From 6863255bd0e48bc41ae5a066d5c771801e92735a Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Mon, 15 Oct 2012 14:52:41 +0200 Subject: cfg80211/mac80211: avoid state mishmash on deauth Avoid situation when we are on associate state in mac80211 and on disassociate state in cfg80211. This can results on crash during modules unload (like showed on this thread: http://marc.info/?t=134373976300001&r=1&w=2) and possibly other problems. Reported-by: Pedro Francisco Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 1b4989082244..f8cd4cf3fad8 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1218,6 +1218,7 @@ struct cfg80211_deauth_request { const u8 *ie; size_t ie_len; u16 reason_code; + bool local_state_change; }; /** -- cgit v1.2.3-59-g8ed1b From 6f73601efb35c7003f5c58c2bc6fd08f3652169c Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Fri, 19 Oct 2012 15:14:44 +0000 Subject: tcp: add SYN/data info to TCP_INFO Add a bit TCPI_OPT_SYN_DATA (32) to the socket option TCP_INFO:tcpi_options. It's set if the data in SYN (sent or received) is acked by SYN-ACK. Server or client application can use this information to check Fast Open success rate. Signed-off-by: Yuchung Cheng Acked-by: Neal Cardwell Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/tcp.h | 3 ++- include/uapi/linux/tcp.h | 1 + net/ipv4/tcp.c | 2 ++ net/ipv4/tcp_input.c | 1 + net/ipv4/tcp_ipv4.c | 1 + net/ipv4/tcp_minisocks.c | 1 + 6 files changed, 8 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 8a7fc4be2d75..60b7aac15e0e 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -191,7 +191,8 @@ struct tcp_sock { u8 do_early_retrans:1,/* Enable RFC5827 early-retransmit */ early_retrans_delayed:1, /* Delayed ER timer installed */ syn_data:1, /* SYN includes data */ - syn_fastopen:1; /* SYN includes Fast Open option */ + syn_fastopen:1, /* SYN includes Fast Open option */ + syn_data_acked:1;/* data in SYN is acked by SYN-ACK */ /* RTT measurement */ u32 srtt; /* smoothed round trip time << 3 */ diff --git a/include/uapi/linux/tcp.h b/include/uapi/linux/tcp.h index c4b89a5cb7df..e962faa5ab0d 100644 --- a/include/uapi/linux/tcp.h +++ b/include/uapi/linux/tcp.h @@ -130,6 +130,7 @@ enum { #define TCPI_OPT_WSCALE 4 #define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */ #define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */ +#define TCPI_OPT_SYN_DATA 32 /* SYN-ACK acked data in SYN sent or rcvd */ enum tcp_ca_state { TCP_CA_Open = 0, diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b7c2f439b54f..197c0008503c 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2764,6 +2764,8 @@ void tcp_get_info(const struct sock *sk, struct tcp_info *info) info->tcpi_options |= TCPI_OPT_ECN; if (tp->ecn_flags & TCP_ECN_SEEN) info->tcpi_options |= TCPI_OPT_ECN_SEEN; + if (tp->syn_data_acked) + info->tcpi_options |= TCPI_OPT_SYN_DATA; info->tcpi_rto = jiffies_to_usecs(icsk->icsk_rto); info->tcpi_ato = jiffies_to_usecs(icsk->icsk_ack.ato); diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 432c36649db3..036f85738141 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5646,6 +5646,7 @@ static bool tcp_rcv_fastopen_synack(struct sock *sk, struct sk_buff *synack, tcp_rearm_rto(sk); return true; } + tp->syn_data_acked = tp->syn_data; return false; } diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index ef998b008a57..0c4a64355603 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1461,6 +1461,7 @@ static int tcp_v4_conn_req_fastopen(struct sock *sk, skb_set_owner_r(skb, child); __skb_queue_tail(&child->sk_receive_queue, skb); tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq; + tp->syn_data_acked = 1; } sk->sk_data_ready(sk, 0); bh_unlock_sock(child); diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 27536ba16c9d..a7302d974f32 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -510,6 +510,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req, newtp->rx_opt.mss_clamp = req->mss; TCP_ECN_openreq_child(newtp, req); newtp->fastopen_rsk = NULL; + newtp->syn_data_acked = 0; TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_PASSIVEOPENS); } -- cgit v1.2.3-59-g8ed1b