mirror of
https://github.com/torvalds/linux.git
synced 2024-11-02 10:11:36 +00:00
b4ace4f1ae
Marc Dionne discovered a NULL pointer dereference when setting
SO_REUSEPORT on a socket after it is bound.
This patch removes the assumption that at least one socket in the
reuseport group is bound with the SO_REUSEPORT option before other
bind calls occur.
Fixes: e32ea7e747 ("soreuseport: fast reuseport UDP socket selection")
Reported-by: Marc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: Craig Gallek <kraig@google.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
29 lines
824 B
C
29 lines
824 B
C
#ifndef _SOCK_REUSEPORT_H
|
|
#define _SOCK_REUSEPORT_H
|
|
|
|
#include <linux/filter.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/types.h>
|
|
#include <net/sock.h>
|
|
|
|
struct sock_reuseport {
|
|
struct rcu_head rcu;
|
|
|
|
u16 max_socks; /* length of socks */
|
|
u16 num_socks; /* elements in socks */
|
|
struct bpf_prog __rcu *prog; /* optional BPF sock selector */
|
|
struct sock *socks[0]; /* array of sock pointers */
|
|
};
|
|
|
|
extern int reuseport_alloc(struct sock *sk);
|
|
extern int reuseport_add_sock(struct sock *sk, struct sock *sk2);
|
|
extern void reuseport_detach_sock(struct sock *sk);
|
|
extern struct sock *reuseport_select_sock(struct sock *sk,
|
|
u32 hash,
|
|
struct sk_buff *skb,
|
|
int hdr_len);
|
|
extern struct bpf_prog *reuseport_attach_prog(struct sock *sk,
|
|
struct bpf_prog *prog);
|
|
|
|
#endif /* _SOCK_REUSEPORT_H */
|