d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add versions of tcp_twstart, tcp_close, and tcp_drop that hide the acquisition the tcbinfo lock.

Browse Source 
MFC after:	1 week
This commit is contained in:
Kip Macy 2008-07-21 02:23:02 +00:00
parent 83324f5cb5
commit b1f8bd6464
2 changed files with 65 additions and 1 deletions

60
sys/netinet/tcp_offload.c

@ -50,7 +50,6 @@ __FBSDID("$FreeBSD$");
#include <netinet/tcp_offload.h>
#include <netinet/toedev.h>
int
tcp_offload_connect(struct socket *so, struct sockaddr *nam)
{
@ -92,3 +91,62 @@ fail:
RTFREE(rt);
return (error);
}
/*
* This file contains code as a short-term staging area before it is moved in
* to sys/netinet/tcp_offload.c
*/
void
tcp_offload_twstart(struct tcpcb *tp)
{
INP_INFO_WLOCK(&tcbinfo);
inp_wlock(tp->t_inpcb);
tcp_twstart(tp);
INP_INFO_WUNLOCK(&tcbinfo);
}
void
tcp_offload_twstart_disconnect(struct tcpcb *tp)
{
struct socket *so;
INP_INFO_WLOCK(&tcbinfo);
inp_wlock(tp->t_inpcb);
so = tp->t_inpcb->inp_socket;
tcp_twstart(tp);
if (so)
soisdisconnected(so);
INP_INFO_WUNLOCK(&tcbinfo);
}
struct tcpcb *
tcp_offload_close(struct tcpcb *tp)
{
INP_INFO_WLOCK(&tcbinfo);
INP_WLOCK(tp->t_inpcb);
tp = tcp_close(tp);
INP_INFO_WUNLOCK(&tcbinfo);
if (tp)
INP_WUNLOCK(tp->t_inpcb);
return (tp);
}
struct tcpcb *
tcp_offload_drop(struct tcpcb *tp, int error)
{
INP_INFO_WLOCK(&tcbinfo);
INP_WLOCK(tp->t_inpcb);
tp = tcp_drop(tp, error);
INP_INFO_WUNLOCK(&tcbinfo);
if (tp)
INP_WUNLOCK(tp->t_inpcb);
return (tp);
}

6
sys/netinet/tcp_offload.h

@ -333,4 +333,10 @@ tcp_offload_listen_close(struct tcpcb *tp)
#undef SO_OFFLOADABLE
#endif /* _SYS_SOCKETVAR_H_ */
#undef tp_offload
void tcp_offload_twstart(struct tcpcb *tp);
void tcp_offload_twstart_disconnect(struct tcpcb *tp);
struct tcpcb *tcp_offload_close(struct tcpcb *tp);
struct tcpcb *tcp_offload_drop(struct tcpcb *tp, int error);
#endif /* _NETINET_TCP_OFFLOAD_H_ */