drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.h

   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
  40 struct ch_tc_flower_stats {
  41         u64 prev_packet_count;
  42         u64 packet_count;
  43         u64 byte_count;
  44         u64 last_used;
  45 };
  46
  47 struct 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
  57 enum {
  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
  83 struct 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
 111 void cxgb4_process_flow_actions(struct net_device *in,
 112                                 struct flow_action *actions,
 113                                 struct ch_filter_specification *fs);
 114 int cxgb4_validate_flow_actions(struct net_device *dev,
 115                                 struct flow_action *actions);
 116
 117 int cxgb4_tc_flower_replace(struct net_device *dev,
 118                             struct flow_cls_offload *cls);
 119 int cxgb4_tc_flower_destroy(struct net_device *dev,
 120                             struct flow_cls_offload *cls);
 121 int cxgb4_tc_flower_stats(struct net_device *dev,
 122                           struct flow_cls_offload *cls);
 123
 124 int cxgb4_init_tc_flower(struct adapter *adap);
 125 void cxgb4_cleanup_tc_flower(struct adapter *adap);
 126 #endif /* __CXGB4_TC_FLOWER_H */