diff options
| author |   Chris Leech <christopher.leech@intel.com> | 2006-05-23 18:02:55 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-06-17 21:25:54 -0700 |
| commit | 9593782585e0cf70babe787a8463d492a68b1744 (patch) | |
| tree | 149401a3973036452a07bed899e70d3b92abe1bf /net | |
| parent | [I/OAT]: Make sk_eat_skb I/OAT aware. (diff) | |
| download | linux-dev-9593782585e0cf70babe787a8463d492a68b1744.tar.xz linux-dev-9593782585e0cf70babe787a8463d492a68b1744.zip | |
[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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/user_dma.c | 4 | ||||
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 10 |
2 files changed, 14 insertions, 0 deletions
diff --git a/net/core/user_dma.c b/net/core/user_dma.c index 9eee91bcbf3f..b7c98dbcdb81 100644 --- a/net/core/user_dma.c +++ b/net/core/user_dma.c @@ -30,6 +30,10 @@ #include <linux/rtnetlink.h> /* for BUG_TRAP */ #include <net/tcp.h> +#define NET_DMA_DEFAULT_COPYBREAK 4096 + +int sysctl_tcp_dma_copybreak = NET_DMA_DEFAULT_COPYBREAK; + /** * dma_skb_copy_datagram_iovec - Copy a datagram to an iovec. * @skb - buffer to copy diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 6b6c3adfcf00..6a6aa537b7aa 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -688,6 +688,16 @@ ctl_table ipv4_table[] = { .mode = 0644, .proc_handler = &proc_dointvec }, +#ifdef CONFIG_NET_DMA + { + .ctl_name = NET_TCP_DMA_COPYBREAK, + .procname = "tcp_dma_copybreak", + .data = &sysctl_tcp_dma_copybreak, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, +#endif { .ctl_name = 0 } }; |