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Wait up to 10 seconds for late-initializing network interfaces to arrive.

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Reviewed by:	rmacklem
This commit is contained in:
Ian Lepore 2015-09-26 13:55:55 +00:00
parent 2e33ae99cf
commit e488229ba4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=288265
1 changed files with 9 additions and 0 deletions
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9
sys/nfs/nfs_diskless.c
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@ -57,6 +57,8 @@ __FBSDID("$FreeBSD$");
#include <nfsclient/nfs.h>
#include <nfs/nfsdiskless.h>
#define NFS_IFACE_TIMEOUT_SECS 10 /* Timeout for interface to appear. */
static int inaddr_to_sockaddr(char *ev, struct sockaddr_in *sa);
static int hwaddr_to_sockaddr(char *ev, struct sockaddr_dl *sa);
static int decode_nfshandle(char *ev, u_char *fh, int maxfh);
@ -170,6 +172,7 @@ nfs_setup_diskless(void)
char *cp;
int cnt, fhlen, is_nfsv3;
uint32_t len;
time_t timeout_at;
if (nfs_diskless_valid != 0)
return;
@ -214,6 +217,8 @@ nfs_setup_diskless(void)
return;
}
ifa = NULL;
timeout_at = time_uptime + NFS_IFACE_TIMEOUT_SECS;
retry:
CURVNET_SET(TD_TO_VNET(curthread));
IFNET_RLOCK();
TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
@ -234,6 +239,10 @@ nfs_setup_diskless(void)
}
IFNET_RUNLOCK();
CURVNET_RESTORE();
if (time_uptime < timeout_at) {
pause("nfssdl", hz / 5);
goto retry;
}
printf("nfs_diskless: no interface\n");
return; /* no matching interface */
match_done: