On 2012-07-14 10:00, Jan Kiszka wrote: > On 2012-07-13 22:54, Anders Waldenborg wrote: >> Changes so translation of remote address to the host's ip address in >> the virtual network happens for all addresses in the 127.0.0.0/8 >> network, not just 127.0.0.1. >> >> This fixes so that hostfwd bound to addresses such as 127.0.0.2 works. >> >> Signed-off-by: Anders Waldenborg <[email protected]> >> --- >> >> On Fri, Jul 13, 2012 at 03:01:14PM +0000, Blue Swirl wrote: >>>> Notice that the surrounding code in tcp_subr.c uses tabs for >>>> indentation. Should I still use space as the coding style mandates >>>> (and which makes checkpatch happy)? >>> >>> Yes, the goal is to get rid of tabs. >> >> OK. Thanks for clarifacion and review! >> >> Patch updated. >> >> slirp/main.h | 1 + >> slirp/slirp.c | 3 +++ >> slirp/tcp_subr.c | 7 +++++-- >> 3 files changed, 9 insertions(+), 2 deletions(-) >> >> diff --git a/slirp/main.h b/slirp/main.h >> index 028df4b..bf601e2 100644 >> --- a/slirp/main.h >> +++ b/slirp/main.h >> @@ -31,6 +31,7 @@ extern char *exec_shell; >> extern u_int curtime; >> extern fd_set *global_readfds, *global_writefds, *global_xfds; >> extern struct in_addr loopback_addr; >> +extern in_addr_t loopback_mask; >> extern char *username; >> extern char *socket_path; >> extern int towrite_max; >> diff --git a/slirp/slirp.c b/slirp/slirp.c >> index 90473eb..9787104 100644 >> --- a/slirp/slirp.c >> +++ b/slirp/slirp.c >> @@ -29,6 +29,8 @@ >> >> /* host loopback address */ >> struct in_addr loopback_addr; >> +/* host loopback network mask */ >> +in_addr_t loopback_mask; >> >> /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ >> static const uint8_t special_ethaddr[ETH_ALEN] = { >> @@ -191,6 +193,7 @@ static void slirp_init_once(void) >> #endif >> >> loopback_addr.s_addr = htonl(INADDR_LOOPBACK); >> + loopback_mask = htonl(IN_CLASSA_NET); >> } >> >> static void slirp_state_save(QEMUFile *f, void *opaque); >> diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c >> index 0a545c4..6b01f74 100644 >> --- a/slirp/tcp_subr.c >> +++ b/slirp/tcp_subr.c >> @@ -435,8 +435,11 @@ tcp_connect(struct socket *inso) >> so->so_fport = addr.sin_port; >> so->so_faddr = addr.sin_addr; >> /* Translate connections from localhost to the real hostname */ >> - if (so->so_faddr.s_addr == 0 || so->so_faddr.s_addr == >> loopback_addr.s_addr) >> - so->so_faddr = slirp->vhost_addr; >> + if (so->so_faddr.s_addr == 0 || >> + (so->so_faddr.s_addr & loopback_mask) == >> + (loopback_addr.s_addr & loopback_mask)) { >> + so->so_faddr = slirp->vhost_addr; >> + } > > Dropping tabs is desired, but as long as slirp is such a mess coding > style wise, I prefer keeping the indention depth consistent. I fixed > this up while merging it. > > Out of curiosity: Which host platform requires this? Linux always > reports 127.0.0.1 as source, even when you bind the hostfwd rule to a > different localhost address.
Ah, found the test case: binding the host-side initiator of the connection to some other localhost address provides a before-after effect. Jan
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