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Diffstat (limited to 'package/broadcom-wl/src/driver/pktq.h')
| -rw-r--r-- | package/broadcom-wl/src/driver/pktq.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/package/broadcom-wl/src/driver/pktq.h b/package/broadcom-wl/src/driver/pktq.h new file mode 100644 index 0000000000..7fe21815e8 --- /dev/null +++ b/package/broadcom-wl/src/driver/pktq.h @@ -0,0 +1,97 @@ +/* + * Misc useful os-independent macros and functions. + * + * Copyright 2006, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * $Id: bcmutils.h,v 1.1.1.16 2006/04/08 06:13:39 honor Exp $ + */ + +#ifndef _pktq_h_ +#define _pktq_h_ +#include <osl.h> + +/* osl multi-precedence packet queue */ + +#define PKTQ_LEN_DEFAULT 128 /* Max 128 packets */ +#define PKTQ_MAX_PREC 16 /* Maximum precedence levels */ + +struct pktq { + struct pktq_prec { + void *head; /* first packet to dequeue */ + void *tail; /* last packet to dequeue */ + uint16 len; /* number of queued packets */ + uint16 max; /* maximum number of queued packets */ + } q[PKTQ_MAX_PREC]; + uint16 num_prec; /* number of precedences in use */ + uint16 hi_prec; /* rapid dequeue hint (>= highest non-empty prec) */ + uint16 max; /* total max packets */ + uint16 len; /* total number of packets */ +}; + +#define PKTQ_PREC_ITER(pq, prec) for (prec = (pq)->num_prec - 1; prec >= 0; prec--) + +/* forward definition of ether_addr structure used by some function prototypes */ + +struct ether_addr; + +/* operations on a specific precedence in packet queue */ + +#define pktq_psetmax(pq, prec, _max) ((pq)->q[prec].max = (_max)) +#define pktq_plen(pq, prec) ((pq)->q[prec].len) +#define pktq_pavail(pq, prec) ((pq)->q[prec].max - (pq)->q[prec].len) +#define pktq_pfull(pq, prec) ((pq)->q[prec].len >= (pq)->q[prec].max) +#define pktq_pempty(pq, prec) ((pq)->q[prec].len == 0) + +#define pktq_ppeek(pq, prec) ((pq)->q[prec].head) +#define pktq_ppeek_tail(pq, prec) ((pq)->q[prec].tail) + +extern void *pktq_penq(struct pktq *pq, int prec, void *p); +extern void *pktq_penq_head(struct pktq *pq, int prec, void *p); +extern void *pktq_pdeq(struct pktq *pq, int prec); +extern void *pktq_pdeq_tail(struct pktq *pq, int prec); +/* Empty the queue at particular precedence level */ +extern void pktq_pflush(osl_t *osh, struct pktq *pq, int prec, bool dir); +/* Remove a specified packet from its queue */ +extern bool pktq_pdel(struct pktq *pq, void *p, int prec); + +/* operations on a set of precedences in packet queue */ + +extern int pktq_mlen(struct pktq *pq, uint prec_bmp); +extern void *pktq_mdeq(struct pktq *pq, uint prec_bmp, int *prec_out); + +/* operations on packet queue as a whole */ + +#define pktq_len(pq) ((int)(pq)->len) +#define pktq_max(pq) ((int)(pq)->max) +#define pktq_avail(pq) ((int)((pq)->max - (pq)->len)) +#define pktq_full(pq) ((pq)->len >= (pq)->max) +#define pktq_empty(pq) ((pq)->len == 0) + +/* operations for single precedence queues */ +#define pktenq(pq, p) pktq_penq((pq), 0, (p)) +#define pktenq_head(pq, p) pktq_penq_head((pq), 0, (p)) +#define pktdeq(pq) pktq_pdeq((pq), 0) +#define pktdeq_tail(pq) pktq_pdeq_tail((pq), 0) + +extern void pktq_init(struct pktq *pq, int num_prec, int max_len); +/* prec_out may be NULL if caller is not interested in return value */ +extern void *pktq_deq(struct pktq *pq, int *prec_out); +extern void *pktq_deq_tail(struct pktq *pq, int *prec_out); +extern void *pktq_peek(struct pktq *pq, int *prec_out); +extern void *pktq_peek_tail(struct pktq *pq, int *prec_out); +extern void pktq_flush(osl_t *osh, struct pktq *pq, bool dir); /* Empty the entire queue */ + +/* externs */ +/* packet */ +extern uint pktcopy(osl_t *osh, void *p, uint offset, int len, uchar *buf); +extern uint pkttotlen(osl_t *osh, void *p); +extern void *pktlast(osl_t *osh, void *p); + +extern void pktsetprio(void *pkt, bool update_vtag); + +#endif /* _pktq_h_ */ |