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Message-Id: <20180830093545.29465-1-pruddy@vyatta.att-mail.com> Date: Thu, 30 Aug 2018 10:35:43 +0100 From: Patrick Ruddy <pruddy@...tta.att-mail.com> To: netdev@...r.kernel.org Cc: roopa@...ulusnetworks.com, jiri@...nulli.us, stephen@...workplumber.org Subject: [PATCH net-next 0/2] netlink: multicast join notifications This patch is an update to https://patchwork.ozlabs.org/patch/571127/. The previous patch was based on sending multicast MAC addresses in the netlink messages to allow the programming of hardware. It was agreed to rework this to use RTM_NEW/DELLINK messages which were more appropriate for layer 2 addresses. In the interim period it has become apparent that the applications actually needs to see the L3 multicast addresses which are joined for FORUS processing so this patch has been reworked to send the L3 multicast addresses using RTM_NEW/DELADDR. These new multicast L3 netlink notifications should use the IFA_MULTICAST address type but this has been dropped in favour of IFA_ADDRESS as during testing it was noticed that some applications - notably getaddrinfo in lib6c assume that there is an IFA_ADDRESS in a RTM_NEW/DELADDR and blindly dereference it. Finally the RTM_GETADDR for both address families has been modified to include the multicast l3 addresses. Patrick Ruddy (2): netlink: ipv4 IGMP join notifications netlink: ipv6 MLD join notifications include/linux/igmp.h | 2 + net/ipv4/devinet.c | 39 +++++++++++++------ net/ipv4/igmp.c | 90 ++++++++++++++++++++++++++++++++++++++++++++ net/ipv6/addrconf.c | 44 ++++++++++++++++------ net/ipv6/mcast.c | 66 ++++++++++++++++++++++++++++++++ 5 files changed, 218 insertions(+), 23 deletions(-) -- 2.17.1
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