path: root/samples/bpf/xdp_tx_iptunnel_user.c
diff options
authorDaniel Borkmann <daniel@iogearbox.net>2017-05-12 01:04:45 +0200
committerDavid S. Miller <davem@davemloft.net>2017-05-11 21:30:57 -0400
commit0489df9a430e9607de8130a6bc4bf4c02f96eaf1 (patch)
tree88f00a27ce3e1e8c94269f687dcbcf951b4c9f1b /samples/bpf/xdp_tx_iptunnel_user.c
parent0a5539f66133a02b24f9cc43da5b84b7e6f3f436 (diff)
xdp: add flag to enforce driver mode
After commit b5cdae3291f7 ("net: Generic XDP") we automatically fall back to a generic XDP variant if the driver does not support native XDP. Allow for an option where the user can specify that always the native XDP variant should be selected and in case it's not supported by a driver, just bail out. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/xdp_tx_iptunnel_user.c')
1 files changed, 6 insertions, 1 deletions
diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c
index 92b8bde9337c..631cdcc41c97 100644
--- a/samples/bpf/xdp_tx_iptunnel_user.c
+++ b/samples/bpf/xdp_tx_iptunnel_user.c
@@ -79,6 +79,8 @@ static void usage(const char *cmd)
printf(" -m <dest-MAC> Used in sending the IP Tunneled pkt\n");
printf(" -T <stop-after-X-seconds> Default: 0 (forever)\n");
printf(" -P <IP-Protocol> Default is TCP\n");
+ printf(" -S use skb-mode\n");
+ printf(" -N enforce native mode\n");
printf(" -h Display this help\n");
@@ -138,7 +140,7 @@ int main(int argc, char **argv)
unsigned char opt_flags[256] = {};
unsigned int kill_after_s = 0;
- const char *optstr = "i:a:p:s:d:m:T:P:Sh";
+ const char *optstr = "i:a:p:s:d:m:T:P:SNh";
int min_port = 0, max_port = 0;
struct iptnl_info tnl = {};
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
@@ -206,6 +208,9 @@ int main(int argc, char **argv)
case 'S':
xdp_flags |= XDP_FLAGS_SKB_MODE;
+ case 'N':
+ xdp_flags |= XDP_FLAGS_DRV_MODE;
+ break;
return 1;