| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/ctype.h> |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <bcmdefs.h> |
| #include <stdarg.h> |
| #include <osl.h> |
| #include <linuxver.h> |
| #include <bcmutils.h> |
| #include <siutils.h> |
| #include <bcmnvram.h> |
| #include <bcmendian.h> |
| #include <bcmdevs.h> |
| #include <proto/ethernet.h> |
| #include <proto/802.1d.h> |
| #include <proto/802.11.h> |
| |
| |
| /* copy a buffer into a pkt buffer chain */ |
| uint pktfrombuf(osl_t *osh, void *p, uint offset, int len, unsigned char *buf) |
| { |
| uint n, ret = 0; |
| |
| /* skip 'offset' bytes */ |
| for (; p && offset; p = PKTNEXT(p)) { |
| if (offset < (uint) PKTLEN(p)) |
| break; |
| offset -= PKTLEN(p); |
| } |
| |
| if (!p) |
| return 0; |
| |
| /* copy the data */ |
| for (; p && len; p = PKTNEXT(p)) { |
| n = min((uint) PKTLEN(p) - offset, (uint) len); |
| bcopy(buf, PKTDATA(p) + offset, n); |
| buf += n; |
| len -= n; |
| ret += n; |
| offset = 0; |
| } |
| |
| return ret; |
| } |
| /* return total length of buffer chain */ |
| uint BCMFASTPATH pkttotlen(osl_t *osh, void *p) |
| { |
| uint total; |
| |
| total = 0; |
| for (; p; p = PKTNEXT(p)) |
| total += PKTLEN(p); |
| return total; |
| } |
| |
| /* |
| * osl multiple-precedence packet queue |
| * hi_prec is always >= the number of the highest non-empty precedence |
| */ |
| void *BCMFASTPATH 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 = (u8) prec; |
| |
| return p; |
| } |
| |
| void *BCMFASTPATH 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 = (u8) prec; |
| |
| return p; |
| } |
| |
| void *BCMFASTPATH pktq_pdeq(struct pktq *pq, int prec) |
| { |
| struct pktq_prec *q; |
| void *p; |
| |
| ASSERT(prec >= 0 && prec < pq->num_prec); |
| |
| q = &pq->q[prec]; |
| |
| p = q->head; |
| if (p == NULL) |
| return NULL; |
| |
| q->head = PKTLINK(p); |
| if (q->head == NULL) |
| q->tail = NULL; |
| |
| q->len--; |
| |
| pq->len--; |
| |
| PKTSETLINK(p, NULL); |
| |
| return p; |
| } |
| |
| void *BCMFASTPATH 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]; |
| |
| p = q->head; |
| if (p == 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; |
| } |
| |
| #ifdef BRCM_FULLMAC |
| 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; |
| } |
| |
| 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); |
| } |
| #else /* !BRCM_FULLMAC */ |
| void |
| pktq_pflush(osl_t *osh, struct pktq *pq, int prec, bool dir, ifpkt_cb_t fn, |
| int arg) |
| { |
| struct pktq_prec *q; |
| void *p, *prev = NULL; |
| |
| q = &pq->q[prec]; |
| p = q->head; |
| while (p) { |
| if (fn == NULL || (*fn) (p, arg)) { |
| bool head = (p == q->head); |
| if (head) |
| q->head = PKTLINK(p); |
| else |
| PKTSETLINK(prev, PKTLINK(p)); |
| PKTSETLINK(p, NULL); |
| PKTFREE(osh, p, dir); |
| q->len--; |
| pq->len--; |
| p = (head ? q->head : PKTLINK(prev)); |
| } else { |
| prev = p; |
| p = PKTLINK(p); |
| } |
| } |
| |
| if (q->head == NULL) { |
| ASSERT(q->len == 0); |
| q->tail = NULL; |
| } |
| } |
| |
| void pktq_flush(osl_t *osh, struct pktq *pq, bool dir, ifpkt_cb_t fn, int arg) |
| { |
| int prec; |
| for (prec = 0; prec < pq->num_prec; prec++) |
| pktq_pflush(osh, pq, prec, dir, fn, arg); |
| if (fn == NULL) |
| ASSERT(pq->len == 0); |
| } |
| #endif /* BRCM_FULLMAC */ |
| |
| 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 = (u16) num_prec; |
| |
| pq->max = (u16) max_len; |
| |
| for (prec = 0; prec < num_prec; prec++) |
| pq->q[prec].max = pq->max; |
| } |
| |
| 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; |
| } |
| |
| /* 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 *BCMFASTPATH 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]; |
| |
| p = q->head; |
| if (p == NULL) |
| return NULL; |
| |
| q->head = PKTLINK(p); |
| if (q->head == NULL) |
| q->tail = NULL; |
| |
| q->len--; |
| |
| if (prec_out) |
| *prec_out = prec; |
| |
| pq->len--; |
| |
| PKTSETLINK(p, NULL); |
| |
| return p; |
| } |
| |
| /* parse a xx:xx:xx:xx:xx:xx format ethernet address */ |
| int bcm_ether_atoe(char *p, struct ether_addr *ea) |
| { |
| int i = 0; |
| |
| for (;;) { |
| ea->octet[i++] = (char)simple_strtoul(p, &p, 16); |
| if (!*p++ || i == 6) |
| break; |
| } |
| |
| return i == 6; |
| } |
| |
| /* |
| * 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) |
| { |
| 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;) { |
| if ((bcmp(s, name, len) == 0) && (s[len] == '=')) |
| return &s[len + 1]; |
| |
| while (*s++) |
| ; |
| } |
| #ifdef BRCM_FULLMAC |
| return NULL; |
| #else |
| /* then query nvram */ |
| return nvram_get(name); |
| #endif |
| } |
| |
| /* |
| * 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) |
| { |
| char *val; |
| |
| val = getvar(vars, name); |
| if (val == NULL) |
| return 0; |
| |
| return simple_strtoul(val, NULL, 0); |
| } |
| |
| #if defined(BCMDBG) |
| /* pretty hex print a pkt buffer chain */ |
| void prpkt(const char *msg, osl_t *osh, void *p0) |
| { |
| void *p; |
| |
| if (msg && (msg[0] != '\0')) |
| printf("%s:\n", msg); |
| |
| for (p = p0; p; p = PKTNEXT(p)) |
| prhex(NULL, PKTDATA(p), PKTLEN(p)); |
| } |
| #endif /* defined(BCMDBG) */ |
| |
| 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) == (ARRAY_SIZE(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]; |
| } |
| |
| /* 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 != NULL); |
| |
| 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 s32 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; |
| } |
| |
| /******************************************************************************* |
| * 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 u8 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]) |
| |
| u8 hndcrc8(u8 *pdata, /* pointer to array of data to process */ |
| uint nbytes, /* number of input data bytes to process */ |
| u8 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 (u8 >> 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 u16 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 |
| }; |
| |
| u16 hndcrc16(u8 *pdata, /* pointer to array of data to process */ |
| uint nbytes, /* number of input data bytes to process */ |
| u16 crc /* either CRC16_INIT_VALUE or previous return value */ |
| ) { |
| while (nbytes-- > 0) |
| CRC_INNER_LOOP(16, crc, *pdata++); |
| return crc; |
| } |
| |
| static const u32 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 |
| }; |
| |
| u32 hndcrc32(u8 *pdata, /* pointer to array of data to process */ |
| uint nbytes, /* number of input data bytes to process */ |
| u32 crc /* either CRC32_INIT_VALUE or previous |
| return value */ |
| ) |
| { |
| u8 *pend; |
| #ifdef __mips__ |
| u8 tmp[4]; |
| unsigned long *tptr = (unsigned long *) tmp; |
| |
| /* in case the beginning of the buffer isn't aligned */ |
| pend = (u8 *) ((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 = *(unsigned long *) pdata; |
| pdata += sizeof(unsigned long *); |
| 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; |
| } |
| /* |
| * 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 *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 *) ((u8 *) elt + (len + 2)); |
| totlen -= (len + 2); |
| } |
| |
| return NULL; |
| } |
| |
| |
| #if defined(BCMDBG) |
| int |
| bcm_format_flags(const bcm_bit_desc_t *bd, u32 flags, char *buf, int len) |
| { |
| int i; |
| char *p = buf; |
| char hexstr[16]; |
| int slen = 0, nlen = 0; |
| u32 bit; |
| const char *name; |
| |
| if (len < 2 || !buf) |
| return 0; |
| |
| buf[0] = '\0'; |
| |
| for (i = 0; flags != 0; i++) { |
| bit = bd[i].bit; |
| name = bd[i].name; |
| if (bit == 0 && flags != 0) { |
| /* print any unnamed bits */ |
| snprintf(hexstr, 16, "0x%X", flags); |
| name = hexstr; |
| flags = 0; /* exit loop */ |
| } else if ((flags & bit) == 0) |
| continue; |
| flags &= ~bit; |
| nlen = strlen(name); |
| slen += nlen; |
| /* count btwn flag space */ |
| if (flags != 0) |
| slen += 1; |
| /* need NULL char as well */ |
| if (len <= slen) |
| break; |
| /* copy NULL char but don't count it */ |
| strncpy(p, name, nlen + 1); |
| p += nlen; |
| /* copy btwn flag space and NULL char */ |
| if (flags != 0) |
| p += snprintf(p, 2, " "); |
| len -= slen; |
| } |
| |
| /* indicate the str was too short */ |
| if (flags != 0) { |
| if (len < 2) |
| p -= 2 - len; /* overwrite last char */ |
| p += snprintf(p, 2, ">"); |
| } |
| |
| return (int)(p - buf); |
| } |
| |
| /* print bytes formatted as hex to a string. return the resulting string length */ |
| int bcm_format_hex(char *str, const void *bytes, int len) |
| { |
| int i; |
| char *p = str; |
| const u8 *src = (const u8 *)bytes; |
| |
| for (i = 0; i < len; i++) { |
| p += snprintf(p, 3, "%02X", *src); |
| src++; |
| } |
| return (int)(p - str); |
| } |
| #endif /* defined(BCMDBG) */ |
| |
| /* pretty hex print a contiguous buffer */ |
| void prhex(const char *msg, unsigned char *buf, uint nbytes) |
| { |
| char line[128], *p; |
| int len = sizeof(line); |
| int nchar; |
| uint i; |
| |
| if (msg && (msg[0] != '\0')) |
| printf("%s:\n", msg); |
| |
| p = line; |
| for (i = 0; i < nbytes; i++) { |
| if (i % 16 == 0) { |
| nchar = snprintf(p, len, " %04d: ", i); /* line prefix */ |
| p += nchar; |
| len -= nchar; |
| } |
| if (len > 0) { |
| nchar = snprintf(p, len, "%02x ", buf[i]); |
| p += nchar; |
| len -= nchar; |
| } |
| |
| if (i % 16 == 15) { |
| printf("%s\n", line); /* flush line */ |
| p = line; |
| len = sizeof(line); |
| } |
| } |
| |
| /* flush last partial line */ |
| if (p != line) |
| printf("%s\n", line); |
| } |
| |
| char *bcm_chipname(uint chipid, char *buf, uint len) |
| { |
| const char *fmt; |
| |
| fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x"; |
| snprintf(buf, len, fmt, chipid); |
| return buf; |
| } |
| |
| 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 u16. |
| */ |
| |
| #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 u16 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 |
| }; |
| |
| u16 bcm_qdbm_to_mw(u8 qdbm) |
| { |
| uint factor = 1; |
| int idx = qdbm - QDBM_OFFSET; |
| |
| if (idx >= QDBM_TABLE_LEN) { |
| /* clamp to max u16 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; |
| } |
| u8 bcm_mw_to_qdbm(u16 mw) |
| { |
| u8 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 += (u8) offset; |
| |
| return qdbm; |
| } |
| uint bcm_bitcount(u8 *bitmap, uint length) |
| { |
| uint bitcount = 0, i; |
| u8 tmp; |
| for (i = 0; i < length; i++) { |
| tmp = bitmap[i]; |
| while (tmp) { |
| bitcount++; |
| tmp &= (tmp - 1); |
| } |
| } |
| return bitcount; |
| } |
| /* 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; |
| } |
| |