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Please, take a look at the cover letter for more details). Signed-off-by: Viktor Barna --- drivers/net/wireless/celeno/cl8k/traffic.c | 315 +++++++++++++++++++++ 1 file changed, 315 insertions(+) create mode 100644 drivers/net/wireless/celeno/cl8k/traffic.c diff --git a/drivers/net/wireless/celeno/cl8k/traffic.c b/drivers/net/wirel= ess/celeno/cl8k/traffic.c new file mode 100644 index 000000000000..19d91eb3e999 --- /dev/null +++ b/drivers/net/wireless/celeno/cl8k/traffic.c @@ -0,0 +1,315 @@ +// SPDX-License-Identifier: MIT +/* Copyright(c) 2019-2021, Celeno Communications Ltd. */ + +#include "traffic.h" +#include "env_det.h" +#include "edca.h" +#include "bf.h" +#include "prot_mode.h" +#include "band.h" +#include "utils/utils.h" +#include "rsrc_mgmt.h" + +#define TRAFFIC_CNTR_ACTIVE_THR 3 /* 3 * 100ms =3D 300ms */ +#define TRAFFIC_CNTR_IDLE_THR 20 /* 20 * 100ms =3D 2sec */ + +/* Threshold in bytes */ +#define TRAFFIC_ACTIVE_THR_DRV 1920 /* =3D 150Kbit/sec (150 * 1024= / 8 / 10) */ +#define TRAFFIC_ACTIVE_THR_BF 26214 /* =3D 2mbit/sec (2 * 1024 * 1= 024 / 8 / 10) */ +#define TRAFFIC_ACTIVE_THR_EDCA_6G 2621440 /* =3D 200mbit/sec (200 * 1024= * 1024 / 8 / 10) */ +#define TRAFFIC_ACTIVE_THR_EDCA_5G 2621440 /* =3D 200mbit/sec (200 * 1024= * 1024 / 8 / 10) */ +#define TRAFFIC_ACTIVE_THR_EDCA_24G 655360 /* =3D 50mbit/sec (50 * 1024 *= 1024 / 8 / 10) */ +#define TRAFFIC_ACTIVE_THR_DFS 13107 /* =3D 1mbit/sec (1 * 1024 * 1= 024 / 8 / 10) */ + +static const char *level_str[TRAFFIC_LEVEL_MAX] =3D { + [TRAFFIC_LEVEL_DRV] =3D "DRV", + [TRAFFIC_LEVEL_BF] =3D "BF", + [TRAFFIC_LEVEL_EDCA] =3D "EDCA", + [TRAFFIC_LEVEL_DFS] =3D "DFS" +}; + +static void cl_traffic_sta_start(struct cl_hw *cl_hw, struct cl_sta *cl_st= a, + enum cl_traffic_level level, enum cl_traff= ic_direction direction) +{ + cl_hw->traffic_db.num_active_sta_dir[direction][level]++; + + /* If other direction is not active increase num_active_sta */ + if (!cl_sta->traffic_db[1 - direction].activity_db[level].is_active= ) + cl_hw->traffic_db.num_active_sta[level]++; + + if (level =3D=3D TRAFFIC_LEVEL_DRV) { + /* + * Dynamic CTS: + * If protection mode is disabled, environment is clean + * and station threshold was reached switch to CTS. + */ + if (cl_hw->traffic_db.num_active_sta[TRAFFIC_LEVEL_DRV] =3D= =3D + cl_hw->conf->ci_dyn_cts_sta_thr) + if (cl_env_det_is_clean(cl_hw) && + (cl_prot_mode_get(cl_hw) =3D=3D TXL_NO_PROT)) { + cl_hw->traffic_db.dynamic_cts =3D true; + cl_prot_mode_set(cl_hw, TXL_PROT_CTS); + } + } else if (level =3D=3D TRAFFIC_LEVEL_BF) { + if (direction =3D=3D TRAFFIC_DIRECTION_TX) + cl_bf_sta_active(cl_hw, cl_sta, true); + } else if (level =3D=3D TRAFFIC_LEVEL_EDCA) { + /* No action */ + } + + cl_rsrc_mgmt_traffic_start(cl_hw, level, direction); +} + +static void cl_traffic_sta_stop(struct cl_hw *cl_hw, struct cl_sta *cl_sta= , + enum cl_traffic_level level, enum cl_traffi= c_direction direction) +{ + cl_hw->traffic_db.num_active_sta_dir[direction][level]--; + + /* If other direction is not active decrease num_active_sta */ + if (!cl_sta->traffic_db[1 - direction].activity_db[level].is_active= ) + cl_hw->traffic_db.num_active_sta[level]--; + + if (level =3D=3D TRAFFIC_LEVEL_DRV) { + /* + * Dynamic CTS: + * If it was turned on and active station count became lowe= r than + * threshold --> return to no protection + */ + if (cl_hw->traffic_db.dynamic_cts) { + if (cl_hw->traffic_db.num_active_sta[TRAFFIC_LEVEL_= DRV] =3D=3D + (cl_hw->conf->ci_dyn_cts_sta_thr - 1)) { + cl_hw->traffic_db.dynamic_cts =3D false; + cl_prot_mode_set(cl_hw, TXL_NO_PROT); + } + } + } else if (level =3D=3D TRAFFIC_LEVEL_BF) { + if (direction =3D=3D TRAFFIC_DIRECTION_TX) + cl_bf_sta_active(cl_hw, cl_sta, false); + } else if (level =3D=3D TRAFFIC_LEVEL_EDCA) { + /* No action */ + } + + cl_rsrc_mgmt_traffic_stop(cl_hw, level, direction); +} + +static void cl_traffic_check_activity(struct cl_hw *cl_hw, struct cl_sta *= cl_sta, + enum cl_traffic_level level, + enum cl_traffic_direction direction) +{ + struct cl_traffic_activity *activity_db =3D + &cl_sta->traffic_db[direction].activity_db[level]; + u32 num_bytes =3D cl_sta->traffic_db[direction].num_bytes; + + if (num_bytes > cl_hw->traffic_db.active_bytes_thr[level]) { + activity_db->cntr_active++; + activity_db->cntr_idle =3D 0; + + /* If traffic is above threshold for X consecutive times ch= ange state to active */ + if (!activity_db->is_active && + activity_db->cntr_active >=3D TRAFFIC_CNTR_ACTIVE_THR) = { + activity_db->is_active =3D true; + cl_traffic_sta_start(cl_hw, cl_sta, level, directio= n); + } + } else { + activity_db->cntr_active =3D 0; + activity_db->cntr_idle++; + + /* If traffic is below threshold for Y consecutive times ch= ange state to idle */ + if (activity_db->is_active && activity_db->cntr_idle >=3D T= RAFFIC_CNTR_IDLE_THR) { + activity_db->is_active =3D false; + cl_traffic_sta_stop(cl_hw, cl_sta, level, direction= ); + } + } +} + +static void cl_traffic_maintenance_sta(struct cl_hw *cl_hw, struct cl_sta = *cl_sta) +{ + enum cl_traffic_level level =3D 0; + + /* Check Tx & Rx activity in all levels */ + for (level =3D 0; level < TRAFFIC_LEVEL_MAX; level++) { + cl_traffic_check_activity(cl_hw, cl_sta, level, TRAFFIC_DIR= ECTION_TX); + cl_traffic_check_activity(cl_hw, cl_sta, level, TRAFFIC_DIR= ECTION_RX); + } + + /* Reset num_bytes */ + cl_sta->traffic_db[TRAFFIC_DIRECTION_TX].num_bytes =3D 0; + cl_sta->traffic_db[TRAFFIC_DIRECTION_RX].num_bytes =3D 0; +} + +static int cl_traffic_print_state(struct cl_hw *cl_hw, + enum cl_traffic_level level) +{ + struct cl_sta *cl_sta =3D NULL; + char *buf =3D NULL; + ssize_t buf_size; + int err =3D 0; + int len =3D 0; + struct cl_traffic_main *db =3D &cl_hw->traffic_db; + + if (level >=3D TRAFFIC_LEVEL_MAX) { + cl_snprintf(&buf, &len, &buf_size, + "invalid level %d\n", level); + goto out; + } + + cl_snprintf(&buf, &len, &buf_size, + "Level %s (%d)\n", level_str[level], level); + cl_snprintf(&buf, &len, &buf_size, + "Active stations - %u\n", + db->num_active_sta[level]); + cl_snprintf(&buf, &len, &buf_size, + "Active stations TX - %u\n", + db->num_active_sta_dir[TRAFFIC_DIRECTION_TX][level]); + cl_snprintf(&buf, &len, &buf_size, + "Active stations RX - %u\n", + db->num_active_sta_dir[TRAFFIC_DIRECTION_RX][level]); + + if (db->num_active_sta[level] =3D=3D 0) + goto out; + + cl_snprintf(&buf, &len, &buf_size, + "|---------------------|\n" + "|Sta|ActiveTx|ActiveRx|\n" + "|---------------------|\n"); + + /* Go over all stations */ + cl_sta_lock_bh(cl_hw); + + list_for_each_entry(cl_sta, &cl_hw->cl_sta_db.head, list) + cl_snprintf(&buf, &len, &buf_size, + "|%3u|%-8s|%-8s|\n", + cl_sta->sta_idx, + cl_sta->traffic_db[TRAFFIC_DIRECTION_TX].activi= ty_db[level].is_active ? + "True" : "False", + cl_sta->traffic_db[TRAFFIC_DIRECTION_RX].activi= ty_db[level].is_active ? + "True" : "False"); + + cl_sta_unlock_bh(cl_hw); + + cl_snprintf(&buf, &len, &buf_size, + "|---------------------|\n"); +out: + err =3D cl_vendor_reply(cl_hw, buf, strlen(buf)); + kfree(buf); + + return err; +} + +static int cl_traffic_cli_help(struct cl_hw *cl_hw) +{ + char *buf =3D kzalloc(PAGE_SIZE, GFP_KERNEL); + int err =3D 0; + + if (!buf) + return -ENOMEM; + + snprintf(buf, PAGE_SIZE, + "traffic usage:\n" + "-s : Print traffic state [0-drv/1-bf/2-edca/3-dfs]\n"); + + err =3D cl_vendor_reply(cl_hw, buf, strlen(buf)); + kfree(buf); + + return err; +} + +void cl_traffic_init(struct cl_hw *cl_hw) +{ + struct cl_traffic_main *traffic_db =3D &cl_hw->traffic_db; + + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_DRV] =3D TRAFFIC_ACTIVE_= THR_DRV; + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_BF] =3D TRAFFIC_ACTIVE_T= HR_BF; + + if (cl_band_is_6g(cl_hw)) + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_EDCA] =3D TRAFFI= C_ACTIVE_THR_EDCA_6G; + else if (cl_band_is_5g(cl_hw)) + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_EDCA] =3D TRAFFI= C_ACTIVE_THR_EDCA_5G; + else + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_EDCA] =3D TRAFFI= C_ACTIVE_THR_EDCA_24G; + + traffic_db->active_bytes_thr[TRAFFIC_LEVEL_DFS] =3D TRAFFIC_ACTIVE_= THR_DFS; +} + +void cl_traffic_tx_handler(struct cl_hw *cl_hw, struct cl_sta *cl_sta, u32= num_bytes) +{ + cl_sta->traffic_db[TRAFFIC_DIRECTION_TX].num_bytes +=3D num_bytes; +} + +void cl_traffic_rx_handler(struct cl_hw *cl_hw, struct cl_sta *cl_sta, u32= num_bytes) +{ + cl_sta->traffic_db[TRAFFIC_DIRECTION_RX].num_bytes +=3D num_bytes; +} + +void cl_traffic_maintenance(struct cl_hw *cl_hw) +{ + cl_sta_loop(cl_hw, cl_traffic_maintenance_sta); +} + +void cl_traffic_sta_remove(struct cl_hw *cl_hw, struct cl_sta *cl_sta) +{ + /* Check if station disconnected during traffic */ + enum cl_traffic_level level =3D 0; + enum cl_traffic_direction direction =3D 0; + + for (direction =3D 0; direction < TRAFFIC_DIRECTION_MAX; direction+= +) { + for (level =3D 0; level < TRAFFIC_LEVEL_MAX; level++) { + if (cl_sta->traffic_db[direction].activity_db[level= ].is_active) + cl_traffic_sta_stop(cl_hw, cl_sta, level, d= irection); + } + + memset(&cl_sta->traffic_db, 0, sizeof(cl_sta->traffic_db)); + } +} + +bool cl_traffic_is_sta_active(struct cl_hw *cl_hw, struct cl_sta *cl_sta) +{ + return (cl_sta->traffic_db[TRAFFIC_DIRECTION_TX].activity_db[TRAFFI= C_LEVEL_DRV].is_active || + cl_sta->traffic_db[TRAFFIC_DIRECTION_RX].activity_db[TRAFFI= C_LEVEL_DRV].is_active); +} + +bool cl_traffic_is_sta_active_tx(struct cl_hw *cl_hw, struct cl_sta *cl_st= a) +{ + return cl_sta->traffic_db[TRAFFIC_DIRECTION_TX].activity_db[TRAFFIC= _LEVEL_DRV].is_active; +} + +u32 cl_traffic_num_active_sta(struct cl_hw *cl_hw) +{ + return cl_hw->traffic_db.num_active_sta[TRAFFIC_LEVEL_DRV]; +} + +u32 cl_traffic_num_active_dfs(struct cl_hw *cl_hw) +{ + return cl_hw->traffic_db.num_active_sta[TRAFFIC_LEVEL_DFS]; +} + +int cl_traffic_cli(struct cl_hw *cl_hw, struct cli_params *cli_params) +{ + bool print_state =3D false; + int expected_params =3D -1; + + switch (cli_params->option) { + case 's': + print_state =3D true; + expected_params =3D 1; + break; + case '?': + return cl_traffic_cli_help(cl_hw); + default: + cl_dbg_err(cl_hw, "Illegal option (%c) - try '?' for help\n= ", cli_params->option); + goto out_err; + } + + if (expected_params !=3D cli_params->num_params) { + cl_dbg_err(cl_hw, "Wrong number of arguments (expected %u) = (actual %u)\n", + expected_params, cli_params->num_params); + goto out_err; + } + + if (print_state) + return cl_traffic_print_state(cl_hw, + (u8)(cli_params->params[0])); + +out_err: + return -EIO; +} -- 2.30.0 ________________________________ The information transmitted is intended only for the person or entity to wh= ich it is addressed and may contain confidential and/or privileged material= . Any retransmission, dissemination, copying or other use of, or taking of = any action in reliance upon this information is prohibited. If you received= this in error, please contact the sender and delete the material from any = computer. Nothing contained herein shall be deemed as a representation, war= ranty or a commitment by Celeno. No warranties are expressed or implied, in= cluding, but not limited to, any implied warranties of non-infringement, me= rchantability and fitness for a particular purpose. ________________________________