diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2025-05-08 08:56:12 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-05-08 08:59:02 -0700 |
| commit | 6b02fd7799fc8e1160c5783459d065ceeb4b7365 (patch) | |
| tree | 5a4190dbd2cc0bf6150c2da94824e2e04047a058 /net/ipv6 | |
| parent | 46431fd5224f7f3bab2823992ae1cf6f2700f1ce (diff) | |
| parent | 2c89c1b655c0b06823f4ee8b055140d8628fc4da (diff) | |
| download | tip-6b02fd7799fc8e1160c5783459d065ceeb4b7365.tar.gz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.15-rc6).
No conflicts.
Adjacent changes:
net/core/dev.c:
08e9f2d584c4 ("net: Lock netdevices during dev_shutdown")
a82dc19db136 ("net: avoid potential race between netdev_get_by_index_lock() and netns switch")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ec6c4ca6d6d990..43b19adfbf88e2 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3214,16 +3214,13 @@ static void add_v4_addrs(struct inet6_dev *idev) struct in6_addr addr; struct net_device *dev; struct net *net = dev_net(idev->dev); - int scope, plen, offset = 0; + int scope, plen; u32 pflags = 0; ASSERT_RTNL(); memset(&addr, 0, sizeof(struct in6_addr)); - /* in case of IP6GRE the dev_addr is an IPv6 and therefore we use only the last 4 bytes */ - if (idev->dev->addr_len == sizeof(struct in6_addr)) - offset = sizeof(struct in6_addr) - 4; - memcpy(&addr.s6_addr32[3], idev->dev->dev_addr + offset, 4); + memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4); if (!(idev->dev->flags & IFF_POINTOPOINT) && idev->dev->type == ARPHRD_SIT) { scope = IPV6_ADDR_COMPATv4; @@ -3534,7 +3531,13 @@ static void addrconf_gre_config(struct net_device *dev) return; } - if (dev->type == ARPHRD_ETHER) { + /* Generate the IPv6 link-local address using addrconf_addr_gen(), + * unless we have an IPv4 GRE device not bound to an IP address and + * which is in EUI64 mode (as __ipv6_isatap_ifid() would fail in this + * case). Such devices fall back to add_v4_addrs() instead. + */ + if (!(dev->type == ARPHRD_IPGRE && *(__be32 *)dev->dev_addr == 0 && + idev->cnf.addr_gen_mode == IN6_ADDR_GEN_MODE_EUI64)) { addrconf_addr_gen(idev, true); return; } |