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dpif-netlink: Implement ct_dump_{start,next,done}.

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These member functions are used by the ct-dpif module to provide its
services.  They're implemented using the netlink-conntrack module.

N.B. The Linux kernel datapaths share the connection tracker among them
and with the rest of the system.  Therefore the operations are not
really dpif specific.

Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com>
Acked-by: Joe Stringer <joe@ovn.org>
This commit is contained in:
Daniele Di Proietto 2015-10-28 11:26:18 -07:00
parent a0f7b6d525
commit c11c9f4a1a
1 changed files with 60 additions and 0 deletions
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60
lib/dpif-netlink.c
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@ -40,6 +40,7 @@
#include "netdev.h"
#include "netdev-linux.h"
#include "netdev-vport.h"
#include "netlink-conntrack.h"
#include "netlink-notifier.h"
#include "netlink-socket.h"
#include "netlink.h"
@ -2279,6 +2280,59 @@ dpif_netlink_get_datapath_version(void)
return version_str;
}
#ifdef __linux__
struct dpif_netlink_ct_dump_state {
struct ct_dpif_dump_state up;
struct nl_ct_dump_state *nl_ct_dump;
};
static int
dpif_netlink_ct_dump_start(struct dpif *dpif OVS_UNUSED,
struct ct_dpif_dump_state **dump_,
const uint16_t *zone)
{
struct dpif_netlink_ct_dump_state *dump;
int err;
dump = xzalloc(sizeof *dump);
err = nl_ct_dump_start(&dump->nl_ct_dump, zone);
if (err) {
free(dump);
return err;
}
*dump_ = &dump->up;
return 0;
}
static int
dpif_netlink_ct_dump_next(struct dpif *dpif OVS_UNUSED,
struct ct_dpif_dump_state *dump_,
struct ct_dpif_entry *entry)
{
struct dpif_netlink_ct_dump_state *dump;
INIT_CONTAINER(dump, dump_, up);
return nl_ct_dump_next(dump->nl_ct_dump, entry);
}
static int
dpif_netlink_ct_dump_done(struct dpif *dpif OVS_UNUSED,
struct ct_dpif_dump_state *dump_)
{
struct dpif_netlink_ct_dump_state *dump;
int err;
INIT_CONTAINER(dump, dump_, up);
err = nl_ct_dump_done(dump->nl_ct_dump);
free(dump);
return err;
}
#endif
const struct dpif_class dpif_netlink_class = {
"system",
NULL, /* init */
@ -2319,9 +2373,15 @@ const struct dpif_class dpif_netlink_class = {
NULL, /* enable_upcall */
NULL, /* disable_upcall */
dpif_netlink_get_datapath_version, /* get_datapath_version */
#ifdef __linux__
dpif_netlink_ct_dump_start,
dpif_netlink_ct_dump_next,
dpif_netlink_ct_dump_done,
#else
NULL, /* ct_dump_start */
NULL, /* ct_dump_next */
NULL, /* ct_dump_done */
#endif
NULL, /* ct_flush */
};