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netdev: Track interface UP flag

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This commit is contained in:
Andrew Zaborowski 2016-06-20 12:42:03 +02:00 committed by Denis Kenzior
parent c3f863f2da
commit aa7a6a4619
2 changed files with 81 additions and 0 deletions
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80
src/netdev.c
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@ -52,6 +52,7 @@ struct netdev {
char name[IFNAMSIZ];
uint32_t type;
uint8_t addr[ETH_ALEN];
bool up:1;
struct l_io *eapol_io;
@ -189,6 +190,11 @@ const char *netdev_get_name(struct netdev *netdev)
return netdev->name;
}
bool netdev_get_is_up(struct netdev *netdev)
{
return netdev->up;
}
static void netdev_free(void *data)
{
struct netdev *netdev = data;
@ -994,6 +1000,40 @@ static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
}
}
static void netdev_newlink_notify(const struct ifinfomsg *ifi, int bytes)
{
struct netdev *netdev;
bool up;
netdev = netdev_find(ifi->ifi_index);
if (!netdev)
return;
up = (ifi->ifi_flags & IFF_UP) != 0;
if (netdev->up == up)
return;
netdev->up = up;
}
static void netdev_getlink_cb(int error, uint16_t type, const void *data,
uint32_t len, void *user_data)
{
const struct ifinfomsg *ifi = data;
unsigned int bytes;
if (error != 0 || ifi->ifi_type != ARPHRD_ETHER ||
type != RTM_NEWLINK) {
l_error("RTM_GETLINK error %i ifi_type %i type %i",
error, (int) ifi->ifi_type, (int) type);
return;
}
bytes = len - NLMSG_ALIGN(sizeof(struct ifinfomsg));
netdev_newlink_notify(ifi, bytes);
}
static void netdev_get_interface_callback(struct l_genl_msg *msg,
void *user_data)
{
@ -1006,6 +1046,8 @@ static void netdev_get_interface_callback(struct l_genl_msg *msg,
const uint32_t *ifindex, *iftype;
struct netdev *netdev;
struct wiphy *wiphy = NULL;
struct ifinfomsg *rtmmsg;
size_t bufsize;
if (!l_genl_attr_init(&attr, msg))
return;
@ -1095,6 +1137,19 @@ static void netdev_get_interface_callback(struct l_genl_msg *msg,
l_debug("Found interface %s[%d]", netdev->name, netdev->index);
device_create(wiphy, netdev);
/* Query interface flags */
bufsize = NLMSG_LENGTH(sizeof(struct ifinfomsg));
rtmmsg = l_malloc(bufsize);
memset(rtmmsg, 0, bufsize);
rtmmsg->ifi_family = AF_UNSPEC;
rtmmsg->ifi_index = *ifindex;
l_netlink_send(rtnl, RTM_GETLINK, 0, rtmmsg, bufsize,
netdev_getlink_cb, netdev, NULL);
l_free(rtmmsg);
}
static void netdev_config_notify(struct l_genl_msg *msg, void *user_data)
@ -1153,6 +1208,24 @@ static void netdev_config_notify(struct l_genl_msg *msg, void *user_data)
}
}
static void netdev_link_notify(uint16_t type, const void *data, uint32_t len,
void *user_data)
{
const struct ifinfomsg *ifi = data;
unsigned int bytes;
if (ifi->ifi_type != ARPHRD_ETHER)
return;
bytes = len - NLMSG_ALIGN(sizeof(struct ifinfomsg));
switch (type) {
case RTM_NEWLINK:
netdev_newlink_notify(ifi, bytes);
break;
}
}
bool netdev_init(struct l_genl_family *in)
{
struct l_genl_msg *msg;
@ -1171,6 +1244,13 @@ bool netdev_init(struct l_genl_family *in)
if (getenv("IWD_RTNL_DEBUG"))
l_netlink_set_debug(rtnl, do_debug, "[RTNL] ", NULL);
if (!l_netlink_register(rtnl, RTNLGRP_LINK,
netdev_link_notify, NULL, NULL)) {
l_error("Failed to register for RTNL link notifications");
l_netlink_destroy(rtnl);
return false;
}
netdev_list = l_queue_new();
nl80211 = in;

1
src/netdev.h
View File

@ -57,6 +57,7 @@ const uint8_t *netdev_get_address(struct netdev *netdev);
uint32_t netdev_get_ifindex(struct netdev *netdev);
uint32_t netdev_get_iftype(struct netdev *netdev);
const char *netdev_get_name(struct netdev *netdev);
bool netdev_get_is_up(struct netdev *netdev);
int netdev_connect(struct netdev *netdev, struct scan_bss *bss,
struct eapol_sm *sm,