diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2015-04-22 14:40:58 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-04-24 11:14:13 +0200 |
| commit | df1404650ccbfeb76a84f301f22316be0d00a864 (patch) | |
| tree | 3c866bf75c99dd402b4e152bdeefaa209f38eb8d /net/mac80211/rx.c | |
| parent | mac80211: make station hash table max_size configurable (diff) | |
| download | linux-df1404650ccbfeb76a84f301f22316be0d00a864.tar.xz linux-df1404650ccbfeb76a84f301f22316be0d00a864.zip | |
mac80211: remove support for IFF_PROMISC
This support is essentially useless as typically networks are encrypted,
frames will be filtered by hardware, and rate scaling will be done with
the intended recipient in mind. For real monitoring of the network, the
monitor mode support should be used instead.
Removing it removes a lot of corner cases.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 6e3b564b6dea..99fb5d80e60a 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2331,11 +2331,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames); ieee80211_add_pending_skb(local, fwd_skb); out: - if (is_multicast_ether_addr(hdr->addr1) || - sdata->dev->flags & IFF_PROMISC) + if (is_multicast_ether_addr(hdr->addr1)) return RX_CONTINUE; - else - return RX_DROP_MONITOR; + return RX_DROP_MONITOR; } #endif @@ -3266,12 +3264,8 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, if (!bssid && !sdata->u.mgd.use_4addr) return false; if (!multicast && - !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { - if (!(sdata->dev->flags & IFF_PROMISC) || - sdata->u.mgd.use_4addr) - return false; - status->rx_flags &= ~IEEE80211_RX_RA_MATCH; - } + !ether_addr_equal(sdata->vif.addr, hdr->addr1)) + return false; break; case NL80211_IFTYPE_ADHOC: if (!bssid) @@ -3285,9 +3279,7 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, return false; } else if (!multicast && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { - if (!(sdata->dev->flags & IFF_PROMISC)) - return false; - status->rx_flags &= ~IEEE80211_RX_RA_MATCH; + return false; } else if (!rx->sta) { int rate_idx; if (status->flag & (RX_FLAG_HT | RX_FLAG_VHT)) @@ -3309,12 +3301,7 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, } else if (!multicast && !ether_addr_equal(sdata->dev->dev_addr, hdr->addr1)) { - /* if we are in promisc mode we also accept - * packets not destined for us - */ - if (!(sdata->dev->flags & IFF_PROMISC)) - return false; - rx->flags &= ~IEEE80211_RX_RA_MATCH; + return false; } else if (!rx->sta) { int rate_idx; if (status->flag & RX_FLAG_HT) @@ -3327,12 +3314,8 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx, break; case NL80211_IFTYPE_MESH_POINT: if (!multicast && - !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { - if (!(sdata->dev->flags & IFF_PROMISC)) - return false; - - status->rx_flags &= ~IEEE80211_RX_RA_MATCH; - } + !ether_addr_equal(sdata->vif.addr, hdr->addr1)) + return false; break; case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_AP: |