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ipv4: Make caller provide flowi4 key to inet_csk_route_req().

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This way the caller can get at the fully resolved fl4->{daddr,saddr}
etc.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-05-18 18:32:03 -04:00
parent 6882f933cc
commit 6bd023f3dd
4 changed files with 12 additions and 8 deletions
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1
include/net/inet_connection_sock.h
View File

@ -249,6 +249,7 @@ extern int inet_csk_bind_conflict(const struct sock *sk,
extern int inet_csk_get_port(struct sock *sk, unsigned short snum);
extern struct dst_entry* inet_csk_route_req(struct sock *sk,
struct flowi4 *fl4,
const struct request_sock *req);
extern struct dst_entry* inet_csk_route_child_sock(struct sock *sk,
struct sock *newsk,

3
net/dccp/ipv4.c
View File

@ -497,8 +497,9 @@ static int dccp_v4_send_response(struct sock *sk, struct request_sock *req,
int err = -1;
struct sk_buff *skb;
struct dst_entry *dst;
struct flowi4 fl4;
dst = inet_csk_route_req(sk, req);
dst = inet_csk_route_req(sk, &fl4, req);
if (dst == NULL)
goto out;

10
net/ipv4/inet_connection_sock.c
View File

@ -350,24 +350,24 @@ void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long len)
EXPORT_SYMBOL(inet_csk_reset_keepalive_timer);
struct dst_entry *inet_csk_route_req(struct sock *sk,
struct flowi4 *fl4,
const struct request_sock *req)
{
struct rtable *rt;
const struct inet_request_sock *ireq = inet_rsk(req);
struct ip_options_rcu *opt = inet_rsk(req)->opt;
struct net *net = sock_net(sk);
struct flowi4 fl4;
flowi4_init_output(&fl4, sk->sk_bound_dev_if, sk->sk_mark,
flowi4_init_output(fl4, sk->sk_bound_dev_if, sk->sk_mark,
RT_CONN_FLAGS(sk), RT_SCOPE_UNIVERSE,
sk->sk_protocol, inet_sk_flowi_flags(sk),
(opt && opt->opt.srr) ? opt->opt.faddr : ireq->rmt_addr,
ireq->loc_addr, ireq->rmt_port, inet_sk(sk)->inet_sport);
security_req_classify_flow(req, flowi4_to_flowi(&fl4));
rt = ip_route_output_flow(net, &fl4, sk);
security_req_classify_flow(req, flowi4_to_flowi(fl4));
rt = ip_route_output_flow(net, fl4, sk);
if (IS_ERR(rt))
goto no_route;
if (opt && opt->opt.is_strictroute && fl4.daddr != rt->rt_gateway)
if (opt && opt->opt.is_strictroute && fl4->daddr != rt->rt_gateway)
goto route_err;
return &rt->dst;

6
net/ipv4/tcp_ipv4.c
View File

@ -769,11 +769,12 @@ static int tcp_v4_send_synack(struct sock *sk, struct dst_entry *dst,
struct request_values *rvp)
{
const struct inet_request_sock *ireq = inet_rsk(req);
struct flowi4 fl4;
int err = -1;
struct sk_buff * skb;
/* First, grab a route. */
if (!dst && (dst = inet_csk_route_req(sk, req)) == NULL)
if (!dst && (dst = inet_csk_route_req(sk, &fl4, req)) == NULL)
return -1;
skb = tcp_make_synack(sk, dst, req, rvp);
@ -1338,6 +1339,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
req->cookie_ts = tmp_opt.tstamp_ok;
} else if (!isn) {
struct inet_peer *peer = NULL;
struct flowi4 fl4;
/* VJ's idea. We save last timestamp seen
* from the destination in peer table, when entering
@ -1350,7 +1352,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
*/
if (tmp_opt.saw_tstamp &&
tcp_death_row.sysctl_tw_recycle &&
(dst = inet_csk_route_req(sk, req)) != NULL &&
(dst = inet_csk_route_req(sk, &fl4, req)) != NULL &&
(peer = rt_get_peer((struct rtable *)dst)) != NULL &&
peer->daddr.addr.a4 == saddr) {
inet_peer_refcheck(peer);