/* given a chanspec and a string buffer, format the chanspec as a * string, and return the original pointer a. * Min buffer length must be CHANSPEC_STR_LEN. * On error return NULL */ char * wf_chspec_ntoa(chanspec_t chspec, char *buf) { const char *band; uint ctl_chan; if (wf_chspec_malformed(chspec)) return NULL; band = ""; /* check for non-default band spec */ if ((CHSPEC_IS2G(chspec) && CHSPEC_CHANNEL(chspec) > CH_MAX_2G_CHANNEL) || (CHSPEC_IS5G(chspec) && CHSPEC_CHANNEL(chspec) <= CH_MAX_2G_CHANNEL)) band = (CHSPEC_IS2G(chspec)) ? "2g" : "5g"; /* ctl channel */ ctl_chan = wf_chspec_ctlchan(chspec); /* bandwidth and ctl sideband */ if (CHSPEC_IS20(chspec)) { snprintf(buf, CHANSPEC_STR_LEN, "%s%d", band, ctl_chan); } else if (!CHSPEC_IS8080(chspec)) { const char *bw; const char *sb = ""; bw = wf_chspec_bw_str[(chspec & WL_CHANSPEC_BW_MASK) >> WL_CHANSPEC_BW_SHIFT]; #ifdef CHANSPEC_NEW_40MHZ_FORMAT /* ctl sideband string if needed for 2g 40MHz */ if (CHSPEC_IS40(chspec) && CHSPEC_IS2G(chspec)) { sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l"; } snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s%s", band, ctl_chan, bw, sb); #else /* ctl sideband string instead of BW for 40MHz */ if (CHSPEC_IS40(chspec)) { sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l"; snprintf(buf, CHANSPEC_STR_LEN, "%s%d%s", band, ctl_chan, sb); } else { snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s", band, ctl_chan, bw); } #endif /* CHANSPEC_NEW_40MHZ_FORMAT */ } else {
char * wf_chspec_ntoa(chanspec_t chspec, char *buf) { const char *band; uint ctl_chan; if (wf_chspec_malformed(chspec)) return NULL; band = ""; if ((CHSPEC_IS2G(chspec) && CHSPEC_CHANNEL(chspec) > CH_MAX_2G_CHANNEL) || (CHSPEC_IS5G(chspec) && CHSPEC_CHANNEL(chspec) <= CH_MAX_2G_CHANNEL)) band = (CHSPEC_IS2G(chspec)) ? "2g" : "5g"; ctl_chan = wf_chspec_ctlchan(chspec); if (CHSPEC_IS20(chspec)) { snprintf(buf, CHANSPEC_STR_LEN, "%s%d", band, ctl_chan); } else if (!CHSPEC_IS8080(chspec)) { const char *bw; const char *sb = ""; bw = wf_chspec_bw_str[(chspec & WL_CHANSPEC_BW_MASK) >> WL_CHANSPEC_BW_SHIFT]; #ifdef CHANSPEC_NEW_40MHZ_FORMAT if (CHSPEC_IS40(chspec) && CHSPEC_IS2G(chspec)) { sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l"; } snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s%s", band, ctl_chan, bw, sb); #else if (CHSPEC_IS40(chspec)) { sb = CHSPEC_SB_UPPER(chspec) ? "u" : "l"; snprintf(buf, CHANSPEC_STR_LEN, "%s%d%s", band, ctl_chan, sb); } else { snprintf(buf, CHANSPEC_STR_LEN, "%s%d/%s", band, ctl_chan, bw); } #endif } else {