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iwcm: common code for port mapper

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moved port mapper related code from drivers into common code

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Tatyana E. Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Faisal Latif 2016-02-26 09:18:00 -06:00 committed by Doug Ledford
parent fc77dbd34c
commit b493d91d33
4 changed files with 172 additions and 30 deletions
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170
drivers/infiniband/core/iwcm.c
View File

@ -50,6 +50,8 @@
#include <rdma/iw_cm.h>
#include <rdma/ib_addr.h>
#include <rdma/iw_portmap.h>
#include <rdma/rdma_netlink.h>
#include "iwcm.h"
@ -57,6 +59,16 @@ MODULE_AUTHOR("Tom Tucker");
MODULE_DESCRIPTION("iWARP CM");
MODULE_LICENSE("Dual BSD/GPL");
static struct ibnl_client_cbs iwcm_nl_cb_table[] = {
[RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb},
[RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb},
[RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb},
[RDMA_NL_IWPM_REMOTE_INFO] = {.dump = iwpm_remote_info_cb},
[RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb},
[RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb},
[RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb}
};
static struct workqueue_struct *iwcm_wq;
struct iwcm_work {
struct work_struct work;
@ -402,6 +414,11 @@ static void destroy_cm_id(struct iw_cm_id *cm_id)
}
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
if (cm_id->mapped) {
iwpm_remove_mapinfo(&cm_id->local_addr, &cm_id->m_local_addr);
iwpm_remove_mapping(&cm_id->local_addr, RDMA_NL_IWCM);
}
(void)iwcm_deref_id(cm_id_priv);
}
@ -426,6 +443,97 @@ void iw_destroy_cm_id(struct iw_cm_id *cm_id)
}
EXPORT_SYMBOL(iw_destroy_cm_id);
/**
* iw_cm_check_wildcard - If IP address is 0 then use original
* @pm_addr: sockaddr containing the ip to check for wildcard
* @cm_addr: sockaddr containing the actual IP address
* @cm_outaddr: sockaddr to set IP addr which leaving port
*
* Checks the pm_addr for wildcard and then sets cm_outaddr's
* IP to the actual (cm_addr).
*/
static void iw_cm_check_wildcard(struct sockaddr_storage *pm_addr,
struct sockaddr_storage *cm_addr,
struct sockaddr_storage *cm_outaddr)
{
if (pm_addr->ss_family == AF_INET) {
struct sockaddr_in *pm4_addr = (struct sockaddr_in *)pm_addr;
if (pm4_addr->sin_addr.s_addr == INADDR_ANY) {
struct sockaddr_in *cm4_addr =
(struct sockaddr_in *)cm_addr;
struct sockaddr_in *cm4_outaddr =
(struct sockaddr_in *)cm_outaddr;
cm4_outaddr->sin_addr = cm4_addr->sin_addr;
}
} else {
struct sockaddr_in6 *pm6_addr = (struct sockaddr_in6 *)pm_addr;
if (ipv6_addr_type(&pm6_addr->sin6_addr) == IPV6_ADDR_ANY) {
struct sockaddr_in6 *cm6_addr =
(struct sockaddr_in6 *)cm_addr;
struct sockaddr_in6 *cm6_outaddr =
(struct sockaddr_in6 *)cm_outaddr;
cm6_outaddr->sin6_addr = cm6_addr->sin6_addr;
}
}
}
/**
* iw_cm_map - Use portmapper to map the ports
* @cm_id: connection manager pointer
* @active: Indicates the active side when true
* returns nonzero for error only if iwpm_create_mapinfo() fails
*
* Tries to add a mapping for a port using the Portmapper. If
* successful in mapping the IP/Port it will check the remote
* mapped IP address for a wildcard IP address and replace the
* zero IP address with the remote_addr.
*/
static int iw_cm_map(struct iw_cm_id *cm_id, bool active)
{
struct iwpm_dev_data pm_reg_msg;
struct iwpm_sa_data pm_msg;
int status;
cm_id->m_local_addr = cm_id->local_addr;
cm_id->m_remote_addr = cm_id->remote_addr;
memcpy(pm_reg_msg.dev_name, cm_id->device->name,
sizeof(pm_reg_msg.dev_name));
memcpy(pm_reg_msg.if_name, cm_id->device->iwcm->ifname,
sizeof(pm_reg_msg.if_name));
if (iwpm_register_pid(&pm_reg_msg, RDMA_NL_IWCM) ||
!iwpm_valid_pid())
return 0;
cm_id->mapped = true;
pm_msg.loc_addr = cm_id->local_addr;
pm_msg.rem_addr = cm_id->remote_addr;
if (active)
status = iwpm_add_and_query_mapping(&pm_msg,
RDMA_NL_IWCM);
else
status = iwpm_add_mapping(&pm_msg, RDMA_NL_IWCM);
if (!status) {
cm_id->m_local_addr = pm_msg.mapped_loc_addr;
if (active) {
cm_id->m_remote_addr = pm_msg.mapped_rem_addr;
iw_cm_check_wildcard(&pm_msg.mapped_rem_addr,
&cm_id->remote_addr,
&cm_id->m_remote_addr);
}
}
return iwpm_create_mapinfo(&cm_id->local_addr,
&cm_id->m_local_addr,
RDMA_NL_IWCM);
}
/*
* CM_ID <-- LISTEN
*
@ -452,6 +560,8 @@ int iw_cm_listen(struct iw_cm_id *cm_id, int backlog)
case IW_CM_STATE_IDLE:
cm_id_priv->state = IW_CM_STATE_LISTEN;
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
ret = iw_cm_map(cm_id, false);
if (!ret)
ret = cm_id->device->iwcm->create_listen(cm_id, backlog);
if (ret)
cm_id_priv->state = IW_CM_STATE_IDLE;
@ -582,39 +692,37 @@ int iw_cm_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param)
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id_priv->state != IW_CM_STATE_IDLE) {
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
clear_bit(IWCM_F_CONNECT_WAIT, &cm_id_priv->flags);
wake_up_all(&cm_id_priv->connect_wait);
return -EINVAL;
ret = -EINVAL;
goto err;
}
/* Get the ib_qp given the QPN */
qp = cm_id->device->iwcm->get_qp(cm_id->device, iw_param->qpn);
if (!qp) {
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
clear_bit(IWCM_F_CONNECT_WAIT, &cm_id_priv->flags);
wake_up_all(&cm_id_priv->connect_wait);
return -EINVAL;
ret = -EINVAL;
goto err;
}
cm_id->device->iwcm->add_ref(qp);
cm_id_priv->qp = qp;
cm_id_priv->state = IW_CM_STATE_CONN_SENT;
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
ret = iw_cm_map(cm_id, true);
if (!ret)
ret = cm_id->device->iwcm->connect(cm_id, iw_param);
if (ret) {
if (!ret)
return 0; /* success */
spin_lock_irqsave(&cm_id_priv->lock, flags);
if (cm_id_priv->qp) {
cm_id->device->iwcm->rem_ref(qp);
cm_id_priv->qp = NULL;
}
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
BUG_ON(cm_id_priv->state != IW_CM_STATE_CONN_SENT);
cm_id_priv->state = IW_CM_STATE_IDLE;
err:
spin_unlock_irqrestore(&cm_id_priv->lock, flags);
clear_bit(IWCM_F_CONNECT_WAIT, &cm_id_priv->flags);
wake_up_all(&cm_id_priv->connect_wait);
}
return ret;
}
EXPORT_SYMBOL(iw_cm_connect);
@ -656,8 +764,23 @@ static void cm_conn_req_handler(struct iwcm_id_private *listen_id_priv,
goto out;
cm_id->provider_data = iw_event->provider_data;
cm_id->local_addr = iw_event->local_addr;
cm_id->m_local_addr = iw_event->local_addr;
cm_id->m_remote_addr = iw_event->remote_addr;
cm_id->local_addr = listen_id_priv->id.local_addr;
ret = iwpm_get_remote_info(&listen_id_priv->id.m_local_addr,
&iw_event->remote_addr,
&cm_id->remote_addr,
RDMA_NL_IWCM);
if (ret) {
cm_id->remote_addr = iw_event->remote_addr;
} else {
iw_cm_check_wildcard(&listen_id_priv->id.m_local_addr,
&iw_event->local_addr,
&cm_id->local_addr);
iw_event->local_addr = cm_id->local_addr;
iw_event->remote_addr = cm_id->remote_addr;
}
cm_id_priv = container_of(cm_id, struct iwcm_id_private, id);
cm_id_priv->state = IW_CM_STATE_CONN_RECV;
@ -753,8 +876,10 @@ static int cm_conn_rep_handler(struct iwcm_id_private *cm_id_priv,
clear_bit(IWCM_F_CONNECT_WAIT, &cm_id_priv->flags);
BUG_ON(cm_id_priv->state != IW_CM_STATE_CONN_SENT);
if (iw_event->status == 0) {
cm_id_priv->id.local_addr = iw_event->local_addr;
cm_id_priv->id.remote_addr = iw_event->remote_addr;
cm_id_priv->id.m_local_addr = iw_event->local_addr;
cm_id_priv->id.m_remote_addr = iw_event->remote_addr;
iw_event->local_addr = cm_id_priv->id.local_addr;
iw_event->remote_addr = cm_id_priv->id.remote_addr;
cm_id_priv->state = IW_CM_STATE_ESTABLISHED;
} else {
/* REJECTED or RESET */
@ -1044,6 +1169,17 @@ EXPORT_SYMBOL(iw_cm_init_qp_attr);
static int __init iw_cm_init(void)
{
int ret;
ret = iwpm_init(RDMA_NL_IWCM);
if (ret)
pr_err("iw_cm: couldn't init iwpm\n");
ret = ibnl_add_client(RDMA_NL_IWCM, RDMA_NL_IWPM_NUM_OPS,
iwcm_nl_cb_table);
if (ret)
pr_err("iw_cm: couldn't register netlink callbacks\n");
iwcm_wq = create_singlethread_workqueue("iw_cm_wq");
if (!iwcm_wq)
return -ENOMEM;
@ -1063,6 +1199,8 @@ static void __exit iw_cm_cleanup(void)
{
unregister_net_sysctl_table(iwcm_ctl_table_hdr);
destroy_workqueue(iwcm_wq);
ibnl_remove_client(RDMA_NL_IWCM);
iwpm_exit(RDMA_NL_IWCM);
}
module_init(iw_cm_init);

2
drivers/infiniband/core/iwpm_msg.c
View File

@ -88,7 +88,7 @@ int iwpm_register_pid(struct iwpm_dev_data *pm_msg, u8 nl_client)
ret = ibnl_put_attr(skb, nlh, sizeof(u32), &msg_seq, IWPM_NLA_REG_PID_SEQ);
if (ret)
goto pid_query_error;
ret = ibnl_put_attr(skb, nlh, IWPM_IFNAME_SIZE,
ret = ibnl_put_attr(skb, nlh, IFNAMSIZ,
pm_msg->if_name, IWPM_NLA_REG_IF_NAME);
if (ret)
goto pid_query_error;

6
include/rdma/iw_cm.h
View File

@ -83,8 +83,10 @@ struct iw_cm_id {
iw_cm_handler cm_handler; /* client callback function */
void *context; /* client cb context */
struct ib_device *device;
struct sockaddr_storage local_addr;
struct sockaddr_storage local_addr; /* local addr */
struct sockaddr_storage remote_addr;
struct sockaddr_storage m_local_addr; /* nmapped local addr */
struct sockaddr_storage m_remote_addr; /* nmapped rem addr */
void *provider_data; /* provider private data */
iw_event_handler event_handler; /* cb for provider
events */
@ -92,6 +94,7 @@ struct iw_cm_id {
void (*add_ref)(struct iw_cm_id *);
void (*rem_ref)(struct iw_cm_id *);
u8 tos;
bool mapped;
};
struct iw_cm_conn_param {
@ -123,6 +126,7 @@ struct iw_cm_verbs {
int backlog);
int (*destroy_listen)(struct iw_cm_id *cm_id);
char ifname[IFNAMSIZ];
};
/**

4
include/uapi/rdma/rdma_netlink.h
View File

@ -5,8 +5,8 @@
enum {
RDMA_NL_RDMA_CM = 1,
RDMA_NL_NES,
RDMA_NL_C4IW,
RDMA_NL_IWCM,
RDMA_NL_RSVD,
RDMA_NL_LS, /* RDMA Local Services */
RDMA_NL_NUM_CLIENTS
};