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Commit f0aaa2c9 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

net/tls: reorganize struct tls_context 



struct tls_context is slightly badly laid out.  If we reorder things
right we can save 16 bytes (320 -> 304) but also make all fast path
data fit into two cache lines (one read only and one read/write,
down from four cache lines).

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarDirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9cd81988

include/net/tls.h

+15 −11
Original line number Diff line number Diff line
@@ -236,34 +236,32 @@ struct tls_prot_info { 
};



struct tls_context {

	/* read-only cache line */

	struct tls_prot_info prot_info;



	union tls_crypto_context crypto_send;

	union tls_crypto_context crypto_recv;

	u8 tx_conf:3;

	u8 rx_conf:3;



	struct list_head list;

	struct net_device *netdev;

	refcount_t refcount;

	int (*push_pending_record)(struct sock *sk, int flags);

	void (*sk_write_space)(struct sock *sk);



	void *priv_ctx_tx;

	void *priv_ctx_rx;



	u8 tx_conf:3;

	u8 rx_conf:3;

	struct net_device *netdev;



	/* rw cache line */

	struct cipher_context tx;

	struct cipher_context rx;



	struct scatterlist *partially_sent_record;

	u16 partially_sent_offset;



	unsigned long flags;

	bool in_tcp_sendpages;

	bool pending_open_record_frags;

	unsigned long flags;



	int (*push_pending_record)(struct sock *sk, int flags);



	void (*sk_write_space)(struct sock *sk);

	/* cache cold stuff */

	void (*sk_destruct)(struct sock *sk);

	void (*sk_proto_close)(struct sock *sk, long timeout);
@@ -275,6 +273,12 @@ struct tls_context { 
			   int __user *optlen);

	int  (*hash)(struct sock *sk);

	void (*unhash)(struct sock *sk);



	union tls_crypto_context crypto_send;

	union tls_crypto_context crypto_recv;



	struct list_head list;

	refcount_t refcount;

};



enum tls_offload_ctx_dir {