net: shrink struct sock and request_sock by 8 bytes
One 32bit hole is following skc_refcnt, use it.
skc_incoming_cpu can also be an union for request_sock rcv_wnd.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sock.h b/include/net/sock.h
index 6571240..19cfe1f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -226,11 +226,18 @@
struct hlist_nulls_node skc_nulls_node;
};
int skc_tx_queue_mapping;
- int skc_incoming_cpu;
+ union {
+ int skc_incoming_cpu;
+ u32 skc_rcv_wnd;
+ };
atomic_t skc_refcnt;
/* private: */
int skc_dontcopy_end[0];
+ union {
+ u32 skc_rxhash;
+ u32 skc_window_clamp;
+ };
/* public: */
};
@@ -287,7 +294,6 @@
* @sk_rcvlowat: %SO_RCVLOWAT setting
* @sk_rcvtimeo: %SO_RCVTIMEO setting
* @sk_sndtimeo: %SO_SNDTIMEO setting
- * @sk_rxhash: flow hash received from netif layer
* @sk_txhash: computed flow hash for use on transmit
* @sk_filter: socket filtering instructions
* @sk_timer: sock cleanup timer
@@ -346,6 +352,7 @@
#define sk_cookie __sk_common.skc_cookie
#define sk_incoming_cpu __sk_common.skc_incoming_cpu
#define sk_flags __sk_common.skc_flags
+#define sk_rxhash __sk_common.skc_rxhash
socket_lock_t sk_lock;
struct sk_buff_head sk_receive_queue;
@@ -365,9 +372,6 @@
} sk_backlog;
#define sk_rmem_alloc sk_backlog.rmem_alloc
int sk_forward_alloc;
-#ifdef CONFIG_RPS
- __u32 sk_rxhash;
-#endif
__u32 sk_txhash;
#ifdef CONFIG_NET_RX_BUSY_POLL
