tcp_transmit_skb
if (!tcp_transmit_skb(sk, nskb, 1, GFP_ATOMIC)) {
if (unlikely(tcp_transmit_skb(sk, skb, 1, gfp)))
err = tcp_transmit_skb(sk, nskb, 0, GFP_ATOMIC);
err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
if (tcp_transmit_skb(sk, skb, 0, priority))
return tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
err = tcp_transmit_skb(sk, syn_data, 1, sk->sk_allocation);
err = tcp_transmit_skb(sk, syn, 1, sk->sk_allocation);
tcp_transmit_skb(sk, buff, 1, sk->sk_allocation);
return tcp_transmit_skb(sk, skb, 0, (__force gfp_t)0);
err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);