diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 15 | ||||
| -rw-r--r-- | net/wireless/db.txt | 2 |
3 files changed, 11 insertions, 9 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index a299c3956daa..a4c647893e52 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3544,9 +3544,6 @@ static int netif_rx_internal(struct sk_buff *skb) trace_netif_rx(skb); #ifdef CONFIG_RPS - WARN_ONCE(skb_cloned(skb), "Cloned packet from dev %s\n", - skb->dev->name); - if (static_key_false(&rps_needed)) { struct rps_dev_flow voidflow, *rflow = &voidflow; int cpu; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index b8f7e621e16e..32027efa5033 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -89,7 +89,7 @@ int sysctl_tcp_adv_win_scale __read_mostly = 1; EXPORT_SYMBOL(sysctl_tcp_adv_win_scale); /* rfc5961 challenge ack rate limiting */ -int sysctl_tcp_challenge_ack_limit = 100; +int sysctl_tcp_challenge_ack_limit = 1000; int sysctl_tcp_stdurg __read_mostly; int sysctl_tcp_rfc1337 __read_mostly; @@ -3428,7 +3428,7 @@ static void tcp_send_challenge_ack(struct sock *sk, const struct sk_buff *skb) static u32 challenge_timestamp; static unsigned int challenge_count; struct tcp_sock *tp = tcp_sk(sk); - u32 now; + u32 count, now; /* First check our per-socket dupack rate limit. */ if (tcp_oow_rate_limited(sock_net(sk), skb, @@ -3436,13 +3436,18 @@ static void tcp_send_challenge_ack(struct sock *sk, const struct sk_buff *skb) &tp->last_oow_ack_time)) return; - /* Then check the check host-wide RFC 5961 rate limit. */ + /* Then check host-wide RFC 5961 rate limit. */ now = jiffies / HZ; if (now != challenge_timestamp) { + u32 half = (sysctl_tcp_challenge_ack_limit + 1) >> 1; + challenge_timestamp = now; - challenge_count = 0; + WRITE_ONCE(challenge_count, half + + prandom_u32_max(sysctl_tcp_challenge_ack_limit)); } - if (++challenge_count <= sysctl_tcp_challenge_ack_limit) { + count = READ_ONCE(challenge_count); + if (count > 0) { + WRITE_ONCE(challenge_count, count - 1); NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK); tcp_send_ack(sk); } diff --git a/net/wireless/db.txt b/net/wireless/db.txt index 3e47e0641780..23b7c76ff2d8 100644 --- a/net/wireless/db.txt +++ b/net/wireless/db.txt @@ -416,7 +416,7 @@ country EE: DFS-ETSI (57240 - 65880 @ 2160), (40), NO-OUTDOOR country EG: DFS-ETSI - (2402 - 2482 @ 40), (20) + (2402 - 2482 @ 20), (20) (5170 - 5250 @ 20), (23) (5250 - 5330 @ 20), (23), DFS |