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| author |   Jay Jayatheerthan <jay.jayatheerthan@intel.com> | 2019-12-20 14:25:30 +0530 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-12-20 16:10:39 -0800 |
| commit | 46e3268eaaca9f8a0f145872b96fe6d54a232890 (patch) | |
| tree | 8ef2139e4421af7f64a5aede0c2190c30634dd7c /samples/bpf | |
| parent | samples/bpf: xdpsock: Add option to specify tx packet size (diff) | |
| download | linux-dev-46e3268eaaca9f8a0f145872b96fe6d54a232890.tar.xz linux-dev-46e3268eaaca9f8a0f145872b96fe6d54a232890.zip | |
samples/bpf: xdpsock: Add option to specify transmit fill pattern
The UDP payload fill pattern can be specified using '-P' or '--tx-pkt-pattern'
option. It is an unsigned 32 bit field and defaulted to 0x12345678.
The IP and UDP checksum is calculated by the code as per the content of
the packet before transmission.
Signed-off-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191220085530.4980-7-jay.jayatheerthan@intel.com
Diffstat (limited to 'samples/bpf')
| -rw-r--r-- | samples/bpf/xdpsock_user.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c index 2297158a32bd..d74c4c83fc93 100644 --- a/samples/bpf/xdpsock_user.c +++ b/samples/bpf/xdpsock_user.c @@ -76,7 +76,7 @@ static bool benchmark_done; static u32 opt_batch_size = 64; static int opt_pkt_count; static u16 opt_pkt_size = MIN_PKT_SIZE; -static u32 pkt_fill_pattern = 0x12345678; +static u32 opt_pkt_fill_pattern = 0x12345678; static int opt_poll; static int opt_interval = 1; static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP; @@ -517,7 +517,7 @@ static void gen_eth_hdr_data(void) udp_hdr->len = htons(UDP_PKT_SIZE); /* UDP data */ - memset32_htonl(pkt_data + PKT_HDR_SIZE, pkt_fill_pattern, + memset32_htonl(pkt_data + PKT_HDR_SIZE, opt_pkt_fill_pattern, UDP_PKT_DATA_SIZE); /* UDP header checksum */ @@ -630,6 +630,7 @@ static struct option long_options[] = { {"batch-size", required_argument, 0, 'b'}, {"tx-pkt-count", required_argument, 0, 'C'}, {"tx-pkt-size", required_argument, 0, 's'}, + {"tx-pkt-pattern", required_argument, 0, 'P'}, {0, 0, 0, 0} }; @@ -663,10 +664,11 @@ static void usage(const char *prog) " -s, --tx-pkt-size=n Transmit packet size.\n" " (Default: %d bytes)\n" " Min size: %d, Max size %d.\n" + " -P, --tx-pkt-pattern=nPacket fill pattern. Default: 0x%x\n" "\n"; fprintf(stderr, str, prog, XSK_UMEM__DEFAULT_FRAME_SIZE, opt_batch_size, MIN_PKT_SIZE, MIN_PKT_SIZE, - XSK_UMEM__DEFAULT_FRAME_SIZE); + XSK_UMEM__DEFAULT_FRAME_SIZE, opt_pkt_fill_pattern); exit(EXIT_FAILURE); } @@ -678,7 +680,7 @@ static void parse_command_line(int argc, char **argv) opterr = 0; for (;;) { - c = getopt_long(argc, argv, "Frtli:q:pSNn:czf:muMd:b:C:s:", + c = getopt_long(argc, argv, "Frtli:q:pSNn:czf:muMd:b:C:s:P:", long_options, &option_index); if (c == -1) break; @@ -756,6 +758,9 @@ static void parse_command_line(int argc, char **argv) usage(basename(argv[0])); } break; + case 'P': + opt_pkt_fill_pattern = strtol(optarg, NULL, 16); + break; default: usage(basename(argv[0])); } |