xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

samples/bpf: Add support for SKB_MODE to xdp1 and xdp_tx_iptunnel

Browse Source 
Add option to xdp1 and xdp_tx_iptunnel to insert xdp program in
SKB_MODE:
 - update set_link_xdp_fd to take a flags argument that is added to the
   RTM_SETLINK message

 - Add -S option to xdp1 and xdp_tx_iptunnel user code. When passed in
   XDP_FLAGS_SKB_MODE is set in the flags arg passed to set_link_xdp_fd

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2017-04-27 09:11:13 -07:00
committed by David S. Miller
parent 6d684e5469
commit 3993f2cb98
4 changed files with 59 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
samples/bpf/xdp_tx_iptunnel_user.c
View File

@@ -5,6 +5,7 @@
* License as published by the Free Software Foundation.
*/
#include <linux/bpf.h>
#include <linux/if_link.h>
#include <assert.h>
#include <errno.h>
#include <signal.h>
@@ -28,7 +29,7 @@ static int ifindex = -1;
static void int_exit(int sig)
{
if (ifindex > -1)
set_link_xdp_fd(ifindex, -1);
set_link_xdp_fd(ifindex, -1, 0);
exit(0);
}
@@ -136,12 +137,13 @@ 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:h";
const char *optstr = "i:a:p:s:d:m:T:P:Sh";
int min_port = 0, max_port = 0;
struct iptnl_info tnl = {};
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
struct vip vip = {};
char filename[256];
int flags = 0;
int opt;
int i;
@@ -201,6 +203,9 @@ int main(int argc, char **argv)
case 'T':
kill_after_s = atoi(optarg);
break;
case 'S':
flags |= XDP_FLAGS_SKB_MODE;
break;
default:
usage(argv[0]);
return 1;
@@ -243,14 +248,14 @@ int main(int argc, char **argv)
}
}
if (set_link_xdp_fd(ifindex, prog_fd[0]) < 0) {
if (set_link_xdp_fd(ifindex, prog_fd[0], flags) < 0) {
printf("link set xdp fd failed\n");
return 1;
}
poll_stats(kill_after_s);
set_link_xdp_fd(ifindex, -1);
set_link_xdp_fd(ifindex, -1, flags);
return 0;
}