diff options
| author | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2011-05-30 10:29:37 -0700 |
|---|---|---|
| committer | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2011-06-11 07:08:12 -0700 |
| commit | 49b72100165e3b2046be15a8e4f766f5169e708d (patch) | |
| tree | c609da8bdee7460fc2001654f9e3a93259b94a9e /drivers/net/wireless/iwlwifi/iwl-sv-open.c | |
| parent | 7101f4043cdaa5dc2bf8974313744246f3955de7 (diff) | |
iwlagn: usersapce application decide the size of trace buffer
For testmode trace function, allow userspace application to request the
size of trace buffer.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sv-open.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sv-open.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sv-open.c b/drivers/net/wireless/iwlwifi/iwl-sv-open.c index 69b7e6bf2d6f..135c1b5f25ae 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sv-open.c +++ b/drivers/net/wireless/iwlwifi/iwl-sv-open.c @@ -69,7 +69,6 @@ #include <net/mac80211.h> #include <net/netlink.h> - #include "iwl-dev.h" #include "iwl-core.h" #include "iwl-debug.h" @@ -102,8 +101,10 @@ struct nla_policy iwl_testmode_gnl_msg_policy[IWL_TM_ATTR_MAX] = { [IWL_TM_ATTR_TRACE_ADDR] = { .type = NLA_UNSPEC, }, [IWL_TM_ATTR_TRACE_DATA] = { .type = NLA_UNSPEC, }, + [IWL_TM_ATTR_TRACE_SIZE] = { .type = NLA_U32, }, [IWL_TM_ATTR_FIXRATE] = { .type = NLA_U32, }, + }; /* @@ -185,13 +186,15 @@ static void iwl_trace_cleanup(struct iwl_priv *priv) if (priv->testmode_trace.cpu_addr && priv->testmode_trace.dma_addr) dma_free_coherent(dev, - TRACE_TOTAL_SIZE, + priv->testmode_trace.total_size, priv->testmode_trace.cpu_addr, priv->testmode_trace.dma_addr); priv->testmode_trace.trace_enabled = false; priv->testmode_trace.cpu_addr = NULL; priv->testmode_trace.trace_addr = NULL; priv->testmode_trace.dma_addr = 0; + priv->testmode_trace.buff_size = 0; + priv->testmode_trace.total_size = 0; } } @@ -489,9 +492,22 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) if (priv->testmode_trace.trace_enabled) return -EBUSY; + if (!tb[IWL_TM_ATTR_TRACE_SIZE]) + priv->testmode_trace.buff_size = TRACE_BUFF_SIZE_DEF; + else + priv->testmode_trace.buff_size = + nla_get_u32(tb[IWL_TM_ATTR_TRACE_SIZE]); + if (!priv->testmode_trace.buff_size) + return -EINVAL; + if (priv->testmode_trace.buff_size < TRACE_BUFF_SIZE_MIN || + priv->testmode_trace.buff_size > TRACE_BUFF_SIZE_MAX) + return -EINVAL; + + priv->testmode_trace.total_size = + priv->testmode_trace.buff_size + TRACE_BUFF_PADD; priv->testmode_trace.cpu_addr = dma_alloc_coherent(dev, - TRACE_TOTAL_SIZE, + priv->testmode_trace.total_size, &priv->testmode_trace.dma_addr, GFP_KERNEL); if (!priv->testmode_trace.cpu_addr) @@ -500,7 +516,7 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) priv->testmode_trace.trace_addr = (u8 *)PTR_ALIGN( priv->testmode_trace.cpu_addr, 0x100); memset(priv->testmode_trace.trace_addr, 0x03B, - TRACE_BUFF_SIZE); + priv->testmode_trace.buff_size); skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, sizeof(priv->testmode_trace.dma_addr) + 20); if (!skb) { @@ -528,14 +544,14 @@ static int iwl_testmode_trace(struct ieee80211_hw *hw, struct nlattr **tb) if (priv->testmode_trace.trace_enabled && priv->testmode_trace.trace_addr) { skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy, - 20 + TRACE_BUFF_SIZE); + 20 + priv->testmode_trace.buff_size); if (skb == NULL) { IWL_DEBUG_INFO(priv, "Error allocating memory\n"); return -ENOMEM; } NLA_PUT(skb, IWL_TM_ATTR_TRACE_DATA, - TRACE_BUFF_SIZE, + priv->testmode_trace.buff_size, priv->testmode_trace.trace_addr); status = cfg80211_testmode_reply(skb); if (status < 0) { |