diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/offloading.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/offloading.c | 74 |
1 files changed, 56 insertions, 18 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c index f83e2bc6d0d5..6338d9cf7070 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/offloading.c @@ -7,6 +7,7 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH + * Copyright(c) 2015 Intel Deutschland GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as @@ -33,6 +34,7 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH + * Copyright(c) 2015 Intel Deutschland GmbH * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -64,6 +66,7 @@ *****************************************************************************/ #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, @@ -86,6 +89,7 @@ void iwl_mvm_set_wowlan_qos_seq(struct iwl_mvm_sta *mvm_ap_sta, int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool disable_offloading, + bool offload_ns, u32 cmd_flags) { union { @@ -106,6 +110,13 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, #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) { @@ -113,6 +124,7 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 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; @@ -126,9 +138,6 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L; } - if (mvmvif->num_target_ipv6_addrs) - enabled |= IWL_D3_PROTO_OFFLOAD_NS; - /* * For each address we have (and that will fit) fill a target * address struct and combine for NS offload structs with the @@ -140,6 +149,12 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 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++) @@ -154,41 +169,64 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, 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); + cmd.v3s.num_valid_ipv6_addrs = + cpu_to_le32(i - num_skipped); else - cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i); + cmd.v3l.num_valid_ipv6_addrs = + cpu_to_le32(i - num_skipped); } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) { - if (mvmvif->num_target_ipv6_addrs) { - enabled |= IWL_D3_PROTO_OFFLOAD_NS; - memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN); - } + 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++) + 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])); - } else { - if (mvmvif->num_target_ipv6_addrs) { - enabled |= IWL_D3_PROTO_OFFLOAD_NS; - memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN); - } + 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++) + 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); + } } -#endif + 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); @@ -204,7 +242,7 @@ int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, } if (vif->bss_conf.arp_addr_cnt) { - enabled |= IWL_D3_PROTO_OFFLOAD_ARP; + enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID; common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN); } |