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tls: add a helper to allocate/initialize offload_ctx_tx

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Simplify tls_set_device_offload a bit.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sabrina Dubroca 2023-10-09 22:50:49 +02:00 committed by David S. Miller
parent 1a074f7618
commit 0137407999
1 changed files with 25 additions and 14 deletions
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39
net/tls/tls_device.c
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@ -1033,6 +1033,30 @@ static void tls_device_attach(struct tls_context *ctx, struct sock *sk,
}
}
static struct tls_offload_context_tx *alloc_offload_ctx_tx(struct tls_context *ctx)
{
struct tls_offload_context_tx *offload_ctx;
__be64 rcd_sn;
offload_ctx = kzalloc(TLS_OFFLOAD_CONTEXT_SIZE_TX, GFP_KERNEL);
if (!offload_ctx)
return NULL;
INIT_WORK(&offload_ctx->destruct_work, tls_device_tx_del_task);
INIT_LIST_HEAD(&offload_ctx->records_list);
spin_lock_init(&offload_ctx->lock);
sg_init_table(offload_ctx->sg_tx_data,
ARRAY_SIZE(offload_ctx->sg_tx_data));
/* start at rec_seq - 1 to account for the start marker record */
memcpy(&rcd_sn, ctx->tx.rec_seq, sizeof(rcd_sn));
offload_ctx->unacked_record_sn = be64_to_cpu(rcd_sn) - 1;
offload_ctx->ctx = ctx;
return offload_ctx;
}
int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
@ -1044,7 +1068,6 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
struct net_device *netdev;
char *iv, *rec_seq;
struct sk_buff *skb;
__be64 rcd_sn;
int rc;
if (!ctx)
@ -1092,7 +1115,7 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
goto release_netdev;
}
offload_ctx = kzalloc(TLS_OFFLOAD_CONTEXT_SIZE_TX, GFP_KERNEL);
offload_ctx = alloc_offload_ctx_tx(ctx);
if (!offload_ctx) {
rc = -ENOMEM;
goto free_marker_record;
@ -1102,22 +1125,10 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
if (rc)
goto free_offload_ctx;
/* start at rec_seq - 1 to account for the start marker record */
memcpy(&rcd_sn, ctx->tx.rec_seq, sizeof(rcd_sn));
offload_ctx->unacked_record_sn = be64_to_cpu(rcd_sn) - 1;
start_marker_record->end_seq = tcp_sk(sk)->write_seq;
start_marker_record->len = 0;
start_marker_record->num_frags = 0;
INIT_WORK(&offload_ctx->destruct_work, tls_device_tx_del_task);
offload_ctx->ctx = ctx;
INIT_LIST_HEAD(&offload_ctx->records_list);
list_add_tail(&start_marker_record->list, &offload_ctx->records_list);
spin_lock_init(&offload_ctx->lock);
sg_init_table(offload_ctx->sg_tx_data,
ARRAY_SIZE(offload_ctx->sg_tx_data));
clean_acked_data_enable(inet_csk(sk), &tls_icsk_clean_acked);
ctx->push_pending_record = tls_device_push_pending_record;