| // SPDX-License-Identifier: GPL-2.0 |
| // Test that we reject TS val updates on a packet with invalid ACK sequence |
| |
| `./defaults.sh |
| ` |
| |
| // Create a socket. |
| 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 |
| +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 |
| |
| +0 bind(3, ..., ...) = 0 |
| +0 listen(3, 1) = 0 |
| |
| // Establish a connection. |
| +.1 < S 0:0(0) win 20000 <mss 1000,sackOK,TS val 100 ecr 0> |
| +0 > S. 0:0(0) ack 1 <mss 1460,sackOK,TS val 100 ecr 100> |
| +.1 < . 1:1(0) ack 1 win 20000 <nop,nop,TS val 200 ecr 100> |
| +0 accept(3, ..., ...) = 4 |
| |
| // bad packet with high tsval (its ACK sequence is above our sndnxt) |
| +0 < F. 1:1(0) ack 9999 win 20000 <nop,nop,TS val 200000 ecr 100> |
| |
| |
| +0 < . 1:1001(1000) ack 1 win 20000 <nop,nop,TS val 201 ecr 100> |
| +0 > . 1:1(0) ack 1001 <nop,nop,TS val 200 ecr 201> |
