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authorBoris Pismenny <borisp@mellanox.com>2019-02-27 17:38:04 +0200
committerDavid S. Miller <davem@davemloft.net>2019-03-03 22:10:16 -0800
commit7463d3a2db0efea3701aab5eeb310e0d8157aff7 (patch)
tree1fd12490ff9e33b93b9b503c89e2c9cb48c08082 /net/tls
parent94850257cf0f88b20db7644f28bfedc7d284de15 (diff)
downloadlinux-7463d3a2db0efea3701aab5eeb310e0d8157aff7.tar.bz2
tls: Fix write space handling
TLS device cannot use the sw context. This patch returns the original tls device write space handler and moves the sw/device specific portions to the relevant files. Also, we remove the write_space call for the tls_sw flow, because it handles partial records in its delayed tx work handler. Fixes: a42055e8d2c3 ("net/tls: Add support for async encryption of records for performance") Signed-off-by: Boris Pismenny <borisp@mellanox.com> Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
-rw-r--r--net/tls/tls_device.c17
-rw-r--r--net/tls/tls_main.c15
-rw-r--r--net/tls/tls_sw.c13
3 files changed, 36 insertions, 9 deletions
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 3e5e8e021a87..4a1da837a733 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -546,6 +546,23 @@ static int tls_device_push_pending_record(struct sock *sk, int flags)
return tls_push_data(sk, &msg_iter, 0, flags, TLS_RECORD_TYPE_DATA);
}
+void tls_device_write_space(struct sock *sk, struct tls_context *ctx)
+{
+ int rc = 0;
+
+ if (!sk->sk_write_pending && tls_is_partially_sent_record(ctx)) {
+ gfp_t sk_allocation = sk->sk_allocation;
+
+ sk->sk_allocation = GFP_ATOMIC;
+ rc = tls_push_partial_record(sk, ctx,
+ MSG_DONTWAIT | MSG_NOSIGNAL);
+ sk->sk_allocation = sk_allocation;
+ }
+
+ if (!rc)
+ ctx->sk_write_space(sk);
+}
+
void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 7e05af75536d..17e8667917aa 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -212,7 +212,6 @@ int tls_push_partial_record(struct sock *sk, struct tls_context *ctx,
static void tls_write_space(struct sock *sk)
{
struct tls_context *ctx = tls_get_ctx(sk);
- struct tls_sw_context_tx *tx_ctx = tls_sw_ctx_tx(ctx);
/* If in_tcp_sendpages call lower protocol write space handler
* to ensure we wake up any waiting operations there. For example
@@ -223,14 +222,12 @@ static void tls_write_space(struct sock *sk)
return;
}
- /* Schedule the transmission if tx list is ready */
- if (is_tx_ready(tx_ctx) && !sk->sk_write_pending) {
- /* Schedule the transmission */
- if (!test_and_set_bit(BIT_TX_SCHEDULED, &tx_ctx->tx_bitmask))
- schedule_delayed_work(&tx_ctx->tx_work.work, 0);
- }
-
- ctx->sk_write_space(sk);
+#ifdef CONFIG_TLS_DEVICE
+ if (ctx->tx_conf == TLS_HW)
+ tls_device_write_space(sk, ctx);
+ else
+#endif
+ tls_sw_write_space(sk, ctx);
}
static void tls_ctx_free(struct tls_context *ctx)
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 1cc830582fa8..917caacd4d31 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -2126,6 +2126,19 @@ static void tx_work_handler(struct work_struct *work)
release_sock(sk);
}
+void tls_sw_write_space(struct sock *sk, struct tls_context *ctx)
+{
+ struct tls_sw_context_tx *tx_ctx = tls_sw_ctx_tx(ctx);
+
+ /* Schedule the transmission if tx list is ready */
+ if (is_tx_ready(tx_ctx) && !sk->sk_write_pending) {
+ /* Schedule the transmission */
+ if (!test_and_set_bit(BIT_TX_SCHEDULED,
+ &tx_ctx->tx_bitmask))
+ schedule_delayed_work(&tx_ctx->tx_work.work, 0);
+ }
+}
+
int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);