diff options
| author | Akhmat Karakotov <hmukos@yandex-team.ru> | 2022-01-28 22:26:21 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-02 17:45:18 +0300 |
| commit | 5903123f662ed18483f05cac3f9e800a074c29ff (patch) | |
| tree | 33c2c972f30b2175af4a445c1c8462a9c78bd99e /net/ipv4/tcp_minisocks.c | |
| parent | 0b6b0d3113eba39d679cd799dafacf3af5500544 (diff) | |
| download | linux-5903123f662ed18483f05cac3f9e800a074c29ff.tar.xz | |
tcp: Use BPF timeout setting for SYN ACK RTO
When setting RTO through BPF program, some SYN ACK packets were unaffected
and continued to use TCP_TIMEOUT_INIT constant. This patch adds timeout
option to struct request_sock. Option is initialized with TCP_TIMEOUT_INIT
and is reassigned through BPF using tcp_timeout_init call. SYN ACK
retransmits now use newly added timeout option.
Signed-off-by: Akhmat Karakotov <hmukos@yandex-team.ru>
Acked-by: Martin KaFai Lau <kafai@fb.com>
v2:
- Add timeout option to struct request_sock. Do not call
tcp_timeout_init on every syn ack retransmit.
v3:
- Use unsigned long for min. Bound tcp_timeout_init to TCP_RTO_MAX.
v4:
- Refactor duplicate code by adding reqsk_timeout function.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 3977257f80d9..6366df7aaf2a 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -583,7 +583,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb, * it can be estimated (approximately) * from another data. */ - tmp_opt.ts_recent_stamp = ktime_get_seconds() - ((TCP_TIMEOUT_INIT/HZ)<<req->num_timeout); + tmp_opt.ts_recent_stamp = ktime_get_seconds() - reqsk_timeout(req, TCP_RTO_MAX) / HZ; paws_reject = tcp_paws_reject(&tmp_opt, th->rst); } } @@ -622,8 +622,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb, !inet_rtx_syn_ack(sk, req)) { unsigned long expires = jiffies; - expires += min(TCP_TIMEOUT_INIT << req->num_timeout, - TCP_RTO_MAX); + expires += reqsk_timeout(req, TCP_RTO_MAX); if (!fastopen) mod_timer_pending(&req->rsk_timer, expires); else |