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net/tls: reorganize struct tls_context

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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: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2019-06-03 15:17:04 -07:00 committed by David S. Miller
parent 9cd81988cc
commit f0aaa2c975
1 changed files with 18 additions and 14 deletions
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32
include/net/tls.h
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@ -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;
struct list_head list;
struct net_device *netdev;
refcount_t refcount;
void *priv_ctx_tx;
void *priv_ctx_rx;
u8 tx_conf:3;
u8 rx_conf:3;
int (*push_pending_record)(struct sock *sk, int flags);
void (*sk_write_space)(struct sock *sk);
void *priv_ctx_tx;
void *priv_ctx_rx;
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 {