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net/tls: pass record number as a byte array

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TLS offload code casts record number to a u64.  The buffer
should be aligned to 8 bytes, but its actually a __be64, and
the rest of the TLS code treats it as big int.  Make the
offload callbacks take a byte array, drivers can make the
choice to do the ugly cast if they want to.

Prepare for copying the record number onto the stack by
defining a constant for max size of the byte array.

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
2019-06-10 21:40:00 -07:00
committed by David S. Miller
parent 4967373959
commit 89fec474fa
4 changed files with 18 additions and 10 deletions
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5
include/net/tls.h
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@@ -62,6 +62,7 @@
#define TLS_DEVICE_NAME_MAX 32
#define MAX_IV_SIZE 16
#define TLS_MAX_REC_SEQ_SIZE 8
/* For AES-CCM, the full 16-bytes of IV is made of '4' fields of given sizes.
*
@@ -299,7 +300,7 @@ struct tlsdev_ops {
struct tls_context *ctx,
enum tls_offload_ctx_dir direction);
void (*tls_dev_resync_rx)(struct net_device *netdev,
struct sock *sk, u32 seq, u64 rcd_sn);
struct sock *sk, u32 seq, u8 *rcd_sn);
};
struct tls_offload_context_rx {
@@ -607,6 +608,6 @@ int tls_sw_fallback_init(struct sock *sk,
int tls_set_device_offload_rx(struct sock *sk, struct tls_context *ctx);
void tls_device_offload_cleanup_rx(struct sock *sk);
void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn);
void handle_device_resync(struct sock *sk, u32 seq);
#endif /* _TLS_OFFLOAD_H */