mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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ed261aac7d
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9528 3c298f89-4303-0410-b956-a3cf2f4a3e73
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/*
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* Misc useful os-independent macros and functions.
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*
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* Copyright 2006, Broadcom Corporation
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* All Rights Reserved.
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*
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* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
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* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
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* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
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* $Id: bcmutils.h,v 1.1.1.16 2006/04/08 06:13:39 honor Exp $
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*/
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#ifndef _pktq_h_
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#define _pktq_h_
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#include <osl.h>
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/* osl multi-precedence packet queue */
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#define PKTQ_LEN_DEFAULT 128 /* Max 128 packets */
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#define PKTQ_MAX_PREC 16 /* Maximum precedence levels */
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struct pktq {
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struct pktq_prec {
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void *head; /* first packet to dequeue */
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void *tail; /* last packet to dequeue */
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uint16 len; /* number of queued packets */
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uint16 max; /* maximum number of queued packets */
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} q[PKTQ_MAX_PREC];
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uint16 num_prec; /* number of precedences in use */
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uint16 hi_prec; /* rapid dequeue hint (>= highest non-empty prec) */
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uint16 max; /* total max packets */
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uint16 len; /* total number of packets */
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};
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#define PKTQ_PREC_ITER(pq, prec) for (prec = (pq)->num_prec - 1; prec >= 0; prec--)
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/* forward definition of ether_addr structure used by some function prototypes */
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struct ether_addr;
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/* operations on a specific precedence in packet queue */
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#define pktq_psetmax(pq, prec, _max) ((pq)->q[prec].max = (_max))
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#define pktq_plen(pq, prec) ((pq)->q[prec].len)
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#define pktq_pavail(pq, prec) ((pq)->q[prec].max - (pq)->q[prec].len)
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#define pktq_pfull(pq, prec) ((pq)->q[prec].len >= (pq)->q[prec].max)
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#define pktq_pempty(pq, prec) ((pq)->q[prec].len == 0)
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#define pktq_ppeek(pq, prec) ((pq)->q[prec].head)
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#define pktq_ppeek_tail(pq, prec) ((pq)->q[prec].tail)
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extern void *pktq_penq(struct pktq *pq, int prec, void *p);
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extern void *pktq_penq_head(struct pktq *pq, int prec, void *p);
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extern void *pktq_pdeq(struct pktq *pq, int prec);
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extern void *pktq_pdeq_tail(struct pktq *pq, int prec);
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/* Empty the queue at particular precedence level */
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extern void pktq_pflush(osl_t *osh, struct pktq *pq, int prec, bool dir);
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/* Remove a specified packet from its queue */
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extern bool pktq_pdel(struct pktq *pq, void *p, int prec);
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/* operations on a set of precedences in packet queue */
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extern int pktq_mlen(struct pktq *pq, uint prec_bmp);
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extern void *pktq_mdeq(struct pktq *pq, uint prec_bmp, int *prec_out);
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/* operations on packet queue as a whole */
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#define pktq_len(pq) ((int)(pq)->len)
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#define pktq_max(pq) ((int)(pq)->max)
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#define pktq_avail(pq) ((int)((pq)->max - (pq)->len))
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#define pktq_full(pq) ((pq)->len >= (pq)->max)
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#define pktq_empty(pq) ((pq)->len == 0)
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/* operations for single precedence queues */
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#define pktenq(pq, p) pktq_penq((pq), 0, (p))
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#define pktenq_head(pq, p) pktq_penq_head((pq), 0, (p))
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#define pktdeq(pq) pktq_pdeq((pq), 0)
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#define pktdeq_tail(pq) pktq_pdeq_tail((pq), 0)
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extern void pktq_init(struct pktq *pq, int num_prec, int max_len);
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/* prec_out may be NULL if caller is not interested in return value */
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extern void *pktq_deq(struct pktq *pq, int *prec_out);
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extern void *pktq_deq_tail(struct pktq *pq, int *prec_out);
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extern void *pktq_peek(struct pktq *pq, int *prec_out);
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extern void *pktq_peek_tail(struct pktq *pq, int *prec_out);
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extern void pktq_flush(osl_t *osh, struct pktq *pq, bool dir); /* Empty the entire queue */
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/* externs */
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/* packet */
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extern uint pktcopy(osl_t *osh, void *p, uint offset, int len, uchar *buf);
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extern uint pkttotlen(osl_t *osh, void *p);
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extern void *pktlast(osl_t *osh, void *p);
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extern void pktsetprio(void *pkt, bool update_vtag);
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#endif /* _pktq_h_ */
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