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ipv6: tcp: provide sk->sk_priority to ctl packets 

We can populate skb->priority for some ctl packets
instead of always using zero.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-09-24 08:01:15 -07:00 committed by David S. Miller
parent 4f6570d720
commit e9a5dceee5
1 changed files with 9 additions and 7 deletions
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16
net/ipv6/tcp_ipv6.c
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@ -804,7 +804,7 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32 seq,
u32 ack, u32 win, u32 tsval, u32 tsecr,
int oif, struct tcp_md5sig_key *key, int rst,
u8 tclass, __be32 label)
u8 tclass, __be32 label, u32 priority)
{
const struct tcphdr *th = tcp_hdr(skb);
struct tcphdr *t1;
@ -909,7 +909,7 @@ static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32
if (!IS_ERR(dst)) {
skb_dst_set(buff, dst);
ip6_xmit(ctl_sk, buff, &fl6, fl6.flowi6_mark, NULL, tclass,
0);
priority);
TCP_INC_STATS(net, TCP_MIB_OUTSEGS);
if (rst)
TCP_INC_STATS(net, TCP_MIB_OUTRSTS);
@ -932,6 +932,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
struct sock *sk1 = NULL;
#endif
__be32 label = 0;
u32 priority = 0;
struct net *net;
int oif = 0;
@ -992,6 +993,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
trace_tcp_send_reset(sk, skb);
if (np->repflow)
label = ip6_flowlabel(ipv6h);
priority = sk->sk_priority;
}
if (sk->sk_state == TCP_TIME_WAIT)
label = cpu_to_be32(inet_twsk(sk)->tw_flowlabel);
@ -1001,7 +1003,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
}
tcp_v6_send_response(sk, skb, seq, ack_seq, 0, 0, 0, oif, key, 1, 0,
label);
label, priority);
#ifdef CONFIG_TCP_MD5SIG
out:
@ -1012,10 +1014,10 @@ out:
static void tcp_v6_send_ack(const struct sock *sk, struct sk_buff *skb, u32 seq,
u32 ack, u32 win, u32 tsval, u32 tsecr, int oif,
struct tcp_md5sig_key *key, u8 tclass,
__be32 label)
__be32 label, u32 priority)
{
tcp_v6_send_response(sk, skb, seq, ack, win, tsval, tsecr, oif, key, 0,
tclass, label);
tclass, label, priority);
}
static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)
@ -1027,7 +1029,7 @@ static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)
tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
tcp_time_stamp_raw() + tcptw->tw_ts_offset,
tcptw->tw_ts_recent, tw->tw_bound_dev_if, tcp_twsk_md5_key(tcptw),
tw->tw_tclass, cpu_to_be32(tw->tw_flowlabel));
tw->tw_tclass, cpu_to_be32(tw->tw_flowlabel), 0);
inet_twsk_put(tw);
}
@ -1050,7 +1052,7 @@ static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
tcp_time_stamp_raw() + tcp_rsk(req)->ts_off,
req->ts_recent, sk->sk_bound_dev_if,
tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->saddr),
0, 0);
0, 0, sk->sk_priority);
}