[I/OAT]: Structure changes for TCP recv offload to I/OAT
Adds an async_wait_queue and some additional fields to tcp_sock, and a dma_cookie_t to sk_buff. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -29,6 +29,7 @@
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#include <linux/net.h>
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#include <linux/textsearch.h>
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#include <net/checksum.h>
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#include <linux/dmaengine.h>
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#define HAVE_ALLOC_SKB /* For the drivers to know */
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#define HAVE_ALIGNABLE_SKB /* Ditto 8) */
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@ -285,6 +286,9 @@ struct sk_buff {
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__u16 tc_verd; /* traffic control verdict */
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#endif
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#endif
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#ifdef CONFIG_NET_DMA
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dma_cookie_t dma_cookie;
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#endif
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/* These elements must be at the end, see alloc_skb() for details. */
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@ -18,6 +18,7 @@
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#define _LINUX_TCP_H
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#include <linux/types.h>
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#include <linux/dmaengine.h>
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#include <asm/byteorder.h>
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struct tcphdr {
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@ -233,6 +234,13 @@ struct tcp_sock {
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struct iovec *iov;
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int memory;
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int len;
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#ifdef CONFIG_NET_DMA
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/* members for async copy */
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struct dma_chan *dma_chan;
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int wakeup;
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struct dma_pinned_list *pinned_list;
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dma_cookie_t dma_cookie;
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#endif
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} ucopy;
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__u32 snd_wl1; /* Sequence for window update */
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@ -132,6 +132,7 @@ struct sock_common {
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* @sk_receive_queue: incoming packets
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* @sk_wmem_alloc: transmit queue bytes committed
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* @sk_write_queue: Packet sending queue
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* @sk_async_wait_queue: DMA copied packets
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* @sk_omem_alloc: "o" is "option" or "other"
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* @sk_wmem_queued: persistent queue size
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* @sk_forward_alloc: space allocated forward
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@ -205,6 +206,7 @@ struct sock {
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atomic_t sk_omem_alloc;
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struct sk_buff_head sk_receive_queue;
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struct sk_buff_head sk_write_queue;
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struct sk_buff_head sk_async_wait_queue;
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int sk_wmem_queued;
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int sk_forward_alloc;
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gfp_t sk_allocation;
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@ -28,6 +28,7 @@
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#include <linux/cache.h>
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#include <linux/percpu.h>
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#include <linux/skbuff.h>
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#include <linux/dmaengine.h>
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#include <net/inet_connection_sock.h>
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#include <net/inet_timewait_sock.h>
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@ -817,6 +818,12 @@ static inline void tcp_prequeue_init(struct tcp_sock *tp)
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tp->ucopy.len = 0;
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tp->ucopy.memory = 0;
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skb_queue_head_init(&tp->ucopy.prequeue);
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#ifdef CONFIG_NET_DMA
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tp->ucopy.dma_chan = NULL;
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tp->ucopy.wakeup = 0;
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tp->ucopy.pinned_list = NULL;
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tp->ucopy.dma_cookie = 0;
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#endif
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}
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/* Packet is added to VJ-style prequeue for processing in process
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@ -832,6 +832,9 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
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atomic_set(&newsk->sk_omem_alloc, 0);
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skb_queue_head_init(&newsk->sk_receive_queue);
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skb_queue_head_init(&newsk->sk_write_queue);
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#ifdef CONFIG_NET_DMA
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skb_queue_head_init(&newsk->sk_async_wait_queue);
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#endif
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rwlock_init(&newsk->sk_dst_lock);
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rwlock_init(&newsk->sk_callback_lock);
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@ -1383,6 +1386,9 @@ void sock_init_data(struct socket *sock, struct sock *sk)
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skb_queue_head_init(&sk->sk_receive_queue);
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skb_queue_head_init(&sk->sk_write_queue);
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skb_queue_head_init(&sk->sk_error_queue);
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#ifdef CONFIG_NET_DMA
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skb_queue_head_init(&sk->sk_async_wait_queue);
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#endif
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sk->sk_send_head = NULL;
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