7.17 N_putpvcmap--Change PVC Packet and Window Sizes

This ioctl is used to change the packet and window sizes of a PVC from the defaults configured for the link that the PVC is active on.

This ioctl can disrupt other users significantly. For this reason it can only be used by root.

Associated Structure

The following structure is associated with this ioctl:

struct pvcconff {
        uint32_t     link_id;      /* Link #           */
        unsigned short    lci;          /* Logical channel  */
        unsigned char     locpacket;    /* Loc packet size  */
        unsigned char     rempacket;    /* Rem packet size  */
        unsigned char     locwsize;     /* Loc window size  */
        unsigned char     remwsize;     /* Rem window size  */
};