From 451d1dc886b548d6e18c933adca326c1307023c9 Mon Sep 17 00:00:00 2001 From: "Daniel T. Lee" Date: Thu, 7 Nov 2019 09:51:53 +0900 Subject: [PATCH] samples: bpf: update map definition to new syntax BTF-defined map Since, the new syntax of BTF-defined map has been introduced, the syntax for using maps under samples directory are mixed up. For example, some are already using the new syntax, and some are using existing syntax by calling them as 'legacy'. As stated at commit abd29c931459 ("libbpf: allow specifying map definitions using BTF"), the BTF-defined map has more compatablility with extending supported map definition features. The commit doesn't replace all of the map to new BTF-defined map, because some of the samples still use bpf_load instead of libbpf, which can't properly create BTF-defined map. This will only updates the samples which uses libbpf API for loading bpf program. (ex. bpf_prog_load_xattr) Signed-off-by: Daniel T. Lee Acked-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov --- samples/bpf/sockex1_kern.c | 12 ++-- samples/bpf/sockex2_kern.c | 12 ++-- samples/bpf/xdp1_kern.c | 12 ++-- samples/bpf/xdp2_kern.c | 12 ++-- samples/bpf/xdp_adjust_tail_kern.c | 12 ++-- samples/bpf/xdp_fwd_kern.c | 13 ++-- samples/bpf/xdp_redirect_cpu_kern.c | 108 ++++++++++++++-------------- samples/bpf/xdp_redirect_kern.c | 24 +++---- samples/bpf/xdp_redirect_map_kern.c | 24 +++---- samples/bpf/xdp_router_ipv4_kern.c | 64 ++++++++--------- samples/bpf/xdp_rxq_info_kern.c | 37 +++++----- samples/bpf/xdp_tx_iptunnel_kern.c | 26 +++---- 12 files changed, 178 insertions(+), 178 deletions(-) diff --git a/samples/bpf/sockex1_kern.c b/samples/bpf/sockex1_kern.c index f96943f443abc..2408dbfb7a216 100644 --- a/samples/bpf/sockex1_kern.c +++ b/samples/bpf/sockex1_kern.c @@ -5,12 +5,12 @@ #include "bpf_helpers.h" #include "bpf_legacy.h" -struct bpf_map_def SEC("maps") my_map = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(long), - .max_entries = 256, -}; +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __type(key, u32); + __type(value, long); + __uint(max_entries, 256); +} my_map SEC(".maps"); SEC("socket1") int bpf_prog1(struct __sk_buff *skb) diff --git a/samples/bpf/sockex2_kern.c b/samples/bpf/sockex2_kern.c index 5566fa7d92fa6..a7bcd03bf5294 100644 --- a/samples/bpf/sockex2_kern.c +++ b/samples/bpf/sockex2_kern.c @@ -190,12 +190,12 @@ struct pair { long bytes; }; -struct bpf_map_def SEC("maps") hash_map = { - .type = BPF_MAP_TYPE_HASH, - .key_size = sizeof(__be32), - .value_size = sizeof(struct pair), - .max_entries = 1024, -}; +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __type(key, __be32); + __type(value, struct pair); + __uint(max_entries, 1024); +} hash_map SEC(".maps"); SEC("socket2") int bpf_prog2(struct __sk_buff *skb) diff --git a/samples/bpf/xdp1_kern.c b/samples/bpf/xdp1_kern.c index 219742106bfdc..db6870aee42c0 100644 --- a/samples/bpf/xdp1_kern.c +++ b/samples/bpf/xdp1_kern.c @@ -14,12 +14,12 @@ #include #include "bpf_helpers.h" -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(long), - .max_entries = 256, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, long); + __uint(max_entries, 256); +} rxcnt SEC(".maps"); static int parse_ipv4(void *data, u64 nh_off, void *data_end) { diff --git a/samples/bpf/xdp2_kern.c b/samples/bpf/xdp2_kern.c index e01288867d155..c74b52c6d9459 100644 --- a/samples/bpf/xdp2_kern.c +++ b/samples/bpf/xdp2_kern.c @@ -14,12 +14,12 @@ #include #include "bpf_helpers.h" -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(long), - .max_entries = 256, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, long); + __uint(max_entries, 256); +} rxcnt SEC(".maps"); static void swap_src_dst_mac(void *data) { diff --git a/samples/bpf/xdp_adjust_tail_kern.c b/samples/bpf/xdp_adjust_tail_kern.c index c616508befb98..0f707e0fb3755 100644 --- a/samples/bpf/xdp_adjust_tail_kern.c +++ b/samples/bpf/xdp_adjust_tail_kern.c @@ -28,12 +28,12 @@ /* volatile to prevent compiler optimizations */ static volatile __u32 max_pcktsz = MAX_PCKT_SIZE; -struct bpf_map_def SEC("maps") icmpcnt = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(__u32), - .value_size = sizeof(__u64), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __type(key, __u32); + __type(value, __u64); + __uint(max_entries, 1); +} icmpcnt SEC(".maps"); static __always_inline void count_icmp(void) { diff --git a/samples/bpf/xdp_fwd_kern.c b/samples/bpf/xdp_fwd_kern.c index 701a30f258b17..d013029aeaa2a 100644 --- a/samples/bpf/xdp_fwd_kern.c +++ b/samples/bpf/xdp_fwd_kern.c @@ -23,13 +23,12 @@ #define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF) -/* For TX-traffic redirect requires net_device ifindex to be in this devmap */ -struct bpf_map_def SEC("maps") xdp_tx_ports = { - .type = BPF_MAP_TYPE_DEVMAP, - .key_size = sizeof(int), - .value_size = sizeof(int), - .max_entries = 64, -}; +struct { + __uint(type, BPF_MAP_TYPE_DEVMAP); + __uint(key_size, sizeof(int)); + __uint(value_size, sizeof(int)); + __uint(max_entries, 64); +} xdp_tx_ports SEC(".maps"); /* from include/net/ip.h */ static __always_inline int ip_decrease_ttl(struct iphdr *iph) diff --git a/samples/bpf/xdp_redirect_cpu_kern.c b/samples/bpf/xdp_redirect_cpu_kern.c index a306d1c756227..cfcc31e511978 100644 --- a/samples/bpf/xdp_redirect_cpu_kern.c +++ b/samples/bpf/xdp_redirect_cpu_kern.c @@ -18,12 +18,12 @@ #define MAX_CPUS 64 /* WARNING - sync with _user.c */ /* Special map type that can XDP_REDIRECT frames to another CPU */ -struct bpf_map_def SEC("maps") cpu_map = { - .type = BPF_MAP_TYPE_CPUMAP, - .key_size = sizeof(u32), - .value_size = sizeof(u32), - .max_entries = MAX_CPUS, -}; +struct { + __uint(type, BPF_MAP_TYPE_CPUMAP); + __uint(key_size, sizeof(u32)); + __uint(value_size, sizeof(u32)); + __uint(max_entries, MAX_CPUS); +} cpu_map SEC(".maps"); /* Common stats data record to keep userspace more simple */ struct datarec { @@ -35,67 +35,67 @@ struct datarec { /* Count RX packets, as XDP bpf_prog doesn't get direct TX-success * feedback. Redirect TX errors can be caught via a tracepoint. */ -struct bpf_map_def SEC("maps") rx_cnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, 1); +} rx_cnt SEC(".maps"); /* Used by trace point */ -struct bpf_map_def SEC("maps") redirect_err_cnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = 2, +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, 2); /* TODO: have entries for all possible errno's */ -}; +} redirect_err_cnt SEC(".maps"); /* Used by trace point */ -struct bpf_map_def SEC("maps") cpumap_enqueue_cnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = MAX_CPUS, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, MAX_CPUS); +} cpumap_enqueue_cnt SEC(".maps"); /* Used by trace point */ -struct bpf_map_def SEC("maps") cpumap_kthread_cnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, 1); +} cpumap_kthread_cnt SEC(".maps"); /* Set of maps controlling available CPU, and for iterating through * selectable redirect CPUs. */ -struct bpf_map_def SEC("maps") cpus_available = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u32), - .max_entries = MAX_CPUS, -}; -struct bpf_map_def SEC("maps") cpus_count = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u32), - .max_entries = 1, -}; -struct bpf_map_def SEC("maps") cpus_iterator = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u32), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __type(key, u32); + __type(value, u32); + __uint(max_entries, MAX_CPUS); +} 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"); /* Used by trace point */ -struct bpf_map_def SEC("maps") exception_cnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, 1); +} exception_cnt SEC(".maps"); /* Helper parse functions */ diff --git a/samples/bpf/xdp_redirect_kern.c b/samples/bpf/xdp_redirect_kern.c index 8abb151e385f9..1f0b7d05abb2f 100644 --- a/samples/bpf/xdp_redirect_kern.c +++ b/samples/bpf/xdp_redirect_kern.c @@ -19,22 +19,22 @@ #include #include "bpf_helpers.h" -struct bpf_map_def SEC("maps") tx_port = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(int), - .value_size = sizeof(int), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __type(key, int); + __type(value, int); + __uint(max_entries, 1); +} tx_port SEC(".maps"); /* Count RX packets, as XDP bpf_prog doesn't get direct TX-success * feedback. Redirect TX errors can be caught via a tracepoint. */ -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(long), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, long); + __uint(max_entries, 1); +} rxcnt SEC(".maps"); static void swap_src_dst_mac(void *data) { diff --git a/samples/bpf/xdp_redirect_map_kern.c b/samples/bpf/xdp_redirect_map_kern.c index 740a529ba84f2..4631b484c4320 100644 --- a/samples/bpf/xdp_redirect_map_kern.c +++ b/samples/bpf/xdp_redirect_map_kern.c @@ -19,22 +19,22 @@ #include #include "bpf_helpers.h" -struct bpf_map_def SEC("maps") tx_port = { - .type = BPF_MAP_TYPE_DEVMAP, - .key_size = sizeof(int), - .value_size = sizeof(int), - .max_entries = 100, -}; +struct { + __uint(type, BPF_MAP_TYPE_DEVMAP); + __uint(key_size, sizeof(int)); + __uint(value_size, sizeof(int)); + __uint(max_entries, 100); +} tx_port SEC(".maps"); /* Count RX packets, as XDP bpf_prog doesn't get direct TX-success * feedback. Redirect TX errors can be caught via a tracepoint. */ -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(long), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, long); + __uint(max_entries, 1); +} rxcnt SEC(".maps"); static void swap_src_dst_mac(void *data) { diff --git a/samples/bpf/xdp_router_ipv4_kern.c b/samples/bpf/xdp_router_ipv4_kern.c index 993f56bc7b9a8..bf11efc8e9494 100644 --- a/samples/bpf/xdp_router_ipv4_kern.c +++ b/samples/bpf/xdp_router_ipv4_kern.c @@ -42,44 +42,44 @@ struct direct_map { }; /* Map for trie implementation*/ -struct bpf_map_def SEC("maps") lpm_map = { - .type = BPF_MAP_TYPE_LPM_TRIE, - .key_size = 8, - .value_size = sizeof(struct trie_value), - .max_entries = 50, - .map_flags = BPF_F_NO_PREALLOC, -}; +struct { + __uint(type, BPF_MAP_TYPE_LPM_TRIE); + __uint(key_size, 8); + __uint(value_size, sizeof(struct trie_value)); + __uint(max_entries, 50); + __uint(map_flags, BPF_F_NO_PREALLOC); +} lpm_map SEC(".maps"); /* Map for counter*/ -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(u64), - .max_entries = 256, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, u64); + __uint(max_entries, 256); +} rxcnt SEC(".maps"); /* Map for ARP table*/ -struct bpf_map_def SEC("maps") arp_table = { - .type = BPF_MAP_TYPE_HASH, - .key_size = sizeof(__be32), - .value_size = sizeof(__be64), - .max_entries = 50, -}; +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __type(key, __be32); + __type(value, __be64); + __uint(max_entries, 50); +} arp_table SEC(".maps"); /* Map to keep the exact match entries in the route table*/ -struct bpf_map_def SEC("maps") exact_match = { - .type = BPF_MAP_TYPE_HASH, - .key_size = sizeof(__be32), - .value_size = sizeof(struct direct_map), - .max_entries = 50, -}; - -struct bpf_map_def SEC("maps") tx_port = { - .type = BPF_MAP_TYPE_DEVMAP, - .key_size = sizeof(int), - .value_size = sizeof(int), - .max_entries = 100, -}; +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __type(key, __be32); + __type(value, struct direct_map); + __uint(max_entries, 50); +} exact_match SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_DEVMAP); + __uint(key_size, sizeof(int)); + __uint(value_size, sizeof(int)); + __uint(max_entries, 100); +} tx_port SEC(".maps"); /* Function to set source and destination mac of the packet */ static inline void set_src_dst_mac(void *data, void *src, void *dst) diff --git a/samples/bpf/xdp_rxq_info_kern.c b/samples/bpf/xdp_rxq_info_kern.c index 222a83eed1cbf..272d0f82a6b56 100644 --- a/samples/bpf/xdp_rxq_info_kern.c +++ b/samples/bpf/xdp_rxq_info_kern.c @@ -23,12 +23,13 @@ enum cfg_options_flags { READ_MEM = 0x1U, SWAP_MAC = 0x2U, }; -struct bpf_map_def SEC("maps") config_map = { - .type = BPF_MAP_TYPE_ARRAY, - .key_size = sizeof(int), - .value_size = sizeof(struct config), - .max_entries = 1, -}; + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __type(key, int); + __type(value, struct config); + __uint(max_entries, 1); +} config_map SEC(".maps"); /* Common stats data record (shared with userspace) */ struct datarec { @@ -36,22 +37,22 @@ struct datarec { __u64 issue; }; -struct bpf_map_def SEC("maps") stats_global_map = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, 1); +} stats_global_map SEC(".maps"); #define MAX_RXQs 64 /* Stats per rx_queue_index (per CPU) */ -struct bpf_map_def SEC("maps") rx_queue_index_map = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(u32), - .value_size = sizeof(struct datarec), - .max_entries = MAX_RXQs + 1, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, u32); + __type(value, struct datarec); + __uint(max_entries, MAX_RXQs + 1); +} rx_queue_index_map SEC(".maps"); static __always_inline void swap_src_dst_mac(void *data) diff --git a/samples/bpf/xdp_tx_iptunnel_kern.c b/samples/bpf/xdp_tx_iptunnel_kern.c index 0f4f6e8c8611e..6db450a5c1ca3 100644 --- a/samples/bpf/xdp_tx_iptunnel_kern.c +++ b/samples/bpf/xdp_tx_iptunnel_kern.c @@ -19,19 +19,19 @@ #include "bpf_helpers.h" #include "xdp_tx_iptunnel_common.h" -struct bpf_map_def SEC("maps") rxcnt = { - .type = BPF_MAP_TYPE_PERCPU_ARRAY, - .key_size = sizeof(__u32), - .value_size = sizeof(__u64), - .max_entries = 256, -}; - -struct bpf_map_def SEC("maps") vip2tnl = { - .type = BPF_MAP_TYPE_HASH, - .key_size = sizeof(struct vip), - .value_size = sizeof(struct iptnl_info), - .max_entries = MAX_IPTNL_ENTRIES, -}; +struct { + __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); + __type(key, __u32); + __type(value, __u64); + __uint(max_entries, 256); +} rxcnt SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_HASH); + __type(key, struct vip); + __type(value, struct iptnl_info); + __uint(max_entries, MAX_IPTNL_ENTRIES); +} vip2tnl SEC(".maps"); static __always_inline void count_tx(u32 protocol) { -- 2.30.2