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sctp: add skb_sdif in struct sctp_af

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Add skb_sdif function in struct sctp_af to get the enslaved device
for both ipv4 and ipv6 when adding SCTP VRF support in sctp_rcv in
the next patch.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2022-11-16 15:01:19 -05:00 committed by David S. Miller
parent f87b1ac06c
commit 33e93ed220
3 changed files with 14 additions and 1 deletions
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1
include/net/sctp/structs.h
View file

@ -477,6 +477,7 @@ struct sctp_af {
int (*available) (union sctp_addr *,
struct sctp_sock *);
int (*skb_iif) (const struct sk_buff *sk);
int (*skb_sdif)(const struct sk_buff *sk);
int (*is_ce) (const struct sk_buff *sk);
void (*seq_dump_addr)(struct seq_file *seq,
union sctp_addr *addr);

8
net/sctp/ipv6.c
View file

@ -842,7 +842,12 @@ static int sctp_v6_addr_to_user(struct sctp_sock *sp, union sctp_addr *addr)
/* Where did this skb come from? */
static int sctp_v6_skb_iif(const struct sk_buff *skb)
{
return IP6CB(skb)->iif;
return inet6_iif(skb);
}
static int sctp_v6_skb_sdif(const struct sk_buff *skb)
{
return inet6_sdif(skb);
}
/* Was this packet marked by Explicit Congestion Notification? */
@ -1142,6 +1147,7 @@ static struct sctp_af sctp_af_inet6 = {
.is_any = sctp_v6_is_any,
.available = sctp_v6_available,
.skb_iif = sctp_v6_skb_iif,
.skb_sdif = sctp_v6_skb_sdif,
.is_ce = sctp_v6_is_ce,
.seq_dump_addr = sctp_v6_seq_dump_addr,
.ecn_capable = sctp_v6_ecn_capable,

6
net/sctp/protocol.c
View file

@ -567,6 +567,11 @@ static int sctp_v4_skb_iif(const struct sk_buff *skb)
return inet_iif(skb);
}
static int sctp_v4_skb_sdif(const struct sk_buff *skb)
{
return inet_sdif(skb);
}
/* Was this packet marked by Explicit Congestion Notification? */
static int sctp_v4_is_ce(const struct sk_buff *skb)
{
@ -1185,6 +1190,7 @@ static struct sctp_af sctp_af_inet = {
.available = sctp_v4_available,
.scope = sctp_v4_scope,
.skb_iif = sctp_v4_skb_iif,
.skb_sdif = sctp_v4_skb_sdif,
.is_ce = sctp_v4_is_ce,
.seq_dump_addr = sctp_v4_seq_dump_addr,
.ecn_capable = sctp_v4_ecn_capable,