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| author |  Eric Dumazet <edumazet@google.com>
| 2015-03-12 16:44:06 -0700 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2015-03-12 22:58:13 -0400 |
| commit | 1e2e01172fd11b4dbfee746c0c8fbcaa9dbf22a0 (patch) | |
| tree | 8384ce93ce79c7fa49bb29349102dd2b4d1137fd /include | |
| parent | inet: add ireq_state field to inet_request_sock (diff) | |
| download | linux-1e2e01172fd11b4dbfee746c0c8fbcaa9dbf22a0.tar.gz linux-1e2e01172fd11b4dbfee746c0c8fbcaa9dbf22a0.tar.bz2 linux-1e2e01172fd11b4dbfee746c0c8fbcaa9dbf22a0.zip | |
inet: add rsk_refcnt/ireq_refcnt to request socks
When request socks will be in ehash, they'll need to be refcounted.
This patch adds rsk_refcnt/ireq_refcnt macros, and adds
reqsk_put() function, but nothing yet use them.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_sock.h | 1 | ||||
| -rw-r--r-- | include/net/request_sock.h | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h index b31f01de5cd6..9d6470c16a27 100644 --- a/include/net/inet_sock.h +++ b/include/net/inet_sock.h @@ -81,6 +81,7 @@ struct inet_request_sock { #define ir_cookie req.__req_common.skc_cookie #define ireq_net req.__req_common.skc_net #define ireq_state req.__req_common.skc_state +#define ireq_refcnt req.__req_common.skc_refcnt kmemcheck_bitfield_begin(flags); u16 snd_wscale : 4, diff --git a/include/net/request_sock.h b/include/net/request_sock.h index 7f830ff67f08..e255ecf8bb40 100644 --- a/include/net/request_sock.h +++ b/include/net/request_sock.h @@ -49,6 +49,8 @@ int inet_rtx_syn_ack(struct sock *parent, struct request_sock *req); */ struct request_sock { struct sock_common __req_common; +#define rsk_refcnt __req_common.skc_refcnt + struct request_sock *dl_next; u16 mss; u8 num_retrans; /* number of retransmits */ @@ -86,6 +88,12 @@ static inline void reqsk_free(struct request_sock *req) __reqsk_free(req); } +static inline void reqsk_put(struct request_sock *req) +{ + if (atomic_dec_and_test(&req->rsk_refcnt)) + reqsk_free(req); +} + extern int sysctl_max_syn_backlog; /** struct listen_sock - listen state |