| /**************************************************************************** |
| * 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_table_id { |
| EFX_FILTER_TABLE_RX_IP = 0, |
| EFX_FILTER_TABLE_RX_MAC, |
| EFX_FILTER_TABLE_COUNT, |
| }; |
| |
| /** |
| * enum efx_filter_type - type of hardware filter |
| * @EFX_FILTER_RX_TCP_FULL: RX, matching TCP/IPv4 4-tuple |
| * @EFX_FILTER_RX_TCP_WILD: RX, matching TCP/IPv4 destination (host, port) |
| * @EFX_FILTER_RX_UDP_FULL: RX, matching UDP/IPv4 4-tuple |
| * @EFX_FILTER_RX_UDP_WILD: RX, matching UDP/IPv4 destination (host, port) |
| * @EFX_FILTER_RX_MAC_FULL: RX, matching Ethernet destination MAC address, VID |
| * @EFX_FILTER_RX_MAC_WILD: RX, matching Ethernet destination MAC address |
| * |
| * Falcon NICs only support the RX TCP/IPv4 and UDP/IPv4 filter types. |
| */ |
| enum efx_filter_type { |
| EFX_FILTER_RX_TCP_FULL = 0, |
| EFX_FILTER_RX_TCP_WILD, |
| EFX_FILTER_RX_UDP_FULL, |
| EFX_FILTER_RX_UDP_WILD, |
| EFX_FILTER_RX_MAC_FULL = 4, |
| EFX_FILTER_RX_MAC_WILD, |
| EFX_FILTER_TYPE_COUNT, |
| }; |
| |
| /** |
| * enum efx_filter_priority - priority of a hardware filter specification |
| * @EFX_FILTER_PRI_HINT: Performance hint |
| * @EFX_FILTER_PRI_MANUAL: Manually configured filter |
| * @EFX_FILTER_PRI_REQUIRED: Required for correct behaviour |
| */ |
| enum efx_filter_priority { |
| EFX_FILTER_PRI_HINT = 0, |
| EFX_FILTER_PRI_MANUAL, |
| EFX_FILTER_PRI_REQUIRED, |
| }; |
| |
| /** |
| * enum efx_filter_flags - flags for hardware filter specifications |
| * @EFX_FILTER_FLAG_RX_RSS: Use RSS to spread across multiple queues. |
| * By default, matching packets will be delivered only to the |
| * specified queue. If this flag is set, they will be delivered |
| * to a range of queues offset from the specified queue number |
| * according to the indirection table. |
| * @EFX_FILTER_FLAG_RX_SCATTER: Enable DMA scatter on the receiving |
| * queue. |
| * @EFX_FILTER_FLAG_RX_OVERRIDE_IP: Enables a MAC filter to override |
| * any IP filter that matches the same packet. By default, IP |
| * filters take precedence. |
| * |
| * Currently, no flags are defined for TX filters. |
| */ |
| enum efx_filter_flags { |
| EFX_FILTER_FLAG_RX_RSS = 0x01, |
| EFX_FILTER_FLAG_RX_SCATTER = 0x02, |
| EFX_FILTER_FLAG_RX_OVERRIDE_IP = 0x04, |
| }; |
| |
| /** |
| * struct efx_filter_spec - specification for a hardware filter |
| * @type: Type of match to be performed, from &enum efx_filter_type |
| * @priority: Priority of the filter, from &enum efx_filter_priority |
| * @flags: Miscellaneous flags, from &enum efx_filter_flags |
| * @dmaq_id: Source/target queue index |
| * @data: Match data (type-dependent) |
| * |
| * Use the efx_filter_set_*() functions to initialise the @type and |
| * @data fields. |
| */ |
| struct efx_filter_spec { |
| u8 type:4; |
| u8 priority:4; |
| u8 flags; |
| u16 dmaq_id; |
| u32 data[3]; |
| }; |
| |
| /** |
| * efx_filter_set_rx_tcp_full - specify RX filter with TCP/IPv4 full match |
| * @spec: Specification to initialise |
| * @shost: Source host address (host byte order) |
| * @sport: Source port (host byte order) |
| * @dhost: Destination host address (host byte order) |
| * @dport: Destination port (host byte order) |
| */ |
| static inline void |
| efx_filter_set_rx_tcp_full(struct efx_filter_spec *spec, |
| u32 shost, u16 sport, u32 dhost, u16 dport) |
| { |
| spec->type = EFX_FILTER_RX_TCP_FULL; |
| spec->data[0] = sport | shost << 16; |
| spec->data[1] = dport << 16 | shost >> 16; |
| spec->data[2] = dhost; |
| } |
| |
| /** |
| * efx_filter_set_rx_tcp_wild - specify RX filter with TCP/IPv4 wildcard match |
| * @spec: Specification to initialise |
| * @dhost: Destination host address (host byte order) |
| * @dport: Destination port (host byte order) |
| */ |
| static inline void |
| efx_filter_set_rx_tcp_wild(struct efx_filter_spec *spec, u32 dhost, u16 dport) |
| { |
| spec->type = EFX_FILTER_RX_TCP_WILD; |
| spec->data[0] = 0; |
| spec->data[1] = dport << 16; |
| spec->data[2] = dhost; |
| } |
| |
| /** |
| * efx_filter_set_rx_udp_full - specify RX filter with UDP/IPv4 full match |
| * @spec: Specification to initialise |
| * @shost: Source host address (host byte order) |
| * @sport: Source port (host byte order) |
| * @dhost: Destination host address (host byte order) |
| * @dport: Destination port (host byte order) |
| */ |
| static inline void |
| efx_filter_set_rx_udp_full(struct efx_filter_spec *spec, |
| u32 shost, u16 sport, u32 dhost, u16 dport) |
| { |
| spec->type = EFX_FILTER_RX_UDP_FULL; |
| spec->data[0] = sport | shost << 16; |
| spec->data[1] = dport << 16 | shost >> 16; |
| spec->data[2] = dhost; |
| } |
| |
| /** |
| * efx_filter_set_rx_udp_wild - specify RX filter with UDP/IPv4 wildcard match |
| * @spec: Specification to initialise |
| * @dhost: Destination host address (host byte order) |
| * @dport: Destination port (host byte order) |
| */ |
| static inline void |
| efx_filter_set_rx_udp_wild(struct efx_filter_spec *spec, u32 dhost, u16 dport) |
| { |
| spec->type = EFX_FILTER_RX_UDP_WILD; |
| spec->data[0] = dport; |
| spec->data[1] = 0; |
| spec->data[2] = dhost; |
| } |
| |
| /** |
| * efx_filter_set_rx_mac_full - specify RX filter with MAC full match |
| * @spec: Specification to initialise |
| * @vid: VLAN ID |
| * @addr: Destination MAC address |
| */ |
| static inline void efx_filter_set_rx_mac_full(struct efx_filter_spec *spec, |
| u16 vid, const u8 *addr) |
| { |
| spec->type = EFX_FILTER_RX_MAC_FULL; |
| spec->data[0] = vid; |
| spec->data[1] = addr[2] << 24 | addr[3] << 16 | addr[4] << 8 | addr[5]; |
| spec->data[2] = addr[0] << 8 | addr[1]; |
| } |
| |
| /** |
| * efx_filter_set_rx_mac_full - specify RX filter with MAC wildcard match |
| * @spec: Specification to initialise |
| * @addr: Destination MAC address |
| */ |
| static inline void efx_filter_set_rx_mac_wild(struct efx_filter_spec *spec, |
| const u8 *addr) |
| { |
| spec->type = EFX_FILTER_RX_MAC_WILD; |
| spec->data[0] = 0; |
| spec->data[1] = addr[2] << 24 | addr[3] << 16 | addr[4] << 8 | addr[5]; |
| spec->data[2] = addr[0] << 8 | addr[1]; |
| } |
| |
| #endif /* EFX_FILTER_H */ |