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ipmr: add netlink notifications on igmpmsg cache reports

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Add Netlink notifications on cache reports in ipmr, in addition to the
existing igmpmsg sent to mroute_sk.
Send RTM_NEWCACHEREPORT notifications to RTNLGRP_IPV4_MROUTE_R.

MSGTYPE, VIF_ID, SRC_ADDR and DST_ADDR Netlink attributes contain the
same data as their equivalent fields in the igmpmsg header.
PKT attribute is the packet sent to mroute_sk, without the added igmpmsg
header.

Suggested-by: Ryan Halbrook <halbrook@arista.com>
Signed-off-by: Julien Gomes <julien@arista.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julien Gomes 2017-06-20 13:54:17 -07:00 • committed by David S. Miller
parent 5f729eaabe
commit 5a645dd86c
2 changed files with 79 additions and 2 deletions
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12
include/uapi/linux/mroute.h
View file

@ -152,6 +152,18 @@ enum {
};
#define IPMRA_VIFA_MAX (__IPMRA_VIFA_MAX - 1)
/* ipmr netlink cache report attributes */
enum {
IPMRA_CREPORT_UNSPEC,
IPMRA_CREPORT_MSGTYPE,
IPMRA_CREPORT_VIF_ID,
IPMRA_CREPORT_SRC_ADDR,
IPMRA_CREPORT_DST_ADDR,
IPMRA_CREPORT_PKT,
__IPMRA_CREPORT_MAX
};
#define IPMRA_CREPORT_MAX (__IPMRA_CREPORT_MAX - 1)
/* That's all usermode folks */
#define MFC_ASSERT_THRESH (3*HZ) /* Maximal freq. of asserts */