summaryrefslogtreecommitdiff
path: root/net/core/sysctl_net_core.c
diff options
context:
space:
mode:
authorEliezer Tamir <eliezer.tamir@linux.intel.com>2013-06-10 11:39:50 +0300
committerDavid S. Miller <davem@davemloft.net>2013-06-10 21:22:35 -0700
commit060212928670593fb89243640bf05cf89560b023 (patch)
tree32ae5c7be094983fb06430dbe09d36e2b317ca9c /net/core/sysctl_net_core.c
parentaf12fa6e46aa651e7b86a4c4117b562518fef184 (diff)
net: add low latency socket poll
Adds an ndo_ll_poll method and the code that supports it. This method can be used by low latency applications to busy-poll Ethernet device queues directly from the socket code. sysctl_net_ll_poll controls how many microseconds to poll. Default is zero (disabled). Individual protocol support will be added by subsequent patches. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com> Acked-by: Eric Dumazet <edumazet@google.com> Tested-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sysctl_net_core.c')
-rw-r--r--net/core/sysctl_net_core.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 741db5fc7806..4b48f39582b0 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -19,6 +19,7 @@
#include <net/ip.h>
#include <net/sock.h>
#include <net/net_ratelimit.h>
+#include <net/ll_poll.h>
static int one = 1;
@@ -284,6 +285,15 @@ static struct ctl_table net_core_table[] = {
.proc_handler = flow_limit_table_len_sysctl
},
#endif /* CONFIG_NET_FLOW_LIMIT */
+#ifdef CONFIG_NET_LL_RX_POLL
+ {
+ .procname = "low_latency_poll",
+ .data = &sysctl_net_ll_poll,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax
+ },
+#endif
#endif /* CONFIG_NET */
{
.procname = "netdev_budget",