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brcmfmac: enable tx status signalling

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Enabling the tx status signalling, which requires packet tagging
before sending to the firmware and handling the tx status signal.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2013-04-03 12:40:40 +02:00 committed by John W. Linville
parent c7f34a69a2
commit 3edc1cff02
5 changed files with 455 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c
View File

@ -138,16 +138,34 @@ ssize_t brcmf_debugfs_fws_stats_read(struct file *f, char __user *data,
return 0;
res = scnprintf(buf, sizeof(buf),
"header_pulls: %u\n"
"header_only_pkt: %u\n"
"tlv_parse_failed: %u\n"
"tlv_invalid_type: %u\n"
"mac_update_fails: %u\n",
"header_pulls: %u\n"
"header_only_pkt: %u\n"
"tlv_parse_failed: %u\n"
"tlv_invalid_type: %u\n"
"mac_update_fails: %u\n"
"pkt2bus: %u\n"
"generic_error: %u\n"
"txs_indicate: %u\n"
"txs_discard: %u\n"
"txs_suppr_core: %u\n"
"txs_suppr_ps: %u\n"
"txs_tossed: %u\n"
"send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n",
fwstats->header_pulls,
fwstats->header_only_pkt,
fwstats->tlv_parse_failed,
fwstats->tlv_invalid_type,
fwstats->mac_update_failed);
fwstats->mac_update_failed,
fwstats->pkt2bus,
fwstats->generic_error,
fwstats->txs_indicate,
fwstats->txs_discard,
fwstats->txs_supp_core,
fwstats->txs_supp_ps,
fwstats->txs_tossed,
fwstats->send_pkts[0], fwstats->send_pkts[1],
fwstats->send_pkts[2], fwstats->send_pkts[3],
fwstats->send_pkts[4]);
return simple_read_from_buffer(data, count, ppos, buf, res);
}

8
drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h
View File

@ -137,7 +137,15 @@ struct brcmf_fws_stats {
u32 tlv_invalid_type;
u32 header_only_pkt;
u32 header_pulls;
u32 pkt2bus;
u32 send_pkts[5];
u32 generic_error;
u32 mac_update_failed;
u32 txs_indicate;
u32 txs_discard;
u32 txs_supp_core;
u32 txs_supp_ps;
u32 txs_tossed;
};
struct brcmf_pub;

18
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
View File

@ -223,18 +223,7 @@ static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
goto done;
}
/* handle ethernet header */
eh = (struct ethhdr *)(skb->data);
if (is_multicast_ether_addr(eh->h_dest))
drvr->tx_multicast++;
if (ntohs(eh->h_proto) == ETH_P_PAE)
atomic_inc(&ifp->pend_8021x_cnt);
/* If the protocol uses a data header, apply it */
brcmf_proto_hdrpush(drvr, ifp->ifidx, 0, skb);
/* Use bus module to send data frame */
ret = brcmf_bus_txdata(drvr->bus_if, skb);
ret = brcmf_fws_process_skb(ifp, skb);
done:
if (ret) {
@ -376,7 +365,7 @@ void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
ifp = drvr->iflist[ifidx];
if (!ifp)
return;
goto done;
if (res == 0) {
eh = (struct ethhdr *)(txp->data);
@ -390,6 +379,8 @@ void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
}
if (!success)
ifp->stats.tx_errors++;
done:
brcmu_pkt_buf_free_skb(txp);
}
void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
@ -402,7 +393,6 @@ void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
return;
brcmf_txfinalize(drvr, txp, success);
brcmu_pkt_buf_free_skb(txp);
}
static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)

485
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
View File

@ -19,12 +19,15 @@
#include <linux/spinlock.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/err.h>
#include <uapi/linux/nl80211.h>
#include <net/cfg80211.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "dhd_proto.h"
#include "dhd_dbg.h"
#include "dhd_bus.h"
#include "fwil.h"
@ -64,7 +67,7 @@
BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
/**
/*
* enum brcmf_fws_tlv_type - definition of tlv identifiers.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
@ -75,8 +78,18 @@ enum brcmf_fws_tlv_type {
};
#undef BRCMF_FWS_TLV_DEF
/*
* enum brcmf_fws_tlv_len - definition of tlv lengths.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
enum brcmf_fws_tlv_len {
BRCMF_FWS_TLV_DEFLIST
};
#undef BRCMF_FWS_TLV_DEF
#ifdef DEBUG
/**
/*
* brcmf_fws_tlv_names - array of tlv names.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
@ -106,7 +119,7 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
}
#endif /* DEBUG */
/**
/*
* flags used to enable tlv signalling from firmware.
*/
#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
@ -117,11 +130,6 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
#define BRCMF_FWS_HANGER_MAXITEMS 1024
#define BRCMF_FWS_HANGER_ITEM_STATE_FREE 1
#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE 2
#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED 3
#define BRCMF_FWS_STATE_OPEN 1
#define BRCMF_FWS_STATE_CLOSE 2
@ -135,23 +143,27 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
#define BRCMF_FWS_PSQ_PREC_COUNT ((NL80211_NUM_ACS + 1) * 2)
#define BRCMF_FWS_PSQ_LEN 256
#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
/**
* enum brcmf_fws_skb_state - indicates processing state of skb.
*
* @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
* @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
* @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
*/
enum brcmf_fws_skb_state {
WLFC_PKTTYPE_NEW,
WLFC_PKTTYPE_DELAYED,
WLFC_PKTTYPE_SUPPRESSED,
WLFC_PKTTYPE_MAX
BRCMF_FWS_SKBSTATE_NEW,
BRCMF_FWS_SKBSTATE_DELAYED,
BRCMF_FWS_SKBSTATE_SUPPRESSED
};
/**
* struct brcmf_skbuff_cb - control buffer associated with skbuff.
*
* @if_flags: holds interface index and packet related flags.
* @da: destination MAC address extracted from skbuff once.
* @htod: host to device packet identifier (used in PKTTAG tlv).
* @needs_hdr: the packet does not yet have a BDC header.
* @state: transmit state of the packet.
* @mac: descriptor related to destination for this packet.
*
@ -160,19 +172,17 @@ enum brcmf_fws_skb_state {
*/
struct brcmf_skbuff_cb {
u16 if_flags;
u8 da[ETH_ALEN];
u32 htod;
u8 needs_hdr;
enum brcmf_fws_skb_state state;
struct brcmf_fws_mac_descriptor *mac;
};
/**
/*
* macro casting skbuff control buffer to struct brcmf_skbuff_cb.
*/
#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
/**
/*
* sk_buff control if flags
*
* b[11] - packet sent upon firmware request.
@ -207,7 +217,7 @@ struct brcmf_skbuff_cb {
BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
/**
/*
* sk_buff control packet identifier
*
* 32-bit packet identifier used in PKTTAG tlv from host to dongle.
@ -242,6 +252,61 @@ struct brcmf_skbuff_cb {
BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
#define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
#define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
#define brcmf_txstatus_get_field(txs, field) \
brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
/**
* enum brcmf_fws_fifo - fifo indices used by dongle firmware.
*
* @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
* @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
* @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
* @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
* @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
* @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
* @BRCMF_FWS_FIFO_COUNT: number of fifos.
*/
enum brcmf_fws_fifo {
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VO,
BRCMF_FWS_FIFO_BCMC,
BRCMF_FWS_FIFO_ATIM,
BRCMF_FWS_FIFO_COUNT
};
/**
* enum brcmf_fws_txstatus - txstatus flag values.
*
* @BRCMF_FWS_TXSTATUS_DISCARD:
* host is free to discard the packet.
* @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
* 802.11 core suppressed the packet.
* @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
* firmware suppress the packet as device is already in PS mode.
* @BRCMF_FWS_TXSTATUS_FW_TOSSED:
* firmware tossed the packet.
*/
enum brcmf_fws_txstatus {
BRCMF_FWS_TXSTATUS_DISCARD,
BRCMF_FWS_TXSTATUS_CORE_SUPPRESS,
BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS,
BRCMF_FWS_TXSTATUS_FW_TOSSED
};
enum brcmf_fws_fcmode {
BRCMF_FWS_FCMODE_NONE,
BRCMF_FWS_FCMODE_IMPLIED_CREDIT,
@ -255,20 +320,28 @@ enum brcmf_fws_fcmode {
* @mac_handle: handle for mac entry determined by firmware.
* @interface_id: interface index.
* @state: current state.
* @suppressed: mac entry is suppressed.
* @generation: generation bit.
* @ac_bitmap: ac queue bitmap.
* @requested_credit: credits requested by firmware.
* @ea: ethernet address.
* @seq: per-node free-running sequence.
* @psq: power-save queue.
* @transit_count: packet in transit to firmware.
*/
struct brcmf_fws_mac_descriptor {
u8 occupied;
u8 mac_handle;
u8 interface_id;
u8 state;
bool suppressed;
u8 generation;
u8 ac_bitmap;
u8 requested_credit;
u8 ea[ETH_ALEN];
u8 seq[BRCMF_FWS_FIFO_COUNT];
struct pktq psq;
int transit_count;
};
#define BRCMF_FWS_HANGER_MAXITEMS 1024
@ -276,14 +349,14 @@ struct brcmf_fws_mac_descriptor {
/**
* enum brcmf_fws_hanger_item_state - state of hanger item.
*
* @WLFC_HANGER_ITEM_STATE_FREE: item is free for use.
* @WLFC_HANGER_ITEM_STATE_INUSE: item is in use.
* @WLFC_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
* @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
*/
enum brcmf_fws_hanger_item_state {
WLFC_HANGER_ITEM_STATE_FREE = 1,
WLFC_HANGER_ITEM_STATE_INUSE,
WLFC_HANGER_ITEM_STATE_INUSE_SUPPRESSED
BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1,
BRCMF_FWS_HANGER_ITEM_STATE_INUSE,
BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
};
@ -292,21 +365,17 @@ enum brcmf_fws_hanger_item_state {
*
* @state: entry is either free or occupied.
* @gen: generation.
* @identifier: packet identifier.
* @pkt: packet itself.
*/
struct brcmf_fws_hanger_item {
enum brcmf_fws_hanger_item_state state;
u8 gen;
u8 pad[2];
u32 identifier;
struct sk_buff *pkt;
};
/**
* struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
*
* @max_items: number of packets it can hold.
* @pushed: packets pushed to await txstatus.
* @popped: packets popped upon handling txstatus.
* @failed_to_push: packets that could not be pushed.
@ -332,20 +401,39 @@ struct brcmf_fws_info {
struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE];
struct brcmf_fws_mac_descriptor other;
enum brcmf_fws_fcmode fcmode;
int fifo_credit[NL80211_NUM_ACS+1+1];
int fifo_credit[BRCMF_FWS_FIFO_COUNT];
};
/*
* brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
*/
static const int brcmf_fws_prio2fifo[] = {
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BK,
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VO,
BRCMF_FWS_FIFO_AC_VO
};
static int fcmode;
module_param(fcmode, int, S_IRUSR);
MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control");
/**
* brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
*/
#define BRCMF_FWS_TLV_DEF(name, id, len) \
case BRCMF_FWS_TYPE_ ## name: \
return len;
/**
* brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
*
* @fws: firmware-signalling information.
* @id: identifier of the TLV.
*
* Return: the specified length for the given TLV; Otherwise -EINVAL.
*/
static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
enum brcmf_fws_tlv_type id)
{
@ -360,6 +448,30 @@ static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
}
#undef BRCMF_FWS_TLV_DEF
static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg)
{
u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
return ifidx == *(int *)arg;
}
static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
int ifidx)
{
bool (*matchfn)(struct sk_buff *, void *) = NULL;
struct sk_buff *skb;
int prec;
if (ifidx != -1)
matchfn = brcmf_fws_ifidx_match;
for (prec = 0; prec < q->num_prec; prec++) {
skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
while (skb) {
brcmf_txfinalize(fws->drvr, skb, false);
skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
}
}
}
static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
{
int i;
@ -367,10 +479,10 @@ static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
brcmf_dbg(TRACE, "enter\n");
memset(hanger, 0, sizeof(*hanger));
for (i = 0; i < ARRAY_SIZE(hanger->items); i++)
hanger->items[i].state = WLFC_HANGER_ITEM_STATE_FREE;
hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
}
static __used u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
{
u32 i;
@ -378,7 +490,7 @@ static __used u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS;
while (i != h->slot_pos) {
if (h->items[i].state == WLFC_HANGER_ITEM_STATE_FREE) {
if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
h->slot_pos = i;
return i;
}
@ -391,7 +503,7 @@ static __used u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
return BRCMF_FWS_HANGER_MAXITEMS;
}
static __used int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
struct sk_buff *pkt, u32 slot_id)
{
brcmf_dbg(TRACE, "enter\n");
@ -406,12 +518,11 @@ static __used int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE;
h->items[slot_id].pkt = pkt;
h->items[slot_id].identifier = slot_id;
h->pushed++;
return 0;
}
static __used int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
u32 slot_id, struct sk_buff **pktout,
bool remove_item)
{
@ -429,7 +540,6 @@ static __used int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
if (remove_item) {
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
h->items[slot_id].pkt = NULL;
h->items[slot_id].identifier = 0;
h->items[slot_id].gen = 0xff;
h->popped++;
}
@ -446,16 +556,16 @@ static __used int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
h->items[slot_id].gen = gen;
if (h->items[slot_id].state != WLFC_HANGER_ITEM_STATE_INUSE) {
if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_INUSE) {
brcmf_err("entry not in use\n");
return -EINVAL;
}
h->items[slot_id].state = WLFC_HANGER_ITEM_STATE_INUSE_SUPPRESSED;
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED;
return 0;
}
static __used int brcmf_fws_hanger_get_genbit(struct brcmf_fws_hanger *hanger,
static int brcmf_fws_hanger_get_genbit(struct brcmf_fws_hanger *hanger,
struct sk_buff *pkt, u32 slot_id,
int *gen)
{
@ -542,17 +652,50 @@ brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info *fws, u8 *ea)
return ERR_PTR(-ENOENT);
}
static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_mac_descriptor *entry,
bool (*fn)(struct sk_buff *, void *),
static struct brcmf_fws_mac_descriptor*
brcmf_fws_find_mac_desc(struct brcmf_fws_info *fws, int ifidx, u8 *da)
{
struct brcmf_fws_mac_descriptor *entry = &fws->other;
struct brcmf_if *ifp;
bool multicast;
brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
multicast = is_multicast_ether_addr(da);
ifp = fws->drvr->iflist[ifidx ? ifidx + 1 : 0];
if (WARN_ON(!ifp))
goto done;
/* Multicast destination and P2P clients get the interface entry.
* STA gets the interface entry if there is no exact match. For
* example, TDLS destinations have their own entry.
*/
entry = NULL;
if ((/* ifp->iftype == 0 ||*/ multicast) && ifp->fws_desc)
entry = ifp->fws_desc;
if (entry != NULL && multicast)
goto done;
entry = brcmf_fws_mac_descriptor_lookup(fws, da);
if (IS_ERR(entry))
entry = &fws->other;
done:
brcmf_dbg(TRACE, "exit: entry=%p\n", entry);
return entry;
}
static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info *fws,
struct brcmf_fws_mac_descriptor *entry,
int ifidx)
{
brcmf_dbg(TRACE, "enter: entry=(ea=%pM,ifid=%d), ifidx=%d\n",
brcmf_dbg(TRACE, "enter: entry=(ea=%pM, ifid=%d), ifidx=%d\n",
entry->ea, entry->interface_id, ifidx);
if (entry->occupied && (fn == NULL || (ifidx == entry->interface_id))) {
brcmf_dbg(TRACE, "flush delayQ: ifidx=%d, qlen=%d\n",
if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) {
brcmf_dbg(TRACE, "flush psq: ifidx=%d, qlen=%d\n",
ifidx, entry->psq.len);
/* release packets held in DELAYQ */
brcmu_pktq_flush(&entry->psq, true, fn, &ifidx);
brcmf_fws_psq_flush(fws, &entry->psq, ifidx);
entry->occupied = !!(entry->psq.len);
}
}
@ -587,12 +730,6 @@ static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws,
}
}
static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg)
{
u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
return ifidx == *(int *)arg;
}
static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
{
int i;
@ -609,9 +746,9 @@ static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
/* cleanup individual nodes */
table = &fws->nodes[0];
for (i = 0; i < ARRAY_SIZE(fws->nodes); i++)
brcmf_fws_mac_desc_cleanup(&table[i], matchfn, ifidx);
brcmf_fws_mac_desc_cleanup(fws, &table[i], ifidx);
brcmf_fws_mac_desc_cleanup(&fws->other, matchfn, ifidx);
brcmf_fws_mac_desc_cleanup(fws, &fws->other, ifidx);
brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx);
brcmf_fws_hanger_cleanup(&fws->hanger, matchfn, ifidx);
}
@ -637,17 +774,15 @@ int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
entry = &fws->nodes[mac_handle & 0x1F];
if (type == BRCMF_FWS_TYPE_MACDESC_DEL) {
brcmf_dbg(TRACE, "deleting mac %pM idx %d\n", addr, ifidx);
if (entry->occupied) {
entry->occupied = 0;
entry->state = BRCMF_FWS_STATE_CLOSE;
entry->requested_credit = 0;
} else {
if (entry->occupied)
brcmf_fws_clear_mac_descriptor(entry);
else
fws->stats.mac_update_failed++;
}
return 0;
}
brcmf_dbg(TRACE, "add mac %pM idx %d\n", addr, ifidx);
brcmf_dbg(TRACE,
"add mac %pM handle %u idx %d\n", addr, mac_handle, ifidx);
existing = brcmf_fws_mac_descriptor_lookup(fws, addr);
if (IS_ERR(existing)) {
if (!entry->occupied) {
@ -674,6 +809,51 @@ int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
return 0;
}
static int
brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
{
u8 flags;
u32 status;
u32 hslot;
int ret;
struct sk_buff *skb;
struct brcmf_fws_mac_descriptor *entry = NULL;
status = le32_to_cpu(*(__le32 *)data);
flags = brcmf_txstatus_get_field(status, FLAGS);
hslot = brcmf_txstatus_get_field(status, HSLOT);
fws->stats.txs_indicate++;
brcmf_dbg(TRACE, "status: flags=0x%X, hslot=%d\n",
flags, hslot);
if (flags == BRCMF_FWS_TXSTATUS_DISCARD)
fws->stats.txs_discard++;
else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED)
fws->stats.txs_tossed++;
else
brcmf_err("unexpected txstatus\n");
ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
true);
if (ret != 0) {
brcmf_err("no packet in hanger slot: hslot=%d\n", hslot);
return ret;
}
entry = brcmf_skbcb(skb)->mac;
if (WARN_ON(!entry)) {
ret = -EINVAL;
goto done;
}
entry->transit_count--;
done:
brcmf_txfinalize(fws->drvr, skb, true);
return ret;
}
static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
{
__le32 timestamp;
@ -723,7 +903,8 @@ int brcmf_fws_init(struct brcmf_pub *drvr)
/* enable rssi signals */
if (drvr->fw_signals)
tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS |
BRCMF_FWS_FLAGS_XONXOFF_SIGNALS;
BRCMF_FWS_FLAGS_XONXOFF_SIGNALS |
BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS;
spin_lock_init(&drvr->fws_spinlock);
@ -839,7 +1020,6 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
case BRCMF_FWS_TYPE_MAC_OPEN:
case BRCMF_FWS_TYPE_MAC_CLOSE:
case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:
case BRCMF_FWS_TYPE_TXSTATUS:
case BRCMF_FWS_TYPE_PKTTAG:
case BRCMF_FWS_TYPE_INTERFACE_OPEN:
case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
@ -853,6 +1033,9 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
case BRCMF_FWS_TYPE_MACDESC_DEL:
brcmf_fws_macdesc_indicate(fws, type, data);
break;
case BRCMF_FWS_TYPE_TXSTATUS:
brcmf_fws_txstatus_indicate(fws, data);
break;
case BRCMF_FWS_TYPE_RSSI:
brcmf_fws_rssi_indicate(fws, *data);
break;
@ -885,6 +1068,174 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
return 0;
}
static int brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
{
struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
u8 *wlh;
u16 data_offset;
u8 fillers;
__le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
brcmf_dbg(TRACE, "enter: ea=%pM, ifidx=%u, pkttag=0x%08X\n",
entry->ea, entry->interface_id, le32_to_cpu(pkttag));
/* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
data_offset = 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
fillers = round_up(data_offset, 4) - data_offset;
data_offset += fillers;
skb_push(skb, data_offset);
wlh = skb->data;
wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
memcpy(&wlh[2], &pkttag, sizeof(pkttag));
wlh += BRCMF_FWS_TYPE_PKTTAG_LEN + 2;
if (fillers)
memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
brcmf_proto_hdrpush(fws->drvr, brcmf_skb_if_flags_get_field(skb, INDEX),
data_offset >> 2, skb);
return 0;
}
static int brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *p)
{
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
struct brcmf_fws_mac_descriptor *entry = skcb->mac;
int rc = 0;
bool header_needed;
int hslot = BRCMF_FWS_HANGER_MAXITEMS;
u8 free_ctr;
u8 ifidx;
u8 flags;
header_needed = skcb->state == BRCMF_FWS_SKBSTATE_NEW;
if (header_needed) {
/* obtaining free slot may fail, but that will be caught
* by the hanger push. This assures the packet has a BDC
* header upon return.
*/
hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
free_ctr = entry->seq[fifo];
brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
brcmf_skb_htod_tag_set_field(p, FREERUN, free_ctr);
brcmf_skb_htod_tag_set_field(p, GENERATION, 1);
entry->transit_count++;
}
brcmf_skb_if_flags_set_field(p, TRANSMIT, 1);
brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST;
if (!(skcb->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK)) {
/*
Indicate that this packet is being sent in response to an
explicit request from the firmware side.
*/
flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED;
}
brcmf_skb_htod_tag_set_field(p, FLAGS, flags);
if (header_needed) {
brcmf_fws_hdrpush(fws, p);
rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
if (rc)
brcmf_err("hanger push failed: rc=%d\n", rc);
} else {
int gen;
/* remove old header */
rc = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, p);
if (rc == 0) {
hslot = brcmf_skb_htod_tag_get_field(p, HSLOT);
brcmf_fws_hanger_get_genbit(&fws->hanger, p,
hslot, &gen);
brcmf_skb_htod_tag_set_field(p, GENERATION, gen);
/* push new header */
brcmf_fws_hdrpush(fws, p);
}
}
return rc;
}
static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *skb)
{
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
struct brcmf_fws_mac_descriptor *entry;
struct brcmf_bus *bus = fws->drvr->bus_if;
int rc;
entry = skcb->mac;
if (IS_ERR(entry))
return PTR_ERR(entry);
rc = brcmf_fws_precommit_skb(fws, fifo, skb);
if (rc < 0) {
fws->stats.generic_error++;
goto done;
}
rc = brcmf_bus_txdata(bus, skb);
if (rc < 0)
goto done;
entry->seq[fifo]++;
fws->stats.pkt2bus++;
return rc;
done:
brcmf_txfinalize(fws->drvr, skb, false);
return rc;
}
int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
{
struct brcmf_pub *drvr = ifp->drvr;
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
struct ethhdr *eh = (struct ethhdr *)(skb->data);
ulong flags;
u8 ifidx = ifp->ifidx;
int fifo = BRCMF_FWS_FIFO_BCMC;
bool multicast = is_multicast_ether_addr(eh->h_dest);
/* determine the priority */
if (!skb->priority)
skb->priority = cfg80211_classify8021d(skb);
drvr->tx_multicast += !!multicast;
if (ntohs(eh->h_proto) == ETH_P_PAE)
atomic_inc(&ifp->pend_8021x_cnt);
if (!brcmf_fws_fc_active(drvr->fws)) {
/* If the protocol uses a data header, apply it */
brcmf_proto_hdrpush(drvr, ifidx, 0, skb);
/* Use bus module to send data frame */
return brcmf_bus_txdata(drvr->bus_if, skb);
}
/* set control buffer information */
skcb->mac = brcmf_fws_find_mac_desc(drvr->fws, ifidx, eh->h_dest);
skcb->state = BRCMF_FWS_SKBSTATE_NEW;
brcmf_skb_if_flags_set_field(skb, INDEX, ifidx);
if (!multicast)
fifo = brcmf_fws_prio2fifo[skb->priority];
brcmf_skb_if_flags_set_field(skb, FIFO, fifo);
brcmf_skb_if_flags_set_field(skb, CREDITCHECK, 0);
brcmf_dbg(TRACE, "ea=%pM, multi=%d, fifo=%d\n", eh->h_dest,
multicast, fifo);
brcmf_fws_lock(drvr, flags);
brcmf_fws_commit_skb(drvr->fws, fifo, skb);
brcmf_fws_unlock(drvr, flags);
return 0;
}
void brcmf_fws_reset_interface(struct brcmf_if *ifp)
{
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;

1
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h
View File

@ -23,6 +23,7 @@ void brcmf_fws_deinit(struct brcmf_pub *drvr);
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws);
int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
struct sk_buff *skb);
int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb);
void brcmf_fws_reset_interface(struct brcmf_if *ifp);
void brcmf_fws_add_interface(struct brcmf_if *ifp);