qcacmn: Lithium LRO Support

Add Large Receive Offload (LRO) support on Lithium.

CRs-Fixed: 1107169
Change-Id: I536bf4bf5c5529e0ec7f77cec7b0f2ced94b6d92

qdf/inc/qdf_lro.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2015-2017 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.
+ */
+
+/**
+ * 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;
+
+#if defined(FEATURE_LRO)
+
+qdf_lro_ctx_t qdf_lro_init(void);
+
+void qdf_lro_deinit(qdf_lro_ctx_t lro_ctx);
+
+bool qdf_lro_update_info(qdf_lro_ctx_t lro_ctx, qdf_nbuf_t nbuf);
+
+void qdf_lro_flow_free(qdf_nbuf_t nbuf);
+
+void qdf_lro_flush_pkt(struct iphdr *iph,
+	 struct tcphdr *tcph, qdf_lro_ctx_t lro_ctx);
+
+void qdf_lro_flush(qdf_lro_ctx_t lro_ctx);
+
+#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_pkt(struct iphdr *iph,
+	 struct tcphdr *tcph, qdf_lro_ctx_t lro_ctx)
+{
+}
+
+static inline void qdf_lro_flush(qdf_lro_ctx_t lro_ctx)
+{
+}
+
+#endif /* FEATURE_LRO */
+#endif