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tcp/dccp: constify rtx_synack() and friends

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This is done to make sure we do not change listener socket
while sending SYNACK packets while socket lock is not held.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2015-09-25 07:39:23 -07:00
committed by David S. Miller
parent 802885fc04
commit ea3bea3a1d
5 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/request_sock.h
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@@ -32,7 +32,7 @@ struct request_sock_ops {
int obj_size; int obj_size;
struct kmem_cache *slab; struct kmem_cache *slab;
char *slab_name; char *slab_name;
int (*rtx_syn_ack)(struct sock *sk, int (*rtx_syn_ack)(const struct sock *sk,
struct request_sock *req); struct request_sock *req);
void (*send_ack)(struct sock *sk, struct sk_buff *skb, void (*send_ack)(struct sock *sk, struct sk_buff *skb,
struct request_sock *req); struct request_sock *req);

2
include/net/tcp.h
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@@ -1676,7 +1676,7 @@ int tcp4_proc_init(void);
void tcp4_proc_exit(void); void tcp4_proc_exit(void);
#endif #endif
int tcp_rtx_synack(struct sock *sk, struct request_sock *req); int tcp_rtx_synack(const struct sock *sk, struct request_sock *req);
int tcp_conn_request(struct request_sock_ops *rsk_ops, int tcp_conn_request(struct request_sock_ops *rsk_ops,
const struct tcp_request_sock_ops *af_ops, const struct tcp_request_sock_ops *af_ops,
struct sock *sk, struct sk_buff *skb); struct sock *sk, struct sk_buff *skb);

2
net/dccp/ipv4.c
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@@ -498,7 +498,7 @@ static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
return &rt->dst; return &rt->dst;
} }
static int dccp_v4_send_response(struct sock *sk, struct request_sock *req) static int dccp_v4_send_response(const struct sock *sk, struct request_sock *req)
{ {
int err = -1; int err = -1;
struct sk_buff *skb; struct sk_buff *skb;

2
net/dccp/ipv6.c
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@@ -181,7 +181,7 @@ out:
} }
static int dccp_v6_send_response(struct sock *sk, struct request_sock *req) static int dccp_v6_send_response(const struct sock *sk, struct request_sock *req)
{ {
struct inet_request_sock *ireq = inet_rsk(req); struct inet_request_sock *ireq = inet_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk); struct ipv6_pinfo *np = inet6_sk(sk);

2
net/ipv4/tcp_output.c
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@@ -3502,7 +3502,7 @@ void tcp_send_probe0(struct sock *sk)
TCP_RTO_MAX); TCP_RTO_MAX);
} }
int tcp_rtx_synack(struct sock *sk, struct request_sock *req) int tcp_rtx_synack(const struct sock *sk, struct request_sock *req)
{ {
const struct tcp_request_sock_ops *af_ops = tcp_rsk(req)->af_specific; const struct tcp_request_sock_ops *af_ops = tcp_rsk(req)->af_specific;
struct flowi fl; struct flowi fl;