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Revert c6537d6742

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Backout the tipc changes to the flags int he subscription message.  These
changees, while reasonable on the surface, interefere with user space ABI
compatibility which is a no-no.  This was part of the changes to fix the
endianess issues in the TIPC protocol, which would be really nice to do but we
need to do so in a way that is backwards compatible with user space.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neil Horman 2010-10-21 01:06:15 +00:00 committed by David S. Miller
parent d2ed817766
commit 8c97443808
2 changed files with 23 additions and 22 deletions
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30
include/linux/tipc.h
View file

@ -127,17 +127,23 @@ static inline unsigned int tipc_node(__u32 addr)
* TIPC topology subscription service definitions
*/
#define TIPC_SUB_SERVICE 0x00 /* Filter for service availability */
#define TIPC_SUB_PORTS 0x01 /* Filter for port availability */
#define TIPC_SUB_CANCEL 0x04 /* Cancel a subscription */
#define TIPC_SUB_PORTS 0x01 /* filter for port availability */
#define TIPC_SUB_SERVICE 0x02 /* filter for service availability */
#define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */
#if 0
/* The following filter options are not currently implemented */
#define TIPC_SUB_NO_BIND_EVTS 0x04 /* filter out "publish" events */
#define TIPC_SUB_NO_UNBIND_EVTS 0x08 /* filter out "withdraw" events */
#define TIPC_SUB_SINGLE_EVT 0x10 /* expire after first event */
#endif
#define TIPC_WAIT_FOREVER ~0 /* timeout for permanent subscription */
struct tipc_subscr {
struct tipc_name_seq seq; /* NBO. Name sequence of interest */
__u32 timeout; /* NBO. Subscription duration (in ms) */
__u32 filter; /* NBO. Bitmask of filter options */
char usr_handle[8]; /* Opaque. Available for subscriber use */
struct tipc_name_seq seq; /* name sequence of interest */
__u32 timeout; /* subscription duration (in ms) */
__u32 filter; /* bitmask of filter options */
char usr_handle[8]; /* available for subscriber use */
};
#define TIPC_PUBLISHED 1 /* publication event */
@ -145,11 +151,11 @@ struct tipc_subscr {
#define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */
struct tipc_event {
__u32 event; /* NBO. Event type, as defined above */
__u32 found_lower; /* NBO. Matching name seq instances */
__u32 found_upper; /* " " " " " */
struct tipc_portid port; /* NBO. Associated port */
struct tipc_subscr s; /* Original, associated subscription */
__u32 event; /* event type */
__u32 found_lower; /* matching name seq instances */
__u32 found_upper; /* " " " " */
struct tipc_portid port; /* associated port */
struct tipc_subscr s; /* associated subscription */
};
/*

15
net/tipc/subscr.c
View file

@ -274,7 +274,7 @@ static void subscr_cancel(struct tipc_subscr *s,
{
struct subscription *sub;
struct subscription *sub_temp;
__u32 type, lower, upper, timeout, filter;
__u32 type, lower, upper;
int found = 0;
/* Find first matching subscription, exit if not found */
@ -282,18 +282,12 @@ static void subscr_cancel(struct tipc_subscr *s,
type = ntohl(s->seq.type);
lower = ntohl(s->seq.lower);
upper = ntohl(s->seq.upper);
timeout = ntohl(s->timeout);
filter = ntohl(s->filter) & ~TIPC_SUB_CANCEL;
list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list,
subscription_list) {
if ((type == sub->seq.type) &&
(lower == sub->seq.lower) &&
(upper == sub->seq.upper) &&
(timeout == sub->timeout) &&
(filter == sub->filter) &&
!memcmp(s->usr_handle,sub->evt.s.usr_handle,
sizeof(s->usr_handle)) ){
(upper == sub->seq.upper)) {
found = 1;
break;
}
@ -310,7 +304,7 @@ static void subscr_cancel(struct tipc_subscr *s,
k_term_timer(&sub->timer);
spin_lock_bh(subscriber->lock);
}
dbg("Cancel: removing sub %u,%u,%u from subscriber %p list\n",
dbg("Cancel: removing sub %u,%u,%u from subscriber %x list\n",
sub->seq.type, sub->seq.lower, sub->seq.upper, subscriber);
subscr_del(sub);
}
@ -358,7 +352,8 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s,
sub->seq.upper = ntohl(s->seq.upper);
sub->timeout = ntohl(s->timeout);
sub->filter = ntohl(s->filter);
if ((sub->filter && (sub->filter != TIPC_SUB_PORTS)) ||
if ((!(sub->filter & TIPC_SUB_PORTS) ==
!(sub->filter & TIPC_SUB_SERVICE)) ||
(sub->seq.lower > sub->seq.upper)) {
warn("Subscription rejected, illegal request\n");
kfree(sub);