From c97dab40796c59a4b03c532603e837077718fb81 Mon Sep 17 00:00:00 2001 From: Sara Sharon Date: Thu, 19 Nov 2015 11:53:49 +0200 Subject: iwlwifi: mvm: change protocol offload flows RFC4862 states that "In all cases, a node MUST NOT respond to a Neighbor Solicitation for a tentative address". Currently the driver configures the NS offload and does not wait for address to become permanent, thus violating the RFC. Just removing the address from the address list is not good enough for all cases, since the NS messages are needed for the duplicate address detection and should not be discarded. For d0i3 disable NS offload. Put tentative address in the address list so the NS packet will not be filtered out by ucode. For D3 the platform will not wake from NS packets - so enable NS offload while removing the tentative address from the list. Given that now NS offload might be disabled, and that the ucode uses the IP data for other puroposes (L3 filtering) add two independent flags indicating if IPv4\IPv6 data is valid. Signed-off-by: Sara Sharon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/d3.c') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index b1c99921c376..8824a894aab0 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -104,9 +104,13 @@ void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, struct inet6_ifaddr *ifa; int idx = 0; + memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); + read_lock_bh(&idev->lock); list_for_each_entry(ifa, &idev->addr_list, if_list) { mvmvif->target_ipv6_addrs[idx] = ifa->addr; + if (ifa->flags & IFA_F_TENTATIVE) + __set_bit(idx, mvmvif->tentative_addrs); idx++; if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) break; @@ -964,7 +968,7 @@ iwl_mvm_wowlan_config(struct iwl_mvm *mvm, if (ret) return ret; - ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0); + ret = iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); if (ret) return ret; -- cgit v1.2.3