From: Rafał Miłecki Date: Fri, 17 Jun 2016 06:23:11 +0000 (+0000) Subject: mac80211: brcmfmac: fix support for up to 4 AP interfaces X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6a1d660a84bddefbdd1811fba57b37488ff86fd2;p=openwrt%2Fsvn-archive%2Fopenwrt.git mac80211: brcmfmac: fix support for up to 4 AP interfaces Signed-off-by: Rafał Miłecki SVN-Revision: 49381 --- diff --git a/package/kernel/mac80211/patches/351-0005-brcmfmac-rework-function-picking-free-BSS-index.patch b/package/kernel/mac80211/patches/351-0005-brcmfmac-rework-function-picking-free-BSS-index.patch new file mode 100644 index 0000000000..c602f2272a --- /dev/null +++ b/package/kernel/mac80211/patches/351-0005-brcmfmac-rework-function-picking-free-BSS-index.patch @@ -0,0 +1,119 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Thu, 26 May 2016 01:44:27 +0200 +Subject: [PATCH] brcmfmac: rework function picking free BSS index +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The old implementation was overcomplicated and slightly bugged in some +corner cases. + +Consider following state of BSS-es (limited to 6 for simplification): +drvr->iflist[0]: { bsscfgidx:0, ndev->name:wlan1, } +drvr->iflist[1]: (null) +drvr->iflist[2]: { bsscfgidx:2, ndev->name:wlan1-1, } +drvr->iflist[3]: { bsscfgidx:3, ndev->name:wlan1-2, } +drvr->iflist[4]: (null) +drvr->iflist[5]: (null) +In such case the next AP interface should bsscfgidx 4 (we don't use 1 as +it's reserved for P2P). + +With old code the loop iterations were following: +[ifidx = 0] [bsscfgidx = 2] [highest = 2] +[ifidx = 1] [bsscfgidx = 2] [highest = 2] available = true +[ifidx = 2] [bsscfgidx = 2] [highest = 2] bsscfgidx = highest + 1 +[ifidx = 3] [bsscfgidx = 3] [highest = 2] bsscfgidx = highest + 1 +[ifidx = 4] [bsscfgidx = 3] [highest = 2] available = true +[ifidx = 5] [bsscfgidx = 3] [highest = 2] available = true +There were 2 obvious problems: +1) Having empty BSS at index 1 was resulting in available being always + set to true, even if we would run out of BSS-es. +2) Calculated bsscfgidx was invalid (3 instead of 4) resulting in driver + not being able to create the 4th AP interface. + +New code is simpler, placed in file where it's really used, handles +running out of free BSS-es and allows using 4 interfaces at the same +time. It also looks for the first free BSS instead of one after the last +in use. It works well with current driver (which doesn't allow deleting +interfaces) and should be future proof (if we ever allow deleting). + +Signed-off-by: Rafał Miłecki +Signed-off-by: Kalle Valo +--- + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +@@ -527,6 +527,21 @@ brcmf_cfg80211_update_proto_addr_mode(st + ADDR_INDIRECT); + } + ++static int brcmf_get_first_free_bsscfgidx(struct brcmf_pub *drvr) ++{ ++ int bsscfgidx; ++ ++ for (bsscfgidx = 0; bsscfgidx < BRCMF_MAX_IFS; bsscfgidx++) { ++ /* bsscfgidx 1 is reserved for legacy P2P */ ++ if (bsscfgidx == 1) ++ continue; ++ if (!drvr->iflist[bsscfgidx]) ++ return bsscfgidx; ++ } ++ ++ return -ENOMEM; ++} ++ + static int brcmf_cfg80211_request_ap_if(struct brcmf_if *ifp) + { + struct brcmf_mbss_ssid_le mbss_ssid_le; +@@ -534,7 +549,7 @@ static int brcmf_cfg80211_request_ap_if( + int err; + + memset(&mbss_ssid_le, 0, sizeof(mbss_ssid_le)); +- bsscfgidx = brcmf_get_next_free_bsscfgidx(ifp->drvr); ++ bsscfgidx = brcmf_get_first_free_bsscfgidx(ifp->drvr); + if (bsscfgidx < 0) + return bsscfgidx; + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +@@ -753,30 +753,6 @@ void brcmf_remove_interface(struct brcmf + brcmf_del_if(ifp->drvr, ifp->bsscfgidx); + } + +-int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr) +-{ +- int ifidx; +- int bsscfgidx; +- bool available; +- int highest; +- +- available = false; +- bsscfgidx = 2; +- highest = 2; +- for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { +- if (drvr->iflist[ifidx]) { +- if (drvr->iflist[ifidx]->bsscfgidx == bsscfgidx) +- bsscfgidx = highest + 1; +- else if (drvr->iflist[ifidx]->bsscfgidx > highest) +- highest = drvr->iflist[ifidx]->bsscfgidx; +- } else { +- available = true; +- } +- } +- +- return available ? bsscfgidx : -ENOMEM; +-} +- + #ifdef CONFIG_INET + #define ARPOL_MAX_ENTRIES 8 + static int brcmf_inetaddr_changed(struct notifier_block *nb, +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h +@@ -217,7 +217,6 @@ int brcmf_net_attach(struct brcmf_if *if + struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, + bool is_p2pdev, char *name, u8 *mac_addr); + void brcmf_remove_interface(struct brcmf_if *ifp); +-int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr); + void brcmf_txflowblock_if(struct brcmf_if *ifp, + enum brcmf_netif_stop_reason reason, bool state); + void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success); diff --git a/package/kernel/mac80211/patches/861-brcmfmac-register-wiphy-s-during-module_init.patch b/package/kernel/mac80211/patches/861-brcmfmac-register-wiphy-s-during-module_init.patch index 8cf9ea28f5..0bfaae6a1b 100644 --- a/package/kernel/mac80211/patches/861-brcmfmac-register-wiphy-s-during-module_init.patch +++ b/package/kernel/mac80211/patches/861-brcmfmac-register-wiphy-s-during-module_init.patch @@ -13,7 +13,7 @@ Signed-off-by: Rafał Miłecki --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c -@@ -1232,6 +1232,7 @@ int __init brcmf_core_init(void) +@@ -1208,6 +1208,7 @@ int __init brcmf_core_init(void) { if (!schedule_work(&brcmf_driver_work)) return -EBUSY; diff --git a/package/kernel/mac80211/patches/862-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch b/package/kernel/mac80211/patches/862-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch index ac0f704538..c5445cf81d 100644 --- a/package/kernel/mac80211/patches/862-brcmfmac-workaround-bug-with-some-inconsistent-BSSes.patch +++ b/package/kernel/mac80211/patches/862-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 -@@ -636,9 +636,37 @@ static struct wireless_dev *brcmf_cfg802 +@@ -651,9 +651,37 @@ static struct wireless_dev *brcmf_cfg802 u32 *flags, struct vif_params *params) { diff --git a/package/kernel/mac80211/patches/863-brcmfmac-Disable-power-management.patch b/package/kernel/mac80211/patches/863-brcmfmac-Disable-power-management.patch index a24601fba1..53840fe3f3 100644 --- a/package/kernel/mac80211/patches/863-brcmfmac-Disable-power-management.patch +++ b/package/kernel/mac80211/patches/863-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 -@@ -2667,6 +2667,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip +@@ -2682,6 +2682,10 @@ brcmf_cfg80211_set_power_mgmt(struct wip * preference in cfg struct to apply this to * FW later while initializing the dongle */