Commit 55901e4a authored by Ke Chen's avatar Ke Chen Committed by Wang Wensheng
Browse files

roh/core: Add support for inetaddr notifier in roh/core 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5WKYW



-----------------------------------------------------------------------

Changing the IP address will generate a network event. We register
and capture the inetaddr notifier and use the changed IP address to
configure the roh eid.

Signed-off-by: default avatarKe Chen <chenke54@huawei.com>
Reviewed-by: default avatarGang Zhang <gang.zhang@huawei.com>
Reviewed-by: default avatarYefeng Yan <yanyefeng@huawei.com>
Reviewed-by: default avatarJingchao Dai <daijingchao1@huawei.com>
parent 89f4eb95

drivers/roh/core/core.c

+64 −0
Original line number Diff line number Diff line
@@ -253,6 +253,61 @@ static int enable_device_and_get(struct roh_device *device) 
	return ret;

}



static int roh_ipv4_event(struct notifier_block *this, unsigned long event, void *ptr)

{

	struct roh_eid_attr eid_attr;

	struct in_ifaddr *ifa = ptr;

	struct roh_device *device;

	struct net_device *ndev;

	struct sockaddr_in in;

	int ret;



	device = container_of(this, struct roh_device, nb);

	ndev = ifa->ifa_dev->dev;

	if (device->netdev != ndev) {

		pr_warn("netdev mismatch.\n");

		return NOTIFY_DONE;

	}



	in.sin_addr.s_addr = ifa->ifa_address;



	eid_attr.base = be32_to_cpu(in.sin_addr.s_addr) & 0xffffff; /* lower 3B as src eid */

	eid_attr.num = 1;

	ret = roh_device_set_eid(device, &eid_attr);

	if (ret) {

		pr_err("failed to set eid by IP, ret = %d\n", ret);

		return ret;

	}



	return NOTIFY_DONE;

}



static int roh_register_inetaddr_event(struct roh_device *device)

{

	int ret;



	device->nb.notifier_call = roh_ipv4_event;

	ret = register_inetaddr_notifier(&device->nb);

	if (ret) {

		pr_err("roh_core: failed to register inetaddr notifier, ret = %d\n", ret);

		device->nb.notifier_call = NULL;

	}



	return ret;

}



static void roh_unregister_inetaddr_event(struct roh_device *device)

{

	int ret;



	if (device->nb.notifier_call) {

		ret = unregister_inetaddr_notifier(&device->nb);

		if (ret)

			pr_err("roh_core: failed to unregister inetaddr notifier, ret = %d\n", ret);

		device->nb.notifier_call = NULL;

	}

}



int roh_register_device(struct roh_device *device)

{

	int ret;
@@ -280,6 +335,12 @@ int roh_register_device(struct roh_device *device) 
	if (ret)

		goto err_dev_cleanup;



	ret = roh_register_inetaddr_event(device);

	if (ret) {

		pr_err("roh_core: failed to register inetaddr event, ret = %d\n", ret);

		goto err_unregister_sysfs;

	}



	ret = enable_device_and_get(device);

	dev_set_uevent_suppress(&device->dev, false);

	kobject_uevent(&device->dev.kobj, KOBJ_ADD);
@@ -293,6 +354,8 @@ int roh_register_device(struct roh_device *device) 


	return 0;



err_unregister_sysfs:

	roh_device_unregister_sysfs(device);

err_dev_cleanup:

	device_del(&device->dev);

out:
@@ -308,6 +371,7 @@ static void __roh_unregister_device(struct roh_device *device) 
		goto out;



	disable_device(device);

	roh_unregister_inetaddr_event(device);

	roh_device_unregister_sysfs(device);

	device_del(&device->dev);

drivers/roh/core/core.h

+1 −0
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ struct roh_device { 
	struct roh_eid_attr eid;

	struct mutex eid_mutex; /* operate eid needs to be mutexed */

	u32 link_status;

	struct notifier_block nb;



	struct attribute_group *hw_stats_ag;

	struct roh_mib_stats *hw_public_stats;