/* * Driver O/S-independent utility routines * * Copyright 2007, 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.c,v 1.1.1.1 2008/07/21 09:20:53 james26_jang Exp $ */ #include #include #include #include #ifdef BCMDRIVER #include #include #include #else #include #include #endif /* BCMDRIVER */ #if defined(_WIN32) || defined(NDIS) || defined(__vxworks) || \ defined(_CFE_) || defined(EFI) /* debatable */ #include #endif #include #include #include #include #include #include #include #ifdef BCMPERFSTATS #include #endif #ifdef BCMDRIVER /* nvram vars cache */ static char *nvram_vars = NULL; static int vars_len = -1; /* copy a pkt buffer chain into a buffer */ uint pktcopy(osl_t *osh, void *p, uint offset, int len, uchar *buf) { uint n, ret = 0; if (len < 0) len = 4096; /* "infinite" */ /* skip 'offset' bytes */ for (; p && offset; p = PKTNEXT(osh, p)) { if (offset < (uint)PKTLEN(osh, p)) break; offset -= PKTLEN(osh, p); } if (!p) return 0; /* copy the data */ for (; p && len; p = PKTNEXT(osh, p)) { n = MIN((uint)PKTLEN(osh, p) - offset, (uint)len); bcopy(PKTDATA(osh, p) + offset, buf, n); buf += n; len -= n; ret += n; offset = 0; } return ret; } /* return total length of buffer chain */ uint pkttotlen(osl_t *osh, void *p) { uint total; total = 0; for (; p; p = PKTNEXT(osh, p)) total += PKTLEN(osh, p); return (total); } /* return the last buffer of chained pkt */ void * pktlast(osl_t *osh, void *p) { for (; PKTNEXT(osh, p); p = PKTNEXT(osh, p)) ; return (p); } /* * osl multiple-precedence packet queue * hi_prec is always >= the number of the highest non-empty precedence */ void * pktq_penq(struct pktq *pq, int prec, void *p) { struct pktq_prec *q; ASSERT(prec >= 0 && prec < pq->num_prec); ASSERT(PKTLINK(p) == NULL); /* queueing chains not allowed */ ASSERT(!pktq_full(pq)); ASSERT(!pktq_pfull(pq, prec)); q = &pq->q[prec]; if (q->head) PKTSETLINK(q->tail, p); else q->head = p; q->tail = p; q->len++; pq->len++; if (pq->hi_prec < prec) pq->hi_prec = (uint8)prec; return p; } void * pktq_penq_head(struct pktq *pq, int prec, void *p) { struct pktq_prec *q; ASSERT(prec >= 0 && prec < pq->num_prec); ASSERT(PKTLINK(p) == NULL); /* queueing chains not allowed */ ASSERT(!pktq_full(pq)); ASSERT(!pktq_pfull(pq, prec)); q = &pq->q[prec]; if (q->head == NULL) q->tail = p; PKTSETLINK(p, q->head); q->head = p; q->len++; pq->len++; if (pq->hi_prec < prec) pq->hi_prec = (uint8)prec; return p; } void * pktq_pdeq(struct pktq *pq, int prec) { struct pktq_prec *q; void *p; ASSERT(prec >= 0 && prec < pq->num_prec); q = &pq->q[prec]; if ((p = q->head) == NULL) return NULL; if ((q->head = PKTLINK(p)) == NULL) q->tail = NULL; q->len--; pq->len--; PKTSETLINK(p, NULL); return p; } void * pktq_pdeq_tail(struct pktq *pq, int prec) { struct pktq_prec *q; void *p, *prev; ASSERT(prec >= 0 && prec < pq->num_prec); q = &pq->q[prec]; if ((p = q->head) == NULL) return NULL; for (prev = NULL; p != q->tail; p = PKTLINK(p)) prev = p; if (prev) PKTSETLINK(prev, NULL); else q->head = NULL; q->tail = prev; q->len--; pq->len--; return p; } void pktq_pflush(osl_t *osh, struct pktq *pq, int prec, bool dir) { struct pktq_prec *q; void *p; q = &pq->q[prec]; p = q->head; while (p) { q->head = PKTLINK(p); PKTSETLINK(p, NULL); PKTFREE(osh, p, dir); q->len--; pq->len--; p = q->head; } ASSERT(q->len == 0); q->tail = NULL; } bool pktq_pdel(struct pktq *pq, void *pktbuf, int prec) { struct pktq_prec *q; void *p; ASSERT(prec >= 0 && prec < pq->num_prec); if (!pktbuf) return FALSE; q = &pq->q[prec]; if (q->head == pktbuf) { if ((q->head = PKTLINK(pktbuf)) == NULL) q->tail = NULL; } else { for (p = q->head; p && PKTLINK(p) != pktbuf; p = PKTLINK(p)) ; if (p == NULL) return FALSE; PKTSETLINK(p, PKTLINK(pktbuf)); if (q->tail == pktbuf) q->tail = p; } q->len--; pq->len--; PKTSETLINK(pktbuf, NULL); return TRUE; } void pktq_init(struct pktq *pq, int num_prec, int max_len) { int prec; ASSERT(num_prec > 0 && num_prec <= PKTQ_MAX_PREC); /* pq is variable size; only zero out what's requested */ bzero(pq, OFFSETOF(struct pktq, q) + (sizeof(struct pktq_prec) * num_prec)); pq->num_prec = (uint16)num_prec; pq->max = (uint16)max_len; for (prec = 0; prec < num_prec; prec++) pq->q[prec].max = pq->max; } int pktq_setmax(struct pktq *pq, int max_len) { int prec; if (!max_len) return pq->max; pq->max = (uint16)max_len; for (prec = 0; prec < pq->num_prec; prec++) pq->q[prec].max = pq->max; return pq->max; } void * pktq_deq(struct pktq *pq, int *prec_out) { struct pktq_prec *q; void *p; int prec; if (pq->len == 0) return NULL; while ((prec = pq->hi_prec) > 0 && pq->q[prec].head == NULL) pq->hi_prec--; q = &pq->q[prec]; if ((p = q->head) == NULL) return NULL; if ((q->head = PKTLINK(p)) == NULL) q->tail = NULL; q->len--; pq->len--; if (prec_out) *prec_out = prec; PKTSETLINK(p, NULL); return p; } void * pktq_deq_tail(struct pktq *pq, int *prec_out) { struct pktq_prec *q; void *p, *prev; int prec; if (pq->len == 0) return NULL; for (prec = 0; prec < pq->hi_prec; prec++) if (pq->q[prec].head) break; q = &pq->q[prec]; if ((p = q->head) == NULL) return NULL; for (prev = NULL; p != q->tail; p = PKTLINK(p)) prev = p; if (prev) PKTSETLINK(prev, NULL); else q->head = NULL; q->tail = prev; q->len--; pq->len--; if (prec_out) *prec_out = prec; PKTSETLINK(p, NULL); return p; } void * pktq_peek(struct pktq *pq, int *prec_out) { int prec; if (pq->len == 0) return NULL; while ((prec = pq->hi_prec) > 0 && pq->q[prec].head == NULL) pq->hi_prec--; if (prec_out) *prec_out = prec; return (pq->q[prec].head); } void * pktq_peek_tail(struct pktq *pq, int *prec_out) { int prec; if (pq->len == 0) return NULL; for (prec = 0; prec < pq->hi_prec; prec++) if (pq->q[prec].head) break; if (prec_out) *prec_out = prec; return (pq->q[prec].tail); } void pktq_flush(osl_t *osh, struct pktq *pq, bool dir) { int prec; for (prec = 0; prec < pq->num_prec; prec++) pktq_pflush(osh, pq, prec, dir); ASSERT(pq->len == 0); } /* Return sum of lengths of a specific set of precedences */ int pktq_mlen(struct pktq *pq, uint prec_bmp) { int prec, len; len = 0; for (prec = 0; prec <= pq->hi_prec; prec++) if (prec_bmp & (1 << prec)) len += pq->q[prec].len; return len; } /* Priority dequeue from a specific set of precedences */ void * pktq_mdeq(struct pktq *pq, uint prec_bmp, int *prec_out) { struct pktq_prec *q; void *p; int prec; if (pq->len == 0) return NULL; while ((prec = pq->hi_prec) > 0 && pq->q[prec].head == NULL) pq->hi_prec--; while ((prec_bmp & (1 << prec)) == 0 || pq->q[prec].head == NULL) if (prec-- == 0) return NULL; q = &pq->q[prec]; if ((p = q->head) == NULL) return NULL; if ((q->head = PKTLINK(p)) == NULL) q->tail = NULL; q->len--; if (prec_out) *prec_out = prec; pq->len--; PKTSETLINK(p, NULL); return p; } #endif /* BCMDRIVER */ const unsigned char bcm_ctype[] = { _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 0-7 */ _BCM_C, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C|_BCM_S, _BCM_C, _BCM_C, /* 8-15 */ _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 16-23 */ _BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C,_BCM_C, /* 24-31 */ _BCM_S|_BCM_SP,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 32-39 */ _BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 40-47 */ _BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D,_BCM_D, /* 48-55 */ _BCM_D,_BCM_D,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 56-63 */ _BCM_P, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U|_BCM_X, _BCM_U, /* 64-71 */ _BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 72-79 */ _BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U,_BCM_U, /* 80-87 */ _BCM_U,_BCM_U,_BCM_U,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_P, /* 88-95 */ _BCM_P, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L|_BCM_X, _BCM_L, /* 96-103 */ _BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 104-111 */ _BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L,_BCM_L, /* 112-119 */ _BCM_L,_BCM_L,_BCM_L,_BCM_P,_BCM_P,_BCM_P,_BCM_P,_BCM_C, /* 120-127 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 128-143 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 144-159 */ _BCM_S|_BCM_SP, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 160-175 */ _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, _BCM_P, /* 176-191 */ _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, /* 192-207 */ _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_P, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_U, _BCM_L, /* 208-223 */ _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, /* 224-239 */ _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_P, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L, _BCM_L /* 240-255 */ }; ulong BCMROMFN(bcm_strtoul)(char *cp, char **endp, uint base) { ulong result, value; bool minus; minus = FALSE; while (bcm_isspace(*cp)) cp++; if (cp[0] == '+') cp++; else if (cp[0] == '-') { minus = TRUE; cp++; } if (base == 0) { if (cp[0] == '0') { if ((cp[1] == 'x') || (cp[1] == 'X')) { base = 16; cp = &cp[2]; } else { base = 8; cp = &cp[1]; } } else base = 10; } else if (base == 16 && (cp[0] == '0') && ((cp[1] == 'x') || (cp[1] == 'X'))) { cp = &cp[2]; } result = 0; while (bcm_isxdigit(*cp) && (value = bcm_isdigit(*cp) ? *cp-'0' : bcm_toupper(*cp)-'A'+10) < base) { result = result*base + value; cp++; } if (minus) result = (ulong)(result * -1); if (endp) *endp = (char *)cp; return (result); } int BCMROMFN(bcm_atoi)(char *s) { return (int)bcm_strtoul(s, NULL, 10); } /* return pointer to location of substring 'needle' in 'haystack' */ char* BCMROMFN(bcmstrstr)(char *haystack, char *needle) { int len, nlen; int i; if ((haystack == NULL) || (needle == NULL)) return (haystack); nlen = strlen(needle); len = strlen(haystack) - nlen + 1; for (i = 0; i < len; i++) if (memcmp(needle, &haystack[i], nlen) == 0) return (&haystack[i]); return (NULL); } char* BCMROMFN(bcmstrcat)(char *dest, const char *src) { strcpy(&dest[strlen(dest)], src); return (dest); } char* BCMROMFN(bcmstrncat)(char *dest, const char *src, uint size) { char *endp; char *p; p = dest + strlen(dest); endp = p + size; while (p != endp && (*p++ = *src++) != '\0') ; return (dest); } /* parse a xx:xx:xx:xx:xx:xx format ethernet address */ int BCMROMFN(bcm_ether_atoe)(char *p, struct ether_addr *ea) { int i = 0; for (;;) { ea->octet[i++] = (char) bcm_strtoul(p, &p, 16); if (!*p++ || i == 6) break; } return (i == 6); } #if defined(CONFIG_USBRNDIS_RETAIL) || defined(NDIS_MINIPORT_DRIVER) /* registry routine buffer preparation utility functions: * parameter order is like strncpy, but returns count * of bytes copied. Minimum bytes copied is null char(1)/wchar(2) */ ulong wchar2ascii( char *abuf, ushort *wbuf, ushort wbuflen, ulong abuflen ) { ulong copyct = 1; ushort i; if (abuflen == 0) return 0; /* wbuflen is in bytes */ wbuflen /= sizeof(ushort); for (i = 0; i < wbuflen; ++i) { if (--abuflen == 0) break; *abuf++ = (char) *wbuf++; ++copyct; } *abuf = '\0'; return copyct; } #endif /* CONFIG_USBRNDIS_RETAIL || NDIS_MINIPORT_DRIVER */ char * bcm_ether_ntoa(struct ether_addr *ea, char *buf) { snprintf(buf, 18, "%02x:%02x:%02x:%02x:%02x:%02x", ea->octet[0]&0xff, ea->octet[1]&0xff, ea->octet[2]&0xff, ea->octet[3]&0xff, ea->octet[4]&0xff, ea->octet[5]&0xff); return (buf); } char * bcm_ip_ntoa(struct ipv4_addr *ia, char *buf) { snprintf(buf, 16, "%d.%d.%d.%d", ia->addr[0], ia->addr[1], ia->addr[2], ia->addr[3]); return (buf); } #ifdef BCMDRIVER void bcm_mdelay(uint ms) { uint i; for (i = 0; i < ms; i++) { OSL_DELAY(1000); } } /* * Search the name=value vars for a specific one and return its value. * Returns NULL if not found. */ char * getvar(char *vars, const char *name) { #ifdef _MINOSL_ return NULL; #else char *s; int len; if (!name) return NULL; len = strlen(name); if (len == 0) return NULL; /* first look in vars[] */ for (s = vars; s && *s;) { /* CSTYLED */ if ((bcmp(s, name, len) == 0) && (s[len] == '=')) return (&s[len+1]); while (*s++) ; } /* then query nvram */ return (nvram_get(name)); #endif /* _MINOSL_ */ } /* * Search the vars for a specific one and return its value as * an integer. Returns 0 if not found. */ int getintvar(char *vars, const char *name) { #ifdef _MINOSL_ return 0; #else char *val; if ((val = getvar(vars, name)) == NULL) return (0); return (bcm_strtoul(val, NULL, 0)); #endif /* _MINOSL_ */ } /* Search for token in comma separated token-string */ static int findmatch(char *string, char *name) { uint len; char *c; len = strlen(name); /* CSTYLED */ while ((c = strchr(string, ',')) != NULL) { if (len == (uint)(c - string) && !strncmp(string, name, len)) return 1; string = c + 1; } return (!strcmp(string, name)); } /* Return gpio pin number assigned to the named pin * * Variable should be in format: * * gpio=pin_name,pin_name * * This format allows multiple features to share the gpio with mutual * understanding. * * 'def_pin' is returned if a specific gpio is not defined for the requested functionality * and if def_pin is not used by others. */ uint getgpiopin(char *vars, char *pin_name, uint def_pin) { char name[] = "gpioXXXX"; char *val; uint pin; /* Go thru all possibilities till a match in pin name */ for (pin = 0; pin < GPIO_NUMPINS; pin ++) { snprintf(name, sizeof(name), "gpio%d", pin); val = getvar(vars, name); if (val && findmatch(val, pin_name)) return pin; } if (def_pin != GPIO_PIN_NOTDEFINED) { /* make sure the default pin is not used by someone else */ snprintf(name, sizeof(name), "gpio%d", def_pin); if (getvar(vars, name)) { def_pin = GPIO_PIN_NOTDEFINED; } } return def_pin; } #ifdef BCMPERFSTATS #define LOGSIZE 256 /* should be power of 2 to avoid div below */ static struct { uint cycles; char *fmt; uint a1; uint a2; } logtab[LOGSIZE]; /* last entry logged */ static uint logi = 0; /* next entry to read */ static uint readi = 0; void bcm_perf_enable() { BCMPERF_ENABLE_INSTRCOUNT(); BCMPERF_ENABLE_ICACHE_MISS(); BCMPERF_ENABLE_ICACHE_HIT(); } void bcmlog(char *fmt, uint a1, uint a2) { static uint last = 0; uint cycles, i; OSL_GETCYCLES(cycles); i = logi; logtab[i].cycles = cycles - last; logtab[i].fmt = fmt; logtab[i].a1 = a1; logtab[i].a2 = a2; logi = (i + 1) % LOGSIZE; last = cycles; } void bcmstats(char *fmt) { static uint last = 0; static uint32 ic_miss = 0; static uint32 instr_count = 0; uint32 ic_miss_cur; uint32 instr_count_cur; uint cycles, i; OSL_GETCYCLES(cycles); BCMPERF_GETICACHE_MISS(ic_miss_cur); BCMPERF_GETINSTRCOUNT(instr_count_cur); i = logi; logtab[i].cycles = cycles - last; logtab[i].a1 = ic_miss_cur - ic_miss; logtab[i].a2 = instr_count_cur - instr_count; logtab[i].fmt = fmt; logi = (i + 1) % LOGSIZE; last = cycles; instr_count = instr_count_cur; ic_miss = ic_miss_cur; } void bcmdumplog(char *buf, int size) { char *limit, *line; int j = 0; int num; limit = buf + size - 80; *buf = '\0'; num = logi - readi; if (num < 0) num += LOGSIZE; /* print in chronological order */ for (j = 0; j < num && (buf < limit); readi = (readi + 1) % LOGSIZE, j++) { if (logtab[readi].fmt == NULL) continue; line = buf; buf += sprintf(buf, "%d\t", logtab[readi].cycles); buf += sprintf(buf, logtab[readi].fmt, logtab[readi].a1, logtab[readi].a2); buf += sprintf(buf, "\n"); } } /* * Dump one log entry at a time. * Return index of next entry or -1 when no more . */ int bcmdumplogent(char *buf, uint i) { bool hit; /* * If buf is NULL, return the starting index, * interpreting i as the indicator of last 'i' entries to dump. */ if (buf == NULL) { i = ((i > 0) && (i < (LOGSIZE - 1))) ? i : (LOGSIZE - 1); return ((logi - i) % LOGSIZE); } *buf = '\0'; ASSERT(i < LOGSIZE); if (i == logi) return (-1); hit = FALSE; for (; (i != logi) && !hit; i = (i + 1) % LOGSIZE) { if (logtab[i].fmt == NULL) continue; buf += sprintf(buf, "%d: %d\t", i, logtab[i].cycles); buf += sprintf(buf, logtab[i].fmt, logtab[i].a1, logtab[i].a2); buf += sprintf(buf, "\n"); hit = TRUE; } return (i); } #endif /* BCMPERFSTATS */ /* Takes an Ethernet frame and sets out-of-bound PKTPRIO. * Also updates the inplace vlan tag if requested. * For debugging, it returns an indication of what it did. */ uint pktsetprio(void *pkt, bool update_vtag) { struct ether_header *eh; struct ethervlan_header *evh; uint8 *pktdata; int priority = 0; int rc = 0; pktdata = (uint8 *) PKTDATA(NULL, pkt); ASSERT(ISALIGNED((uintptr)pktdata, sizeof(uint16))); eh = (struct ether_header *) pktdata; if (ntoh16(eh->ether_type) == ETHER_TYPE_8021Q) { uint16 vlan_tag; int vlan_prio, dscp_prio = 0; evh = (struct ethervlan_header *)eh; vlan_tag = ntoh16(evh->vlan_tag); vlan_prio = (int) (vlan_tag >> VLAN_PRI_SHIFT) & VLAN_PRI_MASK; if (ntoh16(evh->ether_type) == ETHER_TYPE_IP) { uint8 *ip_body = pktdata + sizeof(struct ethervlan_header); uint8 tos_tc = IP_TOS(ip_body); dscp_prio = (int)(tos_tc >> IPV4_TOS_PREC_SHIFT); if ((IP_VER(ip_body) == IP_VER_4) && (IPV4_PROT(ip_body) == IP_PROT_TCP)) { int ip_len; int src_port; bool src_port_exc; uint8 *tcp_hdr; ip_len = IPV4_PAYLOAD_LEN(ip_body); tcp_hdr = IPV4_NO_OPTIONS_PAYLOAD(ip_body); src_port = TCP_SRC_PORT(tcp_hdr); src_port_exc = (src_port == 10110) || (src_port == 10120) || (src_port == 10130) || (src_port == 10140); if ((ip_len == 40) && src_port_exc && TCP_IS_ACK(tcp_hdr)) { dscp_prio = 7; } } } /* DSCP priority gets precedence over 802.1P (vlan tag) */ if (dscp_prio != 0) { priority = dscp_prio; rc |= PKTPRIO_VDSCP; } else { priority = vlan_prio; rc |= PKTPRIO_VLAN; } /* * If the DSCP priority is not the same as the VLAN priority, * then overwrite the priority field in the vlan tag, with the * DSCP priority value. This is required for Linux APs because * the VLAN driver on Linux, overwrites the skb->priority field * with the priority value in the vlan tag */ if (update_vtag && (priority != vlan_prio)) { vlan_tag &= ~(VLAN_PRI_MASK << VLAN_PRI_SHIFT); vlan_tag |= (uint16)priority << VLAN_PRI_SHIFT; evh->vlan_tag = hton16(vlan_tag); rc |= PKTPRIO_UPD; } } else if (ntoh16(eh->ether_type) == ETHER_TYPE_IP) { uint8 *ip_body = pktdata + sizeof(struct ether_header); uint8 tos_tc = IP_TOS(ip_body); priority = (int)(tos_tc >> IPV4_TOS_PREC_SHIFT); rc |= PKTPRIO_DSCP; if ((IP_VER(ip_body) == IP_VER_4) && (IPV4_PROT(ip_body) == IP_PROT_TCP)) { int ip_len; int src_port; bool src_port_exc; uint8 *tcp_hdr; ip_len = IPV4_PAYLOAD_LEN(ip_body); tcp_hdr = IPV4_NO_OPTIONS_PAYLOAD(ip_body); src_port = TCP_SRC_PORT(tcp_hdr); src_port_exc = (src_port == 10110) || (src_port == 10120) || (src_port == 10130) || (src_port == 10140); if ((ip_len == 40) && src_port_exc && TCP_IS_ACK(tcp_hdr)) { priority = 7; } } } ASSERT(priority >= 0 && priority <= MAXPRIO); PKTSETPRIO(pkt, priority); return (rc | priority); } static char bcm_undeferrstr[BCME_STRLEN]; static const char *bcmerrorstrtable[] = BCMERRSTRINGTABLE; /* Convert the error codes into related error strings */ const char * bcmerrorstr(int bcmerror) { /* check if someone added a bcmerror code but forgot to add errorstring */ ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(bcmerrorstrtable) - 1)); if (bcmerror > 0 || bcmerror < BCME_LAST) { snprintf(bcm_undeferrstr, BCME_STRLEN, "Undefined error %d", bcmerror); return bcm_undeferrstr; } ASSERT(strlen(bcmerrorstrtable[-bcmerror]) < BCME_STRLEN); return bcmerrorstrtable[-bcmerror]; } static void BCMINITFN(bcm_nvram_refresh)(char *flash) { int i; int ret = 0; ASSERT(flash); /* default "empty" vars cache */ bzero(flash, 2); if ((ret = nvram_getall(flash, NVRAM_SPACE))) return; /* determine nvram length */ for (i = 0; i < NVRAM_SPACE; i++) { if (flash[i] == '\0' && flash[i+1] == '\0') break; } if (i > 1) vars_len = i + 2; else vars_len = 0; } char * bcm_nvram_vars(uint *length) { #ifndef BCMNVRAMR /* cache may be stale if nvram is read/write */ if (nvram_vars) { ASSERT(!bcmreclaimed); bcm_nvram_refresh(nvram_vars); } #endif if (length) *length = vars_len; return nvram_vars; } /* copy nvram vars into locally-allocated multi-string array */ int BCMINITFN(bcm_nvram_cache)(void *sbh) { void *osh; int ret = 0; char *flash = NULL; if (vars_len >= 0) { #ifndef BCMNVRAMR bcm_nvram_refresh(nvram_vars); #endif return 0; } osh = sb_osh((sb_t *)sbh); /* allocate memory and read in flash */ if (!(flash = MALLOC(osh, NVRAM_SPACE))) { ret = BCME_NOMEM; goto exit; } bcm_nvram_refresh(flash); #ifdef BCMNVRAMR if (vars_len > 3) { /* copy into a properly-sized buffer */ if (!(nvram_vars = MALLOC(osh, vars_len))) { ret = BCME_NOMEM; } else bcopy(flash, nvram_vars, vars_len); } MFREE(osh, flash, NVRAM_SPACE); #else /* cache must be full size of nvram if read/write */ nvram_vars = flash; #endif /* BCMNVRAMR */ exit: return ret; } #ifdef BCMDBG_PKT /* pkt logging for debugging */ /* Add a packet to the pktlist */ void pktlist_add(pktlist_info_t *pktlist, void *pkt) { uint i; ASSERT(pktlist->count < PKTLIST_SIZE); /* Verify the packet is not already part of the list */ for (i = 0; i < pktlist->count; i++) { if (pktlist->list[i] == pkt) ASSERT(0); } pktlist->list[pktlist->count] = pkt; pktlist->count++; return; } /* Remove a packet from the pktlist */ void pktlist_remove(pktlist_info_t *pktlist, void *pkt) { uint i; uint num = pktlist->count; /* find the index where pkt exists */ for (i = 0; i < num; i++) { /* check for the existence of pkt in the list */ if (pktlist->list[i] == pkt) { /* replace with the last element */ pktlist->list[i] = pktlist->list[num-1]; pktlist->count--; return; } } ASSERT(0); } /* Dump the pktlist (and the contents of each packet if 'data' * is set). 'buf' should be large enough */ char * pktlist_dump(pktlist_info_t *pktlist, char *buf) { char *obuf; uint i; obuf = buf; buf += sprintf(buf, "Packet list dump:\n"); for (i = 0; i < (pktlist->count); i++) { buf += sprintf(buf, "0x%p\t", pktlist->list[i]); #ifdef NOTDEF /* Remove this ifdef to print pkttag and pktdata */ if (PKTTAG(pktlist->list[i])) { /* Print pkttag */ buf += sprintf(buf, "Pkttag(in hex): "); buf += bcm_format_hex(buf, PKTTAG(pktlist->list[i]), OSL_PKTTAG_SZ); } buf += sprintf(buf, "Pktdata(in hex): "); buf += bcm_format_hex(buf, PKTDATA(NULL, pktlist->list[i]), PKTLEN(NULL, pktlist->list[i])); #endif /* NOTDEF */ buf += sprintf(buf, "\n"); } return obuf; } #endif /* BCMDBG_PKT */ /* iovar table lookup */ const bcm_iovar_t* bcm_iovar_lookup(const bcm_iovar_t *table, const char *name) { const bcm_iovar_t *vi; const char *lookup_name; /* skip any ':' delimited option prefixes */ lookup_name = strrchr(name, ':'); if (lookup_name != NULL) lookup_name++; else lookup_name = name; ASSERT(table); for (vi = table; vi->name; vi++) { if (!strcmp(vi->name, lookup_name)) return vi; } /* ran to end of table */ return NULL; /* var name not found */ } int bcm_iovar_lencheck(const bcm_iovar_t *vi, void *arg, int len, bool set) { int bcmerror = 0; /* length check on io buf */ switch (vi->type) { case IOVT_BOOL: case IOVT_INT8: case IOVT_INT16: case IOVT_INT32: case IOVT_UINT8: case IOVT_UINT16: case IOVT_UINT32: /* all integers are int32 sized args at the ioctl interface */ if (len < (int)sizeof(int)) { bcmerror = BCME_BUFTOOSHORT; } break; case IOVT_BUFFER: /* buffer must meet minimum length requirement */ if (len < vi->minlen) { bcmerror = BCME_BUFTOOSHORT; } break; case IOVT_VOID: if (!set) { /* Cannot return nil... */ bcmerror = BCME_UNSUPPORTED; } else if (len) { /* Set is an action w/o parameters */ bcmerror = BCME_BUFTOOLONG; } break; default: /* unknown type for length check in iovar info */ ASSERT(0); bcmerror = BCME_UNSUPPORTED; } return bcmerror; } #endif /* BCMDRIVER */ /******************************************************************************* * crc8 * * Computes a crc8 over the input data using the polynomial: * * x^8 + x^7 +x^6 + x^4 + x^2 + 1 * * The caller provides the initial value (either CRC8_INIT_VALUE * or the previous returned value) to allow for processing of * discontiguous blocks of data. When generating the CRC the * caller is responsible for complementing the final return value * and inserting it into the byte stream. When checking, a final * return value of CRC8_GOOD_VALUE indicates a valid CRC. * * Reference: Dallas Semiconductor Application Note 27 * Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms", * ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd., * ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt * * **************************************************************************** */ static const uint8 crc8_table[256] = { 0x00, 0xF7, 0xB9, 0x4E, 0x25, 0xD2, 0x9C, 0x6B, 0x4A, 0xBD, 0xF3, 0x04, 0x6F, 0x98, 0xD6, 0x21, 0x94, 0x63, 0x2D, 0xDA, 0xB1, 0x46, 0x08, 0xFF, 0xDE, 0x29, 0x67, 0x90, 0xFB, 0x0C, 0x42, 0xB5, 0x7F, 0x88, 0xC6, 0x31, 0x5A, 0xAD, 0xE3, 0x14, 0x35, 0xC2, 0x8C, 0x7B, 0x10, 0xE7, 0xA9, 0x5E, 0xEB, 0x1C, 0x52, 0xA5, 0xCE, 0x39, 0x77, 0x80, 0xA1, 0x56, 0x18, 0xEF, 0x84, 0x73, 0x3D, 0xCA, 0xFE, 0x09, 0x47, 0xB0, 0xDB, 0x2C, 0x62, 0x95, 0xB4, 0x43, 0x0D, 0xFA, 0x91, 0x66, 0x28, 0xDF, 0x6A, 0x9D, 0xD3, 0x24, 0x4F, 0xB8, 0xF6, 0x01, 0x20, 0xD7, 0x99, 0x6E, 0x05, 0xF2, 0xBC, 0x4B, 0x81, 0x76, 0x38, 0xCF, 0xA4, 0x53, 0x1D, 0xEA, 0xCB, 0x3C, 0x72, 0x85, 0xEE, 0x19, 0x57, 0xA0, 0x15, 0xE2, 0xAC, 0x5B, 0x30, 0xC7, 0x89, 0x7E, 0x5F, 0xA8, 0xE6, 0x11, 0x7A, 0x8D, 0xC3, 0x34, 0xAB, 0x5C, 0x12, 0xE5, 0x8E, 0x79, 0x37, 0xC0, 0xE1, 0x16, 0x58, 0xAF, 0xC4, 0x33, 0x7D, 0x8A, 0x3F, 0xC8, 0x86, 0x71, 0x1A, 0xED, 0xA3, 0x54, 0x75, 0x82, 0xCC, 0x3B, 0x50, 0xA7, 0xE9, 0x1E, 0xD4, 0x23, 0x6D, 0x9A, 0xF1, 0x06, 0x48, 0xBF, 0x9E, 0x69, 0x27, 0xD0, 0xBB, 0x4C, 0x02, 0xF5, 0x40, 0xB7, 0xF9, 0x0E, 0x65, 0x92, 0xDC, 0x2B, 0x0A, 0xFD, 0xB3, 0x44, 0x2F, 0xD8, 0x96, 0x61, 0x55, 0xA2, 0xEC, 0x1B, 0x70, 0x87, 0xC9, 0x3E, 0x1F, 0xE8, 0xA6, 0x51, 0x3A, 0xCD, 0x83, 0x74, 0xC1, 0x36, 0x78, 0x8F, 0xE4, 0x13, 0x5D, 0xAA, 0x8B, 0x7C, 0x32, 0xC5, 0xAE, 0x59, 0x17, 0xE0, 0x2A, 0xDD, 0x93, 0x64, 0x0F, 0xF8, 0xB6, 0x41, 0x60, 0x97, 0xD9, 0x2E, 0x45, 0xB2, 0xFC, 0x0B, 0xBE, 0x49, 0x07, 0xF0, 0x9B, 0x6C, 0x22, 0xD5, 0xF4, 0x03, 0x4D, 0xBA, 0xD1, 0x26, 0x68, 0x9F }; #define CRC_INNER_LOOP(n, c, x) \ (c) = ((c) >> 8) ^ crc##n##_table[((c) ^ (x)) & 0xff] uint8 BCMROMFN(hndcrc8)( uint8 *pdata, /* pointer to array of data to process */ uint nbytes, /* number of input data bytes to process */ uint8 crc /* either CRC8_INIT_VALUE or previous return value */ ) { /* hard code the crc loop instead of using CRC_INNER_LOOP macro * to avoid the undefined and unnecessary (uint8 >> 8) operation. */ while (nbytes-- > 0) crc = crc8_table[(crc ^ *pdata++) & 0xff]; return crc; } /******************************************************************************* * crc16 * * Computes a crc16 over the input data using the polynomial: * * x^16 + x^12 +x^5 + 1 * * The caller provides the initial value (either CRC16_INIT_VALUE * or the previous returned value) to allow for processing of * discontiguous blocks of data. When generating the CRC the * caller is responsible for complementing the final return value * and inserting it into the byte stream. When checking, a final * return value of CRC16_GOOD_VALUE indicates a valid CRC. * * Reference: Dallas Semiconductor Application Note 27 * Williams, Ross N., "A Painless Guide to CRC Error Detection Algorithms", * ver 3, Aug 1993, ross@guest.adelaide.edu.au, Rocksoft Pty Ltd., * ftp://ftp.rocksoft.com/clients/rocksoft/papers/crc_v3.txt * * **************************************************************************** */ static const uint16 crc16_table[256] = { 0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF, 0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7, 0x1081, 0x0108, 0x3393, 0x221A, 0x56A5, 0x472C, 0x75B7, 0x643E, 0x9CC9, 0x8D40, 0xBFDB, 0xAE52, 0xDAED, 0xCB64, 0xF9FF, 0xE876, 0x2102, 0x308B, 0x0210, 0x1399, 0x6726, 0x76AF, 0x4434, 0x55BD, 0xAD4A, 0xBCC3, 0x8E58, 0x9FD1, 0xEB6E, 0xFAE7, 0xC87C, 0xD9F5, 0x3183, 0x200A, 0x1291, 0x0318, 0x77A7, 0x662E, 0x54B5, 0x453C, 0xBDCB, 0xAC42, 0x9ED9, 0x8F50, 0xFBEF, 0xEA66, 0xD8FD, 0xC974, 0x4204, 0x538D, 0x6116, 0x709F, 0x0420, 0x15A9, 0x2732, 0x36BB, 0xCE4C, 0xDFC5, 0xED5E, 0xFCD7, 0x8868, 0x99E1, 0xAB7A, 0xBAF3, 0x5285, 0x430C, 0x7197, 0x601E, 0x14A1, 0x0528, 0x37B3, 0x263A, 0xDECD, 0xCF44, 0xFDDF, 0xEC56, 0x98E9, 0x8960, 0xBBFB, 0xAA72, 0x6306, 0x728F, 0x4014, 0x519D, 0x2522, 0x34AB, 0x0630, 0x17B9, 0xEF4E, 0xFEC7, 0xCC5C, 0xDDD5, 0xA96A, 0xB8E3, 0x8A78, 0x9BF1, 0x7387, 0x620E, 0x5095, 0x411C, 0x35A3, 0x242A, 0x16B1, 0x0738, 0xFFCF, 0xEE46, 0xDCDD, 0xCD54, 0xB9EB, 0xA862, 0x9AF9, 0x8B70, 0x8408, 0x9581, 0xA71A, 0xB693, 0xC22C, 0xD3A5, 0xE13E, 0xF0B7, 0x0840, 0x19C9, 0x2B52, 0x3ADB, 0x4E64, 0x5FED, 0x6D76, 0x7CFF, 0x9489, 0x8500, 0xB79B, 0xA612, 0xD2AD, 0xC324, 0xF1BF, 0xE036, 0x18C1, 0x0948, 0x3BD3, 0x2A5A, 0x5EE5, 0x4F6C, 0x7DF7, 0x6C7E, 0xA50A, 0xB483, 0x8618, 0x9791, 0xE32E, 0xF2A7, 0xC03C, 0xD1B5, 0x2942, 0x38CB, 0x0A50, 0x1BD9, 0x6F66, 0x7EEF, 0x4C74, 0x5DFD, 0xB58B, 0xA402, 0x9699, 0x8710, 0xF3AF, 0xE226, 0xD0BD, 0xC134, 0x39C3, 0x284A, 0x1AD1, 0x0B58, 0x7FE7, 0x6E6E, 0x5CF5, 0x4D7C, 0xC60C, 0xD785, 0xE51E, 0xF497, 0x8028, 0x91A1, 0xA33A, 0xB2B3, 0x4A44, 0x5BCD, 0x6956, 0x78DF, 0x0C60, 0x1DE9, 0x2F72, 0x3EFB, 0xD68D, 0xC704, 0xF59F, 0xE416, 0x90A9, 0x8120, 0xB3BB, 0xA232, 0x5AC5, 0x4B4C, 0x79D7, 0x685E, 0x1CE1, 0x0D68, 0x3FF3, 0x2E7A, 0xE70E, 0xF687, 0xC41C, 0xD595, 0xA12A, 0xB0A3, 0x8238, 0x93B1, 0x6B46, 0x7ACF, 0x4854, 0x59DD, 0x2D62, 0x3CEB, 0x0E70, 0x1FF9, 0xF78F, 0xE606, 0xD49D, 0xC514, 0xB1AB, 0xA022, 0x92B9, 0x8330, 0x7BC7, 0x6A4E, 0x58D5, 0x495C, 0x3DE3, 0x2C6A, 0x1EF1, 0x0F78 }; uint16 BCMROMFN(hndcrc16)( uint8 *pdata, /* pointer to array of data to process */ uint nbytes, /* number of input data bytes to process */ uint16 crc /* either CRC16_INIT_VALUE or previous return value */ ) { while (nbytes-- > 0) CRC_INNER_LOOP(16, crc, *pdata++); return crc; } static const uint32 crc32_table[256] = { 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }; uint32 BCMROMFN(hndcrc32)( uint8 *pdata, /* pointer to array of data to process */ uint nbytes, /* number of input data bytes to process */ uint32 crc /* either CRC32_INIT_VALUE or previous return value */ ) { uint8 *pend; #ifdef __mips__ uint8 tmp[4]; ulong *tptr = (ulong *)tmp; /* in case the beginning of the buffer isn't aligned */ pend = (uint8 *)((uint)(pdata + 3) & 0xfffffffc); nbytes -= (pend - pdata); while (pdata < pend) CRC_INNER_LOOP(32, crc, *pdata++); /* handle bulk of data as 32-bit words */ pend = pdata + (nbytes & 0xfffffffc); while (pdata < pend) { *tptr = *(ulong *)pdata; pdata += sizeof(ulong *); CRC_INNER_LOOP(32, crc, tmp[0]); CRC_INNER_LOOP(32, crc, tmp[1]); CRC_INNER_LOOP(32, crc, tmp[2]); CRC_INNER_LOOP(32, crc, tmp[3]); } /* 1-3 bytes at end of buffer */ pend = pdata + (nbytes & 0x03); while (pdata < pend) CRC_INNER_LOOP(32, crc, *pdata++); #else pend = pdata + nbytes; while (pdata < pend) CRC_INNER_LOOP(32, crc, *pdata++); #endif /* __mips__ */ return crc; } #ifdef notdef #define CLEN 1499 /* CRC Length */ #define CBUFSIZ (CLEN+4) #define CNBUFS 5 /* # of bufs */ void testcrc32(void) { uint j, k, l; uint8 *buf; uint len[CNBUFS]; uint32 crcr; uint32 crc32tv[CNBUFS] = {0xd2cb1faa, 0xd385c8fa, 0xf5b4f3f3, 0x55789e20, 0x00343110}; ASSERT((buf = MALLOC(CBUFSIZ*CNBUFS)) != NULL); /* step through all possible alignments */ for (l = 0; l <= 4; l++) { for (j = 0; j < CNBUFS; j++) { len[j] = CLEN; for (k = 0; k < len[j]; k++) *(buf + j*CBUFSIZ + (k+l)) = (j+k) & 0xff; } for (j = 0; j < CNBUFS; j++) { crcr = crc32(buf + j*CBUFSIZ + l, len[j], CRC32_INIT_VALUE); ASSERT(crcr == crc32tv[j]); } } MFREE(buf, CBUFSIZ*CNBUFS); return; } #endif /* notdef */ /* * Advance from the current 1-byte tag/1-byte length/variable-length value * triple, to the next, returning a pointer to the next. * If the current or next TLV is invalid (does not fit in given buffer length), * NULL is returned. * *buflen is not modified if the TLV elt parameter is invalid, or is decremented * by the TLV parameter's length if it is valid. */ bcm_tlv_t * BCMROMFN(bcm_next_tlv)(bcm_tlv_t *elt, int *buflen) { int len; /* validate current elt */ if (!bcm_valid_tlv(elt, *buflen)) return NULL; /* advance to next elt */ len = elt->len; elt = (bcm_tlv_t*)(elt->data + len); *buflen -= (2 + len); /* validate next elt */ if (!bcm_valid_tlv(elt, *buflen)) return NULL; return elt; } /* * Traverse a string of 1-byte tag/1-byte length/variable-length value * triples, returning a pointer to the substring whose first element * matches tag */ bcm_tlv_t * BCMROMFN(bcm_parse_tlvs)(void *buf, int buflen, uint key) { bcm_tlv_t *elt; int totlen; elt = (bcm_tlv_t*)buf; totlen = buflen; /* find tagged parameter */ while (totlen >= 2) { int len = elt->len; /* validate remaining totlen */ if ((elt->id == key) && (totlen >= (len + 2))) return (elt); elt = (bcm_tlv_t*)((uint8*)elt + (len + 2)); totlen -= (len + 2); } return NULL; } /* * Traverse a string of 1-byte tag/1-byte length/variable-length value * triples, returning a pointer to the substring whose first element * matches tag. Stop parsing when we see an element whose ID is greater * than the target key. */ bcm_tlv_t * BCMROMFN(bcm_parse_ordered_tlvs)(void *buf, int buflen, uint key) { bcm_tlv_t *elt; int totlen; elt = (bcm_tlv_t*)buf; totlen = buflen; /* find tagged parameter */ while (totlen >= 2) { uint id = elt->id; int len = elt->len; /* Punt if we start seeing IDs > than target key */ if (id > key) return (NULL); /* validate remaining totlen */ if ((id == key) && (totlen >= (len + 2))) return (elt); elt = (bcm_tlv_t*)((uint8*)elt + (len + 2)); totlen -= (len + 2); } return NULL; } /* Produce a human-readable string for boardrev */ char * bcm_brev_str(uint16 brev, char *buf) { if (brev < 0x100) snprintf(buf, 8, "%d.%d", (brev & 0xf0) >> 4, brev & 0xf); else snprintf(buf, 8, "%c%03x", ((brev & 0xf000) == 0x1000) ? 'P' : 'A', brev & 0xfff); return (buf); } #define BUFSIZE_TODUMP_ATONCE 512 /* Buffer size */ /* dump large strings to console */ void printfbig(char *buf) { uint len, max_len; char c; len = strlen(buf); max_len = BUFSIZE_TODUMP_ATONCE; while (len > max_len) { c = buf[max_len]; buf[max_len] = '\0'; printf("%s", buf); buf[max_len] = c; buf += max_len; len -= max_len; } /* print the remaining string */ printf("%s\n", buf); return; } /* routine to dump fields in a fileddesc structure */ uint bcmdumpfields(readreg_rtn read_rtn, void *arg0, void *arg1, struct fielddesc *fielddesc_array, char *buf, uint32 bufsize) { uint filled_len; int len; struct fielddesc *cur_ptr; filled_len = 0; cur_ptr = fielddesc_array; while (bufsize > 1) { if (cur_ptr->nameandfmt == NULL) break; len = snprintf(buf, bufsize, cur_ptr->nameandfmt, read_rtn(arg0, arg1, cur_ptr->offset)); /* check for snprintf overflow or error */ if (len < 0 || (uint32)len >= bufsize) len = bufsize - 1; buf += len; bufsize -= len; filled_len += len; cur_ptr++; } return filled_len; } uint bcm_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen) { uint len; len = strlen(name) + 1; if ((len + datalen) > buflen) return 0; strncpy(buf, name, buflen); /* append data onto the end of the name string */ memcpy(&buf[len], data, datalen); len += datalen; return len; } /* Quarter dBm units to mW * Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153 * Table is offset so the last entry is largest mW value that fits in * a uint16. */ #define QDBM_OFFSET 153 /* Offset for first entry */ #define QDBM_TABLE_LEN 40 /* Table size */ /* Smallest mW value that will round up to the first table entry, QDBM_OFFSET. * Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2 */ #define QDBM_TABLE_LOW_BOUND 6493 /* Low bound */ /* Largest mW value that will round down to the last table entry, * QDBM_OFFSET + QDBM_TABLE_LEN-1. * Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) + mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2. */ #define QDBM_TABLE_HIGH_BOUND 64938 /* High bound */ static const uint16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = { /* qdBm: +0 +1 +2 +3 +4 +5 +6 +7 */ /* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000, /* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849, /* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119, /* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811, /* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096 }; uint16 BCMROMFN(bcm_qdbm_to_mw)(uint8 qdbm) { uint factor = 1; int idx = qdbm - QDBM_OFFSET; if (idx > QDBM_TABLE_LEN) { /* clamp to max uint16 mW value */ return 0xFFFF; } /* scale the qdBm index up to the range of the table 0-40 * where an offset of 40 qdBm equals a factor of 10 mW. */ while (idx < 0) { idx += 40; factor *= 10; } /* return the mW value scaled down to the correct factor of 10, * adding in factor/2 to get proper rounding. */ return ((nqdBm_to_mW_map[idx] + factor/2) / factor); } uint8 BCMROMFN(bcm_mw_to_qdbm)(uint16 mw) { uint8 qdbm; int offset; uint mw_uint = mw; uint boundary; /* handle boundary case */ if (mw_uint <= 1) return 0; offset = QDBM_OFFSET; /* move mw into the range of the table */ while (mw_uint < QDBM_TABLE_LOW_BOUND) { mw_uint *= 10; offset -= 40; } for (qdbm = 0; qdbm < QDBM_TABLE_LEN-1; qdbm++) { boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm+1] - nqdBm_to_mW_map[qdbm])/2; if (mw_uint < boundary) break; } qdbm += (uint8)offset; return (qdbm); } uint BCMROMFN(bcm_bitcount)(uint8 *bitmap, uint length) { uint bitcount = 0, i; uint8 tmp; for (i = 0; i < length; i++) { tmp = bitmap[i]; while (tmp) { bitcount++; tmp &= (tmp - 1); } } return bitcount; } #ifdef BCMDRIVER /* Initialization of bcmstrbuf structure */ void bcm_binit(struct bcmstrbuf *b, char *buf, uint size) { b->origsize = b->size = size; b->origbuf = b->buf = buf; } /* Buffer sprintf wrapper to guard against buffer overflow */ int bcm_bprintf(struct bcmstrbuf *b, const char *fmt, ...) { va_list ap; int r; va_start(ap, fmt); r = vsnprintf(b->buf, b->size, fmt, ap); /* Non Ansi C99 compliant returns -1, * Ansi compliant return r >= b->size, * bcmstdlib returns 0, handle all */ if ((r == -1) || (r >= (int)b->size) || (r == 0)) { b->size = 0; } else { b->size -= r; b->buf += r; } va_end(ap); return r; } #endif /* BCMDRIVER */