| /* |
| * Copyright (c) 2012, 2014-2017 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /** |
| * @file ol_txrx_osif_api.h |
| * @brief Define the host data API functions called by the host OS shim SW. |
| */ |
| #ifndef _OL_TXRX_OSIF_API__H_ |
| #define _OL_TXRX_OSIF_API__H_ |
| |
| #include <qdf_nbuf.h> /* qdf_nbuf_t */ |
| #include "cds_sched.h" |
| #include "ol_txrx_ctrl_api.h" |
| #include <cdp_txrx_peer_ops.h> |
| |
| /** |
| * struct ol_rx_cached_buf - rx cached buffer |
| * @list: linked list |
| * @buf: skb buffer |
| */ |
| struct ol_rx_cached_buf { |
| struct list_head list; |
| qdf_nbuf_t buf; |
| }; |
| |
| struct txrx_rx_metainfo; |
| |
| /** |
| * @brief Divide a jumbo TCP frame into smaller segments. |
| * @details |
| * For efficiency, the protocol stack above the WLAN driver may operate |
| * on jumbo tx frames, which are larger than the 802.11 MTU. |
| * The OSIF SW uses this txrx API function to divide the jumbo tx TCP frame |
| * into a series of segment frames. |
| * The segments are created as clones of the input jumbo frame. |
| * The txrx SW generates a new encapsulation header (ethernet + IP + TCP) |
| * for each of the output segment frames. The exact format of this header, |
| * e.g. 802.3 vs. Ethernet II, and IPv4 vs. IPv6, is chosen to match the |
| * header format of the input jumbo frame. |
| * The input jumbo frame is not modified. |
| * After the ol_txrx_osif_tso_segment returns, the OSIF SW needs to perform |
| * DMA mapping on each of the segment network buffers, and also needs to |
| * |
| * @param txrx_vdev - which virtual device will transmit the TSO segments |
| * @param max_seg_payload_bytes - the maximum size for the TCP payload of |
| * each segment frame. |
| * This does not include the ethernet + IP + TCP header sizes. |
| * @param jumbo_tcp_frame - jumbo frame which needs to be cloned+segmented |
| * @return |
| * NULL if the segmentation fails, - OR - |
| * a NULL-terminated list of segment network buffers |
| */ |
| qdf_nbuf_t ol_txrx_osif_tso_segment(ol_txrx_vdev_handle txrx_vdev, |
| int max_seg_payload_bytes, |
| qdf_nbuf_t jumbo_tcp_frame); |
| |
| qdf_nbuf_t ol_tx_data(void *data_vdev, qdf_nbuf_t skb); |
| |
| void ol_rx_data_process(struct ol_txrx_peer_t *peer, |
| qdf_nbuf_t rx_buf_list); |
| |
| void ol_txrx_flush_rx_frames(struct ol_txrx_peer_t *peer, |
| bool drop); |
| #endif /* _OL_TXRX_OSIF_API__H_ */ |