ipv4_l3mdev_skb 104 include/net/ip.h if (skb && ipv4_l3mdev_skb(IPCB(skb)->flags)) ipv4_l3mdev_skb 929 include/net/tcp.h skb && ipv4_l3mdev_skb(IPCB(skb)->flags)) ipv4_l3mdev_skb 939 include/net/tcp.h if (skb && ipv4_l3mdev_skb(TCP_SKB_CB(skb)->header.h4.flags)) ipv4_l3mdev_skb 1225 net/ipv4/ip_sockglue.c bool l3slave = ipv4_l3mdev_skb(IPCB(skb)->flags);