Insert the full 16 bit VIF ID into ipmr Netlink cache reports.
The VIF_ID attribute has 32 bits of space so can store the full VIF ID
extracted from the high and low byte fields in the igmpmsg.
Signed-off-by: Paul Davey
---
net/ipv4/ipmr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion
Insert the multicast route table ID as a Netlink attribute to Netlink
cache report notifications.
When multiple route tables are in use it is necessary to have a way to
determine which route table a given cache report belongs to when
receiving the cache report.
Signed-off-by: Paul Davey
in the igmpmsg header. Adding the high 8 bits of the 16 bit VIF ID in
the unused byte allows use of more than 255 IPv4 multicast interfaces.
Signed-off-by: Paul Davey
---
include/uapi/linux/mroute.h | 4 ++--
net/ipv4/ipmr.c | 8 ++--
2 files changed, 8 insertions(+), 4 deletions
routing tables. This is easily
resolved by adding the multicast route table ID to the cache reports.
changes in v2:
- Added high byte of VIF ID to igmpmsg struct replacing unused3
member.
- Assemble VIF ID in Netlink notification from both bytes in igmpmsg
header.
Paul Davey (3):
ipmr
. The VIF_ID attribute has 32 bits of
space however so can store the full VIF ID.
Signed-off-by: Paul Davey
---
net/ipv4/ipmr.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 19b2f586319b..26cd4ec450f4 100644
--- a/net/ipv4
Insert the multicast route table ID as a Netlink attribute to Netlink
cache report notifications.
When multiple route tables are in use it is necessary to have a way to
determine which route table a given cache report belongs to when
receiving the cache report.
Signed-off-by: Paul Davey
deficiency in the Netlink cache report
notifications, they lack any means for differentiating cache reports
relating to different multicast routing tables. This is easily
resolved by adding the multicast route table ID to the cache reports.
Paul Davey (2):
ipmr: Add route table ID to netlink cache
