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2514 lines
68 KiB
2514 lines
68 KiB
// SPDX-License-Identifier: ISC |
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/* |
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* Copyright (c) 2010 Broadcom Corporation |
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*/ |
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#include <linux/types.h> |
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#include <linux/module.h> |
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#include <linux/if_ether.h> |
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#include <linux/spinlock.h> |
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#include <linux/skbuff.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/err.h> |
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#include <linux/jiffies.h> |
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#include <net/cfg80211.h> |
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#include <brcmu_utils.h> |
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#include <brcmu_wifi.h> |
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#include "core.h" |
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#include "debug.h" |
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#include "bus.h" |
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#include "fwil.h" |
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#include "fwil_types.h" |
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#include "fweh.h" |
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#include "fwsignal.h" |
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#include "p2p.h" |
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#include "cfg80211.h" |
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#include "proto.h" |
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#include "bcdc.h" |
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#include "common.h" |
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/** |
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* DOC: Firmware Signalling |
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* |
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* Firmware can send signals to host and vice versa, which are passed in the |
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* data packets using TLV based header. This signalling layer is on top of the |
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* BDC bus protocol layer. |
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*/ |
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/* |
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* single definition for firmware-driver flow control tlv's. |
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* |
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* each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length). |
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* A length value 0 indicates variable length tlv. |
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*/ |
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#define BRCMF_FWS_TLV_DEFLIST \ |
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BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \ |
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BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \ |
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BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \ |
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BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \ |
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BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \ |
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BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \ |
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BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \ |
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BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \ |
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BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \ |
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BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \ |
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BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \ |
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BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \ |
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BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \ |
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BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \ |
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BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \ |
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BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \ |
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BRCMF_FWS_TLV_DEF(FILLER, 255, 0) |
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/* |
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* enum brcmf_fws_tlv_type - definition of tlv identifiers. |
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*/ |
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#define BRCMF_FWS_TLV_DEF(name, id, len) \ |
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BRCMF_FWS_TYPE_ ## name = id, |
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enum brcmf_fws_tlv_type { |
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BRCMF_FWS_TLV_DEFLIST |
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BRCMF_FWS_TYPE_INVALID |
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}; |
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#undef BRCMF_FWS_TLV_DEF |
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/* |
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* enum brcmf_fws_tlv_len - definition of tlv lengths. |
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*/ |
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#define BRCMF_FWS_TLV_DEF(name, id, len) \ |
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BRCMF_FWS_TYPE_ ## name ## _LEN = (len), |
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enum brcmf_fws_tlv_len { |
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BRCMF_FWS_TLV_DEFLIST |
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}; |
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#undef BRCMF_FWS_TLV_DEF |
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/* AMPDU rx reordering definitions */ |
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#define BRCMF_RXREORDER_FLOWID_OFFSET 0 |
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#define BRCMF_RXREORDER_MAXIDX_OFFSET 2 |
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#define BRCMF_RXREORDER_FLAGS_OFFSET 4 |
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#define BRCMF_RXREORDER_CURIDX_OFFSET 6 |
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#define BRCMF_RXREORDER_EXPIDX_OFFSET 8 |
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#define BRCMF_RXREORDER_DEL_FLOW 0x01 |
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#define BRCMF_RXREORDER_FLUSH_ALL 0x02 |
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#define BRCMF_RXREORDER_CURIDX_VALID 0x04 |
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#define BRCMF_RXREORDER_EXPIDX_VALID 0x08 |
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#define BRCMF_RXREORDER_NEW_HOLE 0x10 |
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#ifdef DEBUG |
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/* |
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* brcmf_fws_tlv_names - array of tlv names. |
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*/ |
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#define BRCMF_FWS_TLV_DEF(name, id, len) \ |
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{ id, #name }, |
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static struct { |
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enum brcmf_fws_tlv_type id; |
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const char *name; |
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} brcmf_fws_tlv_names[] = { |
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BRCMF_FWS_TLV_DEFLIST |
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}; |
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#undef BRCMF_FWS_TLV_DEF |
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static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) |
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{ |
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int i; |
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for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++) |
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if (brcmf_fws_tlv_names[i].id == id) |
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return brcmf_fws_tlv_names[i].name; |
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return "INVALID"; |
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} |
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#else |
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static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) |
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{ |
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return "NODEBUG"; |
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} |
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#endif /* DEBUG */ |
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/* |
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* The PKTTAG tlv has additional bytes when firmware-signalling |
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* mode has REUSESEQ flag set. |
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*/ |
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#define BRCMF_FWS_TYPE_SEQ_LEN 2 |
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/* |
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* flags used to enable tlv signalling from firmware. |
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*/ |
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#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001 |
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#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002 |
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#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004 |
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#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008 |
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#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010 |
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#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020 |
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#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040 |
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#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32 |
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#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff |
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#define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0 |
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#define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1 |
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#define BRCMF_FWS_FLOWCONTROL_HIWATER 128 |
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#define BRCMF_FWS_FLOWCONTROL_LOWATER 64 |
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#define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2) |
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#define BRCMF_FWS_PSQ_LEN 256 |
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#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01 |
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#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02 |
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#define BRCMF_FWS_RET_OK_NOSCHEDULE 0 |
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#define BRCMF_FWS_RET_OK_SCHEDULE 1 |
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#define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3 /* seq reuse */ |
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#define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \ |
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((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \ |
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(((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) |
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#define BRCMF_FWS_MODE_GET_REUSESEQ(x) \ |
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(((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1) |
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/** |
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* enum brcmf_fws_skb_state - indicates processing state of skb. |
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* |
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* @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver. |
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* @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue. |
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* @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware. |
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* @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info. |
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*/ |
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enum brcmf_fws_skb_state { |
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BRCMF_FWS_SKBSTATE_NEW, |
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BRCMF_FWS_SKBSTATE_DELAYED, |
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BRCMF_FWS_SKBSTATE_SUPPRESSED, |
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BRCMF_FWS_SKBSTATE_TIM |
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}; |
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/** |
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* struct brcmf_skbuff_cb - control buffer associated with skbuff. |
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* |
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* @bus_flags: 2 bytes reserved for bus specific parameters |
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* @if_flags: holds interface index and packet related flags. |
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* @htod: host to device packet identifier (used in PKTTAG tlv). |
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* @htod_seq: this 16-bit is original seq number for every suppress packet. |
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* @state: transmit state of the packet. |
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* @mac: descriptor related to destination for this packet. |
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* |
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* This information is stored in control buffer struct sk_buff::cb, which |
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* provides 48 bytes of storage so this structure should not exceed that. |
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*/ |
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struct brcmf_skbuff_cb { |
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u16 bus_flags; |
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u16 if_flags; |
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u32 htod; |
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u16 htod_seq; |
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enum brcmf_fws_skb_state state; |
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struct brcmf_fws_mac_descriptor *mac; |
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}; |
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/* |
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* macro casting skbuff control buffer to struct brcmf_skbuff_cb. |
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*/ |
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#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb)) |
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/* |
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* sk_buff control if flags |
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* |
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* b[11] - packet sent upon firmware request. |
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* b[10] - packet only contains signalling data. |
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* b[9] - packet is a tx packet. |
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* b[8] - packet used requested credit |
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* b[7] - interface in AP mode. |
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* b[3:0] - interface index. |
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*/ |
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#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800 |
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#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11 |
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#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400 |
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#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10 |
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#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200 |
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#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9 |
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#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100 |
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#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8 |
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#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080 |
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#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7 |
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#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f |
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#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0 |
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#define brcmf_skb_if_flags_set_field(skb, field, value) \ |
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brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \ |
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BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ |
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BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value)) |
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#define brcmf_skb_if_flags_get_field(skb, field) \ |
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brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \ |
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BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ |
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BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT) |
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/* |
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* sk_buff control packet identifier |
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* |
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* 32-bit packet identifier used in PKTTAG tlv from host to dongle. |
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* |
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* - Generated at the host (e.g. dhd) |
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* - Seen as a generic sequence number by firmware except for the flags field. |
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* |
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* Generation : b[31] => generation number for this packet [host->fw] |
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* OR, current generation number [fw->host] |
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* Flags : b[30:27] => command, status flags |
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* FIFO-AC : b[26:24] => AC-FIFO id |
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* h-slot : b[23:8] => hanger-slot |
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* freerun : b[7:0] => A free running counter |
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*/ |
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#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000 |
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#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31 |
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#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000 |
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#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27 |
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#define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000 |
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#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24 |
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#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00 |
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#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8 |
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#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff |
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#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0 |
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#define brcmf_skb_htod_tag_set_field(skb, field, value) \ |
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brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \ |
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BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
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BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value)) |
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#define brcmf_skb_htod_tag_get_field(skb, field) \ |
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brcmu_maskget32(brcmf_skbcb(skb)->htod, \ |
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BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ |
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BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT) |
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#define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000 |
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#define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13 |
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#define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000 |
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#define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12 |
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#define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff |
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#define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0 |
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#define brcmf_skb_htod_seq_set_field(skb, field, value) \ |
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brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \ |
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BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ |
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BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value)) |
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#define brcmf_skb_htod_seq_get_field(skb, field) \ |
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brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \ |
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BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ |
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BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT) |
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#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000 |
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#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31 |
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#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000 |
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#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27 |
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#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000 |
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#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24 |
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#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00 |
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#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8 |
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#define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF |
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#define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0 |
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#define brcmf_txstatus_get_field(txs, field) \ |
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brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \ |
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BRCMF_FWS_TXSTAT_ ## field ## _SHIFT) |
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/* How long to defer borrowing in jiffies */ |
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#define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10) |
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/** |
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* enum brcmf_fws_txstatus - txstatus flag values. |
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* |
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* @BRCMF_FWS_TXSTATUS_DISCARD: |
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* host is free to discard the packet. |
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* @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS: |
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* 802.11 core suppressed the packet. |
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* @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS: |
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* firmware suppress the packet as device is already in PS mode. |
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* @BRCMF_FWS_TXSTATUS_FW_TOSSED: |
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* firmware tossed the packet. |
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* @BRCMF_FWS_TXSTATUS_FW_DISCARD_NOACK: |
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* firmware tossed the packet after retries. |
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* @BRCMF_FWS_TXSTATUS_FW_SUPPRESS_ACKED: |
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* firmware wrongly reported suppressed previously, now fixing to acked. |
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* @BRCMF_FWS_TXSTATUS_HOST_TOSSED: |
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* host tossed the packet. |
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*/ |
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enum brcmf_fws_txstatus { |
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BRCMF_FWS_TXSTATUS_DISCARD, |
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BRCMF_FWS_TXSTATUS_CORE_SUPPRESS, |
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BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS, |
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BRCMF_FWS_TXSTATUS_FW_TOSSED, |
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BRCMF_FWS_TXSTATUS_FW_DISCARD_NOACK, |
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BRCMF_FWS_TXSTATUS_FW_SUPPRESS_ACKED, |
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BRCMF_FWS_TXSTATUS_HOST_TOSSED |
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}; |
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enum brcmf_fws_fcmode { |
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BRCMF_FWS_FCMODE_NONE, |
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BRCMF_FWS_FCMODE_IMPLIED_CREDIT, |
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BRCMF_FWS_FCMODE_EXPLICIT_CREDIT |
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}; |
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enum brcmf_fws_mac_desc_state { |
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BRCMF_FWS_STATE_OPEN = 1, |
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BRCMF_FWS_STATE_CLOSE |
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}; |
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/** |
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* struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface |
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* |
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* @name: name of the descriptor. |
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* @occupied: slot is in use. |
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* @mac_handle: handle for mac entry determined by firmware. |
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* @interface_id: interface index. |
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* @state: current state. |
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* @suppressed: mac entry is suppressed. |
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* @generation: generation bit. |
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* @ac_bitmap: ac queue bitmap. |
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* @requested_credit: credits requested by firmware. |
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* @requested_packet: packet requested by firmware. |
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* @ea: ethernet address. |
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* @seq: per-node free-running sequence. |
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* @psq: power-save queue. |
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* @transit_count: packet in transit to firmware. |
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* @suppr_transit_count: suppressed packet in transit to firmware. |
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* @send_tim_signal: if set tim signal will be sent. |
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* @traffic_pending_bmp: traffic pending bitmap. |
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* @traffic_lastreported_bmp: traffic last reported bitmap. |
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*/ |
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struct brcmf_fws_mac_descriptor { |
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char name[16]; |
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u8 occupied; |
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u8 mac_handle; |
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u8 interface_id; |
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u8 state; |
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bool suppressed; |
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u8 generation; |
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u8 ac_bitmap; |
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u8 requested_credit; |
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u8 requested_packet; |
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u8 ea[ETH_ALEN]; |
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u8 seq[BRCMF_FWS_FIFO_COUNT]; |
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struct pktq psq; |
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int transit_count; |
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int suppr_transit_count; |
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bool send_tim_signal; |
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u8 traffic_pending_bmp; |
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u8 traffic_lastreported_bmp; |
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}; |
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#define BRCMF_FWS_HANGER_MAXITEMS 3072 |
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#define BRCMF_BORROW_RATIO 3 |
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/** |
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* enum brcmf_fws_hanger_item_state - state of hanger item. |
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* |
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* @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use. |
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* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use. |
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* @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed. |
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*/ |
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enum brcmf_fws_hanger_item_state { |
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BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1, |
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BRCMF_FWS_HANGER_ITEM_STATE_INUSE, |
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BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED |
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}; |
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/** |
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* struct brcmf_fws_hanger_item - single entry for tx pending packet. |
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* |
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* @state: entry is either free or occupied. |
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* @pkt: packet itself. |
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*/ |
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struct brcmf_fws_hanger_item { |
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enum brcmf_fws_hanger_item_state state; |
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struct sk_buff *pkt; |
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}; |
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/** |
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* struct brcmf_fws_hanger - holds packets awaiting firmware txstatus. |
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* |
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* @pushed: packets pushed to await txstatus. |
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* @popped: packets popped upon handling txstatus. |
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* @failed_to_push: packets that could not be pushed. |
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* @failed_to_pop: packets that could not be popped. |
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* @failed_slotfind: packets for which failed to find an entry. |
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* @slot_pos: last returned item index for a free entry. |
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* @items: array of hanger items. |
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*/ |
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struct brcmf_fws_hanger { |
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u32 pushed; |
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u32 popped; |
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u32 failed_to_push; |
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u32 failed_to_pop; |
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u32 failed_slotfind; |
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u32 slot_pos; |
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struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS]; |
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}; |
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struct brcmf_fws_macdesc_table { |
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struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE]; |
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struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS]; |
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struct brcmf_fws_mac_descriptor other; |
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}; |
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struct brcmf_fws_stats { |
|
u32 tlv_parse_failed; |
|
u32 tlv_invalid_type; |
|
u32 header_only_pkt; |
|
u32 header_pulls; |
|
u32 pkt2bus; |
|
u32 send_pkts[5]; |
|
u32 requested_sent[5]; |
|
u32 generic_error; |
|
u32 mac_update_failed; |
|
u32 mac_ps_update_failed; |
|
u32 if_update_failed; |
|
u32 packet_request_failed; |
|
u32 credit_request_failed; |
|
u32 rollback_success; |
|
u32 rollback_failed; |
|
u32 delayq_full_error; |
|
u32 supprq_full_error; |
|
u32 txs_indicate; |
|
u32 txs_discard; |
|
u32 txs_supp_core; |
|
u32 txs_supp_ps; |
|
u32 txs_tossed; |
|
u32 txs_host_tossed; |
|
u32 bus_flow_block; |
|
u32 fws_flow_block; |
|
}; |
|
|
|
struct brcmf_fws_info { |
|
struct brcmf_pub *drvr; |
|
spinlock_t spinlock; |
|
ulong flags; |
|
struct brcmf_fws_stats stats; |
|
struct brcmf_fws_hanger hanger; |
|
enum brcmf_fws_fcmode fcmode; |
|
bool fw_signals; |
|
bool bcmc_credit_check; |
|
struct brcmf_fws_macdesc_table desc; |
|
struct workqueue_struct *fws_wq; |
|
struct work_struct fws_dequeue_work; |
|
u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT]; |
|
int fifo_credit[BRCMF_FWS_FIFO_COUNT]; |
|
int init_fifo_credit[BRCMF_FWS_FIFO_COUNT]; |
|
int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1] |
|
[BRCMF_FWS_FIFO_AC_VO + 1]; |
|
int deq_node_pos[BRCMF_FWS_FIFO_COUNT]; |
|
u32 fifo_credit_map; |
|
u32 fifo_delay_map; |
|
unsigned long borrow_defer_timestamp; |
|
bool bus_flow_blocked; |
|
bool creditmap_received; |
|
u8 mode; |
|
bool avoid_queueing; |
|
}; |
|
|
|
#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) |
|
{ |
|
switch (id) { |
|
BRCMF_FWS_TLV_DEFLIST |
|
default: |
|
fws->stats.tlv_invalid_type++; |
|
break; |
|
} |
|
return -EINVAL; |
|
} |
|
#undef BRCMF_FWS_TLV_DEF |
|
|
|
static void brcmf_fws_lock(struct brcmf_fws_info *fws) |
|
__acquires(&fws->spinlock) |
|
{ |
|
spin_lock_irqsave(&fws->spinlock, fws->flags); |
|
} |
|
|
|
static void brcmf_fws_unlock(struct brcmf_fws_info *fws) |
|
__releases(&fws->spinlock) |
|
{ |
|
spin_unlock_irqrestore(&fws->spinlock, fws->flags); |
|
} |
|
|
|
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_hanger_init(struct brcmf_fws_hanger *hanger) |
|
{ |
|
int i; |
|
|
|
memset(hanger, 0, sizeof(*hanger)); |
|
for (i = 0; i < ARRAY_SIZE(hanger->items); i++) |
|
hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
|
} |
|
|
|
static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h) |
|
{ |
|
u32 i; |
|
|
|
i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS; |
|
|
|
while (i != h->slot_pos) { |
|
if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
|
h->slot_pos = i; |
|
goto done; |
|
} |
|
i++; |
|
if (i == BRCMF_FWS_HANGER_MAXITEMS) |
|
i = 0; |
|
} |
|
brcmf_err("all slots occupied\n"); |
|
h->failed_slotfind++; |
|
i = BRCMF_FWS_HANGER_MAXITEMS; |
|
done: |
|
return i; |
|
} |
|
|
|
static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h, |
|
struct sk_buff *pkt, u32 slot_id) |
|
{ |
|
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
|
return -ENOENT; |
|
|
|
if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
|
brcmf_err("slot is not free\n"); |
|
h->failed_to_push++; |
|
return -EINVAL; |
|
} |
|
|
|
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE; |
|
h->items[slot_id].pkt = pkt; |
|
h->pushed++; |
|
return 0; |
|
} |
|
|
|
static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h, |
|
u32 slot_id, struct sk_buff **pktout, |
|
bool remove_item) |
|
{ |
|
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
|
return -ENOENT; |
|
|
|
if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
|
brcmf_err("entry not in use\n"); |
|
h->failed_to_pop++; |
|
return -EINVAL; |
|
} |
|
|
|
*pktout = h->items[slot_id].pkt; |
|
if (remove_item) { |
|
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
|
h->items[slot_id].pkt = NULL; |
|
h->popped++; |
|
} |
|
return 0; |
|
} |
|
|
|
static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q, |
|
int ifidx) |
|
{ |
|
struct brcmf_fws_hanger_item *hi; |
|
bool (*matchfn)(struct sk_buff *, void *) = NULL; |
|
struct sk_buff *skb; |
|
int prec; |
|
u32 hslot; |
|
|
|
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) { |
|
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
|
hi = &fws->hanger.items[hslot]; |
|
WARN_ON(skb != hi->pkt); |
|
hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
|
brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, |
|
true); |
|
brcmu_pkt_buf_free_skb(skb); |
|
skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); |
|
} |
|
} |
|
} |
|
|
|
static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h, |
|
u32 slot_id) |
|
{ |
|
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) |
|
return -ENOENT; |
|
|
|
if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { |
|
brcmf_err("entry not in use\n"); |
|
return -EINVAL; |
|
} |
|
|
|
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED; |
|
return 0; |
|
} |
|
|
|
static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws, |
|
bool (*fn)(struct sk_buff *, void *), |
|
int ifidx) |
|
{ |
|
struct brcmf_fws_hanger *h = &fws->hanger; |
|
struct sk_buff *skb; |
|
int i; |
|
enum brcmf_fws_hanger_item_state s; |
|
|
|
for (i = 0; i < ARRAY_SIZE(h->items); i++) { |
|
s = h->items[i].state; |
|
if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE || |
|
s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) { |
|
skb = h->items[i].pkt; |
|
if (fn == NULL || fn(skb, &ifidx)) { |
|
/* suppress packets freed from psq */ |
|
if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE) |
|
brcmu_pkt_buf_free_skb(skb); |
|
h->items[i].state = |
|
BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
|
} |
|
} |
|
} |
|
} |
|
|
|
static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws, |
|
struct brcmf_fws_mac_descriptor *desc) |
|
{ |
|
if (desc == &fws->desc.other) |
|
strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name)); |
|
else if (desc->mac_handle) |
|
scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d", |
|
desc->mac_handle, desc->interface_id); |
|
else |
|
scnprintf(desc->name, sizeof(desc->name), "MACIF:%d", |
|
desc->interface_id); |
|
} |
|
|
|
static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc, |
|
u8 *addr, u8 ifidx) |
|
{ |
|
brcmf_dbg(TRACE, |
|
"enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx); |
|
desc->occupied = 1; |
|
desc->state = BRCMF_FWS_STATE_OPEN; |
|
desc->requested_credit = 0; |
|
desc->requested_packet = 0; |
|
/* depending on use may need ifp->bsscfgidx instead */ |
|
desc->interface_id = ifidx; |
|
desc->ac_bitmap = 0xff; /* update this when handling APSD */ |
|
if (addr) |
|
memcpy(&desc->ea[0], addr, ETH_ALEN); |
|
} |
|
|
|
static |
|
void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc) |
|
{ |
|
brcmf_dbg(TRACE, |
|
"enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id); |
|
desc->occupied = 0; |
|
desc->state = BRCMF_FWS_STATE_CLOSE; |
|
desc->requested_credit = 0; |
|
desc->requested_packet = 0; |
|
} |
|
|
|
static struct brcmf_fws_mac_descriptor * |
|
brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry; |
|
int i; |
|
|
|
if (ea == NULL) |
|
return ERR_PTR(-EINVAL); |
|
|
|
entry = &fws->desc.nodes[0]; |
|
for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) { |
|
if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN)) |
|
return entry; |
|
entry++; |
|
} |
|
|
|
return ERR_PTR(-ENOENT); |
|
} |
|
|
|
static struct brcmf_fws_mac_descriptor* |
|
brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry; |
|
bool multicast; |
|
|
|
multicast = is_multicast_ether_addr(da); |
|
|
|
/* Multicast destination, STA and P2P clients get the interface entry. |
|
* STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations |
|
* have their own entry. |
|
*/ |
|
if (multicast && ifp->fws_desc) { |
|
entry = ifp->fws_desc; |
|
goto done; |
|
} |
|
|
|
entry = brcmf_fws_macdesc_lookup(fws, da); |
|
if (IS_ERR(entry)) |
|
entry = ifp->fws_desc; |
|
|
|
done: |
|
return entry; |
|
} |
|
|
|
static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws, |
|
struct brcmf_fws_mac_descriptor *entry, |
|
int fifo) |
|
{ |
|
struct brcmf_fws_mac_descriptor *if_entry; |
|
bool closed; |
|
|
|
/* for unique destination entries the related interface |
|
* may be closed. |
|
*/ |
|
if (entry->mac_handle) { |
|
if_entry = &fws->desc.iface[entry->interface_id]; |
|
if (if_entry->state == BRCMF_FWS_STATE_CLOSE) |
|
return true; |
|
} |
|
/* an entry is closed when the state is closed and |
|
* the firmware did not request anything. |
|
*/ |
|
closed = entry->state == BRCMF_FWS_STATE_CLOSE && |
|
!entry->requested_credit && !entry->requested_packet; |
|
|
|
/* Or firmware does not allow traffic for given fifo */ |
|
return closed || !(entry->ac_bitmap & BIT(fifo)); |
|
} |
|
|
|
static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws, |
|
struct brcmf_fws_mac_descriptor *entry, |
|
int ifidx) |
|
{ |
|
if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) { |
|
brcmf_fws_psq_flush(fws, &entry->psq, ifidx); |
|
entry->occupied = !!(entry->psq.len); |
|
} |
|
} |
|
|
|
static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws, |
|
bool (*fn)(struct sk_buff *, void *), |
|
int ifidx) |
|
{ |
|
struct brcmf_fws_hanger_item *hi; |
|
struct pktq *txq; |
|
struct sk_buff *skb; |
|
int prec; |
|
u32 hslot; |
|
|
|
txq = brcmf_bus_gettxq(fws->drvr->bus_if); |
|
if (IS_ERR(txq)) { |
|
brcmf_dbg(TRACE, "no txq to clean up\n"); |
|
return; |
|
} |
|
|
|
for (prec = 0; prec < txq->num_prec; prec++) { |
|
skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); |
|
while (skb) { |
|
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
|
hi = &fws->hanger.items[hslot]; |
|
WARN_ON(skb != hi->pkt); |
|
hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; |
|
brcmu_pkt_buf_free_skb(skb); |
|
skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); |
|
} |
|
} |
|
} |
|
|
|
static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx) |
|
{ |
|
int i; |
|
struct brcmf_fws_mac_descriptor *table; |
|
bool (*matchfn)(struct sk_buff *, void *) = NULL; |
|
|
|
if (fws == NULL) |
|
return; |
|
|
|
if (ifidx != -1) |
|
matchfn = brcmf_fws_ifidx_match; |
|
|
|
/* cleanup individual nodes */ |
|
table = &fws->desc.nodes[0]; |
|
for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) |
|
brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx); |
|
|
|
brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx); |
|
brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx); |
|
brcmf_fws_hanger_cleanup(fws, matchfn, ifidx); |
|
} |
|
|
|
static u8 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 = 0; |
|
u8 fillers; |
|
__le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod); |
|
__le16 pktseq = cpu_to_le16(brcmf_skbcb(skb)->htod_seq); |
|
|
|
brcmf_dbg(TRACE, "enter: %s, idx=%d hslot=%d htod %X seq %X\n", |
|
entry->name, brcmf_skb_if_flags_get_field(skb, INDEX), |
|
(le32_to_cpu(pkttag) >> 8) & 0xffff, |
|
brcmf_skbcb(skb)->htod, brcmf_skbcb(skb)->htod_seq); |
|
if (entry->send_tim_signal) |
|
data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; |
|
if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) |
|
data_offset += BRCMF_FWS_TYPE_SEQ_LEN; |
|
/* +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)); |
|
if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { |
|
wlh[1] += BRCMF_FWS_TYPE_SEQ_LEN; |
|
memcpy(&wlh[2 + BRCMF_FWS_TYPE_PKTTAG_LEN], &pktseq, |
|
sizeof(pktseq)); |
|
} |
|
wlh += wlh[1] + 2; |
|
|
|
if (entry->send_tim_signal) { |
|
entry->send_tim_signal = false; |
|
wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP; |
|
wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; |
|
wlh[2] = entry->mac_handle; |
|
wlh[3] = entry->traffic_pending_bmp; |
|
brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n", |
|
entry->mac_handle, entry->traffic_pending_bmp); |
|
wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2; |
|
entry->traffic_lastreported_bmp = entry->traffic_pending_bmp; |
|
} |
|
if (fillers) |
|
memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers); |
|
|
|
return (u8)(data_offset >> 2); |
|
} |
|
|
|
static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws, |
|
struct brcmf_fws_mac_descriptor *entry, |
|
int fifo, bool send_immediately) |
|
{ |
|
struct sk_buff *skb; |
|
struct brcmf_skbuff_cb *skcb; |
|
s32 err; |
|
u32 len; |
|
u8 data_offset; |
|
int ifidx; |
|
|
|
/* check delayedQ and suppressQ in one call using bitmap */ |
|
if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0) |
|
entry->traffic_pending_bmp &= ~NBITVAL(fifo); |
|
else |
|
entry->traffic_pending_bmp |= NBITVAL(fifo); |
|
|
|
entry->send_tim_signal = false; |
|
if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp) |
|
entry->send_tim_signal = true; |
|
if (send_immediately && entry->send_tim_signal && |
|
entry->state == BRCMF_FWS_STATE_CLOSE) { |
|
/* create a dummy packet and sent that. The traffic */ |
|
/* bitmap info will automatically be attached to that packet */ |
|
len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 + |
|
BRCMF_FWS_TYPE_SEQ_LEN + |
|
BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 + |
|
4 + fws->drvr->hdrlen; |
|
skb = brcmu_pkt_buf_get_skb(len); |
|
if (skb == NULL) |
|
return false; |
|
skb_pull(skb, len); |
|
skcb = brcmf_skbcb(skb); |
|
skcb->mac = entry; |
|
skcb->state = BRCMF_FWS_SKBSTATE_TIM; |
|
skcb->htod = 0; |
|
skcb->htod_seq = 0; |
|
data_offset = brcmf_fws_hdrpush(fws, skb); |
|
ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); |
|
brcmf_fws_unlock(fws); |
|
err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); |
|
brcmf_fws_lock(fws); |
|
if (err) |
|
brcmu_pkt_buf_free_skb(skb); |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
static void |
|
brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq, |
|
u8 if_id) |
|
{ |
|
struct brcmf_if *ifp = brcmf_get_ifp(fws->drvr, if_id); |
|
|
|
if (WARN_ON(!ifp)) |
|
return; |
|
|
|
if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && |
|
pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER) |
|
brcmf_txflowblock_if(ifp, |
|
BRCMF_NETIF_STOP_REASON_FWS_FC, false); |
|
if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && |
|
pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) { |
|
fws->stats.fws_flow_block++; |
|
brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true); |
|
} |
|
return; |
|
} |
|
|
|
static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi) |
|
{ |
|
brcmf_dbg(CTL, "rssi %d\n", rssi); |
|
return 0; |
|
} |
|
|
|
static |
|
int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry, *existing; |
|
u8 mac_handle; |
|
u8 ifidx; |
|
u8 *addr; |
|
|
|
mac_handle = *data++; |
|
ifidx = *data++; |
|
addr = data; |
|
|
|
entry = &fws->desc.nodes[mac_handle & 0x1F]; |
|
if (type == BRCMF_FWS_TYPE_MACDESC_DEL) { |
|
if (entry->occupied) { |
|
brcmf_dbg(TRACE, "deleting %s mac %pM\n", |
|
entry->name, addr); |
|
brcmf_fws_lock(fws); |
|
brcmf_fws_macdesc_cleanup(fws, entry, -1); |
|
brcmf_fws_macdesc_deinit(entry); |
|
brcmf_fws_unlock(fws); |
|
} else |
|
fws->stats.mac_update_failed++; |
|
return 0; |
|
} |
|
|
|
existing = brcmf_fws_macdesc_lookup(fws, addr); |
|
if (IS_ERR(existing)) { |
|
if (!entry->occupied) { |
|
brcmf_fws_lock(fws); |
|
entry->mac_handle = mac_handle; |
|
brcmf_fws_macdesc_init(entry, addr, ifidx); |
|
brcmf_fws_macdesc_set_name(fws, entry); |
|
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
|
BRCMF_FWS_PSQ_LEN); |
|
brcmf_fws_unlock(fws); |
|
brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr); |
|
} else { |
|
fws->stats.mac_update_failed++; |
|
} |
|
} else { |
|
if (entry != existing) { |
|
brcmf_dbg(TRACE, "copy mac %s\n", existing->name); |
|
brcmf_fws_lock(fws); |
|
memcpy(entry, existing, |
|
offsetof(struct brcmf_fws_mac_descriptor, psq)); |
|
entry->mac_handle = mac_handle; |
|
brcmf_fws_macdesc_deinit(existing); |
|
brcmf_fws_macdesc_set_name(fws, entry); |
|
brcmf_fws_unlock(fws); |
|
brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name, |
|
addr); |
|
} else { |
|
brcmf_dbg(TRACE, "use existing\n"); |
|
WARN_ON(entry->mac_handle != mac_handle); |
|
/* TODO: what should we do here: continue, reinit, .. */ |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws, |
|
u8 type, u8 *data) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry; |
|
u8 mac_handle; |
|
int ret; |
|
|
|
mac_handle = data[0]; |
|
entry = &fws->desc.nodes[mac_handle & 0x1F]; |
|
if (!entry->occupied) { |
|
fws->stats.mac_ps_update_failed++; |
|
return -ESRCH; |
|
} |
|
brcmf_fws_lock(fws); |
|
/* a state update should wipe old credits */ |
|
entry->requested_credit = 0; |
|
entry->requested_packet = 0; |
|
if (type == BRCMF_FWS_TYPE_MAC_OPEN) { |
|
entry->state = BRCMF_FWS_STATE_OPEN; |
|
ret = BRCMF_FWS_RET_OK_SCHEDULE; |
|
} else { |
|
entry->state = BRCMF_FWS_STATE_CLOSE; |
|
brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false); |
|
brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false); |
|
brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false); |
|
brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true); |
|
ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
} |
|
brcmf_fws_unlock(fws); |
|
return ret; |
|
} |
|
|
|
static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws, |
|
u8 type, u8 *data) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry; |
|
u8 ifidx; |
|
int ret; |
|
|
|
ifidx = data[0]; |
|
|
|
if (ifidx >= BRCMF_MAX_IFS) { |
|
ret = -ERANGE; |
|
goto fail; |
|
} |
|
|
|
entry = &fws->desc.iface[ifidx]; |
|
if (!entry->occupied) { |
|
ret = -ESRCH; |
|
goto fail; |
|
} |
|
|
|
brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type, |
|
entry->name); |
|
brcmf_fws_lock(fws); |
|
switch (type) { |
|
case BRCMF_FWS_TYPE_INTERFACE_OPEN: |
|
entry->state = BRCMF_FWS_STATE_OPEN; |
|
ret = BRCMF_FWS_RET_OK_SCHEDULE; |
|
break; |
|
case BRCMF_FWS_TYPE_INTERFACE_CLOSE: |
|
entry->state = BRCMF_FWS_STATE_CLOSE; |
|
ret = BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
brcmf_fws_unlock(fws); |
|
goto fail; |
|
} |
|
brcmf_fws_unlock(fws); |
|
return ret; |
|
|
|
fail: |
|
fws->stats.if_update_failed++; |
|
return ret; |
|
} |
|
|
|
static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type, |
|
u8 *data) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry; |
|
|
|
entry = &fws->desc.nodes[data[1] & 0x1F]; |
|
if (!entry->occupied) { |
|
if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) |
|
fws->stats.credit_request_failed++; |
|
else |
|
fws->stats.packet_request_failed++; |
|
return -ESRCH; |
|
} |
|
|
|
brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n", |
|
brcmf_fws_get_tlv_name(type), type, entry->name, |
|
data[0], data[2]); |
|
brcmf_fws_lock(fws); |
|
if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) |
|
entry->requested_credit = data[0]; |
|
else |
|
entry->requested_packet = data[0]; |
|
|
|
entry->ac_bitmap = data[2]; |
|
brcmf_fws_unlock(fws); |
|
return BRCMF_FWS_RET_OK_SCHEDULE; |
|
} |
|
|
|
static void |
|
brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry, |
|
struct sk_buff *skb) |
|
{ |
|
if (entry->requested_credit > 0) { |
|
entry->requested_credit--; |
|
brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); |
|
brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1); |
|
if (entry->state != BRCMF_FWS_STATE_CLOSE) |
|
brcmf_err("requested credit set while mac not closed!\n"); |
|
} else if (entry->requested_packet > 0) { |
|
entry->requested_packet--; |
|
brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); |
|
brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); |
|
if (entry->state != BRCMF_FWS_STATE_CLOSE) |
|
brcmf_err("requested packet set while mac not closed!\n"); |
|
} else { |
|
brcmf_skb_if_flags_set_field(skb, REQUESTED, 0); |
|
brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); |
|
} |
|
} |
|
|
|
static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; |
|
|
|
if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) && |
|
(entry->state == BRCMF_FWS_STATE_CLOSE)) |
|
entry->requested_credit++; |
|
} |
|
|
|
static void brcmf_fws_return_credits(struct brcmf_fws_info *fws, |
|
u8 fifo, u8 credits) |
|
{ |
|
int lender_ac; |
|
int *borrowed; |
|
int *fifo_credit; |
|
|
|
if (!credits) |
|
return; |
|
|
|
fws->fifo_credit_map |= 1 << fifo; |
|
|
|
if (fifo > BRCMF_FWS_FIFO_AC_BK && |
|
fifo <= BRCMF_FWS_FIFO_AC_VO) { |
|
for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0; |
|
lender_ac--) { |
|
borrowed = &fws->credits_borrowed[fifo][lender_ac]; |
|
if (*borrowed) { |
|
fws->fifo_credit_map |= (1 << lender_ac); |
|
fifo_credit = &fws->fifo_credit[lender_ac]; |
|
if (*borrowed >= credits) { |
|
*borrowed -= credits; |
|
*fifo_credit += credits; |
|
return; |
|
} else { |
|
credits -= *borrowed; |
|
*fifo_credit += *borrowed; |
|
*borrowed = 0; |
|
} |
|
} |
|
} |
|
} |
|
|
|
if (credits) { |
|
fws->fifo_credit[fifo] += credits; |
|
} |
|
|
|
if (fws->fifo_credit[fifo] > fws->init_fifo_credit[fifo]) |
|
fws->fifo_credit[fifo] = fws->init_fifo_credit[fifo]; |
|
|
|
} |
|
|
|
static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws) |
|
{ |
|
/* only schedule dequeue when there are credits for delayed traffic */ |
|
if ((fws->fifo_credit_map & fws->fifo_delay_map) || |
|
(!brcmf_fws_fc_active(fws) && fws->fifo_delay_map)) |
|
queue_work(fws->fws_wq, &fws->fws_dequeue_work); |
|
} |
|
|
|
static int brcmf_fws_enq(struct brcmf_fws_info *fws, |
|
enum brcmf_fws_skb_state state, int fifo, |
|
struct sk_buff *p) |
|
{ |
|
struct brcmf_pub *drvr = fws->drvr; |
|
int prec = 2 * fifo; |
|
u32 *qfull_stat = &fws->stats.delayq_full_error; |
|
struct brcmf_fws_mac_descriptor *entry; |
|
struct pktq *pq; |
|
struct sk_buff_head *queue; |
|
struct sk_buff *p_head; |
|
struct sk_buff *p_tail; |
|
u32 fr_new; |
|
u32 fr_compare; |
|
|
|
entry = brcmf_skbcb(p)->mac; |
|
if (entry == NULL) { |
|
bphy_err(drvr, "no mac descriptor found for skb %p\n", p); |
|
return -ENOENT; |
|
} |
|
|
|
brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p); |
|
if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) { |
|
prec += 1; |
|
qfull_stat = &fws->stats.supprq_full_error; |
|
|
|
/* Fix out of order delivery of frames. Dont assume frame */ |
|
/* can be inserted at the end, but look for correct position */ |
|
pq = &entry->psq; |
|
if (pktq_full(pq) || pktq_pfull(pq, prec)) { |
|
*qfull_stat += 1; |
|
return -ENFILE; |
|
} |
|
queue = &pq->q[prec].skblist; |
|
|
|
p_head = skb_peek(queue); |
|
p_tail = skb_peek_tail(queue); |
|
fr_new = brcmf_skb_htod_tag_get_field(p, FREERUN); |
|
|
|
while (p_head != p_tail) { |
|
fr_compare = brcmf_skb_htod_tag_get_field(p_tail, |
|
FREERUN); |
|
/* be sure to handle wrap of 256 */ |
|
if (((fr_new > fr_compare) && |
|
((fr_new - fr_compare) < 128)) || |
|
((fr_new < fr_compare) && |
|
((fr_compare - fr_new) > 128))) |
|
break; |
|
p_tail = skb_queue_prev(queue, p_tail); |
|
} |
|
/* Position found. Determine what to do */ |
|
if (p_tail == NULL) { |
|
/* empty list */ |
|
__skb_queue_tail(queue, p); |
|
} else { |
|
fr_compare = brcmf_skb_htod_tag_get_field(p_tail, |
|
FREERUN); |
|
if (((fr_new > fr_compare) && |
|
((fr_new - fr_compare) < 128)) || |
|
((fr_new < fr_compare) && |
|
((fr_compare - fr_new) > 128))) { |
|
/* After tail */ |
|
__skb_queue_after(queue, p_tail, p); |
|
} else { |
|
/* Before tail */ |
|
__skb_insert(p, p_tail->prev, p_tail, queue); |
|
} |
|
} |
|
|
|
/* Complete the counters and statistics */ |
|
pq->len++; |
|
if (pq->hi_prec < prec) |
|
pq->hi_prec = (u8) prec; |
|
} else if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) { |
|
*qfull_stat += 1; |
|
return -ENFILE; |
|
} |
|
|
|
/* increment total enqueued packet count */ |
|
fws->fifo_delay_map |= 1 << fifo; |
|
fws->fifo_enqpkt[fifo]++; |
|
|
|
/* update the sk_buff state */ |
|
brcmf_skbcb(p)->state = state; |
|
|
|
/* |
|
* A packet has been pushed so update traffic |
|
* availability bitmap, if applicable |
|
*/ |
|
brcmf_fws_tim_update(fws, entry, fifo, true); |
|
brcmf_fws_flow_control_check(fws, &entry->psq, |
|
brcmf_skb_if_flags_get_field(p, INDEX)); |
|
return 0; |
|
} |
|
|
|
static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo) |
|
{ |
|
struct brcmf_fws_mac_descriptor *table; |
|
struct brcmf_fws_mac_descriptor *entry; |
|
struct sk_buff *p; |
|
int num_nodes; |
|
int node_pos; |
|
int prec_out; |
|
int pmsk; |
|
int i; |
|
|
|
table = (struct brcmf_fws_mac_descriptor *)&fws->desc; |
|
num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor); |
|
node_pos = fws->deq_node_pos[fifo]; |
|
|
|
for (i = 0; i < num_nodes; i++) { |
|
entry = &table[(node_pos + i) % num_nodes]; |
|
if (!entry->occupied || |
|
brcmf_fws_macdesc_closed(fws, entry, fifo)) |
|
continue; |
|
|
|
if (entry->suppressed) |
|
pmsk = 2; |
|
else |
|
pmsk = 3; |
|
p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out); |
|
if (p == NULL) { |
|
if (entry->suppressed) { |
|
if (entry->suppr_transit_count) |
|
continue; |
|
entry->suppressed = false; |
|
p = brcmu_pktq_mdeq(&entry->psq, |
|
1 << (fifo * 2), &prec_out); |
|
} |
|
} |
|
if (p == NULL) |
|
continue; |
|
|
|
brcmf_fws_macdesc_use_req_credit(entry, p); |
|
|
|
/* move dequeue position to ensure fair round-robin */ |
|
fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes; |
|
brcmf_fws_flow_control_check(fws, &entry->psq, |
|
brcmf_skb_if_flags_get_field(p, |
|
INDEX) |
|
); |
|
/* |
|
* A packet has been picked up, update traffic |
|
* availability bitmap, if applicable |
|
*/ |
|
brcmf_fws_tim_update(fws, entry, fifo, false); |
|
|
|
/* |
|
* decrement total enqueued fifo packets and |
|
* clear delay bitmap if done. |
|
*/ |
|
fws->fifo_enqpkt[fifo]--; |
|
if (fws->fifo_enqpkt[fifo] == 0) |
|
fws->fifo_delay_map &= ~(1 << fifo); |
|
goto done; |
|
} |
|
p = NULL; |
|
done: |
|
brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p); |
|
return p; |
|
} |
|
|
|
static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo, |
|
struct sk_buff *skb, |
|
u32 genbit, u16 seq) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; |
|
u32 hslot; |
|
int ret; |
|
|
|
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
|
|
|
/* this packet was suppressed */ |
|
if (!entry->suppressed) { |
|
entry->suppressed = true; |
|
entry->suppr_transit_count = entry->transit_count; |
|
brcmf_dbg(DATA, "suppress %s: transit %d\n", |
|
entry->name, entry->transit_count); |
|
} |
|
|
|
entry->generation = genbit; |
|
|
|
brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit); |
|
brcmf_skbcb(skb)->htod_seq = seq; |
|
if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) { |
|
brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1); |
|
brcmf_skb_htod_seq_set_field(skb, FROMFW, 0); |
|
} else { |
|
brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0); |
|
} |
|
ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb); |
|
|
|
if (ret != 0) { |
|
/* suppress q is full drop this packet */ |
|
brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true); |
|
} else { |
|
/* Mark suppressed to avoid a double free during wlfc cleanup */ |
|
brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int |
|
brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot, |
|
u32 genbit, u16 seq, u8 compcnt) |
|
{ |
|
struct brcmf_pub *drvr = fws->drvr; |
|
u32 fifo; |
|
u8 cnt = 0; |
|
int ret; |
|
bool remove_from_hanger = true; |
|
struct sk_buff *skb; |
|
struct brcmf_skbuff_cb *skcb; |
|
struct brcmf_fws_mac_descriptor *entry = NULL; |
|
struct brcmf_if *ifp; |
|
|
|
brcmf_dbg(DATA, "flags %d\n", flags); |
|
|
|
if (flags == BRCMF_FWS_TXSTATUS_DISCARD) |
|
fws->stats.txs_discard += compcnt; |
|
else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) { |
|
fws->stats.txs_supp_core += compcnt; |
|
remove_from_hanger = false; |
|
} else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) { |
|
fws->stats.txs_supp_ps += compcnt; |
|
remove_from_hanger = false; |
|
} else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED) |
|
fws->stats.txs_tossed += compcnt; |
|
else if (flags == BRCMF_FWS_TXSTATUS_FW_DISCARD_NOACK) |
|
fws->stats.txs_discard += compcnt; |
|
else if (flags == BRCMF_FWS_TXSTATUS_FW_SUPPRESS_ACKED) |
|
fws->stats.txs_discard += compcnt; |
|
else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED) |
|
fws->stats.txs_host_tossed += compcnt; |
|
else |
|
bphy_err(drvr, "unexpected txstatus\n"); |
|
|
|
while (cnt < compcnt) { |
|
ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, |
|
remove_from_hanger); |
|
if (ret != 0) { |
|
bphy_err(drvr, "no packet in hanger slot: hslot=%d\n", |
|
hslot); |
|
goto cont; |
|
} |
|
|
|
skcb = brcmf_skbcb(skb); |
|
entry = skcb->mac; |
|
if (WARN_ON(!entry)) { |
|
brcmu_pkt_buf_free_skb(skb); |
|
goto cont; |
|
} |
|
entry->transit_count--; |
|
if (entry->suppressed && entry->suppr_transit_count) |
|
entry->suppr_transit_count--; |
|
|
|
brcmf_dbg(DATA, "%s flags %d htod %X seq %X\n", entry->name, |
|
flags, skcb->htod, seq); |
|
|
|
/* pick up the implicit credit from this packet */ |
|
fifo = brcmf_skb_htod_tag_get_field(skb, FIFO); |
|
if (fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT || |
|
(brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) || |
|
flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED) { |
|
brcmf_fws_return_credits(fws, fifo, 1); |
|
brcmf_fws_schedule_deq(fws); |
|
} |
|
brcmf_fws_macdesc_return_req_credit(skb); |
|
|
|
ret = brcmf_proto_hdrpull(fws->drvr, false, skb, &ifp); |
|
if (ret) { |
|
brcmu_pkt_buf_free_skb(skb); |
|
goto cont; |
|
} |
|
if (!remove_from_hanger) |
|
ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, |
|
genbit, seq); |
|
if (remove_from_hanger || ret) |
|
brcmf_txfinalize(ifp, skb, true); |
|
|
|
cont: |
|
hslot = (hslot + 1) & (BRCMF_FWS_TXSTAT_HSLOT_MASK >> |
|
BRCMF_FWS_TXSTAT_HSLOT_SHIFT); |
|
if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) |
|
seq = (seq + 1) & BRCMF_SKB_HTOD_SEQ_NR_MASK; |
|
|
|
cnt++; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws, |
|
u8 *data) |
|
{ |
|
int i; |
|
|
|
if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) { |
|
brcmf_dbg(INFO, "ignored\n"); |
|
return BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
} |
|
|
|
brcmf_dbg(DATA, "enter: data %pM\n", data); |
|
brcmf_fws_lock(fws); |
|
for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++) |
|
brcmf_fws_return_credits(fws, i, data[i]); |
|
|
|
brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map, |
|
fws->fifo_delay_map); |
|
brcmf_fws_unlock(fws); |
|
return BRCMF_FWS_RET_OK_SCHEDULE; |
|
} |
|
|
|
static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 type, |
|
u8 *data) |
|
{ |
|
__le32 status_le; |
|
__le16 seq_le; |
|
u32 status; |
|
u32 hslot; |
|
u32 genbit; |
|
u8 flags; |
|
u16 seq; |
|
u8 compcnt; |
|
u8 compcnt_offset = BRCMF_FWS_TYPE_TXSTATUS_LEN; |
|
|
|
memcpy(&status_le, data, sizeof(status_le)); |
|
status = le32_to_cpu(status_le); |
|
flags = brcmf_txstatus_get_field(status, FLAGS); |
|
hslot = brcmf_txstatus_get_field(status, HSLOT); |
|
genbit = brcmf_txstatus_get_field(status, GENERATION); |
|
if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { |
|
memcpy(&seq_le, &data[BRCMF_FWS_TYPE_TXSTATUS_LEN], |
|
sizeof(seq_le)); |
|
seq = le16_to_cpu(seq_le); |
|
compcnt_offset += BRCMF_FWS_TYPE_SEQ_LEN; |
|
} else { |
|
seq = 0; |
|
} |
|
|
|
if (type == BRCMF_FWS_TYPE_COMP_TXSTATUS) |
|
compcnt = data[compcnt_offset]; |
|
else |
|
compcnt = 1; |
|
fws->stats.txs_indicate += compcnt; |
|
|
|
brcmf_fws_lock(fws); |
|
brcmf_fws_txs_process(fws, flags, hslot, genbit, seq, compcnt); |
|
brcmf_fws_unlock(fws); |
|
return BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
} |
|
|
|
static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data) |
|
{ |
|
__le32 timestamp; |
|
|
|
memcpy(×tamp, &data[2], sizeof(timestamp)); |
|
brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1], |
|
le32_to_cpu(timestamp)); |
|
return 0; |
|
} |
|
|
|
static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_pub *drvr = ifp->drvr; |
|
struct brcmf_fws_info *fws = drvr_to_fws(drvr); |
|
int i; |
|
u8 *credits = data; |
|
|
|
if (e->datalen < BRCMF_FWS_FIFO_COUNT) { |
|
bphy_err(drvr, "event payload too small (%d)\n", e->datalen); |
|
return -EINVAL; |
|
} |
|
|
|
fws->creditmap_received = true; |
|
|
|
brcmf_dbg(TRACE, "enter: credits %pM\n", credits); |
|
brcmf_fws_lock(fws); |
|
for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) { |
|
fws->fifo_credit[i] += credits[i] - fws->init_fifo_credit[i]; |
|
fws->init_fifo_credit[i] = credits[i]; |
|
if (fws->fifo_credit[i] > 0) |
|
fws->fifo_credit_map |= 1 << i; |
|
else |
|
fws->fifo_credit_map &= ~(1 << i); |
|
WARN_ONCE(fws->fifo_credit[i] < 0, |
|
"fifo_credit[%d] is negative(%d)\n", i, |
|
fws->fifo_credit[i]); |
|
} |
|
brcmf_fws_schedule_deq(fws); |
|
brcmf_fws_unlock(fws); |
|
return 0; |
|
} |
|
|
|
static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr); |
|
|
|
if (fws) { |
|
brcmf_fws_lock(fws); |
|
fws->bcmc_credit_check = true; |
|
brcmf_fws_unlock(fws); |
|
} |
|
return 0; |
|
} |
|
|
|
static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi, |
|
u8 start, u8 end, |
|
struct sk_buff_head *skb_list) |
|
{ |
|
/* initialize return list */ |
|
__skb_queue_head_init(skb_list); |
|
|
|
if (rfi->pend_pkts == 0) { |
|
brcmf_dbg(INFO, "no packets in reorder queue\n"); |
|
return; |
|
} |
|
|
|
do { |
|
if (rfi->pktslots[start]) { |
|
__skb_queue_tail(skb_list, rfi->pktslots[start]); |
|
rfi->pktslots[start] = NULL; |
|
} |
|
start++; |
|
if (start > rfi->max_idx) |
|
start = 0; |
|
} while (start != end); |
|
rfi->pend_pkts -= skb_queue_len(skb_list); |
|
} |
|
|
|
void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt, bool inirq) |
|
{ |
|
struct brcmf_pub *drvr = ifp->drvr; |
|
u8 *reorder_data; |
|
u8 flow_id, max_idx, cur_idx, exp_idx, end_idx; |
|
struct brcmf_ampdu_rx_reorder *rfi; |
|
struct sk_buff_head reorder_list; |
|
struct sk_buff *pnext; |
|
u8 flags; |
|
u32 buf_size; |
|
|
|
reorder_data = ((struct brcmf_skb_reorder_data *)pkt->cb)->reorder; |
|
flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET]; |
|
flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET]; |
|
|
|
/* validate flags and flow id */ |
|
if (flags == 0xFF) { |
|
bphy_err(drvr, "invalid flags...so ignore this packet\n"); |
|
brcmf_netif_rx(ifp, pkt, inirq); |
|
return; |
|
} |
|
|
|
rfi = ifp->drvr->reorder_flows[flow_id]; |
|
if (flags & BRCMF_RXREORDER_DEL_FLOW) { |
|
brcmf_dbg(INFO, "flow-%d: delete\n", |
|
flow_id); |
|
|
|
if (rfi == NULL) { |
|
brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n", |
|
flow_id); |
|
brcmf_netif_rx(ifp, pkt, inirq); |
|
return; |
|
} |
|
|
|
brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx, |
|
&reorder_list); |
|
/* add the last packet */ |
|
__skb_queue_tail(&reorder_list, pkt); |
|
kfree(rfi); |
|
ifp->drvr->reorder_flows[flow_id] = NULL; |
|
goto netif_rx; |
|
} |
|
/* from here on we need a flow reorder instance */ |
|
if (rfi == NULL) { |
|
buf_size = sizeof(*rfi); |
|
max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; |
|
|
|
buf_size += (max_idx + 1) * sizeof(pkt); |
|
|
|
/* allocate space for flow reorder info */ |
|
brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n", |
|
flow_id, max_idx); |
|
rfi = kzalloc(buf_size, GFP_ATOMIC); |
|
if (rfi == NULL) { |
|
bphy_err(drvr, "failed to alloc buffer\n"); |
|
brcmf_netif_rx(ifp, pkt, inirq); |
|
return; |
|
} |
|
|
|
ifp->drvr->reorder_flows[flow_id] = rfi; |
|
rfi->pktslots = (struct sk_buff **)(rfi + 1); |
|
rfi->max_idx = max_idx; |
|
} |
|
if (flags & BRCMF_RXREORDER_NEW_HOLE) { |
|
if (rfi->pend_pkts) { |
|
brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, |
|
rfi->exp_idx, |
|
&reorder_list); |
|
WARN_ON(rfi->pend_pkts); |
|
} else { |
|
__skb_queue_head_init(&reorder_list); |
|
} |
|
rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; |
|
rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; |
|
rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; |
|
rfi->pktslots[rfi->cur_idx] = pkt; |
|
rfi->pend_pkts++; |
|
brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n", |
|
flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts); |
|
} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) { |
|
cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; |
|
exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; |
|
|
|
if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) { |
|
/* still in the current hole */ |
|
/* enqueue the current on the buffer chain */ |
|
if (rfi->pktslots[cur_idx] != NULL) { |
|
brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n"); |
|
brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); |
|
rfi->pktslots[cur_idx] = NULL; |
|
} |
|
rfi->pktslots[cur_idx] = pkt; |
|
rfi->pend_pkts++; |
|
rfi->cur_idx = cur_idx; |
|
brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n", |
|
flow_id, cur_idx, exp_idx, rfi->pend_pkts); |
|
|
|
/* can return now as there is no reorder |
|
* list to process. |
|
*/ |
|
return; |
|
} |
|
if (rfi->exp_idx == cur_idx) { |
|
if (rfi->pktslots[cur_idx] != NULL) { |
|
brcmf_dbg(INFO, "error buffer pending..free it\n"); |
|
brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); |
|
rfi->pktslots[cur_idx] = NULL; |
|
} |
|
rfi->pktslots[cur_idx] = pkt; |
|
rfi->pend_pkts++; |
|
|
|
/* got the expected one. flush from current to expected |
|
* and update expected |
|
*/ |
|
brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n", |
|
flow_id, cur_idx, exp_idx, rfi->pend_pkts); |
|
|
|
rfi->cur_idx = cur_idx; |
|
rfi->exp_idx = exp_idx; |
|
|
|
brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx, |
|
&reorder_list); |
|
brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n", |
|
flow_id, skb_queue_len(&reorder_list), |
|
rfi->pend_pkts); |
|
} else { |
|
u8 end_idx; |
|
|
|
brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n", |
|
flow_id, flags, rfi->cur_idx, rfi->exp_idx, |
|
cur_idx, exp_idx); |
|
if (flags & BRCMF_RXREORDER_FLUSH_ALL) |
|
end_idx = rfi->exp_idx; |
|
else |
|
end_idx = exp_idx; |
|
|
|
/* flush pkts first */ |
|
brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, |
|
&reorder_list); |
|
|
|
if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) { |
|
__skb_queue_tail(&reorder_list, pkt); |
|
} else { |
|
rfi->pktslots[cur_idx] = pkt; |
|
rfi->pend_pkts++; |
|
} |
|
rfi->exp_idx = exp_idx; |
|
rfi->cur_idx = cur_idx; |
|
} |
|
} else { |
|
/* explicity window move updating the expected index */ |
|
exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; |
|
|
|
brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n", |
|
flow_id, flags, rfi->exp_idx, exp_idx); |
|
if (flags & BRCMF_RXREORDER_FLUSH_ALL) |
|
end_idx = rfi->exp_idx; |
|
else |
|
end_idx = exp_idx; |
|
|
|
brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, |
|
&reorder_list); |
|
__skb_queue_tail(&reorder_list, pkt); |
|
/* set the new expected idx */ |
|
rfi->exp_idx = exp_idx; |
|
} |
|
netif_rx: |
|
skb_queue_walk_safe(&reorder_list, pkt, pnext) { |
|
__skb_unlink(pkt, &reorder_list); |
|
brcmf_netif_rx(ifp, pkt, inirq); |
|
} |
|
} |
|
|
|
void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb) |
|
{ |
|
struct brcmf_skb_reorder_data *rd; |
|
struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr); |
|
u8 *signal_data; |
|
s16 data_len; |
|
u8 type; |
|
u8 len; |
|
u8 *data; |
|
s32 status; |
|
s32 err; |
|
|
|
brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n", |
|
ifp->ifidx, skb->len, siglen); |
|
|
|
WARN_ON(siglen > skb->len); |
|
|
|
if (siglen > skb->len) |
|
siglen = skb->len; |
|
|
|
if (!siglen) |
|
return; |
|
/* if flow control disabled, skip to packet data and leave */ |
|
if ((!fws) || (!fws->fw_signals)) { |
|
skb_pull(skb, siglen); |
|
return; |
|
} |
|
|
|
fws->stats.header_pulls++; |
|
data_len = siglen; |
|
signal_data = skb->data; |
|
|
|
status = BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
while (data_len > 0) { |
|
/* extract tlv info */ |
|
type = signal_data[0]; |
|
|
|
/* FILLER type is actually not a TLV, but |
|
* a single byte that can be skipped. |
|
*/ |
|
if (type == BRCMF_FWS_TYPE_FILLER) { |
|
signal_data += 1; |
|
data_len -= 1; |
|
continue; |
|
} |
|
len = signal_data[1]; |
|
data = signal_data + 2; |
|
|
|
brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n", |
|
brcmf_fws_get_tlv_name(type), type, len, |
|
brcmf_fws_get_tlv_len(fws, type)); |
|
|
|
/* abort parsing when length invalid */ |
|
if (data_len < len + 2) |
|
break; |
|
|
|
if (len < brcmf_fws_get_tlv_len(fws, type)) |
|
break; |
|
|
|
err = BRCMF_FWS_RET_OK_NOSCHEDULE; |
|
switch (type) { |
|
case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS: |
|
rd = (struct brcmf_skb_reorder_data *)skb->cb; |
|
rd->reorder = data; |
|
break; |
|
case BRCMF_FWS_TYPE_MACDESC_ADD: |
|
case BRCMF_FWS_TYPE_MACDESC_DEL: |
|
brcmf_fws_macdesc_indicate(fws, type, data); |
|
break; |
|
case BRCMF_FWS_TYPE_MAC_OPEN: |
|
case BRCMF_FWS_TYPE_MAC_CLOSE: |
|
err = brcmf_fws_macdesc_state_indicate(fws, type, data); |
|
break; |
|
case BRCMF_FWS_TYPE_INTERFACE_OPEN: |
|
case BRCMF_FWS_TYPE_INTERFACE_CLOSE: |
|
err = brcmf_fws_interface_state_indicate(fws, type, |
|
data); |
|
break; |
|
case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT: |
|
case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET: |
|
err = brcmf_fws_request_indicate(fws, type, data); |
|
break; |
|
case BRCMF_FWS_TYPE_TXSTATUS: |
|
case BRCMF_FWS_TYPE_COMP_TXSTATUS: |
|
brcmf_fws_txstatus_indicate(fws, type, data); |
|
break; |
|
case BRCMF_FWS_TYPE_FIFO_CREDITBACK: |
|
err = brcmf_fws_fifocreditback_indicate(fws, data); |
|
break; |
|
case BRCMF_FWS_TYPE_RSSI: |
|
brcmf_fws_rssi_indicate(fws, *data); |
|
break; |
|
case BRCMF_FWS_TYPE_TRANS_ID: |
|
brcmf_fws_dbg_seqnum_check(fws, data); |
|
break; |
|
case BRCMF_FWS_TYPE_PKTTAG: |
|
case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP: |
|
default: |
|
fws->stats.tlv_invalid_type++; |
|
break; |
|
} |
|
if (err == BRCMF_FWS_RET_OK_SCHEDULE) |
|
status = BRCMF_FWS_RET_OK_SCHEDULE; |
|
signal_data += len + 2; |
|
data_len -= len + 2; |
|
} |
|
|
|
if (data_len != 0) |
|
fws->stats.tlv_parse_failed++; |
|
|
|
if (status == BRCMF_FWS_RET_OK_SCHEDULE) |
|
brcmf_fws_schedule_deq(fws); |
|
|
|
/* signalling processing result does |
|
* not affect the actual ethernet packet. |
|
*/ |
|
skb_pull(skb, siglen); |
|
|
|
/* this may be a signal-only packet |
|
*/ |
|
if (skb->len == 0) |
|
fws->stats.header_only_pkt++; |
|
} |
|
|
|
static u8 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; |
|
u8 flags; |
|
|
|
if (skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED) |
|
brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation); |
|
flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST; |
|
if (brcmf_skb_if_flags_get_field(p, REQUESTED)) { |
|
/* |
|
* 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); |
|
return brcmf_fws_hdrpush(fws, p); |
|
} |
|
|
|
static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws, |
|
struct sk_buff *skb, int fifo) |
|
{ |
|
struct brcmf_pub *drvr = fws->drvr; |
|
struct brcmf_fws_mac_descriptor *entry; |
|
struct sk_buff *pktout; |
|
int qidx, hslot; |
|
int rc = 0; |
|
|
|
entry = brcmf_skbcb(skb)->mac; |
|
if (entry->occupied) { |
|
qidx = 2 * fifo; |
|
if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED) |
|
qidx++; |
|
|
|
pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb); |
|
if (pktout == NULL) { |
|
bphy_err(drvr, "%s queue %d full\n", entry->name, qidx); |
|
rc = -ENOSPC; |
|
} |
|
} else { |
|
bphy_err(drvr, "%s entry removed\n", entry->name); |
|
rc = -ENOENT; |
|
} |
|
|
|
if (rc) { |
|
fws->stats.rollback_failed++; |
|
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
|
brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, |
|
hslot, 0, 0, 1); |
|
} else { |
|
fws->stats.rollback_success++; |
|
brcmf_fws_return_credits(fws, fifo, 1); |
|
brcmf_fws_macdesc_return_req_credit(skb); |
|
} |
|
} |
|
|
|
static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws, |
|
int highest_lender_ac, int borrower_ac, |
|
bool borrow_all) |
|
{ |
|
int lender_ac, borrow_limit = 0; |
|
|
|
for (lender_ac = 0; lender_ac <= highest_lender_ac; lender_ac++) { |
|
|
|
if (!borrow_all) |
|
borrow_limit = |
|
fws->init_fifo_credit[lender_ac] / BRCMF_BORROW_RATIO; |
|
else |
|
borrow_limit = 0; |
|
|
|
if (fws->fifo_credit[lender_ac] > borrow_limit) { |
|
fws->credits_borrowed[borrower_ac][lender_ac]++; |
|
fws->fifo_credit[lender_ac]--; |
|
if (fws->fifo_credit[lender_ac] == 0) |
|
fws->fifo_credit_map &= ~(1 << lender_ac); |
|
fws->fifo_credit_map |= (1 << borrower_ac); |
|
brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac); |
|
return 0; |
|
} |
|
} |
|
fws->fifo_credit_map &= ~(1 << borrower_ac); |
|
return -ENAVAIL; |
|
} |
|
|
|
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; |
|
int rc; |
|
u8 ifidx; |
|
u8 data_offset; |
|
|
|
entry = skcb->mac; |
|
if (IS_ERR(entry)) |
|
return PTR_ERR(entry); |
|
|
|
data_offset = brcmf_fws_precommit_skb(fws, fifo, skb); |
|
entry->transit_count++; |
|
if (entry->suppressed) |
|
entry->suppr_transit_count++; |
|
ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); |
|
brcmf_fws_unlock(fws); |
|
rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); |
|
brcmf_fws_lock(fws); |
|
brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name, |
|
skcb->if_flags, skcb->htod, rc); |
|
if (rc < 0) { |
|
entry->transit_count--; |
|
if (entry->suppressed) |
|
entry->suppr_transit_count--; |
|
(void)brcmf_proto_hdrpull(fws->drvr, false, skb, NULL); |
|
goto rollback; |
|
} |
|
|
|
fws->stats.pkt2bus++; |
|
fws->stats.send_pkts[fifo]++; |
|
if (brcmf_skb_if_flags_get_field(skb, REQUESTED)) |
|
fws->stats.requested_sent[fifo]++; |
|
|
|
return rc; |
|
|
|
rollback: |
|
brcmf_fws_rollback_toq(fws, skb, fifo); |
|
return rc; |
|
} |
|
|
|
static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p, |
|
int fifo) |
|
{ |
|
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); |
|
int rc, hslot; |
|
|
|
skcb->htod = 0; |
|
skcb->htod_seq = 0; |
|
hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger); |
|
brcmf_skb_htod_tag_set_field(p, HSLOT, hslot); |
|
brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]); |
|
brcmf_skb_htod_tag_set_field(p, FIFO, fifo); |
|
rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot); |
|
if (!rc) |
|
skcb->mac->seq[fifo]++; |
|
else |
|
fws->stats.generic_error++; |
|
return rc; |
|
} |
|
|
|
int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb) |
|
{ |
|
struct brcmf_pub *drvr = ifp->drvr; |
|
struct brcmf_fws_info *fws = drvr_to_fws(drvr); |
|
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); |
|
struct ethhdr *eh = (struct ethhdr *)(skb->data); |
|
int fifo = BRCMF_FWS_FIFO_BCMC; |
|
bool multicast = is_multicast_ether_addr(eh->h_dest); |
|
int rc = 0; |
|
|
|
brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto)); |
|
|
|
/* set control buffer information */ |
|
skcb->if_flags = 0; |
|
skcb->state = BRCMF_FWS_SKBSTATE_NEW; |
|
brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx); |
|
|
|
/* mapping from 802.1d priority to firmware fifo index */ |
|
if (!multicast) |
|
fifo = brcmf_map_prio_to_aci(drvr->config, skb->priority); |
|
|
|
brcmf_fws_lock(fws); |
|
if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC) |
|
fws->borrow_defer_timestamp = jiffies + |
|
BRCMF_FWS_BORROW_DEFER_PERIOD; |
|
|
|
skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest); |
|
brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name, |
|
eh->h_dest, multicast, fifo); |
|
if (!brcmf_fws_assign_htod(fws, skb, fifo)) { |
|
brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb); |
|
brcmf_fws_schedule_deq(fws); |
|
} else { |
|
bphy_err(drvr, "no hanger slot available\n"); |
|
rc = -ENOMEM; |
|
} |
|
brcmf_fws_unlock(fws); |
|
|
|
return rc; |
|
} |
|
|
|
void brcmf_fws_reset_interface(struct brcmf_if *ifp) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; |
|
|
|
brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx); |
|
if (!entry) |
|
return; |
|
|
|
brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
|
} |
|
|
|
void brcmf_fws_add_interface(struct brcmf_if *ifp) |
|
{ |
|
struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr); |
|
struct brcmf_fws_mac_descriptor *entry; |
|
|
|
if (!ifp->ndev || !brcmf_fws_queue_skbs(fws)) |
|
return; |
|
|
|
entry = &fws->desc.iface[ifp->ifidx]; |
|
ifp->fws_desc = entry; |
|
brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); |
|
brcmf_fws_macdesc_set_name(fws, entry); |
|
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, |
|
BRCMF_FWS_PSQ_LEN); |
|
brcmf_dbg(TRACE, "added %s\n", entry->name); |
|
} |
|
|
|
void brcmf_fws_del_interface(struct brcmf_if *ifp) |
|
{ |
|
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; |
|
struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr); |
|
|
|
if (!entry) |
|
return; |
|
|
|
brcmf_fws_lock(fws); |
|
ifp->fws_desc = NULL; |
|
brcmf_dbg(TRACE, "deleting %s\n", entry->name); |
|
brcmf_fws_macdesc_cleanup(fws, &fws->desc.iface[ifp->ifidx], |
|
ifp->ifidx); |
|
brcmf_fws_macdesc_deinit(entry); |
|
brcmf_fws_cleanup(fws, ifp->ifidx); |
|
brcmf_fws_unlock(fws); |
|
} |
|
|
|
static void brcmf_fws_dequeue_worker(struct work_struct *worker) |
|
{ |
|
struct brcmf_fws_info *fws; |
|
struct brcmf_pub *drvr; |
|
struct sk_buff *skb; |
|
int fifo; |
|
u32 hslot; |
|
u32 ifidx; |
|
int ret; |
|
|
|
fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work); |
|
drvr = fws->drvr; |
|
|
|
brcmf_fws_lock(fws); |
|
for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked; |
|
fifo--) { |
|
if (!brcmf_fws_fc_active(fws)) { |
|
while ((skb = brcmf_fws_deq(fws, fifo)) != NULL) { |
|
hslot = brcmf_skb_htod_tag_get_field(skb, |
|
HSLOT); |
|
brcmf_fws_hanger_poppkt(&fws->hanger, hslot, |
|
&skb, true); |
|
ifidx = brcmf_skb_if_flags_get_field(skb, |
|
INDEX); |
|
/* Use proto layer to send data frame */ |
|
brcmf_fws_unlock(fws); |
|
ret = brcmf_proto_txdata(drvr, ifidx, 0, skb); |
|
brcmf_fws_lock(fws); |
|
if (ret < 0) |
|
brcmf_txfinalize(brcmf_get_ifp(drvr, |
|
ifidx), |
|
skb, false); |
|
if (fws->bus_flow_blocked) |
|
break; |
|
} |
|
continue; |
|
} |
|
|
|
while ((fws->fifo_credit[fifo]) || |
|
((!fws->bcmc_credit_check) && |
|
(fifo == BRCMF_FWS_FIFO_BCMC))) { |
|
skb = brcmf_fws_deq(fws, fifo); |
|
if (!skb) |
|
break; |
|
fws->fifo_credit[fifo]--; |
|
if (brcmf_fws_commit_skb(fws, fifo, skb)) |
|
break; |
|
if (fws->bus_flow_blocked) |
|
break; |
|
} |
|
|
|
if (fifo >= BRCMF_FWS_FIFO_AC_BE && |
|
fifo <= BRCMF_FWS_FIFO_AC_VO && |
|
fws->fifo_credit[fifo] == 0 && |
|
!fws->bus_flow_blocked) { |
|
while (brcmf_fws_borrow_credit(fws, |
|
fifo - 1, fifo, |
|
true) == 0) { |
|
skb = brcmf_fws_deq(fws, fifo); |
|
if (!skb) { |
|
brcmf_fws_return_credits(fws, fifo, 1); |
|
break; |
|
} |
|
if (brcmf_fws_commit_skb(fws, fifo, skb)) |
|
break; |
|
if (fws->bus_flow_blocked) |
|
break; |
|
} |
|
} |
|
} |
|
brcmf_fws_unlock(fws); |
|
} |
|
|
|
#ifdef DEBUG |
|
static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data) |
|
{ |
|
struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); |
|
struct brcmf_fws_stats *fwstats = &(drvr_to_fws(bus_if->drvr)->stats); |
|
|
|
seq_printf(seq, |
|
"header_pulls: %u\n" |
|
"header_only_pkt: %u\n" |
|
"tlv_parse_failed: %u\n" |
|
"tlv_invalid_type: %u\n" |
|
"mac_update_fails: %u\n" |
|
"ps_update_fails: %u\n" |
|
"if_update_fails: %u\n" |
|
"pkt2bus: %u\n" |
|
"generic_error: %u\n" |
|
"rollback_success: %u\n" |
|
"rollback_failed: %u\n" |
|
"delayq_full: %u\n" |
|
"supprq_full: %u\n" |
|
"txs_indicate: %u\n" |
|
"txs_discard: %u\n" |
|
"txs_suppr_core: %u\n" |
|
"txs_suppr_ps: %u\n" |
|
"txs_tossed: %u\n" |
|
"txs_host_tossed: %u\n" |
|
"bus_flow_block: %u\n" |
|
"fws_flow_block: %u\n" |
|
"send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n" |
|
"requested_sent: 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_ps_update_failed, |
|
fwstats->if_update_failed, |
|
fwstats->pkt2bus, |
|
fwstats->generic_error, |
|
fwstats->rollback_success, |
|
fwstats->rollback_failed, |
|
fwstats->delayq_full_error, |
|
fwstats->supprq_full_error, |
|
fwstats->txs_indicate, |
|
fwstats->txs_discard, |
|
fwstats->txs_supp_core, |
|
fwstats->txs_supp_ps, |
|
fwstats->txs_tossed, |
|
fwstats->txs_host_tossed, |
|
fwstats->bus_flow_block, |
|
fwstats->fws_flow_block, |
|
fwstats->send_pkts[0], fwstats->send_pkts[1], |
|
fwstats->send_pkts[2], fwstats->send_pkts[3], |
|
fwstats->send_pkts[4], |
|
fwstats->requested_sent[0], |
|
fwstats->requested_sent[1], |
|
fwstats->requested_sent[2], |
|
fwstats->requested_sent[3], |
|
fwstats->requested_sent[4]); |
|
|
|
return 0; |
|
} |
|
#else |
|
static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data) |
|
{ |
|
return 0; |
|
} |
|
#endif |
|
|
|
struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr) |
|
{ |
|
struct brcmf_fws_info *fws; |
|
struct brcmf_if *ifp; |
|
u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS; |
|
int rc; |
|
u32 mode; |
|
|
|
fws = kzalloc(sizeof(*fws), GFP_KERNEL); |
|
if (!fws) { |
|
rc = -ENOMEM; |
|
goto fail; |
|
} |
|
|
|
spin_lock_init(&fws->spinlock); |
|
|
|
/* store drvr reference */ |
|
fws->drvr = drvr; |
|
fws->fcmode = drvr->settings->fcmode; |
|
|
|
if (!drvr->bus_if->always_use_fws_queue && |
|
(fws->fcmode == BRCMF_FWS_FCMODE_NONE)) { |
|
fws->avoid_queueing = true; |
|
brcmf_dbg(INFO, "FWS queueing will be avoided\n"); |
|
return fws; |
|
} |
|
|
|
fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq"); |
|
if (fws->fws_wq == NULL) { |
|
bphy_err(drvr, "workqueue creation failed\n"); |
|
rc = -EBADF; |
|
goto fail; |
|
} |
|
INIT_WORK(&fws->fws_dequeue_work, brcmf_fws_dequeue_worker); |
|
|
|
/* enable firmware signalling if fcmode active */ |
|
if (fws->fcmode != BRCMF_FWS_FCMODE_NONE) |
|
tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS | |
|
BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS | |
|
BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE | |
|
BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE; |
|
|
|
rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP, |
|
brcmf_fws_notify_credit_map); |
|
if (rc < 0) { |
|
bphy_err(drvr, "register credit map handler failed\n"); |
|
goto fail; |
|
} |
|
rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT, |
|
brcmf_fws_notify_bcmc_credit_support); |
|
if (rc < 0) { |
|
bphy_err(drvr, "register bcmc credit handler failed\n"); |
|
brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP); |
|
goto fail; |
|
} |
|
|
|
/* Setting the iovar may fail if feature is unsupported |
|
* so leave the rc as is so driver initialization can |
|
* continue. Set mode back to none indicating not enabled. |
|
*/ |
|
fws->fw_signals = true; |
|
ifp = brcmf_get_ifp(drvr, 0); |
|
if (brcmf_fil_iovar_int_set(ifp, "tlv", tlv)) { |
|
bphy_err(drvr, "failed to set bdcv2 tlv signaling\n"); |
|
fws->fcmode = BRCMF_FWS_FCMODE_NONE; |
|
fws->fw_signals = false; |
|
} |
|
|
|
if (brcmf_fil_iovar_int_set(ifp, "ampdu_hostreorder", 1)) |
|
brcmf_dbg(INFO, "enabling AMPDU host-reorder failed\n"); |
|
|
|
/* Enable seq number reuse, if supported */ |
|
if (brcmf_fil_iovar_int_get(ifp, "wlfc_mode", &mode) == 0) { |
|
if (BRCMF_FWS_MODE_GET_REUSESEQ(mode)) { |
|
mode = 0; |
|
BRCMF_FWS_MODE_SET_REUSESEQ(mode, 1); |
|
if (brcmf_fil_iovar_int_set(ifp, |
|
"wlfc_mode", mode) == 0) { |
|
BRCMF_FWS_MODE_SET_REUSESEQ(fws->mode, 1); |
|
} |
|
} |
|
} |
|
|
|
brcmf_fws_hanger_init(&fws->hanger); |
|
brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0); |
|
brcmf_fws_macdesc_set_name(fws, &fws->desc.other); |
|
brcmf_dbg(INFO, "added %s\n", fws->desc.other.name); |
|
brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT, |
|
BRCMF_FWS_PSQ_LEN); |
|
|
|
brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n", |
|
fws->fw_signals ? "enabled" : "disabled", tlv); |
|
return fws; |
|
|
|
fail: |
|
brcmf_fws_detach(fws); |
|
return ERR_PTR(rc); |
|
} |
|
|
|
void brcmf_fws_detach(struct brcmf_fws_info *fws) |
|
{ |
|
if (!fws) |
|
return; |
|
|
|
if (fws->fws_wq) |
|
destroy_workqueue(fws->fws_wq); |
|
|
|
/* cleanup */ |
|
brcmf_fws_lock(fws); |
|
brcmf_fws_cleanup(fws, -1); |
|
brcmf_fws_unlock(fws); |
|
|
|
/* free top structure */ |
|
kfree(fws); |
|
} |
|
|
|
void brcmf_fws_debugfs_create(struct brcmf_pub *drvr) |
|
{ |
|
/* create debugfs file for statistics */ |
|
brcmf_debugfs_add_entry(drvr, "fws_stats", |
|
brcmf_debugfs_fws_stats_read); |
|
} |
|
|
|
bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws) |
|
{ |
|
return !fws->avoid_queueing; |
|
} |
|
|
|
bool brcmf_fws_fc_active(struct brcmf_fws_info *fws) |
|
{ |
|
if (!fws->creditmap_received) |
|
return false; |
|
|
|
return fws->fcmode != BRCMF_FWS_FCMODE_NONE; |
|
} |
|
|
|
void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb) |
|
{ |
|
u32 hslot; |
|
|
|
if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) { |
|
brcmu_pkt_buf_free_skb(skb); |
|
return; |
|
} |
|
brcmf_fws_lock(fws); |
|
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); |
|
brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0, 0, |
|
1); |
|
brcmf_fws_unlock(fws); |
|
} |
|
|
|
void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked) |
|
{ |
|
struct brcmf_fws_info *fws = drvr_to_fws(drvr); |
|
struct brcmf_if *ifp; |
|
int i; |
|
|
|
if (fws->avoid_queueing) { |
|
for (i = 0; i < BRCMF_MAX_IFS; i++) { |
|
ifp = drvr->iflist[i]; |
|
if (!ifp || !ifp->ndev) |
|
continue; |
|
brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW, |
|
flow_blocked); |
|
} |
|
} else { |
|
fws->bus_flow_blocked = flow_blocked; |
|
if (!flow_blocked) |
|
brcmf_fws_schedule_deq(fws); |
|
else |
|
fws->stats.bus_flow_block++; |
|
} |
|
}
|
|
|