diff options
| author | David Ahern <dsahern@gmail.com> | 2018-10-19 12:45:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-22 19:33:29 -0700 |
| commit | 1c98eca412e1f183070e76d103a296d7afccfd64 (patch) | |
| tree | d313fda376ba97b49984262d65d3cb25faf0edb0 /net/ipv4/devinet.c | |
| parent | 8df591f35e9651b955d21f43828f54c106cf4807 (diff) | |
net/ipv4: Move loop over addresses on a device into in_dev_dump_addr
Similar to IPv6 move the logic that walks over the ipv4 address list
for a device into a helper.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index d122ebbe5980..67f382c560ba 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1713,6 +1713,32 @@ static int inet_valid_dump_ifaddr_req(const struct nlmsghdr *nlh, return 0; } +static int in_dev_dump_addr(struct in_device *in_dev, struct sk_buff *skb, + struct netlink_callback *cb, int s_ip_idx, + struct inet_fill_args *fillargs) +{ + struct in_ifaddr *ifa; + int ip_idx = 0; + int err; + + for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next, ip_idx++) { + if (ip_idx < s_ip_idx) + continue; + + err = inet_fill_ifaddr(skb, ifa, fillargs); + if (err < 0) + goto done; + + nl_dump_check_consistent(cb, nlmsg_hdr(skb)); + } + err = 0; + +done: + cb->args[2] = ip_idx; + + return err; +} + static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { const struct nlmsghdr *nlh = cb->nlh; @@ -1727,19 +1753,17 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) struct net *tgt_net = net; int h, s_h; int idx, s_idx; - int ip_idx, s_ip_idx; + int s_ip_idx; struct net_device *dev; struct in_device *in_dev; - struct in_ifaddr *ifa; struct hlist_head *head; + int err; s_h = cb->args[0]; s_idx = idx = cb->args[1]; - s_ip_idx = ip_idx = cb->args[2]; + s_ip_idx = cb->args[2]; if (cb->strict_check) { - int err; - err = inet_valid_dump_ifaddr_req(nlh, &fillargs, &tgt_net, skb->sk, cb->extack); if (err < 0) @@ -1761,15 +1785,11 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) if (!in_dev) goto cont; - for (ifa = in_dev->ifa_list, ip_idx = 0; ifa; - ifa = ifa->ifa_next, ip_idx++) { - if (ip_idx < s_ip_idx) - continue; - if (inet_fill_ifaddr(skb, ifa, &fillargs) < 0) { - rcu_read_unlock(); - goto done; - } - nl_dump_check_consistent(cb, nlmsg_hdr(skb)); + err = in_dev_dump_addr(in_dev, skb, cb, s_ip_idx, + &fillargs); + if (err < 0) { + rcu_read_unlock(); + goto done; } cont: idx++; @@ -1780,7 +1800,6 @@ cont: done: cb->args[0] = h; cb->args[1] = idx; - cb->args[2] = ip_idx; if (fillargs.netnsid >= 0) put_net(tgt_net); |