From 4ce7cc2b09553a91d4aea014c39674685715173a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 13 May 2011 11:57:40 -0700 Subject: iwlagn: support multiple TBs per command The current "huge" command handling is a bit confusing, and very limited since only one command may be huge at a time. Additionally, we often copy data around quite pointlessly since we could instead map the existing scan buffer for example and use it directly. This patch makes that possible. The first change is that multiple buffers may be given to each command (this change was prepared earlier so callsites don't need to change). Each of those can be mapped attached to a TB in the TFD, and the command header can use a TB (the first one) in the TFD as well. Doing this allows getting rid of huge commands in favour of mapping existing buffers. The beacon transmission is also optimised to not copy the SKB at all but use multiple TBs. Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/iwl-devtrace.h | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) (limited to 'drivers/net/wireless/iwlwifi/iwl-devtrace.h') diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h index f00172cb8a6d..fc131867c10b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h +++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h @@ -137,20 +137,27 @@ TRACE_EVENT(iwlwifi_dev_ucode_wrap_event, #define TRACE_SYSTEM iwlwifi TRACE_EVENT(iwlwifi_dev_hcmd, - TP_PROTO(struct iwl_priv *priv, void *hcmd, size_t len, u32 flags), - TP_ARGS(priv, hcmd, len, flags), + TP_PROTO(struct iwl_priv *priv, u32 flags, + const void *hcmd0, size_t len0, + const void *hcmd1, size_t len1, + const void *hcmd2, size_t len2), + TP_ARGS(priv, flags, hcmd0, len0, hcmd1, len1, hcmd2, len2), TP_STRUCT__entry( PRIV_ENTRY - __dynamic_array(u8, hcmd, len) + __dynamic_array(u8, hcmd0, len0) + __dynamic_array(u8, hcmd1, len1) + __dynamic_array(u8, hcmd2, len2) __field(u32, flags) ), TP_fast_assign( PRIV_ASSIGN; - memcpy(__get_dynamic_array(hcmd), hcmd, len); + memcpy(__get_dynamic_array(hcmd0), hcmd0, len0); + memcpy(__get_dynamic_array(hcmd1), hcmd1, len1); + memcpy(__get_dynamic_array(hcmd2), hcmd2, len2); __entry->flags = flags; ), TP_printk("[%p] hcmd %#.2x (%ssync)", - __entry->priv, ((u8 *)__get_dynamic_array(hcmd))[0], + __entry->priv, ((u8 *)__get_dynamic_array(hcmd0))[0], __entry->flags & CMD_ASYNC ? "a" : "") ); -- cgit v1.2.1