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qcacmn: Enable preAlloc support for SKB buffers

Browse source 
Enable support to use SKB Buffers allocated during bootup for
low memory targets.

Change-Id: Ia55c38767804c5915b9d29d3c61bff236d12cacd
CRs-Fixed: 2067334
This commit is contained in:
bings 2017-09-06 01:38:31 +08:00 • committed by snandini
commit 81b317efbf
2 changed files with 27 additions and 0 deletions
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8
pld_stub/inc/pld_common.h
View file

@ -268,6 +268,14 @@ static inline void *pld_hif_sdio_get_virt_ramdump_mem(struct device *dev,
static inline void pld_hif_sdio_release_ramdump_mem(unsigned long *address)
{
}
static inline struct sk_buff *pld_nbuf_pre_alloc(size_t size)
{
return NULL;
}
static inline int pld_nbuf_pre_alloc_free(struct sk_buff *skb)
{
return 0;
}
#endif
#endif

19
qdf/linux/src/qdf_nbuf.c
View file

@ -42,6 +42,7 @@
#include <qdf_trace.h>
#include <net/ieee80211_radiotap.h>
#include <qdf_module.h>
#include <pld_common.h>
#if defined(FEATURE_TSO)
#include <net/ipv6.h>
@ -210,11 +211,17 @@ struct sk_buff *__qdf_nbuf_alloc(qdf_device_t osdev, size_t size, int reserve,
realloc:
skb = dev_alloc_skb(size);
if (skb)
goto skb_alloc;
skb = pld_nbuf_pre_alloc(size);
if (!skb) {
pr_info("ERROR:NBUF alloc failed\n");
return NULL;
}
skb_alloc:
/* Hawkeye M2M emulation cannot handle memory addresses below 0x50000040
* Though we are trying to reserve low memory upfront to prevent this,
* we sometimes see SKBs allocated from low memory.
@ -271,9 +278,15 @@ struct sk_buff *__qdf_nbuf_alloc(qdf_device_t osdev, size_t size, int reserve,
skb = dev_alloc_skb(size);
if (skb)
goto skb_alloc;
skb = pld_nbuf_pre_alloc(size);
if (!skb)
return NULL;
skb_alloc:
memset(skb->cb, 0x0, sizeof(skb->cb));
/*
@ -315,6 +328,9 @@ EXPORT_SYMBOL(__qdf_nbuf_alloc);
#ifdef CONFIG_MCL
void __qdf_nbuf_free(struct sk_buff *skb)
{
if (pld_nbuf_pre_alloc_free(skb))
return;
if (nbuf_free_cb)
nbuf_free_cb(skb);
else
@ -323,6 +339,9 @@ void __qdf_nbuf_free(struct sk_buff *skb)
#else
void __qdf_nbuf_free(struct sk_buff *skb)
{
if (pld_nbuf_pre_alloc_free(skb))
return;
dev_kfree_skb_any(skb);
}
#endif