SCTP checksum offloading performance issue

Ethernet Products

Determine ramifications of Intel® Ethernet products and technologies

SCTP checksum offloading performance issue

1,332 Views

We use 82599 ixgbe NIC. Driver version is 3.19.1. Because we use user space SCTP stack. It can't use checksum offloading feature. I modify the driver code skip skb->ip_summed check. Because we use ip raw socket, sk_buff hasn't transport head ptr. I add ip head length to Transmit Context Descriptor (TDESC). At last our user space SCTP stack can use checksum offloading feature.

But I find it only can transmit 120k pps SCTP packet(MTU 1500). It seems HW checksum offloading leading lots of time delay. Please give some advice.

Link Copied

0 Replies

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.