From f714fe46a97a8a0b1404bc6e58c45a281b97b099 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 10 Jan 2017 17:18:01 +0100 Subject: [PATCH] mac80211: pending brcmfmac patches cleaning channels management MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit They prepare brcmfmac for using wiphy_read_of_freq_limits. Signed-off-by: Rafał Miłecki --- ...riting-channel-out-of-allocated-arra.patch | 100 ++++++++++++++++++ ...on-t-preset-all-channels-as-disabled.patch | 34 ++++++ ...iphy-bands-after-registering-it-firs.patch | 49 +++++++++ ...mac-make-brcmf_of_probe-more-generic.patch | 72 +++++++++++++ ...und-bug-with-some-inconsistent-BSSes.patch | 2 +- ...62-brcmfmac-Disable-power-management.patch | 2 +- 6 files changed, 257 insertions(+), 2 deletions(-) create mode 100644 package/kernel/mac80211/patches/840-brcmfmac-avoid-writing-channel-out-of-allocated-arra.patch create mode 100644 package/kernel/mac80211/patches/841-brcmfmac-don-t-preset-all-channels-as-disabled.patch create mode 100644 package/kernel/mac80211/patches/842-brcmfmac-setup-wiphy-bands-after-registering-it-firs.patch create mode 100644 package/kernel/mac80211/patches/843-brcmfmac-make-brcmf_of_probe-more-generic.patch diff --git a/package/kernel/mac80211/patches/840-brcmfmac-avoid-writing-channel-out-of-allocated-arra.patch b/package/kernel/mac80211/patches/840-brcmfmac-avoid-writing-channel-out-of-allocated-arra.patch new file mode 100644 index 0000000000..8456a1364c --- /dev/null +++ b/package/kernel/mac80211/patches/840-brcmfmac-avoid-writing-channel-out-of-allocated-arra.patch @@ -0,0 +1,100 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Wed, 4 Jan 2017 12:09:41 +0100 +Subject: [PATCH] brcmfmac: avoid writing channel out of allocated array +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Our code was assigning number of channels to the index variable by +default. If firmware reported channel we didn't predict this would +result in using that initial index value and writing out of array. This +never happened so far (we got a complete list of supported channels) but +it means possible memory corruption so we should handle it anyway. + +This patch simply detects unexpected channel and ignores it. + +As we don't try to create new entry now, it's also safe to drop hw_value +and center_freq assignment. For known channels we have these set anyway. + +I decided to fix this issue by assigning NULL or a target channel to the +channel variable. This was one of possible ways, I prefefred this one as +it also avoids using channel[index] over and over. + +Fixes: 58de92d2f95e ("brcmfmac: use static superset of channels for wiphy bands") +Signed-off-by: Rafał Miłecki +Acked-by: Arend van Spriel +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +@@ -5913,7 +5913,6 @@ static int brcmf_construct_chaninfo(stru + u32 i, j; + u32 total; + u32 chaninfo; +- u32 index; + + pbuf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL); + +@@ -5961,33 +5960,36 @@ static int brcmf_construct_chaninfo(stru + ch.bw == BRCMU_CHAN_BW_80) + continue; + +- channel = band->channels; +- index = band->n_channels; ++ channel = NULL; + for (j = 0; j < band->n_channels; j++) { +- if (channel[j].hw_value == ch.control_ch_num) { +- index = j; ++ if (band->channels[j].hw_value == ch.control_ch_num) { ++ channel = &band->channels[j]; + break; + } + } +- channel[index].center_freq = +- ieee80211_channel_to_frequency(ch.control_ch_num, +- band->band); +- channel[index].hw_value = ch.control_ch_num; ++ if (!channel) { ++ /* It seems firmware supports some channel we never ++ * considered. Something new in IEEE standard? ++ */ ++ brcmf_err("Ignoring unexpected firmware channel %d\n", ++ ch.control_ch_num); ++ continue; ++ } + + /* assuming the chanspecs order is HT20, + * HT40 upper, HT40 lower, and VHT80. + */ + if (ch.bw == BRCMU_CHAN_BW_80) { +- channel[index].flags &= ~IEEE80211_CHAN_NO_80MHZ; ++ channel->flags &= ~IEEE80211_CHAN_NO_80MHZ; + } else if (ch.bw == BRCMU_CHAN_BW_40) { +- brcmf_update_bw40_channel_flag(&channel[index], &ch); ++ brcmf_update_bw40_channel_flag(channel, &ch); + } else { + /* enable the channel and disable other bandwidths + * for now as mentioned order assure they are enabled + * for subsequent chanspecs. + */ +- channel[index].flags = IEEE80211_CHAN_NO_HT40 | +- IEEE80211_CHAN_NO_80MHZ; ++ channel->flags = IEEE80211_CHAN_NO_HT40 | ++ IEEE80211_CHAN_NO_80MHZ; + ch.bw = BRCMU_CHAN_BW_20; + cfg->d11inf.encchspec(&ch); + chaninfo = ch.chspec; +@@ -5995,11 +5997,11 @@ static int brcmf_construct_chaninfo(stru + &chaninfo); + if (!err) { + if (chaninfo & WL_CHAN_RADAR) +- channel[index].flags |= ++ channel->flags |= + (IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR); + if (chaninfo & WL_CHAN_PASSIVE) +- channel[index].flags |= ++ channel->flags |= + IEEE80211_CHAN_NO_IR; + } + } diff --git a/package/kernel/mac80211/patches/841-brcmfmac-don-t-preset-all-channels-as-disabled.patch b/package/kernel/mac80211/patches/841-brcmfmac-don-t-preset-all-channels-as-disabled.patch new file mode 100644 index 0000000000..4d2c4b03ea --- /dev/null +++ b/package/kernel/mac80211/patches/841-brcmfmac-don-t-preset-all-channels-as-disabled.patch @@ -0,0 +1,34 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Sat, 7 Jan 2017 21:36:04 +0100 +Subject: [PATCH] brcmfmac: don't preset all channels as disabled +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +During init we take care of regulatory stuff by disabling all +unavailable channels (see brcmf_construct_chaninfo) so this predisabling +them is not really required (and this patch won't change any behavior). +It will on the other hand allow more detailed runtime control over +channels which is the main reason for this change. + +Signed-off-by: Rafał Miłecki +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +@@ -147,7 +147,6 @@ static struct ieee80211_rate __wl_rates[ + .band = NL80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_channel), \ +- .flags = IEEE80211_CHAN_DISABLED, \ + .max_antenna_gain = 0, \ + .max_power = 30, \ + } +@@ -156,7 +155,6 @@ static struct ieee80211_rate __wl_rates[ + .band = NL80211_BAND_5GHZ, \ + .center_freq = 5000 + (5 * (_channel)), \ + .hw_value = (_channel), \ +- .flags = IEEE80211_CHAN_DISABLED, \ + .max_antenna_gain = 0, \ + .max_power = 30, \ + } diff --git a/package/kernel/mac80211/patches/842-brcmfmac-setup-wiphy-bands-after-registering-it-firs.patch b/package/kernel/mac80211/patches/842-brcmfmac-setup-wiphy-bands-after-registering-it-firs.patch new file mode 100644 index 0000000000..2826c733ba --- /dev/null +++ b/package/kernel/mac80211/patches/842-brcmfmac-setup-wiphy-bands-after-registering-it-firs.patch @@ -0,0 +1,49 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Sat, 7 Jan 2017 21:36:05 +0100 +Subject: [PATCH] brcmfmac: setup wiphy bands after registering it first +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +During bands setup we disable all channels that firmware doesn't support +in the current regulatory setup. If we do this before wiphy_register +it will result in copying set flags (including IEEE80211_CHAN_DISABLED) +to the orig_flags which is supposed to be persistent. We don't want this +as regulatory change may result in enabling some channels. We shouldn't +mess with orig_flags then (by changing them or ignoring them) so it's +better to just take care of their proper values. + +This patch cleanups code a bit (by taking orig_flags more seriously) and +allows further improvements like disabling really unavailable channels. +We will need that e.g. if some frequencies should be disabled for good +due to hardware setup (design). + +Signed-off-by: Rafał Miłecki +Acked-by: Arend van Spriel +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +@@ -6564,8 +6564,7 @@ static int brcmf_setup_wiphy(struct wiph + wiphy->bands[NL80211_BAND_5GHZ] = band; + } + } +- err = brcmf_setup_wiphybands(wiphy); +- return err; ++ return 0; + } + + static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg) +@@ -6930,6 +6929,12 @@ struct brcmf_cfg80211_info *brcmf_cfg802 + goto priv_out; + } + ++ err = brcmf_setup_wiphybands(wiphy); ++ if (err) { ++ brcmf_err("Setting wiphy bands failed (%d)\n", err); ++ goto wiphy_unreg_out; ++ } ++ + /* If cfg80211 didn't disable 40MHz HT CAP in wiphy_register(), + * setup 40MHz in 2GHz band and enable OBSS scanning. + */ diff --git a/package/kernel/mac80211/patches/843-brcmfmac-make-brcmf_of_probe-more-generic.patch b/package/kernel/mac80211/patches/843-brcmfmac-make-brcmf_of_probe-more-generic.patch new file mode 100644 index 0000000000..9e07d4a38c --- /dev/null +++ b/package/kernel/mac80211/patches/843-brcmfmac-make-brcmf_of_probe-more-generic.patch @@ -0,0 +1,72 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Sat, 7 Jan 2017 23:43:45 +0100 +Subject: [PATCH] brcmfmac: make brcmf_of_probe more generic +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +We may want to use Open Firmware for other devices than just SDIO ones. +In future we may want to support more Broadcom properties so there is +really no reason for such limitation. + +Call brcmf_of_probe for all kind of devices & move extra conditions to +the body of that funcion. + +Signed-off-by: Rafał Miłecki +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +@@ -299,11 +299,9 @@ struct brcmf_mp_device *brcmf_get_module + } + } + } +- if ((bus_type == BRCMF_BUSTYPE_SDIO) && (!found)) { +- /* No platform data for this device. In case of SDIO try OF +- * (Open Firwmare) Device Tree. +- */ +- brcmf_of_probe(dev, &settings->bus.sdio); ++ if (!found) { ++ /* No platform data for this device, try OF (Open Firwmare) */ ++ brcmf_of_probe(dev, bus_type, settings); + } + return settings; + } +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c +@@ -23,14 +23,17 @@ + #include "common.h" + #include "of.h" + +-void brcmf_of_probe(struct device *dev, struct brcmfmac_sdio_pd *sdio) ++void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, ++ struct brcmf_mp_device *settings) + { ++ struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; + struct device_node *np = dev->of_node; + int irq; + u32 irqf; + u32 val; + +- if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac")) ++ if (!np || bus_type != BRCMF_BUSTYPE_SDIO || ++ !of_device_is_compatible(np, "brcm,bcm4329-fmac")) + return; + + if (of_property_read_u32(np, "brcm,drive-strength", &val) == 0) +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.h ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.h +@@ -14,9 +14,11 @@ + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + #ifdef CONFIG_OF +-void brcmf_of_probe(struct device *dev, struct brcmfmac_sdio_pd *sdio); ++void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, ++ struct brcmf_mp_device *settings); + #else +-static void brcmf_of_probe(struct device *dev, struct brcmfmac_sdio_pd *sdio) ++static void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, ++ struct brcmf_mp_device *settings) + { + } + #endif /* CONFIG_OF */ diff --git a/package/kernel/mac80211/patches/861-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch b/package/kernel/mac80211/patches/861-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch index 87211550f7..7551b7dfa3 100644 --- a/package/kernel/mac80211/patches/861-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch +++ b/package/kernel/mac80211/patches/861-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch @@ -10,7 +10,7 @@ Signed-off-by: Rafał Miłecki --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c -@@ -665,9 +665,37 @@ static struct wireless_dev *brcmf_cfg802 +@@ -663,9 +663,37 @@ static struct wireless_dev *brcmf_cfg802 u32 *flags, struct vif_params *params) { diff --git a/package/kernel/mac80211/patches/862-brcmfmac-Disable-power-management.patch b/package/kernel/mac80211/patches/862-brcmfmac-Disable-power-management.patch index 6df1236222..70b8844e63 100644 --- a/package/kernel/mac80211/patches/862-brcmfmac-Disable-power-management.patch +++ b/package/kernel/mac80211/patches/862-brcmfmac-Disable-power-management.patch @@ -14,7 +14,7 @@ Signed-off-by: Phil Elwell --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c -@@ -2784,6 +2784,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip +@@ -2782,6 +2782,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip * preference in cfg struct to apply this to * FW later while initializing the dongle */ -- 2.25.1