| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20230824102255.1561885-3-toke@redhat.com>
Date: Thu, 24 Aug 2023 12:22:45 +0200
From: Toke Høiland-Jørgensen <toke@...hat.com>
To: Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <martin.lau@...ux.dev>,
Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>,
Hao Luo <haoluo@...gle.com>,
Jiri Olsa <jolsa@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Jesper Dangaard Brouer <hawk@...nel.org>
Cc: Toke Høiland-Jørgensen <toke@...hat.com>,
bpf@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH bpf-next v3 2/7] samples/bpf: Remove the xdp_redirect* utilities
These utilities have all been ported to xdp-tools as functions of the
xdp-bench utility. The four different utilities in samples are incorporated
as separate subcommands to xdp-bench, with most of the command line
parameters left intact, except that mandatory arguments are always
positional in xdp-bench. For full usage details see the --help output of
each command, or the xdp-bench man page.
Some examples of how to convert usage to xdp-bench are:
xdp_redirect eth0 eth1
--> xdp-bench redirect eth0 eth1
xdp_redirect_map eth0 eth1
--> xdp-bench redirect-map eth0 eth1
xdp_redirect_map_multi eth0 eth1 eth2 eth3
--> xdp-bench redirect-multi eth0 eth1 eth2 eth3
xdp_redirect_cpu -d eth0 -c 0 -c 1
--> xdp-bench redirect-cpu -c 0 -c 1 eth0
xdp_redirect_cpu -d eth0 -c 0 -c 1 -r eth1
--> xdp-bench redirect-cpu -c 0 -c 1 eth0 -r redirect -D eth1
Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
---
samples/bpf/Makefile | 29 +-
samples/bpf/xdp_redirect.bpf.c | 49 --
samples/bpf/xdp_redirect_cpu.bpf.c | 539 ---------------------
samples/bpf/xdp_redirect_cpu_user.c | 559 ----------------------
samples/bpf/xdp_redirect_map.bpf.c | 97 ----
samples/bpf/xdp_redirect_map_multi.bpf.c | 77 ---
samples/bpf/xdp_redirect_map_multi_user.c | 232 ---------
samples/bpf/xdp_redirect_map_user.c | 228 ---------
samples/bpf/xdp_redirect_user.c | 172 -------
9 files changed, 1 insertion(+), 1981 deletions(-)
delete mode 100644 samples/bpf/xdp_redirect.bpf.c
delete mode 100644 samples/bpf/xdp_redirect_cpu.bpf.c
delete mode 100644 samples/bpf/xdp_redirect_cpu_user.c
delete mode 100644 samples/bpf/xdp_redirect_map.bpf.c
delete mode 100644 samples/bpf/xdp_redirect_map_multi.bpf.c
delete mode 100644 samples/bpf/xdp_redirect_map_multi_user.c
delete mode 100644 samples/bpf/xdp_redirect_map_user.c
delete mode 100644 samples/bpf/xdp_redirect_user.c
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 29b07c4ec066..d2f5c043e4f3 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -51,11 +51,6 @@ tprogs-y += xdp_sample_pkts
tprogs-y += ibumad
tprogs-y += hbm
-tprogs-y += xdp_redirect_cpu
-tprogs-y += xdp_redirect_map_multi
-tprogs-y += xdp_redirect_map
-tprogs-y += xdp_redirect
-
# Libbpf dependencies
LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf
LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH))/libbpf
@@ -111,10 +106,6 @@ xdp_sample_pkts-objs := xdp_sample_pkts_user.o
ibumad-objs := ibumad_user.o
hbm-objs := hbm.o $(CGROUP_HELPERS)
-xdp_redirect_map_multi-objs := xdp_redirect_map_multi_user.o $(XDP_SAMPLE)
-xdp_redirect_cpu-objs := xdp_redirect_cpu_user.o $(XDP_SAMPLE)
-xdp_redirect_map-objs := xdp_redirect_map_user.o $(XDP_SAMPLE)
-xdp_redirect-objs := xdp_redirect_user.o $(XDP_SAMPLE)
xdp_router_ipv4-objs := xdp_router_ipv4_user.o $(XDP_SAMPLE)
# Tell kbuild to always build the programs
@@ -205,10 +196,6 @@ TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib
endif
TPROGS_LDLIBS += $(LIBBPF) -lelf -lz
-TPROGLDLIBS_xdp_redirect += -lm
-TPROGLDLIBS_xdp_redirect_cpu += -lm
-TPROGLDLIBS_xdp_redirect_map += -lm
-TPROGLDLIBS_xdp_redirect_map_multi += -lm
TPROGLDLIBS_xdp_router_ipv4 += -lm -pthread
TPROGLDLIBS_tracex4 += -lrt
TPROGLDLIBS_trace_output += -lrt
@@ -323,10 +310,6 @@ $(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPERS) $(obj)/$(XDP_SAMPLE): | libbpf_
.PHONY: libbpf_hdrs
-$(obj)/xdp_redirect_cpu_user.o: $(obj)/xdp_redirect_cpu.skel.h
-$(obj)/xdp_redirect_map_multi_user.o: $(obj)/xdp_redirect_map_multi.skel.h
-$(obj)/xdp_redirect_map_user.o: $(obj)/xdp_redirect_map.skel.h
-$(obj)/xdp_redirect_user.o: $(obj)/xdp_redirect.skel.h
$(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_router_ipv4.skel.h
$(obj)/tracex5.bpf.o: $(obj)/syscall_nrs.h
@@ -379,10 +362,6 @@ endef
CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
-$(obj)/xdp_redirect_cpu.bpf.o: $(obj)/xdp_sample.bpf.o
-$(obj)/xdp_redirect_map_multi.bpf.o: $(obj)/xdp_sample.bpf.o
-$(obj)/xdp_redirect_map.bpf.o: $(obj)/xdp_sample.bpf.o
-$(obj)/xdp_redirect.bpf.o: $(obj)/xdp_sample.bpf.o
$(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sample.bpf.o
$(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux.h $(src)/xdp_sample.bpf.h $(src)/xdp_sample_shared.h
@@ -393,15 +372,9 @@ $(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux.h $(src)/xdp_sample.bpf.h $(src)/x
-I$(LIBBPF_INCLUDE) $(CLANG_SYS_INCLUDES) \
-c $(filter %.bpf.c,$^) -o $@
-LINKED_SKELS := xdp_redirect_cpu.skel.h xdp_redirect_map_multi.skel.h \
- xdp_redirect_map.skel.h xdp_redirect.skel.h \
- xdp_router_ipv4.skel.h
+LINKED_SKELS := xdp_router_ipv4.skel.h
clean-files += $(LINKED_SKELS)
-xdp_redirect_cpu.skel.h-deps := xdp_redirect_cpu.bpf.o xdp_sample.bpf.o
-xdp_redirect_map_multi.skel.h-deps := xdp_redirect_map_multi.bpf.o xdp_sample.bpf.o
-xdp_redirect_map.skel.h-deps := xdp_redirect_map.bpf.o xdp_sample.bpf.o
-xdp_redirect.skel.h-deps := xdp_redirect.bpf.o xdp_sample.bpf.o
xdp_router_ipv4.skel.h-deps := xdp_router_ipv4.bpf.o xdp_sample.bpf.o
LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
diff --git a/samples/bpf/xdp_redirect.bpf.c b/samples/bpf/xdp_redirect.bpf.c
deleted file mode 100644
index 7c02bacfe96b..000000000000
--- a/samples/bpf/xdp_redirect.bpf.c
+++ /dev/null
@@ -1,49 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright (c) 2016 John Fastabend <john.r.fastabend@...el.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#include "vmlinux.h"
-#include "xdp_sample.bpf.h"
-#include "xdp_sample_shared.h"
-
-const volatile int ifindex_out;
-
-SEC("xdp")
-int xdp_redirect_prog(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- struct datarec *rec;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- swap_src_dst_mac(data);
- return bpf_redirect(ifindex_out, 0);
-}
-
-/* Redirect require an XDP bpf_prog loaded on the TX device */
-SEC("xdp")
-int xdp_redirect_dummy_prog(struct xdp_md *ctx)
-{
- return XDP_PASS;
-}
-
-char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/xdp_redirect_cpu.bpf.c b/samples/bpf/xdp_redirect_cpu.bpf.c
deleted file mode 100644
index 87c54bfdbb70..000000000000
--- a/samples/bpf/xdp_redirect_cpu.bpf.c
+++ /dev/null
@@ -1,539 +0,0 @@
-/* XDP redirect to CPUs via cpumap (BPF_MAP_TYPE_CPUMAP)
- *
- * GPLv2, Copyright(c) 2017 Jesper Dangaard Brouer, Red Hat, Inc.
- */
-#include "vmlinux.h"
-#include "xdp_sample.bpf.h"
-#include "xdp_sample_shared.h"
-#include "hash_func01.h"
-
-/* Special map type that can XDP_REDIRECT frames to another CPU */
-struct {
- __uint(type, BPF_MAP_TYPE_CPUMAP);
- __uint(key_size, sizeof(u32));
- __uint(value_size, sizeof(struct bpf_cpumap_val));
-} cpu_map SEC(".maps");
-
-/* Set of maps controlling available CPU, and for iterating through
- * selectable redirect CPUs.
- */
-struct {
- __uint(type, BPF_MAP_TYPE_ARRAY);
- __type(key, u32);
- __type(value, u32);
-} cpus_available SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_ARRAY);
- __type(key, u32);
- __type(value, u32);
- __uint(max_entries, 1);
-} cpus_count SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
- __type(key, u32);
- __type(value, u32);
- __uint(max_entries, 1);
-} cpus_iterator SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_DEVMAP);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(struct bpf_devmap_val));
- __uint(max_entries, 1);
-} tx_port SEC(".maps");
-
-char tx_mac_addr[ETH_ALEN];
-
-/* Helper parse functions */
-
-static __always_inline
-bool parse_eth(struct ethhdr *eth, void *data_end,
- u16 *eth_proto, u64 *l3_offset)
-{
- u16 eth_type;
- u64 offset;
-
- offset = sizeof(*eth);
- if ((void *)eth + offset > data_end)
- return false;
-
- eth_type = eth->h_proto;
-
- /* Skip non 802.3 Ethertypes */
- if (__builtin_expect(bpf_ntohs(eth_type) < ETH_P_802_3_MIN, 0))
- return false;
-
- /* Handle VLAN tagged packet */
- if (eth_type == bpf_htons(ETH_P_8021Q) ||
- eth_type == bpf_htons(ETH_P_8021AD)) {
- struct vlan_hdr *vlan_hdr;
-
- vlan_hdr = (void *)eth + offset;
- offset += sizeof(*vlan_hdr);
- if ((void *)eth + offset > data_end)
- return false;
- eth_type = vlan_hdr->h_vlan_encapsulated_proto;
- }
- /* Handle double VLAN tagged packet */
- if (eth_type == bpf_htons(ETH_P_8021Q) ||
- eth_type == bpf_htons(ETH_P_8021AD)) {
- struct vlan_hdr *vlan_hdr;
-
- vlan_hdr = (void *)eth + offset;
- offset += sizeof(*vlan_hdr);
- if ((void *)eth + offset > data_end)
- return false;
- eth_type = vlan_hdr->h_vlan_encapsulated_proto;
- }
-
- *eth_proto = bpf_ntohs(eth_type);
- *l3_offset = offset;
- return true;
-}
-
-static __always_inline
-u16 get_dest_port_ipv4_udp(struct xdp_md *ctx, u64 nh_off)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct iphdr *iph = data + nh_off;
- struct udphdr *udph;
-
- if (iph + 1 > data_end)
- return 0;
- if (!(iph->protocol == IPPROTO_UDP))
- return 0;
-
- udph = (void *)(iph + 1);
- if (udph + 1 > data_end)
- return 0;
-
- return bpf_ntohs(udph->dest);
-}
-
-static __always_inline
-int get_proto_ipv4(struct xdp_md *ctx, u64 nh_off)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct iphdr *iph = data + nh_off;
-
- if (iph + 1 > data_end)
- return 0;
- return iph->protocol;
-}
-
-static __always_inline
-int get_proto_ipv6(struct xdp_md *ctx, u64 nh_off)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct ipv6hdr *ip6h = data + nh_off;
-
- if (ip6h + 1 > data_end)
- return 0;
- return ip6h->nexthdr;
-}
-
-SEC("xdp")
-int xdp_prognum0_no_touch(struct xdp_md *ctx)
-{
- u32 key = bpf_get_smp_processor_id();
- struct datarec *rec;
- u32 *cpu_selected;
- u32 cpu_dest = 0;
- u32 key0 = 0;
-
- /* Only use first entry in cpus_available */
- cpu_selected = bpf_map_lookup_elem(&cpus_available, &key0);
- if (!cpu_selected)
- return XDP_ABORTED;
- cpu_dest = *cpu_selected;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-SEC("xdp")
-int xdp_prognum1_touch_data(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- struct datarec *rec;
- u32 *cpu_selected;
- u32 cpu_dest = 0;
- u32 key0 = 0;
- u16 eth_type;
-
- /* Only use first entry in cpus_available */
- cpu_selected = bpf_map_lookup_elem(&cpus_available, &key0);
- if (!cpu_selected)
- return XDP_ABORTED;
- cpu_dest = *cpu_selected;
-
- /* Validate packet length is minimum Eth header size */
- if (eth + 1 > data_end)
- return XDP_ABORTED;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- /* Read packet data, and use it (drop non 802.3 Ethertypes) */
- eth_type = eth->h_proto;
- if (bpf_ntohs(eth_type) < ETH_P_802_3_MIN) {
- NO_TEAR_INC(rec->dropped);
- return XDP_DROP;
- }
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-SEC("xdp")
-int xdp_prognum2_round_robin(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct datarec *rec;
- u32 cpu_dest = 0;
- u32 key0 = 0;
-
- u32 *cpu_selected;
- u32 *cpu_iterator;
- u32 *cpu_max;
- u32 cpu_idx;
-
- cpu_max = bpf_map_lookup_elem(&cpus_count, &key0);
- if (!cpu_max)
- return XDP_ABORTED;
-
- cpu_iterator = bpf_map_lookup_elem(&cpus_iterator, &key0);
- if (!cpu_iterator)
- return XDP_ABORTED;
- cpu_idx = *cpu_iterator;
-
- *cpu_iterator += 1;
- if (*cpu_iterator == *cpu_max)
- *cpu_iterator = 0;
-
- cpu_selected = bpf_map_lookup_elem(&cpus_available, &cpu_idx);
- if (!cpu_selected)
- return XDP_ABORTED;
- cpu_dest = *cpu_selected;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-SEC("xdp")
-int xdp_prognum3_proto_separate(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- u8 ip_proto = IPPROTO_UDP;
- struct datarec *rec;
- u16 eth_proto = 0;
- u64 l3_offset = 0;
- u32 cpu_dest = 0;
- u32 *cpu_lookup;
- u32 cpu_idx = 0;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- if (!(parse_eth(eth, data_end, ð_proto, &l3_offset)))
- return XDP_PASS; /* Just skip */
-
- /* Extract L4 protocol */
- switch (eth_proto) {
- case ETH_P_IP:
- ip_proto = get_proto_ipv4(ctx, l3_offset);
- break;
- case ETH_P_IPV6:
- ip_proto = get_proto_ipv6(ctx, l3_offset);
- break;
- case ETH_P_ARP:
- cpu_idx = 0; /* ARP packet handled on separate CPU */
- break;
- default:
- cpu_idx = 0;
- }
-
- /* Choose CPU based on L4 protocol */
- switch (ip_proto) {
- case IPPROTO_ICMP:
- case IPPROTO_ICMPV6:
- cpu_idx = 2;
- break;
- case IPPROTO_TCP:
- cpu_idx = 0;
- break;
- case IPPROTO_UDP:
- cpu_idx = 1;
- break;
- default:
- cpu_idx = 0;
- }
-
- cpu_lookup = bpf_map_lookup_elem(&cpus_available, &cpu_idx);
- if (!cpu_lookup)
- return XDP_ABORTED;
- cpu_dest = *cpu_lookup;
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-SEC("xdp")
-int xdp_prognum4_ddos_filter_pktgen(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- u8 ip_proto = IPPROTO_UDP;
- struct datarec *rec;
- u16 eth_proto = 0;
- u64 l3_offset = 0;
- u32 cpu_dest = 0;
- u32 *cpu_lookup;
- u32 cpu_idx = 0;
- u16 dest_port;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- if (!(parse_eth(eth, data_end, ð_proto, &l3_offset)))
- return XDP_PASS; /* Just skip */
-
- /* Extract L4 protocol */
- switch (eth_proto) {
- case ETH_P_IP:
- ip_proto = get_proto_ipv4(ctx, l3_offset);
- break;
- case ETH_P_IPV6:
- ip_proto = get_proto_ipv6(ctx, l3_offset);
- break;
- case ETH_P_ARP:
- cpu_idx = 0; /* ARP packet handled on separate CPU */
- break;
- default:
- cpu_idx = 0;
- }
-
- /* Choose CPU based on L4 protocol */
- switch (ip_proto) {
- case IPPROTO_ICMP:
- case IPPROTO_ICMPV6:
- cpu_idx = 2;
- break;
- case IPPROTO_TCP:
- cpu_idx = 0;
- break;
- case IPPROTO_UDP:
- cpu_idx = 1;
- /* DDoS filter UDP port 9 (pktgen) */
- dest_port = get_dest_port_ipv4_udp(ctx, l3_offset);
- if (dest_port == 9) {
- NO_TEAR_INC(rec->dropped);
- return XDP_DROP;
- }
- break;
- default:
- cpu_idx = 0;
- }
-
- cpu_lookup = bpf_map_lookup_elem(&cpus_available, &cpu_idx);
- if (!cpu_lookup)
- return XDP_ABORTED;
- cpu_dest = *cpu_lookup;
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-/* Hashing initval */
-#define INITVAL 15485863
-
-static __always_inline
-u32 get_ipv4_hash_ip_pair(struct xdp_md *ctx, u64 nh_off)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct iphdr *iph = data + nh_off;
- u32 cpu_hash;
-
- if (iph + 1 > data_end)
- return 0;
-
- cpu_hash = iph->saddr + iph->daddr;
- cpu_hash = SuperFastHash((char *)&cpu_hash, 4, INITVAL + iph->protocol);
-
- return cpu_hash;
-}
-
-static __always_inline
-u32 get_ipv6_hash_ip_pair(struct xdp_md *ctx, u64 nh_off)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct ipv6hdr *ip6h = data + nh_off;
- u32 cpu_hash;
-
- if (ip6h + 1 > data_end)
- return 0;
-
- cpu_hash = ip6h->saddr.in6_u.u6_addr32[0] + ip6h->daddr.in6_u.u6_addr32[0];
- cpu_hash += ip6h->saddr.in6_u.u6_addr32[1] + ip6h->daddr.in6_u.u6_addr32[1];
- cpu_hash += ip6h->saddr.in6_u.u6_addr32[2] + ip6h->daddr.in6_u.u6_addr32[2];
- cpu_hash += ip6h->saddr.in6_u.u6_addr32[3] + ip6h->daddr.in6_u.u6_addr32[3];
- cpu_hash = SuperFastHash((char *)&cpu_hash, 4, INITVAL + ip6h->nexthdr);
-
- return cpu_hash;
-}
-
-/* Load-Balance traffic based on hashing IP-addrs + L4-proto. The
- * hashing scheme is symmetric, meaning swapping IP src/dest still hit
- * same CPU.
- */
-SEC("xdp")
-int xdp_prognum5_lb_hash_ip_pairs(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- struct datarec *rec;
- u16 eth_proto = 0;
- u64 l3_offset = 0;
- u32 cpu_dest = 0;
- u32 cpu_idx = 0;
- u32 *cpu_lookup;
- u32 key0 = 0;
- u32 *cpu_max;
- u32 cpu_hash;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- cpu_max = bpf_map_lookup_elem(&cpus_count, &key0);
- if (!cpu_max)
- return XDP_ABORTED;
-
- if (!(parse_eth(eth, data_end, ð_proto, &l3_offset)))
- return XDP_PASS; /* Just skip */
-
- /* Hash for IPv4 and IPv6 */
- switch (eth_proto) {
- case ETH_P_IP:
- cpu_hash = get_ipv4_hash_ip_pair(ctx, l3_offset);
- break;
- case ETH_P_IPV6:
- cpu_hash = get_ipv6_hash_ip_pair(ctx, l3_offset);
- break;
- case ETH_P_ARP: /* ARP packet handled on CPU idx 0 */
- default:
- cpu_hash = 0;
- }
-
- /* Choose CPU based on hash */
- cpu_idx = cpu_hash % *cpu_max;
-
- cpu_lookup = bpf_map_lookup_elem(&cpus_available, &cpu_idx);
- if (!cpu_lookup)
- return XDP_ABORTED;
- cpu_dest = *cpu_lookup;
-
- if (cpu_dest >= nr_cpus) {
- NO_TEAR_INC(rec->issue);
- return XDP_ABORTED;
- }
- return bpf_redirect_map(&cpu_map, cpu_dest, 0);
-}
-
-SEC("xdp/cpumap")
-int xdp_redirect_cpu_devmap(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct ethhdr *eth = data;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- swap_src_dst_mac(data);
- return bpf_redirect_map(&tx_port, 0, 0);
-}
-
-SEC("xdp/cpumap")
-int xdp_redirect_cpu_pass(struct xdp_md *ctx)
-{
- return XDP_PASS;
-}
-
-SEC("xdp/cpumap")
-int xdp_redirect_cpu_drop(struct xdp_md *ctx)
-{
- return XDP_DROP;
-}
-
-SEC("xdp/devmap")
-int xdp_redirect_egress_prog(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- struct ethhdr *eth = data;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- __builtin_memcpy(eth->h_source, (const char *)tx_mac_addr, ETH_ALEN);
-
- return XDP_PASS;
-}
-
-char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c
deleted file mode 100644
index e1458405e2ba..000000000000
--- a/samples/bpf/xdp_redirect_cpu_user.c
+++ /dev/null
@@ -1,559 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright(c) 2017 Jesper Dangaard Brouer, Red Hat, Inc.
- */
-static const char *__doc__ =
-"XDP CPU redirect tool, using BPF_MAP_TYPE_CPUMAP\n"
-"Usage: xdp_redirect_cpu -d <IFINDEX|IFNAME> -c 0 ... -c N\n"
-"Valid specification for CPUMAP BPF program:\n"
-" --mprog-name/-e pass (use built-in XDP_PASS program)\n"
-" --mprog-name/-e drop (use built-in XDP_DROP program)\n"
-" --redirect-device/-r <ifindex|ifname> (use built-in DEVMAP redirect program)\n"
-" Custom CPUMAP BPF program:\n"
-" --mprog-filename/-f <filename> --mprog-name/-e <program>\n"
-" Optionally, also pass --redirect-map/-m and --redirect-device/-r together\n"
-" to configure DEVMAP in BPF object <filename>\n";
-
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <unistd.h>
-#include <locale.h>
-#include <sys/sysinfo.h>
-#include <getopt.h>
-#include <net/if.h>
-#include <time.h>
-#include <linux/limits.h>
-#include <arpa/inet.h>
-#include <linux/if_link.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include "bpf_util.h"
-#include "xdp_sample_user.h"
-#include "xdp_redirect_cpu.skel.h"
-
-static int map_fd;
-static int avail_fd;
-static int count_fd;
-
-static int mask = SAMPLE_RX_CNT | SAMPLE_REDIRECT_ERR_MAP_CNT |
- SAMPLE_CPUMAP_ENQUEUE_CNT | SAMPLE_CPUMAP_KTHREAD_CNT |
- SAMPLE_EXCEPTION_CNT;
-
-DEFINE_SAMPLE_INIT(xdp_redirect_cpu);
-
-static const struct option long_options[] = {
- { "help", no_argument, NULL, 'h' },
- { "dev", required_argument, NULL, 'd' },
- { "skb-mode", no_argument, NULL, 'S' },
- { "progname", required_argument, NULL, 'p' },
- { "qsize", required_argument, NULL, 'q' },
- { "cpu", required_argument, NULL, 'c' },
- { "stress-mode", no_argument, NULL, 'x' },
- { "force", no_argument, NULL, 'F' },
- { "interval", required_argument, NULL, 'i' },
- { "verbose", no_argument, NULL, 'v' },
- { "stats", no_argument, NULL, 's' },
- { "mprog-name", required_argument, NULL, 'e' },
- { "mprog-filename", required_argument, NULL, 'f' },
- { "redirect-device", required_argument, NULL, 'r' },
- { "redirect-map", required_argument, NULL, 'm' },
- {}
-};
-
-static void print_avail_progs(struct bpf_object *obj)
-{
- struct bpf_program *pos;
-
- printf(" Programs to be used for -p/--progname:\n");
- bpf_object__for_each_program(pos, obj) {
- if (bpf_program__type(pos) == BPF_PROG_TYPE_XDP) {
- if (!strncmp(bpf_program__name(pos), "xdp_prognum",
- sizeof("xdp_prognum") - 1))
- printf(" %s\n", bpf_program__name(pos));
- }
- }
-}
-
-static void usage(char *argv[], const struct option *long_options,
- const char *doc, int mask, bool error, struct bpf_object *obj)
-{
- sample_usage(argv, long_options, doc, mask, error);
- print_avail_progs(obj);
-}
-
-static int create_cpu_entry(__u32 cpu, struct bpf_cpumap_val *value,
- __u32 avail_idx, bool new)
-{
- __u32 curr_cpus_count = 0;
- __u32 key = 0;
- int ret;
-
- /* Add a CPU entry to cpumap, as this allocate a cpu entry in
- * the kernel for the cpu.
- */
- ret = bpf_map_update_elem(map_fd, &cpu, value, 0);
- if (ret < 0) {
- fprintf(stderr, "Create CPU entry failed: %s\n", strerror(errno));
- return ret;
- }
-
- /* Inform bpf_prog's that a new CPU is available to select
- * from via some control maps.
- */
- ret = bpf_map_update_elem(avail_fd, &avail_idx, &cpu, 0);
- if (ret < 0) {
- fprintf(stderr, "Add to avail CPUs failed: %s\n", strerror(errno));
- return ret;
- }
-
- /* When not replacing/updating existing entry, bump the count */
- ret = bpf_map_lookup_elem(count_fd, &key, &curr_cpus_count);
- if (ret < 0) {
- fprintf(stderr, "Failed reading curr cpus_count: %s\n",
- strerror(errno));
- return ret;
- }
- if (new) {
- curr_cpus_count++;
- ret = bpf_map_update_elem(count_fd, &key,
- &curr_cpus_count, 0);
- if (ret < 0) {
- fprintf(stderr, "Failed write curr cpus_count: %s\n",
- strerror(errno));
- return ret;
- }
- }
-
- printf("%s CPU: %u as idx: %u qsize: %d cpumap_prog_fd: %d (cpus_count: %u)\n",
- new ? "Add new" : "Replace", cpu, avail_idx,
- value->qsize, value->bpf_prog.fd, curr_cpus_count);
-
- return 0;
-}
-
-/* CPUs are zero-indexed. Thus, add a special sentinel default value
- * in map cpus_available to mark CPU index'es not configured
- */
-static int mark_cpus_unavailable(void)
-{
- int ret, i, n_cpus = libbpf_num_possible_cpus();
- __u32 invalid_cpu = n_cpus;
-
- for (i = 0; i < n_cpus; i++) {
- ret = bpf_map_update_elem(avail_fd, &i,
- &invalid_cpu, 0);
- if (ret < 0) {
- fprintf(stderr, "Failed marking CPU unavailable: %s\n",
- strerror(errno));
- return ret;
- }
- }
-
- return 0;
-}
-
-/* Stress cpumap management code by concurrently changing underlying cpumap */
-static void stress_cpumap(void *ctx)
-{
- struct bpf_cpumap_val *value = ctx;
-
- /* Changing qsize will cause kernel to free and alloc a new
- * bpf_cpu_map_entry, with an associated/complicated tear-down
- * procedure.
- */
- value->qsize = 1024;
- create_cpu_entry(1, value, 0, false);
- value->qsize = 8;
- create_cpu_entry(1, value, 0, false);
- value->qsize = 16000;
- create_cpu_entry(1, value, 0, false);
-}
-
-static int set_cpumap_prog(struct xdp_redirect_cpu *skel,
- const char *redir_interface, const char *redir_map,
- const char *mprog_filename, const char *mprog_name)
-{
- if (mprog_filename) {
- struct bpf_program *prog;
- struct bpf_object *obj;
- int ret;
-
- if (!mprog_name) {
- fprintf(stderr, "BPF program not specified for file %s\n",
- mprog_filename);
- goto end;
- }
- if ((redir_interface && !redir_map) || (!redir_interface && redir_map)) {
- fprintf(stderr, "--redirect-%s specified but --redirect-%s not specified\n",
- redir_interface ? "device" : "map", redir_interface ? "map" : "device");
- goto end;
- }
-
- /* Custom BPF program */
- obj = bpf_object__open_file(mprog_filename, NULL);
- if (!obj) {
- ret = -errno;
- fprintf(stderr, "Failed to bpf_prog_load_xattr: %s\n",
- strerror(errno));
- return ret;
- }
-
- ret = bpf_object__load(obj);
- if (ret < 0) {
- ret = -errno;
- fprintf(stderr, "Failed to bpf_object__load: %s\n",
- strerror(errno));
- return ret;
- }
-
- if (redir_map) {
- int err, redir_map_fd, ifindex_out, key = 0;
-
- redir_map_fd = bpf_object__find_map_fd_by_name(obj, redir_map);
- if (redir_map_fd < 0) {
- fprintf(stderr, "Failed to bpf_object__find_map_fd_by_name: %s\n",
- strerror(errno));
- return redir_map_fd;
- }
-
- ifindex_out = if_nametoindex(redir_interface);
- if (!ifindex_out)
- ifindex_out = strtoul(redir_interface, NULL, 0);
- if (!ifindex_out) {
- fprintf(stderr, "Bad interface name or index\n");
- return -EINVAL;
- }
-
- err = bpf_map_update_elem(redir_map_fd, &key, &ifindex_out, 0);
- if (err < 0)
- return err;
- }
-
- prog = bpf_object__find_program_by_name(obj, mprog_name);
- if (!prog) {
- ret = -errno;
- fprintf(stderr, "Failed to bpf_object__find_program_by_name: %s\n",
- strerror(errno));
- return ret;
- }
-
- return bpf_program__fd(prog);
- } else {
- if (mprog_name) {
- if (redir_interface || redir_map) {
- fprintf(stderr, "Need to specify --mprog-filename/-f\n");
- goto end;
- }
- if (!strcmp(mprog_name, "pass") || !strcmp(mprog_name, "drop")) {
- /* Use built-in pass/drop programs */
- return *mprog_name == 'p' ? bpf_program__fd(skel->progs.xdp_redirect_cpu_pass)
- : bpf_program__fd(skel->progs.xdp_redirect_cpu_drop);
- } else {
- fprintf(stderr, "Unknown name \"%s\" for built-in BPF program\n",
- mprog_name);
- goto end;
- }
- } else {
- if (redir_map) {
- fprintf(stderr, "Need to specify --mprog-filename, --mprog-name and"
- " --redirect-device with --redirect-map\n");
- goto end;
- }
- if (redir_interface) {
- /* Use built-in devmap redirect */
- struct bpf_devmap_val val = {};
- int ifindex_out, err;
- __u32 key = 0;
-
- if (!redir_interface)
- return 0;
-
- ifindex_out = if_nametoindex(redir_interface);
- if (!ifindex_out)
- ifindex_out = strtoul(redir_interface, NULL, 0);
- if (!ifindex_out) {
- fprintf(stderr, "Bad interface name or index\n");
- return -EINVAL;
- }
-
- if (get_mac_addr(ifindex_out, skel->bss->tx_mac_addr) < 0) {
- printf("Get interface %d mac failed\n", ifindex_out);
- return -EINVAL;
- }
-
- val.ifindex = ifindex_out;
- val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_redirect_egress_prog);
- err = bpf_map_update_elem(bpf_map__fd(skel->maps.tx_port), &key, &val, 0);
- if (err < 0)
- return -errno;
-
- return bpf_program__fd(skel->progs.xdp_redirect_cpu_devmap);
- }
- }
- }
-
- /* Disabled */
- return 0;
-end:
- fprintf(stderr, "Invalid options for CPUMAP BPF program\n");
- return -EINVAL;
-}
-
-int main(int argc, char **argv)
-{
- const char *redir_interface = NULL, *redir_map = NULL;
- const char *mprog_filename = NULL, *mprog_name = NULL;
- struct xdp_redirect_cpu *skel;
- struct bpf_map_info info = {};
- struct bpf_cpumap_val value;
- __u32 infosz = sizeof(info);
- int ret = EXIT_FAIL_OPTION;
- unsigned long interval = 2;
- bool stress_mode = false;
- struct bpf_program *prog;
- const char *prog_name;
- bool generic = false;
- bool force = false;
- int added_cpus = 0;
- bool error = true;
- int longindex = 0;
- int add_cpu = -1;
- int ifindex = -1;
- int *cpu, i, opt;
- __u32 qsize;
- int n_cpus;
-
- n_cpus = libbpf_num_possible_cpus();
-
- /* Notice: Choosing the queue size is very important when CPU is
- * configured with power-saving states.
- *
- * If deepest state take 133 usec to wakeup from (133/10^6). When link
- * speed is 10Gbit/s ((10*10^9/8) in bytes/sec). How many bytes can
- * arrive with in 133 usec at this speed: (10*10^9/8)*(133/10^6) =
- * 166250 bytes. With MTU size packets this is 110 packets, and with
- * minimum Ethernet (MAC-preamble + intergap) 84 bytes is 1979 packets.
- *
- * Setting default cpumap queue to 2048 as worst-case (small packet)
- * should be +64 packet due kthread wakeup call (due to xdp_do_flush)
- * worst-case is 2043 packets.
- *
- * Sysadm can configured system to avoid deep-sleep via:
- * tuned-adm profile network-latency
- */
- qsize = 2048;
-
- skel = xdp_redirect_cpu__open();
- if (!skel) {
- fprintf(stderr, "Failed to xdp_redirect_cpu__open: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end;
- }
-
- ret = sample_init_pre_load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- if (bpf_map__set_max_entries(skel->maps.cpu_map, n_cpus) < 0) {
- fprintf(stderr, "Failed to set max entries for cpu_map map: %s",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- if (bpf_map__set_max_entries(skel->maps.cpus_available, n_cpus) < 0) {
- fprintf(stderr, "Failed to set max entries for cpus_available map: %s",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- cpu = calloc(n_cpus, sizeof(int));
- if (!cpu) {
- fprintf(stderr, "Failed to allocate cpu array\n");
- goto end_destroy;
- }
-
- prog = skel->progs.xdp_prognum5_lb_hash_ip_pairs;
- while ((opt = getopt_long(argc, argv, "d:si:Sxp:f:e:r:m:c:q:Fvh",
- long_options, &longindex)) != -1) {
- switch (opt) {
- case 'd':
- if (strlen(optarg) >= IF_NAMESIZE) {
- fprintf(stderr, "-d/--dev name too long\n");
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
- ifindex = if_nametoindex(optarg);
- if (!ifindex)
- ifindex = strtoul(optarg, NULL, 0);
- if (!ifindex) {
- fprintf(stderr, "Bad interface index or name (%d): %s\n",
- errno, strerror(errno));
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
- break;
- case 's':
- mask |= SAMPLE_REDIRECT_MAP_CNT;
- break;
- case 'i':
- interval = strtoul(optarg, NULL, 0);
- break;
- case 'S':
- generic = true;
- break;
- case 'x':
- stress_mode = true;
- break;
- case 'p':
- /* Selecting eBPF prog to load */
- prog_name = optarg;
- prog = bpf_object__find_program_by_name(skel->obj,
- prog_name);
- if (!prog) {
- fprintf(stderr,
- "Failed to find program %s specified by"
- " option -p/--progname\n",
- prog_name);
- print_avail_progs(skel->obj);
- goto end_cpu;
- }
- break;
- case 'f':
- mprog_filename = optarg;
- break;
- case 'e':
- mprog_name = optarg;
- break;
- case 'r':
- redir_interface = optarg;
- mask |= SAMPLE_DEVMAP_XMIT_CNT_MULTI;
- break;
- case 'm':
- redir_map = optarg;
- break;
- case 'c':
- /* Add multiple CPUs */
- add_cpu = strtoul(optarg, NULL, 0);
- if (add_cpu >= n_cpus) {
- fprintf(stderr,
- "--cpu nr too large for cpumap err (%d):%s\n",
- errno, strerror(errno));
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
- cpu[added_cpus++] = add_cpu;
- break;
- case 'q':
- qsize = strtoul(optarg, NULL, 0);
- break;
- case 'F':
- force = true;
- break;
- case 'v':
- sample_switch_mode();
- break;
- case 'h':
- error = false;
- default:
- usage(argv, long_options, __doc__, mask, error, skel->obj);
- goto end_cpu;
- }
- }
-
- ret = EXIT_FAIL_OPTION;
- if (ifindex == -1) {
- fprintf(stderr, "Required option --dev missing\n");
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
-
- if (add_cpu == -1) {
- fprintf(stderr, "Required option --cpu missing\n"
- "Specify multiple --cpu option to add more\n");
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
-
- skel->rodata->from_match[0] = ifindex;
- if (redir_interface)
- skel->rodata->to_match[0] = if_nametoindex(redir_interface);
-
- ret = xdp_redirect_cpu__load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to xdp_redirect_cpu__load: %s\n",
- strerror(errno));
- goto end_cpu;
- }
-
- ret = bpf_map_get_info_by_fd(bpf_map__fd(skel->maps.cpu_map), &info, &infosz);
- if (ret < 0) {
- fprintf(stderr, "Failed bpf_map_get_info_by_fd for cpumap: %s\n",
- strerror(errno));
- goto end_cpu;
- }
-
- skel->bss->cpumap_map_id = info.id;
-
- map_fd = bpf_map__fd(skel->maps.cpu_map);
- avail_fd = bpf_map__fd(skel->maps.cpus_available);
- count_fd = bpf_map__fd(skel->maps.cpus_count);
-
- ret = mark_cpus_unavailable();
- if (ret < 0) {
- fprintf(stderr, "Unable to mark CPUs as unavailable\n");
- goto end_cpu;
- }
-
- ret = sample_init(skel, mask);
- if (ret < 0) {
- fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_cpu;
- }
-
- value.bpf_prog.fd = set_cpumap_prog(skel, redir_interface, redir_map,
- mprog_filename, mprog_name);
- if (value.bpf_prog.fd < 0) {
- fprintf(stderr, "Failed to set CPUMAP BPF program: %s\n",
- strerror(-value.bpf_prog.fd));
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- ret = EXIT_FAIL_BPF;
- goto end_cpu;
- }
- value.qsize = qsize;
-
- for (i = 0; i < added_cpus; i++) {
- if (create_cpu_entry(cpu[i], &value, i, true) < 0) {
- fprintf(stderr, "Cannot proceed, exiting\n");
- usage(argv, long_options, __doc__, mask, true, skel->obj);
- goto end_cpu;
- }
- }
-
- ret = EXIT_FAIL_XDP;
- if (sample_install_xdp(prog, ifindex, generic, force) < 0)
- goto end_cpu;
-
- ret = sample_run(interval, stress_mode ? stress_cpumap : NULL, &value);
- if (ret < 0) {
- fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_cpu;
- }
- ret = EXIT_OK;
-end_cpu:
- free(cpu);
-end_destroy:
- xdp_redirect_cpu__destroy(skel);
-end:
- sample_exit(ret);
-}
diff --git a/samples/bpf/xdp_redirect_map.bpf.c b/samples/bpf/xdp_redirect_map.bpf.c
deleted file mode 100644
index 8557c278df77..000000000000
--- a/samples/bpf/xdp_redirect_map.bpf.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/* Copyright (c) 2017 Covalent IO, Inc. http://covalent.io
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#define KBUILD_MODNAME "foo"
-
-#include "vmlinux.h"
-#include "xdp_sample.bpf.h"
-#include "xdp_sample_shared.h"
-
-/* The 2nd xdp prog on egress does not support skb mode, so we define two
- * maps, tx_port_general and tx_port_native.
- */
-struct {
- __uint(type, BPF_MAP_TYPE_DEVMAP);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(int));
- __uint(max_entries, 1);
-} tx_port_general SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_DEVMAP);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(struct bpf_devmap_val));
- __uint(max_entries, 1);
-} tx_port_native SEC(".maps");
-
-/* store egress interface mac address */
-const volatile __u8 tx_mac_addr[ETH_ALEN];
-
-static __always_inline int xdp_redirect_map(struct xdp_md *ctx, void *redirect_map)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = bpf_get_smp_processor_id();
- struct ethhdr *eth = data;
- struct datarec *rec;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
- swap_src_dst_mac(data);
- return bpf_redirect_map(redirect_map, 0, 0);
-}
-
-SEC("xdp")
-int xdp_redirect_map_general(struct xdp_md *ctx)
-{
- return xdp_redirect_map(ctx, &tx_port_general);
-}
-
-SEC("xdp")
-int xdp_redirect_map_native(struct xdp_md *ctx)
-{
- return xdp_redirect_map(ctx, &tx_port_native);
-}
-
-SEC("xdp/devmap")
-int xdp_redirect_map_egress(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u8 *mac_addr = (u8 *) tx_mac_addr;
- struct ethhdr *eth = data;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- barrier_var(mac_addr); /* prevent optimizing out memcpy */
- __builtin_memcpy(eth->h_source, mac_addr, ETH_ALEN);
-
- return XDP_PASS;
-}
-
-/* Redirect require an XDP bpf_prog loaded on the TX device */
-SEC("xdp")
-int xdp_redirect_dummy_prog(struct xdp_md *ctx)
-{
- return XDP_PASS;
-}
-
-char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/xdp_redirect_map_multi.bpf.c b/samples/bpf/xdp_redirect_map_multi.bpf.c
deleted file mode 100644
index 8b2fd4ec2c76..000000000000
--- a/samples/bpf/xdp_redirect_map_multi.bpf.c
+++ /dev/null
@@ -1,77 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#define KBUILD_MODNAME "foo"
-
-#include "vmlinux.h"
-#include "xdp_sample.bpf.h"
-#include "xdp_sample_shared.h"
-
-struct {
- __uint(type, BPF_MAP_TYPE_DEVMAP_HASH);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(int));
- __uint(max_entries, 32);
-} forward_map_general SEC(".maps");
-
-struct {
- __uint(type, BPF_MAP_TYPE_DEVMAP_HASH);
- __uint(key_size, sizeof(int));
- __uint(value_size, sizeof(struct bpf_devmap_val));
- __uint(max_entries, 32);
-} forward_map_native SEC(".maps");
-
-/* map to store egress interfaces mac addresses */
-struct {
- __uint(type, BPF_MAP_TYPE_HASH);
- __type(key, u32);
- __type(value, __be64);
- __uint(max_entries, 32);
-} mac_map SEC(".maps");
-
-static int xdp_redirect_map(struct xdp_md *ctx, void *forward_map)
-{
- u32 key = bpf_get_smp_processor_id();
- struct datarec *rec;
-
- rec = bpf_map_lookup_elem(&rx_cnt, &key);
- if (!rec)
- return XDP_PASS;
- NO_TEAR_INC(rec->processed);
-
- return bpf_redirect_map(forward_map, 0,
- BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS);
-}
-
-SEC("xdp")
-int xdp_redirect_map_general(struct xdp_md *ctx)
-{
- return xdp_redirect_map(ctx, &forward_map_general);
-}
-
-SEC("xdp")
-int xdp_redirect_map_native(struct xdp_md *ctx)
-{
- return xdp_redirect_map(ctx, &forward_map_native);
-}
-
-SEC("xdp/devmap")
-int xdp_devmap_prog(struct xdp_md *ctx)
-{
- void *data_end = (void *)(long)ctx->data_end;
- void *data = (void *)(long)ctx->data;
- u32 key = ctx->egress_ifindex;
- struct ethhdr *eth = data;
- __be64 *mac;
- u64 nh_off;
-
- nh_off = sizeof(*eth);
- if (data + nh_off > data_end)
- return XDP_DROP;
-
- mac = bpf_map_lookup_elem(&mac_map, &key);
- if (mac)
- __builtin_memcpy(eth->h_source, mac, ETH_ALEN);
-
- return XDP_PASS;
-}
-
-char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/xdp_redirect_map_multi_user.c b/samples/bpf/xdp_redirect_map_multi_user.c
deleted file mode 100644
index 9e24f2705b67..000000000000
--- a/samples/bpf/xdp_redirect_map_multi_user.c
+++ /dev/null
@@ -1,232 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-static const char *__doc__ =
-"XDP multi redirect tool, using BPF_MAP_TYPE_DEVMAP and BPF_F_BROADCAST flag for bpf_redirect_map\n"
-"Usage: xdp_redirect_map_multi <IFINDEX|IFNAME> <IFINDEX|IFNAME> ... <IFINDEX|IFNAME>\n";
-
-#include <linux/bpf.h>
-#include <linux/if_link.h>
-#include <assert.h>
-#include <getopt.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <linux/if_ether.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include "bpf_util.h"
-#include "xdp_sample_user.h"
-#include "xdp_redirect_map_multi.skel.h"
-
-#define MAX_IFACE_NUM 32
-static int ifaces[MAX_IFACE_NUM] = {};
-
-static int mask = SAMPLE_RX_CNT | SAMPLE_REDIRECT_ERR_MAP_CNT |
- SAMPLE_EXCEPTION_CNT | SAMPLE_DEVMAP_XMIT_CNT |
- SAMPLE_DEVMAP_XMIT_CNT_MULTI | SAMPLE_SKIP_HEADING;
-
-DEFINE_SAMPLE_INIT(xdp_redirect_map_multi);
-
-static const struct option long_options[] = {
- { "help", no_argument, NULL, 'h' },
- { "skb-mode", no_argument, NULL, 'S' },
- { "force", no_argument, NULL, 'F' },
- { "load-egress", no_argument, NULL, 'X' },
- { "stats", no_argument, NULL, 's' },
- { "interval", required_argument, NULL, 'i' },
- { "verbose", no_argument, NULL, 'v' },
- {}
-};
-
-static int update_mac_map(struct bpf_map *map)
-{
- int mac_map_fd = bpf_map__fd(map);
- unsigned char mac_addr[6];
- unsigned int ifindex;
- int i, ret = -1;
-
- for (i = 0; ifaces[i] > 0; i++) {
- ifindex = ifaces[i];
-
- ret = get_mac_addr(ifindex, mac_addr);
- if (ret < 0) {
- fprintf(stderr, "get interface %d mac failed\n",
- ifindex);
- return ret;
- }
-
- ret = bpf_map_update_elem(mac_map_fd, &ifindex, mac_addr, 0);
- if (ret < 0) {
- fprintf(stderr, "Failed to update mac address for ifindex %d\n",
- ifindex);
- return ret;
- }
- }
-
- return 0;
-}
-
-int main(int argc, char **argv)
-{
- struct bpf_devmap_val devmap_val = {};
- struct xdp_redirect_map_multi *skel;
- struct bpf_program *ingress_prog;
- bool xdp_devmap_attached = false;
- struct bpf_map *forward_map;
- int ret = EXIT_FAIL_OPTION;
- unsigned long interval = 2;
- char ifname[IF_NAMESIZE];
- unsigned int ifindex;
- bool generic = false;
- bool force = false;
- bool tried = false;
- bool error = true;
- int i, opt;
-
- while ((opt = getopt_long(argc, argv, "hSFXi:vs",
- long_options, NULL)) != -1) {
- switch (opt) {
- case 'S':
- generic = true;
- /* devmap_xmit tracepoint not available */
- mask &= ~(SAMPLE_DEVMAP_XMIT_CNT |
- SAMPLE_DEVMAP_XMIT_CNT_MULTI);
- break;
- case 'F':
- force = true;
- break;
- case 'X':
- xdp_devmap_attached = true;
- break;
- case 'i':
- interval = strtoul(optarg, NULL, 0);
- break;
- case 'v':
- sample_switch_mode();
- break;
- case 's':
- mask |= SAMPLE_REDIRECT_MAP_CNT;
- break;
- case 'h':
- error = false;
- default:
- sample_usage(argv, long_options, __doc__, mask, error);
- return ret;
- }
- }
-
- if (argc <= optind + 1) {
- sample_usage(argv, long_options, __doc__, mask, error);
- return ret;
- }
-
- skel = xdp_redirect_map_multi__open();
- if (!skel) {
- fprintf(stderr, "Failed to xdp_redirect_map_multi__open: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end;
- }
-
- ret = sample_init_pre_load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- ret = EXIT_FAIL_OPTION;
- for (i = 0; i < MAX_IFACE_NUM && argv[optind + i]; i++) {
- ifaces[i] = if_nametoindex(argv[optind + i]);
- if (!ifaces[i])
- ifaces[i] = strtoul(argv[optind + i], NULL, 0);
- if (!if_indextoname(ifaces[i], ifname)) {
- fprintf(stderr, "Bad interface index or name\n");
- sample_usage(argv, long_options, __doc__, mask, true);
- goto end_destroy;
- }
-
- skel->rodata->from_match[i] = ifaces[i];
- skel->rodata->to_match[i] = ifaces[i];
- }
-
- ret = xdp_redirect_map_multi__load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to xdp_redirect_map_multi__load: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- if (xdp_devmap_attached) {
- /* Update mac_map with all egress interfaces' mac addr */
- if (update_mac_map(skel->maps.mac_map) < 0) {
- fprintf(stderr, "Updating mac address failed\n");
- ret = EXIT_FAIL;
- goto end_destroy;
- }
- }
-
- ret = sample_init(skel, mask);
- if (ret < 0) {
- fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
-
- ingress_prog = skel->progs.xdp_redirect_map_native;
- forward_map = skel->maps.forward_map_native;
-
- for (i = 0; ifaces[i] > 0; i++) {
- ifindex = ifaces[i];
-
- ret = EXIT_FAIL_XDP;
-restart:
- /* bind prog_fd to each interface */
- if (sample_install_xdp(ingress_prog, ifindex, generic, force) < 0) {
- if (generic && !tried) {
- fprintf(stderr,
- "Trying fallback to sizeof(int) as value_size for devmap in generic mode\n");
- ingress_prog = skel->progs.xdp_redirect_map_general;
- forward_map = skel->maps.forward_map_general;
- tried = true;
- goto restart;
- }
- goto end_destroy;
- }
-
- /* Add all the interfaces to forward group and attach
- * egress devmap program if exist
- */
- devmap_val.ifindex = ifindex;
- if (xdp_devmap_attached)
- devmap_val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_devmap_prog);
- ret = bpf_map_update_elem(bpf_map__fd(forward_map), &ifindex, &devmap_val, 0);
- if (ret < 0) {
- fprintf(stderr, "Failed to update devmap value: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
- }
-
- ret = sample_run(interval, NULL, NULL);
- if (ret < 0) {
- fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
- ret = EXIT_OK;
-end_destroy:
- xdp_redirect_map_multi__destroy(skel);
-end:
- sample_exit(ret);
-}
diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c
deleted file mode 100644
index c889a1394dc1..000000000000
--- a/samples/bpf/xdp_redirect_map_user.c
+++ /dev/null
@@ -1,228 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2017 Covalent IO, Inc. http://covalent.io
- */
-static const char *__doc__ =
-"XDP redirect tool, using BPF_MAP_TYPE_DEVMAP\n"
-"Usage: xdp_redirect_map <IFINDEX|IFNAME>_IN <IFINDEX|IFNAME>_OUT\n";
-
-#include <linux/bpf.h>
-#include <linux/if_link.h>
-#include <assert.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <getopt.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include "bpf_util.h"
-#include "xdp_sample_user.h"
-#include "xdp_redirect_map.skel.h"
-
-static int mask = SAMPLE_RX_CNT | SAMPLE_REDIRECT_ERR_MAP_CNT |
- SAMPLE_EXCEPTION_CNT | SAMPLE_DEVMAP_XMIT_CNT_MULTI;
-
-DEFINE_SAMPLE_INIT(xdp_redirect_map);
-
-static const struct option long_options[] = {
- { "help", no_argument, NULL, 'h' },
- { "skb-mode", no_argument, NULL, 'S' },
- { "force", no_argument, NULL, 'F' },
- { "load-egress", no_argument, NULL, 'X' },
- { "stats", no_argument, NULL, 's' },
- { "interval", required_argument, NULL, 'i' },
- { "verbose", no_argument, NULL, 'v' },
- {}
-};
-
-static int verbose = 0;
-
-int main(int argc, char **argv)
-{
- struct bpf_devmap_val devmap_val = {};
- bool xdp_devmap_attached = false;
- struct xdp_redirect_map *skel;
- char str[2 * IF_NAMESIZE + 1];
- char ifname_out[IF_NAMESIZE];
- struct bpf_map *tx_port_map;
- char ifname_in[IF_NAMESIZE];
- int ifindex_in, ifindex_out;
- unsigned long interval = 2;
- int ret = EXIT_FAIL_OPTION;
- struct bpf_program *prog;
- bool generic = false;
- bool force = false;
- bool tried = false;
- bool error = true;
- int opt, key = 0;
-
- while ((opt = getopt_long(argc, argv, "hSFXi:vs",
- long_options, NULL)) != -1) {
- switch (opt) {
- case 'S':
- generic = true;
- /* devmap_xmit tracepoint not available */
- mask &= ~(SAMPLE_DEVMAP_XMIT_CNT |
- SAMPLE_DEVMAP_XMIT_CNT_MULTI);
- break;
- case 'F':
- force = true;
- break;
- case 'X':
- xdp_devmap_attached = true;
- break;
- case 'i':
- interval = strtoul(optarg, NULL, 0);
- break;
- case 'v':
- sample_switch_mode();
- verbose = 1;
- break;
- case 's':
- mask |= SAMPLE_REDIRECT_MAP_CNT;
- break;
- case 'h':
- error = false;
- default:
- sample_usage(argv, long_options, __doc__, mask, error);
- return ret;
- }
- }
-
- if (argc <= optind + 1) {
- sample_usage(argv, long_options, __doc__, mask, true);
- goto end;
- }
-
- 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);
-
- if (!ifindex_in || !ifindex_out) {
- fprintf(stderr, "Bad interface index or name\n");
- sample_usage(argv, long_options, __doc__, mask, true);
- goto end;
- }
-
- skel = xdp_redirect_map__open();
- if (!skel) {
- fprintf(stderr, "Failed to xdp_redirect_map__open: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end;
- }
-
- ret = sample_init_pre_load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- /* Load 2nd xdp prog on egress. */
- if (xdp_devmap_attached) {
- ret = get_mac_addr(ifindex_out, skel->rodata->tx_mac_addr);
- if (ret < 0) {
- fprintf(stderr, "Failed to get interface %d mac address: %s\n",
- ifindex_out, strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
- if (verbose)
- printf("Egress ifindex:%d using src MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
- ifindex_out,
- skel->rodata->tx_mac_addr[0], skel->rodata->tx_mac_addr[1],
- skel->rodata->tx_mac_addr[2], skel->rodata->tx_mac_addr[3],
- skel->rodata->tx_mac_addr[4], skel->rodata->tx_mac_addr[5]);
- }
-
- skel->rodata->from_match[0] = ifindex_in;
- skel->rodata->to_match[0] = ifindex_out;
-
- ret = xdp_redirect_map__load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to xdp_redirect_map__load: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- ret = sample_init(skel, mask);
- if (ret < 0) {
- fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
-
- prog = skel->progs.xdp_redirect_map_native;
- tx_port_map = skel->maps.tx_port_native;
-restart:
- if (sample_install_xdp(prog, ifindex_in, generic, force) < 0) {
- /* First try with struct bpf_devmap_val as value for generic
- * mode, then fallback to sizeof(int) for older kernels.
- */
- fprintf(stderr,
- "Trying fallback to sizeof(int) as value_size for devmap in generic mode\n");
- if (generic && !tried) {
- prog = skel->progs.xdp_redirect_map_general;
- tx_port_map = skel->maps.tx_port_general;
- tried = true;
- goto restart;
- }
- ret = EXIT_FAIL_XDP;
- goto end_destroy;
- }
-
- /* Loading dummy XDP prog on out-device */
- sample_install_xdp(skel->progs.xdp_redirect_dummy_prog, ifindex_out, generic, force);
-
- devmap_val.ifindex = ifindex_out;
- if (xdp_devmap_attached)
- devmap_val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_redirect_map_egress);
- ret = bpf_map_update_elem(bpf_map__fd(tx_port_map), &key, &devmap_val, 0);
- if (ret < 0) {
- fprintf(stderr, "Failed to update devmap value: %s\n",
- strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- ret = EXIT_FAIL;
- if (!if_indextoname(ifindex_in, ifname_in)) {
- fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_in,
- strerror(errno));
- goto end_destroy;
- }
-
- if (!if_indextoname(ifindex_out, ifname_out)) {
- fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_out,
- strerror(errno));
- goto end_destroy;
- }
-
- safe_strncpy(str, get_driver_name(ifindex_in), sizeof(str));
- printf("Redirecting from %s (ifindex %d; driver %s) to %s (ifindex %d; driver %s)\n",
- ifname_in, ifindex_in, str, ifname_out, ifindex_out, get_driver_name(ifindex_out));
- snprintf(str, sizeof(str), "%s->%s", ifname_in, ifname_out);
-
- ret = sample_run(interval, NULL, NULL);
- if (ret < 0) {
- fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
- ret = EXIT_OK;
-end_destroy:
- xdp_redirect_map__destroy(skel);
-end:
- sample_exit(ret);
-}
diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c
deleted file mode 100644
index 8663dd631b6e..000000000000
--- a/samples/bpf/xdp_redirect_user.c
+++ /dev/null
@@ -1,172 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2016 John Fastabend <john.r.fastabend@...el.com>
- */
-static const char *__doc__ =
-"XDP redirect tool, using bpf_redirect helper\n"
-"Usage: xdp_redirect <IFINDEX|IFNAME>_IN <IFINDEX|IFNAME>_OUT\n";
-
-#include <linux/bpf.h>
-#include <linux/if_link.h>
-#include <assert.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <string.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <libgen.h>
-#include <getopt.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include "bpf_util.h"
-#include "xdp_sample_user.h"
-#include "xdp_redirect.skel.h"
-
-static int mask = SAMPLE_RX_CNT | SAMPLE_REDIRECT_ERR_CNT |
- SAMPLE_EXCEPTION_CNT | SAMPLE_DEVMAP_XMIT_CNT_MULTI;
-
-DEFINE_SAMPLE_INIT(xdp_redirect);
-
-static const struct option long_options[] = {
- {"help", no_argument, NULL, 'h' },
- {"skb-mode", no_argument, NULL, 'S' },
- {"force", no_argument, NULL, 'F' },
- {"stats", no_argument, NULL, 's' },
- {"interval", required_argument, NULL, 'i' },
- {"verbose", no_argument, NULL, 'v' },
- {}
-};
-
-int main(int argc, char **argv)
-{
- int ifindex_in, ifindex_out, opt;
- char str[2 * IF_NAMESIZE + 1];
- char ifname_out[IF_NAMESIZE];
- char ifname_in[IF_NAMESIZE];
- int ret = EXIT_FAIL_OPTION;
- unsigned long interval = 2;
- struct xdp_redirect *skel;
- bool generic = false;
- bool force = false;
- bool error = true;
-
- while ((opt = getopt_long(argc, argv, "hSFi:vs",
- long_options, NULL)) != -1) {
- switch (opt) {
- case 'S':
- generic = true;
- mask &= ~(SAMPLE_DEVMAP_XMIT_CNT |
- SAMPLE_DEVMAP_XMIT_CNT_MULTI);
- break;
- case 'F':
- force = true;
- break;
- case 'i':
- interval = strtoul(optarg, NULL, 0);
- break;
- case 'v':
- sample_switch_mode();
- break;
- case 's':
- mask |= SAMPLE_REDIRECT_CNT;
- break;
- case 'h':
- error = false;
- default:
- sample_usage(argv, long_options, __doc__, mask, error);
- return ret;
- }
- }
-
- if (argc <= optind + 1) {
- sample_usage(argv, long_options, __doc__, mask, true);
- return ret;
- }
-
- 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);
-
- if (!ifindex_in || !ifindex_out) {
- fprintf(stderr, "Bad interface index or name\n");
- sample_usage(argv, long_options, __doc__, mask, true);
- goto end;
- }
-
- skel = xdp_redirect__open();
- if (!skel) {
- fprintf(stderr, "Failed to xdp_redirect__open: %s\n", strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end;
- }
-
- ret = sample_init_pre_load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to sample_init_pre_load: %s\n", strerror(-ret));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- skel->rodata->from_match[0] = ifindex_in;
- skel->rodata->to_match[0] = ifindex_out;
- skel->rodata->ifindex_out = ifindex_out;
-
- ret = xdp_redirect__load(skel);
- if (ret < 0) {
- fprintf(stderr, "Failed to xdp_redirect__load: %s\n", strerror(errno));
- ret = EXIT_FAIL_BPF;
- goto end_destroy;
- }
-
- ret = sample_init(skel, mask);
- if (ret < 0) {
- fprintf(stderr, "Failed to initialize sample: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
-
- ret = EXIT_FAIL_XDP;
- if (sample_install_xdp(skel->progs.xdp_redirect_prog, ifindex_in,
- generic, force) < 0)
- goto end_destroy;
-
- /* Loading dummy XDP prog on out-device */
- sample_install_xdp(skel->progs.xdp_redirect_dummy_prog, ifindex_out,
- generic, force);
-
- ret = EXIT_FAIL;
- if (!if_indextoname(ifindex_in, ifname_in)) {
- fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_in,
- strerror(errno));
- goto end_destroy;
- }
-
- if (!if_indextoname(ifindex_out, ifname_out)) {
- fprintf(stderr, "Failed to if_indextoname for %d: %s\n", ifindex_out,
- strerror(errno));
- goto end_destroy;
- }
-
- safe_strncpy(str, get_driver_name(ifindex_in), sizeof(str));
- printf("Redirecting from %s (ifindex %d; driver %s) to %s (ifindex %d; driver %s)\n",
- ifname_in, ifindex_in, str, ifname_out, ifindex_out, get_driver_name(ifindex_out));
- snprintf(str, sizeof(str), "%s->%s", ifname_in, ifname_out);
-
- ret = sample_run(interval, NULL, NULL);
- if (ret < 0) {
- fprintf(stderr, "Failed during sample run: %s\n", strerror(-ret));
- ret = EXIT_FAIL;
- goto end_destroy;
- }
- ret = EXIT_OK;
-end_destroy:
- xdp_redirect__destroy(skel);
-end:
- sample_exit(ret);
-}
--
2.41.0
Powered by blists - more mailing lists