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Message-Id: <20211230035447.523177-3-boon.leong.ong@intel.com>
Date: Thu, 30 Dec 2021 11:54:42 +0800
From: Ong Boon Leong <boon.leong.ong@...el.com>
To: bjorn@...nel.org, Magnus Karlsson <magnus.karlsson@...el.com>,
Jonathan Lemon <jonathan.lemon@...il.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
"David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
KP Singh <kpsingh@...nel.org>
Cc: bpf@...r.kernel.org, netdev@...r.kernel.org,
Ong Boon Leong <boon.leong.ong@...el.com>
Subject: [PATCH bpf-next v2 2/7] samples/bpf: xdpsock: add Dest and Src MAC setting for Tx-only operation
To set Dest MAC address (-G|--tx-dmac) only:
$ xdpsock -i eth0 -t -N -z -G aa:bb:cc:dd:ee:ff
To set Source MAC address (-H|--tx-smac) only:
$ xdpsock -i eth0 -t -N -z -H 11:22:33:44:55:66
To set both Dest and Source MAC address:
$ xdpsock -i eth0 -t -N -z -G aa:bb:cc:dd:ee:ff \
-H 11:22:33:44:55:66
The default Dest and Source MAC address remain the same as before.
Acked-by: Song Liu <songliubraving@...com>
Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@...el.com>
---
samples/bpf/xdpsock_user.c | 35 ++++++++++++++++++++++++++++++-----
1 file changed, 30 insertions(+), 5 deletions(-)
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index d5e298ccf49..c9a8748a460 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -14,6 +14,7 @@
#include <arpa/inet.h>
#include <locale.h>
#include <net/ethernet.h>
+#include <netinet/ether.h>
#include <net/if.h>
#include <poll.h>
#include <pthread.h>
@@ -90,6 +91,10 @@ static u32 opt_pkt_fill_pattern = 0x12345678;
static bool opt_vlan_tag;
static u16 opt_pkt_vlan_id = VLAN_VID__DEFAULT;
static u16 opt_pkt_vlan_pri = VLAN_PRI__DEFAULT;
+static struct ether_addr opt_txdmac = {{ 0x3c, 0xfd, 0xfe,
+ 0x9e, 0x7f, 0x71 }};
+static struct ether_addr opt_txsmac = {{ 0xec, 0xb1, 0xd7,
+ 0x98, 0x3a, 0xc0 }};
static bool opt_extra_stats;
static bool opt_quiet;
static bool opt_app_stats;
@@ -785,8 +790,8 @@ static void gen_eth_hdr_data(void)
sizeof(struct vlan_ethhdr));
/* ethernet & VLAN header */
- memcpy(veth_hdr->h_dest, "\x3c\xfd\xfe\x9e\x7f\x71", ETH_ALEN);
- memcpy(veth_hdr->h_source, "\xec\xb1\xd7\x98\x3a\xc0", ETH_ALEN);
+ memcpy(veth_hdr->h_dest, &opt_txdmac, ETH_ALEN);
+ memcpy(veth_hdr->h_source, &opt_txsmac, ETH_ALEN);
veth_hdr->h_vlan_proto = htons(ETH_P_8021Q);
vlan_tci = opt_pkt_vlan_id & VLAN_VID_MASK;
vlan_tci |= (opt_pkt_vlan_pri << VLAN_PRIO_SHIFT) & VLAN_PRIO_MASK;
@@ -802,8 +807,8 @@ static void gen_eth_hdr_data(void)
sizeof(struct ethhdr));
/* ethernet header */
- memcpy(eth_hdr->h_dest, "\x3c\xfd\xfe\x9e\x7f\x71", ETH_ALEN);
- memcpy(eth_hdr->h_source, "\xec\xb1\xd7\x98\x3a\xc0", ETH_ALEN);
+ memcpy(eth_hdr->h_dest, &opt_txdmac, ETH_ALEN);
+ memcpy(eth_hdr->h_source, &opt_txsmac, ETH_ALEN);
eth_hdr->h_proto = htons(ETH_P_IP);
}
@@ -967,6 +972,8 @@ static struct option long_options[] = {
{"tx-vlan", no_argument, 0, 'V'},
{"tx-vlan-id", required_argument, 0, 'J'},
{"tx-vlan-pri", required_argument, 0, 'K'},
+ {"tx-dmac", required_argument, 0, 'G'},
+ {"tx-smac", required_argument, 0, 'H'},
{"extra-stats", no_argument, 0, 'x'},
{"quiet", no_argument, 0, 'Q'},
{"app-stats", no_argument, 0, 'a'},
@@ -1010,6 +1017,8 @@ static void usage(const char *prog)
" -V, --tx-vlan Send VLAN tagged packets (For -t|--txonly)\n"
" -J, --tx-vlan-id=n Tx VLAN ID [1-4095]. Default: %d (For -V|--tx-vlan)\n"
" -K, --tx-vlan-pri=n Tx VLAN Priority [0-7]. Default: %d (For -V|--tx-vlan)\n"
+ " -G, --tx-dmac=<MAC> Dest MAC addr of TX frame in aa:bb:cc:dd:ee:ff format (For -V|--tx-vlan)\n"
+ " -H, --tx-smac=<MAC> Src MAC addr of TX frame in aa:bb:cc:dd:ee:ff format (For -V|--tx-vlan)\n"
" -x, --extra-stats Display extra statistics.\n"
" -Q, --quiet Do not display any stats.\n"
" -a, --app-stats Display application (syscall) statistics.\n"
@@ -1032,7 +1041,7 @@ 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:P:VJ:K:xQaI:BR",
+ c = getopt_long(argc, argv, "Frtli:q:pSNn:czf:muMd:b:C:s:P:VJ:K:G:H:xQaI:BR",
long_options, &option_index);
if (c == -1)
break;
@@ -1122,6 +1131,22 @@ static void parse_command_line(int argc, char **argv)
case 'K':
opt_pkt_vlan_pri = atoi(optarg);
break;
+ case 'G':
+ if (!ether_aton_r(optarg,
+ (struct ether_addr *)&opt_txdmac)) {
+ fprintf(stderr, "Invalid dmac address:%s\n",
+ optarg);
+ usage(basename(argv[0]));
+ }
+ break;
+ case 'H':
+ if (!ether_aton_r(optarg,
+ (struct ether_addr *)&opt_txsmac)) {
+ fprintf(stderr, "Invalid smac address:%s\n",
+ optarg);
+ usage(basename(argv[0]));
+ }
+ break;
case 'x':
opt_extra_stats = 1;
break;
--
2.25.1
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