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authorVijay Khemka <vijaykhemka@fb.com>2019-09-12 22:04:50 +0300
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-09-20 04:04:40 +0300
commitcf0eba334268563152e4a8bc9ab865d0037a7948 (patch)
tree9c683b745783ba0fdc438ef2c17eeb3e6ea5b8e8 /net/ncsi/ncsi-manage.c
parentdd0f9d896d167ab37732dd83986adc3a017a13b4 (diff)
downloadlinux-cf0eba334268563152e4a8bc9ab865d0037a7948.tar.xz
net/ncsi: Disable global multicast filter
Disabling multicast filtering from NCSI if it is supported. As it should not filter any multicast packets. In current code, multicast filter is enabled and with an exception of optional field supported by device are disabled filtering. Mainly I see if goal is to disable filtering for IPV6 packets then let it disabled for every other types as well. As we are seeing issues with LLDP not working with this enabled filtering. And there are other issues with IPV6. By Disabling this multicast completely, it is working for both IPV6 as well as LLDP. Signed-off-by: Vijay Khemka <vijaykhemka@fb.com> Acked-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net/ncsi/ncsi-manage.c')
-rw-r--r--net/ncsi/ncsi-manage.c98
1 files changed, 11 insertions, 87 deletions
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 755aab66dcab..70fe02697544 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -14,7 +14,6 @@
#include <net/sock.h>
#include <net/addrconf.h>
#include <net/ipv6.h>
-#include <net/if_inet6.h>
#include <net/genetlink.h>
#include "internal.h"
@@ -978,9 +977,7 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
case ncsi_dev_state_config_ev:
case ncsi_dev_state_config_sma:
case ncsi_dev_state_config_ebf:
-#if IS_ENABLED(CONFIG_IPV6)
- case ncsi_dev_state_config_egmf:
-#endif
+ case ncsi_dev_state_config_dgmf:
case ncsi_dev_state_config_ecnt:
case ncsi_dev_state_config_ec:
case ncsi_dev_state_config_ae:
@@ -1033,23 +1030,23 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
} else if (nd->state == ncsi_dev_state_config_ebf) {
nca.type = NCSI_PKT_CMD_EBF;
nca.dwords[0] = nc->caps[NCSI_CAP_BC].cap;
- if (ncsi_channel_is_tx(ndp, nc))
+ /* if multicast global filtering is supported then
+ * disable it so that all multicast packet will be
+ * forwarded to management controller
+ */
+ if (nc->caps[NCSI_CAP_GENERIC].cap &
+ NCSI_CAP_GENERIC_MC)
+ nd->state = ncsi_dev_state_config_dgmf;
+ else if (ncsi_channel_is_tx(ndp, nc))
nd->state = ncsi_dev_state_config_ecnt;
else
nd->state = ncsi_dev_state_config_ec;
-#if IS_ENABLED(CONFIG_IPV6)
- if (ndp->inet6_addr_num > 0 &&
- (nc->caps[NCSI_CAP_GENERIC].cap &
- NCSI_CAP_GENERIC_MC))
- nd->state = ncsi_dev_state_config_egmf;
- } else if (nd->state == ncsi_dev_state_config_egmf) {
- nca.type = NCSI_PKT_CMD_EGMF;
- nca.dwords[0] = nc->caps[NCSI_CAP_MC].cap;
+ } else if (nd->state == ncsi_dev_state_config_dgmf) {
+ nca.type = NCSI_PKT_CMD_DGMF;
if (ncsi_channel_is_tx(ndp, nc))
nd->state = ncsi_dev_state_config_ecnt;
else
nd->state = ncsi_dev_state_config_ec;
-#endif /* CONFIG_IPV6 */
} else if (nd->state == ncsi_dev_state_config_ecnt) {
if (np->preferred_channel &&
nc != np->preferred_channel)
@@ -1483,70 +1480,6 @@ out:
return -ENODEV;
}
-#if IS_ENABLED(CONFIG_IPV6)
-static int ncsi_inet6addr_event(struct notifier_block *this,
- unsigned long event, void *data)
-{
- struct inet6_ifaddr *ifa = data;
- struct net_device *dev = ifa->idev->dev;
- struct ncsi_dev *nd = ncsi_find_dev(dev);
- struct ncsi_dev_priv *ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
- struct ncsi_package *np;
- struct ncsi_channel *nc;
- struct ncsi_cmd_arg nca;
- bool action;
- int ret;
-
- if (!ndp || (ipv6_addr_type(&ifa->addr) &
- (IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK)))
- return NOTIFY_OK;
-
- switch (event) {
- case NETDEV_UP:
- action = (++ndp->inet6_addr_num) == 1;
- nca.type = NCSI_PKT_CMD_EGMF;
- break;
- case NETDEV_DOWN:
- action = (--ndp->inet6_addr_num == 0);
- nca.type = NCSI_PKT_CMD_DGMF;
- break;
- default:
- return NOTIFY_OK;
- }
-
- /* We might not have active channel or packages. The IPv6
- * required multicast will be enabled when active channel
- * or packages are chosen.
- */
- np = ndp->active_package;
- nc = ndp->active_channel;
- if (!action || !np || !nc)
- return NOTIFY_OK;
-
- /* We needn't enable or disable it if the function isn't supported */
- if (!(nc->caps[NCSI_CAP_GENERIC].cap & NCSI_CAP_GENERIC_MC))
- return NOTIFY_OK;
-
- nca.ndp = ndp;
- nca.req_flags = 0;
- nca.package = np->id;
- nca.channel = nc->id;
- nca.dwords[0] = nc->caps[NCSI_CAP_MC].cap;
- ret = ncsi_xmit_cmd(&nca);
- if (ret) {
- netdev_warn(dev, "Fail to %s global multicast filter (%d)\n",
- (event == NETDEV_UP) ? "enable" : "disable", ret);
- return NOTIFY_DONE;
- }
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block ncsi_inet6addr_notifier = {
- .notifier_call = ncsi_inet6addr_event,
-};
-#endif /* CONFIG_IPV6 */
-
static int ncsi_kick_channels(struct ncsi_dev_priv *ndp)
{
struct ncsi_dev *nd = &ndp->ndev;
@@ -1725,11 +1658,6 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
}
spin_lock_irqsave(&ncsi_dev_lock, flags);
-#if IS_ENABLED(CONFIG_IPV6)
- ndp->inet6_addr_num = 0;
- if (list_empty(&ncsi_dev_list))
- register_inet6addr_notifier(&ncsi_inet6addr_notifier);
-#endif
list_add_tail_rcu(&ndp->node, &ncsi_dev_list);
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
@@ -1896,10 +1824,6 @@ void ncsi_unregister_dev(struct ncsi_dev *nd)
spin_lock_irqsave(&ncsi_dev_lock, flags);
list_del_rcu(&ndp->node);
-#if IS_ENABLED(CONFIG_IPV6)
- if (list_empty(&ncsi_dev_list))
- unregister_inet6addr_notifier(&ncsi_inet6addr_notifier);
-#endif
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
ncsi_unregister_netlink(nd->dev);