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authorDan Williams <dan.j.williams@intel.com>2013-12-31 00:37:29 +0400
committerDan Williams <dan.j.williams@intel.com>2014-09-28 18:05:16 +0400
commit7bced397510ab569d31de4c70b39e13355046387 (patch)
treefaa4067a53e42acffc752e9a153e7dbaed4126e5 /include/linux
parent08223d80df38e666a42d7c82eb340db55c6e03bd (diff)
downloadlinux-7bced397510ab569d31de4c70b39e13355046387.tar.xz
net_dma: simple removal
Per commit "77873803363c net_dma: mark broken" net_dma is no longer used and there is no plan to fix it. This is the mechanical removal of bits in CONFIG_NET_DMA ifdef guards. Reverting the remainder of the net_dma induced changes is deferred to subsequent patches. Marked for stable due to Roman's report of a memory leak in dma_pin_iovec_pages(): https://lkml.org/lkml/2014/9/3/177 Cc: Dave Jiang <dave.jiang@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: David Whipple <whipple@securedatainnovations.ch> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: <stable@vger.kernel.org> Reported-by: Roman Gushchin <klamm@yandex-team.ru> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/dmaengine.h22
-rw-r--r--include/linux/skbuff.h8
-rw-r--r--include/linux/tcp.h8
3 files changed, 3 insertions, 35 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index c5c92d59e531..3e382ecd1927 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -903,18 +903,6 @@ static inline void dmaengine_put(void)
}
#endif
-#ifdef CONFIG_NET_DMA
-#define net_dmaengine_get() dmaengine_get()
-#define net_dmaengine_put() dmaengine_put()
-#else
-static inline void net_dmaengine_get(void)
-{
-}
-static inline void net_dmaengine_put(void)
-{
-}
-#endif
-
#ifdef CONFIG_ASYNC_TX_DMA
#define async_dmaengine_get() dmaengine_get()
#define async_dmaengine_put() dmaengine_put()
@@ -936,16 +924,8 @@ async_dma_find_channel(enum dma_transaction_type type)
return NULL;
}
#endif /* CONFIG_ASYNC_TX_DMA */
-
-dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan,
- void *dest, void *src, size_t len);
-dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan,
- struct page *page, unsigned int offset, void *kdata, size_t len);
-dma_cookie_t dma_async_memcpy_pg_to_pg(struct dma_chan *chan,
- struct page *dest_pg, unsigned int dest_off, struct page *src_pg,
- unsigned int src_off, size_t len);
void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
- struct dma_chan *chan);
+ struct dma_chan *chan);
static inline void async_tx_ack(struct dma_async_tx_descriptor *tx)
{
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 5e1e6f2d98c2..bdbf7afad6b7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -28,7 +28,6 @@
#include <linux/textsearch.h>
#include <net/checksum.h>
#include <linux/rcupdate.h>
-#include <linux/dmaengine.h>
#include <linux/hrtimer.h>
#include <linux/dma-mapping.h>
#include <linux/netdev_features.h>
@@ -515,11 +514,8 @@ struct sk_buff {
/* 6/8 bit hole (depending on ndisc_nodetype presence) */
kmemcheck_bitfield_end(flags2);
-#if defined CONFIG_NET_DMA || defined CONFIG_NET_RX_BUSY_POLL
- union {
- unsigned int napi_id;
- dma_cookie_t dma_cookie;
- };
+#ifdef CONFIG_NET_RX_BUSY_POLL
+ unsigned int napi_id;
#endif
#ifdef CONFIG_NETWORK_SECMARK
__u32 secmark;
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 4ad0706d40eb..90895b8dc7f2 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -19,7 +19,6 @@
#include <linux/skbuff.h>
-#include <linux/dmaengine.h>
#include <net/sock.h>
#include <net/inet_connection_sock.h>
#include <net/inet_timewait_sock.h>
@@ -169,13 +168,6 @@ struct tcp_sock {
struct iovec *iov;
int memory;
int len;
-#ifdef CONFIG_NET_DMA
- /* members for async copy */
- struct dma_chan *dma_chan;
- int wakeup;
- struct dma_pinned_list *pinned_list;
- dma_cookie_t dma_cookie;
-#endif
} ucopy;
u32 snd_wl1; /* Sequence for window update */