On 03/07/16(Sun) 15:23, Stefan Sperling wrote:
> For hostap interfaces, ifconfig scan currently shows the maximum supported
> Rx Rate or RX MCS of associated stations. E.g. for an iwn(4) device associated
> to an athn(4) AP in 11g mode, the AP will show 'HT-MCS7' in ifconfig scan:
>
> # ifconfig athn0 scan | grep 34:13:e8:d0:60:a9
> lladdr 34:13:e8:d0:60:a9 77dBm HT-MCS7 short_preamble,short_slottime assoc
>
> It shows that 'HT-MCS7' is the maximum supported rate by iwn(4).
> Showing the maximum supported rate makes sense when searching for APs.
> But on an AP it is more useful to show the current Tx rate our AP is
> using to send frames to the associated node.
> The diff below implements this, and we get:
>
> # ifconfig athn0 scan | grep 34:13:e8:d0:60:a9
> lladdr 34:13:e8:d0:60:a9 80dBm 24M short_preamble,short_slottime assoc
>
> Requires ifconfig to be recompiled to run on the new kernel.
I like this, it is in my opinion more user-friendly.
> Index: sbin/ifconfig/ifconfig.c
> ===================================================================
> RCS file: /cvs/src/sbin/ifconfig/ifconfig.c,v
> retrieving revision 1.324
> diff -u -p -r1.324 ifconfig.c
> --- sbin/ifconfig/ifconfig.c 15 Jun 2016 19:39:33 -0000 1.324
> +++ sbin/ifconfig/ifconfig.c 3 Jul 2016 12:59:05 -0000
> @@ -2341,8 +2341,19 @@ ieee80211_printnode(struct ieee80211_nod
>
> if (nr->nr_pwrsave)
> printf("powersave ");
> - /* Only print the fastest rate */
> - if (nr->nr_max_rxrate) {
> + /*
> + * Print our current Tx rate for associated nodes.
> + * Print the fastest supported rate for APs.
> + */
> + if ((nr->nr_flags & (IEEE80211_NODEREQ_AP)) == 0) {
> + if (nr->nr_flags & IEEE80211_NODEREQ_HT) {
> + printf("HT-MCS%d ", nr->nr_txmcs);
> + } else if (nr->nr_rates) {
> + printf("%uM ",
> + (nr->nr_rates[nr->nr_txrate] & IEEE80211_RATE_VAL)
> + / 2);
> + }
> + } else if (nr->nr_max_rxrate) {
> printf("%uM HT ", nr->nr_max_rxrate);
> } else if (nr->nr_rxmcs[0] != 0) {
> for (i = IEEE80211_HT_NUM_MCS - 1; i >= 0; i--) {
> @@ -2351,9 +2362,8 @@ ieee80211_printnode(struct ieee80211_nod
> }
> printf("HT-MCS%d ", i);
> } else if (nr->nr_nrates) {
> - printf("%uM",
> + printf("%uM ",
> (nr->nr_rates[nr->nr_nrates - 1] & IEEE80211_RATE_VAL) / 2);
> - putchar(' ');
> }
> /* ESS is the default, skip it */
> nr->nr_capinfo &= ~IEEE80211_CAPINFO_ESS;
> Index: sys/net80211/ieee80211_ioctl.c
> ===================================================================
> RCS file: /cvs/src/sys/net80211/ieee80211_ioctl.c,v
> retrieving revision 1.41
> diff -u -p -r1.41 ieee80211_ioctl.c
> --- sys/net80211/ieee80211_ioctl.c 28 Apr 2016 13:50:14 -0000 1.41
> +++ sys/net80211/ieee80211_ioctl.c 3 Jul 2016 13:00:32 -0000
> @@ -112,6 +112,9 @@ ieee80211_node2req(struct ieee80211com *
> memcpy(nr->nr_rxmcs, ni->ni_rxmcs, sizeof(nr->nr_rxmcs));
> nr->nr_max_rxrate = ni->ni_max_rxrate;
> nr->nr_tx_mcs_set = ni->ni_tx_mcs_set;
> + nr->nr_txmcs = ni->ni_txmcs;
> + if (ni->ni_flags & IEEE80211_NODE_HT)
> + nr->nr_flags |= IEEE80211_NODEREQ_HT;
> }
>
> void
> Index: sys/net80211/ieee80211_ioctl.h
> ===================================================================
> RCS file: /cvs/src/sys/net80211/ieee80211_ioctl.h,v
> retrieving revision 1.26
> diff -u -p -r1.26 ieee80211_ioctl.h
> --- sys/net80211/ieee80211_ioctl.h 28 Apr 2016 14:46:10 -0000 1.26
> +++ sys/net80211/ieee80211_ioctl.h 3 Jul 2016 12:58:58 -0000
> @@ -339,6 +339,7 @@ struct ieee80211_nodereq {
> uint8_t nr_rxmcs[howmany(80,NBBY)];
> uint16_t nr_max_rxrate; /* in Mb/s, 0 <= rate <= 1023 */
> uint8_t nr_tx_mcs_set;
> + uint8_t nr_txmcs;
> };
>
> #define IEEE80211_NODEREQ_STATE(_s) (1 << _s)
> @@ -352,6 +353,7 @@ struct ieee80211_nodereq {
> #define IEEE80211_NODEREQ_AP 0x01 /* access point */
> #define IEEE80211_NODEREQ_AP_BSS 0x02 /* current bss access point */
> #define IEEE80211_NODEREQ_COPY 0x04 /* add node with flags
> */
> +#define IEEE80211_NODEREQ_HT 0x08 /* HT negotiated */
>
> #define SIOCG80211NODE _IOWR('i', 211, struct
> ieee80211_nodereq)
> #define SIOCS80211NODE _IOW('i', 212, struct
> ieee80211_nodereq)
>
