madwifi: don't crash if the static rate is not in a per-node rateset

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@12713 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/patches/379-invalid_rate_fix.patch b/package/madwifi/patches/379-invalid_rate_fix.patch
new file mode 100644 (file)
index 0000000..0128ca2
--- /dev/null
+++ b/package/madwifi/patches/379-invalid_rate_fix.patch
@@ -0,0 +1,200 @@
+--- a/ath_rate/minstrel/minstrel.c
++++ b/ath_rate/minstrel/minstrel.c
+@@ -111,27 +111,13 @@
+ #include <net80211/ieee80211_var.h>
+ #include <net80211/ieee80211_rate.h>
+ 
++#include "if_ath_debug.h"
+ #include "if_athvar.h"
+ #include "if_ath_hal.h"
+ #include "ah_desc.h"
+ 
+ #include "minstrel.h"
+ 
+-#ifdef AR_DEBUG
+-#define       MINSTREL_DEBUG
+-#endif
+-#ifdef MINSTREL_DEBUG
+-enum {
+-              ATH_DEBUG_RATE          = 0x00000010    /* rate control */
+-};
+-#define       DPRINTF(sc, _fmt, ...) do {             \
+-              if (sc->sc_debug & ATH_DEBUG_RATE)      \
+-                      printk(_fmt, __VA_ARGS__);              \
+-} while (0)
+-#else
+-#define       DPRINTF(sc, _fmt, ...)
+-#endif
+-
+ #define ONE_SECOND (1000 * 1000)  /* 1 second, or 1000 milliseconds; eternity, in other words */
+ 
+ #include "release.h"
+@@ -689,17 +675,17 @@
+                        * the node.  We know the rate is there because the
+                        * rate set is checked when the station associates. */
+                       /* NB: the rate set is assumed sorted */
+-                      for (; (srate >= 0) && (ni->ni_rates.rs_rates[srate] & IEEE80211_RATE_VAL) != vap->iv_fixed_rate; srate--);
+-
+-                      KASSERT(srate >= 0,
+-                              ("fixed rate %d not in rate set", vap->iv_fixed_rate));
++                      for (; (srate > 0) && (ni->ni_rates.rs_rates[srate] & IEEE80211_RATE_VAL) != vap->iv_fixed_rate; srate--);
+ 
+                       sn->static_rate_ndx = srate;
+                       ni->ni_txrate = srate;
+-                      DPRINTF(sc, "%s: %s " MAC_FMT " fixed rate %d%sMbps\n",
+-                              dev_info, __func__, MAC_ADDR(ni->ni_macaddr),
+-                              sn->rates[srate].rate / 2,
+-                              (sn->rates[srate].rate % 2) ? ".5 " : " ");
++                      if ((ni->ni_rates.rs_rates[srate] & IEEE80211_RATE_VAL) != vap->iv_fixed_rate)
++                              EPRINTF(sc, "Invalid static rate, falling back to basic rate\n");
++                      else
++                              DPRINTF(sc, "%s: %s " MAC_FMT " fixed rate %d%sMbps\n",
++                                      dev_info, __func__, MAC_ADDR(ni->ni_macaddr),
++                                      sn->rates[srate].rate / 2,
++                                      (sn->rates[srate].rate % 2) ? ".5 " : " ");
+                       return;
+               }
+ 
+--- a/ath_rate/amrr/amrr.c
++++ b/ath_rate/amrr/amrr.c
+@@ -64,24 +64,13 @@
+ #include <net80211/ieee80211_var.h>
+ #include <net80211/ieee80211_rate.h>
+ 
++#include "if_ath_debug.h"
+ #include "if_athvar.h"
+ #include "if_ath_hal.h"
+ #include "ah_desc.h"
+ 
+ #include "amrr.h"
+ 
+-#ifdef AR_DEBUG
+-#define       AMRR_DEBUG
+-#endif
+-#ifdef AMRR_DEBUG
+-#define       DPRINTF(sc, _fmt, ...) do {                                     \
+-      if (sc->sc_debug & 0x10)                                        \
+-              printk(_fmt, __VA_ARGS__);                              \
+-} while (0)
+-#else
+-#define       DPRINTF(sc, _fmt, ...)
+-#endif
+-
+ static int ath_rateinterval = 1000;           /* rate ctl interval (ms)  */
+ static int ath_rate_max_success_threshold = 10;
+ static int ath_rate_min_success_threshold = 1;
+@@ -297,9 +286,9 @@
+                * rate set is checked when the station associates.
+                */
+               srate = ni->ni_rates.rs_nrates - 1;
+-              for (; srate >= 0 && RATE(srate) != vap->iv_fixed_rate; srate--);
+-              KASSERT(srate >= 0,
+-                      ("fixed rate %d not in rate set", vap->iv_fixed_rate));
++              for (; srate > 0 && RATE(srate) != vap->iv_fixed_rate; srate--);
++              if (RATE(srate) != vap->iv_fixed_rate)
++                      EPRINTF(sc, "Invalid static rate, falling back to basic rate\n");
+       }
+       ath_rate_update(sc, ni, srate);
+ #undef RATE
+--- a/ath_rate/onoe/onoe.c
++++ b/ath_rate/onoe/onoe.c
+@@ -60,27 +60,13 @@
+ #include <net80211/ieee80211_var.h>
+ #include <net80211/ieee80211_rate.h>
+ 
++#include "if_ath_debug.h"
+ #include "if_athvar.h"
+ #include "if_ath_hal.h"
+ #include "ah_desc.h"
+ 
+ #include "onoe.h"
+ 
+-#ifdef AR_DEBUG
+-#define       ONOE_DEBUG
+-#endif
+-#ifdef ONOE_DEBUG
+-enum {
+-      ATH_DEBUG_RATE  = 0x00000010,   /* rate control */
+-};
+-#define       DPRINTF(sc, _fmt, ...) do {                             \
+-      if (sc->sc_debug & ATH_DEBUG_RATE)                      \
+-              printk(_fmt, __VA_ARGS__);                      \
+-} while (0)
+-#else
+-#define       DPRINTF(sc, _fmt, ...)
+-#endif
+-
+ /*
+  * Default parameters for the rate control algorithm.  These are
+  * all tunable with sysctls.  The rate controller runs periodically
+@@ -283,9 +269,9 @@
+                */
+               /* NB: the rate set is assumed sorted */
+               srate = ni->ni_rates.rs_nrates - 1;
+-              for (; srate >= 0 && RATE(srate) != vap->iv_fixed_rate; srate--);
+-              KASSERT(srate >= 0,
+-                      ("fixed rate %d not in rate set", vap->iv_fixed_rate));
++              for (; srate > 0 && RATE(srate) != vap->iv_fixed_rate; srate--);
++              if (RATE(srate) != vap->iv_fixed_rate)
++                      EPRINTF(sc, "Invalid static rate, falling back to basic rate\n");
+       }
+       ath_rate_update(sc, ni, srate);
+ #undef RATE
+--- a/ath_rate/sample/sample.c
++++ b/ath_rate/sample/sample.c
+@@ -62,30 +62,13 @@
+ #include <net80211/ieee80211_var.h>
+ #include <net80211/ieee80211_rate.h>
+ 
++#include "if_ath_debug.h"
+ #include "if_athvar.h"
+ #include "if_ath_hal.h"
+ #include "ah_desc.h"
+ 
+ #include "sample.h"
+ 
+-#ifdef AR_DEBUG
+-#define SAMPLE_DEBUG
+-#endif
+-#ifdef SAMPLE_DEBUG
+-enum {
+-      ATH_DEBUG_RATE          = 0x00000010,   /* rate control */
+-      ATH_DEBUG_ANY           = 0xffffffff
+-};
+-#define       DPRINTF(sc, m, fmt, ...) do {                           \
+-      if (sc->sc_debug & (m))                                 \
+-              printk(fmt, __VA_ARGS__);                       \
+-} while (0)
+-#else
+-#define       DPRINTF(sc, m, fmt, ...) do {                           \
+-      (void) sc;                                              \
+-} while (0)
+-#endif
+-
+ /*
+  * This file is an implementation of the SampleRate algorithm
+  * in "Bit-rate Selection in Wireless Networks"
+@@ -886,15 +869,16 @@
+                       if ((ni->ni_rates.rs_rates[x] & IEEE80211_RATE_VAL) == vap->iv_fixed_rate)
+                               srate = x;
+ 
+-              KASSERT(((ni->ni_rates.rs_rates[srate] & IEEE80211_RATE_VAL) == vap->iv_fixed_rate),
+-                      ("fixed rate %u not in rate set", vap->iv_fixed_rate));
+-
+               sn->static_rate_ndx = srate;
+               ni->ni_txrate = srate;
+-              DPRINTF(sc, ATH_DEBUG_RATE, "%s: %s " MAC_FMT " fixed rate %u%sMbps\n",
+-                      dev_info, __func__, MAC_ADDR(ni->ni_macaddr),
+-                      sn->rates[srate].rate / 2,
+-                      (sn->rates[srate].rate % 0x1) ? ".5" : " ");
++
++              if ((ni->ni_rates.rs_rates[srate] & IEEE80211_RATE_VAL) != vap->iv_fixed_rate)
++                      EPRINTF(sc, "Invalid static rate, falling back to basic rate\n");
++              else
++                      DPRINTF(sc, ATH_DEBUG_RATE, "%s: %s " MAC_FMT " fixed rate %u%sMbps\n",
++                              dev_info, __func__, MAC_ADDR(ni->ni_macaddr),
++                              sn->rates[srate].rate / 2,
++                              (sn->rates[srate].rate % 0x1) ? ".5" : " ");
+               return;
+       }
+