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Merge branch 'crypto-chelsio-Fixes-issues-during-chcr-driver-registration' 

Ayush Sawal says:

====================
crypto: chelsio: Fixes issues during chcr driver registration

Patch 1: Avoid the accessing of wrong u_ctx pointer.
Patch 2: Fixes a deadlock between rtnl_lock and uld_mutex.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2020-03-30 10:33:23 -07:00
parent 3aeaaa59fd 876aa9f527
commit 07c9f74a89
2 changed files with 28 additions and 8 deletions
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34
drivers/crypto/chelsio/chcr_core.c
View File

@ -33,6 +33,10 @@ static int cpl_fw6_pld_handler(struct adapter *adap, unsigned char *input);
static void *chcr_uld_add(const struct cxgb4_lld_info *lld);
static int chcr_uld_state_change(void *handle, enum cxgb4_state state);
#ifdef CONFIG_CHELSIO_IPSEC_INLINE
static void update_netdev_features(void);
#endif /* CONFIG_CHELSIO_IPSEC_INLINE */
static chcr_handler_func work_handlers[NUM_CPL_CMDS] = {
[CPL_FW6_PLD] = cpl_fw6_pld_handler,
#ifdef CONFIG_CHELSIO_TLS_DEVICE
@ -129,8 +133,6 @@ static void chcr_dev_init(struct uld_ctx *u_ctx)
atomic_set(&dev->inflight, 0);
mutex_lock(&drv_data.drv_mutex);
list_add_tail(&u_ctx->entry, &drv_data.inact_dev);
if (!drv_data.last_dev)
drv_data.last_dev = u_ctx;
mutex_unlock(&drv_data.drv_mutex);
}
@ -204,10 +206,6 @@ static void *chcr_uld_add(const struct cxgb4_lld_info *lld)
}
u_ctx->lldi = *lld;
chcr_dev_init(u_ctx);
#ifdef CONFIG_CHELSIO_IPSEC_INLINE
if (lld->crypto & ULP_CRYPTO_IPSEC_INLINE)
chcr_add_xfrmops(lld);
#endif /* CONFIG_CHELSIO_IPSEC_INLINE */
#ifdef CONFIG_CHELSIO_TLS_DEVICE
if (lld->ulp_crypto & ULP_CRYPTO_KTLS_INLINE)
@ -299,6 +297,24 @@ static int chcr_uld_state_change(void *handle, enum cxgb4_state state)
return ret;
}
#ifdef CONFIG_CHELSIO_IPSEC_INLINE
static void update_netdev_features(void)
{
struct uld_ctx *u_ctx, *tmp;
mutex_lock(&drv_data.drv_mutex);
list_for_each_entry_safe(u_ctx, tmp, &drv_data.inact_dev, entry) {
if (u_ctx->lldi.crypto & ULP_CRYPTO_IPSEC_INLINE)
chcr_add_xfrmops(&u_ctx->lldi);
}
list_for_each_entry_safe(u_ctx, tmp, &drv_data.act_dev, entry) {
if (u_ctx->lldi.crypto & ULP_CRYPTO_IPSEC_INLINE)
chcr_add_xfrmops(&u_ctx->lldi);
}
mutex_unlock(&drv_data.drv_mutex);
}
#endif /* CONFIG_CHELSIO_IPSEC_INLINE */
static int __init chcr_crypto_init(void)
{
INIT_LIST_HEAD(&drv_data.act_dev);
@ -308,6 +324,12 @@ static int __init chcr_crypto_init(void)
drv_data.last_dev = NULL;
cxgb4_register_uld(CXGB4_ULD_CRYPTO, &chcr_uld_info);
#ifdef CONFIG_CHELSIO_IPSEC_INLINE
rtnl_lock();
update_netdev_features();
rtnl_unlock();
#endif /* CONFIG_CHELSIO_IPSEC_INLINE */
return 0;
}

2
drivers/crypto/chelsio/chcr_ipsec.c
View File

@ -99,9 +99,7 @@ void chcr_add_xfrmops(const struct cxgb4_lld_info *lld)
netdev->xfrmdev_ops = &chcr_xfrmdev_ops;
netdev->hw_enc_features |= NETIF_F_HW_ESP;
netdev->features |= NETIF_F_HW_ESP;
rtnl_lock();
netdev_change_features(netdev);
rtnl_unlock();
}
}