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119 lines
4.0 KiB
119 lines
4.0 KiB
From 9ecf5349a3dc266355c9ae1fd74ad711515097e8 Mon Sep 17 00:00:00 2001
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From: Eugene Syromiatnikov <esyr@redhat.com>
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Date: Thu, 5 Sep 2019 18:19:11 +0200
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Subject: [PATCH 10/43] Revert "iwlwifi: mvm: don't hide HE radiotap data in
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SKB"
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This reverts commit 3619b088a87905a28d51b10172ff1e923c692cd7.
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---
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drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 47 +++++++--------------------
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1 file changed, 11 insertions(+), 36 deletions(-)
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Index: src/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
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===================================================================
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--- src.orig/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c 2019-09-06 01:25:42.023336361 +0200
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+++ src/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c 2019-09-06 01:25:42.203334065 +0200
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@@ -66,37 +66,11 @@
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#include "mvm.h"
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#include "fw-api.h"
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-static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb)
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-{
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- struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
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- u8 *data = skb->data;
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-
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- /* Alignment concerns */
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- BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4);
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- BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4);
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- BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4);
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- BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4);
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-
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- if (rx_status->flag & RX_FLAG_RADIOTAP_HE)
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- data += sizeof(struct ieee80211_radiotap_he);
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- if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU)
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- data += sizeof(struct ieee80211_radiotap_he_mu);
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- if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG)
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- data += sizeof(struct ieee80211_radiotap_lsig);
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- if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
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- struct ieee80211_vendor_radiotap *radiotap = (void *)data;
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-
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- data += sizeof(*radiotap) + radiotap->len + radiotap->pad;
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- }
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-
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- return data;
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-}
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-
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static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
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int queue, struct ieee80211_sta *sta)
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{
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struct iwl_mvm_sta *mvmsta;
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- struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
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+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
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struct iwl_mvm_key_pn *ptk_pn;
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int res;
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@@ -239,15 +213,12 @@
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{
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struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
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struct ieee80211_vendor_radiotap *radiotap;
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- const int size = sizeof(*radiotap) + sizeof(__le16);
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+ int size = sizeof(*radiotap) + sizeof(__le16);
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if (!mvm->cur_aid)
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return;
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- /* ensure alignment */
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- BUILD_BUG_ON((size + 2) % 4);
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-
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- radiotap = skb_put(skb, size + 2);
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+ radiotap = skb_put(skb, size);
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radiotap->align = 1;
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/* Intel OUI */
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radiotap->oui[0] = 0xf6;
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@@ -257,12 +228,10 @@
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radiotap->subns = 1;
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radiotap->present = 0x1;
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radiotap->len = size - sizeof(*radiotap);
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- radiotap->pad = 2;
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+ radiotap->pad = 0;
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/* fill the data now */
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memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
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- /* and clear the padding */
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- memset(radiotap->data + sizeof(__le16), 0, radiotap->pad);
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rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
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}
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@@ -710,7 +679,7 @@
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struct sk_buff *skb,
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struct iwl_rx_mpdu_desc *desc)
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{
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- struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
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+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
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struct iwl_mvm_sta *mvm_sta;
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struct iwl_mvm_baid_data *baid_data;
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struct iwl_mvm_reorder_buffer *buffer;
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@@ -1218,16 +1187,22 @@
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.flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
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IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
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};
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+ unsigned int radiotap_len = 0;
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he = skb_put_data(skb, &known, sizeof(known));
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+ radiotap_len += sizeof(known);
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rx_status->flag |= RX_FLAG_RADIOTAP_HE;
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if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
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phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
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he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
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+ radiotap_len += sizeof(mu_known);
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rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
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}
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+ /* temporarily hide the radiotap data */
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+ __skb_pull(skb, radiotap_len);
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+
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/* report the AMPDU-EOF bit on single frames */
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if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
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rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
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