From: Hante Meuleman <[email protected]> When a p2p device gets deleted, the memory for the vif is not being released. This is solved by reorganizing the cleanup path and properly freeing the memory.
Reviewed-by: Arend Van Spriel <[email protected]> Reviewed-by: Pieter-Paul Giesberts <[email protected]> Signed-off-by: Hante Meuleman <[email protected]> Signed-off-by: Arend van Spriel <[email protected]> --- drivers/net/wireless/brcm80211/brcmfmac/core.c | 13 ++++++++- drivers/net/wireless/brcm80211/brcmfmac/p2p.c | 38 +++++++++++++------------- drivers/net/wireless/brcm80211/brcmfmac/p2p.h | 1 + 3 files changed, 32 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/core.c b/drivers/net/wireless/brcm80211/brcmfmac/core.c index 031283a..8c2a280 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/core.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c @@ -887,6 +887,16 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) cancel_work_sync(&ifp->multicast_work); } brcmf_net_detach(ifp->ndev); + } else { + /* Only p2p device interfaces which get dynamically created + * end up here. In this case the p2p module should be informed + * about the removal of the interface within the firmware. If + * not then p2p commands towards the firmware will cause some + * serious troublesome side effects. The p2p module will clean + * up the ifp if needed. + */ + brcmf_p2p_ifp_removed(ifp); + kfree(ifp); } } @@ -894,7 +904,8 @@ void brcmf_remove_interface(struct brcmf_if *ifp) { if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bssidx] != ifp)) return; - + brcmf_dbg(TRACE, "Enter, bssidx=%d, ifidx=%d\n", ifp->bssidx, + ifp->ifidx); brcmf_fws_del_interface(ifp); brcmf_del_if(ifp->drvr, ifp->bssidx); } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c index 1e09cd2..83027dc 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -2131,20 +2131,6 @@ fail: } /** - * brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface. - * - * @vif: virtual interface object to delete. - */ -static void brcmf_p2p_delete_p2pdev(struct brcmf_p2p_info *p2p, - struct brcmf_cfg80211_vif *vif) -{ - cfg80211_unregister_wdev(&vif->wdev); - p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; - brcmf_remove_interface(vif->ifp); - brcmf_free_vif(vif); -} - -/** * brcmf_p2p_add_vif() - create a new P2P virtual interface. * * @wiphy: wiphy device of new interface. @@ -2267,9 +2253,11 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) break; case NL80211_IFTYPE_P2P_DEVICE: + if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) + return 0; brcmf_p2p_cancel_remain_on_channel(vif->ifp); brcmf_p2p_deinit_discovery(p2p); - brcmf_p2p_delete_p2pdev(p2p, vif); + brcmf_remove_interface(vif->ifp); return 0; default: return -ENOTSUPP; @@ -2301,6 +2289,21 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) return err; } +void brcmf_p2p_ifp_removed(struct brcmf_if *ifp) +{ + struct brcmf_cfg80211_info *cfg; + struct brcmf_cfg80211_vif *vif; + + brcmf_dbg(INFO, "P2P: device interface removed\n"); + vif = ifp->vif; + cfg = wdev_to_cfg(&vif->wdev); + cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; + rtnl_lock(); + cfg80211_unregister_wdev(&vif->wdev); + rtnl_unlock(); + brcmf_free_vif(vif); +} + int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev) { struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); @@ -2425,10 +2428,7 @@ void brcmf_p2p_detach(struct brcmf_p2p_info *p2p) if (vif != NULL) { brcmf_p2p_cancel_remain_on_channel(vif->ifp); brcmf_p2p_deinit_discovery(p2p); - /* remove discovery interface */ - rtnl_lock(); - brcmf_p2p_delete_p2pdev(p2p, vif); - rtnl_unlock(); + brcmf_remove_interface(vif->ifp); } /* just set it all to zero */ memset(p2p, 0, sizeof(*p2p)); diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.h b/drivers/net/wireless/brcm80211/brcmfmac/p2p.h index d82287d..5d49059 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.h @@ -157,6 +157,7 @@ struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev); int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, enum brcmf_fil_p2p_if_types if_type); +void brcmf_p2p_ifp_removed(struct brcmf_if *ifp); int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev); void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev); int brcmf_p2p_scan_prep(struct wiphy *wiphy, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
