Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 206 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c
new file mode 100644
index 000000000..a8bd0f5f7
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c
@@ -0,0 +1,206 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2012-2014, 2021-2022 Intel Corporation
+ * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2015 Intel Deutschland GmbH
+ */
+#include <net/ipv6.h>
+#include <net/addrconf.h>
+#include <linux/bitops.h>
+#include "mvm.h"
+
+void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta,
+				struct iwl_wowlan_config_cmd *cmd)
+{
+	int i;
+
+	/*
+	 * For QoS counters, we store the one to use next, so subtract 0x10
+	 * since the uCode will add 0x10 *before* using the value while we
+	 * increment after using the value (i.e. store the next value to use).
+	 */
+	for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
+		u16 seq = mvm_ap_sta->tid_data[i].seq_number;
+		seq -= 0x10;
+		cmd->qos_seq[i] = cpu_to_le16(seq);
+	}
+}
+
+int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
+			       struct ieee80211_vif *vif,
+			       bool disable_offloading,
+			       bool offload_ns,
+			       u32 cmd_flags)
+{
+	union {
+		struct iwl_proto_offload_cmd_v1 v1;
+		struct iwl_proto_offload_cmd_v2 v2;
+		struct iwl_proto_offload_cmd_v3_small v3s;
+		struct iwl_proto_offload_cmd_v4 v4;
+	} cmd = {};
+	struct iwl_host_cmd hcmd = {
+		.id = PROT_OFFLOAD_CONFIG_CMD,
+		.flags = cmd_flags,
+		.data[0] = &cmd,
+		.dataflags[0] = IWL_HCMD_DFL_DUP,
+	};
+	struct iwl_proto_offload_cmd_common *common;
+	u32 enabled = 0, size;
+	u32 capa_flags = mvm->fw->ucode_capa.flags;
+	int ver = iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 0);
+
+#if IS_ENABLED(CONFIG_IPV6)
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	int i;
+	/*
+	 * Skip tentative address when ns offload is enabled to avoid
+	 * violating RFC4862.
+	 * Keep tentative address when ns offload is disabled so the NS packets
+	 * will not be filtered out and will wake up the host.
+	 */
+	bool skip_tentative = offload_ns;
+
+	if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
+	    capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+		struct iwl_ns_config *nsc;
+		struct iwl_targ_addr *addrs;
+		int n_nsc, n_addrs;
+		int c;
+		int num_skipped = 0;
+
+		if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+			nsc = cmd.v3s.ns_config;
+			n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
+			addrs = cmd.v3s.targ_addrs;
+			n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
+		} else {
+			nsc = cmd.v4.ns_config;
+			n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
+			addrs = cmd.v4.targ_addrs;
+			n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
+		}
+
+		/*
+		 * For each address we have (and that will fit) fill a target
+		 * address struct and combine for NS offload structs with the
+		 * solicited node addresses.
+		 */
+		for (i = 0, c = 0;
+		     i < mvmvif->num_target_ipv6_addrs &&
+		     i < n_addrs && c < n_nsc; i++) {
+			struct in6_addr solicited_addr;
+			int j;
+
+			if (skip_tentative &&
+			    test_bit(i, mvmvif->tentative_addrs)) {
+				num_skipped++;
+				continue;
+			}
+
+			addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
+						  &solicited_addr);
+			for (j = 0; j < c; j++)
+				if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
+						  &solicited_addr) == 0)
+					break;
+			if (j == c)
+				c++;
+			addrs[i].addr = mvmvif->target_ipv6_addrs[i];
+			addrs[i].config_num = cpu_to_le32(j);
+			nsc[j].dest_ipv6_addr = solicited_addr;
+			memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
+		}
+
+		if (mvmvif->num_target_ipv6_addrs - num_skipped)
+			enabled |= IWL_D3_PROTO_IPV6_VALID;
+
+		if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
+			cmd.v3s.num_valid_ipv6_addrs =
+				cpu_to_le32(i - num_skipped);
+		else
+			cmd.v4.num_valid_ipv6_addrs =
+				cpu_to_le32(i - num_skipped);
+	} else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+		bool found = false;
+
+		BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
+			     sizeof(mvmvif->target_ipv6_addrs[0]));
+
+		for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
+				    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++) {
+			if (skip_tentative &&
+			    test_bit(i, mvmvif->tentative_addrs))
+				continue;
+
+			memcpy(cmd.v2.target_ipv6_addr[i],
+			       &mvmvif->target_ipv6_addrs[i],
+			       sizeof(cmd.v2.target_ipv6_addr[i]));
+
+			found = true;
+		}
+		if (found) {
+			enabled |= IWL_D3_PROTO_IPV6_VALID;
+			memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
+		}
+	} else {
+		bool found = false;
+		BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
+			     sizeof(mvmvif->target_ipv6_addrs[0]));
+
+		for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
+				    IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++) {
+			if (skip_tentative &&
+			    test_bit(i, mvmvif->tentative_addrs))
+				continue;
+
+			memcpy(cmd.v1.target_ipv6_addr[i],
+			       &mvmvif->target_ipv6_addrs[i],
+			       sizeof(cmd.v1.target_ipv6_addr[i]));
+
+			found = true;
+		}
+
+		if (found) {
+			enabled |= IWL_D3_PROTO_IPV6_VALID;
+			memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
+		}
+	}
+
+	if (offload_ns && (enabled & IWL_D3_PROTO_IPV6_VALID))
+		enabled |= IWL_D3_PROTO_OFFLOAD_NS;
+#endif
+	if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
+		common = &cmd.v3s.common;
+		size = sizeof(cmd.v3s);
+	} else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
+		common = &cmd.v4.common;
+		size = sizeof(cmd.v4);
+		if (ver < 4) {
+			/*
+			 * This basically uses iwl_proto_offload_cmd_v3_large
+			 * which doesn't have the sta_id parameter before the
+			 * common part.
+			 */
+			size -= sizeof(cmd.v4.sta_id);
+			hcmd.data[0] = common;
+		}
+	} else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
+		common = &cmd.v2.common;
+		size = sizeof(cmd.v2);
+	} else {
+		common = &cmd.v1.common;
+		size = sizeof(cmd.v1);
+	}
+
+	if (vif->cfg.arp_addr_cnt) {
+		enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID;
+		common->host_ipv4_addr = vif->cfg.arp_addr_list[0];
+		memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
+	}
+
+	if (!disable_offloading)
+		common->enabled = cpu_to_le32(enabled);
+
+	hcmd.len[0] = size;
+	return iwl_mvm_send_cmd(mvm, &hcmd);
+}