10000 fix direct tcp by xiaoxuanzi · Pull Request #53 · fastos/fastsocket · GitHub
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8000 fix direct tcp #53

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fix direct tcp #53

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21 changes: 20 additions & 1 deletion kernel/net/core/dev.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3502,6 +3502,25 @@ int enable_receive_flow_deliver = 0;
EXPORT_SYMBOL(enable_receive_flow_deliver);

#if 0
struct dst_entry *sk_dst_check_direct_tcp(struct sock *sk, u32 cookie)
{
struct dst_entry *dst = sk->sk_rcv_dst ;

if(dst&&dst->obsolete&&dst->ops->check(dst, cookie)== NULL){

dst_release(dst);
sk->sk_rcv_dst = NULL;

if(dst->ops->check(dst, cookie) == NULL){
FPRINTK("Direct TCP socket 0x%p has dst->ops->check(dst, cookie)== NULL \n", sk);
}

return NULL;
}

return dst;
}

static void netif_direct_tcp(struct sk_buff *skb)
{
if (skb->protocol != htons(ETH_P_IP))
Expand All @@ -3524,7 +3543,7 @@ static void netif_direct_tcp(struct sk_buff *skb)
if (sk) {
if ((sk->sk_state != TCP_TIME_WAIT) && sock_flag(sk, SOCK_DIRECT_TCP)) {
FPRINTK("Skb 0x%p[:%u] hit DIRECT_TCP socket 0x%p[:%u]\n", skb, ntohs(th->dest), sk, inet_sk(sk)->num);
if(sk->sk_rcv_dst) {
if(sk->sk_rcv_dst && sk_dst_check_direct_tcp(sk, 0) != NULL) {
skb_dst_set(skb, sk->sk_rcv_dst);
skb->sock_dst = sk->sk_rcv_dst;
FPRINTK("Direct TCP socket 0x%p has dst record 0x%p[%u]\n", sk, sk->sk_rcv_dst, atomic_read(&sk->sk_rcv_dst->__refcnt));
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