109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
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* Copyright (c) 2013-2015, Mellanox Technologies, Ltd. All rights reserved.
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* Copyright (c) 2017-2018, Broadcom Limited. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef NET_DIM_H
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#define NET_DIM_H
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struct net_dim_cq_moder {
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u16 usec;
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u16 pkts;
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u8 cq_period_mode;
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};
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struct net_dim_sample {
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ktime_t time;
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u32 pkt_ctr;
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u32 byte_ctr;
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u16 event_ctr;
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};
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struct net_dim_stats {
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int ppms; /* packets per msec */
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int bpms; /* bytes per msec */
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int epms; /* events per msec */
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};
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struct net_dim { /* Adaptive Moderation */
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u8 state;
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struct net_dim_stats prev_stats;
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struct net_dim_sample start_sample;
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struct work_struct work;
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u8 profile_ix;
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u8 mode;
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u8 tune_state;
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u8 steps_right;
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u8 steps_left;
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u8 tired;
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};
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enum {
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NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE = 0x0,
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NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE = 0x1,
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NET_DIM_CQ_PERIOD_NUM_MODES
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};
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/* Adaptive moderation logic */
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enum {
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NET_DIM_START_MEASURE,
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NET_DIM_MEASURE_IN_PROGRESS,
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NET_DIM_APPLY_NEW_PROFILE,
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};
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enum {
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NET_DIM_PARKING_ON_TOP,
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NET_DIM_PARKING_TIRED,
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NET_DIM_GOING_RIGHT,
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NET_DIM_GOING_LEFT,
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};
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enum {
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NET_DIM_STATS_WORSE,
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NET_DIM_STATS_SAME,
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NET_DIM_STATS_BETTER,
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};
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enum {
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NET_DIM_STEPPED,
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NET_DIM_TOO_TIRED,
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NET_DIM_ON_EDGE,
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};
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void net_dim(struct net_dim *dim,
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u16 event_ctr,
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u64 packets,
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u64 bytes);
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struct net_dim_cq_moder net_dim_get_def_profile(u8 rx_cq_period_mode);
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struct net_dim_cq_moder net_dim_get_profile(u8 cq_period_mode, int ix);
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#endif /* NET_DIM_H */
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