mirror of
https://github.com/torvalds/linux
synced 2024-10-20 02:09:15 +00:00
206eea7833
Allow frag SKBs in PCIe and advertise the maximum number of frags to the opmode. As a fallback. linearize the SKB if it exceeds the maximum number of fragments. This allows using the hardware better (filling more TBs) and should improve performance when used by the opmode. Also adjust tracing to be able to deal with this. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2009 - 2014 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#if !defined(__IWLWIFI_DEVICE_TRACE_DATA) || defined(TRACE_HEADER_MULTI_READ)
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#define __IWLWIFI_DEVICE_TRACE_DATA
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM iwlwifi_data
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TRACE_EVENT(iwlwifi_dev_tx_data,
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TP_PROTO(const struct device *dev,
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struct sk_buff *skb,
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u8 hdr_len, size_t data_len),
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TP_ARGS(dev, skb, hdr_len, data_len),
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TP_STRUCT__entry(
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DEV_ENTRY
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__dynamic_array(u8, data, iwl_trace_data(skb) ? data_len : 0)
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),
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TP_fast_assign(
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DEV_ASSIGN;
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if (iwl_trace_data(skb))
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skb_copy_bits(skb, hdr_len,
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__get_dynamic_array(data), data_len);
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),
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TP_printk("[%s] TX frame data", __get_str(dev))
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);
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TRACE_EVENT(iwlwifi_dev_rx_data,
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TP_PROTO(const struct device *dev,
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const struct iwl_trans *trans,
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void *rxbuf, size_t len),
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TP_ARGS(dev, trans, rxbuf, len),
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TP_STRUCT__entry(
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DEV_ENTRY
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__dynamic_array(u8, data,
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len - iwl_rx_trace_len(trans, rxbuf, len))
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),
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TP_fast_assign(
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size_t offs = iwl_rx_trace_len(trans, rxbuf, len);
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DEV_ASSIGN;
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if (offs < len)
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memcpy(__get_dynamic_array(data),
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((u8 *)rxbuf) + offs, len - offs);
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),
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TP_printk("[%s] RX frame data", __get_str(dev))
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);
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#endif /* __IWLWIFI_DEVICE_TRACE_DATA */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE iwl-devtrace-data
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#include <trace/define_trace.h>
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