ipcpd: Bypass Qdisc in Ethernet IPCP

Since Linux kernel 3.14 there is the option to bypass the kernel
Qdisc. This will speed up the Ethernet IPCP.

Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ipcpd/eth/eth.c b/src/ipcpd/eth/eth.c
index 8175d803..05dd9ac7 100644
--- a/src/ipcpd/eth/eth.c
+++ b/src/ipcpd/eth/eth.c
@@ -1200,6 +1200,9 @@ static int eth_ipcp_bootstrap(const struct ipcp_config * conf)
 #ifndef SHM_RDRB_MULTI_BLOCK
         size_t           maxsz;
 #endif
+#if defined(HAVE_RAW_SOCKETS)
+        int              qdisc_bypass = 1;
+#endif
         assert(conf);
         assert(conf->type == THIS_TYPE);
 
@@ -1365,6 +1368,11 @@ static int eth_ipcp_bootstrap(const struct ipcp_config * conf)
                 return -1;
         }
 
+        if (setsockopt(eth_data.s_fd, SOL_PACKET, PACKET_QDISC_BYPASS,
+                       &qdisc_bypass, sizeof(qdisc_bypass))) {
+                log_info("Qdisc bypass not supported.");
+        }
+
         if (bind(eth_data.s_fd, (struct sockaddr *) &eth_data.device,
                 sizeof(eth_data.device))) {
                 log_err("Failed to bind socket to interface");