LXR linux/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc

   1/*
   2 * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux.
   3 *
   4 * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved.
   5 *
   6 * This software is available to you under a choice of one of two
   7 * licenses.  You may choose to be licensed under the terms of the GNU
   8 * General Public License (GPL) Version 2, available from the file
   9 * COPYING in the main directory of this source tree, or the
  10 * OpenIB.org BSD license below:
  11 *
  12 *     Redistribution and use in source and binary forms, with or
  13 *     without modification, are permitted provided that the following
  14 *     conditions are met:
  15 *
  16 *      - Redistributions of source code must retain the above
  17 *        copyright notice, this list of conditions and the following
  18 *        disclaimer.
  19 *
  20 *      - Redistributions in binary form must reproduce the above
  21 *        copyright notice, this list of conditions and the following
  22 *        disclaimer in the documentation and/or other materials
  23 *        provided with the distribution.
  24 *
  25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32 * SOFTWARE.
  33 */
  34
  35#ifndef __CXGB4_TC_FLOWER_H
  36#define __CXGB4_TC_FLOWER_H
  37
  38#include <net/pkt_cls.h>
  39
  40struct ch_tc_flower_stats {
  41        u64 prev_packet_count;
  42        u64 packet_count;
  43        u64 byte_count;
  44        u64 last_used;
  45};
  46
  47struct ch_tc_flower_entry {
  48        struct ch_filter_specification fs;
  49        struct ch_tc_flower_stats stats;
  50        unsigned long tc_flower_cookie;
  51        struct rhash_head node;
  52        struct rcu_head rcu;
  53        spinlock_t lock; /* lock for stats */
  54        u32 filter_id;
  55};
  56
  57enum {
  58        ETH_DMAC_31_0,  /* dmac bits 0.. 31 */
  59        ETH_DMAC_47_32, /* dmac bits 32..47 */
  60        ETH_SMAC_15_0,  /* smac bits 0.. 15 */
  61        ETH_SMAC_47_16, /* smac bits 16..47 */
  62
  63        IP4_SRC,        /* 32-bit IPv4 src  */
  64        IP4_DST,        /* 32-bit IPv4 dst  */
  65
  66        IP6_SRC_31_0,   /* src bits 0..  31 */
  67        IP6_SRC_63_32,  /* src bits 63.. 32 */
  68        IP6_SRC_95_64,  /* src bits 95.. 64 */
  69        IP6_SRC_127_96, /* src bits 127..96 */
  70
  71        IP6_DST_31_0,   /* dst bits 0..  31 */
  72        IP6_DST_63_32,  /* dst bits 63.. 32 */
  73        IP6_DST_95_64,  /* dst bits 95.. 64 */
  74        IP6_DST_127_96, /* dst bits 127..96 */
  75
  76        TCP_SPORT,      /* 16-bit TCP sport */
  77        TCP_DPORT,      /* 16-bit TCP dport */
  78
  79        UDP_SPORT,      /* 16-bit UDP sport */
  80        UDP_DPORT,      /* 16-bit UDP dport */
  81};
  82
  83struct ch_tc_pedit_fields {
  84        u8 field;
  85        u8 size;
  86        u32 offset;
  87};
  88
  89#define PEDIT_FIELDS(type, field, size, fs_field, offset) \
  90        { type## field, size, \
  91                offsetof(struct ch_filter_specification, fs_field) + (offset) }
  92
  93#define PEDIT_ETH_DMAC_MASK             0xffff
  94#define PEDIT_TCP_UDP_SPORT_MASK        0xffff
  95#define PEDIT_ETH_DMAC_31_0             0x0
  96#define PEDIT_ETH_DMAC_47_32_SMAC_15_0  0x4
  97#define PEDIT_ETH_SMAC_47_16            0x8
  98#define PEDIT_IP4_SRC                   0xC
  99#define PEDIT_IP4_DST                   0x10
 100#define PEDIT_IP6_SRC_31_0              0x8
 101#define PEDIT_IP6_SRC_63_32             0xC
 102#define PEDIT_IP6_SRC_95_64             0x10
 103#define PEDIT_IP6_SRC_127_96            0x14
 104#define PEDIT_IP6_DST_31_0              0x18
 105#define PEDIT_IP6_DST_63_32             0x1C
 106#define PEDIT_IP6_DST_95_64             0x20
 107#define PEDIT_IP6_DST_127_96            0x24
 108#define PEDIT_TCP_SPORT_DPORT           0x0
 109#define PEDIT_UDP_SPORT_DPORT           0x0
 110
 111void cxgb4_process_flow_actions(struct net_device *in,
 112                                struct flow_action *actions,
 113                                struct ch_filter_specification *fs);
 114int cxgb4_validate_flow_actions(struct net_device *dev,
 115                                struct flow_action *actions,
 116                                struct netlink_ext_ack *extack,
 117                                u8 matchall_filter);
 118
 119int cxgb4_tc_flower_replace(struct net_device *dev,
 120                            struct flow_cls_offload *cls);
 121int cxgb4_tc_flower_destroy(struct net_device *dev,
 122                            struct flow_cls_offload *cls);
 123int cxgb4_tc_flower_stats(struct net_device *dev,
 124                          struct flow_cls_offload *cls);
 125int cxgb4_flow_rule_replace(struct net_device *dev, struct flow_rule *rule,
 126                            u32 tc_prio, struct netlink_ext_ack *extack,
 127                            struct ch_filter_specification *fs, u32 *tid);
 128int cxgb4_flow_rule_destroy(struct net_device *dev, u32 tc_prio,
 129                            struct ch_filter_specification *fs, int tid);
 130
 131int cxgb4_init_tc_flower(struct adapter *adap);
 132void cxgb4_cleanup_tc_flower(struct adapter *adap);
 133#endif /* __CXGB4_TC_FLOWER_H */
 134