Using IPv6 flow-label to swiftly route around avoid congested or disconnected network path can greatly improve TCP reliability. This patch adds SNMP counters and a OPT_STATS counter to track both host-level and connection-level statistics. Network administrators can use these counters to evaluate the impact of this new ability better. Export count for rehash attempts to 1) two SNMP counters: TcpTimeoutRehash (rehash due to timeouts), and TcpDuplicateDataRehash (rehash due to receiving duplicate packets) 2) Timestamping API SOF_TIMESTAMPING_OPT_STATS.
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| @@ -386,6 +386,8 @@ struct tcp_sock { · 385 unmodified lines | ||
| 386 | 386 | #define BPF_SOCK_OPS_TEST_FLAG(TP, ARG) 0 |
| 387 | 387 | #endif |
| 388 | 388 | |
| 389 | + u16 timeout_rehash; /* Timeout-triggered rehash attempts */ | |
| 390 | + | |
| 389 | 391 | u32 rcv_ooopack; /* Received out-of-order packets, for tcpinfo */ |
| 390 | 392 | |
| 391 | 393 | /* Receiver side RTT estimation */ |