![Leon Romanovsky](/assets/img/avatar_default.png)
The prints after [k|v][m|z|c]alloc() functions are not needed, because in case of failure, allocator will print their internal error prints anyway. Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
755 lines
25 KiB
C
755 lines
25 KiB
C
/*
|
|
* Copyright (c) 2014 Intel Corporation. All rights reserved.
|
|
* Copyright (c) 2014 Chelsio, Inc. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include "iwpm_util.h"
|
|
|
|
static const char iwpm_ulib_name[IWPM_ULIBNAME_SIZE] = "iWarpPortMapperUser";
|
|
static int iwpm_ulib_version = 3;
|
|
static int iwpm_user_pid = IWPM_PID_UNDEFINED;
|
|
static atomic_t echo_nlmsg_seq;
|
|
|
|
int iwpm_valid_pid(void)
|
|
{
|
|
return iwpm_user_pid > 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_valid_pid);
|
|
|
|
/*
|
|
* iwpm_register_pid - Send a netlink query to user space
|
|
* for the iwarp port mapper pid
|
|
*
|
|
* nlmsg attributes:
|
|
* [IWPM_NLA_REG_PID_SEQ]
|
|
* [IWPM_NLA_REG_IF_NAME]
|
|
* [IWPM_NLA_REG_IBDEV_NAME]
|
|
* [IWPM_NLA_REG_ULIB_NAME]
|
|
*/
|
|
int iwpm_register_pid(struct iwpm_dev_data *pm_msg, u8 nl_client)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlmsghdr *nlh;
|
|
u32 msg_seq;
|
|
const char *err_str = "";
|
|
int ret = -EINVAL;
|
|
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
err_str = "Invalid port mapper client";
|
|
goto pid_query_error;
|
|
}
|
|
if (iwpm_check_registration(nl_client, IWPM_REG_VALID) ||
|
|
iwpm_user_pid == IWPM_PID_UNAVAILABLE)
|
|
return 0;
|
|
skb = iwpm_create_nlmsg(RDMA_NL_IWPM_REG_PID, &nlh, nl_client);
|
|
if (!skb) {
|
|
err_str = "Unable to create a nlmsg";
|
|
goto pid_query_error;
|
|
}
|
|
nlh->nlmsg_seq = iwpm_get_nlmsg_seq();
|
|
nlmsg_request = iwpm_get_nlmsg_request(nlh->nlmsg_seq, nl_client, GFP_KERNEL);
|
|
if (!nlmsg_request) {
|
|
err_str = "Unable to allocate netlink request";
|
|
goto pid_query_error;
|
|
}
|
|
msg_seq = atomic_read(&echo_nlmsg_seq);
|
|
|
|
/* fill in the pid request message */
|
|
err_str = "Unable to put attribute of the nlmsg";
|
|
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, IFNAMSIZ,
|
|
pm_msg->if_name, IWPM_NLA_REG_IF_NAME);
|
|
if (ret)
|
|
goto pid_query_error;
|
|
ret = ibnl_put_attr(skb, nlh, IWPM_DEVNAME_SIZE,
|
|
pm_msg->dev_name, IWPM_NLA_REG_IBDEV_NAME);
|
|
if (ret)
|
|
goto pid_query_error;
|
|
ret = ibnl_put_attr(skb, nlh, IWPM_ULIBNAME_SIZE,
|
|
(char *)iwpm_ulib_name, IWPM_NLA_REG_ULIB_NAME);
|
|
if (ret)
|
|
goto pid_query_error;
|
|
|
|
pr_debug("%s: Multicasting a nlmsg (dev = %s ifname = %s iwpm = %s)\n",
|
|
__func__, pm_msg->dev_name, pm_msg->if_name, iwpm_ulib_name);
|
|
|
|
ret = ibnl_multicast(skb, nlh, RDMA_NL_GROUP_IWPM, GFP_KERNEL);
|
|
if (ret) {
|
|
skb = NULL; /* skb is freed in the netlink send-op handling */
|
|
iwpm_user_pid = IWPM_PID_UNAVAILABLE;
|
|
err_str = "Unable to send a nlmsg";
|
|
goto pid_query_error;
|
|
}
|
|
nlmsg_request->req_buffer = pm_msg;
|
|
ret = iwpm_wait_complete_req(nlmsg_request);
|
|
return ret;
|
|
pid_query_error:
|
|
pr_info("%s: %s (client = %d)\n", __func__, err_str, nl_client);
|
|
if (skb)
|
|
dev_kfree_skb(skb);
|
|
if (nlmsg_request)
|
|
iwpm_free_nlmsg_request(&nlmsg_request->kref);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_register_pid);
|
|
|
|
/*
|
|
* iwpm_add_mapping - Send a netlink add mapping message
|
|
* to the port mapper
|
|
* nlmsg attributes:
|
|
* [IWPM_NLA_MANAGE_MAPPING_SEQ]
|
|
* [IWPM_NLA_MANAGE_ADDR]
|
|
*/
|
|
int iwpm_add_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlmsghdr *nlh;
|
|
u32 msg_seq;
|
|
const char *err_str = "";
|
|
int ret = -EINVAL;
|
|
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
err_str = "Invalid port mapper client";
|
|
goto add_mapping_error;
|
|
}
|
|
if (!iwpm_valid_pid())
|
|
return 0;
|
|
if (!iwpm_check_registration(nl_client, IWPM_REG_VALID)) {
|
|
err_str = "Unregistered port mapper client";
|
|
goto add_mapping_error;
|
|
}
|
|
skb = iwpm_create_nlmsg(RDMA_NL_IWPM_ADD_MAPPING, &nlh, nl_client);
|
|
if (!skb) {
|
|
err_str = "Unable to create a nlmsg";
|
|
goto add_mapping_error;
|
|
}
|
|
nlh->nlmsg_seq = iwpm_get_nlmsg_seq();
|
|
nlmsg_request = iwpm_get_nlmsg_request(nlh->nlmsg_seq, nl_client, GFP_KERNEL);
|
|
if (!nlmsg_request) {
|
|
err_str = "Unable to allocate netlink request";
|
|
goto add_mapping_error;
|
|
}
|
|
msg_seq = atomic_read(&echo_nlmsg_seq);
|
|
/* fill in the add mapping message */
|
|
err_str = "Unable to put attribute of the nlmsg";
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(u32), &msg_seq,
|
|
IWPM_NLA_MANAGE_MAPPING_SEQ);
|
|
if (ret)
|
|
goto add_mapping_error;
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(struct sockaddr_storage),
|
|
&pm_msg->loc_addr, IWPM_NLA_MANAGE_ADDR);
|
|
if (ret)
|
|
goto add_mapping_error;
|
|
nlmsg_request->req_buffer = pm_msg;
|
|
|
|
ret = ibnl_unicast(skb, nlh, iwpm_user_pid);
|
|
if (ret) {
|
|
skb = NULL; /* skb is freed in the netlink send-op handling */
|
|
iwpm_user_pid = IWPM_PID_UNDEFINED;
|
|
err_str = "Unable to send a nlmsg";
|
|
goto add_mapping_error;
|
|
}
|
|
ret = iwpm_wait_complete_req(nlmsg_request);
|
|
return ret;
|
|
add_mapping_error:
|
|
pr_info("%s: %s (client = %d)\n", __func__, err_str, nl_client);
|
|
if (skb)
|
|
dev_kfree_skb(skb);
|
|
if (nlmsg_request)
|
|
iwpm_free_nlmsg_request(&nlmsg_request->kref);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_add_mapping);
|
|
|
|
/*
|
|
* iwpm_add_and_query_mapping - Send a netlink add and query
|
|
* mapping message to the port mapper
|
|
* nlmsg attributes:
|
|
* [IWPM_NLA_QUERY_MAPPING_SEQ]
|
|
* [IWPM_NLA_QUERY_LOCAL_ADDR]
|
|
* [IWPM_NLA_QUERY_REMOTE_ADDR]
|
|
*/
|
|
int iwpm_add_and_query_mapping(struct iwpm_sa_data *pm_msg, u8 nl_client)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlmsghdr *nlh;
|
|
u32 msg_seq;
|
|
const char *err_str = "";
|
|
int ret = -EINVAL;
|
|
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
err_str = "Invalid port mapper client";
|
|
goto query_mapping_error;
|
|
}
|
|
if (!iwpm_valid_pid())
|
|
return 0;
|
|
if (!iwpm_check_registration(nl_client, IWPM_REG_VALID)) {
|
|
err_str = "Unregistered port mapper client";
|
|
goto query_mapping_error;
|
|
}
|
|
ret = -ENOMEM;
|
|
skb = iwpm_create_nlmsg(RDMA_NL_IWPM_QUERY_MAPPING, &nlh, nl_client);
|
|
if (!skb) {
|
|
err_str = "Unable to create a nlmsg";
|
|
goto query_mapping_error;
|
|
}
|
|
nlh->nlmsg_seq = iwpm_get_nlmsg_seq();
|
|
nlmsg_request = iwpm_get_nlmsg_request(nlh->nlmsg_seq,
|
|
nl_client, GFP_KERNEL);
|
|
if (!nlmsg_request) {
|
|
err_str = "Unable to allocate netlink request";
|
|
goto query_mapping_error;
|
|
}
|
|
msg_seq = atomic_read(&echo_nlmsg_seq);
|
|
|
|
/* fill in the query message */
|
|
err_str = "Unable to put attribute of the nlmsg";
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(u32), &msg_seq,
|
|
IWPM_NLA_QUERY_MAPPING_SEQ);
|
|
if (ret)
|
|
goto query_mapping_error;
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(struct sockaddr_storage),
|
|
&pm_msg->loc_addr, IWPM_NLA_QUERY_LOCAL_ADDR);
|
|
if (ret)
|
|
goto query_mapping_error;
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(struct sockaddr_storage),
|
|
&pm_msg->rem_addr, IWPM_NLA_QUERY_REMOTE_ADDR);
|
|
if (ret)
|
|
goto query_mapping_error;
|
|
nlmsg_request->req_buffer = pm_msg;
|
|
|
|
ret = ibnl_unicast(skb, nlh, iwpm_user_pid);
|
|
if (ret) {
|
|
skb = NULL; /* skb is freed in the netlink send-op handling */
|
|
err_str = "Unable to send a nlmsg";
|
|
goto query_mapping_error;
|
|
}
|
|
ret = iwpm_wait_complete_req(nlmsg_request);
|
|
return ret;
|
|
query_mapping_error:
|
|
pr_info("%s: %s (client = %d)\n", __func__, err_str, nl_client);
|
|
if (skb)
|
|
dev_kfree_skb(skb);
|
|
if (nlmsg_request)
|
|
iwpm_free_nlmsg_request(&nlmsg_request->kref);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_add_and_query_mapping);
|
|
|
|
/*
|
|
* iwpm_remove_mapping - Send a netlink remove mapping message
|
|
* to the port mapper
|
|
* nlmsg attributes:
|
|
* [IWPM_NLA_MANAGE_MAPPING_SEQ]
|
|
* [IWPM_NLA_MANAGE_ADDR]
|
|
*/
|
|
int iwpm_remove_mapping(struct sockaddr_storage *local_addr, u8 nl_client)
|
|
{
|
|
struct sk_buff *skb = NULL;
|
|
struct nlmsghdr *nlh;
|
|
u32 msg_seq;
|
|
const char *err_str = "";
|
|
int ret = -EINVAL;
|
|
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
err_str = "Invalid port mapper client";
|
|
goto remove_mapping_error;
|
|
}
|
|
if (!iwpm_valid_pid())
|
|
return 0;
|
|
if (iwpm_check_registration(nl_client, IWPM_REG_UNDEF)) {
|
|
err_str = "Unregistered port mapper client";
|
|
goto remove_mapping_error;
|
|
}
|
|
skb = iwpm_create_nlmsg(RDMA_NL_IWPM_REMOVE_MAPPING, &nlh, nl_client);
|
|
if (!skb) {
|
|
ret = -ENOMEM;
|
|
err_str = "Unable to create a nlmsg";
|
|
goto remove_mapping_error;
|
|
}
|
|
msg_seq = atomic_read(&echo_nlmsg_seq);
|
|
nlh->nlmsg_seq = iwpm_get_nlmsg_seq();
|
|
err_str = "Unable to put attribute of the nlmsg";
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(u32), &msg_seq,
|
|
IWPM_NLA_MANAGE_MAPPING_SEQ);
|
|
if (ret)
|
|
goto remove_mapping_error;
|
|
ret = ibnl_put_attr(skb, nlh, sizeof(struct sockaddr_storage),
|
|
local_addr, IWPM_NLA_MANAGE_ADDR);
|
|
if (ret)
|
|
goto remove_mapping_error;
|
|
|
|
ret = ibnl_unicast(skb, nlh, iwpm_user_pid);
|
|
if (ret) {
|
|
skb = NULL; /* skb is freed in the netlink send-op handling */
|
|
iwpm_user_pid = IWPM_PID_UNDEFINED;
|
|
err_str = "Unable to send a nlmsg";
|
|
goto remove_mapping_error;
|
|
}
|
|
iwpm_print_sockaddr(local_addr,
|
|
"remove_mapping: Local sockaddr:");
|
|
return 0;
|
|
remove_mapping_error:
|
|
pr_info("%s: %s (client = %d)\n", __func__, err_str, nl_client);
|
|
if (skb)
|
|
dev_kfree_skb_any(skb);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_remove_mapping);
|
|
|
|
/* netlink attribute policy for the received response to register pid request */
|
|
static const struct nla_policy resp_reg_policy[IWPM_NLA_RREG_PID_MAX] = {
|
|
[IWPM_NLA_RREG_PID_SEQ] = { .type = NLA_U32 },
|
|
[IWPM_NLA_RREG_IBDEV_NAME] = { .type = NLA_STRING,
|
|
.len = IWPM_DEVNAME_SIZE - 1 },
|
|
[IWPM_NLA_RREG_ULIB_NAME] = { .type = NLA_STRING,
|
|
.len = IWPM_ULIBNAME_SIZE - 1 },
|
|
[IWPM_NLA_RREG_ULIB_VER] = { .type = NLA_U16 },
|
|
[IWPM_NLA_RREG_PID_ERR] = { .type = NLA_U16 }
|
|
};
|
|
|
|
/*
|
|
* iwpm_register_pid_cb - Process a port mapper response to
|
|
* iwpm_register_pid()
|
|
*/
|
|
int iwpm_register_pid_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlattr *nltb[IWPM_NLA_RREG_PID_MAX];
|
|
struct iwpm_dev_data *pm_msg;
|
|
char *dev_name, *iwpm_name;
|
|
u32 msg_seq;
|
|
u8 nl_client;
|
|
u16 iwpm_version;
|
|
const char *msg_type = "Register Pid response";
|
|
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_RREG_PID_MAX,
|
|
resp_reg_policy, nltb, msg_type))
|
|
return -EINVAL;
|
|
|
|
msg_seq = nla_get_u32(nltb[IWPM_NLA_RREG_PID_SEQ]);
|
|
nlmsg_request = iwpm_find_nlmsg_request(msg_seq);
|
|
if (!nlmsg_request) {
|
|
pr_info("%s: Could not find a matching request (seq = %u)\n",
|
|
__func__, msg_seq);
|
|
return -EINVAL;
|
|
}
|
|
pm_msg = nlmsg_request->req_buffer;
|
|
nl_client = nlmsg_request->nl_client;
|
|
dev_name = (char *)nla_data(nltb[IWPM_NLA_RREG_IBDEV_NAME]);
|
|
iwpm_name = (char *)nla_data(nltb[IWPM_NLA_RREG_ULIB_NAME]);
|
|
iwpm_version = nla_get_u16(nltb[IWPM_NLA_RREG_ULIB_VER]);
|
|
|
|
/* check device name, ulib name and version */
|
|
if (strcmp(pm_msg->dev_name, dev_name) ||
|
|
strcmp(iwpm_ulib_name, iwpm_name) ||
|
|
iwpm_version != iwpm_ulib_version) {
|
|
|
|
pr_info("%s: Incorrect info (dev = %s name = %s version = %d)\n",
|
|
__func__, dev_name, iwpm_name, iwpm_version);
|
|
nlmsg_request->err_code = IWPM_USER_LIB_INFO_ERR;
|
|
goto register_pid_response_exit;
|
|
}
|
|
iwpm_user_pid = cb->nlh->nlmsg_pid;
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
pr_debug("%s: iWarp Port Mapper (pid = %d) is available!\n",
|
|
__func__, iwpm_user_pid);
|
|
if (iwpm_valid_client(nl_client))
|
|
iwpm_set_registration(nl_client, IWPM_REG_VALID);
|
|
register_pid_response_exit:
|
|
nlmsg_request->request_done = 1;
|
|
/* always for found nlmsg_request */
|
|
kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
|
|
barrier();
|
|
up(&nlmsg_request->sem);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_register_pid_cb);
|
|
|
|
/* netlink attribute policy for the received response to add mapping request */
|
|
static const struct nla_policy resp_add_policy[IWPM_NLA_RMANAGE_MAPPING_MAX] = {
|
|
[IWPM_NLA_MANAGE_MAPPING_SEQ] = { .type = NLA_U32 },
|
|
[IWPM_NLA_MANAGE_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_MANAGE_MAPPED_LOC_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_RMANAGE_MAPPING_ERR] = { .type = NLA_U16 }
|
|
};
|
|
|
|
/*
|
|
* iwpm_add_mapping_cb - Process a port mapper response to
|
|
* iwpm_add_mapping()
|
|
*/
|
|
int iwpm_add_mapping_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct iwpm_sa_data *pm_msg;
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlattr *nltb[IWPM_NLA_RMANAGE_MAPPING_MAX];
|
|
struct sockaddr_storage *local_sockaddr;
|
|
struct sockaddr_storage *mapped_sockaddr;
|
|
const char *msg_type;
|
|
u32 msg_seq;
|
|
|
|
msg_type = "Add Mapping response";
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_RMANAGE_MAPPING_MAX,
|
|
resp_add_policy, nltb, msg_type))
|
|
return -EINVAL;
|
|
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
|
|
msg_seq = nla_get_u32(nltb[IWPM_NLA_MANAGE_MAPPING_SEQ]);
|
|
nlmsg_request = iwpm_find_nlmsg_request(msg_seq);
|
|
if (!nlmsg_request) {
|
|
pr_info("%s: Could not find a matching request (seq = %u)\n",
|
|
__func__, msg_seq);
|
|
return -EINVAL;
|
|
}
|
|
pm_msg = nlmsg_request->req_buffer;
|
|
local_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_MANAGE_ADDR]);
|
|
mapped_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_MANAGE_MAPPED_LOC_ADDR]);
|
|
|
|
if (iwpm_compare_sockaddr(local_sockaddr, &pm_msg->loc_addr)) {
|
|
nlmsg_request->err_code = IWPM_USER_LIB_INFO_ERR;
|
|
goto add_mapping_response_exit;
|
|
}
|
|
if (mapped_sockaddr->ss_family != local_sockaddr->ss_family) {
|
|
pr_info("%s: Sockaddr family doesn't match the requested one\n",
|
|
__func__);
|
|
nlmsg_request->err_code = IWPM_USER_LIB_INFO_ERR;
|
|
goto add_mapping_response_exit;
|
|
}
|
|
memcpy(&pm_msg->mapped_loc_addr, mapped_sockaddr,
|
|
sizeof(*mapped_sockaddr));
|
|
iwpm_print_sockaddr(&pm_msg->loc_addr,
|
|
"add_mapping: Local sockaddr:");
|
|
iwpm_print_sockaddr(&pm_msg->mapped_loc_addr,
|
|
"add_mapping: Mapped local sockaddr:");
|
|
|
|
add_mapping_response_exit:
|
|
nlmsg_request->request_done = 1;
|
|
/* always for found request */
|
|
kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
|
|
barrier();
|
|
up(&nlmsg_request->sem);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_add_mapping_cb);
|
|
|
|
/* netlink attribute policy for the response to add and query mapping request
|
|
* and response with remote address info */
|
|
static const struct nla_policy resp_query_policy[IWPM_NLA_RQUERY_MAPPING_MAX] = {
|
|
[IWPM_NLA_QUERY_MAPPING_SEQ] = { .type = NLA_U32 },
|
|
[IWPM_NLA_QUERY_LOCAL_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_QUERY_REMOTE_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_RQUERY_MAPPED_LOC_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_RQUERY_MAPPED_REM_ADDR] = { .len = sizeof(struct sockaddr_storage) },
|
|
[IWPM_NLA_RQUERY_MAPPING_ERR] = { .type = NLA_U16 }
|
|
};
|
|
|
|
/*
|
|
* iwpm_add_and_query_mapping_cb - Process a port mapper response to
|
|
* iwpm_add_and_query_mapping()
|
|
*/
|
|
int iwpm_add_and_query_mapping_cb(struct sk_buff *skb,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct iwpm_sa_data *pm_msg;
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
struct nlattr *nltb[IWPM_NLA_RQUERY_MAPPING_MAX];
|
|
struct sockaddr_storage *local_sockaddr, *remote_sockaddr;
|
|
struct sockaddr_storage *mapped_loc_sockaddr, *mapped_rem_sockaddr;
|
|
const char *msg_type;
|
|
u32 msg_seq;
|
|
u16 err_code;
|
|
|
|
msg_type = "Query Mapping response";
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_RQUERY_MAPPING_MAX,
|
|
resp_query_policy, nltb, msg_type))
|
|
return -EINVAL;
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
|
|
msg_seq = nla_get_u32(nltb[IWPM_NLA_QUERY_MAPPING_SEQ]);
|
|
nlmsg_request = iwpm_find_nlmsg_request(msg_seq);
|
|
if (!nlmsg_request) {
|
|
pr_info("%s: Could not find a matching request (seq = %u)\n",
|
|
__func__, msg_seq);
|
|
return -EINVAL;
|
|
}
|
|
pm_msg = nlmsg_request->req_buffer;
|
|
local_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_QUERY_LOCAL_ADDR]);
|
|
remote_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_QUERY_REMOTE_ADDR]);
|
|
mapped_loc_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_LOC_ADDR]);
|
|
mapped_rem_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_REM_ADDR]);
|
|
|
|
err_code = nla_get_u16(nltb[IWPM_NLA_RQUERY_MAPPING_ERR]);
|
|
if (err_code == IWPM_REMOTE_QUERY_REJECT) {
|
|
pr_info("%s: Received a Reject (pid = %u, echo seq = %u)\n",
|
|
__func__, cb->nlh->nlmsg_pid, msg_seq);
|
|
nlmsg_request->err_code = IWPM_REMOTE_QUERY_REJECT;
|
|
}
|
|
if (iwpm_compare_sockaddr(local_sockaddr, &pm_msg->loc_addr) ||
|
|
iwpm_compare_sockaddr(remote_sockaddr, &pm_msg->rem_addr)) {
|
|
pr_info("%s: Incorrect local sockaddr\n", __func__);
|
|
nlmsg_request->err_code = IWPM_USER_LIB_INFO_ERR;
|
|
goto query_mapping_response_exit;
|
|
}
|
|
if (mapped_loc_sockaddr->ss_family != local_sockaddr->ss_family ||
|
|
mapped_rem_sockaddr->ss_family != remote_sockaddr->ss_family) {
|
|
pr_info("%s: Sockaddr family doesn't match the requested one\n",
|
|
__func__);
|
|
nlmsg_request->err_code = IWPM_USER_LIB_INFO_ERR;
|
|
goto query_mapping_response_exit;
|
|
}
|
|
memcpy(&pm_msg->mapped_loc_addr, mapped_loc_sockaddr,
|
|
sizeof(*mapped_loc_sockaddr));
|
|
memcpy(&pm_msg->mapped_rem_addr, mapped_rem_sockaddr,
|
|
sizeof(*mapped_rem_sockaddr));
|
|
|
|
iwpm_print_sockaddr(&pm_msg->loc_addr,
|
|
"query_mapping: Local sockaddr:");
|
|
iwpm_print_sockaddr(&pm_msg->mapped_loc_addr,
|
|
"query_mapping: Mapped local sockaddr:");
|
|
iwpm_print_sockaddr(&pm_msg->rem_addr,
|
|
"query_mapping: Remote sockaddr:");
|
|
iwpm_print_sockaddr(&pm_msg->mapped_rem_addr,
|
|
"query_mapping: Mapped remote sockaddr:");
|
|
query_mapping_response_exit:
|
|
nlmsg_request->request_done = 1;
|
|
/* always for found request */
|
|
kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
|
|
barrier();
|
|
up(&nlmsg_request->sem);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_add_and_query_mapping_cb);
|
|
|
|
/*
|
|
* iwpm_remote_info_cb - Process a port mapper message, containing
|
|
* the remote connecting peer address info
|
|
*/
|
|
int iwpm_remote_info_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct nlattr *nltb[IWPM_NLA_RQUERY_MAPPING_MAX];
|
|
struct sockaddr_storage *local_sockaddr, *remote_sockaddr;
|
|
struct sockaddr_storage *mapped_loc_sockaddr, *mapped_rem_sockaddr;
|
|
struct iwpm_remote_info *rem_info;
|
|
const char *msg_type;
|
|
u8 nl_client;
|
|
int ret = -EINVAL;
|
|
|
|
msg_type = "Remote Mapping info";
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_RQUERY_MAPPING_MAX,
|
|
resp_query_policy, nltb, msg_type))
|
|
return ret;
|
|
|
|
nl_client = RDMA_NL_GET_CLIENT(cb->nlh->nlmsg_type);
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
pr_info("%s: Invalid port mapper client = %d\n",
|
|
__func__, nl_client);
|
|
return ret;
|
|
}
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
|
|
local_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_QUERY_LOCAL_ADDR]);
|
|
remote_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_QUERY_REMOTE_ADDR]);
|
|
mapped_loc_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_LOC_ADDR]);
|
|
mapped_rem_sockaddr = (struct sockaddr_storage *)
|
|
nla_data(nltb[IWPM_NLA_RQUERY_MAPPED_REM_ADDR]);
|
|
|
|
if (mapped_loc_sockaddr->ss_family != local_sockaddr->ss_family ||
|
|
mapped_rem_sockaddr->ss_family != remote_sockaddr->ss_family) {
|
|
pr_info("%s: Sockaddr family doesn't match the requested one\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
rem_info = kzalloc(sizeof(struct iwpm_remote_info), GFP_ATOMIC);
|
|
if (!rem_info) {
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
memcpy(&rem_info->mapped_loc_sockaddr, mapped_loc_sockaddr,
|
|
sizeof(struct sockaddr_storage));
|
|
memcpy(&rem_info->remote_sockaddr, remote_sockaddr,
|
|
sizeof(struct sockaddr_storage));
|
|
memcpy(&rem_info->mapped_rem_sockaddr, mapped_rem_sockaddr,
|
|
sizeof(struct sockaddr_storage));
|
|
rem_info->nl_client = nl_client;
|
|
|
|
iwpm_add_remote_info(rem_info);
|
|
|
|
iwpm_print_sockaddr(local_sockaddr,
|
|
"remote_info: Local sockaddr:");
|
|
iwpm_print_sockaddr(mapped_loc_sockaddr,
|
|
"remote_info: Mapped local sockaddr:");
|
|
iwpm_print_sockaddr(remote_sockaddr,
|
|
"remote_info: Remote sockaddr:");
|
|
iwpm_print_sockaddr(mapped_rem_sockaddr,
|
|
"remote_info: Mapped remote sockaddr:");
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_remote_info_cb);
|
|
|
|
/* netlink attribute policy for the received request for mapping info */
|
|
static const struct nla_policy resp_mapinfo_policy[IWPM_NLA_MAPINFO_REQ_MAX] = {
|
|
[IWPM_NLA_MAPINFO_ULIB_NAME] = { .type = NLA_STRING,
|
|
.len = IWPM_ULIBNAME_SIZE - 1 },
|
|
[IWPM_NLA_MAPINFO_ULIB_VER] = { .type = NLA_U16 }
|
|
};
|
|
|
|
/*
|
|
* iwpm_mapping_info_cb - Process a port mapper request for mapping info
|
|
*/
|
|
int iwpm_mapping_info_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct nlattr *nltb[IWPM_NLA_MAPINFO_REQ_MAX];
|
|
const char *msg_type = "Mapping Info response";
|
|
u8 nl_client;
|
|
char *iwpm_name;
|
|
u16 iwpm_version;
|
|
int ret = -EINVAL;
|
|
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_MAPINFO_REQ_MAX,
|
|
resp_mapinfo_policy, nltb, msg_type)) {
|
|
pr_info("%s: Unable to parse nlmsg\n", __func__);
|
|
return ret;
|
|
}
|
|
iwpm_name = (char *)nla_data(nltb[IWPM_NLA_MAPINFO_ULIB_NAME]);
|
|
iwpm_version = nla_get_u16(nltb[IWPM_NLA_MAPINFO_ULIB_VER]);
|
|
if (strcmp(iwpm_ulib_name, iwpm_name) ||
|
|
iwpm_version != iwpm_ulib_version) {
|
|
pr_info("%s: Invalid port mapper name = %s version = %d\n",
|
|
__func__, iwpm_name, iwpm_version);
|
|
return ret;
|
|
}
|
|
nl_client = RDMA_NL_GET_CLIENT(cb->nlh->nlmsg_type);
|
|
if (!iwpm_valid_client(nl_client)) {
|
|
pr_info("%s: Invalid port mapper client = %d\n",
|
|
__func__, nl_client);
|
|
return ret;
|
|
}
|
|
iwpm_set_registration(nl_client, IWPM_REG_INCOMPL);
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
iwpm_user_pid = cb->nlh->nlmsg_pid;
|
|
if (!iwpm_mapinfo_available())
|
|
return 0;
|
|
pr_debug("%s: iWarp Port Mapper (pid = %d) is available!\n",
|
|
__func__, iwpm_user_pid);
|
|
ret = iwpm_send_mapinfo(nl_client, iwpm_user_pid);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_mapping_info_cb);
|
|
|
|
/* netlink attribute policy for the received mapping info ack */
|
|
static const struct nla_policy ack_mapinfo_policy[IWPM_NLA_MAPINFO_NUM_MAX] = {
|
|
[IWPM_NLA_MAPINFO_SEQ] = { .type = NLA_U32 },
|
|
[IWPM_NLA_MAPINFO_SEND_NUM] = { .type = NLA_U32 },
|
|
[IWPM_NLA_MAPINFO_ACK_NUM] = { .type = NLA_U32 }
|
|
};
|
|
|
|
/*
|
|
* iwpm_ack_mapping_info_cb - Process a port mapper ack for
|
|
* the provided mapping info records
|
|
*/
|
|
int iwpm_ack_mapping_info_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct nlattr *nltb[IWPM_NLA_MAPINFO_NUM_MAX];
|
|
u32 mapinfo_send, mapinfo_ack;
|
|
const char *msg_type = "Mapping Info Ack";
|
|
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_MAPINFO_NUM_MAX,
|
|
ack_mapinfo_policy, nltb, msg_type))
|
|
return -EINVAL;
|
|
mapinfo_send = nla_get_u32(nltb[IWPM_NLA_MAPINFO_SEND_NUM]);
|
|
mapinfo_ack = nla_get_u32(nltb[IWPM_NLA_MAPINFO_ACK_NUM]);
|
|
if (mapinfo_ack != mapinfo_send)
|
|
pr_info("%s: Invalid mapinfo number (sent = %u ack-ed = %u)\n",
|
|
__func__, mapinfo_send, mapinfo_ack);
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_ack_mapping_info_cb);
|
|
|
|
/* netlink attribute policy for the received port mapper error message */
|
|
static const struct nla_policy map_error_policy[IWPM_NLA_ERR_MAX] = {
|
|
[IWPM_NLA_ERR_SEQ] = { .type = NLA_U32 },
|
|
[IWPM_NLA_ERR_CODE] = { .type = NLA_U16 },
|
|
};
|
|
|
|
/*
|
|
* iwpm_mapping_error_cb - Process a port mapper error message
|
|
*/
|
|
int iwpm_mapping_error_cb(struct sk_buff *skb, struct netlink_callback *cb)
|
|
{
|
|
struct iwpm_nlmsg_request *nlmsg_request = NULL;
|
|
int nl_client = RDMA_NL_GET_CLIENT(cb->nlh->nlmsg_type);
|
|
struct nlattr *nltb[IWPM_NLA_ERR_MAX];
|
|
u32 msg_seq;
|
|
u16 err_code;
|
|
const char *msg_type = "Mapping Error Msg";
|
|
|
|
if (iwpm_parse_nlmsg(cb, IWPM_NLA_ERR_MAX,
|
|
map_error_policy, nltb, msg_type))
|
|
return -EINVAL;
|
|
|
|
msg_seq = nla_get_u32(nltb[IWPM_NLA_ERR_SEQ]);
|
|
err_code = nla_get_u16(nltb[IWPM_NLA_ERR_CODE]);
|
|
pr_info("%s: Received msg seq = %u err code = %u client = %d\n",
|
|
__func__, msg_seq, err_code, nl_client);
|
|
/* look for nlmsg_request */
|
|
nlmsg_request = iwpm_find_nlmsg_request(msg_seq);
|
|
if (!nlmsg_request) {
|
|
/* not all errors have associated requests */
|
|
pr_debug("Could not find matching req (seq = %u)\n", msg_seq);
|
|
return 0;
|
|
}
|
|
atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
|
|
nlmsg_request->err_code = err_code;
|
|
nlmsg_request->request_done = 1;
|
|
/* always for found request */
|
|
kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
|
|
barrier();
|
|
up(&nlmsg_request->sem);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwpm_mapping_error_cb);
|