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Revert "libertas: Read buffer overflow"
This reverts commit 57921c312e
.
On request from John Linville:
It has been shown to create a new problem. There is work
towards a solution to that one, but it isn't a simple
clean-up.
Signed-off-by: David S. Miller <davem@davemloft.net>
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parent
e9d126cdfa
commit
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@ -1,7 +1,6 @@
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/* Copyright (C) 2006, Red Hat, Inc. */
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/etherdevice.h>
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#include <linux/ieee80211.h>
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#include <linux/if_arp.h>
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@ -44,21 +43,21 @@ static int get_common_rates(struct lbs_private *priv,
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u16 *rates_size)
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{
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u8 *card_rates = lbs_bg_rates;
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size_t num_card_rates = sizeof(lbs_bg_rates);
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int ret = 0, i, j;
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u8 tmp[(ARRAY_SIZE(lbs_bg_rates) - 1) * (*rates_size - 1)];
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u8 tmp[30];
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size_t tmp_size = 0;
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/* For each rate in card_rates that exists in rate1, copy to tmp */
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for (i = 0; i < ARRAY_SIZE(lbs_bg_rates) && card_rates[i]; i++) {
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for (j = 0; j < *rates_size && rates[j]; j++) {
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for (i = 0; card_rates[i] && (i < num_card_rates); i++) {
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for (j = 0; rates[j] && (j < *rates_size); j++) {
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if (rates[j] == card_rates[i])
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tmp[tmp_size++] = card_rates[i];
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}
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}
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lbs_deb_hex(LBS_DEB_JOIN, "AP rates ", rates, *rates_size);
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lbs_deb_hex(LBS_DEB_JOIN, "card rates ", card_rates,
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ARRAY_SIZE(lbs_bg_rates));
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lbs_deb_hex(LBS_DEB_JOIN, "card rates ", card_rates, num_card_rates);
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lbs_deb_hex(LBS_DEB_JOIN, "common rates", tmp, tmp_size);
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lbs_deb_join("TX data rate 0x%02x\n", priv->cur_rate);
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@ -70,7 +69,10 @@ static int get_common_rates(struct lbs_private *priv,
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lbs_pr_alert("Previously set fixed data rate %#x isn't "
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"compatible with the network.\n", priv->cur_rate);
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ret = -1;
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goto done;
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}
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ret = 0;
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done:
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memset(rates, 0, *rates_size);
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*rates_size = min_t(int, tmp_size, *rates_size);
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@ -320,7 +322,7 @@ static int lbs_associate(struct lbs_private *priv,
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rates = (struct mrvl_ie_rates_param_set *) pos;
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rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
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memcpy(&rates->rates, &bss->rates, MAX_RATES);
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tmplen = min_t(u16, ARRAY_SIZE(rates->rates), MAX_RATES);
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tmplen = MAX_RATES;
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if (get_common_rates(priv, rates->rates, &tmplen)) {
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ret = -1;
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goto done;
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@ -596,7 +598,7 @@ static int lbs_adhoc_join(struct lbs_private *priv,
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/* Copy Data rates from the rates recorded in scan response */
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memset(cmd.bss.rates, 0, sizeof(cmd.bss.rates));
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ratesize = min_t(u16, ARRAY_SIZE(cmd.bss.rates), MAX_RATES);
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ratesize = min_t(u16, sizeof(cmd.bss.rates), MAX_RATES);
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memcpy(cmd.bss.rates, bss->rates, ratesize);
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if (get_common_rates(priv, cmd.bss.rates, &ratesize)) {
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lbs_deb_join("ADHOC_JOIN: get_common_rates returned error.\n");
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