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lxc: move wireless PHYs to a network namespace

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The 802.11 interfaces can not be moved by themselves, their Phy has to move too.

If there are other interfaces, they have to move too -- hopefully it's not too
confusing. This is a less-invasive alternative to defining a new hostdev type
for PHYs.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
(cherry picked from commit 3a495948b97770b026afab1ccaac560a9669a36e)
This commit is contained in:
Lubomir Rintel 2015-04-14 18:21:44 +02:00 committed by Cole Robinson
parent 5040f00b49
commit e5982092d1
1 changed files with 36 additions and 3 deletions
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39
src/util/virnetdev.c
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@ -551,20 +551,53 @@ int virNetDevSetMTUFromDevice(const char *ifname,
*/
int virNetDevSetNamespace(const char *ifname, pid_t pidInNs)
{
int rc;
int ret = -1;
char *pid = NULL;
char *phy = NULL;
char *phy_path = NULL;
int len;
const char *argv[] = {
"ip", "link", "set", ifname, "netns", NULL, NULL
};
const char *iwargv[] = {
"iw", "phy", NULL, "set", "netns", NULL, NULL
};
if (virAsprintf(&pid, "%lld", (long long) pidInNs) == -1)
return -1;
argv[5] = pid;
rc = virRun(argv, NULL);
if (virRun(argv, NULL) < 0)
goto cleanup;
/* The 802.11 wireless devices only move together with their PHY. */
if (virNetDevSysfsFile(&phy_path, ifname, "phy80211/name") < 0)
goto cleanup;
if ((len = virFileReadAllQuiet(phy_path, 1024, &phy) < 0)) {
if (errno == ENOENT) {
/* Okay, this is not a wireless card. Claim success. */
ret = 0;
}
goto cleanup;
}
/* Remove a line break. */
phy[len - 1] = '\0';
iwargv[2] = phy;
iwargv[5] = pid;
if (virRun(iwargv, NULL) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FREE(phy_path);
VIR_FREE(phy);
VIR_FREE(pid);
return rc;
return ret;
}
#if defined(SIOCSIFNAME) && defined(HAVE_STRUCT_IFREQ)