DEV_SET_ALLMULTI(9)                   Network device support                  DEV_SET_ALLMULTI(9)



NAME
       dev_set_allmulti - update allmulti count on a device

SYNOPSIS
       int dev_set_allmulti(struct net_device * dev, int inc);

ARGUMENTS
       dev
           device

       inc
           modifier

DESCRIPTION
       Add or remove reception of all multicast frames to a device. While the count in the device
       remains above zero the interface remains listening to all interfaces. Once it hits zero
       the device reverts back to normal filtering operation. A negative inc value is used to
       drop the counter when releasing a resource needing all multicasts. Return 0 if successful
       or a negative errno code on error.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                       DEV_SET_ALLMULTI(9)