qcacld-3.0: check memory size in dp_prealloc_get_context_memory

check memory size in dp_prealloc_get_context_memory, if memory size
needed > pre-allocated, then fall back to dynamic memory allocation.

Change-Id: I2727feef066046b54dff9206a1f6699ef4455fe8
CRs-Fixed: 3222594

core/dp/txrx3.0/dp_txrx.c

@@ -778,7 +778,7 @@ deinit:
 	return QDF_STATUS_E_FAILURE;
 }
 
-void *dp_prealloc_get_context_memory(uint32_t ctxt_type)
+void *dp_prealloc_get_context_memory(uint32_t ctxt_type, size_t ctxt_size)
 {
 	int i;
 	struct dp_prealloc_context *cp;
@@ -787,7 +787,7 @@ void *dp_prealloc_get_context_memory(uint32_t ctxt_type)
 		cp = &g_dp_context_allocs[i];
 
 		if ((ctxt_type == cp->ctxt_type) && !cp->in_use &&
-		    cp->addr) {
+		    cp->addr && ctxt_size <= cp->size) {
 			cp->in_use = true;
 			return cp->addr;
 		}

core/dp/txrx3.0/dp_txrx.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. 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
@@ -502,13 +502,14 @@ void dp_prealloc_deinit(void);
  * dp_prealloc_get_context_memory() - gets pre-alloc DP context memory from
  *				      global pool
  * @ctxt_type: type of DP context
+ * @ctxt_size: size of memory needed
  *
  * This is done only as part of init happening in a single context. Hence
  * no lock is used for protection
  *
  * Return: Address of context
  */
-void *dp_prealloc_get_context_memory(uint32_t ctxt_type);
+void *dp_prealloc_get_context_memory(uint32_t ctxt_type, size_t ctxt_size);
 
 /**
  * dp_prealloc_put_context_memory() - puts back pre-alloc DP context memory to