diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd_1363/dhd_cdc.c')
| -rw-r--r-- | drivers/net/wireless/bcmdhd_1363/dhd_cdc.c | 814 |
1 files changed, 814 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd_1363/dhd_cdc.c b/drivers/net/wireless/bcmdhd_1363/dhd_cdc.c new file mode 100644 index 000000000000..7f341b63ffd3 --- /dev/null +++ b/drivers/net/wireless/bcmdhd_1363/dhd_cdc.c @@ -0,0 +1,814 @@ +/* + * DHD Protocol Module for CDC and BDC. + * + * Copyright (C) 1999-2017, Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2 (the "GPL"), + * available at http://www.broadcom.com/licenses/GPLv2.php, with the + * following added to such license: + * + * As a special exception, the copyright holders of this software give you + * permission to link this software with independent modules, and to copy and + * distribute the resulting executable under terms of your choice, provided that + * you also meet, for each linked independent module, the terms and conditions of + * the license of that module. An independent module is a module which is not + * derived from this software. The special exception does not apply to any + * modifications of the software. + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a license + * other than the GPL, without Broadcom's express prior written consent. + * + * + * <<Broadcom-WL-IPTag/Open:>> + * + * $Id: dhd_cdc.c 633939 2016-04-26 06:55:52Z $ + * + * BDC is like CDC, except it includes a header for data packets to convey + * packet priority over the bus, and flags (e.g. to indicate checksum status + * for dongle offload.) + */ + +#include <typedefs.h> +#include <osl.h> + +#include <bcmutils.h> +#include <bcmcdc.h> +#include <bcmendian.h> + +#include <dngl_stats.h> +#include <dhd.h> +#include <dhd_proto.h> +#include <dhd_bus.h> +#include <dhd_dbg.h> + + +#ifdef PROP_TXSTATUS +#include <wlfc_proto.h> +#include <dhd_wlfc.h> +#endif + + +#define RETRIES 2 /* # of retries to retrieve matching ioctl response */ +#define BUS_HEADER_LEN (24+DHD_SDALIGN) /* Must be at least SDPCM_RESERVE + * defined in dhd_sdio.c (amount of header tha might be added) + * plus any space that might be needed for alignment padding. + */ +#define ROUND_UP_MARGIN 2048 /* Biggest SDIO block size possible for + * round off at the end of buffer + */ + +typedef struct dhd_prot { + uint16 reqid; + uint8 pending; + uint32 lastcmd; + uint8 bus_header[BUS_HEADER_LEN]; + cdc_ioctl_t msg; + unsigned char buf[WLC_IOCTL_MAXLEN + ROUND_UP_MARGIN]; +} dhd_prot_t; + + +static int +dhdcdc_msg(dhd_pub_t *dhd) +{ + int err = 0; + dhd_prot_t *prot = dhd->prot; + int len = ltoh32(prot->msg.len) + sizeof(cdc_ioctl_t); + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + + DHD_OS_WAKE_LOCK(dhd); + + /* NOTE : cdc->msg.len holds the desired length of the buffer to be + * returned. Only up to CDC_MAX_MSG_SIZE of this buffer area + * is actually sent to the dongle + */ + if (len > CDC_MAX_MSG_SIZE) + len = CDC_MAX_MSG_SIZE; + + /* Send request */ + err = dhd_bus_txctl(dhd->bus, (uchar*)&prot->msg, len); + + DHD_OS_WAKE_UNLOCK(dhd); + return err; +} + +static int +dhdcdc_cmplt(dhd_pub_t *dhd, uint32 id, uint32 len) +{ + int ret; + int cdc_len = len + sizeof(cdc_ioctl_t); + dhd_prot_t *prot = dhd->prot; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + + do { + ret = dhd_bus_rxctl(dhd->bus, (uchar*)&prot->msg, cdc_len); + if (ret < 0) + break; + } while (CDC_IOC_ID(ltoh32(prot->msg.flags)) != id); + + return ret; +} + +static int +dhdcdc_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len, uint8 action) +{ + dhd_prot_t *prot = dhd->prot; + cdc_ioctl_t *msg = &prot->msg; + int ret = 0, retries = 0; + uint32 id, flags = 0; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + DHD_CTL(("%s: cmd %d len %d\n", __FUNCTION__, cmd, len)); + + + /* Respond "bcmerror" and "bcmerrorstr" with local cache */ + if (cmd == WLC_GET_VAR && buf) + { + if (!strcmp((char *)buf, "bcmerrorstr")) + { + strncpy((char *)buf, bcmerrorstr(dhd->dongle_error), BCME_STRLEN); + goto done; + } + else if (!strcmp((char *)buf, "bcmerror")) + { + *(int *)buf = dhd->dongle_error; + goto done; + } + } + + memset(msg, 0, sizeof(cdc_ioctl_t)); + + msg->cmd = htol32(cmd); + msg->len = htol32(len); + msg->flags = (++prot->reqid << CDCF_IOC_ID_SHIFT); + CDC_SET_IF_IDX(msg, ifidx); + /* add additional action bits */ + action &= WL_IOCTL_ACTION_MASK; + msg->flags |= (action << CDCF_IOC_ACTION_SHIFT); + msg->flags = htol32(msg->flags); + + if (buf) + memcpy(prot->buf, buf, len); + + if ((ret = dhdcdc_msg(dhd)) < 0) { + if (!dhd->hang_was_sent) + DHD_ERROR(("dhdcdc_query_ioctl: dhdcdc_msg failed w/status %d\n", ret)); + goto done; + } + +retry: + /* wait for interrupt and get first fragment */ + if ((ret = dhdcdc_cmplt(dhd, prot->reqid, len)) < 0) + goto done; + + flags = ltoh32(msg->flags); + id = (flags & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT; + + if ((id < prot->reqid) && (++retries < RETRIES)) + goto retry; + if (id != prot->reqid) { + DHD_ERROR(("%s: %s: unexpected request id %d (expected %d)\n", + dhd_ifname(dhd, ifidx), __FUNCTION__, id, prot->reqid)); + ret = -EINVAL; + goto done; + } + + /* Copy info buffer */ + if (buf) + { + if (ret < (int)len) + len = ret; + memcpy(buf, (void*) prot->buf, len); + } + + /* Check the ERROR flag */ + if (flags & CDCF_IOC_ERROR) + { + ret = ltoh32(msg->status); + /* Cache error from dongle */ + dhd->dongle_error = ret; + } + +done: + return ret; +} + + +static int +dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len, uint8 action) +{ + dhd_prot_t *prot = dhd->prot; + cdc_ioctl_t *msg = &prot->msg; + int ret = 0; + uint32 flags, id; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + DHD_CTL(("%s: cmd %d len %d\n", __FUNCTION__, cmd, len)); + + if (dhd->busstate == DHD_BUS_DOWN) { + DHD_ERROR(("%s : bus is down. we have nothing to do\n", __FUNCTION__)); + return -EIO; + } + + /* don't talk to the dongle if fw is about to be reloaded */ + if (dhd->hang_was_sent) { + DHD_ERROR(("%s: HANG was sent up earlier. Not talking to the chip\n", + __FUNCTION__)); + return -EIO; + } + + if (cmd == WLC_SET_PM) { + DHD_TRACE_HW4(("%s: SET PM to %d\n", __FUNCTION__, *(char *)buf)); + } + + memset(msg, 0, sizeof(cdc_ioctl_t)); + + msg->cmd = htol32(cmd); + msg->len = htol32(len); + msg->flags = (++prot->reqid << CDCF_IOC_ID_SHIFT); + CDC_SET_IF_IDX(msg, ifidx); + /* add additional action bits */ + action &= WL_IOCTL_ACTION_MASK; + msg->flags |= (action << CDCF_IOC_ACTION_SHIFT) | CDCF_IOC_SET; + msg->flags = htol32(msg->flags); + + if (buf) + memcpy(prot->buf, buf, len); + + if ((ret = dhdcdc_msg(dhd)) < 0) { + DHD_ERROR(("%s: dhdcdc_msg failed w/status %d\n", __FUNCTION__, ret)); + goto done; + } + + if ((ret = dhdcdc_cmplt(dhd, prot->reqid, len)) < 0) + goto done; + + flags = ltoh32(msg->flags); + id = (flags & CDCF_IOC_ID_MASK) >> CDCF_IOC_ID_SHIFT; + + if (id != prot->reqid) { + DHD_ERROR(("%s: %s: unexpected request id %d (expected %d)\n", + dhd_ifname(dhd, ifidx), __FUNCTION__, id, prot->reqid)); + ret = -EINVAL; + goto done; + } + + /* Check the ERROR flag */ + if (flags & CDCF_IOC_ERROR) + { + ret = ltoh32(msg->status); + /* Cache error from dongle */ + dhd->dongle_error = ret; + } + +done: + return ret; +} + + +int +dhd_prot_ioctl(dhd_pub_t *dhd, int ifidx, wl_ioctl_t * ioc, void * buf, int len) +{ + dhd_prot_t *prot = dhd->prot; + int ret = -1; + uint8 action; + + if ((dhd->busstate == DHD_BUS_DOWN) || dhd->hang_was_sent) { + DHD_ERROR(("%s : bus is down. we have nothing to do\n", __FUNCTION__)); + goto done; + } + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + + ASSERT(len <= WLC_IOCTL_MAXLEN); + + if (len > WLC_IOCTL_MAXLEN) + goto done; + + if (prot->pending == TRUE) { + DHD_ERROR(("CDC packet is pending!!!! cmd=0x%x (%lu) lastcmd=0x%x (%lu)\n", + ioc->cmd, (unsigned long)ioc->cmd, prot->lastcmd, + (unsigned long)prot->lastcmd)); + if ((ioc->cmd == WLC_SET_VAR) || (ioc->cmd == WLC_GET_VAR)) { + DHD_TRACE(("iovar cmd=%s\n", (char*)buf)); + } + goto done; + } + + prot->pending = TRUE; + prot->lastcmd = ioc->cmd; + action = ioc->set; + if (action & WL_IOCTL_ACTION_SET) + ret = dhdcdc_set_ioctl(dhd, ifidx, ioc->cmd, buf, len, action); + else { + ret = dhdcdc_query_ioctl(dhd, ifidx, ioc->cmd, buf, len, action); + if (ret > 0) + ioc->used = ret - sizeof(cdc_ioctl_t); + } + + /* Too many programs assume ioctl() returns 0 on success */ + if (ret >= 0) + ret = 0; + else { + cdc_ioctl_t *msg = &prot->msg; + ioc->needed = ltoh32(msg->len); /* len == needed when set/query fails from dongle */ + } + + /* Intercept the wme_dp ioctl here */ + if ((!ret) && (ioc->cmd == WLC_SET_VAR) && (!strcmp(buf, "wme_dp"))) { + int slen, val = 0; + + slen = strlen("wme_dp") + 1; + if (len >= (int)(slen + sizeof(int))) + bcopy(((char *)buf + slen), &val, sizeof(int)); + dhd->wme_dp = (uint8) ltoh32(val); + } + + prot->pending = FALSE; + +done: + + return ret; +} + +int +dhd_prot_iovar_op(dhd_pub_t *dhdp, const char *name, + void *params, int plen, void *arg, int len, bool set) +{ + return BCME_UNSUPPORTED; +} + +void +dhd_prot_dump(dhd_pub_t *dhdp, struct bcmstrbuf *strbuf) +{ + if (!dhdp || !dhdp->prot) + return; + bcm_bprintf(strbuf, "Protocol CDC: reqid %d\n", dhdp->prot->reqid); +#ifdef PROP_TXSTATUS + dhd_wlfc_dump(dhdp, strbuf); +#endif +} + +/* The FreeBSD PKTPUSH could change the packet buf pinter + so we need to make it changable +*/ +#define PKTBUF pktbuf +void +dhd_prot_hdrpush(dhd_pub_t *dhd, int ifidx, void *PKTBUF) +{ +#ifdef BDC + struct bdc_header *h; +#endif /* BDC */ + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + +#ifdef BDC + /* Push BDC header used to convey priority for buses that don't */ + + PKTPUSH(dhd->osh, PKTBUF, BDC_HEADER_LEN); + + h = (struct bdc_header *)PKTDATA(dhd->osh, PKTBUF); + + h->flags = (BDC_PROTO_VER << BDC_FLAG_VER_SHIFT); + if (PKTSUMNEEDED(PKTBUF)) + h->flags |= BDC_FLAG_SUM_NEEDED; + + + h->priority = (PKTPRIO(PKTBUF) & BDC_PRIORITY_MASK); + h->flags2 = 0; + h->dataOffset = 0; +#endif /* BDC */ + BDC_SET_IF_IDX(h, ifidx); +} +#undef PKTBUF /* Only defined in the above routine */ + +uint +dhd_prot_hdrlen(dhd_pub_t *dhd, void *PKTBUF) +{ + uint hdrlen = 0; +#ifdef BDC + /* Length of BDC(+WLFC) headers pushed */ + hdrlen = BDC_HEADER_LEN + (((struct bdc_header *)PKTBUF)->dataOffset * 4); +#endif + return hdrlen; +} + +int +dhd_prot_hdrpull(dhd_pub_t *dhd, int *ifidx, void *pktbuf, uchar *reorder_buf_info, + uint *reorder_info_len) +{ +#ifdef BDC + struct bdc_header *h; +#endif + uint8 data_offset = 0; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + +#ifdef BDC + if (reorder_info_len) + *reorder_info_len = 0; + /* Pop BDC header used to convey priority for buses that don't */ + + if (PKTLEN(dhd->osh, pktbuf) < BDC_HEADER_LEN) { + DHD_ERROR(("%s: rx data too short (%d < %d)\n", __FUNCTION__, + PKTLEN(dhd->osh, pktbuf), BDC_HEADER_LEN)); + return BCME_ERROR; + } + + h = (struct bdc_header *)PKTDATA(dhd->osh, pktbuf); + + if (!ifidx) { + /* for tx packet, skip the analysis */ + data_offset = h->dataOffset; + PKTPULL(dhd->osh, pktbuf, BDC_HEADER_LEN); + goto exit; + } + + *ifidx = BDC_GET_IF_IDX(h); + + if (((h->flags & BDC_FLAG_VER_MASK) >> BDC_FLAG_VER_SHIFT) != BDC_PROTO_VER) { + DHD_ERROR(("%s: non-BDC packet received, flags = 0x%x\n", + dhd_ifname(dhd, *ifidx), h->flags)); + if (((h->flags & BDC_FLAG_VER_MASK) >> BDC_FLAG_VER_SHIFT) == BDC_PROTO_VER_1) + h->dataOffset = 0; + else + return BCME_ERROR; + } + + if (h->flags & BDC_FLAG_SUM_GOOD) { + DHD_INFO(("%s: BDC packet received with good rx-csum, flags 0x%x\n", + dhd_ifname(dhd, *ifidx), h->flags)); + PKTSETSUMGOOD(pktbuf, TRUE); + } + + PKTSETPRIO(pktbuf, (h->priority & BDC_PRIORITY_MASK)); + data_offset = h->dataOffset; + PKTPULL(dhd->osh, pktbuf, BDC_HEADER_LEN); +#endif /* BDC */ + + +#ifdef PROP_TXSTATUS + if (!DHD_PKTTAG_PKTDIR(PKTTAG(pktbuf))) { + /* + - parse txstatus only for packets that came from the firmware + */ + dhd_wlfc_parse_header_info(dhd, pktbuf, (data_offset << 2), + reorder_buf_info, reorder_info_len); + + } +#endif /* PROP_TXSTATUS */ + +exit: + PKTPULL(dhd->osh, pktbuf, (data_offset << 2)); + return 0; +} + + +int +dhd_prot_attach(dhd_pub_t *dhd) +{ + dhd_prot_t *cdc; + + if (!(cdc = (dhd_prot_t *)DHD_OS_PREALLOC(dhd, DHD_PREALLOC_PROT, sizeof(dhd_prot_t)))) { + DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__)); + goto fail; + } + memset(cdc, 0, sizeof(dhd_prot_t)); + + /* ensure that the msg buf directly follows the cdc msg struct */ + if ((uintptr)(&cdc->msg + 1) != (uintptr)cdc->buf) { + DHD_ERROR(("dhd_prot_t is not correctly defined\n")); + goto fail; + } + + dhd->prot = cdc; +#ifdef BDC + dhd->hdrlen += BDC_HEADER_LEN; +#endif + dhd->maxctl = WLC_IOCTL_MAXLEN + sizeof(cdc_ioctl_t) + ROUND_UP_MARGIN; + return 0; + +fail: + if (cdc != NULL) + DHD_OS_PREFREE(dhd, cdc, sizeof(dhd_prot_t)); + return BCME_NOMEM; +} + +/* ~NOTE~ What if another thread is waiting on the semaphore? Holding it? */ +void +dhd_prot_detach(dhd_pub_t *dhd) +{ +#ifdef PROP_TXSTATUS + dhd_wlfc_deinit(dhd); +#endif + DHD_OS_PREFREE(dhd, dhd->prot, sizeof(dhd_prot_t)); + dhd->prot = NULL; +} + +void +dhd_prot_dstats(dhd_pub_t *dhd) +{ + /* copy bus stats */ + + dhd->dstats.tx_packets = dhd->tx_packets; + dhd->dstats.tx_errors = dhd->tx_errors; + dhd->dstats.rx_packets = dhd->rx_packets; + dhd->dstats.rx_errors = dhd->rx_errors; + dhd->dstats.rx_dropped = dhd->rx_dropped; + dhd->dstats.multicast = dhd->rx_multicast; + return; +} + +int +dhd_sync_with_dongle(dhd_pub_t *dhd) +{ + int ret = 0; + wlc_rev_info_t revinfo; + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + +#ifdef BCMASSERT_LOG + dhd_get_assert_info(dhd); +#endif /* BCMASSERT_LOG */ + + /* Get the device rev info */ + memset(&revinfo, 0, sizeof(revinfo)); + ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_REVINFO, &revinfo, sizeof(revinfo), FALSE, 0); + if (ret < 0) + goto done; + + + dhd_process_cid_mac(dhd, TRUE); + ret = dhd_preinit_ioctls(dhd); + dhd_process_cid_mac(dhd, FALSE); + + /* Always assumes wl for now */ + dhd->iswl = TRUE; + +done: + return ret; +} + +int dhd_prot_init(dhd_pub_t *dhd) +{ + return BCME_OK; +} + +void +dhd_prot_stop(dhd_pub_t *dhd) +{ +/* Nothing to do for CDC */ +} + + +static void +dhd_get_hostreorder_pkts(void *osh, struct reorder_info *ptr, void **pkt, + uint32 *pkt_count, void **pplast, uint8 start, uint8 end) +{ + void *plast = NULL, *p; + uint32 pkt_cnt = 0; + + if (ptr->pend_pkts == 0) { + DHD_REORDER(("%s: no packets in reorder queue \n", __FUNCTION__)); + *pplast = NULL; + *pkt_count = 0; + *pkt = NULL; + return; + } + do { + p = (void *)(ptr->p[start]); + ptr->p[start] = NULL; + + if (p != NULL) { + if (plast == NULL) + *pkt = p; + else + PKTSETNEXT(osh, plast, p); + + plast = p; + pkt_cnt++; + } + start++; + if (start > ptr->max_idx) + start = 0; + } while (start != end); + *pplast = plast; + *pkt_count = pkt_cnt; + ptr->pend_pkts -= (uint8)pkt_cnt; +} + +int +dhd_process_pkt_reorder_info(dhd_pub_t *dhd, uchar *reorder_info_buf, uint reorder_info_len, + void **pkt, uint32 *pkt_count) +{ + uint8 flow_id, max_idx, cur_idx, exp_idx; + struct reorder_info *ptr; + uint8 flags; + void *cur_pkt, *plast = NULL; + uint32 cnt = 0; + + if (pkt == NULL) { + if (pkt_count != NULL) + *pkt_count = 0; + return 0; + } + + flow_id = reorder_info_buf[WLHOST_REORDERDATA_FLOWID_OFFSET]; + flags = reorder_info_buf[WLHOST_REORDERDATA_FLAGS_OFFSET]; + + DHD_REORDER(("flow_id %d, flags 0x%02x, idx(%d, %d, %d)\n", flow_id, flags, + reorder_info_buf[WLHOST_REORDERDATA_CURIDX_OFFSET], + reorder_info_buf[WLHOST_REORDERDATA_EXPIDX_OFFSET], + reorder_info_buf[WLHOST_REORDERDATA_MAXIDX_OFFSET])); + + /* validate flags and flow id */ + if (flags == 0xFF) { + DHD_ERROR(("%s: invalid flags...so ignore this packet\n", __FUNCTION__)); + *pkt_count = 1; + return 0; + } + + cur_pkt = *pkt; + *pkt = NULL; + + ptr = dhd->reorder_bufs[flow_id]; + if (flags & WLHOST_REORDERDATA_DEL_FLOW) { + uint32 buf_size = sizeof(struct reorder_info); + + DHD_REORDER(("%s: Flags indicating to delete a flow id %d\n", + __FUNCTION__, flow_id)); + + if (ptr == NULL) { + DHD_REORDER(("%s: received flags to cleanup, but no flow (%d) yet\n", + __FUNCTION__, flow_id)); + *pkt_count = 1; + *pkt = cur_pkt; + return 0; + } + + dhd_get_hostreorder_pkts(dhd->osh, ptr, pkt, &cnt, &plast, + ptr->exp_idx, ptr->exp_idx); + /* set it to the last packet */ + if (plast) { + PKTSETNEXT(dhd->osh, plast, cur_pkt); + cnt++; + } + else { + if (cnt != 0) { + DHD_ERROR(("%s: del flow: something fishy, pending packets %d\n", + __FUNCTION__, cnt)); + } + *pkt = cur_pkt; + cnt = 1; + } + buf_size += ((ptr->max_idx + 1) * sizeof(void *)); + MFREE(dhd->osh, ptr, buf_size); + dhd->reorder_bufs[flow_id] = NULL; + *pkt_count = cnt; + return 0; + } + /* all the other cases depend on the existance of the reorder struct for that flow id */ + if (ptr == NULL) { + uint32 buf_size_alloc = sizeof(reorder_info_t); + max_idx = reorder_info_buf[WLHOST_REORDERDATA_MAXIDX_OFFSET]; + + buf_size_alloc += ((max_idx + 1) * sizeof(void*)); + /* allocate space to hold the buffers, index etc */ + + DHD_REORDER(("%s: alloc buffer of size %d size, reorder info id %d, maxidx %d\n", + __FUNCTION__, buf_size_alloc, flow_id, max_idx)); + ptr = (struct reorder_info *)MALLOC(dhd->osh, buf_size_alloc); + if (ptr == NULL) { + DHD_ERROR(("%s: Malloc failed to alloc buffer\n", __FUNCTION__)); + *pkt_count = 1; + return 0; + } + bzero(ptr, buf_size_alloc); + dhd->reorder_bufs[flow_id] = ptr; + ptr->p = (void *)(ptr+1); + ptr->max_idx = max_idx; + } + if (flags & WLHOST_REORDERDATA_NEW_HOLE) { + DHD_REORDER(("%s: new hole, so cleanup pending buffers\n", __FUNCTION__)); + if (ptr->pend_pkts) { + dhd_get_hostreorder_pkts(dhd->osh, ptr, pkt, &cnt, &plast, + ptr->exp_idx, ptr->exp_idx); + ptr->pend_pkts = 0; + } + ptr->cur_idx = reorder_info_buf[WLHOST_REORDERDATA_CURIDX_OFFSET]; + ptr->exp_idx = reorder_info_buf[WLHOST_REORDERDATA_EXPIDX_OFFSET]; + ptr->max_idx = reorder_info_buf[WLHOST_REORDERDATA_MAXIDX_OFFSET]; + ptr->p[ptr->cur_idx] = cur_pkt; + ptr->pend_pkts++; + *pkt_count = cnt; + } + else if (flags & WLHOST_REORDERDATA_CURIDX_VALID) { + cur_idx = reorder_info_buf[WLHOST_REORDERDATA_CURIDX_OFFSET]; + exp_idx = reorder_info_buf[WLHOST_REORDERDATA_EXPIDX_OFFSET]; + + + if ((exp_idx == ptr->exp_idx) && (cur_idx != ptr->exp_idx)) { + /* still in the current hole */ + /* enqueue the current on the buffer chain */ + if (ptr->p[cur_idx] != NULL) { + DHD_REORDER(("%s: HOLE: ERROR buffer pending..free it\n", + __FUNCTION__)); + PKTFREE(dhd->osh, ptr->p[cur_idx], TRUE); + ptr->p[cur_idx] = NULL; + } + ptr->p[cur_idx] = cur_pkt; + ptr->pend_pkts++; + ptr->cur_idx = cur_idx; + DHD_REORDER(("%s: fill up a hole..pending packets is %d\n", + __FUNCTION__, ptr->pend_pkts)); + *pkt_count = 0; + *pkt = NULL; + } + else if (ptr->exp_idx == cur_idx) { + /* got the right one ..flush from cur to exp and update exp */ + DHD_REORDER(("%s: got the right one now, cur_idx is %d\n", + __FUNCTION__, cur_idx)); + if (ptr->p[cur_idx] != NULL) { + DHD_REORDER(("%s: Error buffer pending..free it\n", + __FUNCTION__)); + PKTFREE(dhd->osh, ptr->p[cur_idx], TRUE); + ptr->p[cur_idx] = NULL; + } + ptr->p[cur_idx] = cur_pkt; + ptr->pend_pkts++; + + ptr->cur_idx = cur_idx; + ptr->exp_idx = exp_idx; + + dhd_get_hostreorder_pkts(dhd->osh, ptr, pkt, &cnt, &plast, + cur_idx, exp_idx); + *pkt_count = cnt; + DHD_REORDER(("%s: freeing up buffers %d, still pending %d\n", + __FUNCTION__, cnt, ptr->pend_pkts)); + } + else { + uint8 end_idx; + bool flush_current = FALSE; + /* both cur and exp are moved now .. */ + DHD_REORDER(("%s:, flow %d, both moved, cur %d(%d), exp %d(%d)\n", + __FUNCTION__, flow_id, ptr->cur_idx, cur_idx, + ptr->exp_idx, exp_idx)); + if (flags & WLHOST_REORDERDATA_FLUSH_ALL) + end_idx = ptr->exp_idx; + else + end_idx = exp_idx; + + /* flush pkts first */ + dhd_get_hostreorder_pkts(dhd->osh, ptr, pkt, &cnt, &plast, + ptr->exp_idx, end_idx); + + if (cur_idx == ptr->max_idx) { + if (exp_idx == 0) + flush_current = TRUE; + } else { + if (exp_idx == cur_idx + 1) + flush_current = TRUE; + } + if (flush_current) { + if (plast) + PKTSETNEXT(dhd->osh, plast, cur_pkt); + else + *pkt = cur_pkt; + cnt++; + } + else { + ptr->p[cur_idx] = cur_pkt; + ptr->pend_pkts++; + } + ptr->exp_idx = exp_idx; + ptr->cur_idx = cur_idx; + *pkt_count = cnt; + } + } + else { + uint8 end_idx; + /* no real packet but update to exp_seq...that means explicit window move */ + exp_idx = reorder_info_buf[WLHOST_REORDERDATA_EXPIDX_OFFSET]; + + DHD_REORDER(("%s: move the window, cur_idx is %d, exp is %d, new exp is %d\n", + __FUNCTION__, ptr->cur_idx, ptr->exp_idx, exp_idx)); + if (flags & WLHOST_REORDERDATA_FLUSH_ALL) + end_idx = ptr->exp_idx; + else + end_idx = exp_idx; + + dhd_get_hostreorder_pkts(dhd->osh, ptr, pkt, &cnt, &plast, ptr->exp_idx, end_idx); + if (plast) + PKTSETNEXT(dhd->osh, plast, cur_pkt); + else + *pkt = cur_pkt; + cnt++; + *pkt_count = cnt; + /* set the new expected idx */ + ptr->exp_idx = exp_idx; + } + return 0; +} |