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