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Commit 99d4dc66 authored by Lior Nahmanson's avatar Lior Nahmanson Committed by David S. Miller
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net/mlx5e: Add support to configure more than one macsec offload device 

Add the ability to add up to 16 MACsec offload interfaces
over the same physical interface
Signed-off-by: default avatarLior Nahmanson <liorna@nvidia.com>
Reviewed-by: default avatarRaed Salem <raeds@nvidia.com>
Signed-off-by: default avatarRaed Salem <raeds@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 807a1b76
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Inline Side-by-side
Showing with 175 additions and 46 deletions
drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
View file @ 99d4dc66
......@@ -51,10 +51,18 @@ static const struct rhashtable_params rhash_sci = {
.min_size = 1,
};
struct mlx5e_macsec {
struct mlx5e_macsec_fs *macsec_fs;
struct mlx5e_macsec_device {
const struct net_device *netdev;
struct mlx5e_macsec_sa *tx_sa[MACSEC_NUM_AN];
struct list_head macsec_rx_sc_list_head;
unsigned char *dev_addr;
struct list_head macsec_device_list_element;
};
struct mlx5e_macsec {
struct list_head macsec_device_list_head;
int num_of_devices;
struct mlx5e_macsec_fs *macsec_fs;
struct mutex lock; /* Protects mlx5e_macsec internal contexts */
/* Global PD for MACsec object ASO context */
......@@ -66,7 +74,6 @@ struct mlx5e_macsec {
/* Rx fs_id -> rx_sc mapping */
struct xarray sc_xarray;
unsigned char *dev_addr;
struct mlx5_core_dev *mdev;
/* Stats manage */
......@@ -283,12 +290,29 @@ static bool mlx5e_macsec_secy_features_validate(struct macsec_context *ctx)
return true;
}
static struct mlx5e_macsec_device *
mlx5e_macsec_get_macsec_device_context(const struct mlx5e_macsec *macsec,
const struct macsec_context *ctx)
{
struct mlx5e_macsec_device *iter;
const struct list_head *list;
list = &macsec->macsec_device_list_head;
list_for_each_entry_rcu(iter, list, macsec_device_list_element) {
if (iter->netdev == ctx->secy->netdev)
return iter;
}
return NULL;
}
static int mlx5e_macsec_add_txsa(struct macsec_context *ctx)
{
const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct macsec_secy *secy = ctx->secy;
struct mlx5e_macsec_device *macsec_device;
struct mlx5_core_dev *mdev = priv->mdev;
u8 assoc_num = ctx->sa.assoc_num;
struct mlx5e_macsec_sa *tx_sa;
......@@ -301,8 +325,14 @@ static int mlx5e_macsec_add_txsa(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EEXIST;
goto out;
}
if (macsec->tx_sa[assoc_num]) {
if (macsec_device->tx_sa[assoc_num]) {
netdev_err(ctx->netdev, "MACsec offload tx_sa: %d already exist\n", assoc_num);
err = -EEXIST;
goto out;
......@@ -314,19 +344,17 @@ static int mlx5e_macsec_add_txsa(struct macsec_context *ctx)
goto out;
}
macsec->tx_sa[assoc_num] = tx_sa;
tx_sa->active = ctx_tx_sa->active;
tx_sa->next_pn = ctx_tx_sa->next_pn_halves.lower;
tx_sa->sci = secy->sci;
tx_sa->assoc_num = assoc_num;
err = mlx5_create_encryption_key(mdev, ctx->sa.key, secy->key_len,
MLX5_ACCEL_OBJ_MACSEC_KEY,
&tx_sa->enc_key_id);
if (err)
goto destroy_sa;
macsec_device->tx_sa[assoc_num] = tx_sa;
if (!secy->operational ||
assoc_num != tx_sc->encoding_sa ||
!tx_sa->active)
......@@ -341,10 +369,10 @@ static int mlx5e_macsec_add_txsa(struct macsec_context *ctx)
return 0;
destroy_encryption_key:
macsec_device->tx_sa[assoc_num] = NULL;
mlx5_destroy_encryption_key(mdev, tx_sa->enc_key_id);
destroy_sa:
kfree(tx_sa);
macsec->tx_sa[assoc_num] = NULL;
out:
mutex_unlock(&macsec->lock);
......@@ -356,6 +384,7 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
u8 assoc_num = ctx->sa.assoc_num;
struct mlx5e_macsec_sa *tx_sa;
struct mlx5e_macsec *macsec;
......@@ -368,12 +397,17 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
tx_sa = macsec->tx_sa[assoc_num];
netdev = ctx->netdev;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
tx_sa = macsec_device->tx_sa[assoc_num];
if (!tx_sa) {
netdev_err(netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num);
err = -EEXIST;
goto out;
}
......@@ -396,8 +430,10 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
if (err)
goto out;
} else {
if (!tx_sa->macsec_rule)
return -EINVAL;
if (!tx_sa->macsec_rule) {
err = -EINVAL;
goto out;
}
mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
}
......@@ -412,6 +448,7 @@ static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
static int mlx5e_macsec_del_txsa(struct macsec_context *ctx)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
u8 assoc_num = ctx->sa.assoc_num;
struct mlx5e_macsec_sa *tx_sa;
struct mlx5e_macsec *macsec;
......@@ -421,10 +458,15 @@ static int mlx5e_macsec_del_txsa(struct macsec_context *ctx)
return 0;
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
tx_sa = macsec->tx_sa[ctx->sa.assoc_num];
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
tx_sa = macsec_device->tx_sa[assoc_num];
if (!tx_sa) {
netdev_err(ctx->netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num);
err = -EEXIST;
......@@ -434,7 +476,7 @@ static int mlx5e_macsec_del_txsa(struct macsec_context *ctx)
mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id);
kfree_rcu(tx_sa);
macsec->tx_sa[assoc_num] = NULL;
macsec_device->tx_sa[assoc_num] = NULL;
out:
mutex_unlock(&macsec->lock);
......@@ -461,6 +503,7 @@ static int mlx5e_macsec_add_rxsc(struct macsec_context *ctx)
struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc;
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec_rx_sc *rx_sc;
struct list_head *rx_sc_list;
struct mlx5e_macsec *macsec;
......@@ -471,9 +514,18 @@ static int mlx5e_macsec_add_rxsc(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
rx_sc_list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
rx_sc_list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(rx_sc_list, ctx_rx_sc->sci);
if (rx_sc) {
netdev_err(ctx->netdev, "MACsec offload: rx_sc (sci %lld) already exists\n",
ctx_rx_sc->sci);
err = -EEXIST;
goto out;
}
......@@ -504,7 +556,7 @@ static int mlx5e_macsec_add_rxsc(struct macsec_context *ctx)
rx_sc->sci = ctx_rx_sc->sci;
rx_sc->active = ctx_rx_sc->active;
list_add_rcu(&rx_sc->rx_sc_list_element, &macsec->macsec_rx_sc_list_head);
list_add_rcu(&rx_sc->rx_sc_list_element, rx_sc_list);
rx_sc->sc_xarray_element = sc_xarray_element;
rx_sc->md_dst->u.macsec_info.sci = rx_sc->sci;
......@@ -529,6 +581,7 @@ static int mlx5e_macsec_upd_rxsc(struct macsec_context *ctx)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc;
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec_rx_sc *rx_sc;
struct mlx5e_macsec_sa *rx_sa;
struct mlx5e_macsec *macsec;
......@@ -542,7 +595,14 @@ static int mlx5e_macsec_upd_rxsc(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx_rx_sc->sci);
if (!rx_sc) {
err = -EINVAL;
......@@ -572,6 +632,7 @@ static int mlx5e_macsec_upd_rxsc(struct macsec_context *ctx)
static int mlx5e_macsec_del_rxsc(struct macsec_context *ctx)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec_rx_sc *rx_sc;
struct mlx5e_macsec_sa *rx_sa;
struct mlx5e_macsec *macsec;
......@@ -585,7 +646,14 @@ static int mlx5e_macsec_del_rxsc(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx->rx_sc->sci);
if (!rx_sc) {
netdev_err(ctx->netdev,
......@@ -630,6 +698,7 @@ static int mlx5e_macsec_add_rxsa(struct macsec_context *ctx)
{
const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
struct mlx5_core_dev *mdev = priv->mdev;
u8 assoc_num = ctx->sa.assoc_num;
struct mlx5e_macsec_rx_sc *rx_sc;
......@@ -645,7 +714,14 @@ static int mlx5e_macsec_add_rxsa(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
if (!rx_sc) {
netdev_err(ctx->netdev,
......@@ -707,6 +783,7 @@ static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx)
{
const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
u8 assoc_num = ctx->sa.assoc_num;
struct mlx5e_macsec_rx_sc *rx_sc;
sci_t sci = ctx_rx_sa->sc->sci;
......@@ -721,7 +798,14 @@ static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
if (!rx_sc) {
netdev_err(ctx->netdev,
......@@ -748,9 +832,7 @@ static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx)
goto out;
}
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
err = mlx5e_macsec_update_rx_sa(macsec, rx_sa, ctx_rx_sa->active);
out:
mutex_unlock(&macsec->lock);
......@@ -760,6 +842,7 @@ static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx)
static int mlx5e_macsec_del_rxsa(struct macsec_context *ctx)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
sci_t sci = ctx->sa.rx_sa->sc->sci;
struct mlx5e_macsec_rx_sc *rx_sc;
u8 assoc_num = ctx->sa.assoc_num;
......@@ -774,7 +857,14 @@ static int mlx5e_macsec_del_rxsa(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
list = &macsec->macsec_rx_sc_list_head;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
list = &macsec_device->macsec_rx_sc_list_head;
rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
if (!rx_sc) {
netdev_err(ctx->netdev,
......@@ -809,6 +899,7 @@ static int mlx5e_macsec_add_secy(struct macsec_context *ctx)
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct net_device *dev = ctx->secy->netdev;
const struct net_device *netdev = ctx->netdev;
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec *macsec;
int err = 0;
......@@ -819,28 +910,47 @@ static int mlx5e_macsec_add_secy(struct macsec_context *ctx)
return -EINVAL;
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
if (mlx5e_macsec_get_macsec_device_context(macsec, ctx)) {
netdev_err(netdev, "MACsec offload: MACsec net_device already exist\n");
goto out;
}
if (macsec->dev_addr) {
netdev_err(netdev, "Currently, only one MACsec offload device can be set\n");
err = -EINVAL;
if (macsec->num_of_devices >= MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES) {
netdev_err(netdev, "Currently, only %d MACsec offload devices can be set\n",
MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES);
err = -EBUSY;
goto out;
}
macsec_device = kzalloc(sizeof(*macsec_device), GFP_KERNEL);
if (!macsec_device) {
err = -ENOMEM;
goto out;
}
macsec->dev_addr = kzalloc(dev->addr_len, GFP_KERNEL);
if (!macsec->dev_addr) {
macsec_device->dev_addr = kzalloc(dev->addr_len, GFP_KERNEL);
if (!macsec_device->dev_addr) {
kfree(macsec_device);
err = -ENOMEM;
goto out;
}
memcpy(macsec->dev_addr, dev->dev_addr, dev->addr_len);
memcpy(macsec_device->dev_addr, dev->dev_addr, dev->addr_len);
macsec_device->netdev = dev;
INIT_LIST_HEAD_RCU(&macsec_device->macsec_rx_sc_list_head);
list_add_rcu(&macsec_device->macsec_device_list_element, &macsec->macsec_device_list_head);
++macsec->num_of_devices;
out:
mutex_unlock(&macsec->lock);
return err;
}
static int macsec_upd_secy_hw_address(struct macsec_context *ctx)
static int macsec_upd_secy_hw_address(struct macsec_context *ctx,
struct mlx5e_macsec_device *macsec_device)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct net_device *dev = ctx->secy->netdev;
......@@ -851,7 +961,7 @@ static int macsec_upd_secy_hw_address(struct macsec_context *ctx)
int i, err = 0;
list = &macsec->macsec_rx_sc_list_head;
list = &macsec_device->macsec_rx_sc_list_head;
list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) {
for (i = 0; i < MACSEC_NUM_AN; ++i) {
rx_sa = rx_sc->rx_sa[i];
......@@ -876,7 +986,7 @@ static int macsec_upd_secy_hw_address(struct macsec_context *ctx)
}
}
memcpy(macsec->dev_addr, dev->dev_addr, dev->addr_len);
memcpy(macsec_device->dev_addr, dev->dev_addr, dev->addr_len);
out:
return err;
}
......@@ -892,6 +1002,7 @@ static int mlx5e_macsec_upd_secy(struct macsec_context *ctx)
const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
const struct net_device *dev = ctx->secy->netdev;
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec_sa *tx_sa;
struct mlx5e_macsec *macsec;
int i, err = 0;
......@@ -905,16 +1016,22 @@ static int mlx5e_macsec_upd_secy(struct macsec_context *ctx)
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
/* if the dev_addr hasn't change, it mean the callback is from macsec_changelink */
if (!memcmp(macsec->dev_addr, dev->dev_addr, dev->addr_len)) {
err = macsec_upd_secy_hw_address(ctx);
if (!memcmp(macsec_device->dev_addr, dev->dev_addr, dev->addr_len)) {
err = macsec_upd_secy_hw_address(ctx, macsec_device);
if (err)
goto out;
}
for (i = 0; i < MACSEC_NUM_AN; ++i) {
tx_sa = macsec->tx_sa[i];
tx_sa = macsec_device->tx_sa[i];
if (!tx_sa)
continue;
......@@ -922,7 +1039,7 @@ static int mlx5e_macsec_upd_secy(struct macsec_context *ctx)
}
for (i = 0; i < MACSEC_NUM_AN; ++i) {
tx_sa = macsec->tx_sa[i];
tx_sa = macsec_device->tx_sa[i];
if (!tx_sa)
continue;
......@@ -942,32 +1059,40 @@ static int mlx5e_macsec_upd_secy(struct macsec_context *ctx)
static int mlx5e_macsec_del_secy(struct macsec_context *ctx)
{
struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
struct mlx5e_macsec_device *macsec_device;
struct mlx5e_macsec_rx_sc *rx_sc, *tmp;
struct mlx5e_macsec_sa *rx_sa;
struct mlx5e_macsec_sa *tx_sa;
struct mlx5e_macsec *macsec;
struct list_head *list;
int err = 0;
int i;
if (ctx->prepare)
return 0;
mutex_lock(&priv->macsec->lock);
macsec = priv->macsec;
macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
if (!macsec_device) {
netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
err = -EINVAL;
goto out;
}
for (i = 0; i < MACSEC_NUM_AN; ++i) {
tx_sa = macsec->tx_sa[i];
tx_sa = macsec_device->tx_sa[i];
if (!tx_sa)
continue;
mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id);
kfree(tx_sa);
macsec->tx_sa[i] = NULL;
macsec_device->tx_sa[i] = NULL;
}
list = &macsec->macsec_rx_sc_list_head;
list = &macsec_device->macsec_rx_sc_list_head;
list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) {
for (i = 0; i < MACSEC_NUM_AN; ++i) {
rx_sa = rx_sc->rx_sa[i];
......@@ -985,12 +1110,16 @@ static int mlx5e_macsec_del_secy(struct macsec_context *ctx)
kfree_rcu(rx_sc);
}
kfree(macsec->dev_addr);
macsec->dev_addr = NULL;
kfree(macsec_device->dev_addr);
macsec_device->dev_addr = NULL;
list_del_rcu(&macsec_device->macsec_device_list_element);
--macsec->num_of_devices;
out:
mutex_unlock(&macsec->lock);
return 0;
return err;
}
bool mlx5e_is_macsec_device(const struct mlx5_core_dev *mdev)
......@@ -1140,7 +1269,7 @@ int mlx5e_macsec_init(struct mlx5e_priv *priv)
if (!macsec)
return -ENOMEM;
INIT_LIST_HEAD(&macsec->macsec_rx_sc_list_head);
INIT_LIST_HEAD(&macsec->macsec_device_list_head);
mutex_init(&macsec->lock);
err = mlx5_core_alloc_pd(mdev, &macsec->aso_pdn);
......
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