// SPDX-License-Identifier: GPL-2.0 #include "vmlinux.h" #include <bpf/bpf_helpers.h> struct { __uint(type, BPF_MAP_TYPE_SOCKMAP); __uint(max_entries, 1); __type(key, int); __type(value, int); } sock_map SEC(".maps"); #define POP_START 0x48a3 #define POP_LEN 0xfffffffd long pop_data_ret = 1; SEC("sk_msg") int prog_msg_pop_data(struct sk_msg_md *msg) { if (msg->size <= POP_START) return SK_PASS; pop_data_ret = bpf_msg_pop_data(msg, POP_START, POP_LEN, 0); return SK_PASS; } char _license[] SEC("license") = "GPL";