tcp: Namespace-ify sysctl_tcp_default_congestion_control

Make default TCP default congestion control to a per namespace
value. This changes default congestion control to a pointer to congestion ops
(rather than implicit as first element of available lsit).

The congestion control setting of new namespaces is inherited
from the current setting of the root namespace.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 589caaa90613..f04d944f8abe 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -710,7 +710,7 @@ bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi)
                         bool ecn_ca = false;
 
                         nla_strlcpy(tmp, nla, sizeof(tmp));
-                        val = tcp_ca_get_key_by_name(tmp, &ecn_ca);
+                        val = tcp_ca_get_key_by_name(fi->fib_net, tmp, &ecn_ca);
                 } else {
                         val = nla_get_u32(nla);
                 }
@@ -1030,7 +1030,7 @@ fib_convert_metrics(struct fib_info *fi, const struct fib_config *cfg)
                         char tmp[TCP_CA_NAME_MAX];
 
                         nla_strlcpy(tmp, nla, sizeof(tmp));
-                        val = tcp_ca_get_key_by_name(tmp, &ecn_ca);
+                        val = tcp_ca_get_key_by_name(fi->fib_net, tmp, &ecn_ca);
                         if (val == TCP_CA_UNSPEC)
                                 return -EINVAL;
                 } else {