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author | David S. Miller <davem@davemloft.net> | 2019-06-07 20:00:14 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2019-06-07 20:00:14 +0200 |
commit | a6cdeeb16bff89c8486324f53577db058cbe81ba (patch) | |
tree | de2d38e10f5768bdf1d2902112a4803d0ae767f3 /net/tls | |
parent | Merge branch 'Xilinx-axienet-driver-updates' (diff) | |
parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
download | linux-a6cdeeb16bff89c8486324f53577db058cbe81ba.tar.xz linux-a6cdeeb16bff89c8486324f53577db058cbe81ba.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Some ISDN files that got removed in net-next had some changes
done in mainline, take the removals.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
-rw-r--r-- | net/tls/tls_device.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index 51e556e79371..43f2deb57078 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -550,11 +550,23 @@ void tls_device_write_space(struct sock *sk, struct tls_context *ctx) } } +static void tls_device_resync_rx(struct tls_context *tls_ctx, + struct sock *sk, u32 seq, u64 rcd_sn) +{ + struct net_device *netdev; + + if (WARN_ON(test_and_set_bit(TLS_RX_SYNC_RUNNING, &tls_ctx->flags))) + return; + netdev = READ_ONCE(tls_ctx->netdev); + if (netdev) + netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk, seq, rcd_sn); + clear_bit_unlock(TLS_RX_SYNC_RUNNING, &tls_ctx->flags); +} + void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn) { struct tls_context *tls_ctx = tls_get_ctx(sk); struct tls_offload_context_rx *rx_ctx; - struct net_device *netdev; u32 is_req_pending; s64 resync_req; u32 req_seq; @@ -570,12 +582,7 @@ void handle_device_resync(struct sock *sk, u32 seq, u64 rcd_sn) if (unlikely(is_req_pending) && req_seq == seq && atomic64_try_cmpxchg(&rx_ctx->resync_req, &resync_req, 0)) { seq += TLS_HEADER_SIZE - 1; - down_read(&device_offload_lock); - netdev = tls_ctx->netdev; - if (netdev) - netdev->tlsdev_ops->tls_dev_resync_rx(netdev, sk, seq, - rcd_sn); - up_read(&device_offload_lock); + tls_device_resync_rx(tls_ctx, sk, seq, rcd_sn); } } @@ -981,7 +988,10 @@ static int tls_device_down(struct net_device *netdev) if (ctx->rx_conf == TLS_HW) netdev->tlsdev_ops->tls_dev_del(netdev, ctx, TLS_OFFLOAD_CTX_DIR_RX); - ctx->netdev = NULL; + WRITE_ONCE(ctx->netdev, NULL); + smp_mb__before_atomic(); /* pairs with test_and_set_bit() */ + while (test_bit(TLS_RX_SYNC_RUNNING, &ctx->flags)) + usleep_range(10, 200); dev_put(netdev); list_del_init(&ctx->list); |