269 lines
6.6 KiB
C
269 lines
6.6 KiB
C
#include <errno.h>
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#include "nl80211.h"
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#include "iw.h"
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static int parse_vht_chunk(const char *arg, __u8 *nss, __u16 *mcs)
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{
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int count, i;
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unsigned int inss, mcs_start, mcs_end, tab[10];
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*nss = 0; *mcs = 0;
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if (strchr(arg, '-')) {
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/* Format: NSS:MCS_START-MCS_END */
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count = sscanf(arg, "%u:%u-%u", &inss, &mcs_start, &mcs_end);
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if (count != 3)
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return 0;
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if (inss < 1 || inss > NL80211_VHT_NSS_MAX)
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return 0;
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if (mcs_start > mcs_end)
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return 0;
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if (mcs_start > 9 || mcs_end > 9)
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return 0;
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*nss = inss;
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for (i = mcs_start; i <= mcs_end; i++)
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*mcs |= 1 << i;
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} else {
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/* Format: NSS:MCSx,MCSy,... */
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count = sscanf(arg, "%u:%u,%u,%u,%u,%u,%u,%u,%u,%u,%u", &inss,
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&tab[0], &tab[1], &tab[2], &tab[3], &tab[4], &tab[5],
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&tab[6], &tab[7], &tab[8], &tab[9]);
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if (count < 2)
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return 0;
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if (inss < 1 || inss > NL80211_VHT_NSS_MAX)
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return 0;
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*nss = inss;
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for (i = 0; i < count - 1; i++) {
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if (tab[i] > 9)
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return 0;
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*mcs |= 1 << tab[i];
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}
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}
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return 1;
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}
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static int setup_vht(struct nl80211_txrate_vht *txrate_vht,
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int argc, char **argv)
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{
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__u8 nss;
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__u16 mcs;
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int i;
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memset(txrate_vht, 0, sizeof(*txrate_vht));
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for (i = 0; i < argc; i++) {
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if(!parse_vht_chunk(argv[i], &nss, &mcs))
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return 0;
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nss--;
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txrate_vht->mcs[nss] |= mcs;
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}
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return 1;
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}
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#define VHT_ARGC_MAX 100
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static int handle_bitrates(struct nl80211_state *state,
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struct nl_cb *cb,
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struct nl_msg *msg,
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int argc, char **argv,
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enum id_input id)
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{
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struct nlattr *nl_rates, *nl_band;
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int i;
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bool have_legacy_24 = false, have_legacy_5 = false;
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uint8_t legacy_24[32], legacy_5[32];
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int n_legacy_24 = 0, n_legacy_5 = 0;
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uint8_t *legacy = NULL;
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int *n_legacy = NULL;
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bool have_ht_mcs_24 = false, have_ht_mcs_5 = false;
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bool have_vht_mcs_24 = false, have_vht_mcs_5 = false;
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uint8_t ht_mcs_24[77], ht_mcs_5[77];
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int n_ht_mcs_24 = 0, n_ht_mcs_5 = 0;
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struct nl80211_txrate_vht txrate_vht_24 = {};
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struct nl80211_txrate_vht txrate_vht_5 = {};
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uint8_t *mcs = NULL;
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int *n_mcs = NULL;
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char *vht_argv_5[VHT_ARGC_MAX] = {}; char *vht_argv_24[VHT_ARGC_MAX] = {};
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char **vht_argv = NULL;
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int vht_argc_5 = 0; int vht_argc_24 = 0;
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int *vht_argc = NULL;
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int sgi_24 = 0, sgi_5 = 0, lgi_24 = 0, lgi_5 = 0;
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enum {
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S_NONE,
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S_LEGACY,
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S_HT,
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S_VHT,
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S_GI,
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} parser_state = S_NONE;
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for (i = 0; i < argc; i++) {
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char *end;
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double tmpd;
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long tmpl;
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if (strcmp(argv[i], "legacy-2.4") == 0) {
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if (have_legacy_24)
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return 1;
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parser_state = S_LEGACY;
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legacy = legacy_24;
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n_legacy = &n_legacy_24;
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have_legacy_24 = true;
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} else if (strcmp(argv[i], "legacy-5") == 0) {
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if (have_legacy_5)
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return 1;
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parser_state = S_LEGACY;
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legacy = legacy_5;
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n_legacy = &n_legacy_5;
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have_legacy_5 = true;
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}
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else if (strcmp(argv[i], "ht-mcs-2.4") == 0) {
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if (have_ht_mcs_24)
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return 1;
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parser_state = S_HT;
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mcs = ht_mcs_24;
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n_mcs = &n_ht_mcs_24;
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have_ht_mcs_24 = true;
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} else if (strcmp(argv[i], "ht-mcs-5") == 0) {
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if (have_ht_mcs_5)
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return 1;
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parser_state = S_HT;
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mcs = ht_mcs_5;
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n_mcs = &n_ht_mcs_5;
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have_ht_mcs_5 = true;
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} else if (strcmp(argv[i], "vht-mcs-2.4") == 0) {
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if (have_vht_mcs_24)
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return 1;
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parser_state = S_VHT;
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vht_argv = vht_argv_24;
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vht_argc = &vht_argc_24;
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have_vht_mcs_24 = true;
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} else if (strcmp(argv[i], "vht-mcs-5") == 0) {
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if (have_vht_mcs_5)
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return 1;
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parser_state = S_VHT;
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vht_argv = vht_argv_5;
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vht_argc = &vht_argc_5;
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have_vht_mcs_5 = true;
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} else if (strcmp(argv[i], "sgi-2.4") == 0) {
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sgi_24 = 1;
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parser_state = S_GI;
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} else if (strcmp(argv[i], "sgi-5") == 0) {
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sgi_5 = 1;
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parser_state = S_GI;
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} else if (strcmp(argv[i], "lgi-2.4") == 0) {
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lgi_24 = 1;
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parser_state = S_GI;
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} else if (strcmp(argv[i], "lgi-5") == 0) {
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lgi_5 = 1;
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parser_state = S_GI;
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} else switch (parser_state) {
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case S_LEGACY:
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tmpd = strtod(argv[i], &end);
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if (*end != '\0')
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return 1;
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if (tmpd < 1 || tmpd > 255 * 2)
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return 1;
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legacy[(*n_legacy)++] = tmpd * 2;
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break;
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case S_HT:
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tmpl = strtol(argv[i], &end, 0);
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if (*end != '\0')
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return 1;
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if (tmpl < 0 || tmpl > 255)
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return 1;
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mcs[(*n_mcs)++] = tmpl;
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break;
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case S_VHT:
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if (*vht_argc >= VHT_ARGC_MAX)
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return 1;
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vht_argv[(*vht_argc)++] = argv[i];
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break;
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case S_GI:
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break;
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default:
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return 1;
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}
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}
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if (have_vht_mcs_24)
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if(!setup_vht(&txrate_vht_24, vht_argc_24, vht_argv_24))
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return -EINVAL;
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if (have_vht_mcs_5)
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if(!setup_vht(&txrate_vht_5, vht_argc_5, vht_argv_5))
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return -EINVAL;
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if (sgi_5 && lgi_5)
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return 1;
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if (sgi_24 && lgi_24)
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return 1;
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nl_rates = nla_nest_start(msg, NL80211_ATTR_TX_RATES);
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if (!nl_rates)
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goto nla_put_failure;
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if (have_legacy_24 || have_ht_mcs_24 || have_vht_mcs_24 || sgi_24 || lgi_24) {
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nl_band = nla_nest_start(msg, NL80211_BAND_2GHZ);
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if (!nl_band)
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goto nla_put_failure;
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if (have_legacy_24)
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nla_put(msg, NL80211_TXRATE_LEGACY, n_legacy_24, legacy_24);
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if (have_ht_mcs_24)
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nla_put(msg, NL80211_TXRATE_HT, n_ht_mcs_24, ht_mcs_24);
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if (have_vht_mcs_24)
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nla_put(msg, NL80211_TXRATE_VHT, sizeof(txrate_vht_24), &txrate_vht_24);
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if (sgi_24)
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nla_put_u8(msg, NL80211_TXRATE_GI, NL80211_TXRATE_FORCE_SGI);
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if (lgi_24)
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nla_put_u8(msg, NL80211_TXRATE_GI, NL80211_TXRATE_FORCE_LGI);
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nla_nest_end(msg, nl_band);
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}
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if (have_legacy_5 || have_ht_mcs_5 || have_vht_mcs_5 || sgi_5 || lgi_5) {
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nl_band = nla_nest_start(msg, NL80211_BAND_5GHZ);
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if (!nl_band)
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goto nla_put_failure;
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if (have_legacy_5)
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nla_put(msg, NL80211_TXRATE_LEGACY, n_legacy_5, legacy_5);
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if (have_ht_mcs_5)
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nla_put(msg, NL80211_TXRATE_HT, n_ht_mcs_5, ht_mcs_5);
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if (have_vht_mcs_5)
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nla_put(msg, NL80211_TXRATE_VHT, sizeof(txrate_vht_5), &txrate_vht_5);
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if (sgi_5)
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nla_put_u8(msg, NL80211_TXRATE_GI, NL80211_TXRATE_FORCE_SGI);
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if (lgi_5)
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nla_put_u8(msg, NL80211_TXRATE_GI, NL80211_TXRATE_FORCE_LGI);
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nla_nest_end(msg, nl_band);
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}
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nla_nest_end(msg, nl_rates);
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return 0;
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nla_put_failure:
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return -ENOBUFS;
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}
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#define DESCR_LEGACY "[legacy-<2.4|5> <legacy rate in Mbps>*]"
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#define DESCR DESCR_LEGACY " [ht-mcs-<2.4|5> <MCS index>*] [vht-mcs-<2.4|5> <NSS:MCSx,MCSy... | NSS:MCSx-MCSy>*] [sgi-2.4|lgi-2.4] [sgi-5|lgi-5]"
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COMMAND(set, bitrates, "[legacy-<2.4|5> <legacy rate in Mbps>*] [ht-mcs-<2.4|5> <MCS index>*] [vht-mcs-<2.4|5> <NSS:MCSx,MCSy... | NSS:MCSx-MCSy>*] [sgi-2.4|lgi-2.4] [sgi-5|lgi-5]",
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NL80211_CMD_SET_TX_BITRATE_MASK, 0, CIB_NETDEV, handle_bitrates,
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"Sets up the specified rate masks.\n"
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"Not passing any arguments would clear the existing mask (if any).");
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