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Author SHA1 Message Date
Chris Leech 1a2449a87b [I/OAT]: TCP recv offload to I/OAT 
Locks down user pages and sets up for DMA in tcp_recvmsg, then calls
dma_async_try_early_copy in tcp_v4_do_rcv

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:25:56 -07:00
Chris Leech 9593782585 [I/OAT]: Add a sysctl for tuning the I/OAT offloaded I/O threshold 
Any socket recv of less than this ammount will not be offloaded

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:25:54 -07:00
Chris Leech 624d116473 [I/OAT]: Make sk_eat_skb I/OAT aware. 
Add an extra argument to sk_eat_skb, and make it move early copied
packets to the async_wait_queue instead of freeing them.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:25:52 -07:00
Chris Leech 0e4b4992b8 [I/OAT]: Rename cleanup_rbuf to tcp_cleanup_rbuf and make non-static 
Needed to be able to call tcp_cleanup_rbuf in tcp_input.c for I/OAT

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:25:50 -07:00
Chris Leech 97fc2f0848 [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>
 2006-06-17 21:25:48 -07:00
Chris Leech de5506e155 [I/OAT]: Utility functions for offloading sk_buff to iovec copies 
Provides for pinning user space pages in memory, copying to iovecs,
and copying from sk_buffs including fragmented and chained sk_buffs.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:25:46 -07:00
Chris Leech db21733488 [I/OAT]: Setup the networking subsystem as a DMA client 
Attempts to allocate per-CPU DMA channels

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:24:58 -07:00
Chris Leech 0bbd5f4e97 [I/OAT]: Driver for the Intel(R) I/OAT DMA engine 
Adds a new ioatdma driver

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:18:46 -07:00
Chris Leech c13c8260da [I/OAT]: DMA memcpy subsystem 
Provides an API for offloading memory copies to DMA devices

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-06-17 21:18:43 -07:00