Author: glebius
Date: Thu Nov 7 00:10:14 2019
New Revision: 354422
URL: https://svnweb.freebsd.org/changeset/base/354422
Log:
Mechanically convert INP_INFO_RLOCK() to NET_EPOCH_ENTER() in
TCP functions that are executed in syscall context. No
functional change here.
Modified:
head/sys/netinet/tcp_usrreq.c
Modified: head/sys/netinet/tcp_usrreq.c
==============================================================================
--- head/sys/netinet/tcp_usrreq.c Thu Nov 7 00:08:34 2019
(r354421)
+++ head/sys/netinet/tcp_usrreq.c Thu Nov 7 00:10:14 2019
(r354422)
@@ -283,7 +283,7 @@ tcp_usr_detach(struct socket *so)
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp_usr_detach: inp == NULL"));
if (!INP_INFO_WLOCKED(&V_tcbinfo)) {
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
rlock = 1;
}
INP_WLOCK(inp);
@@ -291,7 +291,7 @@ tcp_usr_detach(struct socket *so)
("tcp_usr_detach: inp_socket == NULL"));
tcp_detach(so, inp);
if (rlock)
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
}
#ifdef INET
@@ -706,7 +706,7 @@ tcp_usr_disconnect(struct socket *so)
int error = 0;
TCPDEBUG0;
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp_usr_disconnect: inp == NULL"));
INP_WLOCK(inp);
@@ -723,7 +723,7 @@ out:
TCPDEBUG2(PRU_DISCONNECT);
TCP_PROBE2(debug__user, tp, PRU_DISCONNECT);
INP_WUNLOCK(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
return (error);
}
@@ -792,7 +792,7 @@ tcp6_usr_accept(struct socket *so, struct sockaddr **n
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp6_usr_accept: inp == NULL"));
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
INP_WLOCK(inp);
if (inp->inp_flags & (INP_TIMEWAIT | INP_DROPPED)) {
error = ECONNABORTED;
@@ -819,7 +819,7 @@ out:
TCPDEBUG2(PRU_ACCEPT);
TCP_PROBE2(debug__user, tp, PRU_ACCEPT);
INP_WUNLOCK(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
if (error == 0) {
if (v4)
*nam = in6_v4mapsin6_sockaddr(port, &addr);
@@ -842,7 +842,7 @@ tcp_usr_shutdown(struct socket *so)
struct epoch_tracker et;
TCPDEBUG0;
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("inp == NULL"));
INP_WLOCK(inp);
@@ -861,7 +861,7 @@ out:
TCPDEBUG2(PRU_SHUTDOWN);
TCP_PROBE2(debug__user, tp, PRU_SHUTDOWN);
INP_WUNLOCK(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
return (error);
}
@@ -921,10 +921,10 @@ static int
tcp_usr_send(struct socket *so, int flags, struct mbuf *m,
struct sockaddr *nam, struct mbuf *control, struct thread *td)
{
+ struct epoch_tracker et;
int error = 0;
struct inpcb *inp;
struct tcpcb *tp = NULL;
- struct epoch_tracker net_et;
#ifdef INET
#ifdef INET6
struct sockaddr_in sin;
@@ -940,11 +940,11 @@ tcp_usr_send(struct socket *so, int flags, struct mbuf
TCPDEBUG0;
/*
- * We require the pcbinfo lock if we will close the socket as part of
- * this call.
+ * We require the pcbinfo "read lock" if we will close the socket
+ * as part of this call.
*/
if (flags & PRUS_EOF)
- INP_INFO_RLOCK_ET(&V_tcbinfo, net_et);
+ NET_EPOCH_ENTER(et);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp_usr_send: inp == NULL"));
INP_WLOCK(inp);
@@ -1135,7 +1135,7 @@ tcp_usr_send(struct socket *so, int flags, struct mbuf
* Close the send side of the connection after
* the data is sent.
*/
- INP_INFO_RLOCK_ASSERT(&V_tcbinfo);
+ NET_EPOCH_ASSERT();
socantsendmore(so);
tcp_usrclosed(tp);
}
@@ -1231,7 +1231,7 @@ out:
((flags & PRUS_EOF) ? PRU_SEND_EOF : PRU_SEND));
INP_WUNLOCK(inp);
if (flags & PRUS_EOF)
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, net_et);
+ NET_EPOCH_EXIT(et);
return (error);
}
@@ -1275,7 +1275,7 @@ tcp_usr_abort(struct socket *so)
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp_usr_abort: inp == NULL"));
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
INP_WLOCK(inp);
KASSERT(inp->inp_socket != NULL,
("tcp_usr_abort: inp_socket == NULL"));
@@ -1301,7 +1301,7 @@ tcp_usr_abort(struct socket *so)
}
INP_WUNLOCK(inp);
dropped:
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
}
/*
@@ -1318,7 +1318,7 @@ tcp_usr_close(struct socket *so)
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("tcp_usr_close: inp == NULL"));
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
INP_WLOCK(inp);
KASSERT(inp->inp_socket != NULL,
("tcp_usr_close: inp_socket == NULL"));
@@ -1342,7 +1342,7 @@ tcp_usr_close(struct socket *so)
inp->inp_flags |= INP_SOCKREF;
}
INP_WUNLOCK(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
}
/*
@@ -2317,10 +2317,10 @@ tcp_attach(struct socket *so)
}
so->so_rcv.sb_flags |= SB_AUTOSIZE;
so->so_snd.sb_flags |= SB_AUTOSIZE;
- INP_INFO_RLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_ENTER(et);
error = in_pcballoc(so, &V_tcbinfo);
if (error) {
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
return (error);
}
inp = sotoinpcb(so);
@@ -2338,12 +2338,12 @@ tcp_attach(struct socket *so)
if (tp == NULL) {
in_pcbdetach(inp);
in_pcbfree(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
return (ENOBUFS);
}
tp->t_state = TCPS_CLOSED;
INP_WUNLOCK(inp);
- INP_INFO_RUNLOCK_ET(&V_tcbinfo, et);
+ NET_EPOCH_EXIT(et);
TCPSTATES_INC(TCPS_CLOSED);
return (0);
}
@@ -2362,7 +2362,7 @@ tcp_disconnect(struct tcpcb *tp)
struct inpcb *inp = tp->t_inpcb;
struct socket *so = inp->inp_socket;
- INP_INFO_RLOCK_ASSERT(&V_tcbinfo);
+ NET_EPOCH_ASSERT();
INP_WLOCK_ASSERT(inp);
/*
@@ -2401,7 +2401,7 @@ static void
tcp_usrclosed(struct tcpcb *tp)
{
- INP_INFO_RLOCK_ASSERT(&V_tcbinfo);
+ NET_EPOCH_ASSERT();
INP_WLOCK_ASSERT(tp->t_inpcb);
switch (tp->t_state) {
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