xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: Add asynchronous callbacks for xfrm on layer 2.

Browse Source 
This patch implements asynchronous crypto callbacks
and a backlog handler that can be used when IPsec
is done at layer 2 in the TX path. It also extends
the skb validate functions so that we can update
the driver transmit return codes based on async
crypto operation or to indicate that we queued the
packet in a backlog queue.

Joint work with: Aviv Heller <avivh@mellanox.com>

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert
2017-12-20 10:41:36 +01:00
parent 3dca3f38cf
commit f53c723902
8 changed files with 175 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
net/core/dev.c
View File

@@ -3059,7 +3059,7 @@ int skb_csum_hwoffload_help(struct sk_buff *skb,
}
EXPORT_SYMBOL(skb_csum_hwoffload_help);
static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev)
static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device *dev, bool *again)
{
netdev_features_t features;
@@ -3099,7 +3099,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
}
}
skb = validate_xmit_xfrm(skb, features);
skb = validate_xmit_xfrm(skb, features, again);
return skb;
@@ -3110,7 +3110,7 @@ out_null:
return NULL;
}
struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev)
struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again)
{
struct sk_buff *next, *head = NULL, *tail;
@@ -3121,7 +3121,7 @@ struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *d
/* in case skb wont be segmented, point to itself */
skb->prev = skb;
skb = validate_xmit_skb(skb, dev);
skb = validate_xmit_skb(skb, dev, again);
if (!skb)
continue;
@@ -3448,6 +3448,7 @@ static int __dev_queue_xmit(struct sk_buff *skb, void *accel_priv)
struct netdev_queue *txq;
struct Qdisc *q;
int rc = -ENOMEM;
bool again = false;
skb_reset_mac_header(skb);
@@ -3509,7 +3510,7 @@ static int __dev_queue_xmit(struct sk_buff *skb, void *accel_priv)
XMIT_RECURSION_LIMIT))
goto recursion_alert;
skb = validate_xmit_skb(skb, dev);
skb = validate_xmit_skb(skb, dev, &again);
if (!skb)
goto out;
@@ -4193,6 +4194,8 @@ static __latent_entropy void net_tx_action(struct softirq_action *h)
spin_unlock(root_lock);
}
}
xfrm_dev_backlog(sd);
}
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_ATM_LANE)
@@ -8874,6 +8877,9 @@ static int __init net_dev_init(void)
skb_queue_head_init(&sd->input_pkt_queue);
skb_queue_head_init(&sd->process_queue);
#ifdef CONFIG_XFRM_OFFLOAD
skb_queue_head_init(&sd->xfrm_backlog);
#endif
INIT_LIST_HEAD(&sd->poll_list);
sd->output_queue_tailp = &sd->output_queue;
#ifdef CONFIG_RPS