN_STARTED, &mcast->flags))
wait_for_completion(&mcast->done);
list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
ipoib_mcast_leave(dev, mcast);
ipoib_mcast_free(mcast);

4
drivers/infiniband/ulp/ipoib/ipoib_netlink.c
View file

@ -142,10 +142,10 @@ static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head
priv = netdev_priv(dev);
ppriv = netdev_priv(priv->parent);
mutex_lock(&ppriv->vlan_mutex);
down_write(&ppriv->vlan_rwsem);
unregister_netdevice_queue(dev, head);
list_del(&priv->list);
mutex_unlock(&ppriv->vlan_mutex);
up_write(&ppriv->vlan_rwsem);
}
static size_t ipoib_get_size(const struct net_device *dev)

10
drivers/infiniband/ulp/ipoib/ipoib_vlan.c
View file

@ -140,7 +140,7 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
if (!rtnl_trylock())
return restart_syscall();
mutex_lock(&ppriv->vlan_mutex);
down_write(&ppriv->vlan_rwsem);
/*
* First ensure this isn't a duplicate. We check the parent device and
@ -163,7 +163,7 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
out:
mutex_unlock(&ppriv->vlan_mutex);
up_write(&ppriv->vlan_rwsem);
if (result)
free_netdev(priv->dev);
@ -185,7 +185,8 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
if (!rtnl_trylock())
return restart_syscall();
mutex_lock(&ppriv->vlan_mutex);
down_write(&ppriv->vlan_rwsem);
list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
if (priv->pkey == pkey &&
priv->child_type == IPOIB_LEGACY_CHILD) {
@ -195,7 +196,8 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
break;
}
}
mutex_unlock(&ppriv->vlan_mutex);
up_write(&ppriv->vlan_rwsem);
rtnl_unlock();
if (dev) {

500
drivers/infiniband/ulp/srp/ib_srp.c
View file

@ -46,6 +46,7 @@
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_tcq.h>
#include <scsi/srp.h>
#include <scsi/scsi_transport_srp.h>
@ -86,6 +87,32 @@ module_param(topspin_workarounds, int, 0444);
MODULE_PARM_DESC(topspin_workarounds,
"Enable workarounds for Topspin/Cisco SRP target bugs if != 0");
static struct kernel_param_ops srp_tmo_ops;
static int srp_reconnect_delay = 10;
module_param_cb(reconnect_delay, &srp_tmo_ops, &srp_reconnect_delay,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(reconnect_delay, "Time between successive reconnect attempts");
static int srp_fast_io_fail_tmo = 15;
module_param_cb(fast_io_fail_tmo, &srp_tmo_ops, &srp_fast_io_fail_tmo,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(fast_io_fail_tmo,
"Number of seconds between the observation of a transport"
" layer error and failing all I/O. \"off\" means that this"
" functionality is disabled.");
static int srp_dev_loss_tmo = 600;
module_param_cb(dev_loss_tmo, &srp_tmo_ops, &srp_dev_loss_tmo,
S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(dev_loss_tmo,
"Maximum number of seconds that the SRP transport should"
" insulate transport layer errors. After this time has been"
" exceeded the SCSI host is removed. Should be"
" between 1 and " __stringify(SCSI_DEVICE_BLOCK_MAX_TIMEOUT)
" if fast_io_fail_tmo has not been set. \"off\" means that"
" this functionality is disabled.");
static void srp_add_one(struct ib_device *device);
static void srp_remove_one(struct ib_device *device);
static void srp_recv_completion(struct ib_cq *cq, void *target_ptr);
@ -102,6 +129,48 @@ static struct ib_client srp_client = {
static struct ib_sa_client srp_sa_client;
static int srp_tmo_get(char *buffer, const struct kernel_param *kp)
{
int tmo = *(int *)kp->arg;
if (tmo >= 0)
return sprintf(buffer, "%d", tmo);
else
return sprintf(buffer, "off");
}
static int srp_tmo_set(const char *val, const struct kernel_param *kp)
{
int tmo, res;
if (strncmp(val, "off", 3) != 0) {
res = kstrtoint(val, 0, &tmo);
if (res)
goto out;
} else {
tmo = -1;
}
if (kp->arg == &srp_reconnect_delay)
res = srp_tmo_valid(tmo, srp_fast_io_fail_tmo,
srp_dev_loss_tmo);
else if (kp->arg == &srp_fast_io_fail_tmo)
res = srp_tmo_valid(srp_reconnect_delay, tmo, srp_dev_loss_tmo);
else
res = srp_tmo_valid(srp_reconnect_delay, srp_fast_io_fail_tmo,
tmo);
if (res)
goto out;
*(int *)kp->arg = tmo;
out:
return res;
}
static struct kernel_param_ops srp_tmo_ops = {
.get = srp_tmo_get,
.set = srp_tmo_set,
};
static inline struct srp_target_port *host_to_target(struct Scsi_Host *host)
{
return (struct srp_target_port *) host->hostdata;
@ -231,16 +300,16 @@ static int srp_create_target_ib(struct srp_target_port *target)
return -ENOMEM;
recv_cq = ib_create_cq(target->srp_host->srp_dev->dev,
srp_recv_completion, NULL, target, SRP_RQ_SIZE,
target->comp_vector);
srp_recv_completion, NULL, target,
target->queue_size, target->comp_vector);
if (IS_ERR(recv_cq)) {
ret = PTR_ERR(recv_cq);
goto err;
}
send_cq = ib_create_cq(target->srp_host->srp_dev->dev,
srp_send_completion, NULL, target, SRP_SQ_SIZE,
target->comp_vector);
srp_send_completion, NULL, target,
target->queue_size, target->comp_vector);
if (IS_ERR(send_cq)) {
ret = PTR_ERR(send_cq);
goto err_recv_cq;
@ -249,8 +318,8 @@ static int srp_create_target_ib(struct srp_target_port *target)
ib_req_notify_cq(recv_cq, IB_CQ_NEXT_COMP);
init_attr->event_handler = srp_qp_event;
init_attr->cap.max_send_wr = SRP_SQ_SIZE;
init_attr->cap.max_recv_wr = SRP_RQ_SIZE;
init_attr->cap.max_send_wr = target->queue_size;
init_attr->cap.max_recv_wr = target->queue_size;
init_attr->cap.max_recv_sge = 1;
init_attr->cap.max_send_sge = 1;
init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
@ -296,6 +365,10 @@ static int srp_create_target_ib(struct srp_target_port *target)
return ret;
}
/*
* Note: this function may be called without srp_alloc_iu_bufs() having been
* invoked. Hence the target->[rt]x_ring checks.
*/
static void srp_free_target_ib(struct srp_target_port *target)
{
int i;
@ -307,10 +380,18 @@ static void srp_free_target_ib(struct srp_target_port *target)
target->qp = NULL;
target->send_cq = target->recv_cq = NULL;
for (i = 0; i < SRP_RQ_SIZE; ++i)
srp_free_iu(target->srp_host, target->rx_ring[i]);
for (i = 0; i < SRP_SQ_SIZE; ++i)
srp_free_iu(target->srp_host, target->tx_ring[i]);
if (target->rx_ring) {
for (i = 0; i < target->queue_size; ++i)
srp_free_iu(target->srp_host, target->rx_ring[i]);
kfree(target->rx_ring);
target->rx_ring = NULL;
}
if (target->tx_ring) {
for (i = 0; i < target->queue_size; ++i)
srp_free_iu(target->srp_host, target->tx_ring[i]);
kfree(target->tx_ring);
target->tx_ring = NULL;
}
}
static void srp_path_rec_completion(int status,
@ -390,7 +471,7 @@ static int srp_send_req(struct srp_target_port *target)
req->param.responder_resources = 4;
req->param.remote_cm_response_timeout = 20;
req->param.local_cm_response_timeout = 20;
req->param.retry_count = 7;
req->param.retry_count = target->tl_retry_count;
req->param.rnr_retry_count = 7;
req->param.max_cm_retries = 15;
@ -496,7 +577,11 @@ static void srp_free_req_data(struct srp_target_port *target)
struct srp_request *req;
int i;
for (i = 0, req = target->req_ring; i < SRP_CMD_SQ_SIZE; ++i, ++req) {
if (!target->req_ring)
return;
for (i = 0; i < target->req_ring_size; ++i) {
req = &target->req_ring[i];
kfree(req->fmr_list);
kfree(req->map_page);
if (req->indirect_dma_addr) {
@ -506,6 +591,50 @@ static void srp_free_req_data(struct srp_target_port *target)
}
kfree(req->indirect_desc);
}
kfree(target->req_ring);
target->req_ring = NULL;
}
static int srp_alloc_req_data(struct srp_target_port *target)
{
struct srp_device *srp_dev = target->srp_host->srp_dev;
struct ib_device *ibdev = srp_dev->dev;
struct srp_request *req;
dma_addr_t dma_addr;
int i, ret = -ENOMEM;
INIT_LIST_HEAD(&target->free_reqs);
target->req_ring = kzalloc(target->req_ring_size *
sizeof(*target->req_ring), GFP_KERNEL);
if (!target->req_ring)
goto out;
for (i = 0; i < target->req_ring_size; ++i) {
req = &target->req_ring[i];
req->fmr_list = kmalloc(target->cmd_sg_cnt * sizeof(void *),
GFP_KERNEL);
req->map_page = kmalloc(SRP_FMR_SIZE * sizeof(void *),
GFP_KERNEL);
req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL);
if (!req->fmr_list || !req->map_page || !req->indirect_desc)
goto out;
dma_addr = ib_dma_map_single(ibdev, req->indirect_desc,
target->indirect_size,
DMA_TO_DEVICE);
if (ib_dma_mapping_error(ibdev, dma_addr))
goto out;
req->indirect_dma_addr = dma_addr;
req->index = i;
list_add_tail(&req->list, &target->free_reqs);
}
ret = 0;
out:
return ret;
}
/**
@ -528,12 +657,20 @@ static void srp_remove_target(struct srp_target_port *target)
WARN_ON_ONCE(target->state != SRP_TARGET_REMOVED);
srp_del_scsi_host_attr(target->scsi_host);
srp_rport_get(target->rport);
srp_remove_host(target->scsi_host);
scsi_remove_host(target->scsi_host);
srp_disconnect_target(target);
ib_destroy_cm_id(target->cm_id);
srp_free_target_ib(target);
cancel_work_sync(&target->tl_err_work);
srp_rport_put(target->rport);
srp_free_req_data(target);
spin_lock(&target->srp_host->target_lock);
list_del(&target->list);
spin_unlock(&target->srp_host->target_lock);
scsi_host_put(target->scsi_host);
}
@ -545,10 +682,6 @@ static void srp_remove_work(struct work_struct *work)
WARN_ON_ONCE(target->state != SRP_TARGET_REMOVED);
srp_remove_target(target);
spin_lock(&target->srp_host->target_lock);
list_del(&target->list);
spin_unlock(&target->srp_host->target_lock);
}
static void srp_rport_delete(struct srp_rport *rport)
@ -686,23 +819,42 @@ static void srp_free_req(struct srp_target_port *target,
spin_unlock_irqrestore(&target->lock, flags);
}
static void srp_reset_req(struct srp_target_port *target, struct srp_request *req)
static void srp_finish_req(struct srp_target_port *target,
struct srp_request *req, int result)
{
struct scsi_cmnd *scmnd = srp_claim_req(target, req, NULL);
if (scmnd) {
srp_free_req(target, req, scmnd, 0);
scmnd->result = DID_RESET << 16;
scmnd->result = result;
scmnd->scsi_done(scmnd);
}
}
static int srp_reconnect_target(struct srp_target_port *target)
static void srp_terminate_io(struct srp_rport *rport)
{
struct Scsi_Host *shost = target->scsi_host;
int i, ret;
struct srp_target_port *target = rport->lld_data;
int i;
scsi_target_block(&shost->shost_gendev);
for (i = 0; i < target->req_ring_size; ++i) {
struct srp_request *req = &target->req_ring[i];
srp_finish_req(target, req, DID_TRANSPORT_FAILFAST << 16);
}
}
/*
* It is up to the caller to ensure that srp_rport_reconnect() calls are
* serialized and that no concurrent srp_queuecommand(), srp_abort(),
* srp_reset_device() or srp_reset_host() calls will occur while this function
* is in progress. One way to realize that is not to call this function
* directly but to call srp_reconnect_rport() instead since that last function
* serializes calls of this function via rport->mutex and also blocks
* srp_queuecommand() calls before invoking this function.
*/
static int srp_rport_reconnect(struct srp_rport *rport)
{
struct srp_target_port *target = rport->lld_data;
int i, ret;
srp_disconnect_target(target);
/*
@ -721,41 +873,21 @@ static int srp_reconnect_target(struct srp_target_port *target)
else
srp_create_target_ib(target);
for (i = 0; i < SRP_CMD_SQ_SIZE; ++i) {
for (i = 0; i < target->req_ring_size; ++i) {
struct srp_request *req = &target->req_ring[i];
if (req->scmnd)
srp_reset_req(target, req);
srp_finish_req(target, req, DID_RESET << 16);
}
INIT_LIST_HEAD(&target->free_tx);
for (i = 0; i < SRP_SQ_SIZE; ++i)
for (i = 0; i < target->queue_size; ++i)
list_add(&target->tx_ring[i]->list, &target->free_tx);
if (ret == 0)
ret = srp_connect_target(target);
scsi_target_unblock(&shost->shost_gendev, ret == 0 ? SDEV_RUNNING :
SDEV_TRANSPORT_OFFLINE);
target->transport_offline = !!ret;
if (ret)
goto err;
shost_printk(KERN_INFO, target->scsi_host, PFX "reconnect succeeded\n");
return ret;
err:
shost_printk(KERN_ERR, target->scsi_host,
PFX "reconnect failed (%d), removing target port.\n", ret);
/*
* We couldn't reconnect, so kill our target port off.
* However, we have to defer the real removal because we
* are in the context of the SCSI error handler now, which
* will deadlock if we call scsi_remove_host().
*/
srp_queue_remove_work(target);
if (ret == 0)
shost_printk(KERN_INFO, target->scsi_host,
PFX "reconnect succeeded\n");
return ret;
}
@ -1302,15 +1434,30 @@ static void srp_handle_recv(struct srp_target_port *target, struct ib_wc *wc)
PFX "Recv failed with error code %d\n", res);
}
static void srp_handle_qp_err(enum ib_wc_status wc_status,
enum ib_wc_opcode wc_opcode,
/**
* srp_tl_err_work() - handle a transport layer error
*
* Note: This function may get invoked before the rport has been created,
* hence the target->rport test.
*/
static void srp_tl_err_work(struct work_struct *work)
{
struct srp_target_port *target;
target = container_of(work, struct srp_target_port, tl_err_work);
if (target->rport)
srp_start_tl_fail_timers(target->rport);
}
static void srp_handle_qp_err(enum ib_wc_status wc_status, bool send_err,
struct srp_target_port *target)
{
if (target->connected && !target->qp_in_error) {
shost_printk(KERN_ERR, target->scsi_host,
PFX "failed %s status %d\n",
wc_opcode & IB_WC_RECV ? "receive" : "send",
send_err ? "send" : "receive",
wc_status);
queue_work(system_long_wq, &target->tl_err_work);
}
target->qp_in_error = true;
}
@ -1325,7 +1472,7 @@ static void srp_recv_completion(struct ib_cq *cq, void *target_ptr)
if (likely(wc.status == IB_WC_SUCCESS)) {
srp_handle_recv(target, &wc);
} else {
srp_handle_qp_err(wc.status, wc.opcode, target);
srp_handle_qp_err(wc.status, false, target);
}
}
}
@ -1341,7 +1488,7 @@ static void srp_send_completion(struct ib_cq *cq, void *target_ptr)
iu = (struct srp_iu *) (uintptr_t) wc.wr_id;
list_add(&iu->list, &target->free_tx);
} else {
srp_handle_qp_err(wc.status, wc.opcode, target);
srp_handle_qp_err(wc.status, true, target);
}
}
}
@ -1349,17 +1496,29 @@ static void srp_send_completion(struct ib_cq *cq, void *target_ptr)
static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd)
{
struct srp_target_port *target = host_to_target(shost);
struct srp_rport *rport = target->rport;
struct srp_request *req;
struct srp_iu *iu;
struct srp_cmd *cmd;
struct ib_device *dev;
unsigned long flags;
int len;
int len, result;
const bool in_scsi_eh = !in_interrupt() && current == shost->ehandler;
if (unlikely(target->transport_offline)) {
scmnd->result = DID_NO_CONNECT << 16;
/*
* The SCSI EH thread is the only context from which srp_queuecommand()
* can get invoked for blocked devices (SDEV_BLOCK /
* SDEV_CREATED_BLOCK). Avoid racing with srp_reconnect_rport() by
* locking the rport mutex if invoked from inside the SCSI EH.
*/
if (in_scsi_eh)
mutex_lock(&rport->mutex);
result = srp_chkready(target->rport);
if (unlikely(result)) {
scmnd->result = result;
scmnd->scsi_done(scmnd);
return 0;
goto unlock_rport;
}
spin_lock_irqsave(&target->lock, flags);
@ -1404,6 +1563,10 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd)
goto err_unmap;
}
unlock_rport:
if (in_scsi_eh)
mutex_unlock(&rport->mutex);
return 0;
err_unmap:
@ -1418,14 +1581,30 @@ static int srp_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmnd)
err_unlock:
spin_unlock_irqrestore(&target->lock, flags);
if (in_scsi_eh)
mutex_unlock(&rport->mutex);
return SCSI_MLQUEUE_HOST_BUSY;
}
/*
* Note: the resources allocated in this function are freed in
* srp_free_target_ib().
*/
static int srp_alloc_iu_bufs(struct srp_target_port *target)
{
int i;
for (i = 0; i < SRP_RQ_SIZE; ++i) {
target->rx_ring = kzalloc(target->queue_size * sizeof(*target->rx_ring),
GFP_KERNEL);
if (!target->rx_ring)
goto err_no_ring;
target->tx_ring = kzalloc(target->queue_size * sizeof(*target->tx_ring),
GFP_KERNEL);
if (!target->tx_ring)
goto err_no_ring;
for (i = 0; i < target->queue_size; ++i) {
target->rx_ring[i] = srp_alloc_iu(target->srp_host,
target->max_ti_iu_len,
GFP_KERNEL, DMA_FROM_DEVICE);
@ -1433,7 +1612,7 @@ static int srp_alloc_iu_bufs(struct srp_target_port *target)
goto err;
}
for (i = 0; i < SRP_SQ_SIZE; ++i) {
for (i = 0; i < target->queue_size; ++i) {
target->tx_ring[i] = srp_alloc_iu(target->srp_host,
target->max_iu_len,
GFP_KERNEL, DMA_TO_DEVICE);
@ -1446,15 +1625,17 @@ static int srp_alloc_iu_bufs(struct srp_target_port *target)
return 0;
err:
for (i = 0; i < SRP_RQ_SIZE; ++i) {
for (i = 0; i < target->queue_size; ++i) {
srp_free_iu(target->srp_host, target->rx_ring[i]);
target->rx_ring[i] = NULL;
srp_free_iu(target->srp_host, target->tx_ring[i]);
}
for (i = 0; i < SRP_SQ_SIZE; ++i) {
srp_free_iu(target->srp_host, target->tx_ring[i]);
target->tx_ring[i] = NULL;
}
err_no_ring:
kfree(target->tx_ring);
target->tx_ring = NULL;
kfree(target->rx_ring);
target->rx_ring = NULL;
return -ENOMEM;
}
@ -1506,6 +1687,9 @@ static void srp_cm_rep_handler(struct ib_cm_id *cm_id,
target->scsi_host->can_queue
= min(target->req_lim - SRP_TSK_MGMT_SQ_SIZE,
target->scsi_host->can_queue);
target->scsi_host->cmd_per_lun
= min_t(int, target->scsi_host->can_queue,
target->scsi_host->cmd_per_lun);
} else {
shost_printk(KERN_WARNING, target->scsi_host,
PFX "Unhandled RSP opcode %#x\n", lrsp->opcode);
@ -1513,7 +1697,7 @@ static void srp_cm_rep_handler(struct ib_cm_id *cm_id,
goto error;
}
if (!target->rx_ring[0]) {
if (!target->rx_ring) {
ret = srp_alloc_iu_bufs(target);
if (ret)
goto error;
@ -1533,7 +1717,7 @@ static void srp_cm_rep_handler(struct ib_cm_id *cm_id,
if (ret)
goto error_free;
for (i = 0; i < SRP_RQ_SIZE; i++) {
for (i = 0; i < target->queue_size; i++) {
struct srp_iu *iu = target->rx_ring[i];
ret = srp_post_recv(target, iu);
if (ret)
@ -1672,6 +1856,7 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
if (ib_send_cm_drep(cm_id, NULL, 0))
shost_printk(KERN_ERR, target->scsi_host,
PFX "Sending CM DREP failed\n");
queue_work(system_long_wq, &target->tl_err_work);
break;
case IB_CM_TIMEWAIT_EXIT:
@ -1698,9 +1883,61 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event)
return 0;
}
/**
* srp_change_queue_type - changing device queue tag type
* @sdev: scsi device struct
* @tag_type: requested tag type
*
* Returns queue tag type.
*/
static int
srp_change_queue_type(struct scsi_device *sdev, int tag_type)
{
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, tag_type);
if (tag_type)
scsi_activate_tcq(sdev, sdev->queue_depth);
else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
} else
tag_type = 0;
return tag_type;
}
/**
* srp_change_queue_depth - setting device queue depth
* @sdev: scsi device struct
* @qdepth: requested queue depth
* @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP
* (see include/scsi/scsi_host.h for definition)
*
* Returns queue depth.
*/
static int
srp_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
{
struct Scsi_Host *shost = sdev->host;
int max_depth;
if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) {
max_depth = shost->can_queue;
if (!sdev->tagged_supported)
max_depth = 1;
if (qdepth > max_depth)
qdepth = max_depth;
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
} else if (reason == SCSI_QDEPTH_QFULL)
scsi_track_queue_full(sdev, qdepth);
else
return -EOPNOTSUPP;
return sdev->queue_depth;
}
static int srp_send_tsk_mgmt(struct srp_target_port *target,
u64 req_tag, unsigned int lun, u8 func)
{
struct srp_rport *rport = target->rport;
struct ib_device *dev = target->srp_host->srp_dev->dev;
struct srp_iu *iu;
struct srp_tsk_mgmt *tsk_mgmt;
@ -1710,12 +1947,20 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target,
init_completion(&target->tsk_mgmt_done);
/*
* Lock the rport mutex to avoid that srp_create_target_ib() is
* invoked while a task management function is being sent.
*/
mutex_lock(&rport->mutex);
spin_lock_irq(&target->lock);
iu = __srp_get_tx_iu(target, SRP_IU_TSK_MGMT);
spin_unlock_irq(&target->lock);
if (!iu)
if (!iu) {
mutex_unlock(&rport->mutex);
return -1;
}
ib_dma_sync_single_for_cpu(dev, iu->dma, sizeof *tsk_mgmt,
DMA_TO_DEVICE);
@ -1732,8 +1977,11 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target,
DMA_TO_DEVICE);
if (srp_post_send(target, iu, sizeof *tsk_mgmt)) {
srp_put_tx_iu(target, iu, SRP_IU_TSK_MGMT);
mutex_unlock(&rport->mutex);
return -1;
}
mutex_unlock(&rport->mutex);
if (!wait_for_completion_timeout(&target->tsk_mgmt_done,
msecs_to_jiffies(SRP_ABORT_TIMEOUT_MS)))
@ -1751,11 +1999,11 @@ static int srp_abort(struct scsi_cmnd *scmnd)
shost_printk(KERN_ERR, target->scsi_host, "SRP abort called\n");
if (!req || !srp_claim_req(target, req, scmnd))
return FAILED;
return SUCCESS;
if (srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
SRP_TSK_ABORT_TASK) == 0)
ret = SUCCESS;
else if (target->transport_offline)
else if (target->rport->state == SRP_RPORT_LOST)
ret = FAST_IO_FAIL;
else
ret = FAILED;
@ -1779,10 +2027,10 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
if (target->tsk_mgmt_status)
return FAILED;
for (i = 0; i < SRP_CMD_SQ_SIZE; ++i) {
for (i = 0; i < target->req_ring_size; ++i) {
struct srp_request *req = &target->req_ring[i];
if (req->scmnd && req->scmnd->device == scmnd->device)
srp_reset_req(target, req);
srp_finish_req(target, req, DID_RESET << 16);
}
return SUCCESS;
@ -1791,14 +2039,10 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
static int srp_reset_host(struct scsi_cmnd *scmnd)
{
struct srp_target_port *target = host_to_target(scmnd->device->host);
int ret = FAILED;
shost_printk(KERN_ERR, target->scsi_host, PFX "SRP reset_host called\n");
if (!srp_reconnect_target(target))
ret = SUCCESS;
return ret;
return srp_reconnect_rport(target->rport) == 0 ? SUCCESS : FAILED;
}
static int srp_slave_configure(struct scsi_device *sdev)
@ -1851,6 +2095,14 @@ static ssize_t show_pkey(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "0x%04x\n", be16_to_cpu(target->path.pkey));
}
static ssize_t show_sgid(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct srp_target_port *target = host_to_target(class_to_shost(dev));
return sprintf(buf, "%pI6\n", target->path.sgid.raw);
}
static ssize_t show_dgid(struct device *dev, struct device_attribute *attr,
char *buf)
{
@ -1907,6 +2159,14 @@ static ssize_t show_comp_vector(struct device *dev,
return sprintf(buf, "%d\n", target->comp_vector);
}
static ssize_t show_tl_retry_count(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct srp_target_port *target = host_to_target(class_to_shost(dev));
return sprintf(buf, "%d\n", target->tl_retry_count);
}
static ssize_t show_cmd_sg_entries(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -1927,6 +2187,7 @@ static DEVICE_ATTR(id_ext, S_IRUGO, show_id_ext, NULL);
static DEVICE_ATTR(ioc_guid, S_IRUGO, show_ioc_guid, NULL);
static DEVICE_ATTR(service_id, S_IRUGO, show_service_id, NULL);
static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
static DEVICE_ATTR(sgid, S_IRUGO, show_sgid, NULL);
static DEVICE_ATTR(dgid, S_IRUGO, show_dgid, NULL);
static DEVICE_ATTR(orig_dgid, S_IRUGO, show_orig_dgid, NULL);
static DEVICE_ATTR(req_lim, S_IRUGO, show_req_lim, NULL);
@ -1934,6 +2195,7 @@ static DEVICE_ATTR(zero_req_lim, S_IRUGO, show_zero_req_lim, NULL);
static DEVICE_ATTR(local_ib_port, S_IRUGO, show_local_ib_port, NULL);
static DEVICE_ATTR(local_ib_device, S_IRUGO, show_local_ib_device, NULL);
static DEVICE_ATTR(comp_vector, S_IRUGO, show_comp_vector, NULL);
static DEVICE_ATTR(tl_retry_count, S_IRUGO, show_tl_retry_count, NULL);
static DEVICE_ATTR(cmd_sg_entries, S_IRUGO, show_cmd_sg_entries, NULL);
static DEVICE_ATTR(allow_ext_sg, S_IRUGO, show_allow_ext_sg, NULL);
@ -1942,6 +2204,7 @@ static struct device_attribute *srp_host_attrs[] = {
&dev_attr_ioc_guid,
&dev_attr_service_id,
&dev_attr_pkey,
&dev_attr_sgid,
&dev_attr_dgid,
&dev_attr_orig_dgid,
&dev_attr_req_lim,
@ -1949,6 +2212,7 @@ static struct device_attribute *srp_host_attrs[] = {
&dev_attr_local_ib_port,
&dev_attr_local_ib_device,
&dev_attr_comp_vector,
&dev_attr_tl_retry_count,
&dev_attr_cmd_sg_entries,
&dev_attr_allow_ext_sg,
NULL
@ -1961,14 +2225,16 @@ static struct scsi_host_template srp_template = {
.slave_configure = srp_slave_configure,
.info = srp_target_info,
.queuecommand = srp_queuecommand,
.change_queue_depth = srp_change_queue_depth,
.change_queue_type = srp_change_queue_type,
.eh_abort_handler = srp_abort,
.eh_device_reset_handler = srp_reset_device,
.eh_host_reset_handler = srp_reset_host,
.skip_settle_delay = true,
.sg_tablesize = SRP_DEF_SG_TABLESIZE,
.can_queue = SRP_CMD_SQ_SIZE,
.can_queue = SRP_DEFAULT_CMD_SQ_SIZE,
.this_id = -1,
.cmd_per_lun = SRP_CMD_SQ_SIZE,
.cmd_per_lun = SRP_DEFAULT_CMD_SQ_SIZE,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = srp_host_attrs
};
@ -1994,6 +2260,7 @@ static int srp_add_target(struct srp_host *host, struct srp_target_port *target)
}
rport->lld_data = target;
target->rport = rport;
spin_lock(&host->target_lock);
list_add_tail(&target->list, &host->target_list);
@ -2073,6 +2340,8 @@ enum {
SRP_OPT_ALLOW_EXT_SG = 1 << 10,
SRP_OPT_SG_TABLESIZE = 1 << 11,
SRP_OPT_COMP_VECTOR = 1 << 12,
SRP_OPT_TL_RETRY_COUNT = 1 << 13,
SRP_OPT_QUEUE_SIZE = 1 << 14,
SRP_OPT_ALL = (SRP_OPT_ID_EXT |
SRP_OPT_IOC_GUID |
SRP_OPT_DGID |
@ -2094,6 +2363,8 @@ static const match_table_t srp_opt_tokens = {
{ SRP_OPT_ALLOW_EXT_SG, "allow_ext_sg=%u" },
{ SRP_OPT_SG_TABLESIZE, "sg_tablesize=%u" },
{ SRP_OPT_COMP_VECTOR, "comp_vector=%u" },
{ SRP_OPT_TL_RETRY_COUNT, "tl_retry_count=%u" },
{ SRP_OPT_QUEUE_SIZE, "queue_size=%d" },
{ SRP_OPT_ERR, NULL }
};
@ -2188,13 +2459,25 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
target->scsi_host->max_sectors = token;
break;
case SRP_OPT_QUEUE_SIZE:
if (match_int(args, &token) || token < 1) {
pr_warn("bad queue_size parameter '%s'\n", p);
goto out;
}
target->scsi_host->can_queue = token;
target->queue_size = token + SRP_RSP_SQ_SIZE +
SRP_TSK_MGMT_SQ_SIZE;
if (!(opt_mask & SRP_OPT_MAX_CMD_PER_LUN))
target->scsi_host->cmd_per_lun = token;
break;
case SRP_OPT_MAX_CMD_PER_LUN:
if (match_int(args, &token)) {
if (match_int(args, &token) || token < 1) {
pr_warn("bad max cmd_per_lun parameter '%s'\n",
p);
goto out;
}
target->scsi_host->cmd_per_lun = min(token, SRP_CMD_SQ_SIZE);
target->scsi_host->cmd_per_lun = token;
break;
case SRP_OPT_IO_CLASS:
@ -2257,6 +2540,15 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
target->comp_vector = token;
break;
case SRP_OPT_TL_RETRY_COUNT:
if (match_int(args, &token) || token < 2 || token > 7) {
pr_warn("bad tl_retry_count parameter '%s' (must be a number between 2 and 7)\n",
p);
goto out;
}
target->tl_retry_count = token;
break;
default:
pr_warn("unknown parameter or missing value '%s' in target creation request\n",
p);
@ -2273,6 +2565,12 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
pr_warn("target creation request is missing parameter '%s'\n",
srp_opt_tokens[i].pattern);
if (target->scsi_host->cmd_per_lun > target->scsi_host->can_queue
&& (opt_mask & SRP_OPT_MAX_CMD_PER_LUN))
pr_warn("cmd_per_lun = %d > queue_size = %d\n",
target->scsi_host->cmd_per_lun,
target->scsi_host->can_queue);
out:
kfree(options);
return ret;
@ -2287,8 +2585,7 @@ static ssize_t srp_create_target(struct device *dev,
struct Scsi_Host *target_host;
struct srp_target_port *target;
struct ib_device *ibdev = host->srp_dev->dev;
dma_addr_t dma_addr;
int i, ret;
int ret;
target_host = scsi_host_alloc(&srp_template,
sizeof (struct srp_target_port));
@ -2311,11 +2608,15 @@ static ssize_t srp_create_target(struct device *dev,
target->cmd_sg_cnt = cmd_sg_entries;
target->sg_tablesize = indirect_sg_entries ? : cmd_sg_entries;
target->allow_ext_sg = allow_ext_sg;
target->tl_retry_count = 7;
target->queue_size = SRP_DEFAULT_QUEUE_SIZE;
ret = srp_parse_options(buf, target);
if (ret)
goto err;
target->req_ring_size = target->queue_size - SRP_TSK_MGMT_SQ_SIZE;
if (!srp_conn_unique(target->srp_host, target)) {
shost_printk(KERN_INFO, target->scsi_host,
PFX "Already connected to target port with id_ext=%016llx;ioc_guid=%016llx;initiator_ext=%016llx\n",
@ -2339,31 +2640,13 @@ static ssize_t srp_create_target(struct device *dev,
sizeof (struct srp_indirect_buf) +
target->cmd_sg_cnt * sizeof (struct srp_direct_buf);
INIT_WORK(&target->tl_err_work, srp_tl_err_work);
INIT_WORK(&target->remove_work, srp_remove_work);
spin_lock_init(&target->lock);
INIT_LIST_HEAD(&target->free_tx);
INIT_LIST_HEAD(&target->free_reqs);
for (i = 0; i < SRP_CMD_SQ_SIZE; ++i) {
struct srp_request *req = &target->req_ring[i];
req->fmr_list = kmalloc(target->cmd_sg_cnt * sizeof (void *),
GFP_KERNEL);
req->map_page = kmalloc(SRP_FMR_SIZE * sizeof (void *),
GFP_KERNEL);
req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL);
if (!req->fmr_list || !req->map_page || !req->indirect_desc)
goto err_free_mem;
dma_addr = ib_dma_map_single(ibdev, req->indirect_desc,
target->indirect_size,
DMA_TO_DEVICE);
if (ib_dma_mapping_error(ibdev, dma_addr))
goto err_free_mem;
req->indirect_dma_addr = dma_addr;
req->index = i;
list_add_tail(&req->list, &target->free_reqs);
}
ret = srp_alloc_req_data(target);
if (ret)
goto err_free_mem;
ib_query_gid(ibdev, host->port, 0, &target->path.sgid);
@ -2612,7 +2895,14 @@ static void srp_remove_one(struct ib_device *device)
}
static struct srp_function_template ib_srp_transport_functions = {
.has_rport_state = true,
.reset_timer_if_blocked = true,
.reconnect_delay = &srp_reconnect_delay,
.fast_io_fail_tmo = &srp_fast_io_fail_tmo,
.dev_loss_tmo = &srp_dev_loss_tmo,
.reconnect = srp_rport_reconnect,
.rport_delete = srp_rport_delete,
.terminate_rport_io = srp_terminate_io,
};
static int __init srp_init_module(void)

21
drivers/infiniband/ulp/srp/ib_srp.h
View file

@ -57,14 +57,11 @@ enum {
SRP_MAX_LUN = 512,
SRP_DEF_SG_TABLESIZE = 12,
SRP_RQ_SHIFT = 6,
SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
SRP_SQ_SIZE = SRP_RQ_SIZE,
SRP_DEFAULT_QUEUE_SIZE = 1 << 6,
SRP_RSP_SQ_SIZE = 1,
SRP_REQ_SQ_SIZE = SRP_SQ_SIZE - SRP_RSP_SQ_SIZE,
SRP_TSK_MGMT_SQ_SIZE = 1,
SRP_CMD_SQ_SIZE = SRP_REQ_SQ_SIZE - SRP_TSK_MGMT_SQ_SIZE,
SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE -
SRP_TSK_MGMT_SQ_SIZE,
SRP_TAG_NO_REQ = ~0U,
SRP_TAG_TSK_MGMT = 1U << 31,
@ -140,7 +137,6 @@ struct srp_target_port {
unsigned int cmd_sg_cnt;
unsigned int indirect_size;
bool allow_ext_sg;
bool transport_offline;
/* Everything above this point is used in the hot path of
* command processing. Try to keep them packed into cachelines.
@ -153,10 +149,14 @@ struct srp_target_port {
u16 io_class;
struct srp_host *srp_host;
struct Scsi_Host *scsi_host;
struct srp_rport *rport;
char target_name[32];
unsigned int scsi_id;
unsigned int sg_tablesize;
int queue_size;
int req_ring_size;
int comp_vector;
int tl_retry_count;
struct ib_sa_path_rec path;
__be16 orig_dgid[8];
@ -172,10 +172,11 @@ struct srp_target_port {
int zero_req_lim;
struct srp_iu *tx_ring[SRP_SQ_SIZE];
struct srp_iu *rx_ring[SRP_RQ_SIZE];
struct srp_request req_ring[SRP_CMD_SQ_SIZE];
struct srp_iu **tx_ring;
struct srp_iu **rx_ring;
struct srp_request *req_ring;
struct work_struct tl_err_work;
struct work_struct remove_work;
struct list_head list;

106
drivers/net/ethernet/mellanox/mlx5/core/cmd.c
View file

@ -98,6 +98,7 @@ enum {
static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
struct mlx5_cmd_msg *in,
struct mlx5_cmd_msg *out,
void *uout, int uout_size,
mlx5_cmd_cbk_t cbk,
void *context, int page_queue)
{
@ -110,6 +111,8 @@ static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
ent->in = in;
ent->out = out;
ent->uout = uout;
ent->uout_size = uout_size;
ent->callback = cbk;
ent->context = context;
ent->cmd = cmd;
@ -534,6 +537,7 @@ static void cmd_work_handler(struct work_struct *work)
ent->lay = lay;
memset(lay, 0, sizeof(*lay));
memcpy(lay->in, ent->in->first.data, sizeof(lay->in));
ent->op = be32_to_cpu(lay->in[0]) >> 16;
if (ent->in->next)
lay->in_ptr = cpu_to_be64(ent->in->next->dma);
lay->inlen = cpu_to_be32(ent->in->len);
@ -628,7 +632,8 @@ static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent)
* 2. page queue commands do not support asynchrous completion
*/
static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
struct mlx5_cmd_msg *out, mlx5_cmd_cbk_t callback,
struct mlx5_cmd_msg *out, void *uout, int uout_size,
mlx5_cmd_cbk_t callback,
void *context, int page_queue, u8 *status)
{
struct mlx5_cmd *cmd = &dev->cmd;
@ -642,7 +647,8 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
if (callback && page_queue)
return -EINVAL;
ent = alloc_cmd(cmd, in, out, callback, context, page_queue);
ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context,
page_queue);
if (IS_ERR(ent))
return PTR_ERR(ent);
@ -670,10 +676,10 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode);
if (op < ARRAY_SIZE(cmd->stats)) {
stats = &cmd->stats[op];
spin_lock(&stats->lock);
spin_lock_irq(&stats->lock);
stats->sum += ds;
++stats->n;
spin_unlock(&stats->lock);
spin_unlock_irq(&stats->lock);
}
mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME,
"fw exec time for %s is %lld nsec\n",
@ -826,7 +832,7 @@ static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev,
int n;
int i;
msg = kzalloc(sizeof(*msg), GFP_KERNEL);
msg = kzalloc(sizeof(*msg), flags);
if (!msg)
return ERR_PTR(-ENOMEM);
@ -1109,6 +1115,19 @@ void mlx5_cmd_use_polling(struct mlx5_core_dev *dev)
up(&cmd->sem);
}
static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
{
unsigned long flags;
if (msg->cache) {
spin_lock_irqsave(&msg->cache->lock, flags);
list_add_tail(&msg->list, &msg->cache->head);
spin_unlock_irqrestore(&msg->cache->lock, flags);
} else {
mlx5_free_cmd_msg(dev, msg);
}
}
void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector)
{
struct mlx5_cmd *cmd = &dev->cmd;
@ -1117,6 +1136,10 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector)
void *context;
int err;
int i;
ktime_t t1, t2, delta;
s64 ds;
struct mlx5_cmd_stats *stats;
unsigned long flags;
for (i = 0; i < (1 << cmd->log_sz); i++) {
if (test_bit(i, &vector)) {
@ -1141,9 +1164,29 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, unsigned long vector)
}
free_ent(cmd, ent->idx);
if (ent->callback) {
t1 = timespec_to_ktime(ent->ts1);
t2 = timespec_to_ktime(ent->ts2);
delta = ktime_sub(t2, t1);
ds = ktime_to_ns(delta);
if (ent->op < ARRAY_SIZE(cmd->stats)) {
stats = &cmd->stats[ent->op];
spin_lock_irqsave(&stats->lock, flags);
stats->sum += ds;
++stats->n;
spin_unlock_irqrestore(&stats->lock, flags);
}
callback = ent->callback;
context = ent->context;
err = ent->ret;
if (!err)
err = mlx5_copy_from_msg(ent->uout,
ent->out,
ent->uout_size);
mlx5_free_cmd_msg(dev, ent->out);
free_msg(dev, ent->in);
free_cmd(ent);
callback(err, context);
} else {
@ -1160,7 +1203,8 @@ static int status_to_err(u8 status)
return status ? -1 : 0; /* TBD more meaningful codes */
}
static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size)
static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size,
gfp_t gfp)
{
struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM);
struct mlx5_cmd *cmd = &dev->cmd;
@ -1172,7 +1216,7 @@ static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size)
ent = &cmd->cache.med;
if (ent) {
spin_lock(&ent->lock);
spin_lock_irq(&ent->lock);
if (!list_empty(&ent->head)) {
msg = list_entry(ent->head.next, typeof(*msg), list);
/* For cached lists, we must explicitly state what is
@ -1181,43 +1225,34 @@ static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size)
msg->len = in_size;
list_del(&msg->list);
}
spin_unlock(&ent->lock);
spin_unlock_irq(&ent->lock);
}
if (IS_ERR(msg))
msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, in_size);
msg = mlx5_alloc_cmd_msg(dev, gfp, in_size);
return msg;
}
static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
{
if (msg->cache) {
spin_lock(&msg->cache->lock);
list_add_tail(&msg->list, &msg->cache->head);
spin_unlock(&msg->cache->lock);
} else {
mlx5_free_cmd_msg(dev, msg);
}
}
static int is_manage_pages(struct mlx5_inbox_hdr *in)
{
return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES;
}
int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
int out_size)
static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
int out_size, mlx5_cmd_cbk_t callback, void *context)
{
struct mlx5_cmd_msg *inb;
struct mlx5_cmd_msg *outb;
int pages_queue;
gfp_t gfp;
int err;
u8 status = 0;
pages_queue = is_manage_pages(in);
gfp = callback ? GFP_ATOMIC : GFP_KERNEL;
inb = alloc_msg(dev, in_size);
inb = alloc_msg(dev, in_size, gfp);
if (IS_ERR(inb)) {
err = PTR_ERR(inb);
return err;
@ -1229,13 +1264,14 @@ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
goto out_in;
}
outb = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, out_size);
outb = mlx5_alloc_cmd_msg(dev, gfp, out_size);
if (IS_ERR(outb)) {
err = PTR_ERR(outb);
goto out_in;
}
err = mlx5_cmd_invoke(dev, inb, outb, NULL, NULL, pages_queue, &status);
err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context,
pages_queue, &status);
if (err)
goto out_out;
@ -1248,14 +1284,30 @@ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
err = mlx5_copy_from_msg(out, outb, out_size);
out_out:
mlx5_free_cmd_msg(dev, outb);
if (!callback)
mlx5_free_cmd_msg(dev, outb);
out_in:
free_msg(dev, inb);
if (!callback)
free_msg(dev, inb);
return err;
}
int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
int out_size)
{
return cmd_exec(dev, in, in_size, out, out_size, NULL, NULL);
}
EXPORT_SYMBOL(mlx5_cmd_exec);
int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size,
void *out, int out_size, mlx5_cmd_cbk_t callback,
void *context)
{
return cmd_exec(dev, in, in_size, out, out_size, callback, context);
}
EXPORT_SYMBOL(mlx5_cmd_exec_cb);
static void destroy_msg_cache(struct mlx5_core_dev *dev)
{
struct mlx5_cmd *cmd = &dev->cmd;

8
drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
View file

@ -154,10 +154,10 @@ static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
return 0;
stats = filp->private_data;
spin_lock(&stats->lock);
spin_lock_irq(&stats->lock);
if (stats->n)
field = div64_u64(stats->sum, stats->n);
spin_unlock(&stats->lock);
spin_unlock_irq(&stats->lock);
ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
if (ret > 0) {
if (copy_to_user(buf, tbuf, ret))
@ -175,10 +175,10 @@ static ssize_t average_write(struct file *filp, const char __user *buf,
struct mlx5_cmd_stats *stats;
stats = filp->private_data;
spin_lock(&stats->lock);
spin_lock_irq(&stats->lock);
stats->sum = 0;
stats->n = 0;
spin_unlock(&stats->lock);
spin_unlock_irq(&stats->lock);
*pos += count;

2
drivers/net/ethernet/mellanox/mlx5/core/eq.c
View file

@ -354,7 +354,7 @@ int mlx5_create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, u8 vecidx,
in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_EQ);
in->ctx.log_sz_usr_page = cpu_to_be32(ilog2(eq->nent) << 24 | uar->index);
in->ctx.intr = vecidx;
in->ctx.log_page_size = PAGE_SHIFT - 12;
in->ctx.log_page_size = eq->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT;
in->events_mask = cpu_to_be64(mask);
err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));

35
drivers/net/ethernet/mellanox/mlx5/core/main.c
View file

@ -159,6 +159,36 @@ struct mlx5_reg_host_endianess {
u8 rsvd[15];
};
#define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos))
enum {
MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) |
CAP_MASK(MLX5_CAP_OFF_DCT, 1),
};
/* selectively copy writable fields clearing any reserved area
*/
static void copy_rw_fields(struct mlx5_hca_cap *to, struct mlx5_hca_cap *from)
{
u64 v64;
to->log_max_qp = from->log_max_qp & 0x1f;
to->log_max_ra_req_dc = from->log_max_ra_req_dc & 0x3f;
to->log_max_ra_res_dc = from->log_max_ra_res_dc & 0x3f;
to->log_max_ra_req_qp = from->log_max_ra_req_qp & 0x3f;
to->log_max_ra_res_qp = from->log_max_ra_res_qp & 0x3f;
to->log_max_atomic_size_qp = from->log_max_atomic_size_qp;
to->log_max_atomic_size_dc = from->log_max_atomic_size_dc;
v64 = be64_to_cpu(from->flags) & MLX5_CAP_BITS_RW_MASK;
to->flags = cpu_to_be64(v64);
}
enum {
HCA_CAP_OPMOD_GET_MAX = 0,
HCA_CAP_OPMOD_GET_CUR = 1,
};
static int handle_hca_cap(struct mlx5_core_dev *dev)
{
struct mlx5_cmd_query_hca_cap_mbox_out *query_out = NULL;
@ -180,7 +210,7 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
}
query_ctx.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
query_ctx.hdr.opmod = cpu_to_be16(0x1);
query_ctx.hdr.opmod = cpu_to_be16(HCA_CAP_OPMOD_GET_CUR);
err = mlx5_cmd_exec(dev, &query_ctx, sizeof(query_ctx),
query_out, sizeof(*query_out));
if (err)
@ -192,8 +222,7 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
goto query_ex;
}
memcpy(&set_ctx->hca_cap, &query_out->hca_cap,
sizeof(set_ctx->hca_cap));
copy_rw_fields(&set_ctx->hca_cap, &query_out->hca_cap);
if (dev->profile->mask & MLX5_PROF_MASK_QP_SIZE)
set_ctx->hca_cap.log_max_qp = dev->profile->log_max_qp;

32
drivers/net/ethernet/mellanox/mlx5/core/mr.c
View file

@ -37,31 +37,41 @@
#include "mlx5_core.h"
int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
struct mlx5_create_mkey_mbox_in *in, int inlen)
struct mlx5_create_mkey_mbox_in *in, int inlen,
mlx5_cmd_cbk_t callback, void *context,
struct mlx5_create_mkey_mbox_out *out)
{
struct mlx5_create_mkey_mbox_out out;
struct mlx5_create_mkey_mbox_out lout;
int err;
u8 key;
memset(&out, 0, sizeof(out));
spin_lock(&dev->priv.mkey_lock);
memset(&lout, 0, sizeof(lout));
spin_lock_irq(&dev->priv.mkey_lock);
key = dev->priv.mkey_key++;
spin_unlock(&dev->priv.mkey_lock);
spin_unlock_irq(&dev->priv.mkey_lock);
in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
if (callback) {
err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
callback, context);
return err;
} else {
err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
}
if (err) {
mlx5_core_dbg(dev, "cmd exec faile %d\n", err);
return err;
}
if (out.hdr.status) {
mlx5_core_dbg(dev, "status %d\n", out.hdr.status);
return mlx5_cmd_status_to_err(&out.hdr);
if (lout.hdr.status) {
mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
return mlx5_cmd_status_to_err(&lout.hdr);
}
mr->key = mlx5_idx_to_mkey(be32_to_cpu(out.mkey) & 0xffffff) | key;
mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n", be32_to_cpu(out.mkey), key, mr->key);
mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
be32_to_cpu(lout.mkey), key, mr->key);
return err;
}

196
drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
View file

@ -57,10 +57,13 @@ struct mlx5_pages_req {
};
struct fw_page {
struct rb_node rb_node;
u64 addr;
struct page *page;
u16 func_id;
struct rb_node rb_node;
u64 addr;
struct page *page;
u16 func_id;
unsigned long bitmask;
struct list_head list;
unsigned free_count;
};
struct mlx5_query_pages_inbox {
@ -94,6 +97,11 @@ enum {
MAX_RECLAIM_TIME_MSECS = 5000,
};
enum {
MLX5_MAX_RECLAIM_TIME_MILI = 5000,
MLX5_NUM_4K_IN_PAGE = PAGE_SIZE / 4096,
};
static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u16 func_id)
{
struct rb_root *root = &dev->priv.page_root;
@ -101,6 +109,7 @@ static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u
struct rb_node *parent = NULL;
struct fw_page *nfp;
struct fw_page *tfp;
int i;
while (*new) {
parent = *new;
@ -113,25 +122,29 @@ static int insert_page(struct mlx5_core_dev *dev, u64 addr, struct page *page, u
return -EEXIST;
}
nfp = kmalloc(sizeof(*nfp), GFP_KERNEL);
nfp = kzalloc(sizeof(*nfp), GFP_KERNEL);
if (!nfp)
return -ENOMEM;
nfp->addr = addr;
nfp->page = page;
nfp->func_id = func_id;
nfp->free_count = MLX5_NUM_4K_IN_PAGE;
for (i = 0; i < MLX5_NUM_4K_IN_PAGE; i++)
set_bit(i, &nfp->bitmask);
rb_link_node(&nfp->rb_node, parent, new);
rb_insert_color(&nfp->rb_node, root);
list_add(&nfp->list, &dev->priv.free_list);
return 0;
}
static struct page *remove_page(struct mlx5_core_dev *dev, u64 addr)
static struct fw_page *find_fw_page(struct mlx5_core_dev *dev, u64 addr)
{
struct rb_root *root = &dev->priv.page_root;
struct rb_node *tmp = root->rb_node;
struct page *result = NULL;
struct fw_page *result = NULL;
struct fw_page *tfp;
while (tmp) {
@ -141,9 +154,7 @@ static struct page *remove_page(struct mlx5_core_dev *dev, u64 addr)
} else if (tfp->addr > addr) {
tmp = tmp->rb_right;
} else {
rb_erase(&tfp->rb_node, root);
result = tfp->page;
kfree(tfp);
result = tfp;
break;
}
}
@ -176,12 +187,98 @@ static int mlx5_cmd_query_pages(struct mlx5_core_dev *dev, u16 *func_id,
return err;
}
static int alloc_4k(struct mlx5_core_dev *dev, u64 *addr)
{
struct fw_page *fp;
unsigned n;
if (list_empty(&dev->priv.free_list)) {
return -ENOMEM;
mlx5_core_warn(dev, "\n");
}
fp = list_entry(dev->priv.free_list.next, struct fw_page, list);
n = find_first_bit(&fp->bitmask, 8 * sizeof(fp->bitmask));
if (n >= MLX5_NUM_4K_IN_PAGE) {
mlx5_core_warn(dev, "alloc 4k bug\n");
return -ENOENT;
}
clear_bit(n, &fp->bitmask);
fp->free_count--;
if (!fp->free_count)
list_del(&fp->list);
*addr = fp->addr + n * 4096;
return 0;
}
static void free_4k(struct mlx5_core_dev *dev, u64 addr)
{
struct fw_page *fwp;
int n;
fwp = find_fw_page(dev, addr & PAGE_MASK);
if (!fwp) {
mlx5_core_warn(dev, "page not found\n");
return;
}
n = (addr & ~PAGE_MASK) % 4096;
fwp->free_count++;
set_bit(n, &fwp->bitmask);
if (fwp->free_count == MLX5_NUM_4K_IN_PAGE) {
rb_erase(&fwp->rb_node, &dev->priv.page_root);
if (fwp->free_count != 1)
list_del(&fwp->list);
dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
__free_page(fwp->page);
kfree(fwp);
} else if (fwp->free_count == 1) {
list_add(&fwp->list, &dev->priv.free_list);
}
}
static int alloc_system_page(struct mlx5_core_dev *dev, u16 func_id)
{
struct page *page;
u64 addr;
int err;
page = alloc_page(GFP_HIGHUSER);
if (!page) {
mlx5_core_warn(dev, "failed to allocate page\n");
return -ENOMEM;
}
addr = dma_map_page(&dev->pdev->dev, page, 0,
PAGE_SIZE, DMA_BIDIRECTIONAL);
if (dma_mapping_error(&dev->pdev->dev, addr)) {
mlx5_core_warn(dev, "failed dma mapping page\n");
err = -ENOMEM;
goto out_alloc;
}
err = insert_page(dev, addr, page, func_id);
if (err) {
mlx5_core_err(dev, "failed to track allocated page\n");
goto out_mapping;
}
return 0;
out_mapping:
dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
out_alloc:
__free_page(page);
return err;
}
static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
int notify_fail)
{
struct mlx5_manage_pages_inbox *in;
struct mlx5_manage_pages_outbox out;
struct page *page;
struct mlx5_manage_pages_inbox *nin;
int inlen;
u64 addr;
int err;
@ -196,27 +293,15 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
memset(&out, 0, sizeof(out));
for (i = 0; i < npages; i++) {
page = alloc_page(GFP_HIGHUSER);
if (!page) {
err = -ENOMEM;
mlx5_core_warn(dev, "failed to allocate page\n");
goto out_alloc;
}
addr = dma_map_page(&dev->pdev->dev, page, 0,
PAGE_SIZE, DMA_BIDIRECTIONAL);
if (dma_mapping_error(&dev->pdev->dev, addr)) {
mlx5_core_warn(dev, "failed dma mapping page\n");
__free_page(page);
err = -ENOMEM;
goto out_alloc;
}
err = insert_page(dev, addr, page, func_id);
retry:
err = alloc_4k(dev, &addr);
if (err) {
mlx5_core_err(dev, "failed to track allocated page\n");
dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
__free_page(page);
err = -ENOMEM;
goto out_alloc;
if (err == -ENOMEM)
err = alloc_system_page(dev, func_id);
if (err)
goto out_4k;
goto retry;
}
in->pas[i] = cpu_to_be64(addr);
}
@ -226,7 +311,6 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
in->func_id = cpu_to_be16(func_id);
in->num_entries = cpu_to_be32(npages);
err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
mlx5_core_dbg(dev, "err %d\n", err);
if (err) {
mlx5_core_warn(dev, "func_id 0x%x, npages %d, err %d\n", func_id, npages, err);
goto out_alloc;
@ -247,25 +331,22 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
out_alloc:
if (notify_fail) {
memset(in, 0, inlen);
memset(&out, 0, sizeof(out));
in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
in->hdr.opmod = cpu_to_be16(MLX5_PAGES_CANT_GIVE);
if (mlx5_cmd_exec(dev, in, sizeof(*in), &out, sizeof(out)))
mlx5_core_warn(dev, "\n");
}
for (i--; i >= 0; i--) {
addr = be64_to_cpu(in->pas[i]);
page = remove_page(dev, addr);
if (!page) {
mlx5_core_err(dev, "BUG: can't remove page at addr 0x%llx\n",
addr);
continue;
nin = kzalloc(sizeof(*nin), GFP_KERNEL);
if (!nin) {
mlx5_core_warn(dev, "allocation failed\n");
goto out_4k;
}
dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
__free_page(page);
memset(&out, 0, sizeof(out));
nin->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
nin->hdr.opmod = cpu_to_be16(MLX5_PAGES_CANT_GIVE);
if (mlx5_cmd_exec(dev, nin, sizeof(*nin), &out, sizeof(out)))
mlx5_core_warn(dev, "page notify failed\n");
kfree(nin);
}
out_4k:
for (i--; i >= 0; i--)
free_4k(dev, be64_to_cpu(in->pas[i]));
out_free:
mlx5_vfree(in);
return err;
@ -276,7 +357,6 @@ static int reclaim_pages(struct mlx5_core_dev *dev, u32 func_id, int npages,
{
struct mlx5_manage_pages_inbox in;
struct mlx5_manage_pages_outbox *out;
struct page *page;
int num_claimed;
int outlen;
u64 addr;
@ -315,13 +395,7 @@ static int reclaim_pages(struct mlx5_core_dev *dev, u32 func_id, int npages,
for (i = 0; i < num_claimed; i++) {
addr = be64_to_cpu(out->pas[i]);
page = remove_page(dev, addr);
if (!page) {
mlx5_core_warn(dev, "FW reported unknown DMA address 0x%llx\n", addr);
} else {
dma_unmap_page(&dev->pdev->dev, addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
__free_page(page);
}
free_4k(dev, addr);
}
out_free:
@ -381,14 +455,19 @@ int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev, int boot)
return give_pages(dev, func_id, npages, 0);
}
enum {
MLX5_BLKS_FOR_RECLAIM_PAGES = 12
};
static int optimal_reclaimed_pages(void)
{
struct mlx5_cmd_prot_block *block;
struct mlx5_cmd_layout *lay;
int ret;
ret = (sizeof(lay->in) + sizeof(block->data) -
sizeof(struct mlx5_manage_pages_outbox)) / 8;
ret = (sizeof(lay->out) + MLX5_BLKS_FOR_RECLAIM_PAGES * sizeof(block->data) -
sizeof(struct mlx5_manage_pages_outbox)) /
FIELD_SIZEOF(struct mlx5_manage_pages_outbox, pas[0]);
return ret;
}
@ -427,6 +506,7 @@ int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev)
void mlx5_pagealloc_init(struct mlx5_core_dev *dev)
{
dev->priv.page_root = RB_ROOT;
INIT_LIST_HEAD(&dev->priv.free_list);
}
void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev)

540
drivers/scsi/scsi_transport_srp.c
View file

@ -24,12 +24,15 @@
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_srp.h>
#include "scsi_priv.h"
#include "scsi_transport_srp_internal.h"
struct srp_host_attrs {
@ -38,7 +41,7 @@ struct srp_host_attrs {
#define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data)
#define SRP_HOST_ATTRS 0
#define SRP_RPORT_ATTRS 3
#define SRP_RPORT_ATTRS 8
struct srp_internal {
struct scsi_transport_template t;
@ -54,6 +57,36 @@ struct srp_internal {
#define dev_to_rport(d) container_of(d, struct srp_rport, dev)
#define transport_class_to_srp_rport(dev) dev_to_rport((dev)->parent)
static inline struct Scsi_Host *rport_to_shost(struct srp_rport *r)
{
return dev_to_shost(r->dev.parent);
}
/**
* srp_tmo_valid() - check timeout combination validity
*
* The combination of the timeout parameters must be such that SCSI commands
* are finished in a reasonable time. Hence do not allow the fast I/O fail
* timeout to exceed SCSI_DEVICE_BLOCK_MAX_TIMEOUT. Furthermore, these
* parameters must be such that multipath can detect failed paths timely.
* Hence do not allow all three parameters to be disabled simultaneously.
*/
int srp_tmo_valid(int reconnect_delay, int fast_io_fail_tmo, int dev_loss_tmo)
{
if (reconnect_delay < 0 && fast_io_fail_tmo < 0 && dev_loss_tmo < 0)
return -EINVAL;
if (reconnect_delay == 0)
return -EINVAL;
if (fast_io_fail_tmo > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)
return -EINVAL;
if (dev_loss_tmo >= LONG_MAX / HZ)
return -EINVAL;
if (fast_io_fail_tmo >= 0 && dev_loss_tmo >= 0 &&
fast_io_fail_tmo >= dev_loss_tmo)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL_GPL(srp_tmo_valid);
static int srp_host_setup(struct transport_container *tc, struct device *dev,
struct device *cdev)
@ -134,10 +167,465 @@ static ssize_t store_srp_rport_delete(struct device *dev,
static DEVICE_ATTR(delete, S_IWUSR, NULL, store_srp_rport_delete);
static ssize_t show_srp_rport_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
static const char *const state_name[] = {
[SRP_RPORT_RUNNING] = "running",
[SRP_RPORT_BLOCKED] = "blocked",
[SRP_RPORT_FAIL_FAST] = "fail-fast",
[SRP_RPORT_LOST] = "lost",
};
struct srp_rport *rport = transport_class_to_srp_rport(dev);
enum srp_rport_state state = rport->state;
return sprintf(buf, "%s\n",
(unsigned)state < ARRAY_SIZE(state_name) ?
state_name[state] : "???");
}
static DEVICE_ATTR(state, S_IRUGO, show_srp_rport_state, NULL);
static ssize_t srp_show_tmo(char *buf, int tmo)
{
return tmo >= 0 ? sprintf(buf, "%d\n", tmo) : sprintf(buf, "off\n");
}
static int srp_parse_tmo(int *tmo, const char *buf)
{
int res = 0;
if (strncmp(buf, "off", 3) != 0)
res = kstrtoint(buf, 0, tmo);
else
*tmo = -1;
return res;
}
static ssize_t show_reconnect_delay(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
return srp_show_tmo(buf, rport->reconnect_delay);
}
static ssize_t store_reconnect_delay(struct device *dev,
struct device_attribute *attr,
const char *buf, const size_t count)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
int res, delay;
res = srp_parse_tmo(&delay, buf);
if (res)
goto out;
res = srp_tmo_valid(delay, rport->fast_io_fail_tmo,
rport->dev_loss_tmo);
if (res)
goto out;
if (rport->reconnect_delay <= 0 && delay > 0 &&
rport->state != SRP_RPORT_RUNNING) {
queue_delayed_work(system_long_wq, &rport->reconnect_work,
delay * HZ);
} else if (delay <= 0) {
cancel_delayed_work(&rport->reconnect_work);
}
rport->reconnect_delay = delay;
res = count;
out:
return res;
}
static DEVICE_ATTR(reconnect_delay, S_IRUGO | S_IWUSR, show_reconnect_delay,
store_reconnect_delay);
static ssize_t show_failed_reconnects(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
return sprintf(buf, "%d\n", rport->failed_reconnects);
}
static DEVICE_ATTR(failed_reconnects, S_IRUGO, show_failed_reconnects, NULL);
static ssize_t show_srp_rport_fast_io_fail_tmo(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
return srp_show_tmo(buf, rport->fast_io_fail_tmo);
}
static ssize_t store_srp_rport_fast_io_fail_tmo(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
int res;
int fast_io_fail_tmo;
res = srp_parse_tmo(&fast_io_fail_tmo, buf);
if (res)
goto out;
res = srp_tmo_valid(rport->reconnect_delay, fast_io_fail_tmo,
rport->dev_loss_tmo);
if (res)
goto out;
rport->fast_io_fail_tmo = fast_io_fail_tmo;
res = count;
out:
return res;
}
static DEVICE_ATTR(fast_io_fail_tmo, S_IRUGO | S_IWUSR,
show_srp_rport_fast_io_fail_tmo,
store_srp_rport_fast_io_fail_tmo);
static ssize_t show_srp_rport_dev_loss_tmo(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
return srp_show_tmo(buf, rport->dev_loss_tmo);
}
static ssize_t store_srp_rport_dev_loss_tmo(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct srp_rport *rport = transport_class_to_srp_rport(dev);
int res;
int dev_loss_tmo;
res = srp_parse_tmo(&dev_loss_tmo, buf);
if (res)
goto out;
res = srp_tmo_valid(rport->reconnect_delay, rport->fast_io_fail_tmo,
dev_loss_tmo);
if (res)
goto out;
rport->dev_loss_tmo = dev_loss_tmo;
res = count;
out:
return res;
}
static DEVICE_ATTR(dev_loss_tmo, S_IRUGO | S_IWUSR,
show_srp_rport_dev_loss_tmo,
store_srp_rport_dev_loss_tmo);
static int srp_rport_set_state(struct srp_rport *rport,
enum srp_rport_state new_state)
{
enum srp_rport_state old_state = rport->state;
lockdep_assert_held(&rport->mutex);
switch (new_state) {
case SRP_RPORT_RUNNING:
switch (old_state) {
case SRP_RPORT_LOST:
goto invalid;
default:
break;
}
break;
case SRP_RPORT_BLOCKED:
switch (old_state) {
case SRP_RPORT_RUNNING:
break;
default:
goto invalid;
}
break;
case SRP_RPORT_FAIL_FAST:
switch (old_state) {
case SRP_RPORT_LOST:
goto invalid;
default:
break;
}
break;
case SRP_RPORT_LOST:
break;
}
rport->state = new_state;
return 0;
invalid:
return -EINVAL;
}
/**
* srp_reconnect_work() - reconnect and schedule a new attempt if necessary
*/
static void srp_reconnect_work(struct work_struct *work)
{
struct srp_rport *rport = container_of(to_delayed_work(work),
struct srp_rport, reconnect_work);
struct Scsi_Host *shost = rport_to_shost(rport);
int delay, res;
res = srp_reconnect_rport(rport);
if (res != 0) {
shost_printk(KERN_ERR, shost,
"reconnect attempt %d failed (%d)\n",
++rport->failed_reconnects, res);
delay = rport->reconnect_delay *
min(100, max(1, rport->failed_reconnects - 10));
if (delay > 0)
queue_delayed_work(system_long_wq,
&rport->reconnect_work, delay * HZ);
}
}
static void __rport_fail_io_fast(struct srp_rport *rport)
{
struct Scsi_Host *shost = rport_to_shost(rport);
struct srp_internal *i;
lockdep_assert_held(&rport->mutex);
if (srp_rport_set_state(rport, SRP_RPORT_FAIL_FAST))
return;
scsi_target_unblock(rport->dev.parent, SDEV_TRANSPORT_OFFLINE);
/* Involve the LLD if possible to terminate all I/O on the rport. */
i = to_srp_internal(shost->transportt);
if (i->f->terminate_rport_io)
i->f->terminate_rport_io(rport);
}
/**
* rport_fast_io_fail_timedout() - fast I/O failure timeout handler
*/
static void rport_fast_io_fail_timedout(struct work_struct *work)
{
struct srp_rport *rport = container_of(to_delayed_work(work),
struct srp_rport, fast_io_fail_work);
struct Scsi_Host *shost = rport_to_shost(rport);
pr_info("fast_io_fail_tmo expired for SRP %s / %s.\n",
dev_name(&rport->dev), dev_name(&shost->shost_gendev));
mutex_lock(&rport->mutex);
if (rport->state == SRP_RPORT_BLOCKED)
__rport_fail_io_fast(rport);
mutex_unlock(&rport->mutex);
}
/**
* rport_dev_loss_timedout() - device loss timeout handler
*/
static void rport_dev_loss_timedout(struct work_struct *work)
{
struct srp_rport *rport = container_of(to_delayed_work(work),
struct srp_rport, dev_loss_work);
struct Scsi_Host *shost = rport_to_shost(rport);
struct srp_internal *i = to_srp_internal(shost->transportt);
pr_info("dev_loss_tmo expired for SRP %s / %s.\n",
dev_name(&rport->dev), dev_name(&shost->shost_gendev));
mutex_lock(&rport->mutex);
WARN_ON(srp_rport_set_state(rport, SRP_RPORT_LOST) != 0);
scsi_target_unblock(rport->dev.parent, SDEV_TRANSPORT_OFFLINE);
mutex_unlock(&rport->mutex);
i->f->rport_delete(rport);
}
static void __srp_start_tl_fail_timers(struct srp_rport *rport)
{
struct Scsi_Host *shost = rport_to_shost(rport);
int delay, fast_io_fail_tmo, dev_loss_tmo;
lockdep_assert_held(&rport->mutex);
if (!rport->deleted) {
delay = rport->reconnect_delay;
fast_io_fail_tmo = rport->fast_io_fail_tmo;
dev_loss_tmo = rport->dev_loss_tmo;
pr_debug("%s current state: %d\n",
dev_name(&shost->shost_gendev), rport->state);
if (delay > 0)
queue_delayed_work(system_long_wq,
&rport->reconnect_work,
1UL * delay * HZ);
if (fast_io_fail_tmo >= 0 &&
srp_rport_set_state(rport, SRP_RPORT_BLOCKED) == 0) {
pr_debug("%s new state: %d\n",
dev_name(&shost->shost_gendev),
rport->state);
scsi_target_block(&shost->shost_gendev);
queue_delayed_work(system_long_wq,
&rport->fast_io_fail_work,
1UL * fast_io_fail_tmo * HZ);
}
if (dev_loss_tmo >= 0)
queue_delayed_work(system_long_wq,
&rport->dev_loss_work,
1UL * dev_loss_tmo * HZ);
} else {
pr_debug("%s has already been deleted\n",
dev_name(&shost->shost_gendev));
srp_rport_set_state(rport, SRP_RPORT_FAIL_FAST);
scsi_target_unblock(&shost->shost_gendev,
SDEV_TRANSPORT_OFFLINE);
}
}
/**
* srp_start_tl_fail_timers() - start the transport layer failure timers
*
* Start the transport layer fast I/O failure and device loss timers. Do not
* modify a timer that was already started.
*/
void srp_start_tl_fail_timers(struct srp_rport *rport)
{
mutex_lock(&rport->mutex);
__srp_start_tl_fail_timers(rport);
mutex_unlock(&rport->mutex);
}
EXPORT_SYMBOL(srp_start_tl_fail_timers);
/**
* scsi_request_fn_active() - number of kernel threads inside scsi_request_fn()
*/
static int scsi_request_fn_active(struct Scsi_Host *shost)
{
struct scsi_device *sdev;
struct request_queue *q;
int request_fn_active = 0;
shost_for_each_device(sdev, shost) {
q = sdev->request_queue;
spin_lock_irq(q->queue_lock);
request_fn_active += q->request_fn_active;
spin_unlock_irq(q->queue_lock);
}
return request_fn_active;
}
/**
* srp_reconnect_rport() - reconnect to an SRP target port
*
* Blocks SCSI command queueing before invoking reconnect() such that
* queuecommand() won't be invoked concurrently with reconnect() from outside
* the SCSI EH. This is important since a reconnect() implementation may
* reallocate resources needed by queuecommand().
*
* Notes:
* - This function neither waits until outstanding requests have finished nor
* tries to abort these. It is the responsibility of the reconnect()
* function to finish outstanding commands before reconnecting to the target
* port.
* - It is the responsibility of the caller to ensure that the resources
* reallocated by the reconnect() function won't be used while this function
* is in progress. One possible strategy is to invoke this function from
* the context of the SCSI EH thread only. Another possible strategy is to
* lock the rport mutex inside each SCSI LLD callback that can be invoked by
* the SCSI EH (the scsi_host_template.eh_*() functions and also the
* scsi_host_template.queuecommand() function).
*/
int srp_reconnect_rport(struct srp_rport *rport)
{
struct Scsi_Host *shost = rport_to_shost(rport);
struct srp_internal *i = to_srp_internal(shost->transportt);
struct scsi_device *sdev;
int res;
pr_debug("SCSI host %s\n", dev_name(&shost->shost_gendev));
res = mutex_lock_interruptible(&rport->mutex);
if (res)
goto out;
scsi_target_block(&shost->shost_gendev);
while (scsi_request_fn_active(shost))
msleep(20);
res = i->f->reconnect(rport);
pr_debug("%s (state %d): transport.reconnect() returned %d\n",
dev_name(&shost->shost_gendev), rport->state, res);
if (res == 0) {
cancel_delayed_work(&rport->fast_io_fail_work);
cancel_delayed_work(&rport->dev_loss_work);
rport->failed_reconnects = 0;
srp_rport_set_state(rport, SRP_RPORT_RUNNING);
scsi_target_unblock(&shost->shost_gendev, SDEV_RUNNING);
/*
* If the SCSI error handler has offlined one or more devices,
* invoking scsi_target_unblock() won't change the state of
* these devices into running so do that explicitly.
*/
spin_lock_irq(shost->host_lock);
__shost_for_each_device(sdev, shost)
if (sdev->sdev_state == SDEV_OFFLINE)
sdev->sdev_state = SDEV_RUNNING;
spin_unlock_irq(shost->host_lock);
} else if (rport->state == SRP_RPORT_RUNNING) {
/*
* srp_reconnect_rport() was invoked with fast_io_fail
* off. Mark the port as failed and start the TL failure
* timers if these had not yet been started.
*/
__rport_fail_io_fast(rport);
scsi_target_unblock(&shost->shost_gendev,
SDEV_TRANSPORT_OFFLINE);
__srp_start_tl_fail_timers(rport);
} else if (rport->state != SRP_RPORT_BLOCKED) {
scsi_target_unblock(&shost->shost_gendev,
SDEV_TRANSPORT_OFFLINE);
}
mutex_unlock(&rport->mutex);
out:
return res;
}
EXPORT_SYMBOL(srp_reconnect_rport);
/**
* srp_timed_out() - SRP transport intercept of the SCSI timeout EH
*
* If a timeout occurs while an rport is in the blocked state, ask the SCSI
* EH to continue waiting (BLK_EH_RESET_TIMER). Otherwise let the SCSI core
* handle the timeout (BLK_EH_NOT_HANDLED).
*
* Note: This function is called from soft-IRQ context and with the request
* queue lock held.
*/
static enum blk_eh_timer_return srp_timed_out(struct scsi_cmnd *scmd)
{
struct scsi_device *sdev = scmd->device;
struct Scsi_Host *shost = sdev->host;
struct srp_internal *i = to_srp_internal(shost->transportt);
pr_debug("timeout for sdev %s\n", dev_name(&sdev->sdev_gendev));
return i->f->reset_timer_if_blocked && scsi_device_blocked(sdev) ?
BLK_EH_RESET_TIMER : BLK_EH_NOT_HANDLED;
}
static void srp_rport_release(struct device *dev)
{
struct srp_rport *rport = dev_to_rport(dev);
cancel_delayed_work_sync(&rport->reconnect_work);
cancel_delayed_work_sync(&rport->fast_io_fail_work);
cancel_delayed_work_sync(&rport->dev_loss_work);
put_device(dev->parent);
kfree(rport);
}
@ -184,6 +672,24 @@ static int srp_host_match(struct attribute_container *cont, struct device *dev)
return &i->t.host_attrs.ac == cont;
}
/**
* srp_rport_get() - increment rport reference count
*/
void srp_rport_get(struct srp_rport *rport)
{
get_device(&rport->dev);
}
EXPORT_SYMBOL(srp_rport_get);
/**
* srp_rport_put() - decrement rport reference count
*/
void srp_rport_put(struct srp_rport *rport)
{
put_device(&rport->dev);
}
EXPORT_SYMBOL(srp_rport_put);
/**
* srp_rport_add - add a SRP remote port to the device hierarchy
* @shost: scsi host the remote port is connected to.
@ -196,12 +702,15 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
{
struct srp_rport *rport;
struct device *parent = &shost->shost_gendev;
struct srp_internal *i = to_srp_internal(shost->transportt);
int id, ret;
rport = kzalloc(sizeof(*rport), GFP_KERNEL);
if (!rport)
return ERR_PTR(-ENOMEM);
mutex_init(&rport->mutex);
device_initialize(&rport->dev);
rport->dev.parent = get_device(parent);
@ -210,6 +719,17 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
memcpy(rport->port_id, ids->port_id, sizeof(rport->port_id));
rport->roles = ids->roles;
if (i->f->reconnect)
rport->reconnect_delay = i->f->reconnect_delay ?
*i->f->reconnect_delay : 10;
INIT_DELAYED_WORK(&rport->reconnect_work, srp_reconnect_work);
rport->fast_io_fail_tmo = i->f->fast_io_fail_tmo ?
*i->f->fast_io_fail_tmo : 15;
rport->dev_loss_tmo = i->f->dev_loss_tmo ? *i->f->dev_loss_tmo : 60;
INIT_DELAYED_WORK(&rport->fast_io_fail_work,
rport_fast_io_fail_timedout);
INIT_DELAYED_WORK(&rport->dev_loss_work, rport_dev_loss_timedout);
id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id);
dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id);
@ -259,6 +779,13 @@ void srp_rport_del(struct srp_rport *rport)
transport_remove_device(dev);
device_del(dev);
transport_destroy_device(dev);
mutex_lock(&rport->mutex);
if (rport->state == SRP_RPORT_BLOCKED)
__rport_fail_io_fast(rport);
rport->deleted = true;
mutex_unlock(&rport->mutex);
put_device(dev);
}
EXPORT_SYMBOL_GPL(srp_rport_del);
@ -310,6 +837,8 @@ srp_attach_transport(struct srp_function_template *ft)
if (!i)
return NULL;
i->t.eh_timed_out = srp_timed_out;
i->t.tsk_mgmt_response = srp_tsk_mgmt_response;
i->t.it_nexus_response = srp_it_nexus_response;
@ -327,6 +856,15 @@ srp_attach_transport(struct srp_function_template *ft)
count = 0;
i->rport_attrs[count++] = &dev_attr_port_id;
i->rport_attrs[count++] = &dev_attr_roles;
if (ft->has_rport_state) {
i->rport_attrs[count++] = &dev_attr_state;
i->rport_attrs[count++] = &dev_attr_fast_io_fail_tmo;
i->rport_attrs[count++] = &dev_attr_dev_loss_tmo;
}
if (ft->reconnect) {
i->rport_attrs[count++] = &dev_attr_reconnect_delay;
i->rport_attrs[count++] = &dev_attr_failed_reconnects;
}
if (ft->rport_delete)
i->rport_attrs[count++] = &dev_attr_delete;
i->rport_attrs[count++] = NULL;

13
include/linux/mlx5/device.h
View file

@ -230,6 +230,15 @@ enum {
MLX5_MAX_PAGE_SHIFT = 31
};
enum {
MLX5_ADAPTER_PAGE_SHIFT = 12
};
enum {
MLX5_CAP_OFF_DCT = 41,
MLX5_CAP_OFF_CMDIF_CSUM = 46,
};
struct mlx5_inbox_hdr {
__be16 opcode;
u8 rsvd[4];
@ -319,9 +328,9 @@ struct mlx5_hca_cap {
u8 rsvd25[42];
__be16 log_uar_page_sz;
u8 rsvd26[28];
u8 log_msx_atomic_size_qp;
u8 log_max_atomic_size_qp;
u8 rsvd27[2];
u8 log_msx_atomic_size_dc;
u8 log_max_atomic_size_dc;
u8 rsvd28[76];
};

18
include/linux/mlx5/driver.h
View file

@ -483,6 +483,7 @@ struct mlx5_priv {
struct rb_root page_root;
int fw_pages;
int reg_pages;
struct list_head free_list;
struct mlx5_core_health health;
@ -557,9 +558,11 @@ typedef void (*mlx5_cmd_cbk_t)(int status, void *context);
struct mlx5_cmd_work_ent {
struct mlx5_cmd_msg *in;
struct mlx5_cmd_msg *out;
void *uout;
int uout_size;
mlx5_cmd_cbk_t callback;
void *context;
int idx;
int idx;
struct completion done;
struct mlx5_cmd *cmd;
struct work_struct work;
@ -570,6 +573,7 @@ struct mlx5_cmd_work_ent {
u8 token;
struct timespec ts1;
struct timespec ts2;
u16 op;
};
struct mlx5_pas {
@ -653,6 +657,9 @@ void mlx5_cmd_use_polling(struct mlx5_core_dev *dev);
int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr);
int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
int out_size);
int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size,
void *out, int out_size, mlx5_cmd_cbk_t callback,
void *context);
int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn);
int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn);
int mlx5_alloc_uuars(struct mlx5_core_dev *dev, struct mlx5_uuar_info *uuari);
@ -676,7 +683,9 @@ int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
u16 lwm, int is_srq);
int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
struct mlx5_create_mkey_mbox_in *in, int inlen);
struct mlx5_create_mkey_mbox_in *in, int inlen,
mlx5_cmd_cbk_t callback, void *context,
struct mlx5_create_mkey_mbox_out *out);
int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr);
int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
struct mlx5_query_mkey_mbox_out *out, int outlen);
@ -745,6 +754,11 @@ static inline u32 mlx5_idx_to_mkey(u32 mkey_idx)
return mkey_idx << 8;
}
static inline u8 mlx5_mkey_variant(u32 mkey)
{
return mkey & 0xff;
}
enum {
MLX5_PROF_MASK_QP_SIZE = (u64)1 << 0,
MLX5_PROF_MASK_MR_CACHE = (u64)1 << 1,

20
include/rdma/ib_verbs.h
View file

@ -67,12 +67,14 @@ enum rdma_node_type {
RDMA_NODE_IB_CA = 1,
RDMA_NODE_IB_SWITCH,
RDMA_NODE_IB_ROUTER,
RDMA_NODE_RNIC
RDMA_NODE_RNIC,
RDMA_NODE_USNIC,
};
enum rdma_transport_type {
RDMA_TRANSPORT_IB,
RDMA_TRANSPORT_IWARP
RDMA_TRANSPORT_IWARP,
RDMA_TRANSPORT_USNIC
};
enum rdma_transport_type
@ -1436,6 +1438,7 @@ struct ib_device {
int uverbs_abi_ver;
u64 uverbs_cmd_mask;
u64 uverbs_ex_cmd_mask;
char node_desc[64];
__be64 node_guid;
@ -2384,4 +2387,17 @@ struct ib_flow *ib_create_flow(struct ib_qp *qp,
struct ib_flow_attr *flow_attr, int domain);
int ib_destroy_flow(struct ib_flow *flow_id);
static inline int ib_check_mr_access(int flags)
{
/*
* Local write permission is required if remote write or
* remote atomic permission is also requested.
*/
if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
!(flags & IB_ACCESS_LOCAL_WRITE))
return -EINVAL;
return 0;
}
#endif /* IB_VERBS_H */

83
include/scsi/scsi_transport_srp.h
View file

@ -13,6 +13,27 @@ struct srp_rport_identifiers {
u8 roles;
};
/**
* enum srp_rport_state - SRP transport layer state
* @SRP_RPORT_RUNNING: Transport layer operational.
* @SRP_RPORT_BLOCKED: Transport layer not operational; fast I/O fail timer
* is running and I/O has been blocked.
* @SRP_RPORT_FAIL_FAST: Fast I/O fail timer has expired; fail I/O fast.
* @SRP_RPORT_LOST: Device loss timer has expired; port is being removed.
*/
enum srp_rport_state {
SRP_RPORT_RUNNING,
SRP_RPORT_BLOCKED,
SRP_RPORT_FAIL_FAST,
SRP_RPORT_LOST,
};
/**
* struct srp_rport
* @lld_data: LLD private data.
* @mutex: Protects against concurrent rport reconnect / fast_io_fail /
* dev_loss_tmo activity.
*/
struct srp_rport {
/* for initiator and target drivers */
@ -23,11 +44,43 @@ struct srp_rport {
/* for initiator drivers */
void *lld_data; /* LLD private data */
void *lld_data;
struct mutex mutex;
enum srp_rport_state state;
bool deleted;
int reconnect_delay;
int failed_reconnects;
struct delayed_work reconnect_work;
int fast_io_fail_tmo;
int dev_loss_tmo;
struct delayed_work fast_io_fail_work;
struct delayed_work dev_loss_work;
};
/**
* struct srp_function_template
* @has_rport_state: Whether or not to create the state, fast_io_fail_tmo and
* dev_loss_tmo sysfs attribute for an rport.
* @reset_timer_if_blocked: Whether or srp_timed_out() should reset the command
* timer if the device on which it has been queued is blocked.
* @reconnect_delay: If not NULL, points to the default reconnect_delay value.
* @fast_io_fail_tmo: If not NULL, points to the default fast_io_fail_tmo value.
* @dev_loss_tmo: If not NULL, points to the default dev_loss_tmo value.
* @reconnect: Callback function for reconnecting to the target. See also
* srp_reconnect_rport().
* @terminate_rport_io: Callback function for terminating all outstanding I/O
* requests for an rport.
*/
struct srp_function_template {
/* for initiator drivers */
bool has_rport_state;
bool reset_timer_if_blocked;
int *reconnect_delay;
int *fast_io_fail_tmo;
int *dev_loss_tmo;
int (*reconnect)(struct srp_rport *rport);
void (*terminate_rport_io)(struct srp_rport *rport);
void (*rport_delete)(struct srp_rport *rport);
/* for target drivers */
int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
@ -38,10 +91,36 @@ extern struct scsi_transport_template *
srp_attach_transport(struct srp_function_template *);
extern void srp_release_transport(struct scsi_transport_template *);
extern void srp_rport_get(struct srp_rport *rport);
extern void srp_rport_put(struct srp_rport *rport);
extern struct srp_rport *srp_rport_add(struct Scsi_Host *,
struct srp_rport_identifiers *);
extern void srp_rport_del(struct srp_rport *);
extern int srp_tmo_valid(int reconnect_delay, int fast_io_fail_tmo,
int dev_loss_tmo);
extern int srp_reconnect_rport(struct srp_rport *rport);
extern void srp_start_tl_fail_timers(struct srp_rport *rport);
extern void srp_remove_host(struct Scsi_Host *);
/**
* srp_chkready() - evaluate the transport layer state before I/O
*
* Returns a SCSI result code that can be returned by the LLD queuecommand()
* implementation. The role of this function is similar to that of
* fc_remote_port_chkready().
*/
static inline int srp_chkready(struct srp_rport *rport)
{
switch (rport->state) {
case SRP_RPORT_RUNNING:
case SRP_RPORT_BLOCKED:
default:
return 0;
case SRP_RPORT_FAIL_FAST:
return DID_TRANSPORT_FAILFAST << 16;
case SRP_RPORT_LOST:
return DID_NO_CONNECT << 16;
}
}
#endif

119
include/uapi/rdma/ib_user_verbs.h
View file

@ -87,10 +87,11 @@ enum {
IB_USER_VERBS_CMD_CLOSE_XRCD,
IB_USER_VERBS_CMD_CREATE_XSRQ,
IB_USER_VERBS_CMD_OPEN_QP,
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
IB_USER_VERBS_CMD_CREATE_FLOW = IB_USER_VERBS_CMD_THRESHOLD,
IB_USER_VERBS_CMD_DESTROY_FLOW
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
};
enum {
IB_USER_VERBS_EX_CMD_CREATE_FLOW = IB_USER_VERBS_CMD_THRESHOLD,
IB_USER_VERBS_EX_CMD_DESTROY_FLOW
};
/*
@ -122,22 +123,24 @@ struct ib_uverbs_comp_event_desc {
* the rest of the command struct based on these value.
*/
#define IB_USER_VERBS_CMD_COMMAND_MASK 0xff
#define IB_USER_VERBS_CMD_FLAGS_MASK 0xff000000u
#define IB_USER_VERBS_CMD_FLAGS_SHIFT 24
#define IB_USER_VERBS_CMD_FLAG_EXTENDED 0x80
struct ib_uverbs_cmd_hdr {
__u32 command;
__u16 in_words;
__u16 out_words;
};
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
struct ib_uverbs_cmd_hdr_ex {
__u32 command;
__u16 in_words;
__u16 out_words;
struct ib_uverbs_ex_cmd_hdr {
__u64 response;
__u16 provider_in_words;
__u16 provider_out_words;
__u32 cmd_hdr_reserved;
};
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
struct ib_uverbs_get_context {
__u64 response;
@ -700,62 +703,71 @@ struct ib_uverbs_detach_mcast {
__u64 driver_data[0];
};
#ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING
struct ib_kern_eth_filter {
struct ib_uverbs_flow_spec_hdr {
__u32 type;
__u16 size;
__u16 reserved;
/* followed by flow_spec */
__u64 flow_spec_data[0];
};
struct ib_uverbs_flow_eth_filter {
__u8 dst_mac[6];
__u8 src_mac[6];
__be16 ether_type;
__be16 vlan_tag;
};
struct ib_kern_spec_eth {
__u32 type;
__u16 size;
__u16 reserved;
struct ib_kern_eth_filter val;
struct ib_kern_eth_filter mask;
};
struct ib_kern_ipv4_filter {
__be32 src_ip;
__be32 dst_ip;
};
struct ib_kern_spec_ipv4 {
__u32 type;
__u16 size;
__u16 reserved;
struct ib_kern_ipv4_filter val;
struct ib_kern_ipv4_filter mask;
};
struct ib_kern_tcp_udp_filter {
__be16 dst_port;
__be16 src_port;
};
struct ib_kern_spec_tcp_udp {
__u32 type;
__u16 size;
__u16 reserved;
struct ib_kern_tcp_udp_filter val;
struct ib_kern_tcp_udp_filter mask;
};
struct ib_kern_spec {
struct ib_uverbs_flow_spec_eth {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
struct ib_kern_spec_eth eth;
struct ib_kern_spec_ipv4 ipv4;
struct ib_kern_spec_tcp_udp tcp_udp;
};
struct ib_uverbs_flow_eth_filter val;
struct ib_uverbs_flow_eth_filter mask;
};
struct ib_kern_flow_attr {
struct ib_uverbs_flow_ipv4_filter {
__be32 src_ip;
__be32 dst_ip;
};
struct ib_uverbs_flow_spec_ipv4 {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
struct ib_uverbs_flow_ipv4_filter val;
struct ib_uverbs_flow_ipv4_filter mask;
};
struct ib_uverbs_flow_tcp_udp_filter {
__be16 dst_port;
__be16 src_port;
};
struct ib_uverbs_flow_spec_tcp_udp {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
struct ib_uverbs_flow_tcp_udp_filter val;
struct ib_uverbs_flow_tcp_udp_filter mask;
};
struct ib_uverbs_flow_attr {
__u32 type;
__u16 size;
__u16 priority;
@ -767,13 +779,13 @@ struct ib_kern_flow_attr {
* struct ib_flow_spec_xxx
* struct ib_flow_spec_yyy
*/
struct ib_uverbs_flow_spec_hdr flow_specs[0];
};
struct ib_uverbs_create_flow {
__u32 comp_mask;
__u64 response;
__u32 qp_handle;
struct ib_kern_flow_attr flow_attr;
struct ib_uverbs_flow_attr flow_attr;
};
struct ib_uverbs_create_flow_resp {
@ -785,7 +797,6 @@ struct ib_uverbs_destroy_flow {
__u32 comp_mask;
__u32 flow_handle;
};
#endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */
struct ib_uverbs_create_srq {
__u64 response;