kernel/linux.git/net/ipv6/sit.c, branch v7.0.10

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

ipv4: use dst4_mtu() instead of dst_mtu()

2026-02-03T01:49:29+00:00

When we expect an IPv4 dst, use dst4_mtu() instead of dst_mtu() to save some code space. Signed-off-by: Eric Dumazet Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20260130210303.3888261-8-edumazet@google.com Signed-off-by: Jakub Kicinski

ipv6: sit: Add ipip6_tunnel_dst_find() for cleanup

2025-09-04T08:03:59+00:00

Extract the dst lookup logic from ipip6_tunnel_xmit() into new helper ipip6_tunnel_dst_find() to reduce code duplication and enhance readability. No functional change intended. On a x86_64, with allmodconfig object size is also reduced: ./scripts/bloat-o-meter net/ipv6/sit.o net/ipv6/sit-new.o add/remove: 5/3 grow/shrink: 3/4 up/down: 1841/-2275 (-434) Function old new delta ipip6_tunnel_dst_find - 1697 +1697 __pfx_ipip6_tunnel_dst_find - 64 +64 __UNIQUE_ID_modinfo2094 - 43 +43 ipip6_tunnel_xmit.isra.cold 79 88 +9 __UNIQUE_ID_modinfo2096 12 20 +8 __UNIQUE_ID___addressable_init_module2092 - 8 +8 __UNIQUE_ID___addressable_cleanup_module2093 - 8 +8 __func__ 55 59 +4 __UNIQUE_ID_modinfo2097 20 18 -2 __UNIQUE_ID___addressable_init_module2093 8 - -8 __UNIQUE_ID___addressable_cleanup_module2094 8 - -8 __UNIQUE_ID_modinfo2098 18 - -18 __UNIQUE_ID_modinfo2095 43 12 -31 descriptor 112 56 -56 ipip6_tunnel_xmit.isra 9910 7758 -2152 Total: Before=72537, After=72103, chg -0.60% Signed-off-by: Yue Haibing Reviewed-by: Alexander Lobakin Link: https://patch.msgid.link/20250901114857.1968513-1-yuehaibing@huawei.com Signed-off-by: Paolo Abeni

net: ipv4: Add a flags argument to iptunnel_xmit(), udp_tunnel_xmit_skb()

2025-06-18T01:18:44+00:00

iptunnel_xmit() erases the contents of the SKB control block. In order to be able to set particular IPCB flags on the SKB, add a corresponding parameter, and propagate it to udp_tunnel_xmit_skb() as well. In one of the following patches, VXLAN driver will use this facility to mark packets as subject to IP multicast routing. Signed-off-by: Petr Machata Reviewed-by: Ido Schimmel Reviewed-by: Nikolay Aleksandrov Acked-by: Antonio Quartulli Link: https://patch.msgid.link/89c9daf9f2dc088b6b92ccebcc929f51742de91f.1750113335.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski

ipv6: Convert tunnel devices' ->exit_batch_rtnl() to ->exit_rtnl().

2025-04-15T00:08:42+00:00

The following functions iterates the dying netns list and performs the same operations for each netns. * ip6gre_exit_batch_rtnl() * ip6_tnl_exit_batch_rtnl() * vti6_exit_batch_rtnl() * sit_exit_batch_rtnl() Let's use ->exit_rtnl(). Signed-off-by: Kuniyuki Iwashima Reviewed-by: David Ahern Reviewed-by: Sabrina Dubroca Link: https://patch.msgid.link/20250411205258.63164-8-kuniyu@amazon.com Signed-off-by: Jakub Kicinski

net: move misc netdev_lock flavors to a separate header

2025-03-08T17:06:50+00:00

Move the more esoteric helpers for netdev instance lock to a dedicated header. This avoids growing netdevice.h to infinity and makes rebuilding the kernel much faster (after touching the header with the helpers). The main netdev_lock() / netdev_unlock() functions are used in static inlines in netdevice.h and will probably be used most commonly, so keep them in netdevice.h. Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250307183006.2312761-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

net: rename netns_local to netns_immutable

2025-03-04T11:44:48+00:00

The name 'netns_local' is confusing. A following commit will export it via netlink, so let's use a more explicit name. Reported-by: Eric Dumazet Suggested-by: Kuniyuki Iwashima Signed-off-by: Nicolas Dichtel Reviewed-by: Kuniyuki Iwashima Signed-off-by: Paolo Abeni

net: ipv6: Use link netns in newlink() of rtnl_link_ops

2025-02-21T23:28:02+00:00

When link_net is set, use it as link netns instead of dev_net(). This prepares for rtnetlink core to create device in target netns directly, in which case the two namespaces may be different. Signed-off-by: Xiao Liang Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20250219125039.18024-9-shaw.leon@gmail.com Signed-off-by: Jakub Kicinski

net: ipv6: Init tunnel link-netns before registering dev

2025-02-21T23:28:02+00:00

Currently some IPv6 tunnel drivers set tnl->net to dev_net(dev) in ndo_init(), which is called in register_netdevice(). However, it lacks the context of link-netns when we enable cross-net tunnels at device registration time. Let's move the init of tunnel link-netns before register_netdevice(). ip6_gre has already initialized netns, so just remove the redundant assignment. Signed-off-by: Xiao Liang Reviewed-by: Kuniyuki Iwashima Link: https://patch.msgid.link/20250219125039.18024-8-shaw.leon@gmail.com Signed-off-by: Jakub Kicinski