filter.h

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/****************************************************************************
 * Driver for Solarflare Solarstorm network controllers and boards
 * Copyright 2005-2010 Solarflare Communications Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation, incorporated herein by reference.
 */

#ifndef EFX_FILTER_H
#define EFX_FILTER_H

#include <linux/types.h>

enum efx_filter_type {
    EFX_FILTER_TCP_FULL = 0,
    EFX_FILTER_TCP_WILD,
    EFX_FILTER_UDP_FULL,
    EFX_FILTER_UDP_WILD,
    EFX_FILTER_MAC_FULL = 4,
    EFX_FILTER_MAC_WILD,
    EFX_FILTER_UC_DEF = 8,
    EFX_FILTER_MC_DEF,
    EFX_FILTER_TYPE_COUNT,      /* number of specific types */
    EFX_FILTER_UNSPEC = 0xf,
};

enum efx_filter_priority {
    EFX_FILTER_PRI_HINT = 0,
    EFX_FILTER_PRI_MANUAL,
    EFX_FILTER_PRI_REQUIRED,
};

enum efx_filter_flags {
    EFX_FILTER_FLAG_RX_RSS = 0x01,
    EFX_FILTER_FLAG_RX_SCATTER = 0x02,
    EFX_FILTER_FLAG_RX = 0x08,
    EFX_FILTER_FLAG_TX = 0x10,
};

struct efx_filter_spec {
    u8  type:4;
    u8  priority:4;
    u8  flags;
    u16 dmaq_id;
    u32 data[3];
};

static inline void efx_filter_init_rx(struct efx_filter_spec *spec,
                      enum efx_filter_priority priority,
                      enum efx_filter_flags flags,
                      unsigned rxq_id)
{
    spec->type = EFX_FILTER_UNSPEC;
    spec->priority = priority;
    spec->flags = EFX_FILTER_FLAG_RX | flags;
    spec->dmaq_id = rxq_id;
}

static inline void efx_filter_init_tx(struct efx_filter_spec *spec,
                      unsigned txq_id)
{
    spec->type = EFX_FILTER_UNSPEC;
    spec->priority = EFX_FILTER_PRI_REQUIRED;
    spec->flags = EFX_FILTER_FLAG_TX;
    spec->dmaq_id = txq_id;
}

extern int efx_filter_set_ipv4_local(struct efx_filter_spec *spec, u8 proto,
                     __be32 host, __be16 port);
extern int efx_filter_get_ipv4_local(const struct efx_filter_spec *spec,
                     u8 *proto, __be32 *host, __be16 *port);
extern int efx_filter_set_ipv4_full(struct efx_filter_spec *spec, u8 proto,
                    __be32 host, __be16 port,
                    __be32 rhost, __be16 rport);
extern int efx_filter_get_ipv4_full(const struct efx_filter_spec *spec,
                    u8 *proto, __be32 *host, __be16 *port,
                    __be32 *rhost, __be16 *rport);
extern int efx_filter_set_eth_local(struct efx_filter_spec *spec,
                    u16 vid, const u8 *addr);
extern int efx_filter_get_eth_local(const struct efx_filter_spec *spec,
                    u16 *vid, u8 *addr);
extern int efx_filter_set_uc_def(struct efx_filter_spec *spec);
extern int efx_filter_set_mc_def(struct efx_filter_spec *spec);
enum {
    EFX_FILTER_VID_UNSPEC = 0xffff,
};

#endif /* EFX_FILTER_H */