* [PATCH v2] samples: bpf: make the use of xdp samples consistent
@ 2019-06-24 23:20 Daniel T. Lee
0 siblings, 0 replies; 6+ messages in thread
From: Daniel T. Lee @ 2019-06-24 23:20 UTC (permalink / raw)
To: Daniel Borkmann, Alexei Starovoitov; +Cc: netdev
Currently, each xdp samples are inconsistent in the use.
Most of the samples fetch the interface with it's name.
(ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
But some of the xdp samples are fetching the interface with
ifindex by command argument.
This commit enables xdp samples to fetch interface with it's name
without changing the original index interface fetching.
(<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
Changes in v2:
- added xdp_redirect_user.c, xdp_redirect_map_user.c
samples/bpf/xdp_adjust_tail_user.c | 12 ++++++++++--
samples/bpf/xdp_redirect_map_user.c | 15 +++++++++++----
samples/bpf/xdp_redirect_user.c | 15 +++++++++++----
samples/bpf/xdp_tx_iptunnel_user.c | 12 ++++++++++--
4 files changed, 42 insertions(+), 12 deletions(-)
diff --git a/samples/bpf/xdp_adjust_tail_user.c b/samples/bpf/xdp_adjust_tail_user.c
index 586ff751aba9..a3596b617c4c 100644
--- a/samples/bpf/xdp_adjust_tail_user.c
+++ b/samples/bpf/xdp_adjust_tail_user.c
@@ -13,6 +13,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <net/if.h>
#include <sys/resource.h>
#include <arpa/inet.h>
#include <netinet/ether.h>
@@ -69,7 +70,7 @@ static void usage(const char *cmd)
printf("Start a XDP prog which send ICMP \"packet too big\" \n"
"messages if ingress packet is bigger then MAX_SIZE bytes\n");
printf("Usage: %s [...]\n", cmd);
- printf(" -i <ifindex> Interface Index\n");
+ printf(" -i <ifname|ifindex> Interface\n");
printf(" -T <stop-after-X-seconds> Default: 0 (forever)\n");
printf(" -S use skb-mode\n");
printf(" -N enforce native mode\n");
@@ -102,7 +103,9 @@ int main(int argc, char **argv)
switch (opt) {
case 'i':
- ifindex = atoi(optarg);
+ ifindex = if_nametoindex(optarg);
+ if (!ifindex)
+ ifindex = atoi(optarg);
break;
case 'T':
kill_after_s = atoi(optarg);
@@ -136,6 +139,11 @@ int main(int argc, char **argv)
return 1;
}
+ if (!ifindex) {
+ fprintf(stderr, "Invalid ifname\n");
+ return 1;
+ }
+
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
prog_load_attr.file = filename;
diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c
index 15bb6f67f9c3..f70ee33907fd 100644
--- a/samples/bpf/xdp_redirect_map_user.c
+++ b/samples/bpf/xdp_redirect_map_user.c
@@ -10,6 +10,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
+#include <net/if.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
@@ -85,7 +86,7 @@ static void poll_stats(int interval, int ifindex)
static void usage(const char *prog)
{
fprintf(stderr,
- "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
+ "usage: %s [OPTS] <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
" -N enforce native mode\n"
@@ -127,7 +128,7 @@ int main(int argc, char **argv)
}
if (optind == argc) {
- printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]);
+ printf("usage: %s <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n", argv[0]);
return 1;
}
@@ -136,8 +137,14 @@ int main(int argc, char **argv)
return 1;
}
- ifindex_in = strtoul(argv[optind], NULL, 0);
- ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+ ifindex_in = if_nametoindex(argv[optind]);
+ if (!ifindex_in)
+ ifindex_in = strtoul(argv[optind], NULL, 0);
+
+ ifindex_out = if_nametoindex(argv[optind + 1]);
+ if (!ifindex_out)
+ ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c
index ce71be187205..39de06f3ec25 100644
--- a/samples/bpf/xdp_redirect_user.c
+++ b/samples/bpf/xdp_redirect_user.c
@@ -10,6 +10,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
+#include <net/if.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
@@ -85,7 +86,7 @@ static void poll_stats(int interval, int ifindex)
static void usage(const char *prog)
{
fprintf(stderr,
- "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
+ "usage: %s [OPTS] <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
" -N enforce native mode\n"
@@ -128,7 +129,7 @@ int main(int argc, char **argv)
}
if (optind == argc) {
- printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]);
+ printf("usage: %s <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n", argv[0]);
return 1;
}
@@ -137,8 +138,14 @@ int main(int argc, char **argv)
return 1;
}
- ifindex_in = strtoul(argv[optind], NULL, 0);
- ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+ ifindex_in = if_nametoindex(argv[optind]);
+ if (!ifindex_in)
+ ifindex_in = strtoul(argv[optind], NULL, 0);
+
+ ifindex_out = if_nametoindex(argv[optind + 1]);
+ if (!ifindex_out)
+ ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c
index 394896430712..dfb68582e243 100644
--- a/samples/bpf/xdp_tx_iptunnel_user.c
+++ b/samples/bpf/xdp_tx_iptunnel_user.c
@@ -9,6 +9,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <net/if.h>
#include <sys/resource.h>
#include <arpa/inet.h>
#include <netinet/ether.h>
@@ -83,7 +84,7 @@ static void usage(const char *cmd)
"in an IPv4/v6 header and XDP_TX it out. The dst <VIP:PORT>\n"
"is used to select packets to encapsulate\n\n");
printf("Usage: %s [...]\n", cmd);
- printf(" -i <ifindex> Interface Index\n");
+ printf(" -i <ifname|ifindex> Interface\n");
printf(" -a <vip-service-address> IPv4 or IPv6\n");
printf(" -p <vip-service-port> A port range (e.g. 433-444) is also allowed\n");
printf(" -s <source-ip> Used in the IPTunnel header\n");
@@ -181,7 +182,9 @@ int main(int argc, char **argv)
switch (opt) {
case 'i':
- ifindex = atoi(optarg);
+ ifindex = if_nametoindex(optarg);
+ if (!ifindex)
+ ifindex = atoi(optarg);
break;
case 'a':
vip.family = parse_ipstr(optarg, vip.daddr.v6);
@@ -253,6 +256,11 @@ int main(int argc, char **argv)
return 1;
}
+ if (!ifindex) {
+ fprintf(stderr, "Invalid ifname\n");
+ return 1;
+ }
+
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
prog_load_attr.file = filename;
--
2.17.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2] samples: bpf: make the use of xdp samples consistent
2019-06-25 0:55 Daniel T. Lee
2019-06-25 9:08 ` Toke Høiland-Jørgensen
@ 2019-06-26 14:33 ` Daniel Borkmann
1 sibling, 0 replies; 6+ messages in thread
From: Daniel Borkmann @ 2019-06-26 14:33 UTC (permalink / raw)
To: Daniel T. Lee, Alexei Starovoitov; +Cc: bpf, netdev
On 06/25/2019 02:55 AM, Daniel T. Lee wrote:
> Currently, each xdp samples are inconsistent in the use.
> Most of the samples fetch the interface with it's name.
> (ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
>
> But some of the xdp samples are fetching the interface with
> ifindex by command argument.
>
> This commit enables xdp samples to fetch interface with it's name
> without changing the original index interface fetching.
> (<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
>
> Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Applied, thanks!
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] samples: bpf: make the use of xdp samples consistent
2019-06-25 10:05 ` Jesper Dangaard Brouer
@ 2019-06-25 13:31 ` Song Liu
0 siblings, 0 replies; 6+ messages in thread
From: Song Liu @ 2019-06-25 13:31 UTC (permalink / raw)
To: Jesper Dangaard Brouer
Cc: Toke Høiland-Jørgensen, Daniel T. Lee, Daniel Borkmann,
Alexei Starovoitov, bpf, Networking
On Tue, Jun 25, 2019 at 5:09 AM Jesper Dangaard Brouer
<brouer@redhat.com> wrote:
>
> On Tue, 25 Jun 2019 11:08:22 +0200
> Toke Høiland-Jørgensen <toke@redhat.com> wrote:
>
> > "Daniel T. Lee" <danieltimlee@gmail.com> writes:
> >
> > > Currently, each xdp samples are inconsistent in the use.
> > > Most of the samples fetch the interface with it's name.
> > > (ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
> > >
> > > But some of the xdp samples are fetching the interface with
> > > ifindex by command argument.
> > >
> > > This commit enables xdp samples to fetch interface with it's name
> > > without changing the original index interface fetching.
> > > (<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
> > >
> > > Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
> > > ---
> > > Changes in v2:
> > > - added xdp_redirect_user.c, xdp_redirect_map_user.c
> >
> > Great, thanks!
> >
> > Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
>
> Great you basically solved one of our TODOs:
> - TODO Change sample programs to accept ifnames as well as indexes
>
> https://github.com/xdp-project/xdp-project/blob/master/xdp-project.org#next-change-sample-programs-to-accept-ifnames-as-well-as-indexes
>
> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
>
> --
> Best regards,
> Jesper Dangaard Brouer
> MSc.CS, Principal Kernel Engineer at Red Hat
> LinkedIn: http://www.linkedin.com/in/brouer
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] samples: bpf: make the use of xdp samples consistent
2019-06-25 9:08 ` Toke Høiland-Jørgensen
@ 2019-06-25 10:05 ` Jesper Dangaard Brouer
2019-06-25 13:31 ` Song Liu
0 siblings, 1 reply; 6+ messages in thread
From: Jesper Dangaard Brouer @ 2019-06-25 10:05 UTC (permalink / raw)
To: Toke Høiland-Jørgensen
Cc: brouer, Daniel T. Lee, Daniel Borkmann, Alexei Starovoitov, bpf, netdev
On Tue, 25 Jun 2019 11:08:22 +0200
Toke Høiland-Jørgensen <toke@redhat.com> wrote:
> "Daniel T. Lee" <danieltimlee@gmail.com> writes:
>
> > Currently, each xdp samples are inconsistent in the use.
> > Most of the samples fetch the interface with it's name.
> > (ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
> >
> > But some of the xdp samples are fetching the interface with
> > ifindex by command argument.
> >
> > This commit enables xdp samples to fetch interface with it's name
> > without changing the original index interface fetching.
> > (<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
> >
> > Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
> > ---
> > Changes in v2:
> > - added xdp_redirect_user.c, xdp_redirect_map_user.c
>
> Great, thanks!
>
> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Great you basically solved one of our TODOs:
- TODO Change sample programs to accept ifnames as well as indexes
https://github.com/xdp-project/xdp-project/blob/master/xdp-project.org#next-change-sample-programs-to-accept-ifnames-as-well-as-indexes
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2] samples: bpf: make the use of xdp samples consistent
2019-06-25 0:55 Daniel T. Lee
@ 2019-06-25 9:08 ` Toke Høiland-Jørgensen
2019-06-25 10:05 ` Jesper Dangaard Brouer
2019-06-26 14:33 ` Daniel Borkmann
1 sibling, 1 reply; 6+ messages in thread
From: Toke Høiland-Jørgensen @ 2019-06-25 9:08 UTC (permalink / raw)
To: Daniel T. Lee, Daniel Borkmann, Alexei Starovoitov; +Cc: bpf, netdev
"Daniel T. Lee" <danieltimlee@gmail.com> writes:
> Currently, each xdp samples are inconsistent in the use.
> Most of the samples fetch the interface with it's name.
> (ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
>
> But some of the xdp samples are fetching the interface with
> ifindex by command argument.
>
> This commit enables xdp samples to fetch interface with it's name
> without changing the original index interface fetching.
> (<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
>
> Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
> ---
> Changes in v2:
> - added xdp_redirect_user.c, xdp_redirect_map_user.c
Great, thanks!
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] samples: bpf: make the use of xdp samples consistent
@ 2019-06-25 0:55 Daniel T. Lee
2019-06-25 9:08 ` Toke Høiland-Jørgensen
2019-06-26 14:33 ` Daniel Borkmann
0 siblings, 2 replies; 6+ messages in thread
From: Daniel T. Lee @ 2019-06-25 0:55 UTC (permalink / raw)
To: Daniel Borkmann, Alexei Starovoitov; +Cc: bpf, netdev
Currently, each xdp samples are inconsistent in the use.
Most of the samples fetch the interface with it's name.
(ex. xdp1, xdp2skb, xdp_redirect_cpu, xdp_sample_pkts, etc.)
But some of the xdp samples are fetching the interface with
ifindex by command argument.
This commit enables xdp samples to fetch interface with it's name
without changing the original index interface fetching.
(<ifname|ifindex> fetching in the same way as xdp_sample_pkts_user.c does.)
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
Changes in v2:
- added xdp_redirect_user.c, xdp_redirect_map_user.c
samples/bpf/xdp_adjust_tail_user.c | 12 ++++++++++--
samples/bpf/xdp_redirect_map_user.c | 15 +++++++++++----
samples/bpf/xdp_redirect_user.c | 15 +++++++++++----
samples/bpf/xdp_tx_iptunnel_user.c | 12 ++++++++++--
4 files changed, 42 insertions(+), 12 deletions(-)
diff --git a/samples/bpf/xdp_adjust_tail_user.c b/samples/bpf/xdp_adjust_tail_user.c
index 586ff751aba9..a3596b617c4c 100644
--- a/samples/bpf/xdp_adjust_tail_user.c
+++ b/samples/bpf/xdp_adjust_tail_user.c
@@ -13,6 +13,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <net/if.h>
#include <sys/resource.h>
#include <arpa/inet.h>
#include <netinet/ether.h>
@@ -69,7 +70,7 @@ static void usage(const char *cmd)
printf("Start a XDP prog which send ICMP \"packet too big\" \n"
"messages if ingress packet is bigger then MAX_SIZE bytes\n");
printf("Usage: %s [...]\n", cmd);
- printf(" -i <ifindex> Interface Index\n");
+ printf(" -i <ifname|ifindex> Interface\n");
printf(" -T <stop-after-X-seconds> Default: 0 (forever)\n");
printf(" -S use skb-mode\n");
printf(" -N enforce native mode\n");
@@ -102,7 +103,9 @@ int main(int argc, char **argv)
switch (opt) {
case 'i':
- ifindex = atoi(optarg);
+ ifindex = if_nametoindex(optarg);
+ if (!ifindex)
+ ifindex = atoi(optarg);
break;
case 'T':
kill_after_s = atoi(optarg);
@@ -136,6 +139,11 @@ int main(int argc, char **argv)
return 1;
}
+ if (!ifindex) {
+ fprintf(stderr, "Invalid ifname\n");
+ return 1;
+ }
+
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
prog_load_attr.file = filename;
diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c
index 15bb6f67f9c3..f70ee33907fd 100644
--- a/samples/bpf/xdp_redirect_map_user.c
+++ b/samples/bpf/xdp_redirect_map_user.c
@@ -10,6 +10,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
+#include <net/if.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
@@ -85,7 +86,7 @@ static void poll_stats(int interval, int ifindex)
static void usage(const char *prog)
{
fprintf(stderr,
- "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
+ "usage: %s [OPTS] <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
" -N enforce native mode\n"
@@ -127,7 +128,7 @@ int main(int argc, char **argv)
}
if (optind == argc) {
- printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]);
+ printf("usage: %s <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n", argv[0]);
return 1;
}
@@ -136,8 +137,14 @@ int main(int argc, char **argv)
return 1;
}
- ifindex_in = strtoul(argv[optind], NULL, 0);
- ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+ ifindex_in = if_nametoindex(argv[optind]);
+ if (!ifindex_in)
+ ifindex_in = strtoul(argv[optind], NULL, 0);
+
+ ifindex_out = if_nametoindex(argv[optind + 1]);
+ if (!ifindex_out)
+ ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c
index ce71be187205..39de06f3ec25 100644
--- a/samples/bpf/xdp_redirect_user.c
+++ b/samples/bpf/xdp_redirect_user.c
@@ -10,6 +10,7 @@
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
+#include <net/if.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
@@ -85,7 +86,7 @@ static void poll_stats(int interval, int ifindex)
static void usage(const char *prog)
{
fprintf(stderr,
- "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
+ "usage: %s [OPTS] <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
" -N enforce native mode\n"
@@ -128,7 +129,7 @@ int main(int argc, char **argv)
}
if (optind == argc) {
- printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]);
+ printf("usage: %s <IFNAME|IFINDEX>_IN <IFNAME|IFINDEX>_OUT\n", argv[0]);
return 1;
}
@@ -137,8 +138,14 @@ int main(int argc, char **argv)
return 1;
}
- ifindex_in = strtoul(argv[optind], NULL, 0);
- ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+ ifindex_in = if_nametoindex(argv[optind]);
+ if (!ifindex_in)
+ ifindex_in = strtoul(argv[optind], NULL, 0);
+
+ ifindex_out = if_nametoindex(argv[optind + 1]);
+ if (!ifindex_out)
+ ifindex_out = strtoul(argv[optind + 1], NULL, 0);
+
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c
index 394896430712..dfb68582e243 100644
--- a/samples/bpf/xdp_tx_iptunnel_user.c
+++ b/samples/bpf/xdp_tx_iptunnel_user.c
@@ -9,6 +9,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <net/if.h>
#include <sys/resource.h>
#include <arpa/inet.h>
#include <netinet/ether.h>
@@ -83,7 +84,7 @@ static void usage(const char *cmd)
"in an IPv4/v6 header and XDP_TX it out. The dst <VIP:PORT>\n"
"is used to select packets to encapsulate\n\n");
printf("Usage: %s [...]\n", cmd);
- printf(" -i <ifindex> Interface Index\n");
+ printf(" -i <ifname|ifindex> Interface\n");
printf(" -a <vip-service-address> IPv4 or IPv6\n");
printf(" -p <vip-service-port> A port range (e.g. 433-444) is also allowed\n");
printf(" -s <source-ip> Used in the IPTunnel header\n");
@@ -181,7 +182,9 @@ int main(int argc, char **argv)
switch (opt) {
case 'i':
- ifindex = atoi(optarg);
+ ifindex = if_nametoindex(optarg);
+ if (!ifindex)
+ ifindex = atoi(optarg);
break;
case 'a':
vip.family = parse_ipstr(optarg, vip.daddr.v6);
@@ -253,6 +256,11 @@ int main(int argc, char **argv)
return 1;
}
+ if (!ifindex) {
+ fprintf(stderr, "Invalid ifname\n");
+ return 1;
+ }
+
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
prog_load_attr.file = filename;
--
2.17.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-06-26 14:33 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2019-06-24 23:20 [PATCH v2] samples: bpf: make the use of xdp samples consistent Daniel T. Lee
2019-06-25 0:55 Daniel T. Lee
2019-06-25 9:08 ` Toke Høiland-Jørgensen
2019-06-25 10:05 ` Jesper Dangaard Brouer
2019-06-25 13:31 ` Song Liu
2019-06-26 14:33 ` Daniel Borkmann
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