diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bpf_dctcp.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_dctcp.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_dctcp.c b/tools/testing/selftests/bpf/progs/bpf_dctcp.c index 127ea762a062..3fb4260570b1 100644 --- a/tools/testing/selftests/bpf/progs/bpf_dctcp.c +++ b/tools/testing/selftests/bpf/progs/bpf_dctcp.c @@ -6,6 +6,7 @@ * the kernel BPF logic. */ +#include <stddef.h> #include <linux/bpf.h> #include <linux/types.h> #include <bpf/bpf_helpers.h> @@ -14,6 +15,15 @@ char _license[] SEC("license") = "GPL"; +int stg_result = 0; + +struct { + __uint(type, BPF_MAP_TYPE_SK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, int); +} sk_stg_map SEC(".maps"); + #define DCTCP_MAX_ALPHA 1024U struct dctcp { @@ -43,12 +53,18 @@ void BPF_PROG(dctcp_init, struct sock *sk) { const struct tcp_sock *tp = tcp_sk(sk); struct dctcp *ca = inet_csk_ca(sk); + int *stg; ca->prior_rcv_nxt = tp->rcv_nxt; ca->dctcp_alpha = min(dctcp_alpha_on_init, DCTCP_MAX_ALPHA); ca->loss_cwnd = 0; ca->ce_state = 0; + stg = bpf_sk_storage_get(&sk_stg_map, (void *)tp, NULL, 0); + if (stg) { + stg_result = *stg; + bpf_sk_storage_delete(&sk_stg_map, (void *)tp); + } dctcp_reset(tp, ca); } |