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tcp: tsq: add tsq_flags / tsq_enum

Browse source 
This is a cleanup, to ease code review of following patches.

Old 'enum tsq_flags' is renamed, and a new enumeration is added
with the flags used in cmpxchg() operations as opposed to
single bit operations.

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2016-12-03 11:14:50 -08:00 • committed by David S. Miller
commit 40fc3423b9
2 changed files with 18 additions and 9 deletions
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16
net/ipv4/tcp_output.c
View file

@ -784,10 +784,10 @@ static void tcp_tasklet_func(unsigned long data)
}
}
#define TCP_DEFERRED_ALL ((1UL << TCP_TSQ_DEFERRED) | \
(1UL << TCP_WRITE_TIMER_DEFERRED) | \
(1UL << TCP_DELACK_TIMER_DEFERRED) | \
(1UL << TCP_MTU_REDUCED_DEFERRED))
#define TCP_DEFERRED_ALL (TCPF_TSQ_DEFERRED | \
TCPF_WRITE_TIMER_DEFERRED | \
TCPF_DELACK_TIMER_DEFERRED | \
TCPF_MTU_REDUCED_DEFERRED)
/**
* tcp_release_cb - tcp release_sock() callback
* @sk: socket
@ -808,7 +808,7 @@ void tcp_release_cb(struct sock *sk)
nflags = flags & ~TCP_DEFERRED_ALL;
} while (cmpxchg(&tp->tsq_flags, flags, nflags) != flags);
if (flags & (1UL << TCP_TSQ_DEFERRED))
if (flags & TCPF_TSQ_DEFERRED)
tcp_tsq_handler(sk);
/* Here begins the tricky part :
@ -822,15 +822,15 @@ void tcp_release_cb(struct sock *sk)
*/
sock_release_ownership(sk);
if (flags & (1UL << TCP_WRITE_TIMER_DEFERRED)) {
if (flags & TCPF_WRITE_TIMER_DEFERRED) {
tcp_write_timer_handler(sk);
__sock_put(sk);
}
if (flags & (1UL << TCP_DELACK_TIMER_DEFERRED)) {
if (flags & TCPF_DELACK_TIMER_DEFERRED) {
tcp_delack_timer_handler(sk);
__sock_put(sk);
}
if (flags & (1UL << TCP_MTU_REDUCED_DEFERRED)) {
if (flags & TCPF_MTU_REDUCED_DEFERRED) {
inet_csk(sk)->icsk_af_ops->mtu_reduced(sk);
__sock_put(sk);
}