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-rw-r--r--drivers/infiniband/core/Makefile2
-rw-r--r--drivers/infiniband/core/cma.c3
-rw-r--r--drivers/infiniband/core/iwpm_msg.c685
-rw-r--r--drivers/infiniband/core/iwpm_util.c607
-rw-r--r--drivers/infiniband/core/iwpm_util.h238
-rw-r--r--drivers/infiniband/core/netlink.c18
-rw-r--r--drivers/infiniband/core/sysfs.c85
-rw-r--r--drivers/infiniband/core/user_mad.c75
8 files changed, 1638 insertions, 75 deletions
diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile
index 3ab3865544b..ffd0af6734a 100644
--- a/drivers/infiniband/core/Makefile
+++ b/drivers/infiniband/core/Makefile
@@ -18,7 +18,7 @@ ib_sa-y := sa_query.o multicast.o
ib_cm-y := cm.o
-iw_cm-y := iwcm.o
+iw_cm-y := iwcm.o iwpm_util.o iwpm_msg.o
rdma_cm-y := cma.o
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 42c3058e6e9..d570030d899 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3607,7 +3607,8 @@ static int cma_get_id_stats(struct sk_buff *skb, struct netlink_callback *cb)
id_stats = ibnl_put_msg(skb, &nlh, cb->nlh->nlmsg_seq,
sizeof *id_stats, RDMA_NL_RDMA_CM,
- RDMA_NL_RDMA_CM_ID_STATS);
+ RDMA_NL_RDMA_CM_ID_STATS,
+ NLM_F_MULTI);
if (!id_stats)
goto out;
diff --git a/drivers/infiniband/core/iwpm_msg.c b/drivers/infiniband/core/iwpm_msg.c
new file mode 100644
index 00000000000..b85ddbc979e
--- /dev/null
+++ b/drivers/infiniband/core/iwpm_msg.c
@@ -0,0 +1,685 @@
+/*
+ * 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[] = "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_registered_client(nl_client))
+ 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, IWPM_IFNAME_SIZE,
+ 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_set_registered(nl_client, 1);
+ 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_registered_client(nl_client)) {
+ err_str = "Unregistered port mapper client";
+ goto add_mapping_error;
+ }
+ if (!iwpm_valid_pid())
+ return 0;
+ 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_registered_client(nl_client)) {
+ err_str = "Unregistered port mapper client";
+ goto query_mapping_error;
+ }
+ if (!iwpm_valid_pid())
+ return 0;
+ 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_registered_client(nl_client)) {
+ err_str = "Unregistered port mapper client";
+ goto remove_mapping_error;
+ }
+ if (!iwpm_valid_pid())
+ return 0;
+ 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_registered(nl_client, 1);
+register_pid_response_exit:
+ nlmsg_request->request_done = 1;
+ /* always for found nlmsg_request */
+ kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
+ barrier();
+ wake_up(&nlmsg_request->waitq);
+ 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();
+ wake_up(&nlmsg_request->waitq);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_add_mapping_cb);
+
+/* netlink attribute policy for the response to add and query mapping request */
+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();
+ wake_up(&nlmsg_request->waitq);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_add_and_query_mapping_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";
+ int iwpm_pid;
+ 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_registered(nl_client, 0);
+ atomic_set(&echo_nlmsg_seq, cb->nlh->nlmsg_seq);
+ if (!iwpm_mapinfo_available())
+ return 0;
+ iwpm_pid = cb->nlh->nlmsg_pid;
+ pr_debug("%s: iWarp Port Mapper (pid = %d) is available!\n",
+ __func__, iwpm_pid);
+ ret = iwpm_send_mapinfo(nl_client, iwpm_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();
+ wake_up(&nlmsg_request->waitq);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_mapping_error_cb);
diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c
new file mode 100644
index 00000000000..69e9f84c160
--- /dev/null
+++ b/drivers/infiniband/core/iwpm_util.c
@@ -0,0 +1,607 @@
+/*
+ * Copyright (c) 2014 Chelsio, Inc. All rights reserved.
+ * Copyright (c) 2014 Intel Corporation. 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"
+
+#define IWPM_HASH_BUCKET_SIZE 512
+#define IWPM_HASH_BUCKET_MASK (IWPM_HASH_BUCKET_SIZE - 1)
+
+static LIST_HEAD(iwpm_nlmsg_req_list);
+static DEFINE_SPINLOCK(iwpm_nlmsg_req_lock);
+
+static struct hlist_head *iwpm_hash_bucket;
+static DEFINE_SPINLOCK(iwpm_mapinfo_lock);
+
+static DEFINE_MUTEX(iwpm_admin_lock);
+static struct iwpm_admin_data iwpm_admin;
+
+int iwpm_init(u8 nl_client)
+{
+ if (iwpm_valid_client(nl_client))
+ return -EINVAL;
+ mutex_lock(&iwpm_admin_lock);
+ if (atomic_read(&iwpm_admin.refcount) == 0) {
+ iwpm_hash_bucket = kzalloc(IWPM_HASH_BUCKET_SIZE *
+ sizeof(struct hlist_head), GFP_KERNEL);
+ if (!iwpm_hash_bucket) {
+ mutex_unlock(&iwpm_admin_lock);
+ pr_err("%s Unable to create mapinfo hash table\n", __func__);
+ return -ENOMEM;
+ }
+ }
+ atomic_inc(&iwpm_admin.refcount);
+ mutex_unlock(&iwpm_admin_lock);
+ iwpm_set_valid(nl_client, 1);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_init);
+
+static void free_hash_bucket(void);
+
+int iwpm_exit(u8 nl_client)
+{
+
+ if (!iwpm_valid_client(nl_client))
+ return -EINVAL;
+ mutex_lock(&iwpm_admin_lock);
+ if (atomic_read(&iwpm_admin.refcount) == 0) {
+ mutex_unlock(&iwpm_admin_lock);
+ pr_err("%s Incorrect usage - negative refcount\n", __func__);
+ return -EINVAL;
+ }
+ if (atomic_dec_and_test(&iwpm_admin.refcount)) {
+ free_hash_bucket();
+ pr_debug("%s: Mapinfo hash table is destroyed\n", __func__);
+ }
+ mutex_unlock(&iwpm_admin_lock);
+ iwpm_set_valid(nl_client, 0);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_exit);
+
+static struct hlist_head *get_hash_bucket_head(struct sockaddr_storage *,
+ struct sockaddr_storage *);
+
+int iwpm_create_mapinfo(struct sockaddr_storage *local_sockaddr,
+ struct sockaddr_storage *mapped_sockaddr,
+ u8 nl_client)
+{
+ struct hlist_head *hash_bucket_head;
+ struct iwpm_mapping_info *map_info;
+ unsigned long flags;
+
+ if (!iwpm_valid_client(nl_client))
+ return -EINVAL;
+ map_info = kzalloc(sizeof(struct iwpm_mapping_info), GFP_KERNEL);
+ if (!map_info) {
+ pr_err("%s: Unable to allocate a mapping info\n", __func__);
+ return -ENOMEM;
+ }
+ memcpy(&map_info->local_sockaddr, local_sockaddr,
+ sizeof(struct sockaddr_storage));
+ memcpy(&map_info->mapped_sockaddr, mapped_sockaddr,
+ sizeof(struct sockaddr_storage));
+ map_info->nl_client = nl_client;
+
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ if (iwpm_hash_bucket) {
+ hash_bucket_head = get_hash_bucket_head(
+ &map_info->local_sockaddr,
+ &map_info->mapped_sockaddr);
+ hlist_add_head(&map_info->hlist_node, hash_bucket_head);
+ }
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL(iwpm_create_mapinfo);
+
+int iwpm_remove_mapinfo(struct sockaddr_storage *local_sockaddr,
+ struct sockaddr_storage *mapped_local_addr)
+{
+ struct hlist_node *tmp_hlist_node;
+ struct hlist_head *hash_bucket_head;
+ struct iwpm_mapping_info *map_info = NULL;
+ unsigned long flags;
+ int ret = -EINVAL;
+
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ if (iwpm_hash_bucket) {
+ hash_bucket_head = get_hash_bucket_head(
+ local_sockaddr,
+ mapped_local_addr);
+ hlist_for_each_entry_safe(map_info, tmp_hlist_node,
+ hash_bucket_head, hlist_node) {
+
+ if (!iwpm_compare_sockaddr(&map_info->mapped_sockaddr,
+ mapped_local_addr)) {
+
+ hlist_del_init(&map_info->hlist_node);
+ kfree(map_info);
+ ret = 0;
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(iwpm_remove_mapinfo);
+
+static void free_hash_bucket(void)
+{
+ struct hlist_node *tmp_hlist_node;
+ struct iwpm_mapping_info *map_info;
+ unsigned long flags;
+ int i;
+
+ /* remove all the mapinfo data from the list */
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+ hlist_for_each_entry_safe(map_info, tmp_hlist_node,
+ &iwpm_hash_bucket[i], hlist_node) {
+
+ hlist_del_init(&map_info->hlist_node);
+ kfree(map_info);
+ }
+ }
+ /* free the hash list */
+ kfree(iwpm_hash_bucket);
+ iwpm_hash_bucket = NULL;
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
+}
+
+struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
+ u8 nl_client, gfp_t gfp)
+{
+ struct iwpm_nlmsg_request *nlmsg_request = NULL;
+ unsigned long flags;
+
+ nlmsg_request = kzalloc(sizeof(struct iwpm_nlmsg_request), gfp);
+ if (!nlmsg_request) {
+ pr_err("%s Unable to allocate a nlmsg_request\n", __func__);
+ return NULL;
+ }
+ spin_lock_irqsave(&iwpm_nlmsg_req_lock, flags);
+ list_add_tail(&nlmsg_request->inprocess_list, &iwpm_nlmsg_req_list);
+ spin_unlock_irqrestore(&iwpm_nlmsg_req_lock, flags);
+
+ kref_init(&nlmsg_request->kref);
+ kref_get(&nlmsg_request->kref);
+ nlmsg_request->nlmsg_seq = nlmsg_seq;
+ nlmsg_request->nl_client = nl_client;
+ nlmsg_request->request_done = 0;
+ nlmsg_request->err_code = 0;
+ return nlmsg_request;
+}
+
+void iwpm_free_nlmsg_request(struct kref *kref)
+{
+ struct iwpm_nlmsg_request *nlmsg_request;
+ unsigned long flags;
+
+ nlmsg_request = container_of(kref, struct iwpm_nlmsg_request, kref);
+
+ spin_lock_irqsave(&iwpm_nlmsg_req_lock, flags);
+ list_del_init(&nlmsg_request->inprocess_list);
+ spin_unlock_irqrestore(&iwpm_nlmsg_req_lock, flags);
+
+ if (!nlmsg_request->request_done)
+ pr_debug("%s Freeing incomplete nlmsg request (seq = %u).\n",
+ __func__, nlmsg_request->nlmsg_seq);
+ kfree(nlmsg_request);
+}
+
+struct iwpm_nlmsg_request *iwpm_find_nlmsg_request(__u32 echo_seq)
+{
+ struct iwpm_nlmsg_request *nlmsg_request;
+ struct iwpm_nlmsg_request *found_request = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&iwpm_nlmsg_req_lock, flags);
+ list_for_each_entry(nlmsg_request, &iwpm_nlmsg_req_list,
+ inprocess_list) {
+ if (nlmsg_request->nlmsg_seq == echo_seq) {
+ found_request = nlmsg_request;
+ kref_get(&nlmsg_request->kref);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&iwpm_nlmsg_req_lock, flags);
+ return found_request;
+}
+
+int iwpm_wait_complete_req(struct iwpm_nlmsg_request *nlmsg_request)
+{
+ int ret;
+ init_waitqueue_head(&nlmsg_request->waitq);
+
+ ret = wait_event_timeout(nlmsg_request->waitq,
+ (nlmsg_request->request_done != 0), IWPM_NL_TIMEOUT);
+ if (!ret) {
+ ret = -EINVAL;
+ pr_info("%s: Timeout %d sec for netlink request (seq = %u)\n",
+ __func__, (IWPM_NL_TIMEOUT/HZ), nlmsg_request->nlmsg_seq);
+ } else {
+ ret = nlmsg_request->err_code;
+ }
+ kref_put(&nlmsg_request->kref, iwpm_free_nlmsg_request);
+ return ret;
+}
+
+int iwpm_get_nlmsg_seq(void)
+{
+ return atomic_inc_return(&iwpm_admin.nlmsg_seq);
+}
+
+int iwpm_valid_client(u8 nl_client)
+{
+ if (nl_client >= RDMA_NL_NUM_CLIENTS)
+ return 0;
+ return iwpm_admin.client_list[nl_client];
+}
+
+void iwpm_set_valid(u8 nl_client, int valid)
+{
+ if (nl_client >= RDMA_NL_NUM_CLIENTS)
+ return;
+ iwpm_admin.client_list[nl_client] = valid;
+}
+
+/* valid client */
+int iwpm_registered_client(u8 nl_client)
+{
+ return iwpm_admin.reg_list[nl_client];
+}
+
+/* valid client */
+void iwpm_set_registered(u8 nl_client, int reg)
+{
+ iwpm_admin.reg_list[nl_client] = reg;
+}
+
+int iwpm_compare_sockaddr(struct sockaddr_storage *a_sockaddr,
+ struct sockaddr_storage *b_sockaddr)
+{
+ if (a_sockaddr->ss_family != b_sockaddr->ss_family)
+ return 1;
+ if (a_sockaddr->ss_family == AF_INET) {
+ struct sockaddr_in *a4_sockaddr =
+ (struct sockaddr_in *)a_sockaddr;
+ struct sockaddr_in *b4_sockaddr =
+ (struct sockaddr_in *)b_sockaddr;
+ if (!memcmp(&a4_sockaddr->sin_addr,
+ &b4_sockaddr->sin_addr, sizeof(struct in_addr))
+ && a4_sockaddr->sin_port == b4_sockaddr->sin_port)
+ return 0;
+
+ } else if (a_sockaddr->ss_family == AF_INET6) {
+ struct sockaddr_in6 *a6_sockaddr =
+ (struct sockaddr_in6 *)a_sockaddr;
+ struct sockaddr_in6 *b6_sockaddr =
+ (struct sockaddr_in6 *)b_sockaddr;
+ if (!memcmp(&a6_sockaddr->sin6_addr,
+ &b6_sockaddr->sin6_addr, sizeof(struct in6_addr))
+ && a6_sockaddr->sin6_port == b6_sockaddr->sin6_port)
+ return 0;
+
+ } else {
+ pr_err("%s: Invalid sockaddr family\n", __func__);
+ }
+ return 1;
+}
+
+struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
+ int nl_client)
+{
+ struct sk_buff *skb = NULL;
+
+ skb = dev_alloc_skb(NLMSG_GOODSIZE);
+ if (!skb) {
+ pr_err("%s Unable to allocate skb\n", __func__);
+ goto create_nlmsg_exit;
+ }
+ if (!(ibnl_put_msg(skb, nlh, 0, 0, nl_client, nl_op,
+ NLM_F_REQUEST))) {
+ pr_warn("%s: Unable to put the nlmsg header\n", __func__);
+ dev_kfree_skb(skb);
+ skb = NULL;
+ }
+create_nlmsg_exit:
+ return skb;
+}
+
+int iwpm_parse_nlmsg(struct netlink_callback *cb, int policy_max,
+ const struct nla_policy *nlmsg_policy,
+ struct nlattr *nltb[], const char *msg_type)
+{
+ int nlh_len = 0;
+ int ret;
+ const char *err_str = "";
+
+ ret = nlmsg_validate(cb->nlh, nlh_len, policy_max-1, nlmsg_policy);
+ if (ret) {
+ err_str = "Invalid attribute";
+ goto parse_nlmsg_error;
+ }
+ ret = nlmsg_parse(cb->nlh, nlh_len, nltb, policy_max-1, nlmsg_policy);
+ if (ret) {
+ err_str = "Unable to parse the nlmsg";
+ goto parse_nlmsg_error;
+ }
+ ret = iwpm_validate_nlmsg_attr(nltb, policy_max);
+ if (ret) {
+ err_str = "Invalid NULL attribute";
+ goto parse_nlmsg_error;
+ }
+ return 0;
+parse_nlmsg_error:
+ pr_warn("%s: %s (msg type %s ret = %d)\n",
+ __func__, err_str, msg_type, ret);
+ return ret;
+}
+
+void iwpm_print_sockaddr(struct sockaddr_storage *sockaddr, char *msg)
+{
+ struct sockaddr_in6 *sockaddr_v6;
+ struct sockaddr_in *sockaddr_v4;
+
+ switch (sockaddr->ss_family) {
+ case AF_INET:
+ sockaddr_v4 = (struct sockaddr_in *)sockaddr;
+ pr_debug("%s IPV4 %pI4: %u(0x%04X)\n",
+ msg, &sockaddr_v4->sin_addr,
+ ntohs(sockaddr_v4->sin_port),
+ ntohs(sockaddr_v4->sin_port));
+ break;
+ case AF_INET6:
+ sockaddr_v6 = (struct sockaddr_in6 *)sockaddr;
+ pr_debug("%s IPV6 %pI6: %u(0x%04X)\n",
+ msg, &sockaddr_v6->sin6_addr,
+ ntohs(sockaddr_v6->sin6_port),
+ ntohs(sockaddr_v6->sin6_port));
+ break;
+ default:
+ break;
+ }
+}
+
+static u32 iwpm_ipv6_jhash(struct sockaddr_in6 *ipv6_sockaddr)
+{
+ u32 ipv6_hash = jhash(&ipv6_sockaddr->sin6_addr, sizeof(struct in6_addr), 0);
+ u32 hash = jhash_2words(ipv6_hash, (__force u32) ipv6_sockaddr->sin6_port, 0);
+ return hash;
+}
+
+static u32 iwpm_ipv4_jhash(struct sockaddr_in *ipv4_sockaddr)
+{
+ u32 ipv4_hash = jhash(&ipv4_sockaddr->sin_addr, sizeof(struct in_addr), 0);
+ u32 hash = jhash_2words(ipv4_hash, (__force u32) ipv4_sockaddr->sin_port, 0);
+ return hash;
+}
+
+static struct hlist_head *get_hash_bucket_head(struct sockaddr_storage
+ *local_sockaddr,
+ struct sockaddr_storage
+ *mapped_sockaddr)
+{
+ u32 local_hash, mapped_hash, hash;
+
+ if (local_sockaddr->ss_family == AF_INET) {
+ local_hash = iwpm_ipv4_jhash((struct sockaddr_in *) local_sockaddr);
+ mapped_hash = iwpm_ipv4_jhash((struct sockaddr_in *) mapped_sockaddr);
+
+ } else if (local_sockaddr->ss_family == AF_INET6) {
+ local_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) local_sockaddr);
+ mapped_hash = iwpm_ipv6_jhash((struct sockaddr_in6 *) mapped_sockaddr);
+ } else {
+ pr_err("%s: Invalid sockaddr family\n", __func__);
+ return NULL;
+ }
+
+ if (local_hash == mapped_hash) /* if port mapper isn't available */
+ hash = local_hash;
+ else
+ hash = jhash_2words(local_hash, mapped_hash, 0);
+
+ return &iwpm_hash_bucket[hash & IWPM_HASH_BUCKET_MASK];
+}
+
+static int send_mapinfo_num(u32 mapping_num, u8 nl_client, int iwpm_pid)
+{
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ u32 msg_seq;
+ const char *err_str = "";
+ int ret = -EINVAL;
+
+ skb = iwpm_create_nlmsg(RDMA_NL_IWPM_MAPINFO_NUM, &nlh, nl_client);
+ if (!skb) {
+ err_str = "Unable to create a nlmsg";
+ goto mapinfo_num_error;
+ }
+ nlh->nlmsg_seq = iwpm_get_nlmsg_seq();
+ msg_seq = 0;
+ err_str = "Unable to put attribute of mapinfo number nlmsg";
+ ret = ibnl_put_attr(skb, nlh, sizeof(u32), &msg_seq, IWPM_NLA_MAPINFO_SEQ);
+ if (ret)
+ goto mapinfo_num_error;
+ ret = ibnl_put_attr(skb, nlh, sizeof(u32),
+ &mapping_num, IWPM_NLA_MAPINFO_SEND_NUM);
+ if (ret)
+ goto mapinfo_num_error;
+ ret = ibnl_unicast(skb, nlh, iwpm_pid);
+ if (ret) {
+ skb = NULL;
+ err_str = "Unable to send a nlmsg";
+ goto mapinfo_num_error;
+ }
+ pr_debug("%s: Sent mapping number = %d\n", __func__, mapping_num);
+ return 0;
+mapinfo_num_error:
+ pr_info("%s: %s\n", __func__, err_str);
+ if (skb)
+ dev_kfree_skb(skb);
+ return ret;
+}
+
+static int send_nlmsg_done(struct sk_buff *skb, u8 nl_client, int iwpm_pid)
+{
+ struct nlmsghdr *nlh = NULL;
+ int ret = 0;
+
+ if (!skb)
+ return ret;
+ if (!(ibnl_put_msg(skb, &nlh, 0, 0, nl_client,
+ RDMA_NL_IWPM_MAPINFO, NLM_F_MULTI))) {
+ pr_warn("%s Unable to put NLMSG_DONE\n", __func__);
+ return -ENOMEM;
+ }
+ nlh->nlmsg_type = NLMSG_DONE;
+ ret = ibnl_unicast(skb, (struct nlmsghdr *)skb->data, iwpm_pid);
+ if (ret)
+ pr_warn("%s Unable to send a nlmsg\n", __func__);
+ return ret;
+}
+
+int iwpm_send_mapinfo(u8 nl_client, int iwpm_pid)
+{
+ struct iwpm_mapping_info *map_info;
+ struct sk_buff *skb = NULL;
+ struct nlmsghdr *nlh;
+ int skb_num = 0, mapping_num = 0;
+ int i = 0, nlmsg_bytes = 0;
+ unsigned long flags;
+ const char *err_str = "";
+ int ret;
+
+ skb = dev_alloc_skb(NLMSG_GOODSIZE);
+ if (!skb) {
+ ret = -ENOMEM;
+ err_str = "Unable to allocate skb";
+ goto send_mapping_info_exit;
+ }
+ skb_num++;
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+ hlist_for_each_entry(map_info, &iwpm_hash_bucket[i],
+ hlist_node) {
+ if (map_info->nl_client != nl_client)
+ continue;
+ nlh = NULL;
+ if (!(ibnl_put_msg(skb, &nlh, 0, 0, nl_client,
+ RDMA_NL_IWPM_MAPINFO, NLM_F_MULTI))) {
+ ret = -ENOMEM;
+ err_str = "Unable to put the nlmsg header";
+ goto send_mapping_info_unlock;
+ }
+ err_str = "Unable to put attribute of the nlmsg";
+ ret = ibnl_put_attr(skb, nlh,
+ sizeof(struct sockaddr_storage),
+ &map_info->local_sockaddr,
+ IWPM_NLA_MAPINFO_LOCAL_ADDR);
+ if (ret)
+ goto send_mapping_info_unlock;
+
+ ret = ibnl_put_attr(skb, nlh,
+ sizeof(struct sockaddr_storage),
+ &map_info->mapped_sockaddr,
+ IWPM_NLA_MAPINFO_MAPPED_ADDR);
+ if (ret)
+ goto send_mapping_info_unlock;
+
+ iwpm_print_sockaddr(&map_info->local_sockaddr,
+ "send_mapping_info: Local sockaddr:");
+ iwpm_print_sockaddr(&map_info->mapped_sockaddr,
+ "send_mapping_info: Mapped local sockaddr:");
+ mapping_num++;
+ nlmsg_bytes += nlh->nlmsg_len;
+
+ /* check if all mappings can fit in one skb */
+ if (NLMSG_GOODSIZE - nlmsg_bytes < nlh->nlmsg_len * 2) {
+ /* and leave room for NLMSG_DONE */
+ nlmsg_bytes = 0;
+ skb_num++;
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock,
+ flags);
+ /* send the skb */
+ ret = send_nlmsg_done(skb, nl_client, iwpm_pid);
+ skb = NULL;
+ if (ret) {
+ err_str = "Unable to send map info";
+ goto send_mapping_info_exit;
+ }
+ if (skb_num == IWPM_MAPINFO_SKB_COUNT) {
+ ret = -ENOMEM;
+ err_str = "Insufficient skbs for map info";
+ goto send_mapping_info_exit;
+ }
+ skb = dev_alloc_skb(NLMSG_GOODSIZE);
+ if (!skb) {
+ ret = -ENOMEM;
+ err_str = "Unable to allocate skb";
+ goto send_mapping_info_exit;
+ }
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ }
+ }
+ }
+send_mapping_info_unlock:
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
+send_mapping_info_exit:
+ if (ret) {
+ pr_warn("%s: %s (ret = %d)\n", __func__, err_str, ret);
+ if (skb)
+ dev_kfree_skb(skb);
+ return ret;
+ }
+ send_nlmsg_done(skb, nl_client, iwpm_pid);
+ return send_mapinfo_num(mapping_num, nl_client, iwpm_pid);
+}
+
+int iwpm_mapinfo_available(void)
+{
+ unsigned long flags;
+ int full_bucket = 0, i = 0;
+
+ spin_lock_irqsave(&iwpm_mapinfo_lock, flags);
+ if (iwpm_hash_bucket) {
+ for (i = 0; i < IWPM_HASH_BUCKET_SIZE; i++) {
+ if (!hlist_empty(&iwpm_hash_bucket[i])) {
+ full_bucket = 1;
+ break;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&iwpm_mapinfo_lock, flags);
+ return full_bucket;
+}
diff --git a/drivers/infiniband/core/iwpm_util.h b/drivers/infiniband/core/iwpm_util.h
new file mode 100644
index 00000000000..9777c869a14
--- /dev/null
+++ b/drivers/infiniband/core/iwpm_util.h
@@ -0,0 +1,238 @@
+/*
+ * 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.
+ */
+#ifndef _IWPM_UTIL_H
+#define _IWPM_UTIL_H
+
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/mutex.h>
+#include <linux/jhash.h>
+#include <linux/kref.h>
+#include <net/netlink.h>
+#include <linux/errno.h>
+#include <rdma/iw_portmap.h>
+#include <rdma/rdma_netlink.h>
+
+
+#define IWPM_NL_RETRANS 3
+#define IWPM_NL_TIMEOUT (10*HZ)
+#define IWPM_MAPINFO_SKB_COUNT 20
+
+#define IWPM_PID_UNDEFINED -1
+#define IWPM_PID_UNAVAILABLE -2
+
+struct iwpm_nlmsg_request {
+ struct list_head inprocess_list;
+ __u32 nlmsg_seq;
+ void *req_buffer;
+ u8 nl_client;
+ u8 request_done;
+ u16 err_code;
+ wait_queue_head_t waitq;
+ struct kref kref;
+};
+
+struct iwpm_mapping_info {
+ struct hlist_node hlist_node;
+ struct sockaddr_storage local_sockaddr;
+ struct sockaddr_storage mapped_sockaddr;
+ u8 nl_client;
+};
+
+struct iwpm_admin_data {
+ atomic_t refcount;
+ atomic_t nlmsg_seq;
+ int client_list[RDMA_NL_NUM_CLIENTS];
+ int reg_list[RDMA_NL_NUM_CLIENTS];
+};
+
+/**
+ * iwpm_get_nlmsg_request - Allocate and initialize netlink message request
+ * @nlmsg_seq: Sequence number of the netlink message
+ * @nl_client: The index of the netlink client
+ * @gfp: Indicates how the memory for the request should be allocated
+ *
+ * Returns the newly allocated netlink request object if successful,
+ * otherwise returns NULL
+ */
+struct iwpm_nlmsg_request *iwpm_get_nlmsg_request(__u32 nlmsg_seq,
+ u8 nl_client, gfp_t gfp);
+
+/**
+ * iwpm_free_nlmsg_request - Deallocate netlink message request
+ * @kref: Holds reference of netlink message request
+ */
+void iwpm_free_nlmsg_request(struct kref *kref);
+
+/**
+ * iwpm_find_nlmsg_request - Find netlink message request in the request list
+ * @echo_seq: Sequence number of the netlink request to find
+ *
+ * Returns the found netlink message request,
+ * if not found, returns NULL
+ */
+struct iwpm_nlmsg_request *iwpm_find_nlmsg_request(__u32 echo_seq);
+
+/**
+ * iwpm_wait_complete_req - Block while servicing the netlink request
+ * @nlmsg_request: Netlink message request to service
+ *
+ * Wakes up, after the request is completed or expired
+ * Returns 0 if the request is complete without error
+ */
+int iwpm_wait_complete_req(struct iwpm_nlmsg_request *nlmsg_request);
+
+/**
+ * iwpm_get_nlmsg_seq - Get the sequence number for a netlink
+ * message to send to the port mapper
+ *
+ * Returns the sequence number for the netlink message.
+ */
+int iwpm_get_nlmsg_seq(void);
+
+/**
+ * iwpm_valid_client - Check if the port mapper client is valid
+ * @nl_client: The index of the netlink client
+ *
+ * Valid clients need to call iwpm_init() before using
+ * the port mapper
+ */
+int iwpm_valid_client(u8 nl_client);
+
+/**
+ * iwpm_set_valid - Set the port mapper client to valid or not
+ * @nl_client: The index of the netlink client
+ * @valid: 1 if valid or 0 if invalid
+ */
+void iwpm_set_valid(u8 nl_client, int valid);
+
+/**
+ * iwpm_registered_client - Check if the port mapper client is registered
+ * @nl_client: The index of the netlink client
+ *
+ * Call iwpm_register_pid() to register a client
+ */
+int iwpm_registered_client(u8 nl_client);
+
+/**
+ * iwpm_set_registered - Set the port mapper client to registered or not
+ * @nl_client: The index of the netlink client
+ * @reg: 1 if registered or 0 if not
+ */
+void iwpm_set_registered(u8 nl_client, int reg);
+
+/**
+ * iwpm_send_mapinfo - Send local and mapped IPv4/IPv6 address info of
+ * a client to the user space port mapper
+ * @nl_client: The index of the netlink client
+ * @iwpm_pid: The pid of the user space port mapper
+ *
+ * If successful, returns the number of sent mapping info records
+ */
+int iwpm_send_mapinfo(u8 nl_client, int iwpm_pid);
+
+/**
+ * iwpm_mapinfo_available - Check if any mapping info records is available
+ * in the hash table
+ *
+ * Returns 1 if mapping information is available, otherwise returns 0
+ */
+int iwpm_mapinfo_available(void);
+
+/**
+ * iwpm_compare_sockaddr - Compare two sockaddr storage structs
+ *
+ * Returns 0 if they are holding the same ip/tcp address info,
+ * otherwise returns 1
+ */
+int iwpm_compare_sockaddr(struct sockaddr_storage *a_sockaddr,
+ struct sockaddr_storage *b_sockaddr);
+
+/**
+ * iwpm_validate_nlmsg_attr - Check for NULL netlink attributes
+ * @nltb: Holds address of each netlink message attributes
+ * @nla_count: Number of netlink message attributes
+ *
+ * Returns error if any of the nla_count attributes is NULL
+ */
+static inline int iwpm_validate_nlmsg_attr(struct nlattr *nltb[],
+ int nla_count)
+{
+ int i;
+ for (i = 1; i < nla_count; i++) {
+ if (!nltb[i])
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * iwpm_create_nlmsg - Allocate skb and form a netlink message
+ * @nl_op: Netlink message opcode
+ * @nlh: Holds address of the netlink message header in skb
+ * @nl_client: The index of the netlink client
+ *
+ * Returns the newly allcated skb, or NULL if the tailroom of the skb
+ * is insufficient to store the message header and payload
+ */
+struct sk_buff *iwpm_create_nlmsg(u32 nl_op, struct nlmsghdr **nlh,
+ int nl_client);
+
+/**
+ * iwpm_parse_nlmsg - Validate and parse the received netlink message
+ * @cb: Netlink callback structure
+ * @policy_max: Maximum attribute type to be expected
+ * @nlmsg_policy: Validation policy
+ * @nltb: Array to store policy_max parsed elements
+ * @msg_type: Type of netlink message
+ *
+ * Returns 0 on success or a negative error code
+ */
+int iwpm_parse_nlmsg(struct netlink_callback *cb, int policy_max,
+ const struct nla_policy *nlmsg_policy,
+ struct nlattr *nltb[], const char *msg_type);
+
+/**
+ * iwpm_print_sockaddr - Print IPv4/IPv6 address and TCP port
+ * @sockaddr: Socket address to print
+ * @msg: Message to print
+ */
+void iwpm_print_sockaddr(struct sockaddr_storage *sockaddr, char *msg);
+#endif
diff --git a/drivers/infiniband/core/netlink.c b/drivers/infiniband/core/netlink.c
index a1e9cba8494..23dd5a5c759 100644
--- a/drivers/infiniband/core/netlink.c
+++ b/drivers/infiniband/core/netlink.c
@@ -103,13 +103,13 @@ int ibnl_remove_client(int index)
EXPORT_SYMBOL(ibnl_remove_client);
void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq,
- int len, int client, int op)
+ int len, int client, int op, int flags)
{
unsigned char *prev_tail;
prev_tail = skb_tail_pointer(skb);
*nlh = nlmsg_put(skb, 0, seq, RDMA_NL_GET_TYPE(client, op),
- len, NLM_F_MULTI);
+ len, flags);
if (!*nlh)
goto out_nlmsg_trim;
(*nlh)->nlmsg_len = skb_tail_pointer(skb) - prev_tail;
@@ -172,6 +172,20 @@ static void ibnl_rcv(struct sk_buff *skb)
mutex_unlock(&ibnl_mutex);
}
+int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
+ __u32 pid)
+{
+ return nlmsg_unicast(nls, skb, pid);
+}
+EXPORT_SYMBOL(ibnl_unicast);
+
+int ibnl_multicast(struct sk_buff *skb, struct nlmsghdr *nlh,
+ unsigned int group, gfp_t flags)
+{
+ return nlmsg_multicast(nls, skb, 0, group, flags);
+}
+EXPORT_SYMBOL(ibnl_multicast);
+
int __init ibnl_init(void)
{
struct netlink_kernel_cfg cfg = {
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c
index 7d3292c7b4b..cbd0383f622 100644
--- a/drivers/infiniband/core/sysfs.c
+++ b/drivers/infiniband/core/sysfs.c
@@ -429,15 +429,19 @@ static void ib_port_release(struct kobject *kobj)
struct attribute *a;
int i;
- for (i = 0; (a = p->gid_group.attrs[i]); ++i)
- kfree(a);
+ if (p->gid_group.attrs) {
+ for (i = 0; (a = p->gid_group.attrs[i]); ++i)
+ kfree(a);
- kfree(p->gid_group.attrs);
+ kfree(p->gid_group.attrs);
+ }
- for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
- kfree(a);
+ if (p->pkey_group.attrs) {
+ for (i = 0; (a = p->pkey_group.attrs[i]); ++i)
+ kfree(a);
- kfree(p->pkey_group.attrs);
+ kfree(p->pkey_group.attrs);
+ }
kfree(p);
}
@@ -534,10 +538,12 @@ static int add_port(struct ib_device *device, int port_num,
p->port_num = port_num;
ret = kobject_init_and_add(&p->kobj, &port_type,
- kobject_get(device->ports_parent),
+ device->ports_parent,
"%d", port_num);
- if (ret)
- goto err_put;
+ if (ret) {
+ kfree(p);
+ return ret;
+ }
ret = sysfs_create_group(&p->kobj, &pma_group);
if (ret)
@@ -585,6 +591,7 @@ err_free_pkey:
kfree(p->pkey_group.attrs[i]);
kfree(p->pkey_group.attrs);
+ p->pkey_group.attrs = NULL;
err_remove_gid:
sysfs_remove_group(&p->kobj, &p->gid_group);
@@ -594,13 +601,13 @@ err_free_gid:
kfree(p->gid_group.attrs[i]);
kfree(p->gid_group.attrs);
+ p->gid_group.attrs = NULL;
err_remove_pma:
sysfs_remove_group(&p->kobj, &pma_group);
err_put:
- kobject_put(device->ports_parent);
- kfree(p);
+ kobject_put(&p->kobj);
return ret;
}
@@ -809,6 +816,22 @@ static struct attribute_group iw_stats_group = {
.attrs = iw_proto_stats_attrs,
};
+static void free_port_list_attributes(struct ib_device *device)
+{
+ struct kobject *p, *t;
+
+ list_for_each_entry_safe(p, t, &device->port_list, entry) {
+ struct ib_port *port = container_of(p, struct ib_port, kobj);
+ list_del(&p->entry);
+ sysfs_remove_group(p, &pma_group);
+ sysfs_remove_group(p, &port->pkey_group);
+ sysfs_remove_group(p, &port->gid_group);
+ kobject_put(p);
+ }
+
+ kobject_put(device->ports_parent);
+}
+
int ib_device_register_sysfs(struct ib_device *device,
int (*port_callback)(struct ib_device *,
u8, struct kobject *))
@@ -835,7 +858,7 @@ int ib_device_register_sysfs(struct ib_device *device,
}
device->ports_parent = kobject_create_and_add("ports",
- kobject_get(&class_dev->kobj));
+ &class_dev->kobj);
if (!device->ports_parent) {
ret = -ENOMEM;
goto err_put;
@@ -862,21 +885,7 @@ int ib_device_register_sysfs(struct ib_device *device,
return 0;
err_put:
- {
- struct kobject *p, *t;
- struct ib_port *port;
-
- list_for_each_entry_safe(p, t, &device->port_list, entry) {
- list_del(&p->entry);
- port = container_of(p, struct ib_port, kobj);
- sysfs_remove_group(p, &pma_group);
- sysfs_remove_group(p, &port->pkey_group);
- sysfs_remove_group(p, &port->gid_group);
- kobject_put(p);
- }
- }
-
- kobject_put(&class_dev->kobj);
+ free_port_list_attributes(device);
err_unregister:
device_unregister(class_dev);
@@ -887,22 +896,18 @@ err:
void ib_device_unregister_sysfs(struct ib_device *device)
{
- struct kobject *p, *t;
- struct ib_port *port;
-
/* Hold kobject until ib_dealloc_device() */
- kobject_get(&device->dev.kobj);
+ struct kobject *kobj_dev = kobject_get(&device->dev.kobj);
+ int i;
- list_for_each_entry_safe(p, t, &device->port_list, entry) {
- list_del(&p->entry);
- port = container_of(p, struct ib_port, kobj);
- sysfs_remove_group(p, &pma_group);
- sysfs_remove_group(p, &port->pkey_group);
- sysfs_remove_group(p, &port->gid_group);
- kobject_put(p);
- }
+ if (device->node_type == RDMA_NODE_RNIC && device->get_protocol_stats)
+ sysfs_remove_group(kobj_dev, &iw_stats_group);
+
+ free_port_list_attributes(device);
+
+ for (i = 0; i < ARRAY_SIZE(ib_class_attributes); ++i)
+ device_remove_file(&device->dev, ib_class_attributes[i]);
- kobject_put(device->ports_parent);
device_unregister(&device->dev);
}
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index f0d588f8859..1acb9910055 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -98,7 +98,7 @@ struct ib_umad_port {
struct ib_umad_device {
int start_port, end_port;
- struct kref ref;
+ struct kobject kobj;
struct ib_umad_port port[0];
};
@@ -134,14 +134,18 @@ static DECLARE_BITMAP(dev_map, IB_UMAD_MAX_PORTS);
static void ib_umad_add_one(struct ib_device *device);
static void ib_umad_remove_one(struct ib_device *device);
-static void ib_umad_release_dev(struct kref *ref)
+static void ib_umad_release_dev(struct kobject *kobj)
{
struct ib_umad_device *dev =
- container_of(ref, struct ib_umad_device, ref);
+ container_of(kobj, struct ib_umad_device, kobj);
kfree(dev);
}
+static struct kobj_type ib_umad_dev_ktype = {
+ .release = ib_umad_release_dev,
+};
+
static int hdr_size(struct ib_umad_file *file)
{
return file->use_pkey_index ? sizeof (struct ib_user_mad_hdr) :
@@ -780,27 +784,19 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
{
struct ib_umad_port *port;
struct ib_umad_file *file;
- int ret;
+ int ret = -ENXIO;
port = container_of(inode->i_cdev, struct ib_umad_port, cdev);
- if (port)
- kref_get(&port->umad_dev->ref);
- else
- return -ENXIO;
mutex_lock(&port->file_mutex);
- if (!port->ib_dev) {
- ret = -ENXIO;
+ if (!port->ib_dev)
goto out;
- }
+ ret = -ENOMEM;
file = kzalloc(sizeof *file, GFP_KERNEL);
- if (!file) {
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
- ret = -ENOMEM;
+ if (!file)
goto out;
- }
mutex_init(&file->mutex);
spin_lock_init(&file->send_lock);
@@ -814,6 +810,13 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
list_add_tail(&file->port_list, &port->file_list);
ret = nonseekable_open(inode, filp);
+ if (ret) {
+ list_del(&file->port_list);
+ kfree(file);
+ goto out;
+ }
+
+ kobject_get(&port->umad_dev->kobj);
out:
mutex_unlock(&port->file_mutex);
@@ -852,7 +855,7 @@ static int ib_umad_close(struct inode *inode, struct file *filp)
mutex_unlock(&file->port->file_mutex);
kfree(file);
- kref_put(&dev->ref, ib_umad_release_dev);
+ kobject_put(&dev->kobj);
return 0;
}
@@ -880,10 +883,6 @@ static int ib_umad_sm_open(struct inode *inode, struct file *filp)
int ret;
port = container_of(inode->i_cdev, struct ib_umad_port, sm_cdev);
- if (port)
- kref_get(&port->umad_dev->ref);
- else
- return -ENXIO;
if (filp->f_flags & O_NONBLOCK) {
if (down_trylock(&port->sm_sem)) {
@@ -898,17 +897,27 @@ static int ib_umad_sm_open(struct inode *inode, struct file *filp)
}
ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
- if (ret) {
- up(&port->sm_sem);
- goto fail;
- }
+ if (ret)
+ goto err_up_sem;
filp->private_data = port;
- return nonseekable_open(inode, filp);
+ ret = nonseekable_open(inode, filp);
+ if (ret)
+ goto err_clr_sm_cap;
+
+ kobject_get(&port->umad_dev->kobj);
+
+ return 0;
+
+err_clr_sm_cap:
+ swap(props.set_port_cap_mask, props.clr_port_cap_mask);
+ ib_modify_port(port->ib_dev, port->port_num, 0, &props);
+
+err_up_sem:
+ up(&port->sm_sem);
fail:
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
return ret;
}
@@ -927,7 +936,7 @@ static int ib_umad_sm_close(struct inode *inode, struct file *filp)
up(&port->sm_sem);
- kref_put(&port->umad_dev->ref, ib_umad_release_dev);
+ kobject_put(&port->umad_dev->kobj);
return ret;
}
@@ -995,6 +1004,7 @@ static int find_overflow_devnum(void)
}
static int ib_umad_init_port(struct ib_device *device, int port_num,
+ struct ib_umad_device *umad_dev,
struct ib_umad_port *port)
{
int devnum;
@@ -1027,6 +1037,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
cdev_init(&port->cdev, &umad_fops);
port->cdev.owner = THIS_MODULE;
+ port->cdev.kobj.parent = &umad_dev->kobj;
kobject_set_name(&port->cdev.kobj, "umad%d", port->dev_num);
if (cdev_add(&port->cdev, base, 1))
goto err_cdev;
@@ -1045,6 +1056,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num,
base += IB_UMAD_MAX_PORTS;
cdev_init(&port->sm_cdev, &umad_sm_fops);
port->sm_cdev.owner = THIS_MODULE;
+ port->sm_cdev.kobj.parent = &umad_dev->kobj;
kobject_set_name(&port->sm_cdev.kobj, "issm%d", port->dev_num);
if (cdev_add(&port->sm_cdev, base, 1))
goto err_sm_cdev;
@@ -1138,7 +1150,7 @@ static void ib_umad_add_one(struct ib_device *device)
if (!umad_dev)
return;
- kref_init(&umad_dev->ref);
+ kobject_init(&umad_dev->kobj, &ib_umad_dev_ktype);
umad_dev->start_port = s;
umad_dev->end_port = e;
@@ -1146,7 +1158,8 @@ static void ib_umad_add_one(struct ib_device *device)
for (i = s; i <= e; ++i) {
umad_dev->port[i - s].umad_dev = umad_dev;
- if (ib_umad_init_port(device, i, &umad_dev->port[i - s]))
+ if (ib_umad_init_port(device, i, umad_dev,
+ &umad_dev->port[i - s]))
goto err;
}
@@ -1158,7 +1171,7 @@ err:
while (--i >= s)
ib_umad_kill_port(&umad_dev->port[i - s]);
- kref_put(&umad_dev->ref, ib_umad_release_dev);
+ kobject_put(&umad_dev->kobj);
}
static void ib_umad_remove_one(struct ib_device *device)
@@ -1172,7 +1185,7 @@ static void ib_umad_remove_one(struct ib_device *device)
for (i = 0; i <= umad_dev->end_port - umad_dev->start_port; ++i)
ib_umad_kill_port(&umad_dev->port[i]);
- kref_put(&umad_dev->ref, ib_umad_release_dev);
+ kobject_put(&umad_dev->kobj);
}
static char *umad_devnode(struct device *dev, umode_t *mode)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 15:01:06 +0000