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Fix a timing issue with the wired driver.

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After configuring the interface, wait for the link to become active.
Many ethernet drivers reset the chip when we set multicast filters
(causing significant delays due to link re-negotiation) and, by the time
we start sending packets, they are discared instead of going to the ether.

Tested by:	dumbbell
This commit is contained in:
Rui Paulo 2013-08-07 01:01:58 +00:00
parent a94a4b74bd
commit 43673d4bfc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254019
1 changed files with 30 additions and 1 deletions
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31
contrib/wpa/src/drivers/driver_wired.c
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@ -17,6 +17,7 @@
#endif /* __linux__ */
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
#include <net/if_dl.h>
#include <net/if_media.h>
#endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) */
#ifdef __sun__
#include <sys/sockio.h>
@ -453,6 +454,29 @@ static int wpa_driver_wired_set_ifflags(const char *ifname, int flags)
return 0;
}
static int wpa_driver_wired_get_ifstatus(const char *ifname, int *status)
{
struct ifmediareq ifmr;
int s;
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0) {
perror("socket");
return -1;
}
os_memset(&ifmr, 0, sizeof(ifmr));
os_strlcpy(ifmr.ifm_name, ifname, IFNAMSIZ);
if (ioctl(s, SIOCGIFMEDIA, (caddr_t) &ifmr) < 0) {
perror("ioctl[SIOCGIFMEDIA]");
close(s);
return -1;
}
close(s);
*status = ifmr.ifm_status & IFM_ACTIVE;
return 0;
}
static int wpa_driver_wired_multi(const char *ifname, const u8 *addr, int add)
{
@ -511,7 +535,7 @@ static int wpa_driver_wired_multi(const char *ifname, const u8 *addr, int add)
static void * wpa_driver_wired_init(void *ctx, const char *ifname)
{
struct wpa_driver_wired_data *drv;
int flags;
int flags, status;
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
@ -562,6 +586,11 @@ static void * wpa_driver_wired_init(void *ctx, const char *ifname)
__func__);
drv->iff_allmulti = 1;
}
wpa_printf(MSG_DEBUG, "%s: waiting for link to become active",
__func__);
while (wpa_driver_wired_get_ifstatus(ifname, &status) == 0 &&
status == 0)
sleep(1);
return drv;
}