| /* |
| * wbuf.h |
| * |
| * Copyright(c) 1998 - 2009 Texas Instruments. All rights reserved. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name Texas Instruments nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| /***************************************************************************/ |
| /* */ |
| /* MODULE: wbuf.h */ |
| /* PURPOSE: manages the allocation/free and field access of the WBUF */ |
| /* */ |
| /***************************************************************************/ |
| #ifndef _WBUF_H_ |
| #define _WBUF_H_ |
| |
| #include <linux/version.h> |
| #include <linux/skbuff.h> |
| #include "tidef.h" |
| #include "queue.h" |
| |
| typedef void WBUF; |
| |
| /* Packet types */ |
| typedef enum |
| { |
| TX_PKT_TYPE_MGMT = 0x01, |
| TX_PKT_TYPE_EAPOL = 0x02, |
| TX_PKT_TYPE_ETHER = 0x04, /* Data packets from the Network interface. */ |
| TX_PKT_TYPE_WLAN_DATA = 0x08 /* Currently includes Null and IAPP packets. */ |
| } TX_PKT_TYPE; |
| |
| #define TX_PKT_FLAGS_LINK_TEST 0x1 /* Tx-Packet-Flag */ |
| #define WSPI_PAD_BYTES 16 /* Add padding before data buffer for WSPI overhead */ |
| |
| /* user callback definition (in tx complete) */ |
| typedef void *CB_ARG; |
| typedef void (*CB_FUNC)(CB_ARG cb_arg); |
| |
| /* |
| * wbuf user fields: |
| */ |
| typedef struct |
| { |
| TQueNodeHdr queNodeHdr; /* The header used for queueing the WBUF */ |
| TX_PKT_TYPE pktType; /* wbuf packet type */ |
| CB_FUNC cb_func; /* callback function to use in tx complete */ |
| CB_ARG cb_arg; /* callback argument to use in tx complete */ |
| TI_UINT8 Tid; /* WLAN TID (traffic identity) */ |
| TI_UINT8 hdrLen; /* WLAN header length, not including alignment pad. */ |
| TI_UINT8 flags; /* Some application flags, see Tx-Packet-Flags defs above. */ |
| } WBUF_PARAMS; |
| |
| |
| |
| #define WBUF_DATA(pWbuf) ( ((struct sk_buff *)(pWbuf))->data ) |
| #define WBUF_LEN(pWbuf) ( ((struct sk_buff *)(pWbuf))->len ) |
| #define WBUF_PRIORITY(pWbuf) ( ((struct sk_buff *)(pWbuf))->priority ) |
| #define WBUF_DEV(pWbuf) ( ((struct sk_buff *)(pWbuf))->dev ) |
| #define WBUF_DEV_SET(pWbuf,pDev) ( ((struct sk_buff *)(pWbuf))->dev) = ((struct net_device *)(pDev)) |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23) |
| #define WBUF_STAMP(pWbuf) ( ((struct sk_buff *)(pWbuf))->tstamp.off_usec ) |
| #else |
| #define WBUF_STAMP(pWbuf) ( ((struct sk_buff *)(pWbuf))->tstamp.tv.nsec ) |
| #endif |
| #define WBUF_CB(pWbuf) ( ((struct sk_buff *)(pWbuf))->cb ) |
| #define WBUF_PKT_TYPE(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->pktType ) |
| #define WBUF_CB_FUNC(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->cb_func ) |
| #define WBUF_CB_ARG(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->cb_arg ) |
| #define WBUF_TID(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->Tid ) |
| #define WBUF_HDR_LEN(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->hdrLen ) |
| #define WBUF_FLAGS(pWbuf) ( ((WBUF_PARAMS *)&(WBUF_CB(pWbuf)))->flags ) |
| |
| /* The offset of the node-header field from the WBUF entry (for queueing) */ |
| #define WBUF_NODE_HDR_OFFSET \ |
| ( (unsigned long) &( ( (WBUF_PARAMS *) &( ( (struct sk_buff *)0 )->cb ) )->queNodeHdr ) ) |
| |
| /* |
| * Allocate WBUF for Tx/Rx packets. |
| * Add 16 bytes before the data buffer for WSPI overhead! |
| */ |
| static inline WBUF *WbufAlloc (TI_HANDLE hOs, TI_UINT32 len) |
| { |
| gfp_t flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL; |
| WBUF *pWbuf = alloc_skb(len + WSPI_PAD_BYTES, flags); |
| |
| if (!pWbuf) |
| { |
| return NULL; |
| } |
| WBUF_DATA (pWbuf) += WSPI_PAD_BYTES; |
| return pWbuf; |
| } |
| |
| #define WbufFree(hOs, pWbuf) ( dev_kfree_skb((struct sk_buff *)pWbuf) ) |
| #define WbufReserve(hOs, pWbuf,len) ( skb_reserve((struct sk_buff *)pWbuf,(int)len) ) |
| |
| #endif |
