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TCY16/xdp_rrl_VIP_list_243-257.c Secret

Created October 5, 2020 13:47
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xdp_rrl_VIP_list_243-257.c
// search for the prefix in the LPM trie
struct {
uint32_t prefixlen;
uint32_t ipv4_addr;
} key4 = {
.prefixlen = 32,
.ipv4_addr = key
};
uint64_t *count = bpf_map_lookup_elem(&exclude_v4_prefixes, &key4);
// if the prefix matches, we exclude it from rate limiting
if (count) {
lock_xadd(count, 1);
return 1; // XDP_PASS
}
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