[PATCH] ipcpd: Bypass Qdisc in Ethernet IPCP

  • From: Sander Vrijders <sander.vrijders@xxxxxxxx>
  • To: ouroboros@xxxxxxxxxxxxx
  • Date: Wed, 3 Oct 2018 12:16:44 +0200

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@xxxxxxxx>
---
 src/ipcpd/eth/eth.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ipcpd/eth/eth.c b/src/ipcpd/eth/eth.c
index 8175d80..05dd9ac 100644
--- a/src/ipcpd/eth/eth.c
+++ b/src/ipcpd/eth/eth.c
@@ -1199,6 +1199,9 @@ static int eth_ipcp_bootstrap(const struct ipcp_config * 
conf)
 #endif
 #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");
-- 
2.19.0


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  • » [PATCH] ipcpd: Bypass Qdisc in Ethernet IPCP - Sander Vrijders
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