Commit 63a6b3fe authored by Atul Gupta's avatar Atul Gupta Committed by David S. Miller
Browse files

net/tls: build_protos moved to common routine 



build protos is required for tls_hw_prot also hence moved to
'tls_build_proto' and called as required from tls_init
and tls_hw_proto. This is required since build_protos
for v4 is moved from tls_register to tls_init in
commit <28cb6f1e>

Signed-off-by: default avatarAtul Gupta <atul.gupta@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 856c395c

net/tls/tls_main.c

+32 −22
Original line number Diff line number Diff line
@@ -61,6 +61,8 @@ static LIST_HEAD(device_list); 
static DEFINE_SPINLOCK(device_spinlock);

static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG];

static struct proto_ops tls_sw_proto_ops;

static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],

			 struct proto *base);



static void update_sk_prot(struct sock *sk, struct tls_context *ctx)

{
@@ -551,6 +553,32 @@ static struct tls_context *create_ctx(struct sock *sk) 
	return ctx;

}



static void tls_build_proto(struct sock *sk)

{

	int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4;



	/* Build IPv6 TLS whenever the address of tcpv6 _prot changes */

	if (ip_ver == TLSV6 &&

	    unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv6_prot))) {

		mutex_lock(&tcpv6_prot_mutex);

		if (likely(sk->sk_prot != saved_tcpv6_prot)) {

			build_protos(tls_prots[TLSV6], sk->sk_prot);

			smp_store_release(&saved_tcpv6_prot, sk->sk_prot);

		}

		mutex_unlock(&tcpv6_prot_mutex);

	}



	if (ip_ver == TLSV4 &&

	    unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv4_prot))) {

		mutex_lock(&tcpv4_prot_mutex);

		if (likely(sk->sk_prot != saved_tcpv4_prot)) {

			build_protos(tls_prots[TLSV4], sk->sk_prot);

			smp_store_release(&saved_tcpv4_prot, sk->sk_prot);

		}

		mutex_unlock(&tcpv4_prot_mutex);

	}

}



static int tls_hw_prot(struct sock *sk)

{

	struct tls_context *ctx;
@@ -564,12 +592,15 @@ static int tls_hw_prot(struct sock *sk) 
			if (!ctx)

				goto out;



			spin_unlock_bh(&device_spinlock);

			tls_build_proto(sk);

			ctx->hash = sk->sk_prot->hash;

			ctx->unhash = sk->sk_prot->unhash;

			ctx->sk_proto_close = sk->sk_prot->close;

			ctx->rx_conf = TLS_HW_RECORD;

			ctx->tx_conf = TLS_HW_RECORD;

			update_sk_prot(sk, ctx);

			spin_lock_bh(&device_spinlock);

			rc = 1;

			break;

		}
@@ -668,7 +699,6 @@ static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], 


static int tls_init(struct sock *sk)

{

	int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4;

	struct tls_context *ctx;

	int rc = 0;
@@ -691,27 +721,7 @@ static int tls_init(struct sock *sk) 
		goto out;

	}



	/* Build IPv6 TLS whenever the address of tcpv6	_prot changes */

	if (ip_ver == TLSV6 &&

	    unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv6_prot))) {

		mutex_lock(&tcpv6_prot_mutex);

		if (likely(sk->sk_prot != saved_tcpv6_prot)) {

			build_protos(tls_prots[TLSV6], sk->sk_prot);

			smp_store_release(&saved_tcpv6_prot, sk->sk_prot);

		}

		mutex_unlock(&tcpv6_prot_mutex);

	}



	if (ip_ver == TLSV4 &&

	    unlikely(sk->sk_prot != smp_load_acquire(&saved_tcpv4_prot))) {

		mutex_lock(&tcpv4_prot_mutex);

		if (likely(sk->sk_prot != saved_tcpv4_prot)) {

			build_protos(tls_prots[TLSV4], sk->sk_prot);

			smp_store_release(&saved_tcpv4_prot, sk->sk_prot);

		}

		mutex_unlock(&tcpv4_prot_mutex);

	}



	tls_build_proto(sk);

	ctx->tx_conf = TLS_BASE;

	ctx->rx_conf = TLS_BASE;

	update_sk_prot(sk, ctx);

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