diff options
| author | Florian Westphal <fw@strlen.de> | 2021-04-08 19:45:02 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-04-09 16:34:56 -0700 |
| commit | b98b33043c95a3886b5feb73814f8882a9cceaad (patch) | |
| tree | 31401777c26631c195a12e9c706be063419fba0d /net/dccp/ipv6.c | |
| parent | 4438669eb703d1a7416c2b19a8a15b0400b36738 (diff) | |
net: dccp: use net_generic storage
DCCP is virtually never used, so no need to use space in struct net for it.
Put the pernet ipv4/v6 socket in the dccp ipv4/ipv6 modules instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20210408174502.1625-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/dccp/ipv6.c')
| -rw-r--r-- | net/dccp/ipv6.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index 2be5c69824f9..6f5304db5a67 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -27,13 +27,20 @@ #include <net/ip6_checksum.h> #include <net/xfrm.h> #include <net/secure_seq.h> +#include <net/netns/generic.h> #include <net/sock.h> #include "dccp.h" #include "ipv6.h" #include "feat.h" -/* The per-net dccp.v6_ctl_sk is used for sending RSTs and ACKs */ +struct dccp_v6_pernet { + struct sock *v6_ctl_sk; +}; + +static unsigned int dccp_v6_pernet_id __read_mostly; + +/* The per-net v6_ctl_sk is used for sending RSTs and ACKs */ static const struct inet_connection_sock_af_ops dccp_ipv6_mapped; static const struct inet_connection_sock_af_ops dccp_ipv6_af_ops; @@ -254,7 +261,8 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb) struct sk_buff *skb; struct flowi6 fl6; struct net *net = dev_net(skb_dst(rxskb)->dev); - struct sock *ctl_sk = net->dccp.v6_ctl_sk; + struct dccp_v6_pernet *pn; + struct sock *ctl_sk; struct dst_entry *dst; if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET) @@ -263,6 +271,8 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb) if (!ipv6_unicast_destination(rxskb)) return; + pn = net_generic(net, dccp_v6_pernet_id); + ctl_sk = pn->v6_ctl_sk; skb = dccp_ctl_make_reset(ctl_sk, rxskb); if (skb == NULL) return; @@ -1089,16 +1099,20 @@ static struct inet_protosw dccp_v6_protosw = { static int __net_init dccp_v6_init_net(struct net *net) { + struct dccp_v6_pernet *pn = net_generic(net, dccp_v6_pernet_id); + if (dccp_hashinfo.bhash == NULL) return -ESOCKTNOSUPPORT; - return inet_ctl_sock_create(&net->dccp.v6_ctl_sk, PF_INET6, + return inet_ctl_sock_create(&pn->v6_ctl_sk, PF_INET6, SOCK_DCCP, IPPROTO_DCCP, net); } static void __net_exit dccp_v6_exit_net(struct net *net) { - inet_ctl_sock_destroy(net->dccp.v6_ctl_sk); + struct dccp_v6_pernet *pn = net_generic(net, dccp_v6_pernet_id); + + inet_ctl_sock_destroy(pn->v6_ctl_sk); } static void __net_exit dccp_v6_exit_batch(struct list_head *net_exit_list) @@ -1110,6 +1124,8 @@ static struct pernet_operations dccp_v6_ops = { .init = dccp_v6_init_net, .exit = dccp_v6_exit_net, .exit_batch = dccp_v6_exit_batch, + .id = &dccp_v6_pernet_id, + .size = sizeof(struct dccp_v6_pernet), }; static int __init dccp_v6_init(void) |