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tcp: constify tcp_v{4|6}_route_req() sock argument 

These functions do not change the listener socket.
Goal is to make sure tcp_conn_request() is not messing with
listener in a racy way.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-09-29 07:42:50 -07:00 committed by David S. Miller
parent 3f684b4b1f
commit f964629e33
3 changed files with 5 additions and 3 deletions
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2
include/net/tcp.h
View File

@ -1711,7 +1711,7 @@ struct tcp_request_sock_ops {
__u32 (*cookie_init_seq)(const struct sk_buff *skb,
__u16 *mss);
#endif
struct dst_entry *(*route_req)(struct sock *sk, struct flowi *fl,
struct dst_entry *(*route_req)(const struct sock *sk, struct flowi *fl,
const struct request_sock *req,
bool *strict);
__u32 (*init_seq)(const struct sk_buff *skb);

3
net/ipv4/tcp_ipv4.c
View File

@ -1180,7 +1180,8 @@ static void tcp_v4_init_req(struct request_sock *req,
ireq->opt = tcp_v4_save_options(skb);
}
static struct dst_entry *tcp_v4_route_req(struct sock *sk, struct flowi *fl,
static struct dst_entry *tcp_v4_route_req(const struct sock *sk,
struct flowi *fl,
const struct request_sock *req,
bool *strict)
{

3
net/ipv6/tcp_ipv6.c
View File

@ -689,7 +689,8 @@ static void tcp_v6_init_req(struct request_sock *req,
}
}
static struct dst_entry *tcp_v6_route_req(struct sock *sk, struct flowi *fl,
static struct dst_entry *tcp_v6_route_req(const struct sock *sk,
struct flowi *fl,
const struct request_sock *req,
bool *strict)
{