diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2025-01-15 17:06:04 +0900 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-01-20 12:16:05 -0800 |
| commit | f7fce98a73df01901c8d67f1e7cd66a05fed148f (patch) | |
| tree | a22eb87a406706909a3572f6aa33220ea70491c0 | |
| parent | 832128cc4438ab69c801bc6130756203eae1198e (diff) | |
ipv6: Pass dev to inet6_addr_add().
inet6_addr_add() is called from inet6_rtm_newaddr() and
addrconf_add_ifaddr().
inet6_addr_add() looks up dev by __dev_get_by_index(), but
it's already done in inet6_rtm_newaddr().
Let's move the 2nd lookup to addrconf_add_ifaddr() and pass
dev to inet6_addr_add().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250115080608.28127-8-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/ipv6/addrconf.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9c7257b28a84..0e7ca74012aa 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3007,13 +3007,12 @@ static int ipv6_mc_config(struct sock *sk, bool join, /* * Manual configuration of address on an interface */ -static int inet6_addr_add(struct net *net, int ifindex, +static int inet6_addr_add(struct net *net, struct net_device *dev, struct ifa6_config *cfg, struct netlink_ext_ack *extack) { struct inet6_ifaddr *ifp; struct inet6_dev *idev; - struct net_device *dev; unsigned long timeout; clock_t expires; u32 flags; @@ -3036,10 +3035,6 @@ static int inet6_addr_add(struct net *net, int ifindex, return -EINVAL; } - dev = __dev_get_by_index(net, ifindex); - if (!dev) - return -ENODEV; - idev = addrconf_add_dev(dev); if (IS_ERR(idev)) { NL_SET_ERR_MSG_MOD(extack, "IPv6 is disabled on this device"); @@ -3048,7 +3043,7 @@ static int inet6_addr_add(struct net *net, int ifindex, if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) { int ret = ipv6_mc_config(net->ipv6.mc_autojoin_sk, - true, cfg->pfx, ifindex); + true, cfg->pfx, dev->ifindex); if (ret < 0) { NL_SET_ERR_MSG_MOD(extack, "Multicast auto join failed"); @@ -3103,7 +3098,7 @@ static int inet6_addr_add(struct net *net, int ifindex, return 0; } else if (cfg->ifa_flags & IFA_F_MCAUTOJOIN) { ipv6_mc_config(net->ipv6.mc_autojoin_sk, false, - cfg->pfx, ifindex); + cfg->pfx, dev->ifindex); } return PTR_ERR(ifp); @@ -3169,6 +3164,7 @@ int addrconf_add_ifaddr(struct net *net, void __user *arg) .preferred_lft = INFINITY_LIFE_TIME, .valid_lft = INFINITY_LIFE_TIME, }; + struct net_device *dev; struct in6_ifreq ireq; int err; @@ -3182,7 +3178,11 @@ int addrconf_add_ifaddr(struct net *net, void __user *arg) cfg.plen = ireq.ifr6_prefixlen; rtnl_net_lock(net); - err = inet6_addr_add(net, ireq.ifr6_ifindex, &cfg, NULL); + dev = __dev_get_by_index(net, ireq.ifr6_ifindex); + if (dev) + err = inet6_addr_add(net, dev, &cfg, NULL); + else + err = -ENODEV; rtnl_net_unlock(net); return err; } @@ -5064,7 +5064,7 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, * It would be best to check for !NLM_F_CREATE here but * userspace already relies on not having to provide this. */ - return inet6_addr_add(net, ifm->ifa_index, &cfg, extack); + return inet6_addr_add(net, dev, &cfg, extack); } if (nlh->nlmsg_flags & NLM_F_EXCL || |