mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git
synced 2026-04-03 23:38:12 -04:00
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/netlink.h>
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#include <linux/nospec.h>
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#include <linux/rtnetlink.h>
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#include <linux/types.h>
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#include <net/ip.h>
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#include <net/net_namespace.h>
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#include <net/tcp.h>
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static int ip_metrics_convert(struct nlattr *fc_mx,
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int fc_mx_len, u32 *metrics,
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struct netlink_ext_ack *extack)
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{
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bool ecn_ca = false;
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struct nlattr *nla;
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int remaining;
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nla_for_each_attr(nla, fc_mx, fc_mx_len, remaining) {
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int type = nla_type(nla);
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u32 val;
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if (!type)
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continue;
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if (type > RTAX_MAX) {
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NL_SET_ERR_MSG(extack, "Invalid metric type");
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return -EINVAL;
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}
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type = array_index_nospec(type, RTAX_MAX + 1);
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if (type == RTAX_CC_ALGO) {
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char tmp[TCP_CA_NAME_MAX];
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nla_strscpy(tmp, nla, sizeof(tmp));
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val = tcp_ca_get_key_by_name(tmp, &ecn_ca);
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if (val == TCP_CA_UNSPEC) {
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NL_SET_ERR_MSG(extack, "Unknown tcp congestion algorithm");
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return -EINVAL;
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}
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} else {
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if (nla_len(nla) != sizeof(u32)) {
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NL_SET_ERR_MSG_ATTR(extack, nla,
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"Invalid attribute in metrics");
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return -EINVAL;
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}
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val = nla_get_u32(nla);
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}
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if (type == RTAX_ADVMSS && val > 65535 - 40)
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val = 65535 - 40;
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if (type == RTAX_MTU && val > 65535 - 15)
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val = 65535 - 15;
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if (type == RTAX_HOPLIMIT && val > 255)
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val = 255;
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if (type == RTAX_FEATURES && (val & ~RTAX_FEATURE_MASK)) {
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NL_SET_ERR_MSG(extack, "Unknown flag set in feature mask in metrics attribute");
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return -EINVAL;
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}
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metrics[type - 1] = val;
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}
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if (ecn_ca)
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metrics[RTAX_FEATURES - 1] |= DST_FEATURE_ECN_CA;
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return 0;
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}
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struct dst_metrics *ip_fib_metrics_init(struct nlattr *fc_mx,
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int fc_mx_len,
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struct netlink_ext_ack *extack)
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{
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struct dst_metrics *fib_metrics;
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int err;
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if (!fc_mx)
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return (struct dst_metrics *)&dst_default_metrics;
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fib_metrics = kzalloc_obj(*fib_metrics);
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if (unlikely(!fib_metrics))
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return ERR_PTR(-ENOMEM);
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err = ip_metrics_convert(fc_mx, fc_mx_len, fib_metrics->metrics,
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extack);
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if (!err) {
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refcount_set(&fib_metrics->refcnt, 1);
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} else {
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kfree(fib_metrics);
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fib_metrics = ERR_PTR(err);
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}
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return fib_metrics;
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}
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EXPORT_IPV6_MOD_GPL(ip_fib_metrics_init);
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