| /* |
| * Copyright (c) 2015-2017 The Linux Foundation. All rights reserved. |
| * |
| * 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. |
| */ |
| |
| /** |
| * DOC: Large Receive Offload API |
| * This file defines the Large receive offload API. |
| */ |
| #ifndef _QDF_LRO_H |
| #define _QDF_LRO_H |
| |
| #include <qdf_nbuf.h> |
| #include <i_qdf_lro.h> |
| |
| /** |
| * @qdf_nbuf_t - Platform indepedent LRO context abstraction |
| */ |
| typedef __qdf_lro_ctx_t qdf_lro_ctx_t; |
| |
| /** |
| * qdf_lro_info_s - LRO information |
| * @iph: IP header |
| * @tcph: TCP header |
| */ |
| struct qdf_lro_info { |
| uint8_t *iph; |
| uint8_t *tcph; |
| }; |
| |
| #if defined(FEATURE_LRO) |
| |
| /** |
| * qdf_lro_init() - LRO initialization function |
| * |
| * Return: LRO context |
| */ |
| qdf_lro_ctx_t qdf_lro_init(void); |
| |
| /** |
| * qdf_lro_deinit() - LRO deinitialization function |
| * @lro_ctx: LRO context |
| * |
| * Return: nothing |
| */ |
| void qdf_lro_deinit(qdf_lro_ctx_t lro_ctx); |
| |
| /** |
| * qdf_lro_get_info() - Update the LRO information |
| * |
| * @lro_ctx: LRO context |
| * @nbuf: network buffer |
| * @info: LRO related information passed in by the caller |
| * @plro_desc: lro information returned as output |
| * |
| * Look-up the LRO descriptor based on the LRO information and |
| * the network buffer provided. Update the skb cb with the |
| * descriptor found |
| * |
| * Return: true: LRO eligible false: LRO ineligible |
| */ |
| bool qdf_lro_get_info(qdf_lro_ctx_t lro_ctx, qdf_nbuf_t nbuf, |
| struct qdf_lro_info *info, |
| void **plro_desc); |
| |
| /** |
| * qdf_lro_flush_pkt() - function to flush the LRO flow |
| * @info: LRO related information passed by the caller |
| * @lro_ctx: LRO context |
| * |
| * Flush all the packets aggregated in the LRO manager for the |
| * flow indicated by the TCP and IP header |
| * |
| * Return: none |
| */ |
| void qdf_lro_flush_pkt(qdf_lro_ctx_t lro_ctx, |
| struct qdf_lro_info *info); |
| |
| /** |
| * qdf_lro_flush() - LRO flush API |
| * @lro_ctx: LRO context |
| * |
| * Flush all the packets aggregated in the LRO manager for all |
| * the flows |
| * |
| * Return: none |
| */ |
| void qdf_lro_flush(qdf_lro_ctx_t lro_ctx); |
| |
| /** |
| * qdf_lro_desc_free() - Free the LRO descriptor |
| * @desc: LRO descriptor |
| * @lro_ctx: LRO context |
| * |
| * Return the LRO descriptor to the free pool |
| * |
| * Return: none |
| */ |
| void qdf_lro_desc_free(qdf_lro_ctx_t lro_ctx, void *desc); |
| |
| #else |
| |
| static inline qdf_lro_ctx_t qdf_lro_init(void) |
| { |
| return NULL; |
| } |
| |
| static inline void qdf_lro_deinit(qdf_lro_ctx_t lro_ctx) |
| { |
| } |
| |
| static inline void qdf_lro_flush(qdf_lro_ctx_t lro_ctx) |
| { |
| } |
| #endif /* FEATURE_LRO */ |
| #endif |