From 24251c264798ac5a72667245c2650676d7ac2108 Mon Sep 17 00:00:00 2001 From: Andy Gospodarek Date: Mon, 17 Jul 2017 16:14:19 -0400 Subject: [PATCH] samples/bpf: add option for native and skb mode for redirect apps When testing with a driver that has both native and generic redirect support: $ sudo ./samples/bpf/xdp_redirect -N 5 6 input: 5 output: 6 ifindex 6: 4961879 pkt/s ifindex 6: 6391319 pkt/s ifindex 6: 6419468 pkt/s $ sudo ./samples/bpf/xdp_redirect -S 5 6 input: 5 output: 6 ifindex 6: 1845435 pkt/s ifindex 6: 3882850 pkt/s ifindex 6: 3893974 pkt/s $ sudo ./samples/bpf/xdp_redirect_map -N 5 6 input: 5 output: 6 map[0] (vports) = 4, map[1] (map) = 5, map[2] (count) = 0 ifindex 6: 2207374 pkt/s ifindex 6: 6212869 pkt/s ifindex 6: 6286515 pkt/s $ sudo ./samples/bpf/xdp_redirect_map -S 5 6 input: 5 output: 6 map[0] (vports) = 4, map[1] (map) = 5, map[2] (count) = 0 ifindex 6: 5052528 pkt/s ifindex 6: 5736631 pkt/s ifindex 6: 5739962 pkt/s Signed-off-by: Andy Gospodarek Acked-by: John Fastabend Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- samples/bpf/xdp_redirect_map_user.c | 50 +++++++++++++++++++++++------ samples/bpf/xdp_redirect_user.c | 50 +++++++++++++++++++++++------ 2 files changed, 82 insertions(+), 18 deletions(-) diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c index 0b8009a85415..a1ad00fdaa8a 100644 --- a/samples/bpf/xdp_redirect_map_user.c +++ b/samples/bpf/xdp_redirect_map_user.c @@ -10,6 +10,7 @@ * General Public License for more details. */ #include +#include #include #include #include @@ -17,6 +18,7 @@ #include #include #include +#include #include "bpf_load.h" #include "bpf_util.h" @@ -25,9 +27,11 @@ static int ifindex_in; static int ifindex_out; +static __u32 xdp_flags; + static void int_exit(int sig) { - set_link_xdp_fd(ifindex_in, -1, 0); + set_link_xdp_fd(ifindex_in, -1, xdp_flags); exit(0); } @@ -56,20 +60,47 @@ static void poll_stats(int interval, int ifindex) } } -int main(int ac, char **argv) +static void usage(const char *prog) { - char filename[256]; - int ret, key = 0; + fprintf(stderr, + "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n" + "OPTS:\n" + " -S use skb-mode\n" + " -N enforce native mode\n", + prog); +} - snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); - if (ac != 3) { +int main(int argc, char **argv) +{ + const char *optstr = "SN"; + char filename[256]; + int ret, opt, key = 0; + + while ((opt = getopt(argc, argv, optstr)) != -1) { + switch (opt) { + case 'S': + xdp_flags |= XDP_FLAGS_SKB_MODE; + break; + case 'N': + xdp_flags |= XDP_FLAGS_DRV_MODE; + break; + default: + usage(basename(argv[0])); + return 1; + } + } + + if (optind == argc) { printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]); return 1; } - ifindex_in = strtoul(argv[1], NULL, 0); - ifindex_out = strtoul(argv[2], NULL, 0); + ifindex_in = strtoul(argv[optind], NULL, 0); + 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]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); @@ -82,8 +113,9 @@ int main(int ac, char **argv) } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); - if (set_link_xdp_fd(ifindex_in, prog_fd[0], 0) < 0) { + if (set_link_xdp_fd(ifindex_in, prog_fd[0], xdp_flags) < 0) { printf("link set xdp fd failed\n"); return 1; } diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c index 761a91d5d7b4..f705a1905d2d 100644 --- a/samples/bpf/xdp_redirect_user.c +++ b/samples/bpf/xdp_redirect_user.c @@ -10,6 +10,7 @@ * General Public License for more details. */ #include +#include #include #include #include @@ -17,6 +18,7 @@ #include #include #include +#include #include "bpf_load.h" #include "bpf_util.h" @@ -25,9 +27,11 @@ static int ifindex_in; static int ifindex_out; +static __u32 xdp_flags; + static void int_exit(int sig) { - set_link_xdp_fd(ifindex_in, -1, 0); + set_link_xdp_fd(ifindex_in, -1, xdp_flags); exit(0); } @@ -56,20 +60,47 @@ static void poll_stats(int interval, int ifindex) } } -int main(int ac, char **argv) +static void usage(const char *prog) { - char filename[256]; - int ret, key = 0; + fprintf(stderr, + "usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n" + "OPTS:\n" + " -S use skb-mode\n" + " -N enforce native mode\n", + prog); +} - snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); - if (ac != 3) { +int main(int argc, char **argv) +{ + const char *optstr = "SN"; + char filename[256]; + int ret, opt, key = 0; + + while ((opt = getopt(argc, argv, optstr)) != -1) { + switch (opt) { + case 'S': + xdp_flags |= XDP_FLAGS_SKB_MODE; + break; + case 'N': + xdp_flags |= XDP_FLAGS_DRV_MODE; + break; + default: + usage(basename(argv[0])); + return 1; + } + } + + if (optind == argc) { printf("usage: %s IFINDEX_IN IFINDEX_OUT\n", argv[0]); return 1; } - ifindex_in = strtoul(argv[1], NULL, 0); - ifindex_out = strtoul(argv[2], NULL, 0); + ifindex_in = strtoul(argv[optind], NULL, 0); + 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]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); @@ -82,8 +113,9 @@ int main(int ac, char **argv) } signal(SIGINT, int_exit); + signal(SIGTERM, int_exit); - if (set_link_xdp_fd(ifindex_in, prog_fd[0], 0) < 0) { + if (set_link_xdp_fd(ifindex_in, prog_fd[0], xdp_flags) < 0) { printf("link set xdp fd failed\n"); return 1; } -- 2.30.2