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authorAtul Gupta <atul.gupta@chelsio.com>2019-01-17 20:55:53 -0800
committerDavid S. Miller <davem@davemloft.net>2019-01-22 11:30:54 -0800
commit63a6b3fee428aeb0288670fc061fa9559b5aca1b (patch)
tree5316d8b47a4733045ad0d73a3b336a2b0739f7a6 /net/tls
parent856c395cfa63b94a1d8215182f0243c222f6f927 (diff)
downloadlinux-63a6b3fee428aeb0288670fc061fa9559b5aca1b.tar.bz2
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 <28cb6f1eaffdc5a6a9707cac55f4a43aa3fd7895> Signed-off-by: Atul Gupta <atul.gupta@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
-rw-r--r--net/tls/tls_main.c54
1 files changed, 32 insertions, 22 deletions
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 78cb4a584080..fc97a105ebc2 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -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);