1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2005-2013 Solarflare Communications Inc.
10 #include <linux/types.h>
11 #include <linux/if_ether.h>
12 #include <asm/byteorder.h>
15 * enum efx_filter_match_flags - Flags for hardware filter match type
16 * @EFX_FILTER_MATCH_REM_HOST: Match by remote IP host address
17 * @EFX_FILTER_MATCH_LOC_HOST: Match by local IP host address
18 * @EFX_FILTER_MATCH_REM_MAC: Match by remote MAC address
19 * @EFX_FILTER_MATCH_REM_PORT: Match by remote TCP/UDP port
20 * @EFX_FILTER_MATCH_LOC_MAC: Match by local MAC address
21 * @EFX_FILTER_MATCH_LOC_PORT: Match by local TCP/UDP port
22 * @EFX_FILTER_MATCH_ETHER_TYPE: Match by Ether-type
23 * @EFX_FILTER_MATCH_INNER_VID: Match by inner VLAN ID
24 * @EFX_FILTER_MATCH_OUTER_VID: Match by outer VLAN ID
25 * @EFX_FILTER_MATCH_IP_PROTO: Match by IP transport protocol
26 * @EFX_FILTER_MATCH_LOC_MAC_IG: Match by local MAC address I/G bit.
27 * @EFX_FILTER_MATCH_ENCAP_TYPE: Match by encapsulation type.
28 * Used for RX default unicast and multicast/broadcast filters.
30 * Only some combinations are supported, depending on NIC type:
32 * - Falcon supports RX filters matching by {TCP,UDP}/IPv4 4-tuple or
33 * local 2-tuple (only implemented for Falcon B0)
35 * - Siena supports RX and TX filters matching by {TCP,UDP}/IPv4 4-tuple
36 * or local 2-tuple, or local MAC with or without outer VID, and RX
39 * - Huntington supports filter matching controlled by firmware, potentially
40 * using {TCP,UDP}/IPv{4,6} 4-tuple or local 2-tuple, local MAC or I/G bit,
41 * with or without outer and inner VID
43 enum efx_filter_match_flags {
44 EFX_FILTER_MATCH_REM_HOST = 0x0001,
45 EFX_FILTER_MATCH_LOC_HOST = 0x0002,
46 EFX_FILTER_MATCH_REM_MAC = 0x0004,
47 EFX_FILTER_MATCH_REM_PORT = 0x0008,
48 EFX_FILTER_MATCH_LOC_MAC = 0x0010,
49 EFX_FILTER_MATCH_LOC_PORT = 0x0020,
50 EFX_FILTER_MATCH_ETHER_TYPE = 0x0040,
51 EFX_FILTER_MATCH_INNER_VID = 0x0080,
52 EFX_FILTER_MATCH_OUTER_VID = 0x0100,
53 EFX_FILTER_MATCH_IP_PROTO = 0x0200,
54 EFX_FILTER_MATCH_LOC_MAC_IG = 0x0400,
55 EFX_FILTER_MATCH_ENCAP_TYPE = 0x0800,
59 * enum efx_filter_priority - priority of a hardware filter specification
60 * @EFX_FILTER_PRI_HINT: Performance hint
61 * @EFX_FILTER_PRI_AUTO: Automatic filter based on device address list
62 * or hardware requirements. This may only be used by the filter
63 * implementation for each NIC type.
64 * @EFX_FILTER_PRI_MANUAL: Manually configured filter
65 * @EFX_FILTER_PRI_REQUIRED: Required for correct behaviour (user-level
66 * networking and SR-IOV)
68 enum efx_filter_priority {
69 EFX_FILTER_PRI_HINT = 0,
71 EFX_FILTER_PRI_MANUAL,
72 EFX_FILTER_PRI_REQUIRED,
76 * enum efx_filter_flags - flags for hardware filter specifications
77 * @EFX_FILTER_FLAG_RX_RSS: Use RSS to spread across multiple queues.
78 * By default, matching packets will be delivered only to the
79 * specified queue. If this flag is set, they will be delivered
80 * to a range of queues offset from the specified queue number
81 * according to the indirection table.
82 * @EFX_FILTER_FLAG_RX_SCATTER: Enable DMA scatter on the receiving
84 * @EFX_FILTER_FLAG_RX_OVER_AUTO: Indicates a filter that is
85 * overriding an automatic filter (priority
86 * %EFX_FILTER_PRI_AUTO). This may only be set by the filter
87 * implementation for each type. A removal request will restore
88 * the automatic filter in its place.
89 * @EFX_FILTER_FLAG_RX: Filter is for RX
90 * @EFX_FILTER_FLAG_TX: Filter is for TX
91 * @EFX_FILTER_FLAG_VPORT_ID: Virtual port ID for adapter switching.
93 enum efx_filter_flags {
94 EFX_FILTER_FLAG_RX_RSS = 0x01,
95 EFX_FILTER_FLAG_RX_SCATTER = 0x02,
96 EFX_FILTER_FLAG_RX_OVER_AUTO = 0x04,
97 EFX_FILTER_FLAG_RX = 0x08,
98 EFX_FILTER_FLAG_TX = 0x10,
99 EFX_FILTER_FLAG_VPORT_ID = 0x20,
102 /** enum efx_encap_type - types of encapsulation
103 * @EFX_ENCAP_TYPE_NONE: no encapsulation
104 * @EFX_ENCAP_TYPE_VXLAN: VXLAN encapsulation
105 * @EFX_ENCAP_TYPE_NVGRE: NVGRE encapsulation
106 * @EFX_ENCAP_TYPE_GENEVE: GENEVE encapsulation
107 * @EFX_ENCAP_FLAG_IPV6: indicates IPv6 outer frame
109 * Contains both enumerated types and flags.
110 * To get just the type, OR with @EFX_ENCAP_TYPES_MASK.
112 enum efx_encap_type {
113 EFX_ENCAP_TYPE_NONE = 0,
114 EFX_ENCAP_TYPE_VXLAN = 1,
115 EFX_ENCAP_TYPE_NVGRE = 2,
116 EFX_ENCAP_TYPE_GENEVE = 3,
118 EFX_ENCAP_TYPES_MASK = 7,
119 EFX_ENCAP_FLAG_IPV6 = 8,
123 * struct efx_filter_spec - specification for a hardware filter
124 * @match_flags: Match type flags, from &enum efx_filter_match_flags
125 * @priority: Priority of the filter, from &enum efx_filter_priority
126 * @flags: Miscellaneous flags, from &enum efx_filter_flags
127 * @rss_context: RSS context to use, if %EFX_FILTER_FLAG_RX_RSS is set. This
128 * is a user_id (with 0 meaning the driver/default RSS context), not an
130 * @dmaq_id: Source/target queue index, or %EFX_FILTER_RX_DMAQ_ID_DROP for
132 * @vport_id: Virtual port ID associated with RX queue, for adapter switching,
133 * if %EFX_FILTER_FLAG_VPORT_ID is set. This is an MCFW vport_id, or on
134 * EF100 an mport selector.
135 * @outer_vid: Outer VLAN ID to match, if %EFX_FILTER_MATCH_OUTER_VID is set
136 * @inner_vid: Inner VLAN ID to match, if %EFX_FILTER_MATCH_INNER_VID is set
137 * @loc_mac: Local MAC address to match, if %EFX_FILTER_MATCH_LOC_MAC or
138 * %EFX_FILTER_MATCH_LOC_MAC_IG is set
139 * @rem_mac: Remote MAC address to match, if %EFX_FILTER_MATCH_REM_MAC is set
140 * @ether_type: Ether-type to match, if %EFX_FILTER_MATCH_ETHER_TYPE is set
141 * @ip_proto: IP transport protocol to match, if %EFX_FILTER_MATCH_IP_PROTO
143 * @loc_host: Local IP host to match, if %EFX_FILTER_MATCH_LOC_HOST is set
144 * @rem_host: Remote IP host to match, if %EFX_FILTER_MATCH_REM_HOST is set
145 * @loc_port: Local TCP/UDP port to match, if %EFX_FILTER_MATCH_LOC_PORT is set
146 * @rem_port: Remote TCP/UDP port to match, if %EFX_FILTER_MATCH_REM_PORT is set
147 * @encap_type: Encapsulation type to match (from &enum efx_encap_type), if
148 * %EFX_FILTER_MATCH_ENCAP_TYPE is set
150 * The efx_filter_init_rx() or efx_filter_init_tx() function *must* be
151 * used to initialise the structure. The efx_filter_set_*() functions
152 * may then be used to set @rss_context, @match_flags and related
155 * The @priority field is used by software to determine whether a new
156 * filter may replace an old one. The hardware priority of a filter
157 * depends on which fields are matched.
159 struct efx_filter_spec {
166 __be16 outer_vid __aligned(4); /* allow jhash2() of match values */
168 u8 loc_mac[ETH_ALEN];
169 u8 rem_mac[ETH_ALEN];
181 EFX_FILTER_RX_DMAQ_ID_DROP = 0xfff
184 static inline void efx_filter_init_rx(struct efx_filter_spec *spec,
185 enum efx_filter_priority priority,
186 enum efx_filter_flags flags,
189 memset(spec, 0, sizeof(*spec));
190 spec->priority = priority;
191 spec->flags = EFX_FILTER_FLAG_RX | flags;
192 spec->rss_context = 0;
193 spec->dmaq_id = rxq_id;
196 static inline void efx_filter_init_tx(struct efx_filter_spec *spec,
199 memset(spec, 0, sizeof(*spec));
200 spec->priority = EFX_FILTER_PRI_REQUIRED;
201 spec->flags = EFX_FILTER_FLAG_TX;
202 spec->dmaq_id = txq_id;
206 * efx_filter_set_ipv4_local - specify IPv4 host, transport protocol and port
207 * @spec: Specification to initialise
208 * @proto: Transport layer protocol number
209 * @host: Local host address (network byte order)
210 * @port: Local port (network byte order)
213 efx_filter_set_ipv4_local(struct efx_filter_spec *spec, u8 proto,
214 __be32 host, __be16 port)
217 EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
218 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT;
219 spec->ether_type = htons(ETH_P_IP);
220 spec->ip_proto = proto;
221 spec->loc_host[0] = host;
222 spec->loc_port = port;
227 * efx_filter_set_ipv4_full - specify IPv4 hosts, transport protocol and ports
228 * @spec: Specification to initialise
229 * @proto: Transport layer protocol number
230 * @lhost: Local host address (network byte order)
231 * @lport: Local port (network byte order)
232 * @rhost: Remote host address (network byte order)
233 * @rport: Remote port (network byte order)
236 efx_filter_set_ipv4_full(struct efx_filter_spec *spec, u8 proto,
237 __be32 lhost, __be16 lport,
238 __be32 rhost, __be16 rport)
241 EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
242 EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT |
243 EFX_FILTER_MATCH_REM_HOST | EFX_FILTER_MATCH_REM_PORT;
244 spec->ether_type = htons(ETH_P_IP);
245 spec->ip_proto = proto;
246 spec->loc_host[0] = lhost;
247 spec->loc_port = lport;
248 spec->rem_host[0] = rhost;
249 spec->rem_port = rport;
254 EFX_FILTER_VID_UNSPEC = 0xffff,
258 * efx_filter_set_eth_local - specify local Ethernet address and/or VID
259 * @spec: Specification to initialise
260 * @vid: Outer VLAN ID to match, or %EFX_FILTER_VID_UNSPEC
261 * @addr: Local Ethernet MAC address, or %NULL
263 static inline int efx_filter_set_eth_local(struct efx_filter_spec *spec,
264 u16 vid, const u8 *addr)
266 if (vid == EFX_FILTER_VID_UNSPEC && addr == NULL)
269 if (vid != EFX_FILTER_VID_UNSPEC) {
270 spec->match_flags |= EFX_FILTER_MATCH_OUTER_VID;
271 spec->outer_vid = htons(vid);
274 spec->match_flags |= EFX_FILTER_MATCH_LOC_MAC;
275 ether_addr_copy(spec->loc_mac, addr);
281 * efx_filter_set_uc_def - specify matching otherwise-unmatched unicast
282 * @spec: Specification to initialise
284 static inline int efx_filter_set_uc_def(struct efx_filter_spec *spec)
286 spec->match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
291 * efx_filter_set_mc_def - specify matching otherwise-unmatched multicast
292 * @spec: Specification to initialise
294 static inline int efx_filter_set_mc_def(struct efx_filter_spec *spec)
296 spec->match_flags |= EFX_FILTER_MATCH_LOC_MAC_IG;
297 spec->loc_mac[0] = 1;
302 * efx_filter_set_vport_id - override virtual port id relating to filter
303 * @spec: Specification to initialise
304 * @vport_id: firmware ID of the virtual port
306 static inline void efx_filter_set_vport_id(struct efx_filter_spec *spec,
309 spec->flags |= EFX_FILTER_FLAG_VPORT_ID;
310 spec->vport_id = vport_id;
313 static inline void efx_filter_set_encap_type(struct efx_filter_spec *spec,
314 enum efx_encap_type encap_type)
316 spec->match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE;
317 spec->encap_type = encap_type;
320 static inline enum efx_encap_type efx_filter_get_encap_type(
321 const struct efx_filter_spec *spec)
323 if (spec->match_flags & EFX_FILTER_MATCH_ENCAP_TYPE)
324 return spec->encap_type;
325 return EFX_ENCAP_TYPE_NONE;
327 #endif /* EFX_FILTER_H */