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Commit edfb9a57 by Daniel Lezcano Committed by Daniel Lezcano
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factor out networking configuration code

Change the name of the functions and factor some of them. Signed-off-by: 's avatarDaniel Lezcano <dlezcano@fr.ibm.com>
parent daa5d3fd
Showing with 49 additions and 84 deletions
src/lxc/conf.c
......@@ -1241,7 +1241,7 @@ static int setup_netdev(struct lxc_netdev *netdev)
netdev->link : "eth%d";
/* rename the interface name */
err = lxc_device_rename(ifname, netdev->name);
err = lxc_netdev_rename_by_name(ifname, netdev->name);
if (err) {
ERROR("failed to rename %s->%s : %s", ifname, netdev->name,
strerror(-err));
......@@ -1425,7 +1425,7 @@ static int instanciate_veth(struct lxc_handler *handler, struct lxc_netdev *netd
return 0;
out_delete:
lxc_device_delete(veth1);
lxc_netdev_delete_by_name(veth1);
return -1;
}
......@@ -1458,7 +1458,7 @@ static int instanciate_macvlan(struct lxc_handler *handler, struct lxc_netdev *n
netdev->ifindex = if_nametoindex(peer);
if (!netdev->ifindex) {
ERROR("failed to retrieve the index for %s", peer);
lxc_device_delete(peer);
lxc_netdev_delete_by_name(peer);
return -1;
}
......@@ -1498,7 +1498,7 @@ static int instanciate_vlan(struct lxc_handler *handler, struct lxc_netdev *netd
netdev->ifindex = if_nametoindex(peer);
if (!netdev->ifindex) {
ERROR("failed to retrieve the ifindex for %s", peer);
lxc_device_delete(peer);
lxc_netdev_delete_by_name(peer);
return -1;
}
......@@ -1579,7 +1579,7 @@ void lxc_delete_network(struct lxc_list *network)
lxc_list_for_each(iterator, network) {
netdev = iterator->elem;
if (netdev->ifindex > 0 && netdev->type != LXC_NET_PHYS)
lxc_device_delete_index(netdev->ifindex);
lxc_netdev_delete_by_index(netdev->ifindex);
}
}
......
src/lxc/network.c
......@@ -122,22 +122,17 @@ out:
return err;
}
int lxc_device_delete(const char *name)
int lxc_netdev_delete_by_index(int ifindex)
{
struct nl_handler nlh;
struct nlmsg *nlmsg = NULL, *answer = NULL;
struct link_req *link_req;
int index, len, err;
int err;
err = netlink_open(&nlh, NETLINK_ROUTE);
if (err)
return err;
err = -EINVAL;
len = strlen(name);
if (len == 1 || len > IFNAMSIZ)
goto out;
err = -ENOMEM;
nlmsg = nlmsg_alloc(NLMSG_GOOD_SIZE);
if (!nlmsg)
......@@ -147,21 +142,13 @@ int lxc_device_delete(const char *name)
if (!answer)
goto out;
err = -EINVAL;
index = if_nametoindex(name);
if (!index)
goto out;
link_req = (struct link_req *)nlmsg;
link_req->ifinfomsg.ifi_family = AF_UNSPEC;
link_req->ifinfomsg.ifi_index = index;
link_req->ifinfomsg.ifi_index = ifindex;
nlmsg->nlmsghdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
nlmsg->nlmsghdr.nlmsg_flags = NLM_F_ACK|NLM_F_REQUEST;
nlmsg->nlmsghdr.nlmsg_type = RTM_DELLINK;
if (nla_put_string(nlmsg, IFLA_IFNAME, name))
goto out;
err = netlink_transaction(&nlh, nlmsg, answer);
out:
netlink_close(&nlh);
......@@ -170,17 +157,32 @@ out:
return err;
}
int lxc_device_delete_index(int ifindex)
int lxc_netdev_delete_by_name(const char *name)
{
int index;
index = if_nametoindex(name);
if (!index)
return -EINVAL;
return lxc_netdev_delete_by_index(index);
}
int lxc_netdev_rename_by_index(int ifindex, const char *newname)
{
struct nl_handler nlh;
struct nlmsg *nlmsg = NULL, *answer = NULL;
struct link_req *link_req;
int err;
int len, err;
err = netlink_open(&nlh, NETLINK_ROUTE);
if (err)
return err;
len = strlen(newname);
if (len == 1 || len > IFNAMSIZ)
goto out;
err = -ENOMEM;
nlmsg = nlmsg_alloc(NLMSG_GOOD_SIZE);
if (!nlmsg)
......@@ -195,7 +197,10 @@ int lxc_device_delete_index(int ifindex)
link_req->ifinfomsg.ifi_index = ifindex;
nlmsg->nlmsghdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
nlmsg->nlmsghdr.nlmsg_flags = NLM_F_ACK|NLM_F_REQUEST;
nlmsg->nlmsghdr.nlmsg_type = RTM_DELLINK;
nlmsg->nlmsghdr.nlmsg_type = RTM_NEWLINK;
if (nla_put_string(nlmsg, IFLA_IFNAME, newname))
goto out;
err = netlink_transaction(&nlh, nlmsg, answer);
out:
......@@ -205,6 +210,21 @@ out:
return err;
}
int lxc_netdev_rename_by_name(const char *oldname, const char *newname)
{
int len, index;
len = strlen(oldname);
if (len == 1 || len > IFNAMSIZ)
return -EINVAL;
index = if_nametoindex(oldname);
if (!index)
return -EINVAL;
return lxc_netdev_rename_by_index(index, newname);
}
static int device_set_flag(const char *name, int flag)
{
struct nl_handler nlh;
......@@ -310,58 +330,6 @@ int lxc_device_down(const char *name)
return device_set_flag(name, 0);
}
int lxc_device_rename(const char *oldname, const char *newname)
{
struct nl_handler nlh;
struct nlmsg *nlmsg = NULL, *answer = NULL;
struct link_req *link_req;
int index, len, err;
err = netlink_open(&nlh, NETLINK_ROUTE);
if (err)
return err;
err = -EINVAL;
len = strlen(oldname);
if (len == 1 || len > IFNAMSIZ)
goto out;
len = strlen(newname);
if (len == 1 || len > IFNAMSIZ)
goto out;
err = -ENOMEM;
nlmsg = nlmsg_alloc(NLMSG_GOOD_SIZE);
if (!nlmsg)
goto out;
answer = nlmsg_alloc(NLMSG_GOOD_SIZE);
if (!answer)
goto out;
err = -EINVAL;
index = if_nametoindex(oldname);
if (!index)
goto out;
link_req = (struct link_req *)nlmsg;
link_req->ifinfomsg.ifi_family = AF_UNSPEC;
link_req->ifinfomsg.ifi_index = index;
nlmsg->nlmsghdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
nlmsg->nlmsghdr.nlmsg_flags = NLM_F_ACK|NLM_F_REQUEST;
nlmsg->nlmsghdr.nlmsg_type = RTM_NEWLINK;
if (nla_put_string(nlmsg, IFLA_IFNAME, newname))
goto out;
err = netlink_transaction(&nlh, nlmsg, answer);
out:
netlink_close(&nlh);
nlmsg_free(answer);
nlmsg_free(nlmsg);
return err;
}
int lxc_veth_create(const char *name1, const char *name2)
{
struct nl_handler nlh;
......
src/lxc/network.h
......@@ -36,12 +36,14 @@ extern int lxc_device_move(int ifindex, pid_t pid);
/*
* Delete a network device
*/
extern int lxc_device_delete(const char *name);
extern int lxc_netdev_delete_by_name(const char *name);
extern int lxc_netdev_delete_by_index(int ifindex);
/*
* Delete a network device by the index
* Change the device name
*/
extern int lxc_device_delete_index(int ifindex);
extern int lxc_netdev_rename_by_name(const char *oldname, const char *newname);
extern int lxc_netdev_rename_by_index(int ifindex, const char *newname);
/*
* Set the device network up
......@@ -54,11 +56,6 @@ extern int lxc_device_up(const char *name);
extern int lxc_device_down(const char *name);
/*
* Change the device name
*/
extern int lxc_device_rename(const char *oldname, const char *newname);
/*
* Change the mtu size for the specified device
*/
extern int lxc_device_set_mtu(const char *name, int mtu);
......
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