Mercurial > hg > nginx
diff src/event/quic/ngx_event_quic_transport.c @ 8676:7df607cb2d11 quic
QUIC: ngx_quic_bpf module.
The quic kernel bpf helper inspects packet payload for DCID, extracts key
and routes the packet into socket matching the key.
Due to reuseport feature, each worker owns a personal socket, which is
identified by the same key, used to create DCID.
BPF objects are locked in RAM and are subject to RLIMIT_MEMLOCK.
The "ulimit -l" command may be used to setup proper limits, if maps
cannot be created with EPERM or updated with ETOOLONG.
| author | Vladimir Homutov <vl@nginx.com> |
|---|---|
| date | Fri, 25 Dec 2020 15:01:15 +0300 |
| parents | 046c951e393a |
| children | 3443ee341cc1 |
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--- a/src/event/quic/ngx_event_quic_transport.c +++ b/src/event/quic/ngx_event_quic_transport.c @@ -43,6 +43,17 @@ #endif +#define ngx_quic_write_uint64(p, s) \ + ((p)[0] = (u_char) ((s) >> 56), \ + (p)[1] = (u_char) ((s) >> 48), \ + (p)[2] = (u_char) ((s) >> 40), \ + (p)[3] = (u_char) ((s) >> 32), \ + (p)[4] = (u_char) ((s) >> 24), \ + (p)[5] = (u_char) ((s) >> 16), \ + (p)[6] = (u_char) ((s) >> 8), \ + (p)[7] = (u_char) (s), \ + (p) + sizeof(uint64_t)) + #define ngx_quic_write_uint24(p, s) \ ((p)[0] = (u_char) ((s) >> 16), \ (p)[1] = (u_char) ((s) >> 8), \ @@ -1981,3 +1992,10 @@ ngx_quic_create_close(u_char *p, ngx_qui return p - start; } + + +void +ngx_quic_dcid_encode_key(u_char *dcid, uint64_t key) +{ + (void) ngx_quic_write_uint64(dcid, key); +}