On Tue, Sep 11, 2018 at 09:38:04PM +0200, Tushar Dave wrote: > Add a sample program that shows how socksg program is used and attached > to socket filter. The kernel sample program deals with struct > scatterlist that is passed as bpf context. > > When run in server mode, the sample RDS program opens PF_RDS socket, > attaches eBPF program to RDS socket which then uses bpf_msg_pull_data > helper to inspect packet data contained in struct scatterlist and > returns appropriate action code back to kernel. > > To ease testing, RDS client functionality is also added so that users > can generate RDS packet. > > Server: > [root@lab71 bpf]# ./rds_filter -s 192.168.3.71 -t tcp > running server in a loop > transport tcp > server bound to address: 192.168.3.71 port 4000 > server listening on 192.168.3.71 > > Client: > [root@lab70 bpf]# ./rds_filter -s 192.168.3.71 -c 192.168.3.70 -t tcp > transport tcp > client bound to address: 192.168.3.70 port 25278 > client sending 8192 byte message from 192.168.3.70 to 192.168.3.71 on > port 25278 > payload contains:30 31 32 33 34 35 36 37 38 39 ... > > Server output: > 192.168.3.71 received a packet from 192.168.3.71 of len 8192 cmsg len 0, > on port 25278 > payload contains:30 31 32 33 34 35 36 37 38 39 ... > server listening on 192.168.3.71 > > [root@lab71 tushar]# cat /sys/kernel/debug/tracing/trace_pipe > <idle>-0 [038] ..s. 146.947362: 0: 30 31 32 > <idle>-0 [038] ..s. 146.947364: 0: 33 34 35 > > Similarly specifying '-t ib' will run this on IB link. > > Signed-off-by: Tushar Dave <tushar.n.d...@oracle.com> > Acked-by: Sowmini Varadhan <sowmini.varad...@oracle.com> > --- > samples/bpf/Makefile | 3 + > samples/bpf/rds_filter_kern.c | 42 ++++++ > samples/bpf/rds_filter_user.c | 339 > ++++++++++++++++++++++++++++++++++++++++++
please no samples. Add this as proper test to tools/testing/selftests/bpf that reports PASS/FAIL and can be run automatically. samples/bpf is effectively dead code.
