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/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright (C) 2024 Intel Corporation
*/
#ifndef __iwl_utils_h__
#define __iwl_utils_h__
#include <net/cfg80211.h>
#ifdef CONFIG_INET
/**
* iwl_tx_tso_segment - Segments a TSO packet into subframes for A-MSDU.
* @skb: buffer to segment.
* @num_subframes: number of subframes to create.
* @netdev_flags: netdev feature flags.
* @mpdus_skbs: list to hold the segmented subframes.
*
* This function segments a large TCP packet into subframes.
* subframes are added to the mpdus_skbs list
*
* Returns: 0 on success and negative value on failure.
*/
int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
netdev_features_t netdev_flags,
struct sk_buff_head *mpdus_skbs);
#else
static inline
int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
netdev_features_t netdev_flags,
struct sk_buff_head *mpdus_skbs)
{
WARN_ON(1);
return -1;
}
#endif /* CONFIG_INET */
static inline
u32 iwl_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
{
struct ieee80211_mgmt *mgmt = (void *)beacon;
const u8 *ie;
if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
return 0;
frame_size -= mgmt->u.beacon.variable - beacon;
ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
if (!ie)
return 0;
return ie - beacon;
}
#endif /* __iwl_utils_h__ */
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