stop_room += mlx5e_stop_room_for_wqe(mdev, MLX5E_TLS_SET_STATIC_PARAMS_WQEBBS);
stop_room += mlx5e_stop_room_for_wqe(mdev, MLX5E_TLS_SET_PROGRESS_PARAMS_WQEBBS);
stop_room += num_dumps * mlx5e_stop_room_for_wqe(mdev, MLX5E_KTLS_DUMP_WQEBBS);
+ stop_room += 1; /* fence nop */
return stop_room;
}
}
struct mlx5e_ktls_offload_context_tx {
- struct tls_offload_context_tx *tx_ctx;
- struct tls12_crypto_info_aes_gcm_128 crypto_info;
- struct mlx5e_tls_sw_stats *sw_stats;
+ /* fast path */
u32 expected_seq;
u32 tisn;
- u32 key_id;
bool ctx_post_pending;
+ /* control / resync */
+ struct list_head list_node; /* member of the pool */
+ struct tls12_crypto_info_aes_gcm_128 crypto_info;
+ struct tls_offload_context_tx *tx_ctx;
+ struct mlx5_core_dev *mdev;
+ struct mlx5e_tls_sw_stats *sw_stats;
+ u32 key_id;
};
static void
return *ctx;
}
+static struct mlx5e_ktls_offload_context_tx *
+mlx5e_tls_priv_tx_init(struct mlx5_core_dev *mdev, struct mlx5e_tls_sw_stats *sw_stats)
+{
+ struct mlx5e_ktls_offload_context_tx *priv_tx;
+ int err;
+
+ priv_tx = kzalloc(sizeof(*priv_tx), GFP_KERNEL);
+ if (!priv_tx)
+ return ERR_PTR(-ENOMEM);
+
+ priv_tx->mdev = mdev;
+ priv_tx->sw_stats = sw_stats;
+
+ err = mlx5e_ktls_create_tis(mdev, &priv_tx->tisn);
+ if (err) {
+ kfree(priv_tx);
+ return ERR_PTR(err);
+ }
+
+ return priv_tx;
+}
+
+static void mlx5e_tls_priv_tx_cleanup(struct mlx5e_ktls_offload_context_tx *priv_tx)
+{
+ mlx5e_destroy_tis(priv_tx->mdev, priv_tx->tisn);
+ kfree(priv_tx);
+}
+
+static void mlx5e_tls_priv_tx_list_cleanup(struct list_head *list)
+{
+ struct mlx5e_ktls_offload_context_tx *obj;
+
+ list_for_each_entry(obj, list, list_node)
+ mlx5e_tls_priv_tx_cleanup(obj);
+}
+
+/* Recycling pool API */
+
+struct mlx5e_tls_tx_pool {
+ struct mlx5_core_dev *mdev;
+ struct mlx5e_tls_sw_stats *sw_stats;
+ struct mutex lock; /* Protects access to the pool */
+ struct list_head list;
+#define MLX5E_TLS_TX_POOL_MAX_SIZE (256)
+ size_t size;
+};
+
+static struct mlx5e_tls_tx_pool *mlx5e_tls_tx_pool_init(struct mlx5_core_dev *mdev,
+ struct mlx5e_tls_sw_stats *sw_stats)
+{
+ struct mlx5e_tls_tx_pool *pool;
+
+ pool = kvzalloc(sizeof(*pool), GFP_KERNEL);
+ if (!pool)
+ return NULL;
+
+ INIT_LIST_HEAD(&pool->list);
+ mutex_init(&pool->lock);
+
+ pool->mdev = mdev;
+ pool->sw_stats = sw_stats;
+
+ return pool;
+}
+
+static void mlx5e_tls_tx_pool_cleanup(struct mlx5e_tls_tx_pool *pool)
+{
+ mlx5e_tls_priv_tx_list_cleanup(&pool->list);
+ atomic64_add(pool->size, &pool->sw_stats->tx_tls_pool_free);
+ kvfree(pool);
+}
+
+static void pool_push(struct mlx5e_tls_tx_pool *pool, struct mlx5e_ktls_offload_context_tx *obj)
+{
+ mutex_lock(&pool->lock);
+ if (pool->size >= MLX5E_TLS_TX_POOL_MAX_SIZE) {
+ mutex_unlock(&pool->lock);
+ mlx5e_tls_priv_tx_cleanup(obj);
+ atomic64_inc(&pool->sw_stats->tx_tls_pool_free);
+ return;
+ }
+ list_add(&obj->list_node, &pool->list);
+ pool->size++;
+ mutex_unlock(&pool->lock);
+}
+
+static struct mlx5e_ktls_offload_context_tx *pool_pop(struct mlx5e_tls_tx_pool *pool)
+{
+ struct mlx5e_ktls_offload_context_tx *obj;
+
+ mutex_lock(&pool->lock);
+ if (pool->size == 0) {
+ obj = mlx5e_tls_priv_tx_init(pool->mdev, pool->sw_stats);
+ if (!IS_ERR(obj))
+ atomic64_inc(&pool->sw_stats->tx_tls_pool_alloc);
+ goto out;
+ }
+
+ obj = list_first_entry(&pool->list, struct mlx5e_ktls_offload_context_tx,
+ list_node);
+ list_del(&obj->list_node);
+ pool->size--;
+out:
+ mutex_unlock(&pool->lock);
+ return obj;
+}
+
+/* End of pool API */
+
int mlx5e_ktls_add_tx(struct net_device *netdev, struct sock *sk,
struct tls_crypto_info *crypto_info, u32 start_offload_tcp_sn)
{
struct mlx5e_ktls_offload_context_tx *priv_tx;
+ struct mlx5e_tls_tx_pool *pool;
struct tls_context *tls_ctx;
- struct mlx5_core_dev *mdev;
struct mlx5e_priv *priv;
int err;
tls_ctx = tls_get_ctx(sk);
priv = netdev_priv(netdev);
- mdev = priv->mdev;
+ pool = priv->tls->tx_pool;
- priv_tx = kzalloc(sizeof(*priv_tx), GFP_KERNEL);
- if (!priv_tx)
- return -ENOMEM;
+ priv_tx = pool_pop(pool);
+ if (IS_ERR(priv_tx))
+ return PTR_ERR(priv_tx);
- err = mlx5_ktls_create_key(mdev, crypto_info, &priv_tx->key_id);
+ err = mlx5_ktls_create_key(pool->mdev, crypto_info, &priv_tx->key_id);
if (err)
goto err_create_key;
- priv_tx->sw_stats = &priv->tls->sw_stats;
priv_tx->expected_seq = start_offload_tcp_sn;
priv_tx->crypto_info =
*(struct tls12_crypto_info_aes_gcm_128 *)crypto_info;
mlx5e_set_ktls_tx_priv_ctx(tls_ctx, priv_tx);
- err = mlx5e_ktls_create_tis(mdev, &priv_tx->tisn);
- if (err)
- goto err_create_tis;
-
priv_tx->ctx_post_pending = true;
atomic64_inc(&priv_tx->sw_stats->tx_tls_ctx);
return 0;
-err_create_tis:
- mlx5_ktls_destroy_key(mdev, priv_tx->key_id);
err_create_key:
- kfree(priv_tx);
+ pool_push(pool, priv_tx);
return err;
}
void mlx5e_ktls_del_tx(struct net_device *netdev, struct tls_context *tls_ctx)
{
struct mlx5e_ktls_offload_context_tx *priv_tx;
- struct mlx5_core_dev *mdev;
+ struct mlx5e_tls_tx_pool *pool;
struct mlx5e_priv *priv;
priv_tx = mlx5e_get_ktls_tx_priv_ctx(tls_ctx);
priv = netdev_priv(netdev);
- mdev = priv->mdev;
+ pool = priv->tls->tx_pool;
atomic64_inc(&priv_tx->sw_stats->tx_tls_del);
- mlx5e_destroy_tis(mdev, priv_tx->tisn);
- mlx5_ktls_destroy_key(mdev, priv_tx->key_id);
- kfree(priv_tx);
+ mlx5_ktls_destroy_key(priv_tx->mdev, priv_tx->key_id);
+ pool_push(pool, priv_tx);
}
static void tx_fill_wi(struct mlx5e_txqsq *sq,
sq->pc += num_wqebbs;
}
+static void tx_post_fence_nop(struct mlx5e_txqsq *sq)
+{
+ struct mlx5_wq_cyc *wq = &sq->wq;
+ u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
+
+ tx_fill_wi(sq, pi, 1, 0, NULL);
+
+ mlx5e_post_nop_fence(wq, sq->sqn, &sq->pc);
+}
+
static void
mlx5e_ktls_tx_post_param_wqes(struct mlx5e_txqsq *sq,
struct mlx5e_ktls_offload_context_tx *priv_tx,
post_static_params(sq, priv_tx, fence_first_post);
post_progress_params(sq, priv_tx, progress_fence);
+ tx_post_fence_nop(sq);
}
struct tx_sync_info {
}
static int
-tx_post_resync_dump(struct mlx5e_txqsq *sq, skb_frag_t *frag, u32 tisn, bool first)
+tx_post_resync_dump(struct mlx5e_txqsq *sq, skb_frag_t *frag, u32 tisn)
{
struct mlx5_wqe_ctrl_seg *cseg;
struct mlx5_wqe_data_seg *dseg;
cseg->opmod_idx_opcode = cpu_to_be32((sq->pc << 8) | MLX5_OPCODE_DUMP);
cseg->qpn_ds = cpu_to_be32((sq->sqn << 8) | ds_cnt);
cseg->tis_tir_num = cpu_to_be32(tisn << 8);
- cseg->fm_ce_se = first ? MLX5_FENCE_MODE_INITIATOR_SMALL : 0;
fsz = skb_frag_size(frag);
dma_addr = skb_frag_dma_map(sq->pdev, frag, 0, fsz,
stats->tls_dump_bytes += wi->num_bytes;
}
-static void tx_post_fence_nop(struct mlx5e_txqsq *sq)
-{
- struct mlx5_wq_cyc *wq = &sq->wq;
- u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
-
- tx_fill_wi(sq, pi, 1, 0, NULL);
-
- mlx5e_post_nop_fence(wq, sq->sqn, &sq->pc);
-}
-
static enum mlx5e_ktls_sync_retval
mlx5e_ktls_tx_handle_ooo(struct mlx5e_ktls_offload_context_tx *priv_tx,
struct mlx5e_txqsq *sq,
tx_post_resync_params(sq, priv_tx, info.rcd_sn);
- /* If no dump WQE was sent, we need to have a fence NOP WQE before the
- * actual data xmit.
- */
- if (!info.nr_frags) {
- tx_post_fence_nop(sq);
- return MLX5E_KTLS_SYNC_DONE;
- }
-
for (i = 0; i < info.nr_frags; i++) {
unsigned int orig_fsz, frag_offset = 0, n = 0;
skb_frag_t *f = &info.frags[i];
orig_fsz = skb_frag_size(f);
do {
- bool fence = !(i || frag_offset);
unsigned int fsz;
n++;
fsz = min_t(unsigned int, sq->hw_mtu, orig_fsz - frag_offset);
skb_frag_size_set(f, fsz);
- if (tx_post_resync_dump(sq, f, priv_tx->tisn, fence)) {
+ if (tx_post_resync_dump(sq, f, priv_tx->tisn)) {
page_ref_add(skb_frag_page(f), n - 1);
goto err_out;
}
priv_tx = mlx5e_get_ktls_tx_priv_ctx(tls_ctx);
- if (unlikely(mlx5e_ktls_tx_offload_test_and_clear_pending(priv_tx))) {
+ if (unlikely(mlx5e_ktls_tx_offload_test_and_clear_pending(priv_tx)))
mlx5e_ktls_tx_post_param_wqes(sq, priv_tx, false, false);
- }
seq = ntohl(tcp_hdr(skb)->seq);
if (unlikely(priv_tx->expected_seq != seq)) {
dev_kfree_skb_any(skb);
return false;
}
+
+int mlx5e_ktls_init_tx(struct mlx5e_priv *priv)
+{
+ if (!mlx5e_is_ktls_tx(priv->mdev))
+ return 0;
+
+ priv->tls->tx_pool = mlx5e_tls_tx_pool_init(priv->mdev, &priv->tls->sw_stats);
+ if (!priv->tls->tx_pool)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx5e_ktls_cleanup_tx(struct mlx5e_priv *priv)
+{
+ if (!mlx5e_is_ktls_tx(priv->mdev))
+ return;
+
+ mlx5e_tls_tx_pool_cleanup(priv->tls->tx_pool);
+ priv->tls->tx_pool = NULL;
+}
projects / mirror_ubuntu-kernels.git / commitdiff