Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Arend Van Spriel | 1805 | 85.63% | 24 | 37.50% |
Hante Meuleman | 161 | 7.64% | 21 | 32.81% |
Rafał Miłecki | 57 | 2.70% | 3 | 4.69% |
Franky Lin | 20 | 0.95% | 6 | 9.38% |
Gustavo A. R. Silva | 17 | 0.81% | 3 | 4.69% |
Dokyung Song | 14 | 0.66% | 1 | 1.56% |
Kevin Cernekee | 10 | 0.47% | 1 | 1.56% |
Wright Feng | 10 | 0.47% | 1 | 1.56% |
John W. Linville | 6 | 0.28% | 1 | 1.56% |
Lee Jones | 4 | 0.19% | 2 | 3.12% |
Sebastian Andrzej Siewior | 4 | 0.19% | 1 | 1.56% |
Total | 2108 | 64 |
// SPDX-License-Identifier: ISC /* * Copyright (c) 2012 Broadcom Corporation */ #include <linux/netdevice.h> #include "brcmu_wifi.h" #include "brcmu_utils.h" #include "cfg80211.h" #include "core.h" #include "debug.h" #include "tracepoint.h" #include "fweh.h" #include "fwil.h" #include "proto.h" #include "bus.h" #include "fwvid.h" /** * struct brcmf_fweh_queue_item - event item on event queue. * * @q: list element for queuing. * @code: event code. * @ifidx: interface index related to this event. * @ifaddr: ethernet address for interface. * @emsg: common parameters of the firmware event message. * @datalen: length of the data array * @data: event specific data part of the firmware event. */ struct brcmf_fweh_queue_item { struct list_head q; u32 code; u8 ifidx; u8 ifaddr[ETH_ALEN]; struct brcmf_event_msg_be emsg; u32 datalen; u8 data[] __counted_by(datalen); }; /* * struct brcmf_fweh_event_name - code, name mapping entry. */ struct brcmf_fweh_event_name { enum brcmf_fweh_event_code code; const char *name; }; #ifdef DEBUG #define BRCMF_ENUM_DEF(id, val) \ { val, #id }, /* array for mapping code to event name */ static struct brcmf_fweh_event_name fweh_event_names[] = { BRCMF_FWEH_EVENT_ENUM_DEFLIST }; #undef BRCMF_ENUM_DEF /** * brcmf_fweh_event_name() - returns name for given event code. * * @code: code to lookup. */ const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) { int i; for (i = 0; i < ARRAY_SIZE(fweh_event_names); i++) { if (fweh_event_names[i].code == code) return fweh_event_names[i].name; } return "unknown"; } #else const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) { return "nodebug"; } #endif /** * brcmf_fweh_queue_event() - create and queue event. * * @fweh: firmware event handling info. * @event: event queue entry. */ static void brcmf_fweh_queue_event(struct brcmf_fweh_info *fweh, struct brcmf_fweh_queue_item *event) { ulong flags; spin_lock_irqsave(&fweh->evt_q_lock, flags); list_add_tail(&event->q, &fweh->event_q); spin_unlock_irqrestore(&fweh->evt_q_lock, flags); schedule_work(&fweh->event_work); } static int brcmf_fweh_call_event_handler(struct brcmf_pub *drvr, struct brcmf_if *ifp, u32 fwcode, struct brcmf_event_msg *emsg, void *data) { struct brcmf_fweh_info *fweh; int err = -EINVAL; if (ifp) { fweh = ifp->drvr->fweh; /* handle the event if valid interface and handler */ if (fweh->evt_handler[fwcode]) err = fweh->evt_handler[fwcode](ifp, emsg, data); else bphy_err(drvr, "unhandled fwevt %d ignored\n", fwcode); } else { bphy_err(drvr, "no interface object\n"); } return err; } /** * brcmf_fweh_handle_if_event() - handle IF event. * * @drvr: driver information object. * @emsg: event message object. * @data: event object. */ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, struct brcmf_event_msg *emsg, void *data) { struct brcmf_if_event *ifevent = data; struct brcmf_if *ifp; bool is_p2pdev; brcmf_dbg(EVENT, "action: %u ifidx: %u bsscfgidx: %u flags: %u role: %u\n", ifevent->action, ifevent->ifidx, ifevent->bsscfgidx, ifevent->flags, ifevent->role); /* The P2P Device interface event must not be ignored contrary to what * firmware tells us. Older firmware uses p2p noif, with sta role. * This should be accepted when p2pdev_setup is ongoing. TDLS setup will * use the same ifevent and should be ignored. */ is_p2pdev = ((ifevent->flags & BRCMF_E_IF_FLAG_NOIF) && (ifevent->role == BRCMF_E_IF_ROLE_P2P_CLIENT || ((ifevent->role == BRCMF_E_IF_ROLE_STA) && (drvr->fweh->p2pdev_setup_ongoing)))); if (!is_p2pdev && (ifevent->flags & BRCMF_E_IF_FLAG_NOIF)) { brcmf_dbg(EVENT, "event can be ignored\n"); return; } if (ifevent->ifidx >= BRCMF_MAX_IFS) { bphy_err(drvr, "invalid interface index: %u\n", ifevent->ifidx); return; } ifp = drvr->iflist[ifevent->bsscfgidx]; if (ifevent->action == BRCMF_E_IF_ADD) { brcmf_dbg(EVENT, "adding %s (%pM)\n", emsg->ifname, emsg->addr); ifp = brcmf_add_if(drvr, ifevent->bsscfgidx, ifevent->ifidx, is_p2pdev, emsg->ifname, emsg->addr); if (IS_ERR(ifp)) return; if (!is_p2pdev) brcmf_proto_add_if(drvr, ifp); if (!drvr->fweh->evt_handler[BRCMF_E_IF]) if (brcmf_net_attach(ifp, false) < 0) return; } if (ifp && ifevent->action == BRCMF_E_IF_CHANGE) brcmf_proto_reset_if(drvr, ifp); brcmf_fweh_call_event_handler(drvr, ifp, emsg->event_code, emsg, data); if (ifp && ifevent->action == BRCMF_E_IF_DEL) { bool armed = brcmf_cfg80211_vif_event_armed(drvr->config); /* Default handling in case no-one waits for this event */ if (!armed) brcmf_remove_interface(ifp, false); } } static void brcmf_fweh_map_event_code(struct brcmf_fweh_info *fweh, enum brcmf_fweh_event_code code, u32 *fw_code) { int i; if (WARN_ON(!fw_code)) return; *fw_code = code; if (fweh->event_map) { for (i = 0; i < fweh->event_map->n_items; i++) { if (fweh->event_map->items[i].code == code) { *fw_code = fweh->event_map->items[i].fwevt_code; break; } } } } static void brcmf_fweh_map_fwevt_code(struct brcmf_fweh_info *fweh, u32 fw_code, enum brcmf_fweh_event_code *code) { int i; if (WARN_ON(!code)) return; *code = fw_code; if (fweh->event_map) { for (i = 0; i < fweh->event_map->n_items; i++) { if (fweh->event_map->items[i].fwevt_code == fw_code) { *code = fweh->event_map->items[i].code; break; } } } } /** * brcmf_fweh_dequeue_event() - get event from the queue. * * @fweh: firmware event handling info. */ static struct brcmf_fweh_queue_item * brcmf_fweh_dequeue_event(struct brcmf_fweh_info *fweh) { struct brcmf_fweh_queue_item *event = NULL; ulong flags; spin_lock_irqsave(&fweh->evt_q_lock, flags); if (!list_empty(&fweh->event_q)) { event = list_first_entry(&fweh->event_q, struct brcmf_fweh_queue_item, q); list_del(&event->q); } spin_unlock_irqrestore(&fweh->evt_q_lock, flags); return event; } /** * brcmf_fweh_event_worker() - firmware event worker. * * @work: worker object. */ static void brcmf_fweh_event_worker(struct work_struct *work) { struct brcmf_pub *drvr; struct brcmf_if *ifp; struct brcmf_fweh_info *fweh; struct brcmf_fweh_queue_item *event; int err = 0; struct brcmf_event_msg_be *emsg_be; struct brcmf_event_msg emsg; fweh = container_of(work, struct brcmf_fweh_info, event_work); drvr = fweh->drvr; while ((event = brcmf_fweh_dequeue_event(fweh))) { enum brcmf_fweh_event_code code; brcmf_fweh_map_fwevt_code(fweh, event->code, &code); brcmf_dbg(EVENT, "event %s (%u:%u) ifidx %u bsscfg %u addr %pM\n", brcmf_fweh_event_name(code), code, event->code, event->emsg.ifidx, event->emsg.bsscfgidx, event->emsg.addr); if (event->emsg.bsscfgidx >= BRCMF_MAX_IFS) { bphy_err(drvr, "invalid bsscfg index: %u\n", event->emsg.bsscfgidx); goto event_free; } /* convert event message */ emsg_be = &event->emsg; emsg.version = be16_to_cpu(emsg_be->version); emsg.flags = be16_to_cpu(emsg_be->flags); emsg.event_code = code; emsg.status = be32_to_cpu(emsg_be->status); emsg.reason = be32_to_cpu(emsg_be->reason); emsg.auth_type = be32_to_cpu(emsg_be->auth_type); emsg.datalen = be32_to_cpu(emsg_be->datalen); memcpy(emsg.addr, emsg_be->addr, ETH_ALEN); memcpy(emsg.ifname, emsg_be->ifname, sizeof(emsg.ifname)); emsg.ifidx = emsg_be->ifidx; emsg.bsscfgidx = emsg_be->bsscfgidx; brcmf_dbg(EVENT, " version %u flags %u status %u reason %u\n", emsg.version, emsg.flags, emsg.status, emsg.reason); brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data, min_t(u32, emsg.datalen, 64), "event payload, len=%d\n", emsg.datalen); /* special handling of interface event */ if (event->code == BRCMF_E_IF) { brcmf_fweh_handle_if_event(drvr, &emsg, event->data); goto event_free; } if (event->code == BRCMF_E_TDLS_PEER_EVENT) ifp = drvr->iflist[0]; else ifp = drvr->iflist[emsg.bsscfgidx]; err = brcmf_fweh_call_event_handler(drvr, ifp, event->code, &emsg, event->data); if (err) { bphy_err(drvr, "event handler failed (%d)\n", event->code); err = 0; } event_free: kfree(event); } } /** * brcmf_fweh_p2pdev_setup() - P2P device setup ongoing (or not). * * @ifp: ifp on which setup is taking place or finished. * @ongoing: p2p device setup in progress (or not). */ void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing) { ifp->drvr->fweh->p2pdev_setup_ongoing = ongoing; } /** * brcmf_fweh_attach() - initialize firmware event handling. * * @drvr: driver information object. */ int brcmf_fweh_attach(struct brcmf_pub *drvr) { struct brcmf_fweh_info *fweh; int err; err = brcmf_fwvid_alloc_fweh_info(drvr); if (err < 0) return err; fweh = drvr->fweh; fweh->drvr = drvr; fweh->event_mask_len = DIV_ROUND_UP(fweh->num_event_codes, 8); fweh->event_mask = kzalloc(fweh->event_mask_len, GFP_KERNEL); if (!fweh->event_mask) return -ENOMEM; INIT_WORK(&fweh->event_work, brcmf_fweh_event_worker); spin_lock_init(&fweh->evt_q_lock); INIT_LIST_HEAD(&fweh->event_q); return 0; } /** * brcmf_fweh_detach() - cleanup firmware event handling. * * @drvr: driver information object. */ void brcmf_fweh_detach(struct brcmf_pub *drvr) { struct brcmf_fweh_info *fweh = drvr->fweh; if (!fweh) return; /* cancel the worker if initialized */ if (fweh->event_work.func) { cancel_work_sync(&fweh->event_work); WARN_ON(!list_empty(&fweh->event_q)); } drvr->fweh = NULL; kfree(fweh->event_mask); kfree(fweh); } /** * brcmf_fweh_register() - register handler for given event code. * * @drvr: driver information object. * @code: event code. * @handler: handler for the given event code. */ int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, brcmf_fweh_handler_t handler) { struct brcmf_fweh_info *fweh = drvr->fweh; u32 evt_handler_idx; brcmf_fweh_map_event_code(fweh, code, &evt_handler_idx); if (fweh->evt_handler[evt_handler_idx]) { bphy_err(drvr, "event code %d already registered\n", code); return -ENOSPC; } fweh->evt_handler[evt_handler_idx] = handler; brcmf_dbg(TRACE, "event handler registered for %s\n", brcmf_fweh_event_name(code)); return 0; } /** * brcmf_fweh_unregister() - remove handler for given code. * * @drvr: driver information object. * @code: event code. */ void brcmf_fweh_unregister(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code) { u32 evt_handler_idx; brcmf_dbg(TRACE, "event handler cleared for %s\n", brcmf_fweh_event_name(code)); brcmf_fweh_map_event_code(drvr->fweh, code, &evt_handler_idx); drvr->fweh->evt_handler[evt_handler_idx] = NULL; } /** * brcmf_fweh_activate_events() - enables firmware events registered. * * @ifp: primary interface object. */ int brcmf_fweh_activate_events(struct brcmf_if *ifp) { struct brcmf_fweh_info *fweh = ifp->drvr->fweh; enum brcmf_fweh_event_code code; int i, err; memset(fweh->event_mask, 0, fweh->event_mask_len); for (i = 0; i < fweh->num_event_codes; i++) { if (fweh->evt_handler[i]) { brcmf_fweh_map_fwevt_code(fweh, i, &code); brcmf_dbg(EVENT, "enable event %s\n", brcmf_fweh_event_name(code)); setbit(fweh->event_mask, i); } } /* want to handle IF event as well */ brcmf_dbg(EVENT, "enable event IF\n"); setbit(fweh->event_mask, BRCMF_E_IF); err = brcmf_fil_iovar_data_set(ifp, "event_msgs", fweh->event_mask, fweh->event_mask_len); if (err) bphy_err(fweh->drvr, "Set event_msgs error (%d)\n", err); return err; } /** * brcmf_fweh_process_event() - process skb as firmware event. * * @drvr: driver information object. * @event_packet: event packet to process. * @packet_len: length of the packet * @gfp: memory allocation flags. * * If the packet buffer contains a firmware event message it will * dispatch the event to a registered handler (using worker). */ void brcmf_fweh_process_event(struct brcmf_pub *drvr, struct brcmf_event *event_packet, u32 packet_len, gfp_t gfp) { u32 fwevt_idx; struct brcmf_fweh_info *fweh = drvr->fweh; struct brcmf_fweh_queue_item *event; void *data; u32 datalen; /* get event info */ fwevt_idx = get_unaligned_be32(&event_packet->msg.event_type); datalen = get_unaligned_be32(&event_packet->msg.datalen); data = &event_packet[1]; if (fwevt_idx >= fweh->num_event_codes) return; if (fwevt_idx != BRCMF_E_IF && !fweh->evt_handler[fwevt_idx]) return; if (datalen > BRCMF_DCMD_MAXLEN || datalen + sizeof(*event_packet) > packet_len) return; event = kzalloc(struct_size(event, data, datalen), gfp); if (!event) return; event->code = fwevt_idx; event->datalen = datalen; event->ifidx = event_packet->msg.ifidx; /* use memcpy to get aligned event message */ memcpy(&event->emsg, &event_packet->msg, sizeof(event->emsg)); memcpy(event->data, data, datalen); memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN); brcmf_fweh_queue_event(fweh, event); }
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