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authorDavid Ahern <dsahern@gmail.com>2017-08-28 15:14:20 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-28 15:17:29 -0700
commita8e3bb347d8c32c25830af55466e08979df4e2be (patch)
treef9e285520f67cb9a7295a20c4da65798e098bb06 /net/ipv4
parentcc8737a5fe9051b7fa052b08c57ddb9f539c389a (diff)
net: Add comment that early_demux can change via sysctl
Twice patches trying to constify inet{6}_protocol have been reverted: 39294c3df2a8 ("Revert "ipv6: constify inet6_protocol structures"") to revert 3a3a4e3054137 and then 03157937fe0b5 ("Revert "ipv4: make net_protocol const"") to revert aa8db499ea67. Add a comment that the structures can not be const because the early_demux field can change based on a sysctl. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/af_inet.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index d678820e4306..e31108e5ef79 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1596,6 +1596,9 @@ static const struct net_protocol igmp_protocol = {
};
#endif
+/* thinking of making this const? Don't.
+ * early_demux can change based on sysctl.
+ */
static struct net_protocol tcp_protocol = {
.early_demux = tcp_v4_early_demux,
.early_demux_handler = tcp_v4_early_demux,
@@ -1606,6 +1609,9 @@ static struct net_protocol tcp_protocol = {
.icmp_strict_tag_validation = 1,
};
+/* thinking of making this const? Don't.
+ * early_demux can change based on sysctl.
+ */
static struct net_protocol udp_protocol = {
.early_demux = udp_v4_early_demux,
.early_demux_handler = udp_v4_early_demux,