Blame SOURCES/0084-Revert-cfg80211-make-wmm_rule-part-of-the-reg_rule-s.patch

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From a10ba457727c6da7a599619faeb440521eb467d4 Mon Sep 17 00:00:00 2001
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From: Eugene Syromiatnikov <esyr@redhat.com>
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Date: Fri, 6 Sep 2019 01:54:25 +0200
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Subject: [PATCH 7/7] Revert "cfg80211: make wmm_rule part of the reg_rule
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 structure"
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This reverts commit 38cb87ee47fb825f6c9d645c019f75b3905c0ab2.
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---
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 drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 50 +++++++++++++++++++---
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 include/net/cfg80211.h                             |  4 +-
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 include/net/regulatory.h                           |  4 +-
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 3 files changed, 49 insertions(+), 9 deletions(-)
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Index: src/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
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===================================================================
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--- src.orig/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c	2019-09-06 01:58:31.263992860 +0200
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+++ src/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c	2019-09-06 01:58:39.281889631 +0200
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@@ -879,12 +879,15 @@
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 	const u8 *nvm_chan = cfg->nvm_type == IWL_NVM_EXT ?
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 			     iwl_ext_nvm_channels : iwl_nvm_channels;
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 	struct ieee80211_regdomain *regd, *copy_rd;
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-	int size_of_regd, regd_to_copy;
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+	int size_of_regd, regd_to_copy, wmms_to_copy;
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+	int size_of_wmms = 0;
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 	struct ieee80211_reg_rule *rule;
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+	struct ieee80211_wmm_rule *wmm_rule, *d_wmm, *s_wmm;
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 	struct regdb_ptrs *regdb_ptrs;
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 	enum nl80211_band band;
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 	int center_freq, prev_center_freq = 0;
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-	int valid_rules = 0;
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+	int valid_rules = 0, n_wmms = 0;
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+	int i;
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 	bool new_rule;
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 	int max_num_ch = cfg->nvm_type == IWL_NVM_EXT ?
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 			 IWL_NVM_NUM_CHANNELS_EXT : IWL_NVM_NUM_CHANNELS;
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@@ -903,7 +906,11 @@
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 		sizeof(struct ieee80211_regdomain) +
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 		num_of_ch * sizeof(struct ieee80211_reg_rule);
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-	regd = kzalloc(size_of_regd, GFP_KERNEL);
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+	if (geo_info & GEO_WMM_ETSI_5GHZ_INFO)
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+		size_of_wmms =
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+			num_of_ch * sizeof(struct ieee80211_wmm_rule);
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+
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+	regd = kzalloc(size_of_regd + size_of_wmms, GFP_KERNEL);
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 	if (!regd)
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 		return ERR_PTR(-ENOMEM);
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@@ -917,6 +924,8 @@
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 	regd->alpha2[0] = fw_mcc >> 8;
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 	regd->alpha2[1] = fw_mcc & 0xff;
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+	wmm_rule = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd);
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+
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 	for (ch_idx = 0; ch_idx < num_of_ch; ch_idx++) {
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 		ch_flags = (u16)__le32_to_cpup(channels + ch_idx);
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 		band = (ch_idx < NUM_2GHZ_CHANNELS) ?
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@@ -970,10 +979,26 @@
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 		    band == NL80211_BAND_2GHZ)
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 			continue;
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-		reg_query_regdb_wmm(regd->alpha2, center_freq, rule);
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+		if (!reg_query_regdb_wmm(regd->alpha2, center_freq,
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+					 &regdb_ptrs[n_wmms].token, wmm_rule)) {
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+			/* Add only new rules */
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+			for (i = 0; i < n_wmms; i++) {
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+				if (regdb_ptrs[i].token ==
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+				    regdb_ptrs[n_wmms].token) {
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+					rule->wmm_rule = regdb_ptrs[i].rule;
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+					break;
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+				}
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+			}
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+			if (i == n_wmms) {
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+				rule->wmm_rule = wmm_rule;
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+				regdb_ptrs[n_wmms++].rule = wmm_rule;
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+				wmm_rule++;
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+			}
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+		}
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 	}
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 	regd->n_reg_rules = valid_rules;
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+	regd->n_wmm_rules = n_wmms;
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 	/*
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 	 * Narrow down regdom for unused regulatory rules to prevent hole
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@@ -982,13 +1007,28 @@
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 	regd_to_copy = sizeof(struct ieee80211_regdomain) +
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 		valid_rules * sizeof(struct ieee80211_reg_rule);
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-	copy_rd = kzalloc(regd_to_copy, GFP_KERNEL);
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+	wmms_to_copy = sizeof(struct ieee80211_wmm_rule) * n_wmms;
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+
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+	copy_rd = kzalloc(regd_to_copy + wmms_to_copy, GFP_KERNEL);
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 	if (!copy_rd) {
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 		copy_rd = ERR_PTR(-ENOMEM);
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 		goto out;
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 	}
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 	memcpy(copy_rd, regd, regd_to_copy);
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+	memcpy((u8 *)copy_rd + regd_to_copy, (u8 *)regd + size_of_regd,
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+	       wmms_to_copy);
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+
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+	d_wmm = (struct ieee80211_wmm_rule *)((u8 *)copy_rd + regd_to_copy);
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+	s_wmm = (struct ieee80211_wmm_rule *)((u8 *)regd + size_of_regd);
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+
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+	for (i = 0; i < regd->n_reg_rules; i++) {
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+		if (!regd->reg_rules[i].wmm_rule)
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+			continue;
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+
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+		copy_rd->reg_rules[i].wmm_rule = d_wmm +
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+			(regd->reg_rules[i].wmm_rule - s_wmm);
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+	}
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 out:
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 	kfree(regdb_ptrs);