diff options
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot.h')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h index 7f8b34c49971..291d39d49c4e 100644 --- a/drivers/net/ethernet/mscc/ocelot.h +++ b/drivers/net/ethernet/mscc/ocelot.h @@ -79,13 +79,27 @@ enum macaccess_entry_type { ENTRYTYPE_MACv6, }; +/* A (PGID) port mask structure, encoding the 2^ocelot->num_phys_ports + * possibilities of egress port masks for L2 multicast traffic. + * For a switch with 9 user ports, there are 512 possible port masks, but the + * hardware only has 46 individual PGIDs that it can forward multicast traffic + * to. So we need a structure that maps the limited PGID indices to the port + * destinations requested by the user for L2 multicast. + */ +struct ocelot_pgid { + unsigned long ports; + int index; + refcount_t refcount; + struct list_head list; +}; + struct ocelot_multicast { struct list_head list; enum macaccess_entry_type entry_type; unsigned char addr[ETH_ALEN]; u16 vid; u16 ports; - int pgid; + struct ocelot_pgid *pgid; }; int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid, |