diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_sock_fields_kern.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_sock_fields_kern.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c b/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c deleted file mode 100644 index 9bcaa37f476a..000000000000 --- a/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c +++ /dev/null @@ -1,255 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (c) 2019 Facebook */ - -#include <linux/bpf.h> -#include <netinet/in.h> -#include <stdbool.h> - -#include <bpf/bpf_helpers.h> -#include <bpf/bpf_endian.h> - -enum bpf_addr_array_idx { - ADDR_SRV_IDX, - ADDR_CLI_IDX, - __NR_BPF_ADDR_ARRAY_IDX, -}; - -enum bpf_result_array_idx { - EGRESS_SRV_IDX, - EGRESS_CLI_IDX, - INGRESS_LISTEN_IDX, - __NR_BPF_RESULT_ARRAY_IDX, -}; - -enum bpf_linum_array_idx { - EGRESS_LINUM_IDX, - INGRESS_LINUM_IDX, - __NR_BPF_LINUM_ARRAY_IDX, -}; - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_ADDR_ARRAY_IDX); - __type(key, __u32); - __type(value, struct sockaddr_in6); -} addr_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); - __type(key, __u32); - __type(value, struct bpf_sock); -} sock_result_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); - __type(key, __u32); - __type(value, struct bpf_tcp_sock); -} tcp_sock_result_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_LINUM_ARRAY_IDX); - __type(key, __u32); - __type(value, __u32); -} linum_map SEC(".maps"); - -struct bpf_spinlock_cnt { - struct bpf_spin_lock lock; - __u32 cnt; -}; - -struct { - __uint(type, BPF_MAP_TYPE_SK_STORAGE); - __uint(map_flags, BPF_F_NO_PREALLOC); - __type(key, int); - __type(value, struct bpf_spinlock_cnt); -} sk_pkt_out_cnt SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_SK_STORAGE); - __uint(map_flags, BPF_F_NO_PREALLOC); - __type(key, int); - __type(value, struct bpf_spinlock_cnt); -} sk_pkt_out_cnt10 SEC(".maps"); - -static bool is_loopback6(__u32 *a6) -{ - return !a6[0] && !a6[1] && !a6[2] && a6[3] == bpf_htonl(1); -} - -static void skcpy(struct bpf_sock *dst, - const struct bpf_sock *src) -{ - dst->bound_dev_if = src->bound_dev_if; - dst->family = src->family; - dst->type = src->type; - dst->protocol = src->protocol; - dst->mark = src->mark; - dst->priority = src->priority; - dst->src_ip4 = src->src_ip4; - dst->src_ip6[0] = src->src_ip6[0]; - dst->src_ip6[1] = src->src_ip6[1]; - dst->src_ip6[2] = src->src_ip6[2]; - dst->src_ip6[3] = src->src_ip6[3]; - dst->src_port = src->src_port; - dst->dst_ip4 = src->dst_ip4; - dst->dst_ip6[0] = src->dst_ip6[0]; - dst->dst_ip6[1] = src->dst_ip6[1]; - dst->dst_ip6[2] = src->dst_ip6[2]; - dst->dst_ip6[3] = src->dst_ip6[3]; - dst->dst_port = src->dst_port; - dst->state = src->state; -} - -static void tpcpy(struct bpf_tcp_sock *dst, - const struct bpf_tcp_sock *src) -{ - dst->snd_cwnd = src->snd_cwnd; - dst->srtt_us = src->srtt_us; - dst->rtt_min = src->rtt_min; - dst->snd_ssthresh = src->snd_ssthresh; - dst->rcv_nxt = src->rcv_nxt; - dst->snd_nxt = src->snd_nxt; - dst->snd_una = src->snd_una; - dst->mss_cache = src->mss_cache; - dst->ecn_flags = src->ecn_flags; - dst->rate_delivered = src->rate_delivered; - dst->rate_interval_us = src->rate_interval_us; - dst->packets_out = src->packets_out; - dst->retrans_out = src->retrans_out; - dst->total_retrans = src->total_retrans; - dst->segs_in = src->segs_in; - dst->data_segs_in = src->data_segs_in; - dst->segs_out = src->segs_out; - dst->data_segs_out = src->data_segs_out; - dst->lost_out = src->lost_out; - dst->sacked_out = src->sacked_out; - dst->bytes_received = src->bytes_received; - dst->bytes_acked = src->bytes_acked; -} - -#define RETURN { \ - linum = __LINE__; \ - bpf_map_update_elem(&linum_map, &linum_idx, &linum, 0); \ - return 1; \ -} - -SEC("cgroup_skb/egress") -int egress_read_sock_fields(struct __sk_buff *skb) -{ - struct bpf_spinlock_cnt cli_cnt_init = { .lock = 0, .cnt = 0xeB9F }; - __u32 srv_idx = ADDR_SRV_IDX, cli_idx = ADDR_CLI_IDX, result_idx; - struct bpf_spinlock_cnt *pkt_out_cnt, *pkt_out_cnt10; - struct sockaddr_in6 *srv_sa6, *cli_sa6; - struct bpf_tcp_sock *tp, *tp_ret; - struct bpf_sock *sk, *sk_ret; - __u32 linum, linum_idx; - - linum_idx = EGRESS_LINUM_IDX; - - sk = skb->sk; - if (!sk || sk->state == 10) - RETURN; - - sk = bpf_sk_fullsock(sk); - if (!sk || sk->family != AF_INET6 || sk->protocol != IPPROTO_TCP || - !is_loopback6(sk->src_ip6)) - RETURN; - - tp = bpf_tcp_sock(sk); - if (!tp) - RETURN; - - srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); - cli_sa6 = bpf_map_lookup_elem(&addr_map, &cli_idx); - if (!srv_sa6 || !cli_sa6) - RETURN; - - if (sk->src_port == bpf_ntohs(srv_sa6->sin6_port)) - result_idx = EGRESS_SRV_IDX; - else if (sk->src_port == bpf_ntohs(cli_sa6->sin6_port)) - result_idx = EGRESS_CLI_IDX; - else - RETURN; - - sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); - tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); - if (!sk_ret || !tp_ret) - RETURN; - - skcpy(sk_ret, sk); - tpcpy(tp_ret, tp); - - if (result_idx == EGRESS_SRV_IDX) { - /* The userspace has created it for srv sk */ - pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, 0, 0); - pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, sk, - 0, 0); - } else { - pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, - &cli_cnt_init, - BPF_SK_STORAGE_GET_F_CREATE); - pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, - sk, &cli_cnt_init, - BPF_SK_STORAGE_GET_F_CREATE); - } - - if (!pkt_out_cnt || !pkt_out_cnt10) - RETURN; - - /* Even both cnt and cnt10 have lock defined in their BTF, - * intentionally one cnt takes lock while one does not - * as a test for the spinlock support in BPF_MAP_TYPE_SK_STORAGE. - */ - pkt_out_cnt->cnt += 1; - bpf_spin_lock(&pkt_out_cnt10->lock); - pkt_out_cnt10->cnt += 10; - bpf_spin_unlock(&pkt_out_cnt10->lock); - - RETURN; -} - -SEC("cgroup_skb/ingress") -int ingress_read_sock_fields(struct __sk_buff *skb) -{ - __u32 srv_idx = ADDR_SRV_IDX, result_idx = INGRESS_LISTEN_IDX; - struct bpf_tcp_sock *tp, *tp_ret; - struct bpf_sock *sk, *sk_ret; - struct sockaddr_in6 *srv_sa6; - __u32 linum, linum_idx; - - linum_idx = INGRESS_LINUM_IDX; - - sk = skb->sk; - if (!sk || sk->family != AF_INET6 || !is_loopback6(sk->src_ip6)) - RETURN; - - srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); - if (!srv_sa6 || sk->src_port != bpf_ntohs(srv_sa6->sin6_port)) - RETURN; - - if (sk->state != 10 && sk->state != 12) - RETURN; - - sk = bpf_get_listener_sock(sk); - if (!sk) - RETURN; - - tp = bpf_tcp_sock(sk); - if (!tp) - RETURN; - - sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); - tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); - if (!sk_ret || !tp_ret) - RETURN; - - skcpy(sk_ret, sk); - tpcpy(tp_ret, tp); - - RETURN; -} - -char _license[] SEC("license") = "GPL"; |